A power supply device

Abstract

The application provides a power supply device, which comprises a multi-stage converter, a shutdown signal generating unit, an input power plug-in, an output power plug-in and at least one signal plug-in, wherein: the multi-stage converter is cascaded in sequence, the input stage converter of the multi-stage converter is connected with the input power plug-in, and the output stage converter of the multi-stage converter is connected with the output power plug-in; the at least one signal plug-in is connected with the input end of the shutdown signal generating unit, the output end of the shutdown signal generating unit is connected with each stage converter; each signal plug-in is used for generating a shutdown trigger signal, the shutdown signal generating unit is used for generating a shutdown signal based on the shutdown trigger signal, and the shutdown signal is used for at least closing the input stage converter and the output stage converter before the input power plug-in and the output power plug-in are separated from the respective corresponding plug-in plug-in. The power supply device provided by the embodiment of the application avoids the generation of arc and improves the service life of the power supply device.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, and more specifically to a power supply device. Background Technology

[0002] Server power supplies are used to power servers, which typically run continuously. Therefore, server power supplies need to support hot-swapping without interrupting power.

[0003] Currently, during hot-swapping of server power supplies, the moment the connector plug separates from the socket, a large electric field is generated between them, ionizing the air and causing an electric arc to form. This arc not only poses a threat to nearby personnel but also damages the connector, reducing the lifespan of the server power supply. Therefore, preventing the generation of an electric arc upon connector separation from the socket is a pressing problem in this field. Summary of the Invention

[0004] To address the problems existing in the prior art, this application proposes a power supply device, including a multi-stage converter, a power-off signal generation unit, an input power module, an output power module, and at least one signal module, wherein:

[0005] Each stage of the converter is cascaded in sequence. The input stage converter of the multi-stage converter is connected to the input power module, and the output stage converter of the multi-stage converter is connected to the output power module.

[0006] The at least one signal plug-in is connected to the input terminal of the power-off signal generation unit, and the output terminal of the power-off signal generation unit is connected to each stage of the converter.

[0007] Each signal plug-in is used to generate a shutdown trigger signal, and the shutdown signal generation unit is used to generate a shutdown signal based on the shutdown trigger signal. The shutdown signal is used to shut down at least the input stage converter and the output stage converter before the input power plug-in and the output power plug-in are disconnected from their respective plug-in plugs.

[0008] Furthermore, the power-off signal generation unit includes multiple power-off signal generation circuits. The input terminal of each power-off signal generation circuit is connected to its corresponding signal plug-in. Each power-off signal generation circuit corresponds to a first-stage converter. The multiple power-off signal generation circuits correspond to the input-stage converter and the output-stage converter in each stage of the converter.

[0009] Furthermore, the power-off signal generation unit includes a power-off signal generation circuit and an isolation channel. The sum of the number of power-off signal generation circuits and the number of isolation channels is not less than 2 and not greater than the number of stages of the multi-stage converter. Each power-off signal generation circuit corresponds to a stage converter, and each isolation channel corresponds to a stage converter. Each stage converter corresponding to each power-off signal generation circuit and isolation channel includes the input stage converter and the output stage converter. The input terminal of each power-off signal generation circuit is connected to the corresponding signal plug-in. Each isolation channel is used to transmit the received power-off signal to its corresponding stage converter.

[0010] Furthermore, there are multiple isolation channels, and the input terminal of at least one isolation channel is connected to the output terminal of one of the power-off signal generating circuits, meaning that the power-off signal received by at least one isolation channel comes from other isolation channels.

[0011] Furthermore, the power-off signal generation unit includes a power-off signal generation circuit and at least two isolation channels. The input terminal of the power-off signal generation circuit is connected to the signal plug-in. Each isolation channel corresponds to a first-stage converter. The converters corresponding to the at least two isolation channels include the input-stage converter and the output-stage converter. Each isolation channel is used to transmit the power-off signal generated by the power-off signal generation circuit to the first-stage converter corresponding to each isolation channel.

[0012] Furthermore, at least one stage converter includes multiple sub-converters. Any stage converter including the input stage converter and the output stage converter that includes multiple sub-converters is an end-stage converter. The shutdown signal generation circuit corresponding to the end-stage converter is used to shut down each sub-converter of the end-stage converter.

[0013] Furthermore, the power-off signal generation circuit corresponding to the terminal converter includes multiple power-off signal generation sub-circuits, each sub-converter corresponds to one power-off signal generation sub-circuit, and the input terminal of each power-off signal generation sub-circuit is connected to a signal plug-in.

[0014] Furthermore, the power-off signal generation circuit corresponding to the terminal converter includes a power-off signal generation sub-circuit and a first sub-isolation channel. Each sub-converter in the terminal converter corresponds to a power-off signal generation sub-circuit or a first sub-isolation channel. The number of sub-converters included in the terminal converter is equal to the sum of the number of corresponding power-off signal generation sub-circuits and the number of first sub-isolation channels. The first sub-isolation channel is used to transmit the received power-off signal to its corresponding sub-converter.

[0015] Furthermore, the power-off signal generation circuit includes multiple first sub-isolation channels, at least one of the input terminals of the first sub-isolation channel is connected to the output terminal of the power-off signal generation sub-circuit, and at least one of the first sub-isolation channels receives a power-off signal from another first sub-isolation channel.

[0016] Furthermore, the power-off signal generation circuit corresponding to the terminal converter includes a power-off signal generation sub-circuit and multiple first sub-isolation channels. The input terminal of the power-off signal generation sub-circuit is connected to the signal plug-in. Each sub-converter in the terminal converter corresponds to a first sub-isolation channel. The first sub-isolation channel is used to transmit the power-off signal generated by the power-off signal generation sub-circuit to its corresponding sub-converter.

[0017] Furthermore, in the multi-stage converter, any stage converter other than the input stage converter and the output stage converter, and which includes multiple sub-converters, is an intermediate stage converter; the shutdown signal generation circuit corresponding to the intermediate stage converter is used to shut down at least one sub-converter included in the intermediate stage converter.

[0018] Furthermore, the power-off signal generation circuit corresponding to the intermediate stage converter includes at least one power-off signal generation sub-circuit, each power-off signal generation sub-circuit corresponds to a sub-converter, and the input terminal of each power-off signal generation sub-circuit is connected to a signal plug-in.

[0019] Furthermore, the power-off signal generation circuit corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit and a first sub-isolation channel. The sum of the number of power-off signal generation sub-circuits and the number of first sub-isolation channels is not less than 2 and not greater than the number of sub-converters included in the intermediate stage converter. Each power-off signal generation sub-circuit corresponds to one sub-converter, and each first sub-isolation channel corresponds to one sub-converter. The first sub-isolation channel is used to transmit the received power-off signal to its corresponding sub-converter.

[0020] Furthermore, the power-off signal generation circuit corresponding to the intermediate stage converter includes multiple first sub-isolation channels, at least one of the input terminals of the first sub-isolation channel is connected to the output terminal of the power-off signal generation sub-circuit, and at least one of the first sub-isolation channels receives a power-off signal from other first sub-isolation channels.

[0021] Furthermore, the power-off signal generation circuit corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit and at least one first sub-isolation channel. The input terminal of the power-off signal generation sub-circuit is connected to the signal plug-in. Each first sub-isolation channel corresponds to a sub-converter of the intermediate stage converter. The first sub-isolation channel is used to transmit the power-off signal generated by the power-off signal generation sub-circuit to its respective corresponding sub-converter.

[0022] Furthermore, the power-off signal generation circuit includes a first resistor and a second resistor. The first end of the first resistor is connected to a first power supply, the first end of the second resistor is grounded, the second end of the first resistor is connected to a corresponding signal plug-in, and the second ends of the first resistor and the second ends of the second resistor are connected to output the power-off signal.

[0023] Furthermore, the power-off signal generation circuit includes a third resistor, a fourth resistor, and a switching device. The first end of the third resistor is connected to the second power supply, and the second end of the third resistor is connected to the signal plug-in corresponding to the power-off signal generation circuit. The first end of the fourth resistor is connected to the third power supply, and the second end of the fourth resistor is connected to the first end of the switching device. The second end of the switching device is connected to the signal plug-in corresponding to the power-off signal generation circuit. The third end of the switching device is grounded, and the second end of the fourth resistor outputs the power-off signal.

[0024] Furthermore, if any one stage converter, which includes multiple sub-converters in the input stage converter and the output stage converter, is an end-stage converter, then the isolation channel corresponding to the end-stage converter includes multiple second sub-isolation channels, and each sub-converter included in the end-stage converter corresponds to one second sub-isolation channel;

[0025] If any stage converter in the multi-stage converter, excluding the input stage converter and the output stage converter, and including multiple sub-converters, is an intermediate stage converter, then the isolation channel corresponding to the intermediate stage converter includes at least one second sub-isolation channel. Each second sub-isolation channel included in the isolation channel corresponding to the intermediate stage converter corresponds to one of the sub-converters included in the intermediate stage converter. The second sub-isolation channel is used to transmit the received power-off signal to its respective corresponding sub-converter.

[0026] Furthermore, the isolation channel employs an isolation transformer, a capacitive isolation digital isolation chip, a magnetic isolation digital isolation chip, or an isolation optocoupler.

[0027] Furthermore, the length of the signal plug-in is less than that of the input power plug-in and less than that of the output power plug-in.

[0028] Furthermore, the input power plug-in, the output power plug-in, and the at least one signal plug-in are disposed in different connectors.

[0029] The power supply device provided in this application includes a multi-stage converter, a shutdown signal generation unit, an input power module, an output power module, and at least one signal module. The converters are cascaded sequentially. The input stage converter of the multi-stage converter is connected to the input power module, and the output stage converter of the multi-stage converter is connected to the output power module. The at least one signal module is connected to the input terminal of the shutdown signal generation unit, and the output terminal of the shutdown signal generation unit is connected to each stage converter. Each signal module generates a shutdown trigger signal, and the shutdown signal generation unit generates a shutdown signal based on the shutdown trigger signal. The shutdown signal is used to shut down each stage converter before the input power module and the output power module disengage from their respective plug-in modules. Because the converters are shut down before the input power module and the output power module disengage from their respective plug-in modules, arcing is avoided, and the service life of the power supply device is improved. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the connector structure for server power supplies in existing technology.

[0032] Figure 2 This is a schematic diagram of the power supply device provided in the first embodiment of this application.

[0033] Figure 3 This is a schematic diagram of the power supply device provided in the second embodiment of this application.

[0034] Figure 4 This is a schematic diagram of the power supply device provided in the third embodiment of this application.

[0035] Figure 5 This is a schematic diagram of the power supply device provided in the fourth embodiment of this application.

[0036] Figure 6 This is a schematic diagram of the power supply device provided in the fifth embodiment of this application.

[0037] Figure 7 This is a schematic diagram of the power supply device provided in the sixth embodiment of this application.

[0038] Figure 8 This is a schematic diagram of the power supply device provided in the seventh embodiment of this application.

[0039] Figure 9 This is a schematic diagram of the power supply device provided in the eighth embodiment of this application.

[0040] Figure 10 This is a schematic diagram of the power supply device provided in the ninth embodiment of this application.

[0041] Figure 11 This is a schematic diagram of the power supply device provided in the tenth embodiment of this application.

[0042] Figure 12 This is a schematic diagram of the power supply device provided in the eleventh embodiment of this application.

