Wearable device wireless charging test device and system

Abstract

The utility model discloses a wireless charging test device and system for wearable equipment. The wearable device wireless charging test device comprises a frequency simulation module which is connected to a receiving coil of a wearable device through a first test point and a second test point; the frequency simulation module is used for providing different resonant frequencies for the receiving coil; the charging simulation module comprises a charging simulation unit and a transmitting coil, the charging simulation unit is connected with the transmitting coil, and the transmitting coil is further coupled with the receiving coil; the charging simulation module is used for providing a charging magnetic field; the control module is connected with the frequency simulation module, the charging simulation unit, the transmitting coil and the receiving coil. And the control module is used for controlling the resonant frequency generated by the frequency simulation module and controlling the start and stop of the charging simulation module. By adopting the scheme, the production test efficiency of the wearable equipment can be improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, and in particular to a wireless charging test device and system for wearable devices. Background Technology

[0002] As wearable devices increasingly demand higher standards in terms of power quality, security, reliability, convenience, immediacy, and adaptability to special occasions and geographical environments, contact-based power transmission methods are becoming increasingly inadequate. Wireless charging technology can reduce safety hazards and provide convenience to people's lives. Wireless charging utilizes the principle of electromagnetic induction, similar to a transformer. It involves placing a coil at both the transmitting and receiving ends. The transmitting coil emits electromagnetic signals under the influence of electricity, while the receiving coil receives and converts these signals into current, thus achieving wireless charging. After production, wearable devices require charging and energy absorption testing to determine if they meet product quality requirements.

[0003] However, the wireless charging performance testing of wearable devices requires determination through multiple parameters, which leads to low efficiency in the production testing of wearable devices. Utility Model Content

[0004] This invention provides a wireless charging testing device and system for wearable devices to improve the production testing efficiency of wearable devices.

[0005] According to one aspect of the present invention, a wireless charging testing device for wearable devices is provided. The wearable device includes a receiving coil, which has a first test point and a second test point. The wireless charging testing device for wearable devices comprises:

[0006] A frequency simulation module is connected to the receiving coil of the wearable device via the first test point and the second test point; the frequency simulation module is used to provide different resonant frequencies for the receiving coil.

[0007] A charging simulation module includes a charging simulation unit and a transmitting coil. The charging simulation unit is connected to the transmitting coil, and the transmitting coil is also coupled to the receiving coil. The charging simulation module is used to provide a charging magnetic field.

[0008] A control module is provided, which is connected to the frequency simulation module, the charging simulation unit, the transmitting coil, and the receiving coil. The control module is used to control the resonant frequency generated by the frequency simulation module and to control the start and stop of the charging simulation module. The performance parameters include impedance, inductive reactance, parasitic capacitance, charging efficiency, and coupling coefficient.

[0009] Optionally, the frequency simulation module includes: an excitation power supply, a first probe, a first switch, a second probe, an impedance transformation component, a first capacitor, a second switch, a third switch, a first resistor, a second capacitor, a second resistor, and a fourth switch;

[0010] The first end of the excitation power supply is connected to the first probe, the second end of the excitation power supply is connected to the first end of the first switch, the second end of the first switch is connected to the second probe, the first end of the impedance transformation component is connected to the first probe, the second end of the impedance transformation component is connected to the second probe, the first end of the first capacitor is connected to the first probe, the second end of the first capacitor is connected to the first end of the second switch, the second end of the second switch is connected to the second probe, the first end of the third switch is connected to the first end of the first resistor, the second end of the first resistor is connected to the first end of the second capacitor, the second end of the second capacitor is connected to the first end of the second resistor, the second end of the second resistor is connected to the second probe, the first end of the fourth switch is connected to the second end of the third switch, the second end of the fourth switch is connected to the second end of the second capacitor, the first probe is also connected to the first test point, and the second probe is also connected to the second test point.

[0011] Optionally, the charging simulation unit includes: a rectifier subunit and an inverter subunit;

[0012] The first terminal of the rectifier subunit is connected to the mains power, the second terminal of the rectifier subunit is connected to the first terminal of the inverter subunit, the control terminal of the rectifier subunit is connected to the control module, and the second terminal of the inverter subunit is connected to the transmitting coil.

[0013] The rectifier submodule is used to convert AC mains power into DC power; the inverter subunit is used to convert the DC power into AC charging power required for wireless charging.

