CN216684093U

CN216684093U - Wireless receiving terminal that charges

Info

Publication number: CN216684093U
Application number: CN202122731697.8U
Authority: CN
Inventors: 冯颖盈; 姚顺; 罗耀文; 肖伟军
Original assignee: Shenzhen Vmax Power Co Ltd
Current assignee: Shenzhen Vmax Power Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-06-07
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a wireless charging receiving end which comprises a shell, an upper cover arranged above the shell, a bottom shell arranged at the bottom of the shell, a coil winding and magnetic core assembly arranged between the bottom shell and the shell, a PCBA plate arranged between the upper cover and the shell, and a heat dissipation water channel arranged on the shell, wherein the heat dissipation water channel can dissipate heat of the PCBA plate arranged above the shell, the coil winding and the magnetic core assembly arranged below the shell. Compared with the prior art, the utility model adopts the common water channel cooling system, reduces the volume of the product and improves the stability and the heat dissipation of the product.

Description

Wireless receiving terminal that charges

Technical Field

The utility model relates to the field of wireless charging of pure electric and hybrid electric vehicles, in particular to a wireless charging receiving end.

Background

At present, along with the popularization of the wireless charging technology of the electric automobile, compared with the wired charging technology, the energy transmission does not need to use the plug connection of a charging gun any more, so that the charging gun is more convenient and safer. The wireless charging technology is based on an inductive coupling technology, and energy is exchanged between a transmitting component and a receiving coil. And the current wireless charging stake receiving terminal has more or less performance poor, and the heat dissipation is not enough, space utilization low grade defect, influences user experience.

Therefore, how to design a wireless charging receiving terminal to improve the performance of the wireless charging receiving terminal during operation is an urgent technical problem to be solved in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wireless charging receiving terminal, aiming at the problem that the wireless charging receiving terminal in the prior art is poor in performance.

The technical scheme includes that the wireless charging receiving end comprises a shell, an upper cover arranged above the shell, a bottom shell arranged at the bottom of the shell, a coil winding and magnetic core assembly arranged between the bottom shell and the shell, a PCBA plate arranged between the upper cover and the shell, and a heat dissipation water channel arranged on the shell, wherein the heat dissipation water channel can dissipate heat of the PCBA plate arranged above the shell, the coil winding and the magnetic core assembly arranged below the shell.

The cooling water channel is connected with the water inlet and the water outlet respectively, and cooling liquid can flow in from the water inlet and flow out from the water outlet after passing through the cooling water channel.

Furthermore, the winding device also comprises a wiring groove arranged on the bottom shell, and the coil winding is arranged in the wiring groove.

Further, still including locating WIFI board on the casing, the WIFI board is located the casing outside.

Further, still including locating the antenna protection casing in the casing outside, the WIFI board is fixed in inside the antenna protection casing.

Further, still including locating switching copper bar on the casing, the one end of switching copper bar is fixed in on the PCBA board, the coil winding with the switching copper bar is connected and is fixed in on the switching copper bar, make it with the PCBA board is connected.

The vehicle-mounted power supply further comprises an output connector and a low-voltage signal connector which are arranged on the outer side of the shell, wherein the output connector and the low-voltage signal connector are connected with a vehicle end and used for power supply and information interaction.

Further, the coil winding is formed by litz wire winding.

Further, the magnetic core assembly is formed by mutually splicing a plurality of blocky magnetic cores, and a notch for wiring is further formed in the magnetic core assembly.

Further, the WIFI board avoids the metal part setting of the wireless charging receiving end.

Compared with the prior art, the utility model has at least the following beneficial effects:

1. a wiring groove is formed in the chassis, and the coil winding is arranged in the wiring groove, so that the path and the distance of the litz wires can be effectively controlled;

2. the WIFI board is fixed in the antenna protective cover, and the antenna protective cover is assembled on the outer side of the shell and is far away from the metal material, so that signal receiving is facilitated;

3. be equipped with the heat dissipation water course on the casing, can dispel the heat for coil winding, magnetic core subassembly and PCBA board, improved the heat dispersion of device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of the installation of a coil winding, a chassis and a magnetic core assembly of a wireless charging receiving terminal of the present invention;

fig. 2 is a schematic structural diagram of a wireless charging receiving terminal according to the present invention;

FIG. 3 is a schematic view of a heat sink channel of the wireless charging receiver of the present invention;

FIG. 4 is a schematic view of the connection between the coil winding of the wireless charging receiving terminal and the PCBA board according to the present invention;

wherein, 1 is the casing, 11 is the heat dissipation water course, 12 is the water inlet, 13 is the delivery port, 14 is output connector, 15 is low pressure signal connector, 16 is the WIFI board, 17 is the antenna protection casing, 18 is the switching copper bar, 2 is the drain pan, 21 is the trough, 3 is the upper cover, 4 is the magnetic core subassembly, 5 is the coil winding, 6 is the PCBA board.

