Lithium battery safety cabinet

Abstract

The utility model discloses a lithium battery safety cabinet which comprises a cabinet body and a temperature sensing spray head, a lithium battery is placed in the cabinet body, and a threading hole is formed in the side wall of the cabinet body; the charging power supply can be arranged inside or outside the cabinet body, the input end of the charging wire is connected with commercial power, and the output end is electrically connected with the lithium battery. A storage tank body is formed in the top end in the cabinet body and is filled with a fire extinguishing agent; the upper end of the barrel is detachably connected to the center of the outer side face of the bottom wall of the storage tank body, and an opening in the upper end of the barrel is a water inlet communicated with an inner cavity of the storage tank body; the upper end of the thermosensitive element blocks the water inlet, and the lower end of the thermosensitive element blocks the lower end opening of the barrel. The lithium battery safety cabinet designed by the utility model can extinguish fire in time, provide safety guarantee for charging and storage of the lithium battery, and reduce property loss and casualties.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery charging and storage, and more specifically, to a lithium battery safety cabinet. Background Art

[0002] Due to its excellent cycle performance, lithium batteries are widely used in energy storage stations, electric vehicles and consumer electronics products, and have developed rapidly in recent years. However, due to special chemical compositions, structures, stored electrical energy and other characteristics, lithium batteries are prone to thermal runaway in cases of overcharging, short circuit, mechanical damage, etc., which may lead to fire and explosion accidents, seriously restricting their development. Lithium battery fires are different from conventional fires. The battery contains a large amount of chemical energy inside, and the thermal runaway reaction occurs spontaneously and continuously, and the fire is extremely likely to reignite.

[0003] Therefore, how to provide a lithium battery safety cabinet that can extinguish fires in time, provide safety guarantees for lithium battery charging and storage, and reduce property losses and casualties is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0004] In view of this, the utility model provides a lithium battery safety cabinet, which can extinguish fires in time, provide safety guarantees for lithium battery charging and storage, and reduce property losses and casualties.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A lithium battery safety cabinet includes: a cabinet body and a temperature-sensitive sprinkler head;

[0007] The cabinet body can place lithium batteries, and a wire passing hole is provided on its side wall; during charging, the charging wire of the lithium battery can pass through the wire passing hole, the charging power supply is placed outside the cabinet body, and the input end of the charging wire is electrically connected to the external commercial power, and the output end of the charging wire can pass through the wire passing hole and be electrically connected to the lithium battery; or the charging power supply is placed inside the cabinet, the input end of the charging wire can pass through the wire passing hole and be electrically connected to the external commercial power, and the output end of the charging wire is electrically connected to the lithium battery; a storage tank body is provided at the top end inside the cabinet body, and a fire extinguishing agent is filled in the storage tank body;

[0008] The temperature-sensitive sprinkler head includes a cylinder body and a heat-sensitive element. The upper end of the cylinder body is detachably connected to the center position of the outer side surface of the bottom wall of the storage tank body, and its upper end opening is a water inlet and is communicated with the inner cavity of the storage tank body; the heat-sensitive element is located inside the cylinder body, its upper end blocks the water inlet, and its lower end blocks the lower end opening of the cylinder body.

[0009] Optionally, the heat-sensitive element can be a fusible alloy temperature-sensitive element, a glass sphere or other realizable structures; the most suitable structure can be selected according to the on-site situation for application.

[0010] When the heat-sensitive element is a fusible alloy temperature-sensitive element, it is sealed with a metal gasket, and the fusible alloy is usually in a compressed state. When the temperature reaches the preset value, the fusible alloy ruptures. The heat-sensitive element uses a fusible alloy, and the nozzle can be used in low-temperature protection places. Using fusible alloy materials, the operating temperature is more accurate and the response time is faster.

[0011] When the heat-sensitive element is a glass sphere, the glass sphere is filled with an organic solution with a high coefficient of thermal expansion. At normal temperature, the sphere can withstand a certain supporting force to ensure the sealing performance of the nozzle. When the temperature reaches the preset value, the temperature of the organic solution rises and expands, causing the sphere to rupture.

[0012] Through the above technical solutions, the present utility model provides a lithium battery safety cabinet. The storage and charging of lithium batteries can be realized through the setting of a separate cabinet body. Through the setting of the temperature-sensitive sprinkler head in the cabinet body, when the temperature in the area where the sprinkler head is located reaches the preset value, the heat-sensitive element quickly ruptures due to the increase in temperature, and the fire extinguishing agent in the storage tank sprays out of the cylinder due to its own gravity to extinguish the fire. The structure is simple, easy to use, and low in cost. It can extinguish the fire in the cabinet in time according to the temperature, improve the safety guarantee for the storage and charging of lithium batteries, and reduce property losses and casualties.

[0013] Furthermore, the bottom of the storage tank body has a circular arc transition surface all around. Through the setting of this structure, the inside of the storage tank body is smooth, which can avoid dead corners and improve the utilization rate of the fire extinguishing agent in the storage tank body.

[0014] Furthermore, the bottom wall of the storage tank body is provided with a threaded connection port, and the upper end of the cylinder is threadedly connected to the threaded connection port.

