Wireless charging test circuit, electronic equipment and test method

Abstract

The embodiment of the invention relates to the technical field of wireless charging, and discloses a wireless charging test circuit, electronic equipment and a test method. The wireless charging test circuit comprises a wireless charging receiving chip and a current loading circuit, the wireless charging receiving chip comprises a rectification circuit, a control circuit and a signal demodulation circuit, and the control circuit responds to a result of matching a reference mode identifier with a preset target mode identifier. And configuring the rectification circuit to enter a target rectification mode and the current loading circuit to enter a target loading mode, and generating a rectification test result according to the rectification output information and the power loading information. According to the embodiment of the invention, a demodulation test circuit and a rectification test circuit do not need to be additionally built, and the test of the signal demodulation circuit and the rectification circuit can be completed in the rectification mode configuration process, so that the test efficiency of the signal demodulation circuit can be improved, and the test cost is reduced. And whether the rectifying circuit can normally work in the target rectifying mode or not can be reliably tested.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless charging technology, and specifically to a wireless charging test circuit, electronic equipment, and a test method. Background Art

[0002] The wireless charging device includes a transmitting coil, a wireless charging transmitting chip, a receiving coil and a wireless charging test circuit. The wireless charging transmitting chip radiates a changing magnetic field through the transmitting coil. The wireless charging test circuit generates electrical energy based on the receiving coil coupling the changing magnetic field to meet the power requirements of various downstream loads.

[0003] Before the wireless charging test circuit leaves the factory, it needs to pass the test before it can be put into the product use stage. Usually, the wireless charging test circuit includes a rectifier circuit and a signal demodulation circuit. The relevant technology requires the use of different discrete components to build the rectifier test circuit and the demodulation test circuit respectively. The rectifier test circuit is used to test the rectifier circuit, and the demodulation test circuit is used to test the signal demodulation circuit. This test method is relatively cumbersome and the test efficiency is not high. Summary of the invention

[0004] An object of the embodiments of the present application is to provide a wireless charging test circuit, an electronic device and a test method to solve the technical problem of low test efficiency in related technologies.

[0005] In a first aspect, an embodiment of the present application provides a wireless charging test circuit, including a wireless charging receiving chip and a current loading circuit, wherein the wireless charging receiving chip includes:

[0006] A rectifier circuit, electrically connected to the current loading circuit;

[0007] a control circuit, electrically connected to the rectifier circuit and the current loading circuit respectively, and configured to send mode configuration information to the wireless charging transmitter chip, so that the wireless charging transmitter chip modulates the reference mode identifier into the AC power supply to obtain test mode information;

[0008] The signal demodulation circuit is electrically connected to the control circuit and is configured to demodulate a reference mode identifier from the test mode information. The control circuit configures the rectifier circuit to enter a target rectifier mode and the current load circuit to enter a target load mode in response to the result that the reference mode identifier matches a preset target mode identifier. The target load mode corresponds to the target rectifier mode. The rectifier circuit rectifies the AC power output by the wireless charging transmitter chip according to the target rectifier mode to obtain rectifier output information. The current load circuit loads power from the rectifier circuit in the target load mode to obtain power load information. The control circuit generates a rectifier test result according to the rectifier output information and the power load information.

[0009] Optionally, the control circuit is configured to send rectification mode information to the rectification circuit in response to a result that the reference mode identifier matches a preset target mode identifier, so that the rectification circuit enters the target rectification mode in response to the rectification mode information.

[0010] Optionally, the target mode identifier includes a diode rectification identifier, a half-bridge rectification identifier and a full-bridge rectification identifier, and the rectification mode information includes diode rectification information, half-bridge rectification information and full-bridge rectification information;

[0011] If the reference mode identifier is the diode rectification identifier, the control circuit sends diode rectification information to the rectification circuit to make the rectification circuit enter the diode rectification mode;

[0012] If the reference mode identifier is the half-bridge rectification identifier, the control circuit sends half-bridge rectification information to the rectification circuit to make the rectification circuit enter a half-bridge rectification mode;

[0013] If the reference mode identifier is the full-bridge rectification identifier, the control circuit sends full-bridge rectification information to the rectification circuit to make the rectification circuit enter a full-bridge rectification mode.

[0014] Optionally, the rectification output information includes an output voltage, the power supply load information includes a load current, and the control circuit is configured to: determine a first comparison result based on the output voltage and a preset target voltage, determine a second comparison result based on the load current and a preset target current, and generate a rectification test result based on the first comparison result and the second comparison result.

[0015] Optionally, the rectification test result includes a rectification failure result and a rectification success result;

[0016] If the first comparison result is used to indicate that the output voltage is equal to the target voltage, and the load current is equal to the target current, a rectification success result is generated;

[0017] If the first comparison result is used to indicate that the output voltage is not equal to the target voltage, and / or the load current is not equal to the target current, a rectification failure result is generated.

[0018] Optionally, the control circuit is configured to generate load mode information according to the target rectification mode, and send the load mode information to the current loading circuit so that the current loading circuit loads power from the rectification circuit under the target loading mode to obtain power loading information.

[0019] Optionally, the rectifier output information includes a rectifier output current, the load mode information includes a reference voltage corresponding to the target rectifier mode, the power supply load information includes a load current, and the current load circuit includes:

[0020] a current sampling unit, electrically connected to the rectifier circuit, and configured to sample the rectifier output current and output a sampled voltage;

[0021] A voltage configuration circuit, electrically connected to the control circuit, configured to output the reference voltage in response to the load mode information;

[0022] a comparison circuit, electrically connected to the current sampling unit and the voltage configuration circuit respectively, and configured to output a first switch signal when the reference voltage is greater than or equal to the sampling voltage, and output a second switch signal when the reference voltage is less than the sampling voltage;

[0023] A sampling switch circuit is electrically connected to the current sampling unit and the comparison circuit respectively, and is configured to enter a first switch state in response to the first switch signal so that the current sampling unit and the sampling switch circuit form a sampling loop, and the current flowing through the sampling loop is a pull-load current. When the sampling voltage is equal to the reference voltage, the pull-load current is equal to the target current corresponding to the target rectification mode, or, enter a second switch state in response to the second switch signal to disconnect the sampling loop.

[0024] In a second aspect, an embodiment of the present application provides an electronic device, comprising the above-mentioned wireless charging receiving chip.

[0025] In a third aspect, an embodiment of the present application provides a test method for a wireless charging receiving chip, wherein the wireless charging receiving chip is the above-mentioned wireless charging receiving chip, and the test method includes:

[0026] Sending mode configuration information to the wireless charging transmitting chip, so that the wireless charging transmitting chip responds to the mode configuration information, modulates the reference mode identifier into the AC power supply, and obtains test mode information;

[0027] In response to the result that the reference mode identifier matches a preset target mode identifier, configuring the rectifier circuit to enter a target rectifier mode and the current pull circuit to enter a target pull mode, wherein the target pull mode corresponds to the target rectifier mode;

[0028] Acquire rectification output information obtained by the rectification circuit rectifying the target power supply in the target rectification mode, and power supply load information obtained by the current load circuit from the rectification circuit in the target load mode;

[0029] A rectification test result is generated according to the rectification output information and the power supply load information.

