Power supply circuit system, activation method thereof, and storage medium

Abstract

The present application provides a power supply circuit system, an activation method thereof, and a storage medium. The activation method includes: in response to detecting a control pilot signal, obtaining the duty cycle of the control pilot signal; determining whether the duty cycle of the control pilot signal reaches a first threshold; in response to the duty cycle reaching the first threshold, activating a charging communication controller; in response to the duty cycle not reaching the first threshold, increasing the pulse width of the control pilot signal to at least a second threshold, where the second threshold is the minimum value of the pulse signal recognizable by the level detection circuit of the charging communication controller; and, in response to detecting a control pilot signal with a pulse width of the second threshold, activating the charging communication controller. The present application can reduce the energy consumption and complexity required to activate the charging communication controller.

Description

Technical Field

[0001] This application relates to the technical field of circuit systems for power supply or power distribution, and particularly to a power supply circuit system, an activation method thereof, and a storage medium. Background Art

[0002] A charging communication controller, also known as an Electric Vehicle Communication Controller (EVCC), is the core control module of an electric vehicle charging system. As the "translation center" of the electric vehicle charging system, it realizes the conversion between different charging protocols through protocol conversion and hardware adaptation, thus promoting the cross-border application of new energy vehicles. Usually, the charging communication controller will enter a low-power mode when it is in a non-working state to reduce energy consumption.

[0003] In the prior art, there are mainly two ways to activate the charging communication controller (that is, to switch from a non-working state to a working state or a charging state): First, activation is achieved through an external control signal, which requires continuous monitoring to determine the activation timing, resulting in high energy consumption and complexity; Second, continuously monitor the Control Pilot Function (CP) signal, that is, within a certain period, it is necessary to continuously monitor that the control pilot signal has been at a high level (that is, an effective state) to activate the charging communication controller. Continuously being at a high level also has problems of high energy consumption and high monitoring complexity. Summary of the Invention

[0004] In view of this, this application provides a power supply circuit system, an activation method thereof, and a storage medium, which can improve the problems of high energy consumption and complexity in activating the charging communication controller.

[0005] An activation method of a power supply circuit system provided by this application, the power supply circuit system includes a charging communication controller, and the activation method includes:

[0006] In response to detecting a control pilot signal, obtain the duty cycle of the control pilot signal;

[0007] Judge whether the duty cycle of the control pilot signal reaches a first threshold;

[0008] In response to the duty cycle reaching the first threshold, activate the charging communication controller;

[0009] In response to the duty cycle not reaching the first threshold, at least increase the pulse width of the control pilot signal to a second threshold, where the second threshold is the minimum value of the pulse signal that can be recognized by the level detection circuit of the charging communication controller; and,

[0010] Upon detecting a control pilot signal with a pulse width equal to the second threshold, activate the charging communication controller.

[0011] Optionally, the step of increasing the pulse width of the control pilot signal to at least the second threshold includes:

[0012] Double the pulse width of the control pilot signal as the second threshold;

[0013] Or,

[0014] Preset the correspondence between the duty cycle and the multiple for increasing the pulse width;

[0015] Determine the multiple corresponding to the duty cycle of the control pilot signal according to the correspondence;

[0016] Use the product of the pulse width of the control pilot signal and the determined multiple as the second threshold.

[0017] Optionally, after the duty cycle reaches the first threshold, the activation method further includes:

[0018] Detect and obtain the voltage change value of the proximity detection line of the charging communication controller;

[0019] Judge whether the voltage change value of the proximity detection line reaches the third threshold;

[0020] When the voltage change value reaches the third threshold, perform the step of activating the charging communication controller.

[0021] Optionally, after detecting a control pilot signal with a pulse width equal to the second threshold, the activation method further includes:

[0022] Detect and obtain the voltage change value of the proximity detection line of the charging communication controller;

[0023] Judge whether the voltage change value of the proximity detection line reaches the third threshold;

[0024] When the voltage change value reaches the third threshold, perform the step of activating the charging communication controller.

