High-efficiency automatic assembly USB charging battery

Abstract

The utility model discloses a kind of high-efficiency automated assembled USB charging battery, including electric core, control circuit board, control circuit board is equipped with battery positive cap and USB charging female seat, USB charging female seat is Type-C charging female seat.Control circuit board bottom surface position of Type-C charging female seat rear is equipped with anode contact pad, control circuit board top surface edge is equipped with cathode contact pad.Control circuit board bottom is equipped with plastic seat body support, plastic seat body support is equipped with the bayonet for jointing Type-C charging female seat, plastic seat body support bottom rear of bayonet is equipped with square mouth, square mouth is equipped with conductive spring leaf, the upper end of conductive spring leaf and anode contact pad abut, the lower end of conductive spring leaf and the anode contact connection of electric core upper end.Control circuit board, plastic seat body support, electric core outer sleeve are equipped in a five gold steel shell, the upper end edge of five gold steel shell is folded and is pressed tightly the cathode contact pad of control circuit board, realize the conduction electric core cathode to control circuit board.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and more particularly to a highly efficient, automated assembly structure for a USB rechargeable battery. Background Technology

[0002] Batteries, as individual energy storage units, are widely used in various electronic products, such as electric toys, remote controls, portable lights, digital cameras, and electronic clocks. Carbon-zinc and alkaline batteries, which are not rechargeable and can be reused repeatedly, are gradually being phased out by consumers. Rechargeable batteries, including nickel-manganese, nickel-chromium, nickel-metal hydride, and lithium batteries, are gaining popularity due to their high energy density, fast charging, and environmental friendliness. Currently, various USB rechargeable batteries are available on the market, but many have relatively complex structures and require complicated manufacturing processes. For example, CN218513519U describes a cylindrical polymer battery with a USB charging port. This battery has over a dozen structural components. Its protection board and USB charging socket are vertically mounted on top of the battery cell assembly and secured by two plastic shells on either side, requiring manual assembly. Another publication, CN208849025U, discloses a rechargeable battery with a built-in cylindrical steel shell cell and a Micro USB port. This battery structure significantly reduces the number of components. Its control board, positive terminal cap, and USB charging dock are integrated into a control circuit and interface assembly. A plastic bracket is located below the control circuit and interface assembly, and the inner wall of the plastic bracket has latches that engage with the latching hole on the positive terminal cap at the top of the cell. This solution requires precise positioning to achieve the engagement, and manual assembly incurs high labor costs. Automated assembly would require significant R&D and design costs for the assembly equipment. Therefore, this solution aims to propose a USB rechargeable battery structure that enables highly efficient automated assembly. Utility Model Content

[0003] In view of this, this disclosure proposes a highly efficient automated assembly USB rechargeable battery structure. The USB rechargeable battery structure components are assembled by plugging in, which is conducive to achieving efficient automated assembly production and improving production efficiency.

[0004] The technical solution of this utility model is a highly efficient automated assembly USB rechargeable battery, including a battery cell and a control circuit board. The control circuit board has a positive terminal cap and a USB charging female connector, and the control circuit board connects the positive and negative terminals of the battery cell. The positive terminal cap is located at the center of the top surface of the control circuit board, and the USB charging female connector (Type-C) is located on the bottom surface of the control circuit board. The Type-C charging female connector is offset to one side of the bottom surface of the control circuit board, and the connector is horizontally facing outward. A positive contact pad is located on the bottom surface of the control circuit board behind the Type-C charging female connector, and a negative contact pad is located at the edge of the top surface of the control circuit board. A plastic base bracket is located at the bottom of the control circuit board and the Type-C charging female connector. The plastic base bracket has a slot for engaging the Type-C charging female connector, and the plastic base bracket is located behind the slot. The bottom of the frame has a square opening, at which a conductive spring is installed. The conductive spring is elastically engaged with the square opening, and its upper end abuts against the positive electrode contact pad. The lower end of the conductive spring is used to contact the positive electrode at the top of the battery cell. The battery cell is covered with a metal steel shell with a sealed bottom and an open top. After assembling the plastic base bracket and the conductive spring, the control circuit board is inserted into the upper port of the metal steel shell. The side wall of the metal steel shell has a plug-in through hole that exposes the Type-C charging socket. The upper edge of the metal steel shell is flanged and pressed against the negative electrode contact pad of the control circuit board, thereby realizing the assembly and fixation of the battery cell, control circuit board, plastic base bracket and conductive spring, and conducting the negative electrode of the battery cell.

