A battery vehicle battery voltage detection method and system

Abstract

The present invention discloses a battery vehicle battery voltage detection method and system. The present invention relates to the field of vehicle battery voltage detection. A clock oscillator is used to generate a stable standard signal, thereby constructing a novel vehicle battery voltage testing and correction system to quickly detect the normal working range and real-time working conditions of the vehicle battery, and to promptly process abnormal working conditions of the vehicle battery, thereby simplifying calculations, improving the stability and accuracy of vehicle battery voltage detection, extending the battery life and ensuring that the vehicle is always in a reliable working state, and reducing the cost of vehicle battery maintenance by reducing maintenance costs and improving vehicle reliability.

Description

Technical Field

[0001] The invention relates to the field of vehicle battery voltage detection, and is applicable to a battery vehicle battery voltage detection method and system. Background Art

[0002] As the new energy vehicle market continues to expand, the accuracy requirements for battery voltage detection are also getting higher and higher, which will prompt manufacturers to continuously improve the accuracy of their detection equipment. For example, there are already some high-precision digital multimeters that can measure battery voltage more accurately. Some domestic manufacturers are studying how to implement a combination of multiple detection technologies in different types of batteries. For example, many new energy vehicle manufacturers are considering using methods such as CAN bus, voltmeter and electronic circuit at the same time to obtain accurate data under various conditions. Many new energy vehicle manufacturers are committed to developing automated detection systems. This means that the vehicle will automatically monitor the battery voltage and adjust it to avoid safety accidents and vehicle damage caused by battery damage or failure. With the rapid development of the Internet of Things and smart vehicle technology, vehicle battery voltage detection technology will also tend to be more and more networked. Clock oscillators are a common frequency stabilization source in electronic devices, used to generate stable clock signals. With the advancement of technology, the stability and phase noise of clock oscillators have been significantly improved. In order to meet the requirements of modern electronic equipment for volume and power consumption, clock oscillators continue to pursue miniaturization and integration. With the increase in communication and computing needs, the operating frequency and frequency band requirements of clock oscillators are also increasing. Clock oscillators play an important role in many key applications, so their reliability and life are also important considerations.

[0003] For example, the existing patent application publication number CN115384352A discloses a vehicle battery detection method, equipment and storage medium, which detects the vehicle battery usage through key information and switch information, wherein key insertion and disconnection respectively control the output of battery alarm signals to detect the vehicle battery usage, and switch disconnection and switch closure and switch disconnection are used to detect whether the vehicle switch is disconnected. However, this method is limited to detecting whether the vehicle battery is in normal use, and cannot determine whether there are problems with the battery, such as aging or damage, but cannot determine the current status of the vehicle battery, and increases the vehicle's later battery maintenance costs, reduces the accuracy of battery detection and the reliability of normal vehicle operation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention can effectively solve the problems in the background technology through a battery vehicle battery voltage detection method and system: it is limited to detecting whether the vehicle battery is in normal use, and cannot determine whether there are problems with the battery, such as aging or damage, but cannot determine the current state of the vehicle battery, and increases the cost of vehicle battery maintenance in the later stage, reduces the accuracy of battery detection and the reliability of normal operation of the vehicle. To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A battery voltage detection system for a battery vehicle includes the following specific modules:

[0006] A system power supply module, including a voltage divider unit for adjusting the vehicle battery input system voltage;

[0007] A signal acquisition module, including a sensor signal acquisition unit for acquiring a vehicle battery voltage signal;

[0008] The signal processing module includes a digital-to-analog conversion unit for performing digital-to-analog conversion on the collected vehicle battery voltage signal, amplifying the vehicle battery voltage signal after the digital-to-analog conversion through an operational amplifier unit, and filtering the amplified vehicle battery voltage signal through a filtering unit;

[0009] A clock oscillator signal module, comprising a signal output control unit for controlling the output of a clock oscillator signal, and a clock oscillator output signal unit for outputting a standard voltage signal;

[0010] The signal analysis output module includes a signal analysis unit for comparing the vehicle battery voltage signal with the standard voltage signal, an adjustment control unit for correcting the amplitude, phase angle and frequency of the vehicle battery voltage signal by outputting the standard voltage signal, and outputting the current voltage condition of the vehicle battery and the vehicle battery voltage after correction and control to a visualization screen through the output unit.

