energy storage device

Abstract

The application discloses an energy storage device, which comprises a shell, a main plate and a connecting line, the shell is provided with a window; the main plate is arranged in the shell; the connecting line comprises a telescopic wire bundle and a plug, the telescopic wire bundle is in a spring shape, the telescopic wire bundle is located in the shell, one end of the telescopic wire bundle is electrically connected with the main plate, the other end of the telescopic wire bundle is connected with the plug, and the connecting line is configured to stretch the telescopic wire bundle, and the plug and at least part of the telescopic wire bundle are drawn out of the window. The energy storage device provided by the application has the advantages that the main body of the connecting line is arranged in the form of the spring-shaped telescopic wire bundle, the connecting line can be tightly rolled in the shell when being stored, the space occupation of the connecting line is reduced, the miniaturization of the energy storage device is facilitated, the spring-shaped telescopic wire bundle can effectively avoid the winding problem of the wire, and the drawing and recovery of the connecting line are facilitated.

Description

Technical Field

[0001] This application relates to the field of portable energy storage technology, and more specifically, to an energy storage device. Background Technology

[0002] As a key component connecting mains power and energy storage devices, the cable's storage and user experience directly impact the product's practicality. In related technologies, energy storage device cables are often presented as accessories, requiring additional winding or bundling for storage, which not only takes up space but also easily leads to tangling and knotting. Some cables using ordinary telescopic structures suffer from high telescopic resistance and unsmooth rebound, affecting the user experience. Utility Model Content

[0003] This application provides an energy storage device to solve at least one of the above-mentioned technical problems.

[0004] The energy storage device according to the embodiments of this application includes:

[0005] A housing, wherein a window is provided on the housing;

[0006] A connecting line, comprising a retractable harness and a plug, is configured to connect the energy storage device to an external electrical source via the plug. The connecting line is also configured such that, in a naturally retracted state, the retractable harness is located within the housing, and the plug is at least partially exposed from the opening, allowing the retractable harness to be stretched by operating the plug, thereby allowing the plug to be pulled away from the housing.

[0007] The energy storage device proposed in this application, by setting the main body of the connecting wire as a spring-shaped telescopic wire harness, can be tightly rolled into the housing when stored, which helps to reduce the space occupied by the connecting wire and facilitates the miniaturization of the energy storage device. At the same time, the spring-shaped telescopic wire harness can effectively avoid the problem of wire tangling and facilitate the extraction and recycling of the connecting wire.

[0008] In some embodiments, the cross-section of the opening and the plug are circular with substantially the same diameter, and the plug is configured such that when the connecting wire is housed in the housing, the plug is embedded in the opening and seals the opening.

[0009] In this way, by setting the cross-sections of the window and the plug to be circles with approximately the same diameter, and by embedding the plug into the window to seal it, the internal structure of the housing is sealed and protected. This helps prevent foreign objects such as dust and liquids from entering the housing through the window, thereby improving the protective performance and reliability of the energy storage device.

[0010] In some embodiments, the energy storage device further includes a cable tray installed inside the housing, the cable tray communicating with the window, and the telescopic cable harness disposed within the cable tray.

[0011] In this way, by setting a wire groove inside the housing that communicates with the window and placing the telescopic wire harness inside the wire groove, the telescopic wire harness is properly limited, which helps to prevent the telescopic wire harness from swinging randomly or getting tangled in other parts inside the housing, facilitates the rapid stretching and storage of the telescopic wire harness, and improves the neatness of the internal structure of the equipment.

[0012] In some embodiments, the groove inlet and the window are circular with substantially the same diameter.

[0013] In this way, by setting the inlet of the cable tray and the opening to be circles with the same diameter, the shape matching of the inlet of the cable tray and the opening is achieved, which is conducive to the smooth passage of plugs or telescopic harnesses during the stretching / storage process, reducing frictional resistance, and further optimizing the sealing effect.

[0014] In some embodiments, the cable tray includes a first segment and a second segment, the second segment being connected to the first segment and the first segment being connected to the housing. The plug is configured such that when the connecting wire is retracted into the housing, the retractable cable harness is retracted into the second segment and the plug is retracted into the first segment.

[0015] In this way, by setting the cable tray to include a first section and a second section, and with the telescopic cable harness located in the second section and the plug located in the first section when stored, the plug and telescopic cable harness can be stored in sections. This helps to avoid mutual interference between the telescopic cable harness and the plug, ensuring that both are completely stored in the housing. At the same time, it optimizes the space utilization of the cable tray and improves storage stability.

