Flame-retardant structure of energy storage battery compartment

Abstract

The flame-retardant structure comprises a battery compartment piece containing a battery pack inside, a compartment door is arranged at the opening end of the battery compartment piece, a heat dissipation opening used for heat dissipation is formed in the end, opposite to the compartment door, of the battery compartment piece, and the flame-retardant structure further comprises a sealing unit and a flame-retardant unit, comprising a sealing assembly arranged on the inner wall of the battery compartment part and used for sealing and insulating a heat dissipation opening, and a driving assembly arranged on one side of the sealing assembly and used for driving the sealing assembly to adjust the position; and the flame-retardant unit is arranged on one side of the interior of the battery compartment piece and is used for conveying flame-retardant gas into the battery compartment piece in a combustion state while the sealing assembly seals the heat dissipation opening. The sealing assembly is driven by the driving assembly to seal the heat dissipation opening which is originally in an open state, oxygen isolation is conducted on the interior and the exterior of the battery bin piece, the combustion condition of the battery pack is hindered, meanwhile, the sealing assembly drives the flame-retardant unit to inject flame-retardant gas into the battery bin piece, combustion of the battery pack is further hindered, and the flame-retardant effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of battery compartment flame retardancy, and in particular to a flame retardancy structure of an energy storage battery compartment. Background Art

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

[0003] Traditional battery compartment designs often focus on heat dissipation to improve the performance and service life of the battery pack, but it is difficult to take into account effective fire prevention and control. Especially in the early stage of battery spontaneous combustion, since the battery compartment needs to maintain a certain ventilation to dissipate heat, it is easy for external oxygen to enter, exacerbating the spread of the fire.

[0004] Therefore, developing a battery compartment structure that can not only ensure normal heat dissipation of the battery pack, but also quickly block oxygen and implement flame retardancy in an emergency situation has become the key to improving the safety of the battery system.

[0005] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0006] The purpose of the present invention is to provide a flame retardant structure for an energy storage battery compartment to solve the problem of battery spontaneous combustion in the early stage mentioned in the background technology. Since the battery compartment needs to maintain a certain ventilation to dissipate heat, external oxygen can easily enter, exacerbating the spread of fire.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The flame retardant structure of the energy storage battery compartment comprises a battery compartment containing a battery pack, a compartment door is provided at the open end of the battery compartment, a heat dissipation port is provided at one end of the battery compartment opposite to the compartment door, and further comprises:

[0009] The sealing unit includes a sealing component provided on the inner wall of the battery compartment for sealing and isolating the heat dissipation opening, and a driving component provided on one side of the sealing component for driving the sealing component to adjust its position;

[0010] The flame retardant unit is arranged on one side of the battery compartment and is used to transport flame retardant gas into the battery compartment in a burning state while the sealing component seals the heat dissipation port.

[0011] Furthermore, the closure assembly comprises:

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

[0013] A rack, slidably inserted in the first guide groove;

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

[0015] There are two sets of push rods, which are respectively fixedly connected to the upper and lower ends of the telescopic plate and located on the outside of the guide plate;

[0016] A first piston, fixedly connected to one end of the push rod relative to the telescopic plate, for adjusting the airflow state inside the flame retardant unit;

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

[0018] Furthermore, the driving component comprises:

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

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

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

[0022] Furthermore, the flame retardant unit comprises:

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

[0024] A storage cylinder is arranged on one side of the guide plate of the conduit, the first piston is slidably inserted in the storage cylinder, the storage cylinder is communicated with the inside of the conduit and both contain flame-retardant gas;

[0025] A first delivery pipe connected to one side of the upper portion of the conduit and communicating with the interior of the conduit;

[0026] A 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, and the lower end of the second delivery pipe is provided with a nozzle for discharging the flame-retardant gas;

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

[0028] Further, the air blocking mechanism comprises:

[0029] A second guide groove is provided inside the air blocking mechanism, and a first air outlet connected to the second guide groove is provided on one side of the conduit inside the air blocking mechanism;

[0030] A second piston is slidably inserted in the second guide groove, and one end of the second piston opposite to the first air outlet is fixedly connected to a guide rod;

[0031] A tightening spring, sleeved on the outside of the guide rod and located inside the second guide groove, for tightening the second piston;

[0032] The second air outlet is arranged inside the air blocking mechanism and located at the lower part of the second guide groove, and the second air outlet is staggered with the second piston.

