A safe and waterproof portable power bank

Abstract

This invention relates to the technical field of portable power banks, and more particularly to a safe and waterproof portable power bank, comprising a housing and: a rigid central frame; at least two functional modules, each including a battery module and a circuit control module, each functional module being an independently sealed unit; wherein, the central frame is provided with standardized connecting parts corresponding to each functional module, and each functional module can be detachably locked to the central frame through the standardized connecting parts; the standardized connecting parts include a mechanical interface for achieving mechanical connection and sealing, and an electrical interface for achieving electrical connection; the mechanical interface is configured to establish a seal before the engagement of the electrical interface during the locking process between the functional module and the central frame. This invention features a modular mechanical architecture, solving the problems of traditional portable power banks being difficult to maintain, having easily damaged interfaces, and having poor heat dissipation.

Description

Technical Field

[0001] This invention relates to the technical field of portable power banks, and in particular to a safe and waterproof portable power bank. Background Technology

[0002] With the widespread adoption and performance improvements of portable electronic devices such as smartphones and tablets, power banks have become an indispensable accessory in modern life. While pursuing higher capacity and faster charging speeds, the market also places higher demands on product reliability, durability, and environmental friendliness. Consumers expect power banks to not only be safe and reliable in daily use, but also to be able to be maintained or upgraded economically and conveniently when some components age or are accidentally damaged, rather than being discarded entirely. This is not only related to user experience but also aligns with the industry trend of sustainable development.

[0003] Currently, the vast majority of portable power banks on the market adopt a one-piece packaging structure. Its typical structure includes: a complete outer shell assembled from a front and back cover using screws or ultrasonic welding; a fixed lithium-ion battery pack encapsulated within the shell; control circuitry, charging / discharging interfaces, and switches soldered onto the mainboard; and indicator light guides fixed to the inside of the shell by adhesive or clips. Its working principle is as follows: the battery pack is soldered to the mainboard via wires, and the interfaces and switches on the mainboard are exposed through pre-drilled openings in the shell. Users activate the device by pressing a physical switch and charge / discharge through the interfaces.

[0004] The maintainability and upgradeability of existing products are extremely poor. Failure of any part may lead to the scrapping of the entire machine or face expensive and complicated professional repairs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, one of the objectives of this invention is to provide a modular mechanical architecture that solves the problems of traditional power banks being difficult to maintain, having easily damaged interfaces, and having poor heat dissipation, thus creating a safe and waterproof power bank.

[0006] The above-mentioned objective of this invention is achieved through the following technical solutions: A safe and waterproof power bank includes a housing and: A rigid central skeleton; At least two functional modules, including a battery module and a circuit control module, each of which is an independent sealed unit; The central frame is provided with standardized connecting parts corresponding to each functional module, and each functional module can be detachably locked to the central frame through the standardized connecting parts. The standardized connection includes a mechanical interface for achieving mechanical connection and sealing, and an electrical interface for achieving electrical connection; the mechanical interface is configured to establish a seal before the engagement of the electrical interface during the locking process of the functional module and the central frame.

[0007] In a further embodiment of the safe and waterproof power bank created by this invention, the mechanical interface includes: An annular seal is provided on the end face of the functional module, and a rigid sealing plane is provided on the central frame corresponding to the end face of the functional module. When the functional module is locked to the central frame, the annular seal is compressed between the end face of the functional module and the rigid sealing plane, forming a sealing ring around the electrical interface.

[0008] In a further embodiment of the safe and waterproof power bank created by the present invention, the standardized connection part further includes a guiding mechanism and a locking mechanism; The guiding mechanism is used to guide the functional modules to align with the central skeleton along a preset path; The locking mechanism is used to fix the functional module to the central frame when the functional module reaches the preset position, and to make the annular seal reach a predetermined compression amount.

[0009] In a further embodiment of the safe and waterproof power bank created by the present invention, the locking mechanism includes a locking slider movably disposed on the central frame and an elastic element providing elastic force to the locking slider; The functional module is provided with a locking groove that cooperates with the locking slider; In the locked state, the locking slider is engaged in the locking groove under the action of the elastic element.

