Mining explosion-proof power supply assembly

Abstract

The invention relates to the technical field of power supply structures, in particular to a mining flame-proof power supply assembly which comprises a flame-proof box composed of a box body and a box cover, a plurality of flame-proof chambers arranged in the box body and battery pieces installed in the flame-proof chambers. By adopting a mode of separating a plurality of battery pieces, independent explosion-proof processing can be performed on each battery piece, so that mutual interference of the plurality of battery pieces is avoided, even if one battery piece explodes, other battery pieces are not influenced, property loss is reduced, explosive power is reduced, explosion isolation work is simpler, and the explosion isolation efficiency is improved. Meanwhile, by means of the mode that the control unit is disconnected with the battery pieces, explosion can be effectively avoided, and the working effects of explosion prevention and explosion interference are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply structures, and particularly to an explosion-proof power supply assembly for mining use. Background Art

[0002] With the acceleration of the global industrialization process, the mining industry, as one of the basic industries, has increasingly strict requirements for safe production. The mining operation environment is complex, and there are flammable and explosive substances such as gas and dust. Therefore, the explosion-proof performance of mining equipment is crucial. As the core component of mining electrical equipment, the safety and reliability of the explosion-proof power supply assembly are directly related to the lives of miners and the production efficiency of mines.

[0003] The explosion-proof measures adopted by traditional mining power supply assemblies only place the power supply in an explosion-proof box and use the impact resistance of the explosion-proof box to isolate the explosion impact within the explosion-proof box. This method belongs to passive protection, which can only play a protective role after an explosion occurs, and cannot fundamentally prevent the occurrence of an explosion, nor can it give early warnings or interventions to potential dangers before an explosion occurs. Its risk is relatively high. And because the traditional power supply assembly is an integral whole, once an explosion occurs, the entire power supply will be damaged, resulting in relatively large property losses, and at the same time, its explosion power is relatively large. Summary of the Invention

[0004] The present invention provides an explosion-proof power supply assembly for mining use, which can effectively solve the problems in the background art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: An explosion-proof power supply assembly for mining use includes an explosion-proof box composed of a box body and a box cover, a plurality of explosion-proof chambers opened in the box body, and battery cells installed in each explosion-proof chamber; A detection unit and a control unit are provided in each explosion-proof chamber. The detection unit is used to detect whether there is energy leakage in the explosion-proof chamber. Each battery cell is connected in series through the control unit. And when there is energy leakage in the explosion-proof chamber, the corresponding control unit is separated from the battery cell, and the battery cell is no longer connected to the circuit. The battery cells in the plurality of explosion-proof chambers without energy leakage remain in a series power supply state.

[0006] In some embodiments of the present invention, the detection unit adopts at least one of a leakage detector, a thermal imaging detector, or an electromagnetic radiation detector.

[0007] In some embodiments of the present invention, the control unit includes two conductive columns respectively docked with two contacts on the battery cell and a conductive plate installed in the flameproof chamber. One conductive column in the flameproof chamber is electrically connected to one conductive column in the adjacent flameproof chamber. When the two conductive columns are electrically connected to the conductive plate, the corresponding battery cell is no longer connected to the circuit.

[0008] In some embodiments of the present invention, the control unit further includes a movable plate installed on each conductive column. The movable plate is slidably installed in the flameproof chamber, and the movable plate and the flameproof chamber are connected by a spring. A push-pull structure is provided in each flameproof chamber. A pressing plate is provided at the movable end of the push-pull structure. The pressing plate contacts the two movable plates at least in a partial movable area of the pressing plate.

[0009] In some embodiments of the present invention, the control unit further includes a grid composed of a plurality of grid plates, and the grid is used for arc extinguishing treatment.

[0010] In some embodiments of the present invention, along the direction away from the conductive column, the distance between adjacent two grid plates gradually increases.

[0011] In some embodiments of the present invention, the power supply assembly further includes an air supply unit provided on the box body, and the air supply unit is used to introduce clean air into each flameproof chamber.

[0012] In some embodiments of the present invention, a plurality of guiding ribs for guiding and supporting the battery cell are provided in each flameproof chamber.

[0013] In some embodiments of the present invention, a sandwich space is formed in the box body, and the sandwich space is located outside each flameproof chamber, and the inside of the sandwich space stores oil. Each flameproof chamber is provided with a pressure relief structure connected to the sandwich space.