[0043] Figure 13 This is a schematic diagram of the power supply device provided in the twelfth embodiment of this application.

[0044] Figure 14 This is a schematic diagram of the power supply device provided in the thirteenth embodiment of this application.

[0045] Figure 15 This is a schematic diagram of the power supply device provided in the fourteenth embodiment of this application.

[0046] Figure 16 This is a schematic diagram of the power supply device provided in the fifteenth embodiment of this application.

[0047] Figure 17 This is a schematic diagram of the power supply device provided in the sixteenth embodiment of this application.

[0048] Figure 18 This is a schematic diagram of the power supply device provided in the seventeenth embodiment of this application.

[0049] Figure 19 This is a schematic diagram of the power supply device provided in the eighteenth embodiment of this application.

[0050] Figure 20 This is a schematic diagram of the power-off signal generation circuit provided in the nineteenth embodiment of this application.

[0051] Figure 21 This is a schematic diagram of the power-off signal generation circuit provided in the twentieth embodiment of this application.

[0052] Figure 22 This is a schematic diagram of the power-off signal generation circuit provided in the twenty-first embodiment of this application.

[0053] Figure 23This is a schematic diagram of the power-off signal generation circuit provided in the twenty-second embodiment of this application.

[0054] Figure 24 This is a schematic diagram of the power-off signal generation circuit provided in the twenty-third embodiment of this application.

[0055] Figure 25 This is a schematic diagram of the power supply device provided in the twenty-fourth embodiment of this application.

[0056] Figure 26 This is a schematic diagram of the power-off signal generation circuit provided in the twenty-fifth embodiment of this application.

[0057] Figure 27 This is a schematic diagram of the power-off signal generation circuit provided in the twenty-sixth embodiment of this application.

[0058] Figure 28 This is a schematic diagram of the power supply device provided in the twenty-seventh embodiment of this application.

[0059] Figure 29 This is a schematic diagram of the power supply device provided in the twenty-eighth embodiment of this application.

[0060] Figure 30 This is a schematic diagram of the power supply device provided in the twenty-ninth embodiment of this application.

[0061] Figure 31 This is a schematic diagram of the power-off signal generation circuit provided in the thirtieth embodiment of this application.

[0062] Figure 32 This is a schematic diagram of the power-off signal generation circuit provided in the thirty-first embodiment of this application.

[0063] Figure 33 This is a schematic diagram of the power supply device provided in the thirty-second embodiment of this application.

[0064] Figure 34 This is a schematic diagram of the isolation channel provided in the thirty-third embodiment of this application.

[0065] Figure 35 This is a schematic diagram of the isolation channel provided in the thirty-fourth embodiment of this application.

[0066] Figure 36 This is a schematic diagram of the power supply device provided in the thirty-fifth embodiment of this application.

[0067] Figure 37 This is a schematic diagram of the isolation channel provided in the thirty-sixth embodiment of this application.

[0068] Figure 38This is a schematic diagram of the power-off signal generation circuit provided in the thirty-seventh embodiment of this application.

[0069] Figure 39 This is a schematic diagram of the power-off signal generation circuit provided in the thirty-eighth embodiment of this application. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain this application, but are not intended to limit this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0071] To facilitate understanding of the technical solution provided in this application, the relevant content of the technical solution in this application will be explained below.

[0072] In practical applications, there exists a type of server power supply with "same input, same output" connectors. The structure of the connector for this server power supply is as follows: Figure 1 As shown, the connector includes an input power plug-in 101, an input power plug-in 102, an output power plug-in 103, and a signal plug-in 104. When the server power supply is operating, the connector connects to the corresponding mating sockets. The input power plug-in 101, input power plug-in 102, and output power plug-in 103 are respectively connected to their corresponding mating plugs in the mating sockets, and the signal plug-in 104 is connected to the mating signal plug in the mating sockets.

[0073] "Simultaneous insertion and removal" means that when the connector is inserted into the socket, the input power module, output power module, and signal module are simultaneously inserted into the socket; when the connector is removed from the socket, the input power module, output power module, and signal module are simultaneously removed from the socket. For this type of server power supply, when the connector is pulled out of the socket while energized, there is a risk of arcing at both the input and output ends of the connector, which can easily lead to connector damage.

[0074] Therefore, in order to solve the above-mentioned problems of existing "simultaneous input and output" server power supplies, this application proposes a new power supply device, which is described in detail below.

[0075] Figure 2 This is a schematic diagram of the power supply device provided in the first embodiment of this application, as shown below. Figure 2 As shown, the power supply device provided in this application embodiment includes a multi-stage converter 1, a power-off signal generation unit 2, an input power module 3, an output power module 4, and at least one signal module 5, wherein:

[0076] Each stage of converter 1 is cascaded in sequence. The input stage converter of the multi-stage converter 1 is connected to the input power plug-in 3, and the output stage converter of the multi-stage converter 1 is connected to the output power plug-in 4. The first stage converter in the multi-stage converter 1 that is connected to the input power plug-in 3 is the input stage converter. The first stage converter in the multi-stage converter that is connected to the output power plug-in 4 is the output stage converter.

[0077] The at least one signal plug-in 5 is connected to the input terminal of the power-off signal generation unit 2, and the output terminal of the power-off signal generation unit 2 is connected to each stage converter 1.

[0078] Each signal plug-in 5 is used to generate a shutdown trigger signal, and the shutdown signal generation unit 2 is used to generate a shutdown signal based on the shutdown trigger signal. The shutdown signal is used to shut down at least the input stage converter and the output stage converter before the input power plug-in 3 and the output power plug-in 4 are disconnected from their respective plug-in plugs.

[0079] Specifically, in use, the power supply device provided in this application embodiment connects the input power plug 3 to the power supply via a corresponding plug-in plug, and the output power plug 4 connects to the load via a corresponding plug-in plug. During hot-plugging, the input power plug 3 and the output power plug 4 are simultaneously inserted into their respective plug-in plugs; during hot-unplugging, the input power plug 3 and the output power plug 4 are simultaneously disengaged from their respective plug-in plugs.

[0080] Before the input power plug-in 3 and output power plug-in 4 disengage from their respective plug-in terminals, each signal plug-in 5 generates a shutdown trigger signal and transmits it to the shutdown signal generation unit 2. Upon receiving the shutdown trigger signal, the shutdown signal generation unit 2 generates a shutdown signal and then transmits the shutdown signal to at least the input stage converter and the output stage converter to shut down at least the input stage converter and the output stage converter. This ensures that at least the output stage converter and the input stage converter can stop operating before the input power plug-in 3 and output power plug-in 4 disengage from their respective plug-in terminals. Because the output stage converter and the input stage converter stop operating, the generation of electric arcs can be avoided.

[0081] For example, the length of signal plug-in 5 can be set to be shorter than the lengths of input power plug-in 3 and output power plug-in 4. During hot-swapping, signal plug-in 5 first disconnects from its corresponding plug-in signal plug-in, generating a power-off trigger signal and transmitting it to power-off signal generation unit 2. At this time, input power plug-in 3 and output power plug-in 4 are still connected to their respective plug-in plugs. Power-off signal generation unit 2 generates a power-off signal based on the power-off trigger signal, and then sends the power-off signal to at least the input stage converter and the output stage converter. After receiving the power-off signal, each stage converter will power off and stop working. At this time, input power plug-in 3 and output power plug-in 4 are still connected to their respective plug-in plugs. When input power plug-in 3 and output power plug-in 4 disconnect from their respective plug-in plugs, no arc will be generated because the input stage converter and the output stage converter have stopped working.

[0082] The power supply device provided in this application embodiment includes a multi-stage converter, a power-off signal generation unit, an input power module, an output power module, and at least one signal module. The converters are cascaded sequentially. The input stage converter of the multi-stage converter is connected to the input power module, and the output stage converter of the multi-stage converter is connected to the output power module. The at least one signal module is connected to the input terminal of the power-off signal generation unit, and the output terminal of the power-off signal generation unit is connected to each stage converter. Each signal module generates a power-off trigger signal, and the power-off signal generation unit generates a power-off signal based on the power-off trigger signal. The power-off signal is used to shut down at least the input stage converter and the output stage converter before the input power module and the output power module disengage from their respective plug-in modules. Because the input stage converter and the output stage converter are shut down before the input power module and the output power module disengage from their respective plug-in modules, arcing is avoided, and the service life of the power supply device is improved.

[0083] Figure 3 This is a schematic diagram of the power supply device provided in the second embodiment of this application, as shown below. Figure 3 As shown, based on the above embodiments, the power-off signal generation unit 2 further includes a plurality of power-off signal generation circuits 21. The input terminal of each power-off signal generation circuit 21 is connected to its corresponding signal plug-in 5. Each power-off signal generation circuit 21 corresponds to a first-stage converter 1. The converters 1 corresponding to the plurality of power-off signal generation circuits 21 include the input stage converter and the output stage converter.

[0084] Specifically, during hot-swapping, each signal plug-in 5 generates a shutdown trigger signal, which is then sent to its corresponding shutdown signal generation circuit 21. Upon receiving the shutdown trigger signal, each shutdown signal generation circuit 21 generates a shutdown signal and sends it to the corresponding first-stage converter 1. This ensures that each stage of the converter 1 corresponding to the multiple shutdown signal generation circuits 21 stops operating before the input power plug-in 3 and output power plug-in 4 disconnect from their respective plug-in plugs.

[0085] The input stage converter and the output stage converter each have a corresponding power-off signal generation circuit 21. When the number of stages in the multi-stage converter is greater than or equal to 3, a corresponding power-off signal generation circuit 21 is set for the intermediate stage converter according to actual needs.

[0086] Figure 4 This is a schematic diagram of the power supply device provided in the third embodiment of this application, as shown below. Figure 4 As shown, based on the above embodiments, the power-off signal generation unit 2 further includes a power-off signal generation circuit 21 and an isolation channel 22. The sum of the number of power-off signal generation circuits 21 and the number of isolation channels 22 is not less than 2 and not greater than the number of stages of the multi-stage converter. Each power-off signal generation circuit 21 corresponds to a first-stage converter 1, and each isolation channel 22 corresponds to a first-stage converter 1. Each stage of converter 1 corresponding to each power-off signal generation circuit 21 and isolation channel 22 includes the input stage converter and the output stage converter. The input terminal of each power-off signal generation circuit 21 is connected to the corresponding signal plug-in 5. Each isolation channel 22 is used to transmit the received power-off signal to its corresponding first-stage converter.

[0087] Specifically, the input terminal of each power-off signal generation circuit 21 is connected to the corresponding signal plug-in 5, and each power-off signal generation circuit 21 has a unique corresponding signal plug-in 5. The output terminal of the power-off signal generation circuit 21 can be connected to the input terminal of one or more isolation channels 22, and the output terminal of each isolation channel 22 is connected to the corresponding first-stage converter. When the number of isolation channels 22 is greater than or equal to 2, the output terminal of the power-off signal generation circuit 21 can be connected to the input terminal of each isolation channel 22; or at least one input terminal of an isolation channel 22 is connected to the output terminal of a power-off signal generation circuit 21, and at least one input terminal of an isolation channel 22 can be connected to the output terminal of other isolation channels 22. When the number of power-off signal generation circuits 21 is greater than or equal to 2, the input terminal of an isolation channel 22 can be connected to the output terminal of any power-off signal generation circuit 21. It is understood that, in order to reduce signal transmission time, the isolation channel 22 preferentially connects to the nearest power-off signal generation circuit 21. The number of stages in the multi-stage converter is 'a', the number of power-off signal generation circuits 21 is 'b', and the number of isolation channels 22 is 'c', where b+c is not less than 2 and not greater than 'a'. Each power-off signal generation circuit 21 corresponds to one stage of the converter, and each isolation channel 22 corresponds to one stage of the converter. The output stage converter corresponds to one power-off signal generation circuit 21 or one isolation channel 22, and the input stage converter corresponds to one power-off signal generation circuit 21 or one isolation channel 22. For converters with three or more stages, whether intermediate stage converters correspond to power-off signal generation circuits 21 or isolation channels 22 is set according to actual needs, and this embodiment of the invention does not impose limitations.

