Three-section type high-heat-dissipation wireless charging device

Abstract

A three-section type high-heat-dissipation wireless charging device comprises a plurality of independent heat dissipation bodies, the independent heat dissipation bodies transmit heat to respective shells through heat conduction pieces and / or air convection, and the independent heat dissipation bodies comprise the first heat dissipation body, the second heat dissipation body and the third heat dissipation body. According to the wireless charging device, the magnetic induction coil assembly, the charging main board and the power supply main board are separated, the heat dissipation main body is divided into three parts, the three parts dissipate heat respectively, and heat generated by the wireless charging device can be quickly and efficiently diffused.

Description

Technical Field

[0001] The utility model relates to the field of wireless charging, in particular to a three-stage high heat dissipation wireless charging device. Background Art

[0002] With the development of the times, wireless charging devices are becoming more and more popular among the public because of their convenience. Wireless charging is a charging technology based on the principle of electromagnetic induction. Wireless charging devices can transmit electrical energy to devices wirelessly. When in use, you only need to place the device to be charged on the wireless charging panel to charge it. It is convenient and fast. Usually, the heat generated by the wireless charging device is concentrated on the magnetic induction charging coil assembly, the wireless charging circuit main board and the power main board, and these three parts are often integrated together, resulting in heat concentration, and the temperature rise affects the wireless charging efficiency. Utility Model Content

[0003] In view of this, a three-stage high heat dissipation wireless charging device with multiple heat dissipation bodies and fast and efficient heat dissipation is provided.

[0004] To achieve the above objectives, the technical solution adopted by the utility model is: a three-stage high-heat dissipation wireless charging device, comprising a plurality of independent heat sinks, each of which transfers heat to its own shell through a heat conductor and / or air convection, the independent heat sink comprising a first heat sink, a second heat sink and a third heat sink, the first heat sink comprising a first upper cover, a magnetic induction coil assembly and a first lower cover, the magnetic induction coil assembly being accommodated in a space enclosed by the first upper cover and the first lower cover, the second heat sink comprising a second upper cover, a charging mainboard and a second lower cover, the charging mainboard being accommodated in a space enclosed by the second upper cover and the second lower cover, the third heat sink comprising an outer shell, an inner shell and a power mainboard, the outer shell wraps the inner shell, the power mainboard being accommodated in the inner shell, the first heat sink, the second heat sink and the third heat sink are connected in sequence through a charging cable.

[0005] Furthermore, the first heat sink also includes a first charging interface, a charging cable fixing seat and a charging cable head accommodating base. The charging cable connected to the first heat sink passes through the first charging interface and is connected to the magnetic induction coil assembly. The charging cable is fixed to the charging cable fixing seat by a fastener. At this time, the end cable head of the charging cable is placed on the charging cable head accommodating base.

[0006] Furthermore, the magnetic induction coil assembly includes a magnet, foam and an induction coil assembly, the first lower cover of the first heat sink is provided with a two-step stepped groove, the groove includes a first step bottom surface and a second step bottom surface, the foam is placed under the magnet, the magnet and foam are placed on the first step bottom surface and the upper part of the magnet is abutted against the first upper cover, and the induction coil assembly is placed on the second step bottom surface.

[0007] Furthermore, the groove further includes a first step side surface and a second step side surface, the outer ring of the magnet is loosely matched with the first step side surface, and the outer ring of the induction coil assembly is loosely matched with the second step side surface.

[0008] Furthermore, the second heat sink also includes a second charging interface, and the charging cable connected to the second heat sink passes through the second charging interface and is connected to the charging mainboard.

[0009] Furthermore, the second heat sink also includes a charging mainboard socket, which is composed of a boss extending from the inner wall of the second lower cover, the boss is an L-shaped boss, and the charging mainboard has a slot corresponding to the boss. The charging mainboard is placed on the charging mainboard socket and the slot is engaged with the boss.

[0010] Furthermore, the second heat sink also includes a clamping piece, which is a stepped cylinder with a small upper part and a large lower part. The bottom surface of the large diameter end of the clamping piece is in contact with the charging mainboard, and the upper surface of the large diameter end of the clamping piece is in contact with the bottom of the second upper cover. The second upper cover is provided with a through hole, and the small diameter end of the clamping piece is passed through the through hole. The second upper cover presses the charging mainboard to the charging mainboard socket through the clamping piece.