[0016] In some embodiments, the second segment and the first segment are cylindrical stepped grooves, the diameter of the first segment is larger than the diameter of the second segment, and the diameter of the first segment is substantially equal to the diameter of the plug cross-section.

[0017] In this way, by setting the first and second sections of the cable tray as cylindrical stepped grooves, the shape of the cable tray matches that of the plug and the telescopic cable harness, which helps to reduce the volume occupied after storage, while preventing the telescopic cable harness from moving or loosening during storage, thus improving storage reliability and structural compactness.

[0018] In some embodiments, the energy storage device further includes a first fixing member and a second fixing member that are mated together, the first fixing member being disposed on the housing and the second fixing member being disposed on the plug.

[0019] In this way, by setting up a first fixing part and a second fixing part that cooperate to connect, the plug is fixed, which helps to prevent the plug from being accidentally pulled out due to misoperation or external force, avoids unnecessary stretching of the telescopic harness, and improves the stability and safety of equipment use.

[0020] In some embodiments, the first fixing member and the second fixing member are magnetic suction members that cooperate with each other.

[0021] In this way, by setting the first and second fixing parts as mutually cooperating magnetic components, the plug can be quickly fixed and unlocked, which is conducive to users fixing or releasing the plug with one hand, improving the convenience of use and operating efficiency.

[0022] In some embodiments, the plug includes a body and pins, the pins being electrically connected to the retractable cable harness, the pins being rotatably disposed on the body, and the pins being configured such that when the pins are rotated from a first position to a second position, the pins rotate from inside the body to outside the body.

[0023] In this way, by rotating the prongs onto the plug body, and allowing the prongs to rotate from inside the body to outside the body, the prongs can be folded and stored. This helps protect the prongs when not in use, preventing damage from collisions, while also reducing the overall size of the plug, making it easier to carry and store the device.

[0024] In some embodiments, the plug includes a body and a pull ring, the pull ring being rotatably disposed on the body, and the pull ring being configured such that when the pull ring is rotated from a third position to a fourth position, the pull ring rotates from inside the body to outside the body.

[0025] In this way, by rotating the pull ring onto the plug body and allowing it to rotate from inside the body to outside, a hidden design is achieved. This helps to avoid the pull ring taking up extra space when not in use, while allowing the retractable cable harness to be quickly stretched by pulling out the pull ring when in use, thus improving the convenience and user experience.

[0026] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0028] Figure 1 This is a schematic diagram of the internal structure of the energy storage device according to an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the energy storage device according to an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the connection lines of the energy storage device according to an embodiment of this application;

[0031] Figure 4 This is a partial structural schematic diagram of the energy storage device according to an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the connection lines of the energy storage device according to an embodiment of this application;

[0033] Figure 6 This is a partial structural schematic diagram of the energy storage device according to an embodiment of this application.

[0034] Explanation of main component symbols: Energy storage device 100, housing 10, first housing 11, second housing 12, window 13, main board 20, connecting wire 30, telescopic wire harness 31, plug 32, main body 321, hidden groove 3211, storage groove 3212, pin 322, pull ring 323, wire groove 40, first section 41, second section 42, first fixing part 51, second fixing part 52. Detailed Implementation

[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] This disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described herein. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] As a key component connecting mains power and energy storage devices, the cable's storage and user experience directly impact the product's practicality. In related technologies, energy storage device cables are often presented as accessories, requiring additional winding or bundling for storage, which not only takes up space but also easily leads to tangling and knotting. Some cables using ordinary telescopic structures suffer from high telescopic resistance and unsmooth rebound, affecting the user experience.

[0040] Please see Figure 1The energy storage device 100 of this application embodiment includes a housing 10 and a connecting line 30. The housing 10 is provided with a window 13. The connecting line 30 includes a telescopic harness 31 and a plug 32, and is configured to connect the energy storage device 100 to an external power source through the plug 32. The connecting line 30 is also configured such that when the telescopic harness 31 is in a naturally retracted state, the telescopic harness 31 is located inside the housing 10, and the plug 32 is at least partially exposed from the window 13, so as to allow the telescopic harness 31 to be stretched by operating the plug 32, thereby allowing the plug 32 to be pulled away from the housing 10.

