Control method of detection system, detection system, electronic device, vehicle and computer program product

Abstract

The invention discloses a control method of a detection system, the detection system, an electronic device, a vehicle and a computer program product. Relates to the technical field of charging detection, and the control method comprises the steps: determining the types of thermistors configured in a charging gun according to the environment temperature, the resistance value of a detection circuit and a preset collection voltage range, and enabling the types of the thermistors to be in one-to-one correspondence with detection branches; determining the resistance value of the thermistor according to the type of the thermistor and the detection shunt; and controlling a charging gun to operate according to the type of the thermistor and the resistance value of the thermistor. According to the invention, temperature acquisition can be carried out on various types of charging guns, and the compatibility is high.

Description

Technical Field

[0001] The present application relates to the field of charging detection technology, and more specifically, to a control method for a detection system, a detection system, an electronic device, a vehicle, and a computer program product. Background Art

[0002] During the charging process of an electric vehicle, the vehicle controller needs to collect real-time temperature data from the charging gun. If it detects that the temperature of the charging gun is too high, the vehicle controller must stop the power output of the charging gun. Currently, the vehicle controller typically determines the temperature of the charging gun by monitoring the resistance change of the thermistor inside the charging gun, and then determines whether charging can proceed based on the temperature of the charging gun. However, different types of charging guns have different types of built-in thermistors. As a result, electric vehicles on the market are generally only able to collect temperature data from a single type of charging gun, resulting in poor compatibility. Summary of the Invention

[0003] The embodiments of the present application provide a control method for a detection system, a detection system, an electronic device, a vehicle, and a computer program product to at least solve the problem that electric vehicles on the market can only collect temperature of a single type of charging gun and have poor compatibility.

[0004] In the control method of the detection system of the embodiment of the present application, the detection system includes a detection circuit, the detection circuit includes different detection branches, and the control method includes: determining the type of thermistor configured in the charging gun based on the ambient temperature, the resistance of the detection circuit and a preset acquisition voltage range, the type of the thermistor corresponding one-to-one to the detection branch; determining the resistance of the thermistor based on the type of the thermistor and the detection branch; and controlling the operation of the charging gun based on the type of the thermistor and the resistance of the thermistor.

[0005] In some embodiments, the detection branch includes a first detection branch and a second detection branch, the thermistor includes a first thermistor and a second thermistor, the preset acquisition voltage range includes a first voltage range and a second voltage range, the first voltage range corresponds to the first thermistor, and the second voltage range corresponds to the second thermistor, and determining the type of the thermistor configured in the charging gun based on the ambient temperature, the resistance of the detection circuit, and the preset acquisition voltage range includes: determining a first acquisition voltage value based on the ambient temperature and the resistance of the first detection branch; determining whether the thermistor configured in the charging gun is the first thermistor based on the first acquisition voltage value and the first voltage range; if the thermistor configured in the charging gun is not the first thermistor, determining a second acquisition voltage value based on the ambient temperature and the resistance of the second detection branch; and determining whether the thermistor configured in the charging gun is the second thermistor based on the second acquisition voltage value and the second voltage range.

[0006] In some embodiments, the detection circuit further includes an operational amplifier circuit, the first detection branch is provided with a first resistor, and the operational amplifier circuit is provided with an operational amplifier, and determining the first acquisition voltage value based on the ambient temperature and the resistance of the first detection branch includes: determining the minimum resistance value of the first thermistor and the maximum resistance value of the first thermistor based on the ambient temperature and the first corresponding relationship; determining the minimum value of the non-inverting input terminal voltage of the operational amplifier and the maximum value of the non-inverting input terminal voltage of the operational amplifier based on the resistance value of the first resistor, the minimum resistance value of the first thermistor, and the maximum resistance value of the first thermistor; determining the first acquisition voltage value of the operational amplifier circuit based on the minimum value of the non-inverting input terminal voltage of the operational amplifier, the maximum value of the non-inverting input terminal voltage of the operational amplifier, the reference voltage of the inverting input terminal of the operational amplifier, and the amplification gain of the operational amplifier.

[0007] In some embodiments, the operational amplifier circuit is further provided with a third resistor, a fourth resistor, a fifth resistor and a sixth resistor, and the first acquisition voltage value of the operational amplifier circuit is determined according to the minimum value of the voltage at the non-inverting input terminal of the operational amplifier, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier, the reference voltage at the inverting input terminal of the operational amplifier and the amplification gain of the operational amplifier, including: determining the reference voltage at the inverting input terminal of the operational amplifier according to the resistance value of the third resistor and the resistance value of the fourth resistor; determining the amplification gain of the operational amplifier according to the resistance value of the fifth resistor and the resistance value of the sixth resistor; determining the output voltage of the operational amplifier according to the minimum value of the voltage at the non-inverting input terminal of the operational amplifier, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier, the reference voltage at the inverting input terminal of the operational amplifier and the amplification gain of the operational amplifier; and determining the first acquisition voltage value of the operational amplifier circuit according to the output voltage of the operational amplifier.

[0008] In some embodiments, the operational amplifier circuit is further provided with a voltage-dividing resistor, and determining the first acquisition voltage value of the operational amplifier circuit based on the output voltage of the operational amplifier includes: determining the first acquisition voltage value of the operational amplifier circuit based on the output voltage of the operational amplifier and the resistance value of the voltage-dividing resistor.

[0009] In some embodiments, determining whether the thermistor configured in the charging gun is the first thermistor based on the first collected voltage value and the first voltage range includes: determining that the thermistor configured in the charging gun is the first thermistor when both the maximum and minimum values ​​of the first collected voltage value are within the first voltage range; and determining that the thermistor configured in the charging gun is not the first thermistor when the maximum or minimum value of the first collected voltage value is not within the first voltage range.

[0010] In some embodiments, the detection circuit further includes an operational amplifier circuit, the second detection branch is provided with a second resistor, and the operational amplifier circuit is provided with an operational amplifier. The determining the second acquisition voltage value based on the ambient temperature and the resistance of the second detection branch includes: determining the minimum resistance value of the second thermistor and the maximum resistance value of the second thermistor based on the ambient temperature and the second corresponding relationship; determining the minimum value of the non-inverting input terminal voltage of the operational amplifier and the maximum value of the non-inverting input terminal voltage of the operational amplifier based on the resistance value of the second resistor, the minimum resistance value of the second thermistor, and the maximum resistance value of the second thermistor; determining the second acquisition voltage value of the operational amplifier circuit based on the minimum value of the non-inverting input terminal voltage of the operational amplifier, the maximum value of the non-inverting input terminal voltage of the operational amplifier, the reference voltage of the inverting input terminal of the operational amplifier, and the amplification gain of the operational amplifier.

