Fireproof lithium battery module and storage battery device

Abstract

The utility model provides a fireproof lithium battery module and a storage battery device. The fireproof lithium battery module comprises a plurality of lithium battery assemblies, a fire extinguishing device and a controller, wherein the fire extinguishing device comprises an aerosol tank, a conveying pipe, a shunting piece, a temperature sensor, a spraying pipe, a switching valve and a flow control valve. The conveying pipe is communicated with the aerosol tank, the plurality of shunting pieces are respectively communicated with the input pipe and respectively correspond to the plurality of lithium battery assemblies, the plurality of temperature sensors are respectively arranged on the plurality of shunting pieces, the plurality of temperature sensors are respectively connected to the plurality of lithium battery assemblies, and each temperature sensor is electrically connected with the controller. The multiple spraying pipes communicate with the multiple flow dividing pieces correspondingly. The plurality of switch valves are respectively communicated with the plurality of spraying pipes, the plurality of switch valves are respectively communicated with the plurality of lithium battery assemblies, and each switch valve is electrically connected with the controller. The plurality of flow control valves are respectively arranged on the plurality of spraying pipes, and each flow control valve is also electrically connected with the controller. Therefore, the waste of aerosol is inhibited.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery devices, and in particular to a fireproof lithium battery module and a battery device. Background Art

[0002] The battery device is used to provide power to users and can also be called an energy storage battery device. The battery device includes multiple lithium battery modules. Under abnormal conditions such as overcharging, short circuit, and high temperature of the lithium battery module, thermal runaway is prone to occur, and even fires may occur. This risk exists not only in the single battery, but may also spread rapidly to the entire battery device through the mutual influence between batteries. Once a fire occurs, it will not only cause huge economic losses, but also pose a serious threat to personnel safety.

[0003] In order to avoid the problem of thermal runaway of lithium battery modules, a fire extinguishing device is usually installed in the lithium battery module. When the temperature of the lithium battery module is out of control, the fire extinguishing device is used to cool down and extinguish the lithium battery module to avoid the problem of fire. CN220714626U discloses a safe fire extinguishing device for energy storage batteries, which uses sand and water to extinguish the battery fire. Although sand and water can suppress the fire to a certain extent, their fire extinguishing efficiency is relatively low, and sand needs to cover a large area of ​​the fire source to be effective.

[0004] In order to improve the efficiency of fire extinguishing, the industry mainly uses aerosol fire extinguishing devices to extinguish fires. For example, CN219501905U discloses an energy storage battery compartment fire aerosol fire extinguishing device. When the battery temperature exceeds a preset value, the temperature sensor will transmit the temperature to the central control computer. At this time, the central control computer will issue a command to control the solenoid valve to open, and the aerosol released by the battery valve will be used to extinguish the fire.

[0005] However, when the temperature of the battery exceeds the predetermined value by a small amount, only a small amount of aerosol is needed to complete the cooling. However, at this time, the aerosol of the fire extinguisher is directly sprayed out through the solenoid valve, which is more likely to cause the fire extinguisher to spray a large amount, and thus more likely to cause a waste of aerosol. Utility Model Content

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a fireproof lithium battery module and a battery device that suppress aerosol waste.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A fireproof lithium battery module, comprising a plurality of lithium battery assemblies arranged at intervals, a fire extinguishing device and a controller, wherein the fire extinguishing device comprises:

[0009] Aerosol cans;

[0010] a delivery pipe, the input end of which is connected to the output end of the aerosol can;

[0011] A flow divider, wherein the input ends of the plurality of flow dividers are respectively connected to the delivery pipe, and the plurality of flow dividers are respectively arranged corresponding to the plurality of lithium battery assemblies;

[0012] A temperature sensor, wherein a plurality of the temperature sensors are respectively mounted on a plurality of the shunt members, detection ends of the plurality of the temperature sensors are respectively connected to surfaces of a plurality of the lithium battery assemblies, and each of the temperature sensors is electrically connected to the controller;

