Circuit module with communication function, multi-module circuit device and photovoltaic system

Abstract

The present invention provides a circuit module with communication function, a multi-module circuit device and a photovoltaic system, which can realize serial communication between circuit modules with serial outputs, and further, it is not necessary to configure a communication controller for each circuit module, which effectively reduces the cost, simplifies the circuit, and is easy to maintain and arrange. At the same time, for the situation where the outputs of various circuit modules in the series circuit are serially connected but floating, the present invention can also make the serial transmission signal more convenient to meet the needs of communication and information processing by increasing or decreasing the level of the input and output signals.

Description

Technical Field

[0001] The present invention relates to the field of circuits, and in particular to a circuit module with communication functions, a multi-module circuit device and a photovoltaic system. Background Art

[0002] In the electricity usage scenario, multiple circuit modules can be used to generate electricity separately. For example, in the photovoltaic field, the circuit module can be a photovoltaic module. Then, the circuit modules can be connected in parallel or in series. At the same time, the circuit modules also need to communicate with the outside world. This communication can be used to transmit control information, reporting information, etc. After receiving the information, each circuit module needs to process the information.

[0003] In an application scenario where the positive and negative output terminals of the circuit modules are connected in series in sequence, the voltages of the circuit modules can be superimposed through the series connection of the circuit modules, which is beneficial to increase the overall output voltage, output power, etc.

[0004] In the existing related technologies, the conventional communication method of the circuit modules that are connected in series to output electric energy is to configure an independent communication controller for each level of circuit modules that need to communicate, so as to perform independent communication management for each level of circuit modules. At the same time, an independent control circuit power supply is required and the ground is not shared. The transmission of the communication signal often needs to be processed by optical coupling isolation, and then transmitted to the terminal network by wire or wireless means. The disadvantage of conventional communication is that there are a lot of hardware such as communication power supply, controller and signal transceiver module to be used, the lines are complicated, and there are a lot of supporting materials, which is very costly. The later maintenance cost is also very expensive. It can be seen that it will cause high cost, complicated lines, and difficult maintenance and layout. Summary of the invention

[0005] The present invention provides a circuit module with communication function, a multi-module circuit device and a photovoltaic system to solve the problems of high cost, complicated circuits, and difficulty in maintenance and layout.

[0006] According to a first aspect of the present invention, there is provided a circuit module with a communication function, comprising an electric energy output submodule, a communication processing submodule and an information processing submodule, wherein the electric energy output submodule is connected in series with other circuit modules via a positive output terminal and a negative output terminal, and the communication processing submodule is connected to the information processing submodule; the interface components of the information processing submodule, the communication processing submodule and the circuit module all use the potential of the negative output terminal as a reference ground;

[0007] The communication processing submodule communicates with the adjacent circuit module of the next stage connected in series through the interface component. The communication processing submodule is used to, before using the interface component to send a first signal to the adjacent circuit module, perform a boost shift on the first signal according to the potential difference between the positive output terminal and the negative output terminal, and: after receiving a second signal from the adjacent circuit module using the interface component, perform a lower shift on the second signal according to the potential difference, and send the lowered and shifted second signal to the information processing submodule.

[0008] Optionally, the interface component includes a receiving interface and a sending interface, and the communication processing sub-module includes a level-up shifter and a level-down shifter; one end of the level-up shifter is directly or indirectly connected to the sending interface, and one end of the level-down shifter is directly or indirectly connected to the receiving interface, and the level-up shifter and the level-down shifter are configured so that their shift amplitudes are associated with the potential difference; the other end of the level-down shifter and the other end of the level-up shifter are both directly or indirectly connected to the information processing sub-module.

[0009] Optionally, the level-up shifter and the level-down shifter are also connected to a level providing circuit, and the level providing circuit is used to provide a high-voltage power level to the level-up shifter and the level-down shifter, so that the level-up shifter and the level-down shifter perform level shifting according to the high-voltage power level, and the high-voltage power level is determined based on the voltage of the power interface component of the circuit module and the potential difference.

[0010] Optionally, the level boost shifter is configured to shift the logic level of the first signal to a first interval according to the high voltage power level during boost shifting; the minimum value of the first interval is the potential difference, and the maximum value of the first interval is the sum of the potential difference and a reference voltage determined according to the voltage of the power interface component;

[0011] The level down shifter is configured to shift the logic level of the first signal to a second interval according to the high voltage power supply level during down shifting; the minimum value of the second interval is 0 volts, and the maximum value of the second interval is the reference voltage;

[0012] The first interval and the second interval are characterized by taking the potential of the negative output terminal as a reference ground.

[0013] According to a second aspect of the present invention, a multi-module circuit device is provided, comprising: at least two stages of circuit modules, except for the highest stage of the at least two stages of circuit modules, the positive output terminal of each stage of the circuit modules is connected to the negative output terminal of the subsequent stage of the circuit module, and the at least two stages of circuit modules are used to output electric energy to a load; the circuit modules use the potential of the negative output terminal as a reference ground,

[0014] Wherein, except for the highest level circuit module, the high-side interface components of each level of the circuit module are connected to the low-side interface components of the subsequent level of the circuit module;

[0015] In addition to the highest level circuit module, each of the circuit modules is further configured to:

[0016] When a first low-end signal to be sent to a subsequent circuit module is generated after information processing, the first low-end signal is lifted and shifted according to the potential difference between the positive output terminal and the negative output terminal of the circuit module to obtain a first high-end signal, and the first high-end signal is sent to the subsequent circuit module using its high-end side interface component, and / or:

[0017] When the high-side interface component of the circuit module receives a second high-end signal that needs information processing, the second high-end signal is lowered and shifted according to the potential difference to obtain a lowered low-end signal, and then information processing is performed on the lowered low-end signal.

[0018] Optionally, the first low-end signal is generated after the circuit module performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the first low-end signal is generated after the circuit module performs information processing on the reduced low-end signal.

[0019] Optionally, except for the lowest level circuit module, each of the circuit modules is further used for:

[0020] When a second low-end signal to be sent to a previous stage circuit module is generated after information processing, the second low-end signal is sent to the previous stage circuit module by using its low-end side interface component.

[0021] Optionally, the second low-end signal is generated after the circuit module performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the second low-end signal is generated after the circuit module performs information processing on the reduced low-end signal.

[0022] Optionally, the circuit module includes an electric energy output submodule, a communication processing submodule and an information processing submodule; the information processing submodule, the electric energy output submodule, the high-end side interface component and the low-end side interface component all use the potential of the negative output terminal of the circuit module to which they belong as a reference ground;

[0023] The power output submodule of each circuit module is connected in series with the power output submodules of other circuit modules through its positive output terminal and / or negative output terminal;

[0024] The communication processing submodule is directly or indirectly connected to the information processing submodule, the information processing submodule is directly or indirectly connected to the low-end interface component, and the communication processing submodule is directly or indirectly connected to the high-end interface component;

[0025] In addition to the highest level circuit module, the communication processing submodule of each level circuit module is used for:

[0026] When the information processing submodule generates the first low-end signal through information processing, the first low-end signal is lifted and shifted according to the potential difference to obtain the first high-end signal, and the first high-end signal is sent to the subsequent circuit module by using the high-end side interface component; and / or:

[0027] When the high-end side interface component receives the second high-end signal, the second high-end signal is lowered and shifted according to the potential difference to obtain the lowered low-end signal, and the lowered low-end signal is sent to the information processing sub-module, so that the information processing sub-module performs information processing on the lowered low-end signal.

