Foldable mobile power supply
The foldable power bank design solves the problem of poor portability of large-capacity power banks, enabling convenient switching between small-sized carrying in the folded state and large-capacity use in the combined state.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU NEW STRATEGY TECH CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-07
AI Technical Summary
Existing high-capacity power banks are bulky and difficult to carry, making them unsuitable for small storage spaces such as waist bags or pockets.
The design incorporates a foldable power bank that combines a first shell and a second shell to switch between folded and folded states. Magnetic coupling and separation components ensure stable electrical connections and convenient operation.
When not in use, it can be folded into a small form for easy carrying, and when in use, its capacity can be expanded to meet needs, improving portability and ease of operation.
Smart Images
Figure CN224473073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile device accessories technology, and in particular to a foldable power bank. Background Technology
[0002] Portable power banks, also known as power banks, are designed to provide temporary power to other mobile devices. With the widespread use of mobile devices such as smartphones, tablets, and wearable devices, portable power banks have become an essential accessory in daily life. However, current technology often results in large-capacity portable power banks that are inconvenient to store in small storage spaces such as waist bags or pockets, leading to poor portability.
[0003] It should be noted that the above content is only used to help understand the technical solution of this utility model, and does not represent an admission that the above content is prior art. Utility Model Content
[0004] The main purpose of this invention is to propose a foldable portable power bank, which is designed to be easily placed and stored in small storage spaces such as waist bags and pockets to improve portability.
[0005] To achieve the above objectives, this utility model proposes a foldable portable power bank;
[0006] Specifically, the foldable power bank includes:
[0007] A first housing, wherein a first power module is disposed inside the first housing; an insertion cavity is disposed on the side of the first housing, and a first electrical connector is disposed inside the insertion cavity;
[0008] A second housing, inside which a second power module is disposed; an insert is disposed on the side of the second housing, and the insert is provided with a second electrical connector;
[0009] A charging interface and a power transmission interface are disposed in the first housing or the second housing, and the charging interface and the power transmission interface are electrically connected to the first power module or the second power module;
[0010] The first housing and the second housing can be switched between a folded state and a combined state;
[0011] When switched to the folded state, the first housing and the second housing fit together, and the insert is separated from the insertion cavity;
[0012] When switched to the merged state, the insert is inserted into the insertion cavity, and the first electrical connector and the second electrical connector are electrically connected to each other so that the first power module and the second power module are electrically connected to each other.
[0013] In one embodiment, the foldable power bank further includes a connecting strap, the two ends of which are respectively connected to the first housing and the second housing.
[0014] In one embodiment, the two ends of the connecting strip are respectively connected to the inner wall of the insertion cavity and the free end of the insert; and an automatic retraction winding device is provided inside the first housing or the second housing, and one end of the connecting strip is connected to the automatic retraction winding device.
[0015] In one embodiment, a first magnet is provided on the side of the first housing that is to be attached to the second housing, and a second magnet is provided on the side of the second housing that is to be attached to the first housing, and the first magnet and the second magnet are magnetically attracted to each other.
[0016] In one embodiment, a third magnet is provided on the inner wall of the insertion cavity, and a fourth magnet is provided on the free end of the insert, wherein the third magnet and the fourth magnet are magnetically attracted to each other.
[0017] In one embodiment, the insert is provided with two fourth magnets, which are symmetrically arranged on opposite sides of the free end of the insert.
[0018] In one embodiment, the second housing is provided with a separation component for overcoming the magnetic attraction between the third magnet and the fourth magnet, so as to separate the first housing from the second housing.
[0019] In one embodiment, the separating assembly includes a first rod and a second rod arranged perpendicularly to each other. The interior of the second housing is provided with a first sliding groove and a second sliding groove. The first rod is slidably connected to the first sliding groove, and the second rod is slidably connected to the second sliding groove. A first end of the first rod protrudes outside the first sliding groove, and a second end of the first rod has a protrusion. A recess is provided on the side of the second rod, and an inclined mating surface is provided between the protrusion and the recess. When the first rod moves towards the second rod, so that the protrusion engages with the recess along the inclined surface, the second rod slides along the second sliding groove, so that the end of the second rod extends out of the insert and abuts against the inner wall of the insertion cavity.
[0020] In one embodiment, the first sliding groove is provided with a first reset cavity; the first rod is fixedly sleeved with a first limiting ring, and the first rod is movably sleeved with a first spring member, the two ends of the first spring member respectively abutting the first reset cavity and the first limiting ring; and / or, the second sliding groove is provided with a second reset cavity; the second rod is fixedly sleeved with a second limiting ring, and the second rod is movably sleeved with a second spring member, the two ends of the second spring member respectively abutting the second reset cavity and the second limiting ring.
