Multifunctional mobile power supply

Abstract

The utility model discloses a multifunctional mobile power supply. The multifunctional mobile power supply comprises a battery module; the first interface can be used for connecting an electrical plug of an electrical appliance; the second interface is used as an electronic product charging interface; and the power conversion module is used for being inserted into a third interface of an electric plug of the battery car. The multifunctional mobile power supply not only can supply power to electric appliances, but also can charge electronic products, and also can be used as a power supply of a battery car. When a user rides the battery car to go out, electric appliances and electronic products can be inserted into the power supply of the battery car to be charged, the user does not need to carry power supplies such as a power bank, the trouble of finding the power bank and the like is saved, the user can use electricity more conveniently, and the experience feeling is better. The multifunctional mobile power supply can be taken out from the battery compartment of the battery car, so that the power supply of the battery car can be used for charging at any position more conveniently, and the experience feeling is further improved.

Description

Technical Field

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

[0002] Existing multi-functional power banks typically include batteries and interfaces for various electronic devices. Some larger multi-functional power banks also include 220V electrical appliance interfaces. Multi-functional power banks can conveniently provide power to a variety of types of electrical devices.

[0003] The power source for electric bicycles is usually installed inside the battery compartment. The battery is typically not removed during daily use, only for installation, replacement, or maintenance. When riding an electric bicycle, if you need to plug in electrical devices or charge electronic products, you have to either carry the device in advance or search for a power outlet or portable power bank. This makes travel very inconvenient and results in a poor user experience. Utility Model Content

[0004] This utility model provides a multifunctional portable power supply to solve the problems of inconvenience and poor user experience when using electricity while riding an electric bicycle.

[0005] The specific technical solution of this utility model embodiment is as follows: a multifunctional mobile power supply, comprising: a battery module; a first interface for connecting a power plug to an electrical appliance; a second interface for serving as a charging interface for electronic products; a power conversion module, wherein a first end of the power conversion module is connected to the voltage output terminal of the battery module, a second end is connected to the first interface, and a third end is connected to the second interface; the multifunctional mobile power supply further comprises: a third interface for inserting a power plug into an electric vehicle.

[0006] In some embodiments, the multifunctional power bank further includes: a positioning module for locating the position of the multifunctional power bank; and a wireless communication module connected to the positioning module and the battery management system of the battery module, respectively, for sending the positioning information and power status information of the multifunctional power bank to a remote device.

[0007] In some embodiments, the third interface is connected to the voltage output terminal of the battery module; and / or, the third interface is connected to the fourth terminal of the power conversion module.

[0008] In some embodiments, the second interface includes at least one of the following: a USB interface, a Type-C interface, a Lightning interface, a magnetic interface, and a wireless charging interface.

[0009] In some embodiments, the multifunctional power bank further includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body; a positioning module and / or a wireless communication module are disposed in the cylindrical body, or a positioning module and / or a wireless communication module are disposed on the cover.

[0010] In some embodiments, the cover includes: a first cover that matches the opening of the cylinder and has a first groove; and a second cover that matches the opening of the first groove and is detachably connected to the first cover.

[0011] In some embodiments, the positioning module and / or the wireless communication module are disposed within the first groove.

[0012] In some embodiments, the first interface and the second interface are disposed on the surface of the first cover.

[0013] In some embodiments, the multifunctional power bank further includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body; the battery module includes a plurality of battery cells connected in series; the plurality of battery cells are arranged in the cylindrical body in the same direction, and the two ends of the battery cells are disposed near the inner wall of the cylindrical body.

[0014] In some embodiments, the two electrical connection points of a battery cell are located at the same end of the battery; the cylinder further includes: a limiting member for limiting the arrangement position of each battery cell; the first surface of the limiting member has a first hole matching the electrical connection point of the battery cell to expose the electrical connection point of the battery cell; a battery management system board, the battery management system board having a second hole matching the electrical connection point of the battery cell to expose the electrical connection point of the battery cell; and a conductor sheet, spanning the battery management system board and the limiting member, passing through the first hole and the second hole to connect the electrical connection points of two adjacent battery cells.