[0010] In a further embodiment of the safe and waterproof power bank created by the present invention, the locking mechanism further includes a sealing status indicator component; The sealing status indicator component is linked to the locking slider and is configured to display an indication that the seal is in place when the locking slider is engaged in the locking groove.

[0011] In a further embodiment of the safe and waterproof power bank created by the present invention, a heat conductor extending along its length is integrated inside the central frame. The outer casing of the functional module has a heat-conducting area at the location of the corresponding internal heating element; When the functional module is attached to the central frame, the heat-conducting area of ​​the functional module is thermally connected to the heat-conducting body of the central frame through a heat-conducting medium.

[0012] In a further embodiment of the safe and waterproof power bank created by the present invention, the annular seal is mounted on a floating pressure ring, and the floating pressure ring is connected to the main body shell of the functional module through an elastic connector.

[0013] In a further embodiment of the safe and waterproof power bank created by the present invention, the charging interface integrated on the circuit control module is integrally formed with the outer shell of the circuit control module through an insert injection molding process.

[0014] In a further embodiment of the safe and waterproof power bank created by the present invention, the functional module further includes a lighting module, the lighting module including a sealed lamp head housing, a light source disposed therein, and a non-contact switch mechanism for switching the light source mode.

[0015] A further embodiment of the safe and waterproof power bank created by the present invention includes a tail cap module, which is threadedly connected to the end of the central frame, and the connection interface is provided with an end face sealing structure.

[0016] In summary, the present invention has at least one of the following beneficial technical effects: 1. The portable power bank disclosed in this invention disassembles the traditional integrated portable power bank into independent units such as a "central frame", "battery module", "circuit control module" and "lighting module". Each functional module can be independently packaged, tested and replaced. This fundamental change means that if a single module fails or needs to be upgraded, it is no longer necessary to scrap or disassemble the entire device in a complicated manner. Users only need to replace the faulty module, which greatly improves the service life and practicality of the product. At the same time, the standardized interface allows users to combine batteries of different capacities or lamp heads of different performance according to their needs, realizing the customized configuration of the product and achieving reliability, maintainability and configuration flexibility. 2. The mobile power supply disclosed in this invention operates in the order of "mechanical sealing first, then electrical connection". At the connection interface between each module and the frame, the annular sealing ring on the end face of the module will first form a closed annular sealing cavity after contacting and being pressed with the rigid sealing plane of the frame. Only after this mechanical sealing cavity is established can the female electrical connector inside the module finally be inserted with the male connector on the frame. This sequence ensures that the sensitive electrical contacts always work in a dry and clean microenvironment created by the mechanical seal, completely isolating them from external moisture, dust and corrosive gases. In principle, it eliminates failure modes such as interface oxidation and short circuit, and ensures the long-term reliability and waterproof safety of the electrical connection. 3. The sealing ring of the mobile power supply module disclosed in this invention is not directly rigidly fixed, but is installed on a "floating pressure ring" connected to the module shell through a micro spring. When the module expands and contracts asynchronously with the frame due to temperature changes, the floating pressure ring can undergo a small adaptive displacement to absorb strain and maintain a constant clamping force on the sealing ring. At the same time, the high-precision guide rail and the spring-driven locking slider mechanism ensure that the module can accurately reach the same position every time it is inserted or removed, ensuring that the sealing ring obtains a consistent and sufficient amount of compression, and avoiding sealing failure caused by assembly errors or stress deformation. 4. The mobile power bank disclosed in this invention constructs a centralized heat dissipation system with a "central heat-conducting skeleton" as the main line. Inside each independently sealed functional module, the heat-generating element transfers heat to a specific heat-conducting area on the module shell through a heat-conducting medium. When the module is installed, this heat-conducting area is tightly attached to the continuous metal heat-conducting core embedded in the central skeleton through another high-performance heat-conducting pad. In this way, the heat inside each module is efficiently "converged" to the metal skeleton, which is the main body of the structure, and then dissipated by utilizing the large surface area of ​​the skeleton itself and the heat dissipation fins. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of a safe and waterproof portable power bank disclosed in this invention; Figure 2 This is a schematic diagram of the internal structure of one embodiment of a safe and waterproof portable power bank disclosed in this invention; Figure 3 This is a schematic diagram of the sealing mechanism of an embodiment of a safe and waterproof power bank disclosed in this invention; Figure 4 This is a structural schematic diagram of the rigid sealing plane of an embodiment of a safe and waterproof portable power bank disclosed in this invention; Figure 5 This is a schematic diagram of the locking mechanism of an embodiment of a safe and waterproof power bank disclosed in this invention.

