Portable power bank with LED illumination display function

Abstract

The invention discloses a portable power bank with an LED lighting display function, and belongs to the technical field of power banks, the portable power bank specifically comprises a charging body, a battery cell is arranged in the charging body, a plurality of flame-retardant adhesive tapes and supporting corner brackets are arranged on the outer wall of the battery cell, and pull strips are arranged on the outer walls of the flame-retardant adhesive tapes; according to the invention, the LED lamp can be turned on through the control panel according to needs, the outdoor emergency lighting requirement is met, the information such as the electricity consumption and the residual electricity quantity of the battery cell can be clearly known on the panel, the electricity consumption is reasonably planned, and the microprocessor automatically generates an inspection instruction when the battery cell is connected with the electric equipment, so that the inspection efficiency is improved. Line load and internal temperature are monitored in real time by means of a voltage sensor and a temperature sensor, signals are generated through conversion and comparison, real-time monitoring and early warning are achieved, power can be cut off emergently, connection between a battery cell and electric equipment can be cut off once abnormity occurs, damage to the equipment and involved risks caused by combustion of the battery cell are reduced, and property safety of a user is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of power banks, and more particularly to a portable power bank with an LED lighting display function. Background Art

[0002] With the wide application of mobile electronic devices, such as smartphones, tablets, wireless earphones, etc., people have put forward higher requirements for the battery life of these devices. Portable power banks have emerged, which can provide additional power support for mobile devices when people go out, solve the problem of insufficient device power, and greatly improve the convenience and flexibility of using mobile devices.

[0003] In some special scenarios, such as traveling at night, outdoor adventures, power outages for emergencies, etc., people need lighting equipment to provide light. Although traditional flashlights can meet the lighting needs, carrying an additional flashlight will increase the burden of traveling. Integrating the LED lighting function into a portable power bank allows users to conveniently use the lighting function while charging, achieving dual use of one item and reducing the number of items carried.

[0004] It should be noted in combination with the above content that, for example, a Chinese patent with the application number CN2024202714058 discloses a power bank with a lighting function, which can adapt to low-temperature environments through its self-heating function. The input and output of the power bank share a single interface (charging and discharging interface), and it has a built-in detection circuit that can determine whether the connected device is a power adapter or an electrical appliance.

[0005] However, during the outdoor use of the power bank, the normal external environment does not affect the use of the power bank, and traditional integrated output terminals have an external circuit recognition and anti-misinsertion function. More problems come from the abnormal outdoor use of the power bank and its controllable hazards to the internal battery core of the power bank in terms of flammability and explosiveness. Summary of the Invention

[0006] The purpose of the present invention is to provide a portable power bank with an LED lighting display function to solve the problems raised.

[0007] To achieve the above object, the present invention provides the following technical solution: A portable power bank with an LED lighting display function, including a charging body. Inside the charging body, there is a battery core. On the outer wall of the battery core, there are several flame-retardant rubber strips and support angle brackets. On the outer wall of the flame-retardant rubber strips, there are pull strips, and inside the flame-retardant rubber strips, there is a compressed colloid. On the top of the charging body, there is an intermediate sandwich.

[0008] At the center of the top of the intermediate interlayer, an integrated circuit board connected to the battery cell is provided. On both sides of the top of the intermediate interlayer, side columns are symmetrically arranged. At both ends of the integrated circuit board, ejection mechanisms extending to the inner walls of the side columns are symmetrically arranged. The ejection mechanism includes a fuse and a limit post. At the bottom of the limit post, a compression spring member and a rotating member are provided;

[0009] On the top of the intermediate interlayer, a multi-functional external connector is provided. On the outer wall of one end of the multi-functional external connector, a control panel is provided. On both sides of the top of the multi-functional external connector, LED lights are symmetrically arranged. At the center of the top of the multi-functional external connector, multiple charging interfaces are provided.

