Intelligent early warning device for battery power shortage and vehicle

Abstract

The utility model relates to the technical field of battery state monitoring, especially to a battery power shortage intelligent early warning device and vehicle, and the device comprises: main control module, voltage sampling module and communication module, the voltage sampling module is connected to the battery, is used for collecting the voltage signal of battery. The battery power shortage intelligent early warning device provided in the application adopts the voltage sampling module to directly connect the battery, compares and judges with the preset threshold value by the real -time processing voltage signal of main control module, when detecting the power shortage risk, through wireless communication module, the early warning information containing vehicle identification and voltage value is pushed to the remote management platform based on instant messaging tool, through the organic combination of hardware architecture and software logic, the intelligent remote early warning to the battery power shortage state has been realized.

Description

Technical Field

[0001] This utility model relates to the field of battery status monitoring technology, and in particular to an intelligent early warning device for battery depletion and a vehicle. Background Technology

[0002] With the increasing electrification and intelligence of automobiles, the number of various electronic control units in vehicles has increased significantly, leading to higher static power consumption. This places higher demands on the capacity and management of vehicle batteries. Especially for commercial vehicles (such as light trucks) using 24V battery platforms, during long-term parking, the battery voltage will continuously drop due to self-discharge and static current consumption by onboard electronic devices, posing a risk of failure to start due to low battery. This phenomenon is particularly prominent in operational scenarios such as logistics fleets that require the management of a large number of vehicles.

[0003] Currently, conventional solutions to battery depletion problems mainly rely on periodic on-site manual inspections or post-discharge jump-starts and battery replacements. The former is inefficient and cannot achieve real-time monitoring, while the latter results in high economic losses, including hundreds of yuan in rescue fees per incident and potentially thousands of yuan in battery pack replacement costs. Furthermore, while some existing hardware-based local alarm devices exist, their functionality is limited to audible and visual alarms, lacking remote information push capabilities, and most require integration into the vehicle's existing control system, leading to complex installation and limited applicability.

[0004] Therefore, there is an urgent need in this field for a low-cost, easy-to-deploy battery monitoring solution that can provide remote intelligent early warnings, so as to issue timely warnings to managers before the battery voltage drops to the critical point, thereby avoiding operational interruptions and economic losses caused by the inability to start the vehicle. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an intelligent early warning device for battery depletion, comprising: a main control module, a voltage sampling module, and a communication module; The voltage sampling module is connected to the battery to collect the battery's voltage signal; The main control module is used to receive the battery voltage signal and generate an alarm command when it determines that the battery voltage is lower than a preset threshold. The communication module is connected to the main control module and is used to send alarm commands to remote social platforms in the form of early warning information.

[0006] In conjunction with the first aspect, the voltage sampling module is a voltage divider circuit, which includes a first resistor and a second resistor. The first resistor and the second resistor are connected in series and then in parallel between the positive and negative terminals of the battery. The main control module reads the voltage signal from the common connection point of the first resistor and the second resistor.

[0007] In conjunction with the first aspect, the main control module is the ESP32-C3 chip.

[0008] In conjunction with the first aspect, the resistance of the first resistor is greater than the resistance of the second resistor.

[0009] In conjunction with the first aspect, the early warning information includes at least one of the following: alarm time, equipment identification information, and real-time voltage value.

[0010] In conjunction with the first aspect, the device also includes a separate power supply module for converting the battery voltage to the operating voltage required by the main control module and the communication module.

[0011] In conjunction with the first aspect, the device directly connects to the positive and negative terminals of the battery via a wiring harness to obtain power and sample voltage.

[0012] In conjunction with the first aspect, the communication module is a Wi-Fi module.

[0013] Secondly, this application also provides a vehicle equipped with the aforementioned intelligent early warning device for low battery power.

[0014] In conjunction with the second aspect, the vehicle adopts a 24V battery platform.

[0015] This application provides a battery low-power intelligent early warning device and a vehicle. The battery low-power intelligent early warning device includes: a main control module, a voltage sampling module, and a communication module; the voltage sampling module is connected to the battery and is used to collect the battery voltage signal; the main control module is used to receive the battery voltage signal and generate an alarm command when it determines that the battery voltage is lower than a preset threshold; the communication module is connected to the main control module and is used to send the alarm command to a remote social platform in the form of early warning information.