[0025] Optionally, the step of detecting and obtaining the voltage change value of the proximity detection line of the charging communication controller includes:

[0026] Regulate the voltage of the proximity detection line to the first voltage;

[0027] Connect a comparator between the proximity detection line and the level detection circuit and continuously apply the first voltage to the comparator;

[0028] The second voltage of the proximity detection line is detected and obtained through the comparator;

[0029] The difference between the first voltage and the second voltage is obtained through the comparator, and the difference is used as the voltage change value of the proximity detection line.

[0030] A power supply circuit system provided by the present application includes:

[0031] A control pilot line for outputting a control pilot signal;

[0032] A charging communication controller provided with a level detection circuit;

[0033] A delay spread circuit connected between the control pilot line and the level detection circuit;

[0034] Between the delay spread circuit and the charging communication controller, the charging communication controller is activated by the method described in any one of the above.

[0035] Optionally, the power supply circuit system further includes a ground wire, the ground wire and the control pilot line are respectively connected to the level detection circuit to form a closed loop, the delay spread circuit includes a capacitor, and one electrode of the capacitor is connected to the control pilot line and the other electrode is connected to the ground wire.

[0036] Optionally, the delay spread circuit further includes a voltage dividing module, and the voltage dividing module is connected between the control pilot line and the capacitor to adjust the voltage of the control pilot signal to the adapted voltage of the capacitor.

[0037] Optionally, the voltage dividing module includes a first resistor and a second resistor, the first resistor is connected in series with the control pilot line, and the second resistor is connected in parallel with the capacitor between the ground wire and the control pilot line.

[0038] A storage medium provided by the present application stores an activation program, and when the activation program is executed by a processor, the steps of the activation method described in any one of the above are implemented.

[0039] As described above, the present application can activate the charging communication controller only according to the control pilot signal without an external control signal, and for the control pilot signal under low power consumption, that is, when the duty cycle of the control pilot signal is relatively low, the control pilot signal can also be delay spread, and the pulse width of the control pilot signal is increased so that it can be recognized by the level detection circuit of the charging communication controller. Therefore, the present application can reduce the energy consumption and complexity required to activate the charging communication controller. Description of the Drawings

[0040] Figure 1It is a schematic flowchart of the activation method of the first power supply circuit system according to an embodiment of the present application;

[0041] Figure 2 It is an equivalent schematic diagram of a power supply circuit system provided by an embodiment of the present application;

[0042] Figure 3 It is a schematic flowchart of a method for increasing the pulse width to a second threshold in the present application;

[0043] Figure 4 It is a schematic flowchart of the activation method of the second power supply circuit system according to an embodiment of the present application;

[0044] Figure 5 It is an equivalent schematic diagram of another power supply circuit system provided by an embodiment of the present application;

[0045] Figure 6 It is a schematic flowchart of the activation method of the third power supply circuit system according to an embodiment of the present application. Detailed implementation manners

[0046] To solve the above problems existing in the prior art, the present application provides a power supply circuit system, its activation method, and a storage medium. These several protection subjects are based on the same concept, and the principles of solving problems are basically the same or similar. The implementation manners of each protection subject can be referred to each other, and the repeated parts will not be described in detail.

[0047] In the embodiment solution of the present application, without an external control signal, the charging communication controller can be activated only according to the control pilot signal. Moreover, for the control pilot signal under low power consumption, that is, when the duty cycle of the control pilot signal is relatively low, the control pilot signal can be time-delay extended, and the pulse width of the control pilot signal can be increased so that it can be recognized by the level detection circuit of the charging communication controller, thereby reducing the energy consumption and complexity required to activate the charging communication controller.

[0048] To make the purpose, technical solution, and advantages of the present application clearer, the technical solution of the present application will be clearly described below in conjunction with specific embodiments and corresponding drawings. Obviously, the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments. Without conflict, the following various embodiments and their technical features can be combined with each other, and they also belong to the technical solution of the present application.

