Wireless charging device integrated with voltage reduction module

Abstract

The utility model relates to the technical field of wireless charging, in particular to a wireless charging device integrated with a voltage reduction module, which is characterized in that a power supply module is electrically connected with the wireless charging module, the wireless charging module is electrically connected with the voltage reduction module, the voltage reduction module is respectively and electrically connected with a battery and a TYPE-A, and the voltage reduction module is electrically connected with a control module. According to the utility model, stable direct-current high-voltage input is provided through the power supply module, and a proper voltage level can be selected according to actual needs. An input voltage can be stably converted into 12V, 9V and 5V voltages required by wireless charging by adopting a high-performance CPS5333 step-down chip, and the wireless charging device has the characteristics of rapid load transient response and simple loop design, has the lowest requirements on existing standard external components, has a wide application prospect, and is suitable for popularization and application. The wireless charging device can be applied to various electronic devices needing a wireless charging function.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging technology, specifically a wireless charging device integrating a step-down module. Background Technology

[0002] With the development of technology, wireless charging technology has been widely used in various electronic devices due to its convenience. Wireless charging technology mainly achieves contactless energy transfer through the principle of electromagnetic induction. In a wireless charging system, a step-down module plays a crucial role, safely and stably converting the input high-voltage DC into a low voltage suitable for wireless charging.

[0003] Most wireless charging devices on the market currently support multiple voltage outputs to meet the charging needs of different devices. However, how to ensure charging efficiency while achieving stable voltage conversion and circuit safety protection remains a pressing issue in wireless charging technology.

[0004] Based on the above reasons, this utility model designs a wireless charging device that integrates a step-down module. It adopts a high-performance step-down chip, which can efficiently and safely convert high voltage into the low voltage required for wireless charging, while ensuring the stability and safety of the circuit. It is especially suitable for wireless charging scenarios that require 12V, 9V and 5V voltage output. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wireless charging device that integrates a step-down module. It uses a high-performance step-down chip to efficiently and safely convert high voltage into the low voltage required for wireless charging, while ensuring the stability and safety of the circuit. It is especially suitable for wireless charging scenarios that require 12V, 9V and 5V voltage output.

[0006] To achieve the above objectives, this utility model provides a wireless charging device integrating a step-down module. The power supply module is electrically connected to the wireless charging module, the wireless charging module is electrically connected to the step-down module, the step-down module is then electrically connected to the battery and TYPE-A, the step-down module is electrically connected to the control module, and the control module is electrically connected to the wireless charging module.

[0007] The specific circuit connection relationship of the step-down module is as follows:

[0008] The output terminal of the input power supply is connected to the input terminal of capacitor one. The output terminal of capacitor one is grounded. The output terminal of the input power supply is connected to the VIN pin of the step-down chip. The output terminal of the input power supply is connected to the EN pin of the step-down chip after series with resistor one. The BST pin of the step-down chip is connected to the input terminal of inductor one after series with capacitor two. The input terminal of inductor one is connected to the SW pin of the step-down chip. The output terminal of inductor one is connected to the FB pin of the step-down chip after series with resistor three. The FB pin of the step-down chip is connected to the GND pin of the step-down chip after series with resistor two and grounded. The output terminal of inductor one is connected to pin 2 of the battery. Pin 1 of the battery is connected to pin 3. Pin 3 is connected to pin 4 and grounded. Pin 2 of the battery is connected to ground after series with capacitor three. Pin 2 of the battery is connected to the input terminal of inductor two. The capacitor is connected in series with four capacitors and then grounded. The output of the inductor is connected to the FB pin of the step-down chip and the maximum current at the connection does not exceed 500mA. A capacitor is connected in parallel between the output of the inductor and the output of the capacitor. The output of the inductor is connected to the power supply of the connector. The output of the capacitor is connected to the ground of the connector. The connector is electrically connected to TYPE-A.

[0009] The capacitance of capacitor 1 is 10uF, the capacitance of resistor 1 is 100K, the capacitance of capacitor 2 is 0.1uF, the capacitance of inductor 1 is 4.7uH, the capacitance of resistor 3 is 150K, the capacitance of resistor 2 is 20K, the capacitance of capacitor 3 is 10uF, the capacitance of capacitor 4 is 100uF, and the capacitance of capacitor 5 is 0.1uF.

