Receiving end coil quick connection module

Abstract

The utility model relates to a quick connection module for a receiving end coil. The quick connection module comprises a magnetic sheet, at least one layer of coil body is arranged on one end face of the magnetic sheet, and coil leads are led out of the magnetic sheet from two ends of the coil body; terminal wires are connected to the ends, away from the coil body, of the coil leads; a welding part is welded between the terminal wire and the coil lead; the device further comprises a sleeve set. The sleeve group comprises a first sleeve and a second sleeve; the first sleeve is respectively sleeved on the peripheries of the coil lead and the terminal wire; the second sleeve is arranged on the periphery of the first sleeve close to the welding part in a sleeving manner; the terminal wires are welded in advance, so that a customer does not need to carry out a wiring process in a subsequent product assembly process, the stability of integral connection is improved by long welding and adopting a multi-layer sleeve mode, and the insulating tape is covered, so that compared with a traditional spot welding or twisting mode, a larger connection surface area and firm electrical connection are provided.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging coils, in particular to a receiving end coil quick-connect module. Background Art

[0002] The wireless charging receiving coil is one of the key components in the wireless charging system, which is used to receive the power transmitted from the charging source (usually a charging pad or charger). It is generally composed of a conductor coil, an insulating material, and an outer packaging. With the development of the wireless charging field and the formulation of wireless charging standards, the wireless charging receiving coil is currently assembled with finished products. After the customer selects the corresponding specifications, the subsequent product assembly process requires wiring procedures, which leads to relatively low assembly efficiency. Customers require wireless coil manufacturers to customize modules with terminals, but the combination of the coil and the terminal of this module is only spot welding connection. If it needs to be assembled to products with vibration, movement, flight, etc., it will affect the connection stability. In addition, the existing QI specification RX-1A# module has low receiving power (only 5-15W) and short charging distance (only 10mm), which cannot meet customer needs. Therefore, improvement is needed. Utility Model Content

[0003] Based on this, the utility model provides a receiving end coil quick connection module to solve the above problems.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A receiving end coil quick-connect module comprises: a magnetic sheet; at least one layer of coil body is provided on one end surface of the magnetic sheet, and coil leads are led out of the magnetic sheet at both ends of the coil body; terminal wires are connected to the ends of the coil leads away from the coil body; a welding portion is welded between the terminal wire and the coil lead; and a sleeve group is also included; the sleeve group comprises a first sleeve and a second sleeve; the first sleeve is respectively sleeved on the outer periphery of the coil lead and the terminal wire; the second sleeve is sleeved on the outer periphery of the first sleeve adjacent to the welding portion.

[0006] Furthermore, the coil body is connected to the magnetic sheet by glue.

[0007] Furthermore, a gasket is provided between the coil body and the magnetic sheet.

[0008] Furthermore, a binding belt is provided on the outer periphery of the coil body.

[0009] Furthermore, a bending angle is formed between the coil lead and the coil body; and the binding belt abuts against the bending angle.

[0010] Furthermore, the sleeve group also includes a third sleeve; the third sleeve is sleeved on the outer circumference of the first sleeve and the second sleeve.

[0011] Furthermore, the sleeves in the sleeve group are heat shrinkable tubes.

[0012] Furthermore, the length of the welding portion is greater than 10 mm.

[0013] Furthermore, an insulating tape is attached to the outer periphery of the welding portion.

[0014] The beneficial effects of the utility model are:

[0015] 1. High assembly efficiency. The utility model pre-welds the terminal wires, so customers do not need to perform wiring procedures in the subsequent product assembly process, that is, the connection between the coil lead and the terminal wire has been completed in the manufacturing stage. This allows the module to be integrated into the final product more quickly, reducing the time and process in the assembly process and improving overall production efficiency. The pre-connected terminal wires not only simplify the manufacturing process, but also reduce the chance of possible connection errors, helping to ensure the stability and consistency of subsequent production lines.

[0016] 2. Stable connection. This module increases the stability of the overall connection by combining long welding and multi-layer casing. The length of the welding part is greater than 10mm and covered with insulating tape. Compared with traditional spot welding or twisting methods, it provides a larger connection surface area and a firm electrical connection. It helps to reduce connection resistance, improve the efficiency of energy transmission, and is more resistant to environmental conditions such as vibration and movement that the product may suffer during use. In addition, the multi-layer casing design using heat shrink tubing not only protects the coil leads and terminal wires separately, but also increases the overall insulation through the coverage of the outer casing, preventing possible electrical failures and further increasing the stability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the coil lead wire and the terminal wire of the utility model;

[0020] Figure 4 for Figure 3 A is an enlarged schematic diagram of the local structure.

