Mobile power supply

Abstract

The utility model relates to a mobile power supply, which comprises a shell with a built-in mounting cavity. The portable power source is ingenious in design and compact and small in structure, and the power source support and the fixing base are arranged on the two opposite sides of the PCB respectively; a pin assembly is rotationally arranged on the side, back to the PCB, of the fixing base. The pin assembly is not in direct contact with the PCB, and the fixed seat has a certain height, so that enough creepage distance between the pin assembly and the battery can be ensured, and the layout is reasonable; furthermore, metal elastic sheets are arranged between the pins and the PCB. Each of the two metal elastic sheets comprises a first elastic contact pin and a second elastic contact pin, the first elastic contact pins and the PCB are matched, inserted and fixed, and the second elastic contact pins and the corresponding insertion pins are matched, elastically abutted and electrically connected; and the metal elastic sheets can be connected and mounted without screws, so that the assembly is simple, and the production cost is further reduced.

Description

Technical Field

[0001] The utility model relates to a mobile power supply. Background Art

[0002] The power bank has become an essential product in people's lives. To ensure safety during the use of the power bank, it is necessary to ensure the minimum distance that can be tolerated under the surface creepage phenomenon between the plug and the battery; the creepage phenomenon refers to the situation where, in the presence of an insulating material between the electrodes, when the voltage is high enough, charges will move along the surface of the insulating material. Therefore, it is necessary to ensure the creepage distance between the plug of the power bank and the charging battery; if the creepage distance between the plug of the power bank and the battery is insufficient, in the case of a relatively large electric field strength, electrical breakdown is likely to occur, resulting in a short circuit between the electrodes and even causing safety accidents such as fires; in the prior art, to meet the safety requirements of the above creepage distance, generally, the charging plug is kept at a certain distance from the PCB board, and then the charging plug and the PCB board are electrically connected through two conductive elastic pieces; in the prior art, usually one end of the conductive elastic piece is fixed to the PCB board by screws or welding to achieve electrical connection, and the other end is electrically connected to the corresponding plug, and the installation is relatively complex.

[0003] For example, the patent number CN201920219545.X discloses a multifunctional power bank rack with a transformable plug; it includes a lower case, a middle case, an upper case, a main board, a battery pack, and a circuit board; a wireless charging coil is provided between the upper case and the middle case; a battery pack, a plug assembly, and a conductive elastic piece connecting the plug assembly and the circuit board are installed between the middle case and the lower case; the plug assembly is located on one side of the battery pack; in the above structure, the internal space of the power bank housing is not reasonably utilized, and the internal occupied space is large, resulting in an overly large volume and inconvenient carrying; moreover, the installation method of the conductive elastic piece is also inconvenient. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a mobile power supply in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: A mobile power supply includes a housing with an internally installed cavity. Among them, a PCB board is fixedly installed in the installation cavity; on opposite sides of the PCB board, a power supply bracket and a fixed seat are respectively provided; on the surface of the power supply bracket facing away from the PCB board, there is an installation groove for placing a battery; on the surface of the fixed seat facing away from the PCB board, there is a pin assembly; the pin assembly includes a rotating shaft rotatably connected to the fixed seat, and two pins respectively fixedly arranged at both ends of the rotating shaft; between the pins and the PCB board, there is also a metal elastic sheet; both of the metal elastic sheets include a first elastic contact foot and a second elastic contact foot. The first elastic contact foot extends towards the PCB board and is fixedly connected to it by plugging and matching, and the second elastic contact foot extends towards the corresponding pin and is elastically pressed and electrically connected to it in cooperation;

[0006] In the mobile power supply of the present utility model, among them, the metal elastic sheet further includes a connection head fixedly connected to the PCB board; both the first elastic contact foot and the second elastic contact foot are located on the same side of the connection head; during the rotation process of the pin assembly, the second elastic contact foot is driven to approach or move away from the PCB board with the connection head as the support point;

[0007] In the mobile power supply of the present utility model, among them, the first elastic contact foot includes a bent portion bent towards the pin direction, a support portion that is plugged and fixedly connected with a card slot on the PCB, and a circuitous connection portion connecting the bent portion and the support portion;

[0008] In the mobile power supply of the present utility model, among them, the second elastic contact foot bends from the outer edge of one side of the connection head towards the pin direction; the bending angle of the second elastic contact foot is greater than the bending angle of the bent portion;

