Energy storage battery pack with preset fire-fighting agent

Abstract

The utility model discloses an energy storage battery pack with a preset fire-fighting agent. The energy storage battery pack comprises a battery pack bottom plate, a battery pack cover, a battery cell module, a fire-fighting material body and a sealing and pressing assembly, the battery pack cover and the battery pack bottom plate are enclosed to form a closed cavity, and the battery cell module and the fire-fighting material body are arranged in the closed cavity; the sealing press-fit assembly comprises a U-shaped press-fit strip and a sealing ring piece. The battery cell module is arranged in the fire-fighting material body for operation, so that the battery cell module does not have sufficient combustion conditions, the probability of fire disasters is reduced from the source, a trigger device is not needed, the situation of loss caused by untimely fire extinguishing due to faults of an automatic fire extinguishing system is avoided, the complexity of a fire-fighting pipe network is reduced, the cost is reduced, and the fire-fighting efficiency is improved. The use space of the energy storage cabinet and the container is saved, and the advantages of simple structure and high safety are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to an energy storage battery pack pre-installed with fire-fighting agents. Background Art

[0002] During use, the energy storage battery PACK may cause thermal runaway due to overcharging, over-discharging, short circuit, high temperature, etc., which may cause safety accidents such as fire or explosion. Therefore, it is very necessary to configure fire protection measures for the energy storage battery PACK.

[0003] At present, the prevention measures taken by energy storage battery PACK mainly include installing fire alarm systems, equipping fire extinguishing equipment, setting up fire isolation belts, etc. In industrial and commercial energy storage fire protection systems, perfluorohexanone fire extinguishing devices are widely used due to their unique fire extinguishing performance and environmental protection advantages. The commonly used package-level fire extinguishing system generally directly applies perfluorohexanone to the smallest fire unit, that is, the uncontrolled battery cell, through a dedicated pipeline.

[0004] The technical problem with the above technical solution is that it needs to rely on multiple sensors configured in the automatic fire extinguishing system to monitor the temperature, smoke, carbon monoxide and other parameters of the energy storage system in real time. Once an abnormality is found, the system will immediately start the fire extinguishing procedure and extinguish the fire source through methods such as perfluorohexanone. This solution relies heavily on the monitoring of sensors and the operation of the automatic fire extinguishing system. If the sensor fails or the automatic fire extinguishing system fails, the fire will not be contained in time, causing great losses. Summary of the invention

[0005] To solve the above technical problems, the utility model provides an energy storage battery pack pre-installed with fire-fighting agents. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0006] The utility model adopts the following technical solutions:

[0007] Provided is an energy storage battery pack pre-installed with fire-fighting agents, comprising: a battery pack bottom plate, a battery pack cover, a battery cell module, a fire-fighting material body, and a sealing and pressing assembly;

[0008] The battery pack cover is arranged on the upper surface of the battery pack bottom plate, and the battery pack cover and the battery pack bottom plate are arranged to form a closed cavity, the battery cell module and the fire-fighting material body are arranged in the closed cavity, and the fire-fighting material body is arranged around the battery cell module;

[0009] The bottom end of the battery pack cover extends outward to form an installation extension platform, and a groove is provided on the upper surface of the installation extension platform; the sealing pressing assembly includes: a U-shaped pressing strip and a sealing ring sheet, the U-shaped pressing strip is arranged in the groove, the sealing ring sheet is arranged between the installation extension platform and the battery pack bottom plate, and a clamping strip is provided on the lower surface of the installation extension platform at a position corresponding to the groove, and a clamping groove adapted to the clamping strip is provided on the upper surface of the sealing ring sheet.

[0010] Furthermore, the battery pack bottom plate includes: a bottom plate frame and a liquid cooling plate; the liquid cooling plate is arranged on the upper surface of the bottom plate frame, and the battery cell module is arranged on the liquid cooling plate.

[0011] Furthermore, the battery pack cover includes: a cover body and a front panel, the cover body is provided with a through slot, and the front panel is arranged in the through slot; the bottom end of the cover body extends outward to form the installation extension platform.

[0012] Furthermore, the battery pack cover also includes: a one-way filling valve, and the one-way filling valve is arranged on the front panel.

[0013] Furthermore, the battery pack cover also includes: a safety valve, and the safety valve is arranged on the cover body.

[0014] Furthermore, the sealing ring sheet is made of rubber, and the U-shaped pressing strip is made of aluminum.

