A kind of remote control battery charge-discharge intrinsically safe mine power supply
Patent Information
- Application Number
- CN202522134352.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-10-09
AI Technical Summary
[0003]煤矿现有的本安型矿用电源存在的技术问题是：只要本安型矿用电源接入的交流电不断电，现有的本安型矿用电源的充电电池会一直处于充电状态，而充电电池一直处于充电状态不能及时放电再充电，其寿命会很快衰减甚至损坏，一旦充电电池损坏又不能及时发现，此时万一外部交流电停电，充电电池又不能提供应用电源，使得煤矿井下瓦斯监测系统、本安型通信设备等外部电用设备因无电源输入停止工作，将会给煤矿井下带来很大的安全隐患，极易引起重大安全事故
[0009]本实用新型具有积极的效果：（1）本实用新型通过整体结构特别是电路结构的改进，能够通过上位机利用以太网、485/232等多种通信方式远程主动控制充电电池定时进行放电和再充电操作，从而能够有效解决现有技术中存在的充电电池一直处于充电状态严重缩短寿命、人工下井通过局部停电对充电电池进行放电不仅费时费力且易引发事故的技术问题。（2）本实用新型通过电路结构的改进特别是增设用于实时检测充电电池的容量、电压等参数的监测模块，监测模块的实时监测数据通过主控模块转发给上位机，使得工作人员通过上位机能够及时掌握充电电池的实时状态，从而在需要时能够及时通过上位机发送充电电池的充放电操作指令，而且一旦充电电池异常或损坏也能够及时被发现，从而有效避免现有技术中因充电电池失效不易被发现带来的引发安全事故等相关风险。
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Abstract
Description
Technical Field
[0001] This utility model relates to an intrinsically safe mining power supply for coal mines, specifically an intrinsically safe mining power supply with remotely controllable battery charging and discharging. Background Technology
[0002] Intrinsically safe mining power supplies convert AC power to DC power and are widely used in coal mines, especially underground ones. They provide DC power to external electrical equipment such as underground gas monitoring systems and intrinsically safe communication equipment. Once installed in a designated location underground, intrinsically safe mining power supplies are generally left stationary. Common intrinsically safe mining power supplies used in underground coal mines include... Figure 1 As shown, it includes an explosion-proof enclosure, an LCD screen and explosion-proof wiring pairs (such as aviation plugs) fixed on the explosion-proof enclosure, a circuit board and a rechargeable battery fixed inside the explosion-proof enclosure; the circuit board is equipped with a protection module to prevent overvoltage, overcurrent and short circuit of the AC power input terminal, an AC / DC module to convert AC power to DC power output to provide working power for external electrical equipment, a main control module for main control, and a power supply module to provide the power required for the intrinsically safe mining power supply itself; the LCD screen is electrically connected to the main control module, the protection module is electrically connected to the main control module for signal, the power input terminals of the AC / DC module and the rechargeable battery are both electrically connected to the power output terminals of the protection module, and the power output terminals of the AC / DC module and the rechargeable battery are both electrically connected to the power input terminals of external electrical equipment; the power supply module receives power from the power output terminals of the AC / DC module and the rechargeable battery and converts and outputs the power required for the intrinsically safe mining power supply itself to operate. When the intrinsically safe mining power supply is in operation, it is normally powered by AC power input from the outside of the coal mine. The AC / DC module converts the AC power into DC power to power the corresponding external electrical equipment. When the external AC power is interrupted, the rechargeable battery acts as an emergency power source to power the external electrical equipment.
[0003] The existing intrinsically safe mining power supplies in coal mines have the following technical problems: as long as the AC power supply to the intrinsically safe mining power supply is uninterrupted, the rechargeable battery of the existing intrinsically safe mining power supply will always be in a charging state. Since the rechargeable battery is always in a charging state and cannot be discharged and recharged in time, its lifespan will be quickly reduced or even damaged. Once the rechargeable battery is damaged, it will not be detected in time. If the external AC power fails, the rechargeable battery will not be able to provide power, causing the underground gas monitoring system, intrinsically safe communication equipment and other external electrical equipment to stop working due to lack of power input. This will bring great safety hazards to the underground coal mine and is very likely to cause major safety accidents. To solve this technical problem, the current method used in coal mines is for inspection personnel to partially de-energize the intrinsically safe mine power supply and manually discharge the rechargeable batteries to extend their lifespan. This method is not only time-consuming and labor-intensive, but more importantly, the AC power supply lines to the intrinsically safe mine power supply are connected to various devices such as electromechanical equipment, AC lighting, and sensors. When the partial power outage is performed to discharge the rechargeable batteries of the intrinsically safe mine power supply, the related sensors and electromechanical equipment on the same line will also stop working due to the power outage, which will lead to a series of problems such as false alarms from sensors, and in severe cases, may even cause safety accidents. Utility Model Content
[0004] The purpose of this invention is to provide an intrinsically safe mining power supply that allows for remote control of battery charging and discharging, in order to solve the problems existing in the prior art.
