Wireless communication coil panel and cooking utensil

Abstract

The utility model relates to the technical field of cooking utensils, and provides a wireless communication coil panel and a cooking utensil, the wireless communication coil panel comprises a circuit board and a wire, the circuit board is provided with a substrate, a first bonding pad, a second bonding pad and a communication winding, and the communication winding, the first bonding pad and the second bonding pad are all arranged on the same side of the substrate in the thickness direction; at least one of the first bonding pad and the second bonding pad is connected with the communication winding through a wire.

Description

Technical Field

[0001] This application relates to the field of cooking appliance technology, and in particular to a wireless communication coil plate and cooking appliance. Background Technology

[0002] This section is intended to provide background or context for embodiments of this application. The description herein is not intended to imply that it is prior art simply because it is included in this section.

[0003] Coil disks typically include communication coils, which are used to realize communication functions. In related technologies, communication coils are formed by winding enameled wire, which is difficult to manufacture and relies almost entirely on manual processing, resulting in manufacturing costs far exceeding material costs. Utility Model Content

[0004] In view of this, the present application aims to provide a wireless communication coil plate and cooking appliance that can reduce production costs.

[0005] The first aspect of this application provides a wireless communication coil disk, including:

[0006] A circuit board has a substrate, a first pad, a second pad, and a communication winding, wherein the communication winding, the first pad, and the second pad are all disposed on the same side of the substrate along the thickness direction.

[0007] A wire, at least one of the first pad and the second pad, is connected to the communication winding via the wire.

[0008] In some embodiments, the communication winding includes a first winding and a second winding, at least a portion of the first winding and at least a portion of the second winding being spirally arranged and alternately spaced, and at least one of the first winding and the second winding being connected to the wire.

[0009] In some embodiments, both the first winding and the second winding are routed from the first endpoint toward opposite sides and then spiral outwards, with the first endpoint connected to the first pad via the wire.

[0010] In some embodiments, the conductor includes a first conductor, a second conductor, and a third conductor, the second endpoints of the first winding and the second winding are located on opposite sides of a first direction, the first pad and the second pad are located on the same side of the communication winding along a second direction, the first conductor connects the second endpoints of the first winding and the second winding, the second conductor connects the first conductor and the second pad, the third conductor connects the first endpoint and the first pad, and the first direction and the second direction intersect.

[0011] In some embodiments, the conductor includes a fourth conductor and a fifth conductor, the second endpoints of the first winding and the second endpoints of the second winding are located on opposite sides of a third direction, and the first pad and the second pad are located on the same side of the communication winding along the third direction;

[0012] The fourth wire connects the first endpoint and the first pad, and the second endpoint of the first winding and the second endpoint of the second winding are connected to the second pad via the fifth wire.

[0013] In some embodiments, a portion of the second winding extends from the first endpoint along the third direction to form a first straight segment, and the fifth conductor has a second straight segment parallel to the first straight segment.

[0014] In some embodiments, the fifth conductor has two curved segments located at the two ends of the second straight segment, one of which connects to the second end of the first winding, and the other of which connects to the second end of the second winding.

[0015] In some embodiments, the conductor includes a sixth conductor, the circuit board includes a first connection and a second connection, the first connection is located outside the communication winding and is directly connected to the first pad, the second connection is located outside the communication winding and is directly connected to the second pad, the first winding and the second winding both extend in parallel spirals from the first endpoint, the second endpoints of the first winding and the second winding are both connected to the second connection, and the sixth conductor connects the first connection and the first endpoint.

[0016] In some embodiments, both the first pad and the second pad are located on the outside of the communication winding.

[0017] In some embodiments, the wireless communication coil includes an insulating element, and the portions of the conductors that overlap with the communication windings are respectively wrapped with the insulating element.

[0018] A second aspect of this application provides a cooking appliance, including the wireless communication coil plate described in any of the preceding claims.