[0013] A spray pipe, wherein the input ends of the plurality of spray pipes are respectively connected to the output ends of the plurality of flow dividers;

[0014] Switch valves, the input ends of the plurality of switch valves are respectively connected to the output ends of the plurality of ejection pipes, the output ends of the plurality of switch valves are respectively connected to the inner cavities of the plurality of lithium battery assemblies, and each of the switch valves is electrically connected to the controller;

[0015] A flow control valve, wherein the plurality of flow control valves are respectively arranged on the plurality of the ejection pipes, each of the flow control valves is also electrically connected to the controller, and each of the flow control valves is used to control the flow of the corresponding ejection pipe.

[0016] In some embodiments, the fire extinguishing device also includes multiple pressurized air pumps, and the multiple pressurized air pumps are respectively arranged on the multiple ejection pipes, each of the pressurized air pumps is arranged adjacent to the input end of the corresponding ejection pipe, and each of the flow control valves is arranged adjacent to the output end of the corresponding ejection pipe.

[0017] In some embodiments, the pressurized air pump is a micro air pump.

[0018] In some of the embodiments, each of the ejection pipes includes an input pipe and an output pipe, the input end of the input pipe of each of the ejection pipes is connected to the output end of the corresponding diverter, the output end of the input pipe of each of the ejection pipes is connected to the input end of the corresponding pressurized air pump, the input end of the output pipe of each of the ejection pipes is connected to the output end of the corresponding pressurized air pump, and the output end of the output pipe of each of the ejection pipes is connected to the corresponding switch valve.

[0019] In some embodiments, the input tube is a soft structure.

[0020] In some embodiments, the output tube is a flexible structure.

[0021] In some embodiments, the switch valve is a solenoid valve.

[0022] In some embodiments, the delivery pipe includes a plurality of pipe bodies connected in sequence.

[0023] In some embodiments, the tube is made of PVC.

[0024] A battery device comprises the fireproof lithium battery module described in any one of the above embodiments.

[0025] Compared with the prior art, the present invention has at least the following advantages:

[0026] When the temperature of the lithium battery assembly reaches a predetermined value, the detection end of the temperature sensor detects the corresponding temperature and feeds back to the controller. The controller controls the switch valve to open. The controller also adjusts the opening of the flow control valve according to the received temperature. The higher the received temperature, the larger the opening of the flow control valve, and the more aerosol is sprayed out of the switch valve, so that the opening of the flow control valve is adapted to the temperature, and then the aerosol sprayed out of the switch valve is adapted to the temperature, thereby suppressing the waste of aerosol and reducing the cost of the fireproof lithium battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a schematic structural diagram of a battery device according to an embodiment;

[0029] Figure 2 for Figure 1 An enlarged schematic diagram of the battery device shown at A;

[0030] Figure 3 for Figure 1 A schematic structural diagram of a fireproof lithium battery module of a battery device shown;

[0031] Figure 4 for Figure 3 An enlarged schematic diagram of the fireproof lithium battery module shown at B;

[0032] Figure 5 A schematic structural diagram of a fireproof lithium battery module of a battery device according to another embodiment;

[0033] Figure 6 for Figure 5 The enlarged structural schematic diagram of the fireproof lithium battery module at C is shown.