[0030] Optionally, the target mode identifier includes a diode rectification identifier, a half-bridge rectification identifier, and a full-bridge rectification identifier, and the response to the result that the reference mode identifier matches a preset target mode identifier, configuring the rectification circuit to enter the target rectification mode includes:

[0031] If the reference mode identifier is the diode rectification identifier, sending diode rectification information to the rectification circuit to make the rectification circuit enter a diode rectification mode;

[0032] If the reference mode identifier is the half-bridge rectification identifier, sending half-bridge rectification information to the rectification circuit to make the rectification circuit enter a half-bridge rectification mode;

[0033] If the reference mode identifier is the full-bridge rectification identifier, full-bridge rectification information is sent to the rectification circuit to enable the rectification circuit to enter a full-bridge rectification mode.

[0034] The embodiments of the present application can achieve the following technical effects: the embodiments of the present application do not need to build an additional demodulation test circuit, and can complete the test of the signal demodulation circuit through the mode configuration information and the test mode information during the rectification mode configuration process. This method can improve the test efficiency of the signal demodulation circuit and reduce the test cost. The embodiments of the present application do not need to build a rectification test circuit, and can reliably test whether the rectification circuit can work normally in the target rectification mode based on the rectification output information and the power supply load information, thereby ensuring that the rectification circuit can reliably adapt to a variety of rectification scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1 A schematic diagram of the system architecture of a test system provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the internal structure of a wireless charging receiving chip provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the circuit structure of a wireless charging receiving chip provided in another embodiment of the present application;

[0039] Figure 4A schematic diagram of a circuit structure of a rectifier circuit provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of the state of the rectifier circuit provided in an embodiment of the present application in a diode rectification mode;

[0041] Figure 6 A schematic diagram of the state of the rectifier circuit provided in an embodiment of the present application in a half-bridge rectifier mode;

[0042] Figure 7 A schematic diagram of the state of the rectifier circuit provided in an embodiment of the present application in a full-bridge rectifier mode;

[0043] Figure 8 A schematic diagram of the system architecture of a test system provided in another embodiment of the present application;

[0044] Fig. 9 A schematic diagram of the circuit structure of a wireless charging receiving chip provided in yet another embodiment of the present application;

[0045] Fig.10 A schematic diagram of the circuit structure of a wireless charging receiving chip provided in yet another embodiment of the present application;

[0046] Fig.11 A schematic diagram of the circuit structure of a wireless charging receiving chip provided in yet another embodiment of the present application;

[0047] Fig.12 A schematic diagram of the circuit structure of a current loading circuit provided in an embodiment of the present application;

[0048] Fig.13 A flowchart of a method for testing a wireless charging receiving chip provided in an embodiment of the present application;

[0049] Fig.14 A schematic diagram of the structure of a testing device for a wireless charging receiving chip provided in an embodiment of the present application;

[0050] Fig.15 A schematic diagram of the structure of a controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0052] It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional module division is performed in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a sequence different from the module division in the device or the flow chart. Furthermore, the words "first", "second", "third", etc. used in this application do not limit the data and execution order, but only distinguish the same items or similar items with basically the same functions and effects.

[0053] The present application embodiment is a test system. Figure 1 The test system includes a wireless charging transmitter chip 100, a test switch circuit 200 and a wireless charging test circuit 300. The wireless charging transmitter chip 100 is electrically connected to the wireless charging test circuit 300 based on the test switch circuit 200.

[0054] The wireless charging transmitter chip 100 is a SOC chip (System on Chip) of the wireless charging transmitter, and is configured to transmit an AC square wave, which is an AC power supply. The wireless charging transmitter chip 100 includes a transmitting voltage input pin VI N1, a power indication pin VCC, a switch node LX1 and a switch node LX2 of a full-bridge driver module, a first transmitting input pin GPIO1, a second transmitting input pin GPIO2, a ground pin GND, a first capacitor C1, and a first switch S1.

[0055] When the first switch S1 is closed, 5V voltage is input to the wireless charging transmitter chip 100 to provide power for the wireless charging transmitter chip 100. The wireless charging transmitter chip 100 responds to the input of 5V voltage and outputs an AC square wave. When the first switch S1 is opened, the wireless charging transmitter chip 100 stops outputting an AC square wave. The first capacitor C1 is a filter capacitor external to the wireless charging transmitter chip 100, usually 2.2uF.

[0056] The test switch circuit 200 is used to control the transmission of the AC square wave. The test switch circuit 200 includes a second switch S2, a third switch S3, a first resistor R1, a second resistor R2, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4. When the second switch S2 and the third switch S3 are both closed, the AC square wave sent by the wireless charging transmitter chip 100 is transmitted to the wireless charging test circuit 300 through the second switch S2, the third switch S3, the first resistor R1 and the second resistor R2. When the second switch S2 or the third switch S3 is disconnected, the AC square wave sent by the wireless charging transmitter chip 100 cannot be transmitted to the wireless charging test circuit 300. The first resistor R1 and the second resistor R2 are both used for current limiting and impedance matching.

[0057] The wireless charging test circuit 300 includes a wireless charging receiving chip 400 and a current loading circuit 500. The wireless charging receiving chip 400 is a SOC chip at the wireless charging receiving end, and is configured to receive the AC power sent by the wireless charging transmitting chip 100 and rectify the AC power into a DC power for output. The current loading circuit 500 is configured to load current from the rectifier circuit of the wireless charging receiving chip 400.

[0058] Please combine Figure 2 The wireless charging receiving chip 400 includes pin BST1, pin BST2, AC pin AC1, AC pin AC2, power indication pin VCC, first receiving output pin GPIO3, second receiving output pin GPIO4, ground pin GND, voltage output pin VRECT, and current pull pin VOUT. Pin BST1 and pin BST2 are both bootstrap boost input nodes of the rectifier circuit in the wireless charging receiving chip 400, AC pin AC1 and AC pin AC2 are two AC input nodes of the rectifier circuit, and the first receiving output pin GPIO3 and the second receiving output pin GPIO4 are mode configuration pins for configuring the working mode of the wireless charging transmitting chip 100. The voltage output pin VRECT is the pin for the output voltage of the rectifier circuit. The current pull pin VOUT is the voltage pin output by the output voltage of the rectifier circuit through the switch tube.

[0059] See also Figure 3 The wireless charging receiving chip 400 includes a rectifier circuit 41 , a control circuit 42 and a signal demodulation circuit 43 .

[0060] The rectifier circuit 41 is electrically connected to the current loading circuit 500, and the rectifier circuit 41 is used to rectify the AC power supply into a DC power supply, and the current loading circuit 500 pulls current from the rectifier circuit 41. The rectifier circuit 41 is a rectifier bridge composed of four MOS tubes, wherein the MOS tube can be an N-type MOS tube or a P-type MOS tube.

[0061] See also Figure 4 , the MOS tube is an N-type MOS tube, and each N-type MOS tube is controlled by the control circuit 42. Each MOS tube is equipped with a body diode. The rectifier circuit 41 can be configured to work in three rectification modes, namely, a diode rectification mode, a half-bridge rectification mode, and a full-bridge rectification mode.

