Graphene heating control circuit, heating equipment and floor heating plate

Abstract

The utility model discloses a graphene heating control circuit, a heating device and a floor heating plate, a power supply, a voltage conversion module, a temperature control module and a graphene heater are connected through a first connector and a second connector, and the second output end of the power supply and the second output end of the power supply share a third connecting end. And the second input end of the temperature control module and the second input end of the graphene heater share the fifth connecting end, so that the number of connecting ends can be reduced, the wiring difficulty is reduced, the circuit connection is simpler and more convenient, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to heating circuits, and more particularly to a graphene heating control circuit, heating equipment, and floor heating panel. Background Technology

[0002] Because of its excellent thermal and electrical conductivity, graphene generates heat quickly and uniformly when an electric current passes through a graphene film or material due to its resistance. Therefore, graphene is widely used in heaters.

[0003] To better control the temperature of the graphene heater, a thermostat is usually installed. This thermostat controls the temperature of the graphene-heated product, thereby improving the user experience and safety. However, because the operating voltage of the graphene heater is different from that of the thermostat, separate power supplies are required, resulting in a more complex structure and higher production costs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a graphene heating control circuit, heating equipment and floor heating board with simple structure and low production cost.

[0005] In a first aspect, this utility model provides a graphene heating control circuit for use in a graphene heater. The graphene heating control circuit includes a first connector, a second connector, a voltage conversion module, a temperature control module, and a graphene heater. The first connector includes a first connection terminal, a second connection terminal, and a third connection terminal. The second connector includes a third connection terminal corresponding to the first connection terminal, a fourth connection terminal corresponding to the second connection terminal, and a fifth connection terminal corresponding to the third connection terminal. The temperature control module includes a temperature sampling module for acquiring the temperature of the graphene heater, a control chip, and a switching element. The control chip is connected to the control terminals of the temperature sampling module and the switching element, respectively.

[0006] The first connection terminal is connected to the first output terminal of the power supply, the second connection terminal is connected to the first output terminal of the voltage conversion module, and the third connection terminal is connected to the second output terminal of the power supply and the second output terminal of the voltage conversion module, respectively; the first input terminal of the voltage conversion module is connected to the first output terminal of the power supply, and the second input terminal of the voltage conversion module is connected to the second output terminal of the power supply.

[0007] The third connection terminal is connected to the first terminal of the switching element, the second terminal of the switching element is connected to the first input terminal of the graphene heater, the fourth connection terminal is connected to the first input terminal of the temperature control module, and the fifth connection terminal is connected to the second input terminal of the temperature control module and the second input terminal of the graphene heater, respectively.

[0008] Secondly, this utility model provides a heating device, including a graphene heater and a graphene heating control circuit as described in any of the above claims.

[0009] Thirdly, this utility model provides a floor heating panel, including a panel body, a graphene heater, and a graphene heating control circuit as described in any of the above claims; the graphene heater and the graphene heating control circuit are disposed inside the panel body.

[0010] In this embodiment, the connection between the power supply, voltage conversion module, temperature control module and graphene heater is established by using the first connector and the second connector. The second output terminal of the power supply shares the third connection terminal, and the second input terminal of the temperature control module and the second input terminal of the graphene heater share the fifth connection terminal. This reduces the number of connection terminals, reduces wiring difficulty, makes circuit connection simpler and more convenient, and reduces production costs.

[0011] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the graphene heating control circuit in one embodiment of the present invention;

[0013] Figure 2 This is a circuit diagram of a voltage conversion module in one embodiment of the present invention;

[0014] Figure 3 This is a circuit diagram of a temperature sampling module in one embodiment of the present invention;

[0015] Figure 4 This is a circuit diagram of a switching element in one embodiment of the present invention;

[0016] Figure 5 This is a schematic diagram of the structure of a heating device in one embodiment of the present invention;

[0017] Figure 6 This is a schematic diagram of the structure of the floor heating board in one embodiment of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

[0019] It should be understood that the described embodiments are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0021] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Furthermore, in the description of this application, unless otherwise stated, "several" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0023] like Figure 1 As shown, this utility model provides a graphene heating control circuit, which is applied to a graphene heater, including a first connector 110, a second connector 120, a voltage conversion module 130 and a temperature control module 140.

[0024] The first connector 110 includes a first connecting end 111, a second connecting end 112, and a third connecting end 113.

[0025] The second connector 120 includes a third connection end 121 corresponding to the first connection end 111, a fourth connection end 122 corresponding to the second connection end 112, and a fifth connection end 123 corresponding to the third connection end 113;

[0026] The temperature control module 140 includes a temperature sampling module 141 for collecting the temperature of the graphene heater, a control chip 142, and a switching element 143; the control chip 142 is connected to the control terminals of the temperature sampling module 141 and the switching element 143 respectively.

[0027] The first connection terminal 111 is connected to the first output terminal of the power supply, the second connection terminal 112 is connected to the first output terminal of the voltage conversion module 130, and the third connection terminal 113 is connected to the second output terminal of the power supply and the second output terminal of the voltage conversion module 130, respectively; the first input terminal of the voltage conversion module 130 is connected to the first output terminal of the power supply, and the second input terminal of the voltage conversion module 130 is connected to the second output terminal of the power supply.