[0028] Optionally, the first low-end signal is generated after the information processing submodule performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the first low-end signal is generated after the information processing submodule performs information processing on the reduced low-end signal.

[0029] Optionally, except for the lowest level circuit module, the information processing submodule of each circuit module is further used for:

[0030] When a second low-end signal to be sent to a previous-stage circuit module is generated through information processing, the second low-end signal is sent to the previous-stage circuit module using its low-end side interface component.

[0031] Optionally, the second low-end signal is generated after the information processing submodule performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the second low-end signal is generated after the information processing submodule performs information processing on the reduced low-end signal.

[0032] Optionally, the high-end side interface component includes a high-end side receiving interface and a high-end side transmitting interface, the low-end side interface component includes a low-end side receiving interface and a low-end side transmitting interface, and the communication processing sub-module includes a level-up shifter and a level-down shifter; one end of the level-up shifter is directly or indirectly connected to the high-end side transmitting interface, and the other end is directly or indirectly connected to the information processing sub-module, one end of the level-down shifter is directly or indirectly connected to the high-end side receiving interface, and the other end is directly or indirectly connected to the information processing sub-module, the information processing sub-module is also connected to the low-end side receiving interface and the low-end side transmitting interface, and the level-up shifter and the level-down shifter are configured so that their shift amplitudes are associated with the potential difference.

[0033] Optionally, the communication processing submodule further includes a power level providing circuit, the level boosting shifter and the level lowering shifter are both connected to the power level providing circuit, the power level providing circuit is used to provide a high-voltage power level to the level boosting shifter and the level lowering shifter, and the high-voltage power level is determined according to the voltage of the power interface component of the circuit module and the potential difference;

[0034] The level boost shifter is configured to shift the logic level of the first low-end signal to a first interval during boost shifting; the minimum value of the first interval is the potential difference, and the maximum value of the first interval is the sum of the potential difference and a reference voltage determined according to the voltage of the power interface component;

[0035] The level down shifter is configured to shift the logic level of the second high-end signal to a second interval when down shifting; the minimum value of the second interval is 0 volts, and the maximum value of the second interval is the reference voltage;

[0036] The first interval and the second interval are characterized by using the potential of the negative output terminal of the circuit module to which they belong as a reference ground.

[0037] Optionally, the device further includes a controller, a communication interface of which is connected to a low-end interface component of any one of the circuit modules; the first low-end signal and / or the second high-end signal is directly or indirectly determined based on a control signal issued by the communication interface of the controller.

[0038] According to a third aspect of the present invention, a photovoltaic system is provided, comprising a multi-module circuit device according to the second aspect and optional solutions thereof, wherein the circuit modules are photovoltaic components or are connected to the photovoltaic components.

[0039] The circuit module with communication function, multi-module circuit device and photovoltaic system provided by the present invention can realize serial communication between circuit modules with serial outputs, and further, it is not necessary to configure a communication controller for each circuit module, which effectively reduces the cost, simplifies the circuit, and is easy to maintain and arrange. At the same time, since the negative output end of the circuit module is connected in series with the positive output end of the adjacent circuit module, the reference ground generated by it is the potential of the positive output end of the adjacent circuit module of the previous level, that is, each circuit module is floating. When processing information, each circuit module uses the potential of its own negative output end as the reference ground for signal transmission and information processing. Furthermore, for the situation where the outputs of the circuit modules in the series circuit are serially connected but floating, the present invention can also make the serially transmitted signal more convenient to meet the needs of communication and information processing by increasing or decreasing the input and output signals.

[0040] In addition, since the present invention does not need to configure a controller for each circuit module, it can also avoid mutual interference between signals of multiple controllers, thereby ensuring the communication effect of the signals.

[0041] In an optional implementation manner of the present invention, based on a serial communication method, the positioning of each circuit module can be easily achieved. At the same time, the controller can be connected to any circuit module, which has better flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 is a schematic diagram of a circuit principle of a circuit module with a communication function in one embodiment of the present invention;

[0044] Figure 2 is a schematic diagram of a circuit principle of a circuit module with a communication function in another embodiment of the present invention;

[0045] Figure 3 is a schematic diagram of a circuit principle of a circuit module with a communication function in another embodiment of the present invention;

[0046] Figure 4 It is a circuit principle schematic diagram of a circuit module with communication function in another embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 100-circuit module;

[0049] 110-power output submodule;

[0050] 120-communication processing submodule;

[0051] 121-Level boost shifter;

[0052] 122-level down shifter;

[0053] 123-charge pump;

[0054] 130-information processing submodule;

[0055] 140-interface component;

[0056] 141-sending interface;

[0057] 142-receiving interface;

[0058] 150- positive output terminal;

[0059] 160- negative output terminal;

[0060] 170-power interface assembly;

[0061] 180-Buffer.

[0062] Figure 5 is a schematic diagram of a circuit principle of a multi-module circuit device in one embodiment of the present invention;

[0063] Figure 6 is a circuit principle schematic diagram of a multi-module circuit device in another embodiment of the present invention;

[0064] Figure 7 is a circuit principle schematic diagram of a multi-module circuit device in another embodiment of the present invention;

[0065] Figure 8 yes Figure 7 A schematic diagram of the circuit principle of the circuit module in the device shown;

[0066] Fig. 9 It is a schematic diagram of the principle of lifting and shifting in one embodiment of the present invention;

[0067] Fig.10 is a schematic diagram of the principle of reducing displacement in one embodiment of the present invention;

[0068] Fig.11 is a schematic diagram of the connection between a multi-module circuit device and a controller in one embodiment of the present invention;

[0069] Fig.12 It is a connection diagram of a multi-module circuit device and a controller in another embodiment of the present invention.

[0070] Description of reference numerals:

[0071] 200-circuit module;

[0072] 210-high-end side interface component;

[0073] 211-high-end side sending interface;

[0074] 212-high-end side receiving interface;

[0075] 220- low-end side interface assembly;

[0076] 221- low-end receiving interface;

[0077] 222- low-end side transmission interface;

[0078] 230- positive output terminal;

[0079] 240- negative output terminal;

[0080] 250-power output submodule;

[0081] 260-communication processing submodule;

[0082] 261-Level Boost Shifter;

[0083] 262-Level Down Shifter;

[0084] 263- Charge pump;

[0085] 270-information processing submodule;

[0086] 280-power interface assembly;

[0087] 281-positive end;

[0088] 282-negative terminal;

[0089] 290-buffer;

[0090] 300-load;

[0091] 400-power supply;

[0092] 500-Controller. DETAILED DESCRIPTION

[0093] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0094] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0095] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0096] Figure 1 It is a schematic diagram of the circuit principle of a circuit module with communication function in one embodiment of the present invention.

