Flame-resistant cabinet for battery charging station

Abstract

The application discloses a kind of fireproof cabinet of battery charging seat, comprising: cabinet and setting the turnover mechanism, driving mechanism, cooling box and inductor in the cabinet;The turnover mechanism is used to support charging seat, the driving mechanism is used to drive the turnover mechanism overturn to make the charging seat drop;The cooling box is set below the turnover mechanism, for containing cooling liquid for cooling the charging seat;The inductor is used to monitor the temperature and / or smoke amount in the cabinet.The scheme of the application can effectively block the fire spread path caused by the thermal runaway of charging seat, and improve the safety from the root.

Description

Technical Field

[0001] This invention relates to the field of battery charging technology, specifically a flame-retardant cabinet for a battery charging stand. Background Technology

[0002] In automated storage and retrieval systems (AS / RS), shuttles are typically used to automate the storage, retrieval, and handling of goods, thereby improving the utilization of storage space and operational efficiency. Because shuttles operate frequently within the warehouse, they need to be charged regularly to ensure sufficient battery power. Battery replacement is a common power supply method for shuttles. When the battery is low, the low-charge battery pack is removed from the shuttle, a fully charged battery pack is installed, and the removed low-charge battery pack is placed in a charging dock for charging, ready for the next replacement.

[0003] For shuttle vehicles, their battery packs (especially lithium battery packs) pose a risk of thermal runaway and combustion during charging when using a matching charging dock. Therefore, those skilled in the art are continuously striving to find methods to improve charging safety and eliminate fire hazards. Summary of the Invention

[0004] To overcome the deficiencies in the prior art, this invention provides a flame-retardant cabinet for a battery charging dock, which effectively blocks the fire spread path caused by thermal runaway of the charging dock, thereby improving safety from the source.

[0005] This application discloses a flame-retardant cabinet for a battery charging dock, comprising: a cabinet body and a flipping mechanism, a driving mechanism, a cooling box, and a sensor disposed within the cabinet body; the flipping mechanism is used to support the charging dock, and the driving mechanism is used to drive the flipping mechanism to flip so that the charging dock falls; the cooling box is disposed below the flipping mechanism and is used to hold coolant for cooling the charging dock; the sensor is used to monitor the temperature and / or smoke volume within the cabinet body.

[0006] Specifically, the flipping mechanism includes a first fixed base, a first rotating shaft, and a support member. The first fixed base is fixedly connected to the cabinet body, the first rotating shaft is rotatably connected to the first fixed base, and the support member is fixedly connected to the first rotating shaft.

[0007] Specifically, the support member includes a support block and a support plate, the support block being fixedly connected to the first rotating shaft, and the support plate being fixedly connected to the support block.

[0008] Specifically, the drive mechanism includes a second fixed base, a second rotating shaft, a connecting base, an electric push rod, and a push block. The second fixed base is fixedly connected to the cabinet body, the connecting base is connected to the second fixed base through the second rotating shaft, one end of the push block is fixedly connected to the first rotating shaft, and the other end of the push block is movably connected to the electric push rod.

[0009] Specifically, a connecting shaft is provided on one end of the electric push rod that is connected to the push block. The axis of the connecting shaft is parallel to the axis of the first rotating shaft. A first groove is provided on one end of the push block that is connected to the electric push rod. A second groove is provided on each of the two side walls of the first groove. The end of the electric push rod is located in the first groove. Both ends of the connecting shaft are located in the two second grooves and can move within the second grooves.

[0010] Specifically, the flame-retardant cabinet also includes an emergency mechanism disposed on the cabinet body. The emergency mechanism includes a third fixed seat, a handle, a variable diameter rod, a third rotating shaft, and an elastic element. The third fixed seat is fixedly connected to the cabinet body, and at least a portion of the third fixed seat is located outside the cabinet body. The third fixed seat has an inner cavity, and the variable diameter rod passes through the inner cavity. The small diameter section of the variable diameter rod passes through the third fixed seat to connect with the handle located outside the cabinet body via the third rotating shaft. The large diameter section of the variable diameter rod passes into the cabinet body. The elastic element is sleeved on the small diameter section and abuts against the inner cavity and the end of the large diameter section. When the handle is rotated, it can drive the large diameter section of the variable diameter rod to press or release the connecting seat.

