A lithium battery charging cabinet

Abstract

The utility model relates to a lithium battery charging cabinet including a lithium battery charging cabinet including cabinet, automatic fire extinguishing system, leakage reaction box and water shedding flow guide groove. Through setting the leakage reaction box filled with alkaline filler in the cabinet bottom, can neutralize the strong acid lithium battery electrolyte that leaks instantly, effectively eliminates its corrosive, has reduced the corrosion risk to the cabinet internal metal parts and electrical circuit, avoided the electrical short circuit safety hidden danger caused by residual strong acid electrolyte, simplified the subsequent waste liquid processing difficulty and lightened the environmental pollution, the water shedding flow guide groove and the waste liquid collecting jar connected at the end that are equipped with in the leakage reaction box bottom, constructed the waste liquid flow guide and centralized collection after neutralization, ensured the waste liquid discharge after being neutralized and handled in the cabinet, avoided the secondary pollution and equipment damage risk that liquid in the cabinet diffuse and spread caused, thereby improved the safety and environmental protection of lithium battery charging cabinet when dealing with electrolyte leakage and fire extinguishing post -treatment.

Description

Technical Field

[0001] This utility model relates to the field of safety protection equipment technology, and in particular to a lithium battery charging cabinet. Background Technology

[0002] Existing charging cabinets include a cabinet body, fire extinguishing devices, and waste liquid collection boxes for passively collecting leaked corrosive electrolyte. However, simply setting up waste liquid collection boxes cannot effectively neutralize leaked acidic electrolyte. The residual liquid is still corrosive, posing safety hazards and complicating subsequent treatment. This leads to increased risks of equipment corrosion, electrical short circuits, and even environmental pollution.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a lithium battery charging cabinet to solve the problem that simply setting up a waste liquid collection box cannot effectively neutralize leaked acidic electrolyte, leaving residual liquid that is still corrosive, posing safety hazards and requiring complex subsequent treatment, leading to increased risks of equipment corrosion, electrical short circuits, and even environmental pollution.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A lithium battery charging cabinet, characterized in that it comprises:

[0007] The cabinet has two doors rotatably connected to the front two sides of the cabinet. The two doors are equipped with locks at the ends that are close to each other. The cabinet has several shelves inside, which divide the cabinet into several charging areas. The rear inner wall of each charging area has several charging ports for charging the battery.

[0008] An automatic fire suppression system is installed at the top of each of the shelves. The automatic fire suppression system is configured to alarm and extinguish the fire on the batteries on the shelf after a fire is triggered.

[0009] A leakage reaction box is located at the bottom of the cabinet, and the leakage reaction box is filled with alkaline filler.

[0010] A hydrophobic drainage channel is located at the bottom of the leakage reaction box, and its end is connected to a waste liquid collection tank.

[0011] A further technical solution is that the alkaline filler inside the leakage reaction box is wrapped with an outer membrane. The outer membrane dissolves after contacting the lithium battery electrolyte, and the lithium battery electrolyte contacts the alkaline filler and neutralizes it.

[0012] A further technical solution is that the alkaline filler is sodium bicarbonate powder.

[0013] A further technical solution is that the hydrophobic guide channel has two symmetrically arranged inclined plates, and the end where the two inclined plates are connected is lower than the opposite end of the two inclined plates.

[0014] A further technical solution is that the waste liquid collection tank is detachably located at the rear end of the cabinet, and the end of the hydrophobic guide channel is lower than the beginning of the hydrophobic guide channel.

[0015] A further technical solution is that the leakage reaction box is equipped with a visual glass window.

[0016] A further technical solution is that the side of the cabinet is provided with several axial flow fans, and the positions of the axial flow fans correspond one-to-one with the charging area.

[0017] A further technical solution is that an exhaust vent is provided on the side of the cabinet, the exhaust vent is located on one side of the charging area, and the axial flow fan is installed on the outside of the exhaust vent.

