A lithium battery replacement cabinet

Abstract

The utility model relates to a lithium cell battery replacement cabinet including electric cabinet main part and automatic fire extinguishing system, automatic fire extinguishing system is located at the top inside every battery compartment, automatic fire extinguishing system is configured after the alarm and carries out fire extinguishing to the inside of battery compartment to the fire situation trigger, the bottom of battery compartment is equipped with the cooling plate, and the cooling plate is filled with solid -liquid phase change material, through the cooling plate of solid -liquid phase change material built -in battery compartment bottom, utilize solid -liquid variable phase material's phase change point melting heat absorption physical characteristic, when the residual temperature of battery after fire extinguishing is higher than the phase change melting point, and the phase change material turns from solid to liquid, through the heat absorption heat of battery is quickly removed, makes battery temperature to fall below the safety threshold, completely blocks the battery combustion, eliminates the equipment linked chain damage risk from the root cause of secondary combustion, simultaneously passive temperature control mechanism of solid -liquid phase change material does not need external energy, reduces the operation and maintenance cost.

Description

Technical Field

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

[0002] Existing lithium battery swapping cabinet technologies generally adopt smoke detection linked to aerosol or dry powder fire extinguishing schemes. Although these can quickly extinguish open flames, they lack a continuous temperature control mechanism and cannot solve the problem of residual high temperature after lithium battery thermal runaway. The battery cells inside the battery remain at high temperature after the fire is extinguished, and their residual chemical energy can cause reignition, leading to secondary damage to the equipment.

[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 swapping cabinet to solve the problem that the battery cells inside the battery remain at high temperatures after a fire is extinguished, and their residual chemical energy can cause reignition, leading to secondary damage to the equipment.

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

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

[0007] The main body of the electrical cabinet has a battery compartment inside. The battery compartment has multiple sets, each of which is a separate charging space and has a corresponding charging interface. The internal space of the battery compartment holds a rechargeable battery, which is charged through the charging interface. The bottom of the battery compartment is equipped with a cooling plate, which is filled with a solid-liquid phase change material.

[0008] An automatic fire suppression system is installed at the top of each of the battery compartments. The automatic fire suppression system is configured to alarm and extinguish the fire inside the battery compartment after a fire is triggered.

[0009] A further technical solution is that the top surface of the cooling plate has several holes.

[0010] A further technical solution is that the cooling plate is slidably disposed at the bottom of the battery compartment, sliders are provided on both sides of the cooling plate, and slide rails are provided on both sides of the bottom of the battery compartment, with the sliders being inserted into and slidably disposed in the slide rails.

[0011] A further technical solution is that the solid-liquid phase change material is octadecane.

[0012] A further technical solution is that the automatic fire extinguishing system includes an automatic alarm, a smoke and gas sensor, a temperature detector, and a fire extinguishing device. The smoke and gas sensor is configured to detect smoke data inside the battery compartment and activate the automatic alarm and the fire extinguishing device when the smoke data exceeds a preset smoke threshold. The temperature detector is configured to detect temperature data inside the battery compartment and activate the automatic alarm and the fire extinguishing device when the temperature data exceeds a temperature threshold.

[0013] A further technical solution is that the battery compartment has sixteen groups, four groups of battery compartments are arranged in the same row in one layer, and the four layers of battery compartments are arranged vertically at the front end of the main body of the cabinet.

[0014] A further technical solution is that the bottom four corners of the main body of the electrical cabinet are equipped with casters.

[0015] A further technical solution is that a canopy is provided at the top of the main body of the electrical cabinet, and the canopy covers the top of the main body of the electrical cabinet.

[0016] The beneficial effects of this utility model embodiment are as follows:

[0017] (i) A lithium battery swapping cabinet includes a cabinet body and an automatic fire extinguishing system. The automatic fire extinguishing system is located at the top of each battery compartment. The automatic fire extinguishing system is configured to alarm and extinguish the fire inside the battery compartment after a fire is triggered. A cooling plate is provided at the bottom of the battery compartment. The cooling plate is filled with a solid-liquid phase change material. By using the physical property of the phase change point melting and heat absorption of the solid-liquid phase change material through the cooling plate at the bottom of the battery compartment, when the residual temperature of the battery is higher than the phase change melting point after the fire is extinguished, the phase change material changes from solid to liquid. By absorbing heat, it quickly transfers the heat of the battery, so that the battery temperature drops below the safety threshold, completely preventing the battery from reigniting and eliminating the risk of chain damage to the equipment caused by secondary reignition from the root. At the same time, the passive temperature control mechanism of the solid-liquid phase change material does not require external energy, reducing operating and maintenance costs.

