CN217656838U

CN217656838U - Charging device

Info

Publication number: CN217656838U
Application number: CN202221399375.6U
Authority: CN
Inventors: 陈奕坚; 曾观林; 黄建军; 钱靖
Original assignee: Anker Innovations Co Ltd
Current assignee: Anker Innovations Co Ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-10-25
Anticipated expiration: 2032-06-07

Abstract

The utility model relates to a charger, including insulating casing and circuit board. The insulating casing is embedded with a first metal heat conduction layer, and the circuit board is arranged in the insulating casing. The circuit board is provided with a grounding metal piece, and the grounding metal piece is electrically connected with the first metal heat conduction layer. Be equipped with first metal heat-conducting layer in insulating casing, the coefficient of heat conductivity of first metal heat-conducting layer all directions is higher, is favorable to the inside heat of charger to transmit its surface along facing to with the thickness direction fast, improves the radiating efficiency, and the temperature of insulating casing surface all positions is more even simultaneously. Because the circuit board is provided with the grounding metal piece, the grounding metal piece is electrically connected with the first metal heat conduction layer, and if the charger has an electric leakage condition, the current can be led into the ground through the grounding metal piece, so that the use safety of the charger is improved. Simultaneously, first metal heat-conducting layer and ground connection metalwork electric connection, first metal heat-conducting layer can also shield the electromagnetic interference that the circuit board produced like this, is favorable to EMC.

Description

Charging device

Technical Field

The utility model relates to a battery charging outfit technical field especially relates to a charger.

Background

In consideration of the insulation safety problem, the housing of the common charger is made of plastic. In the process of using the charger, the heat inside the charger cannot be transmitted and distributed in time, so that the temperature inside the charger is higher, the power consumption of the magnetic core component is increased along with the rise of the temperature, vicious circle is formed, the charging efficiency of the charger is reduced, and the service life of the charger is prolonged. In addition, the charger has poor safety in the use process.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a charger that can improve heat dissipation efficiency; in addition, the use safety can be improved.

A charger, comprising:

the heat-conducting type heat-conducting module comprises an insulating shell, a heat-conducting layer and a heat-conducting layer, wherein a first metal heat-conducting layer is embedded in the insulating shell, and the insulating shell is provided with an accommodating cavity; and

the circuit board is arranged in the accommodating cavity; the circuit board is provided with a grounding metal piece, and the grounding metal piece is electrically connected with the first metal heat conduction layer.

In one embodiment, a first metal convex hull is arranged at a position, corresponding to the grounding metal piece, of the first metal heat conduction layer, and the grounding metal piece is in close fit with the first metal convex hull.

In one embodiment, the insulating shell comprises a first end plate and a first side enclosing plate arranged along the periphery of the first end plate, and the first side enclosing plate and the first end plate are arranged in an enclosing manner to form the accommodating cavity; first metal heat-conducting layer is metal heat conduction cover, metal heat conduction cover includes the second end plate and follows the second side bounding wall that the second end plate periphery set up, the second side bounding wall inlays to be located in the first side bounding wall, the second end plate inlays to be located in the first end plate.

In one embodiment, a first metal convex hull is arranged on one side of the second side enclosing plate facing the accommodating cavity; the first side enclosing plate is provided with a through hole at a position corresponding to the first metal convex hull, and the first metal convex hull is arranged in the through hole so that the first metal convex hull extends into the accommodating cavity through the through hole.

In one embodiment, the first metal heat conduction layer is integrally formed on the insulation shell through in-mold injection molding.

In one embodiment, the insulating shell is provided with an opening communicated with the accommodating cavity; the charger further comprises a pin base assembly, the pin base assembly is arranged in the opening and connected with the shell, and the pin base assembly is electrically connected with the circuit board.

In one embodiment, the pin base assembly comprises a pin and an insulating base, the insulating base is arranged in the opening and connected with the insulating shell, the pin is inserted into the insulating base, and the pin is electrically connected with the circuit board; and a second metal heat conduction layer is embedded in the insulating seat.

In one embodiment, the second metal heat conduction layer is electrically connected with the grounding metal piece; or, the second metal heat conduction layer is electrically connected with the first metal heat conduction layer.

In one embodiment, the second metal heat conduction layer is integrally formed on the insulation seat through in-mold injection molding.

In one embodiment, the insulating shell is provided with a charging interface, and the charging interface is electrically connected with the circuit board.