[0011] Specifically, the second fixed seat includes a connecting part for connecting with the connecting seat. The connecting part has a rounded corner on the side facing the variable diameter rod. The second rotating shaft passes through the connecting part. The axis of the second rotating shaft is offset from the center of gravity of the connecting part in the vertical direction, and the axis of the second rotating shaft is located on the side of the center of gravity of the connecting part closer to the variable diameter rod.

[0012] Specifically, a power distribution box is installed on the cabinet.

[0013] Specifically, the cabinet is also equipped with a positioning mechanism for positioning the charging dock.

[0014] Specifically, the cooling box is placed on the bottom plate of the cabinet, and an insulating heat-insulating pad is provided between the cooling box and the bottom plate of the cabinet.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. The cabinet physically isolates the burning battery and charging dock. A drive mechanism rotates the flipping mechanism, causing the charging dock and battery to fall into the cooling box, which can actively extinguish the fire and effectively block the fire spread path caused by thermal runaway of the charging dock, thus improving safety from the source.

[0017] 2. A cooling box is used to suppress the chain reaction of thermal runaway, and a dual-sensor system of smoke and heat sensors is provided to realize real-time monitoring and early warning of fire risks.

[0018] 3. The tilting mechanism is driven by a combination of a drive mechanism and an emergency mechanism, providing double protection.

[0019] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of the flame-retardant cabinet (with the cabinet door closed) of the battery charging station in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the flame-retardant cabinet (cabinet door open) of the battery charging station in an embodiment of the present invention;

[0023] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the flipping mechanism and the driving mechanism (excluding the protective cover) installed in the cabinet in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the flipping mechanism and the driving mechanism (including the protective cover) installed in the cabinet in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram showing the connection between the flipping mechanism and the driving mechanism in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the pusher block in an embodiment of the present invention;

[0028] Figure 8This is a schematic diagram of the emergency mechanism when activated in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the emergency mechanism when it is closed in an embodiment of the present invention.

[0030] The reference numerals in the above figures are as follows: 1. Cabinet body; 11. Front door; 111. Observation window; 12. Top door; 2. Flipping mechanism; 21. First fixed seat; 22. First rotating shaft; 231. Support block; 232. Support plate; 3. Drive mechanism; 31. Second fixed seat; 311. Connecting part; 32. Second rotating shaft; 33. Connecting seat; 34. Electric push rod; 35. Push block; 351. First groove; 352. Second groove; 36. Connecting part 37. Shaft; 4. Protective cover; 5. Emergency mechanism; 6. Third fixed seat; 7. Handle; 8. Variable diameter rod; 9. Small diameter section; 10. Large diameter section; 11. Third rotating shaft; 2. Elastic element; 32. Cooling box; 33. Insulating heat insulation pad; 44. Charging seat; 55. Sensor; 6. Caster wheel; 7. Pull ring; 86. Bracket; 87. Positioning part; 88. Adjusting part; 9. Distribution box; 98. Audible and visual alarm; 10. Battery. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "fixing," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being 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 includes the first feature being below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 limiting the scope of protection of this application.

[0035] Furthermore, the terms "first" and "second" are used only to distinguish between different terms in description and do not have any special meaning.