[0005] The technical solution of this utility model is as follows: This utility model provides an intrinsically safe mining power supply with remotely controllable battery charging and discharging, comprising an explosion-proof housing, an LCD screen and explosion-proof wiring device fixedly mounted on the explosion-proof housing, a circuit board fixedly mounted inside the explosion-proof housing, and a rechargeable battery as an emergency backup power supply; the circuit board is equipped with a protection module electrically connected to an external AC power source, an AC / DC module for converting AC power to DC power output to power external electrical equipment, a main control module for main control, and a power supply module for providing the intrinsically safe mining power supply itself with the required operating power; the LCD screen and the protection module are both electrically connected to the main control module; its structural features are: the circuit board is also equipped with a switch K, a switch control module for automatically controlling the on / off state of switch K according to the instructions of the main control module, and two communication channels for communication between the main control module and the host computer of the coal mine safety monitoring system to achieve remote control; the power input terminals of the AC / DC module and the rechargeable battery are both electrically connected to the power output terminal of the protection module through switch K.
[0006] A further solution is as follows: one of the two communication channels consists of an Ethernet chip electrically connected to the main control module on the circuit board, an isolation transformer electrically connected to the Ethernet chip, and a network terminal block on the explosion-proof enclosure for communicating between the isolation transformer and the host computer; the other communication channel consists of a communication module electrically connected to the main control module on the circuit board, an optocoupler isolation module electrically connected to the communication module, and a communication terminal block on the explosion-proof enclosure for communicating between the optocoupler module and the host computer.
[0007] A further solution is that the communication module of the other communication channel mentioned above consists of a 485 communication chip and a 232 communication chip.
[0008] A further solution is that the circuit board is also equipped with a monitoring module for real-time detection of the capacity and voltage of the rechargeable battery, and the monitoring module is electrically connected to the main control module.
[0009] This utility model has the following positive effects: (1) Through improvements to the overall structure, especially the circuit structure, this utility model enables remote active control of the rechargeable battery to perform timed discharge and recharge operations via a host computer using Ethernet, 485 / 232 and other communication methods. This effectively solves the technical problems in the prior art where the rechargeable battery is always in a charging state, which severely shortens its lifespan, and where manual discharge of the rechargeable battery by partial power outage is not only time-consuming and laborious but also prone to accidents. (2) Through improvements to the circuit structure, this utility model, especially the addition of a monitoring module for real-time detection of parameters such as capacity and voltage of the rechargeable battery, forwards the real-time monitoring data of the monitoring module to the host computer through the main control module. This allows the staff to promptly grasp the real-time status of the rechargeable battery through the host computer, and send charging and discharging operation instructions for the rechargeable battery through the host computer when needed. Moreover, any abnormality or damage to the rechargeable battery can be detected in a timely manner, thereby effectively avoiding the risks of safety accidents caused by the difficulty in detecting rechargeable battery failure in the prior art. Attached Figure Description
[0010] Figure 1 A simplified structural diagram of an intrinsically safe mining power supply in the prior art; Figure 2 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0012] (Example 1) See Figure 2The intrinsically safe mining power supply of this embodiment, which allows for remote control of battery charging and discharging, is similar to the intrinsically safe mining power supplies commonly used in coal mines in that it also includes an explosion-proof enclosure, an LCD screen and explosion-proof wiring device (such as an aviation plug) fixed on the explosion-proof enclosure, a circuit board fixed inside the explosion-proof enclosure, and a rechargeable battery as an emergency backup power supply. The circuit board is equipped with a protection module to prevent overvoltage, overcurrent, and short circuit of the AC power input terminal, an AC / DC module to convert the external AC power into DC power output to provide working power for external electrical equipment, a main control module for main control, and a power supply module to provide the power required for the intrinsically safe mining power supply itself. The LCD screen and protection module are electrically connected to the main control module, and the power output terminals of the AC / DC module and the rechargeable battery are electrically connected to the power input terminals of the external electrical equipment. The power supply module receives power from the power output terminals of the AC / DC module and the rechargeable battery and converts and outputs the power required for the intrinsically safe mining power supply to operate itself.