[0097] Please refer to Figure 1 The circuit module 100 with communication function includes an electric energy output submodule 110 , a communication processing submodule 120 and an information processing submodule 130 .

[0098] The power output submodule 110 is connected in series to other circuit modules via the positive output terminal 150 and the negative output terminal 160 . The circuit structure of the other circuit module may be the same as that of the present circuit module or may be different from that of the present circuit module 100 .

[0099] The negative output terminal of one of the adjacent circuit modules can be connected to the positive output terminal of the circuit module 100, and further, the adjacent circuit module and the circuit module 100 can be understood as circuits that can use the potential of their negative output terminals as reference grounds during information processing. That is, the circuit module 100 can use the potential of the negative output terminal of the circuit module 100 as a reference ground during information processing; the adjacent circuit module can also use the potential of the negative output terminal of the adjacent circuit module as a reference ground during information processing.

[0100] In the circuit module 100, the communication processing submodule 120 is connected to the information processing submodule 130; the information processing submodule 130 uses the potential of the negative output terminal as a reference ground. For example, it can be understood that: in the circuit module 100, if the potential difference of a potential relative to the earth is the same as the potential difference of the potential of the negative output terminal relative to the earth, then the potential in the circuit module 100 can be regarded as grounded, and further, can correspond to a logic level of 0 volts.

[0101] It can be seen that in this embodiment, the information processing submodule 130, the communication processing submodule 120, and the interface component 140 of the circuit module all use the potential of the negative output terminal as a reference ground.

[0102] In this embodiment, the communication processing submodule 120 communicates with the adjacent circuit module of the next stage connected in series through the interface component 140, and the communication may include input communication and output communication.

[0103] It can be seen that this embodiment can realize serial communication between various circuit modules, and further, there is no need to configure a communication controller for each circuit module, which effectively reduces the cost, simplifies the circuit, and is easy to maintain and arrange.

[0104] The communication processing submodule 120 is used to boost and shift the first signal according to the potential difference between the positive output terminal 150 and the negative output terminal 160 before sending the first signal to the adjacent circuit module using the interface component 140 .

[0105] The first signal can be any logic level signal determined by taking the negative output terminal of the circuit module 100 as the reference ground. When sending it to the adjacent circuit module, since the adjacent circuit module takes the potential of its negative output terminal as the reference ground, that is, the adjacent circuit module takes the potential of the positive output terminal 150 of the circuit module 100 as the reference ground, the signal received by the adjacent circuit module actually takes the potential of the negative output terminal of the adjacent circuit module as the reference ground through the above-mentioned boosting and shifting, and the boosted and shifted signal can meet the needs of the adjacent circuit module, that is, the next-stage circuit module, when receiving and processing information.

[0106] The communication processing submodule 120 is also used to, after receiving the second signal from the adjacent circuit module using the interface component, lower and shift the second signal according to the potential difference, and send the lower and shifted second signal to the information processing submodule.

[0107] The second signal can be any logic level signal determined by taking the negative output terminal of the adjacent circuit module, i.e. the next circuit module, as the reference ground. When it is sent to the circuit module 100, since the potential of the negative output terminal 160 of the circuit module 100 is used as the reference ground, the above-mentioned reduction shift can meet the signal reception and information processing requirements of the circuit module 100.

[0108] The potential difference mentioned above can also be understood as the voltage output by the power output submodule 110 using the positive output terminal 150 and the negative output terminal 160 , that is, the output voltage of the circuit module 100 .

[0109] It can be seen that since the negative output end of the circuit module is connected in series with the positive output end of the adjacent circuit module, the reference ground it generates is the potential of the positive output end of the adjacent circuit module of the previous level, and each circuit module is floating. When sending and receiving signals and processing information, each circuit module uses the potential of its own negative output end as the reference ground. Furthermore, the present invention can make the serially transmitted signal more convenient to meet the needs of communication and information processing by performing boost shift before sending the signal and reducing the shift before processing the information after receiving the signal.

[0110] Figure 2 It is a circuit principle schematic diagram of a circuit module with communication function in another embodiment of the present invention.

[0111] In one implementation, please refer to Figure 2 The interface component 140 includes a receiving interface 142 and a sending interface 141, and the communication processing submodule 120 includes a level-up shifter 121 and a level-down shifter 122; one end of the level-up shifter 121 is directly or indirectly connected to the sending interface 141, and one end of the level-down shifter 122 is directly or indirectly connected to the receiving interface 142, and the level-up shifter 121 and the level-down shifter 122 are configured so that their shift amplitudes are associated with the potential difference; the other end of the level-down shifter 122 and the other end of the level-up shifter 121 are both directly or indirectly connected to the information processing submodule 130.

[0112] Among them, the shift amplitude is associated with the potential difference, which may include the case where the shift amplitude is the potential difference, and may also include the case where other processing is performed based on the potential difference. For example, the shift amplitude can also be determined in combination with other signals, information, and electrical parameters. As long as the shift amplitude is associated with the potential difference, it can be beneficial for determining the logic level based on the potential of the negative output terminal of the corresponding circuit module as a reference ground during information processing, without departing from the description of this embodiment.

[0113] It can be seen that this embodiment uses the transmission interface 141 and the level-up shifter 121 to form a transmission path for sending signals to the next-stage adjacent circuit module, and uses the reception interface 142 and the level-down shifter 122 to form a reception path for receiving signals to the previous-stage adjacent circuit module.

[0114] The level-up shifter 121 and the level-down shifter 122 may adopt any circuit structure that can realize logic level shifting.

[0115] Figure 3 It is a circuit principle schematic diagram of a circuit module with communication function in another embodiment of the present invention.

[0116] Please refer to Figure 3The level-up shifter 121 and the level-down shifter 122 are also connected to a power level providing circuit, which may include a charge pump 123. For example, the power level providing circuit of the charge pump 123 is used to provide a high-voltage power level to the level-up shifter 121 and the level-down shifter 122, so that the level-up shifter 121 and the level-down shifter 122 perform level shifting according to the high-voltage power level.

[0117] The high voltage power level is determined according to the voltage of the power interface component 170 of the circuit module and the potential difference, for example, the sum of the voltage difference and the voltage of the power interface component, or for another example, the sum of the voltage difference and a reference voltage determined according to the voltage of the power interface component.

[0118] In order to facilitate the power level providing circuit of the charge pump 123 to learn the voltage of the power interface component 170, the charge pump 123 can be connected to the power interface component 170, or it can be indirectly connected to the power interface component 170. In order to facilitate the charge pump 123 to learn the potential difference, the charge pump 123 can also be directly or indirectly connected to the power output submodule 110, or it can be directly or indirectly connected to the positive output terminal 150 and the negative output terminal 160. In other optional implementations, the charge pump 123 can also input a preset voltage that matches the potential difference through a voltage source.