[0062] In the diode rectification mode, all MOS tubes of the rectification circuit 41 enter the off state, and the body diodes of all MOS tubes rectify the AC power supply. Figure 5, the four MOS tubes enter the off state, and the body diodes of the four MOS tubes form a diode rectifier circuit. At this time, the rectifier circuit 41 is configured in the diode rectifier mode. Among them, the current output by the rectifier circuit 41 in the diode rectifier mode is small, which can adapt to low-power business scenarios.

[0063] The half-bridge rectification mode is that the rectification circuit 41 selects two MOS tubes to rectify the AC power supply. Figure 6 , two MOS tubes enter the off state, and the two MOS tubes form a half-bridge rectifier circuit. At this time, the rectifier circuit 41 is configured in the half-bridge rectifier mode. Among them, the current output by the rectifier circuit 41 in the half-bridge rectifier mode is moderate and can adapt to medium and low power business scenarios.

[0064] The full-bridge rectification mode is that the four MOS tubes of the rectification circuit 41 rectify the AC power supply. Figure 7 , 4 MOS tubes form a full-bridge rectifier circuit. At this time, the rectifier circuit 41 is configured in the full-bridge rectifier mode. Among them, the rectifier circuit 41 outputs a large current in the full-bridge rectifier mode, which can adapt to high-power business scenarios.

[0065] The control circuit 42 is electrically connected to the rectifier circuit 41 and the current load circuit 500, respectively, and is configured to send mode configuration information to the wireless charging transmitter chip 100, so that the wireless charging transmitter chip 100 modulates the reference mode identifier into the AC power supply to obtain test mode information. The mode configuration information is used to indicate that the rectifier circuit 41 needs to work in the target rectification mode, and the test mode information is used to indicate that the wireless charging transmitter chip 100 knows that the rectifier circuit 41 of the wireless charging receiver chip 400 needs to enter the target rectification mode.

[0066] See also Figure 8 , the control circuit 42 sends mode configuration information to the first transmitting input pin GPIO1 and the second transmitting input pin GPIO2 of the wireless charging transmitter chip 100 based on the first receiving output pin GPIO3 and the second receiving output pin GPIO4, wherein the mode configuration information can be 00 or 01 or 10 or 11, etc. Among them, "00" represents the diode rectification mode, "01" represents the half-bridge rectification mode, "10" represents the full-bridge rectification mode, and "11" represents other working modes, for example, "11" represents the signal modulation mode, and the signal modulation mode is that the wireless charging receiving chip 400 modulates the information to the AC power supply, and sends the AC power supply to the wireless charging transmitter chip 100, and the wireless charging transmitter chip 100 demodulates the information from the AC power supply. It can be understood that the mode configuration information can be expressed in many forms and is not limited to the above-mentioned methods.

[0067] The wireless charging transmitter chip 100 responds to the mode configuration information, determines the target rectification mode, modulates the reference mode identifier corresponding to the target rectification mode into the AC power supply, and obtains the test mode information. For example, the wireless charging receiving chip 400 notifies the wireless charging transmitter chip 100 that the rectification circuit 41 needs to enter the full-bridge rectification mode through the mode configuration information "10". After the wireless charging transmitter chip 100 parses the mode configuration information "10", it modulates the reference mode identifier "10" corresponding to the full-bridge rectification mode into the AC power supply, and obtains the test mode information including the reference mode identifier "10".

[0068] The signal demodulation circuit 43 is electrically connected to the control circuit 42, and is configured to demodulate the reference mode identifier from the test mode information. The control circuit 42 detects whether the reference mode identifier matches the preset target mode identifier. If the reference mode identifier matches the target mode identifier, it means that the signal demodulation circuit 43 can work normally and can demodulate the reference mode identifier from the test mode information normally. In response to the result that the reference mode identifier matches the preset target mode identifier, the control circuit 42 configures the rectifier circuit 41 to enter the target rectifier mode and the current load circuit to enter the target load mode, and the target load mode corresponds to the target rectifier mode. The target load mode is a mode in which the current load circuit 500 loads a target current from the rectifier circuit 41, and the target current is the current that the rectifier circuit 41 can output under the target rectifier mode.

[0069] As mentioned above, the target rectification mode is any one of the diode rectification mode, the half-bridge rectification mode and the full-bridge rectification mode. Correspondingly, the target loading mode is any one of the diode loading mode, the half-bridge loading mode and the full-bridge loading mode.

[0070] Under normal circumstances, the rectifier circuit 41 can output a target current of less than 100mA in the diode rectifier mode, a target current of 100mA to 350mA in the half-bridge rectifier mode, and a target current of more than 350mA in the full-bridge rectifier mode. The current-pulling circuit 500 can pull a target current of less than 100mA from the rectifier circuit 41 in the diode-pulling mode, wherein the specific value of the target current that the current-pulling circuit 500 can pull can be configured by the control circuit 42, for example, the control circuit 42 can configure the current-pulling circuit 500 to pull a current of 50mA in the diode-pulling mode, can configure the current-pulling circuit 500 to pull a current of 250mA in the half-bridge-pulling mode, and can configure the current-pulling circuit 500 to pull a current of 500mA in the full-bridge-pulling mode.

[0071] If the reference mode identifier does not match the target mode identifier, it means that the signal demodulation circuit 43 is working abnormally or the wireless charging transmitter chip 100 is working abnormally. However, the wireless charging transmitter chip 100 is used to test the wireless charging receiving chip after being tested to work normally. Therefore, it is usually assumed that the wireless charging transmitter chip 100 works normally. Therefore, if the reference mode identifier does not match the target mode identifier, it means that the signal demodulation circuit 43 is working abnormally. In some embodiments, if the reference mode identifier does not match the target mode identifier, the control circuit 42 generates demodulation test failure information to indicate that the signal demodulation circuit 43 test failed.

[0072] The embodiment of the present application does not require the construction of an additional demodulation test circuit. The signal demodulation circuit 43 can be tested by using the mode configuration information and the test mode information during the rectification mode configuration process. This method can improve the test efficiency of the signal demodulation circuit 43 and reduce the test cost.

[0073] After the signal demodulation circuit 43 is successfully tested in the embodiment of the present application, there are at least two ways for the wireless charging transmitting chip 100 to transmit AC power to the wireless charging receiving chip 400, as follows:

[0074] In some embodiments, if the reference mode identifier matches the target mode identifier, the control circuit 42 sends a mode setting completion message to the wireless charging transmitter chip 100 , and the wireless charging transmitter chip 100 responds to the mode setting completion message and transmits AC power to the wireless charging receiver chip 400 .

[0075] In some embodiments, when the wireless charging transmitting chip 100 detects that a preset time has arrived, the wireless charging transmitting chip 100 transmits AC power to the wireless charging receiving chip 400 .

[0076] The rectifier circuit 41 rectifies the AC power output by the wireless charging transmitter chip 100 according to the target rectification mode to obtain rectified output information. The rectified output information includes the output voltage. Figure 2 , the output voltage is voltage VRECT.