Detailed Description

The terms "first," "second," and "third" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance, the term "plurality" referring to two or more unless explicitly limited otherwise. The terms "mounted," "connected," and "fixed" are used broadly and encompass any connection, either fixed or removable or integral, for example, and also mean either directly or indirectly connected through intervening media. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, but do not indicate or imply that the referred device or unit must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the specification, the descriptions of the terms "one embodiment," "some embodiments," "a specific embodiment," etc., mean that a particular feature, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. And the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.

The electric vehicle wireless charging technology is generally that a receiving end is installed on a chassis of an electric vehicle, an induced current is generated through a magnetic field generated by a transmitting end installed on the ground or underground, and the induced current is rectified into direct current to charge a battery of the electric vehicle. The existing wireless charging receiving end has the defects of poor performance, insufficient heat dissipation, low space utilization rate and the like more or less. The utility model has the idea that the heat radiation channel is arranged on the shell, and the heat radiation channel is used for radiating the wireless charging receiving end so as to improve the heat radiation performance of the device.

Referring to fig. 2, the wireless charging receiver according to the present invention includes a housing 1, an upper cover 3 disposed above the housing 1, a bottom case 2 mounted at the bottom of the housing 1, a coil winding 5 and a magnetic core assembly 4 disposed between the bottom case 2 and the housing 1, and a PCBA board 6 disposed between the upper cover 3 and the housing 1. The bottom shell 2 is arranged at the bottommost end of the wireless charging receiving end, is used for fixing the coil winding 5 and plays a supporting role, and is generally made of plastic materials; a wiring groove 21 is arranged on the bottom shell 2, the coil winding 5 is arranged on the bottom shell 2 and fixed through the wiring groove 21 on the bottom shell 1, and can generate alternating current under the action of a magnetic field, and the alternating current can be supplied to a high-voltage battery of an automobile for charging after being rectified; the PCBA board 6 is provided with a rectifying circuit for receiving the alternating current sent by the coil winding 5 and rectifying the alternating current to charge a high-voltage battery of the automobile; the magnetic core assembly 4 is arranged above the coil winding 5 and covers the coil winding 5, and is used for reducing the magnetic resistance between the receiving end and the transmitting end, enabling the magnetic flux generated by the transmitting end to be more concentrated on a path coupled with the magnetic flux of the receiving end, increasing the coupling coefficient, improving the transmission capability and facilitating the generation of alternating current; the cover 3 is provided at the very top of the device and is joined to the housing 1 for enclosing the PCBA board 6 together with the housing 1, typically of a metal material, preferably aluminium, which absorbs magnetic leakage and prevents it from affecting the operating circuitry above the receiving end.

Furthermore, a heat dissipation water channel 11 is arranged on the shell 1, and cooling liquid is injected into the heat dissipation water channel 11, so that heat can be absorbed through the cooling liquid and dissipated. When the wireless charging receiving end works, the coil winding 5 generates heat under the action of a magnetic field, meanwhile, the PCBA board 16 also generates heat when rectification is carried out, and at the moment, the cooling liquid can absorb the heat generated by the coil winding 5 and the PCBA board 16, so that the heat dissipation effect is achieved. The cooling liquid is preferably water, has high specific heat capacity, can absorb more heat, improves the heat dissipation effect and has lower cost.

Referring to fig. 3, in a preferred embodiment of the present invention, a water inlet 12 and a water outlet 13 are disposed on a side wall of the housing 1, and the water inlet 12 and the water outlet 13 are installed on the same side of the housing 1, so as to facilitate the overall layout of the device, and the heat dissipation water channel 11 is connected to the water inlet 12 and the water outlet 13, respectively, so that the cooling liquid can flow into the heat dissipation water channel 11 from the water inlet 12 and flow out from the water outlet 13 after passing through the heat dissipation water channel 11. Through the arrangement of the water inlet 12 and the water outlet 13, the exchange of cooling liquid in the heat dissipation water channel 11 can be facilitated, and the heat dissipation effect is further improved.