[0034] Figure numerals: 10, battery device; 10a, fireproof lithium battery module; 100, lithium battery assembly; 200, fire extinguishing device; 210, aerosol can; 220, delivery pipe; 230, diverter; 240, temperature sensor; 250, ejection pipe; 251, input pipe; 252, output pipe; 260, switch valve; 270, flow control valve; 280, pressurized air pump; 300, controller; 10b, storage cabinet. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] The present disclosure provides a fireproof lithium battery module, including a plurality of lithium battery assemblies arranged at intervals, a fire extinguishing device and a controller, wherein the fire extinguishing device includes an aerosol can, a delivery pipe, a diverter, a temperature sensor, an ejection pipe, a switch valve and a flow control valve. Among them, the input end of the delivery pipe is connected to the output end of the aerosol can, the input ends of the plurality of diverters are respectively connected to the delivery pipe, the plurality of diverters are respectively arranged corresponding to the plurality of lithium battery assemblies, the plurality of temperature sensors are respectively installed on the plurality of diverters, the detection ends of the plurality of temperature sensors are respectively connected to the surfaces of the plurality of lithium battery assemblies, and each temperature sensor is electrically connected to the controller. The input ends of the plurality of ejection pipes are respectively connected to the output ends of the plurality of diverters. The input ends of the plurality of switch valves are respectively connected to the output ends of the plurality of ejection pipes, the output ends of the plurality of switch valves are respectively connected to the inner cavities of the plurality of lithium battery assemblies, and each switch valve is electrically connected to the controller. The plurality of flow control valves are respectively arranged on the plurality of ejection pipes, each flow control valve is also electrically connected to the controller, and each flow control valve is used to control the flow of the corresponding ejection pipe. The present disclosure also provides a battery device, comprising the above-mentioned fireproof lithium battery module.

[0039] In the above-mentioned fireproof lithium battery module and battery device, when the temperature of the lithium battery assembly reaches a predetermined value, the detection end of the temperature sensor detects the corresponding temperature and feeds back to the controller, and the controller controls the switch valve to open. The controller also adjusts the opening of the flow control valve according to the received temperature. When the received temperature is higher, the opening of the flow control valve is larger, and the more aerosol is sprayed from the switch valve, so that the opening of the flow control valve is adapted to the temperature, and then the aerosol sprayed from the switch valve is adapted to the temperature, thereby suppressing the waste of aerosol and reducing the cost of the fireproof lithium battery module.

[0040] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0041] like Figure 1 As shown, a battery device 10 of an embodiment includes a fireproof lithium battery module 10a and a storage cabinet 10b, and the fireproof lithium battery module 10a is placed in the storage cabinet 10b.

[0042] like Figures 1 to 4As shown, in some embodiments, the fireproof lithium battery module 10a includes a plurality of lithium battery assemblies 100 arranged at intervals, a fire extinguishing device 200 and a controller 300. The fire extinguishing device 200 includes an aerosol can 210, a delivery pipe 220, a diverter 230, a temperature sensor 240, a spray pipe 250, a switch valve 260 and a flow control valve 270. Among them, the input end of the delivery pipe 220 is connected to the output end of the aerosol can 210, and the input ends of the plurality of diverters 230 are respectively connected to the delivery pipe 220, so that the aerosol in the aerosol can 210 can be delivered to the separation element. Multiple flow dividers 230 are respectively arranged corresponding to multiple lithium battery assemblies 100, and multiple temperature sensors 240 are respectively installed on multiple flow dividers 230. The detection ends of multiple temperature sensors 240 are respectively connected to the surfaces of multiple lithium battery assemblies 100. Each temperature sensor 240 is used to detect the temperature of the corresponding lithium battery assembly 100. Each temperature sensor 240 is electrically connected to the controller 300, so that the temperature detected by each temperature sensor 240 is fed back to the controller 300. The input ends of multiple ejection pipes 250 are respectively connected to the output ends of multiple flow dividers 230, so that the aerosol in the aerosol can 210 can be delivered to the ejection pipe 250. The input ends of the plurality of switch valves 260 are respectively connected to the output ends of the plurality of ejection pipes 250, and the output ends of the plurality of switch valves 260 are respectively connected to the inner cavities of the plurality of lithium battery assemblies 100, so that the aerosol ejected from the aerosol can 210 can enter the inner cavity of the lithium battery assembly 100 through the delivery pipe 220, the flow divider 230, the ejection pipe 250 and the switch valve 260, thereby enabling the aerosol can 210 to cool down and extinguish the lithium battery assembly 100. Each switch valve 260 is electrically connected to the controller 300, so that the controller 300 controls the on and off of each switch valve 260. A plurality of flow control valves 270 are respectively disposed on the plurality of ejection pipes 250, and each flow control valve 270 is also electrically connected to the controller 300, so that the controller 300 can control the opening of each flow control valve, thereby enabling each flow control valve 270 to control the flow of the corresponding ejection pipe 250.