[0005] Furthermore, the snap-fit ​​of the plastic base bracket includes a first notch on the side wall of the plastic base bracket. On both sides of the first notch, there are arc-shaped snap-fit ​​slots arranged in opposite directions to tightly snap the left and right sides of the Type-C charging female socket. The Type-C charging female socket is placed above the arc-shaped snap-fit ​​slots and pressed vertically downward. After the Type-C charging female socket opens the arc-shaped snap-fit ​​slots, it enters the arc-shaped snap-fit ​​slots.

[0006] Furthermore, the conductive spring is made of a flat conductive metal strip, which includes a horizontal strip body, an upwardly bent portion at the end of the horizontal strip body, a horizontally bent portion at the end of the upwardly bent portion, and a downwardly bent portion at the end of the horizontally bent portion. The width of the horizontally bent portion is smaller than the width of the square opening. The outer sides of the upwardly bent portion and the downwardly bent portion elastically abut against the inner wall of the square opening, respectively. The top surface of the horizontally bent portion abuts against the positive electrode contact pad, and the bottom of the horizontal strip body is in contact with the positive electrode at the upper end of the battery cell.

[0007] Furthermore, the upper port edge of the metal steel shell corresponding to the insertion through hole is punched with a second notch. The width of the second notch is the same as the width of the insertion through hole, and the height of the second notch is the flange height of the upper port of the metal steel shell.

[0008] Furthermore, the rear end of the arc-shaped slot is provided with a pressing limit socket for pressing the Type-C charging female connector into the arc-shaped slot. The rear ends of the Type-C charging female connector are respectively provided with limiting blocks on both sides. The limiting blocks are the two sides punched and turned outward on the rear end of the metal outer wall of the Type-C charging female connector.

[0009] Furthermore, the bottom of the plastic base bracket corresponding to the arc-shaped slot is provided with a groove for embedding the bottom of the Type-C charging female socket.

[0010] Furthermore, the plastic base bracket is integrally injection molded from translucent silicone, PU polyurethane, or TPE thermoplastic elastomer.

[0011] The beneficial effects of this utility model are as follows: The rechargeable battery with a USB charging interface designed in this scheme includes a battery cell, a control circuit board, a plastic base bracket, conductive springs, and a metal steel shell. The structure is simple and modular. The control circuit board integrates the battery positive cap, a Type-C charging female connector, positive contact pads, and negative contact pads. The assembly of the control circuit board and the plastic base bracket involves pressing the Type-C charging female connector into the arc-shaped slot on the plastic base bracket, allowing the Type-C charging female connector to quickly enter the arc-shaped slot. Then, the conductive springs are inserted into the square opening of the plastic base bracket. This design can use a vibratory feeder to load the plastic base bracket, and then automatically grip and press the control circuit board to assemble it into a unit component. The vibratory feeder then feeds this unit component with its bottom facing upwards. A robotic arm and suction cups pick up the conductive springs for assembly, or manual assistance can be used to insert the conductive springs. After completing the control circuit board, plastic base bracket, and conductive spring, the battery cell is first inserted into the metal casing. Then, the completed control circuit board, plastic base bracket, and conductive spring are inserted into the metal casing above the battery cell. Finally, a flanging machine is used to flanging the upper edge of the metal casing, thus completing the assembly of the entire battery cell. The structural design of the battery components in this solution involves top-to-bottom insertion and final flanging. The automated mechanical assembly process is simple. The first notch in the plastic base bracket and the Type-C charging female connector on one side of the bottom of the control circuit board can form a fixed component orientation on the feeding and discharging channels, enabling precise positioning and insertion during assembly. Attached Figure Description

[0012] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this disclosure together with the specification and serve to explain the principles of this disclosure.