[0011] In some embodiments, determining whether the thermistor configured in the charging gun is the second thermistor based on the second collected voltage value and the second voltage range includes: determining that the thermistor configured in the charging gun is the second thermistor when both the maximum and minimum values ​​of the second collected voltage value are within the second voltage range; and determining that the thermistor configured in the charging gun is not the second thermistor when the maximum or minimum value of the second collected voltage value is not within the second voltage range.

[0012] In some embodiments, the control method further includes: sending a temperature warning message when the thermistor configured in the charging gun is not the first thermistor and the thermistor configured in the charging gun is not the second thermistor.

[0013] In some embodiments, the detection branch includes a first detection branch, a second detection branch and an operational amplifier circuit, the thermistor includes a first thermistor and a second thermistor, and the operational amplifier circuit is provided with an operational amplifier. The determining the resistance of the thermistor according to the type of the thermistor and the detection branch includes: when the type of the thermistor is the first thermistor, collecting a first actual voltage at the non-inverting input terminal of the operational amplifier through the first detection branch and the operational amplifier circuit; determining the resistance of the first thermistor based on the first actual voltage; when the type of the thermistor is the second thermistor, collecting a second actual voltage at the non-inverting input terminal of the operational amplifier through the second detection branch and the operational amplifier circuit; and determining the resistance of the second thermistor based on the second actual voltage.

[0014] The present application also provides a detection system, which includes a controller, a detection circuit, and an ambient temperature acquisition circuit. The detection circuit and the ambient temperature acquisition circuit are both connected to the controller. The detection circuit includes different detection branches. The controller is used to implement the control method described in any of the above embodiments.

[0015] In some embodiments, the detection branch includes a first detection branch and a second detection branch, both of which are connected to the controller, the first detection branch is used to detect a first thermistor, and the second detection branch is used to detect a second thermistor.

[0016] The present application also provides an electronic device, which includes a memory and a processor, wherein the memory is configured to store a computer program, and when the processor executes the computer program, it implements the control method described in any one of the above embodiments.

[0017] The present application also provides a vehicle, comprising the detection system in any one of the above embodiments, or comprising the electronic device in any one of the above embodiments.

[0018] The present application also provides a computer program product having a computer program stored thereon, which implements the control method described in any one of the above embodiments when the program is executed by a processor.

[0019] In the control method, detection system, electronic device, vehicle, and computer program product provided by the present application, the type of thermistor configured in the charging gun is determined by the ambient temperature, the resistance of the detection circuit, and a preset acquisition voltage range. Since the type of thermistor corresponds to the detection branch, and the detection circuit includes different detection branches, the detection branch corresponding to the type of thermistor can be determined based on the type of thermistor. The resistance of the thermistor can then be determined through the detection branch, and the operation of the charging gun can be controlled based on the type and resistance of the thermistor. The control method provided by the present application can acquire the temperature of charging guns with different types of built-in thermistors and has high compatibility.

[0020] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1is a flow chart of a control method of a detection system according to some embodiments of the present application;

[0023] Figure 2 is a schematic structural diagram of a control device of a detection system in some embodiments of the present application;

[0024] Figure 3 is a circuit diagram of a detection system according to some embodiments of the present application;

[0025] Figure 4 This is a flow chart illustrating a method for controlling a detection system in some embodiments of the present application for determining the type of thermistor configured in a charging gun based on the ambient temperature, the resistance of the detection circuit, and a preset acquisition voltage range;

[0026] Figure 5 This is a flow chart of determining a first collected voltage value based on the ambient temperature and the resistance of the first detection branch in a control method of a detection system in some embodiments of the present application;

[0027] Figure 6 This is a flow chart of determining a first collected voltage value of an operational amplifier circuit according to a minimum voltage of a non-inverting input terminal of the operational amplifier, a maximum voltage of a non-inverting input terminal of the operational amplifier, a reference voltage of an inverting input terminal of the operational amplifier, and an amplification gain of the operational amplifier in a control method of a detection system in some embodiments of the present application;

[0028] Figure 7 This is a flow chart of determining a first collected voltage value of an operational amplifier circuit according to an output terminal voltage of an operational amplifier in a control method of a detection system in some embodiments of the present application;

[0029] Figure 8 This is a flow chart of determining a second collected voltage value based on ambient temperature and the resistance of a second detection branch in a control method of a detection system in some embodiments of the present application, when the thermistor configured in the charging gun is not the first thermistor;

[0030] Figure 9 This is a flow chart of determining the resistance value of a thermistor according to the type of thermistor and the detection branch in a control method of a detection system in some embodiments of the present application;

[0031] Figure 10 is a schematic diagram of the structure of a power manager in some embodiments of the present application;

[0032] Figure 11 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0033] Figure 12Fig. 1 is a schematic diagram of a connection state of a computer readable storage medium and a processor of some embodiments of the present application.

[0034] Main element label explanation:

[0035] Vehicle 100;

[0036] Detection system 10;

[0037] Controller 11, detection circuit 12, first detection branch 121, second detection branch 122, analog switch 123, ambient temperature acquisition circuit 13, operational amplifier circuit 14, operational amplifier 141, power manager 15, power supply module 151, fault processing module 152, timing module 153;

[0038] Processor 20;

[0039] Computer program product 200, computer program 202;

[0040] Electronic device 30. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like designations denote like or similar elements throughout the several views. The embodiments described below are merely exemplary and are not to be construed as limiting the embodiments of the present application.

[0042] During the charging process of an electric vehicle, it is crucial for the vehicle controller to monitor the temperature of the charging gun in real time. The charging gun is a key component of the charging system. Excessive temperature can damage internal components and lead to safety accidents. Therefore, during the charging process, the vehicle controller must promptly monitor the charging gun's temperature to ensure it operates within a safe temperature range, thereby ensuring a smooth charging process. Currently, vehicle controllers typically determine the charging gun's temperature by monitoring the resistance change of a thermistor within the charging gun. A thermistor is a component that changes its resistance with temperature, making it ideal for temperature sensing. During charging, as the temperature within the charging gun changes, the thermistor's resistance also changes. By monitoring this resistance change, the vehicle controller can calculate the actual charging gun temperature. However, different types of charging guns may be equipped with different types of thermistors. For example, some charging guns use a negative temperature coefficient thermistor, while others may use a positive temperature coefficient thermistor. These different thermistor types differ in resistance change characteristics and response speed. Therefore, the vehicle controller needs to design different signal acquisition and processing methods for each type of thermistor to ensure accurate monitoring of the charging gun's temperature. Electric vehicles currently on the market can usually only support temperature detection of a single type of charging gun. If users need to use different types of charging guns, they may need to replace the vehicle controller or make complex system adjustments, which not only increases the cost of use, but also reduces the convenience of using the vehicle. Therefore, how to improve the compatibility of the vehicle controller so that the vehicle controller can collect the temperature of charging guns with different types of built-in thermistors has become a difficult problem that those skilled in the art urgently need to solve. To solve this problem, the present application provides a control method for a detection system (such as Figure 1 As shown), detection system (as Figure 3 As shown), electronic device 30 (as Figure 11 As shown), vehicle 100 (as Figure 11 ) and computer program product 200 (as shown Figure 12 shown).

