Wireless mobile power supply

Abstract

The utility model discloses a wireless mobile power supply. The wireless mobile power supply comprises a wireless charging module, a battery, a power supply conversion module and a power supply chip. The wireless charging module is used for wirelessly charging to-be-charged electronic equipment; the battery is used for storing electric energy; the power supply end of the power supply conversion module is connected with the battery, the output end of the power supply conversion module is connected with the wireless charging module and used for boosting the output voltage of the battery to a first voltage and transmitting the first voltage to the wireless charging module, and the first voltage is the charging voltage of the electronic equipment; the power supply chip is connected with the control end of the power supply conversion module, comprises a program control power supply PPS voltage regulation module, and is used for controlling the power supply conversion module to boost the output voltage of the battery to a first voltage. Thus, the wireless mobile power supply is configured with the power supply chip supporting the PPS protocol, and the output voltage of the power supply conversion module is adjusted by using the PPS voltage regulation technology, so that the wireless mobile power supply supports the quick charging requirement of the QI2 wireless charging protocol, and a secondary booster circuit does not need to be added.

Description

Technical Field

[0001] The present application relates to the field of mobile power supplies, and in particular to a wireless mobile power supply. Background Art

[0002] Wireless charging technology is based on the principle of electromagnetic induction, using the magnetic field generated by the coil to charge the electronic device to be charged. After the Wireless Power Consortium (WPC) released the QI2 wireless charging standard, it realized 15W charging of electronic devices based on the Magnetic Power Profile technology, and wireless charging technology entered the fast charging stage.

[0003] Wireless power banks use built-in batteries to wirelessly charge electronic devices. In related technologies, based on the QI2 wireless charging standard, if the output power of a wireless power bank is increased to 15W, a secondary boost circuit needs to be added to increase the output voltage of the wireless power bank. Obviously, adding a secondary boost circuit is not conducive to the miniaturization of the wireless power bank and increases the heat generated by the wireless power bank. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a wireless mobile power supply, which aims to achieve a wireless mobile power supply that meets the fast charging requirement while simplifying the circuit structure.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] The present application provides a wireless mobile power supply, which includes:

[0007] A wireless charging module, used for wirelessly charging the electronic device to be charged;

[0008] Batteries, which store electrical energy;

[0009] a power conversion module, wherein the power supply end of the power conversion module is connected to the battery, and the output end of the power conversion module is connected to the wireless charging module, and is used to boost the output voltage of the battery to a first voltage and then transmit it to the wireless charging module, wherein the first voltage is the charging voltage of the electronic device;

[0010] The power chip is connected to the control end of the power conversion module, and includes a programmable power supply (PPS) voltage regulating module, which is used to control the power conversion module to boost the output voltage of the battery to the first voltage.

[0011] In some embodiments, the wireless mobile power supply further comprises:

[0012] The first controller is used to receive the charging power sent by the electronic device when the wireless mobile power supply is magnetically connected to the electronic device.

[0013] In some embodiments, the first controller is connected to a configuration channel (CC) interface of the power chip, and the first controller is further used to send a charging instruction to the power chip based on the charging power; the power chip is also used to determine the first voltage based on the charging instruction.

[0014] In some embodiments, the power conversion module includes a full-bridge circuit, which is used to boost the output voltage of the battery to the first voltage; the control ends of each switch tube of the full-bridge circuit are respectively connected to the power chip.

[0015] In some embodiments, the wireless charging module includes: a magnetic coil for magnetically connecting the electronic device.

[0016] In some embodiments, the wireless mobile power supply further includes: a first switch tube, which is arranged between the output ends of the wireless charging module and the power conversion module, and is used to control the connection relationship between the wireless charging module and the power conversion module.

[0017] In some embodiments, the wireless mobile power supply further includes a display module and a key module, wherein the display module is connected to the first controller for displaying the remaining power of the battery; the key module is connected to the first controller for controlling the working state of the wireless mobile power supply.

[0018] In some embodiments, the wireless mobile power supply further comprises a first port, the first port being connected to an output end of the power conversion module and being used to receive an external power source;

[0019] The power conversion module is also used to charge the battery after converting the external power.