[0018] The beneficial effects of this utility model embodiment are as follows:

[0019] (I) A lithium battery charging cabinet includes a cabinet body, an automatic fire extinguishing system, a leakage reaction box, and a hydrophobic drainage channel. By setting a leakage reaction box filled with alkaline filler at the bottom of the cabinet body, the leaked strong acidic lithium battery electrolyte can be neutralized immediately, effectively eliminating its corrosiveness, reducing the risk of corrosion to the internal metal parts and electrical circuits of the cabinet, avoiding the safety hazard of electrical short circuit caused by residual strong acid electrolyte, simplifying the subsequent waste liquid treatment difficulty and reducing environmental pollution. At the same time, the hydrophobic drainage channel at the bottom of the leakage reaction box and the waste liquid collection tank connected to the end allow the neutralized waste liquid to be guided by the hydrophobic drainage channel and collected in the waste liquid collection tank, ensuring that the neutralized waste liquid is discharged from the cabinet body, avoiding secondary pollution and equipment damage risks caused by the liquid spreading inside the cabinet, thereby improving the safety and environmental protection of the lithium battery charging cabinet in dealing with electrolyte leakage and post-fire extinguishing treatment.

[0020] (ii) Furthermore, the alkaline filler inside the leakage reaction box is wrapped with an outer membrane, such as a PVA water-soluble membrane. The outer membrane dissolves upon contact with the lithium battery electrolyte, allowing the lithium battery electrolyte to contact and neutralize the alkaline filler. Under normal conditions, the membrane isolates the alkaline filler from air moisture, preventing the sodium bicarbonate powder from becoming damp and clumping and failing. When the battery leaks, the acidic lithium battery electrolyte dissolves the outer membrane, instantly exposing the alkaline powder and allowing it to fully contact the electrolyte. This ensures a rapid and thorough acid-base neutralization reaction, preventing a decrease in reaction efficiency due to premature moisture absorption and clumping of the dry powder, and preventing the accumulation of incompletely neutralized acidic residue in the leaking area. This minimizes the risk of electrolyte corrosion and ensures equipment and environmental safety.

[0021] (III) Furthermore, the drainage channel consists of two symmetrically arranged inclined plates, with the end where the two inclined plates are connected being lower than the opposite end of the two inclined plates. The surface of the inclined plates is coated with polytetrafluoroethylene (PTFE). The symmetrical inclined plates form a central V-shaped channel, which naturally guides the waste liquid to converge at a lower position by utilizing the difference in inclination angle between the connected end and the opposite end; while the PTFE coating makes it extremely difficult for the waste liquid to adhere to the plate surface, forming a near-zero resistance flow, greatly reducing droplet residue, preventing the accumulation of corrosive substances due to liquid retention, and ensuring that the neutralized waste liquid flows into the waste liquid collection tank with minimal resistance, thereby improving the efficiency of waste liquid collection. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of a lithium battery charging cabinet according to the present invention.

[0023] Figure 2 This is a vertical cross-sectional view of a lithium battery charging cabinet according to the present invention.

[0024] Figure 3 This is a front view structural diagram of a leakage reaction box in a lithium battery charging cabinet according to the present invention.

[0025] Figure 4 This is a side view of a lithium battery charging cabinet according to the present invention.

[0026] In the picture:

[0027] 100. Cabinet body; 101. Cabinet door; 102. Shelf; 103. Charging area; 104. Charging port; 105. Vent; 200. Leakage reaction box; 201. Alkaline packing; 202. Outer membrane; 210. Hydrophobic drainage channel; 211. Inclined plate; 220. Visual glass window; 300. Waste liquid collection tank; 400. Axial flow fan. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0029] First embodiment:

[0030] like Figures 1-2 As shown, a lithium battery charging cabinet includes a cabinet body 100, an automatic fire extinguishing system, a leakage reaction box 200, and a drainage channel 210. Two cabinet doors 101 are rotatably connected to the front two sides of the cabinet body 100, and a door lock is provided at the end of the two cabinet doors 101 that are close to each other. The cabinet body 100 has several shelves 102 inside, which divide the interior of the cabinet body 100 into several charging areas 103. Several charging ports 104 for battery charging are provided on the rear inner wall of each charging area 103.