[0041] The energy storage device 100 proposed in this application sets the main body 321 of the connecting wire 30 into a spring-shaped telescopic wire harness 31, which allows it to be tightly coiled inside the housing 10 when stored. This helps to reduce the space occupied by the connecting wire 30 and facilitates the miniaturization of the energy storage device 100. At the same time, the spring-shaped telescopic wire harness 31 can effectively avoid the problem of wire tangling and facilitate the extraction and recycling of the connecting wire 30.

[0042] In this embodiment, the housing 10 can be manufactured by injection molding. Specifically, the housing 10 can be divided into a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 can be manufactured by injection molding respectively and connected by fasteners.

[0043] In this embodiment, a motherboard 20 is provided inside the housing 10; a telescopic cable harness 31 is located inside the housing 10, one end of the telescopic cable harness 31 is electrically connected to the motherboard 20, and the other end of the telescopic cable harness 31 is connected to a plug 32.

[0044] In this embodiment, the retractable cable harness 31 adopts a helical spring-like layout. The cable is made of thermoplastic elastomer (TPE) material and formed into a continuous helical structure through injection molding. One end of the retractable cable harness 31 is connected to the main board 20 by welding, and the other end is electrically connected to the plug 32 by crimping. For example, in its natural state, the retractable cable harness 31 is a tightly wound cylinder that automatically retracts due to its own elasticity. When the user stretches it, the retractable cable harness 31 extends along the spring axis and quickly retracts into the housing 10 after release, effectively avoiding the problem of cable tangling.

[0045] In some embodiments, the surface of the telescopic harness 31 is provided with a nylon braided layer to improve abrasion resistance and tensile strength, while maintaining the flexibility of the wire and ensuring that it does not deform under repeated stretching.

[0046] In some embodiments, the opening 13 may be located on the side of the housing 10 near the bottom. The position of the opening 13 should ensure that the plug 32 is directly facing the opening 13 when it is in the retracted state. In this way, when the plug 32 is released after use, the telescopic harness 31 can automatically retract into the cavity of the housing 10 due to the elasticity of the material. This avoids damage to the housing 10 caused by the plug 32 hitting the housing 10 when the telescopic harness 31 automatically retracts.

[0047] In some embodiments, the elasticity of the retractable cable harness 31 should not be too large. On the one hand, excessive elasticity will require the user to exert a lot of force when stretching the retractable cable harness 31, causing inconvenience. On the other hand, if the elasticity of the retractable cable harness 31 is too large, the impact force of the plug 32 on the housing 10 when the retractable cable harness 31 automatically retracts will also be very large. Setting a smaller elasticity of the retractable cable harness 31 can further avoid damage to the housing 10.

[0048] In some embodiments, the telescopic harness 31 may also be configured as a flat spiral shape to reduce radial space occupation while maintaining telescopicity.

[0049] In some embodiments, the surface of the retractable harness 31 may also be coated with a waterproof and corrosion-resistant coating, thereby effectively extending its lifespan when used in coastal areas with high salt spray.

[0050] Please see Figure 1 and Figure 2 In some embodiments, the cross-sections of the window 13 and the plug 32 are circular with substantially the same diameter. The plug 32 is configured such that when the connecting wire 30 is housed inside the housing 10, the plug 32 is embedded in the window 13 and seals the window 13.

[0051] Thus, by setting the cross-sections of the window 13 and the plug 32 to be circles with essentially the same diameter, and by embedding the plug 32 into the window 13 to seal the window 13, the internal structure of the housing 10 is sealed and protected. This helps prevent foreign objects such as dust and liquid from entering the housing 10 through the window 13, thereby improving the protective performance and reliability of the energy storage device 100.

[0052] Specifically, the window 13 and the plug 32 both have circular cross sections. In some embodiments, the outer shell of the plug 32 can be made of rigid PC injection molding. The outer peripheral wall of the plug 32 can be integrally formed with three annular sealing ribs. The cross section of the ribs is semi-circular. When the plug 32 is inserted into the window 13, the ribs are slightly compressed by the edge of the window of the shell 10, generating a uniform rebound force to achieve multi-line contact sealing.