[0011] As a preferred solution of the battery voltage detection system for a battery vehicle of the present invention, wherein:

[0012] The voltage divider unit includes a vehicle battery terminal, which provides a voltage divider for the vehicle battery. The vehicle battery terminal outputs a voltage and inputs the voltage into a voltage divider. The voltage divider unit adjusts the output range of the vehicle battery voltage, and the adjusted voltage is used as the starting voltage.

[0013] As a preferred solution of the battery voltage detection system for a battery vehicle of the present invention, wherein:

[0014] The collected vehicle battery voltage signal is subjected to digital-to-analog conversion, amplification processing and filtering processing by the signal processing module to obtain a first input voltage comparison signal;

[0015] The digital-to-analog conversion unit converts the vehicle battery voltage signal collected by the sensor signal collection unit into AC-DC conversion;

[0016] The operational amplifier unit performs signal amplification processing on the vehicle battery voltage signal after AC / DC conversion;

[0017] The filtering processing unit performs signal burr elimination and high-pass filtering on the vehicle battery voltage signal after signal amplification, and the processed vehicle battery voltage signal is used as the first input voltage comparison signal, and the first input voltage comparison signal is input into the signal analysis unit.

[0018] As a preferred solution of the battery voltage detection system for a battery vehicle of the present invention, wherein:

[0019] The signal output control unit controls the clock oscillator output signal unit to output a second input voltage comparison signal;

[0020] The signal output control unit controls the clock oscillator output signal unit to output a standard voltage signal, the standard voltage signal output by the clock oscillator output signal unit is used as a second input voltage comparison signal, and the second input voltage comparison signal is input into the signal analysis unit;

[0021] The clock oscillator output signal unit includes a clock oscillator that emits a standard voltage signal. As a preferred solution of the battery vehicle battery voltage detection system of the present invention, wherein:

[0022] After receiving the processed vehicle battery voltage signal and the standard voltage signal, the signal analysis unit collects the voltage signals including the peak value, period and frequency respectively;

[0023] The signal analysis unit compares the first input voltage comparison signal and the second input voltage comparison signal. If the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal are all within a normal range, the vehicle battery is operating normally, and the vehicle battery voltage signal is output through the output unit. If the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or are lower than the standard range, the vehicle battery is operating abnormally, and the vehicle battery voltage is adjusted through the signal adjustment control unit.

[0024] As a preferred solution of the battery voltage detection system for a battery vehicle of the present invention, wherein:

[0025] Collect the first input voltage comparison signal frequency and the second input voltage comparison signal frequency, and calculate the frequency difference to determine whether the vehicle battery frequency is abnormal after processing. The frequency difference expression is as follows:

[0026]

[0027] in, is the first input voltage comparison signal frequency, is the second input voltage comparison signal frequency;

[0028] The amplitudes of the first input voltage comparison signal and the second input voltage comparison signal are calculated respectively and compared. The amplitude calculation expression is as follows:

[0029]

[0030] Wherein, V is the amplitude of the first input voltage comparison signal and the second input voltage comparison signal, T is the period of the collected voltage signal, R is the resistance of the connected fixed resistor, and U is the peak value of the collected voltage signal. is the angular frequency of the collected voltage signal, t is any moment;

[0031] The expression for angular frequency is as follows:

[0032]

[0033] Where, f is the frequency of the collected voltage signal;

[0034] By calculating the phase angle difference between the first input voltage comparison signal and the second input voltage comparison signal at any time, it is possible to determine whether the processed vehicle battery voltage signal is within the normal range. The phase angle difference expression is as follows:

[0035]

[0036] in, is the first input voltage comparison signal period, is the second input voltage comparison signal period, It is the standard signal period of vehicle battery voltage.

[0037] As a preferred solution of the battery voltage detection system for a battery vehicle of the present invention, wherein:

[0038] The determining whether the vehicle battery frequency is abnormal after the processing includes determining the vehicle battery amplitude, phase angle and frequency;

[0039] Amplitude judgment includes, if , then the car battery working voltage is normal, if or The car battery is working abnormally;

[0040] Phase angle judgment includes, if , the vehicle battery is working normally. , then the vehicle battery is working abnormally;

[0041] The frequency is determined based on the vehicle battery output voltage parameters. , the vehicle battery is in normal use; if , the vehicle battery is working abnormally.