[0010] Compared with existing technologies, this invention provides a stable DC high-voltage input through a power supply module, allowing selection of appropriate voltage levels according to actual needs. By employing a high-performance CPS5333 step-down chip, it can stably convert the input voltage to the 12V, 9V, and 5V required for wireless charging. It features fast load transient response and a simple loop design, minimizing the requirements for readily available standard external components, and has broad application prospects, making it suitable for various electronic devices requiring wireless charging functionality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram showing the relationship between the modules of this utility model.

[0012] Figure 2 This is a schematic diagram of the step-down module circuit of this utility model.

[0013] Explanation of reference numerals in the attached figures:

[0014] 1-1 is the power supply module, 1-2 is the wireless charging module, 1-3 is the step-down module, 1-4 is the battery, 1-5 is the TYPE-A module, and 1-6 is the control module.

[0015] CPS5333 is a step-down chip. VCC is the input power supply. C35 is capacitor one, R27 is resistor one, C40 is capacitor two, L2 is inductor one, R28 is resistor two, R29 is resistor three, C41 is capacitor three, J4 is battery, LB1 is inductor two, EC1 is capacitor four, C42 is capacitor five, and J3 is connector. Detailed Implementation

[0016] The present invention will now be further described with reference to the accompanying drawings.

[0017] See Figures 1-2 This utility model provides a wireless charging device integrating a step-down module. The power supply module 1-1 is electrically connected to the wireless charging module 1-2, the wireless charging module 1-2 is electrically connected to the step-down module 1-3, the step-down module 1-3 is then electrically connected to the battery 1-4 and TYPE-A1-5 respectively, the step-down module 1-3 is electrically connected to the control module 1-6, and the control module 1-6 is electrically connected to the wireless charging module 1-2.

[0018] The specific circuit connection relationship of step-down modules 1-3 is as follows:

[0019] The output terminal of the input power supply VCC is connected to the input terminal of capacitor C35, and the output terminal of capacitor C35 is grounded. The output terminal of the input power supply VCC is connected to the VIN pin of the step-down chip CPS5333. The output terminal of the input power supply VCC is connected in series with resistor R27 and then connected to the EN pin of the step-down chip CPS5333. The BST pin of the step-down chip CPS5333 is connected in series with capacitor C40 and then connected to the input terminal of inductor L2. The input terminal of inductor L2 is connected to the input terminal of the step-down chip CPS5333. The SW pin is connected as follows: the output of inductor L2 is connected in series with resistor R29 and then to the FB pin of the CPS5333 step-down chip. The FB pin of the CPS5333 is connected in series with resistor R28 and then to the GND pin of the CPS5333, which is then grounded. The output of inductor L2 is connected to pin 2 of battery J4. Pin 1 of battery J4 is connected to pin 3, and pin 3 is connected to pin 4 and grounded. Pin 2 of battery J4 is connected in series with capacitor C41 and then grounded. Connect the input terminal of inductor LB1. Connect the battery J4 pin 2 to the ground via capacitor EC1 in series. Connect the output terminal of inductor LB1 to the FB pin of the step-down chip CPS5333, with a maximum current of no more than 500mA at the connection. Connect capacitor C42 is connected in parallel between the output terminal of inductor LB1 and the output terminal of capacitor EC1. Connect the output terminal of inductor LB1 to the power supply terminal of connector J3. Connect the output terminal of capacitor C42 to the ground terminal of connector J3. Connector J3 is electrically connected to TYPE-A1-5.

[0020] The capacitance of capacitor 1 (C35) is 10uF, resistor 1 (R27) is 100K, capacitor 2 (C40) is 0.1uF, inductor 1 (L2) is 4.7uH, resistor 3 (R29) is 150K, resistor 2 (R28) is 20K, capacitor 3 (C41) is 10uF, capacitor 4 (EC1) is 100uF, and capacitor 5 (C42) is 0.1uF.

[0021] Working principle:

[0022] This utility model requires minimal debugging during use. The power supply module 1-1 converts the external 220V AC voltage to 12V DC voltage. Then, the wireless charging module 1-2 adjusts the 12V DC voltage to 5V through the step-down module 1-3, and then supplies the 5V voltage to the battery 1-4 and TYPE-A1-5. The wireless charging module 1-2 can also adjust the 12V DC voltage to 9V DC voltage through the control module 1-6.

