Electronic device

Abstract

This application discloses an electronic device belonging to the field of magnetic charging technology. The electronic device includes: a first sensing module for acquiring a first proximity signal and a motion state signal of the electronic device; a wireless charging coil; and a first control drive circuit coupled to the first sensing module and the wireless charging coil, for outputting a first current to the wireless charging coil based on the first proximity signal and the motion state signal. The first current generates a first magnetic field. The electronic device is one of a charging device and a device being charged, and the first magnetic field causes the wireless charging coil to repel the other of the charging device and the device being charged.

Description

Technical Field

[0001] This application belongs to the field of magnetic charging technology, specifically relating to an electronic device. Background Technology

[0002] Magnetic charging, as a mainstream wireless charging solution, effectively enhances the user experience by enabling precise alignment of charging devices. Current magnetic charging technology primarily relies on neodymium iron boron permanent magnet arrays for positioning and attraction. These arrays provide approximately 10N of magnetic force, ensuring precise alignment between charging coils and guaranteeing charging stability. However, this strong magnetic force requires users to exert considerable pulling force to remove the device, which is inconvenient and can easily lead to device detachment or damage. This is particularly unfriendly to the elderly, those with hand joint disorders, and other vulnerable groups. Summary of the Invention

[0003] The purpose of this application is to provide an electronic device that can solve the technical problem of inconvenience in retrieving the device being charged.

[0004] This application provides an electronic device, including: a first sensing module for acquiring a first proximity signal and a motion state signal of the electronic device; a wireless charging coil; and a first control drive circuit coupled to the first sensing module and the wireless charging coil, for outputting a first current to the wireless charging coil according to the first proximity signal and the motion state signal, the first current being used to generate a first magnetic field, the electronic device being one of a charging device and a device being charged, and the first magnetic field being used to cause the wireless charging coil to repel the other of the charging device and the device being charged.

[0005] In this embodiment, by collecting a first proximity signal and a motion state signal of the electronic device through a first sensing module, the user's intention to retrieve the device can be accurately identified, providing a basis for adjusting the magnetic attraction force. The electronic device also employs a wireless charging coil. Without adding complex mechanical structures, the wireless charging coil can be used for wireless charging and, under the action of a first current output by the first control drive circuit, generate a first magnetic field. If the electronic device is a charging device, the first magnetic field will cause the wireless charging coil and the device being charged to repel each other; if the electronic device is the device being charged, the first magnetic field will cause the wireless charging coil and the charging device to repel each other. This repulsion can offset part of the magnetic attraction between the original first and second magnetic components in the charging and charged devices, thereby significantly reducing the pulling force required for the user to remove the device being charged. While ensuring charging stability, it greatly improves the convenience and safety of retrieving the device, which is beneficial to improving the user experience for special groups such as the elderly and patients with hand joint diseases. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of a wireless charging application scenario in related technologies;

[0007] Figure 2 This is a schematic diagram of the circuit structure of the electronic device proposed in the embodiments of this application;

[0008] Figure 3 This is a structural block diagram of the electronic device proposed in the embodiments of this application;

[0009] Figure 4 This is a schematic diagram of the structure of the electronic device proposed in the embodiments of this application;

[0010] Figure 5 This is a flowchart illustrating the device retrieval mode proposed in an embodiment of this application;

[0011] Figure 6 This is a schematic flowchart of the magnetic enhancement mode proposed in the embodiments of this application;

[0012] Figure 7 This is a schematic diagram of the structure of the nanocrystalline soft magnetic sheet proposed in the embodiments of this application;

[0013] Figure 8 This is a schematic diagram of the structure of the pyrolytic graphite sheet proposed in the embodiments of this application.

[0014] Reference numerals: 1. Device being charged; 2. Charging device; 110. Electronic device; 112. Top-angle antenna; 120. First sensing module; 121. Absorption rate sensor; 122. Inertial measurement sensor; 1221. Gyroscope; 1222. Accelerometer; 130. Wireless charging coil; 140. First control drive circuit; 141. Main controller; 142. Switching circuit; 143. Power supply circuit; 150. Interaction module; 160. Nanocrystalline soft magnetic sheet; 170. Pyrolytic graphite sheet. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] In related technologies, such as Figure 1 As shown, the device being charged 1 is provided with a first magnetic component, and the charging device 2 is provided with a second magnetic component. Through the magnetic attraction between the first magnetic component and the second magnetic component, the charging device 2 achieves a magnetic connection with the device being charged 1.

[0018] The electronic device 110 provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0019] like Figures 2 to 4 As shown, this application proposes an electronic device 110, comprising:

[0020] The first sensing module 120 is used to acquire the first proximity signal and the motion state signal of the electronic device 110;

[0021] Wireless charging coil 130;

[0022] The first control drive circuit 140 is coupled to the first sensing module 120 and the wireless charging coil 130 respectively. It is used to output a first current to the wireless charging coil 130 according to the first proximity signal and the motion state signal. The first current is used to generate a first magnetic field. The electronic device is one of the charging device and the device being charged. The first magnetic field is used to make the wireless charging coil 130 repel the other of the charging device and the device being charged.

[0023] In the above embodiments, by collecting the first proximity signal and the motion state signal of the electronic device 110 through the first sensing module 120, the user's intention to take the device can be accurately identified, providing a basis for judgment on the adjustment of the magnetic attraction force. The electronic device 110 also adopts a wireless charging coil 130. Without adding an additional complex mechanical structure, the wireless charging coil 130 can be used to realize wireless charging and generate a first magnetic field under the action of the first current output by the first control drive circuit 140. If the electronic device 110 is a charging device, the first magnetic field will cause the wireless charging coil 130 and the device being charged to repel each other; if the electronic device 110 is a device being charged, the first magnetic field will cause the wireless charging coil 130 and the charging device to repel each other. This repulsion can offset part of the magnetic attraction force between the original first magnetic component and the second magnetic component in the charging device and the device being charged, thereby significantly reducing the pulling force required for the user to remove the device being charged. While ensuring charging stability, it greatly improves the convenience of taking the device and the safety of use, which is beneficial to improving the user experience of special groups such as the elderly and patients with hand joint diseases.