[0019] The wireless communication coil provided in this application has several advantages. First, compared to double-sided printed circuit boards, the communication winding, the first pad, and the second pad are all located on the same side of the substrate along the thickness direction, meaning the circuit board is a single-sided board, which reduces production costs. Second, it eliminates the need to adjust the routing of the communication winding based on the positions of the first and second pads. Instead, it allows for prioritizing improvements to the routing and manufacturing process of the communication winding, which is then connected to the first and second pads via wires. This results in a coil that provides communication functionality, excellent communication performance, and low cost, meeting market demands and enhancing market competitiveness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a wireless communication coil disk provided in some embodiments of this application;

[0021] Figure 2 A schematic diagram of the wireless communication coil disk during the production process provided for other embodiments of this application;

[0022] Figure 3 for Figure 2 The diagram shows the structure after production, where the arrows exemplarily indicate the direction of current flow.

[0023] Figure 4 This is a schematic diagram of the structure of a wireless communication coil disk provided in some other embodiments of this application.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Circuit board; 1a. First terminal; 1b. Second terminal;

[0026] 11. First pad; 12. Second pad; 13. Substrate;

[0027] 14. Communication winding; 14a. Second stacking section;

[0028] 141. First winding; 141a. First spreading segment; 142. Second winding; 142a. Second spreading segment; 142b. First straight segment;

[0029] 15. First matching line; 16. Second matching line;

[0030] 2. Conductor; 2a. First stacked segment;

[0031] 21. First conductor; 22. Second conductor; 23. Third conductor; 24. Fourth conductor;

[0032] 25. Fifth conductor; 25a. Second straight segment; 25b. Curved segment; 25c. Edge segment;

[0033] 26. The sixth conductor. Detailed Implementation

[0034] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0035] In the description of the embodiments of this application, the "first direction" orientation or positional relationship is based on Figure 1 The orientation or positional relationship shown, the "second direction" orientation or positional relationship is based on Figure 1 The orientation or positional relationship shown, the "third-direction" orientation or positional relationship is based on Figure 2 , Figure 3 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0036] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features / embodiments can form different implementation methods. To avoid unnecessary repetition, the various possible combinations of various specific technical features / embodiments in this application will not be described separately. In addition, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] It should be noted that in this application, the temperature unit "℃" refers to degrees Celsius. The radial direction is perpendicular to the thickness direction. "Inner" refers to the side radially closer to the centerline, and "outer" is the opposite direction, meaning the side radially farther from the centerline.

[0038] To facilitate understanding of the wireless communication coil provided in the embodiments of this application, the cooking utensil provided in the embodiments of this application will be described first:

[0039] This application provides a cooking appliance including a wireless communication coil plate as described in any embodiment of this application. The wireless communication coil plate has near-field communication (NFC) functionality, a short-range wireless communication method based on contactless radio frequency identification (RFID) technology. Without requiring an external power source, the communication winding 14 can interact with an induction coil that has a compatible NFC protocol, providing convenience and speed. Both the communication winding 14 and the induction coil operate at the same frequency. Thus, the cooking appliance has communication capabilities, enabling it to interact with other compatible devices, such as mobile terminals, improving the user experience.

[0040] In one embodiment, the cooking appliance includes a cooktop panel disposed above a wireless communication coil. The cooktop panel is used to place other cooking equipment, such as pots and pans, to provide support for the pots and pans.

[0041] In one embodiment, the wireless communication coil includes a power supply coil. That is, the cooking appliance has an electromagnetic heating function. Specifically, after a high-frequency current is applied to the power supply coil, it can generate an electromagnetic field. During the operation of the cooking appliance, if a magnetic cooking device is placed above the cooktop, the magnetic cooking device will resonate in the electromagnetic field and generate eddy currents. Under the action of the eddy currents, the magnetic cooking device will gradually heat up, and food will be cooked through the high-temperature magnetic cooking device.

[0042] The specific type of cooking appliance is not limited; for example, the cooking appliance may be an induction cooker or an induction stove.

