Energy storage cabinet and flue gas treatment device

Abstract

The embodiment of the utility model provides an energy storage cabinet and a flue gas treatment device, relates to the technical field of energy storage, and aims to reduce the risk of blockage of an anti-explosion valve after thermal runaway of a battery pack. The battery pack comprises a battery shell, an anti-explosion valve and a plurality of battery cells, the battery cells are located in the battery shell, and the anti-explosion valve is arranged on the battery shell. The adsorption device comprises a shell and an adsorption part used for filtering gas, the shell comprises a containing cavity, an inlet and an outlet, a first plate is arranged in the containing cavity, the containing cavity comprises a first cavity and a second cavity which are located on different sides of the first plate, the inlet is communicated with the first cavity, and the outlet is communicated with the second cavity. A plurality of first through holes are formed in the first plate and communicate with the first cavity and the second cavity. The end, away from the battery cells, of the anti-explosion valve extends into the first cavity through the inlet, and the adsorption part is contained in the second cavity. By arranging the first plate, the adsorption piece can be prevented from moving towards the anti-explosion valve to block the anti-explosion valve, and the risk that the anti-explosion valve is blocked after thermal runaway of the battery pack is reduced.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage cabinet and a flue gas treatment device. Background Technology

[0002] In the electrochemical energy storage industry, batteries (such as lithium batteries) are widely used in various fields due to their advantages such as stable performance, long lifespan, and low cost. However, batteries are prone to thermal runaway under the influence of factors such as short circuits, overcharging, over-discharging, and extreme environmental conditions. Thermal runaway of a battery generates a large amount of flammable gases (such as hydrogen, carbon monoxide, methane, etc., collectively referred to as flue gas). When these flammable gases accumulate in a confined space, there is a high risk of combustion and explosion.

[0003] Existing technologies typically employ exhaust ducts to remove flammable gases generated after battery thermal runaway. For example, in an energy storage cabinet, an exhaust duct is installed inside, containing an adsorbent pack for filtering gases. After battery thermal runaway, flammable gases can enter the exhaust duct, be filtered by the adsorbent pack, and then transported outside the cabinet, reducing the risk of gas accumulation inside. However, with this design, the adsorbent pack may shift within the exhaust duct, potentially clogging explosion-proof valves and posing a significant safety risk. Utility Model Content

[0004] This application provides an energy storage cabinet and a flue gas treatment device applied to the energy storage cabinet to reduce the risk of explosion-proof valve blockage after thermal runaway of the battery pack.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A first aspect of this application provides an energy storage cabinet comprising at least one adsorption device and at least one battery pack. The battery pack includes a battery casing, an explosion-proof valve, and multiple battery cells located within the battery casing. The explosion-proof valve is disposed on the battery casing. The adsorption device includes a housing and an adsorption element for filtering gases. The housing includes a receiving cavity, an inlet, and an outlet. A first plate is disposed within the receiving cavity, which includes a first chamber and a second chamber located on different sides of the first plate. The inlet communicates with the first chamber, and the outlet communicates with the second chamber. Multiple first through holes are formed on the first plate, connecting the first chamber and the second chamber. The end of the explosion-proof valve facing away from the multiple battery cells extends into the first chamber through the inlet, and the adsorption element is housed in the second chamber.

[0007] In the energy storage cabinet provided in this application, after the battery pack experiences thermal runaway, gases such as hydrogen, carbon monoxide, and methane (referred to as flue gas) will be generated inside the battery casing and will be ejected from the explosion-proof valve. Since the end of the explosion-proof valve facing away from multiple battery cells extends into the first chamber through the inlet, the gas ejected from the explosion-proof valve can enter the first chamber and then enter the second chamber through the first through hole on the first plate. After being adsorbed and filtered by the adsorption element in the second chamber, it will be discharged from the adsorption device through the outlet.

[0008] By setting the first plate, the adsorption component can be prevented from entering the first chamber from the second chamber, reducing the possibility of the adsorption component clogging the explosion-proof valve in the first chamber. This reduces the risk of the explosion-proof valve clogging after the battery pack thermal runaway, thereby improving the safety of the energy storage cabinet.

[0009] In some embodiments, there is a gap between the end of the adsorption element away from the plurality of battery cells and the first plate to prevent the explosion-proof valve from extending into the second chamber through the first through hole, thereby preventing the adsorption element from blocking the explosion-proof valve due to the explosion-proof valve extending into the second chamber.

[0010] In one embodiment, the adsorption device further includes a second plate disposed between the outlet and the adsorption element. The second plate has a plurality of second through holes that connect the outlet and the second chamber.

[0011] The flue gas, after being adsorbed and filtered by the adsorbent in the second chamber, can be discharged from the adsorption device through the second through hole and the outlet on one side.

[0012] By setting a second plate, the adsorbent can be prevented from moving toward the outlet, and the high-pressure gas can be prevented from being forced out of the second chamber when the explosion-proof valve of the battery pack is activated, thus ensuring the adsorption effect of the adsorbent on the flue gas discharged from the explosion-proof valve.

[0013] In one embodiment, the energy storage cabinet further includes a flue, which includes an outlet and multiple inlets. Multiple battery packs and adsorption devices are present, with the multiple adsorption devices positioned on the side of the flue facing the multiple battery packs. Explosion-proof valves of the multiple battery packs extend one-to-one into the first chamber of each of the multiple adsorption devices, and the outlets of the multiple adsorption devices are connected one-to-one to the multiple inlets.

[0014] Compared to methods where multiple battery packs are connected to a single adsorption device and flue, this approach, with multiple air inlets and adsorption devices, ensures that the gas emitted from each battery pack can be quickly discharged into the flue, preventing excessive internal pressure and reducing the risk of battery pack explosion. Furthermore, it allows for individual adsorption of the flue gas emitted from multiple battery packs, improving adsorption efficiency. Additionally, it ensures a more uniform distribution of flue gas within the flue, reducing damage to the flue.

[0015] In one embodiment, multiple battery packs and multiple adsorption devices are spaced apart along a first direction. The flue includes multiple first pipe segments, each extending along a second direction. The multiple first pipe segments are arranged side by side along the first direction, and one end of two adjacent first pipe segments is connected through a second pipe segment in the second direction. Two second pipe segments connected to the two ends of the same first pipe segment are staggered in the first direction, and the first direction is perpendicular to the second direction.

[0016] This can be understood as multiple first pipe segments and multiple second pipe segments connected to form a "serpentine" pipe. This arrangement reduces the size of the flue in both the first and second directions, thus minimizing the space occupied by the flue in both directions.

[0017] In some embodiments, the flue is provided with a structure for treating flue gas. For example, in some embodiments, the flue is provided with a catalyst for treating flue gas. The "serpentine" pipe can increase the area of ​​the catalyst in the flue and increase the flow time of the flue gas in the flue, ensuring that the concentration of combustible gases, toxic gases and other gases in the flue gas discharged from the flue is reduced to the lower limit of safe emission.

[0018] In one embodiment, the length of the first pipe segment in the second direction is greater than the length of the second pipe segment in the first direction, and multiple air inlets are spaced apart along the first direction, with the multiple air inlets located in different first pipe segments.

