Power supply circuit system, activation method thereof and storage medium

Abstract

The invention provides a power supply circuit system, an activation method thereof and a storage medium. The power supply circuit system comprises a charging communication controller, an approaching guide wire and a control guide wire, the approaching guide wire and the control guide wire are connected to the charging communication controller, and the activation method comprises the following steps: a first power supply is externally connected to continuously apply a first voltage to the approaching guide wire, so that the approaching guide wire is stabilized at the first voltage; the first voltage is lower than the voltage of the control guide wire when the power supply circuit system is not connected to the to-be-charged equipment; detecting and acquiring a voltage change value approaching the guide wire; judging whether the voltage change value close to the guide wire reaches a first threshold value or not; a charging communication controller is activated in response to the voltage change value reaching a first threshold. According to the invention, the energy consumption and complexity required for activating the charging communication controller can be reduced.

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 in the non-working state to reduce energy consumption.

[0003] In the prior art, there are mainly three ways to activate the charging communication controller (i.e., switch from the non-working state to the working state or the 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 (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 (i.e., the 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; Third, continuously monitor the resistance value change data transmitted by the Proximity Pilot (PP) line to determine whether the charging interface connection is qualified, and activate the charging communication controller when it is qualified. However, the existing resistance network of the proximity pilot line is very complex, making the circuit structure relatively complex. This not only makes the voltage of the proximity pilot line always in a high voltage state when the charging gun is not inserted, resulting in high energy consumption, but also usually requires monitoring the voltage changes of multiple circuit nodes such as the S3 switch, resulting in 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, a proximity pilot line and a control pilot line connected to the charging communication controller, and the activation method includes:

[0006] Connect an external first power supply to continuously apply a first voltage to the proximity pilot line, so that the proximity pilot line is stabilized at the first voltage, and the first voltage is lower than the voltage of the control pilot line when the power supply circuit system is not connected to the device to be charged.

[0007] Detect and obtain the voltage change value of the proximity lead wire;

[0008] Determine whether the voltage change value of the proximity lead wire reaches a first threshold;

[0009] In response to the voltage change value reaching the first threshold, activate the charging communication controller.

[0010] Optionally, the detecting and obtaining the voltage change value of the proximity lead wire of the charging communication controller includes:

[0011] Connect a comparator between the proximity lead wire and the charging communication controller, and continuously apply the first voltage to the comparator through a second power supply;

[0012] Detect and obtain the current second voltage of the proximity lead wire through the comparator;

[0013] Obtain the difference between the first voltage and the second voltage through the comparator, and use the difference as the voltage change value of the proximity lead wire.

[0014] Optionally, the charging communication controller includes a level detection circuit, and the proximity lead wire is connected to the level detection circuit; the control lead wire is connected to the level detection circuit to transmit a control pilot signal to the level detection circuit; the first threshold is the voltage difference corresponding to the level detection circuit recognizing that the control pilot signal enters the second stage from the first stage; the first stage is the stage when the power supply circuit system is not connected to the device to be charged, and the second stage is the stage when the power supply circuit system is connected to the device to be charged.

[0015] Optionally, the charging communication controller includes a level detection circuit, and the proximity lead wire is connected to the level detection circuit; the first threshold is the minimum voltage corresponding to the level threshold recognizable by the level detection circuit.

[0016] Optionally, the first threshold is V0, the first voltage is V1, and the input voltage of the proximity lead wire is V, and V0 ≤ |V - 2 * V1|.

[0017] Optionally, the activation method further includes:

[0018] Connect an oscillator and a delay extension circuit between the comparator and the charging communication controller;

[0019] The proximity pilot wire is converted into a modulation signal through the oscillator based on the proximity pilot signal output via the comparator, and the pulse width of the modulation signal is increased by at least a second threshold through the delay spread circuit, where the second threshold is the minimum value of the pulse signal recognizable by the level detection circuit of the charging communication controller;

[0020] After the voltage change value reaches the first threshold, the activation method further includes:

[0021] Determining whether the level detection circuit detects a modulation signal with a pulse width greater than or equal to the second threshold;

[0022] When a modulation signal with a pulse width greater than or equal to the second threshold is detected, perform the step of activating the charging communication controller.

