Household small-sized electric power energy storage equipment

Abstract

The utility model relates to the field of energy storage batteries, and discloses household small-sized electric energy storage equipment which comprises an outer fireproof box, a lithium battery box is fixedly mounted in the outer fireproof box through arranged bolts, a lithium battery pack is arranged in the lithium battery box, and a sealing box cover is fixedly mounted on the top surface of the outer fireproof box through arranged bolts. When the smoke in the outer fireproof box exceeds a set value on the smoke sensor, the smoke sensor outputs a voltage signal to the controller, and the controller feeds back a voltage signal to the electric control valve connected with the surface of the conveying pipe to open the electric control valve; therefore, gas with certain pressure in the carbon dioxide fire extinguishing agent enters the rectangular gas supply pipe through the connecting conveying pipe and is sprayed out through the gas supply nozzles, flame generated by a lithium battery pack in the lithium battery box can be suffocated conveniently, the temperature of the battery is reduced, the fireproof and explosion-proof effects are achieved, and the flame generated by the lithium battery pack is prevented from spreading as much as possible.

Description

Technical Field

[0001] The present application belongs to the technical field of energy storage batteries, and specifically relates to a small household power storage device. Background Art

[0002] Small-scale power energy storage devices refer to energy storage systems with a capacity usually ranging from a few kilowatt-hours (kWh) to tens of kilowatt-hours (kWh). They are usually used in residences, small businesses, off-grid systems and microgrids. Most common power energy storage devices use lithium-ion batteries, lead-acid batteries or other types of batteries to store electrical energy and release it when needed.

[0003] For example, a utility model patent with announcement number CN215644755U discloses an energy storage lithium-ion battery pack, including a battery pack case, a smart digital display module is embedded in the top of the front center of the battery pack case, a plurality of dust-proof and heat-dissipating holes are provided at the bottom of the center of both sides of the battery pack case, a plurality of output wiring ports are evenly fixedly connected to the top of the center of one side of the battery pack case, a first locking assembly is fixedly connected to both sides of the top of the front center of the battery pack case, and a box cover is rotatably connected to the rear end of the top center of the battery pack case. The utility model is provided with a plurality of output wiring ports on the top of one side of the battery pack case, and the output wiring ports are composed of wiring pieces, adapter pieces, rotating pins, torsion springs and rebound plates. The rebound plate can automatically rebound and deflect under the joint action of the rotating pin and the torsion spring, so that the interior of the output wiring port can be protected when it is not in use, and it will deflect toward the inside of the output wiring port when it is pressed during use, which is convenient to use and has a good protection effect.

[0004] However, it was found during actual use that: the device installs the energy storage lithium-ion battery pack through the battery pack box, thereby achieving sealed protection for the energy storage lithium-ion battery pack. However, due to its own structure, principle and other characteristics, the energy storage lithium-ion battery pack is prone to fire due to overcharging, over-discharging, mechanical damage and external short circuit. When a lithium-ion battery catches fire, the battery pack box cannot prevent the fire from spreading well, which can easily lead to fires in residences and small businesses with more serious consequences. For this purpose, a household small-scale power energy storage device is provided. Utility Model Content

[0005] The purpose of this application is to provide a small household power storage device in order to solve the above-mentioned problems.

[0006] The technical solution adopted in the present application is as follows: A household small-scale electric energy storage device comprises an outer fireproof box, a lithium battery box is fixedly installed inside the outer fireproof box by means of bolts, a lithium battery pack is arranged inside the lithium battery box, a sealed box cover is fixedly installed on the top surface of the outer fireproof box by means of bolts, a rectangular air supply pipe is fixedly installed on the inner side wall of the outer fireproof box, an air supply nozzle is fixedly installed on the outer surface of the rectangular air supply pipe, a mounting bracket is fixedly installed on the left side of the outer fireproof box, a carbon dioxide fire extinguishing agent is fixedly installed inside the mounting bracket, a connecting delivery pipe is fixedly installed at the exhaust end of the carbon dioxide fire extinguishing agent, an electric-controlled valve is arranged on the outer surface of the connecting delivery pipe, one end of the connecting delivery pipe extends to the interior of the outer fireproof box and is fixed to the outer surface of the rectangular air supply pipe, a smoke sensor is fixedly installed on the top surface of the outer fireproof box, and the detection end of the smoke sensor extends to the interior of the outer fireproof box.

[0007] In a preferred embodiment, a cooling fan is fixedly installed on the left side of the outer fireproof box, and a ventilation hole is opened on the right side of the outer fireproof box.

[0008] In a preferred embodiment, a joint mounting plate is fixedly mounted on the front side of the outer fireproof box.

[0009] In a preferred embodiment, two handles are fixedly mounted on the top surface of the sealed box cover, and sponge covers are fixedly mounted on the outer surfaces of the two handles.