[0119] In order to accurately determine the shift amplitude of the logic level to ensure that the information processing requirement can be met after the shift, the shift configuration of the level-up shifter 121 and the level-down shifter 122 is specifically set as follows.

[0120] In one embodiment, the level boost shifter 121 is configured to shift the logic level of the first signal to a first interval according to the high voltage power supply level during boost shifting; the minimum value of the first interval is the potential difference, and the maximum value of the first interval is the sum of the potential difference and a reference voltage determined according to the voltage of the power interface component.

[0121] The level down shifter 122 is configured to shift the logic level of the first signal to a second interval according to the high voltage power supply level during down shifting; the minimum value of the second interval is 0 volts, and the maximum value of the second interval is the reference voltage.

[0122] The first interval and the second interval are characterized by taking the potential of the negative output terminal as a reference ground. That is:

[0123] The minimum value of the first interval referred to here is the potential difference, which refers to the potential difference between the potential of the minimum value and the negative output terminal 160 of the present circuit module 100, that is, the voltage, which is the potential difference between the positive output terminal 150 and the negative output terminal 160 of the present circuit module 100, that is, the output voltage of the present circuit module. This can facilitate information processing of adjacent circuit modules.

[0124] The maximum value of the first interval referred to here is the sum of the potential difference and the reference voltage determined according to the voltage of the power interface component, which refers to the potential difference between the potential of the maximum value and the negative output terminal 160 of the circuit module 100, which is the sum of the potential difference between the positive output terminal 150 and the negative output terminal 160 of the circuit module 100 and the reference voltage, that is, the sum of the output voltage and the reference voltage. It can facilitate information processing of adjacent circuit modules.

[0125] The minimum value of the second interval referred to here is 0V, which means that the potential of the minimum value is the same as the potential of the negative output terminal 160 of the circuit module 100. This can facilitate processing of information sent by adjacent circuit modules.

[0126] The maximum value of the second interval referred to here is the potential difference, which refers to the potential difference between the maximum value and the negative output terminal 160 of the circuit module 100, that is, the reference voltage. This can facilitate processing of information sent by adjacent circuit modules.

[0127] Figure 4 It is a circuit principle schematic diagram of a circuit module with communication function in another embodiment of the present invention.

[0128] Please refer to Figure 4 A buffer 180 may be provided between the transmitting interface 141 and the level-up shifter 121 , which may be understood as a high-end output buffer; a buffer 180 may also be provided between the receiving interface 142 and the level-down shifter 122 , which may be understood as a high-end input buffer.

[0129] The buffer 180 mentioned above may be any CMOS logic circuit buffer.

[0130] In summary, the circuit module with communication function provided in this embodiment can realize serial communication between various circuit modules, and further, it is not necessary to configure a communication controller for each circuit module, which effectively reduces the cost, simplifies the circuit, and is easy to maintain and arrange. At the same time, since the negative output end of the circuit module is connected in series with the positive output end of the adjacent circuit module, the reference ground generated by it is the potential of the positive output end of the adjacent circuit module of the previous level, that is, each circuit module is floating. When processing information, each circuit module uses the potential of its own negative output end as the reference ground for signal transmission and information processing. Furthermore, for the situation where the outputs of various circuit modules in the series circuit are connected in series but floating, the present invention can also make the serially transmitted signal more convenient to meet the needs of communication and information processing by increasing or decreasing the input and output signals.

[0131] In addition, since the present invention does not need to configure a controller for each circuit module, it can also avoid mutual interference between signals of multiple controllers, thereby ensuring the communication effect of the signals.

[0132] Figure 5 It is a schematic diagram of the circuit principle of a multi-module circuit device in one embodiment of the present invention.

[0133] Please refer to Figure 5 , a multi-module circuit device, comprising: at least two stages of circuit modules 200, except for the highest stage circuit module in the at least two stages of circuit modules, the positive output end of each stage of the circuit modules is connected to the negative output end of the next stage circuit module, and the at least two stages of circuit modules are used to output electric energy to a load 300. The circuit module 300 uses the potential of the negative output end as a reference ground.

[0134] Each of the circuit modules 200 can realize the series connection of the output voltage through the above connection, thereby increasing the overall output voltage, output power, etc. It can be seen that the circuit modules 200 involved in this embodiment can be understood as circuit modules that can output electrical energy, that is, circuit modules with communication capabilities, electrical energy output capabilities, and information processing capabilities.

[0135] The highest level circuit module may refer to a circuit module whose positive output terminal does not need to be connected to other circuit modules.

[0136] Except for the highest level circuit module, the high-side interface component 210 of each level of the circuit module 200 is connected to the low-side interface component 220 of the next level of the circuit module.

[0137] The high-side interface component 210 can be understood as an interface component of the circuit module 200 for communicating with its subsequent circuit module, and the potential of the negative output terminal of the subsequent circuit module is the potential of the positive output terminal of the circuit module.

[0138] The low-end side interface component 220 can be understood as an interface component of the circuit module 200 for communicating with the previous stage circuit module, and the potential of the positive output terminal of the previous stage circuit module is the potential of the negative output terminal of the circuit module.

[0139] The high-side interface component 210 and the low-side interface component 220 enable communication between adjacent circuit modules. For example, the first circuit module and the second circuit module can communicate through the high-side interface component 210 of the first circuit module and the low-side interface component 220 of the second circuit module, which can be direct communication, and indirect communication is not excluded. By analogy, the sequential connection and communication of multi-level circuit modules can be realized.

[0140] The interface components involved above are not limited to connection with circuit modules. For example, a circuit module connected to a controller can communicate with the controller through its low-end interface component 220. It can be direct communication, and indirect communication is not excluded.

[0141] Based on the above communication method, it will cause a mismatch in logic levels. The following is an example of the first circuit module and the second circuit module connected thereto:

[0142] The low-end interface component of the first circuit module shares the same ground with the circuit module, which is also the reference ground for information processing. Therefore, the logic level range of information processing can be characterized as: 0~V IN1 . Among them, V IN1 Can be the voltage of the power supply of the first circuit module.

[0143] The positive output terminal of the first circuit module is connected to the negative output terminal of the second circuit module, that is, the ground terminal. Therefore, the low-end interface component of the second circuit module shares the ground with the circuit module, which is also the reference ground for information processing. Therefore, the logic level range of information processing can be represented as: V OUT1 ~V OUT1 +V IN2 ; V OUT1 can be the output voltage of the first circuit module, that is, the potential difference between its positive output terminal and negative output terminal, V IN2 Can be the voltage of the power supply of the second circuit module.

[0144] It can be seen that the high-side interface component of the first circuit module is directly connected to the low-side interface component of the second circuit module and must meet the logic level range requirements, namely: V OUT1 ~V OUT1 +V IN2 .

[0145] Therefore, the low-end and high-end signals of each module must be level-shifted if communication between the front and back stages is to be achieved.

[0146] In addition to the highest level circuit module, each of the circuit modules 200 is also used for:

[0147] When a first low-end signal to be sent to the next-stage circuit module is generated after information processing, the first low-end signal is boosted and shifted according to the potential difference between the positive output terminal 230 and the negative output terminal 240 of the circuit module 200 to obtain a first high-end signal, and the first high-end signal is sent to the next-stage circuit module using its high-end side interface component 210.