[0014] In some embodiments of the present invention, the pressure relief structure includes a plurality of movable bodies. One end of the movable body is located in the flameproof chamber, the other end of the movable body slides into the sandwich space, and limiting edges are provided at both ends of the movable body. The movable body and the flameproof chamber are connected by a plurality of elastic bodies.

[0015] Through the technical solution of the present invention, the following technical effects can be achieved: By adopting the method of separating multiple solar cells, independent explosion isolation treatment can be carried out on each solar cell, thus avoiding interference between multiple solar cells. Even if one solar cell explodes, it will not affect other solar cells, thereby reducing property losses, minimizing the explosion power, making the explosion isolation work simpler. At the same time, by using the control unit to disconnect the connection with the solar cells, the occurrence of explosion can be effectively avoided, achieving the working effects of preventing explosion and interfering with explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic explosion structure diagram of the power supply assembly in the embodiment of the present invention; Figure 3 is a schematic top view structure diagram of the box body in the embodiment of the present invention; Figure 4 is a schematic sectional view structure diagram of the box body in the embodiment of the present invention; Figure 5 is a schematic diagram of the internal structure of the explosion isolation chamber in the embodiment of the present invention; Figure 6 is a schematic structural diagram of the control unit in the embodiment of the present invention; Figure 7 is a schematic structural diagram of the grille in the embodiment of the present invention.

[0018] Reference Numerals: 100, box body; 101, box cover; 102, explosion isolation chamber; 103, guiding rib; 104, interlayer space; 105, movable body; 106, limiting edge; 107, elastic body; 200, solar cell; 300, detection unit; 400, control unit; 401, conductive column; 402, conductive plate; 403, movable plate; 404, spring; 405, push-pull structure; 406, pressing plate; 407, grid plate; 500, air supply unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] As Figures 1 to 6 shown, a kind of explosion-proof power supply component for mines of the present invention includes an explosion-proof box composed of a box body 100 and a box cover 101, a plurality of explosion-proof chambers 102 opened in the box body 100, and battery cells 200 installed in each explosion-proof chamber 102; A detection unit 300 and a control unit 400 are arranged in each explosion-proof chamber 102. The detection unit 300 is used to detect whether there is energy leakage in the explosion-proof chamber 102. The battery cells 200 are connected in series through the control unit 400. When there is energy leakage in the explosion-proof chamber 102, the corresponding control unit 400 is separated from the battery cell 200, and the battery cell 200 is no longer connected to the circuit. The battery cells 200 in the plurality of explosion-proof chambers 102 without energy leakage remain in a series power supply state.

[0022] In the present invention, the explosion-proof chamber 102 can be opened on the top or any side wall of the box body 100. The box cover 101 seals the openings of all the explosion-proof chambers 102, and the connection manner between the box cover 101 and the box body 100 can adopt any manner such as bolt connection, snap connection, quick installation connection, etc. The setting of the box cover 101 is mainly used to isolate the battery cells 200 in the explosion-proof chamber 102; the arrangement manner of the plurality of explosion-proof chambers 102 can be any arrangement manner such as linear arrangement, multi-row arrangement, etc., and the number of the explosion-proof chambers 102 can be determined according to the assembly quantity of the battery cells 200; by jointly forming a power supply with a plurality of battery cells 200, a plurality of explosion-proof chambers 102 can be used to separate the plurality of battery cells 200, so that each battery cell 200 can be independently protected. When one battery cell 200 explodes, it will not affect other battery cells 200, so that other battery cells 200 remain intact, thereby reducing losses and reducing the explosion power; when installing the battery cells 200, a gap needs to be left between the battery cells 200 and the inner wall of the explosion-proof chamber 102 to improve heat dissipation and facilitate having enough space to install the battery cells 200; During use, multiple assembled solar cells 200 can work in series through multiple control units 400, so that multiple solar cells 200 can form a complete power source. When an abnormal situation such as damage or discharge occurs in the solar cell 200, causing energy leakage in the flameproof chamber 102, the detection unit 300 can detect the leakage phenomenon and control the corresponding control unit 400 to separate from the solar cell 200. At this time, the solar cell 200 is no longer connected to the circuit, so that the solar cell 200 can no longer release energy and affect the circuit. By using this method, the explosion can be prevented and interfered in time, so that the explosion will no longer occur. And this method can ensure that the remaining multiple solar cells 200 can still be connected to the circuit and continue to work, so as to ensure the stable operation of the power supply module and improve its anti-interference ability. When the detection unit 300 corresponding to the solar cell 200 that is no longer connected to the circuit detects that the energy continues to be released, the remaining multiple solar cells 200 need to be separated from the corresponding control unit 400, so that all solar cells 200 are in a power-off state. In this way, even if the solar cell 200 explodes, the remaining solar cells 200 will not be affected. And due to the protection of the independent flameproof chamber 102, the explosion can be limited within a certain range, thereby realizing the flameproof work; In actual use, the box body 100 and the box cover 101 can be made of materials such as cast steel, stainless steel, aluminum alloy, engineering plastics, and composite materials. And when choosing, factors such as environment, strength, weight, and cost need to be considered comprehensively; Electrical structures such as junction boxes, controllers, and voltage regulators can also be installed on the box body 100. Among them, the junction box can facilitate the connection between the power supply module and the using equipment. The controller can realize the collection of the data detected by the detection unit 300 and the control of the control unit 400. The voltage regulator can keep the output voltage of the power supply module constant when the number of solar cells 200 connected to the circuit changes. At the same time, for the convenience of data collection, the controller can also have the function of recording the instantaneous energy output by the power supply module and the cumulative energy within a specified time, so as to facilitate the control of the working time, working mode, etc. of the power supply module; In some embodiments, several solar cells 200 can also be connected in parallel as long as the use requirements of the power supply module can be met; By adopting the method of separating multiple solar cells 200, each solar cell 200 can be independently flameproof-treated, thus avoiding mutual interference among multiple solar cells 200. Even if one solar cell 200 explodes, it will not affect other solar cells 200. Thereby reducing property losses and reducing the explosion power, making the explosion isolation work simpler. At the same time, by using the method of disconnecting the control unit 400 from the solar cell 200, the explosion can be effectively avoided, and the working effects of preventing explosion and interfering with explosion are achieved.

