State detection circuit for voltage converter, voltage converter, electronic apparatus, and vehicle

Abstract

The utility model provides a state detection circuit of a voltage converter, a voltage converter, an electronic device and a vehicle, the voltage converter comprises a first switch tube, when a control end of the first switch tube receives a driving signal, the first switch tube is turned off and the voltage converter is in a normal working state; when the control end of the first switch tube does not receive the driving signal, the first switch tube is conducted and the voltage converter is in an abnormal working state, the detection circuit comprises a detection sub-circuit which is connected with the control end of the first switch tube and is used for outputting different level signals according to whether the driving signal exists at the control end or not; and the processing sub-circuit is connected with the detection sub-circuit and is used for identifying the working state of the voltage converter according to the level signal. According to the utility model, the working state of the voltage converter is detected by detecting whether the driving signal exists at the control end of the first switching tube, and an ADC acquisition port and voltage and threshold comparison do not need to be additionally arranged, so that the design and algorithm cost is saved, and the applicability is stronger.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a state detection circuit of a voltage converter, a voltage converter, an electronic device and a vehicle. Background Art

[0002] In related technologies, an ADC (Analog to Digital Converter) is usually used in a boost module working detection circuit to collect the output signal of the boost module. Although this method is intuitive, it requires the MCU (Microcontroller Unit) to have an ADC acquisition port.

[0003] Another common detection method is to use a bias circuit to compare the boost signal with a preset voltage value. When the boost signal exceeds the preset voltage value, it indicates that the boost module is working abnormally; when the boost signal is within the preset voltage value range, it indicates that the boost module is working normally. However, when the input voltage value is close to the preset voltage value, this method may not be able to accurately judge the working state of the boost module.

[0004] In summary, adding an ADC acquisition port in the MCU to collect the output signal to detect the working state of the boost module will increase the design cost. Or, detecting the working state of the boost module by comparing the boost signal with the preset voltage value will increase the operation cost. In addition, these two methods require configuration of hardware acquisition ports or comparison algorithms and other limiting factors. Therefore, the applicability is not high. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0006] For this reason, an object of the utility model is to provide a state detection circuit of a voltage converter, which detects the working state of the voltage converter by detecting whether there is a driving signal at the control end of the first switching tube, without adding an ADC acquisition port and without comparing the voltage with a threshold value, thereby saving the design cost and the algorithm cost. At the same time, the applicability is stronger.

[0007] For this reason, a second object of the utility model is to provide a voltage converter.

[0008] For this reason, a third object of the utility model is to provide an electronic device.

[0009] For this reason, a fourth object of the utility model is to provide a vehicle.

[0010] To achieve the above object, an embodiment of the first aspect of the present utility model provides a state detection circuit for a voltage converter. The voltage converter includes a first switching transistor. When a driving signal is received at the control terminal of the first switching transistor, the first switching transistor is turned off and the voltage converter is in a normal operating state. When the driving signal is not received at the control terminal of the first switching transistor, the first switching transistor is turned on and the voltage converter is in an abnormal operating state. The state detection circuit includes: a detection sub-circuit connected to the control terminal of the first switching transistor for outputting different level signals according to whether the driving signal exists at the control terminal; and a processing sub-circuit connected to the detection sub-circuit for identifying the operating state of the voltage converter according to the level signals.

[0011] According to the state detection circuit of the voltage converter in the embodiment of the present utility model, the detection sub-circuit is connected to the control terminal of the first switching transistor and the processing sub-circuit. When the detection sub-circuit detects that a driving signal exists at the control terminal, the first switching transistor is in the off state. When the detection sub-circuit does not detect the driving signal at the control terminal, the first switching transistor is in the on state. Thus, according to the detection result of whether the driving signal exists at the control terminal, the operating state of the first switching transistor can be determined and different level signals are output. After receiving these level signals, the processing sub-circuit can identify the operating state of the voltage converter, thereby improving the accuracy and stability of the detection of the operating state of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to perform voltage and threshold comparison, thereby saving the design cost and algorithm cost. At the same time, the applicability is stronger.

[0012] In addition, the state detection circuit of the voltage converter according to the embodiment of the present utility model may further have the following additional technical features:

[0013] In some embodiments, the detection sub-circuit is configured to output a first level signal when it detects that the driving signal exists at the control terminal of the first switching transistor; the detection sub-circuit is configured to output a second level signal when it detects that the driving signal does not exist at the control terminal of the first switching transistor, and the voltages of the first level signal and the second level signal are different.

[0014] In some embodiments, the processing sub-circuit is configured to identify that the voltage converter is in the abnormal operating state when it receives the second level signal; the processing sub-circuit is configured to identify that the voltage converter is in the normal operating state when it receives the first level signal.

[0015] In some embodiments, the processing sub-circuit is further configured to output a first prompt signal indicating that the voltage converter is in the abnormal operating state.

[0016] In some embodiments, the processing sub - circuit is further configured to output a second prompt signal for characterizing that the voltage converter is in the normal operating state.

[0017] In some embodiments, the detection sub - circuit includes: a first signal conversion sub - circuit connected to the control end of the first switching tube, configured to output a third - level signal when the drive signal exists at the control end, and output a fourth - level signal when the drive signal does not exist at the control end; a second signal conversion sub - circuit, the input end of the second signal conversion sub - circuit is connected to the first signal conversion sub - circuit, and the output end of the second signal conversion sub - circuit is connected to the processing sub - circuit, the second signal conversion sub - circuit is configured to output the first - level signal according to the received third - level signal, and output the second - level signal according to the received fourth - level signal.

[0018] In some embodiments, the second signal conversion sub - circuit includes: a second switching tube, the control end of the second switching tube is connected to the first signal conversion sub - circuit, the first end of the second switching tube is connected to the processing sub - circuit, and the third end of the second switching tube is grounded; a power - supply sub - circuit connected to the first end of the second switching tube.

[0019] In some embodiments, the power - supply sub - circuit includes: a power supply and a first resistor; the power supply is connected to the first end of the second switching tube through the first resistor.

[0020] In some embodiments, the second switching tube includes an NMOS (N Metal Oxide Semiconductor) tube, the gate of the NMOS tube is its control end, the drain of the NMOS tube is its first end, and the source of the NMOS tube is its second end.