[0148] The first low-end signal may be generated after the circuit module processes the low-end signal to be processed received by the low-end interface component. The low-end signal to be processed may be sent by other circuit modules or a controller.

[0149] Each of the circuit modules 200 is also used for: when the high-end side interface component 210 of the circuit module 200 receives a second high-end signal that requires information processing, the second high-end signal is lowered and shifted according to the potential difference to obtain a lowered low-end signal, and then information processing is performed on the lowered low-end signal.

[0150] The first low-end signal mentioned above may also be generated after the circuit module performs information processing on the reduced low-end signal.

[0151] The second high-end signal may be sent by other circuit modules. Meanwhile, this embodiment does not exclude that the second high-end signal is sent by other components, such as a host computer, a sensor device, a controller, and the like.

[0152] It can be seen that the above optional implementations may involve the following transmission paths:

[0153] In the first method, the low-end side interface component receives the low-end signal to be processed, the circuit module processes the low-end signal to be processed to obtain a first low-end signal, and then performs lifting and shifting on the first low-end signal to obtain a first high-end signal, and then uses the high-end side interface component to send the first high-end signal to the next-stage circuit module;

[0154] In the second type, the high-end side interface component receives the second high-end signal, the circuit module lowers and shifts the second high-end signal to obtain a lowered low-end signal, and the first low-end signal can be obtained after information processing on the lowered low-end signal. Then, referring to the first transmission path, the first low-end signal is raised and shifted to obtain the first high-end signal, and the first high-end signal is sent to the next-level circuit module using the high-end side interface component.

[0155] In one embodiment, except for the lowest level circuit module, each of the circuit modules is further used for:

[0156] When a second low-end signal to be sent to a previous stage circuit module is generated after information processing, the second low-end signal is sent to the previous stage circuit module by using its low-end side interface component.

[0157] The second low-end signal may be generated after the circuit module processes the low-end signal to be processed received by the low-end interface component, or may be generated after the circuit module processes the reduced low-end signal.

[0158] It can be seen that the above optional implementations may further involve the following transmission paths:

[0159] The third method is that the low-end side interface component receives the low-end signal to be processed, the circuit module processes the low-end signal to be processed, obtains a second low-end signal, and then uses the low-end side interface component to send the second low-end signal to the previous circuit module;

[0160] Fourthly, the high-end side interface component receives the second high-end signal, the circuit module lowers and shifts the second high-end signal to obtain a lowered low-end signal, and after information processing on the lowered low-end signal, a second low-end signal can be obtained, and then the low-end side interface component is used to send the second low-end signal to the previous circuit module.

[0161] In addition, the first low-end signal and the second low-end signal may also be generated by the circuit module autonomously through information processing, for example, automatically generated according to the connected detection component, etc., rather than being generated based on the received signal.

[0162] The number of the circuit modules involved above may be at least two. Furthermore, the circuit module may only have the function of lifting and shifting, or only have the function of lowering and shifting. In another embodiment, the circuit module may also have both the function of lifting and shifting and the function of lowering and shifting.

[0163] The circuit modules involved above can be Figures 1 to 4 An application scenario of the circuit module involved in the embodiment shown can satisfy a circuit device in which multiple circuit modules are connected in series. Therefore, Figures 1 to 4 The technical features, optional implementation methods, technical effects, etc. of the circuit module described in the illustrated embodiment can all be applied to this embodiment, so that the circuit device involved in this embodiment also has corresponding technical features, optional implementation methods and technical effects, etc.

[0164] Figure 6 It is a circuit principle schematic diagram of a multi-module circuit device in another embodiment of the present invention.

[0165] Please refer to Figure 6 , and combined with Figures 1 to 4 In the illustrated embodiment, the circuit module 200 includes an electric energy output submodule 250, a communication processing submodule 260 and an information processing submodule 270; the information processing submodule 270, the electric energy output submodule 250, the communication processing submodule 260, the high-end side interface component 210 and the low-end side interface component 220 can all use the potential of the negative output terminal 240 of the circuit module 200 to which they belong as a reference ground.

[0166] The power output submodule 250 of each circuit module 200 is connected in series with the power output submodules of other circuit modules through its positive output terminal 230 and / or negative output terminal 240. The connection mode and working principle of the power output submodule 250 can be any circuit part that can generate power. For example, it can be a photovoltaic module, or connected to a photovoltaic module.

[0167] The communication processing submodule 260 is directly or indirectly connected to the information processing submodule 270 , the information processing submodule 270 is directly or indirectly connected to the low-end interface component 220 , and the communication processing submodule 260 is directly or indirectly connected to the high-end interface component 210 .

[0168] The information processing submodule 270 may be any processing circuit for processing information, and it may also be connected to other components, devices, apparatuses, equipment, etc., and then, it may control and process these components, devices, apparatuses, equipment, etc., or process information sent by these components, devices, apparatuses, equipment, etc. At the same time, the information processing process may also be adapted to the needs of serial communication, for example, it may process information carried by the signal based on the communication protocol, or process the signal itself.

[0169] It can be seen that the function of the information processing submodule 270, that is, the information processing involved in the context of this embodiment, can be any processing based on the purpose of control and information transmission, which are listed below, but it should be considered that the content of the information processing is not limited to the following:

[0170] Communication control protocols and processing information;

[0171] Signal reception and signal analysis;

[0172] Obtain control instructions based on the analyzed signal and control the state of the control chip itself;

[0173] Obtain control information from the control chip itself, and then communicate it after information processing such as format conversion;

[0174] The control chip itself generates any information that needs to be transmitted through communication;

[0175] The information to be transmitted is processed according to the communication protocol standard to generate the signal to be transmitted and communicated;

[0176] Transmission, analysis and processing of address code information and positioning code information;

[0177] In addition, when the only function is to transmit information, the information processing submodule can also be used to complete information forwarding, format conversion, etc.

[0178] The control chip mentioned above can be understood as part or all of the circuit module.

[0179] It can be seen that no matter what the purpose of processing the information is, it does not deviate from the functional description of the information processing submodule 270.

[0180] In addition, the creative contribution of this embodiment does not lie in how to perform information processing, but in the communication processing of signals before and after information processing. Therefore, this embodiment does not need to describe the process of information processing. At the same time, those skilled in the art can generate any information processing method based on the application scenario of the circuit module and the characteristics of serial communication, that is, even if the information processing is not described in detail, it will not cause the solution involved in this embodiment to be unable to be implemented.

[0181] In other words, the various information processing listed above can also be implemented based on the common knowledge and conventional technical means in the art. For example, the information processing process in other scenarios can be applied to the scenario involved in this embodiment, and the application process may not generate obstacles that require creative work to overcome. At the same time, the optional solutions of this embodiment do not exclude solutions that are generated through creative work on this basis.