[0053] In some embodiments, an additional elastic silicone sealing cap may be provided. The silicone sealing cap can be fitted over the plug 32, forming an interference fit with the opening 13. A seal is formed by compressing the silicone sealing cap. For example, the opening 13 has a diameter of 22mm, the plug 32 has a cross-sectional diameter of 21.8mm, and the silicone sealing cap is 1mm thick. This ensures both smooth insertion and reliable sealing, effectively preventing dust and liquid from entering the housing 10. Furthermore, the inner wall of the silicone sealing cap has grooves corresponding to the raised ribs to prevent the silicone sealing cap from falling off the socket.

[0054] In some embodiments, a rotating locking mechanism can be added to the root of the plug 32 to enhance the sealing performance. Specifically, an external thread can be added to the root of the plug 32, and an internal thread matching the external thread at the root of the plug 32 can be provided inside the window 13. When the plug 32 is placed inside the window 13, it can be connected by the thread to improve the sealing performance.

[0055] Please see Figure 1 In some embodiments, the energy storage device 100 further includes a cable tray 40, which is installed inside the housing 10 and communicates with the window 13. A telescopic cable harness 31 is disposed inside the cable tray 40.

[0056] Thus, by setting a wire groove 40 that communicates with the window 13 inside the housing 10 and placing the telescopic wire harness 31 inside the wire groove 40, the telescopic wire harness 31 is properly limited, which helps to prevent the telescopic wire harness 31 from swinging randomly or getting tangled in other parts inside the housing 10, facilitates the rapid stretching and storage of the telescopic wire harness 31, and improves the neatness of the internal structure of the equipment.

[0057] Specifically, in this embodiment, the wire trough 40 and the housing 10 can be an integrally injection-molded structure. In some embodiments, the wire trough 40 and the housing 10 can also be formed separately and fixedly connected by fasteners. The telescopic wire harness 31 passes through the bottom of the wire trough 40 and is electrically connected to the motherboard 20. For example, the wire trough 40 can be an integrally injection-molded ABS tube with the same wall thickness as the housing 10 to facilitate injection molding. When the telescopic wire harness 31 is fully retracted, an annular buffer space is reserved at the bottom of the wire trough 40, and the end of the telescopic wire harness 31 can naturally rebound and stay in this space, avoiding repeated impacts between the end of the telescopic wire harness 31 and the solder joints of the motherboard 20, thus improving the life of the solder joints.

[0058] In some embodiments, a Teflon coating may be uniformly applied to the inner wall of the wire groove 40. The low coefficient of friction of Teflon allows the spring-shaped telescopic wire harness 31 to move smoothly and without obstruction when stretched or retracted, reducing surface wear of the telescopic wire harness 31.

[0059] In some embodiments, a wire clip can be provided at the bottom of the wire channel 40 to fix the telescopic wire harness 31. Specifically, the end of the telescopic wire harness 31 near the motherboard 20 is fixed to the bottom of the wire channel 40 by the wire clip. When the telescopic wire harness 31 is stretched, the wire clip can fix the telescopic wire harness 31 to prevent the tension from being transmitted to the connection between the telescopic wire harness 31 and the motherboard 20, and avoid the connection between the telescopic wire harness 31 and the motherboard 20 being subjected to excessive tension and causing it to break.

[0060] In this embodiment, the wire groove 40 can run along the inner wall of the housing 10 to avoid interference with the motherboard 20 or other components. For example, the width of the wire groove 40 matches the diameter of the telescopic wire harness 31 after it is retracted, and a 45° chamfer is provided at the entrance of the wire groove 40 to reduce the frictional resistance when the telescopic wire harness 31 is stretched.

[0061] In some embodiments, the cable tray 40 and the window 13 are connected by an arc transition to ensure that the plug 32 or the telescopic cable harness 31 does not get stuck during the stretching / retraction process.

[0062] In some embodiments, the inlet of the trough 40 and the opening 13 are circular with substantially the same diameter.

[0063] Thus, by setting the inlet of the wire groove 40 and the opening 13 to be circular with the same diameter, the shape matching of the inlet of the wire groove 40 and the opening 13 is achieved, which is conducive to the smooth passage of the plug 32 or the telescopic wire harness 31 during the stretching / storage process, reducing frictional resistance, and further optimizing the sealing effect.