The charger adopts the insulating shell, and the circuit board is arranged in the insulating shell, so that the phenomena of electric leakage and the like of the charger in the use process can be reduced, and the use safety of the charger is improved. The in-process that the charger used, its inside can produce the heat, consequently in this embodiment, is equipped with first metal heat-conducting layer in insulating casing, and the coefficient of heat conductivity of first metal heat-conducting layer all directions is higher, is favorable to the inside heat of charger to transmit its surface with the thickness direction along facing fast, transmits the air fast through air convection and radiation at last, improves the radiating efficiency, and the temperature of insulating casing surface each position is more even simultaneously, promotes user's experience and feels. In addition, because the circuit board is provided with the grounding metal piece, the grounding metal piece is electrically connected with the first metal heat conduction layer, and if the charger has an electric leakage condition, the current can be led into the ground through the grounding metal piece, so that the use safety of the charger is improved. Simultaneously, first metal heat-conducting layer and ground connection metalwork electric connection, first metal heat-conducting layer can also shield the electromagnetic interference that the circuit board produced like this, is favorable to EMC.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

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

Fig. 1 is a schematic structural diagram of a charger according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the charger shown in FIG. 1 from another perspective;

FIG. 3 is a cross-sectional view of the charger of FIG. 1;

FIG. 4 is an enlarged partial view of FIG. 3 at A;

FIG. 5 is an exploded view of the charger of FIG. 1;

fig. 6 is an exploded view of the insulative housing and the first metallic heat conductive layer of the charger of fig. 1;

fig. 7 is an exploded view of the insulative housing and the first metallic heat conductive layer of the charger of fig. 6 from another perspective.

The reference numbers illustrate: 10. an insulating housing; 11. a first end plate; 12. a first side coaming; 121. perforating; 13. an opening; 14. an accommodating cavity; 15. a charging interface; 20. a first metal heat conducting layer; 21. a second end plate; 22. a second side coaming; 23. a first ground connection; 30. a circuit board; 31. a grounding metal member; 40. a pin base assembly; 41. an insulating base; 42. and (7) a pin.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In consideration of the insulation safety of the charger, the casing of the common charger is made of plastic, and because the thermal conductivity coefficient of the plastic is low and the thermal conductivity is poor, the heat in the charger cannot be timely conducted to the plastic casing, the temperature of the plastic casing is uneven, the temperature of partial positions is high, and the temperature of partial positions is low, so that the temperature in the charger is high, the power consumption of magnetic core components is increased along with the temperature rise, vicious circle is formed, the charging efficiency of the charger is reduced, and the service life of the charger is prolonged.

Referring to fig. 1, 3 and 4, a charger according to an embodiment of the present invention includes an insulating housing 10 and a circuit board 30. The insulating housing 10 is embedded with a first metal heat conduction layer 20, the insulating housing 10 is provided with a containing cavity 14, and the circuit board 30 is arranged in the containing cavity 14. The circuit board 30 is provided with a grounding metal piece 31, and the grounding metal piece 31 is electrically connected with the first metal heat conduction layer 20.

Optionally, the insulating housing 10 is a plastic insulating housing, for example, the plastic insulating housing is made of PC (Polycarbonate) or PC and ABS (Acrylonitrile-butadiene-styrene), but not limited thereto.

Optionally, the first metal heat conduction layer 20 may be a high thermal conductive material such as aluminum, copper, etc., without being limited thereto.

In the charger, the insulating shell 10 is adopted, and the circuit board 30 is arranged in the insulating shell 10, so that the phenomena of electric leakage and the like of the charger in the use process can be reduced, and the use safety of the charger is improved. In the process that the charger used, its inside heat that can produce, therefore in this embodiment, be equipped with first metal heat-conducting layer 20 in insulating casing 10, the coefficient of heat conductivity of the inside each direction of first metal heat-conducting layer 20 is higher, be favorable to the inside heat of charger to transmit its surface along facing with thickness direction fast, through air convection and radiation in transmitting the air fast at last, improve the radiating efficiency, the temperature of insulating casing 10 surface each position is more even simultaneously, promotes user's experience and feels. In addition, because the circuit board 30 is provided with the grounding metal piece 31, the grounding metal piece 31 is electrically connected with the first metal heat conduction layer 20, if the charger has an electric leakage situation, the current can be led to the ground through the grounding metal piece 31, and the use safety of the charger is improved. Meanwhile, the first metal heat conduction layer 20 is electrically connected with the grounding metal part 31, so that the first metal heat conduction layer 20 can also shield Electromagnetic interference generated by the circuit board 30, which is favorable for EMC (Electromagnetic Compatibility).