[0023] A power supply circuit system provided by the present application includes:

[0024] A charging communication controller;

[0025] A proximity pilot wire connected to the charging communication controller;

[0026] A control pilot wire connected to the charging communication controller;

[0027] A first power supply for continuously applying a first voltage to the proximity pilot wire to keep the proximity pilot wire at a stable voltage of the first voltage, where the first voltage is lower than the voltage of the control pilot wire when the power supply circuit system is not connected to the device to be charged;

[0028] A voltage change detection circuit connected to the proximity pilot wire for detecting and obtaining the voltage change value of the proximity pilot wire;

[0029] The charging communication controller is further configured to determine whether the voltage change value of the proximity pilot wire reaches a first threshold, and activate when it is determined that the voltage change value reaches the first threshold.

[0030] Optionally, the voltage change detection circuit includes a voltage regulator, a comparator, and a second power supply; the voltage regulator is connected between the first power supply and the proximity pilot wire for keeping the proximity pilot wire at a stable voltage of the first voltage; the comparator is connected to the proximity pilot wire and between the voltage regulator and the charging communication controller; the second power supply is connected to the comparator for continuously applying a first voltage to the comparator; the comparator is further configured to detect and obtain the current second voltage of the proximity pilot wire, and obtain the difference between the first voltage and the second voltage as the voltage change value of the proximity pilot wire.

[0031] Optionally, the second power supply and the first power supply are the same power supply, and both are the power supply batteries in the comparator.

[0032] A storage medium provided by the present application stores an activation program. When the activation program is executed by a processor, the steps of the activation method described in any one of the above are implemented.

[0033] As described above, the present application can activate the charging communication controller only based on the voltage change value of the proximity lead without an external control signal. In addition, by connecting an external first power supply, the proximity lead is stabilized at the first voltage, and whether to activate the charging communication controller is determined according to the voltage change value of the proximity lead. This first voltage is lower than the voltage of the control lead when the power supply circuit system is not connected to the device to be charged, so that the energy consumption required for activation is low, and this voltage change detection method allows implementation through a relatively simple circuit structure. Compared with the traditional resistor network, the monitoring complexity can be reduced. Generally speaking, the present application can reduce the energy consumption and complexity required to activate the charging communication controller. Description of the Drawings

[0034] Figure 1 is a schematic flowchart of the activation method of the first power supply circuit system according to an embodiment of the present application;

[0035] Figure 2 is an equivalent schematic diagram of a power supply circuit system provided by an embodiment of the present application;

[0036] Figure 3 is a schematic flowchart of the activation method of the second power supply circuit system according to an embodiment of the present application;

[0037] Figure 4 is a schematic flowchart of the activation method of the third power supply circuit system according to an embodiment of the present application;

[0038] Figure 5 is an equivalent schematic diagram of another power supply circuit system provided by an embodiment of the present application. Detailed Embodiments

[0039] 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 themes are based on the same concept, and the principles of solving problems are basically the same or similar. The implementation manners of each protection theme can be referred to each other, and the repeated parts will not be elaborated.

[0040] In the embodiment solution of the present application, it is not necessary to activate the charging communication controller through an external control signal, and it can be activated only according to the control guiding signal. In addition, by connecting an external first power supply, the proximity guiding wire is stabilized at a first voltage, and whether to activate the charging communication controller is determined according to the voltage change value of the proximity guiding wire. This first voltage is lower than the voltage of the control guiding wire when the power supply circuit system is not connected to the device to be charged, so that the energy consumption required for activation is relatively low, and this voltage change detection method allows implementation through a relatively simple circuit structure, resulting in a lower monitoring complexity compared to traditional resistor networks.

[0041] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions 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 embodiments. Without conflict, the following various embodiments and their technical features can be combined with each other, and they also belong to the technical solutions of the present application.

[0042] 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 "method". The execution subject of each step can be a suitable activation device or power supply circuit system, etc. Specifically, which structural device in the activation device or power supply circuit system executes it depends adaptively.