[0064] Specifically, the inlet of the cable tray 40 and the circular cross-section of the window 13 are arranged concentrically. When the plug 32 is fully inserted, the outer wall of the housing 10 is flush with the end face of the plug 32, improving the overall aesthetics of the product. For example, the inlet of the cable tray 40 and the diameter of the window 13 are exactly the same, and the outer surface of the plug 32 and the inner surface of the window 13 can be coated with polytetrafluoroethylene to reduce the coefficient of friction, allowing users to easily pull out and retract the retractable cable harness 31.

[0065] In other embodiments, the inlet of the wire groove 40 and the window 13 can also be configured in other shapes, such as rectangle, ellipse, regular hexagon, etc. Furthermore, the cross-sectional shape of the plug 32 is the same as that of the inlet of the wire groove 40 and the window 13, and the size is basically the same.

[0066] Please see Figure 1 In some embodiments, the cable tray 40 includes a first segment 41 and a second segment 42, the second segment 42 being connected to the first segment 41, the first segment 41 being connected to the housing 10, and the plug 32 being configured such that when the connecting wire 30 is retracted into the housing 10, the telescopic cable harness 31 is retracted into the second segment 42, and the plug 32 is retracted into the first segment 41.

[0067] Thus, by setting the cable tray 40 to include a first section 41 and a second section 42, and with the telescopic cable harness 31 located in the second section 42 and the plug 32 located in the first section 41 when stored, the plug 32 and the telescopic cable harness 31 are stored in sections. This helps to avoid mutual interference between the telescopic cable harness 31 and the plug 32, ensuring that both are completely stored inside the housing 10. At the same time, it optimizes the space utilization of the cable tray 40 and improves storage stability.

[0068] Specifically, in this embodiment, the cable tray 40 adopts a segmented modular design. The first segment 41 is close to the window 13, and the second segment 42 extends into the housing 10. The first segment 41 and the second segment 42 can be connected by welding or other processes. The first segment 41 is a plug 32 storage compartment with a cross-section adapted to the shape of the plug 32. The second segment 42 is a channel for the telescopic wire harness 31 with a circular cross-section matching the diameter of the telescopic wire harness 31.

[0069] In some embodiments, the first segment 41 and the second segment 42 can be connected by a tapered transition section. When the device is in the storage state, the plug 32 is fully embedded in the first segment 41, and the telescopic cable harness 31 is naturally curled in the second segment 42. The transition section guides the telescopic cable harness 31 smoothly from the first segment 41 into the second segment 42, avoiding the telescopic cable harness 31 and the plug 32 from getting tangled during storage.

[0070] In some embodiments, a buffer mechanism, such as a rubber shock-absorbing ring or a spring support device, may be provided at the connection between the first segment 41 and the second segment 42.

[0071] In some embodiments, the second segment 42 and the first segment 41 are cylindrical stepped grooves, the diameter of the first segment 41 is larger than the diameter of the second segment 42, and the diameter of the first segment 41 is substantially equal to the diameter of the cross section of the plug 32.

[0072] Thus, by setting the first section 41 and the second section 42 of the cable tray 40 as cylindrical stepped grooves, the shape of the cable tray 40 is matched with that of the plug 32 and the telescopic cable harness 31, which helps to reduce the volume occupied after storage, while preventing the telescopic cable harness 31 from moving or loosening during storage, thereby improving storage reliability and structural compactness.

[0073] Specifically, in the embodiments of this application, the size design of the first segment 41 and the second segment 42 can be optimized according to the actual size of the plug 32 and the telescopic harness 31. For example, the diameter of the first segment 41 can be slightly larger than the cross-section of the plug 32 to ensure that the plug 32 can be easily inserted; the diameter of the second segment 42 is slightly smaller than the diameter of the telescopic harness 31 after it is retracted. The telescopic harness 31 is stably stored through a slight interference fit. The telescopic harness 31 is slightly compressed in the second segment 42, and the elasticity of the material is used to maintain the shape stability and prevent the telescopic harness 31 from loosening after storage.

[0074] Please see Figure 3 and Figure 4 In some embodiments, the energy storage device 100 further includes a first fixing member 51 and a second fixing member 52 that are connected in a mating manner. The first fixing member 51 is disposed on the housing 10, and the second fixing member 52 is disposed on the plug 32.

[0075] Thus, by setting the first fixing member 51 and the second fixing member 52 for mutual connection, the plug 32 is fixed, which helps to prevent the plug 32 from being accidentally pulled out due to misoperation or external force, avoids unnecessary stretching of the telescopic harness 31, and improves the stability and safety of equipment use.