[0024] For example, the electronic device 110 can be a smartphone, smartwatch, wireless earphone box, tablet computer, or other charging device, or it can be a charging dock, magnetic charging bracket, in-vehicle wireless charging panel, desktop fast charging dock, all-in-one wireless charging base, magnetic fast charging power bank, or other charging device.

[0025] For example, the first sensing module 120 may include at least one of a specific absorptivity sensor 121, a distance sensor, and an infrared proximity sensor, for acquiring a first proximity signal. The first sensing module 120 may also include a gravity sensor, an attitude sensor, etc., for acquiring motion state signals.

[0026] For example, the first magnetic element or the second magnetic element is a neodymium iron boron permanent magnet array arranged in a ring on the inner side of the back cover of the electronic device 110, with a basic magnetic attraction force of 10N; the wireless charging coil 130 is a circular enameled copper wire coil with a diameter of 50mm, 25 turns, and a wire diameter of 0.2mm.

[0027] For example, the first control drive circuit 140 can reuse the main processor of the device being charged 1 and has built-in dedicated control algorithm firmware. When the user intends to retrieve the device, it controls the wireless charging coil 130 to generate a first current to offset part of the magnetic attraction force, reducing the total magnetic attraction force to 6N to 8N, making it convenient for the user to retrieve the device.

[0028] like Figure 2 As shown, in some embodiments of this application, the first sensing module 120 includes:

[0029] The specific absorption rate sensor 121 is coupled to the first control drive circuit 140. The specific absorption rate sensor 121 is connected to multiple apex antennas 112 of the electronic device 110 for acquiring the first proximity signal.

[0030] An inertial measurement sensor 122 is coupled to a first control drive circuit 140 and is used to acquire motion state signals.

[0031] In the above embodiments, the electronic device 110 sets the first sensing module 120 as a specific absorption rate sensor 121 and an inertial measurement sensor 122. The specific absorption rate sensor 121 is coupled to the first control drive circuit 140, and the specific absorption rate sensor 121 is connected to multiple apex antennas 112 of the electronic device 110. This enables accurate acquisition of the first proximity signal. The multiple apex antennas 112 expand the human proximity detection range, improve the accuracy and comprehensiveness of human proximity signal acquisition, and avoid missed or false judgments caused by single-channel detection. The inertial measurement sensor 122 is coupled to the first control drive circuit 140, enabling accurate acquisition of the motion state signal of the electronic device 110. This provides more accurate motion data support for the first control drive circuit 140 to judge the user's intention to take the device, further improving the accuracy of the intention recognition. This ensures that the magnetic adjustment is triggered only when the user actually takes the device, avoiding charging instability caused by false triggering. At the same time, the structure of the first sensing module 120 is refined, making the acquisition of the first proximity signal and motion state signal more targeted and reliable.

[0032] For example, the specific absorption rate sensor 121 has multiple channels, each of which is connected to a apex antenna 112 to improve the sensitivity and accuracy of human proximity detection.

[0033] For example, the specific absorption rate sensor 121 and the inertial measurement sensor 122 can be sensors built into the electronic device 110. The specific absorption rate sensor 121 communicates with the first control and drive circuit 140 through the I2C bus (Inter-Integrated Circuit). The four channels are respectively connected to the four apex antennas 112 of the electronic device 110 to realize 360° human proximity detection. The inertial measurement sensor 122 transmits motion data to the first control and drive circuit 140 through the SPI bus (Serial Peripheral Interface). The data output frequency can be 100Hz, which can acquire the motion status signal of the electronic device 110 in real time. The specific absorption rate sensor 121 and the inertial measurement sensor 122 cooperate with each other to accurately identify the user's intention to take the device and avoid false triggering. Moreover, the first sensing module 120 reuses the built-in sensor of the electronic device 110 without adding new hardware, effectively saving the design and manufacturing costs of the device.

[0034] like Figure 2 As shown, in some embodiments of this application, the inertial measurement sensor 122 includes:

[0035] The gyroscope 1221 is coupled to the first control drive circuit 140 and is used to acquire the rotation status signal of the electronic device 110.

[0036] Accelerometer 1222 is coupled to the first control drive circuit 140 and is used to acquire the linear motion state signal of electronic device 110;

[0037] The motion state signals include rotational motion state signals and linear motion state signals.

[0038] In the above embodiment, the inertial measurement sensor 122 includes a gyroscope 1221 and an accelerometer 1222. The gyroscope 1221 is coupled to the first control drive circuit 140 and can accurately acquire the rotational state signal of the electronic device 110, capturing the rotational actions of the electronic device 110, such as flipping or rotating when the user takes the device. The accelerometer 1222 is coupled to the first control drive circuit 140 and can accurately acquire the linear motion state signal of the electronic device 110, capturing the linear actions of the electronic device 110 such as translation and shaking. At the same time, it is clear that the motion state signal includes rotational state signal and linear motion state signal, which refines the composition of the motion state signal. This allows the first control drive circuit 140 to more comprehensively and accurately determine the motion state of the electronic device 110 based on the two different types of motion signals, thereby more accurately identifying the user's intention to take the device, reducing misjudgments caused by the detection of a single motion signal, further improving the accuracy and reliability of magnetic adjustment, and providing more detailed data support for the subsequent determination of the device taking state.

[0039] For example, the gyroscope 1221 is a three-axis gyroscope, coupled to the first control drive circuit 140 via an SPI bus. The first preset rotation threshold is 0.5 rad / s, and the stationary state is determined by an angular velocity not greater than 0.5 rad / s, capturing the rotational motion of the device. The accelerometer 1222 is a three-axis accelerometer, with a first preset linear motion threshold corresponding to an acceleration of 0.05g. The stationary state is determined by a linear acceleration not greater than 0.05g, capturing the linear motion of the device. The signals obtained by both provide accurate data support for determining the device's status, without the need for additional motion sensors.

