CN220210017U - Communication control circuit and communication control system based on power transmission - Google Patents

Abstract

The present disclosure provides a communication control circuit and communication control system based on power transmission, relates to the power equipment field, and the circuit of the present disclosure includes: the power switch unit, the controller, the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit; the power switch unit is used for accessing the power line and is connected with the controller, and the opening and closing of the power switch unit is controlled by the controller; the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are respectively connected with the controller at the first ends, and the second ends are respectively connected with the power line and used for transmitting serial signals in a signal transmission mode and transmitting electric power in a power transmission mode. The present disclosure enables circuitry for power transmission to implement communication signal transmission functions without increasing the number of cables and additional modulation/demodulation circuits by modifying communication control circuits of a receiving end and a transmitting end.

Description

Communication control circuit and communication control system based on power transmission

Technical Field

The disclosure relates to the field of power equipment, and in particular relates to a communication control circuit and a communication control system based on power transmission.

Background

In an electrical power system, a charging device is a common electrical device that can transfer power to other electrical devices to charge the device. However, in order to realize intelligent control, at present, when power is transmitted, communication signals are usually required to be transmitted between circuit systems or circuit units inside the charging equipment. Therefore, how to better enable the charging device to conveniently transmit the communication signal while having the transmission power function is a problem to be solved at present.

Disclosure of Invention

The present disclosure provides a communication control circuit and a communication control system based on power transmission, so as to solve the problems in the related art, and make the power transmission circuit conveniently implement the capability of transmitting communication signals without increasing the number of cables and additional modulation/demodulation circuits.

An embodiment of a first aspect of the present disclosure provides a communication control circuit based on power transmission, which is applied to a power transmitting end, and includes: the power switch unit, the controller, the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit; the power switch unit is used for accessing the power line and is connected with the controller, the opening and closing of the power switch unit are controlled by the controller, when the power switch unit is in an on state, the communication control circuit is in a power transmission mode, and when the power switch unit is in an off state, the communication control circuit is in a signal transmission mode; the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are respectively connected with the controller, the second end is respectively used for being connected with the power line, and the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are used for transmitting serial signals in a signal transmission mode and transmitting electric power in a power transmission mode.

In some embodiments of the present disclosure, a power switching unit includes: a power conduction module and a controlled signal module; the power conduction module comprises a first transistor and a first resistor, wherein a first end of the first transistor is used for receiving circuit power input, a second end of the first transistor is used for being connected with a power line, a control end of the first transistor is connected with the controlled signal module, one end of the first resistor is connected with the control end of the first transistor, and the other end of the first resistor is connected with the first end of the first transistor; the controlled signal module comprises a second transistor, wherein the control end of the second transistor is used for receiving the controller signal, the first end of the second transistor is connected with the power conduction module, and the second end of the second transistor is grounded.

In some embodiments of the present disclosure, the power conduction module further includes a second resistor, wherein one end of the second resistor is connected to the control terminal of the first transistor and the other end thereof is connected to the first end of the second transistor; and/or, the controlled signal module further comprises a third resistor and a fourth resistor, wherein one end of the third resistor is connected with the output end of the controller, the other end of the third resistor is connected with the control end of the second transistor, and one end of the fourth resistor is connected with the control end of the second transistor, and the other end of the fourth resistor is connected with the second end of the second transistor.

In some embodiments of the present disclosure, a power transmitting-end serial signal output unit includes: the device comprises a signal input module, a signal inversion module and a voltage bias module; the signal input module comprises a third transistor, wherein the control end of the third transistor is used for receiving a serial signal output by the controller, the first end of the third transistor is connected with the signal inverting module and the voltage biasing module, and the second end of the third transistor is grounded; the signal inversion module comprises a fourth transistor, wherein the control end of the fourth transistor is connected with the signal input module and the voltage bias module, the first end of the fourth transistor is connected with the power line and the voltage bias module, and the second end of the fourth transistor is grounded; the voltage bias module comprises a fifth resistor, wherein one end of the fifth resistor is used for voltage input of the controller, and the other end of the fifth resistor is connected with the signal inversion module.

In some embodiments of the present disclosure, the power transmitting-end serial signal output unit further includes an acceleration module, where the acceleration module includes a fifth transistor, one end of the acceleration module is connected to the signal input module and the other end thereof is connected to the signal inversion module and the voltage bias module; and/or, the signal input module further comprises a sixth resistor, wherein one end of the sixth resistor is connected with the control end of the third transistor, and the other end of the sixth resistor is used for receiving the input signal of the controller; and/or, the signal inversion module further comprises a seventh resistor, wherein one end of the seventh resistor is connected with the power line, and the other end of the seventh resistor is connected with the first end of the fourth transistor; and/or the voltage bias module further comprises an eighth resistor, wherein one end of the eighth resistor is connected with the acceleration module and the signal input module, and the other end of the eighth resistor is connected with one end of the fifth resistor.