[0076] Specifically, in some embodiments, the first fastener 51 may be a buckle disposed around the window 13 of the housing 10, and the second fastener 52 may be a slot on the outer shell of the plug 32 corresponding to the buckle.

[0077] In some embodiments, the first fixing member 51 may also be a pair of elastic claws disposed at the edge of the opening 13 and extending inward. The root of the claws may be integrally formed with the housing 10, and the end of the claws may be provided with a wedge-shaped guide surface. The second fixing member 52 is an annular groove disposed on the outer wall of the plug 32 and corresponding to the elastic claws. When the plug 32 is pushed into the opening 13, the wedge-shaped guide surface first contacts the outer edge of the plug 32 and deforms outward. After the claws slide past the outer edge, they spring back and engage with the groove, thus achieving mechanical locking.

[0078] Furthermore, a metal spring can be added to the back of the chuck. One end of the spring is riveted to the housing 10, and the other end abuts against the outside of the chuck, providing additional elasticity and preventing fatigue fracture of the chuck. The spring and the chuck can be fixed together with adhesive to prevent abnormal noise.

[0079] In some embodiments, the first fixing member 51 and the second fixing member 52 are magnetic suction members that cooperate with each other.

[0080] In this way, by setting the first fixing member 51 and the second fixing member 52 as mutually cooperating magnetic components, the plug 32 can be quickly fixed and unlocked, which is conducive to the user to fix or release the plug 32 with one hand, improving the convenience of use and the efficiency of operation.

[0081] Specifically, in some embodiments, both the first fixing member 51 and the second fixing member 52 can be magnets. For example, the first fixing member 51 and the second fixing member 52 can be a neodymium iron boron magnet assembly with opposite poles arranged. Furthermore, a soft iron magnetic sheet can be used to enhance the attraction force. The magnet surface should be nickel-plated to prevent oxidation and corrosion.

[0082] In some embodiments, the first fixing member 51 and the second fixing member 52 may be a magnetic member and an adsorption member made of metal that can be attracted by a magnet. For example, the first fixing member 51 is an annular iron sheet disposed inside the housing 10, and the second fixing member 52 is an annular permanent magnet embedded in the end of the plug 32. The iron sheet is attached to the stepped surface at the connection between the first section 41 and the second section 42 by adhesive backing. The permanent magnet is made of high temperature resistant rare earth material and has an epoxy coating on the surface for rust prevention.

[0083] Please see Figure 5In some embodiments, the plug 32 includes a body 321 and pins 322. The pins 322 are electrically connected to the retractable wire harness 31. The pins 322 are rotatably mounted on the body 321. The pins 322 are configured such that when the pins 322 rotate from a first position to a second position, the pins 322 rotate from inside the body 321 to outside the body 321.

[0084] In this way, by rotating the pin 322 onto the body 321 of the plug 32, and allowing the pin 322 to rotate from inside the body 321 to outside the body 321, the pin 322 can be folded and stored. This helps protect the pin 322 when not in use, preventing damage from collisions, while also reducing the overall size of the plug 32, making it easier to carry and store the device.

[0085] Specifically, in this embodiment, there are two pins 322, which are spaced apart. A shaft hole is provided at the same end of the two pins 322. The main body 321 and the pins 322 are connected by a rotating shaft. The rotating shaft is hidden inside the end face of the main body 321 and passes through the shaft hole to allow the pins 322 to be rotatably mounted on the main body 321.

[0086] Furthermore, the pin 322 is rectangular and long. The end face of the main body 321 is provided with two hidden grooves 3211. The pin 322 is rotatably disposed in the hidden grooves 3211. When the pin 322 is rotated to the first position, the pin 322 is hidden in the hidden grooves 3211. At this time, the side of the pin 322 is flush with the end face of the main body 321. When the pin 322 is rotated 90° from the first position to the second position, the axis of the pin 322 is perpendicular to the end face of the main body 321.

[0087] In some embodiments, a pair of semi-circular latches may be provided at the base of the pin 322, and a resilient pawl may be provided at the corresponding position on the main body 321. When the pin 322 rotates 90° from the first position to the second position, the pawl engages with the latches to lock the pin 322.

[0088] In some embodiments, the pin 322 can also be slidably disposed on the main body 321, and can be extended or retracted by pushing or pulling.