[0014] Optionally, the control module includes: a first acquisition unit, an amplification unit, a control unit, and a second acquisition unit;

[0015] The first acquisition unit is connected to the receiving coil, the second acquisition unit is connected to the transmitting coil, both the first acquisition unit and the second acquisition unit are connected to the amplification unit, and the amplification unit is also connected to the control unit;

[0016] The first acquisition unit is used to sample the receiving coil to obtain first sampled data; the second acquisition unit is used to sample the transmitting coil to obtain second sampled data; the amplification unit is used to amplify the sampled data from the first acquisition unit and the sampled data from the second acquisition unit; the control unit is used to calculate the performance parameters of the receiving coil at different resonant frequencies based on the first sampled data and the second sampled data, control the resonant frequency generated by the frequency simulation module, and control the start and stop of the charging simulation module.

[0017] Optionally, both the first acquisition unit and the second acquisition unit include an analog-to-digital converter.

[0018] Optionally, the control unit includes an industrial control computer.

[0019] According to another aspect of the present invention, a wireless charging test system for wearable devices is also provided. The wireless charging test system for wearable devices includes: a support platform, a carrier, a lifting mechanism, a fixing plate, and the wireless charging test device for wearable devices described in any of the above embodiments.

[0020] The vehicle is mounted on the support platform, one end of the lifting mechanism is fixed to the support platform, the other end of the lifting mechanism is connected to the fixed plate, and the wearable device wireless charging test device is fixed to the fixed plate on the side near the vehicle.

[0021] The support platform is used to support the carrier and the lifting mechanism; the carrier is used to fix the wearable device; the lifting mechanism is used to adjust the distance between the transmitting coil of the charging simulation module of the wearable device wireless charging test device and the wearable device; the fixing plate is used to fix the wearable device wireless charging test device.

[0022] Optionally, the lifting mechanism includes a lifting cylinder.

[0023] The frequency simulation module and charging simulation module of this embodiment simulate different operating conditions of the receiving coil, and the control module calculates the test parameters of the receiving coil under different operating conditions. The wearable device wireless charging test device provided by this embodiment can directly measure multiple parameters of the wearable device during charging, which is beneficial to improving the production testing efficiency of wearable devices.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a wireless charging test device for wearable devices provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a frequency simulation module provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of another wireless charging test device for wearable devices provided in an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of another wearable device wireless charging test device provided in this utility model embodiment;

[0030] Figure 5 This is a schematic diagram of a wearable device wireless charging test system provided in an embodiment of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] This invention provides a wireless charging testing device for wearable devices. This device is used for testing the charging performance of wearable devices. In this embodiment, the frequency simulation module and charging simulation module simulate different operating conditions of the receiving coil, and the control module calculates the test parameters of the receiving coil under different operating conditions, determining the charging performance of the wearable device based on the test parameters. Figure 1 This is a schematic diagram of a wireless charging testing device for wearable devices provided in an embodiment of this utility model. (Refer to...) Figure 1 The wearable device 210 includes: device circuit 212 and receiving coil 211, the receiving coil 211 is provided with a first test point and a second test point; the wearable device wireless charging test device includes: frequency simulation module 110, charging simulation module 120 and control module 130.

[0034] The frequency simulation module 110 is connected to the receiving coil 211 of the wearable device 210 through a first test point and a second test point; the frequency simulation module 110 is used to provide different resonant frequencies for the receiving coil 211; the charging simulation module 120 includes a charging simulation unit 122 and a transmitting coil 121, the charging simulation unit 122 is connected to the transmitting coil 121, and the transmitting coil 121 is also coupled to the receiving coil 211; the charging simulation module 120 is used to provide a charging magnetic field; the control module 130 is connected to the frequency simulation module 110, the charging simulation unit 122, the transmitting coil 121, and the receiving coil 211 respectively; the control module 130 is used to control the resonant frequency generated by the frequency simulation module 110, and to control the start and stop of the charging simulation module 120; wherein, the performance parameters include impedance, inductive reactance, parasitic capacitance, charging efficiency, and coupling coefficient.