[0021] In some embodiments, the first signal conversion sub - circuit includes: a low - pass filtering sub - circuit, the input end of the low - pass filtering sub - circuit is connected to the control end of the first switching tube; an amplifying sub - circuit, one end of the amplifying sub - circuit is connected to the output end of the low - pass filtering sub - circuit, and the other end of the amplifying sub - circuit is connected to the input end of the second signal conversion sub - circuit.

[0022] In some embodiments, the low - pass filtering sub - circuit includes: a second resistor and a first capacitor; one end of the second resistor is connected to the control end of the first switching tube, the other end of the second resistor is connected to one end of the first capacitor; the other end of the first capacitor is grounded.

[0023] In some embodiments, the state detection circuit of the voltage converter further includes: a diode; an anode of the diode is connected to the other end of the second resistor, and a cathode of the diode is connected to one end of the first capacitor.

[0024] In some embodiments, the discharging sub - circuit includes: a third resistor and a fourth resistor; one end of the third resistor is connected to one end of the first capacitor, the other end of the third resistor is connected to one end of the fourth resistor; the other end of the fourth resistor is connected to the other end of the first capacitor; a control end of the second switching tube is connected between the third resistor and the fourth resistor.

[0025] In some embodiments, the state detection circuit of the voltage converter further includes: a second capacitor, one end of the second capacitor is respectively connected to a first end of the second switching tube and the processing sub - circuit; the other end of the second capacitor is grounded.

[0026] In some embodiments, the processing sub - circuit includes a microcontroller.

[0027] In some embodiments, the processing sub - circuit is further connected to the voltage converter, and is configured to output a restart signal to the voltage converter when it identifies that the voltage converter is in an abnormal operating state.

[0028] In some embodiments, the voltage converter includes: a DCDC (direct current / direct current converter) converter.

[0029] To achieve the above object, an embodiment of the second aspect of the present invention provides a voltage converter, which is provided with the state detection circuit of the voltage converter as described in any one of the embodiments of the first aspect of the present invention.

[0030] According to the voltage converter of the present invention, the detection sub - circuit is connected to the control end of the first switching tube and the processing sub - circuit. When the detection sub - circuit detects a driving signal at the control end, the first switching tube is in an off state. When the detection sub - circuit does not detect the driving signal at the control end, the first switching tube is in an on state. Thus, according to the detection result of whether there is a driving signal at the control end, the working state of the first switching tube can be determined, and different level signals are output. After receiving these level signals, the processing sub - circuit can identify the working state of the voltage converter, thereby improving the accuracy and stability of the working state detection of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is there a need to compare voltages and thresholds, thus saving design costs and algorithm costs, and at the same time, having stronger applicability.

[0031] To achieve the above object, an embodiment of the third aspect of the present invention provides an electronic device, including the voltage converter as described in the embodiment of the second aspect of the present invention.

[0032] For the electronic device according to the present utility model, the detection sub-circuit is connected to the control end of the first switching tube and the processing sub-circuit. When the detection sub-circuit detects a driving signal at the control end, the first switching tube is in the off state. When the detection sub-circuit does not detect the driving signal at the control end, the first switching tube is in the on state. Thus, according to the detection result of whether there is a driving signal at the control end, the working state of the first switching tube can be determined and different level signals can be output. After receiving these level signals, the processing sub-circuit can identify the working state of the voltage converter, thereby improving the accuracy and stability of the detection of the working state of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to perform voltage and threshold comparison, thus saving design costs and algorithm costs, and at the same time, having stronger applicability.

[0033] To achieve the above object, an embodiment of the fourth aspect of the present utility model provides a vehicle, including the electronic device described in the embodiment of the third aspect of the present utility model.

[0034] For the vehicle according to the embodiment of the present utility model, the detection sub-circuit is connected to the control end of the first switching tube and the processing sub-circuit. When the detection sub-circuit detects a driving signal at the control end, the first switching tube is in the off state. When the detection sub-circuit does not detect the driving signal at the control end, the first switching tube is in the on state. Thus, according to the detection result of whether there is a driving signal at the control end, the working state of the first switching tube can be determined and different level signals can be output. After receiving these level signals, the processing sub-circuit can identify the working state of the voltage converter, thereby improving the accuracy and stability of the detection of the working state of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to perform voltage and threshold comparison, thus saving design costs and algorithm costs, and at the same time, having stronger applicability.

[0035] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0037] Figure 1 is a circuit schematic diagram of a voltage converter according to an embodiment of the present utility model;

[0038] Figure 2 is a schematic diagram of a state detection circuit of a voltage converter according to an embodiment of the present utility model;

[0039] Figure 3It is a structural block diagram of a voltage converter according to an embodiment of the present invention;

[0040] Figure 4 It is a structural block diagram of an electronic device according to an embodiment of the present invention;

[0041] Figure 5 It is a structural block diagram of a vehicle according to an embodiment of the present invention.

[0042] Reference numerals:

[0043] State detection circuit of voltage converter - 100;

[0044] Detection sub - circuit - 110; First signal conversion sub - circuit - 111; Second signal conversion sub - circuit - 112;

[0045] Low - pass filter sub - circuit - 1111; Amplification sub - circuit - 1112; Power supply sub - circuit - 1121;

[0046] Processing sub - circuit - 120;

[0047] Power supply - V; First switching transistor - Q1; Second switching transistor - Q2; First resistor - R1; Second resistor - R2; Third resistor - R3; Fourth resistor - R4; Diode - D1; First capacitor - C1; Second capacitor - C2; Inductor - L; Input voltage - Vin; Output voltage - Vout; Input capacitor - Cin; Output capacitor - Cout; First diode - D; Comparator - A; Control terminal - GATE, Controller - 130;

[0048] Voltage converter - 200;

[0049] Electronic device - 300;

[0050] Vehicle - 400. Detailed implementation manners

[0051] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0052] The following combines Figure 1 and Figure 2 to describe the state detection circuit of the voltage converter according to the embodiments of the present invention.