[0033] Furthermore, the storage cylinders are provided with two groups, which are respectively connected to one side of the upper and lower parts of the conduit and correspond to the first pistons one by one, so as to increase the storage capacity of the flame-retardant gas.

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

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention starts the driving component, which drives the sealing component to seal the heat dissipation port that was originally in an open state, so that the oxygen inside the battery compartment is isolated from the outside, which hinders the combustion conditions of the battery pack. At the same time, the sealing component drives the flame retardant unit to inject flame retardant gas into the battery compartment, which further hinders the combustion of the battery pack and has a good flame retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It 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 of the present invention;

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

[0040] Figure 4 It is a schematic diagram of the structure of the closure assembly of the present invention;

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

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

[0043] : Figure numerals: 100, battery compartment; 101, heat dissipation port; 102, battery pack; 103, compartment door; 1, closing unit; 11, closing assembly; 111, guide plate; 1111, first guide groove; 112, rack; 113, telescopic plate; 114, push rod; 115, first piston; 116, limit plate; 12, driving assembly; 121, driving motor; 122, driving shaft; 123, gear; 2, flame retardant unit; 21, storage cylinder; 22, conduit; 23, first delivery pipe; 24, second delivery pipe; 25, nozzle; 26, air blocking mechanism; 261, second guide groove; 2611, first air outlet; 2612, second air outlet; 262, second piston; 263, guide rod; 264, tightening spring. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also 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 100 containing a battery pack 102, a compartment door 103 is provided at the open end of the battery compartment 100, and a heat dissipation port 101 for heat dissipation is provided at one end of the battery compartment 100 opposite to the compartment door 103, and further includes:

[0047] The sealing unit 1 comprises 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 driving component 12 disposed on one side of the sealing component 11 for driving the sealing component 11 to adjust its position;

[0048] The flame retardant unit 2 is disposed on one side of the battery compartment 100 and is used to transport flame retardant gas into the battery compartment 100 in a burning state while the sealing component 11 seals the heat dissipation port 101 .

[0049] It should be added that the flame retardant gas in the present invention can be replaced by carbon dioxide.

[0050] It should be noted that: when the battery pack 102 inside the battery compartment 100 spontaneously ignites, the driving component 12 is started, and the driving component 12 drives the sealing component 11 to seal the heat dissipation port 101 that was originally in an open state, so that the inside of the battery compartment 100 is isolated from the oxygen outside, 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, and having a good flame retardant effect.

[0051] As an improvement, Figure 2-4 As shown, the closure assembly 11 comprises:

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

[0053] The rack 112 is slidably inserted in 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] There are two sets of push rods 114, which are respectively fixedly connected to the upper and lower ends of the telescopic plate 113 and are located outside the guide plate 111;

[0056] A first piston 115 is fixedly connected to one end of the push rod 114 opposite 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 of the battery compartment 100 and corresponds to the guide plate 111 , and is used to limit the guide plate 111 .

[0058] Furthermore, the driving assembly 12 includes:

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

[0060] A driving shaft 122 connected to a driving end of the driving motor 121;

[0061] The gear 123 is fixedly sleeved on the outside of the driving shaft 122 and meshes with the rack 112 to drive the rack 112 to move.

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

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

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

[0065] A first delivery pipe 23 connected to one side of the upper portion of the conduit 22 and communicating with the interior of the conduit 22;

[0066] A 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 the flame-retardant gas.

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

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

[0069] The second guide groove 261 is provided inside the air blocking mechanism 26. A first air outlet 2611 connected to the second guide groove 261 is provided inside the air blocking mechanism 26 on one side of the conduit 22.

[0070] A second piston 262 is slidably inserted in the second guide groove 261, and one end of the second piston 262 opposite to the first air outlet 2611 is fixedly connected to a guide rod 263;

[0071] A tightening spring 264 is sleeved on the outside of the guide rod 263 and located inside the second guide groove 261, and is used to tighten the second piston 262;

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

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

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

[0075] It should be noted that: in the specific implementation process of the present invention, Figure 2-4As shown, initially, the heat dissipation port 101 is in an open state. When the battery pack 102 inside the battery compartment 100 spontaneously ignites, the drive motor 121 is started, and 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 limit plate 116 through the rack 112, so that the heat dissipation port 101 is closed by the telescopic plate 113, ensuring that the oxygen inside the battery compartment 100 is blocked, thereby preventing the battery pack 102 inside the battery compartment 100 from burning;