[0023] Optimized based on the above implementation, the detection unit 300 adopts at least one of a leakage detector, a thermal imaging detector, or an electromagnetic radiation detector.

[0024] In the present invention, the leakage current detector is a device for detecting whether there is a leakage current phenomenon in a circuit. Leakage current usually refers to the abnormal leakage of current caused by reasons such as insulation damage, wire aging, or equipment failure. When the battery cell 200 fails, it may cause current leakage. The leakage current detector can monitor the current state in the explosion-proof chamber 102 in real time. Once abnormal leakage is detected, it immediately triggers the separation of the control unit 400 from the battery cell 200 to cut off the circuit of the faulty unit; The thermal imaging detector is a device that detects the surface temperature distribution of an object through infrared technology. It can convert thermal energy into a visual image to discover abnormal high-temperature areas in the device or environment. When the battery cell 200 generates abnormal high temperature due to overload, short circuit, or internal failure, the thermal imaging detector can monitor the temperature distribution in the explosion-proof chamber 102 in real time to discover the overheated area. Once abnormal temperature is detected, the thermal imaging detector will trigger the separation of the control unit 400 from the battery cell 200 to cut off the circuit of the faulty unit and prevent an explosion or fire caused by high temperature; The electromagnetic radiation detector is a device for detecting the intensity of the electromagnetic field. When the battery cell 200 has an arc discharge or electromagnetic interference, the electromagnetic radiation detector can detect abnormal electromagnetic radiation signals. Once abnormal electromagnetic radiation is detected, the electromagnetic radiation detector will trigger the separation of the control unit 400 from the battery cell 200 to cut off the circuit of the faulty unit and prevent an explosion caused by arc discharge; Of course, when in use, several instruments can be combined for use to improve the detection sensitivity and comprehensiveness. And in addition to the above detectors, various instruments such as pressure detection and ultrasonic detectors can also be used.

[0025] Optimized based on the above implementation, as Figure 6 shown, the control unit 400 includes two conductive columns 401 respectively docked with two contacts on the battery cell 200 and a conductive plate 402 installed in the explosion-proof chamber 102. One conductive column 401 in the explosion-proof chamber 102 is electrically connected to one conductive column 401 in its adjacent explosion-proof chamber 102. When the two conductive columns 401 are electrically connected to the conductive plate 402, the corresponding battery cell 200 is no longer connected to the circuit.

