Dual-path power supply circuit and device of integrated power bank
By designing a dual-channel power supply circuit integrated with a power bank, using the voltage mutagenesis module and a power management module, the problem of the camera being unable to shoot for a long time when the power is insufficient is solved, the camera is continuously running under constant power, and it supports power supply in various power modes.
Patent Information
- Application Number
- CN202421572853.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-04
AI Technical Summary
Existing cameras need to shut down and replace the battery when they are low on battery or use a power adapter to charge, which cannot meet the needs of long-term continuous shooting, especially in outdoor scenes where power supply equipment is lacking.
Design a dual-channel power supply circuit that integrates power banks, including voltage mutagenesis module, power management module and power supply interface. The voltage input from external power supply is mutagenic module, and multiple power ports are set on the power management module to support three power supply methods: battery, power adapter and power bank.
It realizes the camera continuously running with constant power, meets the long-term shooting needs of outdoor scenes, and supports three power supply methods, improving the flexibility and convenience of the equipment.
Smart Images
Figure CN222839447U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power supply for electronic equipment, in particular to a dual-circuit power supply circuit and device integrated with a power bank. Background Art
[0002] When the battery is low during use, you usually need to turn off the camera and replace the battery, or use a dedicated power adapter to charge it.
[0003] However, the camera needs to be turned off before the battery can be replaced, which makes it unsuitable for scenes that require long-term continuous shooting. At the same time, since outdoor scenes usually do not have power equipment, the method of charging with a power adapter cannot meet the long-term shooting requirements of outdoor scenes. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a dual-circuit power supply circuit and device integrated with a power bank, so that a camera can continue to operate without power failure.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A dual-circuit power supply circuit of an integrated power bank comprises a voltage mutation module, a power management module and a power supply interface; the power supply interface is used to connect to an external power supply; the power management module comprises a first power supply terminal, a second power supply terminal, a third power supply terminal and an output terminal, and the output terminal is used to supply power to the outside; the first power supply terminal is connected to the output terminal of the voltage mutation module; the second power supply terminal is used to connect to a battery; the third power supply terminal is used to connect to a power adapter; the input terminal of the voltage mutation module is connected to the external power supply through the power supply interface.
[0007] Furthermore, the first power supply terminal is unidirectionally connected to the second power supply terminal, and the direction is from the first power supply terminal to the second power supply terminal.
[0008] Furthermore, the voltage mutagenesis module includes a TYPE-C access unit, a voltage mutagenesis chip, a switching regulator and a switch unit; the input end of the TYPE-C access unit is connected to the external power supply; the output end of the TYPE-C access unit is respectively connected to the input end of the switching regulator and the input end of the switch unit; the output end of the switching regulator is connected to the power input end of the voltage mutagenesis chip; the enable end of the voltage mutagenesis chip is connected to the control input end of the switch unit; the output end of the switch unit is connected to the first power end of the power management module.
[0009] Furthermore, the switch unit includes a MOS chip and an NMOS tube; the source of the MOS chip is connected to the power output end of the TYPE-C access unit; the gate of the MOS chip is connected to the drain of the NMOS tube; the drain of the MOS chip is connected to the first power end of the power management module; the gate of the NMOS tube is connected to the enable end of the voltage mutagenesis chip; and the source of the NMOS tube is grounded.
[0010] Furthermore, the switch unit further includes a first resistor; one end of the first resistor is connected to the source of the MOS chip; and the other end of the first resistor is connected to the gate of the MOS chip.
[0011] Furthermore, the switch unit also includes a second resistor; one end of the second resistor is connected to the gate of the MOS chip; and the other end of the second resistor is connected to the drain of the NMOS tube.
[0012] Furthermore, the switching unit also includes a third resistor, a fourth resistor and a first capacitor; one end of the third resistor is connected to the drain of the MOS chip; the other end of the third resistor is respectively connected to one end of the fourth resistor, one end of the first capacitor and the reference voltage end of the voltage mutagenesis chip; the other end of the fourth resistor is connected to the other end of the first capacitor and is grounded.
[0013] Furthermore, the switch unit also includes a filter component; the filter component is arranged between the output end of the TYPE-C access unit and the input end of the switch unit.