[0028] The third connection terminal 121 is connected to the first terminal of the switching element 143, the second terminal of the switching element 143 is connected to the first input terminal of the graphene heater, the fourth connection terminal 122 is connected to the first input terminal of the temperature control module 140, and the fifth connection terminal 123 is connected to the second input terminal of the temperature control module 140 and the second input terminal of the graphene heater, respectively.

[0029] In this embodiment, the power supply can be a 220V AC power supply. The first output terminal of the power supply can be the live wire of the 220V AC power supply, and the second output terminal of the power supply can be the neutral wire of the 220V AC power supply.

[0030] The first connector 110 and the second connector 120 may be provided with multiple metal pins, and the connection ends of the first connector 110 and the second connector 120 are connected through a connecting wire with interfaces at both ends that are connected to the metal pins. Alternatively, the first connector 110 and the second connector 120 may be detachably connected.

[0031] The first connector 110 and the second connector 120 can be used to separate the power and voltage conversion module 130, the temperature control module 140 and the graphene heater and place them on two areas or two circuit boards, thereby making production and circuit board layout more convenient.

[0032] In one embodiment, the first connector 110 is a male connector and the second connector 120 is a female connector;

[0033] Alternatively, the first connector 110 may be a female connector and the second connector 120 may be a male connector.

[0034] This application only requires one male connector and one female connector to achieve a detachable connection between the power supply and voltage conversion module 130, the temperature control module 140 and the graphene heater, which has a simple structure and low production cost.

[0035] The voltage conversion module 130 is used to convert the power supply voltage into a target voltage, which can be the operating voltage of the temperature control module 140, so that the converted voltage can supply power to the temperature control module 140 and meet the power requirements of the temperature control module 140.

[0036] The voltage conversion module 130 may include AC-to-DC circuits, voltage conversion circuits, and other circuits, through which AC-to-DC circuits...

[0037] The temperature control module 140 uses the temperature sampling module 141 to collect the temperature of the graphene heater. The control chip 142 disconnects the power supply circuit of the graphene heater through the switching element 143, thereby realizing the power supply control of the graphene heater, avoiding excessive heating temperature of the graphene heater, and keeping the graphene heater at a suitable temperature to improve the user experience.

[0038] The temperature sampling module 141 can use common temperature detection elements such as temperature sensors and thermistors to sample the temperature of the graphene heater.

[0039] The control chip 142 can be a microcontroller or other chip with the above-mentioned control functions.

[0040] The switching element 143 can be a commonly used switching element such as a switch, relay, or transistor.

[0041] In this embodiment, by using a first connector and a second connector to establish the connection between the power supply, voltage conversion module, temperature control module and graphene heater, the second output terminal of the power supply and the second output terminal of the power supply share a third connection terminal, and the second input terminal of the temperature control module and the second input terminal of the graphene heater share a fifth connection terminal, the number of connection terminals can be reduced, the wiring difficulty can be reduced, the circuit connection can be made simpler and more convenient, and the production cost can be reduced.

[0042] In one embodiment, the voltage conversion module 130 includes a transformer T, a rectifier bridge D1, and a filter circuit C2;

[0043] The first input terminal of the transformer T is connected to the first output terminal of the power supply, the second input terminal of the transformer T is connected to the second output terminal of the power supply, the first output terminal of the transformer T is connected to the first input terminal of the rectifier bridge D1, the second output terminal of the transformer T is connected to the second input terminal of the rectifier bridge D1, the first output terminal of the rectifier bridge D1 is connected to the first input terminal of the filter circuit C2, the second output terminal of the rectifier bridge D1 is connected to the second input terminal of the filter circuit C2, the first output terminal of the filter circuit C2 is connected to the second connection terminal, and the second output terminal of the filter circuit C2 is connected to the third connection terminal.

[0044] The voltage conversion module 130 can be used to convert 220V AC voltage into 12V voltage for the operation of the temperature control module.

[0045] In this embodiment, transformer T is used to output 12V AC voltage.

[0046] The filter circuit C2 may include commonly used filtering components such as filter capacitors, filters, and inductors. In this embodiment, the filter circuit C2 uses a filter capacitor to filter the output power signal.

[0047] In this embodiment, a transformer and a rectifier bridge are used to convert 220V AC voltage to 12V DC voltage, thereby meeting the power requirements of the temperature control module. A filter circuit is used to filter the output voltage signal, thereby improving the reliability of the output voltage signal.

[0048] In one embodiment, the transformer T is an isolation transformer, which refers to a transformer whose input winding and output winding are electrically isolated. The isolation transformer T can achieve complete electrical insulation between the primary side and the secondary side, thereby improving the safety of power supply use.

[0049] Electrical isolation between the primary and secondary sides is achieved by using an isolation transformer T. The ground level of the secondary side of the isolation transformer T can be connected to the neutral wire of the primary side at the ground connection terminal without affecting the power output, thus improving the stability of the power output.