[0010] Further, a buffer chamber is provided between the charging body and the battery cell. On the outside of the buffer chamber, connecting pull bars and supporting sliding frames on the inner wall of the charging body are provided. Multiple groups of supporting angle brackets are symmetrically installed at the corners between the battery cell and the charging body.

[0011] Further, on the outer wall of the flame-retardant rubber strip close to the pull bar, a notch is recessed. On the inner wall of the pull bar, a thin sheet embedded in the outer wall of the notch is provided. And the outer wall of the pull bar is slidably sleeved on the inner wall of the supporting sliding frame. At the top of the pull bar, a buckle passing through the intermediate interlayer and connected to the bottom of the multi-functional external connector is provided.

[0012] Further, a number of through holes are penetrated through the surfaces of the intermediate interlayer and the side columns. At both ends of the intermediate interlayer, a number of electromagnetic locks connecting the multi-functional external connector and the charging body are symmetrically arranged. On the inner walls of the side columns facing the integrated circuit board, rectangular grooves are recessed.

[0013] Further, a thermally expandable warning device is provided inside the fuse. On both sides of the fuse, sliding covers connected to the bottom of the limit post are symmetrically arranged. Inside the sliding cover, a sliding rod connecting the thermally expandable warning device and the rotating member is provided.

[0014] Further, on the bottom column body of the limit post on the side facing the sliding cover, a guide groove is opened. At the top of the guide groove, a locking bar is hinged. Above the locking bar, a sliding cylinder sleeved on the outer wall of the limit post is provided. The compression spring member is sleeved between the bottom of the limit post and the sliding cylinder. At the bottom of the locking bar, a connecting rod clamped with the rotating member is provided. At the top of the connecting rod, a traction rope connected to the locking bar is provided.

[0015] Further, a microprocessor electrically connected to the integrated circuit board is provided inside the control panel. At the bottom of the microprocessor, a voltage sensor is provided for constantly collecting the current stability parameter values of the connection between the integrated circuit board and the multi-functional external connector. On the side of the integrated circuit board, a temperature sensor connected to the fuse is provided for constantly collecting the internal temperature parameter values during the operation of the integrated circuit board, and sending the collected current stability parameter values and internal temperature parameter values to the inside of the microprocessor.

[0016] Further, when the microprocessor receives the current stability parameter value and the internal temperature parameter value, it extracts the pre-stored warning parameter packet input during production from inside the microprocessor. Inside the warning parameter packet, there are an electric range value, a temperature range value, and a comprehensive unit peak value. Based on this, the current stability parameter value and the internal temperature parameter value received by the microprocessor are compared and analyzed with the electric range value and the temperature range value according to the acquisition time, and the acquisition time is divided into regions to obtain a time period. Taking the time period as the X-axis and the comprehensive unit peak value as the Y-axis, multiple groups of rectangular coordinate systems are constructed. It should be noted that the comprehensive range peak value includes the data Q of the current pressure increment table during the factory test of the device and the data P of the temperature pressure increment table during the factory test of the device. These two are only used for testing the data of the power bank during factory production, and the relevant parameter ranges are pre-stored according to actual needs.

[0017] The multiple groups of current stability parameter values within the time period are averaged to obtain the average current value DJz, and the multiple groups of internal temperature parameter values within the time period are averaged to obtain the average temperature value WJz. The average current value DJz and the average temperature value WJz are plotted on the rectangular coordinate system in the form of point plotting and line connecting. At the same time, the electric range value df and the temperature range value wf are boxed on the rectangular coordinate system.

[0018] Based on this, a line segment that is simultaneously close to the maximum values of the electric range value and the temperature range value at the same time is obtained, marked as the alarm limit, an alarm signal is generated, and the curve of the delayed line segment is focused on according to the generation of the alarm limit. If it continues to rise and exceeds the maximum values of the electric range value and the temperature range value, an offline signal is directly generated. The generated alarm signal and offline signal are sent to the microprocessor, and the microprocessor controls the operation of the fuse and the control panel.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. In the present invention, the user can easily start the LED light through the control panel according to external usage needs, providing lighting for the power bank when used outdoors, meeting the user's emergency lighting needs in a dark environment. The control panel can adjust and display various situations such as the used power, remaining power, usage time, and available time of the internal battery of the power bank. The user can clearly understand the power status of the power bank based on this, reasonably plan the usage, and avoid inconvenience caused by insufficient power.