[0043] See also Figure 1 、 Figure 2 as well as Figure 3 In the control method of the detection system of the embodiment of the present application, the detection system 10 includes a detection circuit 12, and the detection circuit 12 includes different detection branches 121 / 122. The control method includes:

[0044] 03: Determine the type of thermistor configured in the charging gun based on the ambient temperature, the resistance value of the detection circuit 12, and the preset acquisition voltage range. The type of thermistor corresponds to the detection branch one by one.

[0045] 05: Determine the resistance of the thermistor based on its type and detection shunt.

[0046] 07: Control the operation of the charging gun according to the type and resistance of the thermistor.

[0047] The control method of the detection system described above can be applied to the control device of the detection system. The control device of the detection system in the embodiment of the present application includes a first determination module, a second determination module, and a control module. The first determination module is used to determine the type of thermistor configured in the charging gun based on the ambient temperature, the resistance of the detection circuit, and a preset acquisition voltage range. The type of thermistor corresponds one-to-one with the detection branch. The second determination module is used to determine the resistance of the thermistor based on the type of thermistor and the detection branch. The control module is used to control the operation of the charging gun based on the type of thermistor and the resistance of the thermistor.

[0048] Specifically, the control device of the detection system is one of the core devices of the vehicle. In electric vehicles, the control device of the detection system is an intelligent decision-making device for temperature detection of the electric vehicle charging gun. The control device of the detection system can automatically identify the type of thermistor and control the start of the vehicle's charging process by collaboratively analyzing the ambient temperature, circuit parameters and other preset conditions set by the operator.

[0049] More specifically, the control device of the detection system includes a first determination module, a second determination module, and a control module. The first determination module is used to execute method 03, the second determination module is used to execute method 05, and the control module is used to execute method 07. The first determination module determines the physical type of the thermistor in the charging gun (e.g., whether it has a positive temperature coefficient or a negative temperature coefficient) based on the real-time ambient temperature, the actual resistance signal from the detection circuit 12, and a preset voltage acquisition range (e.g., an adjustable range of 0-5V) through a preset logical judgment (this process will be explained in detail below). The second determination module selects a matching dedicated detection branch based on the thermistor type output by the first determination module, converts and calculates the voltage / current signal collected by the branch, and obtains the accurate real-time resistance value of the thermistor. The control module simultaneously receives the thermistor type output by the first determination module and the real-time resistance value of the thermistor determined by the second determination module. Based on the temperature-resistance relationship curve for the thermistor type, the control module converts the thermistor resistance value to the actual temperature value. When the temperature exceeds a threshold (which can be set by the operator), the charging gun shutdown command is triggered and the power output state is switched to avoid safety accidents caused by overheating of the charging gun.

[0050] Furthermore, please combine Figure 3The detection system 10 includes a controller 11, a detection circuit 12 and an ambient temperature acquisition circuit 13. The detection circuit 12 includes a plurality of different detection branches. Figure 3 For example, the detection circuit includes a first detection branch 121 and a second detection branch 122. For example, the first detection branch 121 can be used to detect a first thermistor (a thermistor with a positive temperature coefficient), and the second detection branch 122 can be used to detect a second thermistor (a thermistor with a negative temperature coefficient). When the charging gun is inserted, the ambient temperature acquisition circuit 13 can collect the system temperature as the ambient temperature through the controller 11. The analog switch 123 can be used to control the connection and disconnection of the first detection branch 121 and the second detection branch 122 according to the pin level of the controller 11. Different detection branches in this application correspond to different types of thermistors, thereby improving the compatibility of the controller 11 in detecting the temperature of the charging gun. This process will be explained in more detail below.

[0051] It is understood that in the control method of the detection system provided in this application, the type of thermistor configured in the charging gun is determined by the ambient temperature, the resistance of the detection circuit 12, and the preset acquisition voltage range. Since the type of thermistor corresponds to the detection branch one-to-one, and the detection circuit includes different detection branches, the detection branch corresponding to the type of thermistor can be determined based on the type of thermistor. The resistance of the thermistor can then be determined through the detection branch, and the operation of the charging gun can be controlled based on the type and resistance of the thermistor. The control method provided in this application is capable of performing temperature acquisition on charging guns with different types of built-in thermistors and has high compatibility.

[0052] In certain embodiments, see Figure 2 、 Figure 3 and Figure 4 Detection branch 12 includes a first detection branch 121 and a second detection branch 122. The thermistors include a first thermistor and a second thermistor. The preset acquisition voltage range includes a first voltage range and a second voltage range. The first voltage range corresponds to the first thermistor, and the second voltage range corresponds to the second thermistor. 03: Determine the type of thermistor configured in the charging gun based on the ambient temperature, the resistance of the detection circuit, and the preset acquisition voltage range, including:

[0053] 031: Determine a first collected voltage value according to the ambient temperature and the resistance value of the first detection branch;

[0054] 033: Determine, based on the first collected voltage value and the first voltage range, whether the thermistor configured in the charging gun is the first thermistor;

[0055] 035: When the thermistor configured in the charging gun is not the first thermistor, determine the second collected voltage value according to the ambient temperature and the resistance value of the second detection branch;

[0056] 037: Determine whether the thermistor configured in the charging gun is the second thermistor based on the second collected voltage value and the second voltage range.

[0057] The control method of the above-mentioned detection system can be applied to the control device of the detection system, wherein the first determination module is used to determine a first collected voltage value based on the ambient temperature and the resistance of the first detection branch; determine whether the thermistor configured in the charging gun is the first thermistor based on the first collected voltage value and the first voltage range; if the thermistor configured in the charging gun is not the first thermistor, determine the second collected voltage value based on the ambient temperature and the resistance of the second detection branch; and determine whether the thermistor configured in the charging gun is the second thermistor based on the second collected voltage value and the second voltage range.

[0058] Specifically, in method 031, the detection system 10 uses the currently detected system temperature as the ambient temperature data. When the charging gun is inserted into the charging port to wake up the controller, the system temperature can reflect the actual temperature of the surrounding air where the charging gun is located. At the same time, the detection system 10 first assumes that the type of thermistor in the charging gun is a first thermistor. The detection system 10 will collect the resistance value on the first detection branch 121 from the hardware circuit in real time. This resistance value reflects the change in the physical properties of the sensor inside the charging gun. Then the detection system 10 will perform a specific calculation process to comprehensively process the ambient temperature data and the real-time resistance value of the first detection branch (this process will be explained in more detail below), and finally obtain the first collected voltage value. The first collected voltage value theoretically represents the voltage signal level that should be presented if the first thermistor is connected to the circuit.