[0021] In one embodiment, the separation components are provided in two sets, and the two sets of separation components are symmetrically arranged on opposite sides of the second housing.
[0022] The technical solution of this utility model involves setting up a first housing and a second housing, wherein a first power module and a second power module are respectively housed inside the first housing and the second housing. Through the combined design of the first and second housings, switching between a folded state and a combined state can be achieved, allowing users to flexibly choose the combination mode according to the usage scenario. Understandably, when not in use, the first and second housings are switched to the folded state, making them fit together. This significantly reduces the lateral area of the power bank, making it easier to place in small storage spaces such as waist bags or pockets, thus improving portability. When in use, the first and second housings are switched to the combined state, using an insert to connect with the insert cavity. At this time, the first and second electrical connectors are electrically connected, allowing the first and second power modules to be electrically connected to each other, thereby expanding the capacity and meeting users' needs for a large-capacity power bank. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram of the structure of an embodiment of the foldable portable power supply provided by this utility model;
[0025] Figure 2 A schematic diagram of the combined state of an embodiment of the foldable power bank provided by this utility model;
[0026] Figure 3 A schematic diagram of the folded state of one embodiment of the foldable power bank provided by this utility model;
[0027] Figure 4 A second schematic diagram of the folded state of an embodiment of the foldable power bank provided by this utility model;
[0028] Figure 5 A schematic diagram of the structure of the detachable components in one embodiment of the foldable power bank provided by this utility model;
[0029] Figure 6 The second schematic diagram shows the structure of the detachable component in one embodiment of the foldable power bank provided by this utility model.
[0030] Explanation of reference numerals in the attached figures:
[0031] 100, First housing; 110, First magnet; 200, Insertion cavity; 300, Second housing; 310, Second magnet; 400, Insertion piece; 410, Second electrical connector; 420, Fourth magnet; 500, Charging interface; 600, Power transmission interface; 700, Connecting strap; 800, Separation assembly; 810, First rod; 811, Protrusion; 812, First limiting ring; 813, First spring; 820, Second rod; 821, Recess; 822, Second limiting ring; 823, Second spring; 830, First sliding groove; 831, First reset cavity; 840, Second sliding groove; 841, Second reset cavity; 850, Mating inclined surface;
[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0033] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0035] Furthermore, it should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0036] In existing technologies, large-capacity power banks often come with a large size, making them inconvenient to place in small storage spaces such as waist bags or pockets, resulting in poor portability.
[0037] To address the aforementioned technical problems, this utility model proposes a foldable portable power bank.
[0038] Please see Figures 1 to 4 In one embodiment of this utility model, the foldable power bank includes:
[0039] A first housing 100 is provided inside which a first power module (not shown in the attached drawing) is disposed; an insertion cavity 200 is provided on the side of the first housing 100, and a first electrical connector (not shown in the attached drawing) is disposed inside the insertion cavity 200.
[0040] A second housing 300 is provided inside the second housing 300, and a second power module (not shown in the attached figure) is provided on the side of the second housing 300, and a second electrical connector 410 is provided on the insert 400.
[0041] A charging interface 500 and a power transmission interface 600 are disposed on the first housing 100 or the second housing 300, and the charging interface 500 and the power transmission interface 600 are electrically connected to the first power module or the second power module; in this embodiment, both the charging interface 500 and the power transmission interface 600 are disposed on the first housing 100; at this time, the charging interface 500 and the power transmission interface 600 are electrically connected to the first power module;
[0042] The first housing 100 and the second housing 300 can be switched to a folded state and a combined state;
[0043] When switching to collapsed mode, refer to Figures 3 to 4 The first housing 100 and the second housing 300 are fitted together, and the insert 400 is separated from the insert cavity 200.
[0044] When switching to merge mode, refer to Figure 2The insert 400 is inserted into the insertion cavity 200, and at this time the first electrical connector and the second electrical connector 410 are electrically connected so that the first power module and the second power module are electrically connected to each other.
