Charger baby with lighting function
By integrating LED lighting circuit board and heating film in the power bank, the problem of large size and outdoor lighting equipment is solved, and the lighting and heating functions of small power banks are realized to adapt to low-temperature environments.
Patent Information
- Application Number
- CN202420271405.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-02-04
AI Technical Summary
Traditional power banks are large in size and large in capacity, which is inconvenient to carry, and require additional lighting equipment when exploring outdoors.
Design a power bank with lighting function, with built-in cylindrical battery cell, control circuit board, LED lighting circuit board and heating film, and realize lighting and heating functions through charging and discharging heating control circuit and LED control circuit.
It realizes integrated lighting and heating functions in small power banks, reduces the number of devices carried, adapts to low-temperature environments, and provides multiple lighting modes through LED light strips.
Smart Images
Figure CN222464183U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronics, and in particular to a power bank with a lighting function. Background Art
[0002] With the popularity of various portable electrical appliances, many products can be equipped with external charging functions, such as cameras, mobile phones, etc., and many styles of power bank products have also been produced. However, traditional power banks are getting bigger and bigger, and the capacity is getting bigger and bigger, which will increase the burden of carrying, and power banks are limited by environmental restrictions. At the same time, when exploring outdoors, you need to be equipped with various lighting equipment. If the power bank has a lighting function, you can reduce the number of things you carry outdoors and reduce the burden. Utility Model Content
[0003] The utility model provides a power bank with lighting function to solve the above problems.
[0004] The utility model is realized by the following technical solutions:
[0005] A power bank with lighting function, comprising a shell, wherein a cylindrical battery cell, a control circuit board, an LED light circuit board and a heating film are arranged in the shell, wherein the heating film is coated on the outside of the battery cell, a temperature sensor is arranged on the surface of the battery cell, a charge-discharge heating control circuit is arranged on the control circuit board, a first through hole is arranged through the side wall of the shell, a charge-discharge interface is installed in the first through hole, an external device is connected to the battery cell through the charge-discharge interface and the charge-discharge heating control circuit in sequence, and the charge-discharge heating control circuit is also electrically connected to the temperature sensor and the heating film respectively;
[0006] An LED light strip is arranged on the LED light circuit board, and an LED control circuit for controlling the switch of the LED light strip is also arranged on the LED light circuit board. The LED light strip is embedded in the side wall of the shell, and a second through hole suitable for the first switch S1 to pass through is also arranged through the side wall of the shell. The first switch S1 is electrically connected to the LED light strip through the LED control circuit.
[0007] As an optimization, the charge and discharge heating control circuit includes a battery management system, a charge and discharge detection circuit and a heating film control circuit, wherein the battery management system is bidirectionally electrically connected to the battery cell, and the output end of the battery management system is electrically connected to the heating film PTC through the heating film control circuit, the output end of the battery management system is also electrically connected to the LED light strip through the LED control circuit, the input end of the battery management system is also connected to a temperature sensor, and the battery management system is also connected to an external device through the charge and discharge detection circuit, and the charge and discharge detection circuit is used to detect whether the external device is a charging device or a power-consuming device.
[0008] As an optimization, the heating film control circuit includes a first resistor R1, a second resistor R2, and an NPN field effect transistor M1. The input end of the battery management system is connected to the temperature sensor, the CT1 end of the battery management system is connected to the source of the NPN field effect transistor M1 through the second resistor R2 in series, the drain of the NPN field effect transistor M1 is connected to one end of the heating film, the gate of the NPN field effect transistor M1 is connected to the other end of the heating film through the first resistor R1 in series, and the other end of the heating film is connected to the VCC power supply.
