Power bank

Abstract

The utility model relates to the technical field of mobile power supplies, in particular to a power bank which comprises a columnar shell, a circuit board assembly, a winding disc and a columnar battery cell are sequentially arranged in the columnar shell in the axial direction, and the winding disc, the columnar battery cell and the columnar shell are coaxially arranged; a data line fixing groove is formed in the side portion of the columnar shell in the circumferential direction, and a cable access hole is formed in one side of the data line fixing groove; according to the utility model, the internal structural layout of the power bank is optimized through the layout mode of the columnar shell, the axial layering and the coaxial structure, and the space utilization rate is improved. According to the design, a larger mounting space is provided for the battery cell, the capacity of the battery cell is favorably improved, and the cruising ability of a product is further enhanced; meanwhile, the winding disc is arranged between the circuit board assembly and the battery cell, the physical heat insulation effect is achieved, the heat influence on the circuit board assembly when the battery cell works is reduced, the stability of a circuit system is guaranteed, and the use safety of a product is improved.

Description

Technical Field

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

[0002] With the increasing popularity and enhanced functionality of mobile electronic devices, users' demand for portable power banks is growing, making them an indispensable electronic product in daily life. Currently, most portable power banks on the market typically include a casing, battery cells, circuit board assembly, and a data cable for connecting external devices. Traditional data cables are mostly external, separate designs that require separate storage, involve frequent plugging and unplugging, and are inconvenient to carry and prone to loss.

[0003] To address this, some manufacturers have integrated data cable storage devices into their power banks. For example, a power bank disclosed in the utility model patent with authorization announcement number CN221669597U uses an internal reel to recycle the data cable, thereby improving ease of use.

[0004] While the aforementioned technical solution addresses the data cable management issue to some extent, it still has some shortcomings. For example, the horizontal arrangement of the reel occupies a significant portion of the power bank's internal space, limiting the battery capacity and impacting the product's battery life. Furthermore, the layout between the reel, battery cells, and circuit board components lacks proper planning, making the circuit board components highly susceptible to the heat generated by the battery cells, potentially leading to overheating and affecting circuit stability and product safety. Utility Model Content

[0005] In view of this, this utility model proposes a power bank that optimizes the internal structural layout of the power bank through a "cylindrical shell + axial layering + coaxial structure" layout, thereby improving space utilization. This design not only provides more installation space for the battery cells, which is conducive to increasing the capacity of the battery cells and thus enhancing the product's battery life, but also, the winding reel placed between the circuit board assembly and the battery cells plays a role in physical heat insulation, reducing the thermal impact of the battery cells on the circuit board assembly during operation, ensuring the stability of the circuit system, and improving the safety of product use. This solves the problems of limited battery cell capacity and unstable performance of the circuit board assembly due to the heat from the battery cells in existing power banks.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides a power bank, including a cylindrical outer shell. Inside the cylindrical outer shell, a circuit board assembly, a winding reel, and a cylindrical battery cell are sequentially arranged along the axial direction.

[0008] The winding reel, the cylindrical battery cell, and the cylindrical housing are coaxially arranged, and the winding reel is used for winding the data cable.

[0009] A data cable fixing groove is provided circumferentially on the side of the columnar housing and at the position corresponding to the winding reel, and a cable inlet / outlet hole is provided on one side of the data cable fixing groove.

[0010] One end of the data cable is wound inside the reel, and the other end extends through the cable inlet / outlet hole to the outside of the cylindrical housing and can be detachably snapped into the data cable fixing slot.

[0011] Based on the above technical solutions, preferably, the end of the data cable fixing groove away from the cable inlet / outlet hole is open.

[0012] Based on the above technical solutions, preferably, the outer surface of the free end of the data cable elastically abuts against the wall of the data cable fixing groove.