[0011] Furthermore, the third heat sink also includes a third charging interface, and the charging cable connected to the third heat sink passes through the third charging interface and is connected to the power supply mainboard.

[0012] Furthermore, the third heat sink also includes a charging connector, and the charging connector is connected to the power supply mainboard to supply power to the power supply mainboard.

[0013] Furthermore, the first heat sink, the second heat sink and the third heat sink are arranged in the same horizontal straight line.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects: this three-stage high heat dissipation wireless charging device separates the magnetic induction coil assembly, the charging main board and the power main board. Compared with the traditional wireless charging device, the heat dissipation body is divided into three parts, and the three parts dissipate heat separately, which can quickly and efficiently diffuse the heat generated by the wireless charging device, so that the heat cannot accumulate and affect the wireless charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 It is a three-dimensional schematic diagram of a three-stage high heat dissipation wireless charging device of the utility model.

[0017] Figure 2 It is an exploded schematic diagram of a first heat sink of a three-stage high heat dissipation wireless charging device of the utility model.

[0018] Figure 3 It is an exploded schematic diagram of a second heat sink of a three-stage high heat dissipation wireless charging device of the utility model.

[0019] Figure 4 It is an exploded schematic diagram of a third heat sink of a three-stage high heat dissipation wireless charging device of the utility model.

[0020] in,

[0021] 1. First heat sink; 11. First upper cover; 12. Magnetic induction coil assembly; 121. Magnet; 122. Foam; 123. Induction coil assembly; 13. First lower cover; 131. Bottom of first step; 132. Bottom of second step; 133. Side of first step; 134. Side of second step; 14. First charging interface; 15. Charging cable fixing seat; 16. Charging cable head accommodating base; 2. Second heat sink; 21. Second upper cover; 22. Charging motherboard; 23. Second lower cover; 24. Second charging interface; 25. Charging motherboard socket; 26. Pressing piece; 3. Third heat sink; 31. Outer shell; 32. Inner shell; 33. Power motherboard; 34. Third charging interface; 35. Charging connector; 4. Charging cable. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0025] See also Figure 1-2 , showing a three-stage high heat dissipation wireless charging device provided by an embodiment of the utility model, comprising a plurality of independent heat sinks, each of which transfers heat to its own shell through a heat conductor and / or air convection, the independent heat sinks comprising a first heat sink 1, a second heat sink 2 and a third heat sink 3, the first heat sink 1 comprising a first upper cover 11, a magnetic induction coil assembly 12 and a first lower cover 13, the magnetic induction coil assembly 12 being accommodated in a space enclosed by the first upper cover 11 and the first lower cover 13, the second heat sink 2 comprising a second upper cover 21, a charging mainboard 22 and a second lower cover 23, the charging mainboard 22 being accommodated in a space enclosed by the second upper cover 21 and the second lower cover 23, the third heat sink 3 comprising an outer shell 31, an inner shell 32 and a power mainboard 33, the outer shell 31 wraps the inner shell 32, the power mainboard 33 being accommodated in the inner shell 32, the first heat sink 1, the second heat sink 2 and the third heat sink 3 being connected in sequence through a charging cable 4.

[0026] In some specific embodiments, the magnetic induction coil assembly 12, charging mainboard 22 and power mainboard 33 of the wireless charging device are arranged in three independent heat sinks, so that the three are cooled separately through their respective heat sinks to avoid the overlapping heat generation of the three electronic devices and affect the heat dissipation effect. The existing products place these three electronic devices in a charging shell, resulting in overlapping heat generation, and the heat is concentrated in a charging shell, which brings many problems to the heat dissipation. Furthermore, each heat sink can be set with a heat dissipation method as needed. On the one hand, it can increase the contact area between the shell and the air to speed up the heat dissipation speed. On the other hand, it can increase the convenience and flexibility of the placement of electronic devices, greatly improve the applicable space of the wireless charging function, and can also be split into more independent heat sinks for heat dissipation as needed. In this embodiment, the charging mainboard 22 is used to power the device to be charged, and the power mainboard 33 is used to input an external power supply to power the wireless charging device. The heat conductive member can be a thermal pad, a thermal block, a thermal adhesive, etc.

