An RX wireless receiver circuit for wireless charging testing

Abstract

This invention provides an RX wireless receiving circuit for wireless charging testing, comprising a wireless charging receiving main control circuit, a wireless charging induction circuit, and a wireless charging load circuit. The wireless charging induction circuit contains a wireless charging receiving coil. The output terminal of the wireless charging induction circuit is connected to the input terminal of the wireless charging receiving main control circuit, and the output terminal of the wireless charging receiving main control circuit is connected to the input terminal of the wireless charging load circuit. The output terminal of the wireless charging load circuit is connected to a load terminal. The wireless charging receiving main control circuit can receive the wireless charging current sensed by the wireless charging induction circuit and adjust the power output to the wireless charging load circuit according to different charging cable protocols. The beneficial effect of this invention is that it can replace a smartphone as a test object for wireless chargers, realizing the function of testing wireless chargers.

Description

Technical Field

[0001] This utility model relates to the field of test circuit technology, specifically to an RX wireless receiving circuit for wireless charging testing. Background Technology

[0002] Wireless charging is a technology that charges batteries without the need for physical cables. It utilizes the principles of magnetic resonance or electromagnetic induction to establish a wireless connection between the charger and the electronic device being charged, thereby transferring electrical energy. This technology provides users with a more convenient and flexible charging method, eliminating concerns about tangled or damaged cables. Due to its convenience, wireless charging is widely used in the smartphone industry. For smartphones to achieve wireless charging, a wireless charger and a smartphone that supports wireless charging are generally required.

[0003] In the current wireless charger production process, only products that pass the wireless charging function test can leave the factory. The existing testing method mainly uses smartphones that support wireless charging as test objects to test wireless chargers. However, this testing method requires one-to-one testing between smartphones and wireless chargers. If the testing speed needs to be accelerated, multiple smartphones need to be equipped, which is not only costly but also time-consuming, labor-intensive, and inefficient. Utility Model Content

[0004] To address the problems in the prior art, this utility model provides an RX wireless receiving circuit for wireless charging testing. By setting up a cooperating wireless charging receiving main control circuit, wireless charging induction circuit, and wireless charging load circuit in the RX wireless receiving circuit for wireless charging testing, it can replace the smartphone as the test object of the wireless charger, realize the function of testing the wireless charger, not only with low cost and simple operation, but also significantly improve the testing efficiency, and solve the problem of low testing efficiency and high testing cost caused by the need for one-to-one testing between smartphone and wireless charger in the prior art.

[0005] This utility model provides an RX wireless receiving circuit for wireless charging testing, including a wireless charging receiving main control circuit, a wireless charging induction circuit, and a wireless charging load circuit. The wireless charging induction circuit has a wireless charging receiving coil inside. The output terminal of the wireless charging induction circuit is connected to the input terminal of the wireless charging receiving main control circuit, and the output terminal of the wireless charging receiving main control circuit is connected to the input terminal of the wireless charging load circuit. The output terminal of the wireless charging load circuit is connected to a load terminal. The wireless charging receiving main control circuit can receive the wireless charging current sensed by the wireless charging induction circuit and adjust the power output to the wireless charging load circuit according to different charging cable protocols.

[0006] This utility model is further improved by including a wireless charging receiver main control circuit with a wireless charging main control chip U1, capacitors C8, C9, C10, and C15. The wireless charging main control chip U1 has 72 pins. Pin A6 of the wireless charging main control chip U1 is connected to pins A7, B6, and B7, one end of capacitor C8, one end of capacitor C9, one end of capacitor C10, one end of capacitor C15, and the wireless charging sensor... The output terminal of the circuit is connected, the other end of capacitor C8 is connected to pin C8 of the wireless charging main control chip U1, the other end of capacitor C9 is connected to pin D8 of the wireless charging main control chip U1, the other end of capacitor C10 is connected to pin E7 of the wireless charging main control chip U1, the other end of capacitor C15 is connected to pins A2, A3, B2, and B3 of the wireless charging main control chip U1 and the output terminal of the wireless charging induction circuit, and pins D2, E1, E2, E3, and F2 of the wireless charging main control chip U1 are connected to the input terminal of the wireless charging load circuit.

