Energy storage battery device

Abstract

The utility model relates to the technical field of energy storage devices, in particular to an energy storage battery device which comprises a shell structure and further comprises a plurality of battery modules, a fire extinguishing structure and an electrical structure which are arranged on the shell structure. The plurality of battery modules are connected through an electrical structure, and each battery module comprises a battery bracket and a plurality of battery cells arranged on the battery bracket; module fireproof pads are arranged among the plurality of battery cells, and the outer side of the battery bracket is coated with a bracket fireproof pad; the fire extinguishing structure comprises a sensing assembly and a fire extinguishing assembly which are arranged on the shell structure, the sensing assembly extends in the arrangement direction of the battery module, and the sensing assembly is connected to the fire extinguishing assembly. The module fireproof pads arranged among the battery cells can be used for effectively insulating heat and limiting the battery cells at the same time; the support fireproof pad is used for heat insulation and protection of the corresponding battery module, the fire extinguishing assembly is started to extinguish fire in the shell structure in an extreme state, and the battery module and the fire extinguishing structure act together to ensure the safety of the energy storage battery device.

Description

Technical Field

[0001] This application relates to the field of energy storage device technology, and in particular to an energy storage battery device. Background Technology

[0002] Energy storage batteries are energy storage devices widely used in various industrial fields. They typically contain several battery modules that are electrically connected and operate simultaneously to supply power. With the continuous development of energy storage batteries, their capacity is also increasing. These high-capacity batteries contain more battery modules. If thermal runaway occurs, the corresponding battery module will decompose into a large amount of gas-liquid mixture within a short period and be ejected through its pressure relief valve. Conventional thermal runaway control schemes are insufficient to address the thermal runaway response and cannot effectively isolate the corresponding battery module. This module will rapidly heat up and expand, causing a sharp rise in the internal temperature of the battery. Other batteries will then experience thermal runaway, triggering a chain reaction that can lead to the combustion and damage of the energy storage batteries, or even a fire, resulting in poor safety. Utility Model Content

[0003] The purpose of this application is to provide an energy storage battery device that aims to improve the safety of energy storage batteries and address the problem of insufficient response to thermal runaway in large-capacity energy storage batteries.

[0004] This application provides an energy storage battery device, including a housing structure, and further including a plurality of battery modules, a fire extinguishing structure, and an electrical structure disposed on the housing structure; the plurality of battery modules are connected through the electrical structure, and each battery module includes a battery bracket and a plurality of battery cells disposed on the battery bracket; a module fireproof pad is disposed between the plurality of battery cells, and a bracket fireproof pad is disposed on the outside of the battery bracket; the fire extinguishing structure includes a sensing component and a fire extinguishing component disposed on the housing structure, the sensing component extending along the setting direction of the battery modules, and the sensing component being connected to the fire extinguishing component.

[0005] Furthermore, the sensing component includes a sensing probe and several temperature sensing lines, the several temperature sensing lines extending along one side of the battery module's setting direction, and the sensing probe and the temperature sensing lines connected to the fire extinguishing component.

[0006] Furthermore, the fire extinguishing assembly includes a fire extinguishing bracket disposed on the outer shell structure, the fire extinguishing bracket being filled with fire extinguishing agent, and the fire extinguishing bracket facing the battery module.

[0007] Furthermore, the fire extinguishing structure also includes an alarm component, which includes a base disposed on the outer shell structure and an alarm disposed on the base, the alarm being connected to a buzzer.

[0008] Furthermore, a data acquisition board is provided on one side of several of the battery cells, and the data acquisition board is connected to several bow-shaped contact pieces, which are connected to the battery cells one by one.

[0009] Furthermore, the battery bracket includes a plastic bracket and a metal end plate connected to the plastic bracket, the plastic bracket and the metal end plate surrounding each other to form a cavity for accommodating a plurality of the battery cells.

[0010] Furthermore, the outer casing structure includes a housing, a plurality of the battery modules are disposed within the housing and extend along the edge of the housing; the fire extinguishing assembly is disposed on one side of the housing.

