CN220544750U

CN220544750U - Wireless charging device with multiple coils

Info

Publication number: CN220544750U
Application number: CN202322200345.9U
Authority: CN
Inventors: 刘欣雨; 刘翼鹏; 张宝峰
Original assignee: Delphi Electrical Centers Shanghai Co Ltd
Current assignee: Delphi Electrical Centers Shanghai Co Ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-02-27
Anticipated expiration: 2033-08-16

Abstract

The utility model relates to a wireless charging device with multiple coils, which comprises an upper shell and a lower shell which are connected with each other to form a protective shell, wherein the interior of the protective shell sequentially comprises a coil, a gasket and a main control PCB (printed circuit board) from top to bottom, a fixing groove matched with the coil is formed in the gasket, an inclination angle is formed in the bottom of the fixing groove, the coil is positioned in the fixing groove, the coil comprises a first sub-coil, a second sub-coil and a third sub-coil, the second sub-coil is stacked above the first sub-coil in a staggered manner, and the third sub-coil is stacked above the second sub-coil in a staggered manner. Compared with the prior art, the utility model has the advantages of less blind spots, high energy conversion efficiency and the like.

Description

Wireless charging device with multiple coils

Technical Field

The utility model relates to the field of wireless charging devices, in particular to a wireless charging device with multiple coils.

Background

With the development of wireless charging technology, the wireless mobile phone charger is also widely applied to automobiles, and the wireless charging of the automobiles brings convenience in use, can embody the technological sense of the automobiles, and increases the experience of customers.

For example, chinese patent CN202695109U discloses a transmitting coil winding structure for a rectangular positioning-free wireless charger, which comprises a heat sink, a ferrite magnetic sheet attached to the heat sink, and a coil winding attached to the ferrite magnetic sheet, wherein the coil winding is a three-dimensional structure body formed by dividing a plurality of rectangular coils into at least two layers and arranging the layers in a delta shape from bottom to top. The utility model adopts the three-dimensional structure body which is formed by dividing the coil windings into at least two layers by a plurality of rectangular coils and arranging the rectangular coils according to the shape of the Chinese character 'pin' from bottom to top, so that the wireless charger and the charged equipment can be effectively charged without accurate positioning, and a plurality of equipment can be charged simultaneously.

However, the wireless charging device has a certain charging blind spot, when equipment is placed at the blind spot position, the charging is stopped and the charging efficiency is low, so that the problems of increased heating amount and the like are caused, and the experience of a client is reduced.

Disclosure of Invention

The utility model aims to overcome the defects that in the prior art, a certain charging blind spot exists, when equipment is placed at the blind spot position, the charging is stopped, the charging efficiency is low, the heating capacity is increased, and the like, and the experience of a customer is reduced, so that the wireless charging device with multiple coils is provided.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a wireless charging device with multiple coils, includes interconnect's last casing and lower casing, constitutes protective housing, the inside coil, gasket and the main control PCB board of including in proper order from top to bottom of protective housing, be equipped with on the gasket with coil matched with fixed slot, the tank bottom of fixed slot is equipped with the inclination, the coil is located the fixed slot, the coil includes first sub-coil, second sub-coil and third sub-coil, the dislocation of second sub-coil stacks in the top of first sub-coil, the dislocation of third sub-coil stacks in the top of second sub-coil.

Preferably, a shielding PCB is arranged above the coil, and the shielding PCB is positioned between the upper shell and the coil.

Preferably, a temperature sensor for monitoring the temperature of the coil is arranged below the shielding PCB, and the temperature sensor is connected with an alarm.

Preferably, a magnetic sheet is arranged between the main control PCB and the gasket, and the magnetic sheet is fixed below the gasket.

Preferably, foam is arranged between the main control PCB and the magnetic sheet, and is adhered above the PCB.

Preferably, the quantity of the foam is a plurality of, and each foam is uniformly distributed above the main control PCB.

Preferably, the gasket is provided with a PIN needle, the gasket is provided with a connecting hole, the PIN needle is in interference fit with the connecting hole, the main control PCB board is connected with the lower end of the PIN needle, and the coil is connected with the upper end of the PIN needle.

Preferably, the apparatus further comprises a heat radiation fan detachably fixed to the lower case.

Preferably, an air duct is arranged in the protective shell, and the cooling fan is positioned at the air inlet position of the air duct.

Compared with the prior art, the utility model has the following advantages:

(1) According to the scheme, the first sub-coil, the second sub-coil and the third sub-coil are sequentially staggered and stacked from bottom to top, the coils are placed in the fixed slots inclined at the bottoms of the slots, the corresponding coils located in the fixed slots are obliquely arranged, the coils are integrally located in the protective housing, the mobile phone is placed above the protective housing, namely the coils, and the mobile phone is wirelessly charged by utilizing the electromagnetic induction principle. The coils are sequentially obliquely stacked, so that the first sub-coils, the second sub-coils and the third sub-coils are more densely covered, the hole area of the whole coil is smaller, blind spots of the coils are fewer, the number of the blind spots is effectively reduced, and the energy conversion efficiency is improved.