[0059] Specifically, in method 033, the first collected voltage value calculated in the previous step is compared with a preset first voltage range (which can be set by the operator) to verify that the first voltage range matches the voltage output variation pattern of the first thermistor during operation. For example, the specific comparison method is to check whether the first collected voltage value is between the minimum and maximum values ​​of the first voltage range. If the first collected voltage value is exactly within this range, it indicates that the characteristics of the currently connected sensor fully meet the expected behavior pattern of the first thermistor, and the detection system 10 can immediately make a clear judgment and confirm that the charging gun is equipped with the first thermistor. However, if the voltage value does not fall within the first voltage range, whether it is below the minimum value or exceeds the maximum value, it is an abnormal situation. At this time, the detection system 10 will automatically rule out the possibility of the first thermistor and prepare to execute the subsequent process.

[0060] Specifically, in Method 035 and Method 037, when the conclusion of Method 033 confirms that the thermistor set in the charging gun is not the first thermistor, the detection system 10 switches the detection branch, switching the detection branch from the first detection branch 121 to the second detection branch 122 (this process will be explained in detail below), and following the previous detection process, determines the second collected voltage value through the ambient temperature and the second detection branch resistance, and then determines whether the thermistor configured in the charging gun is the second thermistor based on the second collected voltage value and the second voltage range (which can be set by the operator, and the second voltage range matches the voltage output change law when the second thermistor is working). The principle of this process is similar to the judgment of whether it is the first thermistor, and will not be repeated here.

[0061] In certain embodiments, see Figure 2 、 Figure 3 and Figure 5 The detection circuit further includes an operational amplifier circuit 14, a first detection branch is provided with a first resistor R1, and the operational amplifier circuit 14 is provided with an operational amplifier 141. 031: determining a first collected voltage value according to the ambient temperature and the resistance value of the first detection branch, including:

[0062] 0311: Determine a minimum resistance value of the first thermistor and a maximum resistance value of the first thermistor according to the ambient temperature and the first corresponding relationship;

[0063] 0313: Determine a minimum value of a voltage at a non-inverting input terminal of the operational amplifier 141 and a maximum value of a voltage at a non-inverting input terminal of the operational amplifier 141 according to the resistance value of the first resistor R1, the minimum value of the resistance value of the first thermistor, and the maximum value of the resistance value of the first thermistor;

[0064] 0315: Determine the first collected voltage value of the operational amplifier circuit 14 based on the minimum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the reference voltage at the inverting input terminal of the operational amplifier 141, and the amplification gain of the operational amplifier 141.

[0065] The control method of the above-mentioned detection system can be applied to the control device of the detection system, where the first determination module is used to determine the minimum resistance value of the first thermistor and the maximum resistance value of the first thermistor based on the ambient temperature and the first corresponding relationship; determine the minimum value of the voltage at the non-inverting input terminal of the operational amplifier 141 and the maximum value of the voltage at the non-inverting input terminal of the operational amplifier 141 based on the resistance value of the first resistor R1, the minimum resistance value of the first thermistor and the maximum resistance value of the first thermistor; and determine the first collected voltage value of the operational amplifier circuit 14 based on the minimum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the reference voltage of the inverting input terminal of the operational amplifier 141 and the amplification gain of the operational amplifier 141.

[0066] Specifically, in method 0311, the detection system 10 needs to use the known ambient temperature parameters and the corresponding relationship between the resistance value of the first thermistor and the temperature to determine the lower limit value of the minimum resistance value that the first thermistor may have at the current temperature, and the upper limit value of the maximum resistance value that the first thermistor may have at the current temperature. These two extreme value parameters together constitute the theoretical resistance fluctuation range of the first thermistor under the current temperature conditions.

[0067] Specifically, in method 0313, a conversion calculation of the hardware circuit characteristics is performed based on the resistance range obtained in method 0311. Figure 3 For example, at the non-inverting input of the operational amplifier 141, the thermistor of the charging gun connected to the circuit and the first resistor R1 on the first detection branch are divided, and the voltage at the non-inverting input of the operational amplifier 141 is 5V*thermistor resistance / (thermistor resistance+first resistor R1 resistance). The temperature-resistance correspondence of the first thermistor can be obtained at the current ambient temperature. The minimum resistance and maximum resistance of the first thermistor can be obtained by Figure 3 The circuit shown obtains the minimum and maximum values ​​of the voltage at the non-inverting input of operational amplifier 141. In method 0315, detection system 10 combines the obtained voltage range parameters with the hardware parameters of operational amplifier 141 to determine the first collected voltage value of operational amplifier circuit 14 based on the minimum and maximum values ​​of the voltage at the non-inverting input of operational amplifier 141, the reference voltage at the inverting input of operational amplifier 141, and the amplification gain of operational amplifier 141.

[0068] In certain embodiments, see Figure 2 、 Figure 3 and Figure 6The operational amplifier circuit 14 is further provided with a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6. 0315: Determining a first collected voltage value of the operational amplifier circuit 14 based on the minimum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the reference voltage at the inverting input terminal of the operational amplifier 141, and the amplification gain of the operational amplifier 141 includes:

[0069] 03151: Determine a reference voltage at the inverting input terminal of the operational amplifier 141 according to the resistance value of the third resistor R3 and the resistance value of the fourth resistor R4;

[0070] 03153: Determine the amplification gain of the operational amplifier 141 according to the resistance value of the fifth resistor R5 and the resistance value of the sixth resistor R6;

[0071] 03155: Determine the output voltage of the operational amplifier 141 according to the minimum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the reference voltage at the inverting input terminal of the operational amplifier 141, and the amplification gain of the operational amplifier 141;

[0072] 03157: Determine a first collected voltage value of the operational amplifier circuit 14 according to the output voltage of the operational amplifier 141 .

[0073] The control method of the above-mentioned detection system can be applied to the control device of the detection system, and the first determination module is used to determine the reference voltage of the inverting input terminal of the operational amplifier 141 according to the resistance value of the third resistor R3 and the resistance value of the fourth resistor R4; determine the amplification gain of the operational amplifier 141 according to the resistance value of the fifth resistor R5 and the resistance value of the sixth resistor R6; determine the output terminal voltage of the operational amplifier 141 according to the minimum value of the non-inverting input terminal voltage of the operational amplifier 141, the maximum value of the non-inverting input terminal voltage of the operational amplifier 141, the reference voltage of the inverting input terminal of the operational amplifier 141 and the amplification gain of the operational amplifier 141; and determine the first acquisition voltage value of the operational amplifier circuit 14 according to the output terminal voltage of the operational amplifier 141.

