Energy storage battery Pack case structure with fire-fighting function

Abstract

The utility model relates to an energy storage battery Pack case structure with a fire-fighting function. The energy storage battery Pack case structure comprises a case body, a battery cell module, a fire-fighting system and a cover plate, the battery cell module and the fire extinguishing system are arranged in the box body, and the cover plate covers the top of the box body; the fire fighting system comprises a fire fighting module and a temperature sensing connecting piece, the fire fighting module is fixed on one side of the battery cell module through a fastener, and the fastener is fixed at the bottom of the box body; a first gap is formed between the fire-fighting module and the box body; the temperature sensing connecting piece is arranged around the battery cell module, and at least one end of the temperature sensing connecting piece is communicated with the interior of the fire-fighting module; and a fire extinguishing agent is arranged in the fire fighting module. The device is simple in structure, capable of achieving timeliness of minimum module unit fire extinguishing and reducing fire loss to the maximum extent, convenient to install, good in stability, economical and practical.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a battery pack chassis structure with fire protection function. Background Technology

[0002] With the deepening development of new energy industries such as energy storage, photovoltaics, and wind power, various new energy sources are integrating to form complementary energy stations. Complementary energy stations generally include wind power-storage power stations, photovoltaic power-storage power stations, and wind-solar-storage power stations. Energy storage batteries have advantages such as high energy density, long lifespan, high rated voltage, and strong adaptability to high and low temperatures, making them one of the most widely used batteries currently.

[0003] Although most energy storage systems are relatively stable and safe, energy storage batteries are prone to overcharging, thermal runaway, and even combustion or explosion during charging and discharging, posing significant safety hazards. Currently, most communication energy storage packs lack fire suppression modules, or individual battery packs lack such modules, making it impossible to detect even small sparks in time. Fires may only be detected by external fire suppression systems after they have spread significantly, potentially missing opportunities for early detection and extinguishing, thus reducing escape time and increasing property damage. Utility Model Content

[0004] The purpose of this utility model is to provide a battery pack chassis structure with fire protection function to solve the technical problems of existing battery packs, such as overcharging, thermal runaway leading to combustion or even explosion during charging and discharging, and the inability to detect the existence of tiny sparks in time.

[0005] To achieve the above objectives, this utility model provides a battery pack chassis structure with fire protection function, including a chassis, a cell module, a fire protection system, and a cover plate; the cell module and the fire protection system are both disposed inside the chassis, and the cover plate covers the top of the chassis;

[0006] The fire protection system includes a fire protection module and a temperature sensing connector. The fire protection module is fixed to one side of the battery cell module by fasteners, and the fasteners are fixed to the bottom of the housing. A first gap is provided between the fire protection module and the housing. The temperature sensing connector is arranged around the battery cell module, and at least one end of the temperature sensing connector is connected to the interior of the fire protection module. The fire protection module contains a fire extinguishing agent.

[0007] In a preferred embodiment, the fastener is an L-shaped fixing plate, which includes an integrally formed vertical part and a horizontal part; the vertical part is located close to the battery cell module, and the fire protection module is fixed to the vertical part; the horizontal part is fixed to the bottom of the housing.

[0008] In a preferred embodiment, the temperature-sensing connector is a thermal wire; the fire-fighting module is provided with a gas generation component, a controller and a pressure relief component, and the controller is connected to the gas generation component and the pressure relief component respectively.

[0009] In a preferred embodiment, the battery cell module includes several module units connected in series, with the top cover of each module unit facing the housing; a second gap is provided between two adjacent module units.

[0010] In a preferred embodiment, each module unit is fixed to the housing by a first fixing sleeve and a second fixing sleeve; the first fixing sleeve is fitted onto the bottom of the module unit, and the second fixing sleeve is fitted onto the top of the module unit; both the first fixing sleeve and the second fixing sleeve are adapted to fit the module unit.