[0009] In the mobile power supply of the present utility model, among them, the PCB board divides the installation cavity into a first cavity and a second cavity; the power supply bracket is located in the first cavity and is fixedly connected to the PCB board; the fixed seat and the pin assembly are located in the second cavity, and the fixed seat is fixedly connected to the housing through a fastener; the fixed seat limits and installs the pin assembly on the housing;

[0010] In the mobile power supply of the present utility model, among them, a display screen bracket is also fixedly installed on one side of the PCB board where the power supply bracket is located; the height of the display screen bracket is not lower than the height of the power supply bracket; a display screen electrically connected to the PCB board is also provided on the display screen bracket;

[0011] The mobile power supply described in the present utility model, wherein the power supply bracket includes a substrate for horizontally placing the battery; first and second partitions are respectively provided at two ends of the substrate; the substrate, the first partition and the second partition enclose a semi-closed installation groove;

[0012] The mobile power supply described in the present utility model, wherein the display screen bracket is located outside the first partition; a plurality of high-voltage components are fixedly installed on the PCB board outside the second partition; the area where the high-voltage components are located forms a high-voltage area; the high-voltage components are isolated from the battery through the second partition;

[0013] The mobile power supply described in the present utility model, wherein the two side walls of the substrate extend upward along the outer surface of the battery; grooves communicating with the installation groove are symmetrically provided at the outer edges of the two side walls near one end of the first partition;

[0014] The mobile power supply described in the present utility model, wherein the housing includes a bottom shell, a face shell detachably connected to the bottom shell, and a transparent protective shell adapted to and fixedly connected to the face shell; a window corresponding to the display screen is provided on the face shell; a plurality of reinforcing ribs are circumferentially provided on the inner surface of the side wall of the bottom shell; the PCB board is clamped and fixed to the bottom shell through the plurality of reinforcing ribs.

[0015] The beneficial effects of the present utility model are as follows: The mobile power supply is ingeniously designed, compact and small in structure. A power supply bracket and a fixing seat are respectively provided on the opposite sides of the PCB board; a plug component is rotatably arranged on the side of the fixing seat facing away from the PCB board; the plug component does not directly contact the PCB board, and due to the certain height of the fixing seat, a sufficient creepage distance can be ensured between the plug component and the battery, and the layout is reasonable; further, metal elastic sheets are provided between the plugs and the PCB board; both metal elastic sheets include a first elastic contact foot and a second elastic contact foot. The first elastic contact foot is fixedly inserted and connected with the PCB board, and the second elastic contact foot elastically presses and electrically connects with the corresponding plug; the metal elastic sheets can be connected and installed without screws, the assembly is simple, and the production cost is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts:

[0017] Figure 1 is an exploded view of the mobile power supply of the preferred embodiment of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of a power bank according to a preferred embodiment of the present utility model;

[0019] Figure 3 is Figure 1 a schematic diagram of the structure of the metal shrapnel in Specific embodiments

[0020] The terms "first", "second", "third", "fourth", etc. in the description and claims of the present invention and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] "Plurality" means two or more. "And / or" describes the associated relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0023] Moreover, the terms indicating directions, such as "upper, lower, front, rear, left, right, upper end, lower end, longitudinal", etc., are all referenced based on the attitude position of the device or equipment described in this solution during normal use.

[0024] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0025] A power bank according to a preferred embodiment of the present utility model, as Figures 1 - 3As shown, it includes a housing 10 with a built-in installation cavity 01. Inside the installation cavity 01, a PCB board 11 is fixedly installed; on the opposite sides of the PCB board 11, a power supply bracket 12 and a fixing base 13 are respectively provided; on the surface of the power supply bracket 12 facing away from the PCB board 11, there is an installation groove 121 for placing the battery 14; in this embodiment, the battery 14 uses batteries of models such as 21700 and 26650 in the prior art; this battery is small in volume and large in energy storage; on the surface of the fixing base 13 facing away from the PCB board 11, there is a pin assembly 15; the pin assembly 15 includes a rotating shaft 151 rotatably connected to the fixing base 13, and two pins 152 respectively fixedly arranged at both ends of the rotating shaft 151; between the pins 152 and the PCB board 11, there is also a metal elastic sheet 16; both metal elastic sheets 16 include a first elastic contact foot 161 and a second elastic contact foot 162. The first elastic contact foot 161 extends towards the PCB board 11 and is fixedly inserted and connected with it, and the second elastic contact foot 162 extends towards the corresponding pin 152 and is elastically pressed and electrically connected with it.