[0074] Specifically, please combine Figure 3 At the inverting input terminal of the operational amplifier 141, the third resistor R3 and the fourth resistor R4 jointly form a bias circuit to provide a reference voltage to the inverting input terminal of the operational amplifier 141. The reference voltage of the inverting input terminal of the operational amplifier 141 is 5V*the resistance value of the third resistor R3 / (the resistance value of the third resistor R3+the resistance value of the fourth resistor R4).

[0075] Specifically, please combine Figure 3, the amplification gain of the operational amplifier 141 is the ratio of the sixth resistor R6 to the fifth resistor R5. The output voltage of the operational amplifier 141 is (the voltage of the non-inverting input terminal of the operational amplifier 141 - the reference voltage of the inverting input terminal of the operational amplifier 141) * amplification gain. In the above formula, the voltage of the non-inverting input terminal of the operational amplifier 141 takes the minimum value of the non-inverting input terminal voltage and the maximum value of the non-inverting input terminal voltage respectively, and the lower limit value and the upper limit value of the voltage of the output terminal of the operational amplifier 141 are calculated. The voltage at the output terminal of the operational amplifier 141 is divided by the voltage divider resistors R9 / R10 and collected through the controller ADC2 port to obtain a first collected voltage value. If the value range of the first collected voltage value is within the first voltage range, it is determined that the first thermistor is configured in the charging gun.

[0076] In certain embodiments, see Figure 2 and Figure 7 The operational amplifier circuit 14 is further provided with a voltage divider resistor R9 / R10, 03157: According to the output terminal voltage of the operational amplifier 141, the first acquisition voltage value of the operational amplifier circuit 14 is determined, including:

[0077] 031571: Determine the first collected voltage value of the operational amplifier circuit 14 according to the output voltage of the operational amplifier 141 and the resistance of the voltage divider resistors R9 / R10.

[0078] The control method of the detection system can be applied to the control device of the detection system. The first determination module is used to determine the first collected voltage value of the operational amplifier circuit 14 according to the output voltage of the operational amplifier 141 and the resistance of the voltage divider resistors R9 / R10.

[0079] It is understandable that in order to ensure that the voltage value at the output terminal of the operational amplifier is within the acquisition voltage range of the controller 11 , the output terminal of the operational amplifier 141 is provided with voltage dividing resistors R9 / R10 .

[0080] See also Figure 2 and Figure 3 In some embodiments, 033: determining whether the thermistor configured in the charging gun is the first thermistor according to the first collected voltage value and the first voltage range includes:

[0081] 0331: When the maximum value and the minimum value of the first collected voltage value are both within the first voltage range, determining that the thermistor configured in the charging gun is the first thermistor;

[0082] 0333: When the maximum value or the minimum value of the first collected voltage value is not within the first voltage range, it is determined that the thermistor configured in the charging gun is not the first thermistor.

[0083] The control method of the above-mentioned detection system can be applied to the control device of the detection system. The first determination module is used to determine that the thermistor configured in the charging gun is the first thermistor when the maximum value and the minimum value of the first collected voltage value are both within the first voltage range; when the maximum value or the minimum value of the first collected voltage value is not within the first voltage range, determine that the thermistor configured in the charging gun is not the first thermistor.

[0084] Specifically, in method 0331, the detection system 10 performs a verification operation based on the first collected voltage value. Specifically, the maximum and minimum values ​​of the first collected voltage value are simultaneously checked. The minimum value of the first collected voltage value must be greater than or equal to the minimum value of the first voltage range, and the maximum value of the first collected voltage value must be less than or equal to the maximum value of the first voltage range. Both of these conditions must be met to confirm that the thermistor actually installed in the charging gun is the first thermistor type. Method 0333, acting as the logical opposite of method 0331, is triggered when any of the following abnormal conditions occur: if the theoretical minimum value of the first collected voltage value is less than the minimum value boundary of the first voltage range, i.e., below the lower limit standard; if the theoretical maximum value of the first collected voltage value is greater than the maximum value boundary of the first voltage range, i.e., above the upper limit standard; or if both the lower limit and the upper limit are met at the same time, the detection system 10 will make an exclusionary judgment and determine that the thermistor actually installed in the charging gun is not the first thermistor type.

[0085] See also Figure 2 、 Figure 3 and Figure 8 In some embodiments, the detection circuit further includes an operational amplifier circuit 14, the second detection branch is provided with a second resistor R2, and the operational amplifier circuit 14 is provided with an operational amplifier 141. 035: Determining the second collected voltage value according to the ambient temperature and the resistance value of the second detection branch includes:

[0086] 0351: Determine a minimum resistance value of the second thermistor and a maximum resistance value of the second thermistor according to the ambient temperature and the second corresponding relationship;

[0087] 0353: Determine a minimum value of the voltage at the non-inverting input terminal of the operational amplifier 141 and a maximum value of the voltage at the non-inverting input terminal of the operational amplifier 141 according to the resistance value of the second resistor R2, the minimum value of the resistance value of the second thermistor, and the maximum value of the resistance value of the second thermistor;

[0088] 0355: Determine the second collected voltage value of the operational amplifier circuit 14 based on the minimum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier 141, the reference voltage at the inverting input terminal of the operational amplifier 141 and the amplification gain of the operational amplifier 141.

[0089] The control method of the above-mentioned detection system can be applied to the control device of the detection system, where the first determination module is used to determine the minimum resistance value and the maximum resistance value of the second thermistor based on the ambient temperature and the second corresponding relationship; determine the minimum value of the non-inverting input terminal voltage of the operational amplifier 141 and the maximum value of the non-inverting input terminal voltage of the operational amplifier 141 based on the resistance value of the second resistor R2, the minimum resistance value of the second thermistor and the maximum resistance value of the second thermistor; and determine the second collected voltage value of the operational amplifier circuit 14 based on the minimum value of the non-inverting input terminal voltage of the operational amplifier 141, the maximum value of the non-inverting input terminal voltage of the operational amplifier 141, the reference voltage of the inverting input terminal of the operational amplifier 141 and the amplification gain of the operational amplifier 141.

[0090] Specifically, in method 0351, the detection system 10 needs to use the known ambient temperature parameter and the corresponding relationship between the resistance value of the second thermistor and the temperature to determine the lower limit value of the minimum resistance value that the second thermistor may have at the current temperature, and the upper limit value of the maximum resistance value that the second thermistor may have at the current temperature. These two extreme value parameters together constitute the theoretical resistance fluctuation range of the second thermistor under the current temperature conditions.