Furthermore, the heat dissipation water channel 11 can be arranged along the coil winding 5 and the PCBA board 16 as much as possible, the width of the heat dissipation water channel 11 is increased at a place where more heat is generated, and the cooling liquid in the heat dissipation water channel 11 is distributed at a position where heat dissipation is needed more, so as to achieve a better heat dissipation effect.

Referring to fig. 1, a wire slot 21 for mounting the coil winding 5 is disposed on the bottom case 2, and has the same shape as the coil winding 5, and is a disk shape, which can effectively control the path and the distance of the coil winding 5, and plays a role in fixing.

Still be equipped with WIFI board 16 on casing 1, it is used for the receipt and the transmission of signal, and WIFI board 16 is installed in the outside of casing 1 and is kept away from the metal part setting of wireless charging receiving terminal, avoids metal material to cause the interference to the signal, does benefit to the receipt of signal.

Further, be equipped with an antenna protection casing 17 in the lateral wall outside of casing 1, it adopts non-metallic material, and WIFI board 16 is installed in this antenna protection casing 17 to further avoid the influence that outside metallic material caused to 16 signal transmission of WIFI board.

Referring to fig. 4, the housing 1 is further provided with an adapting copper bar 18, one end of the adapting copper bar 18 is fixed on the PCBA board 16, the coil winding 5 is connected to the adapting copper bar 18 through the wiring groove 21 and is fixed on the PCBA board 16 through the adapting copper bar, so that the coil winding 5 and the PCBA board 16 are integrated into a whole.

Further, an output connector 14 and a low-voltage signal connector 15 are arranged on the outer side of the shell 1, are used for connecting with a vehicle end, and are used for power supply and information interaction.

Further, magnetic core component 4 is formed by a plurality of cubic magnetic cores of mutual concatenation, still is equipped with the breach that is used for walking the line on magnetic core component 4. In a preferred embodiment of the present invention, a magnetic core covering the gap is further disposed at the gap of the magnetic core assembly 4 to reduce magnetic leakage at the gap.

The above embodiments are only intended to illustrate specific embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and changes can be made without departing from the spirit of the present invention, and these modifications and changes should fall into the protection scope of the present invention.

Claims

1. The utility model provides a wireless receiving terminal that charges, includes the casing, locates the upper cover of casing top, install in the drain pan of casing bottom and locating coil winding and magnetic core subassembly between drain pan and the casing, locate PCBA board between upper cover and the casing, its characterized in that still including locating heat dissipation water course on the casing, the heat dissipation water course can be to being located PCBA board of casing top, being located the heat dissipation of coil winding and magnetic core subassembly of casing below.

2. The wireless charging receiving end according to claim 1, further comprising a water inlet and a water outlet disposed on the housing, wherein the water inlet and the water outlet are disposed on a same side wall of the housing, and the heat dissipation channel is connected to the water inlet and the water outlet, respectively, and allows a cooling fluid to flow in from the water inlet, pass through the heat dissipation channel, and then flow out from the water outlet.

3. The wireless charging receiver of claim 1, further comprising a wiring slot disposed on the bottom housing, wherein the coil winding is mounted in the wiring slot.

4. The wireless charging receiving end of claim 1, further comprising a WIFI board disposed on the housing, wherein the WIFI board is disposed outside the housing.

5. The wireless charging receiving end of claim 4, further comprising an antenna protection cover arranged on the outer side of the shell, wherein the WIFI board is installed inside the antenna protection cover.

6. The wireless charging receiver of claim 1, further comprising a switching copper bar disposed on the housing, wherein one end of the switching copper bar is fixed on the PCBA board, and the coil winding is connected to the switching copper bar and fixed on the switching copper bar, so as to connect to the PCBA board.

7. The wireless charging receiving end of claim 1, further comprising an output connector and a low voltage signal connector arranged outside the housing, wherein the output connector and the low voltage signal connector are connected with a vehicle end and used for power supply and information interaction.

8. The wireless charging receiver of claim 1, wherein the coil winding is formed by litz wire winding.

9. The wireless charging receiving end according to claim 1, wherein the magnetic core assembly is formed by splicing a plurality of block-shaped magnetic cores, and a notch for routing is further formed in the magnetic core assembly.

10. The wireless charging receiving end of claim 4, wherein the WIFI board is disposed to avoid a metal portion of the wireless charging receiving end.