[0042] As a preferred solution of the battery voltage detection system for a battery vehicle of the present invention, wherein:

[0043] If the vehicle battery is working abnormally, the vehicle battery voltage is corrected by the signal adjustment control unit using the second input voltage comparison signal as a correction signal;

[0044] The adjustment control unit respectively collects the amplitude, phase angle and frequency of the first input voltage comparison signal and the amplitude, phase angle and frequency of the second input voltage comparison signal output by the clock oscillator output signal unit, and uses the standard voltage signal output by the clock oscillator output signal unit as a correction signal to simultaneously correct the amplitude, phase angle and frequency of the first input voltage comparison signal until the voltage output by the vehicle battery fluctuates within a normal range.

[0045] As a preferred solution of the battery voltage detection system for a battery vehicle of the present invention, wherein:

[0046] The normal range includes the normal working voltage of the vehicle battery, which is a sinusoidal voltage with amplitude, phase angle and frequency, all of which are fixed values ​​or float normally within the normal working range;

[0047] The operating abnormality includes that the vehicle battery voltage is not at a normal operating voltage of the vehicle battery.

[0048] A battery vehicle battery voltage detection method comprises:

[0049] The vehicle battery voltage detection system is activated;

[0050] The signal acquisition module collects the vehicle battery voltage signal;

[0051] The collected vehicle battery voltage signal is subjected to digital-to-analog conversion, signal amplification and filtering by the signal processing module to obtain a first input voltage comparison signal;

[0052] The signal output control unit controls the clock oscillator output signal unit to output a second input voltage comparison signal;

[0053] By comparing the first input voltage comparison signal with the second input voltage comparison signal through a signal analysis unit, if the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or fall below the standard range, the vehicle battery is working abnormally, otherwise the vehicle battery is working normally;

[0054] If the vehicle battery operates abnormally, the vehicle battery voltage is corrected by the signal adjustment control unit using the second input voltage comparison signal as a correction signal.

[0055] A computer device includes a memory for storing instructions and a processor for executing the instructions so that the device performs a battery vehicle battery voltage detection method.

[0056] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements a method for detecting battery voltage of a battery vehicle.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] The clock oscillator in the vehicle battery voltage detection system can output an oscillation signal with the same amplitude, phase angle and frequency as the vehicle battery voltage. By comparing the actual voltage signal generated by the vehicle battery with the standard voltage signal, it can be judged whether the battery is working normally. The most important thing is that the clock oscillator has very high accuracy and stability, is less affected by the environment, and has high reliability in battery condition detection. In addition, the clock oscillator currently has two types: fixed frequency and programmable frequency. Once the fixed frequency is formed, the frequency cannot be changed. The programmable type can change the frequency once, which saves costs. It can be programmed differently according to different batteries in different battery vehicles, and output different vehicle battery standard voltage signals. In this way, different battery voltages in the same vehicle can be calibrated and compared, and battery voltages of different vehicles can also be calibrated and compared. Moreover, the voltage signal generated by the vehicle battery is converted into an oscillation signal of a certain frequency. After amplification and filtering, it can be input into the clock oscillator. The clock oscillator converts the signal into an oscillation signal of a certain frequency. The vehicle battery voltage is corrected by the amplitude, phase angle and frequency output by the clock oscillator. If the voltage signal inside the vehicle battery is abnormal or fails, the output frequency and amplitude of the clock oscillator will also change accordingly, which can be used to judge the working status and health of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 A flowchart of a battery voltage detection method for a battery vehicle according to the present invention;

[0060] Figure 2 This is a composition diagram of a battery voltage detection system for a battery vehicle of the present invention;

[0061] Figure 3 This is a schematic diagram of a power supply circuit of a battery voltage detection system for a battery vehicle of the present invention;

[0062] Figure 4 This is a circuit schematic diagram of a voltage divider unit of a battery voltage detection system for a battery vehicle of the present invention;

[0063] Figure 5 This is a schematic diagram of a bandpass filter circuit for a battery voltage detection system of a battery vehicle of the present invention;

[0064] Figure 6 This is a circuit schematic diagram of an operational amplifier unit of a battery voltage detection system for a battery vehicle of the present invention;

[0065] Figure 7 The invention discloses a sine wave conversion circuit for a battery voltage detection system of a battery vehicle.