[0050] like Figure 3 As shown, in one embodiment, the temperature sampling module includes a thermistor R2, a voltage divider resistor R1, and a capacitor C1;

[0051] The first end of the thermistor R2 is connected to the control chip 142, the first end of the capacitor C1 and the second end of the voltage divider resistor R1. The first end of the voltage divider resistor R1 is connected to the power supply, and the second end of the capacitor C1 and the second end of the thermistor R2 are grounded.

[0052] The thermistor R2 can be either a negative temperature coefficient thermistor or a positive temperature coefficient thermistor.

[0053] In this embodiment, by utilizing the characteristic that the resistance value of a thermistor changes with temperature, the control chip detects the temperature of the graphene heater by detecting the voltage of the thermistor. At the same time, a capacitor is used to filter the temperature detection signal output to the control chip 142, thereby improving the accuracy of temperature detection.

[0054] like Figure 4As shown, in one embodiment, the switching element is a relay KY1; the first contact of the relay KY1 is connected to the third connection terminal, the second contact of the relay KY1 is connected to the first input terminal of the graphene heater, the first end of the coil of the relay KY1 is connected to the power supply, and the second end of the coil of the relay KY1 is connected to the control chip.

[0055] Optionally, the switching element further includes a diode D3 connected in parallel across the coil of relay KY1, using diode D3 to protect relay KY1, thereby improving the safety of the relay and the reliability of the circuit.

[0056] like Figure 5 As shown, this application embodiment also provides a heating device, including a graphene heater 210 and a graphene heating control circuit 220 as described in any of the above claims.

[0057] like Figure 6 As shown, this application embodiment also provides a floor heating board, including a board body 310, a graphene heater 320 and a graphene heating control circuit 330 as described in any of the above claims; the graphene heater 320 and the graphene heating control circuit 330 are disposed inside the board body 310.

[0058] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A graphene heating control circuit, characterized by, The graphene heating control circuit, applied to a graphene heater, includes a first connector, a second connector, a voltage conversion module, a temperature control module, and a graphene heater. The first connector includes a first connection terminal, a second connection terminal, and a third connection terminal. The second connector includes a third connection terminal corresponding to the first connection terminal, a fourth connection terminal corresponding to the second connection terminal, and a fifth connection terminal corresponding to the third connection terminal. The temperature control module includes a temperature sampling module for acquiring the temperature of the graphene heater, a control chip, and a switching element. The control chip is connected to the control terminals of both the temperature sampling module and the switching element. The first connection terminal is connected to the first output terminal of the power supply, the second connection terminal is connected to the first output terminal of the voltage conversion module, and the third connection terminal is connected to the second output terminal of the power supply and the second output terminal of the voltage conversion module, respectively; the first input terminal of the voltage conversion module is connected to the first output terminal of the power supply, and the second input terminal of the voltage conversion module is connected to the second output terminal of the power supply. The third connection terminal is connected to the first terminal of the switching element, the second terminal of the switching element is connected to the first input terminal of the graphene heater, the fourth connection terminal is connected to the first input terminal of the temperature control module, and the fifth connection terminal is connected to the second input terminal of the temperature control module and the second input terminal of the graphene heater, respectively.

2. The graphene heating control circuit of claim 1, wherein: The temperature sampling module includes a thermistor, a voltage divider resistor, and a capacitor; The first end of the thermistor is connected to the control chip, the first end of the capacitor, and the second end of the voltage divider resistor. The first end of the voltage divider resistor is connected to the power supply, and the second end of the capacitor and the second end of the thermistor are grounded.

3. The graphene heating control circuit of claim 1, wherein, The switching element is a relay; the first contact of the relay is connected to the third connection terminal, the second contact of the relay is connected to the first input terminal of the graphene heater, the first end of the relay coil is connected to the power supply, and the second end of the relay coil is connected to the control chip.

4. The graphene heating control circuit of claim 1, wherein: The voltage conversion module includes a transformer, a rectifier bridge, and a filter circuit; The first input terminal of the transformer is connected to the first output terminal of the power supply, the second input terminal of the transformer is connected to the second output terminal of the power supply, the first output terminal of the transformer is connected to the first input terminal of the rectifier bridge, the second output terminal of the transformer is connected to the second input terminal of the rectifier bridge, the first output terminal of the rectifier bridge is connected to the first input terminal of the filter circuit, the second output terminal of the rectifier bridge is connected to the second input terminal of the filter circuit, the first output terminal of the filter circuit is connected to the second connection terminal, and the second output terminal of the filter circuit is connected to the third connection terminal.

5. The graphene heating control circuit of claim 4, wherein: The transformer is an isolation transformer.

6. The graphene heating control circuit of claim 1, wherein: The first connector is a male connector, and the second connector is a female connector; Alternatively, the first connector may be a female connector and the second connector may be a male connector.

7. A heating device, characterized by It includes a graphene heater and a graphene heating control circuit as described in any one of claims 1-6.

8. A floor heating panel, characterized in that, It includes a plate, a graphene heater, and a graphene heating control circuit as described in any one of claims 1-6; the graphene heater and the graphene heating control circuit are disposed inside the plate.

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