[0021] 2. When the battery cell of the present invention is connected to an external electrical device through a microprocessor, an inspection instruction is automatically generated to control the voltage sensor and the temperature sensor to monitor the load status of the integrated circuit board and its associated circuits in real time; by continuously recording the current stability parameter values and the internal temperature parameter values, and performing conversion and comparison processing to generate corresponding signals, the intelligent monitoring of the working state of the power bank is realized, constituting real-time monitoring and early warning, emergency power-off protection, providing strong data support for safety protection and user use, cutting off the connection between the data line and the electrical device and the battery cell, and greatly reducing the damage to the electrical device and the risk of associated combustion when the battery cell may generate open flame combustion, and protecting the user's property safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0023] Figure 1 It is a three-dimensional view of the overall structure of the present invention;

[0024] Figure 2 It is a schematic structural view of the charging body of the present invention;

[0025] Figure 3 It is a schematic structural view of the battery cell of the present invention;

[0026] Figure 4 It is a schematic structural view of the flame retardant rubber strip of the present invention;

[0027] Figure 5 It is a schematic structural view of the middle interlayer of the present invention;

[0028] Figure 6 It is a schematic structural view of the ejection mechanism of the present invention;

[0029] Figure 7 It is a schematic structural view of the limit post of the present invention;

[0030] Figure 8 It is a schematic structural view of the multi-functional external connector of the present invention;

[0031] Figure 9 It is a bottom view structural view of the multi-functional external connector of the present invention;

[0032] Figure 10 It is a rectangular coordinate system display diagram of the temperature range value of the present invention;

[0033] Figure 11 It is a rectangular coordinate system display diagram of the electrical range value of the present invention.

[0034] Reference numerals: 1, charging body; 2, multi-functional external connector; 3, charging interface; 4, control panel; 5, LED light; 6, intermediate sandwich layer; 601, side post; 602, through hole; 603, integrated circuit board; 604, electromagnetic lock; 7, battery cell; 701, flame retardant rubber strip; 702, support sliding frame; 703, pull bar; 704, support angle bracket; 705, notch; 706, compression colloid; 8, ejection mechanism; 801, fuse; 802, sliding cover; 803, compression spring member; 804, sliding cylinder; 805, sliding rod; 806, rotating member; 807, connecting rod; 808, locking bar; 809, limit post. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1: Please refer to Figure 1 - Figure 11 As shown in the figure, this embodiment is a portable power bank with an LED lighting display function, including a charging body 1. A battery cell 7 is arranged inside the charging body 1. A plurality of flame retardant rubber strips 701 and support angle brackets 704 are arranged on the outer wall of the battery cell 7. A pull bar 703 is arranged on the outer wall of the flame retardant rubber strip 701, and a compression colloid 706 is arranged inside the flame retardant rubber strip 701. An intermediate sandwich layer 6 is arranged on the top of the charging body 1;

[0037] A soft package shell is arranged outside the charging body 1, and an anti-slip strap is arranged on the surface of the soft package shell. According to the use environment and conditions, one end of the data cable is inserted into the charging interface 3, and the other end of the data cable is connected to the electrical device. The battery cell 7 is electrically connected to the charging interface 3, the control panel 4, and the LED light 5 through the integrated circuit board 603. In this state, it is used to connect and charge the electrical device, and the battery cell 7 starts to continuously discharge.

[0038] An integrated circuit board 603 connected to the battery cell 7 is arranged at the center of the top of the intermediate sandwich layer 6. Side posts 601 are symmetrically arranged at the top of both sides of the intermediate sandwich layer 6. Ejection mechanisms 8 extending to the inner walls of the side posts 601 are symmetrically arranged at both ends of the integrated circuit board 603. The ejection mechanism 8 includes a fuse 801 and a limit post 809. A compression spring member 803 and a rotating member 806 are arranged at the bottom of the limit post 809.