[0013] Based on the above technical solution, preferably, a limiting ring is fitted onto one end of the data cable located outside the cylindrical outer shell, wherein,

[0014] The inner ring surface of the limiting ring elastically abuts against the outer surface of the data line;

[0015] The outer diameter of the limiting ring is larger than the inner diameter of the cable inlet / outlet hole and smaller than the slot width of the data cable fixing groove.

[0016] Based on the above technical solutions, preferably, the outer surface of the limiting ring is provided with anti-slip texture.

[0017] Based on the above technical solutions, preferably, the opening of the cable inlet / outlet hole is a flared opening.

[0018] Based on the above technical solution, preferably, the interior of the cylindrical shell is provided with two clamping plates spaced apart along the axial direction, wherein,

[0019] The take-up reel is held between the two clamps.

[0020] Based on the above technical solutions, preferably, the cylindrical outer shell is cylindrical.

[0021] Based on the above technical solutions, preferably, the columnar outer shell is prismatic in shape, wherein,

[0022] The corners on the sides of the prism are rounded.

[0023] Based on the above technical solutions, preferably, a heat-insulating coating is provided on the surface of the winding reel near the end of the cylindrical battery cell.

[0024] The power bank of this utility model has the following advantages over the prior art:

[0025] (1) By sequentially arranging the circuit board assembly, winding reel, and cylindrical battery cell along the axial direction inside the cylindrical housing, and coaxially positioning the winding reel, cylindrical battery cell, and cylindrical housing, a rational layout of the internal structure of the power bank is achieved, significantly improving space utilization. Simultaneously, this structure facilitates the expansion of the battery cell volume, thereby increasing the overall capacity and battery life. Furthermore, placing the winding reel between the circuit board assembly and the cylindrical battery cell enables physical isolation between the cylindrical battery cell and the circuit board assembly, effectively isolating the heat from the cylindrical battery cell from the circuit board assembly, enhancing circuit stability, and improving product safety and reliability.

[0026] (2) By applying a heat-insulating coating to the surface of the winding reel near the cylindrical cell, the thermal isolation performance can be further enhanced, making the circuit more stable and the overall product safer.

[0027] (3) By setting the cylindrical shell, it not only conforms to the ergonomic principle and is easy to hold, but also makes it easier to stand on the table compared to the traditional flat power bank, saving table space and improving the convenience of use and the aesthetics of placement.

[0028] (4) By setting the end of the data cable fixing slot away from the cable inlet and outlet hole to be an open structure, the user can more easily take out the data cable after use, which improves the convenience of operation; at the same time, this structure also helps to prevent the data cable from getting stuck or difficult to pull out, further enhancing the user experience.

[0029] (5) By setting a limit ring, the data cable can be prevented from being pulled excessively during the winding process, avoiding damage to the interface, which helps to extend the service life of the data cable and improve the durability and reliability of the product. Attached Figure Description

[0030] 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.

[0031] Figure 1 This is a perspective view of a power bank according to the present invention;

[0032] Figure 2 for Figure 1 A three-dimensional image;

[0033] Figure 3 for Figure 1 A partial exploded view;

[0034] Figure 4 This is a structural diagram of the clamping plate section;

[0035] In the diagram: 1. Cylindrical outer shell; 2. Circuit board assembly; 3. Rewind reel; 4. Cylindrical battery cell; 5. Data cable; 11. Clamping plate; 51. Limiting ring; 101. Data cable fixing groove; 102. Cable entry / exit hole. Detailed Implementation

[0036] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] like Figure 1-4 As shown, a power bank of this utility model includes a cylindrical shell 1, and a circuit board assembly 2, a winding reel 3 and a cylindrical battery cell 4 are arranged sequentially along the axial direction inside the cylindrical shell 1.

[0038] The winding reel 3, the cylindrical battery cell 4, and the cylindrical housing 1 are coaxially arranged, and the winding reel 3 is used to wind up the data cable 5. A data cable fixing groove 101 is provided circumferentially on the side of the cylindrical housing 1 at the position corresponding to the winding reel 3. A cable inlet / outlet hole 102 is provided on one side of the data cable fixing groove 101. One end of the data cable 5 is wound inside the winding reel 3, and the other end extends to the outside of the cylindrical housing 1 through the cable inlet / outlet hole 102 and can be detachably snapped into the data cable fixing groove 101.