[0011] In a preferred embodiment, the first fixing sleeves of two adjacent module units are arranged to abut against each other, and the second fixing sleeves of two adjacent module units are arranged to abut against each other. The second gap is formed by the abutting arrangement of the adjacent first fixing sleeves and second fixing sleeves.

[0012] In a preferred embodiment, each of the first fixing sleeves has alternating first protrusions and first grooves on its outer side surface, with the first protrusions and first grooves being equally spaced; each of the second fixing sleeves has alternating second protrusions and second grooves on its outer side surface, with the second protrusions and second grooves being equally spaced.

[0013] In a preferred embodiment, when the first fixing sleeves of two adjacent module units are abutted together, the first protrusion of one of the first fixing sleeves is engaged in the first groove of the other first fixing sleeve, and the first groove of one of the first fixing sleeves is engaged on the first protrusion of the other first fixing sleeve.

[0014] In a preferred embodiment, when the second fixing sleeves of two adjacent module units are abutted together, the second protrusion of one of the second fixing sleeves is engaged in the second groove of the other second fixing sleeve, and the second groove of one of the second fixing sleeves is engaged on the second protrusion of the other second fixing sleeve.

[0015] In a preferred embodiment, each of the second fixing sleeves has a plurality of protruding structures on the side near the housing.

[0016] The technical solution proposed in this utility model has the following beneficial effects: By installing a fire protection system inside the enclosure and surrounding the battery cell module with a temperature-sensing connection wire, the fire protection system can automatically activate and extinguish the fire promptly when the battery cell module experiences thermal runaway. The fire protection system of this application is small in size, can rapidly absorb heat, cool down, has high fire extinguishing efficiency, and good resistance to reignition. It is particularly suitable for fire extinguishing in small spaces or specific areas, enabling timely fire extinguishing with the smallest module unit and minimizing fire losses. Furthermore, the fire protection system is insulated, non-conductive, non-corrosive to equipment, safe and harmless to humans, leaves no residue after fire extinguishing, does not damage the atmospheric ozone layer, and is clean and environmentally friendly. This utility model has a simple structure, is easy to install, has good stability, and is economical and practical. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an energy storage battery pack chassis with fire-fighting function according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the internal structure of an energy storage battery pack chassis with fire-fighting function;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure of the first fixed sleeve;

[0020] Figure 4 for Figure 2 A schematic diagram of the structure of the second fixed sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] like Figures 1 to 2 As shown, this utility model embodiment provides an energy storage battery pack chassis structure with fire protection function, including a chassis 10, a cell module 20, a fire protection system 30, and a cover plate 40; the cell module 20 and the fire protection system 30 are both disposed inside the chassis 10, and the cover plate 40 covers the top of the chassis 10;

[0027] The fire protection system 30 includes a fire protection module 31 and a temperature-sensing connector 32. The fire protection module 31 is fixed to one side of the battery cell module 20 by fasteners 33, and the fasteners 33 are fixed to the bottom of the housing 10. A first gap (not shown in the figure) is provided between the fire protection module 31 and the housing 10. The temperature-sensing connector 32 is arranged around the battery cell module 20, and at least one end of the temperature-sensing connector 32 is connected to the interior of the fire protection module 31. The fire protection module 31 contains a fire extinguishing agent.

[0028] In a preferred embodiment, the fastener 33 is an L-shaped fixing plate, which includes an integrally formed vertical part 331 and a horizontal part 332; the vertical part 331 is located close to the battery cell module 20, and the fire protection module 31 is fixed on the vertical part 331; the horizontal part 332 is fixed to the bottom of the housing 10.

[0029] In a preferred embodiment, the temperature-sensing connector 32 is a thermal wire; the fire-fighting module 31 is provided with a gas generation component (not shown in the figure), a controller (not shown in the figure), and a pressure relief component (not shown in the figure), and the controller is connected to the gas generation component and the pressure relief component respectively.