[0039] A buffer chamber is provided between the charging body 1 and the battery cell 7. Outside the buffer chamber, a support slide 702 connecting the pull bar 703 and the inner wall of the charging body 1 is provided. Multiple groups of support angle brackets 704 are symmetrically installed at the corners between the battery cell 7 and the charging body 1;

[0040] On the outer wall of the flame-retardant rubber strip 701 close to the pull bar 703, a notch 705 is recessed. On the inner wall of the pull bar 703, a thin sheet is provided that is embedded in the outer wall of the notch 705. And the outer wall of the pull bar 703 is slidably sleeved on the inner wall of the support slide 702. At the top of the pull bar 703, there is a buckle that penetrates through the intermediate layer 6 and is connected to the bottom of the multi-functional external connector 2.

[0041] When the multi-functional external connector 2 is pushed away from the intermediate layer 6 by the ejection mechanism 8, the multi-functional external connector 2 drives the pull bar 703 to slide upward. The pull bar 703 drives the thin sheet to slide across the notch 705 area, prompting the flame-retardant rubber strip 701 to break along the notch 705 area. The internal compressed colloid 706 expands and opens, filling the inside of the buffer chamber. The compressed colloid 706 is made of aerogel material and is used for flame-retardant treatment of the battery cell 7 to reduce the risk of deflagration.

[0042] A number of through holes 602 are provided through the surfaces of the intermediate layer 6 and the side posts 601. At both ends of the intermediate layer 6, a number of electromagnetic locks 604 connecting the multi-functional external connector 2 and the charging body 1 are symmetrically provided. On the inner walls of the side posts 601 facing the integrated circuit board 603, rectangular grooves are recessed;

[0043] Inside the fuse 801, a thermally expandable warning device is provided. On both sides of the fuse 801, slide covers 802 connected to the bottom of the limit posts 809 are symmetrically provided. Inside the slide covers 802, a slide rod 805 connecting the thermally expandable warning device and the rotating part 806 is provided.

[0044] On the bottom column body of the limit post 809 facing the slide cover 802, a guide groove is opened. At the top of the guide groove, a lock bar 808 is hinged. Above the lock bar 808, a sliding cylinder 804 sleeved on the outer wall of the limit post 809 is provided. A compression spring member 803 is sleeved between the bottom of the limit post 809 and the sliding cylinder 804. At the bottom of the lock bar 808, a connecting rod 807 that is engaged with the rotating part 806 is provided. At the top of the connecting rod 807, a traction rope connected to the lock bar 808 is provided.

[0045] Embodiment 2: This embodiment is a portable power bank with LED lighting and display functions, including a multi-functional external connector 2 provided at the top of the middle interlayer 6. On the outer wall of one end of the multi-functional external connector 2, there is a control panel 4. On both sides of the top of the multi-functional external connector 2, there are symmetrically arranged LED lights 5. In the center of the top of the multi-functional external connector 2, there are multiple groups of charging interfaces 3. According to external usage needs, the LED lights 5 can be activated through the control panel 4 for lighting when the power bank is used outdoors. Through the control panel 4, it is convenient to adjust and display various situations such as the used power, remaining power, usage time, and available time of the internal battery cell 7 of the power bank, so as to use it reasonably according to the remaining power state of the power bank.

[0046] Inside the control panel 4, there is a microprocessor electrically connected to the integrated circuit board 603. At the bottom of the microprocessor, there is a voltage sensor for constantly collecting the current stability parameter value of the connection between the integrated circuit board 603 and the multi-functional external connector 2. On the side of the integrated circuit board 603, there is a temperature sensor connected to the fuse 801 for constantly collecting the internal temperature parameter value during the operation of the integrated circuit board 603, and sending the collected current stability parameter value and internal temperature parameter value to the inside of the microprocessor.