[0036] Combination Figures 1 to 3 As shown, the flame-retardant cabinet of the battery charging stand of the present invention mainly includes: cabinet 1 and a flipping mechanism 2, a drive mechanism 3, a cooling box 5 and a sensor 7 installed in the cabinet 1. The flame-retardant cabinet also includes a control system connected to the drive mechanism 3 and the sensor 7. The control system can be a common relay or PLC system, etc. Specifically, the flipping mechanism 2 is located inside the cabinet 1 at the top, supporting the charging base 6; the drive mechanism 3 is connected to the flipping mechanism 2, which drives the flipping mechanism 2 to rotate, so that the flipping mechanism 2 loses its ability to support the charging base 6, causing the charging base 6 to fall downwards; the cooling box 5 is located below the flipping mechanism 2, and contains coolant, which can be water or other liquids that can quickly extinguish and cool the high-temperature and / or ignited battery 10; the sensor 7 is used to monitor the temperature and / or smoke volume inside the cabinet 1. When the sensor 7 detects that the temperature and / or smoke volume inside the cabinet 1 reaches a preset value, it transmits the signal to the control system. Subsequently, the control system controls the drive mechanism 3 to flip the flipping mechanism 2, so that the charging base 6 and the battery 10 fall into the cooling box 5 together. The amount of coolant is preferably enough to completely submerge the charging base 6 and the battery 10 to achieve rapid fire extinguishing and cooling.

[0037] Preferably, the cabinet 1 is provided with a front door 11 and a top door 12. The cooling box 5 can enter and exit the cabinet 1 through the front door 11, which may also be provided with an observation window 111. The battery 10 can enter and exit the cabinet 1 through the top door 12, and the sensor 7 can be installed on the side of the top door 12 facing the inside of the cabinet 1. The sensor 7 may be an integrated smoke and temperature sensor.

[0038] The flame-retardant cabinet in this embodiment includes two flipping mechanisms 2 and two driving mechanisms 3. The two flipping mechanisms 2 are symmetrically arranged on both sides of the cabinet body 1, and the two driving mechanisms 3 drive the two flipping mechanisms 2 respectively.

[0039] Combination Figures 4 to 6 As shown, the flipping mechanism 2 includes a first fixed base 21, a first rotating shaft 22, and a support member. The first fixed base 21 is fixedly connected to the cabinet 1, the first rotating shaft 22 is connected to the first fixed base 21 and can rotate relative to the first fixed base 21, and the support member is fixedly connected to the first rotating shaft 22. When the support member rotates to a horizontal position with the rotating shaft, it can support the charging base 6. When the support member rotates to a vertical position with the rotating shaft, it loses its ability to support the charging base 6, and the charging base 6 falls down.

[0040] More specifically, the support components include a support block 231 and a support plate 232. The support block 231 is fixedly connected to the first rotating shaft 22, and the bottom of the support block 231 is a flat surface, with the support plate 232 connected below this surface. The distance between the support plates 232 of the two flipping mechanisms 2 is less than the length of the charging base 6. When the charging base 6 is placed, its two ends contact the support plates 232 of the two flipping mechanisms 2 respectively. The two ends of the support plate 232 are bent to limit its movement along the width direction of the charging base 6, and the support block 231 can limit its movement along the length direction of the charging base 6, preventing the charging base 6 from falling during normal charging.

[0041] Reference Figures 4 to 6As shown, the drive mechanism 3 mainly includes a second fixed base 31, a second rotating shaft 32, a connecting base 33, an electric push rod 34, and a push block 35. The second fixed base is fixedly connected to the cabinet 1. The connecting base 33 is connected to the second fixed base 31 via the second rotating shaft 32. Preferably, the second rotating shaft 32 allows the connecting base 33 to rotate relative to the second fixed base 31. One end of the push block 35 is fixedly connected to the first rotating shaft 22, and the other end is movably connected to the bottom end of the electric push rod 34. The position of the push block 35 can change with the extension and retraction of the electric push rod 34, thereby driving the first rotating shaft 22 to rotate, and thus allowing the support plate 232 to switch between horizontal and vertical positions. Under normal operating conditions, the electric push rod 34 extends downwards, and the push block 35 drives the support plate 232 to rotate to a horizontal position, maintaining support for the charging base 6. When an accident occurs, the electric push rod 34 retracts upwards, triggering the push block 35 to move, which in turn drives the support plate 232 supporting the charging base 6 to flip downwards to a vertical position, causing the entire charging base 6 to be submerged in the cooling box 5.

[0042] Preferably, the motor of the electric actuator 34 may be provided with a protective cover 37 to prevent external moisture from corroding the motor.

