A flameproof power supply device for mines

Abstract

The invention provides a flameproof power supply device for mining, comprising: an inner tank body, in which a lithium-ion battery pack is placed, and a sealing interface is provided; an inner tank cover, which seals the lithium-ion battery pack in the inner tank body; a sealing member, which is located between the inner tank body and the inner tank cover, so that a waterproof and dustproof closed space of IP67 or above is formed in the inner tank body; a flameproof box, on which an electrical component for controlling and connecting the inner tank body is installed and fixed to manage and control the lithium-ion battery pack, and a connecting line for connecting the sealing interface with the electrical component is provided, and a wiring port for an external interface is also provided on the box body; a fire extinguishing detector, a fire extinguishing device and a fire extinguishing controller form an automatic fire extinguishing system, which can timely report and suppress a fire; and a system control box, which can coordinate a plurality of power boxes to work in series and parallel, so as to achieve a battery system with a higher voltage and a larger power.

Description

Technical Field

[0001] A flameproof power supply device for mines Background Art

[0002] At present, most of my country's underground transportation equipment for mines uses flameproof diesel locomotives, and only a few use imported flameproof battery vehicles. With the application of a large number of flameproof diesel locomotives in mines, harmful gases and noise are seriously exceeded, which poses a hazard to the occupational health of underground personnel. Therefore, the electrification of underground transportation equipment for mines is imperative, and mine flameproof power supplies are particularly important as the power source of vehicles. At the same time, the working environment in mines is very harsh, and the surroundings are often filled with flammable gases or flammable dust. Therefore, mine power supplies must take perfect flameproof measures. At present, the power boxes designed by the industry are basically required to meet 1 .5MPa or above explosion-proof performance; but since mines are usually high-humidity and dusty environments, ordinary explosion-proof power supply boxes do not have dust and water-proof functions; ordinary explosion-proof power supply boxes used in high-humidity and dusty environments may cause: 1. Condensation or water ingress in the power supply box will accelerate the corrosion and aging of internal high-voltage connections and metal structural parts, causing insulation performance degradation or even high-voltage ignition or failure of electronic components, ultimately leading to battery system failure or even fire and explosion; 2. Dust enters the power supply box and deposits on the battery cells, corroding and aging the metal structural parts of the battery cells, increasing resistance, and causing severe heat, resulting in high battery system temperatures and even fire and explosion; if a fire and explosion occurs, although there is protection from the explosion-proof box, there is also the possibility of leakage, which will cause damage to other equipment underground and affect the safety of underground equipment and personnel. Summary of the invention

[0003] The purpose of the present invention is to provide a mine flameproof power supply device to solve the demand for electrification of mine underground transportation equipment proposed in the background technology and the resulting insulation safety protection and fire and explosion problems, thereby improving the underground air environment quality and the safety of mine flameproof power supplies.

[0004] The present invention adopts the following technical solutions:

[0005] A flameproof power supply device for mining comprises: an inner tank body, in which a lithium-ion battery pack is placed, and a sealing interface is provided; an inner tank cover, which seals the lithium-ion battery pack in the inner tank body; a sealing member, which is located between the inner tank body and the inner tank cover, so that a waterproof and dustproof enclosed space of IP67 or above is formed in the inner tank body; a flameproof box, in which the inner tank body and the inner tank cover are fixedly installed, and an electrical component for controlling and connecting the inner tank body to manage and control the lithium-ion battery pack, as well as a connecting line for connecting the sealing interface with the electrical component are fixedly installed, and a wiring port for an external interface is also provided on the box body; the flameproof box cover is used to close the flameproof box; a fire extinguishing detector is placed in the inner tank body, and is used to detect gas or temperature anomalies and transmit abnormal information; a fire extinguishing device is fixedly installed in the inner tank body; a system control box, in which integrated control electrical components including a fire extinguishing controller are placed, and a control terminal is provided; the fire extinguishing controller is used to receive signals from the fire extinguishing detector and control the start of the fire extinguishing device.

