Flame resistant structure for energy storage battery compartment

Abstract

The application discloses a fireproof structure of an energy storage battery compartment, which comprises a battery compartment element containing a battery pack inside, and a compartment door arranged at an opening end of the battery compartment element; one end of the battery compartment element opposite to the compartment door is provided with a heat dissipation opening for heat dissipation; the fireproof structure further comprises a closing unit, which comprises a closing assembly arranged on an inner wall of the battery compartment element and used for closing the heat dissipation opening and cutting off oxygen, and a driving assembly arranged on one side of the closing assembly and used for driving the closing assembly to adjust the position; and the fireproof structure further comprises a fireproof unit arranged on one side of the battery compartment element and used for sending fireproof gas into the battery compartment element when the closing assembly closes the heat dissipation opening, so that the inside of the battery compartment element is cut off from the outside in oxygen, and the combustion condition of the battery pack is hindered; meanwhile, the closing assembly drives the fireproof unit to inject the fireproof gas into the battery compartment element, so that the combustion of the battery pack is further hindered, and the fireproof effect is good.

Description

Technical Field

[0001] This invention relates to the field of flame-retardant technology for battery compartments, specifically to the flame-retardant structure of energy storage battery compartments. Background Technology

[0002] With the rapid development of new energy technologies, energy storage battery systems, as the core components of energy storage and conversion, are widely used in electric vehicles, energy storage power stations, portable electronic devices and other fields. However, lithium batteries are at risk of spontaneous combustion or even explosion during charging and discharging due to thermal runaway, short circuits, overcharging and other reasons, which pose a serious challenge to safety.

[0003] Traditional battery compartment designs often focus on heat dissipation to improve battery pack performance and lifespan, but they struggle to address effective fire prevention, especially in the early stages of battery spontaneous combustion. Because the battery compartment needs to maintain a certain level of ventilation for heat dissipation, external oxygen can easily enter, exacerbating the spread of the fire.

[0004] Therefore, developing a battery compartment structure that can both ensure normal heat dissipation of the battery pack and quickly block oxygen and implement flame retardancy in emergency situations has become the key to improving the safety of battery systems.

[0005] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0006] The purpose of this invention is to provide a flame-retardant structure for an energy storage battery compartment, in order to solve the problem mentioned in the background art that, in the early stages of battery spontaneous combustion, the battery compartment needs to maintain a certain level of ventilation for heat dissipation, which allows external oxygen to easily enter and exacerbates the spread of the fire.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The flame-retardant structure of the energy storage battery compartment includes a battery compartment component that internally houses a battery pack. The battery compartment component has a door at its open end and a heat dissipation vent at one end opposite the door. The structure also includes:

[0009] The sealing unit includes a sealing component disposed on the inner wall of the battery compartment for sealing and isolating the heat dissipation vents, and a drive component disposed on one side of the sealing component for adjusting the position of the sealing component.

[0010] The flame-retardant unit is located inside the battery compartment on one side and is used to deliver flame-retardant gas into the battery compartment while the heat dissipation vents are sealed by the sealing assembly.

[0011] Furthermore, the enclosed component includes:

[0012] A guide plate is fixedly connected to the inner wall of the battery compartment component, and a first guide groove is provided inside the guide plate;

[0013] The rack is slidably inserted into the first guide groove;

[0014] The telescopic plate is slidably inserted into the guide plate, and one side of the rack is fixedly connected to the telescopic plate;

[0015] The push rod is provided in two sets, which are fixedly connected to the upper and lower ends of the telescopic plate and located on the outside of the guide plate respectively;

[0016] The first piston is fixedly connected to one end of the push rod relative to the telescopic plate and is used to adjust the airflow state inside the flame-retardant unit.

[0017] A limiting plate is fixedly connected to one end inside the battery compartment and corresponds to the guide plate, and is used to limit the guide plate.

[0018] Furthermore, the driving component includes:

[0019] A drive motor is installed on the inner wall of the battery compartment and located above the guide plate;

[0020] A drive shaft is connected to the drive end of the drive motor;

[0021] The gear is fixedly sleeved on the outside of the drive shaft and meshes with the rack to drive the rack to move.

[0022] Furthermore, the flame-retardant unit includes:

[0023] The conduit is fixedly connected to the inner wall of the battery compartment and is located on the side of the limiting plate opposite to the guide plate;

[0024] A storage cylinder is located on one side of the guide plate of the conduit. The first piston is slidably inserted into the inside of the storage cylinder. The storage cylinder communicates with the inside of the conduit, and both contain flame-retardant gas.

[0025] The first delivery tube is connected to one side of the upper part of the conduit and communicates with the inside of the conduit;

[0026] The second delivery pipe is connected to one side of the first delivery pipe. The extension direction of the second delivery pipe is parallel to the extension direction of the battery compartment component. The lower end of the second delivery pipe is provided with a nozzle for discharging flame-retardant gas.