[0019] Because the second pipe section is shorter than the first pipe section, placing the air inlet on the first pipe section allows the flue gas to quickly enter the first pipe of the flue from the adsorption device and flow within the flue. This ensures that the flue gas discharged from the battery pack can quickly and continuously pass through the adsorption device into the flue, reducing the risk of battery pack explosion. Conversely, if the air inlet is placed on the second pipe section, the flue gas discharged from the adsorption device will first enter the second pipe section. Since the second pipe section is shorter than the first pipe section, the flue gas may accumulate at the junction of the first and second pipe sections. This would affect the flue gas discharge from the adsorption device, and consequently affect the discharge of flue gas from the battery pack, increasing the risk of battery pack explosion.

[0020] In one embodiment, a fan is installed inside the flue, the fan is installed on the inner wall of the first pipe section, and the fan is located at one end of the first pipe section in the second direction.

[0021] Since the length of the first pipe section is greater than the length of the second pipe section, the fan is set at one end of the first pipe section in the second direction, that is, near the connection between the first and second pipe sections. In this way, the fan can accelerate the flow rate of the flue gas in the first pipe section, thereby ensuring that the flue gas flows quickly towards the flue outlet and is then quickly discharged from the flue.

[0022] In some embodiments, multiple fans are provided, and the multiple fans are located on the same side of the flue in the first direction so that the power supply lines of the multiple fans can be connected to a power source.

[0023] In one embodiment, along the second direction, the air outlet of the fan is arranged facing the air inlet, and at least a portion of the air outlet is arranged opposite to the air inlet.

[0024] This configuration serves two purposes: firstly, the fan can accelerate the flow rate of flue gas within the flue in the event of thermal runaway of the battery pack, ensuring that the flue gas is discharged directionally along the flue. Secondly, it prevents flue gas from accumulating near the outlet of the adsorption device, thereby reducing the flue gas concentration around the outlet of the adsorption device within the flue. This prevents the flue gas concentration at the outlet of the adsorption device from becoming too high, which could hinder the rapid discharge of flue gas from the adsorption device and consequently hinder the rapid discharge of flue gas from the battery pack, thus reducing the risk of battery pack explosion.

[0025] In one embodiment, a catalyst and a light-emitting device for emitting light energy are also provided inside the flue. The catalyst is disposed on the inner wall of the first pipe section, the light-emitting device is used to provide light energy into the flue, and the catalyst is used to catalyze the gas reaction inside the flue under the action of light energy.

[0026] Light-emitting devices, such as ultraviolet lamps, are used to emit light energy into the flue to provide light energy into the flue. Catalysts are used to catalyze the reaction of gases in the flue, such as combustible gases, under the action of light energy, so that combustible gases are converted into non-combustible gases through photocatalytic reaction, reducing the risk of fire or explosion caused by combustible gases outside the energy storage cabinet, and ensuring high safety.

[0027] In some embodiments, the catalyst is used to catalyze the reaction of toxic gases in the flue under the action of light energy, so that toxic gases are converted into non-toxic gases through photocatalytic reaction, preventing toxic gases from being emitted outside the energy storage cabinet and causing damage to the environment and personnel.

[0028] In one embodiment, the inner wall of the first pipe section is further provided with a plurality of first protrusions, and the catalyst is disposed on the outer wall surface of the plurality of first protrusions. The light-emitting device includes a first light-emitting device, the first light-emitting device having a light-emitting surface, and the light-emitting surface of the first light-emitting device being disposed opposite to the plurality of first protrusions.

[0029] The arrangement of multiple first protrusions creates a toothed structure on the inner wall of the first pipe section, which increases the catalyst distribution area, thereby increasing the contact area between the flue gas and the catalyst, and thus improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0030] The light-emitting surface of the first light-emitting device is arranged opposite to the multiple first protrusions, so that the light energy emitted by the first light-emitting device can directly irradiate the multiple first protrusions. This can be understood as irradiating the catalyst on the multiple first protrusions to further improve the photocatalytic reaction efficiency of the flue gas.

[0031] In one embodiment, an oxygen supply agent is also provided inside the flue. The oxygen supply agent is disposed on the inner wall of the first pipe section and is used to supply oxygen into the flue.

[0032] Since the catalyst is located in the first pipe, the oxygen supply agent is also located in the first pipe section. The oxygen supplied by the oxygen supply agent is first delivered to the first pipe section to provide sufficient oxygen for the chemical catalytic reaction of the gas in the flue, thereby enhancing the catalytic effect of the gas catalytic reaction in the flue.

[0033] In one embodiment, the inner wall of the first pipe section includes a first wall surface and a second wall surface disposed opposite to each other, the catalyst is disposed on the first wall surface, and the oxygen supply agent is disposed on the second wall surface.

[0034] This facilitates the placement of the catalyst and oxygen supply agent on the inner wall of the flue. For example, in some embodiments, the catalyst and oxygen supply agent can be placed using a spraying process, with the catalyst and oxygen supply agent placed on two separate wall surfaces, which is convenient for operation. Furthermore, it ensures that the catalyst and oxygen supply agent are evenly coated on the inner wall of the flue.

[0035] In some embodiments, the first wall is located above the second wall. Since oxygen and flue gas move upwards in the flue, placing the first wall above the second wall, i.e., the catalyst is located above the oxygen supply agent, enables sufficient contact between oxygen, flue gas and catalyst above the flue, further improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0036] In one embodiment, the inner wall of the first pipe section is further provided with a plurality of second protrusions, and the oxygen supply agent is disposed on the outer wall surface of the plurality of second protrusions;

[0037] The light-emitting device includes a second light-emitting device, which has a light-emitting surface and is disposed opposite to a plurality of second protrusions.

[0038] The multiple second protrusions create a toothed structure on the inner wall of the first pipe section, which increases the distribution area of ​​the oxygen supply agent, allowing for uniform oxygen supply into the first pipe. This increases the contact area between the flue gas and oxygen, thereby improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0039] The light-emitting surface of the second light-emitting device is arranged opposite to the multiple second protrusions, so that the light energy emitted by the second light-emitting device can directly irradiate the multiple second protrusions. This can be understood as irradiating the oxygen supply agent on the multiple second protrusions, so as to ensure that the oxygen supply agent continuously supplies oxygen into the first pipe and further enhances the catalytic effect of the flue gas catalytic reaction.

[0040] In one embodiment, the housing includes a first part and a second part. A first chamber is located within the first part, and a second chamber is located within the second part. An inlet is located on the end face of the first part facing away from the second part. The surface of the battery housing facing the inlet has a mounting hole and a connector. An explosion-proof valve is housed within the mounting hole. The connector surrounds the outer periphery of the mounting hole, and an opening is provided at the end of the connector facing away from the mounting hole. The first part is inserted into the connector through the opening, and the end face of the first part facing away from the second part is connected to the battery housing.