[0043] like Figures 1 to 4 As shown, in this embodiment, when the temperature of the lithium battery assembly 100 reaches a predetermined value, the detection end of the temperature sensor 240 detects the corresponding temperature and feeds back to the controller 300, and the controller 300 controls the switch valve 260 to open. The controller 300 also adjusts the opening of the flow control valve 270 according to the received temperature. When the received temperature is higher, the opening of the flow control valve 270 is larger, so that the opening of the flow control valve is adapted to the temperature, and then the aerosol sprayed from the switch valve 260 is adapted to the temperature.

[0044] It should be noted that the control method of the controller belongs to the prior art and is no longer within the protection scope of the present disclosure. The present disclosure protects the structure and position connection relationship of the fireproof lithium battery module and the battery device.

[0045] In the above-mentioned fireproof lithium battery module 10a, when the temperature of the lithium battery assembly 100 reaches a predetermined value, the detection end of the temperature sensor 240 detects the corresponding temperature and feeds back to the controller 300, and the controller 300 controls the switch valve 260 to open. The controller 300 also adjusts the opening of the flow control valve 270 according to the received temperature. When the received temperature is higher, the opening of the flow control valve 270 is larger, and the more aerosol is sprayed out of the switch valve 260, so that the opening of the flow control valve is adapted to the temperature, and then the aerosol sprayed out of the switch valve 260 is adapted to the temperature, thereby suppressing the waste of aerosol and reducing the cost of the fireproof lithium battery module 10a.

[0046] like Figure 5 and Figure 6 As shown, in other embodiments, the fire extinguishing device 200 further includes a plurality of pressurized air pumps 280, which are respectively disposed on a plurality of ejection pipes 250, each pressurized air pump 280 is disposed adjacent to the input end of the corresponding ejection pipe 250, and each flow control valve 270 is disposed adjacent to the output end of the corresponding ejection pipe 250. In this embodiment, when the temperature detected by the temperature sensor 240 is high, the ejection pipe 250 is pressurized so that the aerosol flow rate of the ejection pipe 250 increases, which is beneficial to improving the extinguishing efficiency.

[0047] like Figure 6 As shown, in some of the embodiments, the pressurized air pump 280 is a micro air pump, which makes the structure more compact.

[0048] like Figure 6 As shown, in some embodiments, each ejection pipe 250 includes an input pipe 251 and an output pipe 252, the input end of the input pipe 251 of each ejection pipe 250 is connected to the output end of the corresponding diverter 230, the output end of the input pipe 251 of each ejection pipe 250 is connected to the input end of the corresponding pressurized air pump 280, the input end of the output pipe 252 of each ejection pipe 250 is connected to the output end of the corresponding pressurized air pump 280, and the output end of the output pipe 252 of each ejection pipe 250 is connected to the corresponding switch valve 260.

[0049] like Figure 6 As shown, in some of the embodiments, the input tube 251 is a soft structure, which improves the convenience of installing the pressurized air pump 280.

[0050] like Figure 6 As shown, in some of the embodiments, the output tube 252 is a soft structure, which improves the installation convenience of the pressurized air pump 280.

[0051] like Figure 6 As shown, in some embodiments, the switch valve 260 is a solenoid valve.

[0052] like Figure 5 As shown, in some embodiments, the delivery tube 220 includes a plurality of tube bodies connected in sequence, so that the length of the delivery tube 220 can be longer.

[0053] In some embodiments, the tube is made of PVC.