[0043] As Figure 1 shown, the activation method at least includes the following steps:

[0044] S1: Connect an external first power supply to continuously apply a first voltage to the proximity guiding wire to stabilize the proximity guiding wire at the first voltage, and the first voltage is lower than the voltage of the control guiding wire when the power supply circuit system is not connected to the device to be charged;

[0045] S2: Detect and obtain the voltage change value of the proximity guiding wire;

[0046] S3: Determine whether the voltage change value of the proximity guiding wire reaches a first threshold;

[0047] If the voltage change value reaches the first threshold, then execute step S4: Activate the charging communication controller;

[0048] If the voltage change value does not reach the first threshold, the voltage change event of the proximity guiding wire can be ignored this time and continue to detect, that is, execute steps S1 and S2 until the voltage change value of the proximity guiding wire is detected to reach the first threshold next time, and then execute the step S4: Activate the charging communication controller.

[0049] Combined with Figure 2As 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, a ground wire (also known as a protective earthing wire, abbreviated as PE) 3, and a proximity pilot wire 4. The charging communication controller 1 may be provided with a level detection circuit 10, and the control pilot wire 2 and the proximity pilot wire 4 are respectively connected to the level detection circuit 10.

[0050] The proximity pilot wire 4 generates a proximity pilot signal, and the proximity pilot signal is presented as a DC signal.

[0051] The control pilot wire 2 generates a control pilot signal, and the control pilot signal is presented as a pulse signal.

[0052] 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 a 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 remains at 12V continuously; in the second stage when the charging gun is connected to the electric vehicle, the voltage is reduced due to the existence of a voltage-dividing resistor in the on-vehicle charger, and 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-vehicle charger, making the control pilot signal jump to 6V, and 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 in a high level (i.e., an effective state), which results in a relatively high power consumption regardless of which stage the charging communication controller 1 is activated.

[0053] In any of the above stages, as the proximity pilot wire 4 which is a PP wire, one of its functions is to detect the physical contact state between the charging plug of the charging gun and the vehicle charging port, such as a fully connected state, a non-connected state, and a semi-connected state. The proximity pilot wire 4 is connected to the interface of the electric vehicle through a fixed resistor network (such as 2.7 kΩ or 1.5 kΩ) to form a DC voltage loop. For example, when the charging gun is not inserted, the proximity pilot wire 4 remains in an open state with a voltage of 0V; after the plug is fully inserted, through resistor voltage division, the proximity pilot wire 4 generates a specific voltage value (such as 6V or 9V) to determine the successful entry into the charging connection state. 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. At the same time, when the charging gun is not inserted, the voltage of the proximity pilot wire 4 always remains at a high voltage state such as 12V, resulting in a relatively high power consumption.

[0054] In such as Figure 2In the power supply circuit system 100 shown, in this application, the first external power supply 51 is used to stabilize the voltage of the proximity lead wire 4 at the first voltage, so as to determine whether to activate the charging communication controller 1 according to the voltage change value of the proximity lead wire 4. When the voltage change value reaches the first threshold, it indicates that the voltage of the proximity lead wire 4 changes greatly, and it can be considered that the access state of the charging gun has changed, that is, it jumps from the non-access state to the semi-access state or the full-access state. However, no matter which state it jumps to, it means that the charging gun has established a connection with the electric vehicle. At this time, the charging communication controller 1 can be activated. Since the first voltage is lower than the voltage of the control lead wire 2 when the power supply circuit system 100 does not access the device to be charged, that is, lower than the voltage of the aforementioned CP line 2 in the first stage (such as 12V), for example, this first voltage can be implemented as 5V, so that the energy consumption required to activate the charging communication controller 1 is lower.

[0055] In addition, in this application, only based on the voltage change value of the proximity lead wire 4, that is, the proximity guidance signal, without the need for an external control signal, the charging communication controller 1 can be activated. Without continuous monitoring, the activation timing can be determined, which can also reduce the energy consumption and complexity required to activate the charging communication controller 1.