[0088] During hot-swapping, each signal plug-in 5 generates a power-off trigger signal and sends it to its connected power-off signal generation circuit 21. Upon receiving the power-off trigger signal, each power-off signal generation circuit 21 generates a power-off signal and sends it to the corresponding first-stage converter 1. For power-off signal generation circuits 21 connected to isolation channels 22, the power-off signal is also transmitted to the first-stage converter connected to the isolation channel 22 via the connected isolation channel 22. Each isolation channel 22 transmits the received power-off signal to the corresponding first-stage converter 1. The power-off signal received by the isolation channel 22 can originate from the connected power-off signal generation circuit 21 or from other connected isolation channels 22.

[0089] For example, such as Figure 5As shown, the power supply unit includes two stages of converters: an input stage converter and an output stage converter. The power-off signal generation unit 2 includes a power-off signal generation circuit 21 and an isolation channel 22. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation circuit 21 is connected to the corresponding first-stage converter (input stage converter). The output terminal of the power-off signal generation circuit 21 is also connected to the input terminal of the isolation channel 22, and the output terminal of the isolation channel 22 is connected to the corresponding first-stage converter (output stage converter). During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and sends it to the corresponding first-stage converter 1. It also transmits the power-off signal through the connected isolation channel 22 to another converter 1 connected to the isolation channel 22. Upon receiving the power-off signal, the drive circuits of each converter 1 stop operating, thus stopping the operation of each converter 1.

[0090] For example, such as Figure 6 As shown, the power-off signal generation unit 2 includes a power-off signal generation circuit 21 and multiple isolation channels 22. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5, and the input terminal of each isolation channel 22 is connected to the output terminal of the power-off signal generation circuit 21. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and sends it to the corresponding first-stage converter 1. The power-off signal is then transmitted to the first-stage converter 1 connected to each isolation channel 22 via the connected isolation channels 22. Since the input-stage converter is connected to the power-off signal generation circuit 21, the power-off signal generated by the power-off signal generation circuit 21 can turn off the input-stage converter. The output-stage converter is connected to an isolation channel 22, which can transmit the power-off signal to the output-stage converter to turn it off.

[0091] For example, such as Figure 7As shown, the power-off signal generation unit 2 includes multiple power-off signal generation circuits 21 and an isolation channel 22. The input terminal of each power-off signal generation circuit 21 is connected to the corresponding signal plug-in 5. The output terminal of one of the power-off signal generation circuits 21 is connected to the input terminal of the isolation channel 22. During hot-swapping, each signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, each power-off signal generation circuit 21 generates a power-off signal and sends it to the corresponding first-stage converter 1. The power-off signal generation circuit 21 connected to the isolation channel 22 also transmits the power-off signal to the first-stage converter connected to the isolation channel 22. Since the input-stage converter is connected to the power-off signal generation circuit 21, the power-off signal generated by the power-off signal generation circuit 21 can turn off the input-stage converter. The output-stage converter is connected to an isolation channel 22, and the isolation channel 22 can transmit the power-off signal to the output-stage converter to turn it off.

[0092] For example, such as Figure 8 As shown, the power supply unit includes a three-stage converter. The power-off signal generation unit 2 includes a power-off signal generation circuit 21 and an isolation channel 22. The input of the power-off signal generation circuit 21 is connected to the signal plug-in 5, and the output of the power-off signal generation circuit 21 is connected to the corresponding first-stage converter (input stage converter). The output of the power-off signal generation circuit 21 is also connected to the input of the isolation channel 22, and the output of the isolation channel 22 is connected to the corresponding first-stage converter (output stage converter). The intermediate stage converters are not connected to the power-off signal generation circuit or the isolation channel. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and sends it to the corresponding first-stage converter 1. It also transmits the power-off signal through the connected isolation channel 22 to another stage converter 1 connected to the isolation channel 22. Upon receiving the power-off signal, the drive circuits of each stage converter 1 stop operating, thereby stopping the input stage converter and the output stage converter.

[0093] Figure 9 This is a schematic diagram of the power supply device provided in the eighth embodiment of this application, as shown below. Figure 9 As shown, based on the above embodiments, there are multiple isolation channels 22, and the input terminal of at least one isolation channel 22 is connected to the output terminal of a power-off signal generation circuit 21. The power-off signal received by at least one isolation channel 22 comes from other isolation channels 22.

[0094] Specifically, isolation channel 22 is used to transmit a power-off signal. If the input of isolation channel 22 is connected to the output of power-off signal generation circuit 21, then the power-off signal transmitted by isolation channel 22 comes from the connected power-off signal generation circuit 21. If the input of isolation channel 22 is connected to the output of another isolation channel 22, then the power-off signal transmitted by isolation channel 22 comes from the connected other isolation channel 22. The input of the other isolation channel 22 can be directly connected to the output of power-off signal generation circuit 21, or it can be connected to the output of yet another isolation channel 22. Since the power-off signal is generated by power-off signal generation circuit 21, at least one of the multiple isolation channels 22 will have its input connected to the output of a power-off signal generation circuit 21 to obtain the power-off signal.

[0095] For example, such as Figure 10 As shown, the power-off signal generation unit 2 includes a power-off signal generation circuit 21 and three isolation channels. The three isolation channels are isolation channel 22-1, isolation channel 22-2, and isolation channel 22-3. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5, the output terminal of the power-off signal generation circuit 21 is connected to the input terminal of isolation channel 22-1, the output terminal of isolation channel 22-1 is connected to the input terminal of isolation channel 22-2, and the output terminal of isolation channel 22-2 is connected to the input terminal of isolation channel 22-3. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and sends it to the corresponding first-stage converter. The power-off signal generation circuit 21 also sends the power-off signal to isolation channel 22-1. Isolation channel 22-1 transmits a power-off signal to the first-stage converter connected to it. Isolation channel 22-1 also transmits the power-off signal to the connected isolation channel 22-2. Isolation channel 22-2 transmits the power-off signal to the first-stage converter connected to it, and also transmits it to the connected isolation channel 22-3. Isolation channel 22-3 transmits the power-off signal to the first-stage converter connected to it. Since the input-stage converter is connected to the power-off signal generation circuit 21, the power-off signal generated by circuit 21 can shut down the input-stage converter. The output-stage converter is connected to isolation channel 22-3, which can transmit the power-off signal to the output-stage converter, thus shutting down the output-stage converter.

[0096] For example, such as Figure 11As shown, the power-off signal generation unit 2 includes a power-off signal generation circuit 21 and three isolation channels. The three isolation channels are isolation channel 22-1, isolation channel 22-2, and isolation channel 22-3. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation circuit 21 is connected to the input terminal of isolation channel 22-1. The output terminal of isolation channel 22-1 is connected to the input terminals of isolation channels 22-2 and 22-3, respectively. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and sends it to the corresponding first-stage converter. The power-off signal generation circuit 21 also sends the power-off signal to isolation channel 22-1. Isolation channel 22-1 transmits a power-off signal to the first-stage converter connected to it. Isolation channel 22-1 also transmits the power-off signal to connected isolation channels 22-2 and 22-3. Isolation channel 22-2 transmits the power-off signal to the first-stage converter connected to it, and isolation channel 22-3 transmits the power-off signal to the first-stage converter connected to it. Since the input-stage converter is connected to the power-off signal generation circuit 21, the power-off signal generated by circuit 21 can shut down the input-stage converter. The output-stage converter is connected to isolation channel 22-3, which can transmit the power-off signal to the output-stage converter, thus shutting down the output-stage converter.

[0097] Figure 12 This is a schematic diagram of the power supply device provided in the eleventh embodiment of this application, as shown below. Figure 12 As shown, based on the above embodiments, the power-off signal generation unit 2 further includes a power-off signal generation circuit 21 and at least two isolation channels 22. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5. Each isolation channel 22 corresponds to a first-stage converter 1. The converters 1 corresponding to the at least two isolation channels 22 include the input stage converter and the output stage converter. The isolation channel 22 is used to transmit the power-off signal generated by the power-off signal generation circuit 21 to the converter corresponding to the isolation channel 22.

[0098] Specifically, the output of the power-off signal generation circuit can be connected to the input of each isolation channel 22 to send the generated power-off signal to each isolation channel 22.

[0099] The input terminal of the isolation channel 22 can be directly connected to the output terminal of the power-off signal generation circuit 21, or it can be indirectly connected to the output terminal of the power-off signal generation circuit 21 through other isolation channels 22 to obtain the power-off signal generated by the power-off signal generation circuit 21.

[0100] The input stage converter corresponds to one isolation channel 22, and the output stage converter corresponds to one isolation channel 22. For converters with three or more stages, whether the intermediate stage converters correspond to isolation channels 22 is set according to actual needs, and this embodiment of the invention does not impose any limitations.

[0101] For example, such as Figure 13 As shown, the power-off signal generation unit 2 includes a power-off signal generation circuit 21 and three isolation channels, each corresponding to a single-stage converter. The three isolation channels are isolation channel 22-1, isolation channel 22-2, and isolation channel 22-3. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5, the output terminal of the power-off signal generation circuit 21 is connected to the input terminal of isolation channel 22-1, the output terminal of isolation channel 22-1 is connected to the input terminal of isolation channel 22-2, and the output terminal of isolation channel 22-2 is connected to the input terminal of isolation channel 22-3. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and then sends the power-off signal to isolation channel 22-1. Isolation channel 22-1 transmits the power-off signal to the first-stage converter (input stage converter) connected to it. Isolation channel 22-1 also transmits the power-off signal to the connected isolation channel 22-2. Isolation channel 22-2 transmits the power-off signal to the first-stage converter connected to it. Isolation channel 22-2 also transmits the power-off signal to the connected isolation channel 22-3. Isolation channel 22-3 transmits the power-off signal to the first-stage converter (output stage converter) connected to it.

[0102] For example, such as Figure 14As shown, the power-off signal generation unit 2 includes a power-off signal generation circuit 21 and three isolation channels, each corresponding to a first-stage converter. The three isolation channels are isolation channel 22-1, isolation channel 22-2, and isolation channel 22-3. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation circuit 21 is connected to the input terminal of isolation channel 22-1. The output terminal of isolation channel 22-1 is connected to the input terminals of isolation channels 22-2 and 22-3, respectively. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and sends it to isolation channel 22-1. Isolation channel 22-1 transmits the power-off signal to the first-stage converter (input stage converter) connected to it, and also transmits the power-off signal to the connected isolation channels 22-2 and 22-3. Isolation channel 22-2 transmits the shutdown signal to the first-stage converter connected to isolation channel 22-2, and isolation channel 22-3 transmits the shutdown signal to the first-stage converter (output stage converter) connected to isolation channel 22-3.