[0026] In the above description, multiple solar cells 200 are electrically connected through multiple conductive posts 401, and the two conductive posts 401 in adjacent two flameproof chambers 102 are electrically connected. Specifically, one conductive post 401 in one flameproof chamber 102 can be connected to one conductive post 401 or another conductive post 401 in the adjacent flameproof chamber 102. Here, there is no requirement for which conductive post 401 in the adjacent flameproof chamber 102 the conductive post 401 is specifically connected to, as long as it can achieve the connection work of multiple solar cells 200. And according to the different connection methods of the conductive posts 401 in adjacent flameproof chambers 102, series or parallel connection can be achieved; the specific structure of the conductive post 401 can be a column, a boss, a buckle cap, or any other structure that can achieve electrical connection with the contacts on the solar cell 200. And because the conductive post 401 has two states of connection and disconnection with the solar cell 200, the conductive post 401 needs to be able to move in the flameproof chamber 102, and the two conductive posts 401 need to contact or separate from the two contacts on the solar cell 200 simultaneously; during normal operation, the two conductive posts 401 contact the two contacts on the solar cell 200. At this time, multiple solar cells 200 achieve electrical connection work, and they are all connected to the circuit and form a complete power source. When an abnormal phenomenon occurs in the solar cell 200, it is necessary to disconnect the control unit 400 from the solar cell 200. At this time, the two conductive posts 401 are separated from the two contacts on the solar cell 200 respectively, and the two conductive posts 401 contact the conductive plate 402 simultaneously. In this way, by using the conductive plate 402, the integrity of the circuit can be achieved, and it is convenient for other multiple solar cells 200 to still be normally connected to the circuit and perform power supply work, thereby avoiding the abnormal solar cell 200 from interfering with the power supply work of the entire power supply assembly; It should be noted that since the conductive post 401 needs to separate from the contact on the solar cell 200 first, and then the conductive post 401 contacts the conductive plate 402, there will be an instantaneous power outage in the power supply assembly. And because the power outage time is short, and the electrical equipment in the mine generally uses low-voltage equipment, the power outage will not affect the circuit or the electrical equipment, and the continuous operation of the electrical equipment can be ensured.

[0027] Optimized based on the above implementation, as Figure 6 shown, the control unit 400 further includes a movable plate 403 installed on each conductive post 401. The movable plate 403 is slidably installed in the flameproof chamber 102, and the movable plate 403 is connected to the flameproof chamber 102 through a spring 404; A push-pull structure 405 is provided in each flameproof chamber 102. The movable end of the push-pull structure 405 is provided with a pressing plate 406. At least in part of the movable area of the pressing plate 406, the pressing plate 406 contacts the two movable plates 403.

[0028] In this case, the movable plate 403 is mainly used to support and guide the conductive column 401. By moving the movable plate 403, the conductive column 401 can move between the contact on the battery cell 200 and the conductive plate 402. The movable plate 403 can be made of insulating or conductive materials. When the movable plate 403 is made of insulating materials, the conductive columns 401 in adjacent two flameproof chambers 102 need to be directly connected. When the movable plate 403 is made of conductive materials, the movable plates 403 in adjacent two flameproof chambers 102 can be electrically connected to achieve the electrical connection of the conductive columns 401. And because the movable plate 403 slides on the inner wall of the flameproof chamber 102, conductive sheets can be arranged on the inner wall of the flameproof chamber 102 so that the movable plate 403 can slide on the conductive sheets. The spring 404 is mainly used to provide elastic thrust for the movable plate 403 and the conductive column 401. After the battery cell 200 is assembled, the conductive column 401 can be in contact with and tightly adhere to the contact on the battery cell 200. Due to the use of the spring 404 and its own conductivity, the movable plate 403 needs to be made of insulating materials. Since in the natural state, the spring 404 can make the conductive column 401 in contact with the contact on the battery cell 200, the pressing plate 406 used to push the movable plate 403 to move needs to be able to separate from the movable plate 403 to avoid the pressing plate 406 obstructing the moving position of the movable plate 403. When the position of the conductive column 401 needs to be adjusted, the push-pull structure 405 can be used to drive the pressing plate 406 to move, so that the pressing plate 406 moves onto the movable plate 403 and drives the movable plate 403 to move, thereby driving the conductive column 401 to move. The push-pull structure 405 can adopt an electromagnetic telescopic rod or other structures that can play a push-pull role.

[0029] Optimized based on the above implementation, as Figure 7 shown, the control unit 400 further includes a grid composed of a plurality of grid plates 407, and the grid is used for arc extinguishing treatment of the arc.