[0006] Preferably, the flameproof box is provided with a bottom plate, two long side plates, two short side plates, a flameproof horizontal partition and a flameproof vertical partition;

[0007] The bottom plate, two long side plates and two short side plates together constitute a accommodating space; the flameproof horizontal partition and the flameproof vertical partition divide the flameproof box into three chambers, namely a battery chamber, an electrical chamber and a wiring chamber; the battery chamber is used to place the inner tank body; the electrical chamber is used to place electrical components that control and connect the inner tank body; the wiring chamber is used to place the communication port of the inner tank body and the external connection of the electrical components of the flameproof box, and is also provided with a wiring port of the external interface; the flameproof box cover is divided into a battery chamber cover, an electrical component chamber cover and a wiring chamber cover; the battery chamber cover is used to close the battery chamber; the electrical component chamber cover is used to close the electrical component chamber; the wiring chamber cover is used to close the wiring chamber.

[0008] Preferably, the sealing member is circumferentially installed and fixed above the four walls of the inner tank box.

[0009] The fire extinguishing device has a built-in colorless, odorless and non-toxic gas fire extinguishing agent, which will not affect other battery cells and components after being activated and does not require special cleaning.

[0010] Preferably, the flameproof box is made of high-performance steel.

[0011] Preferably, the electrical components include a battery management system, relays, fuses, current sensors, etc., which can monitor battery voltage, temperature, current and other parameters, and implement protection functions such as overvoltage, undervoltage, high temperature, low temperature, overcurrent, insulation fault, short circuit, etc. according to the parameters.

[0012] Preferably, the inner tank and the flameproof box form a double-layer protective structure, so that the flameproof power supply box for mining has both flameproof performance and dustproof and waterproof functions.

[0013] Preferably, the fire extinguishing detector, fire extinguishing controller and fire extinguishing device form an automatic fire extinguishing system, which adopts a temperature-sensitive temperature line with a wide temperature measurement area and fast speed. When the fire extinguishing detector detects abnormal temperature or gas, the fire extinguishing controller can report alarm information and start the fire extinguishing device to achieve the effect of automatic fire extinguishing and cooling.

[0014] Preferably, the system control box contains integrated components such as a fire extinguishing controller and a battery management system controller. When multiple power boxes are used in series, parallel or mixed, the system control box can coordinate the use of each power box to achieve power system parameter requirements of larger capacity or higher voltage.

[0015] The beneficial effects of the present invention are as follows: a double-layer protective structure of a mine-use flameproof power supply device produced by the present invention is used for the first time in the field of mine-use flameproof power supplies; the inner tank body and the inner tank cover, through the effect of the seal, reach the waterproof and dustproof level of IP67 or above; through the double-layer structural protection of the flameproof box and the inner tank body, the insulation safety protection and failure control performance of the battery are greatly improved; at the same time, the electrical components include a battery management system, a relay, a fuse, a current sensor, etc., which can monitor the battery voltage, temperature, current and other parameters, and realize overvoltage, undervoltage, high temperature, low temperature, overcurrent, insulation according to the parameters. Fault, short circuit and other protection functions; and, fire extinguishing detectors and fire extinguishing devices are installed in the explosion-proof box. When the lithium-ion battery pack runs away from control and the heat increases, causing the temperature of the battery cell to rise, the temperature detector detects the abnormal temperature increase and transmits the signal to the fire extinguishing controller, which controls the fire extinguishing device to work; this allows the battery to take fire extinguishing action in advance when it loses control, preventing the thermal runaway from further spreading and causing serious consequences, and the addition of gas detectors further enhances the detection effect; in addition, the existence of the system control box can provide a solution to the parameter requirements of power supply systems with larger capacity or higher voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the explosion-proof box of the present invention;

[0018] Figure 3 It is an overall schematic diagram of the explosion-proof box of the present invention;

[0019] Figure 4 is a schematic diagram of the inner tank box of the present invention;