[0103] For example, such as Figure 15 As shown, the power-off signal generation unit 2 includes a power-off signal generation circuit 21 and two isolation channels. Isolation channel 22-1 corresponds to the input stage converter, and isolation channel 22-2 corresponds to the output stage converter. The input terminal of the power-off signal generation circuit 21 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation circuit 21 is connected to the input terminal of isolation channel 22-1. The output terminal of isolation channel 22-1 is connected to the input terminal of isolation channel 22-2. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation circuit 21. After receiving the power-off trigger signal, the power-off signal generation circuit 21 generates a power-off signal and sends it to isolation channel 22-1. Isolation channel 22-1 transmits the power-off signal to the first-stage converter (input stage converter) connected to isolation channel 22-1, and also transmits the power-off signal to the connected isolation channel 22-2. Isolation channel 22-2 transmits the shutdown signal to the first-stage converter (output stage converter) connected to isolation channel 22-2.

[0104] Figure 16 This is a schematic diagram of the power supply device provided in the fifteenth embodiment of this application, as shown below. Figure 16 As shown, based on the above embodiments, any one stage converter including multiple sub-converters in the input stage converter and the output stage converter is an end-stage converter, and the shutdown signal generation circuit 21 corresponding to the end-stage converter is used to shut down each sub-converter 11 of the end-stage converter.

[0105] Specifically, the input-stage converter and the output-stage converter may include multiple sub-converters, wherein the input-stage converter comprising multiple sub-converters is an end-stage converter, and the output-stage converter comprising multiple sub-converters is an end-stage converter. The number of end-stage converters in the multiple stage converters may be one or two. The power-off signal generation circuit 21 corresponding to the end-stage converter is used to turn off each of the sub-converters 11 of the end-stage converter. The specific structure of the power-off signal generation circuit 21 corresponding to the end-stage converter is set according to actual needs, and is not limited in this embodiment of the invention.

[0106] For example, such as Figure 16 As shown, the power supply unit includes a two-stage converter 1. The output stage converter includes three sub-converters 11, each of which is connected to an output power module 4. The power-off signal generation unit 2 includes a power-off signal generation circuit 21-1 and a power-off signal generation circuit 21-2. The input terminal of the power-off signal generation circuit 21-2 is connected to a signal module 5, and the output terminal of the power-off signal generation circuit 21-2 is connected to the input stage converter. The power-off signal generation circuit 21-2 is used to turn off the input stage converter. The input terminal of the power-off signal generation circuit 21-1 is connected to a signal module 5, and the output terminal of the power-off signal generation circuit 21-1 is connected to the output stage converter. The power-off signal generation circuit 21-1 is used to turn off the three sub-converters 11 included in the output stage converter.

[0107] Figure 17 This is a schematic diagram of the power supply device provided in the sixteenth embodiment of this application, as shown below. Figure 17 As shown, based on the above embodiments, the power-off signal generation circuit 21 corresponding to the terminal converter further includes multiple power-off signal generation sub-circuits 211, each sub-converter 11 corresponds to one power-off signal generation sub-circuit 211, and the input terminal of each power-off signal generation sub-circuit 211 is connected to a signal plug-in 5.

[0108] Specifically, for the terminal converter comprising multiple sub-converters 11, each sub-converter 11 is connected to the output of a corresponding power-off signal generation sub-circuit 211 to receive a power-off signal. The input of each power-off signal generation sub-circuit 211 is connected to a corresponding signal plug-in 5.

[0109] During hot-swapping, the signal plug-in 5 connected to each power-off signal generation sub-circuit 211 generates a power-off trigger signal and sends it to the connected power-off signal generation sub-circuit 211. After receiving the power-off trigger signal, each power-off signal generation sub-circuit 211 generates a power-off signal and then sends the power-off signal to the corresponding sub-converter 11.

[0110] For example, such as Figure 17 As shown, the power supply unit includes a two-stage converter 1. The input stage converter includes three sub-converters 11, and the output stage converter has only one converter. The power-off signal generation unit 2 includes a power-off signal generation circuit 21-1 and a power-off signal generation circuit 21-2. The power-off signal generation circuit 21-1 includes three power-off signal generation sub-circuits 211. The input terminal of each power-off signal generation sub-circuit 211 is connected to the corresponding signal plug-in 5, and the input terminal of the power-off signal generation circuit 21-2 is also connected to the corresponding signal plug-in 5. The output terminal of each power-off signal generation sub-circuit 211 is connected to the input terminal of the corresponding sub-converter 11. Each sub-converter 11 is connected to an input power plug-in, and each sub-converter 11 is connected to the input terminal of the output stage converter.

[0111] During hot-swapping, each signal plug-in 5 generates a shutdown trigger signal. Each shutdown signal generation sub-circuit 211 receives the shutdown trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the corresponding sub-converter 11. The shutdown signal generation circuit 21-2 receives the shutdown signal trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the output stage converter. Each sub-converter 11 and the output stage converter can shut down before the output power plug-in 4 and each input power plug-in 3 disengage from their respective plug-in connectors to avoid arcing.

[0112] For example, such as Figure 18 As shown, the power supply unit includes a two-stage converter 1. The output stage converter includes three sub-converters 11, and the input stage converter has only one converter. The power-off signal generation unit 2 includes a power-off signal generation circuit 21-1 and a power-off signal generation circuit 21-2. The power-off signal generation circuit 21-1 includes three power-off signal generation sub-circuits 211. The input terminal of each power-off signal generation sub-circuit 211 is connected to the corresponding signal plug-in 5. The output terminal of each power-off signal generation sub-circuit 211 is connected to the input terminal of the corresponding sub-converter 11. Each sub-converter 11 is connected to an output power plug-in and the output terminal of the input stage converter.

[0113] During hot-swapping, each signal plug-in 5 generates a shutdown trigger signal. Each shutdown signal generation sub-circuit 211 receives the shutdown trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the corresponding sub-converter 11. The shutdown signal generation circuit 21-2 receives the shutdown signal trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the input stage converter. Each sub-converter 11 of the output stage converter and the input stage converter can be shut down before the input power plug-in 3 and each output power plug-in 4 are disconnected from their respective plug-in plugs.

[0114] Figure 19 This is a schematic diagram of the power supply device provided in the eighteenth embodiment of this application, as shown below. Figure 19 As shown, based on the above embodiments, the power-off signal generation circuit 21 corresponding to the terminal converter further includes a power-off signal generation sub-circuit 211 and a first sub-isolation channel 212. Each sub-converter 11 in the terminal converter corresponds to a power-off signal generation sub-circuit 211 or a first sub-isolation channel 212. The number of sub-converters 11 included in the terminal converter is equal to the sum of the number of corresponding power-off signal generation sub-circuits 211 and the number of first sub-isolation channels 212. The first sub-isolation channel 212 is used to transmit the received power-off signal to its corresponding sub-converter 11.

[0115] Specifically, each sub-converter 11 of the terminal converter obtains a shutdown signal through a corresponding shutdown signal generation sub-circuit 211 or a first sub-isolation channel 212. The input terminal of the shutdown signal generation sub-circuit 211 is connected to the corresponding signal plug-in 5 to obtain a shutdown trigger signal. The output terminal of the shutdown signal generation sub-circuit 211 can be connected to the input terminals of one or more first sub-isolation channels 212, and the output terminal of each first sub-isolation channel 212 is connected to the corresponding sub-converter. When the number of first sub-isolation channels 212 is greater than or equal to 2, the output terminal of the shutdown signal generation sub-circuit 211 can be connected to the input terminals of each first sub-isolation channel 212; or at least one input terminal of a first sub-isolation channel 212 can be connected to the output terminal of a shutdown signal generation sub-circuit 211, and at least one input terminal of a first sub-isolation channel 212 can be connected to the output terminals of other first sub-isolation channels 212. When the number of shutdown signal generation sub-circuits 211 is greater than or equal to 2, the input terminal of a first sub-isolation channel 212 can be connected to the output terminal of any one of the shutdown signal generation sub-circuits 211. The terminal converter includes a number of sub-converters of h, the power-off signal generation circuit 21 corresponding to the terminal converter includes a number of power-off signal generation sub-circuits 211 of e, and the number of first sub-isolation channels 212 of f. Then h = e + f, where e and f are positive integers.

[0116] During hot-swapping, the signal plug-in 5 connected to each power-off signal generation sub-circuit generates a power-off trigger signal and sends it to its respective connected power-off signal generation sub-circuit 211. Upon receiving the power-off trigger signal, each power-off signal generation sub-circuit 211 generates a power-off signal and sends it to the corresponding sub-converter 11. For power-off signal generation sub-circuits 211 connected to the first sub-isolation channel 212, the power-off signal is also transmitted to the sub-converter 11 connected to the first sub-isolation channel 212 via the connected first sub-isolation channel 212. Each first sub-isolation channel 212 transmits the received power-off signal to the corresponding sub-converter 11. The power-off signal received by the first sub-isolation channel 212 can originate from a connected power-off signal generation sub-circuit 211 or from other connected first sub-isolation channels 212.

[0117] For example, such as Figure 20 As shown, the power-off signal generation circuit 21 corresponding to the terminal converter includes a power-off signal generation sub-circuit 211 and multiple first sub-isolation channels 212. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation sub-circuit 211 is connected to the input terminal of the corresponding sub-converter 11. The input terminal of each first sub-isolation channel 212 is connected to the output terminal of the power-off signal generation sub-circuit 211, and the output terminal of each first sub-isolation channel 212 is connected to the input terminal of the corresponding sub-converter 11 to transmit a power-off signal to the corresponding sub-converter 11. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and then sends it to the connected power-off signal generation sub-circuit 211. After receiving the power-off trigger signal, the power-off signal generation sub-circuit 211 generates a power-off signal and then sends the power-off signal to the corresponding sub-converter 11, and transmits the power-off signal to the sub-converter 11 connected to each first sub-isolation channel 212 through each connected first sub-isolation channel 212.

[0118] For example, such as Figure 21As shown, the power-off signal generation circuit 21 corresponding to the terminal converter includes multiple power-off signal generation sub-circuits 211 and a first sub-isolation channel 212. The input terminal of each power-off signal generation sub-circuit 211 is connected to the corresponding signal plug-in 5, and the output terminal of each power-off signal generation sub-circuit 211 is connected to the input terminal of the corresponding sub-converter 11. The input terminal of the first sub-isolation channel 212 can be connected to the output terminal of any power-off signal generation sub-circuit 211, and the output terminal of the first sub-isolation channel 212 is connected to the input terminal of the corresponding sub-converter 11 to transmit a power-off signal to the corresponding sub-converter 11. During hot-swapping, each signal plug-in 5 generates a power-off trigger signal and then sends it to the connected power-off signal generation sub-circuit 211. After receiving the power-off trigger signal, the power-off signal generation sub-circuit 211 generates a power-off signal and then sends the power-off signal to the corresponding sub-converter 11. The power-off signal generation sub-circuit 211 connected to the first sub-isolation channel 212 will also transmit the power-off signal to the sub-converter 11 connected to the first sub-isolation channel 212 through the connected first sub-isolation channel 212.