[0011] The beneficial effects of this application are:

[0012] 1. An energy storage battery device according to this application, by setting module fireproof pads and bracket fireproof pads in the battery modules, when the cells experience thermal runaway, on the one hand, the module fireproof pads placed between the cells can effectively insulate heat and limit the cells, preventing heat spread caused by cell runaway and reducing the impact of cell expansion due to thermal runaway on other cells; the bracket fireproof pads provide heat insulation and protection for the battery modules, delaying the runaway time when the entire battery module experiences thermal runaway, and increasing the reaction time of the energy storage battery device. On the other hand, the outer shell structure is equipped with a fire extinguishing structure, which uses sensing components to sense the state of several battery modules. When a battery module runs away, it can be detected in time and transmitted to the fire extinguishing component. In extreme cases, the fire extinguishing component is activated to extinguish the fire inside the outer shell structure. The battery modules and the fire extinguishing structure work together to ensure the safety of the energy storage battery device.

[0013] 2. In an energy storage battery device of this application, the fire extinguishing structure is equipped with an alarm component. When the sensing component detects that the battery module may be out of control, the alarm component immediately reacts by emitting a buzzer to notify or take other actions. At the same time, the fire extinguishing component contains a fire extinguishing agent inside the fire extinguishing bracket. When the battery module catches fire, the fire extinguishing agent is sprayed out from the fire extinguishing bracket to absorb the heat of the battery module, which can suppress or even extinguish the open flame of the battery module, further improving the safety of the energy storage battery device.

[0014] 3. An energy storage battery device of this application provides a bow-shaped contact plate on the acquisition plate. When the battery cell is displaced, the bow-shaped contact plate provides a length buffer function, so that the bow-shaped contact plate can maintain the connection with the battery cell and increase the connection strength between the acquisition plate and the battery cell. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an energy storage battery device provided in an embodiment of this application;

[0016] Figure 2This is another structural schematic diagram of an energy storage battery device provided in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the internal structure of an energy storage battery device provided in an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the battery module structure in an embodiment of this application;

[0019] Figure 5 This is an exploded structural diagram of the battery module in an embodiment of this application;

[0020] Figure 6 yes Figure 5 A magnified view of part B in the middle section;

[0021] Figure 7 This is a schematic diagram of the structure of the acquisition plate and the bow-shaped contact piece in the embodiments of this application;

[0022] Figure 8 yes Figure 3 A magnified view of part A in the middle;

[0023] Figure 9 This is a schematic diagram of the structure of the sensing component and the fire extinguishing component in the embodiments of this application;

[0024] Figure 10 This is a schematic diagram of the structure of the alarm component in the embodiments of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Outer shell structure; 11. Box body; 111. Box cover; 2. Battery module; 21. Battery bracket; 22. Battery cell; 23. Module fireproof pad; 24. Bracket fireproof pad; 25. Data acquisition board; 251. Bow-shaped contact plate; 3. Fire extinguishing structure; 31. Sensing component; 311. Temperature sensing wire; 32. Fire extinguishing component; 321. Fire extinguishing bracket; 33. Alarm component; 331. Base; 3311. Suction cup; 332. Alarm; 333. Buzzer; 4. Electrical structure. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0030] Reference Figure 1 as well as Figure 2 This application provides an energy storage battery device, including a housing structure 1, and also including a plurality of battery modules 2, a fire extinguishing structure 3 and an electrical structure 4 disposed on the housing structure 1. The battery modules 2 are interconnected to supply power, and the fire extinguishing structure 3 is used to monitor the temperature of the battery modules 2 and extinguish the fire of the battery modules 2 in extreme temperatures.

[0031] Reference Figure 2 as well as Figure 3 Specifically, the outer casing structure 1 includes a housing 11, the interior of which is hollow to accommodate battery modules 2. A plurality of battery modules 2 are disposed within the housing 11 and extend along its edge. In this embodiment, the battery modules 2 are stacked to form three sets of battery modules 2, which are arranged along the length of the housing 11. The battery modules 2 are connected by an electrical structure 4, which includes several electrical components disposed within the housing 11 and connected to their respective battery modules 2. The housing 11 has a top cover, which is detachably connected to the housing 11 via a threaded connection. Removing the top cover allows for easy opening and closing of the housing 11, enabling the disassembly and maintenance of the battery modules 2 and the fire extinguishing structure 3 inside the housing 11, thus improving production and maintenance efficiency.