[0020] In some embodiments, the first port is also connected to the wireless charging module and the first controller respectively;

[0021] Among them, the first controller is also used to update the program of the first controller based on the first update information received by the first port; the wireless charging module includes a second controller for controlling the output state of the wireless charging module, and the second controller is also used to update the program of the second controller based on the second update information received by the first port.

[0022] In some embodiments, the output power of the wireless charging module includes at least one of the following: 7.5W and 15W; the first voltage is any value between 9.5-18V.

[0023] The present application provides a wireless mobile power supply, which includes: a wireless charging module, a battery, a power conversion module and a power chip. The wireless charging module is used to wirelessly charge the electronic device to be charged; the battery is used to store electrical energy; the power end of the power conversion module is connected to the battery, and the output end of the power conversion module is connected to the wireless charging module, which is used to boost the output voltage of the battery to a first voltage and then transmit it to the wireless charging module, and the first voltage is the charging voltage of the electronic device; the power chip is connected to the control end of the power conversion module, including a PPS voltage regulation module, which is used to control the power conversion module to boost the output voltage of the battery to the first voltage. In this way, the wireless mobile power supply is configured with a power chip that supports the PPS protocol, and the output voltage of the power conversion module is adjusted using the PPS voltage regulation technology, so that the wireless mobile power supply supports the fast charging requirements of the QI2 wireless charging protocol, and there is no need to add a secondary boost circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a wireless mobile power supply according to an embodiment of the present application;

[0025] Figure 2 This is a schematic structural diagram of a wireless mobile power supply according to another embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the structure of a power chip in an application example of this application;

[0027] Figure 4 This is a schematic diagram of the structure of a power conversion module in an application example of the present application. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0030] The present application embodiment provides a wireless mobile power supply, such as Figure 1As shown, the wireless mobile power supply includes: a wireless charging module 1, a battery 2, a power conversion module 3 and a power chip 4. The wireless charging module 1 is used to wirelessly charge the electronic device to be charged. The battery 2 is used to store electrical energy. The power end of the power conversion module 3 is connected to the battery 2, and the output end of the power conversion module 3 is connected to the wireless charging module 1, which is used to boost the output voltage of the battery 2 to a first voltage and then transmit it to the wireless charging module 3. The first voltage is the charging voltage of the electronic device. The power chip 4 is connected to the control end of the power conversion module 3, and includes a PPS voltage regulating module, which is used to control the power conversion module 3 to boost the output voltage of the battery 2 to the first voltage.

[0031] Exemplarily, the wireless charging module 1 includes: a magnetic coil for magnetically connecting the electronic device.

[0032] Here, the wireless mobile power supply of the embodiment of the present application is a magnetic wireless mobile power supply. After the magnetic coil is magnetically connected to the electronic device to be charged, the wireless charging module 1 of the wireless mobile power supply wirelessly charges the electronic device using the wireless charging principle. The embodiment of the present application does not specifically limit the form of the electronic device.

[0033] It should be noted that the electronic device in the embodiment of the present application is an electronic device that supports wireless charging, such as a mobile phone. The electronic device is provided with a receiving coil, and the receiving coil generates an induced current under the action of the magnetic field generated by the wireless mobile power supply, and uses the induced current to charge the electronic device.

[0034] It should be noted that the QI2 wireless charging standard released by the Wireless Power Consortium proposes to implement 15W fast charging of electronic devices based on MMP technology. Furthermore, the electronic device in the embodiment of the present application is an electronic device that supports QI2 certification.

[0035] In the related art, wireless mobile power supplies usually adopt constant voltage boost technology, that is, the output voltage of the built-in battery is boosted by a first level of constant voltage, for example, boosted to 9V. However, the output voltage after the first level of boost cannot meet the charging requirements of 15W fast charging of electronic devices in the QI2 wireless charging standard. Therefore, if the output power of the wireless mobile power supply is increased to 15W, it is necessary to add a secondary boost circuit to the structure of the wireless mobile power supply to perform a secondary boost on the output voltage after the first level of boost. Obviously, adding a secondary boost circuit will increase the cost and volume of the wireless mobile power supply, which is not conducive to the miniaturization design of the wireless mobile power supply. After adding the secondary boost circuit, the switching elements in the secondary boost circuit will increase the heat generated by the wireless mobile power supply.