[0045] The technical solution of this embodiment involves setting up a first housing 100 and a second housing 300, wherein a first power module and a second power module are respectively disposed inside the first housing 100 and the second housing 300. Through the combined design of the first housing 100 and the second housing 300, switching between a folded state and a combined state can be realized, so that users can flexibly choose the combination mode according to the usage scenario. It can be understood that when not in use, the first housing 100 and the second housing 300 are switched to the folded state, so that the first housing 100 and the second housing 300 are close together. At this time, the lateral area of the power bank is greatly reduced, so it is easy to place and store in small storage spaces such as waist bags and pockets, thereby improving portability. When charging or power transmission is performed, the first housing 100 and the second housing 300 are switched to the combined state, and the insert 400 is inserted into the insert cavity 200. At this time, the first electrical connector and the second electrical connector 410 are electrically connected, so that the first power module and the second power module can be electrically connected to each other, thereby expanding the capacity and meeting the user's demand for a large-capacity power bank.
[0046] The charging interface 500 is an interface used to output the electrical energy stored inside the power bank to external devices (such as smartphones, tablets, laptops, etc.). Its main function is to transfer electrical energy from the power bank to the external device that needs charging. In this embodiment, the charging interface 500 is set as a USB interface.
[0047] The power transmission interface 600 is an interface used to charge the battery module (such as the first power module or the second power module) inside the power bank from an external power source (such as a power adapter, USB power supply, car charger, etc.). Its main function is to receive electrical energy provided by the external power source and transmit it to the battery module of the power bank for storage. In this embodiment, the power transmission interface 600 is set as a Type-C interface.
[0048] The first and second electrical connectors 410 are electrically connected, allowing the first and second power modules to transfer electrical energy to form a high-capacity battery module, ensuring smooth charging and power transmission operations of the power bank. In this embodiment, both the first and second electrical connectors 410 are made of highly conductive copper alloy with gold plating to improve oxidation resistance and conductivity. They are designed with multi-point contact to ensure rapid and accurate contact between the first and second electrical connectors 410 during insertion of the insert 400 into the insertion cavity 200, forming a stable electrical connection. Both the first and second electrical connectors 410 are equipped with overcurrent protection devices to prevent equipment damage due to abnormal conditions during the electrical connection process.
[0049] As a preferred embodiment of the above embodiments, refer to Figure 1 The foldable power bank also includes a connecting strap 700, with its two ends connected to the first housing 100 and the second housing 300, respectively. This design prevents the first housing 100 and the second housing 300 from accidentally separating during folding or merging, ensuring a more stable connection between them.
[0050] Furthermore, the two ends of the connecting strap 700 are respectively connected to the inner wall of the insertion cavity 200 and the free end of the insert 400; and an automatic retraction winding device (not shown in the attached figure) is provided inside the first housing 100 or the second housing 300, with one end of the connecting strap 700 connected to the automatic retraction winding device. This arrangement, with the two ends of the connecting strap 700 respectively located on the inner wall of the insertion cavity 200 and the free end of the insert 400, ensures that when the first housing 100 and the second housing 300 are switched to a merged state, the connecting strap 700 can be completely retracted within it, making its presence invisible from the outside and improving the overall aesthetics. Simultaneously, the automatic retraction winding device automatically retracts the connecting strap 700, preventing it from becoming loose or tangled during use, thus improving the user experience; and preventing the connecting strap 700 from accumulating at the connection gap between the insertion cavity 200 and the insert 400, which could prevent the first housing 100 and the second housing 300 from merging smoothly.
[0051] The automatic retractable cable reel device is a device used for storing and managing cables. Since this technology is prior art, its structure will not be described in detail here. Generally, it consists of a housing, a reel, a coil spring, and a drive shaft. The housing serves as the external protective structure and contains a cable reel cavity to house the reel and coil spring. The housing also has a cable outlet for cable entry and exit. The reel is located within the cable reel cavity and has grooves on its outer surface for neatly winding the cable. A central hole on the reel is used to mount the coil spring and drive shaft. The coil spring, made of a highly elastic material, is fixed at one end to the reel's hole and at the other end to the inner wall of the housing. Its elastic force drives the reel to rotate, achieving automatic cable retraction. The drive shaft connects the coil spring and the reel, ensuring effective transmission of the elastic force. Overall, the automatic retractable cable reel device achieves automatic cable storage through the elastic force of the coil spring.
[0052] As a preferred embodiment of the above embodiments, refer to Figures 1 to 4 A first magnet 110 is provided on the side of the first housing 100 that is to be fitted with the second housing 300, and a second magnet 310 is provided on the side of the second housing 300 that is to be fitted with the first housing 100. The first magnet 110 and the second magnet 310 are magnetically attracted to each other. This arrangement ensures that the first housing 100 and the second housing 300 fit tightly together in the folded state, preventing separation of the housings due to external force and improving product stability. At the same time, users can quickly assemble and detach the first housing 100 and the second housing 300 through a simple magnetic operation, making operation more convenient.