In some embodiments of the present disclosure, a power transmitting-end serial signal receiving unit includes: a clamping voltage division module; the clamping voltage division module comprises a sixth transistor and a seventh transistor, wherein one end of the sixth transistor is used for receiving voltage input of the controller, the other end of the sixth transistor is connected with one end of the controller, one end of the seventh transistor and a power line, and one end of the seventh transistor is grounded, and the other end of the seventh transistor is connected with one end of the controller, one end of the sixth transistor and the power line.

In some embodiments of the disclosure, the power transmitting-end serial signal receiving unit further includes a first voltage dividing module, wherein the first voltage dividing module includes a ninth resistor, one end of the first voltage dividing module is connected to the power line, and the other end of the first voltage dividing module is connected to the first clamping voltage dividing module and the controller.

An embodiment of a second aspect of the present disclosure provides a communication control circuit based on power transmission, which is applied to a power receiving end, and includes: a power receiving end serial signal transmitting unit and a power receiving end serial signal receiving unit; the power receiving end serial signal transmitting unit and the power receiving end serial signal receiving unit are used for transmitting serial signals in a signal transmission mode.

In some embodiments of the present disclosure, the power receiving end further includes: a power load, a controller; the power load is connected to the power line; the power receiving end serial signal transmitting unit and the first end of the power receiving end serial signal receiving unit are respectively connected with the controller, and the second end of the power receiving end serial signal transmitting unit and the second end of the power receiving end serial signal receiving unit are respectively connected with the power line.

In some embodiments of the present disclosure, a power receiving end serial signal transmitting unit includes: the signal input module and the signal inverting module; the signal input module comprises an eighth transistor and a tenth resistor, wherein the control end of the eighth transistor is connected with the first end of the signal inverting module, the first end of the eighth transistor is connected with the tenth resistor, the second end of the eighth transistor is grounded, one end of the tenth resistor is connected with a power line, and the other end of the tenth resistor is connected with the first end of the eighth transistor; the signal inversion module comprises a ninth transistor and an eleventh resistor, wherein the control end of the ninth transistor is used for being connected with the input port of the controller, the first end of the ninth transistor is used for being connected with the output voltage of the controller and is connected with the signal input module, and the second end of the ninth transistor is grounded.

In some embodiments of the present disclosure, the signal inversion module further includes a twelfth resistor, wherein one end of the twelfth resistor is connected to the control end of the ninth transistor and the other end thereof is used to access the controller output voltage.

In some embodiments of the present disclosure, a power-receiving-end serial signal receiving unit includes: a clamping voltage division module; the clamping voltage division module comprises a tenth transistor and an eleventh transistor, wherein one end of the tenth transistor is used for receiving voltage input of the controller, the other end of the tenth transistor is connected with one end of the controller, one end of the eleventh transistor and a power line, one end of the eleventh transistor is grounded, and the other end of the eleventh transistor is connected with one end of the controller, one end of the sixth transistor and the power line.

In some embodiments of the disclosure, the power receiving end serial signal receiving unit further includes a first voltage dividing module, wherein the first voltage dividing module includes a twelfth resistor, one end of the first voltage dividing module is connected to the power line, and the other end of the first voltage dividing module is connected to the clamping voltage dividing module and the controller.

An embodiment of a third aspect of the present disclosure proposes a communication control system including: the communication control circuit applied to the power transmitting end in the embodiment of the first aspect of the disclosure, and the communication control circuit applied to the power receiving end in the embodiment of the second aspect of the disclosure.

In some embodiments of the present disclosure, a communication control circuit applied to a power transmitting end is connected to a communication control circuit applied to a power receiving end through a power line and a ground line.

In some embodiments of the present disclosure, the chip model corresponding to the controller in the communication control circuit is any one of the following: STM32F 103, STM32F104, AT32F403 of the Italian Semiconductor (ST).

The present disclosure provides a communication control circuit and a communication control system based on power transmission, including: the power switch unit, the controller, the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit; the power switch unit is used for accessing the power line and is connected with the controller, and the opening and closing of the power switch unit is controlled by the controller; the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are respectively connected with the controller at the first ends, and the second ends are respectively connected with the power line and used for transmitting serial signals in a signal transmission mode and transmitting electric power in a power transmission mode. The present disclosure enables circuitry for power transmission to implement communication signal transmission functions without increasing the number of cables and additional modulation/demodulation circuits by modifying communication control circuits of a receiving end and a transmitting end.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure and do not constitute an undue limitation of the disclosure.

Fig. 1 is a schematic structural diagram of a communication control circuit based on power transmission according to an embodiment of the disclosure;

fig. 2 is a schematic structural diagram of a power switch unit in a communication control circuit based on power transmission according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a power transmitting end serial signal output unit in a communication control circuit based on power transmission according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a power transmitting end serial signal receiving unit in a communication control circuit based on power transmission according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a power receiving end in a communication control circuit based on power transmission according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a power receiving end in another communication control circuit based on power transmission according to an embodiment of the disclosure;

Fig. 7 is a schematic structural diagram of a power receiving end serial signal transmitting unit in another communication control circuit based on power transmission according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a power transmitting end serial signal receiving unit in another communication control circuit based on power transmission according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a communication control circuit based on power transmission according to an embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

In an electrical power system, a charging device is a common electrical device that can transfer power to other electrical devices to charge the device. However, in order to realize intelligent control, at present, when power is transmitted, communication signals are usually required to be transmitted between circuit systems or circuit units inside the charging equipment. Therefore, how to better enable the charging device to conveniently transmit the communication signal while having the transmission power function is a problem to be solved at present.