[0056] Moreover, this lower regulated voltage and the voltage change detection method based on it allow it to be implemented through a relatively simple circuit structure. Compared with the traditional resistor network of the PP line 4, the monitoring complexity can be reduced. For example, continue to refer to Figure 2 As shown, 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 first power supply 51 is connected to the voltage regulator 40 and a first voltage is applied to the voltage regulator 40, so as to stabilize the voltage of the PP line 4 at the first voltage, for example, 5V; at this time, the input voltage of the PP line 4 can be zero, that is, the charging pile stops supplying power to the PP line 4; 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, for example, the common power supply battery in the comparator 41; the comparator 41 compares the voltage values of the two input terminals, and takes the difference between the first voltage and the second voltage as the voltage change value of the PP line 4, and transmits it to the level detection circuit 10 of the electric communication controller 1. When the voltage change value reaches the first threshold, it indicates that the charging gun is connected to the electric vehicle. At this time, the charging communication controller 1 can be activated.

[0057] Based on this, as Figure 3 shown, the step S2 can be implemented as including the following steps:

[0058] S21: Connect a comparator between the proximity lead and the charging communication controller, and continuously apply a first voltage to the comparator through a second power supply;

[0059] S22: Detect and obtain the current second voltage of the proximity lead through the comparator;

[0060] S23: Obtain the difference between the first voltage and the second voltage through the comparator, and use the difference as the voltage change value of the proximity lead.

[0061] In this example, the voltage change value of the proximity lead can be detected through a comparator and a second power supply. The circuit structure is simple, easy to implement, and both the energy consumption and the monitoring complexity are relatively low.

[0062] The specific value of the first threshold can be determined adaptively according to actual requirements.

[0063] In one example, as shown in Figure 2 For the charging communication controller 1 provided with the level detection circuit 10, it can be determined according to the recognition ability of the level detection circuit 10. For example, the first threshold is the minimum voltage corresponding to the level threshold that the level detection circuit 10 can recognize. Here, in this example, the setting of the first threshold is associated with the recognition ability of the level detection circuit 10 to ensure the accuracy of activation monitoring.

[0064] In another example, as shown in Figure 2 For the scenario where the charging communication controller 1 provided with the level detection circuit 10 and the power supply circuit system 100 is provided with the control lead 2, the first threshold can be the voltage difference corresponding to the control pilot signal recognized by the level detection circuit 10 when it enters the second stage from the first stage. Among them, the first stage is the stage when the power supply circuit system 100 is not connected to the device to be charged (such as an electric vehicle). The voltage corresponding to this first stage is, for example, 12V. The second stage is the stage when the power supply circuit system 100 is connected to the device to be charged. The voltage corresponding to this second stage is, for example, 9V. Then the voltage difference corresponding to the control pilot signal when it enters the second stage from the first stage is 3V. The minimum value of the first threshold can be this voltage difference, that is, 3V. Here, in this example, the setting of the first threshold is associated with the control pilot signal of the control lead 2, and the feasibility of setting the first threshold is ensured through more dimensions, and finally the accuracy of activation monitoring is ensured.

[0065] In yet another example, the present application can set the first threshold according to the relational expression V0≤|V–2*V1|, where V0 is the first threshold, V1 is the first voltage, and V is the input voltage of the proximity lead. In Figure 2In the power supply circuit system 100 shown, V is the voltage output by the charging pile to the proximity guiding wire 4, which can be referred to as the initial power supply voltage. For example, it is the voltage output by the charging pile to the proximity guiding wire 4 when the control guiding signal enters the second stage. Herein, the second voltage is |V - V1|, that is, the absolute value of (V - V1). The difference between the first voltage and the second voltage is |V - 2*V1|, that is, the absolute value of (V - 2*V1). The first threshold is greater than or equal to this difference.

[0066] Figure 4 It is a schematic flowchart of another activation method for the power supply circuit system of an 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 As shown, the activation method of this example includes the following steps:

[0067] S1: Connect an external first power supply to continuously apply a first voltage to the proximity guiding wire, so that the proximity guiding wire is stabilized at the first voltage. The first voltage is lower than the voltage of the control guiding wire when the power supply circuit system is not connected to the device to be charged.

[0068] S21: Connect a comparator between the proximity guiding wire and the charging communication controller, and continuously apply a first voltage to the comparator through a second power supply.

