An explosion-proof power control device

Abstract

This utility model provides an explosion-proof power control device, relating to the field of explosion-proof industrial vehicle technology. It includes a sealed explosion-proof power control enclosure, divided into two chambers: Chamber 1 and Chamber 2. Chamber 1 houses a lithium battery pack and a lithium battery fuse electrically connected to the pack. Chamber 2 houses a BMS management system, a lithium battery control contactor group, and a vehicle control system, all electrically connected in sequence. The lithium battery pack is electrically connected to the lithium battery control contactor group. Compared to traditional separate structures, the integrated chamber design of this explosion-proof power control enclosure reduces safety hazards caused by component connections, enabling power supply and control of the entire vehicle in explosive gas-powder composite environments. The simple structural design eliminates the need for complex assembly processes, reducing manufacturing costs. It is suitable for IIB or IIIC level gas-powder composite explosion-proof environments, expanding its application range and demonstrating strong versatility.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof industrial vehicle technology, and in particular to an explosion-proof power control device. Background Technology

[0002] In explosive hazardous locations in petroleum, chemical, pharmaceutical, or food processing plants, explosion-proof industrial vehicles are commonly used for handling flammable and explosive materials. Currently, most of these explosion-proof vehicles use lead-acid batteries as their power source. However, lead-acid batteries have drawbacks such as low energy density, short lifespan, and long charging time. Specifically, low energy density limits the vehicle's range, and frequent charging severely impacts production efficiency; short lifespan necessitates frequent battery replacements, increasing operating costs.

[0003] To address these issues, most explosion-proof vehicles currently use lithium batteries instead of lead-acid batteries as their power source. However, due to the inherent safety problems of lithium batteries, which pose a potential risk of fire or explosion, lithium batteries are usually installed separately from other control devices.

[0004] The existing explosion-proof vehicles have separate control and power sources, requiring the design of a dedicated explosion-proof control enclosure. This increases design and manufacturing costs and complicates the vehicle structure. This separation leads to cumbersome internal wiring, increasing the probability of electrical faults. Furthermore, maintenance and troubleshooting are time-consuming and labor-intensive due to the separate enclosures for control and power. The additional explosion-proof control enclosure occupies valuable vehicle space, limiting maneuverability in confined and hazardous areas and further reducing operational efficiency. Moreover, traditional explosion-proof structures offer limited protection in IIB and IIIC hazardous environments with combined gas and powder hazards, failing to meet the operational requirements of these explosion-proof environments. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an explosion-proof power control device capable of supplying power and controlling the entire vehicle in explosive gas-powder composite environments. Compared to traditional separate structures, the integrated cavity design of this explosion-proof power control box reduces safety hazards caused by component connections. Furthermore, the structural design of this explosion-proof power control device is simple, requiring no complex assembly processes, thus reducing manufacturing costs. It is suitable for IIB or IIIC level gas-powder composite explosion-proof environments. Compared to commonly available IIIB level explosion-proof products on the market, this explosion-proof power control device can operate stably in more dangerous and complex environments, expanding its application range and demonstrating strong versatility.

[0006] In view of this, the present invention provides an explosion-proof power control device, comprising a sealed explosion-proof power control box, the explosion-proof power control box being divided into a first cavity and a second cavity, the first cavity containing a lithium battery pack and a lithium battery fuse electrically connected to the lithium battery pack, and the second cavity containing a BMS management system, a lithium battery control contactor group, and a vehicle control system electrically connected in sequence; the lithium battery pack is electrically connected to the lithium battery control contactor group.

