A charging base

Abstract

This invention discloses a charging stand, comprising: a housing; a PCB board fixed within the housing, the PCB board having solder holes; and charging electrodes disposed within the housing, each charging electrode comprising an electrode body and a soldering segment arranged sequentially. The electrode body is located on a first side of the PCB board, and the soldering segment is located at one end of the electrode body. The soldering segment is inserted into the soldering holes and soldered to the PCB board. The soldering segment has a limiting structure that engages with a second side of the PCB board to limit the electrode from detaching from the soldering holes. Thus, this invention solves the problem of difficult soldering in existing charging stands.

Description

Technical Field

[0001] This invention relates to the field of charging technology, and in particular to a charging stand. Background Technology

[0002] A charging dock is short for battery charger; it's a device for placing a battery on for charging. It typically consists of a casing, power conversion section, charging detection section, and charging protection section. The charging dock also includes a PCB board and charging contacts. Currently, the charging contacts and PCB board are generally connected using straight solder joints. When assembling the charging dock, the charging contacts need to be assembled onto the PCB board before being soldered together. However, charging contacts with straight solder joints are prone to falling off the PCB board and cannot be fixed in place, leading to soldering difficulties. In other words, existing charging dock technology suffers from soldering difficulties. Summary of the Invention

[0003] This invention proposes a charging stand that aims to solve the problem of difficult welding of charging stands in the prior art.

[0004] To address the aforementioned problems, this invention proposes a charging base comprising a housing, a PCB board, and charging electrodes. The PCB board is fixed within the housing and has soldering holes. The charging electrodes are disposed within the housing and include an electrode body and a soldering segment arranged sequentially. The electrode body is located on a first side of the PCB board, and the soldering segment is located at one end of the electrode body. The soldering segment is inserted into the soldering holes and soldered to the PCB board. The soldering segment has a limiting structure that engages with a second side of the PCB board to prevent the charging electrodes from detaching from the soldering holes.

[0005] In one embodiment, the welding segment is provided in the form of a plate, and the limiting structure is an arc portion that convexes radially outward relative to the welding hole.

[0006] In one embodiment, the charging electrode includes two spaced-apart welding segments, and the PCB board has two welding holes that correspond one-to-one with each of the welding segments.

[0007] In one embodiment, the arcuate portions of the two welded segments protrude toward opposite sides.

[0008] In one embodiment, the arcuate portion of the welded section protrudes by a distance of not less than 0.2 mm and not more than 0.8 mm.

[0009] In one embodiment, the widths of the two welded segments are different, the diameters of the two welded holes are different, and the width of each welded segment corresponds to and is adapted to the diameter of each welded hole.

[0010] In one embodiment, the welding segment is plate-shaped, and the limiting structure is a bend disposed at the end of the welding segment.

[0011] In one embodiment, the PCB has pads on both sides along the outer periphery of the welding hole, and each pad is soldered to the welding segment by solder.

[0012] In one embodiment, the housing is provided with a charging hole, and the electrode body includes a charging section and a connecting section. One end of the charging section protrudes from the housing through the charging hole. A first end of the connecting section is connected to the other end of the charging section. A welding section is connected to a second end of the connecting section, and the second end of the connecting section abuts against a first side of the PCB board.

[0013] In one embodiment, the housing includes an upper housing and a lower housing, the upper housing and the lower housing are detachably connected, the charging port is disposed on the upper housing, and the PCB board is fixed to the lower housing.

[0014] This invention proposes a charging stand, specifically, the charging stand includes a charging electrode, a soldered section of the charging electrode, and a limiting structure. The limiting structure is used to cooperate with a second side of the PCB board to limit the charging electrode from coming out of the soldering hole. This solves the problem of soldering difficulties in existing charging stands. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the charging dock portion of an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of one embodiment of the charging electrode of the present invention;

[0017] Figure 3 This is a top view of the PCB board of this invention;

[0018] Figure 4 This is a schematic diagram of a structure of a charging electrode sheet in the prior art;

[0019] Figure 5 This is a schematic diagram of another embodiment of a charging electrode in the prior art.

[0020] label name label name 10 Charging electrode 11 Charging section 12 Connecting segment 13 Welding section 14 Charging contact points 15 PCB contact points 20 PCB board 21a First welding hole 21b Second welding hole Detailed Implementation

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0022] A charging dock is short for battery charger. It's a device where a battery is placed to charge. It typically consists of a casing, power conversion section, charging detection section, and charging protection section. Charging docks are generally more stable than universal chargers, so using a charging dock has less impact on the battery. Charging docks are widely used, such as for walkie-talkies, POS machines, law enforcement recorders, and medical devices. The PCB board and charging contacts are components inside the charging dock. A PCB (Printed Circuit Board) is an important electronic component, serving as the support for electronic components and the carrier for their electrical connections. Because it is manufactured using electronic printing technology, it is called a "printed" circuit board. Charging contacts refer to the charging contacts on the charger, categorized as positive, negative, and test terminals, and are also commonly called charging springs or charging segments.