[0069] S22: Detect and obtain the current second voltage of the proximity guiding wire through the comparator.

[0070] S23: Obtain the difference between the first voltage and the second voltage through the comparator, and use the difference as the voltage change value of the proximity guiding wire.

[0071] S24: Connect an oscillator and a time delay extension circuit between the comparator and the charging communication controller.

[0072] S25: Convert the proximity guiding signal output by the proximity guiding wire via the comparator into a modulation signal through the oscillator, and at least increase the pulse width of the modulation signal to a second threshold through the time delay extension circuit. The second threshold is the minimum value that the level detection circuit of the charging communication controller can recognize a pulse signal.

[0073] S3: Determine whether the voltage change value of the proximity guiding wire reaches the first threshold.

[0074] If the voltage change value reaches the first threshold, then execute step S40: Determine whether the level detection circuit detects a modulation signal with a pulse width greater than or equal to the second threshold.

[0075] When a modulation signal with a pulse width greater than or equal to a second threshold is detected, step S4 is executed: activate the charging communication controller; when a modulation signal with a pulse width greater than or equal to the second threshold is not detected, step S4 is not executed, and steps S1 and S2 can be returned to and continued until the voltage change value close to the pilot wire detected next time reaches the first threshold, and then the said step S4 is executed.

[0076] If the voltage change value does not reach the first threshold, the voltage change event close to the pilot wire this time can be ignored and the detection continued, that is, steps S1 and S2 are executed until the voltage change value close to the pilot wire detected next time reaches the first threshold, and then the said step S4: activate the charging communication controller is executed.

[0077] Among them, steps S24 and S25 can be executed before step S3 or after step S3. The step numbers are only for exemplary display, as long as they are executed before step S40.

[0078] Combined Figure 5 As shown, the power supply circuit system 100 of the present application can also include an oscillator 61 and a time delay extension circuit 62. The output of the pilot wire 4 is a DC level, and the oscillator 61 can convert this DC level into an AC signal to obtain a modulation signal, also known as a pulse signal or a pulse modulation signal. The duty cycle of this modulation signal is positively correlated with the power consumption, that is, the lower the duty cycle, the lower the power consumption. The so-called 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 it is easier to detect the signal segment used to activate the charging communication controller 1; on the contrary, the smaller the duty cycle, the lower the proportion of the effective state, and it is more difficult to detect the signal segment used to activate the charging communication controller 1.

[0079] Here, for this modulation signal under low power consumption, that is, when the duty cycle of this modulation signal is relatively low, the time delay extension circuit 62 can increase the pulse width of this modulation signal. For example, the pulse width of the control pilot signal can be directly doubled as the second threshold. According to research and multiple verification results, the pulse width directly doubled can be accurately recognized by the current various types of level detection circuits 10 so that it can be recognized by the level detection circuit 10 of the charging communication controller 1, thereby realizing the activation of the charging communication controller 1 under low power consumption and low complexity.

[0080] Compared with Figure 1 As shown in the activation method, in this example, when it is determined that the voltage change value close to the pilot wire reaches the first threshold, the charging communication controller is not directly activated, but another dimension is further introduced for re-judgment, in order to achieve the foregoing Figure 1Based on the beneficial effects of the activation method shown, this example can further ensure the accuracy of the judgment on whether activation occurs.

[0081] In other examples, different from Figure 5 As shown, the oscillator 61 and the time delay extension circuit 62 are connected in series with the proximity guide wire 4 and are between the comparator 41 and the level detection circuit 10. The oscillator 61 and the time delay extension circuit 62 can be connected in series and then in parallel with the proximity guide wire 4. A resistor can be provided in the proximity guide wire 4 between the comparator 41 and the level detection circuit 10 to avoid short - circuit.

[0082] The specific structure of the time delay extension circuit 62 can be determined adaptively according to actual requirements. For example, the time delay extension circuit 62 can include a capacitor. One electrode of the capacitor is connected to the oscillator 61 and the other electrode is connected to the ground wire 3. When the proximity guide wire 4 transmits a proximity guide signal, the capacitor will be charged or discharged, and this charging or discharging process will have a certain time delay, thereby performing time delay extension processing on the proximity guide signal, so as to increase the pulse width of the proximity guide signal to at least the second threshold. In this example, only one capacitor can be used to increase the pulse width of the control guide signal, and the circuit structure is simple and easy to implement.