[0077] The current loading circuit 500 loads power from the rectifier circuit 41 in the target loading mode to obtain power loading information, and the power loading information includes the loading current. It can be understood that when the rectifier circuit 41 can work normally in the target rectification mode, the rectifier circuit 41 can output the target current corresponding to the target rectification mode, and the current loading circuit 500 can load the loading current from the rectifier circuit 41, and the loading current is equal to the target current. For example, the target rectification mode is the full-bridge rectification mode, the rectifier circuit 41 can output a target current of 500mA, and the current-pulling circuit 500 can pull a pull current of 500mA from the rectifier circuit 41. However, when the rectifier circuit 41 cannot work normally in the target rectification mode, for example, the user needs to configure the rectifier circuit 41 to enter the full-bridge rectification mode, but the logic of the control circuit 42 is confused, and the rectifier circuit 41 cannot be configured to enter the full-bridge rectification mode, but the rectifier circuit 41 is configured to enter the diode rectification mode, or individual MOS tubes in the rectifier circuit 41 are damaged or malfunction, resulting in the rectifier circuit 41 being unable to enter the full-bridge rectification mode. At this time, the pull current pulled by the current-pulling circuit 500 from the rectifier circuit 41 is 50mA, and at this time, the pull current is not equal to the target current.

[0078] The control circuit 42 generates a rectification test result according to the rectification output information and the power supply load information. The rectification test result is the test result of the rectification circuit 41, wherein the rectification test result includes a rectification failure result and a rectification success result, wherein the rectification failure result is used to indicate that the rectification circuit 41 is working abnormally, and the rectification success result is used to indicate that the rectification circuit 41 is working normally. The embodiment of the present application does not need to build a rectification test circuit, and can reliably test whether the rectification circuit 41 can work normally in the target rectification mode based on the rectification output information and the power supply load information, thereby ensuring that the rectification circuit 41 can reliably adapt to a variety of rectification scenarios. In addition, it is worth noting that the embodiment of the present application can implement the test of the signal demodulation circuit 43 during the configuration process of the rectification mode, and finally complete the test of the rectification circuit 41, which can greatly improve the test efficiency.

[0079] In some embodiments, the rectifier output information includes an output voltage, the power supply load information includes a load current, and the control circuit 42 is configured to: determine a first comparison result based on the output voltage and a preset target voltage, determine a second comparison result based on the load current and a preset target current, and generate a rectifier test result based on the first comparison result and the second comparison result. The embodiment of the present application can not only test whether the rectifier circuit 41 can work normally with the output voltage as a factor, but also test whether the rectifier circuit 41 can work normally in the target rectifier mode with the load current as a factor, so as to verify the reliability of the rectifier circuit 41 in adapting to various rectifier scenarios.

[0080] If the first comparison result is used to indicate that the output voltage is equal to the target voltage, and the pull-load current is equal to the target current, it means that the rectifier circuit 41 can not only output the voltage normally, but also output the current that conforms to the target rectification mode, and therefore, the embodiment of the present application generates a rectification success result. If the first comparison result is used to indicate that the output voltage is not equal to the target voltage, and / or the pull-load current is not equal to the target current, it means that the rectifier circuit 41 cannot output the voltage normally, or, although it can output the voltage normally, it cannot output the current that conforms to the target rectification mode, and therefore, the embodiment of the present application generates a rectification failure result.

[0081] In some embodiments, the control circuit 42 is configured to send rectification mode information to the rectification circuit 41 in response to the result that the reference mode identifier matches the preset target mode identifier, so that the rectification circuit 41 enters the target rectification mode in response to the rectification mode information.

[0082] The target mode identification includes a diode rectification identification, a half-bridge rectification identification and a full-bridge rectification identification, and the rectification mode information includes diode rectification information, half-bridge rectification information and full-bridge rectification information.

[0083] If the reference mode identifier is a diode rectification identifier, the control circuit 42 sends diode rectification information to the rectification circuit 41 to make the rectification circuit 41 enter the diode rectification mode. Figure 4 , the control circuit 42 sends the diode rectification information "0000" to the rectifier circuit 41, wherein each "0" in "0000" represents sending a low-level signal to the gate of the corresponding MOS tube, the four MOS tubes of the rectifier circuit 41 work in the off state, the body diodes of the four MOS tubes form a diode rectification circuit in a diode mode, and the rectifier circuit 41 enters the diode rectification mode.

[0084] If the reference mode identifier is a half-bridge rectification identifier, the control circuit 42 sends half-bridge rectification information to the rectification circuit 41, so that the rectification circuit 41 enters the half-bridge rectification mode. Figure 4 , the control circuit 42 sends half-bridge rectification information "1010" to the rectification circuit 41 in each rectification cycle, wherein the first "1" in "1010" represents sending a high-level signal to the gate of the MOS tube N1, the first "0" in "1010" represents sending a low-level signal to the gate of the MOS tube N2, the second "1" in "1010" represents sending a high-level signal to the gate of the MOS tube N3, and the second "0" in "1010" represents sending a low-level signal to the gate of the MOS tube N4, and the rectification circuit 41 enters the half-bridge rectification mode.

[0085] It is understandable that the control circuit 42 may also send half-bridge rectification information “0101” to the rectification circuit 41 , so that the rectification circuit 41 enters the half-bridge rectification mode.

[0086] If the reference mode identifier is a full-bridge rectification identifier, the control circuit 42 sends full-bridge rectification information to the rectification circuit 41 to make the rectification circuit 41 enter the full-bridge rectification mode. The full-bridge rectification information includes the first half-wave rectification information and the second half-wave rectification information. Figure 4 , the control circuit 42 sends the first half-wave rectification information "1010" to the rectification circuit 41 in one 1 / 2 rectification cycle, and sends the second half-wave rectification information "0101" in another 1 / 2 rectification cycle, and the rectification circuit 41 enters the full-bridge rectification mode.

[0087] The embodiment of the present application can generate corresponding rectification mode information according to the target rectification mode, so that the rectification circuit 41 can adapt to various rectification scenarios and enter the target rectification mode to provide the corresponding output voltage and target current.

[0088] See also Fig. 9 The wireless charging receiving chip 400 further includes a signal modulation circuit 44, which is electrically connected to the control circuit 42 and is also electrically connected to the wireless charging transmitting chip 100. The signal modulation circuit 44 can modulate the specified data into the AC power supply, so that the wireless charging transmitting chip 100 demodulates the specified data from the AC power supply and compares the specified data with the preset data. If the specified data is consistent with the preset data, the wireless charging transmitting chip 100 sends a modulation test success result to the control circuit 42. If the specified data is inconsistent with the preset data, the wireless charging transmitting chip 100 sends a modulation test failure result to the control circuit 42.

[0089] It is understandable that, in some embodiments, the test timing of the signal modulation circuit 44 can be set after the test of the rectifier circuit 41 is completed. For example, the control circuit 42 does not need to determine whether the reference mode identifier matches the diode rectification identifier. When the control circuit 42 completes the test of the rectifier circuit 41 in the diode rectification mode, the control circuit 42 can start the test operation of the signal modulation circuit 44. In some embodiments, the test timing of the signal modulation circuit 44 can also be set before the test of the rectifier circuit 41.