[0015] In some embodiments, the limiting member includes a first limiting plate and a second limiting plate, which are detachably connected.

[0016] In some embodiments, the multifunctional power bank further includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body; the battery module is disposed inside the cylindrical body; and the gaps inside the cylindrical body are filled with insulating adhesive.

[0017] In some embodiments, the multifunctional power bank includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body; a handle is provided on the cylindrical body or the cover.

[0018] In some embodiments, the cover is further provided with a second groove, and a handle matching the shape of the second groove is provided in the second groove; the handle has a first working state and a second working state. In the first working state, the handle is located in the second groove, and the top surface of the handle is flush with the top surface of the cover; in the second working state, the handle is perpendicular to the surface of the cover.

[0019] The multi-functional portable power bank provided in this manual can power electrical appliances, charge electronic devices, and also serve as a power source for electric scooters. When riding an electric scooter, users can plug their appliances and electronic devices into the scooter's power source to charge, effectively using the scooter's power source as a portable power bank. This eliminates the need to carry a separate power bank and avoids the hassle of searching for one, making charging and using electricity more convenient and providing a better user experience. The multi-functional portable power bank can be removed from the scooter's battery compartment, allowing users to conveniently charge their devices from anywhere, further enhancing the user experience.

[0020] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0022] Figure 1 Electrical connection diagram of a multifunctional portable power supply provided by this utility model;

[0023] Figure 2 An electrical connection diagram of the power conversion module in a multifunctional portable power bank provided by this utility model;

[0024] Figure 3 This is a schematic diagram of an embodiment of a third interface;

[0025] Figure 4Electrical connection diagram of another multifunctional portable power supply provided by this utility model;

[0026] Figure 5 A schematic diagram of the structure of the multifunctional portable power supply provided by this utility model;

[0027] Figure 6 A schematic diagram of another structure of the multifunctional portable power supply provided by this utility model;

[0028] Figure 7 This is a diagram showing the handle in its first working state.

[0029] The reference numerals in the above figures are as follows: Battery module 10, battery cell 11, battery management system board 12; first interface 20; second interface 30; power conversion module 40; third interface 50, third interface 51 for electric vehicles with a rated voltage of 36V, third interface 52 for electric vehicles with a rated voltage of 48V, third interface 53 for electric vehicles with a rated voltage of 60V, third interface 54 for electric vehicles with a rated voltage of 72V; positioning module 60; wireless communication module 70; cylinder 80, limiting member 81, first limiting plate 811, second limiting plate 812, conductor sheet 82; cover 90, first cover 91, second cover 92, handle 93; battery management system A, remote device B, first groove C, second groove D, power indicator light E, power switch F. Detailed Implementation

[0030] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are only for explaining the purpose of this utility model and should not be construed as limiting this utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, or it can be a connection within two elements, which can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] This manual provides a multi-functional portable power bank, such as... Figure 1 As shown, it includes: battery module 10, first interface 20, second interface 30, power conversion module 40 and third interface 50.

[0033] The battery module 10 is disposed inside the casing 80. The battery module 10 includes multiple battery cells 11 connected in series and a battery management system A.

[0034] The first interface 20 can be used to connect the power plug of an electrical appliance. The voltage rating of electrical appliance plugs varies in different regions; for example, some are 220-230V, some are 110-130V, and some are 100V. A multi-functional power bank can be equipped with one or more first interfaces 20.

[0035] The first interface 20 may include a two-hole interface or a three-hole interface.

[0036] The second interface 30 is used as a charging interface for electronic products.

[0037] Electronic products include audio-visual equipment (such as televisions, radios, and audio equipment), personal electronic products (such as smartphones, tablets, electronic dictionaries, and video game consoles), computers and peripherals (such as computers, printers, scanners, portable hard drives, and USB flash drives), and communication equipment (such as landline telephones and network communication equipment).