[0027] The gas-blocking mechanism, located inside the first delivery pipe, is used to seal the flame-retardant gas inside the storage cylinder and the conduit.

[0028] Furthermore, the gas-blocking mechanism includes:

[0029] The second guide groove is located inside the air blocking mechanism, and the air blocking mechanism has a first air outlet connected to the second guide groove on one side of the guide tube.

[0030] The second piston is slidably inserted into the second guide groove, and a guide rod is fixedly connected to one end of the second piston relative to the first air outlet.

[0031] A clamping spring is sleeved on the outside of the guide rod and located inside the second guide groove, used to clamp the second piston.

[0032] The second air outlet is located inside the air-blocking mechanism and at the lower part of the second guide groove. The second air outlet is offset from the second piston.

[0033] Furthermore, the storage cylinder is provided in two sets, which are respectively connected to one side of the upper and lower parts of the conduit and correspond one-to-one with the first piston, in order to increase the storage capacity of the flame-retardant gas.

[0034] Furthermore, the nozzle is positioned at the lower end of the second delivery pipe, away from the first delivery pipe.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] 1. This invention activates a drive component, which in turn drives a sealing component to seal the previously open heat dissipation vent, thus isolating the inside of the battery compartment from the outside oxygen and hindering the combustion conditions of the battery pack. At the same time, the sealing component drives a flame-retardant unit to inject flame-retardant gas into the battery compartment, further hindering the combustion of the battery pack, resulting in a good flame-retardant effect. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the internal structure of the battery compartment component of the present invention;

[0039] Figure 3 This is a diagram showing the cooperation relationship between the sealing unit and the flame-retardant unit of the present invention;

[0040] Figure 4 This is a schematic diagram of the closed component structure of the present invention;

[0041] Figure 5 This is a schematic diagram of the internal structure of the air-blocking mechanism of the present invention;

[0042] Figure 6 For the present invention in Figure 5 Enlarged view of point A in the middle.

[0043] Reference numerals: 100, Battery compartment component; 101, Heat dissipation vent; 102, Battery pack; 103, Compartment door; 1, Sealing unit; 11, Sealing assembly; 111, Guide plate; 1111, First guide groove; 112, Rack; 113, Telescopic plate; 114, Push rod; 115, First piston; 116, Limiting plate; 12, Drive assembly; 121, Drive motor; 122, Drive shaft; 123, Gear; 2, Flame retardant unit; 21, Storage cylinder; 22, Conduit; 23, First delivery pipe; 24, Second delivery pipe; 25, Nozzle; 26, Gas blocking mechanism; 261, Second guide groove; 2611, First air outlet; 2612, Second air outlet; 262, Second piston; 263, Guide rod; 264, Tensioning spring. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figure 1-6 The present invention provides a technical solution:

[0046] The flame-retardant structure of the energy storage battery compartment includes a battery compartment component 100 that internally houses a battery pack 102. The battery compartment component 100 has a door 103 at its open end, and a heat dissipation vent 101 for heat dissipation at one end of the battery compartment component 100 opposite the door 103. It also includes:

[0047] The sealing unit 1 includes a sealing component 11 disposed on the inner wall of the battery compartment 100 for sealing and isolating the heat dissipation port 101, and a drive component 12 disposed on one side of the sealing component 11 for adjusting the position of the sealing component 11.

[0048] The flame-retardant unit 2 is located inside the battery compartment 100 on one side, and is used to deliver flame-retardant gas into the battery compartment 100 in a burning state while the sealing assembly 11 seals the heat dissipation port 101.

[0049] It should be added that the flame-retardant gas in this invention can be replaced with carbon dioxide.

[0050] It should be noted that when the battery pack 102 inside the battery compartment 100 spontaneously combusts, the drive component 12 is activated. The drive component 12 drives the sealing component 11 to seal the heat dissipation vent 101, which was originally open. This isolates the interior of the battery compartment 100 from the outside oxygen, thus hindering the combustion conditions of the battery pack 102. At the same time, the sealing component 11 drives the flame-retardant unit 2 to inject flame-retardant gas into the battery compartment 100, further hindering the combustion of the battery pack 102. The flame-retardant effect is good.

[0051] As an improvement, such as Figure 2-4 As shown, the enclosure component 11 includes:

[0052] A guide plate 111 is fixedly connected to the inner wall of the battery compartment 100, and a first guide groove 1111 is provided inside the guide plate 111;

[0053] The rack 112 is slidably inserted into the first guide groove 1111;

[0054] The telescopic plate 113 is slidably inserted into the guide plate 111, and one side of the rack 112 is fixedly connected to the telescopic plate 113.