[0035] Specifically, the control module 130 controls the charging simulation module 120 to turn off and controls the frequency simulation module 110 to generate different resonant frequencies. At this time, no charging magnetic field is generated in the charging simulation module 120. The control module 130 acquires the impedance, inductive reactance, and parasitic capacitance of the receiving coil 211 at different resonant frequencies. Upon acquiring these values, the control module 130 controls the charging simulation module 120 to turn on and continues to control the frequency simulation module 110 to generate different resonant frequencies, thereby enabling the wearable device 210 to charge under different operating conditions (resonant frequencies). During charging, the control module 130 acquires the voltage of the receiving coil 211 and the voltage of the transmitting coil 121, and calculates the charging efficiency and coupling coefficient of the receiving coil 211 based on these voltages. Optionally, in practical applications, the charging efficiency and coupling coefficient of the receiving coil 211 can also be calculated based on the current during charging of the wearable device. The control module 130 acquires the current of the receiving coil 211 and the current of the transmitting coil 121, and calculates the charging efficiency and coupling coefficient of the receiving coil 211 based on these currents. It should be noted that the control module 130 can acquire the current of the receiving coil 211 and the transmitting coil 121, for example, through a current sensor, and the control module 130 can acquire the voltage of the receiving coil 211 and the transmitting coil 121, for example, through a voltage sensor. The control module 130 also evaluates the charging performance of the wearable device 210 based on the performance parameters of the receiving coil 211 under different operating conditions (impedance, inductive reactance, parasitic capacitance, charging efficiency, and coupling coefficient), thereby determining whether the wearable device 210 meets the quality requirements.

[0036] The frequency simulation module 110 and charging simulation module 120 of this embodiment simulate different operating conditions of the receiving coil 211, and the control module 110 calculates the test parameters of the receiving coil 211 under different operating conditions. The wearable device wireless charging test device provided by this embodiment can directly measure multiple parameters of the wearable device 210 during charging, which is beneficial to improving the production testing efficiency of the wearable device 210.

[0037] Figure 2 This is a schematic diagram of a frequency simulation module provided in an embodiment of this utility model. Optionally, based on the above embodiment, refer to... Figure 2 The frequency simulation module 110 includes: an excitation power supply US, a first probe T1, a first switch S1, a second probe T2, an impedance transformation component Z1, a first capacitor C1, a second switch S2, a third switch S3, a first resistor R1, a second capacitor C2, a second resistor R2, and a fourth switch S4.

[0038] The first terminal of the excitation power supply US is connected to the first probe T1, the second terminal of the excitation power supply US is connected to the first terminal of the first switch S1, the second terminal of the first switch S1 is connected to the second probe T2, the first terminal of the impedance transformation component Z1 is connected to the first probe T1, the second terminal of the impedance transformation component Z1 is connected to the second probe T2, the first terminal of the first capacitor C1 is connected to the first probe T1, the second terminal of the first capacitor C2 is connected to the first terminal of the second switch S2, the second terminal of the second switch S2 is connected to the second probe T2, the first terminal of the third switch S3 is connected to the first terminal of the first resistor R1, the second terminal of the first resistor R1 is connected to the first terminal of the second capacitor C2, the second terminal of the second capacitor C2 is connected to the first terminal of the second resistor R2, the second terminal of the second resistor R2 is connected to the second probe T2, the first terminal of the fourth switch S4 is connected to the second terminal of the third switch S3, the second terminal of the fourth switch S4 is connected to the second terminal of the second capacitor C2, the first probe T1 is also connected to the first test point, and the second probe T2 is also connected to the second test point.

[0039] Specifically, the control module 130 controls the first switch S1 to close and controls the excitation power supply Us to generate various different DC and AC excitation signals. The control module 130 controls the impedance transformation component Z1 to generate different impedances, causing changes in the circuit connected to the receiving coil 211, thereby producing resonances at different frequencies. The control module 130 samples the receiving coil 211 at different resonant frequencies to calculate the impedance, inductive reactance, and parasitic capacitance of the receiving coil 211 at different resonant frequencies.

[0040] The impedance transformation component Z1 includes a third resistor R3, a fifth switch S5, a fourth resistor R4, a sixth switch S6, a seventh switch S7, and a seventh resistor R5. The first end of the third resistor R3 is connected to the first probe T1, the second end of the third resistor R3 is connected to the first end of the fifth switch S5, and the second end of the fifth switch S5 is connected to the second probe T2. The first end of the fourth resistor R4 is connected to the first probe T1, the second end of the fourth resistor R4 is connected to the first end of the sixth switch S6, and the second end of the sixth switch S6 is connected to the second probe T2. The first end of the fifth resistor R5 is connected to the first probe T1, the second end of the fifth resistor R5 is connected to the first end of the seventh switch S7, and the second end of the seventh switch S7 is connected to the second probe T2.