[0009] As an optimization, the charge and discharge detection circuit includes a second chip U2, a third chip U3 and a charge and discharge interface, the model of the second chip U2 is LDR6035, the model of the third chip U3 is CT6551, wherein the GND pin of the second chip U2 is grounded, the VDD pin of the second chip U2 is connected to the VCC3 power supply, the CC1 port and the CC2 port of the charge and discharge interface are respectively connected to the CC1 pin and the CC2 pin of the second chip U2, the VBUS port of the charge and discharge interface is the VBUS pin of the third chip U3, and the ID pin and the DET pin of the second chip U2 are respectively connected to the The ID pin and the DET pin are connected, the key pin of the third chip U3 is grounded by connecting the second switch S2 in series, and the LX pin and the BAT pin of the third chip U3 are connected to the battery cell by connecting the battery management system, the PGND pin of the third chip U3 is grounded, and a second polarized capacitor Cb2 is connected in series between the LX pin and the BAT pin of the third chip U3 and the PGND pin of the third chip U3, and the positive electrode of the second polarized capacitor Cb2 is grounded, the LX pin and the BAT pin of the third chip U3 are also grounded by connecting the first polarized capacitor Cb1 in series, and the positive electrode of the first polarized capacitor Cb1 is grounded.
[0010] As an optimization, the LED control circuit includes a first chip U1, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a first switch S1 and an Nmos tube Q1, the first capacitor C1 and the second capacitor C2 are arranged in parallel to form a first parallel link, and the two ends of the first parallel link are respectively connected to the VDD pin and the GND pin of the first chip U1, and the VDD pin of the first chip U1 is connected to the positive electrode of the 3.7V power supply, the GND pin of the first chip U1 is grounded, and the battery management system is connected to the first The LT pin of the first chip U1 is connected, the key pin of the first chip U1 is grounded by connecting the first switch S1 in series, and the 5 pin of the first chip U1 is connected to the gate of the Nmos tube Q1 by connecting the fourth resistor R4 in series, the third resistor R3 is connected in series between the gate of the Nmos tube Q1 and the source of the Nmos tube Q1, and the source of the Nmos tube Q1 is grounded, the drain of the Nmos tube Q1 is connected to the cathode of the LED light strip, and the anode of the LED light strip is connected to the VDD power supply by connecting the sixth resistor R6 in series.
[0011] As an optimization, the battery cells are provided in plurality, and the plurality of battery cells are stacked and fixedly arranged in the form of n*m.
[0012] As an optimization, the housing includes an upper housing and a lower housing, and the upper housing and the lower housing are fixedly connected by screws.
[0013] As an optimization, waterproof glue is applied to the joints between the upper shell and the lower shell.
[0014] As an optimization, a transparent lampshade is further included, wherein the lampshade is fixedly connected to the side wall of the shell, and the LED light strip is located inside the lampshade.
[0015] As an optimization, the shell is made of plastic.
[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0017] The power bank of the utility model has a built-in heating function and can be used in a low-temperature environment.
[0018] The input and output of the power bank of the utility model share one interface (charging and discharging interface), and the internal detection circuit can determine whether the connected power adapter or the electrical appliance is connected.
[0019] The power bank of the utility model is provided with an LED light belt and has a lighting function. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:
[0021] Figure 1 This is a schematic diagram of the exploded structure of a power bank with lighting function described in the utility model;
[0022] Figure 2 for Figure 1 A schematic diagram of the assembled structure of a power bank with lighting function;
[0023] Figure 3 This is a circuit diagram of a power bank with lighting function described in the utility model;
[0024] Figure 4 It is a circuit diagram of a heating film control circuit;
[0025] Figure 5 It is a circuit diagram of a charge and discharge detection circuit;
[0026] Figure 6 Schematic diagram of the LED control circuit.
[0027] Marks and corresponding parts names in the attached drawings:
[0028] 1-lower shell, 2-circuit board, 3-battery cell, 4-upper shell, 5-heating film, 6-lamp cover, 7-LED light strip, 8-charging and discharging interface, a-battery management system, b-heating film control circuit, c-temperature and humidity sensor, d-LED control circuit, e-charging and discharging detection circuit, f-charger, g-electrical appliances. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0030] This embodiment 1 provides a power bank with lighting function, such as Figure 1-Figure 2 As shown, it includes a shell, in which a cylindrical battery cell 3, a control circuit board 2, an LED light circuit board and a heating film 5 are arranged. The shell can be made of plastic, or other hard waterproof materials. The battery cell 3, the control circuit board 2 and the LED light circuit board are fixed in the shell.
[0031] like Figure 1As shown, the heating film 5 is coated on the outside of the battery cell 3. A plurality of battery cells 3 can be provided. The plurality of battery cells 3 are arranged in series, and the plurality of battery cells 3 are stacked together in the form of n*m. At this time, the heating film 5 is coated on the outside of the battery cells 3 which are stacked to form a whole. As for how to fix the battery cells 3, those skilled in the art can fix them by existing technologies, which will not be elaborated here.