[0055] The push rod 114 is provided in two sets, which are respectively fixedly connected to the upper and lower ends of the telescopic plate 113 and located on the outside of the guide plate 111;

[0056] The first piston 115 is fixedly connected to one end of the push rod 114 relative to the telescopic plate 113, and is used to adjust the airflow state inside the flame-retardant unit 2.

[0057] The limiting plate 116 is fixedly connected to one end inside the battery compartment 100 and corresponds to the guide plate 111, and is used to limit the guide plate 111.

[0058] Furthermore, the driving component 12 includes:

[0059] A drive motor 121 is installed on the inner wall of the battery compartment 100 and located above the guide plate 111;

[0060] The drive shaft 122 is connected to the drive end of the drive motor 121;

[0061] Gear 123 is fixedly sleeved on the outside of the drive shaft 122 and meshes with the rack 112, and is used to drive the rack 112 to move.

[0062] Furthermore, such as Figure 4-6 As shown, the flame-retardant unit 2 includes:

[0063] The conduit 22 is fixedly connected to the inner wall of the battery compartment 100 and is located on the side of the limiting plate 116 opposite to the guide plate 111;

[0064] Storage cylinder 21 is located on one side of guide plate 111 of conduit 22. The first piston 115 is slidably inserted into the inside of storage cylinder 21. Storage cylinder 21 and conduit 22 are connected inside and both contain flame-retardant gas.

[0065] The first delivery pipe 23 is connected to one side of the upper part of the conduit 22 and communicates with the inside of the conduit 22;

[0066] The second delivery pipe 24 is connected to one side of the first delivery pipe 23. The extension direction of the second delivery pipe 24 is parallel to the extension direction of the battery compartment 100. The lower end of the second delivery pipe 24 is provided with a nozzle 25 for discharging flame-retardant gas.

[0067] The gas-blocking mechanism 26 is located inside the first delivery pipe 23 and is used to seal the gas-blocking gas in the storage cylinder 21 and the conduit 22.

[0068] Among them, such as Figure 5-6 As shown, the air-blocking mechanism 26 includes:

[0069] The second guide groove 261 is located inside the air blocking mechanism 26. The air blocking mechanism 26 has a first air outlet 2611 connected to the second guide groove 261 on one side of the guide tube 22.

[0070] The second piston 262 is slidably inserted into the second guide groove 261, and a guide rod 263 is fixedly connected to one end of the second piston 262 relative to the first air outlet 2611.

[0071] A tensioning spring 264 is sleeved on the outside of the guide rod 263 and located inside the second guide groove 261, and is used to press against the second piston 262.

[0072] The second air outlet 2612 is located inside the air blocking mechanism 26 and at the lower part of the second guide groove 261. The second air outlet 2612 is offset from the second piston 262.

[0073] In addition, the storage cylinder 21 is provided in two sets, which are respectively connected to one side of the upper and lower parts of the conduit 22 and correspond one-to-one with the first piston 115, in order to increase the storage capacity of the flame-retardant gas.

[0074] As an improvement, such as Figure 2 As shown, the nozzle 25 is located at the lower end of the second delivery pipe 24, away from the first delivery pipe 23.

[0075] It should be noted that: in the specific implementation process of this invention, such as Figure 2-4As shown, initially, the heat dissipation vent 101 is in the open state. When the battery pack 102 inside the battery compartment 100 spontaneously combusts, the drive motor 121 is started. The drive motor 121 drives the gear 123 to rotate through the drive shaft 122. The gear 123 drives the telescopic plate 113 to move along the guide plate 111 to contact the limiting plate 116 through the rack 112, so that the heat dissipation vent 101 is closed by the telescopic plate 113, ensuring that the oxygen inside the battery compartment 100 is blocked, thus preventing the battery pack 102 inside the battery compartment 100 from burning.

[0076] like Figure 4-6 As shown, while the telescopic plate 113 moves along the guide plate 111, the telescopic plate 113 drives the first piston 115 to move along the inside of the storage cylinder 21 via the push rod 114. This causes the flame-retardant gas in the storage cylinder 21 to be pressurized and enter the first delivery pipe 23 through the conduit 22. The gas in the first delivery pipe 23 pushes the second piston 262 along the second guide groove 261 to directly above the second outlet 2612 through the first outlet 2611. During this process, the pressing spring 264 is compressed. The flame-retardant gas in the first delivery pipe 23 is sequentially delivered to the nozzle 25 through the first outlet 2611, the second guide groove 261, the second outlet 2612, and the second delivery pipe 24 for discharge. This allows the flame-retardant gas to be quickly distributed inside the battery compartment 100, further improving the flame-retardant effect on the battery pack 102.