[0043] Continue to refer to Figures 4 to 6 As shown, one end of the electric actuator 34 connected to the push block 35 (i.e. Figure 6 A connecting shaft 36 is threaded through the bottom end of the electric actuator 34 shown in the diagram. The axis of the connecting shaft 36 is parallel to the axis of the first rotating shaft 22. Figure 6 and Figure 7 As shown, the end of the push block 35 connected to the electric push rod 34 is provided with a first groove 351, which is used to accommodate the bottom end of the electric push rod 34. In other words, the bottom end of the electric push rod 34 is located in the first groove 351. The two side walls of the first groove 351 are respectively provided with second grooves 352. When the bottom end of the electric push rod 34 is located in the first groove 351, the two ends of the connecting shaft 36 are respectively located in the two second grooves 352 and can move within the second grooves 352. When the electric push rod 34 extends or retracts, the connecting shaft 36 abuts against the side wall of the second groove 352 to cause the push block 35 to drive the first rotating shaft 22 to rotate. The depth of the second groove 352 should be set such that when the electric push rod 34 extends downward to the support plate 232 in a horizontal position, the connecting shaft 36 is still located in the second groove 352, and the second groove 352 is tilted downward at a certain angle so that its opening is below the horizontal line; when the electric push rod 34 retracts upward to about half of its stroke, the two ends of the connecting shaft 36 disengage from the two second grooves 352 of the push block 35 respectively, so that the flipping mechanism 2 loses its ability to support the charging base.

[0044] Combination Figure 1 , Figure 8 and Figure 9As shown, the flame-retardant cabinet in this embodiment also includes an emergency mechanism 4 disposed on the cabinet body 1. The emergency mechanism 4 mainly includes a third fixing seat 41, a handle 42, a variable diameter rod 43, a third rotating shaft 44, and an elastic element 45. The third fixing seat 41 is fixedly connected to the cabinet body 1, and at least a part of the third fixing seat 41 is located outside the cabinet body 1. The third fixing seat 41 has an inner cavity through both ends, and the variable diameter rod 43 passes through the inner cavity. The variable diameter rod 43 includes a small diameter section 431 and a large diameter section 432 connected to each other. The diameter of the small diameter section 431 is smaller than the diameter of the large diameter section 432. The small diameter section 431 extends out of the inner cavity of the third fixing seat 41 and is connected to the handle 42 disposed outside the cabinet body 1 through the third rotating shaft 44. The large diameter section 432 extends into the inner cavity towards the inside of the cabinet body 1 to press against the connecting seat 33. The elastic element 45 can be a compression spring, which is sleeved on the outer wall of the small diameter section 431 of the variable diameter rod 43. The two ends of the elastic element 45 abut against the wall of the inner cavity and the end of the large diameter section 432, respectively. The handle 42 can rotate around the third pivot 44. When the handle 42 is rotated to the vertical position, it is in the closed state. At this time, the large diameter section 432 of the variable diameter rod 43 extends into the interior of the cabinet 1 to press on the top of the connecting seat 33, preventing the connecting seat 33 and the electric push rod 34 on it from rotating relative to the second fixed seat 31. When the handle 42 is rotated to the horizontal position, the large diameter section 432 of the variable diameter rod 43 compresses the elastic element 45 to move towards the outside of the cabinet 1, so that the emergency mechanism 4 is in the open state. The large diameter section 432 releases the connecting seat 33, or in other words, the large diameter section 432 leaves the surface of the connecting seat 33 and the two do not contact each other. At this time, the whole formed by the connecting seat 33 and the electric push rod 34 can rotate clockwise under the action of gravity until the connecting shaft 36 disengages from the second groove 352 of the push block 35, causing the flipping mechanism 2 to lose its support and flip, ultimately causing the charging seat 6 to passively fall into the cooling box 5.

[0045] Using the above solution, when the electric push rod 34 fails to operate normally due to power failure or other reasons, personnel can manually intervene through the emergency mechanism 4 to prevent accidents such as battery 10 catching fire.