[0032] By connecting the cells in series, the power bank can have a larger power usage while being smaller in size. For example, the cells can be connected in series to form a 14500mA battery.
[0033] A temperature sensor c is arranged on the surface of the battery cell 3. The temperature sensor c can be arranged as a patch-type temperature sensor c and is arranged on the surface of the battery cell 3 in a pasted form. If multiple battery cells 3 are stacked together, then the temperature sensor c can be arranged in the space formed by the stacking of multiple battery cells 3.
[0034] The housing includes an upper housing 4 and a lower housing 1, and the upper housing 4 and the lower housing 1 are fixedly connected by screws. Of course, they can also be fixedly connected by other existing methods. The joint of the upper housing 4 and the lower housing 1 is coated with waterproof glue, which can make the power bank more waterproof.
[0035] like Figure 3 As shown, the control circuit board 2 is provided with a charge-discharge heating control circuit, a first through hole is provided through the side wall of the shell, a charge-discharge interface 8 is installed in the first through hole, and an external device is connected to the battery cell 3 through the charge-discharge interface 8 and the charge-discharge heating control circuit in sequence, and the charge-discharge heating control circuit is also electrically connected to the temperature sensor c and the heating film 5 respectively;
[0036] More specifically, the charging and discharging heating control circuit includes a battery management system a, a charging and discharging detection circuit e and a heating film control circuit b, wherein the battery management system a is bidirectionally electrically connected to the battery cell 3, and the output end of the battery management system a is electrically connected to the heating film 5PTC through the heating film control circuit b, the output end of the battery management system a is also electrically connected to the LED light strip 7 through the LED control circuit D, the input end of the battery management system a is also connected to the temperature sensor c, and the battery management system a is also connected to an external device through the charging and discharging detection circuit e, and the charging and discharging detection circuit e is used to detect whether the external device is a charging device or a power-consuming device.
[0037] The charging and discharging interface is a Type C interface, which has waterproof function itself.
[0038] like Figure 4As shown, the heating film control circuit b includes a first resistor R1, a second resistor R2, and an NPN field effect transistor M1. The input end of the battery management system a is connected to the temperature sensor c. The CT1 end of the battery management system a is connected to the source of the NPN field effect transistor M1 through the second resistor R2 in series. The drain of the NPN field effect transistor M1 is connected to one end of the heating film. The gate of the NPN field effect transistor M1 is connected to the other end of the heating film through the first resistor R1 in series, and the other end of the heating film 5 is connected to the VCC power supply. The battery management system a is BMS, and the heating film 5 is Figure 4 The VCC power supply is the power supply of the battery cell, but it is usually used for the heating film after voltage stabilization and rectification.
[0039] The temperature sensor c is arranged at the battery cell 3. After the battery management system a detects the temperature at the battery cell 3, it determines whether it is necessary to connect the heating film 5 circuit to heat the battery cell 3 according to the temperature (this is the function of the battery management system aBMS itself and will not be described in detail here); when the collected temperature is less than 2 degrees (the specific threshold temperature can be set according to the actual situation), the heating film control circuit b is connected to heat the battery cell 3. When the collected temperature is ≥10 degrees (the specific threshold temperature can be set according to the actual situation), the heating film 5 stops working, the power bank discharges normally, and the problem of itself is improved through self-heating, so that the power bank can still work normally in a severe cold environment.
[0040] Temperature sensor c Figure 4 T1 in the figure. Battery management system a ( Figure 4 Li Protection in the circuit detects the temperature T1 to complete the pull-down control of CT1. When CT1=GND, the heating film 5 works.