[0014] In order to solve the above technical problems, another technical solution adopted by the utility model is:
[0015] A dual-circuit power supply device integrated with a power bank comprises a camera host, a heat dissipation module and an external power supply; the camera host is provided with a voltage mutation module and a power management module as described above, and the power management module supplies power to the camera host; one side of the camera host is connected to the heat dissipation module; a side of the heat dissipation module away from the host is connected to the external power supply; the host is provided with a power supply interface connected to the voltage mutation module, and the power supply interface is used to connect to the external power supply.
[0016] Furthermore, a bracket is provided on a side of the heat dissipation module close to the external power supply; and a sliding block plugged into the bracket is provided on the external power supply.
[0017] The beneficial effects of the utility model are as follows: by setting a first power supply terminal, a second power supply terminal and a third power supply terminal on the power management module, and by setting a voltage mutation module to mutation the voltage of the external power supply input, fast charging of the electrical equipment based on the external power supply is achieved, and at the same time the circuit can meet the power supply of three power sources: battery, power adapter and power bank, so that the camera can continue to operate without power outage, meeting the long-term shooting requirements of outdoor scenes. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a circuit module schematic diagram of a dual-circuit power supply circuit of an integrated power bank in an embodiment of the utility model;
[0019] Figure 2 It is a circuit connection diagram of a medium voltage mutation chip and a switching regulator in a dual-circuit power supply circuit of an integrated power bank in an embodiment of the utility model;
[0020] Figure 3 This is a circuit connection diagram of a switch unit in a dual-circuit power supply circuit of an integrated power bank in an embodiment of the utility model;
[0021] Figure 4 This is a schematic structural diagram of a dual-circuit power supply device with an integrated power bank in an embodiment of the utility model;
[0022] Figure 5 It is a top view of a dual-circuit power supply device with an integrated power bank in an embodiment of the utility model;
[0023] Description of labels:
[0024] 1. Voltage mutation module; 11. TYPE-C access unit; 12. Voltage mutation chip; 13. Switching regulator; 14. Switching unit; 2. Power management module; 3. Power supply interface; U1. MOS chip; Q1. NMOS tube; R1. First resistor; R2. Second resistor; R3. Third resistor; R4. Fourth resistor; C1. First capacitor; 4. Camera host; 5. Heat dissipation module; 51. Bracket; 6. External power supply; 61. Slider; 7. Charging management board. DETAILED DESCRIPTION
[0025] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.
[0026] Please refer to Figure 1, a dual-way power supply circuit of an integrated power bank, comprising a voltage mutagenesis module, a power management module and a power supply interface; the power supply interface is used to connect to an external power supply; the power management module comprises a first power supply terminal, a second power supply terminal, a third power supply terminal and an output terminal, and the output terminal is used to supply power to the outside; the first power supply terminal is connected to the output terminal of the voltage mutagenesis module; the second power supply terminal is used to connect to a battery; the third power supply terminal is used to connect to a power adapter; the input terminal of the voltage mutagenesis module is connected to the external power supply through the power supply interface.
[0027] From the above description, it can be seen that the beneficial effects of the utility model are: by setting the first power supply terminal, the second power supply terminal and the third power supply terminal on the power management module, and by setting the voltage mutation module to mutate the voltage of the external power supply input, it is possible to quickly charge the electrical equipment based on the external power supply. At the same time, the circuit can meet the power supply needs of three power sources: battery, power adapter and power bank, so that the camera can continue to operate without power outage, meeting the long-term shooting needs of outdoor scenes.
[0028] Furthermore, the first power supply terminal is unidirectionally connected to the second power supply terminal, and the direction is from the first power supply terminal to the second power supply terminal.
[0029] From the above description, it can be seen that by unidirectionally connecting the first power supply terminal and the second power supply terminal, the external power supply can charge the battery of the power device while supplying power to the power device, so that when the external power supply is disconnected, the power device can be powered by the battery again.
[0030] Furthermore, the voltage mutagenesis module includes a TYPE-C access unit, a voltage mutagenesis chip, a switching regulator and a switch unit; the input end of the TYPE-C access unit is connected to the external power supply; the output end of the TYPE-C access unit is respectively connected to the input end of the switching regulator and the input end of the switch unit; the output end of the switching regulator is connected to the power input end of the voltage mutagenesis chip; the enable end of the voltage mutagenesis chip is connected to the control input end of the switch unit; the output end of the switch unit is connected to the first power end of the power management module.