[0016] The intelligent early warning device for low battery power provided in this application uses a voltage sampling module directly connected to the battery. The main control module processes the voltage signal in real time and compares it with a preset threshold. When a risk of low battery power is detected, the device pushes early warning information containing vehicle identification and voltage value to a remote management platform based on instant messaging tools through a wireless communication module. Through the organic combination of hardware architecture and software logic, intelligent remote early warning of low battery power status is realized.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of signal transmission in the intelligent early warning device for low battery power provided in the embodiments of this application; Figure 2 A schematic diagram of the intelligent early warning device for low battery power provided in the application embodiment.

[0021] Figure label: 1-Voltage sampling module, 2-Main control module, 3-Communication module, 4-Battery. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] To facilitate understanding of this embodiment, the application scenarios and design concepts of this application embodiment will be briefly introduced below.

[0024] The increasing electrification of automobiles exacerbates the static power consumption of batteries, posing a risk of battery depletion when vehicles are parked for extended periods. Current detection methods rely on manual intervention or local alarms, lacking remote early warning capabilities, resulting in high costs for roadside assistance and replacement.

[0025] Based on this, this application provides a battery low-power intelligent early warning device and vehicle, which monitors the battery voltage in real time through Internet of Things technology, and sends early warning information to a remote platform through wireless communication when the voltage is lower than a threshold, thereby achieving low-cost and intelligent remote early warning.

[0026] Example 1 In view of this, the purpose of this utility model is to provide a smart early warning device for low battery power, including: a main control module 2, a voltage sampling module 1 and a communication module 3.

[0027] Voltage sampling module 1 is connected to battery 4 and is used to collect the voltage signal of battery 4; The main control module 2 is used to receive the voltage signal of the battery 4 and generate an alarm command when it determines that the voltage of the battery 4 is lower than a preset threshold.

[0028] The communication module 3 is connected to the main control module 2 and is used to send alarm commands to the remote social platform in the form of early warning information.

[0029] Combination Figure 1 , Figure 2 As shown, the voltage sampling module 1 is responsible for collecting the voltage across the two ends of the battery 4 in real time. It is directly connected to the battery 4 and converts the high voltage (such as 0-36V) into a range that can be safely processed by subsequent modules.

[0030] The main control module 2 has a preset low-power alarm threshold (e.g., 21.5V). It continuously compares the sampled voltage with the threshold. Once it determines that the voltage is lower than the threshold, it means that the battery 4 is about to run out of power, and immediately generates a digital alarm command.

[0031] Communication module 3 is integrated with the main control module and is responsible for encapsulating the alarm commands from the main control module into network requests and sending them to remote social platforms (such as the interface of WeChat robot) via wireless network.

[0032] In this embodiment, after the above-mentioned device is powered on, as follows: Figure 1 As shown, voltage sampling module 1 continuously monitors the voltage of battery 4, while main control module 2 continuously makes judgments. When a power depletion event is triggered, an alarm command is sent to a remote social platform via communication module 3 and ultimately pushed to the mobile terminal of the management personnel in real time. This allows management personnel to grasp the vehicle's battery status immediately, regardless of their location, and take timely measures to replenish the battery, effectively avoiding the predicament of "the vehicle is parked and the person is away, and the power depletion is unknown" under traditional methods, as well as the high costs of rescue and battery replacement afterward.

[0033] In conjunction with the first aspect, voltage sampling module 1 is a voltage divider circuit, which includes a first resistor (in conjunction with...). Figure 1 R1) and the second resistor (combined) Figure 1 R2), the first resistor and the second resistor are connected in series and then in parallel between the positive and negative terminals of the battery. The main control module 2 reads the voltage signal from the common connection point of the first resistor and the second resistor.

[0034] In this embodiment, the voltage sampling module 1 is a voltage divider circuit, which consists of only two standard resistors. It does not require a dedicated voltage sensing chip or a complex signal conditioning circuit, resulting in lower cost. This significantly reduces the material cost of a single set of equipment for fleet applications that require large-scale deployment.

[0035] Combination Figure 2As shown, since resistors R1 and R2 are connected in series, the current I flowing through them is the same. The total voltage V of the battery is equal to the sum of the voltages across the two resistors, that is, V = V1 + V2, where V1 is the voltage value obtained by the first resistor R1 and V2 is the voltage value obtained by the second resistor R2.