[0049] Figure 1 It is a schematic flowchart of the activation method of the power supply circuit system according to an embodiment of the present application. The activation method of the power supply circuit system can also be simply referred to as the "activation method" or the "method". The execution subject of each step can be a suitable activation device or a power supply circuit system, etc. Specifically, which structural device in the activation device or the power supply circuit system executes it depends adaptively.

[0050] As Figure 1 shown, the activation method at least includes the following steps:

[0051] S1: In response to detecting a control pilot signal, obtain the duty cycle of the control pilot signal;

[0052] S2: Determine whether the duty cycle of the control pilot signal reaches a first threshold;

[0053] If the duty cycle reaches the first threshold, execute step S4: Activate the charging communication controller;

[0054] If the duty cycle does not reach the first threshold, execute step S3: Increase the pulse width of the control pilot signal to at least a second threshold, where the second threshold is the minimum value of the pulse signal that can be recognized by the level detection circuit of the charging communication controller; and, in response to detecting a control pilot signal with a pulse width of the second threshold, execute the step S4: Activate the charging communication controller.

[0055] Combined with Figure 2 shown, the power supply circuit system 100 includes a charging communication controller (i.e., the commonly referred to EVCC) 1, a control pilot wire 2, and a ground wire (also known as a protective earthing wire, abbreviated as PE) 3. The charging communication controller 1 is provided with a level detection circuit 10.

[0056] The control pilot wire 2 generates a control pilot signal, and this control pilot signal is manifested as a pulse signal. Its duty cycle represents the proportion of the energized time relative to the total time within a pulse cycle and can be regarded as the proportion of the effective state. The larger the duty cycle, the higher the proportion of the effective state, and the easier it is to detect the signal segment used to activate the charging communication controller 1; conversely, the smaller the duty cycle, the lower the proportion of the effective state, and the more difficult it is to detect the signal segment used to activate the charging communication controller 1.

[0057] Taking the power supply circuit system 100 applied to a charging pile with a charging gun as an example, the control pilot wire 2 is the CP wire, and the control pilot signal is the CP signal, which is mainly used to monitor the interaction between the electric vehicle and the charging pile. According to the current IEC61851 charging standard, the charging process is mainly divided into three stages: in the first stage when the charging gun is not currently connected to the electric vehicle, the control pilot signal is continuously 12V; in the second stage when the charging gun is connected to the electric vehicle, the voltage is reduced due to the presence of a voltage-dividing resistor in the on-board charger, and then the control pilot signal jumps to 9V; in the third stage, after the electric vehicle confirms the charging signal, it will switch the voltage-dividing resistor in the on-board charger, making the control pilot signal jump to 6V, and then the main relay of the charging pile can be closed to activate the charging communication controller 1 and start charging the electric vehicle. In any stage, the control pilot signal needs to continuously be at a high level (i.e., the effective state), which results in a relatively high power consumption regardless of which stage the charging communication controller 1 is activated. In an actual scenario, in the second stage when the control pilot signal jumps from 12V to 9V, the charging communication controller 1 can be activated.

[0058] For the control pilot signal with lower power consumption in this second stage of the present application, that is, when the duty cycle of the control pilot signal is relatively low, the pulse width of the control pilot signal can be increased, which is equivalent to performing a time-delay extension process on the control pilot signal, so that it can be recognized by the level detection circuit 10 of the charging communication controller 1, thereby activating the charging communication controller 1 under the conditions of low power consumption and low complexity.

[0059] In addition, the present application can activate the charging communication controller 1 only based on the control pilot signal without the need for an external control signal, and there is no need for continuous monitoring to determine the activation timing, thus reducing the energy consumption and complexity required to activate the charging communication controller 1.

[0060] The specific value of the first threshold can be adaptively determined according to actual requirements. For example, it can be determined according to the recognition ability of the level detection circuit 10 of the charging communication controller 1.

[0061] In one example, the first threshold can be any percentage value greater than 5%.

