Flexible circuit board swinging device, swinging method and electronic component radiator

Abstract

The invention discloses a flexible circuit board swinging device and method and an electronic component radiator, and the device comprises a mounting seat, a flexible circuit board, a first permanent magnet, a second permanent magnet, and a control mainboard. The first permanent magnet, the flexible circuit board and the second permanent magnet are fixed on the same side of the mounting seat; the adjacent magnetic pole of the first permanent magnet and the adjacent magnetic pole of the second permanent magnet are opposite in polarity; a planar spiral coil is etched on the flexible circuit board, and a first coil port and a second coil port of the planar spiral coil are connected to the control mainboard; and the control mainboard is used for alternately electrifying the planar spiral coil from the first coil port or the second coil port, so that the flexible circuit board swings back and forth in the magnetic field of the permanent magnet. The swing device can reduce heat dissipation cost and heat dissipation noise and effectively improve heat dissipation efficiency. The invention relates to the technical field of electronic heat dissipation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic heat dissipation, and in particular to a flexible circuit board swinging device, a swinging method and an electronic component heat sink. BACKGROUND

[0002] In order to protect electronic components and prolong the service life of electronic components, heat dissipation of electronic components (such as resistors, capacitors, transformers, etc.) prone to heat in electrical appliances has become one of the focuses of relevant staff.

[0003] At present, the related technology usually cools the electronic components by air cooling or liquid cooling, but these heat dissipation methods have motor shaft structures and / or mechanical transmission structures, and require more parts, have high heat dissipation costs, have mechanical losses, have high heat dissipation noise, and have low heat dissipation efficiency.

[0004] In summary, the technical problems in the related art need to be improved. SUMMARY

[0005] The purpose of the present application is to at least partially solve one of the technical problems in the related art.

[0006] To this end, the main purpose of the embodiments of the present application is to provide a flexible circuit board swinging device, a swinging method and an electronic component heat sink, which is used for heat dissipation of electronic components prone to heat, and can reduce heat dissipation cost and heat dissipation noise, and effectively improve heat dissipation efficiency.

[0007] To achieve the above-mentioned purpose, one aspect of the embodiments of the present application provides a flexible circuit board swinging device, comprising a mounting seat, a flexible circuit board, a first permanent magnet, a second permanent magnet and a control mainboard. The first permanent magnet, the flexible circuit board and the second permanent magnet are fixed on the same side of the mounting seat. The adjacent magnetic poles of the first permanent magnet and the second permanent magnet are opposite in polarity, and the adjacent magnetic poles are the magnetic poles adjacent to the flexible circuit board in the first permanent magnet or the second permanent magnet. The flexible circuit board is etched with a planar spiral coil, and the first coil port and the second coil port of the planar spiral coil are connected to the control mainboard; the control mainboard is used for alternatingly energizing the planar spiral coil from the first coil port or the second coil port, so that the flexible circuit board reciprocally swings in the permanent magnet magnetic field formed between the first permanent magnet and the second permanent magnet.

[0008] In some embodiments, the mounting seat is a U-shaped mounting seat, and the U-shaped mounting seat comprises a first mounting groove, a second mounting groove and a third mounting groove. The first installation slot is arranged on the first side wall of the U-shaped installation seat, the second installation slot is arranged in the middle of the U-shaped installation seat, and the third installation slot is arranged on the second side wall of the U-shaped installation seat. The first permanent magnet is fixed in the first installation slot, the flexible circuit board is fixed in the second installation slot, and the second permanent magnet is fixed in the third installation slot.

[0009] In some embodiments, the opening of the second installation slot is a rounded corner.

[0010] In some embodiments, the first installation slot has a first inclination angle with the central horizontal plane of the U-shaped installation seat, and the second installation slot has a second inclination angle with the central horizontal plane of the U-shaped installation seat; the first inclination angle is equal to the second inclination angle.

[0011] In some embodiments, the flexible circuit board includes a tail portion, a fixed portion, and a free portion. The first coil port and the second coil port of the planar spiral coil are connected to the control mainboard through the tail portion. The fixed portion is fixedly connected with the second installation slot in the installation seat. The free portion is provided with a Hall sensor, and the Hall sensor is connected to the control mainboard through the planar spiral coil.

[0012] To achieve the above-mentioned purpose, another aspect of the embodiment of the present application proposes a swinging method applied to the flexible circuit board swinging device, which comprises: The control mainboard obtains current indication information, the indication information is a first swinging direction or a second swinging direction, the first swinging direction is a direction in which the flexible circuit board approaches the first permanent magnet, and the second swinging direction is a direction in which the flexible circuit board approaches the second permanent magnet. If the current indication information is the first swinging direction, the control mainboard energizes the planar spiral coil from the first coil port to form a first electromagnetic field, and drives the flexible circuit board to swing along the first swinging direction through electromagnetic force generated by the first electromagnetic field and the permanent magnet magnetic field. Alternatively, if the current indication information is the second swinging direction, the control mainboard energizes the planar spiral coil from the second coil port to form a second electromagnetic field, and drives the flexible circuit board to swing along the second swinging direction through electromagnetic force generated by the second electromagnetic field and the permanent magnet magnetic field.

[0013] In some embodiments, the method further comprises: The control mainboard obtains threshold data corresponding to a target swing position, and obtains current Hall voltage data of the flexible circuit board through a Hall sensor, the target swing position being used to represent a swing position of the flexible circuit board at a maximum swing amplitude; The control mainboard performs threshold analysis on the current Hall voltage data according to the threshold data, to obtain a threshold analysis result; If the threshold analysis result is that the current Hall voltage data is less than the threshold data, the control mainboard returns to the step of obtaining threshold data corresponding to a target swing position, and obtaining current Hall voltage data of the flexible circuit board through a Hall sensor; or, if the threshold analysis result is that the current Hall voltage data is equal to the threshold data, the swing direction in the current indication information is updated to obtain updated indication information.