[0010] In a preferred embodiment, a plurality of mounting seats are fixedly mounted on the left and right sides of the outer fireproof box, respectively, and pull rings are rotatably connected inside the plurality of mounting seats.

[0011] In a preferred embodiment, a plurality of air supply nozzles are installed on the outer surface of the rectangular air supply pipe in a rectangular array.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0013] 1. In the present application, due to the adoption of the above-mentioned scheme, when a lithium battery pack catches fire during long-term use, the smoke sensor is provided to monitor the smoke inside the external fireproof box. When the smoke inside the external fireproof box exceeds the set value on the smoke sensor, the smoke sensor outputs a voltage signal to the controller, and the controller feeds back a voltage signal to the electrically controlled valve connected to the surface of the delivery pipe to open it, so that the gas with a certain pressure inside the carbon dioxide fire extinguishing agent enters the interior of the rectangular gas supply pipe through the connected delivery pipe and is sprayed out through multiple gas supply nozzles, so as to suffocate the flame generated by the lithium battery pack inside the lithium battery box and reduce the battery temperature, thereby achieving fire prevention and explosion prevention effects, and avoiding the spread of the flame generated by the lithium battery pack as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the internal structure of the external fireproof box of the present application;

[0016] Figure 3 This is a schematic diagram of the rectangular air supply pipe of the present application without installation.

[0017] Markings in the figure: 1. External fireproof box; 2. Lithium battery box; 3. Sealed box cover; 4. Rectangular air supply pipe; 5. Air supply nozzle; 6. Mounting bracket; 7. Carbon dioxide fire extinguishing agent; 8. Connecting delivery pipe; 9. Smoke sensor; 10. Cooling fan; 11. Connector mounting plate; 12. Handle; 13. Mounting base; 14. Pull ring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] refer to Figure 1 , Figure 2 and Figure 3 A small household electric energy storage device includes an external fireproof box 1, and a plurality of mounting seats 13 are fixedly installed on the left and right sides of the external fireproof box 1, and the interiors of the plurality of mounting seats 13 are rotatably connected with pull rings 14; the pull rings 14 are provided to facilitate carrying the external fireproof box 1, thereby improving convenience.

[0020] refer to Figure 1 , Figure 2 A lithium battery box 2 is fixedly installed inside the outer fireproof box 1 by means of set bolts, and a lithium battery pack is arranged inside the lithium battery box 2; the outer fireproof box 1 is provided to facilitate protection of the lithium battery box 2, and the lithium battery box 2 is provided to facilitate installation of the lithium battery pack to form an electric energy storage device.

[0021] refer to Figure 1 , Figure 2 A connector mounting plate 11 is fixedly installed on the front side of the outer fireproof box 1; the connector is easily installed by setting the mounting plate 11, and the connector mounting plate 11 is connected to the lithium battery pack through a cable, so that it is convenient for personnel to connect to external equipment through the connector, which is convenient for discharging or charging operations.

[0022] refer to Figure 1 , Figure 2 The top surface of the outer fireproof box 1 is fixedly installed with a sealed box cover 3 by means of provided bolts, and the top surface of the sealed box cover 3 is fixedly installed with two handles 12, and the outer surfaces of the two handles 12 are fixedly installed with sponge sheaths; the provided handles 12 facilitate the installation and disassembly of the sealed box cover 3.

[0023] refer to Figure 1 , Figure 2 and Figure 3 A rectangular air supply pipe 4 is fixedly installed on the inner wall of the outer fireproof box 1, and an air supply nozzle 5 is fixedly installed on the outer surface of the rectangular air supply pipe 4. The outer surface of the rectangular air supply pipe 4 is installed with multiple air supply nozzles 5 in a rectangular array; the rectangular air supply pipe 4 is set up to facilitate the installation of multiple air supply nozzles 5.

[0024] refer to Figure 1 , Figure 2 A mounting bracket 6 is fixedly installed on the left side of the outer fireproof box 1, and a carbon dioxide fire extinguishing agent 7 is fixedly installed inside the mounting bracket 6; by setting the mounting bracket 6, it is convenient to install the carbon dioxide fire extinguishing agent 7 inside it, which is convenient for subsequent fire extinguishing operations on the lithium battery pack.