[0062] The pulse width is the absolute time of the effective state, or the duration of the high level corresponding to the effective state. Step S3 increases the pulse width of the control pilot signal, which is equivalent to performing a time-delay extension process on the control pilot signal, and can increase the time of the effective state, making it easier to detect.

[0063] Taking the case where the detected duty cycle of the control pilot signal is 5% as an example, the pulse width corresponding to this duty cycle is 50 μs at this time. Step S3 can increase the pulse width of 50 μs to 100 μs so that the level detection circuit 10 of the charging communication controller 1 can monitor it, thereby triggering the execution of step S4.

[0064] In one example, the present application can directly double the pulse width of the control pilot signal as the second threshold. According to research and multiple verification results, the pulse width after being directly doubled can be accurately recognized by the current various types of level detection circuits 10.

[0065] In another example, as Figure 3 shown, the method for obtaining the second threshold in step S3 includes the following steps:

[0066] S311. Preset the corresponding relationship between the duty cycle and the multiple of increasing the pulse width;

[0067] S312. Determine the multiple corresponding to the duty cycle of the control pilot signal according to the corresponding relationship;

[0068] S313. Take the product of the pulse width of the control pilot signal and the determined multiple as the second threshold.

[0069] That is to say, the present application can preset the corresponding multiple of increasing the pulse width for different duty cycles. For example, the corresponding relationship between the duty cycle and the multiple can be a negative correlation, that is, the larger the duty cycle, the smaller the corresponding determined multiple, and the smaller the duty cycle, the larger the corresponding determined multiple.

[0070] Figure 4 is a schematic flow chart of the second activation method of the power supply circuit system in the embodiment of the present application. For steps with the same content and components with the same name, the present application uses the same reference numerals for identification. Combining Figure 4 shown, the activation method of this example includes the following steps:

[0071] S1: In response to detecting the control pilot signal, obtain the duty cycle of the control pilot signal;

[0072] S2: Determine whether the duty cycle of the control pilot signal reaches the first threshold;

[0073] If the duty cycle does not reach the first threshold, then execute step S3: At least increase the pulse width of the control pilot signal to the second threshold, where the second threshold is the minimum value of the pulse signal that can be recognized by the level detection circuit of the charging communication controller; and, in response to detecting the control pilot signal with the pulse width of the second threshold, execute the step S4: Activate the charging communication controller.

[0074] If the duty cycle reaches the first threshold, step S41 is executed: detecting and acquiring a voltage change value of a proximity detection line of a charging communication controller; and,

[0075] Execute step S42: determine whether the voltage change value of the proximity detection line reaches a third threshold;

[0076] If the third threshold is reached, step S4 is executed: activating the charging communication controller.

[0077] If the third threshold value is not reached, it means that the activation result determined based on the control guidance signal is inaccurate, and the charging communication controller may not be activated, and steps S1 and S2 are continued.

[0078] Combination Figure 5 As shown, the power supply circuit system 100 of the present application may further include a proximity detection line 4. During the power supply process of the power supply circuit system 100, still taking the charging process of the current IEC 61851 charging standard as an example, the proximity detection line 4 is a proximity pilot (PP) line, one of the functions of which is to ensure the reliability of the hardware connection before charging by detecting the physical contact state between the charging plug of the charging gun and the charging port of the vehicle, such as being in an unconnected, semi-connected or fully connected state.

[0079] Compared to Figure 1 In the method shown in the example, when the duty cycle of the control pilot signal reaches the first threshold, the charging communication controller is not directly activated, but another dimension is further introduced to perform another judgment. Figure 1 On the basis of the beneficial effects of the method shown, this example can further ensure the accuracy of the judgment of whether to activate. Specifically, this example uses the voltage change of the proximity detection line (i.e., PP line) 4 as one of the judgment factors for whether to activate the charging communication controller 1. In the second stage of the charging process, monitor whether the voltage change value of the PP line 4 reaches the third threshold, and decide whether to execute the aforementioned step S4 based on the judgment result. The specific value of the third threshold can be determined according to the adaptability of actual needs, for example, it can be determined by referring to the voltage divider resistor in the vehicle charger. ‌

