Early warning system for monitoring electricity exhaustion of constant-voltage discharge battery

Abstract

The utility model relates to an early warning system for monitoring electric quantity exhaustion of a constant-voltage discharge battery, which comprises a battery to be detected, a follow current battery, a diode, a power supply combining module, a voltage acquisition module, a load module, a singlechip and an early warning signal output module, the tested battery and the follow current battery are rectified through a low-conduction voltage drop diode to form a power supply combining module, the power supply combining module is connected with the load module in series, the voltage acquisition module is connected with an output circuit of the power supply combining module in parallel, and the voltage acquisition module is connected with the single-chip microcomputer in series. The single-chip microcomputer is connected in series with the follow current battery and the early warning signal output module. According to the utility model, electric quantity monitoring and early warning are realized through a simple and effective circuit, the battery is ensured to be replaced in time, the operation risk caused by power failure of the equipment battery can be reduced, and the maintainability of the equipment battery is realized at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an early warning system for monitoring the exhaustion of the power of a constant-voltage discharge battery. Background Technique

[0002] A constant-voltage discharge battery refers to a battery that can maintain a relatively stable output voltage during the discharge process. Compared with ordinary batteries, the constant-voltage battery is designed to ensure that the output voltage does not decrease significantly as the remaining battery power decreases, which is very important in some specific applications, such as electronic devices, LED lighting, medical devices, etc. that require a stable voltage supply.

[0003] Figure 2 For a certain constant-voltage battery, as can be seen from Figure 2 it, the battery has excellent performance and can maintain constant-voltage discharge. However, when the power is about to run out, the battery voltage drops steeply, which brings difficulties to monitoring the remaining battery power through voltage, that is, it cannot give an early warning of the exhaustion of the battery power in time. When the sign of the battery voltage drop is found, there is not enough time to replace the battery, which will cause abnormal power-off of the device and bring risks to the operation of devices that need to work continuously. Summary of the Invention

[0004] The utility model aims to solve the problem that the early warning of the exhaustion of the power of a constant-voltage discharge battery through voltage monitoring in the prior art is not timely, which leads to abnormal power-off of the device, and provides an early warning system for monitoring the exhaustion of the power of a constant-voltage discharge battery.

[0005] The utility model adopts the following technical solutions to achieve the above object: an early warning system for monitoring the exhaustion of the power of a constant-voltage discharge battery, including a battery under test, a current-limiting battery, a diode, a power supply combining module, a voltage acquisition module, a load module, a single-chip microcomputer, and an early warning signal output module. Both the battery under test and the current-limiting battery are rectified through a diode with a low conduction voltage drop to form a power supply combining module. The power supply combining module and the load module are connected in series, and the voltage acquisition module is connected in parallel with the output circuit of the power supply combination. The voltage acquisition module and the single-chip microcomputer are connected in series, and the single-chip microcomputer is respectively connected in series with the current-limiting battery and the early warning signal output module.

[0006] Specifically, the voltage of the battery under test is higher than the voltage of the current-limiting battery.

[0007] Specifically, the voltage of the battery under test is 3.6V, and the voltage of the current-limiting battery is 3V.

[0008] Specifically, the early warning signal output module is externally connected to one of an audible and visual alarm, a warning bell, an indicator light, a display screen, and a voice broadcast system.

[0009] The beneficial effects of the present utility model are as follows: By providing a freewheeling battery, a power combining module, a voltage acquisition module, a single-chip microcomputer, and an early warning signal output module, when the power of the battery under test is about to be exhausted, the freewheeling battery maintains the normal operation of the load for a period of time, and the single-chip microcomputer issues an early warning signal, providing an operation time for replacing the battery; through a simple and effective circuit, power monitoring and early warning are realized, ensuring that the battery is replaced in a timely manner, reducing the operation risk caused by the power loss of the equipment battery, and at the same time realizing the maintainability of the equipment battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of the system of the present utility model;

[0011] Figure 2 It is a schematic diagram of voltage monitoring during the discharge process of a certain constant voltage battery;

[0012] In the figure: 1 - battery under test; 2 - freewheeling battery; 3 - diode; 4 - power combining module; 5 - voltage acquisition module; 6 - load module; 7 - single-chip microcomputer; 8 - early warning signal output module;

[0013] The following will be described in detail with reference to the embodiments of the present utility model and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present utility model will be further described below with reference to the accompanying drawings and embodiments:

[0015] As Figure 1 shown, an early warning system for monitoring the exhaustion of the power of a constant voltage discharge battery includes a battery under test 1, a freewheeling battery 2, a diode 3, a power combining module 4, a voltage acquisition module 5, a load module 6, a single-chip microcomputer 7, and an early warning signal output module 8. The battery under test 1 and the freewheeling battery 2 both achieve rectification through a diode 3 with a low conduction voltage drop to form a power combining module 4. The power combining module 4 and the load module 6 are connected in series, and the voltage acquisition module 5 is connected in parallel with the output circuit of the power combining module 4. The voltage acquisition module 5 and the single-chip microcomputer 7 are connected in series, and the single-chip microcomputer 7 is respectively connected in series with the freewheeling battery 2 and the early warning signal output module 8.

[0016] The voltage of the battery under test 1 is higher than the voltage of the freewheeling battery 2.

[0017] The voltage of the battery under test 1 is 3.6V, and the voltage of the freewheeling battery 2 is 3V.

[0018] The early warning signal output module 8 is externally connected to one of an audible and visual alarm, a warning bell, an indicator light, a display screen, and a voice broadcast system.

[0019] When the utility model is working, the tested battery 1 and the freewheeling battery 2 are combined with the rectified power supply through the diode 3 with low conduction voltage drop. Because the 3.6V of the tested battery is higher than the 3V of the freewheeling battery, the load module 6 consumes the power of the tested battery 1 at this time. When the power of the tested battery 1 is about to be exhausted and the voltage drops sharply, the time from the detection of voltage abnormality to the exhaustion of battery power in the ordinary monitoring system is very short, and there is basically no time to replace the battery. In this early warning system, the voltage of the tested battery 1 drops sharply. When the voltage of the tested battery 1 drops below the voltage of the freewheeling battery 2, the load module 6 uses the freewheeling battery 2 for power supply and no longer consumes the power of the tested battery 1. That is, the freewheeling battery 2 clamps the combined voltage at the real-time voltage of the freewheeling battery 2. At this time, the power supply of the load module 6 is normal and does not affect its operation. The single-chip microcomputer 7 detects that the voltage at the collection point is lower than the normal voltage of the tested battery 1, and can issue a warning message.

[0020] The power of the tested battery 1 is about to run out, and the freewheeling battery 2 maintains the load to continue to work normally for a period of time. The microcontroller 7 (the STMicroelectronics STM32F1 series can be selected, and the specific model can be STM32F103C8T6) sends out an early warning signal to provide operation time for battery replacement. After replacing the new tested battery 1, because the voltage of the new tested battery 1 is 3.6V, which is higher than the voltage of the freewheeling battery 2 by 3V, the load module 6 restores the power supply of the tested battery 1.

[0021] The utility model realizes a leap in battery maintainability at a low cost, is simple and practical, and has obvious advantages. The early warning system solves the problem of abnormal power outage of equipment caused by untimely replacement of batteries for constant voltage discharge batteries and the maintainability of equipment batteries. The early warning system can realize the work of timely and accurate battery replacement of equipment.

[0022] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An early warning system for monitoring the power depletion of a constant voltage discharge battery, characterized in that, It includes a battery under test (1), a freewheeling battery (2), a diode (3), a power combining module (4), a voltage acquisition module (5), a load module (6), a single-chip microcomputer (7), and an early warning signal output module (8). The battery under test (1) and the freewheeling battery (2) both achieve rectification through the diode (3) with a low conduction voltage drop to form the power combining module (4). The power combining module (4) and the load module (6) are connected in series, and the voltage acquisition module (5) is connected in parallel with the output circuit of the power combining module (4). The voltage acquisition module (5) and the single-chip microcomputer (7) are connected in series, and the single-chip microcomputer (7) is respectively connected in series with the freewheeling battery (2) and the early warning signal output module (8).

2. The early warning system for monitoring the exhaustion of the constant voltage discharge battery according to claim 1, wherein, The voltage of the battery under test (1) is higher than the voltage of the freewheeling battery (2).

3. An early warning system for monitoring the depletion of the power of a constant voltage discharge battery according to claim 2, characterized in that, The voltage of the battery under test (1) is 3.6V, and the voltage of the freewheeling battery (2) is 3V.

4. The early warning system for monitoring the exhaustion of the constant voltage discharge battery according to claim 3, wherein, The early warning signal output module (8) is externally connected to one of an audible and visual alarm, a warning bell, an indicator light, a display screen, and a voice broadcast system.

Images