[0083] 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 guide wire 2, a ground wire 3, a proximity guide wire 4, a first power supply 51, and a voltage - change detection circuit 5.

[0084] The proximity guide wire 4 is connected to the charging communication controller 1;

[0085] The control guide wire 2 is connected to the charging communication controller 1;

[0086] The first power supply 51 is used to continuously apply a first voltage to the proximity guide wire 4 to make the proximity guide wire 4 stabilized at the first voltage, and the first voltage is lower than the voltage of the control guide wire 2 when the power supply circuit system 100 is in the stage of not being connected to the device to be charged;

[0087] The voltage - change detection circuit 5 is connected to the proximity guide wire 4 and is used to detect and obtain the voltage change value of the proximity guide wire 4;

[0088] The charging communication controller 1 is further used to judge whether the voltage change value of the proximity guide wire 4 reaches a first threshold, and to activate when it is determined that the voltage change value reaches the first threshold.

[0089] In one example, the voltage change detection circuit 5 may include a voltage regulator 40, a comparator 41, and a second power supply 52; the voltage regulator 40 is connected between the first power supply 51 and the proximity lead 4 for regulating the voltage of the proximity lead 4 to a first voltage; the comparator 41 is connected to the proximity lead 4 and is also connected between the voltage regulator 40 and the charging communication controller 1; the second power supply 52 is connected to the comparator 41 for continuously applying a first voltage to the comparator 41; the comparator 41 is further configured to detect and obtain the current second voltage of the proximity lead 4, and obtain the difference between the first voltage and the second voltage, which is used as the voltage change value of the proximity lead 4.

[0090] Among the above-mentioned electronic components of the power supply circuit system 100, the charging communication controller 1 is activated by the method of any one of the above examples. Therefore, the steps in the activation method of the power supply circuit system of any embodiment provided in the present application can be executed, and the beneficial effects achievable by the activation method of any one of the foregoing embodiments can be realized. For details, refer to the foregoing embodiments and will not be elaborated herein.

[0091] 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 resistor 43 shown in the figure, which is connected between the voltage regulator 40 and the proximity lead 4, and together with the voltage regulator 40, serves to stabilize the first voltage. Another example is that the power supply circuit system 100 may further include Figure 5 the oscillator 61 and the delay extension circuit 62 shown in the figure. The connection manners among these electronic components can be referred to the method embodiments above and will not be elaborated herein.

[0092] An embodiment of the present application further provides a storage medium, on which an activation program for the power supply circuit system is stored. This activation program is essentially a computer program. When this activation program is executed by a processor, the steps of the activation method of the power supply circuit system of any example are implemented.

[0093] The storage medium includes but is not limited to any one of a read-only memory (ROM), a random access memory (RAM), a magnetic disk, and an optical disc.

[0094] Since the program stored in the storage medium can execute the steps in the activation method of the power supply circuit system of any embodiment provided in the present application, the beneficial effects achievable by the activation method of any one of the foregoing embodiments can be realized. For details, refer to the foregoing embodiments and will not be elaborated herein.

[0095] The embodiments of the present application further provide 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 in 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 achieving the beneficial effects that the corresponding example of the activation method can achieve.

[0096] The above are only some embodiments of the present application, and thus do not limit the patent scope of the present application. For those of ordinary skill in the art, all equivalent structural transformations made by using the content of this specification and the drawings are equally included in the patent protection scope of the present application.

[0097] In this article, step codes such as S1, S2, etc. are used. The purpose is to more clearly and briefly express the corresponding content and do not constitute a substantial limitation in order. Those skilled in the art may execute S3 first and then S1, etc. during specific implementation, but these should all be within the protection scope of the present application.