[0043] In related technologies, if the coil disk uses a double-sided printed circuit board, the double-sided printed circuit board has coils patterned on both ends of the substrate 13, and the production cost of the double-sided printed circuit board is still very high.

[0044] Please see Figures 1 to 4 This application provides a wireless communication coil, including a circuit board 1. The circuit board 1 has a substrate 13, a first pad 11, a second pad 12 and a communication winding 14. The communication winding 14, the first pad 11 and the second pad 12 are all disposed on the same side of the substrate 13 along the thickness direction. At least one of the first pad 11 and the second pad 12 is connected to the communication winding 14 through a wire 2.

[0045] The first pad 11 and the second pad 12 are metallized areas for connecting the wire 2. The first pad 11 and the second pad 12 can be connected to an external circuit so that current flows through the communication winding 14 via the wire 2. The communication winding 14 can realize the communication function after being energized.

[0046] The communication winding 14 refers to a coil or coil group that achieves data transmission through electromagnetic coupling, thereby realizing communication functionality. For example, the communication winding 14 can act as a receiver. When an external device, such as a cooking appliance, is placed on the cooktop, the communication winding 14 receives a signal indicating that the cooking appliance has been placed and sends this signal to the power supply coil. Current is then passed through the power supply coil to generate a magnetic field, causing the cooking appliance to heat up. For example, the communication winding 14 can act as a transmitter. When an external device, such as a mobile terminal, approaches the cooking appliance, the communication winding 14 can send signals containing various cooking modes to the mobile terminal. This allows users to select different cooking modes based on the ingredients, enhancing the user experience. For example, the communication winding 14 can also act as a transceiver; that is, the communication winding 14 can both receive and transmit signals.

[0047] The substrate 13 has a thickness direction, and the communication winding 14, the first pad 11 and the second pad 12 are all located on the same side of the substrate 13 along the thickness direction. That is to say, the circuit board 1 is a single-sided board, and the cost of a single-sided board is half the cost of a double-sided printed circuit board, thus reducing production costs.

[0048] At least one of the first pad 11 and the second pad 12 is connected to the communication winding 14 via the wire 2. This means that: the first pad 11 can be connected to the communication winding 14 via the wire 2; the second pad 12 can be connected to the communication winding 14 via the wire 2; or both the first pad 11 and the second pad 12 can be connected to the communication winding 14 via the wire 2.

[0049] The communication winding 14 is connected to the first pad 11 and the second pad 12 via wire 2. In this way, there is no need to adjust the routing of the communication winding 14 according to the position of the first pad 11 and the second pad 12. Instead, priority can be given to improving the routing and manufacturing process of the communication winding 14, and then connecting it to the first pad 11 and the second pad 12 via wire 2. This enables it to achieve communication function, good communication effect and low cost, meet market demand and enhance market competitiveness.

[0050] The wireless communication coil provided in this application embodiment has several advantages. First, compared to double-sided printed circuit boards, the communication winding 14, the first pad 11, and the second pad 12 are all located on the same side of the substrate 13 along the thickness direction, meaning the circuit board 1 is a single-sided board, which reduces production costs. Second, there is no need to adjust the routing of the communication winding 14 according to the positions of the first pad 11 and the second pad 12. Instead, priority can be given to improving the routing and manufacturing process of the communication winding 14, and then connecting it to the first pad 11 and the second pad 12 via the wire 2. This enables it to achieve communication functionality, good communication performance, and low cost, meeting market demands and enhancing market competitiveness.

[0051] In one embodiment, circuit board 1 is a flexible circuit board. A flexible circuit board is a flexible structure, meaning it is elastic, bendable, torsionable, and deformable. Thus, the fabrication process for flexible circuit boards is mature, and production costs are lower. Furthermore, flexible circuit boards have good heat resistance, reducing the impact of high temperatures.

[0052] In one embodiment, the substrate 13 has a polyimide structure. That is, the substrate 13 is made of polyimide.