[0015] Preferably, the side wall of the cabinet body is provided with a louver-shaped ventilation opening. Through the setting of this structure, the cabinet body can be ventilated, and it can be used for explosion relief when an accident occurs.

[0016] Furthermore, the ventilation opening can be louver-shaped.

[0017] Preferably, the cabinet body is provided with an opening and closing cabinet door.

[0018] Furthermore, the cabinet door can be strengthened, and its strength is higher than other parts of the cabinet body.

[0019] Preferably, the bottom plate of the cabinet body is inclined downward from the side close to the cabinet door to the side far from the cabinet door.

[0020] Furthermore, it further includes a water blocking plate, which is vertically fixed above one end of the bottom plate close to the cabinet door.

[0021] Through the above technical solutions, through the setting of the water blocking plate, it can prevent the fire extinguishing agent from flowing out through the gap between the cabinet door and the cabinet body; through the setting of the bottom plate, it is beneficial to accumulate the fire extinguishing agent to soak the lithium battery to improve the fire extinguishing effect.

[0022] Preferably, the lithium battery safety cabinets can be used individually or in groups. When used in groups, a storage tank body is provided only at the top of the uppermost cabinet body, and a fire pipeline is connected thereto. The other end of the fire pipeline penetrates downward through a plurality of cabinet bodies, and a temperature-sensitive sprinkler head is provided in each corresponding cabinet body. When the temperature in the cabinet body reaches a preset value, the thermal-sensitive element in the temperature-sensitive sprinkler head ruptures, and the fire extinguishing agent is sprayed out from the temperature-sensitive sprinkler heads in each cabinet body through the fire pipeline to extinguish the fire.

[0023] Furthermore, the width of the storage tank body can be specifically set according to the actual situation. When reducing the cost of the fire extinguishing agent, a fire extinguishing agent with good effects can be used, and a small amount of fire extinguishing agent is added to the storage tank body. At this time, since the liquid level of the fire extinguishing agent is relatively low and the spraying pressure of the fire extinguishing agent is small, the width of the storage tank body can be reduced, and the height of the storage tank body can be appropriately increased to increase the spraying pressure of the fire extinguishing agent.

[0024] Furthermore, the bottom end of the cabinet body is fixed to the ground through expansion bolts. Through the setting of this structure, the cabinet body can be fixed to prevent the cabinet body from tipping over.

[0025] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a lithium battery safety cabinet. Compared with the prior art, the present invention can realize the storage and charging of lithium batteries through the setting of a single cabinet body; through the setting of a temperature-sensitive sprinkler head in the cabinet body, when the temperature in the area where the sprinkler head is located reaches a preset value, the thermal-sensitive element quickly ruptures due to the increase in temperature, and the fire extinguishing agent in the storage tank body sprays out of the cylinder due to its own gravity to extinguish the fire. The structure is simple, easy to use, and low in cost. It can extinguish the fire in the cabinet body in a timely manner according to the temperature, improve the safety guarantee for the storage and charging of lithium batteries, and reduce property losses and casualties. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0027] Figure 1 It is an overall view of a lithium battery safety cabinet of the present invention.

[0028] Figure 2 It is a cross-sectional view of the cabinet body provided by the present invention.

[0029] Figure 3 It is a cross-sectional view of the use of multiple groups of cabinet bodies of the present invention.

[0030] Among them, 1 is the cabinet body; 11 is the wire threading hole; 12 is the storage tank body; 13 is the ventilation opening; 14 is the bottom plate; 2 is the temperature-sensitive sprinkler head; 21 is the cylinder body; 22 is the thermal sensitive element; 3 is the water blocking plate; 4 is the cabinet door; 5 is the fire fighting pipeline. Detailed implementation mode

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] See the appendix Figure 1-2 In the embodiments of the present invention, a lithium battery safety cabinet is disclosed, including: a cabinet body 1 and a temperature-sensitive sprinkler head 2;

[0033] Lithium batteries can be placed inside the cabinet body 1, and a wire threading hole 11 is provided on its side wall. The charging power supply is placed outside the cabinet body 1, and the input end of the charging wire is electrically connected to the external commercial power, and its output end can pass through the wire threading hole 11 and be electrically connected to the lithium battery; or the charging power supply is placed inside the cabinet body 1, the input end of the charging wire can pass through the wire threading hole 11 and be electrically connected to the external commercial power, and the output end of the charging wire is electrically connected to the lithium battery; a storage tank body 12 is provided at the top end inside the cabinet body 1, and a fire extinguishing agent is filled in the storage tank body 12;

[0034] The temperature-sensitive sprinkler head 2 includes a cylinder body 21 and a thermal sensitive element 22. The upper end of the cylinder body 21 is detachably connected to the outer side surface of the bottom wall of the storage tank body 12, and its upper end opening is the water inlet and is communicated with the inner cavity of the storage tank body 12; the thermal sensitive element 22 is located inside the cylinder body 21, its upper end blocks the water inlet, and its lower end blocks the lower end opening of the cylinder body 21.