[0053] As a preferred embodiment of the above embodiments, refer to Figures 1 to 4 A third magnet (not shown in the attached diagram) is provided on the inner wall of the insertion cavity 200, and a fourth magnet 420 is provided on the free end of the insert 400. The third magnet and the fourth magnet 420 are magnetically attracted to each other. This arrangement ensures that the insert 400 and the insertion cavity 200 are tightly connected in the joined state, thereby guaranteeing a more stable electrical connection between the first and second electrical connectors 410 and avoiding charging problems caused by poor contact. Simultaneously, the magnetic force guides the insert 400 to accurately insert into the insertion cavity 200, improving user convenience and efficiency.
[0054] Furthermore, the insert 400 is provided with two fourth magnets 420, which are symmetrically arranged on opposite sides of the free end of the insert 400. This arrangement allows the symmetrically arranged fourth magnets 420 to provide a more uniform magnetic attraction force, further enhancing the connection stability between the insert 400 and the insertion cavity 200 and ensuring the reliability of the electrical connection.
[0055] As a preferred embodiment of the above embodiments, the second housing 300 is provided with a separation component 800. The separation component 800 is used to overcome the magnetic attraction force of the third magnet and the fourth magnet 420 to separate the first housing 100 and the second housing 300 from each other. With this configuration, the separation component 800 can overcome the magnetic attraction force, making it convenient for the user to separate the first housing 100 and the second housing 300 from their combined state, avoiding separation difficulties caused by excessive magnetic attraction force.
[0056] There are many specific structures for the separation component 800. In this embodiment, refer to... Figures 5 to 6 The separation assembly 800 includes a first rod 810 and a second rod 820 arranged perpendicularly to each other. The interior of the second housing 300 is provided with a first sliding groove 830 and a second sliding groove 840. The first rod 810 is slidably connected in the first sliding groove 830, and the second rod 820 is slidably connected in the second sliding groove 840. The first end of the first rod 810 is exposed outside the first sliding groove 830, and the second end of the first rod 810 is provided with a protrusion 811. The side of the second rod 820 is provided with a recess 821, and there is an inclined mating surface 850 between the protrusion 811 and the recess 821. When the first rod 810 moves toward the second rod 820 so that the protrusion 811 is engaged with the recess 821 along the mating surface 850, the second rod 820 slides along the second sliding groove 840 so that the end of the second rod 820 extends out of the insert 400 and abuts against the inner wall of the insertion cavity 200. With this configuration, since the first end of the first rod 810 is exposed outside the first sliding groove 830, the user can press the first end of the first rod 810 to move the first rod 810 along the first sliding groove 830 toward the second rod 820. At this time, the protrusion 811 at the second end of the first rod 810 is engaged with the recess 821 along the mating slope 850. Since the mating slope 850 is inclined, under the influence of action and reaction forces, the second rod 820 is driven to slide along the second sliding groove 840, so that the end of the second rod 820 is gradually exposed outside the second sliding groove 840, and finally extends out of the insert 400 and abuts against the inner wall of the insertion cavity 200, so that the insert 400 and the insertion cavity 200 are separated from each other. This achieves the purpose of overcoming the magnetic attraction of the third magnet and the fourth magnet 420 to separate the first housing 100 and the second housing 300 from each other.
[0057] Furthermore, the first sliding groove 830 is provided with a first reset cavity 831; the first rod 810 is fixedly sleeved with a first limiting ring 812, and the first rod 810 is movably sleeved with a first spring member 813, the two ends of the first spring member 813 respectively abutting against the first reset cavity 831 and the first limiting ring 812; and / or, the second sliding groove 840 is provided with a second reset cavity 841; the second rod 820 is fixedly sleeved with a second limiting ring 822, and the second rod 820 is movably sleeved with a second spring member 823, the two ends of the second spring member 823 respectively abutting against the second reset cavity 841 and the second limiting ring 822. With this configuration, the first spring member 813 and the second spring member 823 can achieve automatic reset of the first rod 810 and the second rod 820, allowing the separation assembly 800 to automatically return to its initial state after use, facilitating the next use. Understandably, during the process of the user applying pressure to drive the first rod 810 and the second rod 820 to slide, as shown in the attached... Figure 6 As shown, the first limiting ring 812 of the first rod 810 combines with the first reset cavity 831 to compress the first spring member 813; similarly, the second limiting ring 822 of the second rod 820 combines with the second reset cavity 841 to compress the second spring member 823; when the first housing 100 and the second housing 300 separate, and the user releases the pressing pressure applied to the first rod 810, as shown in the attached diagram... Figure 5 As shown, the first spring 813 and the second spring 823 are elastically applied to reset the first rod 810 and the second rod 820.