[0090] In some embodiments, the control circuit 42 can determine whether the reference mode identifier matches the diode rectification identifier, and then decide whether to start the test operation of the signal modulation circuit 44. For example, if the reference mode identifier is a signal modulation test identifier, the control circuit 42 starts the test operation of the signal modulation circuit 44 and notifies the signal modulation circuit 44 to modulate the specified data into the AC power supply.

[0091] In some embodiments, the control circuit 42 is configured to generate load mode information according to the target rectification mode, and send the load mode information to the current loading circuit 500 so that the current loading circuit 500 loads power from the rectification circuit 41 under the target loading mode to obtain power loading information.

[0092] The current output capacity of the rectifier circuit 41 in different rectification modes is different. The embodiment of the present application can generate load mode information in a targeted manner according to the target rectification mode, thereby enabling the current load circuit 500 to specifically load power from the rectifier circuit 41, thereby meeting the power load requirements under different rectification modes.

[0093] The control circuit 42 obtains a reference voltage corresponding to the target rectification mode, and sends the reference voltage as the loading mode information to the current loading circuit 500 . The current loading circuit 500 responds to the input of the reference voltage in the target loading mode and loads the power from the rectification circuit 41 .

[0094] The rectifier output information includes the rectifier output current, and the load mode information includes a reference voltage corresponding to the target rectifier mode. The embodiment of the present application requires that the current load circuit 500 loads a rectifier output current of 50mA from the rectifier circuit 41 in the diode rectifier mode, and the reference voltage is set to 0.25V. Similarly, the embodiment of the present application requires that the current load circuit 500 loads a rectifier output current of 250mA from the rectifier circuit 41 in the half-bridge rectifier mode, and the reference voltage is set to 1.25V. The embodiment of the present application requires that the current load circuit 500 loads a rectifier output current of 500mA from the rectifier circuit 41 in the full-bridge rectifier mode, and the reference voltage is set to 2.5V.

[0095] See also Fig.10 The current loading circuit 500 includes a current sampling unit 51 , a voltage configuration circuit 52 , a comparison circuit 53 and a sampling switch circuit 54 .

[0096] The current sampling unit 51 is electrically connected to the rectifier circuit 41 and is configured to sample the rectified output current and output a sampled voltage.

[0097] The voltage configuration circuit 52 is electrically connected to the control circuit 52 and is configured to output a reference voltage corresponding to a target rectification mode in response to the load mode information.

[0098] The comparison circuit 53 is electrically connected to the current sampling unit 51 and the voltage configuration circuit 52, respectively, and is configured such that when the reference voltage is greater than or equal to the sampling voltage, the comparison circuit 53 outputs a first switch signal, and when the reference voltage is less than the sampling voltage, the comparison circuit 53 outputs a second switch signal. For example, the first switch signal is high level and the second switch signal is low level, or the first switch signal is low level and the second switch signal is high level.

[0099] The sampling switch circuit 54 is electrically connected to the current sampling unit 51 and the comparison circuit 53, respectively, and is configured to enter the first switch state in response to the first switch signal, so that the current sampling unit 51 and the sampling switch circuit 54 form a sampling loop, and the current flowing through the sampling loop is the pull-load current. When the sampling voltage is equal to the reference voltage, the pull-load current is equal to the target current corresponding to the target rectification mode, or, in response to the second switch signal, enter the second switch state to disconnect the sampling loop. For example, the first switch state is the on state, and the second switch state is the off state, or the first switch state is the off state, and the second switch state is the on state.

[0100] For example, the rectifier circuit 41 is in the diode rectification mode, and the voltage configuration circuit 52 outputs a reference voltage of 0.25V according to the load mode information. In the initial stage, the rectifier output current output by the rectifier circuit 41 is small, the sampling voltage is less than the reference voltage, the comparison circuit 53 outputs a high-level first switch signal, and the sampling switch circuit 54 responds to the high level and enters the on state. At this time, the current sampling unit 51 and the sampling switch circuit 54 form a sampling loop, and the load current pulled from the rectifier circuit 41 can flow through the sampling loop. When the rectifier output current increases until the sampling voltage is equal to the reference voltage, at this time, the rectifier output current is 50mA, that is, the rectifier output current is equal to the target current in the diode rectification mode, the sampling switch circuit 54 is still in the on state, and the load current can still flow through the sampling loop.

[0101] When the rectified output current is greater than 50mA, the sampling voltage is greater than the reference voltage, the comparison circuit 53 outputs a low-level second switch signal, the sampling switch circuit 54 responds to the low level and enters the cut-off state, and the sampling loop between the current sampling unit 51 and the sampling switch circuit 54 is disconnected. When the sampling loop between the current sampling unit 51 and the sampling switch circuit 54 is disconnected, the rectified output current decreases, the sampling voltage decreases and is less than the reference voltage, the comparison circuit 53 outputs a high-level first switch signal, and re-enters the above process, and the cycle is repeated, thereby enabling the current loading circuit 500 to stably load a target current of 50mA.

[0102] The embodiment of the present application can configure the voltage configuration circuit 52 to output a reference voltage according to the target rectification mode, thereby ensuring that the current loading circuit 500 can load a loading current that matches the target current for rectification testing.

[0103] See also Fig.11The current sampling unit 51 includes a current sampling circuit 511 and a voltage amplifier 512. The current sampling circuit 511 is electrically connected to the rectifier circuit 41. The voltage amplifier 512 is electrically connected to the current sampling circuit 511 and the voltage configuration circuit 52. The current sampling circuit 511 is used to sample the target current and output a sampled voltage. The voltage amplifier 512 is used to amplify the sampled voltage to obtain an amplified sampled voltage.

[0104] See also Fig.12 The current sampling circuit 511 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a fourth capacitor C4. The third resistor R3, the fourth resistor R4 and the fifth resistor R5 all play a role in current sampling. The fourth capacitor C4 is used to filter the noise signal applied to the voltage amplifier 512.

[0105] The voltage configuration circuit 52 is a digital-to-analog converter, and the control circuit 42 can configure the digital-to-analog converter to output a reference voltage corresponding to a target rectification mode.

[0106] The comparison circuit 53 is an operational amplifier, which can compare the amplified sampling voltage with the reference voltage. When the sampling voltage is greater than the reference voltage, the operational amplifier outputs a low level, and when the sampling voltage is less than the reference voltage, the operational amplifier outputs a high level.

[0107] The sampling switch circuit 54 includes a sixth resistor R6, a seventh resistor R7 and an N-type MOS transistor Q1. The sixth resistor R6 and the seventh resistor R7 play the role of current limiting, voltage dividing and impedance matching. When the gate of the N-type MOS transistor Q1 receives a low level, the N-type MOS transistor Q1 enters a cut-off state. When the gate of the N-type MOS transistor Q1 receives a high level, the N-type MOS transistor Q1 enters a conduction state.

[0108] It is understandable that the structures of the current sampling unit 51, the voltage configuration circuit 52, the comparison circuit 53 and the sampling switch circuit 54 are not limited to Fig.12 The methods given above can be further modified by those skilled in the art under the guidance of the embodiments of the present application.