[0053] In one embodiment, the substrate 13 is a polyester film structure. That is, the substrate 13 is made of polyester film.

[0054] For example, the type of conductor 2 includes, but is not limited to, enameled wire or patch cord, etc.

[0055] In some embodiments, please refer to Figures 1 to 4 The communication winding 14 includes a first winding 141 and a second winding 142. At least a portion of the first winding 141 and at least a portion of the second winding 142 are arranged in a spiral shape and alternately. At least one of the first winding 141 and the second winding 142 is connected to the conductor 2. Specifically, the first winding 141 and the second winding 142 are electrically connected. In this way, on the one hand, the magnetic fields generated by the first winding 141 and the second winding 142 can be superimposed at their center, significantly improving the signal strength. On the other hand, the length of the communication winding 14 can be increased within a limited area while maintaining the inter-turn spacing of the communication winding 14, which is beneficial for insulation protection and heat dissipation. In addition, the bending and routing of the communication winding 14 can be reduced, thereby extending its service life.

[0056] For example, please refer to Figure 1 The first winding 141 has a first spreading segment 141a, and the second winding 142 has a second spreading segment 142a. The first spreading segment 141a and the second spreading segment 142a are arranged in a spiral shape and alternately. In one embodiment, the first spreading segment 141a and the second spreading segment 142a rotate in the same direction. Please continue reading. Figure 1 Both the first spreading segment 141a and the second spreading segment 142a can rotate clockwise. Both the first spreading segment 141a and the second spreading segment 142a can also rotate counterclockwise.

[0057] The connection of at least one of the first winding 141 and the second winding 142 to the conductor 2 means: the first winding 141 can be connected to the conductor 2; the first winding 141 can be connected to the conductor 2; or both the first winding 141 and the second winding 142 can be connected to the conductor 2.

[0058] In some embodiments, please refer to Figure 1Both the first winding 141 and the second winding 142 extend spirally outward from the first endpoint 1a in opposite directions. The first endpoint 1a is connected to the first pad 11 via a wire 2. In other words, the first winding 141 and the second winding 142 are symmetrical about the first endpoint 1a. This ensures that, on the one hand, the current flows in approximately the same direction within the first winding 141 and the second winding 142, enhancing signal transmission. On the other hand, it allows for longer wiring lengths within a limited space, making it suitable for deploying high-density communication windings 14 to enhance communication performance.

[0059] For example, please continue reading Figure 1 The beginning ends of the first winding 141 and the second winding 142 are connected at the first endpoint 1a. This reduces the number of endpoints of the communication winding 14, thereby reducing the number of required wires 2, and making the wiring of the circuit board 1 simple, clear and orderly.

[0060] In some embodiments, please refer to Figure 1 The conductor 2 includes a first conductor 21, a second conductor 22, and a third conductor 23. The second endpoint 1b of the first winding 141 and the second endpoint 1b of the second winding 142 are located on opposite sides of the first direction. The first pad 11 and the second pad 12 are located on the same side of the communication winding 14 along the second direction. The first conductor 21 connects the second endpoint 1b of the first winding 141 and the second endpoint 1b of the second winding 142. The second conductor 22 connects the first conductor 21 and the second pad 12. The third conductor 23 connects the first endpoint 1a and the first pad 11. The first direction and the second direction intersect.

[0061] For example, please refer to Figure 1 The second endpoint 1b of the first winding 141 and the second endpoint 1b of the second winding 142 are symmetrical about the first endpoint 1a. The first wire 21 connects the second endpoints 1b of the first winding 141 and the second endpoints 1b of the second winding 142. In this way, the first winding 141 and the second winding 142 form a symmetrical loop, which can cancel common-mode noise and reduce signal interference. In addition, the symmetrical routing of the first winding 141 and the second winding 142 effectively disperses stress, making the stress on the substrate 13 relatively uniform and reducing the risk of cracking of the substrate 13.