[0040] In some embodiments of this application, the first control drive circuit 140 is used for:

[0041] Receive the first proximity signal;

[0042] Receives rotational state signals and linear motion state signals;

[0043] If, within a first preset time period, the first proximity signal is less than or equal to a preset proximity threshold, the rotation state signal is less than or equal to a first preset rotation threshold, and the linear motion state signal is less than or equal to a first preset linear motion threshold, a first current is output to the wireless charging coil 130.

[0044] In the above embodiments, the electronic device 110, by clarifying the specific working process of the first control drive circuit 140, enables the first control drive circuit 140 to receive a first proximity signal, a rotation state signal, and a linear motion state signal. By setting a first preset time, and when the first proximity signal is less than or equal to a preset proximity threshold, the rotation state signal is less than or equal to a first preset rotation threshold, and the linear motion state signal is less than or equal to a first preset linear motion threshold within the first preset time, it is determined that the device being charged 1 has entered the device retrieval state. The first control drive circuit 140 outputs a first current to the wireless charging coil 130. In this way, the triggering conditions of the device retrieval state can be accurately defined, avoiding false triggering caused by instantaneous signal fluctuations. It ensures that magnetic adjustment is only triggered when the user has a continuous intention to retrieve the device and the action is stable. This not only ensures the convenience of retrieving the device but also avoids the impact of false adjustment on charging stability in the non-retrieval state, making magnetic adjustment more targeted and reliable, and further optimizing the device retrieval experience.

[0045] For example, the first preset time is 50ms, the preset proximity threshold is 5cm, the first preset rotation threshold is 0.5rad / s, and the first preset linear motion threshold is 0.05g; when the signals received by the first control drive circuit 140 for 50ms all meet the threshold conditions, it is determined to be in the device take-up state and the wireless charging coil 130 is controlled to generate the first current; if any signal exceeds the threshold, it is not determined, thus filtering out instantaneous interference and avoiding false triggering.

[0046] In some embodiments of this application, the first control drive circuit 140 is further configured to:

[0047] When the first current is output, if the first proximity signal is greater than a preset proximity threshold, or the rotation state signal is greater than a first preset rotation threshold, or the linear motion state signal is greater than a first preset linear motion threshold, then after a first preset delay, the output of the first current to the wireless charging coil 130 is stopped.

[0048] In the above embodiments, the first preset delay, based on the aforementioned settings, enables automatic reset of the magnetic force adjustment, avoiding energy waste caused by the first control drive circuit 140 continuously outputting the first current to the wireless charging coil 130, and preventing continuous repulsion from affecting the adsorption stability of the charged device 1 and the charging device 2. The setting of the first preset delay can avoid frequent start-stop of the wireless charging coil 130 due to instantaneous signal fluctuations, ensuring the continuity of the device retrieval action. When the first proximity signal is detected to be greater than the preset proximity threshold, or the rotation state signal is greater than the first preset rotation threshold, or the linear motion state signal is greater than the first preset linear motion threshold, it indicates that the user has started to retrieve the device, completed the retrieval, or abandoned the retrieval. After the first preset delay, the output of the first current stops, allowing the charged device 1 and the charging device 2 to return to the normal adsorption state, balancing the convenience of retrieval and the charging stability, and improving the practicality of the device.

[0049] For example, the first preset delay is 2s. When the first control drive circuit 140 detects that any signal does not meet the corresponding threshold condition, it controls the wireless charging coil 130 to stop generating the first current after a 2s delay. Within the first preset delay, if the first proximity signal is less than or equal to the preset proximity threshold, the rotation state signal is less than or equal to the first preset rotation threshold, and the linear motion state signal is less than or equal to the first preset linear motion threshold, the current continues to be generated to ensure smooth device retrieval.

[0050] like Figure 5 As shown, the process for picking up the device in this application includes the following steps:

[0051] S110: Receives the first proximity signal, the rotation status signal, and the linear motion signal;

[0052] S111: When the first proximity signal is less than or equal to a preset proximity threshold, the rotation state signal is less than or equal to a first preset rotation threshold, and the linear motion state signal is less than or equal to a first preset linear motion threshold within a first preset time period, the first current is output to the wireless charging coil.

[0053] S112: When outputting the first current, if the first proximity signal is greater than a preset proximity threshold, or the rotation state signal is greater than a first preset rotation threshold, or the linear motion state signal is greater than a first preset linear motion threshold, then after a first preset delay, the output of the first current to the wireless charging coil is stopped.

[0054] It is understandable that the entity performing the above steps may be the first control drive circuit 140.

[0055] For example, specifically, the device retrieval process of this application is as follows: Process begins, S10: The device to be charged is placed on the charging device, and the basic magnetic attraction force enables stable charging; The device to be charged 1 is placed on the charging device 2, and magnetic attraction is achieved through the basic magnetic attraction force between the device to be charged 1 and the charging device 2, and the charging device 2 stably charges the device to be charged 1. S11: Within a first preset time period, the rotational motion state signal is less than or equal to the first preset rotation threshold, the linear motion state signal is less than or equal to the first preset linear motion threshold, and the first proximity signal is less than or equal to the preset proximity threshold. The first sensing module 120 acquires the first proximity signal, rotational motion state signal, and linear motion state signal in real time and determines whether the intention to acquire the device is met. If, within the first preset time period, the rotational motion state signal is continuously less than or equal to the first preset rotation threshold, the linear motion state signal is less than or equal to the first preset linear motion threshold, and the first proximity signal is less than or equal to the preset proximity threshold, it is determined that the intention to acquire the device is met, and S13 is executed. If, within the first preset time period, the rotational motion state signal is not continuously less than or equal to the first preset rotation threshold, the linear motion state signal is not less than or equal to the first preset linear motion threshold, and the first proximity signal is not less than or equal to the preset proximity threshold, S12 is executed. S12: Avoid false triggering and maintain basic magnetic attraction. In the case of avoiding false triggering, the basic magnetic attraction between the basic charging device 2 and the device being charged 1 is maintained, and S10 is returned to perform stable charging of the device being charged 1 by the charging device 2. S13: Output a first current to offset part of the basic magnetic attraction force; after determining that the intention to retrieve the device is met, the first control drive circuit 140 outputs a first current to the wireless charging coil 130. The first current can generate a first magnetic field. The first magnetic field can generate a repulsive force between the charging device 2 and the device being charged 1, thereby offsetting part of the basic magnetic attraction force and reducing the magnetic attraction force between the charging device 2 and the device being charged 1, thus making it easier for the user to retrieve the device. S14: If the rotational motion state signal is greater than the first preset rotation threshold, or the linear motion state signal is greater than the first preset linear motion threshold, or the first proximity signal is greater than the preset proximity threshold, maintain the first preset delay; if any of the above situations does not continue to occur until the end of the first preset delay, it is determined as no, return to S13, and continue to maintain the output of the first current; if any of the above situations continue to occur and are maintained until the end of the first preset delay, it is determined as yes, and execute S15; S15: Stop outputting the first current; the first control drive circuit 140 stops outputting the first current to the wireless charging coil 130 to avoid the repulsive force generated by the first current affecting the stability of the device retrieval operation, and at the same time avoids the waste of power caused by the continuous output of the first current, and restores the charging device 1 and the charging device 2 to the normal adsorption state, ensuring the stability and reliability of the charging process, and the process ends.