[0036] According to Ohm's law V=IR, and the current I=V÷(R1+R2), the voltage divider formula is obtained: V ADC = V÷(R1+R2)×R2; V ADC The voltage value of the analog-to-digital converter (ADC) pin of the main control module 2 connected to the common connection point of the first resistor (R1) and the second resistor (R2) to the negative terminal of the battery 4 is combined with... Figure 2 This value is collected by the detection module.

[0037] Therefore, when V is detected ADC Given R1 and R2, the voltage V of battery 4 can be calculated.

[0038] Understandably, by selecting an appropriate resistor ratio, this voltage divider circuit can linearly convert the wide voltage range of battery 4 (e.g., 0-36V) to a lower voltage range (e.g., 0-3.3V) suitable for processing by the main control module 2. This design ensures both the accuracy of voltage sampling and protects the input port of the main control module 2 from overvoltage damage. The voltage divider circuit performs a linear proportional transformation on the input voltage (battery 4 voltage), maintaining a strict linear relationship between its output and input. This allows the main control module 2 to accurately reconstruct the actual voltage value of the battery through simple multiplication operations, resulting in a simple algorithm and low computational burden.

[0039] In terms of electrical safety, a series design using high-resistance resistors (such as 100KΩ and 10KΩ) limits the current input to the ADC pin of the main control module 2 to the microampere level. Even if abnormal high voltage occurs at the front end, it can effectively protect the main control chip from damage. This design achieves a safe interface between different voltage domains. Furthermore, resistors are passive components with stable performance, long lifespan, and relatively low susceptibility to temperature and environmental changes. This simple circuit structure means fewer points of failure, improving the long-term operational reliability of the entire monitoring system under the complex electromagnetic environment and vibration conditions of the vehicle.

[0040] This voltage divider circuit perfectly meets the core requirements of this invention for "low cost, easy deployment, and high reliability," and is a key technical means to achieve economical and effective monitoring of battery voltage. In contrast, the solution using a dedicated voltage detection chip is more expensive, while other complex circuits introduce unnecessary reliability and design complexity issues.

[0041] In conjunction with the first aspect, the main control module 2 is an ESP32-C3 chip.

[0042] In this embodiment, the main control module 2 uses the ESP32-C3 chip. The ESP32-C3 is a highly integrated IoT chip based on a 32-bit RISC-V processor, integrating Wi-Fi wireless communication, an analog-to-digital converter (ADC), and rich peripheral interfaces, providing an ideal single-chip solution for battery voltage monitoring. The chip's high integration significantly simplifies peripheral circuit design, eliminating the need for an external independent communication module to build a complete monitoring node, effectively reducing system complexity and material costs. Its built-in high-precision ADC accurately acquires voltage signals from the voltage divider circuit. Combined with powerful processing capabilities, it can perform real-time comparisons of voltage values ​​with preset thresholds, ensuring accurate warnings. Simultaneously, the software platform based on this chip supports flexible configuration of alarm thresholds, sampling frequencies, and other parameters, enabling the device to adapt to different vehicle models and battery specifications. Furthermore, the ESP32-C3 supports multiple low-power operating modes, allowing for the configuration of corresponding power consumption strategies according to monitoring needs, effectively reducing the device's own consumption of battery power and avoiding the risk of battery depletion due to power consumption by the monitoring equipment. The chip's integrated Wi-Fi module also provides stable network connectivity, ensuring that alarm information can be reliably transmitted to remote management platforms such as WeChat for businesses.

[0043] Using the ESP32-C3 chip as the main control module 2 achieves an optimal balance between performance, cost, and power consumption, making it a key choice for this device to achieve low-cost, high-reliability intelligent early warning.

[0044] In conjunction with the first aspect, the resistance of the first resistor is greater than the resistance of the second resistor.