In the related art, there are two main ways to realize power and communication transmission on the interconnection between two systems. The first approach requires the addition of electrical lines to the original circuitry, which requires three or more electrical lines, where two lines of the original circuitry are dedicated to power transmission and the remaining lines are dedicated to signal transmission alone. The method requires more wire harnesses than two wires, so that the cost and the product maintenance and assembly are inconvenient, and the method is not beneficial to upgrading the existing product only supporting power transmission. The second mode uses two electric lines of the original circuit system, but a modulation/demodulation circuit is needed to be added, the method is that a signal is modulated to a power line through frequency and amplitude at a signal transmitting end, a receiver demodulates the power line, and the needed signal is processed after demodulation. In this method, although the number of the wire harnesses is two, a modulation/demodulation circuit is necessary at both ends of the communication transmission and reception. The modulation/demodulation circuit is expensive in overall cost, requires more additional devices, not only increases the volume of products, but also increases the cost of circuit debugging and development, and is not suitable for being used in a scene which is sensitive to cost and needs to be communicated in a two-wire cable.

In order to solve the problems in the related art, the present disclosure enables a circuitry for power transmission to realize a communication signal transmission function without increasing the number of cables and additional modulation/demodulation circuits by modifying communication control circuits of a receiving end and a transmitting end.

The following describes an exemplary power transmission-based communication control circuit and a communication control system according to an embodiment of the present disclosure with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a communication control circuit structure based on power transmission according to an embodiment of the disclosure. The Power transmitting end and the Power receiving end in the communication control circuit can be connected through two electric wires (Power Line and group Line) between the existing circuit systems.

As shown in fig. 1, the communication control circuit is applied to a power transmitting end, and may include: the power switch unit, the controller, the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit.

In some alternative embodiments, at the power transmitting end, the power switch unit is used for accessing a power line and is connected with the controller, the opening and closing of the power switch unit is controlled by the controller, and when the power switch unit is in a conducting state, the communication control circuit is in a power transmission mode, for example, is used for transmitting charging power; when the power switch unit is in an off state, the communication control circuit is in a signal transmission mode, for example, for transmitting a serial signal.

The power switch unit outputs or does not output power voltage by receiving a signal of the controller, so that switching between a power transmission mode and a signal transmission mode is performed. For example, the first and second ends of the power switch unit are connected to a power line (power line), the third end is connected to a controller, and when the controller controls the power switch unit to be turned on, the first and second ends of the power switch unit conduct the power line, thereby performing power transmission; when the controller controls the power switch unit to be disconnected, the first end of the power switch unit is communicated with the third end, so that serial signal transmission is performed. The controller may be a general-purpose chip with GPIO (general purpose input/output) logic control and UART (universal asynchronous receiver transmitter) communication control, for example, but not limited to, STM32F 103, STM32F104, and AT32F403 of the yate force of the semiconductor, which are not limited in the embodiments of the present disclosure.

Specifically, a first end of the power transmitting end serial signal output unit is connected with the controller, and a second end is used for accessing a power line; similarly, the first end of the power transmitting end serial signal receiving unit is connected with the controller, and the second end is used for accessing the power line. The power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are used for transmitting serial signals in a signal transmission mode and transmitting electric power in a power transmission mode.

The Power Line is a Power Line of two Power lines (Power Line and group Line) between Power transmission circuit systems or circuit units, and the Power Line is mainly responsible for Power transmission. The power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are respectively interfaces of the power access side of the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit, and the second end is respectively an interface of the non-power access side of the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit.

In summary, the power transmission-based communication control circuit provided in the present disclosure includes: the power switch unit, the controller, the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit; the power switch unit is used for accessing the power line and is connected with the controller, the opening and closing of the power switch unit are controlled by the controller, when the power switch unit is in an on state, the communication control circuit is in a power transmission mode, and when the power switch unit is in an off state, the communication control circuit is in a signal transmission mode; the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are respectively connected with the controller, the second end is respectively used for being connected with the power line, and the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are used for transmitting serial signals in a signal transmission mode and transmitting electric power in a power transmission mode. The present disclosure enables circuitry for power transmission to implement communication signal transmission functions without increasing the number of cables and additional modulation/demodulation circuits by modifying communication control circuits of a receiving end and a transmitting end.

Fig. 2 is a schematic structural diagram of a power switch unit in a communication control circuit based on power transmission according to an embodiment of the present disclosure. As shown in fig. 2, in one implementation of the disclosed embodiments, a power switching unit may include: the power conduction module and the controlled signal module.