[0036] It should be noted that the embodiment of the present application provides a wireless mobile power supply that does not add a secondary boost circuit and meets the charging requirements of the QI2 wireless charging standard to overcome the above problems.

[0037] It should be noted that in the PPS protocol of the USB PD (Power Delivery) protocol, the output voltage can be modulated with a minimum gear of 20mV. The PPS voltage regulation function is compatible with high voltage and low current and low voltage and high current charging modes, and the voltage regulation range is 3.3-21V.

[0038] It can be understood that the power chip 4 of the embodiment of the present application supports the PPS voltage regulation function, which is used to transform and boost the output voltage of the battery 2. Only a first-level boost circuit can directly output a charging power of 15W.

[0039] It can be understood that the wireless mobile power supply of the embodiment of the present application is configured with a power chip that supports the PPS protocol, and uses the PPS voltage regulation function to adjust the output voltage of the power conversion module 3, so that the wireless mobile power supply supports the fast charging requirements of the QI2 wireless charging protocol without the need to add a secondary boost circuit.

[0040] Exemplarily, the power conversion module 3 includes a full-bridge circuit, which is used to boost the output voltage of the battery 2 to a first voltage; the control ends of the switches of the full-bridge circuit are respectively connected to the power chip 4.

[0041] It can be understood that the full-bridge circuit of the power conversion module 3 in the embodiment of the present application is a one-stage boost circuit.

[0042] It can be understood that the power chip 4 controls the on-off state of each switch tube of the full-bridge circuit to boost the output voltage of the battery 2.

[0043] It should be noted that the PPS voltage regulation function is implemented based on the USB PD protocol. When using the PPS voltage regulation function to adjust the output voltage of the mobile power supply, the power chip needs to establish communication with the electronic device to be charged based on the USB PD protocol. After the CC interface of the power chip receives the power level (Power Level) signal sent by the electronic device, it controls the power conversion module so that the output voltage of the power conversion module matches the charging requirements of the electronic device.

[0044] It should be noted that in the wireless charging scenario, the wireless mobile power supply and the electronic device are not connected based on the USB Type-C interface, that is, the wireless mobile power supply cannot directly identify the charging requirements of the electronic device based on the USB PD protocol, and only limiting the power chip to a power chip including a PPS voltage regulation module cannot support the QI2 fast charging requirements. The wireless mobile power supply of the embodiment of the present application establishes internal USB PD protocol communication, and obtains the charging power of the electronic device based on the handshake process of the QI2 wireless charging protocol authentication to realize the PPS voltage regulation function.

[0045] For example, Figure 2As shown, the wireless mobile power supply further includes a first controller 5. The first controller 5 is used to receive the charging power sent by the electronic device when the wireless mobile power supply is magnetically connected to the electronic device.

[0046] Exemplarily, the first controller 5 is connected to the CC interface of the power chip 4, and the first controller 5 is further used to send a charging instruction to the power chip 4 based on the charging power. The power chip 4 is further used to determine the first voltage based on the charging instruction.

[0047] Here, the first controller 5 can be a digital signal processor (DSP), a programmable logic device (PLD), a complex programmable logic device (CPLD), a field programmable gate array (FPGA), a general processor, a controller, a microcontroller (MCU), a microprocessor (Microprocessor) or an electronic component. In one embodiment, the first controller 5 is an MCU.

[0048] It can be understood that when the wireless mobile power supply of the embodiment of the present application is magnetically connected to the electronic device, the first controller 5 starts the QI2 handshake process with the electronic device, obtains the charging power of the electronic device in the QI2 handshake process, and after confirming that the QI2 handshake is successful, based on the obtained charging power, sends a charging instruction indicating the corresponding charging voltage to the CC interface of the power chip 4, wherein the charging instruction simulates the Power Level signal of the USB PD protocol. After receiving the charging instruction, the power chip 4 identifies the charging voltage of the electronic device, and controls the power conversion module 3 to output the first voltage to the wireless charging module 1, thereby realizing wireless fast charging of the electronic device.

[0049] Here, the first controller 5 is specifically connected to the CC2 pin of the power chip 4 .