[0020] Figure 5It is a schematic diagram of the box body of the flameproof box of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the present invention clearer, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0022] like Figure 1 to Figure 5 The flameproof power supply device for mining shown in the figure comprises an inner tank box 1, in which a lithium-ion battery pack 2 is placed, a communication port 11 and a high-voltage port 16 are provided, and the communication port 11 and the high-voltage port 16 are both sealed interfaces; an inner tank box cover 13, which seals the lithium-ion battery pack 2 in the inner tank box 1; a sealing member 12, which is located between the inner tank box 1 and the inner tank box cover 13, so that a waterproof and dustproof enclosed space is formed in the inner tank box 1; a flameproof box 4, which is square, is provided with a bottom plate 41, two long side plates 42, two short side plates 43, a flameproof horizontal partition 44 and a flameproof vertical partition 45; the bottom plate 41, the two long side plates 42 and the two short side plates 43 together constitute an accommodating space; the flameproof horizontal partition 44 and the flameproof vertical partition 45 divide the flameproof box 4 into three chambers, namely a battery chamber 5, an electrical chamber 6 and a wiring chamber 7; the battery chamber 5 is used to place the inner tank box 1; the electrical chamber 6 is used to place the control connection of the inner tank The electrical components of the box body 1; the wiring cavity 7 is used to place the communication port 11, the high-voltage port 16 of the inner tank box and the external connection of the electrical parts of the explosion-proof box, and is also provided with a wiring port 72 of the external interface; the explosion-proof box cover is used to close the explosion-proof box 4; the fire extinguishing detector 14 is placed in the inner tank box 1, and is used to detect gas or temperature anomalies and transmit abnormal information; the fire extinguishing device 15 is fixedly installed in the inner tank box 1; the system control box 3 is fixedly installed above the explosion-proof box cover, and an integrated control electrical component 31 including a fire extinguishing controller is placed inside, and a control terminal 32 is provided; the fire extinguishing controller is used to receive the signal of the fire extinguishing detector and control the switch of the fire extinguishing device 15; the control terminal 32 is connected to the wiring port 72; the connection between the inner tank box, the explosion-proof box and other electrical parts of the present invention is a conventional connection method for technicians in this industry, and will not be repeated here.

[0023] The sealing member 12 is a silicone strip, which is installed around and fixed on the four walls of the inner tank box 1; the inner tank box cover 13 presses down on the sealing member 12 and is fixed on the inner tank box 1 by bolts, so that the inner tank box 1 forms a closed space to achieve dustproof and waterproof effects.

[0024] The explosion-proof box cover is used to close the explosion-proof box, and is divided into a battery cavity cover 51, an electrical component cavity cover 61 and a wiring cavity cover 71; the battery cavity cover 51 is used to close the battery cavity 5; the electrical component cavity cover 61 is used to close the electrical component cavity 6; the wiring cavity cover 71 is used to close the wiring cavity 7.

[0025] Preferably, the sealing member 12 is made of a rubber ring, foam, silicone or the like.

[0026] Preferably, the flameproof box 4 is made of a flame-retardant material that complies with the flameproof process.

[0027] Preferably, the fire extinguishing detector 14 is a gas detector or a gas temperature integrated detector.

[0028] Preferably, the system control box contains system control components and a fire extinguishing controller, which can coordinate the normal operation of multiple power boxes when used in combination.

[0029] The beneficial effects of the present invention are as follows: a double-layer protection structure of a mine flameproof power supply device made by the present invention is applied to the field of mine flameproof power supplies for the first time; the inner tank body and the inner tank cover, through the effect of the seal, reach the waterproof and dustproof level of IP67 or above; through the double-layer structural protection of the flameproof box and the inner tank body, the insulation safety protection and failure control performance of the battery are greatly improved; at the same time, the electrical components include a battery management system, a relay, a fuse, a current sensor, etc., which can monitor the battery voltage, temperature, current and other parameters, and realize overvoltage, undervoltage, high temperature, low temperature, overcurrent, insulation failure according to the parameters. Fault, short circuit and other protection functions; and, fire extinguishing detectors and fire extinguishing devices are installed in the explosion-proof box. When the lithium-ion battery pack thermally runs away and the heat rises so that the temperature of the battery cell rises, the temperature detector detects the abnormal temperature rise and transmits the signal to the fire extinguishing controller, and the fire extinguishing controller controls the fire extinguishing device to work; this allows the battery to take fire extinguishing action in advance when it loses control, preventing the thermal runaway from further spreading and causing serious consequences, and the addition of gas detectors further enhances the detection effect; in addition, the existence of the system control box can provide a solution to meet the parameter requirements of power supply systems with larger capacity or higher voltage.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the present invention.