[0007] This utility model is further improved by including a coil interface CN1, capacitors C4, C5, C6, C7, C11, diode D1, and resistor R8 in the wireless charging induction circuit. The input terminal of the coil interface CN1 is connected to the wireless charging receiving coil. The output terminal of the coil interface CN1 has two pins. The first pin of the coil interface CN1 is connected to one end of capacitor C4, one end of capacitor C5, one end of capacitor C6, one end of capacitor C7, one end of capacitor C11, and the positive terminal of diode D1. The other end of capacitor C4 is connected to the other end of capacitor C5, the other end of capacitor C6, and the other end of diode D8. The other end of C7, the other end of capacitor C11, pin A6 of the wireless charging main control chip U1, pin A7 of the wireless charging main control chip U1, pin B6 of the wireless charging main control chip U1, pin B7 of the wireless charging main control chip U1, one end of capacitor C8, one end of capacitor C9, one end of capacitor C10, and one end of capacitor C15 are connected. The negative terminal of diode D1 is connected to one end of resistor R8, and the other end of resistor R8 is grounded. Pin 2 of coil interface CN1 is connected to the other end of capacitor C15 and pins A2, A3, B2, and B3 of the wireless charging main control chip U1.

[0008] This utility model is further improved by including a load interface CN2, resistors R2 and R4, and capacitors C12, C13, C14, C16, C17, and C18 in the wireless charging load circuit. The output terminal of the load interface CN2 is connected to a load terminal, and the input terminal of the load interface CN2 has four pins. The third pin of the load interface CN2 is connected to the fourth pin of the load interface CN2, one end of capacitor C12, one end of capacitor C13, one end of capacitor C14, one end of resistor R2, one end of resistor R4, and the G2 pin of the wireless charging main control chip U1. The other end of resistor R2 is connected to the other end of resistor R4, one end of capacitor C16, one end of capacitor C17, one end of capacitor C18, and the F3, D2, E1, E2, E3, and F2 pins of the wireless charging main control chip U1.

[0009] This utility model is further improved, and the model number of the wireless charging main control chip U1 is NU1652WYYB.

[0010] Compared with the prior art, the beneficial effects of this utility model are: it provides an RX wireless receiving circuit for wireless charging testing. By setting up a wireless charging receiving main control circuit, a wireless charging sensing circuit, and a wireless charging load circuit that cooperate with each other in the RX wireless receiving circuit for wireless charging testing, the wireless charging receiving main control circuit can receive the wireless charging current sensed by the wireless charging sensing circuit and adjust the power output to the wireless charging load circuit according to different charging cable protocols. It can replace the smartphone as the test object of the wireless charger and realize the function of testing the wireless charger. It is not only low in cost and simple to operate, but also greatly improves the testing efficiency. It solves the problem of low testing efficiency and high testing cost caused by the need for one-to-one testing between smartphone and wireless charger in the prior art. Attached Figure Description

[0011] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a circuit diagram of an RX wireless receiving circuit for wireless charging testing according to the present invention. Detailed Implementation

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0014] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0016] like Figure 1As shown, this utility model provides an RX wireless receiving circuit for wireless charging testing, including a wireless charging receiving main control circuit, a wireless charging induction circuit, and a wireless charging load circuit. The wireless charging induction circuit contains a wireless charging receiving coil. The output terminal of the wireless charging induction circuit is connected to the input terminal of the wireless charging receiving main control circuit, and the output terminal of the wireless charging receiving main control circuit is connected to the input terminal of the wireless charging load circuit. The output terminal of the wireless charging load circuit is connected to a load terminal. In this embodiment, the wireless charging receiving main control circuit can receive the wireless charging current sensed by the wireless charging induction circuit and adjust the power output to the wireless charging load circuit according to different charging cable protocols. It can replace a smartphone as a test object for wireless chargers, realizing the function of testing wireless chargers. It is not only low-cost and simple to operate, but also significantly improves testing efficiency. Moreover, it can communicate bidirectionally with the transmitting system through ASK and FSK modulation methods, and its communication protocol conforms to the WPC (Wireless Power Consortium) standard. A 2-pin connector is used to connect the wireless charging receiver coil, and a 4-pin connector is used to connect the load terminal. Different receiving power and communication protocols can be selected via a 4-bit DIP switch on the board. This allows testing of products with specific output power and protocols from 5W to 50W, such as car wireless chargers and mobile phone wireless chargers. Test items include output voltage, output current, output power, output efficiency, and FOD (Foreign Object Detection). Standard protection functions are integrated, including input undervoltage lockout, short circuit protection, overvoltage protection, overcurrent protection, overpower protection, and overtemperature protection. These protection mechanisms further enhance the reliability of the system solution.