[0031] An automatic fire suppression system is installed at the top of each shelf 102. This system is configured to trigger an alarm and extinguish the fire on the batteries on the shelf 102 upon fire detection. Specifically, the automatic fire suppression system includes smoke sensors, temperature sensors, an intelligent alarm, and a thermal aerosol fire suppression device. The system operates in conjunction with an intelligent controller. When the smoke sensor detects a specific concentration of smoke or the temperature sensor senses a rapid rise in ambient temperature exceeding a preset safety threshold, the intelligent controller instantly determines the fire situation, simultaneously triggers the alarm to issue an alarm signal, and activates the thermal aerosol fire suppression device to extinguish the fire.

[0032] like Figure 2 As shown, a leakage reaction box 200 is located at the bottom of the cabinet 100, and the leakage reaction box 200 is filled with alkaline filler 201. For example, the alkaline filler 201 is sodium bicarbonate powder. A hydrophobic drainage channel 210 is located at the bottom of the leakage reaction box 200, and its end is connected to a waste liquid collection tank 300. For example, the waste liquid collection tank 300 is detachably located at the rear end of the cabinet 100, and the end of the hydrophobic drainage channel 210 is lower than its beginning.

[0033] like Figures 2-3As shown, furthermore, the alkaline filler 201 inside the leakage reaction box 200 is wrapped with an outer membrane 202, such as a PVA water-soluble membrane. The outer membrane 202 dissolves upon contact with the lithium battery electrolyte, allowing the lithium battery electrolyte to contact and neutralize the alkaline filler 201. Under normal conditions, the membrane isolates the alkaline filler 201 from air moisture, preventing the sodium bicarbonate powder from becoming damp and clumping and failing. When the battery leaks, the acidic lithium battery electrolyte dissolves the outer membrane 202, instantly exposing the alkaline powder and allowing it to fully contact the electrolyte. This ensures a rapid and thorough acid-base neutralization reaction, preventing a decrease in reaction efficiency due to premature moisture absorption and clumping of the dry powder, and preventing the accumulation of incompletely neutralized acidic residue in the leaking area. This minimizes the risk of electrolyte corrosion and ensures equipment and environmental safety.

[0034] like Figures 2-3 As shown, the hydrophobic guide channel 210 further comprises two symmetrically arranged inclined plates 211, with the end where the two inclined plates 211 are connected being lower than the opposite end of the two inclined plates 211. The surface of the inclined plates 211 is coated with polytetrafluoroethylene (PTFE). The symmetrical inclined plates 211 form a central V-shaped channel, which naturally guides the waste liquid to converge at a lower position by utilizing the difference in inclination angle between the connected end and the opposite end; while the PTFE coating makes it extremely difficult for the waste liquid to adhere to the plate surface, forming a near-zero resistance flow, greatly reducing droplet residue, preventing the accumulation of corrosive substances due to liquid stagnation, and ensuring that the neutralized waste liquid flows into the waste liquid collection tank 300 with minimal resistance, thereby improving the efficiency of waste liquid collection.

[0035] like Figure 3 As shown, the leakage reaction box 200 is further equipped with a visualization glass window 220. Maintenance personnel can visually inspect whether the outer membrane 202 of the alkaline filler 201 is ruptured through the visualization glass window 220 without opening the leakage reaction box 200, thus improving the efficiency of proactive equipment maintenance.

[0036] like Figure 2 and Figure 4 As shown, furthermore, the side of the cabinet 100 is also equipped with several axial flow fans 400, the positions of which correspond one-to-one with the charging areas 103. For example, the side of the cabinet 100 is provided with an exhaust vent 105, which is located on one side of the charging area 103, and the axial flow fans 400 are installed on the outside of the exhaust vent 105. Each charging area 103 corresponds to an independent exhaust vent 105. The axial flow fans 400 embedded in the side wall start positive pressure air supply cooling in the normal charging mode, and the airflow forms forced convection along the battery gaps to reduce the temperature of the charging area 103 when the lithium battery is charging. When the automatic fire extinguishing system is triggered, the fan immediately switches to reverse high-speed smoke exhaust mode to extract pyrolysis gases and effectively prevent external oxygen from flowing in and causing reignition.