[0030] When a fire occurs, the flame ignites the heat-sensitive wire, which activates the gas generation component in the fire suppression module. The gas generation component sends a signal to the controller, which then triggers the pressure relief component to release the extinguishing agent from the storage tank. As the extinguishing agent is released, the gas pressure in the storage tank also decreases, triggering the pressure relief component to accelerate the discharge of the extinguishing agent, which is then sprayed onto the fire source through nozzles to extinguish the fire.

[0031] In a preferred embodiment, the battery cell module 20 includes several module units 21 connected in series, and the top cover of each module unit 21 is disposed facing the housing 10; a second gap (not shown in the figure) is provided between two adjacent module units 21.

[0032] In a preferred embodiment, each module unit 21 is fixed inside the housing 10 by a first fixing sleeve 22 and a second fixing sleeve 23; the first fixing sleeve 22 is fitted onto the bottom of the module unit 21, and the second fixing sleeve 23 is fitted onto the top of the module unit 21; both the first fixing sleeve 22 and the second fixing sleeve 23 are adapted to fit the module unit 21. The module units 21 are generally connected in series by connecting pieces, the shape of which can be set according to actual needs, as long as it is adapted to fit the second fixing sleeve and the module unit.

[0033] In a preferred embodiment, the first fixing sleeves 22 of two adjacent module units 21 are arranged in abutment with each other, and the second fixing sleeves 23 of two adjacent module units 21 are arranged in abutment with each other. The abutment of the adjacent first fixing sleeves 22 and second fixing sleeves 23 forms the second gap. This arrangement effectively fixes the module units while saving space and improving the volumetric energy density of the battery; the second gap also facilitates heat dissipation of the module units.

[0034] In a preferred embodiment, each of the first fixing sleeves 22 is provided with alternating first protrusions 221 and first grooves 222 on its outer side surface, with the first protrusions 221 and the first grooves 222 being equally spaced; each of the second fixing sleeves 23 is provided with alternating second protrusions 231 and second grooves 232 on its outer side surface, with the second protrusions 231 and the second grooves 232 being equally spaced.

[0035] In a preferred embodiment, when the first fixing sleeves 22 of two adjacent module units 21 are abutted together, the first protrusion 221 of one of the first fixing sleeves 22 is engaged in the first groove 222 of the other first fixing sleeve 22, and the first groove 222 of one of the first fixing sleeves 22 is engaged on the first protrusion 221 of the other first fixing sleeve 22. In this way, the adjacent first fixing sleeves are fixed by the engaging and matching of the first protrusion and the first groove, which is convenient, quick, easy to assemble and disassemble, effectively saves space, and effectively improves the volumetric energy density of the battery.

[0036] In a preferred embodiment, when the second fixing sleeves 23 of two adjacent module units 21 are abutted together, the second protrusion 231 of one second fixing sleeve 23 is engaged in the second groove 232 of the other second fixing sleeve 23, and the second groove 232 of one second fixing sleeve 23 is engaged on the second protrusion 231 of the other second fixing sleeve 23. In this way, the adjacent second fixing sleeves are fixed by the engaging and matching of the second protrusion and the second groove, which is convenient, quick, easy to assemble and disassemble, effectively saves space, and effectively improves the volumetric energy density of the battery.

[0037] In a preferred embodiment, each of the second fixing sleeves 23 has multiple protruding structures 50 on its side near the housing 10. In this application, the protruding structures 50 effectively organize the connecting harnesses (such as temperature sensing wires) and connecting pieces, ensuring neatness and orderliness of each connection and preventing connection errors. Simultaneously, the protruding structures 50 act as a buffer, effectively reducing overall battery damage and protecting the battery structure in the event of an accidental drop. The structure of the protruding structures can be customized according to actual needs; it can be strip-shaped or L-shaped. Specifically, in this embodiment, the protruding structures are L-shaped.