[0182] Except for the highest level circuit module, the communication processing submodule 260 of each level circuit module is used for:

[0183] When the information processing submodule 270 generates the first low-end signal through information processing, the first low-end signal is lifted and shifted according to the potential difference to obtain the first high-end signal, and the first high-end signal is sent to the subsequent circuit module by using the high-end side interface component 210, and / or:

[0184] When the high-end side interface component 210 receives the second high-end signal, the second high-end signal is lowered and shifted according to the potential difference to obtain the lowered low-end signal, and the lowered low-end signal is sent to the information processing sub-module 270, so that the information processing sub-module 270 performs information processing on the low-end signal to be processed.

[0185] In one embodiment, the first low-end signal is generated after the information processing submodule 270 performs information processing on the low-end signal to be processed received by the low-end side interface component 220, or: the first low-end signal is generated after the information processing submodule 270 performs information processing on the reduced low-end signal.

[0186] In one embodiment, in addition to the lowest level circuit module, the information processing submodule 270 of each circuit module is also used for:

[0187] When a second low-end signal to be sent to a previous-stage circuit module is generated through information processing, the second low-end signal is sent to the previous-stage circuit module using its low-end side interface component 220 .

[0188] In one embodiment, the second low-end signal is generated after the information processing submodule 270 performs information processing on the low-end signal to be processed received by the low-end side interface component 220, or: the second low-end signal is generated after the information processing submodule performs information processing on the reduced low-end signal.

[0189] In one implementation manner, the high-end side interface component 210 includes a high-end side receiving interface 212 and a high-end side transmitting interface 211 , and the low-end side interface component 220 includes a low-end side receiving interface 221 and a low-end side transmitting interface 222 .

[0190] The communication processing submodule 260 includes a level-up shifter 261 and a level-down shifter 262; one end of the level-up shifter 261 is directly or indirectly connected to the high-side sending interface 211, and the other end is directly or indirectly connected to the information processing submodule 270; one end of the level-down shifter 262 is directly or indirectly connected to the high-side receiving interface 212, and the other end is directly or indirectly connected to the information processing submodule 270; the information processing submodule 270 is also connected to the low-end receiving interface 221 and the low-end sending interface 222; the level-up shifter 261 and the level-down shifter 262 are configured so that their shift amplitudes are associated with the potential difference.

[0191] For the above-mentioned related information, please refer to Figures 1 to 4 The relevant descriptions in the illustrated embodiments are understood.

[0192] Figure 7 is a circuit principle schematic diagram of a multi-module circuit device in another embodiment of the present invention; Figure 8 yes Figure 7 Schematic diagram of the circuit principle of the circuit module in the device shown.

[0193] Please refer to Figure 7 and Figure 8 The communication processing submodule 260 also includes a power level providing circuit, which can be specifically a charge pump 263, which can also be understood as a boost circuit to generate a high-voltage power level by boosting. The level-up shifter 261 and the level-down shifter 262 are both connected to, for example, a power level providing circuit of the charge pump 263. For example, the power level providing circuit of the charge pump 263 is used to provide a high-voltage power level to the level-up shifter 261 and the level-down shifter 262. The high-voltage power level is determined based on the voltage of the power interface component 280 of the circuit module 200 and the potential difference, which refers to the potential difference between the positive output terminal 230 and the negative output terminal 240 of the circuit module 200, that is, the output voltage of the circuit module 200.

[0194] The level boost shifter 261 is configured to shift the logic level of the first low-end signal to a first interval during boost shifting; the minimum value of the first interval is the potential difference, and the maximum value of the first interval is the sum of the potential difference and a reference voltage determined according to the voltage of the power interface component.

[0195] The level down-shifter 262 is configured to shift the logic level of the second high-end signal to a second interval during down-shifting; a minimum value of the second interval is 0V, and a maximum value of the second interval is the reference voltage.

[0196] The first interval and the second interval are characterized by using the potential of the negative output terminal of the circuit module to which they belong as a reference ground.

[0197] The reference voltage may be the voltage of the power interface component itself, or may be obtained by processing the voltage of the power interface component. For example, if V IN Characterizes the voltage of the power interface component, then, V IN When the CMOS voltage is higher than the normal 5V, the voltage V IN The voltage is reduced to 5V or 3.3V inside the chip, thereby meeting the working requirements of the low-voltage CMOS circuit and reducing the chip area. That is, the reference voltage can be the voltage determined after the voltage of the power interface component is reduced.

[0198] The 5V power supply itself, or after it is stepped down to 3.3V, can support the operation of low-end interface components and related circuits. After it is boosted and shifted, V OUT +3.3V or V OUT The +5V power supply can support the operation of high-side interface components and related circuits.

[0199] Among them, you can refer to Figures 1 to 4The description of the charge pump, the first interval and the second interval in the illustrated embodiment is understood.

[0200] In addition, the charge pump can be connected to the power interface component 280 , and the positive terminal 281 and the negative terminal 282 of the power interface component 280 can be connected to two ends of the power source 400 .

[0201] Fig. 9 It is a schematic diagram of the principle of lifting and shifting in one embodiment of the present invention; Fig.10 It is a schematic diagram of the principle of reducing displacement in one embodiment of the present invention.

[0202] Please refer to Fig. 9 and Fig.10 , where V out It can be understood as the output voltage of the circuit module, that is, the potential difference between the positive output terminal and the negative output terminal, where V in It can be understood as the voltage of the power supply of the circuit module, that is, the voltage of the power interface component 280 connected to the power supply 400.

[0203] When lifting and shifting, [0, V in ], the logic level of the second interval is raised and shifted to [V out , V out +V in ], and vice versa, when shifting down, the logic level of [V out , V out +V in ], the logic level of the first interval is shifted down to [0, V in ]’s second interval’s logic level.

[0204] It can be seen that through the above processing, the conversion matching of the power supply and logic level between adjacent series modules can be met. After the conversion matching, floating serial communication can be realized.

[0205] Please refer to Figure 7 and Figure 8 , wherein the negative output terminal 240 of the first circuit module can be connected to the ground, that is, the potential of this terminal is the same as the ground.

[0206] In one embodiment, a buffer 290 is provided between the information processing submodule 270 and the low-end receiving interface 221, between the information processing submodule 270 and the low-end sending interface 222, between the level reduction shifter 262 and the high-end receiving interface 212, and between the level increase shifter 261 and the high-end sending interface 211.

[0207] Fig.11 is a schematic diagram of the connection between a multi-module circuit device and a controller in one embodiment of the present invention; Fig.12It is a connection diagram of a multi-module circuit device and a controller in another embodiment of the present invention.

[0208] Please refer to Fig.11 and Fig.12 The device also includes a controller 500, a communication interface of which is connected to a low-end interface component 220 of any one of the circuit modules 200; the first low-end signal and / or the second high-end signal is directly or indirectly determined based on a control signal sent by the communication interface of the controller.

[0209] In one implementation, please refer to Fig.11 The controller 500 is connected to the low-end side interface component 220 of the first circuit module. Furthermore, for the first circuit module, the first low-end signal received by the low-end side interface component 220 is sent by the controller 500 .

