A portable power supply with quick replaceable battery

Abstract

The utility model provides a portable power bank of quick replacement battery, its shell is provided with the ear of third through groove, uses the belt to pass third through groove after can be wound in arm or leg, need not hold this power bank, therefore is more convenient to carry, and, the structure of this power bank is more compact, less component, when wearing, weight is lighter, and, the cover body is hinged with first main part through torsional spring hinge, can realize the opening and closing of cover body through simple folding action, can replace battery fast, realizes almost no pause continuous power supply, avoids the inconvenience caused by the fact that ordinary power bank still needs to charge to use after power consumption.

Description

Technical Field

[0001] This utility model relates to the field of mobile power technology, and in particular to a portable mobile power bank with a quickly replaceable battery. Background Technology

[0002] As smartphones and other electronic devices become increasingly powerful and consume more power, their battery life has become a critical issue. Traditional charging methods require connecting the device to a power adapter or using a regular power bank.

[0003] In outdoor scenarios such as food delivery riders taking orders, couriers delivering goods, outdoor sports, commuting to and from work, and traveling, or when people don't want to carry a bag, ordinary power banks are inconvenient to carry. Furthermore, as the power of existing power banks increases, their weight and size also increase, making them too heavy to wear directly on the arm or thigh with a strap. In addition, ordinary power banks can generally only charge a phone two to three times when fully charged, and must be recharged after the power is depleted. They cannot support the larger single power demand in high-power application scenarios such as outdoor shooting and video recording, or charging tablets and laptops. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a solution that addresses the problems of existing power banks lacking portable devices, being too heavy and bulky to carry, and having limited single-use power.

[0005] To address the aforementioned problems and other related issues, this utility model provides a portable power bank with quickly replaceable batteries, comprising: a battery compartment, the battery compartment including a first main body, a cover, a torsion spring hinge, a first connecting part, and a second connecting part; the first main body has a cubic structure, and its interior has a plurality of first chambers extending vertically through the upper and lower end faces of the first main body; the first connecting part is fixed to the outer surface of the side wall of the first main body, and the upper end face of the first connecting part is flush with the upper end face of the first main body; the second connecting part is disposed on the cover; the position of the second connecting part corresponds to the first connecting part, and the two are connected to each other by the torsion spring hinge to realize the folding and opening of the first main body and the cover relative to the torsion spring hinge; the lower end face of the cover is provided with an upper electrode plate corresponding to the working battery, and when the cover is in the closed state, the upper electrode plate abuts against the upper end of the working battery; a plurality of working batteries are respectively housed in the corresponding first chambers; an accessory compartment is fixed below the battery compartment; the accessories... The internal compartment has a second chamber; the front side wall of the accessory compartment has a first opening, the display device is embedded in the first opening, and together with the step-down device, it is housed in the second chamber; the lower side wall of the accessory compartment has a first through groove; the upper end face of the accessory compartment has a lower electrode plate corresponding to the working battery, and when the cover is closed, one side of the lower electrode plate abuts against the lower end of the working battery, and the other side is electrically connected to the input terminal of the step-down device; the outer shell covers and fixes the battery compartment first body and the accessory compartment to the outside; the lower side wall of the outer shell has a second through groove corresponding to the first through groove; a pair of ears are symmetrically arranged on the left and right sides of the outer shell, and a third through groove is provided on each ear; the front side wall of the outer shell has a second opening corresponding to the first opening; and the rear side wall of the outer shell has a first clearance groove for the torsion spring hinge; the strap passes through the third through groove and is wrapped around the outer perimeter of the arm or leg, thereby fixing the power bank to the limb.

[0006] In one embodiment of this application, the accessory compartment includes a second body and an upper plate. The top of the second body is open, and a limiting structure is provided on the inner wall of the second body. The lower end face and the side face of the upper plate abut against the limiting structure and the inner side wall of the second body, respectively, and are detachably fixed to the second body.

[0007] In one embodiment of this application, the inner surface of the rear sidewall of the accessory compartment is provided with a concave-convex structure to match the shape and structure of the pressure reducing device, thereby limiting the pressure reducing device.

[0008] In one embodiment of this application, a plurality of forward-extending columnar protrusions are provided on the inner surface of the rear side wall of the accessory compartment to limit the display device.