[0050] It is understandable that the embodiment of the present application utilizes the first controller 5 to send a charging instruction to the power chip 4 to overcome the problem that the power chip 4 cannot communicate with the electronic device using the USB PD protocol.

[0051] Exemplarily, the wireless mobile power supply further includes: a first switch tube Q1 , which is arranged between the wireless charging module 1 and the output end of the power conversion module 3 , and is used to control the connection relationship between the wireless charging module 1 and the power conversion module 3 .

[0052] Here, the on-off state of the first switch tube Q1 is controlled by the first controller 5. After the first controller 5 confirms that the handshake with the electronic device QI2 is successful, it controls the first switch tube Q1 to be turned on, and the power conversion module 3 outputs the boosted first voltage to the wireless charging module 1.

[0053] In an application example of the present application, the first switch tube Q1 may be a MOS tube.

[0054] Exemplarily, the output power of the wireless charging module includes at least one of the following: 7.5W and 15W; the first voltage is any value between 9.5-18V.

[0055] It can be understood that, based on the PPS voltage regulation function, the wireless mobile power supply of the embodiment of the present application not only supports 15W fast charging, but is also backward compatible with 7.5W charging.

[0056] Exemplarily, the wireless mobile power supply further comprises a first port 6, which is connected to the output end of the power conversion module 3 and is used to receive an external power source. The power conversion module 3 is also used to charge the battery 2 after converting the external power source.

[0057] Here, the first port 6 is a USB type-C port, and the full-bridge circuit of the power conversion module 3 supports bidirectional voltage transformation. After the first port 6 is connected to an external power source, the external power source charges the battery 2 after reducing the voltage.

[0058] It is understandable that when the first port 6 is connected to an electronic device to be charged, the wireless mobile power supply can also charge the electronic device through the first port 6 .

[0059] Exemplarily, the first port 6 is also connected to the wireless charging module 1 and the first controller 5, respectively. The first controller 5 is also used to update the program of the first controller 5 based on the first update information received by the first port 6; the wireless charging module 1 includes a second controller for controlling the output state of the wireless charging module 1, and the second controller is also used to update the program of the second controller based on the second update information received by the first port 6.

[0060] Here, the second controller may be a DSP, a PLD, a CPLD, an FPGA, a general processor, a controller, an MCU, a microprocessor or an electronic component. In one embodiment, the second controller is an MCU.

[0061] It can be understood that the wireless mobile power supply of the embodiment of the present application supports online upgrades. When the first port 6 is connected to a terminal device, the terminal device sends first update information and / or second update information to the wireless mobile power supply to upgrade the first controller 5 and / or the wireless charging module 1 of the wireless mobile power supply.

[0062] Specifically, the A8 interface and the B8 interface of the first port 6 are connected to the wireless charging module 1 , and the D+ interface and the D− interface of the first port 6 are connected to the first controller 5 .

[0063] Exemplarily, the wireless mobile power supply further includes a display module 7 and a key module 8. The display module 7 is connected to the first controller 5 and is used to display the remaining power of the battery 2. The key module 8 is connected to the first controller 5 and is used to control the working state of the wireless mobile power supply.

[0064] It can be understood that the display module 7 and the button module 8 are arranged outside the wireless mobile power supply.

[0065] Here, the display module 7 may include an LED light group, and each LED light may be arranged sequentially in the same direction, and the remaining power of the battery 2 may be displayed based on the number of LED lights that are continuously lit; each LED light may also be arranged in an array to form two-digit information, and the remaining power of the battery 2 may be displayed based on the digital information formed by the lit LED lights.

[0066] Here, the button module 8 may be a reset button. The button module 8 is connected to the first controller 5. When the user presses the button module 8, the wireless mobile power supply is reset.

[0067] In an application example of the present application, a schematic diagram of the structure of a power chip 4 is provided, such as Figure 3 The power chip 4 is of model SDS9D24C and supports the PPS protocol, wherein the C2_CC2 pin of the power chip 4 is connected to the first controller 5 for receiving a charging instruction; the LG3 pin, the LG4 pin, the HG3 pin and the HG4 pin are respectively connected to the control end of each switch tube of the power conversion module 3, and the power chip 4 controls the on-off state of each switch tube of the power conversion module 3 to adjust the output voltage of the power conversion module 3.