[0014] In some embodiments, the control mainboard energizes the planar spiral coil from a target coil port, including: The control mainboard obtains a current swing demand value, the swing demand value being used to indicate a swing frequency, a swing amplitude of the flexible circuit board, or an air volume generated by swing of the flexible circuit board; The control mainboard analyzes the current swing demand value to obtain an energizing current value corresponding to the current swing demand value, the energizing current value being positively correlated with the current swing demand value; The control mainboard energizes the planar spiral coil from the target coil port according to the energizing current value; The target coil port is the first coil port or the second coil port.

[0015] In some embodiments, the method further includes: The control mainboard obtains a target swing position, and obtains current Hall voltage data of the flexible circuit board through a Hall sensor; The control mainboard performs position analysis on the current Hall voltage data to obtain a current swing position of the flexible circuit board; The control mainboard performs adaptive energization analysis on the current swing position according to the target swing position to obtain an adaptive current value, the adaptive current value being positively correlated with a swing position difference value, the swing position difference value being an absolute position difference between the target swing position and the current swing position; The control mainboard energizes the planar spiral coil from a target coil port according to the adaptive current value; The target coil port is the first coil port or the second coil port.

[0016] To achieve the above object, another aspect of the embodiments of the present application provides an electronic component heat sink, comprising an electronic component needing heat dissipation and a plurality of flexible circuit board oscillation devices as described above.

[0017] To achieve the above object, another aspect of the embodiments of the present application provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the method as described above when executing the computer program.

[0018] To achieve the above object, another aspect of the embodiments of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method as described above.

[0019] To achieve the above object, another aspect of the embodiments of the present application provides a computer program product, comprising a computer program, and the computer program is executed by a processor to implement the method as described above.

[0020] The embodiments of the present application at least have the following beneficial effects: The present application provides a flexible circuit board oscillation device, an oscillation method and an electronic component heat sink, wherein the oscillation device comprises a mounting seat, a flexible circuit board, a first permanent magnet, a second permanent magnet and a control mainboard; the first permanent magnet, the flexible circuit board and the second permanent magnet are fixed on the same side of the mounting seat; the polarity of the adjacent magnetic poles of the first permanent magnet and the second permanent magnet is opposite, and the adjacent magnetic poles are the magnetic poles adjacent to the flexible circuit board in the first permanent magnet or the second permanent magnet; the flexible circuit board is etched with a planar spiral coil, and the first coil port and the second coil port of the planar spiral coil are connected to the control mainboard; the control mainboard is used for alternatingly energizing the planar spiral coil from the first coil port or the second coil port, so that the flexible circuit board reciprocally oscillates in the permanent magnet magnetic field formed between the first permanent magnet and the second permanent magnet. The oscillation device fixes the permanent magnet and the flexible circuit board on the same side of the mounting seat, and alternately energizes the planar spiral coil etched on the flexible circuit board by the control mainboard, so that the flexible circuit board reciprocally moves in the permanent magnet magnetic field, and the heat dissipation of the electronic component is realized by the air flow driven by the electromagnetic force. The required parts are simple and less in number, the heat dissipation cost is effectively reduced, the mechanical loss situation existing in the air cooling heat dissipation or water cooling heat dissipation can be avoided, the heat dissipation noise is reduced, and the heat dissipation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective structural schematic view of the flexible circuit board oscillation device provided by the embodiments of the present application; Figure 2is a shaft side structure assembly relationship schematic diagram of a flexible circuit board swing device provided by an embodiment of the present application; Figure 3 is a side structure assembly relationship schematic diagram of a flexible circuit board swing device provided by an embodiment of the present application; Figure 4 is a side structure schematic diagram of a mounting seat provided by an embodiment of the present application; Figure 5 is a shaft side structure schematic diagram of a mounting seat provided by an embodiment of the present application; Figure 6 is a flow schematic diagram of a swing method provided by an embodiment of the present application; Figure 7 is a structure schematic diagram of an electronic element heat sink provided by an embodiment of the present application; Figure 8 is a hardware structure schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present application clearer, the following further describes the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementation described in the following exemplary embodiments does not represent all the implementations consistent with the embodiments of the present application, but is only an example of devices and methods consistent with some aspects of the embodiments of the present application as described in the appended claims.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0024] At present, the related technology is usually based on air cooling or liquid cooling to heat the electronic elements; wherein the air cooling method realizes the heat dissipation of the electronic elements by air flow driven by a fan; and the liquid cooling method realizes the heat dissipation of the electronic elements by cooling liquid flow driven by a liquid pump. These heat dissipation methods all have motor rotating shaft structures and / or mechanical transmission structures, which have the following shortcomings: 1) The mechanical transmission structure (such as gear transmission parts) is prone to mechanical wear and tear, and the heat dissipation noise is large; 2) The motor in the motor rotating shaft structure is difficult to start in a high temperature or low temperature environment; 3) The motor in the motor rotating shaft structure and / or the gear in the mechanical transmission structure are prone to generate high heat during movement, which has a negative impact on the heat dissipation of the electronic components, resulting in poor heat dissipation effect of the electronic components; 4) In the air-cooled heat dissipation mode, the fan blades are prone to accumulate dust, resulting in heat dissipation attenuation; 5) The air-cooled heat dissipation device and the liquid-cooled heat dissipation device have many parts, resulting in high production and manufacturing costs, large installation space, and high heat dissipation costs; 6) The liquid pump and the liquid cooling pipeline in the liquid-cooled heat dissipation mode are complex and have a risk of liquid leakage.