[0018] (ii) Furthermore, the cooling plate is slidably mounted at the bottom of the battery compartment. The cooling plate is connected to the slide rails on the inner wall of the battery compartment on both sides of the bottom of the battery compartment via sliders on both sides. The slide rails have built-in ball bearings to enable pulling. During maintenance, the cooling plate can be pulled outward, which realizes the replaceability of the cooling plate. Moreover, the sliding connection of the cooling plate improves the maintenance efficiency of the cooling plate. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of a lithium battery swapping cabinet according to the present invention.

[0020] Figure 2 This is a side view of a lithium battery swapping cabinet according to the present invention.

[0021] Figure 3 This is a frontal cross-sectional view of a lithium battery swapping cabinet according to the present invention.

[0022] Figure 4 This is a top view of the cooling plate in a lithium battery swapping cabinet according to the present invention.

[0023] Figure 5 for Figure 3 Enlarged view at point A.

[0024] In the picture:

[0025] 1. Main body of the electrical cabinet; 2. Battery compartment; 3. Cabinet door; 4. Heat dissipation vent; 5. Cooling plate; 6. Solid-liquid phase change material; 7. Holes; 8. Slide rail; 9. Slider; 10. Casters; 11. Canopy. Detailed Implementation

[0026] 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.

[0027] First embodiment:

[0028] A lithium battery swapping cabinet includes a cabinet body 1 and an automatic fire extinguishing system.

[0029] like Figure 1 and Figure 3 As shown, the main body 1 of the electrical cabinet has a battery compartment 2 inside. The battery compartment 2 has multiple sets. Specifically, the front end of the main body 1 is rotatably connected to several cabinet doors 3. The positions of the cabinet doors 3 correspond to the front end of the battery compartment 2. Rotating the cabinet doors 3 can open or close the battery compartment 2. For example, there are sixteen sets of battery compartments 2. Four sets of battery compartments 2 are arranged in a row in a single layer. The four layers of battery compartments 2 are arranged vertically at the front end of the main body 1 of the electrical cabinet.

[0030] like Figure 2 and Figure 3 As shown, each battery compartment 2 is a separate charging space with a corresponding charging interface. The internal space of the battery compartment 2 houses rechargeable batteries, which are charged via the charging interface. Specifically, the main body 1 of the cabinet also has heat dissipation vents 4 on both sides, and a cooling plate 5 is located at the bottom of the battery compartment 2. The cooling plate 5 is filled with a solid-liquid phase change material 6. For example, the solid-liquid phase change material 6 is octadecane.

[0031] An automatic fire suppression system is installed at the top inside each battery compartment 2. The system is configured to trigger an alarm and extinguish the fire inside the battery compartment 2 upon fire detection. For example, the automatic fire suppression system includes an automatic alarm, a smoke sensor, a temperature detector, and a fire extinguishing device. The smoke sensor is configured to detect smoke data inside the battery compartment 2 and activate the automatic alarm and fire extinguishing device when the smoke data exceeds a preset smoke threshold. The temperature detector is configured to detect temperature data inside the battery compartment 2 and activate the automatic alarm and fire extinguishing device when the temperature data exceeds a temperature threshold. Specifically, the system activates within 3 seconds of fire detection. When the fire extinguishing device is activated, dry powder or aerosol is sprayed from the nozzle, and the fire is extinguished within 18 seconds.

[0032] like Figure 4 As shown, furthermore, the top surface of the cooling plate 5 has several holes 7. The hole 7 structure increases the heat dissipation area of ​​the cooling plate 5 and accelerates heat conduction.

[0033] like Figure 5 As shown, the cooling plate 5 is further slidably disposed at the bottom of the battery compartment 2. Slider 9 is provided on both sides of the cooling plate 5, and slide rails 8 are provided on both sides of the bottom of the battery compartment 2. The slider 9 is engaged and slidably disposed within the slide rails 8. The cooling plate 5 is connected to the slide rails 8 on the inner wall of the battery compartment 2 at both sides of the bottom via the slider 9 on both sides. The slide rails 8 have built-in ball bearings for pull-out operation. During maintenance, the cooling plate 5 can be pulled outwards, achieving the replaceability of the cooling plate 5. Furthermore, the sliding connection of the cooling plate 5 improves the maintenance efficiency of the cooling plate 5.

[0034] like Figure 1 As shown, furthermore, the four corners of the bottom of the main body 1 of the electrical cabinet are equipped with casters 10. The casters 10 improve the flexibility of equipment deployment and the convenience of operation and maintenance, support the free movement of the electrical cabinet body, and facilitate quick layout adjustments in scenarios such as battery swapping stations and parking lots; in case of emergencies, they can be moved in an emergency to reduce collateral losses. At the same time, the casters 10 integrate a locking brake structure to ensure the stability of the equipment during charging operations.