In some alternative embodiments, the power conduction module comprises a first transistor and a first resistor, wherein a first end of the first transistor is used for receiving circuit power input, a second end of the first transistor is used for being connected with a power line, a control end of the first transistor is connected with the controlled signal module, one end of the first resistor is connected with a control end of the first transistor, and the other end of the first resistor is connected with the first end of the first transistor; the controlled signal module comprises a second transistor, wherein the control end of the second transistor is used for receiving the controller signal, the first end of the second transistor is connected with the power conduction module, and the second end of the second transistor is grounded.

The first transistor may be a MOS transistor, or may be another transistor that may provide the same function, and the second transistor may be a transistor, or may be another transistor that may provide the same function, specifically, any transistor, which is not limited in this embodiment of the disclosure.

In some alternative embodiments, the power conduction module further comprises a second resistor, wherein one end of the second resistor is connected to the control terminal of the first transistor and the other end of the second resistor is connected to the first terminal of the second transistor.

In some alternative embodiments, the controlled signal module further includes a third resistor and a fourth resistor, where one end of the third resistor is connected to the output end of the controller and the other end of the third resistor is connected to the control end of the second transistor, and one end of the fourth resistor is connected to the control end of the second transistor and the other end of the fourth resistor is connected to the second end of the second transistor.

For example, as shown in fig. 2, in one implementation of the power switch unit, the first transistor Q1 is a MOS transistor, and the second transistor Q2 is a triode. The drain terminal and the source terminal of the MOS transistor (the first transistor Q1) are respectively connected with the Power input voltage Power_IN and the Power Line Power_line, the grid electrode of the MOS transistor (the first transistor Q1) is connected with the first resistor R1, the second resistor R2 IN series and connected with the collector terminal of the triode (the second transistor Q2); one end of the first resistor R1 is connected with the electric Power input voltage Power_IN; the emitter end of the triode (the second transistor Q2) is connected with one end of the fourth resistor R4 and is grounded, the base end of the triode (the second transistor Q2) is connected with the other end of the fourth resistor R4, one end of the third resistor R3 is connected in series and is connected into the controller circuit, and the other end of the third resistor R3 receives a control signal Power_EN output by the controller.

Specifically, the power switch unit performs conversion between a power transmission mode and a signal transmission mode according to control of a controller, for example, the controller sends high and low levels respectively to control on and off of a collector and an emitter of a triode, so as to control on and off of a source and a drain of a MOS tube, and thus a power output end outputs voltage to a power line after the MOS tube is turned on.

In addition, the power switch unit may be a switch circuit provided in this embodiment, an optocoupler switch, or other devices with a switch control function, and the specific device type and composition are not limited in this disclosure.

Fig. 3 is a schematic structural diagram of a power transmitting end serial signal output unit in a communication control circuit based on power transmission according to an embodiment of the present disclosure, as shown in fig. 3, in one implementation manner of the embodiment of the present disclosure, the power transmitting end serial signal output unit may include: the device comprises a signal input module, a signal inversion module and a voltage bias module.

In some alternative embodiments, the signal input module comprises a third transistor, wherein a control end of the third transistor is used for receiving the serial signal output by the controller, a first end of the third transistor is connected with the signal inversion module and the voltage bias module, and a second end of the third transistor is grounded; the signal inversion module comprises a fourth transistor, wherein the control end of the fourth transistor is connected with the signal input module and the voltage bias module, the first end of the fourth transistor is connected with the power line and the voltage bias module, and the second end of the fourth transistor is grounded; the voltage bias module comprises a fifth resistor, wherein one end of the fifth resistor is used for voltage input of the controller, and the other end of the fifth resistor is connected with the signal inversion module.

The third transistor may be a transistor, or may be another transistor that may provide the same function, and the fourth transistor may be a transistor, or may be another transistor that may provide the same function, specifically, any transistor, which is not limited in this embodiment of the disclosure.

In some alternative embodiments, the power transmitting end serial signal output unit further comprises an acceleration module, wherein the acceleration module comprises a fifth transistor, one end of the acceleration module is connected with the signal input module, and the other end of the acceleration module is connected with the signal inverting module and the voltage biasing module.

The fifth transistor may be a diode, or may be another transistor that may provide the same function, specifically, what kind of transistor, which is not limited in the embodiments of the present disclosure.

In some alternative embodiments, the signal input module further includes a sixth resistor, wherein one end of the sixth resistor is connected to the control end of the third transistor and the other end of the sixth resistor is used for receiving the controller input signal.

In some alternative embodiments, the signal inverting module further comprises a seventh resistor, wherein one end of the seventh resistor is connected to the power line and the other end thereof is connected to the first end of the fourth transistor.

In some alternative embodiments, the voltage bias module further includes an eighth resistor, wherein one end of the eighth resistor is connected to the acceleration module, the signal input module, and the other end of the eighth resistor is connected to one end of the fifth resistor.

