Explosion-proof power supply for inspection robot and inspection robot

Abstract

The utility model relates to the technical field of mining explosion-proof power supplies, in particular to an explosion-proof power supply for an inspection robot and the inspection robot. The explosion-proof power supply comprises a shell provided with a battery cavity and an equipment cavity which are located on the two sides of a partition plate and completely isolated; the storage battery is mounted in the battery cavity; the charging and discharging relay is mounted in the equipment cavity; the charging and discharging interface is arranged on the side wall of the equipment cavity; the partition plate is provided with a through-wall terminal, and the storage batteries, the charging and discharging relay and the charging and discharging interface which are located in different cavities are connected to a charging and discharging loop in series. An intrinsically-safe cavity provided with a methane detection power-off locking module is arranged on the outer side of the shell and used for controlling the charging and discharging loop to be disconnected from the interior of the power source. According to the utility model, the intrinsically safe cavity and the power supply are integrated, and the methane detection power-off locking module arranged in the intrinsically safe cavity can cut off power supply from the inside of the power supply when methane exceeds the limit, so that the power supply is prevented from outputting current to the outside.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof power supply technology for mining, and in particular to an explosion-proof power supply for an inspection robot and the inspection robot itself. Background Technology

[0002] Coal mine longwall faces cover vast areas, requiring inspection robots to be equipped with high-capacity, high-power explosion-proof power supplies to meet the safety requirements of underground mining and the robot's extended operating range. Furthermore, according to the newly released "Safety Technical Requirements for Coal Mine Inspection Robots," when methane concentration exceeds limits in the underground environment, the inspection robot should automatically stop operating, and the explosion-proof power supply should be able to cut off and lock out.

[0003] In existing technologies, external methane cutoff devices are generally used to address the safety power-off issue of inspection robots. When methane concentration in the environment exceeds the limit, the cutoff device can cut off the power supply to the external power supply device.

[0004] However, methane power-off devices are bulky and complex, and when equipped on inspection robots, they significantly reduce the robots' battery life. Furthermore, since methane power-off devices cut off power to the load from outside the power source, the power supply may still output current in actual use, posing a risk of generating electrical sparks and causing safety accidents. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the related art. To this end, this invention proposes an explosion-proof power supply and an inspection robot for use in inspection robots, to solve the problems of existing inspection robots' power supplies being unable to safely shut off when methane levels exceed limits and the short battery life of inspection robots.

[0006] In a first aspect, this utility model provides an explosion-proof power supply for an inspection robot, the explosion-proof power supply comprising:

[0007] The housing has battery compartments and equipment compartments located on both sides of the partition and completely isolated from each other;

[0008] A storage battery is installed inside the battery cavity;

[0009] A charge / discharge relay is installed inside the cavity of the device;

[0010] A charging / discharging interface is located on the side wall of the device cavity;

[0011] The partition is provided with through-wall terminals, which connect the batteries, the charging and discharging relays and the charging and discharging interfaces located in different chambers in series in the charging and discharging circuit;

[0012] An intrinsically safe cavity with a methane detection power-off interlocking module is provided on the outer side of the housing, which is used to control the disconnection of the charging and discharging circuit from the inside of the power supply.

[0013] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein a methane power-off interlocking relay is provided inside the equipment cavity, and a through-wall terminal is provided on the side wall of the equipment cavity, wherein the methane detection power-off interlocking module is electrically connected to the methane power-off interlocking relay.

[0014] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein a safety isolation barrier is also provided inside the equipment cavity, which is located between the through-wall terminal and the methane power-off interlocking relay.

[0015] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein the equipment cavity is further provided with a battery management system for controlling the charging and discharging relay to automatically disconnect or connect the charging and discharging circuit.

[0016] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein a circuit breaker is provided on the side wall of the battery cavity, and the circuit breaker is connected in series with the charging and discharging circuit.

[0017] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein the methane power-off lockout relay is located inside the equipment cavity and is positioned closer to the charging / discharging interface than the charging / discharging relay.