[0030] When abnormal phenomena such as discharge occur in the battery cell 200 or when the contact on the battery cell 200 separates from the conductive column 401, arcs are likely to be generated in the flameproof chamber 102. To avoid the arcs causing explosion or damage to the equipment, arc extinguishing treatment needs to be carried out on the arcs. At this time, the grid composed of a plurality of grid plates 407 can be used to achieve the arc extinguishing function, that is, when the arc moves to the position of the grid, the grid will divide the arc into multiple short arcs. Each short arc is equivalent to a small series resistor, and the total impedance increases significantly, so that the current drops rapidly. And the grid plate 407 can be made of materials with heat conduction performance, so as to quickly absorb the heat of the arc, reduce the arc temperature, make it difficult to maintain the arc, and finally extinguish it. It should be noted that several grid plates 407 can be arranged in a parallel layout or a vertical staggered manner. When the vertical staggered manner is adopted, the grid is a structure composed of multiple small squares, and this structure can extinguish the arc in any direction.

[0031] Optimized based on the above implementation, as Figure 7 shown, along the direction away from the conductive column 401, the distance between two adjacent grid plates 407 gradually increases.

[0032] When the arc is divided into multiple short arcs between multiple grid plates 407, as the arc moves and the distance between two adjacent grid plates 407 increases, the short arcs will be stretched, the impedance of the short arcs increases, and the energy consumption is faster, making it easier to extinguish. Here, the shape of the grid plate 407 can be set as a cone, with the wider end of the cone facing the conductive column 401 and the narrower end of the cone away from the conductive column 401.

[0033] Optimized based on the above implementation, as Figure 1 shown, the power supply assembly further includes an air supply unit 500 arranged on the box body 100, and the air supply unit 500 is used to introduce clean air into each explosion-proof chamber 102.

[0034] In the present invention, since the working position of the power supply assembly is generally located underground in mines full of flammable and explosive substances such as dust and gas, in order to prevent such substances from entering the explosion-proof chamber 102 through the gap between the box body 100 and the box cover 101 and contacting the battery cells 200, it is necessary to inflate each explosion-proof chamber 102 by means of the air supply unit 500 to form a positive pressure in the explosion-proof chamber 102. In this way, the excess air will be discharged outside the power supply assembly through the gap between the box body 100 and the box cover 101, thus forming an airtight effect, and this method can also achieve the heat dissipation work of the battery cells 200. In an environment with a small gas content, clean air can be directly obtained by extracting the air in the mine and filtering it. When clean air cannot be obtained through a simple method in the mine, the air above the ground can be extracted to obtain clean air. In the art, the air supply unit 500 can be composed of a gas pump, a filtering unit, an air pipe, etc. Optimized based on the above implementation, as Figure 5 shown, several guiding ribs 103 for guiding and supporting the battery cells 200 are arranged in each explosion-proof chamber 102.

[0035] When the shape of the battery cell 200 is square or rectangular, the number of guiding rib strips 103 can be set to four, and each guiding rib strip 103 corresponds to one corner of the battery cell 200. When the shape of the battery cell 200 is polygonal or other shapes, the number and cross-sectional shape of the guiding rib strips 103 can be adjusted adaptively so that the multiple guiding rib strips 103 can guide and support the battery cell 200. When the battery cell 200 is stuck between the multiple guiding rib strips 103, the battery cell 200 can be fixed to the multiple guiding rib strips 103 through bolts. In this way, the battery cell 200 will not contact the inner wall of the flameproof chamber 102, and the position of the battery cell 200 is fixed.

[0036] Optimized based on the above implementation, as Figure 4 shown, a sandwich space 104 is provided inside the box body 100, and the sandwich space 104 is located outside each flameproof chamber 102, and the sandwich space 104 stores oil liquid inside. A pressure relief structure is provided between the flameproof chamber 102 and the sandwich space 104, and the pressure relief structure is used to transfer the explosion pressure inside the flameproof chamber 102 into the oil liquid inside the sandwich space 104.

[0037] In the present invention, by providing the sandwich space 104 and filling the oil liquid inside the sandwich space 104, the sound wave can be effectively absorbed, significantly reducing the sound wave intensity generated by the explosion and reducing noise pollution; by providing a pressure relief structure between the flameproof chamber 102 and the sandwich space 104, when the battery cell 200 explodes, the impact force acts on the oil liquid inside the sandwich space 104 through the pressure relief structure. At this time, the fluidity of the oil liquid is used to absorb part of the shock wave energy, and the energy is dispersed to a larger area through the flow, thereby reducing the local pressure, achieving the effect of isolating the explosion by using the liquid, and because the impact force is reduced, the box body 100 and the box cover 101 can more easily physically isolate the explosion, improving the flameproof effect.