[0025] refer to Figure 1 , Figure 2 , the exhaust end of the carbon dioxide fire extinguishing agent 7 is fixedly installed with a connecting delivery pipe 8, and an electric control valve is arranged on the outer surface of the connecting delivery pipe 8. One end of the connecting delivery pipe 8 extends to the interior of the outer fireproof box 1 and is fixed to the outer surface of the rectangular air supply pipe 4. A smoke sensor 9 is fixedly installed on the top surface of the outer fireproof box 1, and the detection end of the smoke sensor 9 extends to the interior of the outer fireproof box 1; the smoke sensor 9 and the electric control valve are connected to the control element installed on the top of the sealed box cover 3, and the control element can be a PLC controller, a single-chip microcomputer, etc. The smoke sensor 9 and the electric control valve are existing structures and can be purchased directly on the market. This application only uses them without improving their structure. No more details are given here. The smoke sensor 9 is arranged to facilitate the monitoring of the smoke inside the outer fireproof box 1. When the smoke inside the outer fireproof box 1 is large, it can be roughly judged that a fire has occurred, so as to facilitate the feedback signal to the control element, so as to facilitate the carbon dioxide fire extinguishing agent 7 to open the fire generated inside the outer fireproof box 1 for fire extinguishing operation.

[0026] refer to Figure 1 , Figure 2 A cooling fan 10 is fixedly installed on the left side of the outer fireproof box 1, and a ventilation hole is opened on the right side of the outer fireproof box 1; the cooling fan 10 and the ventilation hole are provided to improve the heat dissipation effect of the lithium battery box 2.

[0027] The implementation principle of an embodiment of a household small-scale power storage device of the present application is as follows: the user first installs the lithium battery pack inside the lithium battery box 2, so as to facilitate the sealing and protection of the lithium battery pack, and then installs the lithium battery box 2 inside the external fireproof box 1 through bolts, and then connects the connecting cable on the lithium battery pack to the connector mounting plate 11, so as to facilitate the personnel to connect the lithium battery pack with external equipment through the cable connector, and facilitate the discharge or charging operation of the lithium battery pack. When the lithium battery pack has a flame during long-term use, the smoke sensor 9 is provided at this time to facilitate the The smoke inside the outer fireproof box 1 is monitored. When the smoke inside the outer fireproof box 1 exceeds the set value on the smoke sensor 9, the smoke sensor 9 outputs a voltage signal to the controller. The controller controls the electric control valve on the surface of the connecting delivery pipe 8 to open, so that the gas with a certain pressure inside the carbon dioxide fire extinguishing agent 7 enters the interior of the rectangular air supply pipe 4 through the connecting delivery pipe 8 and is sprayed out through multiple air supply nozzles 5, which is convenient for suffocating the flame generated by the lithium battery pack inside the lithium battery box 2 and reducing the battery temperature, thereby achieving fire prevention and explosion prevention effects, avoiding the spread of flames generated by the lithium battery pack as much as possible, and improving safety.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A small household power storage device, comprising an external fireproof box (1), characterized in that: A lithium battery box (2) is fixedly installed inside the outer fireproof box (1) by means of bolts, a lithium battery pack is arranged inside the lithium battery box (2), a sealed box cover (3) is fixedly installed on the top surface of the outer fireproof box (1) by means of bolts, a rectangular air supply pipe (4) is fixedly installed on the inner wall of the outer fireproof box (1), an air supply nozzle (5) is fixedly installed on the outer surface of the rectangular air supply pipe (4), a mounting bracket (6) is fixedly installed on the left side of the outer fireproof box (1), and the mounting bracket ( 6) is fixedly installed with a carbon dioxide fire extinguishing agent (7), the exhaust end of the carbon dioxide fire extinguishing agent (7) is fixedly installed with a connecting and conveying pipe (8), the outer surface of the connecting and conveying pipe (8) is provided with an electric control valve, one end of the connecting and conveying pipe (8) extends to the inside of the outer fireproof box (1) and is fixed to the outer surface of the rectangular air supply pipe (4), and a smoke sensor (9) is fixedly installed on the top surface of the outer fireproof box (1), and the detection end of the smoke sensor (9) extends to the inside of the outer fireproof box (1).

2. A small household power storage device as claimed in claim 1, characterized in that: A heat dissipation fan (10) is fixedly installed on the left side of the outer fireproof box (1), and a ventilation hole is opened on the right side of the outer fireproof box (1).

3. A small household power storage device as claimed in claim 1, characterized in that: A joint mounting plate (11) is fixedly mounted on the front side of the outer fireproof box (1).

4. A small household power storage device as claimed in claim 1, characterized in that: Two handles (12) are fixedly mounted on the top surface of the sealed box cover (3), and sponge protective covers are fixedly mounted on the outer surfaces of the two handles (12).

5. A small household power storage device as claimed in claim 1, characterized in that: A plurality of mounting seats (13) are fixedly mounted on the left and right sides of the outer fireproof box (1), and pull rings (14) are rotatably connected inside the plurality of mounting seats (13).

6. A small household power storage device as claimed in claim 1, characterized in that: The outer surface of the rectangular air supply pipe (4) is provided with a plurality of air supply nozzles (5) in a rectangular array.

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