[0017] like Figure 1As shown, the wireless charging receiver main control circuit includes a wireless charging main control chip U1, capacitors C8, C9, C10, and C15. The wireless charging main control chip U1 is model NU1652WYYB and has 72 pins. Pins A6, A7, B6, and B7 of the wireless charging main control chip U1, one end of capacitor C8, one end of capacitor C9, one end of capacitor C10, and capacitor C15 are also included. One end of capacitor C8 is connected to the output terminal of the wireless charging induction circuit. The other end of capacitor C9 is connected to pin C8 of the wireless charging main control chip U1. The other end of capacitor C9 is connected to pin D8 of the wireless charging main control chip U1. The other end of capacitor C10 is connected to pin E7 of the wireless charging main control chip U1. The other end of capacitor C15 is connected to pins A2, A3, B2, and B3 of the wireless charging main control chip U1 and the output terminal of the wireless charging induction circuit. Pins D2, E1, E2, E3, and F2 of the wireless charging main control chip U1 are connected to the input terminal of the wireless charging load circuit. The wireless charging induction circuit includes a coil interface CN1, capacitors C4, C5, C6, C7, and C11, a diode D1, and a resistor R8. The input terminal of the coil interface CN1 is connected to the wireless charging receiving coil. The output terminal of the coil interface CN1 has two pins. The first pin of the coil interface CN1 is connected to one end of each of the following capacitors: C4, C5, C6, C7, and C11, and the positive terminal of diode D1. The other end of capacitor C4 is connected to the other ends of capacitors C5, C6, and C7. One end of capacitor C11, the other end of capacitor C11, pin A6 of wireless charging main control chip U1, pin A7 of wireless charging main control chip U1, pin B6 of wireless charging main control chip U1, pin B7 of wireless charging main control chip U1, one end of capacitor C8, one end of capacitor C9, one end of capacitor C10, and one end of capacitor C15 are connected. The negative terminal of diode D1 is connected to one end of resistor R8, and the other end of resistor R8 is grounded. Pin 2 of coil interface CN1 is connected to the other end of capacitor C15 and pins A2, A3, B2, and B3 of wireless charging main control chip U1.The wireless charging load circuit includes a load interface CN2, resistors R2 and R4, and capacitors C12, C13, C14, C16, C17, and C18. The output of the load interface CN2 is connected to a load terminal, and the input of the load interface CN2 has four pins. The third pin of the load interface CN2 is connected to the fourth pin of the load interface CN2, one end of capacitors C12, C13, and C14, one end of resistors R2 and R4, and the G2 pin of the wireless charging main control chip U1. The other end of resistor R2 is connected to the other end of resistor R4, one end of capacitors C16, C17, and C18, and the F3, D2, E1, E2, E3, and F2 pins of the wireless charging main control chip U1. In this embodiment, the wireless charging receiver main control circuit receives the wireless charging current sensed by the wireless charging induction circuit and adjusts the power output to the wireless charging load circuit according to different charging cable protocols. The wireless charging induction circuit senses the wireless charger under test and generates current, while the wireless charging load circuit serves as a load terminal.

[0018] As can be seen from the above, this utility model provides an RX wireless receiving circuit for wireless charging testing. By setting up a wireless charging receiving main control circuit, a wireless charging sensing circuit, and a wireless charging load circuit that cooperate with each other in the RX wireless receiving circuit for wireless charging testing, the wireless charging receiving main control circuit can receive the wireless charging current sensed by the wireless charging sensing circuit and adjust the power output to the wireless charging load circuit according to different charging cable protocols. It can replace the smartphone as the test object of the wireless charger and realize the function of testing the wireless charger. It is not only low in cost and simple to operate, but also greatly improves the testing efficiency. It solves the problem of low testing efficiency and high testing cost caused by the need for one-to-one testing between smartphone and wireless charger in the prior art.