[0026] This mobile power supply is ingeniously designed, compact and small in structure. By respectively providing a power supply bracket and a fixing base on the opposite sides of the PCB board; on the side of the fixing base facing away from the PCB board, a pin assembly is rotatably arranged; the pin assembly does not directly contact the PCB board, and due to the certain height of the fixing base, it can ensure that there is enough creepage distance between the pin assembly and the battery, and the layout is reasonable; further, between the pins and the PCB board, there is a metal elastic sheet; both metal elastic sheets include a first elastic contact foot and a second elastic contact foot. The first elastic contact foot is fixedly inserted and connected with the PCB board, and the second elastic contact foot is elastically pressed and electrically connected with the corresponding pin; the metal elastic sheet can achieve connection and installation without screws, the assembly is simple, and the production cost is further reduced.

[0027] Further, as Figure 3 shown, the metal elastic sheet 16 also includes a connection head 163 fixedly connected to the PCB board 11; both the first elastic contact foot 161 and the second elastic contact foot 162 are located on the same side of the connection head 163; during the rotation of the pin assembly 15, the second elastic contact foot 162 is driven to approach or move away from the PCB board 11 with the connection head 163 as the support point, as Figure 2As shown, at least a part of the end of the pin connected to the rotating shaft extends out of the rear side of the rotating shaft. Specifically, when the pin assembly rotates outwards from the housing, one end of the pin rotates around the rotating shaft 151 and applies a force towards the PCB board to the second elastic contact 162. At this time, the second elastic contact 162 deforms with the connector as the support point and approaches the PCB board. Conversely, when the pin assembly rotates inwards and is received into the housing, one end of the pin rotates in the opposite direction around the rotating shaft 151 and gradually withdraws the force applied to the second elastic contact 162. The second elastic contact 162 slowly moves away from the PCB board with the connector as the support point until the second elastic contact returns to its initial state. At this time, the pin is received into the housing.

[0028] Furthermore, in order to further improve the connection reliability and adaptability between the metal elastic piece and both the PCB board and the pin assembly; the first elastic contact 161 includes a bent portion 1611 that bends towards the pin 152, a support portion 1612 that is inserted and fixed in cooperation with the card slot on the PCB, and a detour connection portion 1613 that connects the bent portion 1611 and the support portion 1612.

[0029] Furthermore, the second elastic contact 162 bends from the outer edge of one side of the connector 163 towards the pin 152; the bending angle of the second elastic contact 162 is greater than the bending angle of the bent portion 1611. It can not only make up for the height difference between the pin assembly and the PCB board, but also ensure the stability of the connection and good contact.

[0030] Optionally, the PCB board 11 divides the installation cavity 01 into a first cavity and a second cavity. In this embodiment, the first cavity is the upper cavity and the second cavity is the lower cavity; the power supply bracket 12 is located in the first cavity and is fixedly connected to the PCB board 11; optionally, the power supply bracket 12 can also be fixedly connected to the housing; the fixed seat 13 and the pin assembly 15 are located in the second cavity, and the fixed seat 13 is fixedly connected to the housing 10 through fasteners; the fasteners can be fastening screws in the prior art. Optionally, the fixed seat 13 can also be installed on the PCB board; the fixed seat 13 limits and installs the pin assembly 15 on the housing 10, with a simple and stable structure.

[0031] As Figure 1 shown, a display screen bracket 17 is also fixedly installed on one side of the PCB board 11 where the power supply bracket 12 is located; the height of the display screen bracket 17 is not lower than the height of the power supply bracket 12; a display screen 18 electrically connected to the PCB board 11 is also provided on the display screen bracket 17.

[0032] Furthermore, the power supply bracket 12 includes a substrate 122 for horizontally placing the battery 14; a first partition 123 and a second partition 124 are respectively provided at both ends of the substrate 122; the substrate 122, the first partition 123 and the second partition 124 enclose a semi-closed installation groove 121, which can not only well protect the battery, but also position the battery, making it convenient to use.

[0033] Furthermore, the display screen bracket 17 is located outside the first partition 123; a plurality of high-voltage components 19 are fixedly installed on the PCB board 11 outside the second partition 124; the area where the high-voltage components 19 are located forms a high-voltage area; the high-voltage components 19 are isolated from the battery 14 by the second partition 124. By isolating the high-voltage components outside the battery through the second partition 15, it can ensure that there is enough creepage distance between the high-voltage components and the battery, making it safe to use.