[0056] In some embodiments of this application, the first control drive circuit 140 is further configured to:

[0057] Within a second preset time period, if the first proximity signal is greater than a preset proximity threshold, and if the rotation state signal is greater than a first preset rotation threshold, or the linear motion state signal is greater than a first preset linear motion threshold, a second current is output to the wireless charging coil 130. The second current is used to generate a second magnetic field in the wireless charging coil 130. The electronic device is one of the charging device and the device being charged. The second magnetic field is used to make the wireless charging coil 130 attract the other of the charging device and the device being charged. The first current and the second current are in opposite directions.

[0058] In the above embodiments, a first proximity signal greater than a preset proximity threshold ensures that the human body is kept away from the electronic device. A rotation state signal greater than a first preset rotation threshold, or a linear motion state signal greater than a first preset linear motion threshold, indicates that the electronic device is in a rotating or moving state. This indicates that there is a risk of separation between the charging device and the non-charging device. At this time, a magnetic enhancement mode can be entered. A second current is output to the wireless charging coil 130 through the first control drive circuit 140. The second current generates a second magnetic field. If the electronic device 110 is the charging device 2, the second magnetic field will cause the wireless charging coil 130 and the device being charged 1 to attract each other. If the electronic device 110 is the device being charged 1, the second magnetic field will cause the wireless charging coil 130 and the charging device 2 to attract each other. This can achieve active enhancement of the magnetic attraction between the charging device 2 and the device being charged 1, meet the adsorption requirements in special scenarios, and improve the applicability and safety of the device.

[0059] For example, the second preset time is 50ms, the preset proximity threshold is 5cm, the first preset rotation threshold is 0.5rad / s, and the first preset linear motion threshold is 0.05g. Within 50ms, if the first proximity signal is greater than 5cm, or if the rotation state signal is greater than 0.5rad / s, or the linear motion state signal is greater than 0.05g, the first control drive circuit 140 determines that it has entered the magnetic force enhancement state, controls the wireless charging coil 130 to generate a second current, and superimposes the 10N basic magnetic attraction force of the first magnetic component or the second magnetic component to increase the total magnetic attraction force to 12N to 14N, which is suitable for scenarios such as vehicle mounting and self-driving shooting, and prevents the device from falling off.

[0060] In some embodiments of this application, the first control drive circuit 140 is further configured to:

[0061] When the output of the second current reaches the second preset delay, or when the first sensing module detects that the linear motion state signal is greater than the second preset linear motion threshold and the rotation state signal is greater than the second preset rotation threshold, the output of the second current to the wireless charging coil 130 is stopped.

[0062] In the above embodiments, the first control drive circuit 140 is further configured to stop the output of the second current when the duration of the second current output reaches the second preset delay, or when the first sensing module detects that the linear motion state signal is greater than the second preset linear motion threshold and the rotation state signal is greater than the second preset rotation threshold. This enables the automatic termination of the magnetic enhancement state, avoids energy waste caused by the continuous generation of the second current, and prevents excessive magnetic attraction from affecting the ease of subsequent device retrieval. The setting of the second preset delay time ensures that the magnetic enhancement state lasts for a sufficient duration to meet the user's needs. When the first sensing module detects that the linear motion state signal is greater than the second preset linear motion threshold and the rotation state signal is greater than the second preset rotation threshold, it can determine that the charging device 2 and the charged device 1 are in a separated state. At this time, stopping the output of the second current can terminate the ineffective magnetic enhancement in time, further optimize the energy consumption performance of the device, make the magnetic enhancement mode more reasonable and practical, take into account the adsorption stability and the ease of device retrieval, and avoid the inconvenience caused by the inability of the magnetic enhancement mode to terminate automatically.

[0063] For example, the second preset delay time is 30 minutes. After entering the magnetic force enhancement mode, if the device is not detected to be separated from the base within 30 minutes, the second current will be automatically stopped and the basic magnetic attraction force of 10N will be restored. If the detected linear motion state signal is greater than the second preset linear motion threshold and the rotation state signal is greater than the second preset rotation threshold, it will stop immediately to avoid energy waste and no-load heating, and achieve timeout protection.

[0064] like Figure 6 As shown, the magnetic enhancement mode process of this application includes the following steps:

[0065] S120: Receives the first proximity signal, the rotation status signal, and the linear motion signal;

[0066] S121: Within a second preset time period, if the first proximity signal is greater than a preset proximity threshold, and if the rotation state signal is greater than a first preset rotation threshold or the linear motion state signal is greater than a first preset linear motion threshold, then a second current is output to the wireless charging coil. The second current is used to generate a second magnetic field in the wireless charging coil. The electronic device is one of the charging device and the device being charged. The second magnetic field is used to make the wireless charging coil attract the other of the charging device and the device being charged. The first current and the second current are in opposite directions.