[0089] Please see Figure 5 and Figure 6 In some embodiments, the plug 32 includes a body 321 and a pull ring 323, the pull ring 323 being rotatably disposed on the body 321, and the pull ring 323 being configured such that when the pull ring 323 is rotated from a third position to a fourth position, the pull ring 323 rotates from inside the body 321 to outside the body 321.

[0090] Thus, by rotating the pull ring 323 onto the plug 32 body 321, and allowing the pull ring 323 to rotate from inside the body 321 to outside the body 321, a hidden design for the pull ring 323 is achieved. This helps to avoid the pull ring 323 occupying extra space when not in use. At the same time, when in use, the retractable cable harness 31 can be quickly stretched by pulling out the pull ring 323, improving the convenience and user experience of operation.

[0091] Specifically, in this embodiment, the pull ring 323 is U-shaped, and both ends of the pull ring 323 are folded 90° toward the inside of the opening of the pull ring 323 to form a rotating shaft. Rotating grooves are provided at opposite ends of the main body 321, and the rotating shafts at both ends of the pull ring 323 are embedded in the rotating grooves so that the pull ring 323 is rotatably mounted on the main body 321.

[0092] Furthermore, in this embodiment, a storage groove 3212 is provided at the edge of the end face of the main body 321, and a rotating groove is provided on the side wall of the storage groove 3212. When the pull ring 323 rotates to the third position, the pull ring 323 is stored in the storage groove 3212. At this time, the side of the pull ring 323 is flush with the end face of the main body 321. When the pull ring 323 rotates 90° from the third position to the fourth position, the plane where the pull ring 323 is located is perpendicular to the end face of the main body 321.

[0093] In some embodiments, the pull ring 323 and the body 321 are provided with anti-slip textures to improve grip and facilitate one-handed operation of the retractable cable harness 31. A limiting structure is provided between the pull ring 323 and the plug 32 body 321 to prevent the pull ring 323 from being damaged due to excessive rotation, thereby improving structural durability.

[0094] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0096] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage device, characterized in that, include: A housing, wherein a window is provided on the housing; A connecting line, comprising a retractable harness and a plug, is configured to connect the energy storage device to an external electrical source via the plug. The connecting line is also configured such that, in a naturally retracted state, the retractable harness is located within the housing, and the plug is at least partially exposed from the opening, allowing the retractable harness to be stretched by operating the plug, thereby allowing the plug to be pulled away from the housing.

2. The energy storage device according to claim 1, characterized in that, The cross-section of the opening and the plug are circular with approximately the same diameter. The plug is configured such that when the connecting wire is housed in the housing, the plug is embedded in the opening and seals the opening.

3. The energy storage device according to claim 1, characterized in that, The energy storage device also includes a cable tray, which is installed inside the housing and communicates with the window. The telescopic cable harness is disposed inside the cable tray.

4. The energy storage device according to claim 3, characterized in that, The inlet of the cable tray and the opening are circular with approximately the same diameter.

5. The energy storage device according to claim 3, characterized in that, The cable tray includes a first section and a second section, the second section being connected to the first section and the first section being connected to the housing. The plug is configured such that when the connecting wire is retracted into the housing, the retractable cable harness is retracted into the second section and the plug is retracted into the first section.

6. The energy storage device according to claim 5, characterized in that, The second segment and the first segment are cylindrical stepped grooves. The diameter of the first segment is larger than the diameter of the second segment. The diameter of the first segment is approximately equal to the diameter of the plug cross-section.

7. The energy storage device according to claim 1, characterized in that, The energy storage device also includes a first fixing member and a second fixing member that are connected in a mating manner. The first fixing member is disposed on the housing, and the second fixing member is disposed on the plug.

8. The energy storage device according to claim 7, characterized in that, The first fixing member and the second fixing member are magnetic suction members that cooperate with each other.

9. The energy storage device according to claim 1, characterized in that, The plug includes a body and prongs. The prongs are electrically connected to the retractable wire harness. The prongs are rotatably mounted on the body. The prongs are configured such that when the prongs rotate from a first position to a second position, the prongs rotate from inside the body to outside the body.

10. The energy storage device according to claim 1, characterized in that, The plug includes a body and a pull ring, the pull ring being rotatably disposed on the body, and the pull ring being configured such that when the pull ring is rotated from a third position to a fourth position, the pull ring rotates from inside the body to outside the body.

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