Explosion-proof power supply device

Abstract

An explosion-proof power supply device comprises a lead-acid battery unit and a power supply cable which is respectively connected with a positive pole and a negative pole of the battery unit, the junction of the positive pole and the power supply cable and the junction of the negative pole and the power supply cable are respectively encapsulated, and the explosion-proof power supply device comprises a battery box for accommodating the lead-acid battery unit, the battery box comprises a box body and a box cover which covers and is fixed on the box body, and a plurality of exhaust holes are respectively formed in the box body and / or the box cover, so that hydrogen and / or oxygen separated out from the lead-acid battery unit can be conveniently exhausted outwards. The electric contacts between the lead-acid battery units and the cables are subjected to spark-proof and explosion-proof treatment, and a plurality of exhaust holes are formed in the battery box, so that hydrogen and / or oxygen separated out by the lead-acid battery units can be discharged outwards in time, and explosion is prevented; and secondly, the battery box can effectively isolate open fire, so that the situation that the open fire directly combusts the lead-acid battery unit to cause leakage of the sulfuric acid electrolyte, so that the fire behavior is further intensified and toxic gas is generated is avoided.

Description

Technical Field

[0001] The utility model relates to an explosion-proof power supply device. Background Art

[0002] Existing explosion-proof power supply devices, such as those available on the market, place the entire lead-acid battery in an explosion-proof box and seal it, but its use is not safe because the battery itself will release hydrogen and oxygen during use or charging. As the concentration of hydrogen and oxygen in the box increases, it may explode when exposed to high temperature.

[0003] Another example is an explosion-proof battery developed by our company in the early stage, with the patent publication number CN217768803U. It does not encapsulate the entire lead-acid battery in a flameproof package, but performs local spark contact explosion-proof treatment on the electrical contacts between the lead-acid battery and the cable. The hydrogen and oxygen released during use can be dispersed in time, and the structure is simple, which is suitable for use in explosion-proof places where hydrogen and oxygen release are allowed. However, if there is an open flame in the surrounding environment, the lead-acid battery shell will be burned through, and the sulfuric acid electrolyte in the lead-acid battery may leak out. The sulfuric acid electrolyte will further intensify the fire and produce toxic gases, which also poses certain safety hazards.

[0004] Therefore, it is necessary to design a safer explosion-proof power supply device that can be used in explosion-proof places where hydrogen and oxygen are evolved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an explosion-proof power supply device.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an explosion-proof power supply device, which includes a lead-acid battery unit, and power cables connected to the positive pole and the negative pole of the battery unit respectively, and the connections between the positive pole and the negative pole and the power cable are respectively sealed. The explosion-proof power supply device includes a battery box for accommodating the lead-acid battery unit, and the battery box includes a box body and a box cover arranged and fixed on the box body. A plurality of exhaust holes are respectively opened on the box body and / or the box cover to facilitate the discharge of hydrogen and / or oxygen released from the lead-acid battery unit to the outside.

[0007] In certain embodiments, the lead-acid battery unit includes a plurality of lead-acid batteries connected in series via a cable, and each series connection joint is encapsulated.

[0008] In certain embodiments, a battery ring is integrally formed on the inner bottom side wall of the box body, and a gap space is formed between the battery ring and the side surrounding wall of the box body.

[0009] In certain embodiments, a plurality of the lead-acid batteries are arranged side by side in sequence within the battery ring, and a POM spacing and positioning block is provided at the bottom between each two adjacent lead-acid batteries.

[0010] In certain embodiments, a bulge transmission body is arranged in the gap space between at least one side of the lead-acid battery cell and the corresponding side wall of the box body, the bulge transmission body has a flat reminder pin rod, a bulge reminder hole is arranged on the side wall of the box body, the reminder pin rod is inserted into the bulge reminder hole, and an elastic member for pushing the bulge transmission body toward the side of the lead-acid battery cell is arranged between the bulge transmission body and the side wall of the box body. When the lead-acid battery cell swells, the bulge transmission body overcomes the elastic force of the elastic member, thereby causing the reminder pin rod to extend out of the bulge reminder hole.

[0011] In certain embodiments, the explosion-proof power supply device further comprises a battery positioning mechanism for securing the plurality of lead-acid batteries in the housing.

[0012] In certain embodiments, the battery positioning mechanism comprises a stainless steel pressing strip pressed on all lead-acid batteries, and the stainless steel pressing strip is fixed to the bottom wall of the box body by a plurality of screws.