[0098] Although terms such as "first", "second", etc. are used in this article to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. Additionally, 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 comprising a charging communication controller and a proximity guiding wire and a control guiding wire connected to the charging communication controller, characterized in that the activation method comprises: externally connecting a first power supply to continuously apply a first voltage to the proximity guiding wire, so that the proximity guiding wire is stabilized at the first voltage, and the first voltage is lower than the voltage of the control guiding wire when the power supply circuit system is not connected to the device to be charged; detecting and obtaining the voltage change value of the proximity guiding wire; judging whether the voltage change value of the proximity guiding wire reaches a first threshold; responding to the voltage change value reaching the first threshold to activate the charging communication controller.

2. The activation method according to claim 1, wherein The detecting and obtaining the voltage change value of the proximity guiding wire includes: connecting a comparator between the proximity guiding wire and the charging communication controller, and continuously applying the first voltage to the comparator through a second power supply; detecting and obtaining the current second voltage of the proximity guiding wire 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 guiding wire.

3. The activation method according to claim 1 or 2, characterized in that, The charging communication controller includes a level detection circuit, the proximity guiding wire is connected to the level detection circuit; the control guiding wire is connected to the level detection circuit to transmit a control guiding signal to the level detection circuit; The first threshold is the voltage difference corresponding to the control guiding signal recognized by the level detection circuit when entering the second stage from the first stage; the first stage is the stage when the power supply circuit system is not connected to the device to be charged, and the second stage is the stage when the power supply circuit system is connected to the device to be charged.

4. The activation method according to claim 1 or 2, characterized in that The charging communication controller includes a level detection circuit, and the proximity guiding wire is connected to the level detection circuit; The first threshold is the minimum voltage corresponding to the level threshold recognizable by the level detection circuit.

5. The activation method according to claim 1 or 2, characterized in that The first threshold is V0, the first voltage is V1, and the input voltage of the proximity guiding wire is V, and V0 ≤ |V - 2*V1|.

6. According to the activation method described in claim 2, characterized in that the activation method further includes: connecting an oscillator and a time delay extension circuit between the comparator and the charging communication controller; converting the proximity guiding signal output by the proximity guiding wire via the comparator into a modulation signal through the oscillator, and increasing the pulse width of the modulation signal to at least a second threshold through the time delay extension circuit, wherein the second threshold is the minimum value of the pulse signal recognizable by the level detection circuit of the charging communication controller; after responding to the voltage change value reaching the first threshold, the activation method further includes: judging whether the level detection circuit detects a modulation signal with a pulse width greater than or equal to the second threshold; when detecting a modulation signal with a pulse width greater than or equal to the second threshold, performing the step of activating the charging communication controller.

7. A power supply circuit system, characterized in that, including: a charging communication controller; a proximity guiding wire, connected to the charging communication controller; a control guiding wire, connected to the charging communication controller; A first power supply for continuously applying a first voltage to the proximity lead wire to stabilize the voltage of the proximity lead wire at the first voltage, where the first voltage is lower than the voltage of the control lead wire when the power supply circuit system is not connected to the device to be charged; A voltage change detection circuit connected to the proximity lead wire for detecting and obtaining the voltage change value of the proximity lead wire; The charging communication controller is further configured to determine whether the voltage change value of the proximity lead wire reaches a first threshold, and to activate when it is determined that the voltage change value reaches the first threshold.

8. The power supply circuit system according to claim 7, characterized in that, The voltage change detection circuit includes a voltage regulator, a comparator, and a second power supply; The voltage regulator is connected between the first power supply and the proximity lead wire for stabilizing the voltage of the proximity lead wire at the first voltage; The comparator is connected to the proximity lead wire and is connected between the voltage regulator and the charging communication controller; The second power supply is connected to the comparator for continuously applying a first voltage to the comparator; The comparator is further configured to detect and obtain the current second voltage of the proximity lead wire, and to obtain the difference between the first voltage and the second voltage as the voltage change value of the proximity lead wire.

9. The power supply circuit system according to claim 8, characterized in that The second power supply and the first power supply are the same power supply, and both are the power supply batteries in the comparator.

10. A storage medium, characterized in that, It stores an activation program, and when the activation program is executed by a processor, the steps of the activation method according to any one of claims 1 to 6 are implemented.

Images