[0018] In the picture, 1. Outer shell; 2. Central frame; 21. Rigid sealing plane; 22. Heat conductor; 23. Locking slider; 231. Elastic element; 3. Functional modules; 31. Guiding mechanism; 32. Locking mechanism; 321. Locking groove; 33. Sealing mechanism; 331. Annular seal; 332. Floating pressure ring. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Reference Figure 1-5The present invention discloses a safe and waterproof power bank, which includes a housing 1, and the housing 1 has at least one charging port and multiple discharging ports.

[0021] The outer casing 1 contains a rigid central frame 2 and multiple detachable independent functional modules 3. The central frame is I-shaped and serves as the core load-bearing and connecting hub of the entire device. It is made of high-strength aluminum alloy through precision machining or injection molding from high-performance engineering plastics. Its structural design ensures the overall mechanical strength.

[0022] Multiple functional modules 3, such as the battery module, circuit control module, and lighting module, are all independent units that have been pre-encapsulated and sealed internally. Each module is coupled to a corresponding standardized connection part on the central frame 2 through a standardized connection interface at its end. The core of this design lies in the fact that the connection process between the module and the frame follows a clear sequence: first, the mechanical connection and seal are established, and then the internal electrical connections are made conductive. This "seal first, connect later" mechanism fundamentally ensures that the electrical interface is in a dry and clean environment formed by the mechanical seal under all circumstances, thus completely solving the problem of traditional interfaces being susceptible to moisture and oxidation leading to failure.

[0023] To achieve reliable mechanical connection and sealing, each standardized connection includes a guide mechanism 31, a locking mechanism 32, and a sealing mechanism 33. An annular groove is provided on the end face of the functional module 3, into which an annular seal 331 made of elastic material is embedded. At the corresponding position on the central frame 2, a high-precision rigid sealing surface 21 is machined. When the user pushes the functional module 3 into the frame along the guide rail, the guide mechanism 31 ensures precise alignment between the two.

[0024] As functional module 3 reaches its final position, its annular seal 331 on its end face first contacts the rigid sealing plane 21 of the frame and is uniformly compressed, thus forming a sealing ring around the future electrical connection area before the electrical connector contacts. To ensure that the module will not accidentally loosen after installation and to guarantee that the seal receives constant compression force, a locking mechanism 32 is also provided at the connection. This mechanism typically includes a spring-driven, movable locking slider 23, which is mounted on the central frame 2. When functional module 3 is inserted, a groove on its side pushes the locking slider 23 to retract; when the module is fully in place, the locking slider 23 quickly pops out under the spring force and locks into the groove, producing a clear "click" sound, completing the mechanical locking. This locking action not only provides a firm holding force but also means that the seal has been compressed to the required design extent.

[0025] To further enhance user experience and safety, the locking mechanism 32 can also be linked to a sealing status indicator component. This indicator component can be a sliding block or rotating disc with dual-color markings. When the locking slider 23 is not engaged, the indicator window displays red; once locking is complete, the linkage mechanism moves the indicator component, shifting the green mark behind the indicator window, providing the user with a direct visual confirmation that the seal is in place. This effectively prevents potential leakage risks caused by improper module installation. Furthermore, considering the potential thermal expansion differences between different material modules and the frame due to temperature variations, the annular seal 331 is not directly and rigidly fixed to the module housing, but rather mounted on a floating pressure ring 332. This floating pressure ring 332 is connected to the module body via circumferentially distributed micro-springs or other elastic connectors. When a slight dimensional change occurs at the interface due to temperature differences, the floating pressure ring 332 can undergo a slight displacement, thereby absorbing stress and ensuring that the pressure on the sealing ring remains uniform and constant, avoiding seal failure due to thermal stress.