[0007] According to an embodiment of this utility model, an explosion-proof power control device has at least the following technical effects: This explosion-proof power control device adopts an explosion-proof treatment, integrating a lithium battery pack, a BMS management system, and a vehicle control device. Compared to traditional separate structures, this reduces safety hazards caused by component connections. Simultaneously, the high-level explosion-proof enclosure design effectively resists dangers in explosive environments, providing reliable safety assurance for the operation of explosion-proof industrial vehicles. The protection level of this explosion-proof power control device is IP65, enabling its use in gas-powder composite explosion environments with a minimum level of IIB and IIIC. This is far superior to existing control devices with an explosion-proof level of only IIIB, meeting the requirements of various explosion-proof industrial electric vehicles in Zone 1 explosive gas and conductive dust explosion environments, thus improving the product's market adaptability and versatility. By placing the vehicle control system and the BMS management system in the same cavity, the connection lines between the two are greatly simplified, facilitating mutual detection and forming the control core of the entire explosion-proof power control device, and even the control core of the explosion-proof industrial vehicle. The BMS management system provides the necessary guarantee for stable power supply to the entire explosion-proof power control device. Equipped with a lithium battery power supply unit, which boasts high energy density and excellent charge / discharge performance, the explosion-proof industrial vehicle achieves long driving range. It also supports fast charging, reducing charging time and improving operational efficiency. Furthermore, the BMS management system monitors the lithium battery pack status in real time and precisely controls the charging and discharging process, providing a necessary guarantee for stable power supply to the entire explosion-proof power control device, further enhancing the reliability and stability of the vehicle control system. During installation and wiring of the explosion-proof industrial vehicle, simply connect the load wires directly to the explosion-proof power control device to complete the installation; there is no need to add an additional explosion-proof control box for a separate vehicle control system, making the structure of the explosion-proof industrial vehicle more compact. The equipped lithium battery power supply unit, with its high energy density and excellent charge / discharge performance, achieves long driving range and supports fast charging, reducing charging time and improving operational efficiency.

[0008] According to some embodiments of this utility model, the partition between cavity one and cavity two is a double-layer explosion-proof partition, and the interlayer between the double-layer explosion-proof partition is filled with explosion-proof putty or flame-retardant heat-insulating material. When one of the cavities in cavity one or cavity two explodes, the double-layer explosion-proof partition and the filling material can effectively block the explosion shock wave and heat transfer, prevent the other cavity from being affected, reduce damage to internal components, and ensure the critical functions of the vehicle control system.

[0009] In some specific embodiments of this utility model, an explosion-proof lithium battery pack cover is bolted to the upper surface of cavity one, and an explosion-proof control device cover is bolted to the upper surface of cavity two; a cable lead-out device one is provided on the cavity wall of cavity one; and a cable lead-out device two is provided on the cavity wall of cavity two. The explosion-proof lithium battery pack cover and the explosion-proof control device cover create a sealed space with both explosion-proof and outer shell protection for the explosion-proof power control box, improving explosion-proof safety.

[0010] In some specific embodiments of this utility model, a battery charging base and an explosion-proof key switch are installed on the explosion-proof control device cover; the battery charging base is electrically connected to the BMS management system through cable lead-out device two; the BMS management system is electrically connected to the lithium battery pack through cable lead-out device two and cable lead-out device one; the lithium battery pack is electrically connected to the lithium battery control contactor group through cable lead-out device one and cable lead-out device two; the explosion-proof key switch is electrically connected to the BMS management system through cable lead-out device two.

[0011] In some specific embodiments of this utility model, the cable lead-out device one and / or cable lead-out device two adopt a multi-layer sealing structure, and the interior of the sealing structure is provided with an explosion-proof gland and a sealing rubber ring. The explosion-proof gland can secure the cable and prevent loosening; the sealing rubber ring ensures the seal between the cable and the explosion-proof power control box, preventing explosive gases or dust from entering the interior of the explosion-proof power control box. In addition, it can also add an anti-pull-out design to avoid the danger caused by accidental cable pull-out during the operation of explosion-proof industrial vehicles.

[0012] In some specific embodiments of this utility model, the sealing joint between the explosion-proof lithium battery pack cover and cavity one is made of silicone rubber sealing strip; and / or the sealing joint between the explosion-proof control device cover and cavity two is made of silicone rubber sealing strip. Silicone rubber sealing strip has good elasticity, weather resistance, and chemical stability, maintaining good sealing performance even in high and low temperature environments. It effectively prevents explosive gases and dust from penetrating into the explosion-proof power control box, while simultaneously enhancing the tightness of the connection between the explosion-proof lithium battery pack cover and cavity one and / or the explosion-proof control device cover and cavity two.