[0041] When the control module 130 acquires the impedance, inductive reactance, and parasitic capacitance of the receiving coil 211 at different resonant frequencies, it controls the first switch S1 to open, controls the charging simulation module 120 to turn on, and continues to generate different impedances by controlling the impedance transformation component Z1 to cause the circuit connected to the receiving coil 211 to resonate at different frequencies, thereby enabling the wearable device 210 to charge under different operating conditions (resonant frequencies). During charging of the wearable device, the control module 130 acquires the voltage of the receiving coil 211 and the voltage of the transmitting coil 121 respectively, and calculates the charging efficiency and coupling coefficient of the receiving coil 211 based on the voltages of the receiving coil 211 and the transmitting coil 121.

[0042] Figure 3 This is a schematic diagram of another wireless charging testing device for wearable devices provided in an embodiment of this utility model. Optionally, based on the above embodiments, refer to... Figure 3 The charging simulation unit 122 includes a rectifier subunit 1221 and an inverter subunit 1222.

[0043] The first terminal of the rectifier subunit 1221 is connected to the mains power, the second terminal of the rectifier subunit 1221 is connected to the first terminal of the inverter subunit 1222, the control terminal of the rectifier subunit 1221 is connected to the control module 130, and the second terminal of the inverter subunit 1222 is connected to the transmitting coil 121. The rectifier subunit 1221 is used to convert the AC power of the mains power into DC power. The inverter subunit 1222 is used to convert the DC power into the AC power required for wireless charging.

[0044] Specifically, the rectifier subunit 1221 rectifies the mains power to convert the AC power supplied by the mains into DC power. The inverter subunit 1222 obtains the DC power rectified by the rectifier subunit 1221 and converts the DC power into charging AC power according to the wireless charging protocol of the wearable device 210, so that the transmitting coil 121 generates the charging magnetic field required for wireless charging of the wearable device 210.

[0045] Figure 4 This is a schematic diagram of another wearable device wireless charging testing device provided by an embodiment of the present invention. Optionally, based on the above embodiments, refer to... Figure 4 The control module includes: a first acquisition unit 131, an amplification unit 132, a control unit 133, and a second acquisition unit 134.

[0046] The first acquisition unit 131 is connected to the receiving coil 211, and the second acquisition unit 134 is connected to the transmitting coil 121. Both the first acquisition unit 131 and the second acquisition unit 134 are connected to the amplification unit 132, which is also connected to the control unit 133. The first acquisition unit 131 is used to sample the receiving coil 211 to obtain first sampled data. The second acquisition unit 134 is used to sample the transmitting coil 121 to obtain second sampled data. The amplification unit 132 is used to amplify the sampled data from the first acquisition unit 131 and the sampled data from the second acquisition unit 134. The control unit 133 is used to calculate the performance parameters of the receiving coil 211 at different resonant frequencies based on the first and second sampled data, control the resonant frequency generated by the frequency simulation module 110, and control the start and stop of the charging simulation module 120.

[0047] Specifically, the first acquisition unit 131 samples the receiving coil 211 under different operating conditions to obtain first sampled data. The second acquisition unit 134 samples the transmitting coil 121 under different operating conditions to obtain second sampled data. The amplification module 132 acquires the first and second sampled data and amplifies them. The control unit 133 calculates the performance parameters of the receiving coil 211 based on the first and second sampled data, and evaluates the charging performance of the wearable device 210 based on the performance parameters, thereby determining whether the wearable device 210 meets the quality requirements. For example, both the first acquisition unit 131 and the second acquisition unit 134 can be analog-to-digital converters, and the control unit can be an industrial control computer.

[0048] This utility model embodiment also provides a wireless charging test system for wearable devices. Figure 5 This is a schematic diagram of a wearable device wireless charging test system provided in an embodiment of this utility model. (Refer to...) Figure 5 The wearable device wireless charging test system includes: a support platform 10, a carrier 20, a lifting mechanism 30, a fixing plate 40, and a wearable device wireless charging test device 50 provided in any of the above embodiments.

[0049] The carrier 20 is mounted on the support platform 10. One end of the lifting mechanism 30 is fixed to the support platform 10, and the other end of the lifting mechanism 30 is connected to the fixing plate 40. The wearable device wireless charging test device 50 is fixed to the fixing plate 40 near the carrier 20. The support platform 10 is used to support the carrier 20 and the lifting mechanism 30. The carrier 20 is used to fix the wearable device 210. The lifting mechanism 30 is used to adjust the distance between the transmitting coil 121 of the charging simulation module 120 of the wearable device wireless charging test device 50 and the wearable device 210. The fixing plate 40 is used for the wearable device wireless charging test device 50. For example, the lifting mechanism 30 can be a lifting cylinder.

[0050] It should be noted that the wearable device wireless charging test system provided in this embodiment has the beneficial effects of the wearable device wireless charging test device 50 provided in any of the above embodiments, and will not be repeated here.