[0039] Through the above structure, the winding reel 3 is placed on its side, that is, the winding axis of the winding reel 3 is collinear with the central axis of the cylindrical battery cell 4. This reduces the distance between the cylindrical battery cell 4 and the circuit board assembly 2, realizes a rational layout of the internal structure of the power bank, and significantly improves the space utilization rate. At the same time, this structure also facilitates the expansion of the battery cell volume, thereby improving the overall capacity and battery life. That is, two cylindrical shells 1 with the same volume reduce the distance between the cylindrical battery cell 4 and the circuit board assembly 2, making it easier to obtain a larger space to accommodate the cylindrical battery cell 4.

[0040] In addition, placing the reel 3 between the circuit board assembly 2 and the cylindrical battery cell 4 can achieve physical isolation between the cylindrical battery cell 4 and the circuit board assembly 2, effectively isolating the heat of the cylindrical battery cell 4 from the cylindrical battery cell 4, enhancing the stability of the circuit, and improving the safety and reliability of the product.

[0041] Furthermore, a heat-insulating coating, such as a ceramic material, is applied to the surface of the reel 3 near the end of the cylindrical battery cell 4. This enhances thermal insulation performance, improving circuit stability and overall product safety.

[0042] In the above structure, the cylindrical outer shell 1 is cylindrical or prismatic. When it is prismatic, the corners on the sides of the prismatic shell are rounded. The cylindrical design not only conforms to ergonomic principles and is easy to hold, but also makes it easier to stand upright on a table compared to traditional flat power banks, saving table space and improving ease of use and aesthetics.

[0043] In the above structure, the end of the data cable fixing groove 101 away from the cable inlet / outlet hole 102 is open, that is, the end of the data cable fixing groove 101 away from the cable inlet / outlet hole 102 extends outward along the tangential direction of the cylindrical outer shell 1 in an open state, such as... Figure 1 As shown, this structure allows users to more easily remove the data cable 5 after use, improving operational convenience. At the same time, this structure also helps prevent the data cable from getting stuck or difficult to unplug, further enhancing the user experience.

[0044] In the above structure, the outer surface of the free end of the data cable 5 elastically abuts against the wall of the data cable fixing groove 101. Specifically, the outer sheath of the data cable 5 is elastic. When fixing the data cable, the free end of the data cable 5 is inserted into the data cable fixing groove 101, and the elasticity of the outer sheath achieves the snap-fit ​​fixing of the free end of the data cable 5.

[0045] In the above structure, a limiting ring 51 is fitted onto one end of the data cable 5 located outside the cylindrical outer casing 1, such as... Figure 2 As shown, the inner ring surface of the limiting ring 51 elastically abuts against the outer surface of the data cable 5; the limiting ring 51 prevents the data cable 5 from being excessively stretched during the winding process, avoids damage to the interface, helps extend the service life of the data cable 5, and improves the durability and reliability of the product.

[0046] In addition, such as Figure 2 As shown, the outer diameter of the limiting ring 51 is larger than the inner diameter of the cable inlet / outlet hole 102 and smaller than the slot width of the data cable fixing groove 101, so that the limiting ring 51 can smoothly enter and exit the data cable fixing groove 101 without getting stuck in the cable inlet / outlet hole 102, thus improving the convenience of use.

[0047] In addition, the inner ring surface of the limiting ring 51 elastically abuts against the outer surface of the data cable 5, which is also achieved by utilizing the elasticity of the outer sheath of the data cable 5. Based on this, the position of the limiting ring 51 is adjustable. When the data cable 5 is pulled out, an external force can be applied to the limiting ring 51 to make it slide to the vicinity of the cable inlet / outlet hole 102, which is used to constrain the pulling length of the data cable 5 and make the data cable 5 less likely to retract automatically.