[0041] During installation, the explosion-proof valve of the battery pack extends into the connector through the inlet at the end opposite to multiple battery cells. The first part of the connector, opposite to the mounting hole, has an opening. The first part, opposite to the second part, is inserted into the connector through the opening. The end face of the first part opposite to the second part is connected to the battery casing, such as by bonding or abutting, thereby achieving the connection between the battery pack and the adsorption device.

[0042] In some embodiments, after the explosion-proof valve and the adsorption device of the battery pack are connected, the battery pack can be fixed in the energy storage cabinet so that the battery pack is fixed relative to the adsorption device.

[0043] In some embodiments, a seal is provided between the end face of the first part facing away from the second part and the battery casing. The seal is arranged around the outer periphery of the mounting hole and abuts against both the battery casing and the end face of the first part facing away from the second part. Since the first part is inserted into the connector through the opening, the seal is located inside the connector. The seal prevents smoke from leaking into the cabinet through the gap between the end face of the first part facing away from the second part and the battery casing, reducing the risk of smoke accumulating inside the cabinet.

[0044] In one embodiment, the outer diameter of the first portion gradually increases in the direction from the inlet to the first plate.

[0045] This can be understood as the first part having a tapered structure, and the outer diameter of the first part at the inlet end being larger than the outer diameter of the first part at the first plate end. This helps reduce the friction and resistance when the first part is inserted into the connector, making it easier for the first part to be inserted into the connector and the insertion process smoother.

[0046] In some embodiments, the inner diameter of the connector gradually increases from the opening to the mounting hole, and the inner diameter of the connector at one end of the opening is smaller than the outer diameter of the first portion at one end of the first plate.

[0047] In this way, during the insertion of the connector into the first part, the gap between the inner wall of the connector and the outer wall of the first part gradually decreases, preventing dust, liquid, and other impurities from entering the connector through the gap between the connector and the outer wall of the first part and clogging the explosion-proof valve. In some embodiments, the outer diameter of the connector can be designed so that when the inner wall of the connector abuts against the outer wall of the first part, it prevents the flue gas after thermal runaway of the battery pack from being discharged into the energy storage cabinet through the gap between the connector and the adsorption device, reducing the risk of flue gas accumulation in the energy storage cabinet and thus reducing the risk of combustion and explosion after thermal runaway of the battery pack. In this embodiment, the inner diameter of the connector can be designed to ensure that when the inner wall of the connector abuts against the outer wall of the first part, the end face of the first part facing away from the second part is in contact with or has a suitable gap with the battery casing.

[0048] In other embodiments, the inner diameter of the connector gradually decreases from the opening to the mounting hole, and the inner diameter of the connector at the opening end is smaller than the outer diameter of the first portion at the first plate end, while the inner diameter of the connector at the mounting hole end is larger than the outer diameter of the first portion at the inlet end.

[0049] In this way, during the insertion of the first part into the connector, the larger inner diameter opening facilitates the insertion of the first part, corrects the insertion angle deviation of the first part, ensures an accurate and reliable connection between the first part and the connector, and reduces assembly time and cost. Furthermore, the gradually decreasing gap between the inner wall of the connector and the outer wall of the first part prevents dust, liquid, and other impurities from entering the connector through the gap between the connector and the outer wall of the first part, thus preventing blockage of the explosion-proof valve. In some embodiments, the outer diameter of the connector can be designed so that when the connector 1012 abuts against the outer wall of the first part 01, it prevents the exhaust gas from the battery pack 100 after thermal runaway from escaping through the gap between the connector and the first part into the energy storage cabinet, reducing the risk of exhaust gas accumulation in the energy storage cabinet and thus lowering the risk of combustion and explosion after thermal runaway of the battery pack. In this embodiment, the inner diameter of the connector can be designed to ensure that when the inner wall of the connector abuts against the outer wall of the first part, the end face of the first part facing away from the second part is in contact with or has a suitable gap from the battery casing.

[0050] A second aspect of this application provides a flue gas treatment device, comprising a flue and multiple adsorption devices. The flue includes an outlet and multiple inlets, the inlets being spaced apart along a first direction. Multiple adsorption devices are disposed within the flue, each including a housing and an adsorption element for filtering gas. The housing includes a receiving cavity, an outlet, and an inlet through which an explosion-proof valve of a battery pack passes. A first plate is disposed within the receiving cavity, which includes a first chamber and a second chamber located on different sides of the first plate. The inlet communicates with the first chamber, and the outlet communicates with the second chamber. The adsorption element is housed within the second chamber. Multiple first through holes are formed on the first plate, connecting the first chamber and the second chamber. The multiple inlets and the outlets of the multiple adsorption devices are connected one-to-one.

[0051] In the scenario where the flue gas treatment device provided in this application is used for flue gas treatment of a battery pack, gases such as hydrogen, carbon monoxide, and methane (hereinafter referred to as flue gas) generated after thermal runaway of the battery pack will be ejected from the explosion-proof valve. Since the explosion-proof valve extends into the first chamber through the inlet, the flue gas ejected from the explosion-proof valve can enter the first chamber and then enter the second chamber through the first through hole on the first plate. After being adsorbed and filtered by the adsorption element in the second chamber, it is discharged from the adsorption device through the outlet.

[0052] By setting the first plate, it is possible to prevent the adsorption component from entering the first chamber from the second chamber, thereby reducing the possibility of the adsorption component clogging the explosion-proof valve in the first chamber and reducing the risk of the explosion-proof valve clogging after the battery pack thermal runaway.

[0053] By incorporating multiple air inlets and adsorption devices, the system ensures that the flue gas emitted from each battery pack can be quickly discharged into the flue, preventing excessive internal pressure and reducing the risk of battery pack explosion. Furthermore, it allows for the adsorption of flue gas from multiple battery packs individually, improving adsorption efficiency. Additionally, it ensures a more uniform distribution of flue gas within the flue, minimizing damage to the flue.

[0054] In one embodiment, the adsorption device further includes a second plate disposed between the outlet and the adsorption element. The second plate has a plurality of second through holes that connect the outlet and the second chamber.

[0055] The flue gas, after being adsorbed and filtered by the adsorbent in the second chamber, can be discharged from the adsorption device through the second through hole and the outlet on one side.

[0056] By setting a second plate, it is possible to prevent the adsorbent from moving toward the outlet and to prevent the high-pressure gas entering the adsorption device from blasting the adsorbent out of the second chamber.

[0057] In one embodiment, multiple adsorption devices are spaced apart along a first direction. The flue includes multiple first pipe segments, each extending along a second direction. The multiple first pipe segments are arranged side by side along the first direction, and one end of two adjacent first pipe segments is connected through a second pipe segment in the second direction. Two second pipe segments connected to the two ends of the same first pipe segment are staggered in the first direction, and the first direction is perpendicular to the second direction.

[0058] This can be understood as multiple first pipe segments and multiple second pipe segments connected to form a "serpentine" pipe. This arrangement reduces the size of the flue in both the first and second directions, thus minimizing the space occupied by the flue in both directions.

[0059] In some embodiments, the flue is provided with a structure for treating flue gas. For example, in some embodiments, the flue is provided with a catalyst for treating flue gas. The "serpentine" pipe can increase the distribution area of ​​the catalyst in the flue and increase the flow time of the flue gas in the flue, ensuring that the concentration of combustible gas discharged from the flue is reduced to the lower limit of safe emission.