[0062] The first pad 11 and the second pad 12 are located on the same side of the communication winding 14 along the second direction. This shortens the signal return path, reduces coupling interference between the second conductor 22 and the third conductor 23, and lowers the risk of crosstalk. In addition, it facilitates the connection of the first pad 11 and the second pad 12 to external circuits.

[0063] For example, please refer to Figure 1 The second conductor 22 and the third conductor 23 both extend in parallel along the second direction.

[0064] In this embodiment, the first winding 141 and the second winding 142 are connected in series. The first direction and the second direction can intersect at an angle or perpendicularly.

[0065] In some embodiments, please refer to Figure 2 and Figure 3 The conductor 2 includes a fourth conductor 24 and a fifth conductor 25. The second endpoint 1b of the first winding 141 and the second endpoint 1b of the second winding 142 are located on opposite sides of the third direction. The first pad 11 and the second pad 12 are located on the same side of the communication winding 14 along the third direction. The fourth conductor 24 connects the first endpoint 1a and the first pad 11, and the fifth conductor 25 connects the second endpoint 1b of the first winding 141 and the second endpoint 1b of the second winding 142.

[0066] For example, please refer to Figure 3 The first pad 11, the second pad 12, the second endpoint 1b of the first winding 141, and the second endpoint 1b of the second winding 142 are spaced apart along a third direction. This facilitates the routing of the fourth conductor 24 and the fifth conductor 25.

[0067] The first pad 11 and the second pad 12 are located on the same side of the communication winding 14 along a third direction. This shortens the signal return path, reduces coupling interference between the fourth conductor 24 and the fifth conductor 25, and lowers the risk of crosstalk. In addition, it facilitates the connection of the first pad 11 and the second pad 12 to external circuits.

[0068] Please see Figure 3 The fifth conductor 25 connects the second endpoint 1b of the first winding 141 and the second endpoint 1b of the second winding 142. Thus, the first winding 141 and the second winding 142 form a symmetrical circuit, which can cancel common-mode noise and reduce signal interference. Furthermore, the centrally symmetrical routing of the first winding 141 and the second winding 142 effectively disperses stress, resulting in relatively uniform stress on the substrate 13 and reducing the risk of cracking of the substrate 13.

[0069] In this embodiment, the first winding 141 and the second winding 142 are connected in series, and the communication winding 14 is connected to the first pad 11 and the second pad 12 by only two wires 2, namely the fourth wire 24 and the fifth wire 25, thereby reducing production costs.

[0070] In some embodiments, please refer to Figure 2 and Figure 3A portion of the second winding 142 extends from the first endpoint 1a in a third direction to form a first straight segment 142b, and the fifth conductor 25 has a second straight segment 25a, which is parallel to the first straight segment 142b. It is understood that the current flow direction of the first straight segment 142b is opposite to that of the second straight segment 25a. For example, please refer to [reference needed]. Figure 3 The current in the first straight segment 142b flows approximately toward the first side of the third direction, and the current in the second straight segment 25a flows approximately toward the second side of the third direction. Thus, the magnetic field outside the first straight segment 142b is in the opposite direction to the magnetic field outside the second straight segment 25a. Consequently, the magnetic fields formed by the two segments cancel each other out, thereby reducing electromagnetic interference and enhancing signal transmission.

[0071] In some embodiments, please refer to Figure 3 The fifth conductor 25 has two curved sections 25b located at both ends of the second straight section 25a, one of which is connected to the second end point 1b of the first winding 141, and the other is connected to the second end point 1b of the second winding 142.

[0072] In this embodiment, please refer to Figure 2 and Figure 3 During the production of the wireless communication coil, the fifth conductor 25 has two side segments 25c located at both ends of the second straight segment 25a. Both side segments 25c and the second straight segment 25a are located outside the communication winding 14. This reduces interference with the communication winding 14 and lowers the risk of cross-connection. Furthermore, when the wireless communication coil is completed, the two side segments 25c are bent to form two curved segments 25b. This prevents the conductors 2 from overlapping in the curved segments 25b, thus avoiding scratches and wear on the outer surface of the curved segments 25b.