[0038] This application utilizes a fire suppression system installed within the enclosure, with temperature-sensing connecting wires encircling the battery cell modules. When the battery cell modules experience thermal runaway, the fire suppression system automatically activates via the temperature-sensing connecting wires to extinguish the fire promptly. This fire suppression system is small in size, rapidly absorbs heat, cools and reduces temperature, has high fire extinguishing efficiency, and excellent resistance to reignition. It is particularly suitable for fire suppression in small or specific spaces, achieving timely fire suppression with the smallest module unit, minimizing fire damage. Furthermore, the fire suppression system is insulated, non-conductive, non-corrosive to equipment, safe and harmless to humans, leaves no residue after fire suppression, does not damage the atmospheric ozone layer, and is clean and environmentally friendly. This utility model has a simple structure, high space utilization, convenient installation, good stability, and is economical and practical, with broad application prospects.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An energy storage battery pack (Pack) cabinet structure with a fire fighting function, characterized in that, Including box, electric core module, fire control system and cover plate;The electric core module and the fire control system are arranged in the box, and the cover plate is covered on the top of the box; The fire control system includes a fire control module and a temperature sensing connector, the fire control module is fixed on one side of the electric core module by a fastener, and the fastener is fixed on the bottom of the box;A first gap is provided between the fire control module and the box;The temperature sensing connector is arranged around the electric core module, and at least one end of the temperature sensing connector is in communication with the inside of the fire control module;The fire control module is provided with a fire extinguishing agent.

2. The energy storage battery pack case structure with fire fighting function according to claim 1, characterized in that, The fastener is a "L" type fixing plate, which includes a vertical part and a horizontal part arranged integrally;The vertical part is arranged close to the electric core module, and the fire control module is fixed on the vertical part;The horizontal part is fixed on the bottom of the box.

3. The energy storage battery pack case structure with fire fighting function according to claim 1, characterized in that, The temperature sensing connector is a heat sensitive wire;The fire control module is provided with a gas generating assembly, a controller and a pressure relief assembly, and the controller is connected with the gas generating assembly and the pressure relief assembly respectively.

4. The energy storage battery pack case structure with fire fighting function according to claim 1, characterized in that, The electric core module includes a plurality of series connected module units, and the top cover of each module unit is arranged towards the box;A second gap is provided between adjacent two module units.

5. The energy storage battery pack cabinet structure with fire fighting function according to claim 4, characterized in that, Each module unit is fixed in the box by a first fixing sleeve and a second fixing sleeve;The first fixing sleeve is sleeved on the bottom of the module unit, and the second fixing sleeve is sleeved on the top of the module unit;The first fixing sleeve and the second fixing sleeve are matched with the module unit.

6. The energy storage battery pack cabinet structure with fire fighting function according to claim 5, characterized in that, The first fixing sleeves of adjacent two module units are abutted, and the second fixing sleeves of adjacent two module units are abutted.

7. The energy storage battery pack cabinet structure with fire fighting function according to claim 6, characterized in that, A first protrusion and a first groove are arranged on the outer side surface of each first fixing sleeve, and the first protrusion and the first groove are arranged at equal intervals;A second protrusion and a second groove are arranged on the outer side surface of each second fixing sleeve, and the second protrusion and the second groove are arranged at equal intervals.

8. The energy storage battery pack cabinet structure with fire fighting function according to claim 7, characterized in that, When the first fixing sleeves of adjacent two module units are abutted, the first protrusion of one of the first fixing sleeves is clamped in the first groove of the other first fixing sleeve, and the first groove of one of the first fixing sleeves is clamped on the first protrusion of the other first fixing sleeve. 9.The energy storage battery Pack case structure with fire-fighting function according to claim 7, characterized in that, When the second fixing sleeves of adjacent two module units are abutted, the second protrusion of one of the second fixing sleeves is clamped in the second groove of the other second fixing sleeve, and the second groove of one of the second fixing sleeves is clamped on the second protrusion of the other second fixing sleeve.

10. The energy storage battery pack cabinet structure with fire fighting function according to claim 5, characterized in that, A plurality of protruding structures are arranged on the side surface of each second fixing sleeve close to the box.

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