[0047] During the continuous discharge of the battery cell 7, affected by the external environment, the power of the connected electrical device, and the internal circuit state of the power bank, when the microprocessor connects the battery cell 7 to an external electrical device, it generates a patrol instruction and sends a loop instruction to the voltage sensor and the temperature sensor, prompting the voltage sensor and the temperature sensor to constantly monitor the load state of the integrated circuit board 603 and its associated circuits during use, for constantly recording the current stability parameter value and internal temperature parameter value of the load circuit, and performing conversion and comparison processing on them through the microprocessor to generate corresponding signals.

[0048] When the microprocessor receives the current stability parameter value and the internal temperature parameter value, it extracts the pre-stored warning parameter packet input during production from the inside of the microprocessor. Inside the warning parameter packet, there are power range values, temperature range values, and comprehensive unit peak values. Accordingly, the current stability parameter value and the internal temperature parameter value received by the microprocessor are compared and analyzed with the power range values and temperature range values according to the collection time, the collection time is divided into regions to obtain a time period, with the time period as the X-axis and the comprehensive unit peak value as the Y-axis, multiple groups of rectangular coordinate systems are constructed. It should be noted that the comprehensive range peak value includes the data Q of the current pressure increase table during the factory test of the device and the data P of the temperature pressure increase table during the factory test of the device. The two are only used for testing the data of the factory-produced power bank, and relevant parameter ranges are pre-stored according to actual needs.

[0049] Average the multi-group current stability parameter values within the time period to obtain the average current value DJz. Average the multi-group internal temperature parameter values within the time period to obtain the average temperature value WJz. Plot the average current value DJz and the average temperature value WJz on a rectangular coordinate system in a point-plotting and line-connecting manner. At the same time, frame the electrical range value df and the temperature range value wf on the rectangular coordinate system;

[0050] Accordingly, obtain the line segment that is synchronously close to the maximum values of the electrical range value and the temperature range value at the same time, mark it as the alarm limit, generate an alarm signal, and focus on the delayed line segment curve according to the generation of the alarm limit. If it continues to rise and exceeds the maximum values of the electrical range value and the temperature range value, directly generate an offline signal, and send the generated alarm signal and offline signal to the microprocessor. The microprocessor controls the fuse 801 and the control panel 4 to operate.

[0051] When the microprocessor generates an alarm signal, the microprocessor generates text in the style of "Load abnormality / Temperature too high / Wait for cooling before use / Place in a non-ignitable area and let it stand still" and displays it on the control panel 4. There are several speakers symmetrically arranged on both sides of the control panel 4. The microprocessor generates an audio in the style of "High temperature alarm. Please place the power bank in a low-temperature environment with backlight and no ignitable objects around, and wait for it to cool down before using" and plays it in a loop for reminder and warning.

[0052] When the microprocessor generates an offline signal, the microprocessor generates text in the style of "Safety alarm / Keep the power bank away from ignitable objects and let it stand still" and flashes it on the control panel 4, and at the same time, an audio in the style of "Power bank abnormality / High temperature risk / Keep away 3 - 5 meters" plays in a loop.

[0053] Meanwhile, 1 minute after the alarm reminder, in the case where the temperature inside the power bank continues to rise and there is an abnormal current overload, the microprocessor controls the fuse 801 to operate. The thermal expansion type early warning device inside the fuse 801 operates under high temperature and active control. The thermal expansion type early warning device is such as the KSD301 snap-action thermostat / KSD301 - TM22 model, not limited to this. At the same time, a micro electric cylinder module can be equipped to drive the slide rod 805 to extend towards both ends. The slide rod 805 pushes the bottom of the rotating part 806, causing the rotating part 806 to rotate counterclockwise along the central axis, as Figure 7 shown.