[0046] Furthermore, combined Figure 8 and Figure 9As shown, the second fixed base 31 includes a connecting portion 311 for connecting with the connecting base 33. In other words, the portion of the second fixed base 31 used for connecting with the connecting base 33 is defined as the connecting portion 311. The connecting portion 311 has a rounded corner on the side facing the variable diameter rod 43 (the bottom end in contact with the connecting base 33) so that the connecting base 33 can rotate clockwise. A second rotating shaft 32 passes through the connecting portion 311. The axis of the second rotating shaft 32 is vertically offset from the center of gravity of the connecting portion 311 (or the integral structure of the connecting base 33 and the electric push rod 34), and the axis of the second rotating shaft 32 is located on the side of the connecting portion 311 closer to the variable diameter rod 43. Using this scheme, it can be ensured that when the variable diameter rod 43 is released from the connecting base 33, the integral structure of the connecting base 33 and the electric push rod 34 can rotate clockwise under gravity.

[0047] like Figure 4 As shown, a distribution box 9 can also be installed on the cabinet 1. The distribution box 9 is used to connect the charging base 6 and the power supply. The distribution box 9 is equipped with a power socket on its exterior, and an insulation column is installed on the distribution board inside the distribution box 9. This insulation column connects the distribution board and the cabinet 1, forming a thermal barrier between the distribution board and the cabinet 1 to prevent high temperatures from damaging the electrical control equipment in case of an accident. The distribution board and the charging base are directly connected by a flexible cable. Sufficient length slack is reserved during the wiring of the flexible cable, ensuring that the flexible cable does not rigidly constrain the vertical movement of the charging base and does not obstruct the charging base's free fall under its own weight. Preferably, a cooling fan is installed inside the distribution box 9.

[0048] Combination Figure 2 and Figure 3 As shown, the cabinet 1 also includes a positioning mechanism for positioning the charging base 6 from above. This positioning mechanism includes a bracket 83 connected to the cabinet 1 and a positioning element connected to the bracket 83. The positioning element includes a positioning part 841 and an adjusting part 842. The positioning part 841 can be an L-shaped steel piece, used to abut against the upper end and side wall of the charging base 6. The adjusting part 842 has a slotted hole through which the positioning element and the bracket 83 are connected by fasteners. The slotted hole allows the position of the positioning part 841 to be adjusted to accommodate charging bases 6 of different sizes.

[0049] Better, such as Figure 2 As shown, the cooling box 5 is mounted on the bottom plate of the cabinet 1 and located between the two flipping mechanisms 2, or in other words, the cooling box 5 is located below the charging base 6. An insulating heat-insulating pad 51 is also provided between the cooling box 5 and the bottom plate of the cabinet 1. The insulating heat-insulating pad 51 serves two purposes: firstly, it isolates the current that may leak from the battery 10; secondly, it prevents high temperatures from being conducted to the outside of the flame-retardant cabinet after an accident, thus preventing damage to equipment or personnel in the external environment. Furthermore, the distribution box 9 also integrates an audible and visual alarm 91 to ensure effective warning to on-site personnel in the early stages of an accident.

[0050] like Figure 1 As shown, the bottom of cabinet 1 is equipped with casters 81, and the side of cabinet 1 is equipped with a pull ring 82, which can be used to equip cabinet 1 with a pull rod with a hook covered with insulating rubber. In the event of an accident, personnel can use the hook of the pull rod to hook onto the pull ring 82 on the cabinet from a safe distance to quickly pull cabinet 1 away, thereby effectively isolating the danger. The insulating rubber covering the hook provides a key safety guarantee for this operation.

[0051] In summary, the main working principle of the flame-retardant cabinet for the battery charging dock in this embodiment is as follows: Under normal charging conditions, the support plate 232 of the flipping mechanism 2 is in a horizontal position to support the charging dock 6, and the sensor 7 monitors the temperature and / or smoke volume inside the cabinet 1; when the sensor 7 detects that the temperature and / or smoke volume inside the cabinet 1 reaches the predicted value, it feeds back to the control system, and the control system controls the electric push rod 34 of the drive mechanism 3 to retract so that the support plate 232 flips to a vertical position, and the charging dock 6 with the battery 10 falls into the cooling box 5; if personnel find from the observation window 111 that the electric push rod 34 cannot move normally to actively put the charging dock 6 into the cooling box 5, they can manually operate the emergency mechanism 4 to intervene.