[0119] Figure 22 This is a schematic diagram of the power-off signal generation circuit provided in the twenty-first embodiment of this application, as shown below. Figure 22 As shown, based on the above embodiments, the power-off signal generation circuit 21 further includes a plurality of first sub-isolation channels 212, at least one of the first sub-isolation channels 212 has an input terminal connected to the output terminal of a power-off signal generation sub-circuit 211, and at least one first sub-isolation channel 212 receives a power-off signal from another first sub-isolation channel 212.

[0120] Specifically, the first sub-isolation channel 212 is used to transmit a power-off signal. If the input terminal of the first sub-isolation channel 212 is connected to the output terminal of the power-off signal generating sub-circuit 211, then the power-off signal transmitted by the first sub-isolation channel 212 comes from the connected power-off signal generating sub-circuit 211. If the input terminal of the first sub-isolation channel 212 is connected to the output terminal of another first sub-isolation channel 212, then the power-off signal transmitted by the first sub-isolation channel 212 comes from the connected other first sub-isolation channel 212. The input terminal of the other first sub-isolation channel 212 can be directly connected to the output terminal of the power-off signal generating sub-circuit 211, or it can be connected to the output terminal of yet another first sub-isolation channel 212. At least one of the multiple first sub-isolation channels 212 included in the power-off signal generating circuit 21 will have its input terminal connected to the output terminal of one power-off signal generating sub-circuit 211. When the power-off signal generation circuit 21 includes multiple power-off signal generation sub-circuits 211, the first sub-isolation channel 212 can be connected to any one of the power-off signal generation sub-circuits 211.

[0121] For example, such as Figure 23 As shown, the power-off signal generation circuit 21 includes a power-off signal generation sub-circuit 211 and three first sub-isolation channels. The three first sub-isolation channels are first sub-isolation channel 212-1, first sub-isolation channel 212-2, and first sub-isolation channel 212-3. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5, the output terminal of the power-off signal generation sub-circuit 211 is connected to the input terminal of the first sub-isolation channel 212-1, the output terminal of the first sub-isolation channel 212-1 is connected to the input terminal of the first sub-isolation channel 212-2, and the output terminal of the first sub-isolation channel 212-2 is connected to the input terminal of the first sub-isolation channel 212-3. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal, which is then sent to the connected power-off signal generation sub-circuit 211. After receiving the shutdown trigger signal, the shutdown signal generation sub-circuit 211 generates a shutdown signal and sends it to the corresponding sub-converter 11. The shutdown signal generation sub-circuit 211 also sends the shutdown signal to the first sub-isolation channel 212-1. The first sub-isolation channel 212-1 transmits the shutdown signal to the sub-converter 11 connected to it. The first sub-isolation channel 212-1 also transmits the shutdown signal to the connected first sub-isolation channel 212-2. The first sub-isolation channel 212-2 transmits the shutdown signal to the sub-converter 11 connected to it. The first sub-isolation channel 212-2 also transmits the shutdown signal to the connected first sub-isolation channel 212-3. The first sub-isolation channel 212-3 transmits the shutdown signal to the sub-converter 11 connected to it.

[0122] For example, such as Figure 24As shown, the power-off signal generation circuit 21 includes a power-off signal generation sub-circuit 211 and three first sub-isolation channels. The three first sub-isolation channels are first sub-isolation channel 212-1, first sub-isolation channel 212-2, and first sub-isolation channel 212-3. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation sub-circuit 211 is connected to the input terminal of the first sub-isolation channel 212-1. The output terminal of the first sub-isolation channel 212-1 is connected to the input terminals of the first sub-isolation channels 212-2 and 212-3, respectively. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation sub-circuit 211. After receiving the power-off trigger signal, the power-off signal generation sub-circuit 211 generates a power-off signal and sends it to the corresponding sub-converter 11. The power-off signal generation sub-circuit 211 also sends the power-off signal to the first sub-isolation channel 212-1. The first sub-isolation channel 212-1 transmits the power-off signal to the sub-converter 11 connected to it. The first sub-isolation channel 212-1 also transmits the power-off signal to the connected first sub-isolation channels 212-2 and 212-3. The first sub-isolation channel 212-2 transmits the power-off signal to the sub-converter 11 connected to it, and the first sub-isolation channel 212-3 transmits the power-off signal to the sub-converter connected to it.

[0123] Figure 25 This is a schematic diagram of the power supply device provided in the twenty-fourth embodiment of this application, as shown below. Figure 25 As shown, based on the above embodiments, the power-off signal generation circuit 21 corresponding to the terminal converter further includes a power-off signal generation sub-circuit 211 and multiple first sub-isolation channels 212. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5. Each sub-converter 11 in the terminal converter corresponds to a first sub-isolation channel 212. The first sub-isolation channel 212 is used to transmit the power-off signal generated by the power-off signal generation circuit 21 to its corresponding sub-converter 11.

[0124] Specifically, the power-off signal generation circuit 21 corresponding to the terminal converter includes a power-off signal generation sub-circuit 211, which generates a power-off signal after receiving the power-off trigger signal generated by the corresponding signal plug-in 5. Each first sub-isolation channel 212 included in the power-off signal generation circuit 21 is used to transmit the power-off signal generated by the power-off signal generation sub-circuit 211 to the corresponding sub-converter 11.

[0125] Each first sub-isolation channel 212 can be directly connected to the output of the power-off signal generation sub-circuit 211 to obtain a power-off signal. When there are multiple first sub-isolation channels 212, the input of a first sub-isolation channel 212 can be directly connected to the output of the power-off signal generation sub-circuit 211, or it can be indirectly connected to the output of the power-off signal generation sub-circuit 211 through other first sub-isolation channels 212 to obtain the power-off signal generated by the power-off signal generation sub-circuit 211.

[0126] For example, such as Figure 26 As shown, the power-off signal generation circuit 21 corresponding to the terminal converter includes a power-off signal generation sub-circuit 211 and three first sub-isolation channels, each corresponding to a sub-converter 11. The three first sub-isolation channels are first sub-isolation channel 212-1, first sub-isolation channel 212-2, and first sub-isolation channel 212-3. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5, the output terminal of the power-off signal generation sub-circuit 211 is connected to the input terminal of the first sub-isolation channel 212-1, the output terminal of the first sub-isolation channel 212-1 is connected to the input terminal of the first sub-isolation channel 212-2, and the output terminal of the first sub-isolation channel 212-2 is connected to the input terminal of the first sub-isolation channel 212-3. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal, which is then sent to the connected power-off signal generation sub-circuit 211. After receiving the shutdown trigger signal, the shutdown signal generation sub-circuit 211 generates a shutdown signal and then sends it to the first sub-isolation channel 212-1. The first sub-isolation channel 212-1 transmits the shutdown signal to the sub-converter 11 connected to it. The first sub-isolation channel 212-1 also transmits the shutdown signal to the connected first sub-isolation channel 212-2. The first sub-isolation channel 212-2 transmits the shutdown signal to the sub-converter 11 connected to it. The first sub-isolation channel 212-2 also transmits the shutdown signal to the connected first sub-isolation channel 212-3. The first sub-isolation channel 212-3 transmits the shutdown signal to the sub-converter 11 connected to it.

[0127] For example, such as Figure 27As shown, the power-off signal generation circuit 21 corresponding to the terminal converter includes a power-off signal generation sub-circuit 211 and three first sub-isolation channels, each corresponding to a sub-converter 11. The three first sub-isolation channels are first sub-isolation channel 212-1, first sub-isolation channel 212-2, and first sub-isolation channel 212-3. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation sub-circuit 211 is connected to the input terminal of the first sub-isolation channel 212-1. The output terminal of the first sub-isolation channel 212-1 is connected to the input terminals of the first sub-isolation channels 212-2 and 212-3, respectively. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and sends it to the connected power-off signal generation sub-circuit 211. After receiving the power-off trigger signal, the power-off signal generation sub-circuit 211 generates a power-off signal and then sends the power-off signal to the first sub-isolation channel 212-1. The first sub-isolation channel 212-1 transmits the power-off signal to the sub-converter 11 connected to it. The first sub-isolation channel 212-1 also transmits the power-off signal to the connected first sub-isolation channels 212-2 and 212-3. The first sub-isolation channel 212-2 transmits the power-off signal to the sub-converter connected to it, and the first sub-isolation channel 212-3 transmits the power-off signal to the sub-converter connected to it.

[0128] Figure 28 This is a schematic diagram of the power supply device provided in the twenty-seventh embodiment of this application, as shown below. Figure 28 As shown, based on the above embodiments, further, in the multi-stage converter, in addition to the input stage converter and the output stage converter, any stage converter including multiple sub-converters 11 is an intermediate stage converter; the shutdown signal generation circuit 21 corresponding to the intermediate stage converter is used to shut down at least one sub-converter 11 included in the intermediate stage converter.

[0129] Specifically, in the multi-stage converter, any stage converter other than the input stage converter and the output stage converter is called an intermediate stage converter. The intermediate stage converter may include multiple sub-converters 11. A corresponding shutdown signal generation circuit 21 can be provided for the intermediate stage converter to shut down at least one sub-converter 11, i.e., one, two, three, or all sub-converters can be shut down. The number of sub-converters shut down in the intermediate stage converter is set according to actual needs, and this embodiment of the invention does not impose a limitation.

[0130] For example, such as Figure 28As shown, the power supply unit includes a three-stage converter: an input stage converter, an intermediate stage converter, and an output stage converter. The intermediate stage converter includes three sub-converters 11. The power-off signal generation unit 2 includes power-off signal generation circuits 21-1, 21-2, and 21-3. The input terminals of power-off signal generation circuits 21-1, 21-2, and 21-3 are connected to the corresponding signal plug-in 5. Power-off signal generation circuit 21-1 is used to turn off the input stage converter, power-off signal generation circuit 21-3 is used to turn off the output stage converter, and power-off signal generation circuit 21-2 is used to turn off the three sub-converters 11 included in the intermediate stage converter.

[0131] During hot-swapping, each signal plug-in 5 generates a shutdown trigger signal. The shutdown signal generation circuit 21-1 receives the shutdown trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the corresponding input stage converter. The shutdown signal generation circuit 21-3 receives the shutdown trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the corresponding output stage converter. The shutdown signal generation circuit 21-2 receives the shutdown trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the corresponding sub-converter 11. Each sub-converter 11 of the output stage converter, the intermediate stage converter, and the intermediate stage converter can be shut down before the input power plug-in 3 and the output power plug-in 4 disengage from their respective plug-in connectors.

[0132] Figure 29 This is a schematic diagram of the power supply device provided in the twenty-eighth embodiment of this application, as shown below. Figure 29 As shown, based on the above embodiments, the power-off signal generation circuit 21 corresponding to the intermediate stage converter further includes at least one power-off signal generation sub-circuit 211. Each power-off signal generation sub-circuit 211 of the power-off signal generation circuit 21 corresponding to the intermediate stage converter corresponds to a sub-converter 11 of the intermediate stage converter. The input terminal of each power-off signal generation sub-circuit 211 of the power-off signal generation circuit 21 corresponding to the intermediate stage converter is connected to a signal plug-in 5.

[0133] Specifically, for the intermediate stage converter comprising multiple sub-converters 11, at least one sub-converter 11 is connected to the output of a corresponding power-off signal generation sub-circuit 211 to receive a power-off signal. The input of each power-off signal generation sub-circuit 211 is connected to a corresponding signal plug-in 5.