[0053] Figure 2 It is a schematic diagram of the state detection circuit of the voltage converter according to the embodiments of the present invention. As Figure 2 shown, the state detection circuit 100 of the voltage converter of the present invention mainly includes: a detection sub - circuit 110 and a processing sub - circuit 120.

[0054] Among them, asFigure 1 As shown, the voltage converter includes a first switching transistor Q1. When the control terminal GATE of the first switching transistor Q1 receives a driving signal, the first switching transistor Q1 turns off and the voltage converter is in a normal operating state. When the control terminal GATE of the first switching transistor Q1 does not receive a driving signal, the first switching transistor Q1 turns on and the voltage converter is in an abnormal operating state.

[0055] In an embodiment, the operating state of the first switching transistor Q1 is driven by a driving signal, that is, the on or off state of the first switching transistor Q1 is controlled according to the driving signal to realize the charging and discharging of the inductor L, and a boost is achieved when the inductor L and the input voltage Vin discharge simultaneously.

[0056] Specifically, when the control terminal GATE of the first switching transistor Q1 receives a driving signal, the first switching transistor Q1 is in an off state, and the voltage converter is in a normal operating state. At this time, the output voltage Vout is higher than the input voltage Vin, and thus a boost can be achieved.

[0057] When the control terminal GATE of the first switching transistor Q1 does not receive a driving signal, the first switching transistor Q1 is in an on state. The voltage converter may not be able to operate in a normal boost mode, and the output voltage Vout may decrease, unable to meet the condition that the output voltage Vout is higher than the input voltage Vin, that is, the boost fails. Therefore, the voltage converter is in an abnormal operating state when the first switching transistor Q1 is on.

[0058] As Figure 2 shown, the state detection circuit 100 of the voltage converter includes: a detection sub-circuit 110 and a processing sub-circuit 120. Among them, the detection sub-circuit 110 is connected to the control terminal GATE of the first switching transistor Q1 and is used to output different level signals according to whether there is a driving signal at the control terminal GATE; the processing sub-circuit 120 is connected to the detection sub-circuit 110 and is used to identify the operating state of the voltage converter according to the level signal.

[0059] In an embodiment, the detection sub-circuit 110 is connected to the control terminal GATE of the first switching transistor Q1, and can detect the level signal of the control terminal GATE of the first switching transistor Q1 to determine whether there is a driving signal at the control terminal GATE, so as to output different level signals according to whether there is a driving signal at the control terminal GATE.

[0060] The processing sub-circuit 120 is connected to the detection sub-circuit 110, can receive the level signal output by the detection sub-circuit 110, and identify the operating state of the voltage converter based on the received level signal, that is, identify whether the voltage converter is in a normal operating state or an abnormal operating state according to the different level signals output by the detection sub-circuit 110.

[0061] Thus, in the above-mentioned state detection circuit 100 of the voltage converter, the detection sub-circuit 110 is connected to the control terminal GATE of the first switching transistor Q1 and the processing sub-circuit 120. When the detection sub-circuit 110 detects a driving signal at the control terminal GATE, the first switching transistor Q1 is in the off state. When the detection sub-circuit 110 does not detect the driving signal at the control terminal GATE, the first switching transistor Q1 is in the on state. Thus, according to the detection result of whether there is a driving signal at the control terminal GATE, the working state of the first switching transistor Q1 can be determined, and different level signals are output. After receiving these level signals, the processing sub-circuit 120 can identify the working state of the voltage converter, thereby improving the accuracy and stability of the working state detection of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to compare voltages and thresholds, thus saving design costs and algorithm costs. At the same time, the applicability is stronger.

[0062] In an embodiment of the present invention, the detection sub-circuit 110 is configured to output a first level signal correspondingly when detecting a driving signal at the control terminal GATE of the first switching transistor Q1; the detection sub-circuit 110 is configured to output a second level signal correspondingly when detecting that there is no driving signal at the control terminal GATE of the first switching transistor Q1, and the voltages of the first level signal and the second level signal are different.

[0063] In the embodiment, the detection sub-circuit 110 can detect the state of the control terminal GATE of the first switching transistor Q1 in real time. When detecting a driving signal at the control terminal GATE of the first switching transistor Q1, it means that the first switching transistor Q1 is about to be driven or is being driven to conduct. At this time, the detection sub-circuit 110 will output a first level signal, for example, a low level signal, so that the processing sub-circuit 120 can identify the working state of the voltage converter according to the output low level signal.

[0064] When detecting that there is no driving signal at the control terminal GATE of the first switching transistor Q1, it means that the first switching transistor Q1 is currently in the off state or about to be turned off. At this time, the detection sub-circuit 110 will output a second level signal, for example, a high level signal, so that the processing sub-circuit 120 can identify the working state of the voltage converter according to the output high level signal.

[0065] In an embodiment of the present invention, the processing sub-circuit 120 is configured to identify that the voltage converter is in an abnormal working state when receiving the second level signal; the processing sub-circuit 120 is configured to identify that the voltage converter is in a normal working state when receiving the first level signal.

[0066] In an embodiment, when the processing sub-circuit 120 receives the second-level signal output from the detection sub-circuit 110, that is, the high-level signal, it will process the received high-level signal, that is, identify the working state of the voltage converter according to the received high-level signal. Among them, the high-level signal can indicate that the control terminal GATE of the first switching transistor Q1 does not receive a driving signal, but at this time the first switching transistor Q1 is in the conducting state. Therefore, the processing sub-circuit 120 identifies that the voltage converter is in an abnormal working state.

[0067] Similarly, when the processing sub-circuit 120 receives the first-level signal output from the detection sub-circuit 110, that is, the low-level signal, it will process the received low-level signal, that is, identify the working state of the voltage converter according to the received low-level signal. Among them, the low-level signal can indicate that the control terminal GATE of the first switch Q1 receives a driving signal, and at this time the first switching transistor Q1 is in the off state. Therefore, the processing sub-circuit 120 identifies that the voltage converter is in a normal working state.

[0068] In an embodiment of the present invention, the processing sub-circuit 120 is further configured to output a first prompt signal for characterizing that the voltage converter is in an abnormal working state.