[0023] In the step-down modules 1-3, the FB pin of the step-down chip CPS5333 is led to the rechargeable battery J4 in one direction and to the voltage input side of the connector J3 in the other direction. Then, it is connected to TYPE-A through the connector J3, so that the stepped-down 5V voltage can be supplied to the battery J4 and TYPE-A respectively. The D+ and D- interfaces of the connector J3 can be connected to other modules or left unconnected.

[0024] The above are merely preferred embodiments of this utility model, intended only to aid in understanding the method and core concept of this application. The scope of protection of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] This invention comprehensively addresses the shortcomings of existing wireless charging technologies in ensuring charging efficiency while also achieving stable voltage conversion and circuit safety protection. Based on the technical specifications of the CPS5333 step-down chip and the requirements of the wireless charging transmitter module, a step-down module circuit was designed. It features fast load transient response and simple loop design, with minimal requirements for readily available standard external components. At the same time, it utilizes the built-in protection mechanism of the step-down chip to ensure the simplicity, safety, and reliability of the wireless charging device. This invention has broad application prospects and can be applied to various electronic devices that require wireless charging functionality.

Claims

1.A wireless charging device integrated with a step-down module, characterized in that, The power supply module (1-1) is electrically connected with the wireless charging module (1-2), the wireless charging module (1-2) is electrically connected with the voltage reduction module (1-3), the voltage reduction module (1-3) is electrically connected with the battery (1-4) and TYPE-A (1-5) respectively, the voltage reduction module (1-3) is electrically connected with the control module (1-6), and the control module (1-6) is electrically connected with the wireless charging module (1-2). 2.The wireless charging device integrated with a step-down module according to claim 1, wherein, The circuit connection relationship of the voltage reduction module (1-3) is specifically as follows: The output end of the input power supply (VCC) is connected with the input end of the capacitor one (C35), the output end of the capacitor one (C35) is grounded, the output end of the input power supply (VCC) is connected with the VIN pin of the voltage reduction chip CPS5333, the output end of the input power supply (VCC) is connected with the EN pin of the voltage reduction chip CPS5333 after being connected with the resistor one (R27) in series, the BST pin of the voltage reduction chip CPS5333 is connected with the input end of the inductor one (L2) after being connected with the capacitor two (C40) in series, the input end of the inductor one (L2) is connected with the SW pin of the voltage reduction chip CPS5333, the output end of the inductor one (L2) is connected with the FB pin of the voltage reduction chip CPS5333 after being connected with the resistor three (R29) in series, the FB pin of the voltage reduction chip CPS5333 is connected with the GND pin of the voltage reduction chip CPS5333 after being connected with the resistor two (R28) in series and grounded, the output end of the inductor one (L2) is connected with the pin 2 of the battery (1-4), the pin 1 of the battery (1-4) is connected to the pin 3, the pin 3 is connected to the pin 4 and grounded, the pin 2 of the battery (1-4) is grounded after being connected with the capacitor three (C41) in series; the pin 2 of the battery (1-4) is connected with the input end of the inductor two (LB1), the pin 2 of the battery (1-4) is grounded after being connected with the capacitor four (EC1) in series, the output end of the inductor two (LB1) is connected with the FB pin of the voltage reduction chip CPS5333 and the maximum current at the connection position is not more than 500 mA, the capacitor five (C42) is connected in parallel between the output end of the inductor two (LB1) and the output end of the capacitor four (EC1), the output end of the capacitor five (C42) is connected with the power supply end of the connector (J3), the output end of the capacitor five (C42) is connected with the ground end of the connector (J3), and the connector (J3) is electrically connected with the TYPE-A (1-5). 3.The wireless charging device integrated with a step-down module according to claim 2, wherein, The capacity of the capacitor one (C35) is 10uF, the capacity of the resistor one (R27) is 100K, the capacity of the capacitor two (C40) is 0.1uF, the capacity of the inductor one (L2) is 4.7uH, the capacity of the resistor three (R29) is 150K, the capacity of the resistor two (R28) is 20K, the capacity of the capacitor three (C41) is 10uF, the capacity of the capacitor four (EC1) is 100uF, and the capacity of the capacitor five (C42) is 0.1uF.

Images