[0018] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein the intrinsically safe cavity is fixedly connected to the side wall of the housing opposite to the battery cavity.

[0019] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein the intrinsically safe cavity is provided with a methane sensor for detecting the methane concentration in the environment, and the methane sensor controls the methane power-off interlocking relay to close when the methane concentration is lower than the safe concentration.

[0020] Alternatively, the methane sensor can control the methane power-off lockout relay to disconnect when the methane concentration is not lower than the safe concentration.

[0021] According to the present invention, an explosion-proof power supply for an inspection robot is provided, wherein the intrinsically safe cavity adopts an IB protection level.

[0022] Secondly, this utility model provides an inspection robot that is powered by any of the explosion-proof power supplies described above.

[0023] The above-mentioned one or more technical solutions of this utility model have at least one of the following technical effects: Integrating the intrinsically safe cavity with the power supply, the methane detection and power-off interlocking module installed within the intrinsically safe cavity can cut off the power supply from within when methane levels exceed the limit, thereby eliminating the risk of the power supply outputting current or even generating electrical sparks that could cause safety accidents. Furthermore, the intrinsically safe cavity of this explosion-proof power supply is small in size, simple in structure, and lightweight, eliminating the need for the inspection robot to bear additional loads and greatly improving the robot's endurance.

[0024] In addition to the technical problems solved by this utility model, the technical features of the technical solutions constituted by this utility model, and the advantages brought about by these technical features, as described above, other technical features of this utility model and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or can be learned through the practice of this utility model. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the circuit structure of the explosion-proof power supply provided in this embodiment of the utility model.

[0027] Figure 2 A schematic diagram of the housing structure of the explosion-proof power supply provided in this embodiment of the utility model.

[0028] Figure 3 An isometric view of the housing structure of the explosion-proof power supply provided in this embodiment of the utility model.

[0029] Figure label:

[0030] 100. Housing; 110. Separator; 120. Battery cavity; 121. Circuit breaker; 130. Equipment cavity; 131. Through-wall terminal; 132. Charging and discharging circuit; 133. Methane power-off interlocking relay; 134. Safety barrier; 135. Battery management system; 136. Charging and discharging relay; 137. Charging and discharging interface; 200. Battery; 300. Intrinsically safe cavity; 310. Methane detection power-off interlocking module. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly 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.

[0032] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0034] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] In this invention, BMS refers to Battery Management System 135. The Battery Management System 135 (BMS) improves the safety, efficiency, and lifespan of lithium-ion batteries through advanced fault diagnosis technology. Furthermore, it incorporates online and offline state observers for fault diagnosis, and a sensitivity-based nonlinear model predictive control strategy to achieve optimized charging management of the battery pack, especially for large battery packs, ensuring real-time performance and safety.

[0037] Coal mine longwall faces cover vast areas, requiring inspection robots to be equipped with high-capacity, high-power explosion-proof power supplies to meet the safety requirements of underground mining and the robot's extended operating range. Furthermore, according to the newly released "Safety Technical Requirements for Coal Mine Inspection Robots," when methane concentration exceeds limits in the underground environment, the inspection robot should automatically stop operating, and the explosion-proof power supply should be able to cut off and lock out.

[0038] Based on the above situation, in the embodiments of this utility model, an explosion-proof power supply for inspection robots is introduced to solve the problems that the power supply of existing inspection robots cannot safely cut off when methane exceeds the limit and the short battery life of inspection robots.

[0039] like Figure 1 and Figure 2 As shown, the explosion-proof power supply mainly includes a housing 100, a battery 200, a charge / discharge relay 136, and a charge / discharge interface 137.

[0040] Specifically, the housing 100 has a battery cavity 120 and a device cavity 130 located on both sides of the partition 110 and completely isolated from each other. Both the battery cavity 120 and the device cavity 130 have good sealing properties. The battery 200 is installed inside the battery cavity 120 and cannot contact the outside. The charge / discharge relay 136 is installed inside the device cavity 130. The charge / discharge interface 137 is located on the side wall of the device cavity 130.