[0069] In an embodiment, when the processing sub-circuit 120 receives the second-level signal, it will output a first prompt signal according to the second-level signal to indicate that the voltage converter is in an abnormal working state, so as to accurately identify the working state of the voltage converter according to the prompt signal output by the processing sub-circuit 120, and improve the accuracy and reliability of the voltage converter state detection.

[0070] In an embodiment of the present invention, the processing sub-circuit 120 is further configured to output a second prompt signal for characterizing that the voltage converter is in a normal working state.

[0071] In an embodiment, when the processing sub-circuit 120 receives the first-level signal, it will output a second prompt signal according to the first-level signal to indicate that the voltage converter is in a normal working state, so as to accurately identify the working state of the voltage converter according to the prompt signal output by the processing sub-circuit 120, and improve the accuracy and reliability of the voltage converter state detection.

[0072] In an embodiment of the present invention, such as Figure 2As shown, the detection sub-circuit 110 includes: a first signal conversion sub-circuit 111 and a second signal conversion sub-circuit 112. Among them, the first signal conversion sub-circuit 111 is connected to the control terminal GATE of the first switching transistor Q1, and is configured to output a third-level signal when there is a driving signal at the control terminal GATE, and output a fourth-level signal when there is no driving signal at the control terminal GATE; the input terminal of the second signal conversion sub-circuit 112 is connected to the first signal conversion sub-circuit 111, and the output terminal of the second signal conversion sub-circuit 112 is connected to the processing sub-circuit 120. The second signal conversion sub-circuit 112 is configured to output a first-level signal according to the received third-level signal, and output a second-level signal according to the received fourth-level signal.

[0073] In an embodiment, as Figure 2 shown, the detection sub-circuit 110 mainly consists of a first signal conversion sub-circuit 111 and a second signal conversion sub-circuit 112. The first signal conversion sub-circuit 111 is connected to the control terminal GATE of the first switching transistor Q1 to output different level signals according to whether there is a driving signal at the control terminal GATE of the first switching transistor Q1.

[0074] When there is a driving signal at the output terminal GATE of the first switching transistor Q1, the first signal conversion sub-circuit 111 outputs a third-level signal. The third-level signal is, for example, a high-level signal. If it is detected that there is no driving signal at the control terminal GATE of the first switching transistor Q1, the first signal conversion sub-circuit 111 outputs a fourth-level signal. The fourth-level signal is, for example, a low-level signal.

[0075] Since the input terminal of the second signal conversion sub-circuit 112 is connected to the first signal conversion sub-circuit 111, the third-level signal or the fourth-level signal output by the first signal conversion sub-circuit 111 will be input to the second signal conversion sub-circuit 112. After the second signal conversion sub-circuit 112 receives the third-level signal or the fourth-level signal, it is input to the processing sub-circuit 120 through its output terminal. When the processing sub-circuit 120 receives the third-level signal, it outputs a first-level signal, that is, the processing sub-circuit 120 converts the received high-level signal into a low-level signal for output; when the processing sub-circuit receives the fourth-level signal, it outputs a second-level signal, that is, the processing sub-circuit 120 converts the received low-level signal into a high-level signal for output. In this way, the processing sub-circuit 120 can accurately identify the working state of the voltage converter according to these signals, thereby improving the accuracy and reliability of the voltage converter state detection.

[0076] In an embodiment of the present utility model, as Figure 2As shown, the second signal conversion sub-circuit 112 includes: a second switching transistor Q2 and a power supply sub-circuit 1121. The control terminal of the second switching transistor Q2 is connected to the first signal conversion sub-circuit 111. The first terminal of the second switching transistor Q2 is connected to the processing sub-circuit 120. The third terminal of the second switching transistor Q2 is grounded; the power supply sub-circuit 1121 is connected to the first terminal of the second switching transistor Q2.

[0077] In an embodiment, as Figure 2 shown, the control terminal of the second switching transistor Q2 is connected to the first signal conversion sub-circuit 111, for receiving the level signal output by the first signal conversion sub-circuit 111, and inputting the received level signal to the processing sub-circuit 120 through the first terminal of the second switching transistor Q2, so that the first signal conversion sub-circuit 111 forms a path with the processing sub-circuit 120 through the second switching transistor Q2, realizing the transmission of the level signal.

[0078] The third terminal of the second switching transistor Q2 is grounded. When the second switching transistor Q2 is turned off, the connection between the first terminal and the third terminal of the second switching transistor Q2 is disconnected, and no path is formed.

[0079] The first terminal of the second switching transistor Q2 is also connected to the power supply sub-circuit 1121. The power supply sub-circuit 1121 can provide the electric energy required for the operation of the second switching transistor Q2, ensuring that when the second switching transistor Q2 is in the conducting state, stable electric energy can be provided for the processing sub-circuit 120.

[0080] In an embodiment of the present invention, as Figure 2 shown, the power supply sub-circuit 1121 includes: a power supply V and a first resistor R1; the power supply V is connected to the first terminal of the second switching transistor Q2 through the first resistor R1.

[0081] In an embodiment, as Figure 2 shown, the power supply sub-circuit 1121 mainly includes a power supply V and a first resistor R1. The power supply V is connected to the first terminal of the second switching transistor Q2 through the first resistor R1. Among them, the power supply V can be understood as a boosting power supply, and the first resistor R1 can be understood as a boosting resistor.

[0082] Specifically, as Figure 2 shown, the first resistor R1 is connected in series with the power supply V and the first terminal of the second switching transistor Q2. When the second switching transistor Q2 is in the off state, the power supply V provides current to the first terminal of the second switching transistor Q2 through the first resistor R1, so as to gradually raise the level of the first terminal of the second switching transistor Q2 through the first resistor R1, so that the first terminal of the second switching transistor Q2 can be maintained at a relatively high level state.

[0083] In an embodiment of the present utility model, the second switching transistor Q2 includes an NMOS transistor. The gate of the NMOS transistor is its control terminal, the drain of the NMOS transistor is its first terminal, and the source of the NMOS transistor is its second terminal.

[0084] In the embodiment, the second switching transistor Q2 can be an NMOS transistor. In the NMOS transistor, its gate serves as the control terminal, and the control terminal is used to receive the level signal from the first signal conversion sub-circuit 111 to control the operating state of the NMOS transistor according to the received level signal, such as the on state or the off state.