[0032] Reference Figure 4 as well as Figure 5 Taking a single battery module 2 as an example, the battery module 2 includes a battery bracket 21 and a plurality of battery cells 22 disposed on the battery bracket 21. The battery bracket 21 is used to support and accommodate the battery cells 22. The battery bracket 21 includes a plastic bracket and a metal end plate connected to the plastic bracket. The plastic bracket and the metal end plate surround to form a cavity for accommodating the plurality of battery cells 22. The plastic bracket is located at both ends of the width of the battery bracket 21, and the metal end plate is located along the length direction of the battery bracket 21. The plurality of battery cells 22 are stacked along the length direction of the plastic bracket, and the length direction of the battery cells 22 is the same as the length direction of the metal end plate.

[0033] Reference Figure 5 as well as Figure 6 To enhance safety, a module fireproof pad 23 is placed between several battery cells 22, and a bracket fireproof pad 24 is provided on the outer side of the battery bracket 21. Specifically, the module fireproof pad 23 is a ceramic fireproof pad, located between pairs of battery cells 22. One side of the module fireproof pad 23 is in contact with one of the battery cells 22, and the other side is in contact with another battery cell 22. When a battery cell 22 experiences thermal runaway, the module fireproof pad 23 insulates the battery cell 22 from heat and limits its movement, reducing the impact of the thermally runaway battery cell 22 on other battery cells 22 and increasing the reaction time. The bracket fireproof pad 24 is specifically a ceramic fireproof pad. The bracket fireproof pad 24 is wrapped and set at both ends of the battery bracket 21. When the battery cell 22 thermally runs away, the temperature at the electrical connection position of the battery cell 22 is high. By adding the bracket fireproof pad 24 at both ends of the battery bracket 21, the thermal runaway battery cell 22 can be further thermally isolated, thereby avoiding affecting other battery modules 2.

[0034] Reference Figure 5 as well as Figure 7 Meanwhile, to ensure the connection strength of the battery cells 22, a data acquisition plate 25 is provided on one side of several battery cells 22. The data acquisition plate 25 is connected to several bow-shaped contact pieces 251, each corresponding to a battery cell 22. The bow-shaped contact pieces 251 have a certain length and are curved. By connecting the bow-shaped contact pieces 251 to the battery cells 22, when a battery cell 22 expands or shifts due to shaking, the bow-shaped contact pieces 251 provide a length buffer function, allowing them to maintain their connection with the battery cell 22 and increasing the connection strength between the data acquisition plate and the battery cell 22. When a battery cell 22 experiences thermal runaway, this reduces the risk of disconnection caused by the expansion of the battery cell 22 leading to displacement of other battery cells 22, thereby quickly locating the specific position of the thermally runaway battery cell 22.

[0035] Reference Figure 8 as well as Figure 9The fire extinguishing structure 3 includes a sensing component 31, a fire extinguishing component 32, and an alarm component 33 disposed on the outer shell structure 1. Specifically, the sensing component 31 extends along the setting direction of the battery module 2 and is connected to the fire extinguishing component 32. In this embodiment, the sensing component 31 includes several sensing probes (not shown in the figure) and several temperature sensing wires 311. The sensing probes are connected to the temperature sensing wires 311. The sensing probes can specifically be temperature sensors, and are arranged around the perimeter of the housing 11 to monitor temperature changes within the housing 11. The several temperature sensing wires 311 extend along one side of the setting direction of the battery module 2 and are connected to the fire extinguishing component 32. The temperature sensing wires 311 can specifically be thermal wires, or wires connected to multiple sensors. The temperature sensing wires 311 are arranged along the length of the housing 11. When the temperature in the housing 11 rises sharply, the sensing probes and temperature sensing wires 311 can quickly detect and react to the drastic temperature change, thereby transmitting the corresponding signal to the fire extinguishing component 32.