[0134] During hot-swapping, the signal plug-in 5 connected to each power-off signal generation sub-circuit 211 generates a power-off trigger signal and then sends the power-off trigger signal to the connected power-off signal generation sub-circuit 211. After receiving the power-off trigger signal, each power-off signal generation sub-circuit 211 generates a power-off signal and then sends the power-off signal to the corresponding sub-converter 11.

[0135] For example, such as Figure 29 As shown, the power supply unit includes a three-stage converter: an input stage converter, an intermediate stage converter, and an output stage converter. The intermediate stage converter includes three sub-converters 11. The power-off signal generation unit 2 includes a power-off signal generation circuit 21-1, a power-off signal generation circuit 21-2, and a power-off signal generation circuit 21-3. The power-off signal generation circuit 21-2 includes two power-off signal generation sub-circuits 211. The input terminal of the power-off signal generation circuit 21-1 is connected to the corresponding signal plug-in 5. The input terminals of the two power-off signal generation sub-circuits 211 of the power-off signal generation circuit 21-2 are respectively connected to the corresponding signal plug-in 5. The input terminal of the power-off signal generation circuit 21-3 is connected to the corresponding signal plug-in 5. The power-off signal generation circuit 21-1 is used to turn off the input stage converter, the power-off signal generation circuit 21-3 is used to turn off the output stage converter, and the two power-off signal generation sub-circuits 211 are used to turn off their respective sub-converters 11 in the intermediate stage converter.

[0136] During hot-swapping, each signal plug-in 5 generates a shutdown trigger signal. The shutdown signal generation circuit 21-1 receives the shutdown trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the corresponding input stage converter. The shutdown signal generation circuit 21-3 receives the shutdown trigger signal from the connected signal plug-in 5, generates a shutdown signal, and then sends the shutdown signal to the corresponding output stage converter. Two shutdown signal generation sub-circuits 211 receive the shutdown trigger signals from the connected signal plug-in 5, generate shutdown signals, and then send the shutdown signals to their respective sub-converters 11. The two sub-converters 11 corresponding to the shutdown signal generation sub-circuits 211 in the output stage converter and intermediate stage converter can be shut down before the input power plug-in 3 and output power plug-in 4 disengage from their respective plug-in plugs.

[0137] Figure 30 This is a schematic diagram of the power supply device provided in the twenty-ninth embodiment of this application, as shown below. Figure 30As shown, based on the above embodiments, the power-off signal generation circuit 21 corresponding to the intermediate stage converter further includes a power-off signal generation sub-circuit 211 and a first sub-isolation channel 212. The sum of the number of power-off signal generation sub-circuits 211 and the number of first sub-isolation channels 212 in the power-off signal generation circuit 21 corresponding to the intermediate stage converter is not less than 2 and not greater than the number of sub-converters 11 included in the intermediate stage converter. Each power-off signal generation sub-circuit 211 in the power-off signal generation circuit 21 corresponding to one sub-converter 11 of the intermediate stage converter, and each first sub-isolation channel 212 in the power-off signal generation circuit 21 corresponding to one sub-converter 11 of the intermediate stage converter, is used to transmit the received power-off signal to its corresponding sub-converter 11.

[0138] Specifically, each sub-converter 11 of the intermediate stage converter obtains a shutdown signal through a corresponding shutdown signal generation sub-circuit 211 or a first sub-isolation channel 212. The input terminal of the shutdown signal generation sub-circuit 211 is connected to the corresponding signal plug-in 5 to obtain a shutdown trigger signal. The output terminal of the shutdown signal generation sub-circuit 211 can be connected to the input terminals of one or more first sub-isolation channels 212, and the output terminal of each first sub-isolation channel 212 is connected to the corresponding sub-converter 11. When the number of first sub-isolation channels 212 is greater than or equal to 2, the output terminal of the shutdown signal generation sub-circuit 211 can be connected to the input terminals of each first sub-isolation channel 212; or at least one input terminal of a first sub-isolation channel 212 is connected to the output terminal of a shutdown signal generation sub-circuit 211, and at least one input terminal of a first sub-isolation channel 212 can be connected to the output terminals of other first sub-isolation channels 212. When the number of power-off signal generating sub-circuits 211 is greater than or equal to 2, the input terminal of the first sub-isolation channel 212 can be connected to the output terminal of any power-off signal generating sub-circuit 211. The intermediate stage converter includes a number of sub-converters 11, the corresponding power-off signal generating circuit 21 of the intermediate stage converter includes a number of power-off signal generating sub-circuits 211, and the first sub-isolation channel 212 includes a number of y. Then, x + y is not less than 2 and not greater than z, where x and y are positive integers.

[0139] The number of power-off signal generation sub-circuits and the number of first sub-isolation channels included in the power-off signal generation circuit corresponding to the intermediate stage converter are set according to actual needs, and this embodiment of the invention does not impose any limitation. Which of the sub-converters included in the intermediate stage converter are connected to the power-off signal generation sub-circuit or the first sub-isolation channel are set according to actual needs, and this embodiment of the invention does not impose any limitation.

[0140] During hot-swapping, the signal plug-in 5 connected to each power-off signal generation sub-circuit generates a power-off trigger signal and then sends the power-off trigger signal to the corresponding power-off signal generation sub-circuit 211. Each power-off signal generation sub-circuit 211, upon receiving the power-off trigger signal, generates a power-off signal and sends it to the corresponding sub-converter 11. For power-off signal generation sub-circuits 211 connected to the first sub-isolation channel 212, the power-off signal is also transmitted to the sub-converter 11 connected to the first sub-isolation channel 212 via the connected first sub-isolation channel 212. Each first sub-isolation channel 212 transmits the received power-off signal to the corresponding sub-converter 11. The power-off signal received by the first sub-isolation channel 212 can come from the connected power-off signal generation sub-circuit 211 or from other connected first sub-isolation channels 212.

[0141] For example, such as Figure 30 As shown, the power supply unit includes a three-stage converter: an input stage converter, an intermediate stage converter, and an output stage converter. The intermediate stage converter includes three sub-converters 11. The power-off signal generation unit 2 includes power-off signal generation circuits 21-1, 21-2, and 21-3. Power-off signal generation circuit 21-2 includes a power-off signal generation sub-circuit 211 and a first sub-isolation channel 212. The input terminals of power-off signal generation circuits 21-1, 21-3, and 21-4 are connected to the corresponding signal plug-in 5. Power-off signal generation circuit 21-1 is used to turn off the input stage converter, power-off signal generation circuit 21-3 is used to turn off the output stage converter, and power-off signal generation circuit 21-2 is used to turn off the two sub-converters 11 in the intermediate stage converter.

[0142] During hot-swapping, each signal plug-in 5 generates a power-off trigger signal. The power-off signal generation circuit 21-1 receives the power-off trigger signal from the connected signal plug-in 5, generates a power-off signal, and then sends the power-off signal to the corresponding input stage converter to shut down the input stage converter. The power-off signal generation circuit 21-3 receives the power-off trigger signal from the connected signal plug-in 5, generates a power-off signal, and then sends the power-off signal to the corresponding output stage converter to shut down the output stage converter. The power-off signal generation sub-circuit 211 receives the power-off trigger signal from the connected signal plug-in 5, generates a power-off signal, and then sends the power-off signal to the corresponding sub-converter 11 to shut down the sub-converter 11. The power-off signal generation sub-circuit 211 also sends the power-off signal to the first sub-isolation channel 212, which then transmits the power-off signal to the connected sub-converter 11 to shut down the sub-converter 11.

[0143] Figure 31 This is a schematic diagram of the power-off signal generation circuit provided in the thirtieth embodiment of this application, as shown below. Figure 31 As shown, based on the above embodiments, the power-off signal generation circuit 21 corresponding to the intermediate stage converter further includes a plurality of first sub-isolation channels 212, at least one of the input terminals of the first sub-isolation channel 212 is connected to the output terminal of a power-off signal generation sub-circuit 211, and at least one of the first sub-isolation channels 212 receives a power-off signal from other first sub-isolation channels 212.

[0144] Specifically, the first sub-isolation channel 212 is used to transmit a power-off signal. If the input of the first sub-isolation channel 212 is connected to the output of the power-off signal generating sub-circuit 211, then the power-off signal transmitted by the first sub-isolation channel 212 comes from the connected power-off signal generating sub-circuit 211. If the input of the first sub-isolation channel 212 is connected to the output of another first sub-isolation channel 212, then the power-off signal transmitted by the first sub-isolation channel 212 comes from the connected other first sub-isolation channel 212. The input of the other first sub-isolation channel 212 can be directly connected to the output of the power-off signal generating sub-circuit 211, or it can be connected to the output of yet another first sub-isolation channel 212. At least one of the multiple first sub-isolation channels 212 included in the power-off signal generating circuit 21 corresponding to the intermediate stage converter will have its input connected to the output of a power-off signal generating sub-circuit 211. When the power-off signal generation circuit 21 corresponding to the intermediate stage converter includes multiple power-off signal generation sub-circuits 211, the first sub-isolation channel 212 can be connected to any one of the power-off signal generation sub-circuits 211.

[0145] For example, such as Figure 31As shown, the power-off signal generation circuit 21 corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit 211 and two first sub-isolation channels 212. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation sub-circuit 211 is connected to the input terminal of one of the first sub-isolation channels 212. The output terminal of the first sub-isolation channel 212 connected to the power-off signal generation sub-circuit 211 is connected to the input terminal of the other first sub-isolation channel 212. During hot-swapping, the signal plug-in 5 generates a power-off trigger signal and then sends it to the connected power-off signal generation sub-circuit 211. After receiving the power-off trigger signal, the power-off signal generation sub-circuit 211 generates a power-off signal and then sends the power-off signal to the corresponding sub-converter 11. The power-off signal generation sub-circuit 211 also sends the power-off signal to the connected first sub-isolation channel 212. The first sub-isolation channel 212, connected to the power-off signal generation sub-circuit 211, transmits the power-off signal to the corresponding sub-converter 11, and also transmits the power-off signal to another first sub-isolation channel 212. The other first sub-isolation channel 212-2 transmits the power-off signal to the corresponding sub-converter 11.

[0146] Figure 32 This is a schematic diagram of the power-off signal generation circuit provided in the thirty-first embodiment of this application, as shown below. Figure 32 As shown, the power-off signal generation circuit 21 corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit 211 and at least one first sub-isolation channel 212. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5. Each first sub-isolation channel 212 of the power-off signal generation circuit 21 corresponds to a sub-converter 11 of the intermediate stage converter. The first sub-isolation channel 212 is used to transmit the power-off signal generated by the power-off signal generation sub-circuit 211 to its corresponding sub-converter 11.

[0147] Specifically, the power-off signal generation circuit 21 corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit 211, which generates a power-off signal after receiving the power-off trigger signal generated by the corresponding signal plug-in 5. Each first sub-isolation channel 212 included in the power-off signal generation circuit 21 is used to transmit the power-off signal generated by the power-off signal generation sub-circuit 211 to the corresponding sub-converter 11.

[0148] Each first sub-isolation channel 212 can be directly connected to the output of the power-off signal generation sub-circuit 211 to obtain a power-off signal. When there are multiple first sub-isolation channels 212, the input of a first sub-isolation channel 212 can be directly connected to the output of the power-off signal generation sub-circuit 211, or it can be indirectly connected to the output of the power-off signal generation sub-circuit 211 through other first sub-isolation channels 212 to obtain the power-off signal generated by the power-off signal generation sub-circuit 211.