[0025] In actual application, the air-cooled heat dissipation device and the liquid-cooled heat dissipation device often have frequent start-stop phenomena, such as frequent start-stop of the heat dissipation fan and the motor rotating shaft. The force generated by the frequent start-stop phenomenon can damage the internal mechanical movement parts or the motor rotating shaft movement parts, and the service life of the heat dissipation device is limited.

[0026] It should be noted that the above-mentioned related technology is only used to assist in understanding the technical solutions of the present application, and does not mean that it belongs to the disclosed prior art.

[0027] Therefore, the embodiments of the present application provide a kind of by fixing permanent magnet and flexible circuit board on the same side of mounting seat, and by controlling mainboard to the plane spiral coil etched in flexible circuit board Alternating current, so that flexible circuit board reciprocating motion in permanent magnet magnetic field, it is driven by electromagnetic force to realize the heat dissipation of electronic components by air flow, not only the required parts are simple and the number is less, effectively reduce the cost of heat dissipation;It can also avoid the mechanical loss and heat generation in air-cooled heat dissipation or water-cooled heat dissipation, which is beneficial to reduce the noise of heat dissipation and improve the heat dissipation efficiency.

[0028] In addition, the swing device drives the flexible circuit board to swing by the interaction between the electromagnetic field generated by the plane spiral coil after current and the electromagnetic field of the permanent magnet, which can avoid the situation that the motor in the motor rotating shaft structure is difficult to start in high temperature or low temperature environment, and can also avoid the risk of liquid leakage caused by complex liquid pump and liquid pump pipeline.

[0029] In addition, in actual application, the swing device can get rid of dust by reciprocating swing of the flexible circuit board, realize dust-free heat dissipation, and thus improve the heat dissipation efficiency;Specifically, the current value can be analyzed by the swing frequency value of the swing requirement value that can get rid of dust, and the plane spiral coil is energized based on the current value, which can realize high-frequency oscillation of the flexible circuit board and get rid of dust.

[0030] In addition, the swing device drives air flow to realize heat dissipation of electronic components through elastic deformation of the flexible circuit board under the influence of electromagnetic force, and has no mechanical transmission structure and no motor shaft structure, so that damage of moving parts caused by frequent start-stop can be inhibited, and the service life of the swing device in heat dissipation can be effectively improved.

[0031] The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. The present application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application can also be practiced in a distributed computing environment, in which tasks are performed by remote processing devices connected by a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media, including storage devices.

[0032] Reference Figures 1 to 3 The embodiment of the present application provides a flexible circuit board swing device, which comprises a mounting seat 110, a flexible circuit board 120, a first permanent magnet 131, a second permanent magnet 132 and a control mainboard 140. The first permanent magnet 131, the flexible circuit board 120 and the second permanent magnet 132 are fixed on the same side of the mounting seat 110. Opposite polarities of adjacent magnetic poles of the first permanent magnet 131 and the second permanent magnet 132 are opposite, the adjacent magnetic poles being the magnetic poles adjacent to the flexible circuit board 120 in the first permanent magnet 131 or the second permanent magnet 132. The flexible circuit board 120 is etched with a planar spiral coil 1204, and first and second coil ports of the planar spiral coil 1204 are connected to the control mainboard 140; the control mainboard 140 is used for alternatingly energizing the planar spiral coil 1204 from the first coil port or the second coil port, so that the flexible circuit board 120 reciprocally swings in a permanent magnet magnetic field formed between the first permanent magnet 131 and the second permanent magnet 132.

[0033] In the embodiment of the present application, the first permanent magnet 131 and the second permanent magnet 132 can be fixedly installed on the same side of the mounting seat 110, and the flexible circuit board 120, which can be a FPCB (Flexible Printed Circuit Board) board, is fixedly installed in the middle of the first permanent magnet 131 and the second permanent magnet 132. The first permanent magnet 131 includes a first magnet 1311 and a second magnet 1312, and the second permanent magnet 132 includes a third magnet 1321 and a fourth magnet 1322, wherein the polarity of the second magnet 1312 is the adjacent magnetic pole of the first permanent magnet 131, and the polarity of the third magnet 1321 is the adjacent magnetic pole of the second permanent magnet 132.

[0034] It can be understood that the flexible circuit board swing device can satisfy the case that the adjacent magnetic poles of the first permanent magnet 131 and the second permanent magnet 132 are opposite in polarity. For example, in a first implementation, the first magnet 1311 and the third magnet 1321 can be N-pole magnets, and the second magnet 1312 and the fourth magnet 1322 can be S-pole magnets. Alternatively, in a second implementation, the first magnet 1311 and the third magnet 1321 can be S-pole magnets, and the second magnet 1312 and the fourth magnet 1322 can be N-pole magnets, which are not limited in the present application.

[0035] It should be noted that the planar spiral coil 1204 is used to generate an electromagnetic field based on the current provided by the control main board 140 after being powered on, and the first coil port (not shown) and the second coil port (not shown) are interfaces of the planar spiral coil 1204; and the control main board 140 can be a main board installed with a control chip (such as an MCU). Figure 1 Figure 1 It should be noted that the planar spiral coil 1204 is used to generate an electromagnetic field based on the current provided by the control main board 140 after being powered on, and the first coil port (not shown) and the second coil port (not shown) are interfaces of the planar spiral coil 1204; and the control main board 140 can be a main board installed with a control chip (such as an MCU).