[0054] A smooth surface connected to the bottom of the connecting rod 807 is provided on the top of the rotating member 806. When the rotating member 806 rotates, the smooth surface changes from a horizontal state to a vertical state, causing the bottom of the connecting rod 807 to slide down along the smooth surface. A return spring can be provided on the top of the connecting rod 807 and on the side away from the locking bar 808 to cooperate with the sliding of the connecting rod 807. The connecting rod 807 drags the locking bar 808 through the traction line. The locking bar 808 loses the support of the connecting rod 807 and is pulled and dragged by its sliding, causing the locking bar 808 to move along the sliding trajectory of the connecting rod 807. Accordingly, the compression spring member 803 loses the limit lock along the top area of the guide groove, and the compression spring member 803 resets and lifts the slide cylinder 804 to move upward. Multiple groups move synchronously to lift the multifunctional external connector 2 out of the middle interlayer 6. The multifunctional external connector 2 is made of lightweight plastic.

[0055] Before the fuse 801 is activated, the electronic lock is powered on to release the connection between the middle layer 6 and the multifunctional external connector 2 and the charging body 1, while the bottom of the multifunctional external connector and the integrated circuit board 603 are connected by a power terminal contact type. Therefore, after the multifunctional external connector 2 is separated from the integrated circuit board 603, it is pushed by the ejection mechanism 8 to disconnect the data cable and the electrical equipment plugged into the charging interface 3 from the battery cell 7. Therefore, even if the battery cell 7 is damaged and produces open flames, the damage to the electrical equipment and the involvement of combustion are reduced.

[0056] It can be seen from the combination of Example 1 and Example 2 that the power bank of the present invention has multiple practical functions. The user can start the LED light through the control panel 4 as needed to meet the outdoor emergency lighting needs. The user can also clearly understand the information such as the power usage and remaining power of the battery cell 7 on the panel to reasonably plan the power consumption. At the same time, when the battery cell 7 is connected to the electrical equipment, the microprocessor automatically generates an inspection instruction, and uses the voltage and temperature sensors to monitor the line load and internal temperature in real time, and generates signals through conversion and comparison to achieve real-time monitoring and early warning. Once an abnormality occurs, the power can be cut off urgently to cut off the connection between the battery cell 7 and the electrical equipment, thereby reducing the damage to the equipment and the risk of involvement due to the burning of the battery cell 7, and ensuring the safety of user property.

[0057] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A portable power bank with an LED lighting display function, comprising a charging body (1), characterized in that, Inside the charging body (1), a battery cell (7) is provided. A number of flame-retardant rubber strips (701) and support angle brackets (704) are provided on the outer wall of the battery cell (7). A pull bar (703) is provided on the outer wall of the flame-retardant rubber strip (701), and a compression colloid (706) is provided inside the flame-retardant rubber strip (701). A middle interlayer (6) is provided at the top of the charging body (1). At the center of the top of the middle interlayer (6), an integrated circuit board (603) connected to the battery cell (7) is provided. Side columns (601) are symmetrically provided at the top on both sides of the middle interlayer (6). Elastic ejection mechanisms (8) extending to the inner walls of the side columns (601) are symmetrically provided at both ends of the integrated circuit board (603). The elastic ejection mechanism (8) includes a fuse (801) and a limit post (809). A compression spring member (803) and a rotating member (806) are provided at the bottom of the limit post (809). A multi-functional external connector (2) is provided at the top of the middle interlayer (6). A control panel (4) is provided on the outer wall of one end of the multi-functional external connector (2). LED lights (5) are symmetrically provided on both sides of the top of the multi-functional external connector (2). Multiple charging interfaces (3) are provided at the center of the top of the multi-functional external connector (2).

2. The portable power bank with LED lighting and display function according to claim 1, characterized in that, A buffer chamber is provided between the charging body (1) and the battery cell (7). A connecting pull bar (703) and a support sliding frame (702) connecting to the inner wall of the charging body (1) are provided on the outside of the buffer chamber. Multiple groups of the support angle brackets (704) are symmetrically installed in the corners between the battery cell (7) and the charging body (1).