[0149] For example, such as Figure 32 As shown, the power-off signal generation circuit 21 corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit 211 and two first sub-isolation channels 212, each first sub-isolation channel corresponding to a sub-converter 11. The input terminal of the power-off signal generation sub-circuit 211 is connected to the signal plug-in 5, and the output terminal of the power-off signal generation sub-circuit 211 is connected to the input terminals of the two first sub-isolation channels 212 respectively. During hot-swapping, each signal plug-in 5 generates a power-off trigger signal and then sends it to the connected power-off signal generation circuit. After receiving the key trigger signal, the power-off signal generation circuit 21-1 generates a power-off signal and then sends the power-off signal to the corresponding converter 1 to shut down the input stage converter. After receiving the key trigger signal, the power-off signal generation circuit 21-3 generates a power-off signal and then sends the power-off signal to the corresponding converter 1 to shut down the output stage converter. After receiving the power-off trigger signal, the power-off signal generation sub-circuit 211 generates a power-off signal and then transmits the power-off signal to the two first sub-isolation channels 212 respectively. Each first sub-isolation channel 212 transmits a shutdown signal to the connected sub-converter 11 to shut down the sub-converter of the intermediate stage converter.

[0150] Figure 33 This is a schematic diagram of the power supply device provided in the thirty-second embodiment of this application, as shown below. Figure 33 As shown, based on the above embodiments, further, any one stage converter including multiple sub-converters 11 in the input stage converter and the output stage converter is an end-stage converter. Each sub-converter 11 included in the end-stage converter corresponds to a second sub-isolation channel 221. The second sub-isolation channel 221 is used to transmit the received power-off signal to its corresponding sub-converter.

[0151] Specifically, each sub-converter 11 in the terminal converter corresponds to a second sub-isolation channel 221. The second sub-isolation channel 221 is used to transmit a power-off signal. The power-off signal received by the isolation channel 22 corresponding to the terminal converter comes from the power-off signal generation circuit 21 or other isolation channels 22. The power-off signal generation circuit 21 can be the power-off signal generation circuit 21 corresponding to any stage converter 1 other than the terminal converter, and the other isolation channels 22 can be the isolation channels 22 corresponding to any stage converter 1 other than the terminal converter.

[0152] The input terminal of each second sub-isolation channel 221 included in the isolation channel 22 corresponding to the terminal converter can be directly connected to the output terminal of the power-off signal generation circuit 21 to directly obtain the power-off signal. The input terminal of each second sub-isolation channel 221 included in the isolation channel 22 corresponding to the terminal converter can be connected to the input terminals of other isolation channels 22 to indirectly obtain the power-off signal. Alternatively, among the multiple second sub-isolation channels 221 included in the isolation channel 22 corresponding to the terminal converter, at least one second sub-isolation channel 221 has its input terminal connected to the power-off signal generation circuit 21 or other isolation channels 22, meaning that the power-off signal received by at least one second sub-isolation channel 221 can be obtained through other second sub-isolation channels 221.

[0153] For example, such as Figure 34 As shown, the isolation channel 22 corresponding to the terminal converter includes a second sub-isolation channel 221-1, a second sub-isolation channel 221-2, and a second sub-isolation channel 221-3. The input terminal of the second sub-isolation channel 221-1 is externally connected to the output terminal of other isolation channels or the power-off signal generation circuit. The output terminal of the second sub-isolation channel 221-1 is connected to the input terminal of the second sub-isolation channel 221-2, and the output terminal of the second sub-isolation channel 221-2 is connected to the input terminal of the second sub-isolation channel 221-3. When the second sub-isolation channel 221-1 receives a power-off signal, it transmits the power-off signal to the corresponding sub-converter 11 and then to the second sub-isolation channel 221-2. The second sub-isolation channel 221-2 transmits the power-off signal to the corresponding sub-converter 11 and then to the second sub-isolation channel 221-3. The second sub-isolation channel 221-3 transmits the power-off signal to the corresponding sub-converter 11.

[0154] For example, such as Figure 35As shown, the isolation channel 22 corresponding to the first-stage converter 1, which includes multiple sub-converters 11, includes a second sub-isolation channel 221-1, a second sub-isolation channel 221-2, and a second sub-isolation channel 221-3. The input terminal of the second sub-isolation channel 221-1 is externally connected to the output terminal of other isolation channels or the power-off signal generation circuit. The output terminal of the second sub-isolation channel 221-1 is connected to the input terminals of the second sub-isolation channel 221-2 and the second sub-isolation channel 221-3. When the second sub-isolation channel 221-1 receives a power-off signal, it transmits the power-off signal to the corresponding sub-converter 11, and also transmits the power-off signal to the second sub-isolation channels 221-2 and 221-3. The second sub-isolation channel 221-2 transmits the power-off signal to the corresponding sub-converter 11, and the second sub-isolation channel 221-3 transmits the power-off signal to the corresponding sub-converter 11.

[0155] Figure 36 This is a schematic diagram of the power supply device provided in the thirty-fifth embodiment of this application, as shown below. Figure 36 As shown, based on the above embodiments, further, any stage converter in the multi-stage converter, excluding the input stage converter and the output stage converter and including multiple sub-converters 11, is an intermediate stage converter. The isolation channel 22 corresponding to the intermediate stage converter includes at least one second sub-isolation channel 221. Each second sub-isolation channel 221 included in the isolation channel 22 corresponding to the intermediate stage converter corresponds to one sub-converter 11 included in the intermediate stage converter. The second sub-isolation channel 221 is used to transmit the received power-off signal to its respective corresponding sub-converter 11.

[0156] Specifically, each second sub-isolation channel 221 in the isolation channel 22 corresponding to the intermediate stage converter corresponds to one sub-converter 11 in the intermediate stage converter. The second sub-isolation channel 221 is used to transmit a power-off signal. The power-off signal received by the isolation channel 22 corresponding to the intermediate stage converter comes from the power-off signal generation circuit 21 or other isolation channels 22. The power-off signal generation circuit 21 can be the power-off signal generation circuit 21 corresponding to any stage converter 1 other than the intermediate stage converter, and the other isolation channels 22 can be the isolation channels 22 corresponding to any stage converter 1 other than the intermediate stage converter.

[0157] The input terminal of each second sub-isolation channel 221 included in the isolation channel 22 corresponding to the intermediate stage converter can be directly connected to the output terminal of the power-off signal generation circuit 21 to directly obtain the power-off signal. The input terminal of each second sub-isolation channel 221 included in the isolation channel 22 corresponding to the intermediate stage converter can be connected to the input terminals of other isolation channels 22 to indirectly obtain the power-off signal. Alternatively, among the multiple second sub-isolation channels 221 included in the isolation channel 22 corresponding to the intermediate stage converter, at least one second sub-isolation channel 221 has its input terminal connected to the power-off signal generation circuit 21 or other isolation channels 22, meaning that the power-off signal received by at least one second sub-isolation channel 221 can be obtained through other second sub-isolation channels 221 in the isolation channel 22 corresponding to the intermediate stage converter.

[0158] For example, such as Figure 37 As shown, the intermediate stage converter includes four sub-converters. The isolation channels 22 corresponding to the intermediate stage converters include a second sub-isolation channel 221-1, a second sub-isolation channel 221-2, and a second sub-isolation channel 221-3. The input terminal of the second sub-isolation channel 221-1 is externally connected to the output terminal of other isolation channels or the power-off signal generation circuit. The output terminal of the second sub-isolation channel 221-1 is connected to the input terminals of the second sub-isolation channel 221-2 and the second sub-isolation channel 221-3. When the second sub-isolation channel 221-1 receives a power-off signal, it transmits the power-off signal to the corresponding sub-converter 11, and also transmits the power-off signal to the second sub-isolation channels 221-2 and 221-3. The second sub-isolation channel 221-2 transmits the power-off signal to the corresponding sub-converter 11, and the second sub-isolation channel 221-3 transmits the power-off signal to the corresponding sub-converter 11.

[0159] Figure 38 This is a schematic diagram of the power-off signal generation circuit provided in the thirty-seventh embodiment of this application, as shown below. Figure 38 As shown, based on the above embodiments, the power-off signal generation circuit 21 further includes a first resistor R1 and a second resistor R2. The first end of the first resistor R1 is connected to the first power supply, the first end of the second resistor R2 is grounded, the second end of the first resistor R1 is connected to the signal plug-in 5 corresponding to the power-off signal generation circuit 21, and the second end of the first resistor R1 and the second end of the second resistor R2 are connected to output the power-off signal.

[0160] Specifically, when signal plug-in 5 is inserted into the corresponding plug-in, the signal plug-in is grounded, causing the second terminals of the first resistor R1 and the second resistor R2 connected to signal plug-in 5 to output a low level, thus preventing the generation of a shutdown signal. When signal plug-in 5 is detached from the corresponding plug-in, signal plug-in 5 disconnects from ground, generating a shutdown trigger signal. Due to the action of the first power supply, the second terminals of the first resistor R1 and the second resistor R2 change from a low level to a high level, thereby outputting the shutdown signal. The output terminal of the shutdown signal generation circuit 21 can be connected to the converter's drive circuit, driving the converter's drive circuit to shut down the converter by outputting a high level. The voltage Vcc of the first power supply can be 3.3V, 5V, 12V, etc., set according to actual needs; this embodiment does not limit the specific voltage.

[0161] Figure 39 This is a schematic diagram of the power-off signal generation circuit provided in the thirty-ninth embodiment of this application, as shown below. Figure 39 As shown, based on the above embodiments, the power-off signal generation circuit 21 further includes a third resistor R3, a fourth resistor R4, and a switching device Q. The first end of the third resistor R3 is connected to the second power supply, and the second end of the third resistor R3 is connected to the signal plug-in 5 corresponding to the power-off signal generation circuit 21. The first end of the fourth resistor R4 is connected to the third power supply, and the second end of the fourth resistor R4 is connected to the first end of the switching device Q. The second end of the switching device Q is connected to the signal plug-in 5 corresponding to the power-off signal generation circuit 21. The third end of the switching device Q is grounded, and the second end of the fourth resistor R4 outputs the power-off signal.

[0162] Specifically, when signal plug-in 5 is inserted into the corresponding plug-in, signal plug-in 5 is grounded, causing the second terminal of the switching device Q connected to signal plug-in 5 to be grounded, switching device Q to be cut off, and the second terminal of the fourth resistor R4 outputs a high-level signal. When signal plug-in 5 is disconnected from the corresponding plug-in, signal plug-in 5 is disconnected from ground, and the second terminal of switching device Q becomes high-level under the action of the second power supply, switching device Q is turned on, causing the second terminal of the fourth resistor R4 to be grounded, and the second terminal of the fourth resistor R4 changes from a high-level signal to a low-level signal, thereby outputting the shutdown signal. The second terminal of the fourth resistor R4 can be connected to the converter's drive circuit, and the converter's drive circuit is driven to shut down the converter by outputting a low-level signal. The voltages Vcc1 and Vcc2 of the second power supply can be 3.3V, 5V, 12V, etc., and can be set according to actual needs; this embodiment does not limit the specific voltage. The switching device Q can be a transistor, a metal-oxide-semiconductor field-effect transistor (MOSFET), an insulated gate bipolar transistor (IGBT), or other devices.