[0109] In order to elaborate on the working principle of the test system provided in the embodiment of the present application, the embodiment of the present application elaborates on the test process in detail, which is as follows:

[0110] A1: The wireless charging transmitter chip monitors whether there is a 5V power input. If yes, it executes step A2. If not, it returns to step A1.

[0111] A2: The wireless charging transmitter chip outputs AC power.

[0112] A3: Determine whether the second switch S2 and the third switch S3 are both closed. If they are both closed, execute step A4; if they are not both closed, return to step A3.

[0113] A4: If all are closed, the control circuit initializes the rectifier circuit, the signal demodulation circuit, the signal modulation circuit and the GPIO module. The first receiving output pin GPIO3 and the second receiving output pin GPIO4 output mode configuration information "00".

[0114] A5: The wireless charging transmitting chip determines whether the mode configuration information "00" is recognized based on the first transmitting input pin GPIO1 and the second transmitting input pin GPIO2. If so, execute step A6; if not, execute step A9.

[0115] A6: The wireless charging transmitter chip modulates the reference mode identifier "0xaa" into the AC power supply to obtain the test mode information, and sends the test mode information to the signal demodulation circuit.

[0116] A7: The signal demodulation circuit demodulates the reference mode identifier "0xaa". If the control circuit detects that the reference mode identifier matches the diode rectification mode identifier, the control circuit generates a modulation test success result, and configures the rectification circuit to enter the diode rectification mode and the current pull circuit to enter the diode pull mode. If the control circuit detects that the reference mode identifier does not match the diode rectification mode identifier, the control circuit generates a modulation test failure result.

[0117] A8: The control circuit checks whether the output voltage is equal to the target voltage and whether the load current is equal to the target current. If both are true, a rectification success result is generated. If not, a rectification failure result is generated.

[0118] A9: The wireless charging transmitting chip determines whether the mode configuration information "01" is recognized based on the first transmitting input pin GPIO1 and the second transmitting input pin GPIO2. If so, execute step A10; if not, execute step A13.

[0119] A10: The wireless charging transmitter chip modulates the reference mode identifier "0x55" into the AC power supply to obtain the test mode information, and sends the test mode information to the signal demodulation circuit.

[0120] A11: The signal demodulation circuit demodulates the reference mode identifier "0x55". If the control circuit detects that the reference mode identifier matches the half-bridge rectification mode identifier, the control circuit generates a modulation test success result, and configures the rectification circuit to enter the half-bridge rectification mode and the current pull circuit to enter the half-bridge pull mode. If the control circuit detects that the reference mode identifier does not match the half-bridge rectification mode identifier, the control circuit generates a modulation test failure result.

[0121] A12: The control circuit checks whether the output voltage is equal to the target voltage and whether the load current is equal to the target current. If both are true, a rectification success result is generated. If not, a rectification failure result is generated.

[0122] A13: The wireless charging transmitting chip determines whether the mode configuration information "10" is recognized based on the first transmitting input pin GPIO1 and the second transmitting input pin GPIO2. If so, execute step A14; if not, execute step A17.

[0123] A14: The wireless charging transmitter chip modulates the reference mode identifier "0xa5" into the AC power supply to obtain the test mode information, and sends the test mode information to the signal demodulation circuit.

[0124] A15: The signal demodulation circuit demodulates the reference mode identifier "0xa5". If the control circuit detects that the reference mode identifier matches the full-bridge rectifier mode identifier, the control circuit generates a modulation test success result, and configures the rectifier circuit to enter the full-bridge rectifier mode and the current pull circuit to enter the full-bridge pull mode. If the control circuit detects that the reference mode identifier does not match the full-bridge rectifier mode identifier, the control circuit generates a modulation test failure result.

[0125] A16: The control circuit checks whether the output voltage is equal to the target voltage and whether the load current is equal to the target current. If both are true, a rectification success result is generated. If not, a rectification failure result is generated.

[0126] A17: The wireless charging transmitting chip determines whether the mode configuration information "11" is recognized based on the first transmitting input pin GPIO1 and the second transmitting input pin GPIO2. If so, execute step A18; if not, execute step A22.

[0127] A18: The wireless charging transmitter chip modulates the reference mode identifier "0x5a" into the AC power supply to obtain the test mode information, and sends the test mode information to the signal demodulation circuit.

[0128] A19: The signal demodulation circuit demodulates the reference mode identifier "0x5a". If the control circuit detects that the reference mode identifier matches the full-bridge rectifier mode identifier, the control circuit generates a modulation test success result, and configures the rectifier circuit to enter the full-bridge rectifier mode, the current load circuit to enter the full-bridge load mode, and the signal modulation circuit to enter the signal modulation test mode. If the control circuit detects that the reference mode identifier does not match the full-bridge rectifier mode identifier, the control circuit generates a modulation test failure result.

[0129] A20: The control circuit checks whether the output voltage is equal to the target voltage and whether the load current is equal to the target current. If both are true, a rectification success result is generated. If not, a rectification failure result is generated.

[0130] A21: In the signal modulation test mode, the signal modulation circuit modulates the specified data "0xff" into the AC power supply. The wireless charging transmitter chip demodulates the specified data from the AC power supply and compares the specified data with the preset data. If the specified data is consistent with the preset data, the wireless charging transmitter chip sends a modulation test success result to the control circuit. If the specified data is inconsistent with the preset data, the wireless charging transmitter chip sends a modulation test failure result to the control circuit.

[0131] A22: End of testing.

[0132] The embodiments of the present application can test the rectifier circuit, the signal demodulation circuit and the signal modulation circuit, without having to construct different types of test circuits to test the above circuits respectively, and can also configure the rectifier circuit to be tested under different rectification modes. The embodiments of the present application use fewer components, low cost, high integration, high implementation, strong portability, strong reliability, and comprehensive testing.

[0133] The wireless charging receiving chip provided in the embodiment of the present application can be applied to an electronic device, and the electronic device includes a receiving coil, and the receiving coil is electrically connected to the wireless charging receiving chip, and is used to couple the energy radiated by the wireless charging transmitting chip based on the transmitting coil. Among them, those skilled in the art can install the receiving coil at the corresponding position of the electronic device according to the type of electronic device. The electronic device can be a drone, a robot, an electric vehicle, a mobile phone, a watch, a mouse, etc.

[0134] As another aspect of the present application, the present application provides a method for testing a wireless charging receiving chip. The wireless charging test circuit includes a wireless charging receiving chip, see Fig.13 , the test method includes the following steps:

[0135] S131: sending mode configuration information to the wireless charging transmitting chip, so that the wireless charging transmitting chip responds to the mode configuration information, modulates the reference mode identifier into the AC power supply, and obtains test mode information.

[0136] S132: In response to the result that the reference mode identifier matches the preset target mode identifier, the rectifier circuit is configured to enter a target rectifier mode and the current load circuit is configured to enter a target load mode, wherein the target load mode corresponds to the target rectifier mode.

[0137] S133: Obtaining rectification output information obtained by the rectification circuit on the target power supply in the target rectification mode, and power supply load information obtained by the current load circuit from the rectification circuit in the target load mode.

[0138] S134: Generate a rectification test result according to the rectification output information and the power supply load information.