[0052] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A flame-retardant cabinet for a battery charging dock, characterized in that, include: The cabinet includes a flipping mechanism, a drive mechanism, a cooling box, and a sensor. The flipping mechanism supports the charging base, and the drive mechanism drives the flipping mechanism to flip so that the charging base falls. The cooling box is located below the flipping mechanism and is used to hold coolant to cool the charging base. The sensor monitors the temperature and / or smoke level inside the cabinet.

2. The flame-retardant cabinet for the battery charging dock according to claim 1, characterized in that, The flipping mechanism includes a first fixed base, a first rotating shaft, and a support member. The first fixed base is fixedly connected to the cabinet body, the first rotating shaft is rotatably connected to the first fixed base, and the support member is fixedly connected to the first rotating shaft.

3. The flame-retardant cabinet for the battery charging dock according to claim 2, characterized in that, The support component includes a support block and a support plate. The support block is fixedly connected to the first rotating shaft, and the support plate is fixedly connected to the support block.

4. The flame-retardant cabinet for the battery charging dock according to claim 2, characterized in that, The drive mechanism includes a second fixed base, a second rotating shaft, a connecting base, an electric push rod, and a push block. The second fixed base is fixedly connected to the cabinet body. The connecting base is connected to the second fixed base through the second rotating shaft. One end of the push block is fixedly connected to the first rotating shaft, and the other end of the push block is movably connected to the electric push rod.

5. The flame-retardant cabinet for the battery charging dock according to claim 4, characterized in that, A connecting shaft is provided on one end of the electric push rod that is connected to the push block. The axis of the connecting shaft is parallel to the axis of the first rotating shaft. A first groove is provided on one end of the push block that is connected to the electric push rod. A second groove is provided on each of the two side walls of the first groove. The end of the electric push rod is located in the first groove. Both ends of the connecting shaft are located in the two second grooves and can move in the second grooves.

6. The flame-retardant cabinet for the battery charging dock according to claim 5, characterized in that, The flame-retardant cabinet also includes an emergency mechanism mounted on the cabinet body. The emergency mechanism includes a third fixed seat, a handle, a variable diameter rod, a third rotating shaft, and an elastic element. The third fixed seat is fixedly connected to the cabinet body, and at least a portion of the third fixed seat is located outside the cabinet body. The third fixed seat has an inner cavity, and the variable diameter rod passes through the inner cavity. The smaller diameter section of the variable diameter rod passes through the third fixed seat to connect with the handle located outside the cabinet body via the third rotating shaft. The larger diameter section of the variable diameter rod passes into the cabinet body. The elastic element is sleeved on the smaller diameter section and abuts against the inner cavity and the end of the larger diameter section. When the handle is rotated, it can drive the larger diameter section of the variable diameter rod to press against or release the connecting seat.

7. The flame-retardant cabinet for the battery charging dock according to claim 6, characterized in that, The second fixed seat includes a connecting part for connecting with the connecting seat. The connecting part has a rounded corner on the side facing the variable diameter rod. The second rotating shaft passes through the connecting part. The axis of the second rotating shaft is offset from the center of gravity of the connecting part in the vertical direction, and the axis of the second rotating shaft is located on the side of the center of gravity of the connecting part closer to the variable diameter rod.

8. The flame-retardant cabinet for the battery charging dock according to claim 1, characterized in that, A distribution box is installed on the cabinet.

9. The flame-retardant cabinet for the battery charging dock according to claim 1, characterized in that, The cabinet is also equipped with a positioning mechanism for positioning the charging dock.

10. The flame-retardant cabinet for the battery charging dock according to claim 1, characterized in that, The cooling box is placed on the bottom plate of the cabinet, and an insulating heat-insulating pad is provided between the cooling box and the bottom plate of the cabinet.

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