[0091] Specifically, in method 0353, the conversion calculation of the hardware circuit characteristics is performed based on the resistance range obtained in method 0351. Figure 3 For example, at the non-inverting input of the operational amplifier 141, the thermistor of the charging gun connected to the circuit and the second resistor R2 on the second detection branch are divided, and the voltage at the non-inverting input of the operational amplifier 141 is 5V*thermistor resistance / (thermistor resistance+second resistor R2 resistance). The temperature-resistance correspondence of the second thermistor can be obtained at the current ambient temperature. The minimum resistance and maximum resistance of the second thermistor can be obtained by Figure 3 The circuit shown obtains the minimum and maximum values ​​of the voltage at the non-inverting input terminal of operational amplifier 141. In method 0355, detection system 10 comprehensively calculates the obtained voltage range parameters with the hardware parameters of operational amplifier 141, and determines the second collected voltage value of operational amplifier circuit 14 based on the minimum and maximum values ​​of the voltage at the non-inverting input terminal of operational amplifier 141, the reference voltage at the inverting input terminal of operational amplifier 141, and the amplification gain of operational amplifier 141.

[0092] In addition, the principle of determining the second collected voltage value of the operational amplifier circuit 14 is similar to the principle of determining the first collected voltage value of the operational amplifier circuit 14 mentioned above, and will not be repeated here.

[0093] Referring to Figure 2 and Figure 3 In some embodiments, 037: determining, according to the second acquisition voltage value and the second voltage range, whether the thermistor arranged in the charging gun is the second thermistor, comprising:

[0094] 0371: determining that the thermistor arranged in the charging gun is the second thermistor in the case that the maximum value and the minimum value of the second acquisition voltage value are both within the second voltage range;

[0095] 0373: determining that the thermistor arranged in the charging gun is not the second thermistor in the case that the maximum value or the minimum value of the second acquisition voltage value is not within the second voltage range.

[0096] The control method of the detection system described above can be applied to the control device of the detection system, and the first determination module is configured to determine that the thermistor arranged in the charging gun is the second thermistor in the case that the maximum value and the minimum value of the second acquisition voltage value are both within the second voltage range, and determine that the thermistor arranged in the charging gun is not the second thermistor in the case that the maximum value or the minimum value of the second acquisition voltage value is not within the second voltage range.

[0097] Specifically, in method 0371, the detection system 10 performs verification operation according to the second acquisition voltage value, and the specific method is to check the maximum value and the minimum value of the second acquisition voltage value at the same time. The minimum value of the second acquisition voltage value must be greater than or equal to the minimum value of the second voltage range, and at the same time, the maximum value of the second acquisition voltage value must be less than or equal to the maximum value of the second voltage range. Only when the two conditions are met at the same time, it can be determined that the thermistor actually installed in the charging gun is the second thermistor type. Method 0373, as the logical opposite judgment condition of method 0371, takes effect when any of the following abnormal situations occurs: if the theoretical minimum value of the second acquisition voltage value is less than the minimum value boundary of the second voltage range, i.e. lower than the lower limit standard, or the theoretical maximum value of the second acquisition voltage value is greater than the maximum value boundary of the second voltage range, i.e. exceeds the upper limit standard, or both lower than the lower limit and exceeds the upper limit. As long as any of the three situations is met, the detection system 10 will make an exclusive judgment to determine that the thermistor actually installed in the charging gun is not the second thermistor type, and the detection system 10 will rejudge the type of the thermistor in the charging gun according to the above method.

[0098] Referring to Figure 2 , Figure 3 and Figure 4 In some embodiments, the control method further comprises:

[0099] 039: In the case that the thermistor arranged in the charging gun is not the first thermistor and the thermistor arranged in the charging gun is not the second thermistor, the temperature warning message information is sent.

[0100] The control method of the detection system can be applied to a control device of the detection system. The first determination module is configured to, in the case that the thermistor arranged in the charging gun is not the first thermistor and the thermistor arranged in the charging gun is not the second thermistor, send the temperature warning message information.

[0101] It can be understood that if the type of the thermistor arranged in the charging gun cannot be determined after multiple repeated determinations, the detection system 10 sends the temperature signal warning message to the user.

[0102] Please refer to Figure 2 , Figure 3 and Figure 9 In some embodiments, the detection branch includes a first detection branch, a second detection branch, and an operational amplifier circuit 14. The thermistor includes a first thermistor and a second thermistor. The operational amplifier circuit 14 is provided with an operational amplifier 141. 05: According to the type of the thermistor and the detection branch, the resistance value of the thermistor is determined, including:

[0103] 051: In the case that the type of the thermistor is the first thermistor, the first actual voltage of the non-inverting input terminal of the operational amplifier 141 is collected through the first detection branch and the operational amplifier circuit 14;

[0104] 053: The resistance value of the first thermistor is determined according to the first actual voltage;

[0105] 055: In the case that the type of the thermistor is the second thermistor, the second actual voltage of the non-inverting input terminal of the operational amplifier 141 is collected through the second detection branch and the operational amplifier circuit 14;

[0106] 057: The resistance value of the second thermistor is determined according to the second actual voltage.

[0107] The control method of the detection system can be applied to a control device of the detection system. The second determination module is configured to, in the case that the type of the thermistor is the first thermistor, collect the first actual voltage of the non-inverting input terminal of the operational amplifier 141 through the first detection branch and the operational amplifier circuit 14; determine the resistance value of the first thermistor according to the first actual voltage; in the case that the type of the thermistor is the second thermistor, collect the second actual voltage of the non-inverting input terminal of the operational amplifier 141 through the second detection branch and the operational amplifier circuit 14; and determine the resistance value of the second thermistor according to the second actual voltage.

[0108] It can be understood that after confirming the type of thermistor in the charging gun, the formula used in the previous process of determining the thermistor in the charging gun is used to calculate the voltage at the non-inverting input terminal of the operational amplifier 141 through the first collected voltage value or the second collected voltage value of the controller 11, and the resistance of the first thermistor or the second thermistor is calculated using the voltage divider relationship between the thermistor at the non-inverting input terminal of the operational amplifier 141 and the first resistor R1 or the second resistor R2, thereby determining the temperature of the first thermistor or the second thermistor to determine whether charging can be performed through the charging gun.

[0109] In summary, in the control method and control device of the detection system provided in this application, the type of thermistor configured in the charging gun is determined by the ambient temperature, the resistance of the detection circuit, and the preset acquisition voltage range. Since the type of thermistor corresponds to the detection branch one-to-one, and the detection circuit includes different detection branches, the detection branch corresponding to the type of thermistor can be determined according to the type of thermistor, and the resistance of the thermistor can be determined through the detection branch. The operation of the charging gun is controlled based on the type of thermistor and the resistance of the thermistor. The control method provided in this application can collect temperature for charging guns with different types of built-in thermistors and has high compatibility.