[0013] In certain embodiments, the box cover has an explosion-proof cable clamping sealing joint for passing installation cables, and / or an explosion-proof junction box capable of introducing the power cable and used for connecting with external input cables.

[0014] In certain embodiments, an upper cavity space is formed between the lead-acid battery unit and the box cover, and a plurality of exhaust holes are disposed on the box cover and / or on the corresponding side walls of the box body around the upper cavity space.

[0015] In certain embodiments, the battery box is made of stainless steel or carbon steel, handles are provided on opposite sides of the box cover, and the bottom edge of the box body has a battery installation positioning edge.

[0016] The scope of the utility model is not limited to the technical solutions formed by the specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0017] Due to the application of the above technical scheme, the utility model has the following advantages compared with the prior art: first, the lead-acid battery unit is placed in the battery box, the electrical contacts between the lead-acid battery unit and the cable are treated with spark-proof and explosion-proof treatment, and a plurality of exhaust holes are provided on the battery box to facilitate the timely discharge of hydrogen and / or oxygen released from the lead-acid battery unit to prevent explosion; secondly, the battery box can effectively isolate open flames, avoid leakage of sulfuric acid electrolyte caused by direct combustion of the lead-acid battery unit by open flames, thereby further aggravating the fire and producing toxic gases, and the explosion-proof power supply device is suitable for use in places where hydrogen and oxygen release are allowed and is safer during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a top view schematic diagram of an explosion-proof power supply device;

[0019] Figure 2 The schematic diagram of the box cover being removed is shown in the figure;

[0020] Figure 3 for Figure 1 AA section view;

[0021] Figure 4 This is a front view schematic diagram of an explosion-proof power supply device;

[0022] Figure 5 for Figure 3 The enlarged view of point B;

[0023] Wherein: 1. battery box; 1a. exhaust hole; 1b. gap space; 1c. upper cavity space; 11. box body; 111. battery ring edge; 12. box cover; 13. explosion-proof cable clamping sealing joint; 14. explosion-proof junction box; 15. handle; 16. installation positioning edge; 2. lead-acid battery unit; 21. lead-acid battery; 3. battery positioning mechanism; 31. stainless steel pressure plate strip; 32. screw; 4. spacing positioning block; 5. bulge transmission body; 51. reminder pin rod; 52. bulge reminder hole. DETAILED DESCRIPTION

[0024] As shown in the accompanying drawings, an explosion-proof power supply device includes a battery box 1 composed of a box body 11 and a box cover 12 which are fixedly connected by screws, a lead-acid battery unit 2 placed in the battery box 1, and a power cable.

[0025] The lead-acid battery unit 2 includes a plurality of lead-acid batteries 21 connected in series via positive and negative electrodes of cables. Each series connection joint is encapsulated, and one end of the corresponding power cable is respectively connected to the positive electrode column and the negative electrode column of the lead-acid battery unit 2 and then encapsulated.

[0026] The power cable can be connected to the explosion-proof junction box. When in use, the external cable can be connected to the power cable in the explosion-proof junction box. The power cable can also be directly extended outward through the explosion-proof cable clamping sealing joint and then connected to the explosion-proof junction box of the relevant equipment for wiring.

[0027] A battery ring 111 is integrally formed on the inner bottom side wall of the box 11. Four lead-acid batteries 21 are arranged side by side in the battery ring 111, and a POM spacing block 4 is arranged at the bottom between each two adjacent lead-acid batteries 21, so that there is also a gap between the adjacent lead-acid batteries 21. A gap space 1b is formed between the lead-acid battery 21 and the side wall of the box 11 to provide a space for the lead-acid battery 21 to swell and spread to the surrounding area. The battery positioning mechanism 3 that stabilizes the lead-acid battery 21 includes two stainless steel pressure strips 31 pressed on all the lead-acid batteries 21, and the stainless steel pressure strips 31 are fixed to the bottom wall of the box 11 by multiple screws 32. That is, the lead-acid battery unit 2 is fixed to the bottom wall of the box 11.

[0028] A plurality of exhaust holes 1a are respectively provided on the box body 11 and the box cover 12, and an upper cavity space 1c is formed between the upper part of the lead-acid battery unit 2 and the box cover 12. The plurality of exhaust holes 1a are provided on the side wall of the box body 11 corresponding to the box cover 12 and the upper cavity space 1c, so that the hydrogen and / or oxygen exhausted from the lead-acid battery unit 2 can pass upward through the upper cavity space 1c and then be discharged outward through the exhaust holes 1a.