[0080] In one example, the method of detecting and obtaining the voltage change value of the proximity detection line, that is, the step S41, may include the following steps:

[0081] S411, stabilizing the proximity detection line at a first voltage;

[0082] S412, connecting a comparator between the proximity detection line and the level detection circuit, and continuously applying a first voltage to the comparator;

[0083] S413, obtaining a current second voltage of the proximity detection line through a comparator detection;

[0084] S414. Obtain the difference between the first voltage and the second voltage through a comparator, and use the difference as the voltage change value of the proximity detection line.

[0085] Continue to refer to Figure 5 , a voltage regulator 40, such as an LDO (low dropout regulator), can be connected to the PP line 4 in the power supply circuit system 100. The voltage regulator 40 is connected to the first power supply 51 and the first voltage is applied to the voltage regulator 40, so as to regulate the voltage of the PP line 4 to the first voltage. For example, the first voltage can be 5V; a comparator 41 is connected between the voltage regulator 40 and the level detection circuit 10. One input terminal of the comparator 41 is connected to the second power supply 52, and the other input terminal is connected to the PP line 4 to obtain the current second voltage of the PP line 4. The first voltage is applied to the comparator 41 through the second power supply 52. Among them, the second power supply 52 and the first power supply 51 can be the same power supply, such as the common power supply battery in the comparator 41; the comparator 41 compares the voltage values of the two input terminals, and uses the difference between the first voltage and the second voltage as the voltage change value of the PP line 4. When the voltage change value reaches the third threshold, it means that the level detection circuit 10 monitors that the voltage on the PP line 4 has changed greatly, and it can be considered that the charging gun has been successfully connected to the electric vehicle. At this time, the charging communication controller 1 can be activated.

[0086] Figure 6 is a schematic flowchart of the activation method of the third power supply circuit system according to the embodiment of the present application. Combining Figure 6 shown, the activation method of this example includes the following steps:

[0087] S1: In response to detecting a control pilot signal, obtain the duty cycle of the control pilot signal;

[0088] S2: Determine whether the duty cycle of the control pilot signal reaches a first threshold;

[0089] If the duty cycle reaches the first threshold, execute step S4: Activate the charging communication controller;

[0090] If the duty cycle does not reach the first threshold, execute step S3: At least increase the pulse width of the control pilot signal to a second threshold, where the second threshold is the minimum value of the pulse signal that can be recognized by the level detection circuit of the charging communication controller; and, in response to detecting a control pilot signal with a pulse width of the second threshold, execute step S321: Detect and obtain the voltage change value of the proximity detection line of the charging communication controller; and, execute step S322: Determine whether the voltage change value of the proximity detection line reaches a third threshold;

[0091] If the third threshold is reached, step S4 is executed: activate the charging communication controller.

[0092] If the third threshold is not reached, indicating that the activation result determined based on the control guidance signal is inaccurate, the charging communication controller may not be activated, and steps S1 and S2 are continued to be executed.

[0093] Based on the description of the foregoing Figure 4 method, the difference is that in this example, after increasing the pulse width of the control guidance signal to the second threshold, the charging communication controller is not directly activated, but further, the voltage change of the proximity detection line is used as one of the judgment factors for whether to activate the charging communication controller. Therefore, this example can also further ensure the accuracy of the judgment on whether to activate.

[0094] It should be understood that using the voltage change of the proximity detection line as one of the judgment factors for whether to activate the charging communication controller can be applied both after the duty cycle of the control guidance signal reaches the first threshold and before activating the charging communication controller, and can also be applied simultaneously after increasing the pulse width of the control guidance signal to at least the second threshold and before activating the charging communication controller, which will not be elaborated here.

[0095] The embodiment of the present application also provides a power supply circuit system. As Figure 2 shown, the power supply circuit system 100 includes a charging communication controller 1, a control guiding line 2, a ground line 3, and a time delay extension circuit 6.