[0041] like Figure 5As shown, the charge and discharge detection circuit e includes a second chip U2, a third chip U3 and a charge and discharge interface 8, the model of the second chip U2 is LDR6035, the model of the third chip U3 is CT6551, wherein the GND pin of the second chip U2 is grounded, the VDD pin of the second chip U2 is connected to the VCC3 power supply (battery power supply, but generally it will be used by the chip after voltage stabilization and rectification), the CC1 port and CC2 port of the charge and discharge interface 8 are respectively connected to the CC1 pin and CC2 pin of the second chip U2, the VBUS port of the charge and discharge interface 8 is the VBUS pin of the third chip U3, the ID pin and DET pin of the second chip U2 are connected to the VBUS pin of the third chip U3, and the ID pin and DET pin of the second chip U2 are connected to the VBUS pin of the third chip U3. The pins are respectively connected to the ID pin and the DET pin of the third chip U3, the key pin of the third chip U3 is grounded by being connected in series with the second switch S2, and the LX pin and the BAT pin of the third chip U3 are connected to the battery cell 3 by connecting the battery management system a, the PGND pin of the third chip U3 is grounded, and a second polarized capacitor Cb2 is connected in series between the LX pin and the BAT pin of the third chip U3 and the PGND pin of the third chip U3, and the positive electrode of the second polarized capacitor Cb2 is grounded, the LX pin and the BAT pin of the third chip U3 are also grounded by being connected in series with the first polarized capacitor Cb1, and the positive electrode of the first polarized capacitor Cb1 is grounded.
[0042] The power bank uses the LDR6035 chip, which has a mobile phone / charger input detection function. When the device is connected through the typeC interface (charging and discharging interface 8), the device can be identified through CC communication. When a mobile phone is connected, CC identifies it as a sink plug-in, then discharge to charge the mobile phone; when an adapter is connected, CC identifies it as a source plug-in, then receive power from the adapter. Currently, charging uses the PD protocol. In the PD protocol, devices can be identified through CC communication. When a mobile phone is connected, CC identifies it as a sink plug-in, then discharge to charge the mobile phone; when an adapter is connected, CC identifies it as a source plug-in, then receive power from the adapter.
[0043] When a mobile phone is inserted, ID output is 1. When the inserted device is a charger f, DET output is 1. In this way, CT6551 judges the information and adjusts the working mode of the power bank to charging or discharging.
[0044] This is a function that the chip itself has and does not involve any improvement to the computer program.
[0045] Therefore, the input and output ports of the power bank of the present invention are the same interface (that is, the charging and discharging interface 8, the TYPEC interface in the figure), which can improve the sealing of the power bank. There is a detection circuit inside the power bank, which can detect whether the charger f or the electrical appliance g is connected to the interface, and then convert it internally to connect the battery cell 3 to the charging circuit or the discharging circuit.
[0046] An LED light strip 7 is arranged on the LED light circuit board, and an LED control circuit D for controlling the switch of the LED light strip 7 is also arranged on the LED light circuit board. The LED light strip 7 is embedded in the side wall of the shell, and a second through hole suitable for the first switch S1 to pass through is also arranged through the side wall of the shell. The first switch S1 is electrically connected to the LED light strip 7 through the LED control circuit D.
[0047] A "∩"-shaped waterproof cover made of soft material and a transparent lampshade 6, the outer wall of the waterproof cover is fixedly connected to the inner wall of the second through hole, the first switch passing through the second through hole is located on the inner side of the waterproof cover, the lampshade 6 is fixedly connected to the side wall of the shell, and the LED light strip 7 is located inside the lampshade 6.
[0048] By providing the waterproof cover and the lampshade 6 , it is possible to prevent external water from entering the power bank through the first switch and the LED light strip 7 .
[0049] like Figure 6As shown, the LED control circuit D includes a first chip U1, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a first switch S1 and an Nmos tube Q1, the first capacitor C1 and the second capacitor C2 are arranged in parallel to form a first parallel link, and the two ends of the first parallel link are respectively connected to the VDD pin and the GND pin of the first chip U1, and the VDD pin of the first chip U1 is connected to the positive electrode of the 3.7V power supply (battery cell, for powering the first chip), the GND pin of the first chip U1 is grounded, and the battery management system a is connected to the LT pin of the first chip U1, the key pin of the first chip U1 is connected to the ground through the first switch S1 in series, and the 5 pin of the first chip U1 is connected to the gate of the Nmos tube Q1 through the fourth resistor R4 in series, the third resistor R3 is connected in series between the gate of the Nmos tube Q1 and the source of the Nmos tube Q1, and the source of the Nmos tube Q1 is grounded, the drain of the Nmos tube Q1 is connected to the cathode of the LED light strip 7, and the anode of the LED light strip 7 is connected to the VDD power supply through the sixth resistor R6 in series. The IN1 pin is used to receive an external input signal. A switch is connected here, and the signal of the switch can be detected. The control end of the switch is connected to the IN1 pin, the power supply end of the switch is connected to the VDD power supply (battery cell) through the fifth resistor R5 in series, and the ground end of the switch is grounded, and a third capacitor C30 is provided between the ground end and the power supply end. The switch is the start-stop switch of the LED light strip.