[0085] The drain of the NMOS transistor is its first terminal, which is connected to the processing sub-circuit 120 to provide a level signal for the processing sub-circuit 120 through the drain of the NMOS transistor. The source of the NMOS transistor serves as its second terminal and is usually connected to the ground as the return path of the current.

[0086] Specifically, when the gate of the NMOS transistor receives a high-level signal, the NMOS transistor enters the on state and forms an impedance channel between the drain and the source. Due to the on characteristic of the NMOS transistor, the potential of the drain is pulled down, so the drain outputs a low-level signal.

[0087] On the contrary, when the gate of the NMOS transistor receives a low-level signal, the NMOS transistor is in the off state, and the current path between the drain and the source is blocked. Since the level of the drain is determined by the external circuit, that is, the level of the drain is determined by the power supply sub-circuit 1121. In this case, the drain is usually connected to the power supply V through the first resistor R1 in the power supply sub-circuit 1121, and the level of the drain is pulled up through the power supply sub-circuit 1121, so the drain outputs a high-level signal.

[0088] Therefore, by utilizing the characteristics of the NMOS transistor, the output level of the drain can be controlled by adjusting the level signal of the gate, thereby realizing a stable detection function. At the same time, the number of NMOS transistors used is also reduced accordingly, achieving the purpose of cost savings.

[0089] In an embodiment of the present utility model, as Figure 2 shown, the first signal conversion sub-circuit 111 includes: a low-pass filter sub-circuit 1111 and an amplification sub-circuit 1112. Among them, the input end of the low-pass filter sub-circuit 1111 is connected to the control terminal GATE of the first switching transistor Q1; one end of the amplification sub-circuit 1112 is connected to the output end of the low-pass filter sub-circuit 1111, and the other end of the amplification sub-circuit 1112 is connected to the input end of the second signal conversion sub-circuit 112.

[0090] In the embodiment, as Figure 2As shown in the figure, the first signal conversion sub-circuit 111 is mainly composed of a low-pass filter sub-circuit 1111 and an amplification sub-circuit 1112. The input end of the low-pass filter sub-circuit 1111 is connected to the control end GATE of the first switching transistor Q1. When a driving signal is detected at the control end GATE, for example, a PWM signal, the PWM signal at the control end GATE is input into the low-pass filter sub-circuit 1111. Among them, the PWM signal contains certain square wave signals. The low-pass filter sub-circuit 1111 can filter out the high-frequency components of the PWM signal, thereby outputting a relatively smooth DC regulated signal. That is, when the first signal conversion sub-circuit 111 detects the driving signal at the control end GATE, the output third-level signal is a DC regulated signal, that is, a stable high-level signal.

[0091] One end of the amplification sub-circuit 1112 is connected to the output end of the low-pass filter sub-circuit 1111, and the other end of the amplification sub-circuit 1112 is connected to the input end of the second signal conversion sub-circuit 112. When it is detected that there is no driving signal at the control end GATE, the charge accumulated in the low-pass filter sub-circuit 1111 is released through the amplification sub-circuit 112, ensuring that the output end of the low-pass filter sub-circuit 1111 outputs a stable low-level signal, that is, the fourth-level signal, and providing a stable signal input for the input end of the second signal conversion sub-circuit 112.

[0092] In an embodiment of the present invention, as Figure 2 shown, the low-pass filter sub-circuit 1111 includes: a second resistor R2 and a first capacitor C1; one end of the second resistor R2 is connected to the control end GATE of the first switching transistor Q1, and the other end of the second resistor R2 is connected to one end of the first capacitor C1; the other end of the first capacitor C1 is grounded.

[0093] In the embodiment, as Figure 2 shown, one end of the second resistor R2 is connected to the control end GATE of the first switching transistor Q1. When there is a driving signal at the control end GATE of the first switching transistor Q1, the driving signal first passes through the second resistor R2, and the second resistor R2 can play a role in limiting current and voltage.

[0094] Since one end of the first capacitor C1 is connected to the other end of the second resistor R2 and the other end of the first capacitor C1 is grounded, when the driving signal of the first switching transistor Q1 enters the first capacitor C1 through the second resistor R2, the impedance of the first capacitor C1 to high-frequency signals is low, and the high-frequency components existing in the driving signal can flow to the ground through the other end of the first capacitor C1, thereby being filtered out.

[0095] In an embodiment of the present invention, as Figure 2As shown, the low-pass filter sub-circuit 1111 further includes: a diode D1; the anode of the diode D1 is connected to the other end of the second resistor R2, and the cathode of the diode D1 is connected to one end of the first capacitor C1.

[0096] In an embodiment, as Figure 2 shown, the anode of the diode D1 is connected to the other end of the second capacitor R2, and the cathode of the diode D1 is connected to one end of the first capacitor C1. Such a connection forms a one-way conductive path that allows the current in the circuit to flow from the second resistor R2 to the first capacitor C1 and prevents the current from flowing back from the first capacitor C1 into the second resistor R2.

[0097] For example, when there is no drive signal at the control terminal GATE of the first switching transistor Q1, charges may accumulate on the first capacitor C1. If the diode D1 is not connected between the second resistor R2 and the first capacitor C1, the charges accumulated on the first capacitor C1 may flow back into the control terminal GATE through the second resistor R2, which may damage the circuit. Connecting the diode D1 between the second resistor R2 and the first capacitor C1 can avoid this situation.

[0098] Specifically, when the voltage of the first capacitor C1 is higher than the voltage between the cathode of the diode D1 and the ground, the diode D1 is in the conducting state. At this time, the charges on the first capacitor C1 can flow to the ground through the diode D1, thereby releasing these charges and not flowing back into the second resistor R2.

[0099] By preventing the reverse charging of the first capacitor C1, the diode D1 can prevent the abnormal output of the control terminal GATE of the first switching transistor Q1. At the same time, it enhances the stability of the entire low-pass filter sub-circuit 1111, ensuring that when the drive signal changes, the first capacitor C1 can charge and discharge smoothly, thereby providing a more stable and accurate filtering effect.