[0036] In a feasible implementation, the first magnet 1311 and the third magnet 1321 are N-pole magnets, and the second magnet 1312 and the fourth magnet 1322 are S-pole magnets. If the current provided by the control main board 140 is input from the first coil port (i.e., the current direction is from the first coil port to the second coil port through the planar spiral coil 1204), the electromagnetic field generated by the planar spiral coil 1204 in the flexible circuit board 120 can drive the flexible circuit board 120 to swing in the direction close to the second permanent magnet 132 under the interaction of the permanent magnet magnetic field. Alternatively, if the current provided by the control main board 140 is input from the second coil port (i.e., the current direction is from the second coil port to the first coil port through the planar spiral coil 1204), the electromagnetic field generated by the planar spiral coil 1204 in the flexible circuit board 120 can drive the flexible circuit board 120 to swing in the direction close to the first permanent magnet 131 under the interaction of the permanent magnet magnetic field. ​

[0037] It is worth mentioning that, since the magnetic field direction and polarity of the planar spiral coil 1204 is related to the current direction after energization, the embodiments of the present application do not make any restrictions on the swing direction of the flexible circuit board 120 when the control mainboard 140 energizes the coil port, which can be flexibly set according to the actual situation, such as the swing direction of the flexible circuit board 120 can be adjusted according to the coil winding direction of the planar spiral coil 1204 and the adjustment of the current input into the first coil port or the second coil port. In another possible implementation, after changing the coil winding direction of the planar spiral coil 1204 on the flexible circuit board 120, the current provided by the control mainboard 140 is still input from the first coil port, at this time the electromagnetic field generated by the planar spiral coil 1204 in the flexible circuit board 120 can drive the flexible circuit board 120 to swing along the direction close to the first permanent magnet 131 under the interaction of the magnetic field of the permanent magnet.

[0038] With reference to Figure 3 In some embodiments, the mounting seat 110 is a U-shaped mounting seat 110, which includes a first mounting groove 1102, a second mounting groove 1103 and a third mounting groove 1101; The first mounting groove 1102 is arranged on the first side wall of the U-shaped mounting seat 110, the second mounting groove 1103 is arranged in the middle of the U-shaped mounting seat 110, and the third mounting groove 1101 is arranged on the second side wall of the U-shaped mounting seat 110; The first permanent magnet 131 is fixed in the first mounting groove 1102, the flexible circuit board 120 is fixed in the second mounting groove 1103, and the second permanent magnet 132 is fixed in the third mounting groove 1101.

[0039] With reference to Figure 4 In some embodiments, the opening of the second mounting groove 1103 is a rounded corner.

[0040] In some embodiments, the included angle between the central horizontal plane of the first mounting groove 1102 and the central horizontal plane of the U-shaped mounting seat 110 is a first inclination angle, and the included angle between the central horizontal plane of the second mounting groove 1103 and the central horizontal plane of the U-shaped mounting seat 110 is a second inclination angle; the first inclination angle is equal to the second inclination angle.

[0041] With reference to Figure 1 , Figure 2 , Figure 3 and Figure 5 In some embodiments, the flexible circuit board 120 includes a tail portion 1203, a fixed portion 1202 and a free portion 1201; The first coil port and the second coil port of the planar spiral coil 1204 are connected to the control mainboard 140 through the tail 1203; The fixed part 1202 is fixedly connected with the second mounting groove 1103 in the mounting seat 110; The free part 1201 is provided with a Hall sensor 1205, which is connected to the control mainboard 140 through the planar spiral coil 1204.

[0042] In the embodiment of the present application, the opening of the second mounting groove 1103 can be a rounded corner. By using the second mounting groove 1103 with a rounded corner, the repeated bending of the flexible circuit board 120 during reciprocating swing is avoided, and the cracking phenomenon on the surface of the flexible circuit board 120 is also avoided, which is beneficial to improve the service life of the flexible circuit board 120.

[0043] It can be understood that the first mounting groove 1102 and the second mounting groove 1103 on the U-shaped mounting seat 110 can have a certain mirror angle (such as angle β in Figure 4 The center horizontal plane of the first mounting groove 1102 (not shown in Figure 4 ) and the center horizontal plane of the U-shaped mounting seat 110 (i.e. the red dashed line in Figure 4 ) are a first inclination angle; the content of the second mounting groove 1103 is similar to that of the first mounting groove 1102, which can be simply analogized. By installing and fixing the permanent magnet through the first mounting groove 1102 and the second mounting groove 1103 with the same inclination angle, the overall U-shaped mounting seat 110 and the permanent magnet can present a horn expansion shape, which is beneficial to improve the maximum angle of the reciprocating swing of the flexible circuit board 120, and can improve the air flow amount driven by the flexible circuit board 120 during reciprocating swing.

[0044] It should be noted that the first coil port and the second coil port of the planar spiral coil 1204 can respectively extend one wire etched in the flexible circuit board 120, and be connected to the control mainboard 140 through the wire via the tail 1203 of the flexible circuit board 120; the fixed part 1202 is used to install and fix the flexible circuit board 120 in the second mounting groove 1103 on the mounting seat 110; the Hall sensor 1205 on the free part 1201 is used to detect the Hall voltage data of the flexible circuit board 120 under the magnetic field and / or electromagnetic field of the permanent magnet, and send the detected Hall voltage data to the control mainboard 140 through the planar spiral coil 1204.

[0045] Figure 6 is an optional flowchart of the swing method provided by the embodiment of the present application, Figure 6The method in the above embodiment can be applied to the flexible circuit swing device, which can include but is not limited to the steps S610 to S630.