Claims

1. A flameproof power supply device for mining, characterized in that: include: An inner tank body, in which a lithium-ion battery pack is placed, and is provided with a sealing interface; an inner tank cover, which seals the lithium-ion battery pack in the inner tank body; The sealing member is located between the inner tank body and the inner tank cover, so that a waterproof and dustproof closed space with IP67 level or above is formed in the inner tank body; The flameproof box has the inner tank body and the inner tank cover installed and fixed inside, and also has the electrical components connected to the inner tank body to manage and control the lithium-ion battery pack, as well as the connecting wires connecting the sealing interface and the electrical components installed and fixed, and the box body is also provided with a wiring port for the external interface; An explosion-proof box cover, used to close the explosion-proof box; The fire extinguishing detector is placed in the inner tank, can detect CO, temperature and smoke parameters, and uses temperature-sensitive thermistor wires, which are evenly arranged above the battery pack; Fire extinguishing device with built-in fire extinguishing agent; System control box, used to coordinate multiple power boxes to work in series and parallel to achieve a battery system with higher voltage and greater power; A fire extinguishing controller, used to receive the signal from the fire extinguishing detector and control the activation of the fire extinguishing device; The flameproof box is provided with a bottom plate, two long side plates, two short side plates, a flameproof horizontal partition and a flameproof vertical partition; The bottom plate, two long side plates and two short side plates together form a placement space; the flameproof horizontal partition and the flameproof vertical partition divide the flameproof box into three chambers, namely a battery chamber, an electrical chamber and a wiring chamber; The battery cavity is used to place the inner tank box; The electrical cavity is used to place electrical components that control and connect the inner tank box; The wiring cavity is used to place the sealing interface of the inner tank body and the external connection of the electrical parts of the flameproof box, and is also provided with a wiring port of the external interface; The flameproof box cover is divided into a battery cavity cover, an electrical cavity cover and a wiring cavity cover; the battery cavity cover is used to seal the battery cavity; The electrical cavity cover is used to close the electrical cavity; the wiring cavity cover is used to close the wiring cavity.

2. A mine flameproof power supply device according to claim 1, characterized in that: The sealing member is installed and fixed around the top of the four walls of the inner tank box.

3. A mine flameproof power supply device according to claim 1, characterized in that: The fire extinguishing device has a built-in colorless, odorless and non-toxic gas fire extinguishing agent.

4. A mine flameproof power supply device according to claim 1, characterized in that: The flameproof box is made of high-performance steel and cooperates with the flameproof box cover to meet the flameproof requirements.

5. A mine flameproof power supply device according to claim 1, characterized in that: The electrical components, including a battery management system, relays, fuses, current sensors, etc., can monitor battery voltage, temperature and current parameters, and implement overvoltage, undervoltage, high temperature, low temperature, overcurrent, insulation fault and short circuit protection functions according to the parameters.

6. A mine flameproof power supply device according to claim 1, characterized in that: The inner tank and the flameproof box form a double-layer protection structure.

7. A mine flameproof power supply device according to claim 1, characterized in that: The fire extinguishing detector, fire extinguishing controller and fire extinguishing device form an automatic fire extinguishing system, which uses a temperature-sensitive temperature line. When the fire extinguishing detector detects abnormal temperature or gas, the fire extinguishing controller can report an alarm message and start the fire extinguishing device to achieve the effect of automatic fire extinguishing and cooling.

8. A mine flameproof power supply device according to claim 1, characterized in that: The system control box contains a fire extinguishing controller and a battery management system controller integrated component. When multiple power boxes are used in series, parallel or mixed, the system control box coordinates the coordinated use of each power box to achieve power system parameter requirements of larger capacity or higher voltage.

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