[0013] In some specific embodiments of this utility model, a pressure balancing device is installed on the explosion-proof power control box. When the pressure inside the explosion-proof power control box becomes unbalanced due to temperature changes or internal pressure fluctuations, the pressure balancing device can automatically open to balance the pressure inside and outside the explosion-proof power control box, preventing damage to the sealing structure of the explosion-proof power control box due to excessive pressure difference; at the same time, it prevents external hazardous substances from entering the explosion-proof power control box and maintains the structural integrity of the explosion-proof power control box.

[0014] In some specific embodiments of this invention, an explosion-proof gas concentration sensor, as well as a temperature sensor and a pressure sensor, are installed inside the explosion-proof power control box. The gas concentration sensor monitors in real time whether there is a leak of explosive gas inside the explosion-proof power control box; the temperature and pressure sensors monitor the environmental parameters inside the explosion-proof power control box. Once the gas concentration sensor or the temperature and pressure sensor detects abnormal data, the vehicle control system immediately issues an alarm and automatically takes emergency measures such as cutting off the power supply to prevent the risk of explosion.

[0015] In some specific embodiments of this utility model, a detachable insulating protective bracket is provided between the lithium battery fuse and the lithium battery pack. The insulating protective bracket is provided with a slot for fixing the lithium battery fuse and a wire through hole for wires to pass through, effectively isolating the lithium battery fuse from the lithium battery pack, preventing accidental short circuits, and facilitating the installation and replacement of the lithium battery fuse.

[0016] In some specific embodiments of this utility model, a glass observation window is provided on the upper surface of the explosion-proof power control box. Through the glass observation window, the state inside the cavity can be monitored in real time, facilitating timely response measures.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a front view of the structure and a partial cross-sectional view of the glass observation window of an explosion-proof power control device according to this utility model.

[0020] Figure 2This is a top view of the structure of an explosion-proof power control device and a partial cross-sectional view of the second cable lead-out device according to the present invention.

[0021] Figure 3 for Figure 1 AA cross-section view.

[0022] Explanation of reference numerals: 100, Explosion-proof power control box; 101, Cavity 1; 1011, Explosion-proof lithium battery pack cover; 102, Cavity 2; 1021, Cable lead-out device 2; 1022, Explosion-proof control device cover; 103, Bolt;

[0023] 200. Lithium battery pack; 201. Lithium battery fuse; 202. Labels and nameplates;

[0024] 300. BMS Management System; 301. Lithium Battery Control Contactor Group; 302. Vehicle Control System; 303. Battery Charging Base; 304. Explosion-proof Key Switch; 305. Glass Observation Window.

[0025] The purpose, features, and advantages of this accompanying drawing will be further explained in conjunction with the embodiments and with reference to the accompanying drawing. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model.

[0027] Obviously, the accompanying drawings described below are merely some examples or embodiments of this utility model. Those skilled in the art can apply this utility model to other similar scenarios without any creative effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this utility model, any changes to the design, manufacturing, or production methods based on the disclosed technical content are merely conventional technical means and should not be construed as insufficient disclosure of this utility model.

[0028] However, there may be instances where unnecessary detailed descriptions are omitted. For example, detailed descriptions of well-known matters or repetitive descriptions of essentially the same structures may be omitted. This is to avoid making the following description unnecessarily lengthy and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this utility model and are not intended to limit the subject matter of the claims.

[0029] The terms "connection," "linked," and "coupled" used in this utility model are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Multiple" or "several" in this utility model refers to two or more. The character " / " generally indicates an "or" relationship between the preceding and following objects. The terms "first," "second," and "third" used in this utility model are merely to distinguish similar objects and do not represent a specific order of objects.

[0030] See Figures 1 to 3 As shown, the present invention discloses an explosion-proof power control device, comprising a sealed explosion-proof power control box 100, which is divided into a first cavity 101 and a second cavity 102. The first cavity 101 contains a lithium battery pack 200 and a lithium battery fuse 201 electrically connected to the lithium battery pack 200. The second cavity 102 contains a BMS management system 300, a lithium battery control contactor group 301, and a vehicle control system 302, which are electrically connected in sequence. The lithium battery pack 200 is electrically connected to the lithium battery control contactor group 301.