[0034] Furthermore, the two side walls of the substrate 122 extend upward along the outer surface of the battery 14; grooves 125 communicating with the installation groove 121 are symmetrically provided at the outer edges of the two side walls near one end of the first partition 123, which is convenient for users to install the battery in the installation groove or remove it from the installation groove, making it convenient to use.

[0035] Furthermore, the housing 10 includes a bottom case 101, a face case 102 detachably connected to the bottom case 101, and a transparent protective case 103 adapted to and fixedly connected to the face case 102; a window 104 corresponding to the display screen 18 is provided on the face case 102; a plurality of reinforcing ribs 105 are circumferentially provided on the inner surface of the side wall of the bottom case 101; the surface of the reinforcing rib 105 facing the center of the installation cavity 01 is an inclined surface, and its thickness gradually increases from top to bottom; the PCB board 11 is fixedly clamped to the bottom case 101 through a plurality of reinforcing ribs 105, with simple installation and saving screws, further reducing the cost.

[0036] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A mobile power supply, comprising a housing with an internally installed cavity, characterized in that, A PCB board is fixedly installed in the installation cavity; a power supply bracket and a fixing seat are respectively provided on opposite sides of the PCB board; a mounting groove for placing a battery is provided on the side surface of the power supply bracket facing away from the PCB board; a pin assembly is provided on the side surface of the fixing seat facing away from the PCB board; the pin assembly includes a rotating shaft rotatably connected to the fixing seat, and two pins respectively fixedly provided at both ends of the rotating shaft; a metal spring is also provided between the pin and the PCB board; the two metal springs each include a first elastic contact pin and a second elastic contact pin, the first elastic contact pin extends toward the PCB board and is plugged and fixed with it, and the second elastic contact pin extends toward the corresponding pin and is elastically pressed and electrically connected with it.

2. The mobile power supply according to claim 1, characterized in that The metal dome also includes a connector fixedly connected to the PCB board; the first elastic contact pin and the second elastic contact pin are both located on the same side of the connector; during the rotation of the pin assembly, the second elastic contact pin is driven to move closer to or away from the PCB board with the connector head as a support point.

3. The mobile power supply according to claim 2, characterized in that, The first elastic contact pin includes a bent portion bent toward the plug pin, a supporting portion plugged and fixed with the card slot on the PCB, and a circuitous connecting portion connecting the bent portion and the supporting portion.

4. The mobile power supply according to claim 3, characterized in that, The second elastic contact is bent from an outer edge of one side of the connector toward the plug; the bending angle of the second elastic contact is greater than the bending angle of the bent portion.

5. The mobile power supply according to claim 1, characterized in that, The PCB board divides the installation cavity into a first cavity and a second cavity; the power supply bracket is located in the first cavity and fixedly connected to the PCB board; the fixing seat and the pin assembly are located in the second cavity, and the fixing seat is fixedly connected to the shell via a fastener; the fixing seat limits the pin assembly and installs it on the shell.

6. The mobile power supply according to claim 1, characterized in that A display screen bracket is also fixedly mounted on one side of the PCB board located on the power supply bracket; the height of the display screen bracket is not lower than the height of the power supply bracket; and the display screen bracket is also provided with a display screen electrically connected to the PCB board.

7. The mobile power supply according to claim 6, characterized in that, The power supply bracket includes a base plate for horizontally placing batteries; a first partition plate and a second partition plate are respectively provided at both ends of the base plate; the base plate, the first partition plate and the second partition plate are mutually enclosed to form a semi-enclosed installation groove.

8. The mobile power supply according to claim 7, wherein The display screen bracket is located on the outside of the first partition; a plurality of high-voltage components are fixedly installed on the PCB board on the outside of the second partition; the area where the high-voltage components are located forms a high-voltage zone; the high-voltage components are isolated from the battery by the second partition.

9. The mobile power supply according to claim 7 or 8, characterized in that, The two side walls of the base plate extend upward along the outer surface of the battery; the outer edges of the two side walls close to one end of the first partition are symmetrically provided with grooves connected to the mounting groove.

10. The mobile power supply according to claim 6, characterized in that, The shell includes a bottom shell, a face shell detachably connected to the bottom shell, and a transparent protective shell adapted to and fixedly connected to the face shell; a window corresponding to the display screen is provided on the face shell; a plurality of reinforcing ribs are circumferentially provided on the inner surface of the side wall of the bottom shell; the PCB board is clamped and fixed to the bottom shell by the plurality of reinforcing ribs.

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