[0015] Furthermore, the energy storage battery pack pre-installed with fire-fighting agents also includes: a liquid level sensor and a sensor mounting platform, the sensor mounting platform is arranged on the front panel, and the liquid level sensor is arranged on the sensor mounting platform.

[0016] The beneficial effects brought about by the utility model: the present application forms an enclosed cavity through the battery pack bottom plate and the battery pack cover, and uses a sealing pressing assembly to ensure the sealing of the cavity, and places the battery cell module in a fire-fighting material body for operation, so that the battery cell module does not have sufficient combustion conditions, thereby reducing the probability of fire from the source, and no trigger device is required, avoiding the situation where losses caused by untimely fire extinguishing due to failure of the automatic fire extinguishing system, and reducing the complexity of the fire-fighting pipeline network, reducing costs, saving the use space of energy storage cabinets and containers, and having the advantages of simple structure and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a top view of an energy storage battery pack pre-installed with fire-fighting agents according to the utility model;

[0019] Figure 2 yes Figure 1 AA view;

[0020] Figure 3 yes Figure 2 Enlarged view of part B. DETAILED DESCRIPTION

[0021] The following is a detailed description of the embodiments of the utility model in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-3 As shown, in some illustrative embodiments, there is provided an energy storage battery pack pre-installed with fire-fighting agents, comprising: a battery pack bottom plate 1, a battery pack cover 2, a battery cell module 3, a fire-fighting material body 4 and a sealing pressing assembly 5.

[0023] The battery pack cover 2 is arranged on the upper surface of the battery pack bottom plate 1, and the battery pack cover 2 and the battery pack bottom plate 1 are arranged to form a closed cavity 6, the battery cell module 3 and the fire-fighting material body 4 are arranged in the closed cavity 6, and the fire-fighting material body 4 is arranged around the battery cell module 3. In this embodiment, the fire-fighting material body 4 is perfluorohexanone. When a thermal runaway accident occurs in the battery cell module 3 and the battery cell heats up abnormally, the fire-fighting material body 4 will absorb heat and vaporize, reducing the temperature around the battery cell. At the same time, the fire-fighting gas formed will wrap around the battery cell, isolate oxygen, and suppress the generation of flames.

[0024] The battery pack bottom plate 1 includes: a bottom plate frame 101 and a liquid cooling plate 102 .

[0025] The liquid cooling plate 102 is disposed on the upper surface of the bottom plate frame 101, and the two are connected by bolts. The battery cell module 3 is disposed on the liquid cooling plate 102, and heat is dissipated through the liquid cooling plate 102 to improve the heat dissipation effect.

[0026] The battery pack cover 2 includes: a cover body 201 , a front panel 202 , a one-way filling valve 203 , and a safety valve 204 .

[0027] The cover body 201 is fixed to the upper surface of the liquid cooling plate 102 by bolts, and the cover body 201 is integrally injection molded. A through slot is provided on the cover body 201, and the through slot is a notch on the cover body 201. The front panel 202 is arranged in the through slot, and the cover body 201 and the front panel 202 are connected by bolts. The bottom end of the cover body 201 extends outward to form an installation extension platform 7, where the outside refers to the side where the external space of the energy storage battery pack is located.

[0028] The one-way filling valve 203 is arranged on the front panel 202, the safety valve 204 is arranged on the cover body 201, and the one-way filling valve 203 and the safety valve 204 are respectively located on both sides of the battery pack cover 2 to ensure the accuracy of the pressure relief of the safety valve 204. After the battery pack is assembled, the designed amount of the fire-fighting material body 4 is injected into the closed cavity 6 through the one-way filling valve 203 on the front panel. When the fire-fighting material body 4 is vaporized in large quantities, the fire-fighting gas generated fills the entire closed cavity 6, and when the air pressure in the closed cavity 6 is higher than the set pressure, the safety valve 204 is activated to discharge the fire-fighting gas out of the battery pack.

[0029] The sealing pressing assembly 5 comprises: a U-shaped pressing strip 501 and a sealing ring 502. The sealing ring 502 is made of rubber, and the U-shaped pressing strip 501 is made of aluminum.