[0067] S122: When the output of the second current reaches the second preset delay, or when the first sensing module detects that the linear motion state signal is greater than the second preset linear motion threshold and the rotation state signal is greater than the second preset rotation threshold, stop outputting the second current to the wireless charging coil.

[0068] It is understandable that the entity performing the above steps may be the first control drive circuit 140.

[0069] For example, the magnetic force enhancement mode process of this application is as follows: Process begins, S20: The device to be charged is placed on the charging device, with basic magnetic attraction, stabilizing charging; the device to be charged 1 is placed on the charging device 2, achieving magnetic attraction between the device to be charged 1 and the charging device 2, and the charging device 2 stably charges the device to be charged 1. Magnetic force enhancement can be manually triggered via S21: S21: Manual control via the interaction module; the user can manually control the first drive control circuit to output a second current via the interaction module 150, executing S23. Magnetic enhancement can also be automatically triggered via S22. S22: Within a second preset time period, if the first proximity signal is greater than a preset proximity threshold, the rotation state signal is greater than a first preset rotation threshold or the linear motion state signal is greater than a first preset linear motion threshold. The first sensing module 120 acquires the first proximity signal, rotation motion state signal, and linear motion state signal in real time and determines whether the anti-fall scenario is met. If, within the second preset time period, the first proximity signal is continuously greater than the preset proximity threshold and the rotation state signal is greater than the first preset rotation threshold or the linear motion state signal is greater than the first preset linear motion threshold, it is determined to be yes, and the anti-fall scenario is met, and S23 is executed. If, within the second preset time period, the first proximity signal is not continuously greater than the preset proximity threshold and the rotation state signal is not greater than the first preset rotation threshold or the linear motion state signal is not greater than the first preset linear motion threshold, S20 is executed to continue maintaining stable charging of the charging device 1 by the charging device 2. S23: Output a second current to enhance magnetic attraction; after determining that the anti-fall scenario is met, the first control drive circuit 140 outputs a second current to the wireless charging coil 130. The second current can generate a second magnetic field, which can create an attractive force between the charging device 2 and the device being charged 1, thereby enhancing the basic magnetic attraction and improving the magnetic attraction between the charging device 2 and the device being charged 1. This can prevent the device being charged 1 from slipping off the charging device 2 and ensure charging and placement stability. S24: The second current continuously reaches the second preset delay, or the rotational motion state signal is greater than the second preset rotation threshold and the linear motion state signal is greater than the second preset linear motion threshold; if at least one of the following conditions is not met, and the second preset delay is reached, then return to S23 and continue to output the second current.If at least one of the following conditions is continuously met and the second current reaches the second preset delay, or the rotational motion state signal is greater than the second preset rotation threshold and the linear motion state signal is greater than the second preset linear motion threshold, and the second preset delay is maintained, then it is determined to be yes, and S25 is executed; S25: Stop outputting the second current; The first control drive circuit 140 stops outputting the second current to the wireless charging coil 130 to avoid the attraction force generated by the second current from continuing to cause energy waste, and at the same time restores the charging device 1 and the charging device 2 to the normal adsorption state, taking into account both the safety of preventing drop and the charging stability, improving the practicality of the device, and the process ends.

[0070] like Figure 3 As shown, in some embodiments of this application, the electronic device 110 further includes:

[0071] The interaction module 150 is used to control the first control drive circuit 140, so that the first control drive circuit 140 outputs a second current to the wireless charging coil.

[0072] The second current is used to generate a second magnetic field in the wireless charging coil 130. The electronic device is one of the charging device and the device being charged. The second magnetic field is used to make the wireless charging coil 130 attract the other of the charging device and the device being charged. The direction of the second current is opposite to the direction of the first current.

[0073] The interaction module 150 is also used to output a control duration signal to the first control drive circuit 140, and the first control drive circuit 140 is used to determine the duration of outputting the second current based on the control duration signal.

[0074] In the above embodiments, the electronic device 110 adds an interaction module 150, which controls the output of the second current by the first control drive circuit 140, thereby enabling manual control of the magnetic enhancement mode to meet the user's personalized needs. The interaction module 150 can also output a control duration signal to the first control drive circuit 140 to control the duration of the second current. The first control drive circuit 140 can output the second current within a fixed duration according to the control duration signal, thereby enabling the magnetic enhancement mode to be turned on for a fixed duration. This allows the user to choose whether to turn on the magnetic enhancement state and the duration of the magnetic enhancement according to their own usage scenario, avoiding the problem that automatic control cannot meet the needs of all scenarios, and further improving the flexibility and applicability of the device. The setting of the interaction module 150 makes the operation of the device more user-friendly. Users can manually turn on the magnetic enhancement and set the duration according to actual needs (such as long-term use in a car or outdoor carrying), taking into account both ease of use and personalized needs.

[0075] For example, the interaction module 150 can reuse the touch screen and system settings interface of the electronic device 110 without adding new hardware. It provides a magnetic enhancement mode switch, a duration customization interface (default 30 minutes), and a gear selection function. Users can manually control the magnetic enhancement through the touch screen, system settings, or supporting application software.

[0076] In some embodiments of this application, the interaction module 150 is further configured to output a second gear control signal to the first control drive circuit 140, and the first control drive circuit 140 is configured to determine different magnitudes of the second current to be output based on the second gear control signal.

[0077] In the above embodiment, the electronic device 110 outputs a second-level control signal to the first control drive circuit 140 through the setting interaction module 150, thereby controlling the first control drive circuit 140 to output different magnitudes of second current, thereby realizing graded adjustment of the magnetic force enhancement mode to meet the magnetic attraction needs of users in different scenarios; different second currents correspond to different magnetic force enhancement levels. The larger the second current, the stronger the attraction between the wireless charging coil 130 and the charging device 2. Users can select the appropriate level according to actual needs (such as slight shaking scenarios or violent shaking scenarios), further improving the flexibility and applicability of the device, avoiding the problem that a single magnetic force enhancement intensity cannot meet the needs of diverse scenarios, while making the magnetic force adjustment more precise, taking into account both adsorption stability and ease of use.