[0066] Figure 8 The invention discloses a clock oscillator signal module circuit of a battery voltage detection system of a battery vehicle. DETAILED DESCRIPTION

[0067] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0068] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0069] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0070] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0071] Embodiment 1:

[0072] Reference Figure 2~Figure 8 , a battery vehicle battery voltage detection system comprises:

[0073] Specifically, the vehicle battery voltage detection system is started. Figure 4The vehicle battery voltage detection system starts up and divides the battery provided by the vehicle battery through the voltage divider unit. The voltage divider unit divides the output voltage of the vehicle battery to meet the working voltage range of the vehicle battery detection system and ensures that the output voltage can be received by the subsequent operational amplifier circuit. The voltage divider R1 and R2 obtain the voltage from the battery output terminal, and the voltage on the voltage regulator tube VS is proportional to the battery terminal voltage. Finally, the vehicle battery detection system is started;

[0074] The voltage divider unit includes a vehicle battery terminal, the vehicle battery terminal outputs a voltage and inputs a voltage divider, and the vehicle battery voltage output range is adjusted by the voltage divider unit, and the adjusted voltage is used as the starting voltage of the vehicle battery detection system.

[0075] Specifically, the collected vehicle battery voltage is subjected to digital-to-analog conversion, amplification and filtering by the signal processing module to obtain a first input voltage comparison signal. It should be noted that:

[0076] The signal processing module includes a digital-to-analog conversion unit, an operational amplifier unit and a filter processing unit;

[0077] The digital-to-analog conversion unit converts the vehicle battery voltage signal collected by the sensor signal collection unit into AC and DC, and the digital-to-analog conversion unit meets the signal collection frequency requirements, referring to Figure 7 , add a sine wave converter to convert all the vehicle battery input voltage into a sine wave;

[0078] Reference Figure 6 The operational amplifier unit amplifies the vehicle battery voltage signal after AC / DC conversion. The operational amplifier circuit needs to select a suitable operational amplifier chip to ensure that the amplification factor is high enough and the parameters such as noise and drift meet the requirements.

[0079] The frequency expression of the signal amplified by the operational amplifier unit is as follows:

[0080]

[0081] Where, f is the amplified frequency, R is a 1.7kΩ resistor, C is a 2nF resistor, m is a common mode signal, and n is a differential mode signal;

[0082] Reference Figure 5 The filtering processing unit eliminates signal glitches and performs high-pass filtering on the battery voltage signal after amplification. The processed vehicle battery voltage signal is used as a first input voltage comparison signal. The first input voltage comparison signal is input into the signal analysis unit. The filtering processing unit includes a bandpass filter, a control chip and a power supply circuit.

[0083] The control chip, bandpass filter and power supply circuit in the battery circuit all use a 5V input power supply.

[0084] Specifically, the signal output control unit controls the clock oscillator output signal unit to output the second input voltage comparison signal. It should be noted that:

[0085] The signal output clock oscillator output signal unit outputs a second input voltage comparison signal;

[0086] The signal output, i.e., controlling the clock oscillator output signal unit to output a standard vehicle battery voltage signal, the vehicle battery voltage signal output by the clock oscillator output signal unit is used as a second input voltage comparison signal, and the second input voltage comparison signal is input into a signal analysis unit;

[0087] The clock oscillator output signal unit comprises a clock oscillator which emits a standard voltage signal.

[0088] The clock oscillator adopts an all-silicon design and uses industrial standard, low-cost plastic mold packaging technology. The packaging cost is less than half of that of a quartz crystal. The package size includes 7.0×5.0mm, 5.0×3.2mm, 3.2×2.5mm, 2.5×2.0mm, and can also be 2.0×1.6mm or even smaller. The diverse specifications can be used for different vehicle battery voltage detection systems. The frequency of the clock oscillator is programmable, ranging from 1~150MHz, and the wide operating voltage can work normally at any voltage of 1.8V-5.5V. This not only meets the monitoring and correction of different battery voltages in the same vehicle, but also meets the monitoring and correction of battery voltages in different vehicles.