[0031] From the above description, it can be seen that the external power input is used to power the switching regulator and the switching unit through the TYPE-C access unit, and then the voltage mutagenesis chip is controlled by the switching regulator, so that the voltage mutagenesis chip outputs an enable signal to control the switching unit to mutate the input voltage, thereby realizing voltage mutagenesis.
[0032] Furthermore, the switch unit includes a MOS chip and an NMOS tube; the source of the MOS chip is connected to the power output end of the TYPE-C access unit; the gate of the MOS chip is connected to the drain of the NMOS tube; the drain of the MOS chip is connected to the first power end of the power management module; the gate of the NMOS tube is connected to the enable end of the voltage mutagenesis chip; and the source of the NMOS tube is grounded.
[0033] From the above description, it can be seen that by setting a MOS chip and an NMOS tube to form a switch unit, and connecting the gate of the NMOS tube to the enable end of the voltage mutagenesis chip, the MOS chip and the NMOS tube are controlled to be turned on or off by the output signal of the enable end of the voltage mutagenesis chip, thereby realizing voltage mutagenesis.
[0034] Furthermore, the switch unit further includes a first resistor; one end of the first resistor is connected to the source of the MOS chip; and the other end of the first resistor is connected to the gate of the MOS chip.
[0035] It can be seen from the above description that by setting the first resistor between the gate and the source of the MOS chip unit, a bias voltage can be provided for the MOS chip, and the first resistor can act as a discharge resistor to protect the gate and the source of the MOS chip.
[0036] Furthermore, the switch unit also includes a second resistor; one end of the second resistor is connected to the gate of the MOS chip; and the other end of the second resistor is connected to the drain of the NMOS tube.
[0037] It can be seen from the above description that by providing a second resistor at the drain of the NMOS tube, the magnitude of the current flowing through the NMOS tube can be adjusted.
[0038] Furthermore, the switching unit also includes a third resistor, a fourth resistor and a first capacitor; one end of the third resistor is connected to the drain of the MOS chip; the other end of the third resistor is respectively connected to one end of the fourth resistor, one end of the first capacitor and the reference voltage end of the voltage mutagenesis chip; the other end of the fourth resistor is connected to the other end of the first capacitor and is grounded.
[0039] It can be seen from the above description that by arranging the third resistor, the fourth resistor and the first capacitor at the drain of the MOS chip, the voltage output from the drain of the MOS chip can be converted into the reference voltage required by the voltage mutation chip.
[0040] Furthermore, the switch unit also includes a filter component; the filter component is arranged between the output end of the TYPE-C access unit and the input end of the switch unit.
[0041] It can be seen from the above description that by providing a filter component between the output end of the TYPE-C access unit and the input end of the switch unit, the input power can be filtered, thereby providing a more stable power output.
[0042] In order to solve the above technical problems, another technical solution adopted by the utility model is:
[0043] Please refer to Figure 4 as well as Figure 5 A dual-circuit power supply device with an integrated power bank comprises a camera host, a heat dissipation module and an external power supply; the camera host is provided with the voltage mutation module and the power management module as described above, and the power management module supplies power to the camera host; one side of the camera host is connected to the heat dissipation module; the side of the heat dissipation module away from the host is connected to the external power supply; the host is provided with a power supply interface connected to the voltage mutation module, and the power supply interface is used to connect to the external power supply.
[0044] From the above description, it can be seen that by setting a voltage mutation module and a power management module on the camera host, as well as setting an external power supply, the camera host can be powered by three power sources: battery, power adapter and power bank, so that the camera can continue to run without power outage, meeting the long-term shooting requirements of outdoor scenes; at the same time, a heat dissipation module is set between the camera host and the external power supply to improve the overall heat dissipation performance of the device.
[0045] Furthermore, a bracket is provided on a side of the heat dissipation module close to the external power supply; and a sliding block plugged into the bracket is provided on the external power supply.
[0046] It can be seen from the above description that by providing a bracket on the heat dissipation module and a slider on the external power supply, the external power supply is easier to assemble with the heat dissipation module.