[0210] In another embodiment, please refer to Fig.12 The controller 500 may also be connected to the low-end side interface component 220 of any circuit module other than the first circuit module. In addition, the controller 500 may also be connected to the high-end side interface component 210 of any circuit module.

[0211] The controller mentioned above may refer to a device or equipment specifically used for control, or may refer to other terminals or equipment that can also be used for control. The controller may also be powered by its corresponding communication power supply.

[0212] It can be seen that all circuit modules in the series circuit can be configured with only one controller and a corresponding communication power supply, which can effectively save hardware costs compared to the existing technology.

[0213] During the specific implementation, based on the information processing contents listed above, the information processing contents performed by the information processing submodule 270 can be further refined and listed as: including at least one of the following: address / location information, data information, response / handshake signal, check code, etc.

[0214] The positioning information involved above can be, for example, a positioning code. If the information processing content performed by the information processing submodule 270 includes the positioning code, then: the information processing submodule 270 can be specifically used to receive a signal carrying the positioning code from the low-end interface component 220 and parse and determine the positioning code therein, and then know that the positioning code of the current circuit module is the parsed positioning code, and then accumulate it once, and send the signal carrying the accumulated positioning code to the next circuit module through the level boosting shifter 261 and the high-end interface component 210, and it can also accumulate it after determining its own positioning code, and then transmit it to the circuit module in the future. The transmission communication process is realized by the communication processing method involved in this embodiment.

[0215] Similarly, the information processing submodule 270 can also be used to receive the signal carrying the positioning code from the high-end interface component 210, reduce the level of the signal and parse and determine the positioning code therein, and then know that the positioning code of the current circuit module is the parsed positioning code, and then perform a cumulative subtraction on it, and send the signal carrying the subtracted positioning code to the previous circuit module through the low-end interface component 220, and it can also perform a cumulative subtraction on it after determining its own positioning code, and then transmit it to the circuit module in the future. The transmission communication process is realized by the communication processing method involved in this embodiment.

[0216] For example, if the low-end interface component 220 of the first circuit module is connected to the controller, and the initial setting value of the positioning code is Add+0, then:

[0217] When the controller 500 communicates with the first circuit module, it sends a positioning code. After the first circuit module parses the positioning code, it can be known that the current positioning code of the first circuit module is Add+0. After the processing is completed, the positioning codes are accumulated, that is, accumulated to Add+1, and continue to be transmitted to the next circuit module, that is, the second circuit module. After the second circuit module receives and parses the positioning code, it can be known that the current positioning code of the second circuit module is Add+1. After the processing is completed, the positioning codes are accumulated, that is, accumulated to Add+2, and continue to be transmitted to the next circuit module, that is, the third circuit module. And so on, positioning can be performed on more upper-level modules.

[0218] For another example, if the circuit module connected to the controller 500 is a circuit module other than the first circuit module, such as the third circuit module, and the initial value of the positioning code is set to Add+0, then:

[0219] When the controller 500 communicates with the third circuit module, it sends a positioning code. After the third circuit module analyzes the positioning code, it can know that the current positioning code of the third circuit module is Add+0. After the processing is completed, the positioning code is accumulated, that is, accumulated to Add+1, and then transmitted to the fourth circuit module. After the fourth circuit module receives and analyzes the positioning code, it can know that the current positioning code of the fourth circuit module is Add+1. After the processing is completed, the positioning code is accumulated, that is, accumulated to Add+2, and then transmitted to the next fifth circuit module. And so on, positioning can be performed on more upper-level circuit modules.

[0220] Similarly, the positioning code can also be transmitted downward through the lower-level modules, and the positioning code is decremented. For example, if the positioning code of the third circuit module is determined to be Add+0, the positioning code of the second circuit module can be determined to be Add-1, and the positioning code of the first circuit module is Add-2. And so on, positioning can be performed on more lower-level modules.

[0221] By analogy, any level module in the series circuit can be positioned by accumulating and transmitting the positioning code.

[0222] Therefore, this embodiment can perform fixed-point control on any circuit module in the series circuit without the need for additional hardware configuration of the circuit module itself, further saving costs. At the same time, the controller can be connected from any circuit module in the series circuit, making it very flexible to use.

[0223] In addition, this embodiment and its optional solutions have no restrictions on the communication protocol itself, and support all single-line, two-line or multi-line communication protocols. Moreover, this embodiment and its optional solutions can generate very little hardware cost investment and maintenance cost, thereby facilitating the realization of Internet of Things level control requirements.

[0224] The application scope of the serial communication involved in this embodiment may include but is not limited to the following:

[0225] Communications in all series circuit application areas, including signal transmission, reception and control.

[0226] Realize fixed-point, timing, real-time control, monitoring and signal acquisition of series modules.

[0227] Combined with the communication between the controller and the network terminal, intelligent communication, management and control of the series modules can be realized.

[0228] This embodiment further provides a photovoltaic system, including a multi-module circuit device involved in the above optional solution, wherein the circuit module is a photovoltaic component or is connected to the photovoltaic component accordingly.

[0229] In summary, the circuit module with communication function, the multi-module circuit device and the photovoltaic system provided in this embodiment can realize serial communication between each circuit module, and further, it is not necessary to configure a communication controller for each circuit module, which effectively reduces the cost, simplifies the circuit, and is easy to maintain and arrange. At the same time, since the negative output end of the circuit module is connected in series with the positive output end of the adjacent circuit module, the reference ground generated by it is the potential of the positive output end of the adjacent circuit module of the previous level, that is, each circuit module is floating, and when processing information, each circuit module uses the potential of its own negative output end as the reference ground for information processing. Furthermore, the present invention can make the serial transmission signal more convenient to meet the needs of communication and information processing by performing a boost shift before sending a signal, and reducing the shift before performing information processing after receiving the signal.

[0230] In addition, since this embodiment does not need to configure a controller for each circuit module, it can also avoid mutual interference between signals of multiple controllers, thereby ensuring the communication effect of signals.

[0231] In the optional implementation manner of this embodiment, based on the serial communication method, the positioning of each circuit module can be easily achieved. At the same time, the controller can be connected to any circuit module, which has better flexibility.

[0232] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circuit module with communication function, comprising an electric energy output submodule, a communication processing submodule and an information processing submodule, wherein the electric energy output submodule is connected in series with other circuit modules via a positive output terminal and a negative output terminal, and the communication processing submodule is connected to the information processing submodule; the interface components of the information processing submodule, the communication processing submodule and the circuit module all use the potential of the negative output terminal as a reference ground; characterized in that: The communication processing submodule communicates with the adjacent circuit module of the next stage connected in series through the interface component. The communication processing submodule is used to, before using the interface component to send a first signal to the adjacent circuit module, perform a boost shift on the first signal according to the potential difference between the positive output terminal and the negative output terminal, and: after receiving a second signal from the adjacent circuit module using the interface component, perform a lower shift on the second signal according to the potential difference, and send the lowered and shifted second signal to the information processing submodule.