[0031] In this embodiment, the explosion-proof power control enclosure 100 is the main core component. It is a sealed enclosure of explosion-proof type and shell protection type, manufactured in accordance with the explosion-proof type specified in GB / T3836 standard. The explosion-proof power control enclosure 100 is divided into cavity one 101 and cavity two 102, which are adjacent, connected and independent spaces. The shell of the explosion-proof power control enclosure 100 is made of steel plate, cast steel or cast iron, and the shell can withstand a test pressure of 1.5MPa to 2MPa to ensure reliable operation in explosive environments. Cavity one 101 carries the lithium battery pack 200 and the lithium battery fuse 201. The lithium battery fuse 201 provides safety protection for the lithium battery pack 200. In the event of a short circuit or abnormal situation, the lithium battery fuse 201 cuts off the power source in time to ensure the safety of the vehicle control system 302. The cavity 2 102 houses the BMS management system 300, the lithium battery control contactor group 301, and the vehicle control system 302. The lithium battery pack 200 is electrically connected to the lithium battery control contactor group 301.

[0032] Specifically, the BMS management system 300 performs a self-test. If the self-test is successful, the entire lithium battery contactor group closes, and the lithium battery pack 200 continuously supplies power to the vehicle control system 302, thereby achieving vehicle control. If an abnormality occurs, the power supply is stopped immediately. The vehicle control system 302 and the BMS management system 300 are housed in the same cavity, greatly simplifying the connection between them. This not only facilitates mutual detection but also forms the control core of the entire explosion-proof power control device, and even the control core of the explosion-proof industrial vehicle. During the installation and wiring process of the explosion-proof industrial vehicle, only the load wires need to be directly connected to this explosion-proof power control device to complete the installation. There is no need to add an additional explosion-proof control box to install a separate vehicle control system 302, making the structure of the explosion-proof industrial vehicle more compact. The BMS management system 300 provides the necessary guarantee for the stable power supply of the entire explosion-proof power control device. The equipped lithium battery power supply, with its high energy density and excellent charge and discharge performance, enables the explosion-proof industrial vehicle to have a long driving range, while supporting fast charging, reducing vehicle charging waiting time and improving operating efficiency. Furthermore, the BMS management system 300 monitors the status of the lithium battery pack 200 in real time and precisely controls the charging and discharging process of the lithium battery pack 200, providing the necessary guarantee for stable power supply to the entire explosion-proof power control device, and further improving the reliability and stability of the vehicle control system 302.

[0033] Furthermore, this explosion-proof power control device adopts an explosion-proof treatment, integrating the lithium battery pack 200, BMS management system 300, and vehicle control device. Compared to traditional separate structures, this reduces safety hazards caused by component connections. Simultaneously, the high-level explosion-proof enclosure design effectively resists dangers in explosive environments, providing reliable safety assurance for the operation of explosion-proof industrial vehicles. This explosion-proof power control device has an IP65 protection rating, enabling its use in gas-powder composite explosion environments with a minimum rating of IIB and IIIC. This is far superior to existing control devices with an explosion-proof rating of only IIIB, meeting the requirements of various explosion-proof industrial electric vehicles in Zone 1 explosive gas and conductive dust explosion environments, thus improving the product's market adaptability and versatility.

[0034] In some specific embodiments of this utility model, the partition between cavity one 101 and cavity two 102 is a double-layer explosion-proof partition, and the interlayer between the double-layer explosion-proof partition is filled with explosion-proof putty or flame-retardant heat insulation material.

[0035] In this embodiment, when one of the cavities 101 or 102 explodes, the double-layer explosion-proof partition and filling material can effectively block the explosion shock wave and heat transfer, prevent the other cavity from being affected, reduce damage to internal components, and ensure the key functions of the vehicle control system 302.

