CN211907201U

CN211907201U - Wireless charging coil module and wireless charging system

Info

Publication number: CN211907201U
Application number: CN202020286170.1U
Authority: CN
Inventors: 徐喜红; 张文银
Original assignee: Anjie Wireless Technology Suzhou Co ltd
Current assignee: Anjie Wireless Technology Suzhou Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-11-10
Anticipated expiration: 2030-03-10

Abstract

The utility model provides a wireless charging coil module and wireless charging system, wherein, the coil module includes: the coil is arranged on the tray; the tray is a heat-conducting plastic tray, a wire groove for accommodating a coil is formed in the tray, the size of the wire groove is slightly larger than the size of the wire diameter of the coil, the coil is formed by spirally winding two wires respectively, one wire is positioned in a gap formed by winding the other wire, one end of any wire is vertically extended on the inner side of the coil back to the tray and horizontally extends towards one side edge of the tray, and the other end of the wire is vertically extended on the outer side of the coil back to the tray and horizontally extends towards the edge vertical to one side edge. The utility model discloses a thermal conductive plastic is as the tray, when playing the fixed coil of installation, and the high temperature that the coil produced still makes the temperature balanced through the thermal conductive plastic tray. Meanwhile, by adopting the bifilar winding, shunting can be realized, and the problem of overheating caused by large current is avoided.

Description

Wireless charging coil module and wireless charging system

Technical Field

The utility model relates to an electric automobile technical field especially relates to a wireless charging coil module and wireless charging system.

Background

With the development of scientific technology and the current situation of coping with environmental problems, new energy automobiles have been rapidly developed in recent years. An electric automobile in the new energy automobile adopts a high-energy-density battery pack as a power source and realizes electric energy conversion by utilizing clean energy. At present, a battery pack of an electric vehicle mainly depends on a charging pile and is charged in a wired mode, but the convenience and the universality of the wired charging mode are limited to a certain extent. Therefore, the existing electric vehicle can be charged by adopting a wireless charging system.

The key technology of wireless charging is actually receiving and transmitting, and the coil plays a role in receiving and transmitting, and when the coil works, the coil can continuously generate heat, so that the temperature of a wireless charging system is increased. Simultaneously, to wireless charging coil, still require it to conveniently work a telephone switchboard. Therefore, it is necessary to provide a further solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wireless charging coil module to overcome the not enough that exists among the prior art.

In order to solve the technical problem, the technical scheme of the utility model is that:

a wireless charging coil module, comprising: the coil comprises a tray and a coil arranged on the tray;

the tray is a heat-conducting plastic tray, the heat conductivity coefficient of the tray is 0.3-2W/MK, the tray is a rectangular tray, a wire groove for accommodating the coil is formed in the tray, the size of the wire groove is slightly larger than the wire diameter size of the coil, the coil is formed by winding two wires in a spiral mode respectively, one wire is positioned in a gap formed by winding the other wire, one end of any wire is arranged in the inner side of the coil, back to the tray, extends vertically and horizontally towards the edge of one side of the tray, the other end of the wire is arranged in the outer side of the coil, back to the tray, extends vertically and horizontally towards the edge vertical to the edge of the one side, and two ends of any wire are respectively connected with a wiring head.

As the utility model discloses a wireless charging coil module's improvement, the coefficient of heat conductivity of tray is 0.5-1.5W/MK.

As the utility model discloses a wireless charging coil module's improvement, the tray is through the mode integrated into one piece of moulding plastics.

As the utility model discloses a wireless charging coil module's improvement, the edge all around of tray still is provided with dorsad the perpendicular turn-ups that extends of tray.

As the utility model discloses a wireless charging coil module's improvement, two wires are the litz line.

As the utility model discloses a wireless charging coil module's improvement, the connector lug of two wires has the same or different wiring direction.

As the utility model discloses a wireless charging coil module's improvement, the connector lug includes: and a connection portion and a wire loop connected to an end portion of the corresponding coil through the connection portion.

As the utility model discloses a wireless charging coil module's improvement, connecting portion one end suit in the coil end portion that corresponds, the other end suit in on the wiring ring.

a wireless charging system, comprising: the wireless charging device comprises a first wireless charging device installed on the vehicle-mounted side and a second wireless charging device installed on the ground side, wherein the second wireless charging device comprises the coil module.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a wireless charging coil module adopts thermal conductive plastic as the tray, and its machine-shaping is simple, and when playing installation fixed coil, the high temperature that the coil produced still makes the temperature equilibrium through the thermal conductive plastic tray to realize the conduction heat dissipation, do not influence the magnetic field and the electric field of coil itself, and remain plastic ductility itself. Therefore, the problems that the temperature of the coil is accumulated continuously, part of coil trays are deformed, and the efficiency is reduced due to overhigh temperature are solved effectively. And simultaneously, the utility model discloses a wireless charging coil module adopts the bifilar wire winding, can realize the reposition of redundant personnel, avoids the overheated problem that the heavy current leads to.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is the utility model discloses a perspective view of a wireless charging coil module embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a wireless charging coil module, which can be applied to a wireless charging device at a ground end or a vehicle end.

The coil module of this embodiment includes: a tray 1 and a coil 2 provided on the tray 1.