[0013] Figure 1 This is an exploded view of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the plastic base support structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the assembly structure of the control circuit board, plastic base bracket, and conductive spring of this utility model.

[0016] Figure 4 This is a cross-sectional view of the battery structure for USB charging according to this utility model.

[0017] Explanation of reference numerals in the attached figures

[0018] 1. Battery cell; 11. Positive electrode; 12. Negative electrode; 2. Control circuit board; 21. Battery positive electrode cap; 22. Negative electrode contact pad; 23. Type-C charging female connector; 231. Limiting stop; 24. Positive electrode contact pad; 3. Plastic base bracket; 31. First notch; 32. Arc-shaped slot; 321. Press-fit limiting socket; 33. Square opening; 34. Groove; 4. Conductive spring; 41. Horizontal strip; 42. Upward bending section; 43. Horizontal bending section; 44. Downward bending section; 5. Metal steel shell; 51. Insertion through hole; 52. Flanged edge; 53. Second notch. Detailed Implementation

[0019] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this disclosure.

[0020] Please refer to Figures 1 to 4This is a specific embodiment of a highly efficient automated assembly USB rechargeable battery disclosed in this technical solution. The embodiment is a cylindrical battery, which includes a battery cell 1 and a control circuit board 2. The control circuit board 2 is provided with a positive terminal cap 21 and a USB charging female socket. The control circuit board 2 connects the positive terminal 11 and the negative terminal 12 of the battery cell 1. The positive terminal cap 21 of the battery is located at the center of the top surface of the control circuit board 2, and the USB charging female connector, which is a Type-C charging female connector 23, is located on the bottom surface of the control circuit board 2. The Type-C charging female connector 23 is offset to one side of the bottom surface of the control circuit board 2, and the socket of the Type-C charging female connector 23 faces outward horizontally. A positive contact pad 24 is provided on the bottom surface of the control circuit board 2 behind the Type-C charging female connector 23, and a negative contact pad 22 is provided on the edge of the top surface of the control circuit board 2. A plastic base bracket 3 is provided at the bottom of the control circuit board 2 and the Type-C charging female connector 23. The plastic base bracket 3 has a slot for locking the Type-C charging female connector 23, and a... A square opening 33 is provided, and a conductive spring 4 is provided at the square opening 33. The conductive spring 4 is elastically snapped into the square opening 33, and the upper end of the conductive spring 4 abuts against the positive electrode contact pad 24. The lower end of the conductive spring 4 is used to contact and connect with the positive electrode 11 at the upper end of the battery cell 1. The battery cell 1 is covered with a metal steel shell 5 with a sealed bottom and an open top. After the control circuit board 2 is assembled with the plastic base bracket 3 and the conductive spring 4, it is inserted into the upper port of the metal steel shell 5. The side wall of the metal steel shell 5 is provided with a plug-in through hole 51 that exposes the plug of the Type-C charging female socket 23. The upper edge 52 of the metal steel shell 5 is pressed against the negative electrode contact pad 22 of the control circuit board 2, so as to realize the assembly and fixation of the battery cell 1, the control circuit board 2, the plastic base bracket 3 and the conductive spring 4, and to conduct the negative electrode 12 of the battery cell 1.

[0021] Please refer to Figure 1 , Figure 2The plastic base bracket 3 has a latch including a first notch 31 on the side wall of the plastic base bracket 3. On both sides of the first notch 31 are opposing arc-shaped slots 32 for tightly locking the left and right sides of the Type-C charging female connector 23. The Type-C charging female connector 23 is placed above the arc-shaped slots 32 and pressed vertically downwards. After the Type-C charging female connector 23 opens the arc-shaped slots 32, it enters the arc-shaped slots 32. Preferably, the plastic base bracket 3 is integrally injection molded from translucent silicone, PU polyurethane, or TPE thermoplastic elastomer. Since the plastic base bracket 3 uses the aforementioned translucent materials, an LED indicator light for battery charging is typically provided at the bottom of the control circuit board 2. The light from the LED indicator light can be guided through the plastic base bracket 3, and the light from the LED indicator light can be seen at the insertion through-hole 51.