[0050] Pin 5 is an output pin, which is used to output the signal processed inside the chip. A transistor is connected here to control the indicator light.
[0051] The light control chip adopts SOP-8. The first switch S1 is a light button. When the light button is pressed for the first time, the current power status is displayed. When the light button is pressed for the second time, the LED light strip 7 is always on and can be used as an outdoor power supply. When the light button is pressed for the third time, the LED light flashes and changes to red for emergency rescue. It can be used as an SOS emergency light. When the light button is pressed for the fourth time, the LED light goes out and enters sleep mode.
[0052] Specifically, the LED driver chip (light control chip) can display the current capacity value of the battery cell 3 according to the signal sent by the battery management system a. At the same time, the LED driver chip can also collect the light switching switch to determine the light mode to be displayed. When charging, the LED light strip 7 will be displayed as the number of power grids, and the light will be dim to indicate the current charging status of the battery. At the same time, the light strip will also display in a breathing shape; when the power bank is being discharged, the LED light strip 7 will measure and display the current power when it is first connected to the electrical appliance g; when the light button is pressed for the first time, the current power status is displayed. When the light button is pressed for the second time, the LED light strip 7 is always on and can be used as an outdoor power source. When the light button is pressed for the third time, the LED light flashes and changes to red for emergency rescue. It can be used as an SOS emergency light. When the light button is pressed for the fourth time, the LED light goes out and enters sleep mode; the time interval between each press of the switch button is within 10s. If the interval is greater than 10s, the switching sequence will switch to the state of the first press and cycle again.
[0053] This is a function of the chip and does not involve improvements to the computer program.
[0054] All components are installed inside the shell. The control circuit board has the functions of charging and discharging the power bank and battery management. The battery cell serves as an energy storage unit for electric energy. The battery cell heating film can heat the battery cell as needed. The lampshade can gather the light beam so that it can be evenly and softly diverged outward. The LED lighting circuit board is the main luminous component. The light switching switch can switch to different lights by pressing a button. The charging and discharging output port can charge the power bank and discharge electrical appliances.
[0055] The power bank uses small cylindrical batteries, so it is very small in size. It can be equipped with any common mini camera waterproof shells on the market. With the waterproof shell, it can go anywhere with the carrier. It also has the function of heating the battery. When the ambient temperature is low enough to where the battery discharge capacity is very poor, it will detect the battery temperature and start the heating film to heat the battery, so that the battery reaches a suitable working temperature and improves the discharge efficiency. At the same time, it can also be used as a backup lighting power supply. The externally set button can realize different lighting operations by switching the button, which can realize lighting, SOS signal, battery SOC display status, charging status and other light displays.
[0056] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A power bank with lighting function, characterized in that: The invention comprises a shell, wherein a cylindrical battery cell, a control circuit board, an LED light circuit board and a heating film are arranged in the shell, wherein the heating film is coated on the outside of the battery cell, a temperature sensor is arranged on the surface of the battery cell, a charge-discharge heating control circuit is arranged on the control circuit board, a first through hole is arranged through the side wall of the shell, a charge-discharge interface is installed in the first through hole, an external device is connected to the battery cell through the charge-discharge interface and the charge-discharge heating control circuit in sequence, and the charge-discharge heating control circuit is also electrically connected to the temperature sensor and the heating film respectively; An LED light strip is arranged on the LED light circuit board, and an LED control circuit for controlling the switch of the LED light strip is also arranged on the LED light circuit board. The LED light strip is embedded in the side wall of the shell, and a second through hole suitable for the first switch S1 to pass through is also arranged through the side wall of the shell. The first switch S1 is electrically connected to the LED light strip through the LED control circuit.