[0041] The partition 110 is provided with a through-wall terminal 131, which connects the battery 200, the charge / discharge relay 136, and the charge / discharge interface 137 located in different chambers in series to the charge / discharge circuit 132. The outer side of the housing 100 is provided with an intrinsically safe cavity 300 equipped with a methane detection power-off interlocking module 310, which is used to control the disconnection of the charge / discharge circuit 132 from the inside of the power supply.

[0042] In this embodiment, the intrinsically safe cavity 300 is integrated with the power supply. The methane detection and power-off interlocking module 310 within the intrinsically safe cavity 300 can cut off the power supply internally when methane levels exceed limits, thereby eliminating the risk of the power supply outputting current or even generating electrical sparks that could lead to safety accidents. Furthermore, the intrinsically safe cavity 300 of this explosion-proof power supply is small in size, simple in structure, and lightweight, eliminating the need for the inspection robot to bear additional loads and significantly improving its endurance.

[0043] Based on the above embodiments, this utility model introduces an explosion-proof power supply for inspection robots.

[0044] The equipment cavity 130 is equipped with a methane power-off interlocking relay 133. The side wall of the equipment cavity 130 is provided with a through-wall terminal 131, which electrically connects the methane detection power-off interlocking module 310 to the methane power-off interlocking relay 133.

[0045] Furthermore, a safety isolation barrier 134 is also provided inside the equipment cavity 130. The safety isolation barrier is located between the through-wall terminal 131 and the methane power-off interlocking relay 133.

[0046] Based on the above embodiments, this utility model introduces an explosion-proof power supply for an inspection robot. The device cavity 130 is also equipped with a battery management system 135 (BMS) for controlling the automatic disconnection or connection of the charging / discharging relay 136 to the charging / discharging circuit 132.

[0047] Based on the above embodiments, this utility model introduces an explosion-proof power supply for an inspection robot. A circuit breaker 121 is provided on the side wall of the battery compartment 120, and the circuit breaker 121 is connected in series with the charging / discharging circuit 132.

[0048] Based on the above embodiments, this utility model introduces an explosion-proof power supply for an inspection robot. The methane power-off interlocking relay 133 is located inside the equipment cavity 130, closer to the charging / discharging interface 137 than the charging / discharging relay 136.

[0049] Specifically, the methane power-off lockout relay 133 is placed after the charge / discharge relay 136, so that when the methane power-off lockout relay 133 cuts off the output, it will not affect the BMS (Battery Management System 135) control of the charge / discharge relay 136 or the protection of the battery cell.

[0050] Specifically, the methane detection power-off interlocking module 310 inside the intrinsically safe cavity 300 controls the methane power-off interlocking relay 133 inside the equipment cavity 130 via the through-wall terminal 131 and the safety isolation barrier 134. When the explosion-proof power supply is working in the coal mine, if the methane concentration in the environment is lower than the safe concentration, the methane detection power-off interlocking module 310 controls the methane power-off interlocking relay 133 to close. The power supply then charges and discharges normally through the charge and discharge relay 136 under the control of the BMS (Battery Management System 135).

[0051] When the methane concentration in the environment exceeds the safe concentration, the methane detection power-off interlock module 310 controls the methane power-off interlock relay 133 to disconnect. At this time, the explosion-proof power supply cuts off power supply to external devices and its own charging, and cannot be manually unlocked. Only when the methane concentration in the environment is detected to be below the safe recovery value can the methane detection power-off interlock module 310 automatically unlock, allowing the explosion-proof power supply to resume normal power supply. This achieves the methane detection and power-off interlock function of the explosion-proof power supply.

[0052] Based on the above embodiments, this utility model introduces an explosion-proof power supply for an inspection robot. The intrinsically safe cavity 300 is fixedly connected to the side wall of the housing 100 opposite to the battery cavity 120.