[0019] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. An RX wireless receiving circuit for wireless charging test, characterized in that: The device includes a wireless charging receiver main control circuit, a wireless charging induction circuit, and a wireless charging load circuit. The wireless charging induction circuit contains a wireless charging receiving coil. The output terminal of the wireless charging induction circuit is connected to the input terminal of the wireless charging receiver main control circuit, and the output terminal of the wireless charging receiver main control circuit is connected to the input terminal of the wireless charging load circuit. The output terminal of the wireless charging load circuit is connected to a load terminal. The wireless charging receiver main control circuit can receive the wireless charging current sensed by the wireless charging induction circuit and adjust the power output to the wireless charging load circuit according to different charging cable protocols.

2. The RX wireless receiving circuit for wireless charging test according to claim 1, wherein: The wireless charging receiver main control circuit includes a wireless charging main control chip U1, capacitors C8, C9, C10, and C15. The wireless charging main control chip U1 has 72 pins. Pins A6, A7, B6, and B7 of the wireless charging main control chip U1, one end of capacitor C8, one end of capacitor C9, one end of capacitor C10, one end of capacitor C15, and the output terminal of the wireless charging induction circuit are also included. The capacitor C8 is connected to pin C8 of the wireless charging main control chip U1, the capacitor C9 is connected to pin D8 of the wireless charging main control chip U1, the capacitor C10 is connected to pin E7 of the wireless charging main control chip U1, the capacitor C15 is connected to pins A2, A3, B2, and B3 of the wireless charging main control chip U1 and the output terminal of the wireless charging induction circuit, and the capacitor C15 is connected to pins D2, E1, E2, E3, and F2 of the wireless charging main control chip U1 and the input terminal of the wireless charging load circuit.

3. The RX wireless receiving circuit for wireless charging test according to claim 2, wherein: The wireless charging induction circuit includes a coil interface CN1, capacitors C4, C5, C6, C7, C11, a diode D1, and a resistor R8. The input terminal of the coil interface CN1 is connected to the wireless charging receiving coil. The output terminal of the coil interface CN1 has two pins. The first pin of the coil interface CN1 is connected to one end of each of the following capacitors: C4, C5, C6, C7, and C11, and the positive terminal of the diode D1. The other end of capacitor C4 is connected to the other ends of each of the following capacitors: C5, C6, and C7. The other end of capacitor C11, pin A6 of wireless charging main control chip U1, pin A7 of wireless charging main control chip U1, pin B6 of wireless charging main control chip U1, pin B7 of wireless charging main control chip U1, one end of capacitor C8, one end of capacitor C9, one end of capacitor C10, and one end of capacitor C15 are connected. The negative terminal of diode D1 is connected to one end of resistor R8, and the other end of resistor R8 is grounded. Pin 2 of coil interface CN1 is connected to the other end of capacitor C15 and pins A2, A3, B2, and B3 of wireless charging main control chip U1.

4. The RX wireless receiving circuit for wireless charging test according to claim 3, wherein: The wireless charging load circuit includes a load interface CN2, resistors R2 and R4, and capacitors C12, C13, C14, C16, C17, and C18. The output of the load interface CN2 is connected to a load terminal. The input of the load interface CN2 has four pins. Pin 3 of the load interface CN2 is connected to pin 4 of the load interface CN2, one end of capacitor C12, one end of capacitor C13, one end of capacitor C14, one end of resistor R2, one end of resistor R4, and pin G2 of the wireless charging main control chip U1. The other end of resistor R2 is connected to the other end of resistor R4, one end of capacitor C16, one end of capacitor C17, one end of capacitor C18, and pins F3, D2, E1, E2, E3, and F2 of the wireless charging main control chip U1.

5. The RX wireless receiving circuit for wireless charging test according to claim 4, wherein: The model number of the wireless charging main control chip U1 is NU1652WYYB.

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