[0110] In certain embodiments, see Figure 3 The present application also provides a detection system 10, which includes a controller 11, a detection circuit 12 and an ambient temperature acquisition circuit 13. The detection circuit 12 and the ambient temperature acquisition circuit 13 are both connected to the controller 11. The detection circuit 12 includes different detection branches. The controller 11 is used to implement the control method in any of the above-mentioned embodiments.

[0111] In certain embodiments, see Figure 3 The detection branch includes a first detection branch 121 and a second detection branch 122. The first detection branch 121 and the second detection branch 122 are both connected to the controller 11. The first detection branch 121 is used to detect the first thermistor, and the second detection branch 122 is used to detect the second thermistor.

[0112] In certain embodiments, see Figure 3 The detection system also includes a power manager 15 connected to the controller. In the case of power overvoltage, the power manager 15 controls the power to be turned off and sends a signal to the controller 11 to reset the controller 11. In the case of power undervoltage, the power manager 15 sends a signal to the controller 11 to reset the controller 11.

[0113] In certain embodiments, see Figure 3 and Figure 10The power manager 15 further comprises a power supply module 151, a fault processing module 152 and a timing module 153. In the case of overvoltage of the power supply, the fault processing module 152 controls the power supply to be turned off and sends an overvoltage fault signal. In the case of under-voltage of the power supply, the fault processing module 152 sends an under-voltage fault signal. In the case that the controller 11 detects a fault of the single-chip microcomputer, the controller 11 sends a fault indication signal to the power manager 15, so that the controller 11 is reset. The timing module 153 is used to receive a watchdog signal sent by the controller 11. In the case that the watchdog signal is incorrect or the watchdog signal is not received within a specified window time, the power manager 15 sends a timing fault indication signal to the controller 11 through the timing module 153. If the timing fault indication signal is sent for a plurality of times continuously, the power manager 15 sends a signal to the controller 11, so that the controller 11 is reset.

[0114] In some embodiments, referring to Figure 11 The application further provides an electronic device 30 comprising a memory configured to store a computer program and a processor. When the processor executes the computer program, the control method in any one of the above embodiments is implemented.

[0115] For example, when the processor of the electronic device 30 executes the computer program stored in the memory, the following control method is implemented:

[0116] 03: According to the ambient temperature, the resistance value of the detection circuit and the preset acquisition voltage range, the type of the thermistor arranged in the charging gun is determined. The type of the thermistor corresponds to the detection branch in one-to-one correspondence.

[0117] 05: According to the type of the thermistor and the detection branch, the resistance value of the thermistor is determined.

[0118] 07: According to the type of the thermistor and the resistance value of the thermistor, the charging gun is controlled to operate.

[0119] For another example, when the processor of the electronic device 30 executes the computer program stored in the memory, the following control method is implemented:

[0120] 031: According to the ambient temperature and the resistance value of the first detection branch, the first acquisition voltage value is determined.

[0121] 033: According to the first acquisition voltage value and the first voltage range, it is determined whether the thermistor arranged in the charging gun is the first thermistor.

[0122] 035: In the case that the thermistor arranged in the charging gun is not the first thermistor, according to the ambient temperature and the resistance value of the second detection branch, the second acquisition voltage value is determined.

[0123] 037: Determine whether the thermistor configured in the charging gun is the second thermistor based on the second collected voltage value and the second voltage range.

[0124] For another example, when the processor of the electronic device 30 executes the computer program stored in the memory, it can also implement the control methods in 0311, 0313, 0315, 03151, 03153, 03155, 03157, 031571, 0331, 0333, 0351, 0353, 0355, 0371, 0373, 039, 051, 053, 055 and 057.

[0125] In certain embodiments, see Figure 11 The present application also provides a vehicle 100 , comprising the detection system 10 in any of the above embodiments or the electronic device 30 in any of the above embodiments.

[0126] See also Figure 12 In some embodiments, the present application further provides a computer program product 200 on which a computer program 202 is stored, which implements the control method in any of the above embodiments when executed by a processor.

[0127] For example, when the computer program 202 is executed by the processor 20, the following control method is implemented:

[0128] 03: Determine the type of thermistor configured in the charging gun based on the ambient temperature, the resistance of the detection circuit, and the preset acquisition voltage range. The type of thermistor corresponds to the detection shunt one by one.

[0129] 05: Determine the resistance of the thermistor based on its type and detection shunt.

[0130] 07: Control the operation of the charging gun according to the type and resistance of the thermistor.

[0131] For another example, when the computer program 202 is executed by the processor 20, the following control method is implemented:

[0132] 031: Determine a first collected voltage value according to the ambient temperature and the resistance value of the first detection branch;

[0133] 033: Determine, based on the first collected voltage value and the first voltage range, whether the thermistor configured in the charging gun is the first thermistor;

[0134] 035: When the thermistor configured in the charging gun is not the first thermistor, determine the second collected voltage value according to the ambient temperature and the resistance value of the second detection branch;

[0135] 037: Determine whether the thermistor configured in the charging gun is the second thermistor based on the second collected voltage value and the second voltage range.

[0136] For another example, when the computer program 202 is executed by the processor 20, it can also implement the control methods in 0311, 0313, 0315, 03151, 03153, 03155, 03157, 031571, 0331, 0333, 0351, 0353, 0355, 0371, 0373, 039, 051, 053, 055 and 057.

[0137] In the computer program product 200 of the present application, the type of thermistor configured in the charging gun is determined based on the ambient temperature, the resistance of the detection circuit, and a preset acquisition voltage range. Since the type of thermistor corresponds to the detection branch, and the detection circuit includes different detection branches, the detection branch corresponding to the thermistor type can be determined based on the thermistor type. The thermistor resistance is then determined through the detection branch, and the operation of the charging gun is controlled based on the thermistor type and the thermistor resistance. The control method provided in this application can collect temperature for charging guns with different types of built-in thermistors and has high compatibility.

[0138] In the description of this specification, the reference terms "certain embodiments", "in an example", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0139] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0140] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A control method for a detection system, characterized in that: The detection system includes a detection circuit, the detection circuit includes different detection branches, and the control method includes: Determining the type of thermistor configured in the charging gun based on the ambient temperature, the resistance of the detection circuit, and a preset acquisition voltage range, wherein the type of thermistor corresponds to the detection branch one-to-one; determining a resistance value of the thermistor according to the type of the thermistor and the detection branch; The operation of the charging gun is controlled according to the type of the thermistor and the resistance value of the thermistor.