[0048] In this structure, the outer surface of the limiting ring 51 is provided with anti-slip texture to facilitate the adjustment of the usage position of the data cable 5.

[0049] The cable inlet / outlet hole 102 has a flared opening, which makes it less likely to cut the outer sheath of the data cable 5 and improves the service life of the data cable 5.

[0050] In the above structure, two clamping plates 11 are axially spaced inside the cylindrical outer shell 1, wherein, as shown... Figure 3 and Figure 4 As shown, the winding reel 3 is clamped between two clamping plates 11. This structure facilitates the installation and positioning of the winding reel 3 and makes assembly easier.

[0051] It should be noted that the winding reel 3 can adopt any existing cable reel structure capable of automatic winding. For example, a winding structure disclosed in the utility model patent application CN221669597U, or a cable reel disclosed in patent application CN2701118Y, uses a spiral spring to provide winding power, causing the cable to wind into the inside of the reel. The specific structure and working principle of such winding reels are well known to those skilled in the art, and therefore will not be described in detail here.

[0052] In addition, the free end of data cable 5 refers to the interface end of the data cable.

[0053] The method of using the power bank according to this utility model is as follows:

[0054] When in use, insert your finger into the data cable fixing groove 101 and pry the free end of the data cable 5 with a little force to move it out of the data cable fixing groove 101. Then pull the data cable 5 out to a suitable length. At this time, the limiting ring 51 can be slid to the cable inlet / outlet hole 102 to limit the cable retraction.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power bank, comprising a cylindrical outer shell (1), characterized in that: The cylindrical outer shell (1) contains, axially, a circuit board assembly (2), a winding reel (3), and a cylindrical battery cell (4), wherein, The winding reel (3), the cylindrical battery cell (4), and the cylindrical outer shell (1) are coaxially arranged, and the winding reel (3) is used for winding the data cable (5); A data cable fixing groove (101) is provided circumferentially on the side of the columnar outer shell (1) and at the position corresponding to the winding reel (3). A cable inlet / outlet hole (102) is provided on one side of the data cable fixing groove (101). One end of the data cable (5) is wound inside the winding reel (3), and the other end extends through the cable inlet / outlet hole (102) to the outside of the cylindrical housing (1) and can be detachably snapped into the data cable fixing groove (101).

2. The power bank as described in claim 1, characterized in that: The data cable fixing groove (101) is open at one end away from the cable inlet / outlet hole (102).

3. A power bank as described in claim 1, characterized in that: The outer surface of the free end of the data cable (5) elastically abuts against the groove wall of the data cable fixing groove (101).

4. A power bank as described in claim 1, characterized in that: A limiting ring (51) is fitted onto one end of the data cable (5) located outside the cylindrical outer shell (1), wherein, The inner ring surface of the limiting ring (51) elastically abuts against the outer surface of the data line (5); The outer diameter of the limiting ring (51) is larger than the inner diameter of the cable inlet / outlet hole (102) and smaller than the slot width of the data cable fixing groove (101).

5. A power bank as described in claim 4, characterized in that: The outer surface of the limiting ring (51) is provided with anti-slip texture.

6. A power bank as described in claim 1, characterized in that: The opening of the cable inlet / outlet hole (102) is a flared opening.

7. A power bank as described in claim 1, characterized in that: The cylindrical outer shell (1) has two clamping plates (11) spaced axially inside, wherein, The winding reel (3) is held between the two clamping plates (11).

8. A power bank as described in claim 1, characterized in that: The cylindrical outer shell (1) is cylindrical.

9. A power bank as described in claim 1, characterized in that: The columnar outer shell (1) is prismatic in shape, wherein, The corners on the sides of the prism are rounded.

10. A power bank as described in claim 1, characterized in that: A heat-insulating coating is provided on the surface of the winding reel (3) near the end of the cylindrical cell (4).

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