[0068] In an application example of the present application, a structural schematic diagram of a power conversion module 3 is provided, such as Figure 4 shown.

[0069] Here, the power conversion module 3 includes a full-bridge circuit, which includes four MOS tubes Q2-Q5 and an inductor L1. The model of the MOS tubes Q2-Q5 is LT7446H, and the inductor L1 plays the role of energy storage and filtering. The HG3 pin of the first controller 5 is connected to the gate of the MOS tube Q2 through the resistor R1, the HG4 pin of the first controller 5 is connected to the gate of the MOS tube Q3 through the resistor R2, the LG4 pin of the first controller 5 is connected to the gate of the MOS tube Q4 through the resistor R3, the LG3 pin of the first controller 5 is connected to the gate of the MOS tube Q5 through the resistor R4, the drain of the MOS tube Q2 is connected to the battery 2, and the drain of the MOS tube Q3 is respectively connected to the first port 6 and the wireless charging module 1. The first controller 5 adjusts the output voltage of the power conversion module 3 based on the duty cycle of the drive signal of the MOS tubes Q2-Q5.

[0070] Here, the resistor R5 is connected in series with the capacitor C1 to form a damping absorption circuit for suppressing the peak voltage of the MOS tube Q4; the resistor R68 is connected in series with the capacitor C2 to form a damping absorption circuit for suppressing the peak voltage of the MOS tube Q5.

[0071] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0072] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0073] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless mobile power source, characterized in that: The wireless mobile power supply comprises: A wireless charging module, used for wirelessly charging the electronic device to be charged; Batteries, which store electrical energy; a power conversion module, wherein the power supply end of the power conversion module is connected to the battery, and the output end of the power conversion module is connected to the wireless charging module, and is used to boost the output voltage of the battery to a first voltage and then transmit it to the wireless charging module, wherein the first voltage is the charging voltage of the electronic device; The power chip is connected to the control end of the power conversion module, and includes a program-controlled power supply PPS voltage regulation module, which is used to control the power conversion module to boost the output voltage of the battery to the first voltage.

2. The wireless mobile power supply according to claim 1, characterized in that: The wireless mobile power supply also includes: The first controller is used to receive the charging power sent by the electronic device when the wireless mobile power supply is magnetically connected to the electronic device.

3. The wireless mobile power supply according to claim 2, characterized in that: The first controller is connected to the configuration channel CC interface of the power chip, and the first controller is also used to send a charging instruction to the power chip based on the charging power; the power chip is also used to determine the first voltage based on the charging instruction.

4. The wireless mobile power supply according to claim 1, characterized in that: The power conversion module includes a full-bridge circuit, which is used to boost the output voltage of the battery to the first voltage; the control ends of the switch tubes of the full-bridge circuit are respectively connected to the power chip.

5. The wireless mobile power supply according to claim 1, characterized in that: The wireless charging module includes a magnetic coil for magnetically connecting the electronic device.

6. The wireless mobile power supply according to claim 1, characterized in that: The wireless mobile power supply further includes: a first switch tube, which is arranged between the wireless charging module and the output end of the power conversion module and is used to control the connection relationship between the wireless charging module and the power conversion module.

7. The wireless mobile power supply according to claim 2, characterized in that: The wireless mobile power supply further includes a display module and a key module. The display module is connected to the first controller and is used to display the remaining power of the battery. The key module is connected to the first controller and is used to control the working state of the wireless mobile power supply.

8. The wireless mobile power supply according to claim 2, characterized in that: The wireless mobile power supply further comprises a first port, the first port being connected to the output end of the power conversion module and being used for receiving an external power source; The power conversion module is also used to charge the battery after converting the external power.

9. The wireless mobile power supply according to claim 8, characterized in that: The first port is also connected to the wireless charging module and the first controller respectively; Among them, the first controller is also used to update the program of the first controller based on the first update information received by the first port; the wireless charging module includes a second controller for controlling the output state of the wireless charging module, and the second controller is also used to update the program of the second controller based on the second update information received by the first port.

10. The wireless mobile power supply according to claim 1, characterized in that: The output power of the wireless charging module includes at least one of the following: 7.5W and 15W; the first voltage is any value between 9.5-18V.

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