[0060] In one embodiment, the length of the first pipe segment in the second direction is greater than the length of the second pipe segment in the first direction, and multiple air inlets are spaced apart along the first direction, with the multiple air inlets located in different first pipe segments.

[0061] Because the second pipe section is shorter than the first pipe section, placing the air inlet on the first pipe section allows the flue gas to quickly enter the first pipe of the flue from the adsorption device and then exit from the flue. Conversely, if the air inlet is placed on the second pipe section, the flue gas exiting the adsorption device will first enter the second pipe section. Since the second pipe section is shorter than the first pipe section, the flue gas may accumulate at the connection between the first and second pipe sections, which will affect the flue gas discharge from the adsorption device.

[0062] In one embodiment, a fan is installed inside the flue, the fan is installed on the inner wall of the first pipe section, and the fan is located at one end of the first pipe section in the second direction.

[0063] Since the length of the first pipe section is greater than the length of the second pipe section, the fan is set at one end of the first pipe section in the second direction, that is, near the connection between the first and second pipe sections. In this way, the fan can accelerate the flow rate of the flue gas in the first pipe section, thereby ensuring that the flue gas flows quickly towards the flue outlet and is then quickly discharged from the flue.

[0064] In some embodiments, multiple fans are provided, and the multiple fans are located on the same side of the flue in the first direction so that the power supply lines of the multiple fans can be connected to a power source.

[0065] In one embodiment, along the second direction, the air outlet of the fan is arranged facing the air inlet, and at least a portion of the air outlet is arranged opposite to the air inlet.

[0066] This setup serves two purposes: firstly, the fan accelerates the flow rate of the flue gas within the flue, ensuring its directional discharge. Secondly, it prevents flue gas from accumulating near the outlet of the adsorption device, thereby reducing the flue gas concentration around the outlet and preventing excessively high concentrations that could hinder the rapid discharge of the adsorption device.

[0067] In one embodiment, a catalyst and a light-emitting device for emitting light energy are also provided inside the flue. The catalyst is disposed on the inner wall of the first pipe section, the light-emitting device is used to provide light energy into the flue, and the catalyst is used to catalyze the gas reaction inside the flue under the action of light energy.

[0068] Light-emitting devices, such as ultraviolet lamps, are used to emit light energy into the flue to provide light energy into the flue. Catalysts are used to catalyze the reaction of gases in the flue, such as combustible gases, under the action of light energy, so that combustible gases are converted into non-combustible gases through photocatalytic reaction, reducing the risk of fire or explosion caused by combustible gases when they are discharged into the external environment, and thus ensuring high safety.

[0069] In some embodiments, the catalyst is used to catalyze the reaction of toxic gases in the flue under the action of light energy, so that toxic gases are converted into non-toxic gases through photocatalytic reaction, preventing toxic gases from being emitted into the external environment and causing damage to the environment and people.

[0070] In one embodiment, the inner wall of the first pipe section is further provided with a plurality of first protrusions, and the catalyst is disposed on the outer wall surface of the plurality of first protrusions. The light-emitting device includes a first light-emitting device, the first light-emitting device having a light-emitting surface, and the light-emitting surface of the first light-emitting device being disposed opposite to the plurality of first protrusions.

[0071] The arrangement of multiple first protrusions creates a toothed structure on the inner wall of the first pipe section, which increases the catalyst distribution area, thereby increasing the contact area between the flue gas and the catalyst, and thus improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0072] The light-emitting surface of the first light-emitting device is arranged opposite to the multiple first protrusions, so that the light energy emitted by the first light-emitting device can directly irradiate the multiple first protrusions. This can be understood as irradiating the catalyst on the multiple first protrusions to further improve the photocatalytic reaction efficiency of the flue gas.

[0073] In one embodiment, an oxygen supply agent is also provided inside the flue. The oxygen supply agent is disposed on the inner wall of the first pipe section and is used to supply oxygen into the flue.

[0074] Since the catalyst is located in the first pipe, the oxygen supply agent is also located in the first pipe section. The oxygen supplied by the oxygen supply agent is first delivered to the first pipe section to provide sufficient oxygen for the chemical catalytic reaction of the gas in the flue, thereby enhancing the catalytic effect of the gas catalytic reaction in the flue.

[0075] In one embodiment, the inner wall of the first pipe section includes a first wall surface and a second wall surface disposed opposite to each other, the catalyst is disposed on the first wall surface, and the oxygen supply agent is disposed on the second wall surface.

[0076] This facilitates the placement of the catalyst and oxygen supply agent on the inner wall of the flue. For example, in some embodiments, the catalyst and oxygen supply agent can be placed using a spraying process, with the catalyst and oxygen supply agent placed on two separate wall surfaces, which is convenient for operation. Furthermore, it ensures that the catalyst and oxygen supply agent are evenly coated on the inner wall of the flue.

[0077] In some embodiments, the first wall is located above the second wall. Since oxygen and flue gas move upwards in the flue, placing the first wall above the second wall, i.e., the catalyst is located above the oxygen supply agent, enables sufficient contact between oxygen, flue gas and catalyst above the flue, further improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0078] In one embodiment, the inner wall of the first pipe section is further provided with a plurality of second protrusions, and the oxygen supply agent is disposed on the outer wall surface of the plurality of second protrusions;

[0079] The light-emitting device includes a second light-emitting device, which has a light-emitting surface and is disposed opposite to a plurality of second protrusions.

[0080] The multiple second protrusions create a toothed structure on the inner wall of the first pipe section, which increases the distribution area of ​​the oxygen supply agent, allowing for uniform oxygen supply into the first pipe. This increases the contact area between the flue gas and oxygen, thereby improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0081] The light-emitting surface of the second light-emitting device is arranged opposite to the multiple second protrusions, so that the light energy emitted by the second light-emitting device can directly irradiate the multiple second protrusions. This can be understood as irradiating the oxygen supply agent on the multiple second protrusions, so as to ensure that the oxygen supply agent continuously supplies oxygen into the first pipe and further enhances the catalytic effect of the flue gas catalytic reaction. Attached Figure Description

[0082] Figure 1 This is one of the structural schematic diagrams of an energy storage cabinet provided in an embodiment of this application;

[0083] Figure 2 This is a second schematic diagram of the structure of an energy storage cabinet provided in an embodiment of this application;

[0084] Figure 3 One of the partial structural schematic diagrams of an energy storage cabinet provided in an embodiment of this application;

[0085] Figure 4 for Figure 3 Another structural diagram of the energy storage cabinet in the diagram;

[0086] Figure 5 for Figure 4 A magnified view of a section at position A, where the backplate has been removed;

[0087] Figure 6 A second partial structural schematic diagram of an energy storage cabinet provided in an embodiment of this application;

[0088] Figure 7 This is one of the partial structural schematic diagrams of a battery pack provided in an embodiment of this application;

[0089] Figure 8 This is a second partial structural schematic diagram of a battery pack provided in an embodiment of this application;

