Multifunctional power bank

Abstract

The present application relates to the technical field of mobile power supplies, and discloses a multifunctional power bank. The multifunctional power bank comprises a housing; a battery pack, a charging / discharging control circuit, and a laser drive circuit are provided inside the housing; a cigarette lighter port and a cigarette lighter cavity are provided on the housing; a semiconductor laser is provided inside the cigarette lighter cavity; window glass is provided between the semiconductor laser and the cigarette lighter port; a laser press switch is provided on the housing; the battery pack is electrically connected to the charging / discharging control circuit, the charging / discharging control circuit is electrically connected to the laser press switch, the laser press switch is electrically connected to the laser drive circuit, and the laser drive circuit is electrically connected to the semiconductor laser; the charging / discharging circuit comprises a mobile power supply charging / discharging chip, and the mobile power supply charging / discharging chip is separately electrically connected to the charging / discharging circuit and a status lamp display circuit. The stable operation of the semiconductor laser can be ensured, and the problem of poor operation stability of existing laser cigarette lighters integrated in power banks is solved.

Description

Multifunctional power bank

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to the Chinese patent application No. 202421738809.X, filed on July 22, 2024, and entitled "Multifunctional power bank", the entire content of which is incorporated herein by reference and forms a part of the present disclosure for all purposes. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of mobile power supply, and in particular to a multifunctional power bank. BACKGROUND

[0004] The statements herein are provided only to enhance understanding of the present disclosure and are not necessarily intended to constitute the prior art.

[0005] With the development of technology, electronic devices such as smart phones, tablet computers and the like have become more and more important in daily life. In order to meet the needs of users to charge electronic devices, portable power banks have also developed rapidly. At the same time, in order to meet the needs of users for more daily use, a cigarette lighter is integrated on the portable power bank to provide users with convenient cigarette lighting function.

[0006] However, the existing portable power bank mostly integrates a resistance type cigarette lighter, which has a short service life and is easy to be damaged. In addition, the charge and discharge control circuit in the existing power bank is easily disturbed by the outside world, and has poor ability to output large current instantaneously and constantly, which leads to the inability of the cigarette lighter to start with constant current, poor running stability, and affects the user's experience.

[0007] In the utility model patent with the application number 201821248286.5, a power bank cigarette lighter is disclosed, but it directly uses a lithium battery to directly power the cigarette lighter, and controls the on-off between the cigarette lighter and the lithium battery through two light touch switches. During use, it is easy to overcharge and overdischarge, and it cannot guarantee the stable output of constant current. SUMMARY

[0008] In view of the deficiencies of the prior art, the purpose of the embodiments of the present disclosure is to provide a multifunctional power bank, which uses a laser cigarette lighter to replace a resistance type cigarette lighter, prolongs the service life of the cigarette lighter, and improves the user's experience by improving the charge and discharge control circuit to stably output constant current to power the laser cigarette lighter and ensure the stability of the laser intensity.

[0009] In order to achieve the above-mentioned purpose, the embodiments of the present disclosure provide the following technical solutions:

[0010] The utility model provides a multifunctional power bank, including the casing, be internally provided with battery group, charge and discharge control circuit and laser drive circuit in the casing, be provided with cigarette lighter port and cigarette lighter cavity on the casing, be internally provided with semiconductor laser in the cigarette lighter cavity, be provided with window glass between semiconductor laser and cigarette lighter port, be provided with laser press switch on the casing,

[0011] Battery group with charge and discharge control circuit electricity is connected, charge and discharge control circuit with laser press switch electricity is connected, laser press switch with laser drive circuit electricity is connected, laser drive circuit with semiconductor laser electricity is connected,

[0012] Wherein, the charge and discharge circuit includes mobile power supply charge and discharge chip, and the mobile power supply charge and discharge chip is electrically connected with the charge and discharge circuit and the state lamp display circuit respectively.

[0013] In some embodiments, the mobile power supply charge and discharge chip is ETA9741 chip.