For example, as shown in fig. 3, in one implementation of the power transmitter serial signal output unit, the third transistor Q3 is a triode, the fourth transistor Q4 is a triode, and the fifth transistor Q5 is a diode. Wherein, the emitter end of the triode (third transistor Q3) is grounded, the base end of the triode (third transistor Q3) is connected IN series with a sixth resistor R6 and is connected to the controller circuit, the collector end of the triode (third transistor Q3) is connected with the base end of the triode (fourth transistor Q4), the positive end of the diode (fifth transistor Q5), the eighth resistor R8 is connected IN series, the fifth resistor R5 is connected and is connected to the Power input voltage Power_IN; an emitter of the triode (fourth transistor Q4) is grounded, a collector of the triode (fourth transistor Q4) is connected with a seventh resistor R7, a negative end of a diode (fifth transistor Q5) is connected, a fifth resistor R5 is connected IN series, and a Power input voltage Power_IN is accessed; the other end of the seventh resistor R7 is connected to the Power Line.

Specifically, the serial signal output unit of the power transmitting end can be used for realizing in-phase output of a communication level signal, the in-phase output can ensure that the logic level of the output end is consistent with that of the receiving end, and the in-phase output process can be as follows: when the circuit Line (power_line) connected to the controller is at a high level signal, the transistor (third transistor Q3) is turned on, the collector of the transistor (third transistor Q3), that is, the base of the transistor (fourth transistor Q4), is at a low level, and when the transistor (fourth transistor Q4) is turned off, the Power Line is at a high level, whereas when the circuit Line (power_line) connected to the controller is at a low level, the transistor (third transistor Q3) is turned off, and the collector of the transistor (third transistor Q3), that is, the base of the transistor (fourth transistor Q4), is at a high level, and when the transistor (fourth transistor Q4) is turned on, the Power Line is at a low level. The specific power transmitting end serial signal output unit is not limited in this disclosure.

Fig. 4 is a schematic structural diagram of a power transmitting end serial signal receiving unit in another communication control circuit based on power transmission according to an embodiment of the present disclosure, as shown in fig. 4, in one implementation manner of the embodiment of the present disclosure, the power transmitting end serial signal receiving unit may include: and a clamping voltage division module.

In some alternative embodiments, the clamping voltage dividing module includes a sixth transistor and a seventh transistor, wherein one end of the sixth transistor is used for receiving the voltage input of the controller, the other end of the sixth transistor is connected to the controller, one end of the seventh transistor and the power line, and one end of the seventh transistor is grounded, and the other end of the seventh transistor is connected to the controller, one end of the sixth transistor and the power line.

The sixth transistor may be a diode, or may be another transistor that may provide the same function, and the seventh transistor may be a diode, or may be another transistor that may provide the same function, specifically, any transistor, which is not limited in this embodiment of the disclosure.

In some optional embodiments, the power transmitting end serial signal receiving unit further includes a first voltage dividing module, where the first voltage dividing module includes a ninth resistor, one end of the first voltage dividing module is connected to the power line, and the other end of the first voltage dividing module is connected to the first clamping voltage dividing module and the controller.

For example, as shown in fig. 4, in one implementation of the power transmitter serial signal receiving unit, the sixth transistor Q6 is a diode, and the seventh transistor Q7 is a diode. Wherein, the negative terminal of the diode (the sixth transistor Q6) is connected with the output voltage Power_Send_VCC of the controller, the positive terminal of the diode (the sixth transistor Q6) is connected with the input port UART_receiver_A of the controller, the ninth resistor R9, the negative terminal of the diode (the seventh transistor Q7); the positive electrode of the diode (seventh transistor Q7) is grounded; the other end of the ninth resistor R9 is connected to the Power Line.

Specifically, the power transmitting end serial signal receiving unit is configured to receive a communication signal, where the unit performs current limiting and voltage dividing protection on a voltage on a power line through a ninth resistor R9, and then clamps the voltage through a diode (a sixth transistor Q6) and a diode (a seventh transistor Q7), so that an IO level input to the controller meets a maximum input voltage range, and the specific power transmitting end serial signal output unit is formed.

Further, as shown in fig. 5, when the communication control circuit is applied to the power receiving end, it may include: the power receiving end serial signal transmitting unit and the power receiving end serial signal receiving unit.

Specifically, the power receiving end serial signal transmitting unit and the power receiving end serial signal receiving unit are used for transmitting serial signals in a signal transmission mode.

When the power output mode is changed into the communication signal transmission mode, the power switch unit of the power transmitting end can be utilized to turn off the power output, then the power transmitting end serial signal output unit is utilized to transmit signals to the power receiving end, and after the power receiving end serial signal receiving unit receives the signals, the power receiving end serial signal transmitting unit is utilized to feed back and output response signals. And then after the serial signal receiving unit of the power transmitting end receives the response, the controller of the power transmitting end decides whether to continue outputting power or continue the communication mode.

Further, as shown in fig. 6, in one implementation manner of the embodiment of the disclosure, when the communication control circuit is applied to the power receiving end, the method may further include: power load, controller.