[0096] The charging communication controller 1 is provided with a level detection circuit 10.

[0097] The control guiding line 2 is used to output a control guidance signal.

[0098] The time delay extension circuit 6 is connected between the control guiding line 2 and the level detection circuit 10.

[0099] The ground line 3, also known as the Protective Earthing (abbreviated as PE), and the control guiding line 2 are respectively connected to the level detection circuit 10 to form a closed loop.

[0100] Between the time delay extension circuit 6 and the charging communication controller 1, the charging communication controller 1 is activated by the method of any of the foregoing examples, so the steps in the activation method of the power supply circuit system of any embodiment provided by the present application can be executed, and the beneficial effects achievable by the activation methods of any of the foregoing embodiments can be achieved. For details, see the foregoing embodiments, which will not be elaborated here.

[0101] In one example, the delay spread circuit 6 includes a capacitor 61. One electrode of the capacitor 61 is connected to the control guide wire 2, and the other electrode is connected to the ground wire 3. When the control guide wire 2 transmits a control guide signal, the capacitor 61 will be charged or discharged, and there will be a certain time delay in this charging or discharging process, so as to perform delay spread processing on the control guide signal, thereby increasing the pulse width of the control guide signal to at least the second threshold. In this example, the pulse width of the control guide signal can be increased only by one capacitor 61, and the circuit structure is simple and easy to implement.

[0102] In one example, as Figure 2 shown, the delay spread circuit 6 further includes a voltage dividing module. The voltage dividing module is connected between the control guide wire 2 and the capacitor 61 to adjust the voltage of the control guide signal to the adapted voltage of the capacitor 61. For example, the voltage dividing module includes a first resistor 62 and a second resistor 63. The first resistor 62 is connected in series with the control guide wire 2, and the second resistor 63 is connected in parallel with the capacitor 61 between the ground wire 3 and the control guide wire 2. The circuit structure of the voltage dividing module is simple and easy to implement, and on the path where the control guide signal is transmitted to the capacitor 61, the first resistor 62 and the capacitor 61 can be regarded as connected in series, so as to form an RC (Resistor-Capacitor) delay circuit, and the control guide signal can also be subjected to delay spread processing.

[0103] It should be understood that the power supply circuit system 100 may further include other electronic components. For example, the power supply circuit system 100 may further include Figure 2 the diode 7 shown in the figure. The positive electrode of the diode 7 is connected to the input end of the control guide wire 2, and the negative electrode is connected to the delay spread circuit 6. Specifically, the negative electrode thereof may be connected to the first resistor 62 so that the control guide signal can only be transmitted in the forward direction, playing a role in stabilizing the voltage. Another example is that the power supply circuit system 100 may further include Figure 5 the PP wire 4, the voltage regulator 40, the comparator 41, the first power supply 51, and the second power supply 52 shown in the figure. The connection manners between these electronic components can be referred to those described in the above method embodiments, and will not be elaborated here.

[0104] The embodiment of the present application further provides a storage medium, on which an activation program of the power supply circuit system is stored. The activation program is essentially a computer program. When the activation program is executed by a processor, the steps of the activation method of the power supply circuit system in any example are implemented.

[0105] The storage medium includes, but is not limited to, any one of read-only memory (ROM), random access memory (RAM), magnetic disks, and optical discs.

[0106] Since the program stored in the storage medium can execute the steps in the activation method of the power supply circuit system according to any embodiment provided in this application, the beneficial effects achievable by the activation method of any of the foregoing embodiments can be realized. For details, see the foregoing embodiments and will not be elaborated here.

[0107] An embodiment of this application also provides an activation device or chip, including a memory and a processor. An activation program of the power supply circuit system is stored on the memory. When the activation program is executed by the processor, the steps of the activation method of the power supply circuit system according to any of the foregoing embodiments are implemented; and / or, the activation device or chip is provided with a storage medium as exemplified above, and the processor loads the storage medium to execute the steps of the activation method, thereby realizing the beneficial effects achievable by the corresponding example of the activation method.