3. The portable power bank with LED lighting and display function according to claim 2, wherein, A notch (705) is recessed on the outer wall of the flame-retardant rubber strip (701) close to the pull bar (703). A thin sheet embedded in the outer wall of the notch (705) is provided on the inner wall of the pull bar (703), and the outer wall of the pull bar (703) is slidably sleeved on the inner wall of the support sliding frame (702). A buckle penetrating through the middle interlayer (6) and connecting to the bottom of the multi-functional external connector (2) is provided at the top of the pull bar (703).

4. The portable power bank with LED lighting and display function according to claim 1, characterized in that A number of through holes (602) are penetrated through the surfaces of the middle interlayer (6) and the side columns (601). A number of electromagnetic locks (604) connecting the multi-functional external connector (2) and the charging body (1) are symmetrically provided at the edges at both ends of the middle interlayer (6). Rectangular grooves are recessed on the inner walls of the side columns (601) facing the integrated circuit board (603).

5. The portable power bank with LED lighting and display function according to claim 4, characterized in that, A thermally-expanding type early warning device is provided inside the fuse (801). Slide covers (802) connected to the bottom of the limit post (809) are symmetrically provided on both sides of the fuse (801). A slide rod (805) connecting the thermally-expanding type early warning device and the rotating member (806) is provided inside the slide cover (802).

6. The portable power bank with LED lighting and display function according to claim 5, characterized in that, On the bottom column of the limiting post (809) facing the sliding cover (802), a guiding groove is formed. A locking bar (808) is hinged at the top of the guiding groove. Above the locking bar (808), a sliding cylinder (804) sleeved on the outer wall of the limiting post (809) is provided. The compression spring member (803) is sleeved between the bottom of the limiting post (809) and the sliding cylinder (804). At the bottom of the locking bar (808), a connecting rod (807) engaged with the rotating member (806) is provided. At the top of the connecting rod (807), a traction rope connected to the locking bar (808) is provided.

7. The portable power bank with LED lighting and display function according to claim 7, characterized in that, Inside the control panel (4), a microprocessor electrically connected to the integrated circuit board (603) is provided. At the bottom of the microprocessor, a voltage sensor is provided for collecting the current stability parameter values of the connection between the integrated circuit board (603) and the multi-functional external connector (2). On the side of the integrated circuit board (603), a temperature sensor connected to the fuse (801) is provided for constantly collecting the internal temperature parameter values during the operation of the integrated circuit board (603), and sending the collected current stability parameter values and internal temperature parameter values to the inside of the microprocessor.

8. The portable power bank with LED lighting display function according to claim 7, characterized in that, When the microprocessor receives the current stability parameter values and internal temperature parameter values, it extracts the pre-stored warning parameter packet input during production from the inside of the microprocessor. Inside the warning parameter packet, there are electrical range values, temperature range values, and comprehensive unit peak values. The current stability parameter values and internal temperature parameter values received by the microprocessor are compared and analyzed with the electrical range values and temperature range values according to the collection time, and the collection time is divided into regions to obtain a time period. Taking the time period as the X-axis and the comprehensive unit peak value as the Y-axis, multiple groups of rectangular coordinate systems are constructed; The multiple groups of current stability parameter values within the time period are averaged to obtain the average electrical value DJz, and the multiple groups of internal temperature parameter values within the time period are averaged to obtain the average temperature value WJz. The average electrical value DJz and the average temperature value WJz are plotted on the rectangular coordinate system in the way of plotting points and connecting lines. At the same time, the electrical range value df and the temperature range value wf are boxed on the rectangular coordinate system; Accordingly, the line segment closest to the maximum values of the electrical range value and the temperature range value at the same time is obtained, marked as the alarm limit, an alarm signal is generated, and the curve of the delayed line segment is focused on according to the generation of the alarm limit. If it continues to rise and exceeds the maximum values of the electrical range value and the temperature range value, an offline signal is directly generated. The generated alarm signal and offline signal are sent to the microprocessor, and the microprocessor controls the operation of the fuse (801) and the control panel (4).

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