[0027] Specifically, the first heat sink 1 also includes a first charging interface 14, a charging cable fixing seat 15 and a charging cable end accommodating base 16. The charging cable 4 connected to the first heat sink 1 passes through the first charging interface 14 and is connected to the magnetic induction coil assembly 12. The charging cable 4 is fixed to the charging cable fixing seat 15 by a fastener. At this time, the end cable end of the charging cable 4 is placed on the charging cable end accommodating base 16.

[0028] Specifically, the magnetic induction coil assembly 12 includes a magnet 121, foam 122 and an induction coil assembly 123. The first lower cover 13 of the first heat sink 1 is provided with a two-step stepped groove, the groove includes a first step bottom surface 131 and a second step bottom surface 132. The foam 122 is placed at the bottom of the magnet 121. The magnet 121 and the foam 122 are placed on the first step bottom surface 131 and the upper part of the magnet 121 is in contact with the first upper cover 11. The induction coil assembly 123 is placed on the second step bottom surface 132.

[0029] In some specific embodiments, the bottom surface of the foam 122 fits with the bottom surface of the first step 131, and the surface of the foam 122 fits with the bottom of the magnet 121, so that the foam 122 fixes the magnet 121 in the groove. At the same time, the foam 122 supports the magnet 121, raising the magnet 121 so that the surface of the magnet 121 abuts against the bottom surface of the first upper cover 11, thereby increasing the magnetic attraction of the magnet 121 to the external device to be charged.

[0030] More specifically, the groove further includes a first step side surface 133 and a second step side surface 134 , the outer ring of the magnet 121 loosely fits with the first step side surface 133 , and the outer ring of the induction coil assembly 123 loosely fits with the second step side surface 134 .

[0031] Specifically, the second heat sink 2 further includes a second charging interface 24 , and the charging line 4 connected to the second heat sink 2 passes through the second charging interface 24 and is connected to the charging mainboard 22 .

[0032] More specifically, the second heat sink 2 also includes a charging motherboard socket 25, which is composed of a boss extending from the inner wall of the second lower cover 23, and the boss is an L-shaped boss. The charging motherboard 22 has a slot corresponding to the boss, and the charging motherboard 22 is placed on the charging motherboard socket 25 and the slot is engaged with the boss.

[0033] More specifically, the second heat sink 2 also includes a clamping piece 26, which is a stepped cylinder with a small upper part and a large lower part. The bottom surface of the large diameter end of the clamping piece 26 is in contact with the charging mainboard 22, and the upper surface of the large diameter end of the clamping piece 26 is in contact with the bottom of the second upper cover 21. The second upper cover 21 is provided with a through hole, and the small diameter end of the clamping piece 26 is passed through the through hole. The second upper cover 21 presses the charging mainboard 22 onto the charging mainboard socket 25 through the clamping piece 26.

[0034] In some specific embodiments, the clamping piece 26 may also be in other shapes such as a cube, and the clamping piece 26 also serves to separate the second upper cover 21 and the charging mainboard 22, thereby forming an electronic component accommodating space.

[0035] Specifically, the third heat sink 3 further includes a third charging interface 34 , and the charging line 4 connected to the third heat sink 3 passes through the third charging interface 34 and is connected to the power mainboard 33 .

[0036] Specifically, the third heat sink 3 further includes a charging connector 35 , and the charging connector 35 is connected to the power supply mainboard 33 to supply power to the power supply mainboard 33 .

[0037] Specifically, the first heat sink 1 , the second heat sink 2 and the third heat sink 3 are arranged in the same horizontal straight line.

[0038] In some specific embodiments, the heat conductor can be a heat-conductive metal block that supports the shell side and the two ends or both sides of the metal block are directly or indirectly in contact with the inner wall of the shell, the circuit board (or other heating elements), respectively. The heat conductor can also use thermal conductive adhesive. For example, the coil body can be adhered to the corresponding inner wall of the shell with thermal conductive adhesive. At the same time, the magnetic induction coil assembly 12, the charging main board 22 and the power main board 33 can also transfer heat to the shell through air convection. For example, the internal space of the first heat sink 1 is relatively large, and air convection can be fully utilized to transfer heat to the corresponding shell.