[0022] Please refer to Figure 1 , Figure 3 , Figure 4 The conductive spring 4 is a flat conductive metal strip, which includes a horizontal strip body 41, an upwardly bent portion 42 at the end of the horizontal strip body 41, a horizontally bent portion 43 at the end of the upwardly bent portion 42, and a downwardly bent portion 44 at the end of the horizontally bent portion 43. The width of the horizontally bent portion 43 is smaller than the width of the square opening 33. The outer sides of the upwardly bent portion 42 and the downwardly bent portion 44 elastically abut against the inner wall of the square opening 33. To achieve elastic abutment between the outer sides of the upwardly bent portion 42 and the downwardly bent portion 44 and the inner wall of the square opening 33, the cross-section of the upwardly bent portion 42 and the downwardly bent portion 44 is in the shape of an "eight". The upwardly bent portion 42 and the downwardly bent portion 44 can elastically close and open when inserted into the square opening 33. The top surface of the horizontally bent portion 43 abuts against the positive electrode contact pad 24, and the bottom of the horizontal strip portion 41 is in contact with the positive electrode at the upper end of the battery cell 1.

[0023] As a preferred embodiment, the upper edge of the metal housing 5 corresponding to the insertion through hole 51 is punched with a second notch 53. The width of the second notch 53 is the same as the width of the insertion through hole 51, and the height of the second notch 53 is the height of the flange 52 of the upper end of the metal housing 5. The second notch 53 is provided because the flange 52 of the upper end of the metal housing 5 will press against the upper edge of the control circuit board 2. In order to prevent it from pressing against the corresponding Type-C charging female connector 23, the second notch 53 is provided at the corresponding position.

[0024] In a preferred embodiment, the rear end of the arc-shaped slot 32 is provided with a pressing and limiting insert 321 for pressing the Type-C charging female connector 23 into the arc-shaped slot 32. Limiting stops 231 are respectively provided on both sides of the rear end of the Type-C charging female connector 23. The limiting stops 231 are two side bodies punched and turned outward from the rear end of the metal outer wall of the Type-C charging female connector 23's connector. By setting the pressing and limiting insert 321 and the limiting stops 231, alignment and limiting functions are achieved when the Type-C charging female connector 23 is pressed into the slot of the plastic base bracket 3.

[0025] Furthermore, the bottom of the plastic base bracket 3 corresponding to the arc-shaped slot 32 is provided with a groove 34 for embedding the bottom of the Type-C charging female connector 23. By designing the groove 34, it plays a stabilizing role after the Type-C charging female connector 23 is pressed into place.

[0026] The USB rechargeable battery designed in this scheme can be fed into a plastic base bracket 3 by a vibratory feeder. Then, an automated gripper control circuit board 2 is used to automatically press and assemble the control circuit board 2 and the plastic base bracket 3 into a unit component. The unit component is then fed with its bottom facing upwards by the vibratory feeder. The conductive springs 4 are picked up by a robotic arm and suction cups for assembly, or the conductive springs 4 can be manually inserted. After the control circuit board 2, plastic base bracket 3, and conductive springs 4 are completed, the battery cell 1 is first inserted into the metal shell 5. Then, the completed control circuit board 2, plastic base bracket 3, and conductive springs 4 are inserted into the metal shell 5 above the battery cell 1. Finally, the edge of the upper port of the metal shell 5 is flanged by a flanging machine, thus completing the assembly of the entire battery cell. The structural design of the battery components in this solution is that they are all interlocked from top to bottom and finally flipped by machine 52. The mechanical and automated assembly is simple. The first notch 31 of the plastic base bracket 3 and the Type-C charging female socket 23 on the bottom side of the control circuit board 2 can form a fixed component orientation output on the feeding and discharging channels, which can realize the positioning and interlocking during assembly.