[0038] The plugs of electrical appliances and the charging interfaces of electronic products differ significantly in function, application scenarios, and specifications. Functionally, electrical appliance plugs primarily provide power to various appliances, focusing on meeting their power requirements. In contrast, electronic product charging interfaces require intelligent management of the charging process, such as controlling charging current and voltage to protect the battery and extend its lifespan. Many electronic product charging interfaces also function as data transfer devices. In terms of application scenarios, electrical appliances generally include various household and industrial appliances. These devices are typically fixed in a specific location and can be directly connected to mains power via a plug. Electronic products, however, have diverse usage scenarios and frequently need to be moved; therefore, their charging interfaces usually require an adapter plug to connect to mains power.

[0039] The second interface 30 may include various types, such as USB interface types (e.g., Type-A, Type-B, Type-C USB), brand-specific interfaces (e.g., Lightning interfaces), magnetic interfaces, wireless charging interfaces, etc.

[0040] The multi-functional power bank can be equipped with one or more types of second interfaces 30, and each type can be equipped with one or more interfaces.

[0041] The first end of the power conversion module 40 is connected to the voltage output terminal of the battery module 10, the second end of the power conversion module 40 is connected to the first interface 20, and the third end of the power conversion module 40 is connected to the second interface 30. Figure 2 As shown.

[0042] The third interface 50 is used to insert the power plug of the electric vehicle, so that the multi-functional power bank can also supply power to the electric vehicle.

[0043] This multi-functional power bank can power electrical appliances, charge electronic devices, and serve as a power source for electric scooters. When riding an electric scooter, users can plug their appliances and electronic devices into the scooter's power source to charge, effectively using the scooter's power source as a portable power bank. This eliminates the need to carry a separate power bank and avoids the hassle of searching for one, making charging and using electricity more convenient and improving the user experience. The multi-functional power bank can be removed from the scooter's battery compartment, allowing users to conveniently charge their devices from anywhere, further enhancing the user experience.

[0044] The third interface 50 can be one or multiple.

[0045] When there is only one third interface 50, the third interface 50 can be connected to the voltage output terminal of the battery module 10, or the third interface 50 can be connected to the fourth terminal of the power conversion module 40.

[0046] When there are multiple third interfaces 50, these third interfaces 50 can be matched with electric vehicles of various rated voltages. For example, Figure 3 As shown, 51 represents the third interface suitable for electric vehicles with a rated voltage of 36V, 52 represents the third interface suitable for electric vehicles with a rated voltage of 48V, 53 represents the third interface suitable for electric vehicles with a rated voltage of 60V, and 54 represents the third interface suitable for electric vehicles with a rated voltage of 72V.

[0047] When there are multiple third interfaces 50, one of the third interfaces 50 can be connected to the voltage output terminal of the battery module 10, and the other third interfaces 50 can be connected to the power conversion module 40; or all the third interfaces 50 can be connected to the power conversion module 40.

[0048] In some embodiments, such as Figure 4 As shown, the multi-functional power bank also includes a positioning module 60 and a wireless communication module 70.

[0049] The positioning module 60 is used to locate the position of the multi-functional power bank. The positioning module 60 can be a GPS (Global Positioning System) module, a BeiDou positioning module, a base station positioning module, a Wi-Fi positioning module, or a Bluetooth positioning module.

[0050] The wireless communication module 70 is connected to the positioning module 60 and the battery management system A of the battery module 10, respectively. The wireless communication module 70 is used to send the positioning information of the multi-functional mobile power bank and the battery status information obtained from the battery management system A to the remote device B.

[0051] Remote device B can be a remote server of the unified management platform, such as the server of a shared electric bicycle rental platform. Based on the information sent by the wireless communication modules 70 of each multi-functional power bank, the unified management platform can locate the power bank to prevent power loss; it can also locate the electric bicycles equipped with multi-functional power banks for dispatching; and it can promptly recommend locations for users to replace their multi-functional power banks when their electric bicycles are low on power.