The tray 1 is a heat-conducting plastic tray, and the heat conductivity coefficient is 0.3-2W/MK. Preferably, the tray 1 has a thermal conductivity of 0.5-1.5W/MK. Further preferably, the thermal conductivity of the tray 1 is 0.8-1W/MK. The tray 1 is a rectangular tray. In one embodiment, the tray 1 is integrally molded by injection molding.

The tray 1 is provided with a wire groove for accommodating the coil 2, the wire groove is spirally arranged on one surface of the tray 1 in a spiral mode, and the size of the wire groove is slightly larger than the wire diameter size of the coil 2. The technical advantages of the tray 1 are: the structure is simple, the size and the thickness are small, the material cost is low, and the mass and automatic production can be realized; and the basic characteristics of common plastics can be realized by using the heat-conducting plastics, and the heat-conducting plastics have the soaking and heat-radiating capabilities of metal.

And because the tray 1 adopts heat conduction plastics, the high temperature that coil 2 produced still makes the temperature equilibrium through heat conduction plastics tray 1 to realize the conduction heat dissipation, do not influence the magnetic field and the electric field of coil 2 itself, and keep the ductility of plastic itself. Therefore, the problems that the temperature of the coil 2 is accumulated continuously, the tray 1 of a part of the coil 2 is deformed, and the efficiency is reduced due to overhigh temperature are solved effectively.

In addition, tray 1's all edges still are provided with the turn-ups 11 of 1 self vertical extension of tray dorsad, can play spacing effect through setting up turn-ups 11 to do benefit to the assembly of wireless charging coil module.

In order to facilitate the wiring of the coil 2, the lead structure of the coil 2 is also optimized and designed in the embodiment.

Specifically, the coil 2 is formed by spirally winding two wires, one of which is located in a gap formed by winding the other wire. In one embodiment, the two wires are litz wires. So set up, can realize the reposition of redundant personnel to avoid the overheated problem that heavy current leads to

One end 21 of any one wire extends perpendicularly away from the tray on the inner side of the coil 2 and extends horizontally toward one side edge of the tray, and the other end 22 extends perpendicularly away from the tray on the outer side of the coil 2 and extends horizontally toward the edge perpendicular to the one side edge. The vertical extension facilitates the threading of the leads through other functional structure layers, such as shielding layers, magnetic material layers, etc.

Meanwhile, in order to be electrically connected with an external power supply, two ends of any one wire are respectively connected with a connector lug, and the connector lugs of the two wires can have the same or different wiring directions in order to facilitate wiring.

In one embodiment, the connector lug 23 includes: a connection portion 231 and a wire loop 232, wherein the wire loop 232 is connected to the end of the corresponding coil 23 via the connection portion 231. The connecting portion 231 is a structure passing through one axis, and one end of the connecting portion 231 is sleeved on the end portion of the corresponding coil 23, and the other end is sleeved on the connecting wire ring. The wire connecting ring 232 is made of a conductive material, one end of which is inserted into the connecting portion 231 and electrically connected to the coil 23, and the other end of which is provided with a through hole suitable for connection.

Based on the same inventive concept, an embodiment of the present invention further provides a wireless charging system, which includes: the wireless charging device comprises a first wireless charging device installed on the vehicle-mounted side and a second wireless charging device installed on the ground side, wherein the second wireless charging device comprises the coil module.

To sum up, the utility model discloses a wireless charging coil module adopts thermal conductive plastic as the tray, and its machine-shaping is simple, when playing installation fixed coil, and the high temperature that the coil produced still makes the temperature equilibrium through the thermal conductive plastic tray to realize the conduction heat dissipation, do not influence the magnetic field and the electric field of coil itself, and remain plastic ductility itself. Therefore, the problems that the temperature of the coil is accumulated continuously, part of coil trays are deformed, and the efficiency is reduced due to overhigh temperature are solved effectively. And simultaneously, the utility model discloses a wireless charging coil module adopts the bifilar wire winding, can realize the reposition of redundant personnel, avoids the overheated problem that the heavy current leads to.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a wireless charging coil module which characterized in that, the coil module includes: the coil comprises a tray and a coil arranged on the tray;

2. The wireless charging coil module of claim 1, wherein the tray has a thermal conductivity of 0.5-1.5W/MK.

3. The wireless charging coil module of claim 1, wherein the tray is integrally formed by injection molding.

4. The wireless charging coil module of claim 1, wherein the tray is further provided with a flange extending vertically away from the tray at a peripheral edge of the tray.

5. The wireless charging coil module of claim 1, wherein the two wires are litz wires.

6. The wireless charging coil module of claim 1, wherein the connector lugs of the two wires have the same or different connection directions.

7. The wireless charging coil module of claim 1, wherein the connector lug comprises: and a connection portion and a wire loop connected to an end portion of the corresponding coil through the connection portion.

8. The wireless charging coil module of claim 7, wherein one end of the connecting portion is sleeved on the corresponding coil end portion, and the other end is sleeved on the wiring ring.

9. A wireless charging system, comprising: a first wireless charging device mounted on a vehicle side and a second wireless charging device mounted on a ground side, the second wireless charging device comprising the coil module according to any one of claims 1 to 8.