[0014] In some embodiments, the charge and discharge circuit includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor and a first inductor.

[0015] The battery group is electrically connected with the mobile power supply charge and discharge chip, the seventh pin of the mobile power supply charge and discharge chip is electrically connected with the first end of the laser press switch and the fourth capacitor, the fifth capacitor and the sixth capacitor in parallel, and the second end of the laser press switch is electrically connected with the laser drive circuit.

[0016] The first end of the first inductor is electrically connected with the first pin of the mobile power supply charge and discharge chip, and the second end of the first inductor is electrically connected with the first capacitor, the second capacitor and the third capacitor in parallel.

[0017] In some embodiments, the first capacitor, the second capacitor and the third capacitor in parallel are grounded, and the fourth capacitor, the fifth capacitor and the sixth capacitor in parallel are grounded.

[0018] In some embodiments, the state lamp display circuit includes a first diode, a second diode, a third diode, a fourth diode and a first resistor.

[0019] The second pin of the mobile power supply charge-discharge chip is electrically connected with the first diode and the second diode in parallel, the third pin of the mobile power supply charge-discharge chip is electrically connected with the third diode and the fourth diode in parallel, the first diode and the second diode in parallel and the third diode and the fourth diode in parallel are respectively electrically connected with the first resistor, and the first resistor is electrically connected with the fourth pin of the mobile power supply charge-discharge chip.

[0020] In some embodiments, a plurality of light holes are formed in the shell, and the first diode, the second diode, the third diode and the fourth diode are located below the light holes.

[0021] In some embodiments, an aspheric convex lens is arranged above the semiconductor laser.

[0022] In some embodiments, a flip cover is further included, one side of the flip cover is hingedly connected with a connecting rod, the laser pressing switch is located on one side of the shell, the connecting rod is vertically arranged on the pressing switch, and the flip cover covers the cigarette lighter.

[0023] In some embodiments, a receiving groove is formed in the other end of the shell, and a metal window breaker and a safety belt cutter are placed in the receiving groove.

[0024] The technical scheme provided by the disclosure has at least the following technical effects or advantages:

[0025] 1. The technical scheme provided by the disclosure integrates the semiconductor laser cigarette lighter in the portable power bank, the user can charge the mobile phone and other electronic devices through the charging interface of the power bank, and can also realize the cigarette lighter function through the semiconductor laser cigarette lighter. The user does not need to carry an additional power supply for the semiconductor laser cigarette lighter, but only needs to carry a power bank to meet the needs of charging the electronic device and lighting the cigarette. Compared with the common resistance type cigarette lighter, the laser cigarette lighter has strong stability and long service life.

[0026] 2. The technical scheme provided by the disclosure improves the charge-discharge control circuit to ensure the stable operation of the semiconductor laser cigarette lighter. The battery pack outputs a constant large current through the charge-discharge control circuit to supply power to the semiconductor laser cigarette lighter, so that the output laser intensity is stable, the tobacco is successfully ignited, and the user's experience is ensured.

[0027] 3. The technical scheme provided by the disclosure adopts a flip cover structure for the laser cigarette lighter, which is opened when lighting the cigarette and closed when not lighting the cigarette, which can effectively prevent the leakage of laser.

[0028] 4、The technical scheme provided by the present disclosure improves the charge-discharge control circuit, respectively sets capacitors for decoupling, filtering high-frequency noise and reducing output pin noise, reduces the influence of other factors on the power supply of the semiconductor laser, so that the battery pack outputs a constant size of large current through the charge-discharge control circuit, and guarantees the stable operation of the semiconductor laser. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings accompanying the specification of the present disclosure serve to provide further understanding of the present disclosure, and the illustrative embodiments of the present disclosure and the description thereof are used to explain the present disclosure, and do not constitute an improper limitation on the present disclosure.