[0009] In one embodiment of this application, an L-shaped first protrusion extends below the front sidewall of the cover, and a first slot is provided at a corresponding position above the front sidewall of the first body. When the cover is in a closed state, the first protrusion and the first slot engage with each other to achieve locking between the cover and the first body; a second clearance groove is provided on the outer shell to avoid the first slot.

[0010] In one embodiment of this application, the strap includes elastic Velcro.

[0011] In one embodiment of this application, the type of battery includes a rechargeable lithium battery; wherein the rechargeable lithium battery includes an 18650 lithium battery.

[0012] In one embodiment of this application, the outer shell is made of elastic TPU material.

[0013] In one embodiment of this application, the battery compartment and accessory compartment are made of PETG material.

[0014] In one embodiment of this application, a swing power generation module and a voltage regulator are further included, wherein the swing power generation module and the voltage regulator are housed within the second chamber; wherein the swing power generation module includes a cantilever beam, a counterweight, a magnet, and a coil, one end of the cantilever beam is fixed to the upper inner wall of the second chamber, and the other end is fixed to the counterweight and the magnet, the coil is fixedly disposed below the magnet and maintains a gap with the magnet; the output terminal of the swing power generation module is electrically connected to the input terminal of the voltage regulator, and the output terminal of the voltage regulator is electrically connected in parallel with the lower electrode plate.

[0015] As described above, the present invention has the following beneficial effects:

[0016] This application discloses a portable power bank with quickly replaceable batteries. Due to the presence of ear-shaped supports on both sides of the outer casing and a third through-slot, a strap can pass through these slots to secure the power bank to the arm or leg. Compared to traditional handheld or bagged designs, this structure allows for a snug fit, freeing up the hands, and maintains relative stability during walking and exercise, solving the problem of inconvenience in carrying existing products. Furthermore, the step-down device and display device are built into the accessory compartment and are visible through a second opening in the outer casing, reducing the need for external modules and wiring. The first chamber containing multiple batteries is arranged in an orderly manner within the first main body, resulting in a more compact structure, fewer components, and lighter weight for the same capacity. Since the cover is hinged to the first main body via a torsion spring hinge, it can be opened and closed with a simple folding motion, enabling quick battery replacement and providing almost uninterrupted continuous power supply. This avoids the inconvenience of needing to recharge after a regular power bank has run out of power. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of the battery compartment in one embodiment of this application.

[0018] Figure 2 The diagram shown is a structural schematic of the battery compartment in one embodiment of this application.

[0019] Figure 3 The diagram shown is a structural schematic of the cover in one embodiment of this application.

[0020] Figure 4 The diagram shown is a structural schematic of the cover in one embodiment of this application.

[0021] Figure 5 The diagram shown is a structural schematic of a torsion spring hinge according to an embodiment of this application.

[0022] Figure 6 The diagram shown is a structural schematic of the parts compartment in one embodiment of this application.

[0023] Figure 7 The diagram shown is a structural schematic of the parts compartment in one embodiment of this application.

[0024] Figure 8 The diagram shown is a structural schematic of the upper plate in one embodiment of this application.

[0025] Figure 9 The diagram shown is a structural schematic of the outer casing in one embodiment of this application.

[0026] Figure 10 The diagram shown is a structural schematic of the outer casing in one embodiment of this application.

[0027] Component designation explanation

[0028] 1 Battery compartment

[0029] 11 First Subject

[0030] 111 First Chamber

[0031] 112 First Card Slot

[0032] 12 First connecting part

[0033] 13. Cover

[0034] 131 Second connecting part

[0035] 132 First protrusion

[0036] 14 Torsion Spring Hinge

[0037] 2. Parts Warehouse

[0038] 21 Second Subject

[0039] 211 Second Chamber

[0040] 212 First Opening

[0041] 213 First Through-Gate

[0042] 214 Concave-convex structure

[0043] 215 columnar protrusions

[0044] 22. Top plate

[0045] 3. Outer shell

[0046] 31 Second Through-Gate

[0047] 32 Second opening

[0048] 33 Third Through-Gate

[0049] 34 First clearance slot

[0050] 35 Second clearance slot

[0051] 36 Ears Detailed Implementation

[0052] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0053] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0056] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the invention.