Specifically, the grounding metal piece 31 is electrically connected to the negative electrode of the large filtering capacitor; alternatively, the grounding metal member 31 is electrically connected to the negative electrode of the charging interface 15.

In one embodiment, referring to fig. 3, a first metal heat conducting layer 20 is embedded within an insulating housing 10. Alternatively, the first metal heat conduction layer 20 is integrally formed on the insulation housing 10 by in-mold injection molding. So, adopt the mode of moulding plastics in the mould to embed first metal heat-conducting layer 20 in insulating casing 10, insulating casing 10 is strong with first metal heat-conducting layer 20's commonality like this, and the inclusion is high, can be inseparabler with what first metal heat-conducting layer 20 was hidden simultaneously, and overall structure rigidity is strong, and impact resistance is high. Of course, in other embodiments, a receiving groove adapted to the first metal heat conduction layer 20 may be provided in the insulation housing 10, and the first metal heat conduction layer 20 is provided in the receiving groove.

In one embodiment, referring to fig. 3 and 4, the first metal heat conduction layer 20 is provided with a first ground connection portion 23 at a position corresponding to the ground metal member 31, and the ground metal member 31 is closely fitted with the first ground connection portion 23. After the circuit board 30 is pushed and mounted in place, the grounding metal piece 31 and the first grounding connection portion 23 are attached tightly, so that the grounding reliability of the first metal heat conduction layer 20 is ensured, and the use safety of the charger is ensured.

Alternatively, referring to fig. 3 and 4, the first ground connection 23 comprises a metal convex hull stamped and formed directly through the first metal heat conductive layer 20. Alternatively, the first ground connection 23 comprises a metal sheet or block which is soldered to the first metal heat conducting layer 20.

In one embodiment, referring to fig. 6 and 7, the first metal heat conduction layer 20 is a metal heat conduction cover fitted to the insulating housing 10, and the metal heat conduction cover is embedded in the insulating housing 10. Specifically, the insulating housing 10 includes a first end plate 11 and a first side wall 12 disposed along a periphery of the first end plate 11, and the first side wall 12 and the first end plate 11 enclose a receiving cavity 14 having an opening 13. The first metal heat conduction layer 20 includes a second end plate 21 and a second side enclosing plate 22 arranged along the periphery of the second end plate 21, the second side enclosing plate 22 is embedded in the first side enclosing plate 12, and the second end plate 21 is embedded in the first end plate 11. Wherein the second end plate 21 is adapted to the size of the first end plate 11, and the second side enclosing plate 22 is adapted to the size of the first side enclosing plate 12. In this way, the first metal heat conduction layer 20 envelops the circuit board 30 like a cover, which can reduce the electromagnetic interference generated by the circuit board 30 to effectively shield the electrostatic field and the magnetic field, which is beneficial to EMC.

Further, referring to fig. 7, the second side enclosing plate 22 is provided with a first grounding connecting portion 23 at a side facing the accommodating chamber 14. The first side wall 12 is provided with a through hole 121 adapted to the first grounding connection portion 23 at a position corresponding to the first grounding connection portion 23, and the first grounding connection portion 23 is disposed in the through hole 121, so that the first grounding connection portion 23 extends into the accommodating cavity 14 through the through hole 121, thereby facilitating the close fit between the first grounding connection portion 23 and the grounding metal member 31.

In one embodiment, referring to fig. 2, 3 and 5, the insulating housing 10 is provided with an opening 13 and a receiving cavity 14 communicating with the opening 13. The charger further comprises a pin base assembly 40, the pin base assembly 40 is disposed in the opening 13 and connected with the insulating housing 10, and the pin base assembly 40 is electrically connected with the circuit board 30. Optionally, the pin base assembly 40 is attached to the insulating housing 10 by ultrasonic welding. When the socket is used, the pin base assembly 40 is inserted into the jack of the power socket, so that the power taking function can be realized.

Further, referring to fig. 2, 3 and 5, the pin base assembly 40 includes a pin 42 and an insulating base 41, and the insulating base 41 is disposed in the opening 13 and connected to the insulating housing 10. Optionally, the pins 42 are of a collapsible construction. The pins 42 are inserted into the insulating base 41, and the pins 42 are electrically connected to the circuit board 30. A second metal heat conducting layer is embedded in the insulating base 40. Therefore, the second metal heat conduction layer is arranged in the insulation seat 41, the heat conduction coefficient of each direction of the second metal heat conduction layer is high, the heat inside the charger is favorably and quickly transferred to the outer surface of the charger along the direction facing the charger and the thickness direction, and finally the heat is quickly transferred to the air through air convection and radiation, so that the heat dissipation efficiency is improved, meanwhile, the temperature of each position on the surface of the insulation seat 41 is uniform, and the experience of a user is improved.