2. The control method according to claim 1, characterized in that: The detection branch includes a first detection branch and a second detection branch, the thermistor includes a first thermistor and a second thermistor, the preset acquisition voltage range includes a first voltage range and a second voltage range, the first voltage range corresponds to the first thermistor, and the second voltage range corresponds to the second thermistor, and determining the type of thermistor configured in the charging gun based on the ambient temperature, the resistance value of the detection circuit, and the preset acquisition voltage range includes: determining a first collected voltage value according to the ambient temperature and the resistance value of the first detection branch; determining, based on the first collected voltage value and the first voltage range, whether the thermistor configured in the charging gun is the first thermistor; When the thermistor configured in the charging gun is not the first thermistor, determining a second collected voltage value according to the ambient temperature and the resistance value of the second detection branch; According to the second collected voltage value and the second voltage range, it is determined whether the thermistor configured in the charging gun is the second thermistor.

3. The control method according to claim 2, characterized in that: The detection circuit further includes an operational amplifier circuit, the first detection branch is provided with a first resistor, and the operational amplifier circuit is provided with an operational amplifier. Determining the first collected voltage value according to the ambient temperature and the resistance value of the first detection branch includes: Determining a minimum resistance value of the first thermistor and a maximum resistance value of the first thermistor according to the ambient temperature and the first corresponding relationship; determining a minimum value of a voltage at a non-inverting input terminal of the operational amplifier and a maximum value of a voltage at a non-inverting input terminal of the operational amplifier according to a resistance value of the first resistor, a minimum resistance value of the first thermistor, and a maximum resistance value of the first thermistor; The first acquisition voltage value of the operational amplifier circuit is determined according to the minimum value of the voltage at the non-inverting input terminal of the operational amplifier, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier, the reference voltage at the inverting input terminal of the operational amplifier, and the amplification gain of the operational amplifier.

4. The control method according to claim 3, characterized in that: The operational amplifier circuit is further provided with a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor. The first acquisition voltage value of the operational amplifier circuit is determined according to the minimum value of the voltage at the non-inverting input terminal of the operational amplifier, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier, the reference voltage at the inverting input terminal of the operational amplifier, and the amplification gain of the operational amplifier, including: determining a reference voltage of an inverting input terminal of the operational amplifier according to a resistance value of the third resistor and a resistance value of the fourth resistor; determining an amplification gain of the operational amplifier according to the resistance value of the fifth resistor and the resistance value of the sixth resistor; determining the output voltage of the operational amplifier according to the minimum value of the voltage at the non-inverting input terminal of the operational amplifier, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier, the reference voltage at the inverting input terminal of the operational amplifier, and the amplification gain of the operational amplifier; A first acquisition voltage value of the operational amplifier circuit is determined according to the output terminal voltage of the operational amplifier.

5. The control method according to claim 4, characterized in that: The operational amplifier circuit is further provided with a voltage-dividing resistor, and determining the first collected voltage value of the operational amplifier circuit according to the output terminal voltage of the operational amplifier includes: A first collected voltage value of the operational amplifier circuit is determined according to the output terminal voltage of the operational amplifier and the resistance value of the voltage divider resistor.

6. The control method according to claim 2, characterized in that: The determining, based on the first collected voltage value and the first voltage range, whether the thermistor configured in the charging gun is the first thermistor includes: When the maximum value and the minimum value of the first collected voltage value are both within the first voltage range, determining that the thermistor configured in the charging gun is the first thermistor; When the maximum value or the minimum value of the first collected voltage value is not within the first voltage range, it is determined that the thermistor configured in the charging gun is not the first thermistor.

7. The control method according to claim 2, characterized in that: The detection circuit further includes an operational amplifier circuit, the second detection branch is provided with a second resistor, and the operational amplifier circuit is provided with an operational amplifier. Determining the second collected voltage value according to the ambient temperature and the resistance value of the second detection branch includes: determining a minimum resistance value of the second thermistor and a maximum resistance value of the second thermistor according to the ambient temperature and the second corresponding relationship; determining a minimum value of a voltage at a non-inverting input terminal of the operational amplifier and a maximum value of a voltage at a non-inverting input terminal of the operational amplifier according to a resistance value of the second resistor, a minimum resistance value of the second thermistor, and a maximum resistance value of the second thermistor; The second acquisition voltage value of the operational amplifier circuit is determined according to the minimum value of the voltage at the non-inverting input terminal of the operational amplifier, the maximum value of the voltage at the non-inverting input terminal of the operational amplifier, the reference voltage at the inverting input terminal of the operational amplifier and the amplification gain of the operational amplifier.

8. The control method according to claim 2, characterized in that: The determining, based on the second collected voltage value and the second voltage range, whether the thermistor configured in the charging gun is the second thermistor includes: When the maximum value and the minimum value of the second collected voltage value are both within the second voltage range, determining that the thermistor configured in the charging gun is the second thermistor; When the maximum value or the minimum value of the second collected voltage value is not within the second voltage range, it is determined that the thermistor configured in the charging gun is not the second thermistor.

9. The control method according to claim 2, characterized in that: The control method further includes: When the thermistor configured in the charging gun is not the first thermistor and the thermistor configured in the charging gun is not the second thermistor, a temperature warning message is sent.

10. The control method according to claim 1, characterized in that: The detection branch includes a first detection branch, a second detection branch, and an operational amplifier circuit; the thermistor includes a first thermistor and a second thermistor; the operational amplifier circuit is provided with an operational amplifier; and determining the resistance value of the thermistor according to the type of the thermistor and the detection branch includes: In a case where the type of the thermistor is a first thermistor, collecting a first actual voltage at a non-inverting input terminal of the operational amplifier through the first detection branch and the operational amplifier circuit; determining a resistance value of the first thermistor according to the first actual voltage; In a case where the type of the thermistor is a second thermistor, collecting a second actual voltage at the non-inverting input terminal of the operational amplifier through the second detection branch and the operational amplifier circuit; The resistance value of the second thermistor is determined according to the second actual voltage.

11. A detection system, characterized in that: The detection system includes a controller, a detection circuit and an ambient temperature acquisition circuit. The detection circuit and the ambient temperature acquisition circuit are both connected to the controller. The detection circuit includes different detection branches. The controller is used to implement the control method described in any one of claims 1 to 10.

12. The detection system according to claim 11, characterized in that: The detection branch includes a first detection branch and a second detection branch, both of which are connected to the controller. The first detection branch is used to detect a first thermistor, and the second detection branch is used to detect a second thermistor.

13. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory is configured to store a computer program, and the processor implements the control method according to any one of claims 1 to 10 when executing the computer program.

14. A vehicle, characterized in that: The detection system according to any one of claims 11 to 12, or the electronic device according to claim 13.

15. A computer program product having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method according to any one of claims 1 to 10 is implemented.

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