[0139] The embodiment of the present application does not need to build an additional demodulation test circuit, and can complete the test of the signal demodulation circuit through the mode configuration information and the test mode information during the rectification mode configuration process. This method can improve the test efficiency of the signal demodulation circuit and reduce the test cost. The embodiment of the present application does not need to build a rectification test circuit, and can reliably test whether the rectification circuit can work normally in the target rectification mode based on the rectification output information and the power supply load information, thereby ensuring that the rectification circuit can reliably adapt to a variety of rectification scenarios.

[0140] The target mode identifier includes a diode rectification identifier, a half-bridge rectification identifier and a full-bridge rectification identifier. In response to the result that the reference mode identifier matches the preset target mode identifier, configuring the rectifier circuit to enter the target rectification mode includes the following steps: if the reference mode identifier is a diode rectification identifier, diode rectification information is sent to the rectifier circuit to make the rectifier circuit enter the diode rectification mode; if the reference mode identifier is a half-bridge rectification identifier, half-bridge rectification information is sent to the rectifier circuit to make the rectifier circuit enter the half-bridge rectification mode; if the reference mode identifier is a full-bridge rectification identifier, full-bridge rectification information is sent to the rectifier circuit to make the rectifier circuit enter the full-bridge rectification mode.

[0141] The rectifier output information includes the output voltage, and the power supply load information includes the load current. Generating the rectifier test result according to the rectifier output information and the power supply load information includes the following steps: determining a first comparison result according to the output voltage and a preset target voltage, determining a second comparison result according to the load current and a preset target current, and generating the rectifier test result according to the first comparison result and the second comparison result.

[0142] Generating a rectification test result based on the first comparison result and the second comparison result includes the following steps: if the first comparison result is used to indicate that the output voltage is equal to the target voltage, and the load current is equal to the target current, a rectification success result is generated; if the first comparison result is used to indicate that the output voltage is not equal to the target voltage, and / or the load current is not equal to the target current, a rectification failure result is generated.

[0143] In response to the result that the reference mode identifier matches the preset target mode identifier, configuring the current-loading circuit to enter the target loading mode includes the following steps: generating loading mode information according to the target rectification mode, and sending the loading mode information to the current-loading circuit so that the current-loading circuit loads the power supply from the rectification circuit under the target loading mode to obtain the power supply loading information.

[0144] It should be noted that, in each of the above-mentioned embodiments, there is not necessarily a certain order between the above-mentioned steps. A person skilled in the art can understand, based on the description of the embodiments of the present application, that in different embodiments, the above-mentioned steps may have different execution orders, that is, they may be executed in parallel, may be executed interchangeably, and so on.

[0145] As another aspect of the embodiment of the present application, the embodiment of the present application provides a test device for a wireless charging receiving chip. The test device for the wireless charging receiving chip can be a software module, which includes several instructions stored in a memory, and the processor can access the memory and call the instructions for execution to complete the test method of the wireless charging receiving chip described in the above embodiments.

[0146] In some embodiments, the test device of the wireless charging receiving chip can also be constructed by hardware devices. For example, the test device of the wireless charging receiving chip can be constructed by one or more chips, and each chip can work in coordination with each other to complete the test method of the wireless charging receiving chip described in each of the above embodiments. For another example, the test device of the wireless charging receiving chip can also be constructed by various logic devices, such as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), a single-chip microcomputer, an ARM (Acorn RISC Machine) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination of these components.

[0147] See also Fig.14 The wireless charging receiving chip testing device 140 includes an information sending module 141 , a mode configuration module 142 , a rectifying and loading module 143 and a rectifying and testing module 144 .

[0148] The information sending module 141 is used to send mode configuration information to the wireless charging transmitting chip, so that the wireless charging transmitting chip responds to the mode configuration information, modulates the reference mode identifier into the AC power supply, and obtains the test mode information. The mode configuration module 142 is used to respond to the result that the reference mode identifier matches the preset target mode identifier, configure the rectifier circuit to enter the target rectifier mode and the current load circuit to enter the target load mode, and the target load mode corresponds to the target rectifier mode. The rectifier load module 143 is used to obtain the rectifier output information obtained by the rectifier circuit rectifying the target power supply in the target rectifier mode, and the power supply load information obtained by the current load circuit from the rectifier circuit in the target load mode. The rectifier test module 144 is used to generate a rectifier test result based on the rectifier output information and the power supply load information.

[0149] The embodiment of the present application does not need to build an additional demodulation test circuit, and can complete the test of the signal demodulation circuit through the mode configuration information and the test mode information during the rectification mode configuration process. This method can improve the test efficiency of the signal demodulation circuit and reduce the test cost. The embodiment of the present application does not need to build a rectification test circuit, and can reliably test whether the rectification circuit can work normally in the target rectification mode based on the rectification output information and the power supply load information, thereby ensuring that the rectification circuit can reliably adapt to a variety of rectification scenarios.

[0150] The target mode identifier includes a diode rectification identifier, a half-bridge rectification identifier and a full-bridge rectification identifier. The mode configuration module 142 is specifically used for: if the reference mode identifier is a diode rectification identifier, then diode rectification information is sent to the rectifier circuit to make the rectifier circuit enter the diode rectification mode; if the reference mode identifier is a half-bridge rectification identifier, then half-bridge rectification information is sent to the rectifier circuit to make the rectifier circuit enter the half-bridge rectification mode; if the reference mode identifier is a full-bridge rectification identifier, then full-bridge rectification information is sent to the rectifier circuit to make the rectifier circuit enter the full-bridge rectification mode.

[0151] The rectifier output information includes the output voltage, the power supply load information includes the load current, and the mode configuration module 142 is also specifically used to: determine a first comparison result based on the output voltage and the preset target voltage, determine a second comparison result based on the load current and the preset target current, and generate a rectifier test result based on the first comparison result and the second comparison result.

[0152] The mode configuration module 142 is also specifically used to: if the first comparison result is used to indicate that the output voltage is equal to the target voltage, and the pull-load current is equal to the target current, then a rectification success result is generated; if the first comparison result is used to indicate that the output voltage is not equal to the target voltage, and / or the pull-load current is not equal to the target current, then a rectification failure result is generated.

[0153] The mode configuration module 142 is also specifically used to generate load mode information according to the target rectification mode, and send the load mode information to the current loading circuit so that the current loading circuit loads power from the rectification circuit in the target loading mode to obtain power loading information.

[0154] It should be noted that the above-mentioned testing device for the wireless charging receiving chip can execute the testing method for the wireless charging receiving chip provided in the embodiment of the present application, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not fully described in the embodiment of the testing device for the wireless charging receiving chip, please refer to the testing method for the wireless charging receiving chip provided in the embodiment of the present application.

[0155] See also Fig.15 , Fig.15A schematic diagram of the structure of a controller provided in an embodiment of the present application. The controller 150 includes one or more processors 151 and a memory 152. The memory 152 is connected to the one or more processors 151, for example, connected to the processor 151 via a bus.

[0156] The processor 151 is configured to support the controller to perform the corresponding functions in the method in the above method embodiment. The processor can be a central processing unit (CPU), a network processor (NP), a hardware chip or any combination thereof. The above hardware chip can be an application specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above PLD can be a complex programmable logic device (CPLD), a field programmable gate array (FPGA), a general array logic (GAL) or any combination thereof.