[0026] In terms of heat dissipation design, this invention utilizes a central frame 2 to construct a centralized heat dissipation path. The central frame 2 integrates a high thermal conductivity metal core extending along its length as a heat conductor 22. Each functional module 3's outer shell has a dedicated heat-conducting area designed at the location of its corresponding main internal heat-generating element. Heat is transferred to the outer shell area internally via thermal grease, thermal pads, or other media. When the module is installed on the frame, the heat-conducting area of ​​the module's outer shell comes into close contact with the end face of the heat conductor 22 within the central frame 2 through another layer of interfacial thermally conductive medium. In this way, the heat generated inside each module is efficiently conducted to the central heat conductor 22, and then dissipated through the tightly bonded surface of the frame body with heat dissipation fins.

[0027] Specifically, within each functional module 3, the battery module is an independent, sealed unit containing battery cells and a protection board. Its outer casing typically employs processes such as ultrasonic welding to ensure its airtightness. The circuit control module integrates charge / discharge management circuitry, control buttons, and status indicator lights. Notably, the USB and other charging interfaces integrated on this module utilize advanced insert injection molding technology, allowing the metal interface terminals to be seamlessly integrated with the module's plastic casing during a single molding process. This achieves native sealing of the interface itself, eliminating the need for subsequent waterproof plugs.

[0028] The lighting module is also a fully sealed unit, containing LED light sources and optical components. Its switching mode typically uses non-contact triggering methods such as rotary magnetic control, avoiding the need for openings in the housing. Finally, a tail cap module with an end face sealing ring is threaded to the end of the central skeleton 2, providing further protection and auxiliary sealing for the main structure.

[0029] During module installation, when any functional module 3 is aligned with the central frame 2, the guide grooves on both sides of the module housing precisely embed into the guide rails on the frame. This guiding mechanism 31 ensures that the module is inserted along a unique path and direction. In the initial stage of the module's advancement along the guide rail, the annular silicone sealing ring integrated at its end first contacts the high-gloss rigid sealing surface 21 on the frame and begins to be compressed. Following the sequence of "mechanical seal before electrical connection," a closed annular cavity composed of the elastic sealing ring and the rigid surface is initially formed before the electrical connectors make contact.

[0030] As the module continues to advance, the locking and confirmation mechanism begins to operate. The inclined surface of the module's sidewall compresses the spring-driven locking slider 23 within the frame, causing it to contract. When the module is pushed to its designed endpoint, the locking slider 23, under the action of the spring, snaps into the locking groove 321 of the module with a "click." This action has three benefits: First, it provides clear tactile and audible feedback, indicating that the module has reached its installation position; second, it generates a constant holding force through mechanical locking, ensuring that the sealing ring is continuously compressed within the preset deformation, thereby maintaining stable pressure on the sealing mechanism 33; third, the locking action, through an internal linkage mechanism such as a rod or gear, drives a visual indicator, providing the user with intuitive visual confirmation that the seal is in place. At this point, a reliable mechanical connection and static surface seal are established between the module and the frame.

[0031] Subsequently, within the most protected sealed cavity, the electrical connection is securely established. Because the aforementioned mechanical locking occurs at or slightly before the final mating of the electrical connectors, when the male and female electrical connectors are connected, they are effectively within a dry, clean, and sealed space created by the outer sealing ring. This completely isolates them from external moisture and dust contamination, ensuring the long-term reliability and lifespan of the electrical connection. For the circuit control module, its charging interface itself is integrated with the housing through insert injection molding, achieving an inherent seal of the interface and further eliminating weak points.