[0036] The fire extinguishing assembly 32 includes a fire extinguishing bracket 321 disposed on the outer shell structure 1. The fire extinguishing bracket 321 is filled with fire extinguishing agent and faces the battery module 2. A temperature sensing probe and a temperature sensing wire 311 are connected to the fire extinguishing bracket 321. In this embodiment, the fire extinguishing assembly 32 is disposed on one side inside the housing 11. The fire extinguishing agent is a thermal aerosol fire extinguishing agent. When the temperature reaches a critical value, the fire extinguishing agent is sprayed out from the fire extinguishing bracket 321. It undergoes an oxidation-reduction reaction to form a large amount of agglomerated fire extinguishing aerosol, which then diffuses. The solid particles in the aerosol can absorb some of the heat released by the heat source in a short time, thereby reducing the temperature of the heat source, inhibiting combustion, or even extinguishing open flames, and increasing the reaction time.

[0037] Reference Figure 2 as well as Figure 10 The alarm component 33 includes a base 331 disposed on the outer casing structure 1 and an alarm 332 disposed on the base 331. The alarm 332 is connected to a buzzer 333. The base 331 is provided with a suction cup 3311. The base 331 is located inside the housing 11, and the suction cup 3311 is located outside the housing 11. The base 331 and the suction cup 3311 are clamped together with the housing 111 for fixation. In this embodiment, the base 331 and the suction cup 3311 are clamped to the cover 111, allowing for convenient maintenance of the alarm component 33 when the cover 111 is removed. The alarm 332 is located on the outward-facing side of the cover 111, and the buzzer 333 is located in the center of the alarm 332. When the alarm component 33 is triggered, the alarm 332 can send a signal or emit a vibration, and the buzzer 333 emits an alarm sound for rapid alert and response.

[0038] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. An energy storage battery device, comprising a housing structure (1), characterized in that, It also includes a plurality of battery modules (2), a fire extinguishing structure (3), and an electrical structure (4) disposed on the outer shell structure (1); the plurality of battery modules (2) are connected through the electrical structure (4), the battery module (2) includes a battery bracket (21) and a plurality of battery cells (22) disposed on the battery bracket (21); a module fireproof pad (23) is disposed between the plurality of battery cells (22), and a bracket fireproof pad (24) is disposed on the outside of the battery bracket (21); the fire extinguishing structure (3) includes a sensing component (31) and a fire extinguishing component (32) disposed on the outer shell structure (1), the sensing component (31) extends along the setting direction of the battery module (2), and the sensing component (31) is connected to the fire extinguishing component (32).

2. The energy storage battery device according to claim 1, characterized in that, The sensing component (31) includes a sensing probe and a plurality of temperature sensing lines (311), which extend along one side of the battery module (2) setting direction. The sensing probe and the temperature sensing lines (311) are connected to the fire extinguishing component (32).

3. The energy storage battery device according to claim 2, characterized in that, The fire extinguishing assembly (32) includes a fire extinguishing bracket (321) disposed on the outer shell structure (1), the fire extinguishing bracket (321) being filled with fire extinguishing agent, and the fire extinguishing bracket (321) facing the battery module (2).

4. The energy storage battery device according to claim 1, characterized in that, The fire extinguishing structure (3) also includes an alarm component (33), which includes a base (331) disposed on the outer shell structure (1) and an alarm (332) disposed on the base (331), and the alarm (332) is connected to a buzzer (333).

5. An energy storage battery device according to any one of claims 1-4, characterized in that, A data acquisition board (25) is provided on one side of several of the battery cells (22), and several bow-shaped contact pieces (251) are connected to the data acquisition board (25). The bow-shaped contact pieces (251) are connected to the several battery cells (22) one by one.

6. An energy storage battery device according to any one of claims 1-4, characterized in that, The battery bracket (21) includes a plastic bracket and a metal end plate connected to the plastic bracket. The plastic bracket and the metal end plate surround each other to form a cavity for accommodating a plurality of the battery cells (22).

7. An energy storage battery device according to any one of claims 1-4, characterized in that, The outer shell structure (1) includes a box (11), a plurality of battery modules (2) are disposed inside the box (11) and extend along the edge direction of the box (11); the fire extinguishing component (32) is disposed on one side inside the box (11).

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