[0073] In one embodiment, please refer to Figure 2 The projection plane is a plane perpendicular to the third direction, and the projection shape of the area enclosed by the two side line segments 25c and the second straight line segment 25a is a trapezoid.

[0074] In another embodiment, a plane perpendicular to a third direction is used as the projection plane, and the projected shape of the area enclosed by the two side segments 25c and the second straight line segment 25a is rectangular. This results in a longer length for the second straight line segment 25a, increasing its parallel length with the first straight line segment 142b, further reducing electromagnetic interference and enhancing signal transmission.

[0075] In some embodiments, please refer to Figure 4The conductor 2 includes a sixth conductor 26, and the circuit board 1 includes a first connection 15 and a second connection 16. The first connection 15 is located outside the communication winding 14 and is directly connected to the first pad 11. The second connection 16 is located outside the communication winding 14 and is directly connected to the second pad 12. The first winding 141 and the second winding 142 both extend in parallel spirals from the first endpoint 1a. The second endpoint 1b of the first winding 141 and the second endpoint 1b of the second winding 142 are both connected to the second connection 16. The sixth conductor 26 connects the first connection 15 and the first endpoint 1a.

[0076] The first connection 15 and the second connection 16 do not occupy the installation space of the communication winding 14, and the first connection 15 and the second connection 16 do not interfere with the communication winding 14, reducing the risk of cross-wiring.

[0077] In this embodiment, the first winding 141 and the second winding 142 are connected in parallel. Thus, the first winding 141 and the second winding 142 rotate in the same direction. For example, the rotation direction of both the first winding 141 and the second winding 142 can be clockwise. The rotation direction of both the first winding 141 and the second winding 142 can also be counterclockwise. The current flow direction of the first winding 141 and the current flow direction of the second winding 142 are approximately the same, for example, both flow clockwise. This enhances the magnetic field coupling efficiency, making it particularly suitable for high-frequency communication or radio frequency circuits, reducing signal transmission loss, enhancing communication performance, and improving operational reliability.

[0078] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The first pad 11 and the second pad 12 are both located outside the communication winding 14. That is, the first pad 11 and the second pad 12 do not occupy the wiring space of the communication winding 14. This not only facilitates the connection of the first pad 11 and the second pad 12 to external circuits, but also prevents interference between the external circuits and the communication winding 14, resulting in a simple, clear, and orderly wiring arrangement on the circuit board 1, reducing signal interference. Furthermore, it allows for longer wiring lengths within a limited space, making it suitable for laying out high-density communication windings 14 to enhance communication performance.

[0079] In some embodiments, the wireless communication coil includes an insulating element, and the portion where the conductor 2 overlaps with the communication winding 14 is wrapped with the insulating element.

[0080] Insulating components are structures made of insulating materials that can provide insulation.

[0081] The overlapping portion of conductor 2 and communication winding 14 refers to the fact that a portion of conductor 2 and a portion of communication winding 14 are stacked along the thickness direction. For example, please refer to... Figure 1The conductor 2 has a first stacked section 2a, and the communication winding 14 has a second stacked section 14a. The first stacked section 2a and the second stacked section 14a are stacked along the thickness direction. The outer periphery of the first stacked section 2a and the outer periphery of the second stacked section 14a are both wrapped with insulating materials.

[0082] Thus, on the one hand, by stacking part of the conductor 2 and part of the communication winding 14 along the thickness direction, space can be saved to provide more installation space for the remaining communication winding 14, making the communication winding 14 neatly arranged and avoiding tangling. On the other hand, the insulation not only prevents the conductor 2 and the communication winding 14 from rubbing against each other and causing wear, but also reduces electromagnetic interference and ensures the stability of signal transmission.