[0047] The dual-circuit power supply circuit and device of the integrated power bank provided by the utility model can be applied to devices such as cameras that need to be powered on for a long time. The following is an explanation through specific implementation methods:
[0048] Embodiment 1
[0049] Please refer to Figure 1, a dual-way power supply circuit with an integrated power bank, comprising a voltage mutation module 1, a power management module 2 and a power supply interface 3; the power supply interface 3 is used to connect to an external power supply 6; the power management module 2 comprises a first power supply terminal, a second power supply terminal, a third power supply terminal and an output terminal, and the output terminal is used to supply power to the outside; the first power supply terminal is connected to the output terminal of the voltage mutation module 1; the second power supply terminal is used to connect to a battery; the third power supply terminal is used to connect to a power adapter; the input terminal of the voltage mutation module 1 is connected to the external power supply 6 through the power supply interface 3; wherein, in an optional embodiment, the external power supply 6 is a power bank;
[0050] Please refer to Figure 2 as well as Figure 3 , Figure 2 In the figure, U2 represents the voltage mutagenesis chip 12, and U3 represents the switching regulator 13; the voltage mutagenesis module 1 includes a TYPE-C access unit 11, a voltage mutagenesis chip 12, a switching regulator 13 and a switch unit 14; the input end of the TYPE-C access unit 11 is connected to the external power supply 6; the output end of the TYPE-C access unit 11 is respectively connected to the input end of the switching regulator 13 and the input end of the switch unit 14; the output end (PD_MCU_5V) of the switching regulator 13 is connected to the power input end (VDD) of the voltage mutagenesis chip 12; the enable end (VBUS-EN) of the voltage mutagenesis chip 12 is connected to the control input end of the switch unit 14; the output end of the switch unit 14 is connected to the first power end of the power management module 2; at the same time, the A power supply terminal is unidirectionally connected to a second power supply terminal, and the direction is from the first power supply terminal to the second power supply terminal. Specifically: it is realized by a battery charging control chip dedicated to the camera main device end; the digital telemetry system of the chip can monitor VBAT, IBAT, RBAT, NTC ratio (battery temperature), VIN, IIN, VSYSTEM, and chip temperature, and can be controlled by the I2C serial port to achieve "instant connection" operation when the battery is exhausted, and charge the battery at the same time; the voltage input of the power bank is mutated to a maximum of 20V through the voltage mutation chip 12, supporting the PD3.0 protocol, and the power of the matching power bank can reach 100W power supply; then the camera is powered by the power management module 2, and there is still enough power to charge the battery at the same time. The power bank is plug-and-play and can continuously supply energy to the camera; even if the power bank is disconnected, the camera can continue to be powered by the battery, and will not shut down because the power bank is disconnected; and the power bank can continue to power the camera and the battery after charging.
[0051] Please refer to Figure 2 as well as Figure 3The switch unit 14 includes a MOS chip U1, an NMOS tube Q1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first capacitor C1; the source of the MOS chip U1 is connected to the power output terminal (USB_C-VBUS) of the TYPE-C access unit 11; the gate of the MOS chip U1 is connected to the drain of the NMOS tube Q1; the drain (VBUS_OUT) of the MOS chip U1 is connected to the first power terminal of the power management module 2; the gate of the NMOS tube Q1 is connected to the enable terminal (VBUS-EN) of the voltage mutation chip 12, and the source of the NMOS tube Q1 is grounded ; One end of the first resistor R1 is connected to the source of the MOS chip U1; The other end of the first resistor R1 is connected to the gate of the MOS chip U1; One end of the second resistor R2 is connected to the gate of the MOS chip U1; The other end of the second resistor R2 is connected to the drain of the NMOS tube Q1; One end of the third resistor R3 is connected to the drain of the MOS chip U1; The other end of the third resistor R3 is respectively connected to one end of the fourth resistor R4, one end of the first capacitor C1 and the reference voltage end (USB_C-VBUS-DET) of the voltage mutation chip 12; The other end of the fourth resistor R4 is connected to the other end of the first capacitor C1 and grounded. Among them, the switch unit 14 also includes a filter component; The filter component is arranged between the output end of the TYPE-C access unit 11 and the input end of the switch unit 14; The filter component includes a diode D1, an electrolytic capacitor CD1, and capacitors C2, C3 and C4.
[0052] Embodiment 2
[0053] Please refer to Figure 4 , a dual-circuit power supply device with an integrated power bank, comprising a camera host 4, a heat dissipation module 5 and an external power supply 6; a charging management board 7 is provided on the camera host 4, and the charging management board 7 is provided with a voltage mutation module 1, a power management module 2 and a power supply interface 3 as described in Example 1, and the camera host 4 is powered by the power management module 2; one side of the camera host 4 is connected to the heat dissipation module 5; the side of the heat dissipation module 5 away from the host is connected to the external power supply 6; the host is provided with a power supply interface 3 connected to the voltage mutation module 1, and the power supply interface 3 is used to connect to the external power supply 6; the heat dissipation module 5 is provided with a ventilation outlet; the external power supply 6 is a power bank including two USB interfaces and a TYPE-C interface; the USB interface is used to connect to the power supply interface 3 on the charging management board 7, and the power supply interface 3 is a TYPE-C interface.