[0057] like Figure 1-10As shown, this utility model provides a portable power bank with a quickly replaceable battery, including: a battery compartment 1, the battery compartment 1 including a first body 11, a cover 13, a torsion spring hinge 14, a first connecting part 12, and a second connecting part 131; the first body 11 has a cubic structure, and its interior has a plurality of first chambers 111 extending through the upper and lower end faces of the first body 11 along the vertical direction; the first connecting part 12 is fixed to the outer surface of the side wall of the first body 11, and the upper end face of the first connecting part 12 is flush with the upper end face of the first body 11; the second connecting part 131 is disposed on the cover 13; the position of the second connecting part 131 corresponds to the first connecting part 12, and the two are connected by a torsion spring hinge. 14 are interconnected to realize the folding and opening of the first main body 11 and the cover 13 relative to the torsion spring hinge 14; the lower end face of the cover 13 is provided with an upper electrode plate corresponding to the working battery, and the upper electrode plate abuts against the upper end of the working battery when the cover 13 is in the closed state; a plurality of working batteries are respectively housed in the corresponding first chamber 111; accessory compartment 2, the accessory compartment 2 is fixed below the battery compartment 1; the accessory compartment 2 is provided with a second chamber 211 inside; the front side wall of the accessory compartment 2 is provided with a first opening 212, the display device is embedded in the first opening 212, and together with the voltage reduction device is housed in the second chamber 211; the lower side wall of the accessory compartment 2 is provided with a first through groove 213 ( Figure 6 (Red box in the image); The upper surface of the accessory compartment 2 is provided with a lower electrode plate corresponding to the working battery. When the cover 13 is closed, one side of the lower electrode plate abuts against the lower end of the working battery, and the other side is electrically connected to the input end of the step-down device; The outer shell 3 covers and is fixed to the outside of the first main body 11 of the battery compartment 1 and the accessory compartment 2; The lower side wall of the outer shell 3 is provided with a second through groove 31 corresponding to the first through groove 213; A pair of ears 36 are symmetrically provided on the left and right sides of the outer shell 3, and a third through groove 33 is provided on each of the ears 36; A second opening 32 corresponding to the first opening 212 is provided on the front side wall of the outer shell 3; and a first clearance groove 34 for the torsion spring hinge 14 is provided on the rear side wall of the outer shell 3; The strap passes through the third through groove 33 and is wrapped around the outer periphery of the arm or leg, thereby fixing the power bank to the limb.

[0058] It should be understood that, compared with existing technologies, most existing power banks are integrally packaged battery modules, which must be fully recharged after being depleted to be used again. When worn directly on the arm or thigh via a strap, increasing the battery capacity to meet high power or long battery life often results in a significant increase in the size and weight of the device, which is not conducive to prolonged wear. This utility model, by setting several first chambers 111 extending vertically through the upper and lower end faces within the first main body 11, allows the working batteries to be accommodated one by one in an independent channel. The opening and closing is achieved quickly with the torque of the openable cover 13 and the torsion spring hinge 14. In use, the operator only needs to lift the cover 13, remove the depleted working battery, insert the spare battery into the first chamber 111, and then rotate the cover 13 to complete the battery clamping and electrical contact under the action of the torsion spring hinge 14. The entire replacement process does not require disassembling the outer shell 3 or loosening the strap. The device can always be fixed on the periphery of the limb, greatly reducing downtime and reducing the operational burden in outdoor scenarios. Compared to traditional power banks that require full recharging, this solution supports "replace as needed" and "replace while using". In high-frequency usage scenarios such as food delivery riders, express delivery, outdoor shooting, commuting or traveling, users only need to carry a few spare battery units to provide continuous power, avoiding being forced to stop using the device due to a complete power outage.

[0059] The display device (not shown) is located at the first opening 212 on the front side of the accessory compartment 2, and is housed together with the step-down device (not shown) in the second chamber 211. It is electrically connected to the upper and lower electrode plates of the battery and the detection port of the step-down device via wires, enabling real-time display of the remaining battery power, output power, or voltage / current status. Since the display device faces outwards and is located on the front side of the accessory compartment 2, the wearer can easily read the battery power information by raising their wrist or looking down, without needing to remove the outer casing 3 or open the cover 13, reducing the operational cost of checking the battery power and facilitating timely replacement when the battery is low. The shared placement of the display device and the step-down device in the second chamber 211 allows for centralized arrangement of electronic components related to control and power management. This shortens the path of the detection and control circuits, reduces wiring losses, and avoids stacking electronic components near the first chamber 111, which would encroach on battery storage space, thus improving the smoothness of battery insertion and removal.