[0090] Figure 9 This is a schematic diagram of the structure of an adsorption device provided in an embodiment of this application;

[0091] Figure 10 for Figure 9 Exploded view of the adsorption device in the diagram;

[0092] Figure 11 for Figure 9 A schematic diagram of the internal structure of the adsorption device in the image;

[0093] Figure 12 A third partial structural schematic diagram of an energy storage cabinet provided in an embodiment of this application;

[0094] Figure 13 Fourth partial structural schematic diagram of an energy storage cabinet provided for an embodiment of this application;

[0095] Figure 14 This is a schematic diagram of the structure of a flue gas treatment device provided in an embodiment of this application;

[0096] Figure 15 This is a schematic diagram of a flue structure provided in an embodiment of this application;

[0097] Figure 16 This is a schematic diagram of the internal structure of a flue provided in an embodiment of this application;

[0098] Figure 17 This is a schematic diagram of the internal structure of another flue provided in an embodiment of this application;

[0099] Figure 18A partial cross-sectional view of a first pipe section in a flue provided for an embodiment of this application;

[0100] Figure 19 This is a control flowchart of an energy storage cabinet provided in an embodiment of this application.

[0101] Figure label:

[0102] 1000-Energy storage cabinet; 100-Battery pack; 101-Battery casing; 1011-Mounting hole; 1012-Connector; 1013-Opening; 1014-Filter cover; 102-Explosion-proof valve; 103-Battery cell; 300-Cabinet body; 301-Divider plate; 302-Mounting rack; 303-Upper chamber; 304-Lower chamber; 306-Back panel; 3061-Smoke exhaust port; 400-Cabinet door; 401-Flow hole; 500-Liquid cooling unit; 600-Power converter; 700-Energy storage converter; 800-Control box;

[0103] 10 - Flue gas treatment device; 20 - Seals;

[0104] 1-Adsorption device; 11-Shell; 111-Receiving cavity; 1111-First chamber; 1112-Second chamber; 112-Inlet; 113-Outlet; 01-First part; 02-Second part; 12-Adsorption element; 13-First plate; 131-First through hole; 14-Second plate; 141-Second through hole;

[0105] 2-Fluorite; 211-Air inlet; 212-Air outlet; 213-Drain outlet; 22-First pipe section; 221-First wall surface; 222-Second wall surface; 223-First protrusion; 224-Second protrusion; 23-Second pipe section; 24-Third pipe section; 25-First mounting plate; 26-Second mounting plate;

[0106] 3-Fan; 31-Air outlet; 4-Catalyst; 5-Light-emitting device; 51-First light-emitting device; 511-First light-emitting surface; 52-Second light-emitting device; 521-Second light-emitting surface; 6-Oxygen supply agent. Detailed Implementation

[0107] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0108] In this application, unless otherwise expressly specified and limited, the terms "upper", "lower", "front", "back", "left", "right", etc., indicating orientation or positional relationship may be defined relative to the orientation of the components schematically placed in the accompanying drawings. These directional terms may be relative concepts, used for relative description and clarification, and may change accordingly depending on the orientation of the components in the accompanying drawings. They should not be construed as limitations on this application.

[0109] In this application, the terms "first," "second," etc., are used for descriptive purposes only to distinguish one element from another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0110] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.

[0111] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines or channels, the terms "connection" and "linkage" as used in this application have the meaning of establishing electrical conductivity. The specific meaning needs to be understood in conjunction with the context.

[0112] Furthermore, in this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0113] In the accompanying drawings of the embodiments of this application, solid structures such as parts and components are represented by guide lines; hollow structures such as openings, holes, spaces, and cavities are represented by guide lines with arrows.

[0114] This application provides an energy storage cabinet that can be applied to small-scale industrial and commercial (e.g., small factories), medium-sized industrial and commercial, large-scale industrial and commercial, photovoltaic-storage charging stations, and small and medium-sized microgrids (e.g., islands) and power station scenarios such as photovoltaic energy storage power stations, grid energy storage power stations, and large microgrids, for the purpose of storing and releasing electrical energy.

[0115] Figure 1 This is one of the structural schematic diagrams of an energy storage cabinet provided in the embodiments of this application. The energy storage cabinet 1000 includes a cabinet door 400 and a cabinet body 300. The cabinet door 400 is closed relative to the cabinet body 300 to provide an external barrier for the structure inside the cabinet body 300, so as to protect the internal structure of the cabinet body 300.

[0116] Reference Figure 1 The cabinet door 400 is provided with multiple flow holes 401, through which external air can exchange heat with the internal structure of the cabinet 300 to reduce the internal temperature of the cabinet 300 and ensure the normal operation of the internal components of the cabinet 300.

[0117] Figure 2 This is a second structural schematic diagram of an energy storage cabinet provided as an embodiment of this application. (Refer to...) Figure 2 The energy storage cabinet 1000 includes multiple battery packs 100 for storing and releasing electrical energy. The multiple battery packs 100 are housed within a cabinet 300. In some embodiments, the energy storage cabinet 1000 includes a single battery pack 100 housed within the cabinet 300.

[0118] Reference Figure 2 In addition to the battery pack 100, the cabinet 300 also houses the liquid cooling unit 500, DC-DC converter, power conversion system (PCS), control box and other structures.

[0119] The liquid cooling unit 500 is used to supply coolant to heat-generating devices (such as battery pack 100, energy storage converter, DC-DC converter, etc.) within the energy storage cabinet 1000. The coolant exchanges heat with the battery pack 100 to remove heat from it. The coolant carrying heat then enters the liquid cooling unit 500 for further heat dissipation. The cooled coolant is then returned to the heat-generating devices, thereby achieving continuous heat dissipation and temperature control for the heat-generating devices. In some embodiments, refer to... Figure 1 and Figure 2 The liquid cooling unit 500 is installed inside the cabinet door 400 (i.e., the side of the cabinet door 400 opposite to the inner cavity of the cabinet body 300 when the cabinet door 400 is closed relative to the cabinet body 300). External air can exchange heat with the liquid cooling unit 500 through multiple flow holes 401 on the cabinet door 400 to reduce the temperature of the coolant inside the liquid cooling unit 500.

[0120] The energy storage converter is connected between the battery pack 100 and the power grid (and / or load) to achieve bidirectional energy conversion and external power output. It can control the charging and discharging process of the battery pack 100, perform AC-DC conversion, and enable the energy storage cabinet 1000 to directly supply power to AC loads in the absence of a power grid. For example, taking the power grid as an example, when the power grid needs the energy storage cabinet 1000 to discharge, the energy storage converter converts the DC power output from the battery pack 100 into AC power and outputs it to the power grid; when the power grid needs the energy storage cabinet 1000 to charge, the energy storage converter converts the AC power in the power grid into DC power and stores it in the battery pack 100.

[0121] A DC-DC converter is used to convert and regulate voltage. It converts direct current (DC) to different voltages to meet the energy transfer requirements between the battery pack 100 and the power grid or load. For example, in some embodiments, the DC-DC converter can convert lower voltage DC to higher voltage DC. In other embodiments, it can convert higher voltage DC to lower voltage DC.