[0052] Remote device B can also be a user terminal, which can obtain the location of the multi-functional power bank at any time. It can locate the location of the electric vehicle carrying the multi-functional power bank, and can also determine its location in time when the multi-functional power bank is taken out for use, so as to prevent it from being lost.

[0053] In some embodiments, such as Figure 5 As shown, the multi-functional power bank also includes a cylindrical body 80 with an opening on one side and a cover 90 that matches the opening of the cylindrical body 80.

[0054] The positioning module 60 and / or the wireless communication module 70 can be disposed inside the cylinder 80, or they can be disposed on the cover 90. Alternatively, one of the positioning module 60 and the wireless communication module 70 can be disposed inside the cylinder 80, and the other can be disposed on the cover 90.

[0055] When the positioning module 60 or the wireless communication module 70 is disposed on the cover 90, it can be disposed in a hidden position on the cover 90. Specifically, the cover 90 may include a first cover 91 and a second cover 92.

[0056] The first cover 91 matches the opening of the cylinder 80, and the first cover 91 is provided with a first groove C.

[0057] The second cover 92 matches the opening of the first groove C, and the second cover 92 and the first cover 91 are detachably connected.

[0058] The first interface 20, the second interface 30, and the third interface 50 can all be set on the first cover 91.

[0059] The aforementioned positioning module 60 and / or wireless communication module 70 can be housed within the first groove C. In the event of damage to the positioning module 60 and / or wireless communication module 70, repair or replacement can be performed simply by opening the second cover 92, without needing to open the cylinder 80 to inspect the internal components. This saves on repair costs and protects the safety of the battery module inside the cylinder 80. Furthermore, it maintains a neat and aesthetically pleasing appearance for the multi-functional power bank.

[0060] In some embodiments, the power conversion module 40 may also be disposed within the first groove C. Alternatively, the power conversion module 40 may also be disposed within the cylinder 80.

[0061] The multi-functional power bank includes a cylindrical body 80 with an opening on one side and a cover 90 that matches the opening of the cylindrical body 80. The battery module 10 includes multiple battery cells 11 connected in series. (Example...) Figure 6 As shown, multiple battery cells 11 are arranged in the same direction inside the cylinder 80, with both ends of the battery cells 11 located near the inner wall of the cylinder 80.

[0062] The battery cells can be cylindrical. The battery cells 11 are arranged in the same direction, meaning their axes are parallel. This arrangement minimizes wasted space, thus enabling the miniaturization of the multi-functional power bank.

[0063] Furthermore, such as Figure 6 As shown, the two electrical connection points of the battery cell 11 are located at the same end of the battery. The casing 80 also includes a limiting member 81, a battery management system board 12 in the battery module 10, and a conductor sheet 82.

[0064] The limiting member 81 is used to restrict the arrangement position of each battery cell. The first surface of the limiting member 81 has a first hole that matches the electrical connection point of the battery cell 11, so as to expose the electrical connection point of the battery cell. Figure 6As shown, the limiting member 81 may include a first limiting plate 811 and a second limiting plate 812. The first limiting plate 811 and the second limiting plate 812 are detachably connected, specifically, they may be connected together by a plurality of matching plug-in parts protruding from the surface of the plate. The first surface of the limiting member 81 is parallel to the axis of the battery cell 11.

[0065] The battery module 10 also includes a battery management system board 12. The battery management system board 12 has second holes that match the electrical connection points of the individual battery cells, exposing these connection points. Printed wires can be installed on the battery management system board 12 to reduce the number of wires deployed inside the casing 80. The battery management system board 12 can also house chips or components required for battery management, or these chips or components can be separately mounted on another PCB board electrically connected to the battery management system board 12.

[0066] Conductor sheet 82 spans the battery management system board 12 and the limiting member 81, passing through the first hole and the second hole to connect the electrical connection points of two battery cells. It should be noted that... Figure 6 This is merely a schematic diagram illustrating the positional relationship between the battery management system board 12, the limiting member 81, and the conductor sheet 82. The actual positional relationship is that the limiting member 81 is set close to the battery cell 11, the battery management system board 12 is located outside the limiting member 81, and the conductor sheet 82 is located outside the limiting member 81.