[0046] S610, the control mainboard 140 obtains current indication information, the indication information is a first swing direction or a second swing direction, the first swing direction is a direction in which the flexible circuit board 120 is close to the first permanent magnet 131, and the second swing direction is a direction in which the flexible circuit board 120 is close to the second permanent magnet 132. S620, if the current indication information is the first swing direction, the control mainboard 140 energizes the planar spiral coil 1204 from the first coil port to form a first electromagnetic field, and drives the flexible circuit board 120 to swing along the first swing direction through electromagnetic force generated by the first electromagnetic field and the permanent magnet magnetic field. S630, or, if the current indication information is the second swing direction, the control mainboard 140 energizes the planar spiral coil 1204 from the second coil port to form a second electromagnetic field, and drives the flexible circuit board 120 to swing along the second swing direction through electromagnetic force generated by the second electromagnetic field and the permanent magnet magnetic field.

[0047] In the embodiment of the application, in the swing process of the flexible circuit board 120, the control mainboard 140 can obtain the indication information in real time, and keep or adjust the swing direction of the flexible circuit board 120 according to the current obtained indication information, so as to realize the reciprocating swing of the flexible circuit board 120.

[0048] For example, in the embodiment of the application, the flexible circuit board 120 swings along the first swing direction in the current swing process, if the current indication information is the first swing direction, it indicates that the flexible circuit board 120 does not need to adjust the swing direction at the current time point, the control mainboard 140 still energizes the planar spiral coil 1204 from the first coil port, so that the first electromagnetic field formed by the planar spiral coil 1204 generates electromagnetic force under the interaction of the permanent magnet magnetic field, and drives the flexible circuit board 120 to keep swinging along the first swing direction; or, if the current indication information is the second swing direction, it indicates that the flexible circuit board 120 needs to adjust the swing direction at the current time point, the control mainboard 140 switches from energizing the planar spiral coil 1204 from the first coil port to energizing the planar spiral coil 1204 from the second coil port, so that the electromagnetic field generated by the planar spiral coil 1204 is switched from the first electromagnetic field to the second electromagnetic field, and then the second electromagnetic field formed by the planar spiral coil 1204 generates electromagnetic force under the interaction of the permanent magnet magnetic field, and drives the flexible circuit board 120 to keep swinging along the second swing direction.

[0049] In some embodiments, the method further comprises: The control mainboard 140 acquires threshold data corresponding to a target swing position, and acquires current Hall voltage data of the flexible circuit board 120 through the Hall sensor 1205, where the target swing position is used to represent a swing position of the flexible circuit board 120 at a maximum swing amplitude; The control mainboard 140 performs threshold analysis on the current Hall voltage data according to the threshold data, to obtain a threshold analysis result. If the threshold analysis result is that the current Hall voltage data is less than the threshold data, the control mainboard 140 returns to acquire the threshold data corresponding to the target swing position, and acquires the current Hall voltage data of the flexible circuit board 120 through the Hall sensor 1205; or, if the threshold analysis result is that the current Hall voltage data is equal to the threshold data, the swing direction in the current indication information is updated to obtain updated indication information.

[0050] In the embodiments of the present application, the control mainboard 140 can first acquire a swing position of the flexible circuit board 120 at a maximum swing amplitude (i.e., a target swing position), which is used to represent a critical position of the flexible circuit board 120 changing the swing direction; and then based on the target swing position, a critical Hall voltage of the flexible circuit board 120 at the target swing position is determined in advance, denoted as threshold data.

[0051] It can be understood that, in the swing process of the flexible circuit board 120, the flexible circuit board 120 approaches the permanent magnet through swing, so that the Hall voltage data detected by the Hall sensor 1205 becomes larger, and when the flexible circuit board 120 reaches the swing position at the maximum swing amplitude, the Hall voltage data detected by the Hall sensor 1205 is maximum; on the contrary, the flexible circuit board 120 swings away from the permanent magnet, so that the Hall voltage data detected by the Hall sensor 1205 becomes smaller, and when the flexible circuit board 120 reaches the overall center horizontal plane of the swing device, the Hall voltage data detected by the Hall sensor 1205 is minimum. Therefore, the control mainboard 140 can acquire the Hall voltage data of the flexible circuit board 120 at the current swing position through the Hall sensor 1205; the threshold analysis can be to compare the size relationship between the threshold data and the current Hall voltage data, so as to obtain a threshold analysis result.

[0052] Specifically, if the threshold analysis result is that the current Hall voltage data is less than the threshold data, it indicates that the current swing position of the flexible circuit board 120 is not equal to the target swing position, and the flexible circuit board 120 still needs to continue to swing along the current swing direction. At this time, the control mainboard 140 does not update the indication information, and returns to execute the steps of obtaining the threshold data corresponding to the target swing position by the control mainboard 140, and obtaining the current Hall voltage data of the flexible circuit board 120 by the Hall sensor 1205. Alternatively, if the threshold analysis result is that the current Hall voltage data is equal to the threshold data, it indicates that the current swing position of the flexible circuit board 120 is equal to the target swing position, and the flexible circuit board 120 needs to switch the swing direction. At this time, the control mainboard 140 can adjust the swing direction in the current indication information, so as to obtain updated indication information, so that the control mainboard 140 changes the current direction input to the planar spiral coil 1204 based on the updated indication information, and then makes the flexible circuit board 120 swing reversely, so as to realize the reciprocating swing of the flexible circuit board 120.