[0089] Specifically, the first input voltage comparison signal and the second input voltage comparison signal are compared by the signal analysis unit. If the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or fall below the standard range, the vehicle battery is working abnormally, otherwise the vehicle battery is working normally. It should be noted that:

[0090] By comparing the first input voltage comparison signal with the second input voltage comparison signal through a signal analysis unit, if the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or fall below the standard range, the vehicle battery is working abnormally, otherwise the vehicle battery is working normally;

[0091] The signal analysis unit compares the first input voltage comparison signal with the second input voltage comparison signal. If the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal are all within the normal range, the vehicle battery is working normally. The vehicle battery voltage is output through the output unit. If the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or are lower than the standard range, the vehicle battery is working abnormally. The vehicle battery voltage is adjusted through the signal adjustment control unit.

[0092] Specifically, if the vehicle battery is operating abnormally, the vehicle battery voltage is corrected by the signal adjustment control unit using the second input voltage comparison signal as a correction signal. It should be noted that:

[0093] If the vehicle battery operates abnormally, the vehicle battery voltage is corrected by the signal adjustment control unit using the second input voltage comparison signal as a correction signal.

[0094] The signal adjustment control unit respectively collects the amplitude, phase angle and frequency of the first input voltage comparison signal and the amplitude, phase angle and frequency of the second input voltage comparison signal output by the clock oscillator output signal unit, and uses the standard voltage signal output by the clock oscillator output signal unit as a correction signal to simultaneously correct the amplitude, phase angle and frequency of the first input voltage comparison signal until the voltage output by the vehicle battery fluctuates within a normal range.

[0095] Specifically, normal range and abnormal operation. It should be noted that:

[0096] The normal range includes the normal working voltage of the vehicle battery, and the normal working voltage is a sinusoidal voltage whose amplitude, phase angle and frequency are all constant or float normally within the normal working range;

[0097] The operating abnormality includes that the vehicle battery voltage is an abnormal operating voltage.

[0098] Specifically, the output unit. It should be noted that:

[0099] The output unit allows the user to understand the current vehicle battery voltage status through a visual interface.

[0100] Embodiment 2:

[0101] like Figure 1 As shown, this embodiment provides a battery vehicle battery voltage detection method, including:

[0102] The vehicle battery voltage detection system is activated;

[0103] When the vehicle is started, the vehicle battery voltage detection system is powered and started;

[0104] The signal acquisition module collects the vehicle battery voltage signal;

[0105] The voltage signal output by the vehicle battery is collected in real time through the sensor;

[0106] The collected vehicle battery voltage signal is subjected to digital-to-analog conversion, signal amplification and filtering by the signal processing module to obtain a first input voltage comparison signal;

[0107] The collected vehicle battery voltage signal is input into the signal processing module, the voltage signal is converted into digital by the digital-to-analog conversion unit, the voltage signal is amplified by the operational amplifier unit, and finally the disturbance signal in the voltage signal is filtered by the filtering unit to obtain a first input voltage comparison signal;

[0108] The signal output clock oscillator output signal unit outputs a second input voltage comparison signal;

[0109] Outputting an output signal having the same amplitude, phase angle and frequency as the normal operating output voltage of the vehicle battery as a second input voltage comparison signal through a clock oscillator signal module;

[0110] By comparing the first input voltage comparison signal with the second input voltage comparison signal through a signal analysis unit, if the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or fall below the standard range, the vehicle battery is working abnormally, otherwise the vehicle battery is working normally;

[0111] If the vehicle battery operates abnormally, the vehicle battery voltage is corrected by the signal adjustment control unit using the second input voltage comparison signal as a correction signal.

[0112] The adjustment control unit receives a signal indicating abnormal operation of the vehicle battery, and uses the second input voltage comparison signal as a correction signal to timely correct the abnormal operation of the vehicle battery by controlling the output voltage of the vehicle battery.

[0113] Embodiment three:

[0114] A computer server comprises: a processor and a memory, wherein:

[0115] The memory stores a computer program that can be called by the processor;

[0116] The processor executes the above-mentioned battery vehicle battery voltage detection method in the bill transaction background by calling the computer program stored in the memory.