[0035] Specifically, the thermal sensitive element 22 can be a fusible alloy thermal sensitive element, sealed with a metal gasket, and the fusible alloy is usually in a compressed state. When the temperature reaches the preset value, the fusible alloy breaks. The heat sensitive element uses a fusible alloy, and the sprinkler head can be used in low-temperature protection places. Using a fusible alloy material, the action temperature is more accurate and the response time is faster.

[0036] Specifically, the bottom of the storage tank body 12 is surrounded by an arc transition surface on all sides.

[0037] Specifically, a threaded connection port is provided on the bottom wall of the storage tank body 12, and the upper end of the cylinder body 21 is threadedly connected to the threaded connection port.

[0038] Specifically, the cabinet body 1 is provided with a cabinet door 4, and the cabinet door 4 can be strengthened, and its strength is higher than other parts of the cabinet body.

[0039] In some specific embodiments, a ventilation opening 13 is provided in the side wall of the cabinet body 1. Specifically, the ventilation opening 13 can be of a louver type.

[0040] In some other specific embodiments, the bottom plate 14 of the cabinet body 1 slopes downward from the side close to the cabinet door 4 to the side far from the cabinet door 4.

[0041] Specifically, a water blocking plate 3 is further included, and the water blocking plate 3 is vertically fixed to one end of the bottom plate 14 close to the cabinet door 4.

[0042] In some other specific embodiments, the lithium battery safety cabinet can be used singly or in groups. When used in groups, refer to the appendix Figure 3 , only a storage tank body is provided at the top of the uppermost cabinet body 1, and a fire fighting pipeline 5 is connected thereto. The other end of the fire fighting pipeline 5 penetrates downward through a plurality of cabinet bodies 1, and a temperature sensing sprinkler head 2 is provided in each corresponding cabinet body 1. When the temperature in the cabinet body 1 reaches a preset value, the thermal sensitive element 22 in the temperature sensing sprinkler head 2 ruptures, and the fire extinguishing agent is sprayed out from the temperature sensing sprinkler heads 2 in each cabinet through the fire fighting pipeline 5 to extinguish the fire.

[0043] The lithium battery safety cabinet designed according to the present invention can realize the storage and charging of lithium batteries through the setting of a single cabinet body; through the setting of the temperature sensing sprinkler heads in the cabinet body, when the temperature in the area where the sprinkler heads are located reaches the preset value, the thermal sensitive elements quickly rupture due to the increase in temperature, and the fire extinguishing agent in the storage tank body sprays out of the cylinder due to its own gravity to extinguish the fire. The structure is simple, the use is convenient, the cost is low, it can extinguish the fire in the cabinet in time according to the temperature, improves the safety guarantee for the storage and charging of lithium batteries, and reduces property losses and casualties.

[0044] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lithium battery safety cabinet, characterized in that: include: Cabinet (1) and temperature-sensitive sprinkler head (2); The cabinet (1) is provided with a lithium battery, and a threading hole (11) is provided on its side wall; a charging power source is placed outside the cabinet (1) and an input end of a charging cable is electrically connected to an external mains power source, while an output end thereof can pass through the threading hole (11) to be electrically connected to the lithium battery; or the charging power source is placed inside the cabinet (1), and an input end of the charging cable can pass through the threading hole (11) to be electrically connected to an external mains power source, while an output end of the charging cable is electrically connected to the lithium battery; a storage tank (12) is provided at the top end of the cabinet (1), and a fire extinguishing agent is filled in the storage tank (12); The temperature-sensitive shower head (2) comprises a barrel (21) and a thermal element (22); the upper end of the barrel (21) is detachably connected to the outer side surface of the bottom wall of the storage tank (12); the upper end opening is a water inlet and is connected to the inner cavity of the storage tank (12); the thermal element (22) is located inside the barrel (21) and its upper end blocks the water inlet, while its lower end blocks the lower end opening of the barrel (21).

2. A lithium battery safety cabinet according to claim 1, characterized in that: The bottom of the storage tank body (12) is surrounded by arc transition surfaces.

3. A lithium battery safety cabinet according to claim 1, characterized in that: The bottom wall of the storage tank body (12) is provided with a threaded connection port, and the upper end of the cylinder body (21) is threadedly connected to the threaded connection port.

4. A lithium battery safety cabinet according to claim 1, characterized in that: A ventilation hole (13) is provided on the side wall of the cabinet (1).

5. A lithium battery safety cabinet according to claim 1, characterized in that: The cabinet body (1) is provided with a cabinet door (4).

6. A lithium battery safety cabinet according to claim 5, characterized in that: The bottom plate (14) of the cabinet body (1) slopes downward from a side close to the cabinet door (4) to a side away from the cabinet door (4).

7. A lithium battery safety cabinet according to claim 6, characterized in that: It also comprises a water blocking plate (3), wherein the water blocking plate (3) is vertically fixed to one end of the bottom plate (14) close to the cabinet door (4).

8. A lithium battery safety cabinet according to claim 1, characterized in that: The bottom end of the cabinet (1) is fixed to the ground via expansion bolts.

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