[0083] In some embodiments, the cooking appliance includes an adhesive structure that bonds the communication winding 14 and the substrate 13. This enhances the stability of the connection between the communication winding 14 and the substrate 13. Furthermore, the shape and position of the communication winding 14, connected by adhesive bonding, remain essentially unchanged, ensuring that the winding spacing of the communication winding 14 meets requirements, thereby reducing signal interference and improving the operational reliability of the communication winding 14.

[0084] In one embodiment, the bonding structure is an adhesive.

[0085] In one embodiment, the adhesive structure can be a high-temperature resistant adhesive, which is an adhesive that can maintain good performance in high-temperature environments. For example, the adhesive structure can withstand temperatures of 235°C and above, meaning that the adhesive structure does not deform at temperatures of 235°C and above. Thus, the adhesive structure can still maintain good bonding performance in high-temperature environments.

[0086] In the description of this specification, the references to "an embodiment," "another embodiment," "some embodiments," "other embodiments," and "exemplary" refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wireless communication coil, characterized in that, include: A circuit board has a substrate, a first pad, a second pad, and a communication winding, wherein the communication winding, the first pad, and the second pad are all disposed on the same side of the substrate along the thickness direction. A wire, at least one of the first pad and the second pad, is connected to the communication winding via the wire.

2. The wireless communication coil disk according to claim 1, characterized in that, The communication winding includes a first winding and a second winding, at least a portion of the first winding and at least a portion of the second winding are spirally arranged and alternately spaced, and at least one of the first winding and the second winding is connected to the wire.

3. The wireless communication coil disk according to claim 2, characterized in that, Both the first winding and the second winding extend spirally outward from the first endpoint in opposite directions, and the first endpoint is connected to the first pad through the wire.

4. The wireless communication coil disk according to claim 3, characterized in that, The conductor includes a first conductor, a second conductor, and a third conductor. The second endpoints of the first winding and the second winding are located on opposite sides of a first direction. The first pad and the second pad are located on the same side of the communication winding along a second direction. The first conductor connects the second endpoints of the first winding and the second winding. The second conductor connects the first conductor and the second pad. The third conductor connects the first endpoint and the first pad. The first direction and the second direction intersect.

5. The wireless communication coil disk according to claim 3, characterized in that, The conductors include a fourth conductor and a fifth conductor, the second endpoints of the first winding and the second endpoints of the second winding are located on opposite sides of the third direction, and the first pad and the second pad are located on the same side of the communication winding along the third direction; The fourth wire connects the first endpoint and the first pad, and the second endpoint of the first winding and the second endpoint of the second winding are connected to the second pad via the fifth wire.

6. The wireless communication coil disk according to claim 5, characterized in that, A portion of the second winding extends from the first endpoint along the third direction to form a first straight segment, and the fifth conductor has a second straight segment that is parallel to the first straight segment.

7. The wireless communication coil disk according to claim 6, characterized in that, The fifth conductor has two curved segments located at the two ends of the second straight segment, one of which is connected to the second end of the first winding, and the other of which is connected to the second end of the second winding.

8. The wireless communication coil disk according to claim 3, characterized in that, The conductor includes a sixth conductor, and the circuit board includes a first connection and a second connection. The first connection is located outside the communication winding and is directly connected to the first pad. The second connection is located outside the communication winding and is directly connected to the second pad. The first winding and the second winding both extend in parallel spirals from the first endpoint. The second endpoints of the first winding and the second winding are both connected to the second connection. The sixth conductor connects the first connection and the first endpoint.

9. The wireless communication coil disk according to claim 1, characterized in that, Both the first pad and the second pad are located on the outside of the communication winding.

10. The wireless communication coil disk according to claim 1, characterized in that, The wireless communication coil includes an insulating component, and the portions of the conductors that overlap with the communication windings are respectively wrapped with the insulating component.

11. A cooking utensil, characterized in that, Includes the wireless communication coil disk as described in any one of claims 1 to 10.

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