Alternatively, the second metal heat conduction layer is integrally formed on the insulation seat 41 by in-mold injection molding. So, the mode of adopting mould internal injection moulding is embedded in insulator 41 with second metal heat-conducting layer, and insulator 41 is strong with the commonality of second metal heat-conducting layer like this, and the inclusion is high, can be inseparabler with the second metal heat-conducting layer is hidden simultaneously, and overall structure rigidity is strong, and is shock-resistant high. Of course, in other embodiments, a receiving groove adapted to the second metal heat conduction layer may be disposed in the insulation seat 41, and the second metal heat conduction layer is disposed in the receiving groove.

Furthermore, the second metal heat conduction layer is electrically connected to the grounding metal member 31. Alternatively, the second metal heat conducting layer is electrically connected to the first metal heat conducting layer 20. In this way, when the charger is in a leakage state, the current can be introduced to the ground through the grounding metal fitting 31, and the use safety of the charger is improved. In addition, the second metal heat conduction layer is electrically connected with the grounding metal piece 31, so that the second metal heat conduction layer can also shield electromagnetic interference generated by the circuit board 30, and EMC is facilitated.

In one embodiment, referring to fig. 2 and 3, the insulating housing 10 is provided with a charging interface 15, and the charging interface 15 is electrically connected to the circuit board 30. Specifically, the interface 15 that charges is located one side that insulating casing 10 deviates from pin base subassembly 40, and the interface 15 that charges is located on first end plate 11 promptly. During the use, insert the power charging wire that corresponds and locate interface 15 that charges, connect the charger through the power charging wire and wait the battery charging outfit, realize the function of charging.

It should be noted that the type and number of the charging interfaces 15 may be set according to actual requirements, and are not limited in detail herein. In this embodiment, the interface 15 that charges is equipped with threely, and two of them charge interface 15 for Type-C interface 15 that charges, another one charge interface 15 for Type-A interface 15 that charges.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A charger, comprising:

the heat-conducting module comprises an insulating shell, a first metal heat-conducting layer and a second metal heat-conducting layer, wherein the insulating shell is embedded with the first metal heat-conducting layer and is provided with an accommodating cavity; and

2. The charger according to claim 1, wherein a first metal convex hull is disposed at a position of the first metal heat conduction layer corresponding to the grounding metal piece, and the grounding metal piece is closely fitted with the first metal convex hull.

3. The charger according to claim 1, wherein the insulating housing includes a first end plate and a first side wall disposed along a periphery of the first end plate, the first side wall and the first end plate defining the receiving cavity;

the first metal heat conduction layer is a metal heat conduction cover, the metal heat conduction cover comprises a second end plate and a second side surrounding plate arranged along the periphery of the second end plate, the second side surrounding plate is embedded in the first side surrounding plate, and the second end plate is embedded in the first end plate.

4. The charger according to claim 3, wherein a first metal convex hull for connecting and matching with the grounding metal piece is arranged on one side of the second side enclosing plate facing the accommodating cavity; the first side enclosing plate is provided with a through hole at a position corresponding to the first metal convex hull, and the first metal convex hull is arranged in the through hole so that the first metal convex hull extends into the accommodating cavity through the through hole.

5. The electrical charger according to claim 1, wherein the first metallic thermally conductive layer is integrally molded to the insulative housing by in-mold molding.

6. The charger according to any one of claims 1 to 5, wherein the insulating housing is provided with an opening communicating with the accommodation chamber;

the charger further comprises a pin base assembly, the pin base assembly is arranged in the opening and connected with the shell, and the pin base assembly is electrically connected with the circuit board.

7. The charger according to claim 6, wherein the pin base assembly comprises a pin and an insulating base, the insulating base is disposed in the opening and connected to the insulating housing, the pin is inserted into the insulating base, and the pin is electrically connected to the circuit board; and a second metal heat conduction layer is embedded in the insulating seat.

8. The electrical charger according to claim 7, wherein the second metal heat conduction layer is electrically connected to the grounding metal piece; or, the second metal heat conduction layer is electrically connected with the first metal heat conduction layer.

9. The electrical charger according to claim 7, wherein the second metal heat conductive layer is integrally molded to the housing by in-mold molding.

10. The charger according to any one of claims 1 to 5, wherein the insulating housing is provided with a charging interface, and the charging interface is electrically connected with the circuit board.