[0060] Preferred, such as Figure 5 As shown, the torsion spring hinge 14 of this application includes a cylindrical helical torsion spring hinge 14 wound around the outer circumference of a rotating shaft. Each end of the torsion spring hinge 14 has a sheet-like connecting member, which is integrally stamped from a thin metal sheet and has through holes for positioning and fixing along the assembly direction. Correspondingly, as... Figure 1-2As shown, the first connecting part 12 is a block structure with a narrow slot, and the second connecting part 131 is a narrow slot extending forward along the normal direction of the rear end face on the rear end face of the cover 13. During assembly, the plate-like structures of the two plate-like connectors are respectively inserted into the narrow slot of the first connecting part 12 or the second connecting part 131 (which is itself a narrow slot), thereby achieving the connection and fixation of the first main body 11, the torsion spring hinge 14, and the cover 13. Alternatively, the first connecting part 12 is a block structure with a through slot (the through slot corresponds to the through hole of the plate-like connector corresponding to the first main body 11) (not shown), and the second connecting part 131 is the through slot on the cover 13 (the through slot corresponds to the through hole of the plate-like connector corresponding to the cover 13). During assembly, the through holes on the two sheet-like connectors are coaxially aligned with the through slots of the first connecting part 12 and the second connecting part 131, respectively. Bolts are then passed through the through slots and their corresponding through holes, and tightened with nuts, thus achieving the connection and fixation of the first main body 11, the torsion spring hinge 14, and the cover 13. Furthermore, the block structure of the first connecting part 12 has rolled edge slots (not shown) at both ends. The left and right ends of the sheet-like connectors can be inserted into these rolled edge slots, and then fixed by bolts connecting the through holes and the through slots. The aforementioned methods of fixing the first main body 11 and the cover 13 facilitate disassembly and maintenance. The torsion spring hinge 14 can be quickly replaced or the spring force adjusted on-site without increasing the volume burden on the cover 13 and the main body. Simultaneously, when the cover 13 is open, the torsion spring hinge 14 rotates to store energy, and when the cover 13 is closed, the torsion force of the torsion spring hinge 14 presses the upper electrode plate on the lower end face of the cover 13 downwards, forming a stable electrical connection with the upper terminal face of the working battery.

[0061] Preferred, such as Figure 1-2 As shown, the first body 11 includes two first chambers 111 for accommodating two working batteries.

[0062] Preferably, in another embodiment, the sheet-like connector is fixed to the first connecting portion 12 and the second connecting portion 131 by means of a pin and a retaining ring (not shown). Specifically, after the through hole of the sheet-like connector is coaxially aligned with the through groove of the first connecting portion 12 and the second connecting portion 131, a solid pin is inserted, and retaining rings (e.g., E-shaped retaining rings) are installed at both ends of the pin. This connection method uses a pin and retaining ring mating structure. Since its fixing mechanism relies on the simple insertion of the pin and the elastic snap-fit ​​of the retaining ring, it achieves quick assembly and disassembly without the need for thread tightening.

[0063] It should be understood that the structure of the torsion spring hinge 14 and its fixing method with the first / second connecting part 131 are not limited to the above embodiments. Any equivalent structure that enables the cover 13 to achieve elastic rotation relative to the first main body 11 around the same pivot and provides a pre-torsion reset function is within the protection scope of this utility model. The fixing methods include, but are not limited to, bolt locking with hole and groove fit, pin fitting with stop, riveting / rivet nut fixing, anti-rotation fit with irregular hole, independent hinge pin fitting with hanging hole fixing, and quick-release clamping / eccentric lock fixing, etc.

[0064] like Figure 6-8 As shown, in one embodiment of this application, the accessory compartment 2 includes a second body 21 and an upper plate 22. The top of the second body 21 is open, and a limiting structure is provided on the inner wall of the second body 21. The lower end face and side face of the upper plate 22 abut against the limiting structure and the inner side wall of the second body 21, respectively, and are detachably fixed to the second body 21.