[0038] Optimized based on the above implementation, as Figure 4 shown, the pressure relief structure includes a number of movable bodies 105. One end of the movable body 105 is located inside the flameproof chamber 102, the other end of the movable body 105 slides into the sandwich space 104, and limiting edges 106 are provided at both ends of the movable body 105. The movable body 105 is connected to the flameproof chamber 102 through a number of elastic bodies 107.

[0039] The movable body 105 can be position-fixed and reset through the elastic body 107. When an explosion occurs in the flameproof chamber 102, the explosion will impact the movable body 105, and the movable body 105 will move towards the interlayer space 104. At this time, the movable body 105 squeezes the hydraulic fluid in the interlayer space 104, so as to utilize the fluidity of the hydraulic fluid to spread the acting force over a large area. Since the interiors of the other flameproof chambers 102 are in a stable state, the hydraulic fluid can synchronously transfer the acting force to the movable bodies 105 in the other flameproof chambers 102, so that the movable bodies 105 move towards the interiors of the flameproof chambers 102. The movement of the movable bodies 105 will cause elastic deformation of the elastic bodies 107, so as to utilize the elastic bodies 107 to realize the pressure relief and buffering work for the explosion impact force. The limiting edges 106 on the movable bodies 105 are mainly used to limit the positions of the movable bodies 105, to prevent the movable bodies 105 from completely entering the flameproof chambers 102 or the interlayer spaces 104.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A flameproof power supply assembly for mining, characterized in that: It comprises a flameproof box consisting of a box body and a box cover, a plurality of flameproof chambers opened in the box body and battery cells installed in each of the flameproof chambers; A detection unit and a control unit are provided in each of the explosion-proof chambers. The detection unit is used to detect whether there is energy leakage in the explosion-proof chamber. The battery cells are connected in series through the control unit. When energy leakage occurs in the explosion-proof chamber, the corresponding control unit is separated from the battery cell, and the battery cell is no longer connected to the circuit. The battery cells in the explosion-proof chambers where no energy leakage occurs remain in a series power supply state.

2. A mine flameproof power supply assembly according to claim 1, characterized in that: The detection unit adopts at least one of a leakage detector, a thermal imaging detector or an electromagnetic radiation detector.

3. A mine flameproof power supply assembly according to claim 1, characterized in that: The control unit includes two conductive posts respectively connected to two contacts on the battery cell and a conductive plate installed in the explosion-proof chamber. A conductive post in the explosion-proof chamber is electrically connected to a conductive post in an adjacent explosion-proof chamber. When the two conductive posts are electrically connected to the conductive plate, the corresponding battery cell is no longer connected to the circuit.

4. A mine flameproof power supply assembly according to claim 3, characterized in that: The control unit further comprises a movable plate mounted on each of the conductive pillars, the movable plate being slidably mounted in the flameproof chamber, and the movable plate is connected to the flameproof chamber via a spring; A push-pull structure is provided in each of the flameproof chambers. A pressing plate is provided at the movable end of the pushing-pull structure. The pressing plate is in contact with the two movable plates at least in a partial movable area of ​​the pressing plate.

5. A mine flameproof power supply assembly according to claim 4, characterized in that: The control unit further comprises a grid composed of a plurality of grid plates, and the grid is used for extinguishing the electric arc.

6. A mine flameproof power supply assembly according to claim 5, characterized in that: Along the direction away from the conductive pillar, the distance between two adjacent grid plates gradually increases.

7. A mine flameproof power supply assembly according to claim 1, characterized in that: The power supply assembly also includes an air supply unit disposed on the box body, and the air supply unit is used to introduce clean air into each of the explosion-proof chambers.

8. A mine flameproof power supply assembly according to claim 1, characterized in that: Each of the flameproof chambers is provided with a plurality of guide ribs for guiding and supporting the battery sheets.

9. A mine flameproof power supply assembly according to claim 1, characterized in that: An interlayer space is provided in the box body, and the interlayer space is located outside each of the flameproof chambers, and oil is stored in the interlayer space; A pressure relief structure is provided between the explosion-proof chamber and the interlayer space, and the pressure relief structure is used to transfer the explosion pressure in the explosion-proof chamber to the oil in the interlayer space.

10. A mine flameproof power supply assembly according to claim 9, characterized in that: The pressure relief structure includes a plurality of movable bodies, one end of which is located in the explosion-proof chamber, and the other end of which slides into the interlayer space, and both ends of the movable body are provided with limited edges, and the movable body is connected to the explosion-proof chamber through a plurality of elastic bodies.

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