[0067] The limiting member 81 is made of insulating material. The battery management system board 12 is arranged parallel to the first surface of the limiting member 81. The conductor pieces 82, which serve as conductor connecting lines, are concentrated on one side of the cylinder 80, which facilitates the centralized deployment of connecting lines and simplifies the connecting lines. The conductor pieces 82 span the limiting member 81 and the battery management system board 12, pass through the first hole and the second hole, and connect the electrical connection points of two battery cells, which facilitates shortening the connection lines between the electrical connection points of the battery cells and the battery management system board 12. The limiting member 81, made of insulating material, is set between the battery management system board 12 and the electrical connection points of the battery cells, which can prevent incorrect electrical connection relationships between the printed wires on the battery management system board 12 and the electrical connection points of the battery cells due to excessive contact area.

[0068] The second hole on the battery management system board 12 can be smaller than the first hole on the limiting member 81, so that the limiting member 81 can be exposed through the second hole. The conductor sheet 82 can cross the battery management system board 12, pass through the second hole, and be fixed to the limiting member 81 (for example, by fixing it to the limiting member 81 with insulating glue) to prevent the conductor sheet 82 from shifting, which could lead to short circuits or other faults in the battery cells.

[0069] The arrangement of battery cells and the series connection between battery cells are achieved by the limiting member 81, the battery management system board 12 and the conductor sheet 82, which makes the internal layout of the multi-functional power bank more compact, thereby enabling the miniaturization design of the multi-functional power bank.

[0070] In some embodiments, the multifunctional power bank further includes a cylindrical body 80 with an opening on one side, a cover 90 that matches the opening of the cylindrical body 80, a battery module 10 disposed inside the cylindrical body 80, and insulating glue filling the pores inside the cylindrical body 80. By filling the pores inside the cylindrical body 80 with insulating glue, the insulation performance of the pores inside the cylindrical body can be improved, preventing air in the pores from conducting electricity due to various reasons and causing faults such as short circuits and open circuits. On the other hand, it can also fix the position of each component, preventing the components from becoming loose or displaced during movement, thereby causing faults such as short circuits and open circuits.

[0071] The connection between the cylinder 80 and the cover 90 can be left unfilled with insulating glue, so that the cover 90 can be removed to check the condition inside the cylinder 80. This way, even if the multi-functional power bank is filled with insulating glue, it can still be disassembled for inspection and repair.

[0072] In some embodiments, the multi-functional power bank includes a cylindrical body 80 with an opening on one side, a cover 90 that matches the opening of the cylindrical body 80, and a handle 93 provided on the cylindrical body 80 or the cover 90.

[0073] When the handle 93 is provided on the cover 90, the cover 90 is also provided with a second groove D, and the handle 93, which matches the shape of the second groove D, is provided in the second groove D. The handle 93 has a first working state and a second working state.

[0074] In the first working state, the handle 93 is located in the second groove D, and the top surface of the handle 93 is flush with the top surface of the cover 90. For example... Figure 7 As shown, this first working state is when the handle 93 is not in use. This setting makes the appearance of the multi-functional power bank neater and more aesthetically pleasing when the handle 93 is not in use. In addition, it also makes the battery compartment of the electric vehicle using this multi-functional power bank more regular in shape and easier to design, making full use of the limited space inside the electric vehicle.

[0075] In the second operating state, the handle 93 is perpendicular to the surface of the cover 90, allowing the user to lift the multi-functional power bank using the handle 93. This second state is the state in which the handle 93 is lifted.

[0076] The power conversion module 40 can be disposed inside the cylinder 80 or in the first groove C. When the power conversion module 40 is disposed in the first groove C, a hole can be made in the second cover 92 to expose the power indicator light E and the power switch F on the power conversion module 40.