[0030] A groove 701 is formed on the upper surface of the installation extension platform 7, and a U-shaped pressing strip 501 is disposed in the groove 701. The bolts used to connect the battery pack bottom plate 1 and the battery pack cover 2 are located in the U-shaped groove of the U-shaped pressing strip 501. A sealing ring sheet 502 is disposed between the battery pack cover 2 and the battery pack bottom plate 1, specifically between the installation extension platform 7 and the liquid cooling plate 102, to ensure the airtightness of the sealed cavity 6.

[0031] The lower surface of the installation extension platform 7 is provided with a pressing strip 702 at a position corresponding to the groove 701, that is, the pressing strip 702 is located directly below the groove 701. The upper surface of the sealing ring sheet 502 is provided with a pressing groove 5021 adapted to the pressing strip 702. Adaptation means that the pressing strip 702 can be completely embedded in the pressing groove 5021, and the outer wall of the pressing strip 702 fits the groove wall of the pressing groove 5021. It is ensured that the closed cavity 6 has good airtightness and the use effect of the fire-fighting material body 4 is ensured.

[0032] A storage battery pack pre-installed with fire-fighting agents in this embodiment also includes: a liquid level sensor 8 and a sensor mounting platform 9, wherein the sensor mounting platform 9 is disposed on the front panel 202, and the liquid level sensor 8 is disposed on the sensor mounting platform 9 to detect the liquid level in the closed cavity 6.

[0033] The structural design of the energy storage battery pack of this embodiment uses liquid cooling to cool the battery cell module 3, and the interior of the battery pack can be made into a closed cavity 6 for storing the fire-fighting material body 4. The fire-fighting material body 4 plays a full-time protection role in the battery pack, and there is no need to wait for the response of the automatic fire extinguishing system, which can suppress the occurrence of battery pack fire from the source, and at the same time, it plays a role in protecting normal battery cells when the external fire temperature is abnormally high, ensuring the continuous and safe operation of the energy storage system.

[0034] In addition, in cabinet-level or container-level energy storage systems, there is no need to arrange the sprinklers of the automatic fire extinguishing system to connect to each battery pack, which reduces the complexity of the fire protection pipe network, reduces costs, and saves the use space of energy storage cabinets and containers.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An energy storage battery pack pre-loaded with fire-fighting agents, characterized in that: include: Battery pack bottom plate, battery pack cover, battery cell module, fire protection material body and sealing pressing assembly; The battery pack cover is arranged on the upper surface of the battery pack bottom plate, and the battery pack cover and the battery pack bottom plate are arranged to form a closed cavity, the battery cell module and the fire-fighting material body are arranged in the closed cavity, and the fire-fighting material body is arranged around the battery cell module; The bottom end of the battery pack cover extends outward to form an installation extension platform, and a groove is provided on the upper surface of the installation extension platform; the sealing pressing assembly includes: a U-shaped pressing strip and a sealing ring sheet, the U-shaped pressing strip is arranged in the groove, the sealing ring sheet is arranged between the installation extension platform and the battery pack bottom plate, and a clamping strip is provided on the lower surface of the installation extension platform at a position corresponding to the groove, and a clamping groove adapted to the clamping strip is provided on the upper surface of the sealing ring sheet.

2. The energy storage battery pack pre-filled with fire-fighting agent according to claim 1, characterized in that: The battery pack bottom plate includes: a bottom plate frame and a liquid cooling plate; the liquid cooling plate is arranged on the upper surface of the bottom plate frame, and the battery cell module is arranged on the liquid cooling plate.

3. The energy storage battery pack pre-filled with fire-fighting agent according to claim 2, characterized in that: The battery pack cover comprises: a cover body and a front panel, the cover body is provided with a through slot, and the front panel is arranged in the through slot; the bottom end of the cover body extends outward to form the installation extension platform.

4. The energy storage battery pack pre-filled with fire-fighting agent according to claim 3, characterized in that: The battery pack cover also includes a one-way filling valve, which is arranged on the front panel.

5. The energy storage battery pack pre-filled with fire-fighting agent according to claim 4, characterized in that: The battery pack cover also includes a safety valve, which is arranged on the cover body.

6. The energy storage battery pack pre-filled with fire-fighting agent according to claim 5, characterized in that: The sealing ring sheet is made of rubber, and the U-shaped pressing strip is made of aluminum.

7. The energy storage battery pack pre-filled with fire-fighting agent according to claim 6, characterized in that: Also includes: A liquid level sensor and a sensor mounting platform, wherein the sensor mounting platform is arranged on the front panel, and the liquid level sensor is arranged on the sensor mounting platform.

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