[0078] For example, the interaction module 150 can also output a first-level control signal to the first control drive circuit 140. The first control drive circuit 140 is used to determine the output of a first current of different magnitudes according to the first-level control signal. In order to meet the magnetic force reduction requirements of the device retrieval scenario, the first control drive circuit 140 adjusts the magnitude of the first current according to the first-level control signal to realize the graded adjustment of the degree of magnetic force reduction. For example, it can be divided into two levels: weak reduction and strong reduction. The first current is 150mA, and the total magnetic force is reduced from the basic 10N to 8N, which is suitable for users with normal hand strength to retrieve the device. The strong reduction corresponds to the output of a first current of 300mA, and the total magnetic force is reduced from the basic 10N to 6N, which is suitable for special groups such as the elderly and patients with hand joint diseases to retrieve the device, further improving the user-friendliness of special groups and taking into account the retrieval needs of different users.

[0079] like Figure 2 As shown, in some embodiments of this application, the first control drive circuit 140 includes a main controller 141, a switching circuit 142, and a power supply circuit 143; the main controller 141 is coupled to the first sensing module 120 and the switching circuit 142, the switching circuit 142 is coupled to the power supply circuit 143, and the power supply circuit 143 is coupled to the wireless charging coil 130.

[0080] The main controller 141 is used for:

[0081] Receive the signal output by the first sensing module 120 and generate a control signal;

[0082] The conduction direction of the switch circuit 142 is controlled based on the control signal;

[0083] Depending on the conduction direction, the control power circuit 143 outputs a first current or a second current to the wireless charging coil 130.

[0084] In the above embodiments, the electronic device 110 configures the first control drive circuit 140 as a main controller 141, a switching circuit 142, and a power supply circuit 143. The main controller 141 is coupled to the first sensing module 120 and the switching circuit 142, the switching circuit 142 is coupled to the power supply circuit 143, and the power supply circuit 143 is coupled to the wireless charging coil 130. This makes the control of the first control drive circuit 140 more precise and stable. The main controller 141 is used to receive the signal output by the first sensing module 120 and generate a control signal, which can realize the processing of the detection signal and the generation of control commands. Based on the control signal, the conduction direction of the switching circuit 142 can be controlled to switch the current direction, thereby controlling the wireless charging coil 130 to generate a first current or a second current. According to the conduction direction, the power supply circuit 143 outputs a current in the corresponding direction to the wireless charging coil 130, which can ensure the stability and accuracy of the output current, avoid the instability of magnetic force adjustment caused by current fluctuations, further improve the reliability and adjustment accuracy of the device, and ensure the smooth realization of magnetic force adjustment.

[0085] For example, the main controller 141 can reuse the main processor of the device being charged 1 and has built-in dedicated control algorithm firmware. The switching circuit 142 is based on the existing wireless charging chip and can be extended, such as using an H-bridge switching circuit, a full-bridge circuit, or a half-bridge circuit. The power supply circuit 143 can use an integrated constant current chip. The main controller 141 receives the signal from the sensing module through the corresponding bus and controls the switching circuit 142 to switch the conduction direction. The power supply circuit 143 can use a pulse width modulation constant current source to output a DC current of 50mA to 300mA to achieve precise control of the current direction and magnitude, adapting to the time-division multiplexing requirements.

[0086] For example, the power supply circuit 143 may also employ a DC constant current source, an adjustable power supply, a linear power supply, etc.

[0087] In some embodiments of this application, the power supply circuit 143 has multiple current output levels, each of which is used to output a different magnitude of current.

[0088] In the above embodiments, the electronic device 110 sets the power supply circuit 143 to have multiple current output levels, and each current output level is used to output a different magnitude of current, which can realize flexible adjustment of the first current or the second current. Combined with the selection of the magnetic force enhancement level, it can meet the different magnetic force enhancement needs of users. Different current output levels correspond to different current magnitudes, and thus correspond to different attraction forces. The power supply circuit 143 can output the current of the corresponding level according to the control command of the first control drive circuit 140, ensuring the stability and accuracy of the current output, avoiding poor magnetic force enhancement effect caused by excessive or insufficient current, further improving the accuracy and flexibility of magnetic force adjustment, enabling the device to adapt to more diverse usage scenarios, and taking into account both adsorption stability and ease of use.

[0089] For example, the power supply circuit 143 has two core output levels: 150mA and 300mA, with a current adjustment range of 50mA to 300mA. The current can be switched by the first control drive circuit 140. When the second current (magnetic force enhancement) is applied, 150mA corresponds to the low level (total magnetic attraction force 12N), and 300mA corresponds to the high level (total magnetic attraction force 14N). When the first current (magnetic force reduction) is applied, 150mA corresponds to the weak level (total magnetic attraction force 8N), and 300mA corresponds to the strong level (total magnetic attraction force 6N), ensuring stable current output and precise magnetic force adjustment, while taking into account the graded requirements of magnetic force enhancement and reduction.

[0090] In some embodiments of this application, the wireless charging coil 130 has a charging mode and an excitation mode;

[0091] In the charging mode, the wireless charging coil 130 is used to receive electrical energy from the paired charging device or to output electrical energy to the paired charging device; in the excitation mode, the wireless charging coil 130 is used to receive the first current or the second current output by the power supply circuit 143.

[0092] In the above embodiments, the electronic device 110 sets the wireless charging coil 130 to have a charging mode and an excitation mode. In the charging mode, it receives electrical energy from the paired charging device 2 or outputs electrical energy to the paired charging device 1. In the excitation mode, the wireless charging coil 130 is used to receive the first current or the second current output by the power supply circuit 143. The two working modes of the wireless charging coil 130 are clearly defined, realizing the separation and coordination of the wireless charging function and the magnetic force adjustment function. The charging mode ensures the normal operation of wireless charging, and the excitation mode ensures the smooth realization of magnetic force adjustment. The two modes do not interfere with each other, avoiding functional abnormalities caused by the mutual influence of the charging current and the excitation current. At the same time, the structure of the wireless charging coil 130 is fully utilized, eliminating the need to add an extra coil, simplifying the device structure, reducing costs, and ensuring that the device can stably realize the magnetic force adjustment function while realizing wireless charging, thereby improving the integration and reliability of the device.