[0037] In operation, this embodiment is as follows:

[0038] After the lithium battery is placed in the charging area 103 and connected to the charging port 104, the cabinet 100 enters the charging monitoring state. At this time, the smoke sensor and temperature sensor of the automatic fire extinguishing system perform real-time environmental monitoring of the charging area 103. If a lithium battery on a certain shelf 102 suddenly experiences thermal runaway, causing the smoke concentration to exceed the standard or the temperature to rapidly exceed the threshold, the intelligent controller will simultaneously activate the audible and visual alarm to issue a warning, and trigger the thermal aerosol fire extinguishing device to release fire extinguishing aerosol to extinguish the open flame. At the same time, the acidic electrolyte leaked from the damaged battery will fall into the bottom leakage reaction box. 200, after contacting the alkaline filler 201 and outer membrane 202, dissolves, allowing the sodium bicarbonate powder to fully mix with the electrolyte for acid-base neutralization reaction, generating low-corrosion waste liquid; after neutralization, the waste liquid passes through the PTFE-coated inclined plate 211 type hydrophobic guide channel 210, and utilizes the gravity flow slope formed by the height difference of the inclined plate 211, the waste liquid finally flows into the detachable waste liquid collection tank 300; during normal operation, the axial flow fan 400 continuously achieves active heat dissipation of the charging area 103 through the exhaust port 105, and after the fire is extinguished, it switches to the emergency smoke exhaust mode to remove smoke.

[0039] In this embodiment, by setting a leakage reaction box 200 filled with alkaline filler 201 at the bottom of the cabinet 100, the leaked strong acid lithium battery electrolyte can be neutralized immediately, effectively eliminating its corrosiveness, reducing the risk of corrosion to the metal parts and electrical circuits inside the cabinet 100, avoiding the safety hazard of electrical short circuit caused by residual strong acid electrolyte, simplifying the subsequent waste liquid treatment difficulty and reducing environmental pollution. At the same time, the hydrophobic drainage channel 210 at the bottom of the leakage reaction box 200 and the waste liquid collection tank 300 connected at the end guide the neutralized waste liquid through the hydrophobic drainage channel 210 and collect it in the waste liquid collection tank 300, ensuring that the neutralized waste liquid is discharged from the inside of the cabinet 100, avoiding the risk of secondary pollution and equipment damage caused by the liquid spreading inside the cabinet, thereby improving the safety and environmental protection of the lithium battery charging cabinet in dealing with electrolyte leakage and fire extinguishing.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A lithium battery charging cabinet, characterized in that, include: The cabinet has two doors rotatably connected to the front two sides of the cabinet. The two doors are equipped with locks at the ends that are close to each other. The cabinet has several shelves inside, which divide the cabinet into several charging areas. The rear inner wall of each charging area has several charging ports for charging the battery. An automatic fire suppression system is installed at the top of each of the shelves. The automatic fire suppression system is configured to alarm and extinguish the fire on the batteries on the shelf after a fire is triggered. A leakage reaction box is located at the bottom of the cabinet, and the leakage reaction box is filled with alkaline filler. A hydrophobic drainage channel is located at the bottom of the leakage reaction box, and its end is connected to a waste liquid collection tank.

2. The lithium battery charging cabinet according to claim 1, characterized in that: The alkaline filler inside the leakage reaction box is wrapped with an outer membrane. The outer membrane dissolves after contacting the lithium battery electrolyte, and the lithium battery electrolyte comes into contact with the alkaline filler and neutralizes it.

3. The lithium battery charging cabinet according to claim 1, characterized in that: The alkaline filler is sodium bicarbonate powder.

4. The lithium battery charging cabinet according to claim 1, characterized in that: The hydrophobic channel has two symmetrically arranged inclined plates, with one end of the two inclined plates connected to the other end of the two inclined plates being lower than the opposite end of the two inclined plates.

5. The lithium battery charging cabinet according to claim 1, characterized in that: The waste liquid collection tank is detachably located at the rear end of the cabinet, and the end of the hydrophobic guide channel is lower than the beginning of the hydrophobic guide channel.

6. The lithium battery charging cabinet according to claim 1, characterized in that: The leakage reaction box is equipped with a viewing glass window.

7. The lithium battery charging cabinet according to claim 1, characterized in that: The side of the cabinet is also equipped with several axial flow fans, and the positions of the axial flow fans correspond one-to-one with the charging areas.

8. The lithium battery charging cabinet according to claim 7, characterized in that: The cabinet has an exhaust vent on its side, which is located on one side of the charging area, and the axial fan is installed on the outside of the exhaust vent.

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