Battery module ejection device for fire protection of battery compartment of energy storage system

Abstract

The utility model discloses a battery module ejection device for fire protection of an energy storage system battery compartment, and belongs to the technical field of battery fire protection. The automatic door unit is used for blocking a battery cabin and automatically opening a cabin door when a battery module is ejected; the ejection units are mounted on the battery rack in the battery cabin, are arranged in one-to-one correspondence with the rear ends of the battery modules and are used for ejecting the battery modules along the battery rack when being triggered; the control unit is used for linking the energy storage system, the ejection unit and the automatic door unit; through the synergistic effect of the ejection unit and the automatic door unit, millisecond-level active isolation of the thermal runaway battery module is achieved, compared with a traditional scheme completely depending on passive fire extinguishing, a thermal diffusion path is thoroughly blocked from the physical space, and cascade propagation of thermal runaway energy between the modules is effectively avoided.

Description

Technical Field

[0001] This utility model relates to a battery module ejection device for fire protection in the battery compartment of an energy storage system, belonging to the field of battery fire protection technology. Background Technology

[0002] In the field of energy storage system technology, the dense arrangement of battery modules has become a key technical means to improve the energy density of the system. However, when a single battery module experiences thermal runaway, the high-temperature aerosols, combustible gases, and particulate matter it releases can easily form heat conduction paths between adjacent modules.

[0003] Existing conventional fire suppression systems for energy storage systems mostly employ passive protection measures such as gaseous fire extinguishing agent spraying or liquid cooling medium circulation. These solutions have significant technical limitations when dealing with battery module-level thermal runaway events: firstly, the extinguishing medium cannot effectively penetrate to the cell level within the battery pack for precise suppression; secondly, the system-level response mechanism has inherent delays, leading to a cascading effect of thermal runaway energy between modules. When thermal runaway is triggered in a single cell, if effective thermal interruption is not achieved in time, the heat diffusion rate will increase exponentially, potentially causing catastrophic thermal runaway of the entire battery cluster and even the energy storage compartment, seriously threatening the operational safety of the energy storage system and causing significant property damage. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model provides a battery module ejection device for fire protection in the battery compartment of an energy storage system.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a battery module ejection device for fire fighting in the battery compartment of an energy storage system, comprising...

[0006] Automatic door unit, used to seal the battery compartment and automatically open the door when the battery module is ejected;

[0007] The ejection unit is installed on the battery rack inside the battery compartment, and is set one-to-one with the rear end of the battery module. It is used to eject the battery module along the battery rack when triggered.

[0008] The control unit is used to link the energy storage system, the ejection unit, and the automatic door unit.

[0009] The ejection unit includes a compression spring, a push plate, an upper electromagnetic block, a lower electromagnetic block, and two guide rails;

[0010] The two guide rails are fixed on the corresponding inner sidewalls of the battery rack. The two sliders of the two guide rails are fixedly connected to the two ends of the push plate. An upper electromagnetic block is fixed at the lower end of the middle of the push plate. The lower end of the upper electromagnetic block is magnetically attracted to the lower electromagnetic block. The lower electromagnetic block is connected to the battery rack. A compression spring is fitted on the outer side of the upper and lower electromagnetic blocks. The upper end of the compression spring is fixedly connected to the push plate, and the lower end of the compression spring is fixedly connected to the battery rack.

[0011] Furthermore, the ejection unit also includes a spring preload adjustment mechanism, which includes a screw and a limiting nut. The limiting nut is rotatably connected to the battery holder and threaded onto the outside of the screw. The screw is fixedly connected to the lower electromagnetic block.

[0012] Furthermore, an elastic buffer block is installed at the outer end of each of the guide rails.

[0013] Furthermore, the outer surface of the push plate is covered with a high-temperature resistant insulating layer.

[0014] Furthermore, the automatic door unit includes an automatic door, a connecting shaft, and an electric push rod; the automatic door is hinged to the energy storage system cabin door via the connecting shaft, the middle part of the non-opening end of the automatic door is hinged to the movable end of the electric push rod, the fixed end of the electric push rod is hinged to the energy storage system cabin door, and the electric push rod is connected to the control unit for signal transmission.

[0015] Furthermore, an electromagnetic lock is provided between the automatic door and the energy storage system compartment door, and the electromagnetic lock is connected to the control unit for signal transmission.