[0065] The second main body 21 and the upper end plate 22 are set separately. The upper end plate 22 serves as a detachable top cover. During assembly, the operator can directly place the pressure reducing device, etc., into the second chamber 211 from above the second main body 21, and then close the upper end plate 22 and fix it to the second main body 21, avoiding the need to place it only through the first opening 212 on the front side wall. Figure 6-7 Operations are performed at the location indicated by the green frame in the middle, but the size of the first opening 212 limits the ease of operation. Preferably, the upper plate 22 has several ventilation holes to eliminate the airbag effect during assembly.

[0066] In one embodiment of this application, the inner surface of the rear sidewall of the accessory compartment 2 is provided with a concave-convex structure 214 to match the shape and structure of the pressure reducing device, thereby limiting the pressure reducing device.

[0067] In one embodiment of this application, a plurality of forward-extending columnar protrusions 215 are provided on the inner surface of the rear side wall of the accessory compartment 2 to limit the display device.

[0068] By setting a concave-convex limiting structure on the inner surface of the rear side wall of the parts compartment 2, matching the shape of the pressure-reducing device, the pressure-reducing device can achieve locking and positioning during assembly, forming multi-directional limiting in the front-back, left-right, and up-down directions. The operator only needs to push the pressure-reducing device in the predetermined direction; positioning is achieved through the geometric cooperation of the boss, shoulder, and positioning ribs, eliminating the need for repeated alignment and temporary support. This reduces the amount of fasteners and auxiliary materials such as screws and washers, shortens the assembly cycle, and improves the first-pass yield. During use, the concave-convex limiting structure provides support and limitation for the pressure-reducing device, effectively suppressing micro-slippage and movement caused by vibrations from wearing, running, and transportation, thereby improving long-term vibration resistance reliability.

[0069] In one embodiment of this application, an L-shaped first protrusion 132 extends below the front sidewall of the cover 13, and a first slot 112 is provided at a corresponding position above the front sidewall of the first body 11. When the cover 13 is in a closed state, the first protrusion 132 and the first slot 112 engage with each other to achieve locking between the cover 13 and the first body 11; a second clearance groove 35 is provided on the outer shell 3 to avoid the first slot 112.

[0070] When the cover 13 is closed to its final position, the first protrusion 132 and the first slot 112 engage with each other to form a stable mechanical lock. This lock is an additional fastening measure applied to the cover 13 and the first body 11 in addition to the restoring force provided by the torsion spring hinge 14, ensuring that the upper electrode plate is continuously and evenly pressed against the upper end face of the working battery, and together with the lower electrode plate on the upper end face of the accessory compartment 2, maintains close contact between the working battery and the upper and lower electrode plates. In this way, micro-openings and displacements under vibration and impact conditions can be effectively suppressed, avoiding contact resistance fluctuations and local heating caused by intermittent connection and ensuring long-term reliable electrical connection. Preferably, the first slot 112 is a curved groove, the first protrusion 132 is an L-shaped buckle structure, and the end of the L-shaped buckle is provided with a curved structure that matches the first slot 112.

[0071] In terms of user experience, when the cover 13 approaches the closed position, the first protrusion 132 smoothly engages with the first slot 112, producing a clear "click" sound, providing the user with an intuitive indication that the cover is in place. This is accompanied by a slight tactile feedback, facilitating quick confirmation that the cover is closed. This locking mechanism allows for one-handed operation without adding steps or time to battery replacement, thus not affecting battery replacement efficiency. When it needs to be opened, it can be released by pressing the release position or applying force in a predetermined direction, making operation equally simple. At the same time, the locking force after engagement is sufficient to resist external disturbances during daily wear, effectively preventing accidental opening due to clothing pulling, minor collisions, or vibrations, ensuring the stability and safety of the cover 13 during use.

[0072] In one embodiment of this application, the strap includes elastic Velcro.

[0073] It should be understood that when the strap is an elastic Velcro, after the strap passes through the third through-slot 33 of the two loops 36 and is worn around the limb, the repeated adhesion of the Velcro's surface and the napped surface allows for continuously adjustable circumferential tightening and quick one-handed opening and closing without relying on metal fasteners. The operator can complete the tightness adjustment and locking within seconds. Furthermore, the elastic webbing can compensate for dynamic changes in limb circumference (muscle contraction, breathing fluctuations, changes in clothing thickness, sweating slippage, etc.) in real time, maintaining a constant and not excessive circumferential tightening force, thereby reducing the relative displacement and bouncing of the equipment under vibration conditions such as running and cycling. In addition, the flexible contact interface can disperse pressure, reducing marks and discomfort, and reducing fatigue even after prolonged wear. Moreover, the elastic Velcro supports a high number of repeated opening and closing cycles, is washable, and has a long service life.