[0117] Embodiment 4:

[0118] A computer-readable storage medium having a rewritable computer program stored thereon;

[0119] When the computer program is executed on a computer device, the computer device executes the above-mentioned method for detecting the battery voltage of a battery vehicle.

[0120] Through this embodiment, it can be achieved that: the clock oscillator in the vehicle battery voltage detection system can output an oscillation signal with the same amplitude, phase angle and frequency as the vehicle battery voltage, and the actual voltage signal generated by the vehicle battery can be compared with the standard voltage signal to determine whether the battery is working normally. The most important thing is that the clock oscillator has very high accuracy and stability, is less affected by the environment, and has high reliability in detecting the battery condition. In addition, the voltage signal generated by the vehicle battery is converted into an oscillation signal of a certain frequency, which can be input into the clock oscillator after amplification and filtering. The clock oscillator converts the signal into an oscillation signal of a certain frequency, and the vehicle battery voltage is corrected by the amplitude, phase angle and frequency output by the clock oscillator. If the voltage signal inside the vehicle battery is abnormal or fails, the output frequency and amplitude of the clock oscillator will also change accordingly, which can be used to determine the working state and health of the battery. It has very important practical significance for improving the detection accuracy of the battery, improving the reliability of vehicle operation, and reducing the cost of later maintenance of the vehicle battery.

[0121] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0122] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0123] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0124] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A battery vehicle battery voltage detection system, characterized in that: Includes the following specific modules: A system power supply module, including a voltage divider unit for adjusting the vehicle battery input system voltage; A signal acquisition module, including a sensor signal acquisition unit for acquiring a vehicle battery voltage signal; The signal processing module includes a digital-to-analog conversion unit for performing digital-to-analog conversion on the collected vehicle battery voltage signal, amplifying the vehicle battery voltage signal after the digital-to-analog conversion through an operational amplifier unit, and filtering the amplified vehicle battery voltage signal through a filtering unit; A clock oscillator signal module, comprising a signal output control unit for controlling the output of a clock oscillator signal, and a clock oscillator output signal unit for outputting a standard voltage signal; The signal output control unit controls the clock oscillator output signal unit to output a second input voltage comparison signal; The signal output control unit controls the clock oscillator output signal unit to output a standard voltage signal, the standard voltage signal output by the clock oscillator output signal unit is used as a second input voltage comparison signal, and the second input voltage comparison signal is input into the signal analysis unit; The clock oscillator output signal unit includes a clock oscillator that emits a standard voltage signal; A signal analysis output module, including a signal analysis unit for comparing a vehicle battery voltage signal with a standard voltage signal, an adjustment control unit for correcting the amplitude, phase angle and frequency of the vehicle battery voltage signal by outputting a standard voltage signal, and outputting the current voltage condition of the vehicle battery and the vehicle battery voltage after correction and control to a visualization screen through an output unit; After receiving the processed vehicle battery voltage signal and the standard voltage signal, the signal analysis unit collects the voltage signals including the peak value, period and frequency respectively; The signal analysis unit compares the first input voltage comparison signal with the second input voltage comparison signal. If the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal are all within a normal range, the vehicle battery is working normally, and the vehicle battery voltage signal is output through the output unit. If the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or are lower than the standard range, the vehicle battery is working abnormally, and the vehicle battery voltage is adjusted through the signal adjustment control unit; Collect the first input voltage comparison signal frequency and the second input voltage comparison signal frequency, and calculate the frequency difference to determine whether the vehicle battery frequency is abnormal after processing. The frequency difference expression is as follows: ； in, is the first input voltage comparison signal frequency, is the second input voltage comparison signal frequency; The amplitudes of the first input voltage comparison signal and the second input voltage comparison signal are calculated respectively and compared. The amplitude calculation expression is as follows: ； Wherein, V is the amplitude of the first input voltage comparison signal and the second input voltage comparison signal, T is the period of the collected voltage signal, R is the resistance of the connected fixed resistor, and U is the peak value of the collected voltage signal. is the angular frequency of the collected voltage signal, t is any moment; The expression for angular frequency is as follows: ； Where, f is the frequency of the collected voltage signal; By calculating the phase angle difference between the first input voltage comparison signal and the second input voltage comparison signal at any time, it is possible to determine whether the processed vehicle battery voltage signal is within the normal range. The phase angle difference expression is as follows: ； in, is the first input voltage comparison signal period, is the second input voltage comparison signal period, It is the standard signal period of vehicle battery voltage.