[0030] Fig. 1 is a structural schematic diagram of a multifunctional power bank provided by an embodiment of the present disclosure;

[0031] Fig. 2 is a circuit architecture schematic diagram of a multifunctional power bank provided by an embodiment of the present disclosure;

[0032] Fig. 3 is a circuit schematic diagram of a charge-discharge control circuit provided by an embodiment of the present disclosure;

[0033] In the figure: 1, housing; 2, cigarette lighter; 3, cigarette lighter cavity; 4, USB interface; 5, flip cover.

[0034] The mutual distance or size is exaggerated for showing the position of each part, and the schematic diagram is only used for illustration. DETAILED DESCRIPTION

[0035] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used in the present disclosure have the same meaning as generally understood by those skilled in the art to which the present disclosure belongs.

[0036] Embodiment one

[0037] As introduced in the background, the existing integrated cigarette lighter power bank cannot provide a constant size of stable large current for the operation of the cigarette lighter, which affects the stable operation of the cigarette lighter. In order to solve the above technical problems, the present disclosure provides a multifunctional power bank.

[0038] In combination with Figs. 1-3, the multifunctional power bank includes a shell 1, a battery pack and a circuit board are mounted in the shell 1, a charge-discharge control circuit and a laser drive circuit are welded on the circuit board, a cigarette cavity 3 is formed on one side of the shell 1, a cigarette hole 2 is formed at the end of the cigarette cavity 3, a semiconductor laser is fixed in the cigarette cavity 3 by a vertically arranged laser support, a window glass is horizontally mounted between the semiconductor laser and the cigarette hole 2, a non-spherical convex lens for focusing is horizontally mounted above the semiconductor laser, the laser emitted by the semiconductor laser is focused and directed to the window glass, and the laser can be emitted to the cigarette through the window glass, the cigarette can be heated to a high temperature state in a short time by absorbing the laser, and the cigarette lighting function is realized; a heat sink for heat dissipation is mounted below the semiconductor laser.

[0039] Here, the heat sink is a heat sink, the semiconductor laser, the heat sink, the laser drive circuit, the cigarette hole 2, the cigarette cavity 3, the window glass and the non-spherical convex lens form a semiconductor laser cigarette lighter.

[0040] A laser press switch is mounted on the shell 1, the battery pack is electrically connected with the charge-discharge control circuit, the charge-discharge control circuit is electrically connected with the laser press switch, the laser press switch is electrically connected with the laser drive circuit, and the laser drive circuit is electrically connected with the semiconductor laser; when in use, the laser press switch is pressed, the battery pack, the charge-discharge control circuit, the laser drive circuit and the semiconductor laser form a conduction circuit, the battery pack outputs a large constant current to the laser drive circuit through the charge-discharge control circuit, and the semiconductor laser is powered by the laser drive circuit to work normally.

[0041] As an embodiment, as shown in Fig. 3, the charge-discharge control circuit includes a mobile power supply charge-discharge chip U3, the mobile power supply charge-discharge chip U3 is electrically connected with a charge-discharge circuit and a state lamp display circuit respectively, the state lamp display circuit includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4 and a first resistor R1, and the charge-discharge circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a first inductor L1.

[0042] The second pin LED1 of the mobile power supply charge-discharge chip U3 is electrically connected with the parallelly connected first diode D1 and second diode D2, the third pin LED2 of the mobile power supply charge-discharge chip U3 is electrically connected with the parallelly connected third diode D3 and fourth diode D4, the parallelly connected first diode D1 and second diode D2 and the parallelly connected third diode D3 and fourth diode D4 are respectively electrically connected with the first end of the first resistor R1, and the second end of the first resistor R1 is electrically connected with the fourth pin LED3 of the mobile power supply charge-discharge chip U3.

[0043] The positive terminal of the battery pack is electrically connected with the sixth pin BAT of the mobile power charging and discharging chip U3, and the negative terminal of the battery pack is grounded; the first end of the first inductor L1 is electrically connected with the first pin of the mobile power charging and discharging chip U3, and the second end of the first inductor L1 is respectively electrically connected with the first end of the first capacitor C1, the first end of the second capacitor C2 and the first end of the third capacitor C3, and the second end of the first capacitor C1, the second end of the second capacitor C2 and the second end of the third capacitor C3 are respectively grounded; the second end of the first inductor L1 is electrically connected with the sixth pin BAT of the mobile power charging and discharging chip U3.