[0100] In an embodiment of the present invention, as Figure 2 shown, the discharging sub-circuit 1112 includes: a third resistor R3 and a fourth resistor R4; one end of the third resistor R3 is connected to one end of the first capacitor C1, the other end of the third resistor R3 is connected to one end of the fourth resistor R4; the other end of the fourth resistor R4 is connected to the other end of the first capacitor C1; the control terminal of the second switching transistor Q2 is connected between the third resistor R3 and the fourth resistor R4.

[0101] In an embodiment, as Figure 2As shown, the electron discharging circuit 1112 mainly consists of a third resistor R3 and a fourth resistor R4. One end of the third resistor R3 is connected to one end of the first capacitor C1, the other end of the third resistor R3 is connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is connected to the other end of the first capacitor C1, thus forming a closed loop.

[0102] When charges accumulate on the first capacitor C1, a voltage will be formed between the third resistor R3 and the fourth resistor R4. This voltage is a proportional value of the voltage across the first capacitor C1 and depends on the resistance values of the third resistor R3 and the fourth resistor R4. The control terminal of the second switching transistor Q2 is connected between the third resistor R3 and the fourth resistor R4. Then, the operating state of the second switching transistor Q2 may be affected by the voltage division between the third resistor R3 and the fourth resistor R4, and the third resistor R3 and the fourth resistor R4 can play the roles of current limiting and voltage division.

[0103] Specifically, when charges accumulate on the first capacitor C1 and the second switching transistor Q2 is in the conducting state under the influence of the voltage division between the third resistor R3 and the fourth resistor R4, a discharging path will be provided for the first capacitor C1, enabling the charges on the first capacitor C1 to discharge through the path of the second switching transistor Q2, ensuring the stability and safety of the circuit.

[0104] On the other hand, the discharging time of the electron discharging circuit 1112 depends on the capacitance value of the low-pass filtering sub-circuit 1111 and the total resistance value of the electron discharging circuit 1112. Among them, the capacitance value of the low-pass filtering sub-circuit 1111 refers to the value of the first capacitor C1, and the total resistance value of the electron discharging circuit 1112 refers to the sum of the resistance values of the third resistor R3 and the fourth resistor R4. For example, if the discharging time is denoted as t, then t = RC, where R represents the sum of the resistance values of the third resistor R3 and the fourth resistor R4, and the discharging time t should exceed the period of the driving signal, which is denoted as T. The period of this driving signal refers to the time interval from the start of one high-level signal to the start of the next high-level signal. Then, t > T. For example, if the minimum frequency of the driving signal is 150 HZ, then the period T of the driving signal = 1 / 150 s, approximately 6.67 ms. To ensure that the first capacitor C1 has enough time to discharge, a more appropriate discharging time can be selected, such as 10 ms. According to the calculation formula of the discharging time t, it can be calculated that the capacitance value of the first capacitor C1 should exceed 0.2 uF.

[0105] In an embodiment of the present utility model, as Figure 2 shown, the state detection circuit 100 of the voltage converter further includes: a second capacitor C2. One end of the second capacitor C2 is respectively connected to the first end of the second switching transistor Q2 and the processing sub-circuit 120; the other end of the second capacitor C2 is grounded.

[0106] In the embodiment, as Figure 2As shown, one end of the second capacitor C2 is connected to the first end of the second switching transistor Q2 and the processing sub-circuit 120 respectively, and the other end of the second capacitor C2 is grounded. Through this connection method, the second capacitor C2 can store or release charges to solve the voltage fluctuation problem in the circuit.

[0107] Specifically, when the second switching transistor Q2 is in the on or off state, due to the current change in the circuit, voltage fluctuations may be generated at the first end of the second switching transistor Q2. These voltage fluctuations may affect the normal operation of the processing sub-circuit 120. Adding the second capacitor C2 in the state detection circuit 100 of the voltage converter can smooth these voltage fluctuations through the charging and discharging process of the second capacitor C2, improving the stability of the voltage converter state detection.

[0108] In an embodiment of the present invention, the processing sub-circuit 120 includes a microcontroller.

[0109] In the embodiment, as the core component of the processing sub-circuit 120, the microcontroller can receive the level signals output by the detection sub-circuit 110, and the microcontroller determines the working state of the voltage converter according to the high and low levels of these level signals.

[0110] In an embodiment of the present invention, as Figure 1 shown, the voltage converter further includes a controller 130. The controller 130 is used to drive the on and off of the first switching transistor Q1, that is, to output a driving signal or not output a driving signal to the first switching transistor Q1.

[0111] Specifically, the controller 130 can be configured as a microcontroller. The microcontroller can control the on and off of the first switching transistor Q1 through the duty cycle. The duty cycle refers to the proportion of the on time of the switching transistor in a complete signal cycle. By adjusting the duty cycle, the microcontroller can precisely control the on and off time of the first switching transistor Q1. It should be noted that in a specific embodiment, the microcontroller corresponding to the controller 130 and the microcontroller configured in the processing sub-circuit 120 can be the same or different.

[0112] Combined with Figure 1 and Figure 2As shown, when the voltage converter is operating, the controller 130 generates a drive signal and outputs it to the control terminal GATE of the first switching transistor Q1. When the detection sub-circuit 110 detects a drive signal at the control terminal GATE, it outputs a first level signal, i.e., a low level signal, and at this time, the first switching transistor Q1 is turned off. When the detection sub-circuit 110 does not detect the drive signal at the control terminal GATE, it outputs a second level signal, i.e., a high level signal, and at this time, the first switching transistor Q1 is turned on. Thus, by adjusting the duty cycle of the drive signal, the time ratio of the conduction and turn-off of the first switching transistor Q1 can be changed, and further, the control of the detection circuit can be achieved.

[0113] In an embodiment of the present invention, the processing sub-circuit 120 is also connected to the voltage converter and is used to output a restart signal to the voltage converter when it identifies that the voltage converter is in an abnormal operating state.