[0074] In one embodiment of this application, the type of battery includes a rechargeable lithium battery; wherein the rechargeable lithium battery includes an 18650 lithium battery.

[0075] Rechargeable lithium batteries enable power banks to achieve higher energy storage capacity within the same first chamber 111 volume, significantly reducing the size and weight of the power bank while maintaining power output, thus meeting the requirements for comfortable long-term wear. Preferably, the rechargeable lithium battery includes an 18650 lithium battery, which has dimensions of φ18mm*65mm, is lightweight, has high energy density, and exhibits good structural strength and durability under vibration caused by wear, making it less prone to bulging and deformation. This helps maintain the consistency of dimensional tolerances in the first chamber 111, thereby ensuring the stability of the contact between the working battery and the upper and lower electrode plates.

[0076] In one embodiment of this application, the outer shell 3 is made of elastic TPU material.

[0077] The outer shell 3 is supported by elastic TPU and covers the battery compartment 1 (first main body 11) and accessory compartment 2. This encasing structure forms a continuous external load-bearing shell, allowing the outer shell 3 to preferentially absorb and disperse impacts, vibrations, and strap tension from wearing and movement, while the interior (first main body 11 and accessory compartment 2) only bears the secondary load attenuated by the outer shell 3. This significantly reduces the stiffness and strength requirements of the walls of the first chamber 111 and the second chamber 211, thereby enhancing heat dissipation; it also reduces direct stress transmission to the battery cells, lower electrode plates, and power module solder joints, making contact resistance and solder joint fatigue more controllable during long-term use and improving service life. At the same time, since the earpiece 36 and the outer shell 3 are a single unit, the elasticity of the earpiece 36 can better adapt to the curvature of the arm or thigh, improving wearing comfort. Furthermore, the TPU outer shell 3 has a high coefficient of friction, and the strap does not need to be excessively tightened to obtain sufficient anti-slip force, significantly reducing pressure marks and discomfort from prolonged wear.

[0078] In one embodiment of this application, the battery compartment 1 and the accessory compartment 2 are made of PETG material.

[0079] Because PETG material has a low density and high impact toughness and good resistance to stress cracking, it can be used with thinner walls and a more streamlined structure while meeting stiffness requirements, thereby reducing the weight of the outer shell and improving heat dissipation.

[0080] In one embodiment of this application, a swing power generation module (not shown) and a voltage regulator (not shown) are further included, wherein the swing power generation module and the voltage regulator are housed within the second chamber 211; wherein the swing power generation module includes a cantilever beam, a counterweight, a magnet, and a coil, one end of the cantilever beam is fixed to the upper inner wall of the second chamber 211, and the other end is fixed to the counterweight and the magnet, the coil is fixedly disposed below the magnet and maintains a gap with the magnet; the output terminal of the swing power generation module is electrically connected to the input terminal of the voltage regulator, and the output terminal of the voltage regulator is electrically connected in parallel with the lower electrode plate.

[0081] When the wearer walks, runs, or cycles, the low-frequency acceleration generated by the power bank causes the cantilever beam to periodically oscillate the counterweight and magnet. The magnetic flux between the magnet and the coil changes accordingly, generating alternating current (AC) at the coil's ends according to the principle of electromagnetic induction. This AC current is rectified and regulated by a voltage regulator, converting it into stable direct current (DC) and connected in parallel to the lower electrode of the battery. Since electrical energy is introduced into the working battery's circuit, some of the load's power consumption is immediately compensated, thus directly reducing the net discharge of the working battery per unit time. As a result, under the same usage scenario, the effective battery life is extended, reducing the frequency of battery replacements. It also reduces the amount of spare battery carried, resulting in a smaller instantaneous wearing weight and volume, and a lower oscillation torque during exercise, improving wearing stability and comfort. Furthermore, the battery operates at a shallower depth of discharge and a lower equivalent discharge rate, slowing down the rate of cell aging and internal resistance increase, and reducing heat generation with a square relationship with the current, thereby improving temperature rise and extending battery life.