[0054] Please refer to Figure 5 A bracket 51 is provided on one side of the heat dissipation module 5 close to the external power supply 6 ; a slider 61 plugged into the bracket 51 is provided on the external power supply 6 , so that the external power supply 6 is easier to assemble with the heat dissipation module 5 .
[0055] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.
Claims
1. A dual-circuit power supply circuit integrated with a power bank, characterized in that: It includes a voltage mutation module, a power management module and a power supply interface; the power supply interface is used to connect to an external power supply; The power management module includes a first power supply terminal, a second power supply terminal, a third power supply terminal and an output terminal, and the output terminal is used for supplying power to the outside; The first power supply terminal is connected to the output terminal of the voltage mutation module; The second power supply terminal is used to connect to a battery; The third power supply terminal is used to connect to a power adapter; The input end of the voltage mutation module is connected to the external power supply through the power supply interface.
2. A dual-circuit power supply circuit for an integrated power bank according to claim 1, characterized in that: The first power supply terminal is unidirectionally connected to the second power supply terminal, and the direction is from the first power supply terminal to the second power supply terminal.
3. The dual-circuit power supply circuit of the integrated power bank according to claim 1, characterized in that: The voltage mutagenesis module includes a TYPE-C access unit, a voltage mutagenesis chip, a switching regulator and a switch unit; The input end of the TYPE-C access unit is connected to the external power supply; The output end of the TYPE-C access unit is connected to the input end of the switching regulator and the input end of the switch unit respectively; The output end of the switching regulator is connected to the power input end of the voltage mutation chip; The enable terminal of the voltage mutation chip is connected to the control input terminal of the switch unit; The output end of the switch unit is connected to the first power end of the power management module.
4. The dual-circuit power supply circuit of the integrated power bank according to claim 3, characterized in that: The switch unit includes a MOS chip and an NMOS tube; The source of the MOS chip is connected to the power output terminal of the TYPE-C access unit; The gate of the MOS chip is connected to the drain of the NMOS tube; The drain of the MOS chip is connected to the first power supply terminal of the power management module; The gate of the NMOS tube is connected to the enable terminal of the voltage mutagenesis chip; The source of the NMOS tube is grounded.
5. The dual-circuit power supply circuit of the integrated power bank according to claim 4, characterized in that: The switch unit further includes a first resistor; One end of the first resistor is connected to the source of the MOS chip; The other end of the first resistor is connected to the gate of the MOS chip.
6. A dual-circuit power supply circuit for an integrated power bank according to claim 4, characterized in that: The switch unit further includes a second resistor; One end of the second resistor is connected to the gate of the MOS chip; The other end of the second resistor is connected to the drain of the NMOS tube.
7. The dual-circuit power supply circuit of the integrated power bank according to claim 4, characterized in that: The switch unit further includes a third resistor, a fourth resistor and a first capacitor; One end of the third resistor is connected to the drain of the MOS chip; The other end of the third resistor is respectively connected to one end of the fourth resistor, one end of the first capacitor and a reference voltage end of the voltage mutagenesis chip; The other end of the fourth resistor is connected to the other end of the first capacitor and is grounded.
8. The dual-circuit power supply circuit of the integrated power bank according to claim 3, characterized in that: The switch unit also includes a filter component; The filter component is arranged between the output end of the TYPE-C access unit and the input end of the switch unit.
9. A dual-circuit power supply device with integrated power bank, characterized in that: The device comprises a camera host, a heat dissipation module and an external power supply; the camera host is provided with a voltage mutation module and a power management module as claimed in any one of claims 1 to 8, and the power management module supplies power to the camera host; One side of the camera host is connected to the heat dissipation module; The heat dissipation module is located away from one side of the host and the external power supply; The host is provided with a power supply interface connected to the voltage mutation module, and the power supply interface is used to be connected to the external power supply.
10. A dual-circuit power supply device integrated with a power bank according to claim 9, characterized in that: A bracket is provided on one side of the heat dissipation module close to the external power supply; The external power supply is provided with a sliding block plugged into the bracket.