[0122] The control box is used to manage and control the operating status of the energy storage cabinet 1000. For example, the control box collects information such as voltage, current, and temperature of the battery pack 100, processes and analyzes this data, thereby enabling monitoring and management of the battery pack 100 within the energy storage cabinet 1000. When an abnormal situation occurs in the battery pack 100, such as over-temperature or over-current, the control box will promptly issue an alarm and take corresponding protective measures to prevent the fault from escalating. In some embodiments, multiple battery packs 100 within the energy storage cabinet 1000 are connected in series or parallel to form a battery cluster, and the control box can be a cluster control box.

[0123] In the above embodiments, the structure and working principle of the liquid cooling unit 500, DC-DC converter, power conversion system (PCS), and control box are well known to those skilled in the art and will not be described in detail here.

[0124] Reference Figure 1 and Figure 2 The cabinet door 400 is hinged to the cabinet body 300. The cabinet door 400 can rotate around the hinge axis to open and close relative to the cabinet body 300. When the cabinet door 400 is open relative to the cabinet body 300, it facilitates the installation, replacement, and maintenance of the internal structure of the cabinet body 300. When the cabinet door 400 is closed relative to the cabinet body 300, it provides an external barrier for the internal structure of the cabinet body 300, thus protecting the internal structure.

[0125] In other embodiments of this application, the cabinet door 400 and the cabinet body 300 can be connected in various ways. For example, in some embodiments, the cabinet door 400 is provided with pulleys, and the cabinet body 300 is provided with slide rails. The pulleys move within the slide rails, thereby causing the cabinet door 400 to move relative to the cabinet body 300, so as to realize the opening and closing of the cabinet door 400 relative to the cabinet body 300. This application does not impose any special restrictions on the specific connection method between the cabinet door 400 and the cabinet body 300.

[0126] Figure 3 This is one of the partial structural schematic diagrams of an energy storage cabinet provided in an embodiment of this application. (Refer to...) Figure 2 and Figure 3 The cabinet 300 is equipped with a partition plate 301, which divides the inner cavity of the cabinet 300 into an upper chamber 303 and a lower chamber 304. The upper chamber 303 is used to accommodate the battery pack 100, and the lower chamber 304 is used to accommodate devices such as DC-DC converter, power conversion system (PCS), and control box.

[0127] In some embodiments, a mounting bracket 302 is provided in the upper chamber 303, and the battery pack 100 is fixed to the mounting bracket 302.

[0128] If the battery pack 100 inside the cabinet 300 malfunctions, it will produce flammable gases (hereinafter referred to as flue gas), such as hydrogen, carbon monoxide, methane, and volatile organic compounds (VOCs). Since the cabinet door 400 is closed relative to the cabinet 300 when the energy storage cabinet 1000 is in operation, the flue gas can easily accumulate inside the cabinet 300, posing a high risk of combustion and explosion.

[0129] To reduce the risk of combustion and explosion in the event of a runaway battery pack (100), refer to... Figure 3 The energy storage cabinet 1000 also includes a flue gas treatment device 10, which is installed on the inner wall of the cabinet 300. The flue gas treatment device 10 includes an inlet 112. The flue gas generated after the thermal runaway of the battery pack 100 can enter the flue gas treatment device 10 through the inlet 112. The flue gas generated after the thermal runaway of the battery pack 100 is treated by the flue gas treatment device 10, such as by filtration, adsorption, and catalysis, to reduce the concentration of combustible gases in the flue gas and reduce the risk of combustion and explosion after the thermal runaway of the battery pack 100.

[0130] In some embodiments, the flue gas treatment device 10 can directionally discharge the flue gas outside the cabinet 300 to reduce the risk of flue gas accumulating inside the cabinet 300, thereby reducing the risk of combustion and explosion after thermal runaway of the battery pack 100.

[0131] Since flue gas may contain combustible gases such as hydrogen, carbon monoxide, and methane, if these combustible gases are released directly into the environment without treatment, they may cause a fire or valve explosion if they encounter an ignition source. In some embodiments, the flue gas treatment device 10 can treat combustible gases to remove them from the flue gas, reducing the risk of fire or explosion caused by combustible gases outside the energy storage cabinet 1000, thus ensuring high safety.

[0132] In addition, the flue gas may contain toxic gases such as hydrogen fluoride (HF) and sulfur dioxide (SO2). Directly discharging thermal runaway flue gas can harm human health and pollute the environment. In some embodiments, the flue gas treatment device 10 can treat the toxic gases in the flue gas to remove them, reduce the harm of toxic gases to human health and the environment, and protect personnel and environmental safety.

[0133] Figure 4 for Figure 3 A structural schematic diagram of the energy storage cabinet from another perspective. (Refer to...) Figure 4 The cabinet body 300 includes a back panel 306. When the cabinet door 400 is closed relative to the cabinet body 300, the back panel 306 and the cabinet door 400 are positioned opposite each other. A smoke exhaust port 3061 is provided on the back panel 306.

[0134] Figure 5 for Figure 4 A magnified view of location A, showing that backplate 306 has been removed. (Refer to...) Figure 5 The flue gas treatment device 10 includes an outlet 212 and a first mounting plate 25 arranged around the outer periphery of the outlet 212.

[0135] Reference Figure 4 and Figure 5 The air outlet 212 and the smoke exhaust outlet 3061 are arranged opposite to each other, and the first mounting plate 25 is installed on the back plate 306 by fasteners (such as screws, locking pins, etc.). Since the first mounting plate 25 is arranged around the outer periphery of the air outlet 212, the flue gas output from the air outlet 212 can be discharged from the smoke exhaust outlet 3061 to the energy storage cabinet 1000.

[0136] In some embodiments, a sealing structure, such as a sealing ring or sealant, may be provided between the first mounting plate 25 and the back plate 306. The sealing structure is arranged around the outer periphery of the air outlet 212 and contacts the first mounting plate 25 and the back plate 306 respectively, so as to prevent the flue gas output from the air outlet 212 from entering the energy storage cabinet 1000 through the gap between the back plate 306 and the first mounting plate 25, and further reduce the risk of flue gas accumulating in the cabinet 300.

[0137] Figure 6 This is a second partial structural schematic diagram of an energy storage cabinet provided as an embodiment of this application. (Refer to...) Figure 6The flue gas treatment device 10 is located on one side of the plurality of battery packs 100.

[0138] Reference Figure 6 The flue gas treatment device 10 includes a flue 2 (Smog / Smoke Channel) and a plurality of adsorption devices 1, which are disposed on one side of the flue 2 facing a plurality of battery packs 100. In some embodiments, the battery packs 100 are spaced apart along a first direction. The plurality of adsorption devices 1 are also spaced apart along the first direction. The plurality of battery packs 100 are connected one-to-one with the plurality of adsorption devices 1.

[0139] Figure 7 This is one of the partial structural schematic diagrams of a battery pack provided in an embodiment of this application. (Refer to...) Figure 7 The battery pack 100 includes a battery casing 101, an explosion-proof valve 102, and multiple battery cells 103. The multiple battery cells 103 are located inside the battery casing 101, and the explosion-proof valve 102 is disposed on the battery casing 101.