[0082] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0083] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A portable power bank with a quickly replaceable battery, characterized in that, include: The battery compartment (1) includes a first main body (11), a cover (13), a torsion spring hinge (14), a first connecting part (12), and a second connecting part (131). The first main body (11) has a cubic structure, and its interior has a plurality of first chambers (111) extending through the upper and lower end faces of the first main body (11) in a vertical direction. The first connecting part (12) is fixed to the outer surface of the side wall of the first main body (11), and the upper end face of the first connecting part (12) is flush with the first main body (11). The upper surface of the cover (11) is flush with the upper surface of the cover (12); the second connecting part (131) is disposed on the cover (13); the position of the second connecting part (131) corresponds to the first connecting part (12), and the two are connected to each other by a torsion spring hinge (14) to realize the folding and opening of the first main body (11) and the cover (13) relative to the torsion spring hinge (14); the lower surface of the cover (13) is provided with an upper electrode plate corresponding to the working battery, and when the cover (13) is in the closed state, the upper electrode plate abuts against the upper end of the working battery; Several working batteries are respectively housed in the corresponding first chamber (111); The accessory compartment (2) is fixed below the battery compartment (1); the accessory compartment (2) has a second chamber (211) inside; the front side wall of the accessory compartment (2) has a first opening (212), the display device is embedded in the first opening (212) and together with the step-down device is housed in the second chamber (211); the lower side wall of the accessory compartment (2) has a first through groove (213); the upper end face of the accessory compartment (2) has a lower electrode plate corresponding to the working battery, and when the cover (13) is closed, one side of the lower electrode plate abuts against the lower end of the working battery, and the other side is electrically connected to the input end of the step-down device; The outer shell (3) covers and is fixed to the outside of the first main body (11) of the battery compartment (1) and the accessory compartment (2); the lower side wall of the outer shell (3) is provided with a second through groove (31) corresponding to the first through groove (213); a pair of ears (36) are symmetrically provided on the left and right sides of the outer shell (3), and a third through groove (33) is provided on each of the ears (36); a second opening (32) corresponding to the first opening (212) is provided on the front side wall of the outer shell (3); and a first clearance groove (34) for the torsion spring hinge (14) is provided on the rear side wall of the outer shell (3). A strap passes through the third through groove (33) and is wrapped around the periphery of the arm or leg to fix the mobile power supply to the limb.

2. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, The accessory compartment (2) includes a second main body (21) and an upper end plate (22). The top of the second main body (21) is open. A limiting structure is provided on the inner wall of the second main body (21). The lower end face and the side face of the upper end plate (22) abut against the limiting structure and the inner side wall of the second main body (21) respectively, and are detachably fixed to the second main body (21).

3. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, The inner surface of the rear side wall of the accessory compartment (2) is provided with a concave-convex structure (214) to match the shape and structure of the pressure reducing device, thereby limiting the pressure reducing device.

4. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, The inner surface of the rear side wall of the accessory compartment (2) is provided with a plurality of columnar protrusions (215) extending forward, which are used to limit the display device.

5. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, An L-shaped first protrusion (132) extends below the front sidewall of the cover (13), and a first slot (112) is provided at the corresponding position above the front sidewall of the first body (11). When the cover (13) is in the closed state, the first protrusion (132) and the first slot (112) engage with each other to achieve locking between the cover (13) and the first body (11); a second clearance groove (35) is provided on the outer shell (3) to avoid the first slot (112).

6. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, The strap includes elastic Velcro.

7. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, The type of battery includes rechargeable lithium batteries; wherein, the rechargeable lithium batteries include 18650 lithium batteries.

8. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, The outer shell (3) is made of elastic TPU material.

9. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, The battery compartment (1) and accessory compartment (2) are made of PETG material.

10. A portable power bank with a quickly replaceable battery according to claim 1, characterized in that, It also includes a swing power generation module and a voltage regulator, which are housed in the second chamber (211). The swing power generation module includes a cantilever beam, a counterweight, a magnet, and a coil. One end of the cantilever beam is fixed to the upper inner wall of the second chamber (211), and the other end is fixed to the counterweight and the magnet. The coil is fixedly disposed below the magnet and maintains a gap with the magnet. The output end of the swing power generation module is electrically connected to the input end of the voltage regulator, and the output end of the voltage regulator is electrically connected in parallel with the lower electrode plate.

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