[0044] The first end of the fourth capacitor C4, the first end of the fifth capacitor C5 and the first end of the sixth capacitor C6 are connected in parallel and electrically connected with the seventh pin OUT of the mobile power charging and discharging chip U3, and the second end of the fourth capacitor C4, the second end of the fifth capacitor C5 and the second end of the sixth capacitor C6 are respectively grounded; the first end of the laser pressing switch is electrically connected with the seventh pin OUT of the mobile power charging and discharging chip U3, the second end of the laser pressing switch is electrically connected with the input end of the laser driving circuit, and the output end of the laser driving circuit is electrically connected with the electrode of the semiconductor laser.

[0045] In the embodiment, the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are light-emitting diodes for displaying the power of the power bank, and four light holes are formed on the shell 1, and the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are located below the corresponding light holes. The laser driving circuit is a constant current driving module commonly used in the laser cigarette lighter in the prior art, and the embodiment does not improve it, and will not be described here. The constant current driving module in the authorized announcement No. CN220269436U can be used. The model of the mobile power charging and discharging chip U3 is ETA9741, the first capacitor C1 is a BAT pin decoupling capacitor for decoupling, the second capacitor C2 and the third capacitor C3 are BAT input bypass capacitors for filtering high-frequency noise; the fourth capacitor C4 and the fifth capacitor C5 are output capacitors for reducing output pin noise; the sixth capacitor C6 is an ADC decoupling capacitor of the mobile power charging and discharging chip U3 for decoupling; the first capacitor C1 to the sixth capacitor C6 reduce the disturbance that may exist when the charging and discharging control circuit operates, so as to stably output a constant current; the inductor L1 is used to keep the output current flowing.

[0046] Further, the USB interface 4 is installed on the shell 1, and the USB interface 4 is electrically connected with the seventh pin of the mobile power charging and discharging chip, and the USB interface 4 is used to supply power to other electronic devices.

[0047] The working mode of the embodiment is as follows:

[0048] The user can charge the multifunctional power bank through the USB interface 4, and the USB interface 4 can also power other devices. When the user needs to light a cigarette, the user presses the laser pressing switch, the charging and discharging control circuit detects the external load, enters the discharging mode, the battery pack, the charging and discharging control circuit, the laser driving circuit and the semiconductor laser form a conduction circuit, the battery pack supplies power to the semiconductor laser through the charging and discharging control circuit and the laser driving circuit, and the semiconductor laser works to ignite the tobacco. Here, the charging and discharging control circuit detects the external load and enters the discharging mode, which is the existing function of the charging and discharging control circuit, and the embodiment does not improve it, which will not be described here.

[0049] Further, in order to effectively prevent laser leakage, a flip cover 5 is further included, one side of the flip cover 5 is hinged to one side of the shell 1, the flip cover 5 covers the cigarette lighting port 2, and the other side of the flip cover 5 can be in contact with the top of the shell 1.

[0050] Specifically, a mounting sliding groove is formed on one side of the shell 1, the top and one side of the sliding groove are open; the bottom end of the laser mounting switch is fixed to the bottom of the sliding groove, the pressing end of the laser pressing switch is vertically mounted with a connecting rod, and one side of the flip cover 5 is hinged to the top end of the connecting rod and can rotate along the top end of the connecting rod.

[0051] In use, the flip cover 5 is opened, and after the flip cover 5 is opened, the connecting rod is driven to move downward, the user can press the laser pressing switch to make the battery pack, the charging and discharging control circuit and the laser driving circuit conduct, the laser driving circuit is turned on to drive the semiconductor laser to work to achieve cigarette lighting.