[0053] In some embodiments, the control mainboard 140 energizes the planar spiral coil 1204 from the target coil port, including: The control mainboard 140 obtains a current swing demand value, the swing demand value being used to indicate a swing frequency, a swing amplitude of the flexible circuit board 120, or an air volume generated by the swing of the flexible circuit board 120; The control mainboard 140 analyzes the current swing demand value to obtain an energizing current value corresponding to the current swing demand value, the energizing current value being positively correlated with the current swing demand value; The control mainboard 140 energizes the planar spiral coil 1204 from the target coil port according to the energizing current value; Wherein, the target coil port is the first coil port or the second coil port.

[0054] In the embodiments of the present application, the current swing demand value can be any one of a preset swing frequency, a swing amplitude, an air volume generated by the swing of the flexible circuit board 120, etc. in the control mainboard 140, or can be obtained based on a demand instruction issued by a user through an external device (such as a computer). The demand instruction records the swing frequency, swing amplitude, or air volume set by the user.

[0055] It can be understood that, since the magnetic field strength of the electromagnetic field generated by the planar spiral coil 1204 is positively correlated with the current intensity after being powered on, and as the magnetic field strength of the electromagnetic field becomes larger, the electromagnetic force generated by the interaction between the magnetic field and the permanent magnet also becomes larger, under the influence of the larger electromagnetic force, the swing frequency, swing amplitude and wind volume generated by the flexible circuit board 120 also become larger. Therefore, the power-on current value corresponding to the swing demand value can be obtained based on the positive correlation analysis, and the specific analysis method can be to map the power-on current value based on the current swing demand value, or to substitute the current swing demand value into the preset positive correlation function to obtain the power-on current value; then, the control main board 140 inputs the current with a current size equal to the power-on current value from the target coil port to the planar spiral coil 1204, so that the flexible circuit board 120 swings according to the required swing frequency, swing amplitude, or generates the required wind volume.

[0056] In some embodiments, the method further comprises: The control main board 140 acquires a target swing position, and acquires current Hall voltage data of the flexible circuit board 120 through the Hall sensor 1205; The control main board 140 performs position analysis on the current Hall voltage data to obtain a current swing position of the flexible circuit board 120; The control main board 140 performs adaptive power-on analysis on the current swing position according to the target swing position to obtain an adaptive current value, the adaptive current value being positively correlated with a swing position difference value, the swing position difference value being an absolute difference value between the target swing position and the current swing position; The control main board 140 powers on the planar spiral coil 1204 from the target coil port according to the adaptive current value; The target coil port is the first coil port or the second coil port.

[0057] In the embodiments of the present application, the position analysis can be based on the relationship between the aforementioned Hall voltage data and the swing position, and the current swing position of the flexible circuit board 120 is determined through the current Hall voltage data. The swing amplitude of the current swing position can be represented as:

[0058] Wherein, is the swing amplitude of the current swing position; is the magnetic field strength of the permanent magnet magnetic field; is the current intensity of the current input by the control main board 140 to the planar spiral coil 1204; is the material stiffness of the flexible circuit board 120; The current Hall voltage data.

[0059] It can be understood that in the first embodiment, the adaptive energization analysis can first calculate the ratio between the swing arc of the current swing position and the maximum swing arc corresponding to the target swing position; then determine the swing position difference and the corresponding adaptive current value based on the calculated ratio and the target swing position. The adaptive current value is calculated in a similar manner to the aforementioned energization current value, which can be simply inferred, and therefore will not be described here.

[0060] In the second embodiment, the adaptive energization analysis can be based on the swing arc and the three-dimensional attribute information of the flexible circuit board 120 (such as the swing radius of the flexible circuit board 120) to calculate the actual swing position of the flexible circuit board 120, and then determine the adaptive current value based on the position difference between the actual swing position and the target swing position. There are many ways to calculate the three-dimensional position, which will not be described here.

[0061] It should be noted that during the swing of the flexible circuit board 120, the control main board 140 can obtain the current Hall voltage data in real time and perform position and adaptive energization analysis, control the current intensity input to the planar spiral coil 1204 based on the adaptive current value determined in real time, and dynamically adjust the swing angle and frequency of the flexible circuit board 120 per unit time during the swing, which is beneficial to breaking the mechanical resonance point of the flexible circuit board 120 and avoiding material fatigue and fracture of the flexible circuit board 120 during the swing, and effectively improving the heat dissipation service life of the flexible circuit board 120.

[0062] It is worth mentioning that as the flexible circuit board 120 approaches the permanent magnet (i.e., the swing position of the flexible circuit board 120 approaches the target swing position), the swing position difference becomes smaller. The adaptive current value of the present embodiment is positively correlated with the swing position difference, which can reduce the electromagnetic force received by the flexible circuit board 120 as the swing position of the flexible circuit board 120 approaches the target swing position, which is beneficial to the recovery of the elastic deformation of the flexible circuit board 120 and inhibits the occurrence of the fracture of the flexible circuit board 120.

[0063] Referring to Figure 7 The present embodiment also provides an electronic component heat sink, which comprises an electronic component 200 that needs to be cooled and a plurality of flexible circuit board swing devices 100.

[0064] In the present embodiment, a plurality of flexible circuit board swing devices 100 can be arranged beside the electronic component 200 that needs to be cooled, and the flexible circuit board 120 in the flexible circuit board swing device 100 drives the air flow to achieve heat dissipation of the electronic component 200.

[0065] Next, the scheme of the embodiment of the application is described in detail: In the initial state, the planar spiral coil 1204 of the flexible circuit board 120 can be powered by the control mainboard 140 to generate an electromagnetic field, which is interacted with the magnetic field formed by the first permanent magnet 131 and the second permanent magnet 132 fixed in the U-shaped mounting seat 110, so as to make the flexible circuit board 120 bend upward or downward.