[0023] Please see Figure 4 , Figure 5 In existing charging sockets, the charging electrode 10 and the PCB board 20 are made connected by the pressure of the upper housing, which brings the charging contact point 14 of the charging electrode 10 into contact with the PCB board 20. This pressure causes the electrode to be deformed under prolonged pressure. This can lead to metal fatigue, and when the external force reaches the metal's yield strength limit, the electrode may fail to spring back, resulting in poor contact and battery damage. Furthermore, the charging electrode 10 is made connected to the PCB board 20 through the arc-shaped tangent of the electrode contact, i.e., the PCB contact point 15. Since there is only one contact point, the contact resistance between the electrode and the PCB board 20 increases, causing heat generation at the contact point, energy loss, and potentially incomplete battery charging. In another technical solution, the charging electrode 10 and the PCB board 20 are connected by welding. Specifically, the charging electrode 10 has a welding section 13, which extends into a welding hole on the PCB board 20 for welding. During the welding process of the charging socket, it is often necessary to insert all welding sections 13 of the charging electrode 10 into the welding hole before welding. However, current welding sections 13 generally have straight welding leads. This makes it easy for the welding section 13 to detach from the welding hole after it has been inserted, before welding, or during welding, thus causing difficulties in welding the charging socket in the prior art.

[0024] Please see Figure 1 , Figure 2To address the aforementioned problems, this invention proposes a charging base comprising a housing, a PCB board 20, and charging electrodes 10. The PCB board 20 is fixed within the housing and has welding holes. The charging electrodes 10 are disposed within the housing and include an electrode body and a welding segment 13 arranged sequentially. The electrode body is located on a first side of the PCB board 20, and the welding segment 13 is located at one end of the electrode body. The welding segment 13 is inserted into the welding holes and welded to the PCB board 20. The welding segment 13 has a limiting structure that engages with a second side of the PCB board 20 to prevent the electrodes from detaching from the welding holes.

[0025] Compared to the original structural design, this invention employs a limiting structure on the solder feet of the charging electrode 10. During the assembly of the charging electrode 10 onto the PCB board 20, the limiting structure secures the charging electrode 10 to the PCB board 20. This is because there is often a transfer process between assembling the charging electrode 10 onto the PCB board 20 and soldering the charging electrode 10 onto the PCB board 20. The limiting structure ensures that the charging electrode 10 is not easily detached from the PCB board 20 during this process. Furthermore, the limiting structure facilitates improved soldering operations for the charging electrode 10, effectively avoiding uneven electrode heights caused by soldering positioning errors, resulting in a more aesthetically pleasing and practical finished product.

[0026] In one embodiment, the welding segment 13 is provided in a plate-like structure, and the limiting structure is a radially outward convex arc portion relative to the welding hole.

[0027] Specifically, the limiting structure can be configured in various forms. Among them, setting the limiting structure as an arc section has advantages such as ease of processing, reduced costs, easy dimensional control, and ease of standardization.

[0028] Please see Figure 3 In one embodiment, the charging electrode 10 includes two spaced-apart welding segments 13, and the PCB board 20 has two welding holes corresponding to each welding segment 13. Specifically, the two welding segments 13 extend into the welding holes respectively, and after the welding segments 13 contact the inner wall of the welding holes, they are soldered together. This achieves the effect of conductivity between the PCB board 20 and the charging electrode 10, realizing the charging function.

[0029] In one embodiment, each charging electrode 10 is provided with two welding sections 13. For each charging base, to realize the charging function, it includes multiple charging electrodes 10, and each charging electrode 10 is provided with two welding sections 13. Further, the charging base includes pairs of charging electrodes 10. For the two pairs of charging electrodes 10, their sizes and dimensions are identical, and one electrode is rotated 180° relative to the other electrode.

[0030] In one embodiment, the arcuate portions of the two welded segments 13 protrude toward opposite sides.

[0031] In one embodiment, the protruding distance of the arc portion of the welding segment 13 is not less than 0.2 mm and not more than 0.8 mm. The protruding distance of the arc portion of the welding segment 13 is the interference fit on one side of the welding hole supporting the PCB board 20. In one embodiment, this value range can be from 0.3 mm to 0.6 mm. In a preferred embodiment, the protruding distance of the arc portion of the welding segment 13 is 0.45 mm. After multiple simulations and experiments, within this value range, the welding segment 13 is less likely to detach from the welding hole. Simultaneously, during assembly, the welding segment 13 can be easily inserted into the welding hole.