Specifically, a power load is connected to a power line; the power receiving end serial signal transmitting unit and the first end of the power receiving end serial signal receiving unit are respectively connected with the controller and are used for transmitting a serial port receiving signal UART_receiver_B to the controller or receiving a serial port transmitting signal UART_Send_B output by the controller, and the second end is respectively connected with the power line. The serial port receiving signal uart_receive_b, the serial port transmitting signal uart_send_b may be TTL (transistor to transistor logic) or CMOS level signals.

Fig. 7 is a schematic structural diagram of a power-receiving-end serial signal transmitting unit in another communication control circuit based on power transmission according to an embodiment of the present disclosure, as shown in fig. 7, in one implementation manner of the embodiment of the present disclosure, the power-receiving-end serial signal transmitting unit may include: the device comprises a signal input module and a signal inverting module.

In some alternative embodiments, the signal input module includes an eighth transistor and a tenth resistor, wherein a control end of the eighth transistor is connected to the first end of the signal inverting module, a first end of the eighth transistor is connected to the tenth resistor, a second end of the eighth transistor is grounded, one end of the tenth resistor is connected to the power line, and the other end of the tenth resistor is connected to the first end of the eighth transistor; the signal inversion module comprises a ninth transistor and an eleventh resistor, wherein the control end of the ninth transistor is used for being connected with the input port of the controller, the first end of the ninth transistor is used for being connected with the output voltage of the controller and is connected with the signal input module, and the second end of the ninth transistor is grounded.

The eighth transistor may be a transistor, or may be another transistor that may provide the same function, and the ninth transistor may be a transistor, or may be another transistor that may provide the same function, and in particular, the embodiment of the disclosure is not limited thereto.

In some alternative embodiments, the signal inversion module further includes a twelfth resistor, wherein one end of the twelfth resistor is connected to the control end of the ninth transistor and the other end thereof is used to access the controller output voltage.

For example, as shown in fig. 7, in one implementation of the power receiving end serial signal transmitting unit, the eighth transistor Q8 is a triode, and the ninth transistor Q9 is a triode. The emitter end of the triode (eighth transistor Q8) is grounded, the base end of the triode (eighth transistor Q8) is connected in series with a tenth resistor R10 and is connected to the input port of the controller, the collector end of the triode (eighth transistor Q8) is connected with the base end of the triode (ninth transistor Q9), is connected in series with an eleventh resistor R11 and is accessed to the output voltage Power_receiver_VCC of the controller; an emitter terminal of the triode (ninth transistor Q9) is grounded, and a collector terminal of the triode (ninth transistor Q9) is connected in series with a twelfth resistor R12 and connected to a power line. One end of the tenth resistor R10 is connected to the Power line_line, and the other end is connected to the eighth transistor Q8. One end of the twelfth resistor R12 is connected with the ninth transistor Q9, and the other end of the twelfth resistor R is used for receiving the serial port transmitting signal UART_Send_B. The serial port transmit signal uart_send_b may be a TTL (transistor to transistor logic) or CMOS level signal.

Specifically, the power receiving end serial signal transmitting unit is configured to receive the communication signal output by the power transmitting end and then feedback the response signal, and because the power receiving end may not have a similar source of electric power input, the collector of the triode (eighth transistor Q8) is in an open circuit structure, but when the power transmitting end is connected to the power receiving end, the collector of the triode (eighth transistor Q8) is pulled up through the fifth resistor R5 and the seventh resistor R7 of the power transmitting end serial signal output unit, so as to realize the requirement of outputting a high level. The specific power receiving end serial signal transmitting unit is not limited in this disclosure.

Fig. 8 is a schematic structural diagram of a power transmitting end serial signal receiving unit in another communication control circuit based on power transmission according to an embodiment of the disclosure, as shown in fig. 8, in one implementation manner of the embodiment of the disclosure, the power receiving end serial signal receiving unit may include: and a clamping voltage division module.

In some alternative embodiments, the clamping voltage dividing module includes a tenth transistor and an eleventh transistor, wherein one end of the tenth transistor is used for receiving a voltage input of the controller, the other end of the tenth transistor is connected to the controller, one end of the eleventh transistor and a power line, and one end of the eleventh transistor is grounded, and the other end of the eleventh transistor is connected to the controller, one end of the sixth transistor and the power line.

The tenth transistor may be a diode, or may be another transistor that may provide the same function, and the eleventh transistor may be a diode, or may be another transistor that may provide the same function, specifically, any transistor, which is not limited in this embodiment of the disclosure.

In some alternative embodiments, the power receiving end serial signal receiving unit further includes a first voltage dividing module, where the first voltage dividing module includes a twelfth resistor, one end of the first voltage dividing module is connected to the power line, and the other end of the first voltage dividing module is connected to the first clamping voltage dividing module and the controller.

For example, as shown in fig. 8, in one implementation of the power transmitter serial signal receiving unit, the tenth transistor Q10 is a diode, and the eleventh transistor Q11 is a diode. Wherein, the negative terminal of the diode (tenth transistor Q10) is connected to the controller output voltage power_receive_vcc, the positive terminal of the diode (tenth transistor Q10) is connected to the controller input port (output serial port transmit signal uart_receive_b), the twelfth resistor R12, the negative terminal of the diode (eleventh transistor Q11); the positive electrode of the diode (eleventh transistor Q11) is grounded; the other end of the twelfth resistor R12 is connected to the Power Line. The serial port transmit signal uart_receive_b may be a TTL (transistor to transistor logic) or CMOS level signal.