[0053] Based on the above embodiments, this utility model introduces an explosion-proof power supply for an inspection robot. The intrinsically safe cavity 300 is equipped with a methane sensor for detecting the methane concentration in the environment. When the methane concentration is below a safe concentration, the methane sensor controls the methane power-off interlocking relay 133 to close.

[0054] Alternatively, the methane sensor can control the methane power-off lockout relay 133 to disconnect when the methane concentration is not lower than the safe concentration.

[0055] Furthermore, the intrinsically safe cavity 300 adopts an IB protection rating. The IB protection rating refers to the requirement that the intrinsically safe cavity's construction, performance, testing methods, and inspection rules comply with the provisions of the national standard GB / T 3836.4—2021 "Explosive Atmospheres – Part 4: Equipment Protected by Intrinsically Safe 'i'".

[0056] In addition, this utility model also provides an inspection robot. The inspection robot is powered by any of the explosion-proof power supplies described above. Therefore, the inspection robot does not need to bear an additional load, greatly improving its battery life.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications 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.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof power supply for an inspection robot, characterized in that, include: The housing (100) has a battery cavity (120) and an equipment cavity (130) located on both sides of the partition (110) and completely isolated from each other. A storage battery (200) is installed inside the battery cavity (120); A charge / discharge relay (136) is installed inside the device cavity (130); A charging / discharging interface (137) is disposed on the side wall of the device cavity (130); The partition (110) is provided with a through-wall terminal (131) to connect the battery (200), the charging and discharging relay (136) and the charging and discharging interface (137) located in different chambers in series in the charging and discharging circuit (132). The outer side of the housing (100) is provided with an intrinsically safe cavity (300) equipped with a methane detection power-off interlocking module (310) for controlling the disconnection of the charging and discharging circuit (132) from the inside of the power supply.

2. The explosion-proof power supply for an inspection robot according to claim 1, characterized in that, The equipment cavity (130) is provided with a methane power-off lockout relay (133), and the side wall of the equipment cavity (130) is provided with the through-wall terminal (131) to electrically connect the methane detection power-off lockout module (310) to the methane power-off lockout relay (133).

3. The explosion-proof power supply for an inspection robot according to claim 2, characterized in that, The equipment cavity (130) is also provided with a safety isolation barrier (134), which is located between the through-wall terminal (131) and the methane power-off lockout relay (133).

4. The explosion-proof power supply for an inspection robot according to claim 3, characterized in that, The device cavity (130) is also equipped with a battery management system (135) for controlling the charging and discharging relay (136) to automatically disconnect or connect the charging and discharging circuit (132).

5. The explosion-proof power supply for an inspection robot according to any one of claims 1-4, characterized in that, The side wall of the battery cavity (120) is provided with a circuit breaker (121), which is connected in series with the charging and discharging circuit (132).

6. The explosion-proof power supply for an inspection robot according to any one of claims 2-4, characterized in that, The methane power-off lockout relay (133) is located inside the equipment cavity (130) and closer to the charging / discharging interface (137) than the charging / discharging relay (136).

7. The explosion-proof power supply for an inspection robot according to any one of claims 1-4, characterized in that, The intrinsically safe cavity (300) is fixedly connected to the side wall of the housing (100) opposite to the battery cavity (120).

8. The explosion-proof power supply for an inspection robot according to claim 7, characterized in that, The intrinsically safe cavity (300) is equipped with a methane sensor for detecting the methane concentration in the environment. When the methane concentration is lower than the safe concentration, the methane sensor controls the methane power-off lockout relay (133) to close. Alternatively, the methane sensor controls the methane power-off lockout relay (133) to disconnect when the methane concentration is not lower than the safe concentration.

9. The explosion-proof power supply for an inspection robot according to claim 8, characterized in that, The intrinsically safe cavity (300) is equipped with an IB protection rating.

10. An inspection robot, characterized in that, The explosion-proof power supply for the inspection robot as described in any one of claims 1-9 is used for power supply.

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