[0077] like Figure 1-2 As shown, by setting the nozzle 25 at the first delivery pipe 23, the present invention enables the flame-retardant gas to expel the oxygen originally distributed inside the battery compartment 100 before the heat dissipation vent 101 is completely closed after entering the battery compartment 100, thus ensuring that a flame-retardant environment can be quickly formed inside the battery compartment 100 and slowing down the spread of fire.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0079] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fireproof structure of an energy storage battery compartment, comprising a battery compartment member (100) in which a battery pack (102) is accommodated, an opening end of the battery compartment member (100) being provided with a compartment door (103), and an end of the battery compartment member (100) opposite to the compartment door (103) being provided with a heat dissipation opening (101) for heat dissipation, characterized in that, Also includes: The sealing unit (1) includes a sealing component (11) disposed on the inner wall of the battery compartment (100) for sealing and isolating the heat dissipation port (101) from oxygen, and a drive component (12) disposed on one side of the sealing component (11) for adjusting the position of the sealing component (11). The flame-retardant unit (2) is located inside the battery compartment (100) on one side and is used to deliver flame-retardant gas to the inside of the battery compartment (100) in a burning state while the heat dissipation port (101) is closed by the sealing component (11). The enclosure component (11) includes: A guide plate (111) is fixedly connected to the inner wall of the battery compartment (100), and a first guide groove (1111) is provided inside the guide plate (111). The rack (112) is slidably inserted into the first guide groove (1111); The telescopic plate (113) is slidably inserted into the guide plate (111), and one side of the rack (112) is fixedly connected to the telescopic plate (113); The push rod (114) is provided in two sets, which are fixedly connected to the upper and lower ends of the telescopic plate (113) and located on the outside of the guide plate (111); The first piston (115) is fixedly connected to one end of the push rod (114) relative to the telescopic plate (113) and is used to adjust the airflow state inside the flame-retardant unit (2). A limiting plate (116) is fixedly connected to one end inside the battery compartment (100) and corresponds to the guide plate (111), and is used to limit the guide plate (111).

2. The flame-retardant structure of the energy storage battery compartment according to claim 1, characterized in that: The driving component (12) includes: A drive motor (121) is installed on the inner wall of the battery compartment (100) and located above the guide plate (111); A drive shaft (122) is connected to the drive end of the drive motor (121); The gear (123) is fixedly sleeved on the outside of the drive shaft (122) and meshes with the rack (112) to drive the rack (112) to move.

3. The flame-retardant structure of the energy storage battery compartment according to claim 1, characterized in that: The flame-retardant unit (2) includes: The conduit (22) is fixedly connected to the inner wall of the battery compartment (100) and located on the side of the limiting plate (116) opposite to the guide plate (111); Storage cylinder (21) is located on one side of guide plate (111) of conduit (22). The first piston (115) is slidably inserted into the storage cylinder (21). The storage cylinder (21) and the conduit (22) are connected and both contain flame-retardant gas. The first delivery pipe (23) is connected to one side of the upper part of the conduit (22) and communicates with the inside of the conduit (22); The second delivery pipe (24) is connected to one side of the first delivery pipe (23). The extension direction of the second delivery pipe (24) is parallel to the extension direction of the battery compartment component (100). The lower end of the second delivery pipe (24) is provided with a nozzle (25) for discharging flame-retardant gas. The gas-blocking mechanism (26) is located inside the first delivery pipe (23) and is used to seal the gas-blocking gas in the storage cylinder (21) and the conduit (22).

4. The flame-retardant structure of the energy storage battery compartment according to claim 3, characterized in that: The gas-blocking mechanism (26) includes: The second guide groove (261) is located inside the air blocking mechanism (26). The air blocking mechanism (26) has a first air outlet (2611) connected to the second guide groove (261) on one side of the guide tube (22). The second piston (262) is slidably inserted into the second guide groove (261), and a guide rod (263) is fixedly connected to one end of the second piston (262) relative to the first air outlet (2611); A clamping spring (264) is sleeved on the outside of the guide rod (263) and located inside the second guide groove (261) to clamp the second piston (262); The second air outlet (2612) is located inside the air blocking mechanism (26) and below the second guide groove (261). The second air outlet (2612) is offset from the second piston (262).

5. The flame-retardant structure of the energy storage battery compartment according to claim 4, characterized in that: The storage cylinder (21) is provided in two sets, which are respectively connected to one side of the upper and lower parts of the conduit (22) and correspond one-to-one with the first piston (115) to increase the storage capacity of the flame-retardant gas.

6. The flame-retardant structure of the energy storage battery compartment according to claim 3, characterized in that: The nozzle (25) is located at the lower end of the second delivery pipe (24) away from the first delivery pipe (23).

Images