[0016] Furthermore, the ejection device also includes a fire detection module, which includes a temperature sensor, a smoke sensor, a VOC gas sensor, an H2 sensor, and a CO sensor. The temperature sensor, smoke sensor, VOC gas sensor, H2 sensor, and CO sensor are all connected to the control unit for signal transmission.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model achieves millisecond-level active isolation of thermal runaway battery modules through the coordinated action of the ejection unit and the automatic door unit. Compared with the traditional passive fire extinguishing scheme, it completely blocks the heat diffusion path in physical space and effectively avoids the cascading propagation of thermal runaway energy between modules.

[0019] 2. This utility model integrates a multi-parameter fire detection module, which combines temperature, smoke, VOC gas, hydrogen and carbon monoxide concentration signals to significantly improve the accuracy of early warning of thermal runaway and shorten the system response time.

[0020] 3. This utility model adopts a mechanical structure that combines electromagnetic adsorption and spring energy storage. Under normal conditions, the module is stably installed. When triggered, the spring potential energy is released through electromagnetic de-energization, which combines operational reliability and explosive launching force.

[0021] 4. This utility model is equipped with a spring preload adjustment mechanism, which can match the best ejection parameters according to the different battery module masses. Combined with the elastic buffer design at the end of the guide rail, it ensures that the ejection process is stable and controllable.

[0022] 5. The automatic door unit of this utility model is equipped with a dual drive of electromagnetic lock and electric push rod. It maintains the airtightness of the hatch in the non-working state and simultaneously completes the opening of the window and the ejection of the module in the event of emergency ejection, forming a complete closed-loop system for handling thermal runaway. Attached Figure Description

[0023] Figure 1 This is a top view of the energy storage system that applies this utility model;

[0024] Figure 2 This is a schematic diagram of the ejection unit.

[0025] Figure 3 This is a structural diagram of an automatic door unit. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0027] A battery module ejection device for fire fighting in the battery compartment of an energy storage system, comprising:

[0028] Automatic door unit 10 is used to seal the battery compartment and automatically open the door when the battery module is ejected;

[0029] The ejection unit 20 is installed on the battery rack 4 inside the battery compartment and is set one-to-one with the rear end of the battery module. It is used to eject the battery module along the battery rack 4 when triggered.

[0030] The control unit is used to link the energy storage system, the ejection unit 20, and the automatic door unit 10; it is an outsourced component, preferably the Feiling embedded FCU2601 industrial and commercial energy storage EMS energy control unit (extended version).

[0031] The ejection unit 20 includes a compression spring 1, a push plate 2, an upper electromagnetic block 5, a lower electromagnetic block 6, and two guide rails 3.

[0032] The two guide rails 3 are fixed on the corresponding inner sidewalls of the battery rack 4. The two sliders of the two guide rails 3 are fixedly connected to the two ends of the push plate 2. The lower end of the middle part of the push plate 2 is fixed with an upper electromagnetic block 5. The lower end of the upper electromagnetic block 5 is magnetically attracted to the lower electromagnetic block 6. The lower electromagnetic block 6 is connected to the battery rack 4. A compression spring 1 is fitted on the outer side of the upper electromagnetic block 5 and the lower electromagnetic block 6. The upper end of the compression spring 1 is fixedly connected to the push plate 2. The lower end of the compression spring 1 is fixedly connected to the battery rack 4. The two guide rails 3 are used to guide the battery module to pop out in a straight line.

[0033] When the control unit detects a fire in the battery module and conventional fire suppression methods fail to extinguish the fire, the automatic door unit 10 opens the corresponding automatic door 11. After a delay of 1-2 seconds, the control unit controls the upper electromagnetic block 5 and the lower electromagnetic block 6 to disconnect from the power supply. Under the action of the compression spring 1, the battery module that is on fire is ejected from the battery rack 4 to prevent heat spread. The ejected battery module can be manually extinguished from outside the cabin.

[0034] Furthermore, the ejection unit 20 also includes a spring preload adjustment mechanism, which includes a screw 7 and a limiting nut 8. The limiting nut 8 is rotatably connected to the battery holder 4 via a bearing. The limiting nut 8 is threaded onto the outside of the screw 7. The inner end of the screw 7 extends into the battery holder 4 and is fixedly connected to the lower electromagnetic block 6. The initial compression of the spring 1 is adjusted by the limiting nut 8 to control the ejection force.

[0035] Furthermore, each of the guide rails 3 is equipped with an elastic buffer block 9 at its outer end. The elastic buffer block 9 is used to absorb the residual kinetic energy when the battery module is ejected, so as to avoid the battery module from excessively impacting the external structure of the cabin.