[0093] For example, the charging mode of the wireless charging coil 130 is triggered by the first control drive circuit 140 according to the charging signal from the charging device 2. In the charging state, the wireless charging IC (Integrated Circuit) is in a dynamic frequency modulation mode of 110kHz to 205kHz or a fixed frequency mode of 127.7kHz, with a rated current of not less than 2A. The wireless charging coil 130 receives the high-frequency alternating power transmitted by the charging device 2, which is rectified into DC power by the wireless charging IC to charge the battery of the electronic device 110. When the first control drive circuit 140 determines that it has entered the device-receiving state or the magnetic force enhancement mode, it immediately pauses the high-frequency charging signal and controls the wireless charging coil 130 to switch to the excitation mode, receiving a DC current of 50mA to 300mA (first current or second current) output by the power supply circuit 143 to realize the weakening or strengthening adjustment of the magnetic attraction force. The switching time between the two working modes is no more than 50ms, which is imperceptible to the user, and the charging and magnetic force adjustment functions do not interfere with each other, ensuring smooth wireless charging and accurate magnetic force adjustment.

[0094] In some embodiments of this application, in the charging mode, the current frequency in the wireless charging coil 130 is a first frequency, and in the excitation mode, the current frequency in the wireless charging coil 130 is a second frequency, wherein the first frequency is different from the second frequency.

[0095] In the above embodiments, the electronic device 110 sets the current frequency in the wireless charging coil 130 to a first frequency in charging mode and a second frequency in excitation mode, with the first frequency being different from the second frequency. This further distinguishes the two operating modes of the wireless charging coil 130 and avoids mutual interference between the currents in the two modes. The first frequency adapts to the frequency requirements of magnetic charging, ensuring the efficiency and stability of wireless charging. The second frequency adapts to the requirements of excitation adjustment, ensuring stable magnetism generated by the wireless charging coil 130 and precise magnetic force adjustment. The different frequency settings enable the two modes to operate stably, improving the efficiency of wireless charging and the accuracy of magnetic force adjustment, avoiding signal interference and functional abnormalities caused by the same frequency, further improving the reliability and stability of the device, and ensuring that both wireless charging and magnetic force adjustment functions can be smoothly implemented.

[0096] For example, the first frequency of the charging mode is 110kHz to 205kHz (dynamic frequency adjustment) and 127.7kHz (fixed frequency) to adapt to the wireless charging requirements; the second frequency of the excitation mode is 50Hz to ensure that the coil generates stable magnetism. The two frequencies are different to effectively avoid mutual interference, ensure stable operation of charging and magnetic force regulation, and realize time-sharing multiplexing.

[0097] like Figure 7 As shown, in some embodiments of this application, the electronic device 110 further includes:

[0098] The nanocrystalline soft magnetic sheet 160 is attached to the wireless charging coil 130 by thermally conductive insulating adhesive.

[0099] In the above embodiment, the electronic device 110 is equipped with a nanocrystalline soft magnetic sheet 160, which is attached to the wireless charging coil 130 with thermally conductive insulating adhesive. The nanocrystalline soft magnetic sheet 160 has excellent magnetic shielding performance, which can shield the magnetic field generated by the wireless charging coil 130 in the excitation mode, avoid the magnetic field from interfering with the electronic components inside the electronic device 110, and protect the normal operation of the device being charged. At the same time, the setting of thermally conductive insulating adhesive can achieve insulation between the nanocrystalline soft magnetic sheet 160 and the wireless charging coil 130 and the electronic device 110, avoid the risk of leakage, improve the safety of the device, and the thermal conductivity can conduct away the heat generated by the wireless charging coil 130 when it is working, reduce the coil temperature, extend the coil life, optimize the heat dissipation effect of the device, ensure the stable operation of the device for a long time, and further improve the reliability and safety of the device.

[0100] For example, the nanocrystalline soft magnetic sheet 160 is a 0.3mm to 0.5mm thick iron-based flexible material, and its size matches that of the wireless charging coil 130. The electronic device 110 also includes a device motherboard. The nanocrystalline soft magnetic sheet 160 is tightly attached to the side of the wireless charging coil 130 near the device motherboard by thermally conductive insulating adhesive. The thermally conductive insulating adhesive achieves insulation and heat conduction. The nanocrystalline soft magnetic sheet 160 focuses the coil magnetic field, gathers the leakage magnetic field, improves the electromagnetic force efficiency, and at the same time shields stray magnetic fields to avoid interfering with the electronic components inside the electronic device 110.

[0101] In some embodiments of this application, the wireless charging coil 130 and the nanocrystalline soft magnetic sheet 160 adopt an integrated packaging structure.

[0102] In the above embodiments, the electronic device 110 adopts an integrated packaging structure for the wireless charging coil 130 and the nanocrystalline soft magnetic sheet 160, which enhances the connection stability between the wireless charging coil 130 and the nanocrystalline soft magnetic sheet 160, and prevents the nanocrystalline soft magnetic sheet 160 from falling off or shifting due to vibration or collision during use, thus ensuring the stability of magnetic shielding and heat dissipation effects. The integrated packaging structure also simplifies the assembly process of the device, reduces assembly difficulty and cost, and reduces the internal space occupied by the device, which is conducive to the miniaturization design of the electronic device 110. In addition, the integrated packaging can also protect the wireless charging coil 130 and the nanocrystalline soft magnetic sheet 160, prevent dust and moisture from entering, extend the service life of both, further improve the reliability and durability of the device, and ensure that the device can stably perform its magnetic shielding, heat dissipation and magnetic force adjustment functions for a long time.

[0103] For example, the wireless charging coil 130 and the nanocrystalline soft magnetic sheet 160 are encapsulated in an integrated epoxy resin package with a package thickness of 1.2mm to 1.5mm to fit the internal stacking space of the mobile phone. The package structure fixes the position of the two, is dustproof and waterproof, simplifies the assembly process, and reserves space for the stacking of pyrolytic graphite sheet 170 (PGS) to accommodate subsequent heat dissipation optimization.