2. The power bank with lighting function according to claim 1, characterized in that: The charge and discharge heating control circuit includes a battery management system, a charge and discharge detection circuit and a heating film control circuit, wherein the battery management system is bidirectionally electrically connected to the battery cell, and the output end of the battery management system is electrically connected to the heating film PTC through the heating film control circuit, the output end of the battery management system is also electrically connected to the LED light strip through the LED control circuit, the input end of the battery management system is also connected to a temperature sensor, and the battery management system is also connected to an external device through the charge and discharge detection circuit, and the charge and discharge detection circuit is used to detect whether the external device is a charging device or a power-consuming device.
3. The power bank with lighting function according to claim 2, characterized in that: The heating film control circuit includes a first resistor R1, a second resistor R2, and an NPN field effect transistor M1. The input end of the battery management system is connected to the temperature sensor. The CT1 end of the battery management system is connected to the source of the NPN field effect transistor M1 by connecting the second resistor R2 in series. The drain of the NPN field effect transistor M1 is connected to one end of the heating film. The gate of the NPN field effect transistor M1 is connected to the other end of the heating film by connecting the first resistor R1 in series, and the other end of the heating film is connected to the VCC power supply.
4. The power bank with lighting function according to claim 2, characterized in that: The charge and discharge detection circuit includes a second chip U2, a third chip U3 and a charge and discharge interface, the model of the second chip U2 is LDR6035, the model of the third chip U3 is CT6551, wherein the GND pin of the second chip U2 is grounded, the VDD pin of the second chip U2 is connected to the VCC3 power supply, the CC1 port and the CC2 port of the charge and discharge interface are respectively connected to the CC1 pin and the CC2 pin of the second chip U2, the VBUS port of the charge and discharge interface is the VBUS pin of the third chip U3, and the ID pin and the DET pin of the second chip U2 are respectively connected to the ID pin of the third chip U3. The key pin of the third chip U3 is connected to the DET pin, the key pin of the third chip U3 is grounded by connecting the second switch S2 in series, and the LX pin and the BAT pin of the third chip U3 are connected to the battery cell by connecting the battery management system, the PGND pin of the third chip U3 is grounded, and a second polarized capacitor Cb2 is connected in series between the LX pin and the BAT pin of the third chip U3 and the PGND pin of the third chip U3, and the positive electrode of the second polarized capacitor Cb2 is grounded, the LX pin and the BAT pin of the third chip U3 are also grounded by connecting the first polarized capacitor Cb1 in series, and the positive electrode of the first polarized capacitor Cb1 is grounded.
5. The power bank with lighting function according to claim 2, characterized in that: The LED control circuit includes a first chip U1, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a first switch S1 and an Nmos tube Q1. The first capacitor C1 and the second capacitor C2 are arranged in parallel to form a first parallel link, and the two ends of the first parallel link are respectively connected to the VDD pin and the GND pin of the first chip U1, and the VDD pin of the first chip U1 is connected to the positive electrode of the 3.7V power supply, the GND pin of the first chip U1 is grounded, the battery management system is connected to the LT pin of the first chip U1, the key pin of the first chip U1 is grounded by connecting the first switch S1 in series, and the 5 pin of the first chip U1 is connected to the gate of the Nmos tube Q1 by connecting the fourth resistor R4 in series, the third resistor R3 is connected in series between the gate of the Nmos tube Q1 and the source of the Nmos tube Q1, and the source of the Nmos tube Q1 is grounded, the drain of the Nmos tube Q1 is connected to the cathode of the LED light strip, and the anode of the LED light strip is connected to the VDD power supply by connecting the sixth resistor R6 in series.
6. The power bank with lighting function according to claim 1, characterized in that: The battery cells are provided in plurality, and the plurality of battery cells are stacked and fixedly arranged in the form of n*m.
7. The power bank with lighting function according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing, and the upper housing and the lower housing are fixedly connected by screws.
8. The power bank with lighting function according to claim 7, characterized in that: The joint of the upper shell and the lower shell is coated with waterproof glue.
9. The power bank with lighting function according to claim 1, characterized in that: It also includes a transparent lampshade, which is fixedly connected to the side wall of the shell, and the LED light strip is located in the lampshade.
10. The power bank with lighting function according to claim 1, characterized in that: The shell is made of plastic.