Specifically, the power receiving end serial signal transmitting unit is configured to receive a communication signal output by the power transmitting end, where the unit performs current limiting and voltage dividing protection on a voltage on a power line through a twelfth resistor R12, and then clamps the voltage through a diode (tenth transistor Q10) and a diode (eleventh transistor Q11), so that an IO level input to the controller meets a maximum input voltage range. The specific power receiving end serial signal receiving unit is not limited in this disclosure.

In summary, the present disclosure enables circuitry for power transmission to implement a communication signal transmission function without increasing the number of cables and additional modulation/demodulation circuits by modifying communication control circuits of a receiving end and a transmitting end.

Therefore, the scheme has the following beneficial effects: the scheme utilizes two wires to realize time-sharing power and signal transmission, has a simple circuit structure, is convenient to realize, and is suitable for upgrading and reforming of existing products such as scooter chargers and quick charging schemes. Because this scheme need not to increase the electric circuit, but all need two lines improvement based on traditional charger, therefore also need not to change the interface when reforming transform, only need to the circuit board at both ends update can, realized the compatibility of current product outward appearance. When the communication control related unit is realized, the selected devices are all composed of common MOS tubes, triodes, resistors, diodes and other devices, so that the communication control related unit is convenient to realize, does not need a special integrated circuit for modulation and demodulation, saves cost and has high economic benefit.

The embodiment of the present disclosure further provides a communication control system, as shown in fig. 9, including the communication control circuit applied to the power transmitting end and the communication control circuit applied to the power receiving end described in the above embodiment of the present disclosure. The communication control circuit applied to the power transmitting end is connected with the communication control circuit applied to the power receiving end through a power line and a grounding wire.

In some embodiments of the present disclosure, the chip model corresponding to the controller in the communication control circuit is any one of the following: STM32F 103, STM32F104, AT32F403 of the Italian Semiconductor (ST).

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of utility models consistent with some aspects of the disclosure as detailed in the accompanying claims.

In the description of the present specification, reference is made to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., meaning that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (16)

1. A power transmission-based communication control circuit, applied to a power transmitting end, comprising: the power switch unit, the controller, the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit;

The power switch unit is used for accessing a power line and is connected with the controller, the opening and closing of the power switch unit are controlled by the controller, when the power switch unit is in an on state, the communication control circuit is in a power transmission mode, and when the power switch unit is in an off state, the communication control circuit is in a signal transmission mode;

the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are respectively connected with the controller, the second end is respectively used for being connected with the power line, and the power transmitting end serial signal output unit and the power transmitting end serial signal receiving unit are used for transmitting serial signals in the signal transmission mode and transmitting electric power in the power transmission mode.

2. The power transfer based communication control circuit of claim 1, wherein the power switching unit comprises: a power conduction module and a controlled signal module;

the power conduction module comprises a first transistor and a first resistor, wherein a first end of the first transistor is used for receiving circuit power input, a second end of the first transistor is used for being connected with the power line, a control end of the first transistor is connected with the controlled signal module, one end of the first resistor is connected with a control end of the first transistor, and the other end of the first resistor is connected with the first end of the first transistor;

The controlled signal module comprises a second transistor, wherein the control end of the second transistor is used for receiving the controller signal, the first end of the second transistor is connected with the power conduction module, and the second end of the second transistor is grounded.

3. The power transfer based communication control circuit of claim 2, wherein,

the power conduction module further comprises a second resistor, wherein one end of the second resistor is connected with the control end of the first transistor, and the other end of the second resistor is connected with the first end of the second transistor;

and/or the number of the groups of groups,

the controlled signal module further comprises a third resistor and a fourth resistor, wherein one end of the third resistor is connected with the output end of the controller, the other end of the third resistor is connected with the control end of the second transistor, and one end of the fourth resistor is connected with the control end of the second transistor, and the other end of the fourth resistor is connected with the second end of the second transistor.

4. A power transmission-based communication control circuit according to any one of claims 1 to 3, wherein the power transmitting-side serial signal output unit includes: the device comprises a signal input module, a signal inversion module and a voltage bias module;

the signal input module comprises a third transistor, wherein the control end of the third transistor is used for receiving a serial signal output by the controller, the first end of the third transistor is connected with the signal inversion module and the voltage bias module, and the second end of the third transistor is grounded;

The signal inversion module comprises a fourth transistor, wherein the control end of the fourth transistor is connected with the signal input module and the voltage bias module, the first end of the fourth transistor is connected with the power line and the voltage bias module, and the second end of the fourth transistor is grounded;

the voltage bias module comprises a fifth resistor, wherein one end of the fifth resistor is used for voltage input of the controller, and the other end of the fifth resistor is connected with the signal inversion module.