[0104] like Figure 8 As shown, in some embodiments of this application, the electronic device 110 further includes:

[0105] A pyrolytic graphite sheet 170 is disposed on the side of the nanocrystalline soft magnetic sheet 160 away from the wireless charging coil 130.

[0106] In the above embodiments, the electronic device 110 adds a pyrolytic graphite sheet 170, which is positioned on the side of the nanocrystalline soft magnetic sheet 160 away from the wireless charging coil 130. The pyrolytic graphite sheet 170 has excellent thermal conductivity, which can further improve the heat dissipation effect of the device. It can quickly conduct the heat generated by the wireless charging coil 130 and the heat conducted by the nanocrystalline soft magnetic sheet 160 to the heat dissipation structure of the electronic device 110, effectively reducing the internal temperature of the device, avoiding coil aging and performance degradation caused by excessive temperature, and extending the service life of the device. At the same time, the pyrolytic graphite sheet 170 is lightweight, thin, and flexible, which will not increase the size and weight of the device, which is conducive to the miniaturization design of the electronic device 110. It can also work in synergy with the nanocrystalline soft magnetic sheet 160 to achieve both magnetic shielding and efficient heat dissipation, further improving the reliability and stability of the device and ensuring stable operation of the device for a long time.

[0107] For example, the pyrolytic graphite sheet 170 is a 0.05mm thick flexible material with the same dimensions as the nanocrystalline soft magnetic sheet 160. It is attached to the side of the nanocrystalline soft magnetic sheet 160 away from the coil by thermally conductive adhesive, forming a stacked relationship of "wireless charging coil, nanocrystalline material, and pyrolytic graphite sheet 170". The pyrolytic graphite sheet 170 conducts heat quickly, ensuring that the temperature rise is less than or equal to 45°C within 30 minutes of short-term operation at 300mA, thus extending the coil life without increasing the size and weight of the device.

[0108] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0109] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0110] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electronic device, comprising: include: The first sensing module is used to acquire a first proximity signal and the motion state signal of the electronic device; Wireless charging coil; A first control drive circuit is coupled to the first sensing module and the wireless charging coil respectively, and is used to output a first current to the wireless charging coil according to the first proximity signal and the motion state signal. The first current is used to generate a first magnetic field. The electronic device is one of a charging device and a device being charged. The first magnetic field is used to make the wireless charging coil repel the other of the charging device and the device being charged.

2. The electronic device of claim 1, wherein, The first sensing module includes: A specific absorption rate sensor is coupled to the first control drive circuit, and the specific absorption rate sensor is connected to multiple apex antennas of the electronic device for acquiring a first proximity signal; An inertial measurement sensor, coupled to the first control drive circuit, is used to acquire motion state signals.

3. The electronic device of claim 2, wherein, The motion state signal includes rotational motion state signal and linear motion state signal; The inertial measurement sensor includes: A gyroscope, coupled to the first control drive circuit, is used to acquire the rotation state signal of the electronic device; An accelerometer, coupled to the first control drive circuit, is used to acquire the linear motion state signal of the electronic device.

4. The electronic device of claim 3, wherein, The first control drive circuit is used for: Receive the first proximity signal; Receive the rotation state signal and the linear motion state signal; If, within a first preset time period, the first proximity signal is less than or equal to a preset proximity threshold, the rotation state signal is less than or equal to a first preset rotation threshold, and the linear motion state signal is less than or equal to a first preset linear motion threshold, a first current is output to the wireless charging coil.

5. The electronic device according to claim 4, characterized in that, The first control drive circuit is also used for: When the first current is output, if the first proximity signal is greater than the preset proximity threshold, or the rotation state signal is greater than the first preset rotation threshold, or the linear motion state signal is greater than the first preset linear motion threshold, then after a first preset delay, the output of the first current to the wireless charging coil is stopped.

6. The electronic device according to claim 4, characterized in that, The first control drive circuit is also used for: Within a second preset time period, if the first proximity signal is greater than a preset proximity threshold, and if the rotation state signal is greater than a first preset rotation threshold, or the linear motion state signal is greater than a first preset linear motion threshold, then a second current is output to the wireless charging coil. The second current is used to generate a second magnetic field in the wireless charging coil. The electronic device is one of a charging device and a device being charged. The second magnetic field is used to make the wireless charging coil attract the other of the charging device and the device being charged. The first current and the second current are in opposite directions.

7. The electronic device according to claim 6, characterized in that, The first control drive circuit is also used for: When the output of the second current reaches the second preset delay, or when the first sensing module detects that the linear motion state signal is greater than the second preset linear motion threshold and the rotation state signal is greater than the second preset rotation threshold, the output of the second current to the wireless charging coil is stopped.

8. The electronic device according to claim 4, characterized in that, Also includes: An interactive module is used to control the first control drive circuit, causing the first control drive circuit to output a second current to the wireless charging coil. The second current is used to generate a second magnetic field in the wireless charging coil. The electronic device is one of a charging device and a device being charged. The second magnetic field is used to make the wireless charging coil attract the other of the charging device and the device being charged. The direction of the first current is opposite to the direction of the second current. The interaction module is also used to output a control duration signal to the first control drive circuit, and the first control drive circuit is used to determine the duration of outputting the second current based on the control duration signal.

9. The electronic device according to claim 1, characterized in that, The first control drive circuit includes a main controller, a switching circuit, and a power supply circuit; the main controller is coupled to the first sensing module and the switching circuit, the switching circuit is coupled to the power supply circuit, and the power supply circuit is coupled to the wireless charging coil. The main controller is used for: Receive the signal output by the first sensing module and generate a control signal; Based on the control signal, the conduction direction of the switching circuit is controlled; According to the conduction direction, the power supply circuit is controlled to output the first current or the second current to the wireless charging coil; wherein the direction of the first current is opposite to the direction of the second current.

10. The electronic device according to any one of claims 1 to 9, characterized in that, Also includes: The nanocrystalline soft magnetic sheet is attached to the wireless charging coil using thermally conductive insulating adhesive.

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