[0157] The memory 152 is used to store program codes, etc. The memory may include a volatile memory (VM), such as a random access memory (RAM); the memory may also include a non-volatile memory (NVM), such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory may also include a combination of the above-mentioned types of memory.

[0158] The memory 152 can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules corresponding to the test method of the wireless charging receiving chip in the embodiment of the present application. The processor executes the various functional applications and data processing of the test method of the wireless charging receiving chip and the test device of the wireless charging receiving chip by running the non-volatile software programs, instructions and modules stored in the memory, that is, realizes the functions of each module or unit of the test method of the wireless charging receiving chip and the test device of the wireless charging receiving chip provided in the above method embodiment.

[0159] The memory 152 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function. The data storage area may store data created based on the use of the test device for the wireless charging receiving chip, etc. In some embodiments, the memory may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the test device for the wireless charging receiving chip via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0160] The one or more modules are stored in the memory, and when executed by the one or more processors, the test method of the wireless charging receiving chip in any of the above method embodiments is executed, for example, the method steps described in the above method embodiments are executed to realize the functions of the modules described in the above device embodiments.

[0161] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a controller, the computer executes the method described in the above embodiment.

[0162] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0163] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A wireless charging test circuit, characterized in that: It includes a wireless charging receiving chip and a current loading circuit, and the wireless charging receiving chip includes: A rectifier circuit, electrically connected to the current loading circuit; a control circuit, electrically connected to the rectifier circuit and the current loading circuit respectively, and configured to send mode configuration information to the wireless charging transmitter chip, so that the wireless charging transmitter chip modulates the reference mode identifier into the AC power supply to obtain test mode information; The signal demodulation circuit is electrically connected to the control circuit and is configured to demodulate a reference mode identifier from the test mode information. The control circuit configures the rectifier circuit to enter a target rectifier mode and the current load circuit to enter a target load mode in response to the result that the reference mode identifier matches a preset target mode identifier. The target load mode corresponds to the target rectifier mode. The rectifier circuit rectifies the AC power output by the wireless charging transmitter chip according to the target rectifier mode to obtain rectifier output information. The current load circuit loads power from the rectifier circuit in the target load mode to obtain power load information. The control circuit generates a rectifier test result according to the rectifier output information and the power load information.

2. The wireless charging test circuit according to claim 1, characterized in that: The control circuit is configured to send rectification mode information to the rectification circuit in response to a result that the reference mode identifier matches a preset target mode identifier, so that the rectification circuit enters the target rectification mode in response to the rectification mode information.

3. The wireless charging test circuit according to claim 2, characterized in that: The target mode identifier includes a diode rectification identifier, a half-bridge rectification identifier and a full-bridge rectification identifier, and the rectification mode information includes diode rectification information, half-bridge rectification information and full-bridge rectification information; If the reference mode identifier is the diode rectification identifier, the control circuit sends diode rectification information to the rectification circuit to make the rectification circuit enter the diode rectification mode; If the reference mode identifier is the half-bridge rectification identifier, the control circuit sends half-bridge rectification information to the rectification circuit to make the rectification circuit enter a half-bridge rectification mode; If the reference mode identifier is the full-bridge rectification identifier, the control circuit sends full-bridge rectification information to the rectification circuit to make the rectification circuit enter a full-bridge rectification mode.

4. The wireless charging test circuit according to claim 1, characterized in that: The rectification output information includes an output voltage, the power supply load information includes a load current, and the control circuit is configured to: determine a first comparison result based on the output voltage and a preset target voltage, determine a second comparison result based on the load current and a preset target current, and generate a rectification test result based on the first comparison result and the second comparison result.

5. The wireless charging test circuit according to claim 4, characterized in that: The rectification test results include rectification failure results and rectification success results; If the first comparison result is used to indicate that the output voltage is equal to the target voltage, and the load current is equal to the target current, a rectification success result is generated; If the first comparison result is used to indicate that the output voltage is not equal to the target voltage, and / or the load current is not equal to the target current, a rectification failure result is generated.

6. The wireless charging test circuit according to any one of claims 1 to 5, characterized in that: The control circuit is configured to generate load mode information according to the target rectification mode, and send the load mode information to the current loading circuit, so that the current loading circuit loads power from the rectification circuit under the target loading mode to obtain power loading information.

7. The wireless charging test circuit according to claim 6, characterized in that: The rectifier output information includes a rectifier output current, the load mode information includes a reference voltage corresponding to the target rectifier mode, the power supply load information includes a load current, and the current load circuit includes: a current sampling unit, electrically connected to the rectifier circuit, and configured to sample the rectifier output current and output a sampled voltage; A voltage configuration circuit, electrically connected to the control circuit, configured to output the reference voltage in response to the load mode information; a comparison circuit, electrically connected to the current sampling unit and the voltage configuration circuit respectively, and configured to output a first switch signal when the reference voltage is greater than or equal to the sampling voltage, and output a second switch signal when the reference voltage is less than the sampling voltage; A sampling switch circuit is electrically connected to the current sampling unit and the comparison circuit respectively, and is configured to enter a first switch state in response to the first switch signal so that the current sampling unit and the sampling switch circuit form a sampling loop, and the current flowing through the sampling loop is a pull-load current. When the sampling voltage is equal to the reference voltage, the pull-load current is equal to the target current corresponding to the target rectification mode, or, enter a second switch state in response to the second switch signal to disconnect the sampling loop.

8. An electronic device, characterized in that: It comprises the wireless charging receiving chip as claimed in any one of claims 1 to 7.

9. A method for testing a wireless charging receiving chip, characterized in that: The wireless charging receiving chip is the wireless charging receiving chip according to any one of claims 1 to 7, and the testing method comprises: Sending mode configuration information to the wireless charging transmitting chip, so that the wireless charging transmitting chip responds to the mode configuration information, modulates the reference mode identifier into the AC power supply, and obtains test mode information; In response to the result that the reference mode identifier matches a preset target mode identifier, configuring the rectifier circuit to enter a target rectifier mode and the current pull circuit to enter a target pull mode, wherein the target pull mode corresponds to the target rectifier mode; Acquire rectification output information obtained by the rectification circuit rectifying the target power supply in the target rectification mode, and power supply load information obtained by the current load circuit from the rectification circuit in the target load mode; A rectification test result is generated according to the rectification output information and the power supply load information.

10. The testing method according to claim 9, characterized in that: The target mode identifier includes a diode rectification identifier, a half-bridge rectification identifier, and a full-bridge rectification identifier. The response to the result that the reference mode identifier matches the preset target mode identifier, configuring the rectification circuit to enter the target rectification mode includes: If the reference mode identifier is the diode rectification identifier, sending diode rectification information to the rectification circuit to make the rectification circuit enter a diode rectification mode; If the reference mode identifier is the half-bridge rectification identifier, sending half-bridge rectification information to the rectification circuit to make the rectification circuit enter a half-bridge rectification mode; If the reference mode identifier is the full-bridge rectification identifier, full-bridge rectification information is sent to the rectification circuit to enable the rectification circuit to enter a full-bridge rectification mode.

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