[0052] Embodiment two

[0053] The difference between the embodiment and the embodiment one is that the other end of the shell 1 is provided with a containing groove, and a metal window breaker and a seat belt cutter are placed in the containing groove. On the one hand, the window breaker or the seat belt cutter is convenient to take, and it is avoided that the window breaker or the seat belt cutter cannot be found or occupies the space in the car in an emergency; on the other hand, it provides safety guarantee when going out by car or self-driving, and can be used to break the window and cut the seat belt in case of traffic accident.

[0054] In the embodiment, the metal window breaker is a probe type metal window breaker, which occupies very small space.

[0055] Although the specific embodiments of the disclosure are described above with reference to the drawings, it is not a limitation on the protection scope of the disclosure, and those skilled in the art should understand that various modifications or changes made on the basis of the technical solutions of the disclosure without creative labor are still within the protection scope of the disclosure.

Claims

1. A multi-functional power bank, characterized in that, The device includes a housing, inside which a battery pack, a charging and discharging control circuit, and a laser driving circuit are disposed. The housing has a cigarette lighter socket and a cigarette lighter cavity, inside which a semiconductor laser is disposed. A window glass is disposed between the semiconductor laser and the cigarette lighter socket. A laser push switch is disposed on the housing. The battery pack is electrically connected to the charging and discharging control circuit, the charging and discharging control circuit is electrically connected to the laser push switch, the laser push switch is electrically connected to the laser driving circuit, and the laser driving circuit is electrically connected to the semiconductor laser. The charging and discharging control circuit includes a mobile power bank charging and discharging chip, which is electrically connected to a charging and discharging circuit and a status light display circuit.

2. The multi-functional power bank as described in claim 1, characterized in that, The power bank's charging and discharging chip is an ETA9741 chip.

3. The multi-functional power bank as described in claim 1, characterized in that, The charging and discharging circuit includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, and a first inductor; The battery pack is electrically connected to the mobile power charging and discharging chip. The seventh pin of the mobile power charging and discharging chip is electrically connected to the first terminal of the laser push switch and the fourth, fifth, and sixth capacitors connected in parallel. The second terminal of the laser push switch is electrically connected to the laser driving circuit. The first end of the first inductor is electrically connected to the first pin of the power bank charging and discharging chip, and the second end of the first inductor is electrically connected to the first capacitor, the second capacitor and the third capacitor connected in parallel.

4. The multi-functional power bank as described in claim 3, characterized in that, The first, second, and third capacitors connected in parallel are grounded, and the fourth, fifth, and sixth capacitors connected in parallel are also grounded.

5. The multi-functional power bank as described in claim 1, characterized in that, The status light display circuit includes a first diode, a second diode, a third diode, a fourth diode, and a first resistor; The second pin of the power bank charging and discharging chip is electrically connected to the first diode and the second diode connected in parallel. The third pin of the power bank charging and discharging chip is electrically connected to the third diode and the fourth diode connected in parallel. The first diode and the second diode connected in parallel, as well as the third diode and the fourth diode connected in parallel, are respectively electrically connected to the first resistor. The first resistor is electrically connected to the fourth pin of the power bank charging and discharging chip.

6. The multi-functional power bank as described in claim 5, characterized in that, The housing has multiple light-transmitting holes, and the first diode, the second diode, the third diode, and the fourth diode are located below the light-transmitting holes.

7. The multi-functional power bank as described in claim 1, characterized in that, An aspherical convex lens is disposed above the semiconductor laser.

8. The multi-functional power bank as described in claim 1, characterized in that, It also includes a flip cover, one side of which is hinged to a connecting rod. The laser-activated push switch is located on one side of the housing. The connecting rod is vertically mounted on the push switch. The flip cover covers the cigarette lighter socket.

9. The multi-functional power bank as described in claim 1, characterized in that, The housing is provided with a USB interface, which is electrically connected to the seventh pin of the power bank charging and discharging chip.

10. The multi-functional power bank as described in claim 1, characterized in that, The other end of the housing is provided with a receiving groove, in which a metal window breaker and / or a seat belt cutter are placed.

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