[0114] In the embodiment, the processing sub-circuit 120 is connected to the voltage converter, and the identification and processing of the operating state of the voltage converter can be realized. When the processing sub-circuit 120 identifies that the voltage converter is in an abnormal operating state, it can output a restart signal to the voltage converter, so that the voltage converter performs a restart operation according to the restart signal, preventing the voltage converter from being damaged during abnormal operation, thereby improving the reliability and stability of the detection circuit.

[0115] In an embodiment of the present invention, the voltage converter includes: a DCDC converter. More specifically, the DCDC converter includes a boost converter.

[0116] In the embodiment, the DCDC converter can convert a DC voltage or current into a high-frequency square-wave voltage or current, which is rectified and smoothed into a DC voltage output to achieve voltage conversion according to requirements.

[0117] The boost converter can boost a low voltage to a required high voltage, and realizes voltage conversion by controlling the conduction or turn-off of the switching transistor and the charge and discharge processes of the inductor and capacitor.

[0118] As a specific embodiment, as Figure 1 shown, the voltage converter further includes an inductor L, an input capacitor Cin, an output capacitor Vout, a first diode D, a comparator A, and required resistors (such as Figure 1 Ra and Rb shown). Through such a circuit connection, the purpose of raising the input voltage Vin to the output voltage Vout can be achieved.

[0119] As Figure 1Schematic diagram of the circuit of the voltage converter shown. When a drive signal is detected, the drive signal drives the first switching transistor Q1 to conduct through the control terminal GATE of the first switching transistor Q1. The input voltage Vin forms a loop through the inductor L and the conducting first switching transistor Q1. At this time, the inductor L starts to charge and store energy. When the drive signal does not exist, the first switching transistor Q1 is in the off state. Since the current in the inductor L cannot change suddenly, a reverse electromotive force will be generated. This electromotive force is superimposed on the input voltage Vin and together charges the output capacitor Cout through the first diode D, forming a loop composed of the input voltage Vin, the inductor L, the output capacitor Cout, and the output voltage Vout. Due to the energy storage effect of the inductor L and the superimposition effect with the input voltage Vin, the output voltage Vout can be higher than the input voltage Vin, thus realizing the boost function.

[0120] Among them, the input capacitor Cin and the output capacitor Cout can filter the input voltage Vin and the output voltage Vout, reduce voltage fluctuations, and improve the stability during the boost process. The resistors Ra and Rb have a voltage dividing function and are connected between the output voltage Vout and the ground. One end of the comparator A is connected between the resistors Ra and Rb. By adjusting the resistors Ra and Rb, the voltage at one end (i.e., the - end) of the comparator A can be controlled, and this voltage is used as the input voltage of the comparator A to ensure that the input voltage of the comparator A is within a reasonable range, thereby improving the stability of the voltage converter.

[0121] According to the state detection circuit 100 of the voltage converter according to an embodiment of the present invention, the detection sub - circuit 110 is connected to the control terminal GATE of the first switching transistor Q1 and the processing sub - circuit 120. When the detection sub - circuit 110 detects a drive signal at the control terminal GATE, the first switching transistor Q1 is in the off state. When the detection sub - circuit 110 does not detect the drive signal at the control terminal GATE, the first switching transistor Q1 is in the on state. Thus, according to the detection result of whether there is a drive signal at the control terminal GATE, the working state of the first switching transistor Q1 can be determined, and different level signals are output. After receiving these level signals, the processing sub - circuit 120 can identify the working state of the voltage converter, thereby improving the accuracy and stability of the detection of the working state of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to perform voltage and threshold comparison, thus saving the design cost and algorithm cost. At the same time, it has stronger applicability.

[0122] The following refers to Figure 3 Describe the voltage converter 200 according to an embodiment of the present invention.

[0123] Figure 3 It is a structural block diagram of a voltage converter according to an embodiment of the present invention. As Figure 3As shown, the voltage converter 200 of the present utility model is provided with the state detection circuit 100 of the voltage converter described in any of the above embodiments of the present utility model.

[0124] According to the voltage converter 200 of the present utility model, the detection sub-circuit 110 is connected to the control terminal GATE of the first switching transistor Q1 and the processing sub-circuit 120. When the detection sub-circuit 110 detects a driving signal at the control terminal GATE, the first switching transistor Q1 is in the off state. When the detection sub-circuit 110 does not detect the driving signal at the control terminal GATE, the first switching transistor Q1 is in the on state. Thus, according to the detection result of whether there is a driving signal at the control terminal GATE, the working state of the first switching transistor Q1 can be determined, and different level signals are output. After receiving these level signals, the processing sub-circuit 120 can identify the working state of the voltage converter, thereby improving the accuracy and stability of the working state detection of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to compare voltages and thresholds, thereby saving design costs and algorithm costs, and at the same time, it has stronger applicability.

[0125] Next, refer to Figure 4 to describe the electronic device 300 according to an embodiment of the present utility model.

[0126] Figure 4 is a structural block diagram of an electronic device according to an embodiment of the present utility model. As Figure 4 shown, the electronic device 300 of the present utility model includes the voltage converter 200 described in the above embodiments of the present utility model.

[0127] According to the electronic device 300 of the present utility model, the detection sub-circuit 110 is connected to the control terminal GATE of the first switching transistor Q1 and the processing sub-circuit 120. When the detection sub-circuit 110 detects a driving signal at the control terminal GATE, the first switching transistor Q1 is in the off state. When the detection sub-circuit 110 does not detect the driving signal at the control terminal GATE, the first switching transistor Q1 is in the on state. Thus, according to the detection result of whether there is a driving signal at the control terminal GATE, the working state of the first switching transistor Q1 can be determined, and different level signals are output. After receiving these level signals, the processing sub-circuit 120 can identify the working state of the voltage converter, thereby improving the accuracy and stability of the working state detection of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to compare voltages and thresholds, thereby saving design costs and algorithm costs, and at the same time, it has stronger applicability.

[0128] Next, refer to Figure 5 to describe the vehicle 400 according to an embodiment of the present utility model.

[0129] Figure 5is a structural block diagram of a vehicle according to an embodiment of the present invention. As Figure 5 shown, the vehicle 400 of the present invention includes the electronic device 300 described in the above embodiments of the present invention.