[0066] Then, the control mainboard 140 controls the current direction flowing through the planar spiral coil 1204 of the flexible circuit board 120 by using the Hall sensor 1205 connected with the planar spiral coil 1204, to generate an alternating electromagnetic field and electromagnetic force, which drives the free end of the flexible circuit board 120 to perform reciprocating bending deformation swing around the fixed end, so as to realize the reciprocating non-contact swing of the flexible circuit board 120, and further realize the purpose of driving air flow to cool the electronic element 200.

[0067] During the swing of the flexible circuit board 120, the control mainboard 140 can also control the size of the air volume, the swing amplitude and the frequency by controlling the current flowing through the planar spiral coil 1204; specifically, the greater the current flowing through, the greater the swing amplitude and the frequency of the flexible circuit board 120, and the greater the air volume generated; on the contrary, the smaller the current flowing through, the smaller the swing amplitude and the frequency of the flexible circuit board 120, and the smaller the air volume generated.

[0068] The embodiment of the application also provides an electronic device, which comprises a memory and a processor, the memory stores a computer program, and the processor realizes the method described above when executing the computer program. The electronic device can be any intelligent terminal including a tablet computer, a vehicle-mounted computer, etc.

[0069] It can be understood that the contents in the method embodiment are applicable to the device embodiment, the device embodiment specifically realizes the same functions as the method embodiment, and achieves the same beneficial effects as the method embodiment.

[0070] Please refer to Figure 8 , Figure 8 The hardware structure of the electronic device of another embodiment is illustrated, which comprises: The processor 801 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, and is configured to execute related programs to implement the technical solutions provided by the embodiments of the present application. The memory 802 can be implemented by a ROM (Read Only Memory), a static storage device, a dynamic storage device, or a RAM (Random Access Memory), and the like. The memory 802 can store an operating system and other application programs. When the technical solutions provided by the embodiments of the present application are implemented by software or firmware, the related program codes are stored in the memory 802 and are called and executed by the processor 801 to implement the above-mentioned method of the embodiments of the present application. The input / output interface 803 is configured to implement information input and output. The communication interface 804 is configured to implement the communication interaction between the device and other devices. The communication can be realized by a wired manner (for example, a USB, a network cable, or the like) or a wireless manner (for example, a mobile network, WIFI, Bluetooth, or the like). The bus 805 is configured to transmit information between various components (for example, the processor 801, the memory 802, the input / output interface 803, and the communication interface 804) of the device. The processor 801, the memory 802, the input / output interface 803, and the communication interface 804 are connected to each other through the bus 805 to realize the communication connection between the device.

[0071] The embodiments of the present application further provide a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the above-mentioned method.

[0072] It can be understood that the content in the above-mentioned method embodiments is applicable to the present storage medium embodiments. The present storage medium embodiments specifically implement the functions of the above-mentioned method embodiments, and achieve the same beneficial effects as the above-mentioned method embodiments.

[0073] The embodiments of the present application further provide a computer program product, which includes a computer program. The computer program is executed by a processor to implement the above-mentioned method.

[0074] It can be understood that the contents in the above method embodiments are all applicable to the program product embodiments, the program product embodiments specifically implement the functions same as those of the above method embodiments, and achieve the same beneficial effects as those of the above method embodiments.

[0075] The memory, as a non-transitory computer readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory can optionally include a memory disposed remotely with respect to the processor, and these remote memories can be connected to the processor through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0076] The embodiments described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of technology and the appearance of new application scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0077] Those skilled in the art can understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and can include more or fewer steps than those shown in the figures, or combine certain steps, or different steps.

[0078] The device embodiments described above are only schematic, and the units described as separate components can or can not be physically separate, that is, can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0079] Those skilled in the art can understand that all or some of the steps in the above disclosed method, the functional modules / units in the system and the device can be implemented as software, firmware, hardware and their appropriate combinations.

[0080] The terms "first", "second", "third", "fourth", and the like in the description and in the claims of this application, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of the terms so termed is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of orderly or chronological mundane operation, reverse order operation, based on circuitry availability, based on stated preference or the like, and that "default" or other orderings are thus permissible. Further, the terms "comprise", "comprising", "include", "including", and the like, are specifically intended to be open-ended. That is, references to individual steps and the like do not suhstantially exclude the presence of two or more of a given step or its integral presence in the process, method, system, article, or apparatus having been made with a wider scope. The use of notation such as "first", "second", "third", etc. does not generally limit the areas, but is used to connect like elements or to distinguish one claim from another. These terms can be used interchangeably when appropriate. Terms concerning the relative position of elements can be interpreted such that their use adheres to their normal meaning, but they can also be interpreted to mean the opposite according to specific claims.

[0081] It should be understood that, in the application, "at least one" refers to one or more, and "multiple" refers to two or more. "And / or" is used to describe the relationship between associated objects, which means that there can be three relationships, for example, "A and / or B" can mean that there are only A, only B, and A and B at the same time. Where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and back associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c, can mean a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0082] In several embodiments provided in the application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the above-described device embodiments are only illustrative, for example, the division of the above-mentioned units is only a logical functional division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0083] The units described above as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the application.

[0084] In addition, each of the functional units in the embodiments of the present application can be integrated in one processing unit, or each unit can exist alone physically, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware, or in the form of a software functional unit.

[0085] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present application, essentially or partially, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes multiple instructions used to cause a computer device (such as a personal computer, a server, or a network device) to perform all or part of the steps of the methods in the embodiments of the present application. The foregoing storage medium includes: various memories (such as a read-only memory, a random access memory, a flash memory, or the like) and a magnetic disk or an optical disk and the like.