[0140] After thermal runaway of the battery pack 100, smoke will be generated inside the battery casing 101. The smoke will accumulate inside the battery casing 101, and the pressure inside the battery casing 101 will gradually increase. When the pressure inside the battery casing 101 reaches the opening threshold of the explosion-proof valve 102, the explosion-proof valve 102 will open, and the gas inside the battery casing 101 can be discharged from the explosion-proof valve 102 to reduce the pressure inside the battery casing 101, thereby preventing the battery pack 100 from rupturing or exploding due to excessive pressure.

[0141] In some embodiments, a filter cover 1014 is provided inside the battery housing 101, and the filter cover 1014 covers the explosion-proof valve 102, so that flue gas passes through the filter cover 1014 and then through the explosion-proof valve 102 to be discharged from the battery housing 101. The filter cover 1014 can prevent the battery cells 103 or larger particles inside the battery housing 101 from entering the explosion-proof valve 102 from the battery housing 101 and clogging the explosion-proof valve 102, thereby reducing the risk of the battery pack 100 rupturing or exploding due to excessive pressure caused by the blockage of the explosion-proof valve 102.

[0142] Reference Figure 7 The battery housing 101 is provided with a mounting hole 1011 and a connector 1012, and the explosion-proof valve 102 is accommodated in the mounting hole 1011. The connector 1012 is provided on the outer surface of the side wall of the battery housing 101 where the mounting hole 1011 is provided, and the connector 1012 is provided around the outer periphery of the mounting hole 1011 of the explosion-proof valve 102, and the end of the connector 1012 opposite to the mounting hole 1011 is provided with an opening 1013.

[0143] The inner diameter of the connector 1012 gradually increases from the opening 1013 to the mounting hole 1011. This can be understood as the connector 1012 having a gradually expanding structure from the opening 1013 to the mounting hole 1011, with the inner diameter of the connector 1012 at the opening 1013 end being smaller than the inner diameter of the connector 1012 at the mounting hole 1011 end. In some embodiments, the adsorption device 1 (e.g., ...) Figure 6 As shown, the end facing the battery pack 100 is inserted into the connector 1012 through the opening 1013. From the opening 1013 to the mounting hole 1011, the inner diameter of the connector 1012 gradually increases. Therefore, as the insertion depth of the adsorption device 1 increases, the gap between the inner wall of the connector 1012 and the outer wall of the insertion part of the adsorption device 1 gradually decreases. On the one hand, this can prevent dust, liquid and other impurities from entering the connector 1012 through the gap between the connector 1012 and the adsorption device 1 and clogging the explosion-proof valve 102. On the other hand, by designing the outer diameter of the connector 1012, when the connector 1012 abuts against the outer wall of the adsorption device 1, it can prevent the flue gas after the battery pack 100 thermal runaway from being discharged into the energy storage cabinet through the gap between the connector 1012 and the adsorption device 1, thereby reducing the risk of flue gas accumulating in the energy storage cabinet and thus reducing the risk of combustion and explosion after the battery pack 100 thermal runaway.

[0144] Figure 8 This is a second partial structural schematic diagram of a battery pack provided in an embodiment of this application. Figure 7 The illustrated embodiment differs from the one shown in that, Figure 8 In the illustrated embodiment, the inner diameter of the insert gradually decreases from the opening 1013 to the mounting hole 1011. This can be understood as the insert 1012 having a tapered structure from the opening 1013 to the mounting hole 1011, and the inner diameter of the insert 1012 at the opening 1013 end being larger than the inner diameter of the insert 1012 at the mounting hole 1011 end. In some embodiments, the adsorption device 1 (e.g., Figure 6 As shown, the end facing the battery pack 100 is inserted into the connector 1012 through the opening 1013. From the opening 1013 to the mounting hole 1011, the inner diameter of the connector 1012 gradually decreases. The larger inner diameter of the opening 1013 makes it easier to guide the insertion of the adsorption device 1, corrects the insertion angle deviation of the adsorption device 1, ensures accurate and reliable connection between the adsorption device 1 and the connector 1012, and reduces assembly time and cost.

[0145] Figure 9 This is a schematic diagram of an adsorption device provided in an embodiment of this application. Figure 10 for Figure 9 An exploded view of the adsorption device in the image. Figure 11 for Figure 9 A schematic diagram of the internal structure of the adsorption device. (Refer to...) Figure 9 , Figure 10 and Figure 11 The adsorption device 1 includes a housing 11 and an adsorption element 12 for filtering gases. The housing 11 includes a first part 01 and a second part 02, and includes a receiving cavity 111, an inlet 112, and an outlet 113. A first plate 13 is also disposed within the receiving cavity 111. The receiving cavity 111 includes a first chamber 1111 and a second chamber 1112 located on different sides of the first plate 13. The first chamber 1111 is located within the first part 01, and the second chamber 1112 is located within the second part 02. The inlet 112 is located on the end face of the first part 01 facing away from the second part 02, and communicates with the first chamber 1111. The outlet 113 communicates with the second chamber 1112. The adsorption element 12 is housed in the second chamber 1112. A plurality of first through holes 131 are provided on the first plate 13, and the first through holes 131 communicate with the first chamber 1111 and the second chamber 1112.

[0146] Flue gas enters the first chamber 1111 through inlet 112 and then enters the second chamber 1112 through multiple first through holes 131 on the first plate 13. The adsorbent 12 in the second chamber 1112 can adsorb and filter the flue gas flowing through it. For example, in some embodiments, the adsorbent 12 can adsorb solid particulate matter (e.g., carbon powder particles, membrane fragments, electrode particles, etc.), electrolyte, and gas molecules in the flue gas. For example, the adsorbent 12 may include substances with strong adsorption capacity such as activated carbon and molecular sieves. In other embodiments of this application, the adsorbent 12 can also be in other forms, such as activated alumina and zeolite. This application does not impose any special limitations on the specific form of the adsorbent 12.

[0147] By setting the first plate 13, it is possible to prevent the adsorption member 12 from moving toward the inlet 112 and to prevent the adsorption member 12 from entering the first chamber 1111 from the second chamber 1112.

[0148] In some embodiments, refer to Figure 11 The adsorption device 1 also includes a second plate 14, which is located between the outlet 113 and the adsorption element 12. The second plate 14 has multiple second through holes 141, which connect the outlet 113 and the second chamber 1112. The flue gas that has been adsorbed and filtered by the adsorption element 12 is discharged from the adsorption device 1 through the multiple through holes of the second plate 14 from the outlet 113.

[0149] By setting the second plate 14, it is possible to prevent the adsorption element 12 from moving toward the outlet 113, and to prevent the high-pressure gas from rushing the adsorption element 12 out into the adsorption device 1 when the explosion-proof valve 102 of the battery pack 100 is released.