[0036] Furthermore, the outer surface of the push plate 2 is covered with a high-temperature resistant insulating layer, which is used to prevent the battery module from leaking electricity or the high temperature from damaging the push plate 2 during the ejection process.

[0037] Furthermore, the automatic door unit 10 includes an automatic door 11, a connecting shaft 14, and an electric push rod 15; the automatic door 11 is hinged to the energy storage system cabin door 13 via the connecting shaft 14, the middle part of the non-opening end of the automatic door 11 is hinged to the movable end of the electric push rod 15 via a pin, the fixed end of the electric push rod 15 is hinged to the energy storage system cabin door 13 via a pin, and the electric push rod 15 is connected to the control unit for signal transmission.

[0038] Furthermore, an electromagnetic lock 12 is provided between the automatic door 11 and the energy storage system door 13, and the electromagnetic lock 12 is connected to the control unit for signal transmission.

[0039] The control unit controls the electric push rod 15 to drive the hatch to flip, and at the same time controls the electromagnetic lock 12 to unlock / lock the automatic door 11.

[0040] Furthermore, the ejection device also includes a fire detection module, which includes a temperature sensor, a smoke sensor, a VOC gas sensor, an H2 sensor, and a CO sensor. The temperature sensor, smoke sensor, VOC gas sensor, H2 sensor, and CO sensor are all connected to the control unit for signal transmission. The control unit determines whether to trigger the automatic door opening and ejection action based on the fusion of data from multiple sensors.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy storage system battery compartment fire battery module ejection device, characterized by: include Automatic door unit (10) is used to seal the battery compartment and automatically open the door when the battery module is ejected; The ejection unit (20) is installed on the battery rack (4) inside the battery compartment and is set one-to-one with the rear end of the battery module. It is used to eject the battery module along the battery rack (4) when triggered. Control unit, used to link energy storage system, ejection unit (20) and automatic door unit (10); The ejection unit (20) includes a compression spring (1), a push plate (2), an upper electromagnetic block (5), a lower electromagnetic block (6), and two guide rails (3); The two guide rails (3) are fixed on the opposite inner sidewalls of the battery rack (4). The two sliders of the two guide rails (3) are fixedly connected to the two ends of the push plate (2). An upper electromagnetic block (5) is fixed at the lower end of the middle part of the push plate (2). The lower end of the upper electromagnetic block (5) is magnetically attracted to the lower electromagnetic block (6). The lower electromagnetic block (6) is connected to the battery rack (4). A compression spring (1) is fitted on the outer side of the upper electromagnetic block (5) and the lower electromagnetic block (6). The upper end of the compression spring (1) is fixedly connected to the push plate (2), and the lower end of the compression spring (1) is fixedly connected to the battery rack (4).

2. An energy storage system battery compartment fire battery module ejection device according to claim 1, wherein: The ejection unit (20) also includes a spring preload adjustment mechanism, which includes a screw (7) and a limiting nut (8). The limiting nut (8) is rotatably connected to the battery holder (4). The limiting nut (8) is threaded onto the outside of the screw (7). The screw (7) is fixedly connected to the lower electromagnetic block (6).

3. An energy storage system battery compartment fire battery module ejection device according to claim 2, wherein: Each of the guide rails (3) is fitted with an elastic buffer block (9) at its outer end.

4. An energy storage system battery compartment fire battery module ejection device according to claim 3, wherein: The outer surface of the push plate (2) is covered with a high-temperature resistant insulating layer.

5. An energy storage system battery compartment fire battery module ejection device according to claim 1 or 4, wherein: The automatic door unit (10) includes an automatic door (11), a connecting shaft (14), and an electric push rod (15); the automatic door (11) is hinged to the energy storage system door (13) via the connecting shaft (14), the middle part of the non-opening end of the automatic door (11) is hinged to the movable end of the electric push rod (15), the fixed end of the electric push rod (15) is hinged to the energy storage system door (13), and the electric push rod (15) is connected to the control unit for signal transmission.

6. An energy storage system battery compartment fire battery module ejection device according to claim 5, wherein: An electromagnetic lock (12) is also provided between the automatic door (11) and the energy storage system door (13), and the electromagnetic lock (12) is connected to the control unit for signal transmission.

7. An energy storage system battery compartment fire battery module ejection device according to claim 6, wherein: The ejection device also includes a fire detection module, which includes a temperature sensor, a smoke sensor, a VOC gas sensor, an H2 sensor, and a CO sensor. The temperature sensor, smoke sensor, VOC gas sensor, H2 sensor, and CO sensor are all connected to the control unit for signal transmission.

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