[0032] During operation, its unique heat dissipation system comes into play. Heat generated within each module is first transferred to specific heat-conducting areas on the inner wall of the module's outer casing via internal thermally conductive media. Since these heat-conducting areas are tightly bonded to the continuous heat-conducting core pillars integrated within the central frame 2 during installation using high-performance thermal pads, the heat is efficiently "collected" and conducted to the metal structure that forms the overall heat dissipation frame. Finally, it is dissipated into the air through large-area heat dissipation fins on the frame's surface. This mechanism unifies the management of distributed heat sources, utilizing the frame as an efficient "heat flow trunk," successfully overcoming the heat dissipation barrier caused by the independent sealing of the modules.

[0033] The core principle of the portable power bank disclosed in this invention is as follows: functional independence and easy maintenance are achieved through modular physical isolation; the reliability of the connection interface is ensured through the sequential control principle of "sealing first and then electrical"; and a stable and durable waterproof effect is obtained by replacing the traditional dynamic sealing with the rigid interface compression sealing principle.

[0034] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A safe and waterproof portable power bank, characterized in that, Including the outer shell (1) and: A rigid central skeleton (2); At least two functional modules (3), the functional modules (3) include a battery module and a circuit control module, and each functional module (3) is an independently sealed unit; The central frame (2) is provided with standardized connecting parts corresponding to each functional module (3), and each functional module (3) can be detachably locked to the central frame (2) through the standardized connecting parts. The standardized connection includes a mechanical interface for achieving mechanical connection and sealing, and an electrical interface for achieving electrical connection; the mechanical interface is configured to establish a seal before the engagement of the electrical interface during the locking process of the functional module (3) and the central frame (2).

2. The safe and waterproof power bank according to claim 1, characterized in that, The mechanical interface includes: An annular seal (331) is provided on the end face of the functional module (3), and a rigid sealing plane (21) is provided on the central frame (2) corresponding to the end face of the functional module (3). When the functional module (3) is attached to the central frame (2), the annular seal (331) is compressed between the end face of the functional module (3) and the rigid sealing plane (21) to form a sealing ring around the electrical interface.

3. The safe and waterproof power bank according to claim 2, characterized in that, The standardized connection part also includes a guide mechanism (31) and a locking mechanism (32). The guiding mechanism (31) is used to guide the functional module (3) to align with the central skeleton (2) along a preset path; The locking mechanism (32) is used to fix the functional module (3) to the central frame (2) when the functional module (3) reaches the preset position, and to make the annular seal (331) reach the predetermined compression amount.

4. The safe and waterproof power bank according to claim 3, characterized in that, The locking mechanism (32) includes a locking slider (23) movably disposed on the central frame (2) and an elastic element (231) providing elastic force to the locking slider (23). The functional module (3) is provided with a locking groove (321) that cooperates with the locking slider (23). In the locked state, the locking slider (23) is engaged in the locking groove (321) under the action of the elastic element (231).

5. The safe and waterproof power bank according to claim 4, characterized in that, The locking mechanism (32) also includes a sealing status indicator component; The sealing status indicator component is linked to the locking slider (23) and is configured to display an indication that the seal is in place when the locking slider (23) is engaged in the locking groove (321).

6. The safe and waterproof portable power bank according to any one of claims 1 to 5, characterized in that, The central skeleton (2) has an integrated heat conductor (22) extending along its length. The outer shell of the functional module (3) has a heat-conducting area at the position corresponding to the internal heating element; When the functional module (3) is attached to the central frame (2), the heat-conducting area of ​​the functional module (3) is thermally connected to the heat conductor (22) of the central frame (2) through the heat-conducting medium.

7. The safe and waterproof power bank according to claim 2, characterized in that, The annular seal (331) is mounted on a floating pressure ring (332), which is connected to the main body shell of the functional module (3) via an elastic connector.

8. The safe and waterproof power bank according to claim 1, characterized in that, The charging interface integrated on the circuit control module is integrally formed with the outer shell of the circuit control module through an insert injection molding process.

9. The safe and waterproof power bank according to claim 1, characterized in that, The functional module (3) also includes a lighting module, which includes a sealed lamp head housing, a light source disposed therein, and a non-contact switch mechanism for switching the light source mode.

10. The safe and waterproof power bank according to claim 1, characterized in that, It also includes a tail cap module, which is threadedly connected to the end of the central frame (2), and the connection interface is provided with an end face sealing structure.

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