[0036] In some specific embodiments of this utility model, an explosion-proof lithium battery pack cover plate 1011 is installed on the upper surface of cavity one 101 by bolts 103, and an explosion-proof control device cover plate 1022 is installed on the upper surface of cavity two 102 by bolts 103; a cable lead-out device one (not shown in the figure) is provided on the cavity wall of cavity one 101; a cable lead-out device two 1021 is provided on the cavity wall of cavity two 102. The explosion-proof lithium battery pack cover plate 1011 and the explosion-proof control device cover plate 1022 form an explosion-proof and shell-protected sealed space for the explosion-proof power control box 100, improving explosion-proof safety; the cable lead-out device one and the cable lead-out device two 1021 are used to lead out the cable, while ensuring the airtightness of the explosion-proof power control box 100.

[0037] In some specific embodiments of this utility model, a battery charging base 303 and an explosion-proof key switch 304 are installed on the explosion-proof control device cover plate 1022; the battery charging base 303 is electrically connected to the BMS management system 300 through cable lead-out device two 1021, the BMS management system 300 is electrically connected to the lithium battery pack 200 through cable lead-out device two 1021 and cable lead-out device one, and the lithium battery pack 200 is electrically connected to the lithium battery control contactor group 301 through cable lead-out device one and cable lead-out device two 1021; the explosion-proof key switch 304 is electrically connected to the BMS management system 300 through cable lead-out device two 1021.

[0038] In some specific embodiments of this utility model, cable lead-out device one and / or cable lead-out device two 1021 adopt a multi-layer sealing structure, and the interior of the sealing structure is provided with an explosion-proof gland and a sealing rubber ring.

[0039] In this embodiment, the cables led out by cable lead-out device one and cable lead-out device two 1021 can be securely fastened using explosion-proof glands to prevent loosening; the sealing ring ensures the airtightness between the cable and the explosion-proof power control box 100, preventing explosive gases or dust from entering the interior of the explosion-proof power control box 100. Furthermore, an anti-pull-out design can be added to prevent the cable from being accidentally pulled out and causing danger during the operation of the explosion-proof industrial vehicle.

[0040] In some specific embodiments of this utility model, the sealing joint between the explosion-proof lithium battery pack cover 1011 and the cavity 101 is made of silicone rubber sealing strip; and / or the sealing joint between the explosion-proof control device cover 1022 and the cavity 2102 is made of silicone rubber sealing strip.

[0041] In this embodiment, the silicone rubber sealing strip has good elasticity, weather resistance and chemical stability, and can still maintain a good sealing effect in high and low temperature environments, effectively preventing explosive gases and dust from penetrating into the explosion-proof power control box 100, while enhancing the tightness of the connection between the explosion-proof lithium battery pack cover 1011 and cavity one 101 and / or the explosion-proof control device cover 1022 and cavity two 102.

[0042] In some specific embodiments of this utility model, a pressure balancing device is installed on the explosion-proof power control box 100. In one specific embodiment, the pressure balancing device is an explosion-proof breather valve; when the pressure inside the explosion-proof power control box 100 becomes unbalanced due to temperature changes or internal pressure fluctuations, the explosion-proof breather valve can automatically open to balance the pressure inside and outside the explosion-proof power control box 100, preventing damage to the sealing structure of the explosion-proof power control box 100 due to excessive pressure difference; at the same time, it prevents external hazardous substances from entering the explosion-proof power control box 100 and maintains the structural integrity of the explosion-proof power control box 100.

[0043] In some specific embodiments of this utility model, an explosion-proof gas concentration sensor, a temperature sensor, and a pressure sensor are installed inside the explosion-proof power control box 100.

[0044] In this embodiment, a gas concentration sensor monitors in real time whether there is any leaking explosive gas inside the explosion-proof power control box 100; temperature and pressure sensors monitor the internal environmental parameters of the explosion-proof power control box 100. Once the gas concentration sensor or temperature and pressure sensor detects abnormal data, the vehicle control system 302 immediately issues an alarm and automatically takes emergency measures such as cutting off the power supply to prevent the risk of explosion in advance.

[0045] In some specific embodiments of this utility model, a detachable insulating protective bracket is provided between the lithium battery fuse 201 and the lithium battery pack 200.