[0021] 10. Magnetic sheet; 11. Gasket; 12. UV curing glue; 20. Coil body; 21. Coil lead; 22. Binding tape; 23. Bending corners; 30. Terminal wire; 40. Welding part; 41. Insulating tape; 50. First sleeve; 51. Second sleeve; 52. Third sleeve. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] like Figure 1-Figure 4 As shown, a receiving end coil quick-connect module includes: a magnetic sheet 10, a coil body 20, a terminal wire 30, and a sleeve group;

[0026] The magnetic sheet 10 constitutes the base of the module;

[0027] The coil body 20 is provided with two layers and is arranged around one end surface of the magnetic sheet 10; in the present embodiment, a gasket 11 is provided between the coil body 20 and the magnetic sheet 10, and the coil body 20 is connected to the magnetic sheet 10 by glue, and the glue includes structural glue and UV curing glue 12; specifically, the gasket 11 is distributed between the coil body 20 and the magnetic sheet 10 by dividing the circumference into three equal parts based on the center of the magnetic sheet 10, and the structural glue is used to fill the remaining gaps in contact with the gasket 11, and finally the UV curing glue 12 is used to fix the center of the circle in four equal parts; the coil body 20 can effectively improve the vibration resistance and mobility resistance of the module by adopting the combination of structural glue and UV curing glue 12 through the above connection method, which is particularly important for those products that need to be used in environments with vibration, movement, etc., such as mobile devices, robotic arms, vehicles, and charging devices in drones;

[0028] The magnetic sheet 10 of the existing QI standard RX-1A# module adopts a square 48*32*0.3mm soft magnetic sheet 10, the coil adopts a 0.30G*2P wire, the wire itself withstands a current of about 1A, the receiving power is 5-15W, and the maximum receiving distance is 10mm. In this embodiment, the magnetic sheet 10 adopts a specification of 85.5*2.0mm, the module thickness is 8.3mm, the coil body 20 adopts a Litz0.10*250 strand profile, the wire has a completed outer diameter of about 2.2mm, the wire itself withstands a current of 16A, the receiving power after the formation can reach more than 50W, and the maximum receiving distance reaches 20mm;

[0029] Coil leads 21 are led out of the magnetic sheet 10 from both ends of the coil body 20; in this embodiment, a bending angle 23 is formed between the coil lead 21 and the coil body 20; the binding belt 22 abuts against the bending angle 23; by providing the binding belt 22, on the one hand, the adhesion of the winding of the coil body 20 can be improved, and on the other hand, the binding belt 22 can abut against the rebound direction of the bending angle 23, provide support and prevent bending rebound;

[0030] The ends of the coil lead wires 21 away from the coil body 20 are connected with terminal wires 30; a welding portion 40 is welded between the terminal wires 30 and the coil lead wires 21; in the present embodiment, the length of the welding portion 40 is greater than 10 mm, and an insulating tape 41 is attached to the outer periphery of the welding portion 40; specifically, the terminal wire 30 is a 16AWG silicone wire, one end of which is peeled 15 mm and dipped in tin, and the extended end of the coil lead wire 21 is peeled 15 mm and dipped in tin, and finally the dipped tin parts at both ends are pressure welded to form a welding portion 40 with a length of 10 mm; by pre-connecting the terminal wires 30, it is convenient to carry out a quick assembly process later, and the assembly efficiency of subsequent products is improved; and this welding method greatly improves the connection stability compared with the existing spot welding and twisting methods;

[0031] The sleeve group is a heat shrinkable tube, which includes a first sleeve 50, a second sleeve 51 and a third sleeve 52; the first sleeve 50 is respectively sleeved on the outer periphery of the coil lead 21 and the terminal wire 30; the second sleeve 51 is sleeved on the outer periphery of the first sleeve 50 adjacent to the welding portion 40; the third sleeve 52 is sleeved on the outer periphery of the first sleeve 50 and the second sleeve 51; by providing multiple layers of sleeves, the first sleeve 50 can separately protect the coil lead 21 and the terminal wire 30, and the second sleeve 51 and the third sleeve 52 extend outward in turn to cover the outer periphery of the welding position, thereby increasing the overall insulation and further increasing the connection stability between the coil lead 21 and the terminal wire 30.

[0032] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A receiving end coil quick-connect module, characterized in that: include: A magnetic sheet; at least one layer of coil body is provided on one end surface of the magnetic sheet, and coil leads are led out of the magnetic sheet at both ends of the coil body; a terminal wire is connected to one end of the coil lead away from the coil body; a welding portion is welded between the terminal wire and the coil lead; a sleeve group is also included; the sleeve group includes a first sleeve and a second sleeve; the first sleeve is respectively sleeved on the outer periphery of the coil lead and the terminal wire; the second sleeve is sleeved on the outer periphery of the first sleeve adjacent to the welding portion.

2. A receiving end coil quick-connect module according to claim 1, characterized in that: The coil body is connected to the magnetic sheet by glue.

3. A receiving end coil quick-connect module according to claim 1 or 2, characterized in that: A gasket is provided between the coil body and the magnetic sheet.

4. A receiving end coil quick-connect module according to claim 1, characterized in that: The outer periphery of the coil body is sleeved with a binding belt.

5. A receiving end coil quick-connect module according to claim 4, characterized in that: A bending angle is formed between the coil lead and the coil body; the binding belt abuts against the bending angle.

6. A receiving end coil quick-connect module according to claim 1, characterized in that: The sleeve group also includes a third sleeve; the third sleeve is sleeved on the outer circumference of the first sleeve and the second sleeve.

7. A receiving end coil quick-connect module according to claim 1 or 6, characterized in that: The sleeves in the sleeve group are heat shrinkable tubes.

8. The receiving end coil quick-connect module according to claim 1, characterized in that: The length of the welding portion is greater than 10 mm.

9. A receiving end coil quick-connect module according to claim 1, characterized in that: An insulating tape is attached to the outer periphery of the welding portion.

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