[0051] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0052] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wireless charging testing device for wearable devices, characterized in that, The wearable device includes a receiving coil, which has a first test point and a second test point; the wearable device wireless charging test device includes: A frequency simulation module is connected to the receiving coil of the wearable device via the first test point and the second test point; the frequency simulation module is used to provide different resonant frequencies for the receiving coil. A charging simulation module includes a charging simulation unit and a transmitting coil. The charging simulation unit is connected to the transmitting coil, and the transmitting coil is also coupled to the receiving coil. The charging simulation module is used to provide a charging magnetic field. A control module is provided, which is connected to the frequency simulation module, the charging simulation unit, the transmitting coil, and the receiving coil. The control module is used to control the resonant frequency generated by the frequency simulation module and to control the start and stop of the charging simulation module. The performance parameters include impedance, inductive reactance, parasitic capacitance, charging efficiency, and coupling coefficient.

2. The wearable device wireless charging test device according to claim 1, characterized in that, The frequency simulation module includes: an excitation power supply, a first probe, a first switch, a second probe, an impedance transformation component, a first capacitor, a second switch, a third switch, a first resistor, a second capacitor, a second resistor, and a fourth switch; The first end of the excitation power supply is connected to the first probe, the second end of the excitation power supply is connected to the first end of the first switch, the second end of the first switch is connected to the second probe, the first end of the impedance transformation component is connected to the first probe, the second end of the impedance transformation component is connected to the second probe, the first end of the first capacitor is connected to the first probe, the second end of the first capacitor is connected to the first end of the second switch, the second end of the second switch is connected to the second probe, the first end of the third switch is connected to the first end of the first resistor, the second end of the first resistor is connected to the first end of the second capacitor, the second end of the second capacitor is connected to the first end of the second resistor, the second end of the second resistor is connected to the second probe, the first end of the fourth switch is connected to the second end of the third switch, the second end of the fourth switch is connected to the second end of the second capacitor, the first probe is also connected to the first test point, and the second probe is also connected to the second test point.

3. The wearable device wireless charging testing device according to claim 1, characterized in that, The charging simulation unit includes: a rectifier subunit and an inverter subunit; The first terminal of the rectifier subunit is connected to the mains power, the second terminal of the rectifier subunit is connected to the first terminal of the inverter subunit, the control terminal of the rectifier subunit is connected to the control module, and the second terminal of the inverter subunit is connected to the transmitting coil. The rectifier subunit is used to convert AC mains power into DC power; the inverter subunit is used to convert the DC power into AC charging power required for wireless charging.

4. The wearable device wireless charging test device according to claim 1, characterized in that, The control module includes: a first acquisition unit, an amplification unit, a control unit, and a second acquisition unit; The first acquisition unit is connected to the receiving coil, the second acquisition unit is connected to the transmitting coil, both the first acquisition unit and the second acquisition unit are connected to the amplification unit, and the amplification unit is also connected to the control unit; The first acquisition unit is used to sample the receiving coil to obtain first sampled data; the second acquisition unit is used to sample the transmitting coil to obtain second sampled data; the amplification unit is used to amplify the sampled data from the first acquisition unit and the sampled data from the second acquisition unit; the control unit is used to calculate the performance parameters of the receiving coil at different resonant frequencies based on the first sampled data and the second sampled data, control the resonant frequency generated by the frequency simulation module, and control the start and stop of the charging simulation module.

5. The wearable device wireless charging test apparatus according to claim 4, characterized in that, Both the first acquisition unit and the second acquisition unit include an analog-to-digital converter.

6. The wearable device wireless charging test apparatus according to claim 4, characterized in that, The control unit includes an industrial control computer.

7. A wireless charging testing system for wearable devices, characterized in that, include: The support platform, carrier, lifting mechanism, fixing plate, and wearable device wireless charging test device as described in any one of claims 1-6; The vehicle is mounted on the support platform, one end of the lifting mechanism is fixed to the support platform, and the other end of the lifting mechanism is connected to the fixed plate. The wearable device wireless charging test device is fixed to the fixed plate on the side near the vehicle. The support platform is used to support the vehicle and the lifting mechanism; The carrier is used to fix the wearable device; the lifting mechanism is used to adjust the distance between the transmitting coil of the charging simulation module of the wearable device wireless charging test device and the wearable device; the fixing plate is used to fix the wearable device wireless charging test device.

8. The wearable device wireless charging test system according to claim 7, characterized in that, The lifting mechanism includes a lifting cylinder.

Images