[0035] like Figure 1 As shown, the top of the main body 1 of the electrical cabinet is further provided with a canopy 11, which covers the top of the main body 1 of the electrical cabinet. The canopy 11 provides all-weather protection, completely covering the top of the cabinet, effectively preventing rainwater penetration, meeting the IP54 protection level, preventing short circuits in the charging interface, moisture damage to the circuit board and corrosion of metal parts, and significantly improving the safety and durability of the battery swapping cabinet in complex outdoor environments.

[0036] In operation, this embodiment is as follows:

[0037] When a fire occurs in the battery compartment 2, the smoke sensor detects that the smoke data exceeds the preset threshold, or the temperature sensor detects that the temperature exceeds the set threshold (exemplarily set at 80°C). The automatic alarm immediately triggers an audible and visual alarm and simultaneously activates the fire extinguishing device to spray extinguishing agent. After the fire is extinguished, the residual high temperature of the battery (>80°C) triggers the octadecane phase change material in the cooling plate 5 to undergo phase change melting and absorb heat. The liquid octadecane flows in the cooling plate 5 and covers the bottom of the battery. The residual heat reduces the cell temperature to a safe threshold, below 80°C, completely preventing reignition. Throughout the process, the cooling plate 5 maintains a larger heat dissipation area through the perforated structure 7, ensuring uniform heat diffusion. The sliding design facilitates the replacement of the cooling plate 5 during maintenance, while the casters 10 and the canopy 11 ensure the mobility and protection of the equipment during outdoor operation.

[0038] In this embodiment, by using the cooling plate 5 of solid-liquid phase change material 6 built into the bottom of the battery compartment 2, the physical property of the phase change point melting and heat absorption of the solid-liquid phase change material is utilized. When the residual temperature of the battery after fire extinguishing is higher than the phase change melting point, the phase change material changes from solid to liquid. By absorbing heat, the heat of the battery is quickly transferred, and the battery temperature is reduced to below the safety threshold, completely preventing the battery from reigniting and eliminating the risk of chain damage to equipment caused by secondary reignition from the root. At the same time, the passive temperature control mechanism of the solid-liquid phase change material 6 does not require external energy, reducing operating and maintenance costs.

[0039] 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 swapping cabinet, characterized in that, include: The main body of the electrical cabinet has a battery compartment inside. The battery compartment has multiple sets, each of which is a separate charging space and has a corresponding charging interface. The internal space of the battery compartment holds a rechargeable battery, which is charged through the charging interface. The bottom of the battery compartment is equipped with a cooling plate, which is filled with a solid-liquid phase change material. An automatic fire suppression system is installed at the top of each of the battery compartments. The automatic fire suppression system is configured to alarm and extinguish the fire inside the battery compartment after a fire is triggered.

2. The lithium battery swapping cabinet according to claim 1, characterized in that: The top surface of the cooling plate has several holes.

3. The lithium battery swapping cabinet according to claim 1, characterized in that: The cooling plate is slidably disposed at the bottom of the battery compartment. Sliders are provided on both sides of the cooling plate, and slide rails are provided on both sides of the bottom of the battery compartment. The sliders are engaged and slidably disposed in the slide rails.

4. The lithium battery swapping cabinet according to claim 1, characterized in that: The solid-liquid phase change material is octadecane.

5. The lithium battery swapping cabinet according to claim 1, characterized in that: The automatic fire suppression system includes an automatic alarm, a smoke and gas sensor, a temperature detector, and a fire suppression device. The smoke and gas sensor is configured to detect smoke data inside the battery compartment and activate the automatic alarm and the fire suppression device when the smoke data exceeds a preset smoke threshold. The temperature detector is configured to detect temperature data inside the battery compartment and activate the automatic alarm and the fire suppression device when the temperature data exceeds a temperature threshold.

6. The lithium battery swapping cabinet according to claim 1, characterized in that: The battery compartment has sixteen groups, with four groups of battery compartments arranged in a row in a single layer, and the four layers of battery compartments arranged vertically at the front end of the main body of the cabinet.

7. The lithium battery swapping cabinet according to claim 1, characterized in that: The main body of the electrical cabinet is equipped with casters at the four corners of its bottom.

8. The lithium battery swapping cabinet according to claim 1, characterized in that: The top of the main body of the electrical cabinet is provided with a canopy, which covers the top of the main body of the electrical cabinet.

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