[0045] In a preferred embodiment of this invention, the resistance value of the first resistor in the voltage divider circuit is set to be greater than that of the second resistor. By placing the high-resistance first resistor near the positive terminal of the battery 4 and the lower-resistance second resistor near the negative terminal, a reliable level transition is achieved, safely reducing the higher operating voltage of the battery 4 to the acceptable level range of the main control module 2. This configuration not only effectively limits the total current of the circuit through the high-resistance resistor, keeping the power consumption of the voltage divider circuit itself at the microamp level and avoiding significant consumption of battery 4 power by the monitoring device, but also reduces measurement errors caused by resistor self-heating, ensuring voltage sampling accuracy. Furthermore, this resistor configuration also provides an important overvoltage protection function. When the voltage of the battery 4 rises abnormally, the high-resistance first resistor can effectively limit the current flowing into the main control module 2, providing an additional protection barrier for the main control chip. By precisely configuring the resistance ratio of the two resistors, this invention achieves an optimal balance between electrical safety, measurement accuracy, and system power consumption.

[0046] In this embodiment, the first resistor has a resistance of 100KΩ and the second resistor has a resistance of 10KΩ.

[0047] According to the voltage divider formula V ADC =V×10÷(10+100), it can be seen that the voltage of battery 4 is reduced to about 1 / 11 of its original value before being supplied to the main control module 2. Thus, the main control module 2 only needs to provide the read V... ADC Multiplying the value by 11 will restore the voltage value of battery 4.

[0048] In conjunction with the first aspect, the early warning information includes at least one of the following: alarm time, equipment identification information, and real-time voltage value.

[0049] The alarm time included in the warning information provides a specific timestamp of the voltage anomaly, enabling managers to accurately grasp the time point of battery status changes; the equipment identification information can uniquely distinguish the ownership of different vehicles or batteries, achieving accurate fault location and responsibility tracing; the real-time voltage value objectively reflects the actual voltage status when the alarm is triggered, providing direct data support for judging the severity of power loss and taking corresponding measures.

[0050] This modular information composition design ensures both the necessary information completeness and the conciseness of the warning information. The combined use of the three types of information forms a complete event recording chain, providing valuable operational data for fleet management. Furthermore, the use of the phrase "at least one" provides flexibility for the implementation of this invention, allowing it to adapt to the information reporting needs of different application scenarios, such as including only equipment identification information, or including all three types of information mentioned above.

[0051] This information structure makes full use of the display characteristics of existing communication platforms, presenting key monitoring data to users in a structured manner, significantly improving the practicality and operability of early warning information, and reflecting the human-centered considerations of this utility model in information design.

[0052] In addition to the first aspect, the device also includes a separate power supply module for converting the battery voltage to the operating voltage required by the main control module and the communication module.

[0053] In this embodiment, the power supply unit can employ a linear regulated power supply (such as a low-dropout linear regulator) or a switching power supply module (such as a DC-DC switching regulator circuit). Preferably, a power supply with a wide input voltage range (e.g., 6-36V), high conversion efficiency, and high integration is used to ensure stable operation within the voltage fluctuation range of the battery and to meet the special requirements of the vehicle environment regarding temperature and vibration. The specific selection of the power supply module needs to comprehensively consider factors such as cost, efficiency, reliability, and installation space to achieve the best technical and economic balance. This is merely an example and not a limitation.

[0054] An independent power supply module can safely and stably convert the higher DC voltage (such as 24V or 12V) of battery 4 to the lower operating voltage (such as 3.3V or 5V) required by the main control module 2, ensuring the normal operation of the main control module 2 and the communication module. Secondly, this independent power supply design enhances the protection of the main control module 2. Through electrical isolation and filtering during the voltage conversion process, it effectively suppresses damage to sensitive electronic components caused by voltage fluctuations, spike interference, and other adverse factors that may exist in the battery system.

[0055] In conjunction with the first aspect, the device directly connects to the positive and negative terminals of the storage battery 4 via a wiring harness to obtain power and sample voltage.

[0056] In this embodiment, the power supply and signal acquisition requirements of the device are met using only a wiring harness (two power cables), greatly simplifying the installation process and keeping the installation time extremely short. Secondly, this direct connection method ensures that the device is a completely independent system unit, independent of any existing electronic control system of the vehicle, and does not require connection to the CAN bus or other vehicle networks, fundamentally avoiding vehicle system compatibility risks or warranty disputes that may arise from adding monitoring equipment.

[0057] In conjunction with the first aspect, the communication module is a Wi-Fi module.