[0108] The above are only partial embodiments of this application and do not limit the patent scope of this application. For those of ordinary skill in the art, any equivalent structural transformation made using the content of this specification and the drawings is equally included in the patent protection scope of this application.

[0109] Step codes such as S1 and S2 are used in this article. The purpose is to more clearly and briefly express the corresponding content and does not constitute a substantial limitation in order. Those skilled in the art may execute S3 first and then S1 during specific implementation, etc., but these should all be within the protection scope of this application.

[0110] Although terms such as "first" and "second" are used in this article to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. In addition, the singular forms "a", "an", and "the" are also intended to include the plural forms. The terms "or" and "and / or" are interpreted inclusively, or mean any one or any combination. An exception to this definition only occurs when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

Claims

1. A method for activating a power supply circuit system, the power supply circuit system including a charging communication controller, characterized in that, The activation method includes: In response to detecting a control pilot signal, obtaining the duty cycle of the control pilot signal; Judging whether the duty cycle of the control pilot signal reaches a first threshold; In response to the duty cycle reaching the first threshold, detecting and obtaining the voltage change value of the proximity detection line of the charging communication controller, and judging whether the voltage change value of the proximity detection line reaches a third threshold, and activating the charging communication controller when the voltage change value reaches the third threshold; In response to the duty cycle not reaching the first threshold, increasing the pulse width of the control pilot signal to at least a second threshold, including: doubling the pulse width of the control pilot signal as the second threshold, or presetting the correspondence between the duty cycle and the multiple of increasing the pulse width, and determining the multiple corresponding to the duty cycle of the control pilot signal according to the correspondence, and taking the product of the pulse width of the control pilot signal and the determined multiple as the second threshold; wherein, the second threshold is the minimum value of the pulse signal recognizable by the level detection circuit of the charging communication controller; and, In response to detecting a control pilot signal with a pulse width of the second threshold, detecting and obtaining the voltage change value of the proximity detection line of the charging communication controller, and judging whether the voltage change value of the proximity detection line reaches a third threshold, and activating the charging communication controller when the voltage change value reaches the third threshold.

2. The activation method according to claim 1, wherein The detecting and obtaining the voltage change value of the proximity detection line of the charging communication controller includes: Stabilizing the proximity detection line at a first voltage; Connecting a comparator between the proximity detection line and the level detection circuit, and continuously applying the first voltage to the comparator; Detecting and obtaining the current second voltage of the proximity detection line through the comparator; Obtaining the difference between the first voltage and the second voltage through the comparator, and taking the difference as the voltage change value of the proximity detection line.

3. A power supply circuit system, characterized in that, Includes: A control pilot line for outputting a control pilot signal; A charging communication controller provided with a level detection circuit; A delay extension circuit connected between the control pilot line and the level detection circuit; Between the delay extension circuit and the charging communication controller, the charging communication controller is activated by the method according to claim 1 or 2.

4. The power supply circuit system according to claim 3, characterized in that, The power supply circuit system further includes a ground wire, the ground wire and the control pilot line are respectively connected to the level detection circuit to form a closed loop, the delay extension circuit includes a capacitor, and one electrode of the capacitor is connected to the control pilot line and the other electrode is connected to the ground wire.

5. The power supply circuit system according to claim 4, wherein The delay extension circuit further includes a voltage dividing module, and the voltage dividing module is connected between the control pilot line and the capacitor to adjust the voltage of the control pilot signal to the adaptive voltage of the capacitor.

6. The power supply circuit system according to claim 5, wherein The voltage dividing module includes a first resistor and a second resistor, the first resistor is connected in series with the control pilot line, and the second resistor is connected in parallel with the capacitor between the ground wire and the control pilot line.

7. A storage medium, characterized in that, Stored with an activation program, when the activation program is executed by a processor, the steps of the activation method described in claim 1 or 2 are implemented.

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