[0029] The battery box 1 is made of stainless steel or carbon steel, which effectively isolates open flames and further prevents the lead-acid battery 21 from leaking sulfuric acid electrolyte. After the hydrogen and oxygen in the battery box 1 are discharged, open flames are not enough to enter the battery box through the exhaust hole 1a, making it safer to use.

[0030] A bulge transmission body 5 is arranged in the gap space 1b between the two sides of the lead-acid battery unit 2 and the corresponding side wall of the box 11. The bulge transmission body 5 has a horizontal reminder pin 51. A bulge reminder hole 52 is arranged on the side wall of the box 11. The reminder pin 51 is inserted into the bulge reminder hole 52. An elastic member is arranged between the bulge transmission body 5 and the side wall of the box 11 to push the bulge transmission body 5 to the side of the lead-acid battery unit 2, that is, when the lead-acid battery 21 does not bulge, the reminder pin 51 retracts. When the lead-acid battery unit 2 bulges, the bulge transmission body 5 overcomes the elastic force of the elastic member, so that the reminder pin 51 extends out of the bulge reminder hole 52. It is convenient for users to understand the bad condition of the lead-acid battery 21 in time. Timely maintenance or replacement.

[0031] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An explosion-proof power supply device, comprising a lead-acid battery unit (2), and power cables connected to the positive pole and the negative pole of the battery unit respectively, characterized in that: The positive pole and the negative pole are respectively sealed at the connection points with the power cable. The explosion-proof power supply device comprises a battery box (1) for accommodating the lead-acid battery unit (2). The battery box (1) comprises a box body (11) and a box cover (12) arranged and fixed on the box body (11). The box body (11) and / or the box cover (12) are respectively provided with a plurality of exhaust holes (1a) to facilitate the exhaust of hydrogen and / or oxygen discharged from the lead-acid battery unit (2).

2. The explosion-proof power supply device according to claim 1, characterized in that: The lead-acid battery unit (2) comprises a plurality of lead-acid batteries (21) connected in series via cables, and each series connection joint is encapsulated.

3. The explosion-proof power supply device according to claim 2, characterized in that: A battery edge (111) is integrally formed on the inner bottom side wall of the box body (11), and a gap space (1b) is formed between the battery edge (111) and the side surrounding wall of the box body (11).

4. The explosion-proof power supply device according to claim 3, characterized in that: A plurality of the lead-acid batteries (21) are sequentially arranged side by side in the battery ring (111), and a POM spacing positioning block (4) is arranged at the bottom between each two adjacent lead-acid batteries (21).

5. The explosion-proof power supply device according to claim 3, characterized in that: A bulge transmission body (5) is arranged in a gap space (1b) between at least one side of the lead-acid battery unit (2) and the corresponding side wall of the box body (11), the bulge transmission body (5) having a horizontally placed reminder pin (51), a bulge reminder hole (52) is arranged on the side wall of the box body (11), the reminder pin (51) is inserted into the bulge reminder hole (52), and an elastic member for pushing the bulge transmission body (5) toward the side of the lead-acid battery unit (2) is arranged between the bulge transmission body (5) and the side wall of the box body (11). When the lead-acid battery unit (2) swells, the bulge transmission body (5) overcomes the elastic force of the elastic member, thereby causing the reminder pin (51) to extend out of the bulge reminder hole (52).

6. The explosion-proof power supply device according to claim 2, characterized in that: The explosion-proof power supply device further comprises a battery positioning mechanism (3) for securing the plurality of lead-acid batteries (21) in the box (11).

7. The explosion-proof power supply device according to claim 6, characterized in that: The battery positioning mechanism (3) comprises a stainless steel pressure strip (31) pressed on all the lead-acid batteries (21), and the stainless steel pressure strip (31) is fixed to the bottom wall of the box body (11) via a plurality of screws (32).

8. The explosion-proof power supply device according to claim 5, characterized in that: The box cover (12) is provided with an explosion-proof cable clamping sealing joint (13) for passing installation cables, and / or an explosion-proof junction box (14) capable of introducing the power cable and used for connecting with external input cables.

9. The explosion-proof power supply device according to claim 5, characterized in that: An upper cavity space (1c) is formed between the top of the lead-acid battery unit (2) and the box cover (12), and a plurality of exhaust holes (1a) are arranged on the corresponding side walls of the box body (11) around the box cover (12) and / or the upper cavity space (1c).

10. The explosion-proof power supply device according to claim 1, characterized in that: The battery box (1) is made of stainless steel or carbon steel, the box cover (12) is provided with handles (15) on opposite sides, and the bottom edge of the box body (11) has a battery installation positioning edge (16).

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