[0077] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0078] The use of the terms "comprising" or "including" to describe combinations of elements, components, parts, or steps herein also contemplates embodiments essentially consisting of such elements, components, parts, or steps. The use of the term "may" herein is intended to indicate that any described attribute included by "may" is optional.

[0079] The above descriptions are merely several embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A multifunctional portable power bank, characterized in that, include: Battery module; The first interface can be used to connect the power plug of electrical appliances; The second interface is used as a charging interface for electronic products; A power conversion module, wherein a first end of the power conversion module is connected to the voltage output terminal of the battery module, a second end is connected to a first interface, and a third end is connected to a second interface; The multi-functional portable power bank also includes a third interface for inserting the power plug of the electric vehicle.

2. The multifunctional portable power bank according to claim 1, characterized in that, The multifunctional power bank also includes: The positioning module is used to locate the position of the multifunctional power bank; The wireless communication module is connected to the positioning module and the battery management system of the battery module, respectively, and is used to send the positioning information and power status information of the multi-functional mobile power supply to remote devices.

3. The multifunctional portable power bank according to claim 1, characterized in that, The third interface is connected to the voltage output terminal of the battery module; and / or, The third interface is connected to the fourth terminal of the power conversion module.

4. The multifunctional portable power bank according to claim 1, characterized in that, The second interface includes at least one of the following: USB interface, Type-C interface, Lightning interface, magnetic interface, and wireless charging interface.

5. The multifunctional portable power bank according to claim 1, characterized in that, The multi-functional power bank also includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body; A positioning module and / or a wireless communication module are provided inside the cylinder, or a positioning module and / or a wireless communication module are provided on the cover.

6. The multifunctional portable power bank according to claim 5, characterized in that, The cover includes: A first cover body, which matches the opening of the cylinder body, and a first groove is provided on the first cover body; The second cover matches the opening of the first groove, and the second cover is detachably connected to the first cover.

7. The multifunctional portable power bank according to claim 6, characterized in that, The positioning module and / or the wireless communication module are disposed within the first groove.

8. The multifunctional portable power bank according to claim 6, characterized in that, The first interface and the second interface are disposed on the surface of the first cover.

9. The multifunctional portable power bank according to claim 1, characterized in that, The multi-functional power bank also includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body; The battery module includes multiple battery cells connected in series; the multiple battery cells are arranged in the same direction inside the cylinder, with both ends of the battery cells located near the inner wall of the cylinder.

10. The multifunctional portable power bank according to claim 9, characterized in that, The two electrical connection points of a single battery cell are located at the same end of the battery; the casing also includes: A limiting member is used to restrict the arrangement position of each battery cell; the first surface of the limiting member has a first hole that matches the electrical connection point of the battery cell to expose the electrical connection point of the battery cell. A battery management system board, wherein a second hole is provided on the battery management system board to match the electrical connection point of the battery cell, so as to expose the electrical connection point of the battery cell; The conductor sheet extends across the battery management system board and the limiting member, passes through the first hole and the second hole, and connects the electrical connection points of two adjacent battery cells.

11. The multifunctional portable power bank according to claim 10, characterized in that, The limiting component includes a first limiting plate and a second limiting plate, which are detachably connected.

12. The multifunctional portable power bank according to claim 1, characterized in that, The multi-functional power bank also includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body; The battery module is disposed inside the cylindrical body; the gaps inside the cylindrical body are filled with insulating adhesive.

13. The multifunctional portable power bank according to claim 1, characterized in that, The multi-functional portable power bank includes a cylindrical body with an opening on one side and a cover that matches the opening of the cylindrical body. A handle is provided on the cylinder or the cover.

14. The multifunctional portable power bank according to claim 13, characterized in that, The cover is also provided with a second groove, and a handle matching the shape of the second groove is provided in the second groove; the handle has a first working state and a second working state. In the first working state, the handle is located in the second groove, and the top surface of the handle is flush with the top surface of the cover. In the second working state, the handle is perpendicular to the surface of the cover.

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