5. The power transfer based communication control circuit of claim 4, wherein,

the power transmitting end serial signal output unit further comprises an acceleration module, wherein the acceleration module comprises a fifth transistor, one end of the acceleration module is connected with the signal input module, and the other end of the acceleration module is connected with the signal inversion module and the voltage bias module;

and/or the number of the groups of groups,

the signal input module further comprises a sixth resistor, wherein one end of the sixth resistor is connected with the control end of the third transistor, and the other end of the sixth resistor is used for receiving the controller input signal;

and/or the number of the groups of groups,

the signal inversion module further comprises a seventh resistor, wherein one end of the seventh resistor is connected with the power line, and the other end of the seventh resistor is connected with the first end of the fourth transistor;

And/or the number of the groups of groups,

the voltage bias module further comprises an eighth resistor, wherein one end of the eighth resistor is connected with the acceleration module and the signal input module, and the other end of the eighth resistor is connected with one end of the fifth resistor.

6. A power transmission-based communication control circuit according to any one of claims 1 to 3, characterized in that,

the power transmitting end serial signal receiving unit includes: a clamping voltage division module;

the clamping voltage division module comprises a sixth transistor and a seventh transistor, wherein one end of the sixth transistor is used for receiving voltage input of the controller, the other end of the sixth transistor is connected with one end of the controller and one end of the seventh transistor and a power line, and one end of the seventh transistor is grounded, and the other end of the seventh transistor is connected with one end of the controller and one end of the sixth transistor and the power line.

7. The power transfer based communication control circuit of claim 6, wherein,

the power transmitting end serial signal receiving unit further comprises a first voltage dividing module, wherein the first voltage dividing module comprises a ninth resistor, one end of the first voltage dividing module is connected with the power line, and the other end of the first voltage dividing module is connected with a first clamping voltage dividing module and the controller.

8. A power transmission based communication control circuit, adapted for use in a power receiving end and adapted for communication connection with a power transmission based communication control circuit according to any of claims 1 to 7, comprising: a power receiving end serial signal transmitting unit and a power receiving end serial signal receiving unit;

the power receiving end serial signal transmitting unit and the power receiving end serial signal receiving unit are used for transmitting serial signals in the signal transmission mode.

9. The power transmission-based communication control circuit of claim 8, wherein the power receiving end further comprises: a power load, a controller;

the power load is connected to the power line;

the power receiving end serial signal transmitting unit and the first end of the power receiving end serial signal receiving unit are respectively connected with the controller, and the second end of the power receiving end serial signal transmitting unit is respectively connected with the power line.

10. The power transmission-based communication control circuit according to claim 8, wherein the power receiving-end serial signal transmitting unit includes: the signal input module and the signal inverting module;

the signal input module comprises an eighth transistor and a tenth resistor, wherein the control end of the eighth transistor is connected with the first end of the signal inversion module, the first end of the eighth transistor is connected with the tenth resistor, the second end of the eighth transistor is grounded, one end of the tenth resistor is connected with a power line, and the other end of the tenth resistor is connected with the first end of the eighth transistor;

The signal inversion module comprises a ninth transistor and an eleventh resistor, wherein the control end of the ninth transistor is used for being connected with the input port of the controller, the first end of the ninth transistor is used for being connected with the output voltage of the controller, the signal inversion module is connected with the signal input module, and the second end of the ninth transistor is grounded.

11. The power transfer based communication control circuit of claim 10, wherein,

the signal inversion module further comprises a twelfth resistor, wherein one end of the twelfth resistor is connected with the control end of the ninth transistor, and the other end of the twelfth resistor is used for being connected with the output voltage of the controller.

12. The power transmission-based communication control circuit according to claim 8, wherein the power receiving-end serial signal receiving unit comprises: a clamping voltage division module;

the clamping voltage division module comprises a tenth transistor and an eleventh transistor, wherein one end of the tenth transistor is used for receiving voltage input of the controller, the other end of the tenth transistor is connected with one end of the controller and one end of the eleventh transistor and a power line, one end of the eleventh transistor is grounded, and the other end of the eleventh transistor is connected with one end of the controller and one end of the sixth transistor and the power line.

13. The power transfer based communication control circuit of claim 12, wherein,

the power receiving end serial signal receiving unit further comprises a first voltage dividing module, wherein the first voltage dividing module comprises a twelfth resistor, one end of the first voltage dividing module is connected with the power line, and the other end of the first voltage dividing module is connected with the clamping voltage dividing module and the controller.

14. A communication control system, comprising: a communication control circuit applied to a power transmitting end as claimed in any one of claims 1 to 7, and a communication control circuit applied to a power receiving end as claimed in any one of claims 8 to 13.

15. The communication control system according to claim 14, wherein the communication control circuit applied to the power transmitting side is connected to the communication control circuit applied to the power receiving side through a power line and a ground line.

16. The communication control system according to claim 14, wherein the chip model corresponding to the controller in the communication control circuit is any one of: STM32F 103, STM32F104, AT32F403 of the Italian semiconductor.