(2) According to the scheme, the shielding PCB is arranged above the coil, so that the magnetic field generated by the coil can be effectively protected from being interfered by the external environment, and the device has good electromagnetic shielding performance.

(3) According to the scheme, the temperature sensor is arranged below the shielding PCB, the temperature of the coil is monitored, when the temperature of the coil is detected to be too high, the alarm gives an alarm, the coil is controlled, the over-temperature protection function is achieved, and the safety of the wireless charging device is improved.

(4) According to the scheme, the cooling fan is arranged below the lower shell and can be detachably fixed in the air duct, whether the fan is additionally arranged or not can be selected according to different cooling requirements, and the cooling capacity and the adaptability of the device are improved.

Drawings

Fig. 1 is an exploded view of a wireless charging device provided by the present utility model;

FIG. 2 is a top view of a coil distribution provided by the present utility model;

FIG. 3 is a front view of a distribution of coils provided by the present utility model;

fig. 4 is a top view of a wireless charging device provided by the present utility model;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

in the figure: 1. the upper shell comprises 2 parts of a shielding PCB, 3 parts of coils, 31 parts of a first sub-coil, 32 parts of a second sub-coil, 33 parts of a third sub-coil, 4 parts of PIN needles, 5 parts of gaskets, 6 parts of magnetic sheets, 7 parts of foam, 8 parts of a main control PCB, 9 parts of a lower shell, 10 parts of a cooling fan, 11 parts of screws.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Example 1

The embodiment provides a wireless charging device with multiple coils, as shown in fig. 1-5, including upper casing 1 and lower casing 9 of interconnect, constitute the protecting sheathing, the protecting sheathing is inside to including coil 3, gasket 5 and main control PCB board 8 from top to bottom in proper order, be equipped with on the gasket 5 with coil 3 matched with fixed slot, the tank bottom of fixed slot is equipped with the inclination, coil 3 is located the fixed slot, coil 3 includes first sub-coil 31, second sub-coil 32 and third sub-coil 33, second sub-coil 32 dislocation stack is in the top of first sub-coil 31, third sub-coil 33 dislocation stack is in the top of second sub-coil 32.

Working principle: the first sub-coil 31, the second sub-coil 32 and the third sub-coil 33 are sequentially staggered and stacked from bottom to top, the coils are placed in the fixed slots with the slots inclined, the corresponding coils located in the fixed slots are obliquely arranged, the whole coils are located in the protective housing, the mobile phone is placed above the protective housing, namely the coil 3, and the mobile phone is wirelessly charged by utilizing the electromagnetic induction principle.

This scheme is through with first sub-coil 31, second sub-coil 32 and third sub-coil 33 from bottom to top dislocation stack arrangement in proper order, simultaneously place the coil in the fixed slot of tank bottom slope, the coil slope that corresponds is located the fixed slot sets up, the coil wholly is located the inside of protecting sheathing, places the cell-phone in protecting sheathing i.e. the top of coil 3, utilizes electromagnetic induction principle to carry out wireless charging to the cell-phone. The coils are sequentially inclined and stacked, so that the first sub-coil 31, the second sub-coil 32 and the third sub-coil 33 are more densely covered, the hole area of the whole coil 3 is smaller, blind spots of the coils are fewer, the number of the blind spots is effectively reduced, and the energy conversion efficiency is improved.

In this embodiment, as shown in fig. 2-3, the left-side wire harness of the second sub-coil 32 is located above the center hole of the first sub-coil 31, the left-side wire harness of the third sub-coil 33 is located above the center hole of the second sub-coil 32, and there is a portion where the left-side wire harness of the third sub-coil 33 and the right-side wire harness of the first sub-coil 31 overlap in the vertical direction.

As a preferred embodiment, a shielding PCB 2 is provided above the coil 3, the shielding PCB 2 being located between the upper case 1 and the coil 3. A temperature sensor for monitoring the temperature of the coil 3 is arranged below the shielding PCB 2, and the temperature sensor is connected with an alarm.

Through setting up shielding PCB board in the top of coil, can effectively protect the magnetic field that the coil produced to receive the interference of external environment, make the device have good electromagnetic shield performance. Further, set up temperature sensor in shielding PCB board's below, monitor the temperature of coil, when detecting the high temperature of coil, the alarm reports to the police, controls the coil, plays the effect of overtemperature protection, improves wireless charging device's security.