[0130] For the vehicle 400 according to the present invention, the detection sub-circuit 110 is connected to the control terminal GATE of the first switching transistor Q1 and the processing sub-circuit 120. When the detection sub-circuit 110 detects a driving signal at the control terminal GATE, the first switching transistor Q1 is in the off state. When the detection sub-circuit 110 does not detect the driving signal at the control terminal GATE, the first switching transistor Q1 is in the on state. Thus, according to the detection result of whether there is a driving signal at the control terminal GATE, the working state of the first switching transistor Q1 can be determined and different level signals can be output. After receiving these level signals, the processing sub-circuit 120 can identify the working state of the voltage converter, thereby improving the accuracy and stability of the detection of the working state of the voltage converter. In addition, during the detection process, there is no need to add an ADC acquisition port, nor is it necessary to compare voltages and thresholds, thereby saving design costs and algorithm costs. At the same time, the applicability is stronger.

[0131] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0132] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A state detection circuit of a voltage converter, characterized in that: The voltage converter includes a first switch tube. When the control end of the first switch tube receives a driving signal, the first switch tube is turned off and the voltage converter is in a normal working state. When the control end of the first switch tube does not receive the driving signal, the first switch tube is turned on and the voltage converter is in an abnormal working state. The state detection circuit includes: A detection subcircuit, connected to the control end of the first switch tube, and configured to output different level signals according to whether the drive signal exists at the control end; The processing subcircuit is connected to the detection subcircuit and is used to identify the working state of the voltage converter according to the level signal.

2. The state detection circuit of the voltage converter according to claim 1, characterized in that: The detection subcircuit is used for outputting a first level signal accordingly when detecting that the control end of the first switch tube has the driving signal; The detection subcircuit is used for outputting a second level signal correspondingly when it is detected that the control end of the first switch tube does not have the driving signal, and the voltages of the first level signal and the second level signal are different.

3. The state detection circuit of the voltage converter according to claim 2, characterized in that: When the processing sub-circuit receives the second level signal, it identifies that the voltage converter is in the abnormal working state; When the processing sub-circuit receives the first level signal, it identifies that the voltage converter is in the normal working state.

4. The state detection circuit of the voltage converter according to claim 3, characterized in that: The processing subcircuit is further configured to output a first prompt signal for indicating that the voltage converter is in the abnormal working state.

5. The state detection circuit of the voltage converter according to claim 3, characterized in that: The processing subcircuit is further configured to output a second prompt signal for indicating that the voltage converter is in the normal working state.

6. The state detection circuit of the voltage converter according to claim 2, characterized in that: The detection subcircuit comprises: a first signal conversion subcircuit, the first signal conversion subcircuit being connected to the control end of the first switch tube and configured to output a third level signal when the drive signal is present at the control end, and to output a fourth level signal when the drive signal is not present at the control end; a second signal conversion sub-circuit, wherein the input end of the second signal conversion sub-circuit is connected to the first signal conversion sub-circuit, the output end of the second signal conversion sub-circuit is connected to the processing sub-circuit, and the second signal conversion sub-circuit is used to output the first level signal according to the received third level signal, and to output the second level signal according to the received fourth level signal.

7. The state detection circuit of the voltage converter according to claim 6, characterized in that: The second signal conversion sub-circuit comprises: a second switch tube, wherein a control end of the second switch tube is connected to the first signal conversion sub-circuit, a first end of the second switch tube is connected to the processing sub-circuit, and a third end of the second switch tube is grounded; A power supply sub-circuit is connected to the first end of the second switch tube.

8. The state detection circuit of the voltage converter according to claim 7, characterized in that: The power supply subcircuit comprises: a power supply and a first resistor; The power source is connected to the first end of the second switch tube through the first resistor.

9. The state detection circuit of the voltage converter according to claim 7, characterized in that: The second switch tube comprises an NMOS tube, the gate of the NMOS tube is the control terminal, the drain of the NMOS tube is the first terminal, and the source of the NMOS tube is the second terminal.

10. The state detection circuit of the voltage converter according to claim 7, characterized in that: The first signal conversion subcircuit comprises: A low-pass filter sub-circuit, wherein the input end of the low-pass filter sub-circuit is connected to the control end of the first switch tube; A discharge subcircuit, one end of which is connected to the output end of the low-pass filtering subcircuit, and the other end of which is connected to the input end of the second signal conversion subcircuit.

11. The state detection circuit of the voltage converter according to claim 10, characterized in that: The low-pass filter subcircuit comprises: a second resistor and a first capacitor; One end of the second resistor is connected to the control end of the first switch tube, and the other end of the second resistor is connected to one end of the first capacitor; The other end of the first capacitor is grounded.

12. The state detection circuit of the voltage converter according to claim 11, characterized in that: Also includes: diode; An anode of the diode is connected to the other end of the second resistor, and a cathode of the diode is connected to one end of the first capacitor.

13. The state detection circuit of the voltage converter according to claim 11, characterized in that: The discharge subcircuit comprises: a third resistor and a fourth resistor; One end of the third resistor is connected to one end of the first capacitor, and the other end of the third resistor is connected to one end of the fourth resistor; The other end of the fourth resistor is connected to the other end of the first capacitor; The control end of the second switch tube is connected between the third resistor and the fourth resistor.

14. The state detection circuit of the voltage converter according to claim 7, characterized in that: Also includes: A second capacitor, one end of which is connected to the first end of the second switch tube and the processing sub-circuit respectively; The other end of the second capacitor is grounded.

15. The state detection circuit of the voltage converter according to claim 1, characterized in that: The processing subcircuit includes a microcontroller.

16. The state detection circuit of the voltage converter according to claim 3, characterized in that: The processing subcircuit is also connected to the voltage converter, and is used to output a restart signal to the voltage converter when it is identified that the voltage converter is in an abnormal working state.

17. The state detection circuit of the voltage converter according to claim 1, characterized in that: The voltage converter includes a DCDC converter.

18. A voltage converter, characterized in that: A state detection circuit of the voltage converter according to any one of claims 1 to 17 is provided.

19. An electronic device, characterized in that: include: A voltage converter as claimed in claim 18.

20. A vehicle, characterized in that: Comprising the electronic device as claimed in claim 19.

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