[0013] The intrinsically safe mining power supply of this embodiment, which allows for remote control of battery charging and discharging, is an improvement over commonly used intrinsically safe mining power supplies in coal mines in that a switch K is added to the circuit board to disconnect the AC / DC module and the rechargeable battery's AC power input. Unlike existing technologies where the power input terminals of both the AC / DC module and the rechargeable battery are electrically connected to the power output terminal of the protection module, in this embodiment, the power input terminals of both the AC / DC module and the rechargeable battery are electrically connected to the power output terminal of the protection module via switch K. In conjunction with the added switch K, a switch control module is added to the circuit board to automatically control the on / off state of switch K according to instructions from the main control module. Two communication channels were added to enable remote control between the main control module and the host computer of the coal mine safety monitoring system. One communication channel consists of an Ethernet chip electrically connected to the main control module on the circuit board, an isolation transformer electrically connected to the Ethernet chip, and network terminals on the explosion-proof enclosure for connecting the isolation transformer to the host computer. The other communication channel consists of a communication module electrically connected to the main control module on the circuit board, an optocoupler isolation module electrically connected to the communication module, and communication terminals on the explosion-proof enclosure for connecting the optocoupler module to the host computer. The communication module consists of a 485 communication chip and a 232 communication chip. The purpose of using two different communication channels is to ensure reliable communication between the host computer and the main control module on the circuit board under the harsh working conditions of an underground coal mine. After the aforementioned improvements, staff can periodically send battery discharge commands to the main control module via two communication channels through the host computer. The main control module, based on the command, opens switch K through the switch control module. At this time, neither the AC / DC module nor the rechargeable battery receives AC power input. Since the AC / DC module has no AC power input, it also has no DC power output. The rechargeable battery begins to supply power to external devices, i.e., it discharges. After the rechargeable battery has discharged for a set time, the host computer sends a reset command to the main control module. Based on the command, the main control module closes switch K again through the switch control module, restoring AC power input. The AC / DC module resumes supplying power to external devices, while the rechargeable battery returns to a charging state. This cycle continues.
[0014] In short, through the aforementioned improvements, the host computer can reliably and remotely discharge the rechargeable battery periodically, thus solving the technical problems in the existing technology where the rechargeable battery is always in a charging state, which severely shortens its lifespan, and where manually discharging the rechargeable battery by going down into the well through partial power outages is not only time-consuming and laborious, but also prone to causing accidents.
[0015] As a preferred embodiment, the intrinsically safe mining power supply with remotely controllable battery charging and discharging further improves upon existing intrinsically safe mining power supplies commonly used in coal mines by adding a monitoring module on the circuit board for real-time detection of parameters such as battery capacity and voltage. The real-time monitoring data from this module is forwarded to the host computer via the main control module, allowing operators to promptly grasp the real-time status of the battery. This brings two beneficial technical effects: First, compared to the aforementioned periodic battery discharge operation, operators can decide whether to perform a discharge operation based on the real-time status of the battery, resulting in better timeliness and effectively preventing overcharging and over-discharging. Second, any battery malfunction or damage can be detected promptly, effectively avoiding the risks of safety accidents caused by the difficulty in detecting battery malfunctions or damage in existing technologies.
[0016] It should be noted that the structure and working principle of the aforementioned improved and added switch K, switch control module, two communication channels and monitoring module are all mature existing technologies, and will not be described in detail in this embodiment.
[0017] The above embodiments are descriptions of specific implementations of this utility model, and not limitations thereof. Those skilled in the art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should be included in the patent protection scope of this utility model.
Claims
1. An intrinsically safe mining power supply with remotely controllable battery charging and discharging, comprising an explosion-proof housing, an LCD screen and an explosion-proof wiring device fixedly mounted on the explosion-proof housing, a circuit board fixedly mounted inside the explosion-proof housing, and a rechargeable battery as an emergency backup power supply; the circuit board is provided with a protection module electrically connected to an external AC power source, an AC / DC module for converting AC power to DC power output to power external electrical equipment, a main control module for main control, and a power supply module for providing the intrinsically safe mining power supply itself with the required operating power; the LCD screen and the protection module are both electrically connected to the main control module; characterized in that: The circuit board is also equipped with a switch K, a switch control module for automatically controlling the on and off of switch K according to the instructions of the main control module, and two communication channels for communication between the main control module and the host computer of the coal mine safety monitoring system to realize remote control; the power input terminals of the AC / DC module and the rechargeable battery are electrically connected to the power output terminal of the protection module through switch K.
2. The intrinsically safe mining power supply with remotely controllable battery charging and discharging as described in claim 1, characterized in that: One of the two communication channels consists of an Ethernet chip electrically connected to the main control module on a circuit board, an isolation transformer electrically connected to the Ethernet chip, and a network terminal block on an explosion-proof enclosure for communicating between the isolation transformer and the host computer. The other communication channel consists of a communication module electrically connected to the main control module on a circuit board, an optocoupler isolation module electrically connected to the communication module, and a communication terminal block on an explosion-proof enclosure for communicating between the optocoupler module and the host computer.
3. The intrinsically safe mining power supply with remotely controllable battery charging and discharging as described in claim 2, characterized in that: The communication module of the other communication channel consists of a 485 communication chip and a 232 communication chip.
4. The intrinsically safe mining power supply with remotely controllable battery charging and discharging as described in claim 1, characterized in that: The circuit board is also equipped with a monitoring module for real-time detection of the capacity and voltage of the rechargeable battery, and the monitoring module is electrically connected to the main control module.