[0054] Compared with the prior art, the present invention has at least the following advantages:

[0055] When the temperature of the lithium battery assembly reaches a predetermined value, the detection end of the temperature sensor detects the corresponding temperature and feeds back to the controller. The controller controls the switch valve to open. The controller also adjusts the opening of the flow control valve according to the received temperature. The higher the received temperature, the larger the opening of the flow control valve, and the more aerosol is sprayed out of the switch valve, so that the opening of the flow control valve is adapted to the temperature, and then the aerosol sprayed out of the switch valve is adapted to the temperature, thereby suppressing the waste of aerosol and reducing the cost of the fireproof lithium battery module.

[0056] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. A fireproof lithium battery module, comprising a plurality of lithium battery assemblies (100) arranged at intervals, a fire extinguishing device (200) and a controller (300), characterized in that: The fire extinguishing device (200) comprises: Aerosol can (210); A delivery pipe (220), wherein an input end of the delivery pipe (220) is connected to an output end of the aerosol can (210); A flow divider (230), wherein the input ends of the plurality of flow dividers (230) are respectively connected to the delivery pipe (220), and the plurality of flow dividers (230) are respectively arranged corresponding to the plurality of lithium battery assemblies (100); a temperature sensor (240), wherein a plurality of the temperature sensors (240) are respectively mounted on a plurality of the flow dividers (230), detection ends of the plurality of the temperature sensors (240) are respectively connected to surfaces of a plurality of the lithium battery assemblies (100), and each of the temperature sensors (240) is electrically connected to the controller (300); An ejection pipe (250), wherein the input ends of the plurality of ejection pipes (250) are respectively connected to the output ends of the plurality of flow dividing members (230); a switch valve (260), wherein the input ends of the plurality of switch valves (260) are respectively connected to the output ends of the plurality of ejection pipes (250), the output ends of the plurality of switch valves (260) are respectively connected to the inner cavities of the plurality of lithium battery assemblies (100), and each of the switch valves (260) is electrically connected to the controller (300); A flow control valve (270), wherein a plurality of the flow control valves (270) are respectively arranged on a plurality of the ejection pipes (250), and each of the flow control valves (270) is also electrically connected to the controller (300), and each of the flow control valves (270) is used to control the flow of the corresponding ejection pipe (250).

2. The fireproof lithium battery module according to claim 1, characterized in that: The fire extinguishing device (200) further comprises a plurality of pressurized air pumps (280), wherein the plurality of pressurized air pumps (280) are respectively arranged on the plurality of ejection pipes (250), each of the pressurized air pumps (280) is arranged adjacent to the input end of the corresponding ejection pipe (250), and each of the flow control valves (270) is arranged adjacent to the output end of the corresponding ejection pipe (250).

3. The fireproof lithium battery module according to claim 2, characterized in that: The pressurized air pump (280) is a micro air pump.

4. The fireproof lithium battery module according to claim 2, characterized in that: Each of the ejection pipes (250) comprises an input pipe (251) and an output pipe (252); the input end of the input pipe (251) of each of the ejection pipes (250) is connected to the output end of the corresponding diverter (230); the output end of the input pipe (251) of each of the ejection pipes (250) is connected to the input end of the corresponding pressurized air pump (280); the input end of the output pipe (252) of each of the ejection pipes (250) is connected to the output end of the corresponding pressurized air pump (280); and the output end of the output pipe (252) of each of the ejection pipes (250) is connected to the corresponding switch valve (260).

5. The fireproof lithium battery module according to claim 4, characterized in that: The input pipe (251) is a soft structure.

6. The fireproof lithium battery module according to claim 4, characterized in that: The output pipe (252) is a flexible structure.

7. The fireproof lithium battery module according to claim 1, characterized in that: The switch valve (260) is a solenoid valve.

8. The fireproof lithium battery module according to claim 1, characterized in that: The delivery pipe (220) comprises a plurality of pipe bodies which are connected in sequence.

9. The fireproof lithium battery module according to claim 8, characterized in that: The tube body is of PVC structure.

10. A battery device, characterized in that: A fireproof lithium battery module comprising any one of claims 1 to 9.

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