[0076] like Figure 4-6 As shown, in addition, while the telescopic plate 113 moves along the guide plate 111, the telescopic plate 113 drives the first piston 115 to move along the storage cylinder 21 through the push rod 114, so that the flame-retardant gas in the storage cylinder 21 is pressurized and enters the first delivery pipe 23 through the conduit 22, and the gas in the first delivery pipe 23 pushes the second piston 262 along the second guide groove 261 to just above the second gas outlet 2612 through the first gas outlet 2611. In this process, the tightening spring 264 is compressed, and the flame-retardant gas in the first delivery pipe 23 is transported to the nozzle 25 through the first gas outlet 2611, the second guide groove 261, the second gas outlet 2612, and the second delivery pipe 24 in turn for discharge, so that the flame-retardant gas can be quickly distributed to the inside of the battery compartment 100, further improving the flame retardant effect of the battery pack 102;

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

[0078] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims

1. A flame retardant structure of an energy storage battery compartment, comprising a battery compartment (100) containing a battery pack (102) therein, wherein an opening end of the battery compartment (100) is provided with a compartment door (103), and an end of the battery compartment (100) opposite to the compartment door (103) is provided with a heat dissipation port (101) for heat dissipation, characterized in that: Also includes: The sealing unit (1) comprises a sealing component (11) arranged on the inner wall of the battery compartment (100) for sealing the heat dissipation port (101) to isolate oxygen, and a driving component (12) arranged on one side of the sealing component (11) for driving the sealing component (11) to adjust its position; The flame retardant unit (2) is arranged on one side of the battery compartment (100) and is used to transport flame retardant gas into the battery compartment (100) in a burning state while the sealing component (11) seals the heat dissipation opening (101).

2. The flame retardant structure of the energy storage battery compartment according to claim 1 is characterized in that: The closure assembly (11) comprises: A guide plate (111) fixedly connected to the inner wall of the battery compartment (100), wherein a first guide groove (1111) is provided inside the guide plate (111); A rack (112) is slidably inserted into the first guide groove (1111); A 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); There are two groups of push rods (114), which are respectively fixedly connected to the upper and lower ends of the telescopic plate (113) and are located outside the guide plate (111); A first piston (115) is fixedly connected to one end of the push rod (114) opposite 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).

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

4. The flame retardant structure of the energy storage battery compartment according to claim 2, characterized in that: The flame retardant unit (2) comprises: A conduit (22) fixedly connected to the inner wall of the battery compartment (100) and located on a side of the limiting plate (116) opposite to the guide plate (111); The storage cylinder (21) is arranged on one side of the guide plate (111) of the guide tube (22), the first piston (115) is slidably inserted in the storage cylinder (21), the storage cylinder (21) and the guide tube (22) are in communication and both contain flame-retardant gas; A first delivery pipe (23) connected to one side of the upper portion of the conduit (22) and communicating with the interior of the conduit (22); A 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); and a nozzle (25) for discharging the flame-retardant gas is provided at the lower end of the second delivery pipe (24); The gas blocking mechanism (26) is arranged inside the first delivery pipe (23) and is used to seal the flame-retardant gas in the storage cylinder (21) and the conduit (22).

5. The flame retardant structure of the energy storage battery compartment according to claim 4, characterized in that: The air blocking mechanism (26) comprises: A second guide groove (261) is arranged inside the air blocking mechanism (26); a first air outlet (2611) connected to the second guide groove (261) is arranged inside the air blocking mechanism (26) on one side of the conduit (22); A second piston (262) is slidably inserted into the second guide groove (261), and one end of the second piston (262) opposite to the first air outlet (2611) is fixedly connected to a guide rod (263); A tightening spring (264), which is sleeved on the outside of the guide rod (263) and located inside the second guide groove (261), and is used to tighten the second piston (262); The second air outlet (2612) is arranged inside the air blocking mechanism (26) and located at the lower part of the second guide groove (261), and the second air outlet (2612) and the second piston (262) are arranged in a staggered manner.

6. The flame retardant structure of the energy storage battery compartment according to claim 5, characterized in that: The storage cylinder (21) is provided with two groups, 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), so as to increase the storage capacity of the flame-retardant gas.

7. The flame retardant structure of the energy storage battery compartment according to claim 4, characterized in that: The nozzle (25) is arranged at the lower end of the second conveying pipe (24) away from the first conveying pipe (23).

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