2. The module according to claim 1, characterized in that The interface component includes a receiving interface and a sending interface, and the communication processing submodule includes a level-up shifter and a level-down shifter; one end of the level-up shifter is directly or indirectly connected to the sending interface, and one end of the level-down shifter is directly or indirectly connected to the receiving interface, and the level-up shifter and the level-down shifter are configured so that their shift amplitudes are associated with the potential difference; the other end of the level-down shifter and the other end of the level-up shifter are both directly or indirectly connected to the information processing submodule.

3. The module according to claim 2, characterized in that The level-up shifter and the level-down shifter are also each connected to a power level providing circuit, and the level providing circuit is used to provide a high-voltage power level to the level-up shifter and the level-down shifter, so that the level-up shifter and the level-down shifter perform level shifting according to the high-voltage power level, and the high-voltage power level is determined based on the voltage of the power interface component of the circuit module and the potential difference.

4. The module according to claim 3, characterized in that The level boost shifter is configured to shift the logic level of the first signal to a first interval according to the high voltage power level during boost shifting; a minimum value of the first interval is the potential difference, and a maximum value of the first interval is a sum of the potential difference and a reference voltage determined according to the voltage of the power interface component; The level down shifter is configured to shift the logic level of the first signal to a second interval according to the high voltage power supply level during down shifting; the minimum value of the second interval is 0 volts, and the maximum value of the second interval is the reference voltage; The first interval and the second interval are characterized by taking the potential of the negative output terminal as a reference ground.

5. A multi-module circuit device, comprising: At least two stages of circuit modules, except for the highest stage of the at least two stages of circuit modules, the positive output end of each stage of the circuit modules is connected to the negative output end of the subsequent stage of the circuit module, and the at least two stages of circuit modules are used to output electric energy to the load; the circuit module uses the potential of the negative output end as a reference ground, It is characterized in that Wherein, except for the highest level circuit module, the high-side interface components of each level of the circuit module are connected to the low-side interface components of the subsequent level of the circuit module; In addition to the highest level circuit module, each of the circuit modules is further configured to: When a first low-end signal to be sent to a subsequent circuit module is generated after information processing, the first low-end signal is lifted and shifted according to the potential difference between the positive output terminal and the negative output terminal of the circuit module to obtain a first high-end signal, and the first high-end signal is sent to the subsequent circuit module using its high-end side interface component, and / or: When the high-side interface component of the circuit module receives a second high-end signal that needs information processing, the second high-end signal is lowered and shifted according to the potential difference to obtain a lowered low-end signal, and then information processing is performed on the lowered low-end signal.

6. The device according to claim 5, characterized in that The first low-end signal is generated after the circuit module performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the first low-end signal is generated after the circuit module performs information processing on the reduced low-end signal.

7. The device according to claim 5, characterized in that Except for the lowest level circuit module, each of the circuit modules is also used for: When a second low-end signal to be sent to a previous stage circuit module is generated after information processing, the second low-end signal is sent to the previous stage circuit module by using its low-end side interface component.

8. The device according to claim 7, characterized in that The second low-end signal is generated after the circuit module performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the second low-end signal is generated after the circuit module performs information processing on the reduced low-end signal.

9. The device according to claim 5, characterized in that The circuit module includes an electric energy output submodule, a communication processing submodule and an information processing submodule; the information processing submodule, the electric energy output submodule, the communication processing submodule, the high-side interface component and the low-side interface component all use the potential of the negative output terminal of the circuit module to which they belong as a reference ground; The power output submodule of each circuit module is connected in series with the power output submodules of other circuit modules through its positive output terminal and / or negative output terminal; The communication processing submodule is directly or indirectly connected to the information processing submodule, the information processing submodule is directly or indirectly connected to the low-end interface component, and the communication processing submodule is directly or indirectly connected to the high-end interface component; In addition to the highest level circuit module, the communication processing submodule of each level circuit module is used for: When the information processing submodule generates the first low-end signal through information processing, the first low-end signal is lifted and shifted according to the potential difference to obtain the first high-end signal, and the first high-end signal is sent to the subsequent circuit module by using the high-end side interface component; and / or: After the high-side interface component receives the second high-end signal, the second high-end signal is lowered and shifted according to the potential difference to obtain the lowered low-end signal, and the lowered low-end signal is sent to the information processing sub-module so that the information processing sub-module performs information processing on the lowered low-end signal.

10. The device according to claim 9, characterized in that The first low-end signal is generated after the information processing submodule performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the first low-end signal is generated after the information processing submodule performs information processing on the reduced low-end signal.

11. The device according to claim 10, characterized in that Except for the lowest level circuit module in the at least two levels of circuit modules, the information processing submodule of each circuit module is further used for: When a second low-end signal to be sent to a previous-stage circuit module is generated through information processing, the second low-end signal is sent to the previous-stage circuit module using its low-end side interface component.

12. The device according to claim 11, characterized in that The second low-end signal is generated after the information processing submodule performs information processing on the low-end signal to be processed received by the low-end side interface component, or: the second low-end signal is generated after the information processing submodule performs information processing on the reduced low-end signal.

13. The device according to any one of claims 9 to 12, characterized in that The high-end side interface component includes a high-end side receiving interface and a high-end side sending interface, the low-end side interface component includes a low-end side receiving interface and a low-end side sending interface, and the communication processing sub-module includes a level-up shifter and a level-down shifter; one end of the level-up shifter is directly or indirectly connected to the high-end side sending interface, and the other end is directly or indirectly connected to the information processing sub-module, one end of the level-down shifter is directly or indirectly connected to the high-end side receiving interface, and the other end is directly or indirectly connected to the information processing sub-module, the information processing sub-module is also connected to the low-end side receiving interface and the low-end side sending interface, and the level-up shifter and the level-down shifter are configured so that their shift amplitudes are associated with the potential difference.

14. The device according to claim 13, characterized in that The communication processing submodule further includes a power level providing circuit, the level-up shifter and the level-down shifter are both connected to the level providing circuit, the level providing circuit is used to provide a high-voltage power level to the level-up shifter and the level-down shifter, and the high-voltage power level is determined according to the voltage of the power interface component of the circuit module and the potential difference; The level boost shifter is configured to shift the logic level of the first low-end signal to a first interval during boost shifting; the minimum value of the first interval is the potential difference, and the maximum value of the first interval is the sum of the potential difference and a reference voltage determined according to the voltage of the power interface component; The level down shifter is configured to shift the logic level of the second high-end signal to a second interval when down shifting; the minimum value of the second interval is 0 volts, and the maximum value of the second interval is the reference voltage; The first interval and the second interval are characterized by using the potential of the negative output terminal of the circuit module to which they belong as a reference ground.

15. The device according to any one of claims 5 to 12, characterized in that It also includes a controller, a communication interface of which is connected to the low-end interface component of any one of the circuit modules; the first low-end signal and / or the second high-end signal is directly or indirectly determined based on the control signal sent by the communication interface of the controller.

16. A photovoltaic system, characterized in that: A multi-module circuit device comprising any one of claims 5 to 15, wherein the circuit modules are photovoltaic modules or are connected to the photovoltaic modules accordingly.

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