[0027] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A high-efficiency, automatically assembled USB rechargeable battery, comprising a battery cell and a control circuit board, wherein the control circuit board is provided with a positive terminal cap and a USB charging female connector, and the control circuit board connects the positive and negative terminals of the battery cell, characterized in that, The positive terminal cap of the battery is located at the center of the top surface of the control circuit board, and the USB charging female connector (Type-C) is located on the bottom surface of the control circuit board. The Type-C charging female connector is offset to one side of the bottom surface of the control circuit board, and the connector is horizontally facing outward. A positive contact pad is located on the bottom surface of the control circuit board behind the Type-C charging female connector, and a negative contact pad is located at the edge of the top surface of the control circuit board. A plastic base bracket is located at the bottom of the control circuit board and the Type-C charging female connector. The plastic base bracket has a latch for engaging the Type-C charging female connector, and the plastic base bracket is located behind the latch. The bottom of the frame has a square opening, at which a conductive spring is installed. The conductive spring is elastically engaged with the square opening, and its upper end abuts against the positive electrode contact pad. The lower end of the conductive spring is used to contact the positive electrode at the top of the battery cell. The battery cell is covered with a metal steel shell with a sealed bottom and an open top. After assembling the plastic base bracket and the conductive spring, the control circuit board is inserted into the upper port of the metal steel shell. The side wall of the metal steel shell has a plug-in through hole that exposes the Type-C charging socket. The upper edge of the metal steel shell is flanged and pressed against the negative electrode contact pad of the control circuit board, thereby realizing the assembly and fixation of the battery cell, control circuit board, plastic base bracket and conductive spring, and conducting the negative electrode of the battery cell.

2. The high-efficiency automated assembly USB rechargeable battery according to claim 1, characterized in that, The snap-fit ​​of the plastic base bracket includes a first notch on the side wall of the plastic base bracket. On both sides of the first notch are respectively provided arc-shaped slots arranged in opposite directions for tightly snapping the left and right sides of the Type-C charging female socket. The Type-C charging female socket is placed above the arc-shaped slots and pressed vertically downward. After the Type-C charging female socket opens the arc-shaped slots, it enters the arc-shaped slots.

3. The high-efficiency automated assembly USB rechargeable battery according to claim 1, characterized in that, The conductive spring is made of a flat conductive metal strip, which includes a horizontal strip body, an upwardly bent portion at the end of the horizontal strip body, a horizontally bent portion at the end of the upwardly bent portion, and a downwardly bent portion at the end of the horizontally bent portion. The width of the horizontally bent portion is smaller than the width of the square opening. The outer sides of the upwardly bent portion and the downwardly bent portion are elastically abutting against the inner wall of the square opening, respectively. The top surface of the horizontally bent portion abuts against the positive electrode contact pad, and the bottom of the horizontal strip body is in contact with the positive electrode at the upper end of the battery cell.

4. The high-efficiency automated assembly USB rechargeable battery according to claim 1, characterized in that, The upper port edge of the metal steel shell corresponding to the insertion through hole is punched with a second notch. The width of the second notch is the same as the width of the insertion through hole, and the height of the second notch is the flange height of the upper port of the metal steel shell.

5. The high-efficiency automated assembly USB rechargeable battery according to claim 2, characterized in that, The rear end of the arc-shaped slot is provided with a pressing limit socket for pressing the Type-C charging female connector into the arc-shaped slot. The rear ends of the Type-C charging female connector are respectively provided with limiting blocks on both sides. The limiting blocks are the two sides punched and turned outward on the rear end of the metal outer wall of the Type-C charging female connector.

6. The high-efficiency automated assembly USB rechargeable battery according to claim 2, characterized in that, The bottom of the plastic base bracket corresponding to the arc-shaped slot is provided with a groove for embedding the bottom of the Type-C charging female connector.

7. The high-efficiency automated assembly USB rechargeable battery according to claim 1, characterized in that, The plastic base bracket is integrally injection molded from translucent silicone, PU polyurethane, or TPE thermoplastic elastomer.

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