[0039] In summary, this three-stage high heat dissipation wireless charging device separates the magnetic induction coil assembly 12, the charging main board 22 and the power main board 33. Compared with the traditional wireless charging device, the heat dissipation body is divided into three parts. The three parts dissipate heat separately, which can quickly and efficiently diffuse the heat generated by the wireless charging device, so that the heat cannot accumulate and affect the wireless charging efficiency.

[0040] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A three-stage high heat dissipation wireless charging device, characterized in that: The invention comprises a plurality of independent heat sinks, each of which transfers heat to its own shell through a heat conductor and / or air convection. The independent heat sinks comprise a first heat sink, a second heat sink and a third heat sink. The first heat sink comprises a first upper cover, a magnetic induction coil assembly and a first lower cover, and the magnetic induction coil assembly is accommodated in a space enclosed by the first upper cover and the first lower cover. The second heat sink comprises a second upper cover, a charging mainboard and a second lower cover, and the charging mainboard is accommodated in a space enclosed by the second upper cover and the second lower cover. The third heat sink comprises an outer shell, an inner shell and a power mainboard, the outer shell wraps the inner shell, and the power mainboard is accommodated in the inner shell. The first heat sink, the second heat sink and the third heat sink are connected in sequence through a charging cable.

2. A three-stage high heat dissipation wireless charging device according to claim 1, characterized in that: The first heat sink also includes a first charging interface, a charging cable fixing seat and a charging cable head accommodating base. The charging cable connected to the first heat sink passes through the first charging interface and is connected to the magnetic induction coil assembly. The charging cable is fixed to the charging cable fixing seat by a fastener. At this time, the end cable head of the charging cable is placed on the charging cable head accommodating base.

3. A three-stage high heat dissipation wireless charging device according to claim 1, characterized in that: The magnetic induction coil assembly includes a magnet, foam and an induction coil assembly. The first lower cover of the first heat sink is provided with a two-step stepped groove, the groove includes a first step bottom surface and a second step bottom surface, the foam is placed under the magnet, the magnet and foam are placed on the first step bottom surface and the upper part of the magnet is in contact with the first upper cover, and the induction coil assembly is placed on the second step bottom surface.

4. A three-stage high heat dissipation wireless charging device according to claim 3, characterized in that: The groove further includes a first step side surface and a second step side surface, the outer ring of the magnet is loosely matched with the first step side surface, and the outer ring of the induction coil assembly is loosely matched with the second step side surface.

5. The three-stage high heat dissipation wireless charging device according to claim 1, characterized in that: The second heat sink also includes a second charging interface, and the charging cable connected to the second heat sink passes through the second charging interface and is connected to the charging mainboard.

6. A three-stage high heat dissipation wireless charging device according to claim 5, characterized in that: The second heat sink also includes a charging mainboard socket, which is composed of a boss extending from the inner wall of the second lower cover, the boss is an L-shaped boss, the charging mainboard has a slot corresponding to the boss, the charging mainboard is placed on the charging mainboard socket and the slot is engaged with the boss.

7. A three-stage high heat dissipation wireless charging device according to claim 6, characterized in that: The second heat sink also includes a pressing piece, which is a stepped cylinder with a small upper part and a large lower part. The bottom surface of the large diameter end of the pressing piece is in contact with the charging mainboard, and the upper surface of the large diameter end of the pressing piece is in contact with the bottom of the second upper cover. The second upper cover is provided with a through hole, and the small diameter end of the pressing piece is passed through the through hole. The second upper cover presses the charging mainboard onto the charging mainboard socket through the pressing piece.

8. The three-stage high heat dissipation wireless charging device according to claim 1, characterized in that: The third heat sink also includes a third charging interface, and the charging line connected to the third heat sink passes through the third charging interface and is connected to the power mainboard.

9. The three-stage high heat dissipation wireless charging device according to claim 1, characterized in that: The third heat sink also includes a charging connector, which is connected to the power supply mainboard to supply power to the power supply mainboard.

10. The three-stage high heat dissipation wireless charging device according to claim 1, characterized in that: The first heat sink, the second heat sink and the third heat sink are arranged in the same horizontal straight line.

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