[0163] Based on the above embodiments, the isolation channel 22 may further be an isolation transformer, a capacitive isolation digital isolation chip, a magnetic isolation digital isolation chip, or an isolation optocoupler, selected according to actual needs. This application embodiment does not limit the choice.

[0164] Based on the above embodiments, the power-off signal generation sub-circuit 211 can further adopt the same... Figure 38 or Figure 39 The circuit structure of the power-off signal generation circuit 21 shown is the same. The selection can be made according to actual needs, and will not be described in detail here.

[0165] Based on the above embodiments, the first sub-isolation channel 212 can further employ an isolation transformer, a capacitive isolation digital isolation chip, a magnetic isolation digital isolation chip, or an isolation optocoupler, selected according to actual needs; this embodiment of the invention does not impose any limitation. The second sub-isolation channel 221 can employ an isolation transformer, a capacitive isolation digital isolation chip, a magnetic isolation digital isolation chip, or an isolation optocoupler, selected according to actual needs; this embodiment of the invention does not impose any limitation.

[0166] Based on the above embodiments, the length of the signal plug-in 5 is smaller than that of the input power plug-in 3 and smaller than that of the output power plug-in 4.

[0167] During hot-swapping, since the length of signal plug 5 is less than the length of input power plug 3 and output power plug 4, signal plug 5 is the first to detach from its corresponding plug, generating a shutdown trigger signal. This causes shutdown signal generation unit 2 to generate a shutdown signal, shutting down the converter. Because the signal transmission time is in the microsecond range, which is much shorter than the millisecond range of time it takes for input power plug 3 and output power plug 4 to detach from their corresponding plugs, it ensures that the input stage converter and output stage converter are shut down at least before the input power plug 3 and output power plug 4 detach from their respective plugs, thus avoiding the generation of electric arcs.

[0168] Based on the above embodiments, the input power plug-in 3, the output power plug-in 4, and at least one signal plug-in 5 can be disposed in different connectors, depending on actual needs. This embodiment of the invention does not limit the specific configuration.

[0169] For example, the input power plug-in 3 can be placed in the first connector, the output power plug-in 4 can be placed in the second connector, and each signal plug-in 5 can be placed in the third connector.

[0170] For example, at least two of the three components—input power component 3, output power component 4, and at least one signal component 5—can be placed in the fourth connector, and the remaining component can be placed in the fifth connector. For instance, input power component 3 and output power component 4 can be placed in the fourth connector, and all signal components 5 can be placed in the fifth connector.

[0171] Understandably, the input power plug-in 3, the output power plug-in 4, and at least one signal plug-in 5 can also be located in the same connector.

[0172] In the description of this specification, the references to terms such as "an embodiment," "a specific embodiment," "some embodiments," "for example," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0173] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above descriptions are merely specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A power supply device, characterized in that, It includes a multi-stage converter, a power-off signal generation unit, an input power module, an output power module, and at least one signal module, wherein: Each stage of the converter is cascaded in sequence. The input stage converter of the multi-stage converter is connected to the input power module, and the output stage converter of the multi-stage converter is connected to the output power module. The at least one signal plug-in is connected to the input terminal of the power-off signal generation unit, and the output terminal of the power-off signal generation unit is connected to each stage of the converter. Each signal plug-in is used to generate a shutdown trigger signal. The shutdown signal generation unit is used to generate a shutdown signal based on the shutdown trigger signal. The shutdown signal is used to shut down at least the input stage converter and the output stage converter before the input power plug-in and the output power plug-in disengage from their respective corresponding plug-in plug-in plugs. The input power plug-in and the output power plug-in disengage from their respective plug-in plugs synchronously. The power-off signal generation unit includes a power-off signal generation circuit and an isolation channel. The sum of the number of power-off signal generation circuits and the number of isolation channels is not less than 2 and not greater than the number of stages of the multi-stage converter. Each power-off signal generation circuit corresponds to a stage converter, and each isolation channel corresponds to a stage converter. Each stage converter corresponding to each power-off signal generation circuit and isolation channel includes the input stage converter and the output stage converter. The input terminal of each power-off signal generation circuit is connected to the corresponding signal plug-in. Each isolation channel is used to transmit the received power-off signal to its corresponding stage converter. Each isolation channel is connected to the nearest power-off signal generation circuit.

2. The power supply device according to claim 1, characterized in that, The power-off signal generation unit includes multiple power-off signal generation circuits. The input terminal of each power-off signal generation circuit is connected to its corresponding signal plug-in. Each power-off signal generation circuit corresponds to a first-stage converter. The multiple power-off signal generation circuits correspond to the input stage converter and the output stage converter.

3. The power supply device according to claim 1, characterized in that, There are multiple isolation channels, and the input terminal of at least one isolation channel is connected to the output terminal of one of the power-off signal generation circuits. At least one isolation channel receives a power-off signal from another isolation channel.

4. The power supply device according to claim 1, characterized in that, The power-off signal generation unit includes a power-off signal generation circuit and at least two isolation channels. The input terminal of the power-off signal generation circuit is connected to the signal plug-in. Each isolation channel corresponds to a first-stage converter. The converters corresponding to the at least two isolation channels include the input-stage converter and the output-stage converter. Each isolation channel is used to transmit the power-off signal generated by the power-off signal generation circuit to the first-stage converter corresponding to each isolation channel.

5. The power supply device according to claim 2 or 3, characterized in that, The input stage converter and the output stage converter include multiple sub-converters. Any stage converter is an end-stage converter. The power-off signal generation circuit corresponding to the end-stage converter is used to turn off each sub-converter of the end-stage converter.

6. The power supply device according to claim 5, characterized in that, The power-off signal generation circuit corresponding to the terminal converter includes multiple power-off signal generation sub-circuits. Each sub-converter corresponds to one power-off signal generation sub-circuit, and the input terminal of each power-off signal generation sub-circuit is connected to a signal plug-in.

7. The power supply device according to claim 5, characterized in that, The power-off signal generation circuit corresponding to the terminal converter includes a power-off signal generation sub-circuit and a first sub-isolation channel. Each sub-converter in the terminal converter corresponds to a power-off signal generation sub-circuit or a first sub-isolation channel. The number of sub-converters included in the terminal converter is equal to the sum of the number of corresponding power-off signal generation sub-circuits and the number of first sub-isolation channels. The first sub-isolation channel is used to transmit the received power-off signal to its corresponding sub-converter.

8. The power supply device according to claim 7, characterized in that, The power-off signal generation circuit includes multiple first sub-isolation channels. At least one input terminal of the first sub-isolation channel is connected to the output terminal of the power-off signal generation sub-circuit. At least one first sub-isolation channel receives a power-off signal from another first sub-isolation channel.

9. The power supply device according to claim 5, characterized in that, The power-off signal generation circuit corresponding to the terminal converter includes a power-off signal generation sub-circuit and multiple first sub-isolation channels. The input terminal of the power-off signal generation sub-circuit is connected to the signal plug-in. Each sub-converter in the terminal converter corresponds to a first sub-isolation channel. The first sub-isolation channel is used to transmit the power-off signal generated by the power-off signal generation sub-circuit to its corresponding sub-converter.

10. The power supply device according to claim 2 or 3, characterized in that, In the multi-stage converter, any stage converter other than the input stage converter and the output stage converter, and including multiple sub-converters, is an intermediate stage converter; the shutdown signal generation circuit corresponding to the intermediate stage converter is used to shut down at least one sub-converter included in the intermediate stage converter.

11. The power supply device according to claim 10, characterized in that, The power-off signal generation circuit corresponding to the intermediate stage converter includes at least one power-off signal generation sub-circuit. Each power-off signal generation sub-circuit corresponds to a sub-converter, and the input terminal of each power-off signal generation sub-circuit is connected to a signal plug-in.

12. The power supply device according to claim 10, characterized in that, The power-off signal generation circuit corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit and a first sub-isolation channel. The sum of the number of power-off signal generation sub-circuits and the number of first sub-isolation channels is not less than 2 and not greater than the number of sub-converters included in the intermediate stage converter. Each power-off signal generation sub-circuit corresponds to one sub-converter, and each first sub-isolation channel corresponds to one sub-converter. The first sub-isolation channel is used to transmit the received power-off signal to its corresponding sub-converter.

13. The power supply device according to claim 12, characterized in that, The power-off signal generation circuit corresponding to the intermediate stage converter includes multiple first sub-isolation channels. At least one input terminal of the first sub-isolation channel is connected to the output terminal of the power-off signal generation sub-circuit. At least one first sub-isolation channel receives a power-off signal from another first sub-isolation channel.

14. The power supply device according to claim 10, characterized in that, The power-off signal generation circuit corresponding to the intermediate stage converter includes a power-off signal generation sub-circuit and at least one first sub-isolation channel. The input terminal of the power-off signal generation sub-circuit is connected to the signal plug-in. Each first sub-isolation channel corresponds to a sub-converter of the intermediate stage converter. The first sub-isolation channel is used to transmit the power-off signal generated by the power-off signal generation sub-circuit to its corresponding sub-converter.

15. The power supply device according to any one of claims 2 to 4, characterized in that, The power-off signal generating circuit includes a first resistor and a second resistor. The first end of the first resistor is connected to a first power supply, the first end of the second resistor is grounded, and the second end of the first resistor is connected to a corresponding signal plug-in. The second ends of the first resistor and the second ends of the second resistor are connected to output the power-off signal.

16. The power supply device according to any one of claims 2 to 4, characterized in that, The power-off signal generation circuit includes a third resistor, a fourth resistor, and a switching device. The first end of the third resistor is connected to the second power supply, and the second end of the third resistor is connected to the signal plug-in corresponding to the power-off signal generation circuit. The first end of the fourth resistor is connected to the third power supply, and the second end of the fourth resistor is connected to the first end of the switching device. The second end of the switching device is connected to the signal plug-in corresponding to the power-off signal generation circuit. The third end of the switching device is grounded, and the second end of the fourth resistor outputs the power-off signal.

17. The power supply device according to claim 1, 3 or 4, characterized in that, If any one stage converter, which includes multiple sub-converters in the input stage converter and the output stage converter, is an end-stage converter, then the isolation channel corresponding to the end-stage converter includes multiple second sub-isolation channels, and each sub-converter included in the end-stage converter corresponds to one second sub-isolation channel; If any stage converter in the multi-stage converter, excluding the input stage converter and the output stage converter, and including multiple sub-converters, is an intermediate stage converter, then the isolation channel corresponding to the intermediate stage converter includes at least one second sub-isolation channel. Each second sub-isolation channel included in the isolation channel corresponding to the intermediate stage converter corresponds to one of the sub-converters included in the intermediate stage converter. The second sub-isolation channel is used to transmit the received power-off signal to its respective corresponding sub-converter.

18. The power supply device according to claim 1, 3 or 4, characterized in that, The isolation channel uses an isolation transformer, a capacitive isolation digital isolation chip, a magnetic isolation digital isolation chip, or an isolation optocoupler.

19. The power supply device according to claim 1, characterized in that, The length of the signal plug-in is less than that of the input power plug-in and less than that of the output power plug-in.

20. The power supply device according to claim 1, characterized in that, The input power module, the output power module, and the at least one signal module are disposed in different connectors.

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