[0058] In this embodiment, a Wi-Fi module is used to fully utilize the fact that modern vehicles are often within Wi-Fi network coverage. Compared to traditional cellular mobile network (such as 4G / 5G) modules, Wi-Fi modules do not require a SIM card and do not incur subsequent data charges, significantly reducing the long-term operating costs of the device. Simultaneously, the Wi-Fi module provides a stable local network connection, ensuring that alarm information is transmitted to the cloud management platform in a timely and reliable manner.

[0059] Understandably, the Wi-Fi module can be highly integrated with the main control module. For example, using a main control chip like the ESP32-C3, which inherently integrates Wi-Fi functionality, further simplifies hardware design, reduces the number of peripheral components, and improves system reliability. This integrated setup also brings advantages in power consumption; the Wi-Fi module can enter a low-power mode during data transmission gaps, effectively controlling the overall system energy consumption.

[0060] Furthermore, the Wi-Fi module supports seamless integration with mainstream cloud services such as WeChat Work, enabling data reporting via standard HTTP / HTTPS protocols without requiring additional protocol conversions or complex network configurations. This communication solution satisfies the need for real-time alerts while ensuring the system's ease of use and maintainability.

[0061] Secondly, this application also provides a vehicle equipped with the aforementioned intelligent early warning device for low battery power.

[0062] The intelligent early warning device for low battery power of this invention is applied to a vehicle. The device is directly connected to the positive and negative terminals of the vehicle's battery 4 through a wiring harness. Without changing the original circuit structure of the vehicle, it realizes real-time monitoring and intelligent early warning of the battery status.

[0063] When the voltage of battery 4 drops to a preset threshold, the device immediately sends a warning message to a remote management platform such as WeChat via Wi-Fi, enabling vehicle management personnel to receive the alarm information immediately. This proactive warning mechanism effectively avoids the problem of vehicles failing to start due to a depleted battery 4, which is common in traditional methods. It is particularly suitable for applications such as logistics vehicles and rental vehicles that require long-term parking.

[0064] In conjunction with the second aspect, the vehicle adopts a 24V battery platform.

[0065] Understandably, 24V battery platforms, as a typical configuration for commercial vehicles, especially light trucks, have unique monitoring requirements: on the one hand, the dual-cell series structure of the 24V system makes the aging of individual cells more concealed; on the other hand, the operating voltage range of the system (approximately 28.8V when fully charged, and approximately 20V at the critical point of depletion) places specific demands on the voltage sampling range of the intelligent early warning device for battery depletion. Applying the aforementioned device to vehicles with 24V battery platforms effectively solves the problem of battery depletion during long-term parking, which is beneficial to improving the effectiveness of vehicle management in logistics transportation, commercial distribution, and other fields.

[0066] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0067] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0068] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this utility model, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this utility model. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0069] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A smart early warning device for low battery power, characterized in that, include: Main control module, voltage sampling module, and communication module; The voltage sampling module is connected to the battery and is used to collect the battery's voltage signal. The main control module is used to receive the voltage signal of the battery and generate an alarm command when it determines that the battery voltage is lower than a preset threshold. The communication module is connected to the main control module and is used to send the alarm command to the remote social platform in the form of early warning information.

2. The apparatus according to claim 1, characterized in that, The voltage sampling module is a voltage divider circuit, which includes a first resistor and a second resistor. The first resistor and the second resistor are connected in series and then in parallel between the positive and negative terminals of the battery. The main control module reads the voltage signal from the common connection point of the first resistor and the second resistor.

3. The apparatus according to claim 1, characterized in that, The main control module is an ESP32-C3 chip.

4. The apparatus according to claim 2, characterized in that, The resistance of the first resistor is greater than the resistance of the second resistor.

5. The apparatus according to claim 1, characterized in that, The warning information includes at least one of the following: alarm time, device identification information, and real-time voltage value.

6. The apparatus according to claim 1, characterized in that, The device also includes a separate power supply module for converting the battery voltage to the operating voltage required by the main control module and the communication module.

7. The apparatus according to claim 1, characterized in that, The device draws power and samples voltage directly from the positive and negative terminals of the battery via a wiring harness.

8. The apparatus according to claim 1, characterized in that, The communication module is a Wi-Fi module.

9. A vehicle, characterized in that, The battery is equipped with an intelligent early warning device for low battery power as described in any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that, The vehicle uses a 24V battery platform.

Images