2. A battery vehicle battery voltage detection system according to claim 1, characterized in that: The voltage divider unit includes a vehicle battery terminal, which provides a voltage divider for the vehicle battery. The vehicle battery terminal outputs a voltage and inputs the voltage into a voltage divider. The voltage divider unit adjusts the output range of the vehicle battery voltage, and the adjusted voltage is used as the starting voltage.

3. A battery vehicle battery voltage detection system according to claim 2, characterized in that: The collected vehicle battery voltage signal is subjected to digital-to-analog conversion, amplification processing and filtering processing by the signal processing module to obtain a first input voltage comparison signal; The digital-to-analog conversion unit converts the vehicle battery voltage signal collected by the sensor signal collection unit into AC-DC conversion; The operational amplifier unit performs signal amplification processing on the vehicle battery voltage signal after AC / DC conversion; The filtering processing unit performs signal burr elimination and high-pass filtering on the vehicle battery voltage signal after signal amplification, and the processed vehicle battery voltage signal is used as the first input voltage comparison signal, and the first input voltage comparison signal is input into the signal analysis unit.

4. A battery vehicle battery voltage detection system according to claim 3, characterized in that: The determining whether the vehicle battery frequency is abnormal after the processing includes determining the vehicle battery amplitude, phase angle and frequency; Amplitude judgment includes, if , then the car battery working voltage is normal, if or The car battery is working abnormally; Phase angle judgment includes, if , the vehicle battery is working normally. , then the vehicle battery is working abnormally; The frequency is determined based on the vehicle battery output voltage parameters. , the vehicle battery is in normal use; if , the vehicle battery is working abnormally.

5. A battery vehicle battery voltage detection system according to claim 4, characterized in that: If the vehicle battery is working abnormally, the vehicle battery voltage is corrected by the signal adjustment control unit using the second input voltage comparison signal as a correction signal; The adjustment control unit respectively collects the amplitude, phase angle and frequency of the first input voltage comparison signal and the amplitude, phase angle and frequency of the second input voltage comparison signal output by the clock oscillator output signal unit, and uses the standard voltage signal output by the clock oscillator output signal unit as a correction signal to simultaneously correct the amplitude, phase angle and frequency of the first input voltage comparison signal until the voltage output by the vehicle battery fluctuates within a normal range.

6. A battery vehicle battery voltage detection system according to claim 5, characterized in that: The normal range includes the normal working voltage of the vehicle battery, which is a sinusoidal voltage with amplitude, phase angle and frequency, all of which are fixed values ​​or float normally within the normal working range; The operating abnormality includes that the vehicle battery voltage is not at a normal operating voltage of the vehicle battery.

7. A battery vehicle battery voltage detection method, implemented based on a battery vehicle battery voltage detection system according to any one of claims 1 to 6, characterized in that: The vehicle battery voltage detection system is activated; The signal acquisition module collects the vehicle battery voltage signal; The collected vehicle battery voltage signal is subjected to digital-to-analog conversion, signal amplification and filtering by the signal processing module to obtain a first input voltage comparison signal; The signal output control unit controls the clock oscillator output signal unit to output a second input voltage comparison signal; By comparing the first input voltage comparison signal with the second input voltage comparison signal through a signal analysis unit, if the amplitude, phase angle and frequency of the first input voltage comparison signal and the second input voltage comparison signal exceed or fall below the standard range, the vehicle battery is working abnormally, otherwise the vehicle battery is working normally; If the vehicle battery operates abnormally, the vehicle battery voltage is corrected by the signal adjustment control unit using the second input voltage comparison signal as a correction signal.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for detecting battery voltage of a battery vehicle as claimed in claim 7 is implemented.

9. A controller, comprising a memory and a processor, wherein the memory is used to store a computer program, wherein: The processor is used to implement the battery vehicle battery voltage detection method described in claim 7 when executing the computer program.

Images