[0086] The preferred embodiments of the embodiments of the present application are described above with reference to the accompanying drawings, and are not intended to limit the scope of the embodiments of the present application. Any modification, equivalent replacement, and improvement made by those skilled in the art without departing from the scope and spirit of the embodiments of the present application shall fall within the scope of the embodiments of the present application.

Claims

1. A flexible circuit board swing device, characterized in that: It includes a mounting base, a flexible circuit board, a first permanent magnet, a second permanent magnet and a control mainboard; The first permanent magnet, the flexible circuit board, and the second permanent magnet are fixed on the same side of the mounting base; The adjacent magnetic poles of the first permanent magnet and the adjacent magnetic poles of the second permanent magnet have opposite polarities, and the adjacent magnetic poles are the magnetic poles of the first permanent magnet or the second permanent magnet that are adjacent to the flexible circuit board; The flexible circuit board is etched with a planar spiral coil, and the first coil port and the second coil port of the planar spiral coil are connected to the control main board; the control main board is used to alternately supply power to the planar spiral coil from the first coil port or the second coil port, so that the flexible circuit board swings back and forth in the permanent magnet magnetic field, and the permanent magnet magnetic field is the magnetic field formed between the first permanent magnet and the second permanent magnet.

2. The device according to claim 1, characterized in that The mounting seat is a U-shaped mounting seat, and the U-shaped mounting seat includes a first mounting groove, a second mounting groove and a third mounting groove; The first mounting groove is located on the first side wall of the U-shaped mounting seat, the second mounting groove is located in the middle of the U-shaped mounting seat, and the third mounting groove is located on the second side wall of the U-shaped mounting seat; The first permanent magnet is fixed in the first mounting slot, the flexible circuit board is fixed in the second mounting slot, and the second permanent magnet is fixed in the third mounting slot.

3. The device according to claim 2, characterized in that The opening of the second mounting groove is rounded.

4. The device according to claim 2, characterized in that The angle between the central horizontal plane of the first mounting groove and the central horizontal plane of the U-shaped mounting seat is a first inclination angle, and the angle between the central horizontal plane of the second mounting groove and the central horizontal plane of the U-shaped mounting seat is a second inclination angle; the first inclination angle is equal to the second inclination angle.

5. The device according to claim 1, characterized in that The flexible circuit board includes a tail portion, a fixed portion and a free portion; The first coil port and the second coil port of the planar spiral coil are connected to the control main board through the tail; The fixing portion is fixedly connected to the second mounting groove in the mounting seat; The free portion is provided with a Hall sensor, and the Hall sensor is connected to the control main board via the planar spiral coil.

6. A swing method, characterized in that, Applied to the flexible circuit board swinging device according to any one of claims 1 to 5, the method comprises: The control mainboard obtains current indication information, where the indication information is a first swing direction or a second swing direction, where the first swing direction is a direction in which the flexible circuit board approaches the first permanent magnet, and the second swing direction is a direction in which the flexible circuit board approaches the second permanent magnet; If the current instruction information indicates a first swing direction, the control mainboard applies power to the planar spiral coil from the first coil port to form a first electromagnetic field, and the electromagnetic force generated by the first electromagnetic field and the magnetic field of the permanent magnet drives the flexible printed circuit board to swing along the first swing direction; Alternatively, if the current indication information is the second swing direction, the control mainboard energizes the planar spiral coil from the second coil port to form a second electromagnetic field, and the electromagnetic force generated by the second electromagnetic field and the permanent magnet magnetic field drives the flexible circuit board to swing along the second swing direction.

7. The method according to claim 6, characterized in that The method further comprises: The control mainboard obtains threshold data corresponding to a target swing position, and obtains current Hall voltage data of the flexible circuit board through a Hall sensor, wherein the target swing position is used to represent the swing position of the flexible circuit board at a maximum swing arc; The control mainboard performs a threshold analysis on the current Hall voltage data according to the threshold data to obtain a threshold analysis result; If the threshold analysis result is that the current Hall voltage data is less than the threshold data, then the step of returning to the control main board to obtain the threshold data corresponding to the target swing position, and obtaining the current Hall voltage data of the flexible circuit board through the Hall sensor is performed; or, if the threshold analysis result is that the current Hall voltage data is equal to the threshold data, then the swing direction in the current indication information is updated to obtain the updated indication information.

8. The method according to claim 6 or 7, characterized in that The control main board supplies power to the planar spiral coil from the target coil port, including: The control mainboard acquires a current swing demand value, where the swing demand value is used to indicate the swing frequency, swing arc, or air volume generated by the swing of the flexible circuit board; The control mainboard analyzes the current swing demand value to obtain a current value corresponding to the current swing demand value, wherein the current value is positively correlated with the current swing demand value; The control main board supplies power to the planar spiral coil from the target coil port according to the current value; The target coil port is the first coil port or the second coil port.

9. The method according to claim 6 or 7, characterized in that The method further comprises: The control main board obtains the target swing position, and obtains the current Hall voltage data of the flexible circuit board through the Hall sensor; The control mainboard performs position analysis on the current Hall voltage data to obtain the current swing position of the flexible circuit board; The control mainboard performs adaptive power-on analysis on the current swing position according to the target swing position to obtain an adaptive current value, wherein the adaptive current value is positively correlated with a swing position difference, and the swing position difference is an absolute position difference between the target swing position and the current swing position; The control mainboard supplies power to the planar spiral coil from the target coil port according to the adaptive current value; The target coil port is the first coil port or the second coil port.

10. An electronic component radiator, characterized in that: The device comprises electronic components requiring heat dissipation and a plurality of flexible circuit board swinging devices as described in any one of claims 1 to 5.

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