Specifically, be equipped with magnetic sheet 6 between master control PCB board 8 and the gasket 5, magnetic sheet 6 is fixed in the below of gasket 5.

Foam 7 is arranged between the main control PCB 8 and the magnetic sheet 6, and the foam 7 is adhered above the PCB 8. The quantity of the foam 7 is a plurality of, and each foam 7 is evenly distributed above the main control PCB 8. In this embodiment, through set up a plurality of bubble cottons 7 between main PCB board 8 and magnetic sheet 6, play buffering shock attenuation's effect, play better guard action to main PCB board 8.

Specifically, be equipped with PIN needle 4 on the gasket 5, be equipped with the connecting hole on the gasket 5, PIN needle 4 and connecting hole interference fit, the lower extreme of PIN needle 4 is connected to master control PCB board 8, the upper end of PIN needle 4 is connected to coil 3. The main components are connected through the PIN needle 4, so that the stability of the device structure is ensured.

As a preferred embodiment, the device further comprises a heat radiation fan 10, and the heat radiation fan 10 is detachably fixed to the lower case 9. An air duct is arranged in the protective shell, and the cooling fan 10 is positioned at the air inlet position of the air duct. Through setting up radiator fan in the below of lower casing to can dismantle radiator fan and fix in the wind channel, can be according to the heat dissipation demand of difference, whether select to install the fan additional, improve device heat dissipation ability and adaptability.

Specifically, coil 3 is fixed with gasket 5 through 3M glues, PIN needle 4 is pressed into gasket 5 through interference fit, coil 3 is connected with PIN needle 4 upper end through the welding, master control PCB board 8 is connected with PIN needle 4 lower extreme through the welding, magnetic sheet 6 is fixed with gasket 5 through 3M glues, bubble cotton 7 is mounted on master control PCB board 8, and provide cushioning effect in the middle of master control PCB and magnetic sheet, shielding PCB board 2 is fixed on gasket 5 through the locating hole, be connected with master control PCB board 8 through the connector, shielding PCB board 2 lower surface has NTC temperature sensor to be used for monitoring coil 3 temperature, lower casing 9 is joined in marriage with last casing 1 pair, it is fixed through screw 11, radiator fan 10 is fixed on lower casing 9, the wind channel mouth is joined in marriage with last casing 1 pair. The wireless charging is realized by transmitting energy between a transmitting coil of the wireless charging equipment and a receiving coil of the charged equipment through a magnetic field by an electromagnetic induction principle, so as to achieve the effect of wireless charging of the equipment

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims

1. The utility model provides a wireless charging device with multiple coils, includes casing (1) and casing (9) down of interconnect, constitutes protective housing, its characterized in that, the inside coil (3), gasket (5) and main control PCB board (8) that include in proper order from top to bottom of protective housing, be equipped with on gasket (5) with coil (3) matched with fixed slot, the tank bottom of fixed slot is equipped with the inclination, coil (3) are located the fixed slot, coil (3) include first sub-coil (31), second sub-coil (32) and third sub-coil (33), second sub-coil (32) dislocation stack is in the top of first sub-coil (31), third sub-coil (33) dislocation stack is in the top of second sub-coil (32).

2. A wireless charging device with multiple coils according to claim 1, characterized in that a shielding PCB (2) is arranged above the coils (3), the shielding PCB (2) being located between the upper housing (1) and the coils (3).

3. The wireless charging device with multiple coils according to claim 2, wherein a temperature sensor for monitoring the temperature of the coil (3) is arranged below the shielding PCB (2), and the temperature sensor is connected with an alarm.

4. The wireless charging device with multiple coils according to claim 1, wherein a magnetic sheet (6) is arranged between the main control PCB (8) and the gasket (5), and the magnetic sheet (6) is fixed below the gasket (5).

5. The wireless charging device with multiple coils according to claim 4, wherein foam (7) is arranged between the main control PCB (8) and the magnetic sheet (6), and the foam (7) is adhered above the main control PCB (8).

6. The wireless charging device with multiple coils according to claim 5, wherein the number of foam (7) is plural, and each foam (7) is uniformly distributed above the main control PCB (8).

7. The wireless charging device with the multiple coils according to claim 1, wherein the gasket (5) is provided with a PIN needle (4), the gasket (5) is provided with a connecting hole, the PIN needle (4) is in interference fit with the connecting hole, the main control PCB (8) is connected with the lower end of the PIN needle (4), and the coil (3) is connected with the upper end of the PIN needle (4).

8. A wireless charging device with multiple coils according to claim 1, characterized in that the device further comprises a radiator fan (10), said radiator fan (10) being detachably fastened to the lower housing (9).

9. The wireless charging device with multiple coils according to claim 8, wherein an air duct is arranged in the protective housing, and the heat radiation fan (10) is located at an air inlet position of the air duct.