[0058] Furthermore, two sets of separation components 800 are provided, symmetrically arranged on opposite sides of the second housing 300. This arrangement allows the user to simultaneously operate the separation components 800 on both sides of the second housing 300, quickly overcoming the magnetic attraction between the third and fourth magnets 420 to separate the first housing 100 and the second housing 300. This symmetrical arrangement makes the separation operation more efficient, saving the user time and effort.
[0059] It should be noted that the other contents of the foldable power bank disclosed in this utility model are existing technologies and will not be described in detail here.
[0060] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any application of this utility model directly or indirectly in other related technical fields is included within the patent protection scope of this utility model.
Claims
1. A foldable portable power bank, characterized in that, The foldable power bank includes: A first housing, wherein a first power module is disposed inside the first housing; an insertion cavity is disposed on the side of the first housing, and a first electrical connector is disposed inside the insertion cavity; A second housing, inside which a second power module is disposed; an insert is disposed on the side of the second housing, and the insert is provided with a second electrical connector; A charging interface and a power transmission interface are disposed in the first housing or the second housing, and the charging interface and the power transmission interface are electrically connected to the first power module or the second power module; The first housing and the second housing can be switched between a folded state and a combined state; When switched to the folded state, the first housing and the second housing fit together, and the insert is separated from the insertion cavity; When switched to the merged state, the insert is inserted into the insertion cavity, and the first electrical connector and the second electrical connector are electrically connected to each other so that the first power module and the second power module are electrically connected to each other.
2. The foldable power bank as described in claim 1, characterized in that: The foldable power bank also includes a connecting strap, with its two ends connected to the first housing and the second housing, respectively.
3. The foldable power bank as described in claim 2, characterized in that: The two ends of the connecting strip are respectively connected to the inner wall of the insertion cavity and the free end of the insert; and an automatic retraction winding device is provided inside the first housing or the second housing, and one end of the connecting strip is connected to the automatic retraction winding device.
4. The foldable power bank as described in claim 1, characterized in that: The first housing has a first magnet on the side that fits into the second housing, and the second housing has a second magnet on the side that fits into the first housing. The first magnet and the second magnet are magnetically attracted to each other.
5. The foldable power bank as described in claim 1, characterized in that: The inner wall of the insertion cavity is provided with a third magnet, and the free end of the insertion piece is provided with a fourth magnet, and the third magnet and the fourth magnet are magnetically attracted to each other.
6. The foldable power bank as described in claim 5, characterized in that: The insert is provided with two fourth magnets, which are symmetrically arranged on opposite sides of the free end of the insert.
7. The foldable power bank as described in claim 5, characterized in that: The second housing is provided with a separation component, which is used to overcome the magnetic attraction between the third magnet and the fourth magnet in order to separate the first housing from the second housing.
8. The foldable power bank as described in claim 7, characterized in that: The separation assembly includes a first rod and a second rod arranged perpendicularly to each other. The interior of the second housing is provided with a first sliding groove and a second sliding groove. The first rod is slidably connected in the first sliding groove, and the second rod is slidably connected in the second sliding groove. The first end of the first rod protrudes outside the first sliding groove, and the second end of the first rod has a protrusion. The side of the second rod has a recess, and there is an inclined mating surface between the protrusion and the recess. When the first rod moves toward the second rod so that the protrusion engages with the recess along the mating surface, the second rod slides along the second sliding groove so that the end of the second rod extends out of the insert and abuts against the inner wall of the insertion cavity.
9. The foldable power bank as described in claim 8, characterized in that: The first sliding groove is provided with a first reset cavity; the first rod is fixedly sleeved with a first limiting ring, and the first rod is movably sleeved with a first spring member, the two ends of the first spring member respectively abutting the first reset cavity and the first limiting ring; And / or, the second sliding groove is provided with a second reset cavity; the second rod is fixedly sleeved with a second limiting ring, and the second rod is movably sleeved with a second spring member, the two ends of the second spring member respectively abutting the second reset cavity and the second limiting ring.
10. The foldable power bank as described in claim 7, characterized in that: The separation components are provided in two sets, and the two sets of separation components are symmetrically arranged on opposite sides of the second housing.