[0032] In one embodiment, the two welding segments 13 have different widths, and the two welding holes have different diameters, with each welding segment 13's width corresponding to and matching the diameter of each welding hole. Specifically, each welding segment 13 includes a first welding segment 13 and a second welding segment 13, and each welding hole includes a corresponding first welding hole 21a and a second welding hole 21b. In one embodiment, for the same charging electrode 10, one welding segment 13 has a width of 3mm, and the other welding segment 13 has a width of 4mm.

[0033] In one embodiment, the welding segment 13 is plate-shaped, and the limiting structure is a bend located at the end of the welding segment 13. In another embodiment, the welding segment 13 of the charging electrode 10 may not be pre-processed; instead, during the welding process, after the welding segment 13 extends into the welding hole, the portion extending into the welding hole is bent to achieve limiting. This prevents the charging electrode 10 from easily detaching from the welding hole.

[0034] In one embodiment, pads are provided on both sides of the PCB along the outer periphery of the soldering holes, and each pad is soldered to the soldering segment 13 by solder. In one embodiment, the pads undergo special processing to facilitate soldering. Specifically, copper plating with tin plating is provided at the pads. This arrangement provides better soldering results. Compared to the original PCB 20 pad structure, this invention provides pad structures on both the front and back sides of the PCB 20. With this arrangement, the charging electrode 10 is connected to the PCB 20 pads by encapsulating solder. That is, the contact area between the PCB 20 and the charging electrode 10 is increased, which can significantly reduce the contact resistance between the charging electrode 10 and the PCB 20, and reduce power loss. This arrangement effectively solves the problems of power loss and incomplete charging that often occur with charging sockets.

[0035] In one embodiment, the housing is provided with a charging hole, and the electrode body includes a charging section 11 and a connecting section 12. One end of the charging section 11 protrudes from the housing through the charging hole. A first end of the connecting section 12 is connected to the other end of the charging section, and a welding section 13 is connected to the second end of the connecting section 12. The second end of the connecting section 12 abuts against a first side of the PCB board 20. It is worth noting that the connecting section 12 serves to fix the charging electrode 10. Therefore, the width of the connecting section 12 is greater than the width of the welding section 13, and the width of the connecting section 12 is also greater than the width of the charging section 11. In one embodiment, the two welding sections 13 are respectively disposed on both sides of the second end of the connecting section 12.

[0036] In one embodiment, the housing includes an upper housing and a lower housing, which are detachably connected. The charging port is located on the upper housing, and the PCB board 20 is fixed to the lower housing. Furthermore, the PCB board 20 has screw holes at its four corners, allowing it to be detachably fixed to the lower housing with screws. The detachable connection between the upper and lower housings facilitates the maintenance and replacement of the internal components of the charging base.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A charging stand, characterized in that, include: case; A PCB board is fixed inside the housing, and the PCB board is provided with soldering holes; A charging electrode is disposed within the housing. The charging electrode includes an electrode body and a welding section arranged sequentially. The electrode body is located on the first side of the PCB board, and the welding section is disposed at one end of the electrode body. The welding section is inserted into the welding hole and welded to the PCB board. The welding section has a limiting structure, which is used to cooperate with the second side of the PCB board to limit the charging electrode from coming out of the welding hole. The welding section is plate-shaped, and the limiting structure is a radially outward convex arc portion relative to the welding hole; The charging electrode includes two welding segments spaced apart, and the PCB board has two welding holes that correspond one-to-one with each of the welding segments; The arcuate portions of the two welded sections protrude toward opposite sides; The distance of the protruding arc portion of the welded section is not less than 0.2 mm and not more than 0.8 mm; The two welded segments have different widths, and the two welded holes have different diameters. The width of each welded segment corresponds to and is matched with the diameter of each welded hole.

2. The charging dock as described in claim 1, characterized in that, The welding segment is plate-shaped, and the limiting structure is a bend located at the end of the welding segment.

3. The charging dock as described in any one of claims 1 to 2, characterized in that, The PCB has pads on both sides along the outer periphery of the welding holes, and each pad is soldered to the welding segment by solder.

4. The charging stand according to claim 1, characterized in that, The housing is provided with a charging hole, and the electrode body includes a charging section and a connecting section. One end of the charging section protrudes from the housing through the charging hole. The first end of the connecting section is connected to the other end of the charging section. The welding section is connected to the second end of the connecting section, and the second end of the connecting section abuts against the first side of the PCB board.

5. The charging stand as described in claim 4, characterized in that, The housing includes an upper housing and a lower housing, which are detachably connected. The charging port is located on the upper housing, and the PCB board is fixed to the lower housing.

Images