[0046] In this embodiment, the insulating protective bracket is made of polytetrafluoroethylene. The insulating protective bracket is provided with a slot for fixing the lithium battery fuse 201 and a wire hole for wires to pass through. The above structure effectively isolates the lithium battery fuse 201 from the lithium battery pack 200, preventing accidental short circuits, and at the same time facilitates the installation and replacement of the lithium battery fuse 201.

[0047] In some specific embodiments of this utility model, a glass observation window 305 is provided on the upper surface of the explosion-proof power control box 100.

[0048] In this embodiment, the state inside cavity 102 can be monitored in real time through the glass observation window 305, which facilitates timely response measures.

[0049] In some specific embodiments of this utility model, a nameplate and a label 202 are installed on the explosion-proof power control box 100 for recording information.

[0050] It should be noted that this utility model is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and function as the technical concept within the scope of this utility model are included within the technical scope of this utility model. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, are also included within the scope of this utility model without departing from the spirit of this utility model.

Claims

1. An explosion-proof power control device, characterized in that, The device includes a sealed explosion-proof power control enclosure (100), which is divided into a first cavity (101) and a second cavity (102). The first cavity (101) contains a lithium battery pack (200) and a lithium battery fuse (201) electrically connected to the lithium battery pack (200). The second cavity (102) contains a BMS management system (300), a lithium battery control contactor group (301), and a vehicle control system (302) that are electrically connected in sequence. The lithium battery pack (200) is electrically connected to the lithium battery control contactor group (301).

2. The explosion-proof power control device according to claim 1, characterized in that, The partition between cavity one (101) and cavity two (102) is a double-layer explosion-proof partition, and the interlayer between the double-layer explosion-proof partition is filled with explosion-proof putty or flame-retardant heat insulation material.

3. The explosion-proof power control device according to claim 1, characterized in that, An explosion-proof lithium battery pack cover plate (1011) is installed on the upper surface of cavity one (101) by bolts (103), and an explosion-proof control device cover plate (1022) is installed on the upper surface of cavity two (102) by bolts (103); a cable lead-out device one is provided on the cavity wall of cavity one (101); and a cable lead-out device two (1021) is provided on the cavity wall of cavity two (102).

4. The explosion-proof power control device according to claim 3, characterized in that, A battery charging socket (303) and an explosion-proof key switch (304) are installed on the explosion-proof control device cover plate (1022); the battery charging socket (303) is electrically connected to the BMS management system (300) through cable lead-out device two (1021), the BMS management system (300) is electrically connected to the lithium battery pack (200) through cable lead-out device two (1021) and cable lead-out device one, the lithium battery pack (200) is electrically connected to the lithium battery control contactor group (301) through cable lead-out device one and cable lead-out device two (1021); the explosion-proof key switch (304) is electrically connected to the BMS management system (300) through cable lead-out device two (1021).

5. The explosion-proof power control device according to claim 3, characterized in that, The cable lead-out device one and / or cable lead-out device two (1021) adopt a multi-layer sealing structure, and the interior of the sealing structure is provided with an explosion-proof gland and a sealing rubber ring.

6. The explosion-proof power control device according to claim 3, characterized in that, The seal between the explosion-proof lithium battery pack cover (1011) and cavity one (101) is made of silicone rubber sealing strip; and / or the seal between the explosion-proof control device cover (1022) and cavity two (102) is made of silicone rubber sealing strip.

7. The explosion-proof power control device according to claim 1, characterized in that, A pressure balancing device is installed on the explosion-proof power control box (100).

8. The explosion-proof power control device according to claim 1, characterized in that, An explosion-proof gas concentration sensor, as well as a temperature sensor and a pressure sensor, are installed inside the explosion-proof power control box (100).

9. The explosion-proof power control device according to claim 1, characterized in that, A detachable insulating protective bracket is provided between the lithium battery fuse (201) and the lithium battery pack (200).

10. An explosion-proof power control device according to any one of claims 1 to 9, characterized in that, A glass observation window (305) is provided on the upper surface of the explosion-proof power control box (100).

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