[0150] There can be various ways to connect the first plate 13 to the housing 11 and the second plate 14 to the housing 11. For example, the housing 11 and the first plate 13 can be integrally formed to simplify the processing and assembly of the adsorption device 1. Alternatively, the housing 11 can be bonded, welded, or inserted to the first plate 13 and the second plate 14 respectively. This application does not impose any special restrictions on the connection methods between the first plate 13 and the housing 11, or between the second plate 14 and the housing 11.

[0151] Figure 12 This is the third partial structural schematic diagram of an energy storage cabinet provided in an embodiment of this application. (Refer to...) Figure 12 The explosion-proof valve 102 extends into the first chamber 1111 through the inlet 112 from the end opposite to the multiple battery cells 103.

[0152] Since the explosion-proof valve 102 extends into the first chamber 1111 through the inlet 112 from the end opposite to the multiple battery cells 103, the flue gas discharged from the explosion-proof valve 102 can enter the first chamber 1111 and then enter the second chamber 1112 through the multiple through holes on the first plate 13. The second chamber 1112 contains an adsorption element 12, which can physically adsorb the flue gas, thereby filtering the flue gas flowing through it and reducing the concentration of combustible and toxic gases in the flue gas. This reduces the risk of fire or explosion caused by combustible gases in the flue gas, and also reduces the harm of toxic gases in the flue gas to human health and the environment.

[0153] In the embodiments provided in this application, the first plate 13 prevents the adsorbent 12 from moving toward the explosion-proof valve 102, that is, prevents the adsorbent 12 from entering the first chamber 1111 from the second chamber 1112, reducing the possibility of the adsorbent 12 blocking the explosion-proof valve 102 in the first chamber 1111, and ensuring that the flue gas in the battery case 101 can be discharged from the explosion-proof valve 102. Conversely, without the first plate 13, the adsorbent 12 may move toward the explosion-proof valve 102, blocking the explosion-proof valve 102, thereby preventing the flue gas in the battery case 101 from being discharged normally, causing the battery pack 100 to rupture or explode due to excessive pressure, endangering the operational reliability of the energy storage cabinet 1000.

[0154] Reference Figure 12 The first part 01 is inserted into the connector 1012 through the opening 1013, and the end face of the first part 01 facing away from the second part 02 is connected to the battery case 101, for example, by bonding or abutting.

[0155] During installation, the explosion-proof valve 102 of the battery pack 100 extends into the connector 1012 through the inlet 112 at one end away from the multiple battery cells 103. The first part 01 is provided with an opening 1013 at one end away from the connector 1012 and away from the mounting hole 1011. The first part 01 is inserted into the connector 1012 through the opening 1013 at one end away from the second part 02. The end face of the first part 01 away from the second part 02 is connected to the battery case 101, such as by bonding or abutting, thereby realizing the connection between the battery pack 100 and the adsorption device 1.

[0156] In some embodiments, after the explosion-proof valve 102 of the battery pack 100 and the adsorption device 1 are connected, the battery pack 100 can be fixed inside the energy storage cabinet 1000 so that the battery pack 100 is fixed relative to the adsorption device 1.

[0157] In some embodiments, a sealing member 20 is provided between the end face of the first part 01 facing away from the second part 02 and the battery housing 101. The sealing member 20 is arranged around the outer periphery of the mounting hole 1011, and the sealing member 20 abuts against the battery housing 101 and the end face of the first part 01 facing away from the second part 02. Since the first part 01 is inserted into the connector 1012 through the opening 1013, the sealing member 20 is located inside the connector 1012. By providing the sealing member 20, it is possible to prevent smoke from leaking into the cabinet 300 from the gap between the end face of the first part 01 facing away from the second part 02 and the battery housing 101, thereby reducing the risk of smoke accumulating in the cabinet 300.

[0158] In some embodiments, refer to Figure 12 From the inlet 112 to the first plate 13, the outer diameter of the first part 01 gradually increases.

[0159] This can be understood as follows: from the first plate 13 to the inlet 112, the first part 01 has a tapered structure, and the outer diameter of the first part 01 at the inlet 112 is larger than the outer diameter of the first part 01 at the first plate 13. This helps to reduce the friction and resistance when the first part 01 is inserted into the connector 1012, making it easier for the first part 01 to be inserted into the connector 1012 and making the insertion process smoother.

[0160] In some embodiments, refer to Figure 12 In the direction from the opening 1013 to the mounting hole 1011, the inner diameter of the connector 1012 gradually increases, and the inner diameter of the connector 1012 at the opening 1013 end is smaller than the outer diameter of the first part 01 at the first plate 13 end.

[0161] Thus, during the insertion of the connector 1012 into the first part 01, the gap between the inner wall of the connector 1012 and the outer wall of the first part 01 gradually decreases, preventing dust, liquid, and other impurities from entering the connector 1012 through the gap between the connector 1012 and the outer wall of the first part 01 and clogging the explosion-proof valve 102. In some embodiments, the outer diameter of the connector 1012 can be designed so that when the inner wall of the connector 1012 abuts against the outer wall of the first part 01, it prevents the flue gas after thermal runaway of the battery pack 100 from being discharged into the energy storage cabinet through the gap between the connector 1012 and the adsorption device 1, reducing the risk of flue gas accumulating in the energy storage cabinet and thus reducing the risk of combustion and explosion after thermal runaway of the battery pack 100.

[0162] In some embodiments, the inner diameter of the connector 1012 can be designed to ensure that when the inner wall surface of the connector 1012 abuts against the outer wall surface of the first part 01, the end face of the first part 01 facing away from the second part 02 is in contact with or has a suitable gap with the battery case 101.

[0163] For example, in some embodiments, the end face of the first part 01 facing away from the second part 02 is bonded to the battery casing 101. When the inner wall surface of the connector 1012 abuts against the outer wall surface of the first part 01, the end face of the first part 01 facing away from the second part 02 is in contact with the battery casing 101. As another example, in some embodiments, when a sealing member 20 is provided between the end face of the first part 01 facing away from the second part 02 and the battery casing 101, when the inner wall surface of the connector 1012 abuts against the outer wall surface of the first part 01, the gap between the end face of the first part 01 facing away from the second part 02 and the battery casing 101 causes the sealing member 20 to be in a compressed state. Thus, the sealing member 20 abuts against both the battery casing 101 and the first part 01 to ensure a tight seal.

[0164] Figure 13 This is the fourth partial structural schematic diagram of an energy storage cabinet provided as an embodiment of this application. Figure 12 The difference between the embodiments shown is that, Figure 13 In the embodiment shown, the inner diameter of the connector 1012 gradually decreases from the opening 1013 to the mounting hole 1011, and the inner diameter of the connector 1012 at the opening 1013 end is smaller than the outer diameter of the first part 01 at the first plate 13 end, while the inner diameter of the connector 1012 at the mounting hole 1011 end is larger than the outer diameter of the first part 01 at the inlet 112 end.

[0165] Thus, during the insertion of the first part 01 into the connector 1012, the larger inner diameter opening 1013 facilitates the insertion of the first part 01, corrects the insertion angle deviation of the first part 01, ensures an accurate and reliable connection between the first part 01 and the connector 1012, and reduces assembly time and cost. Furthermore, the gradually decreasing gap between the inner wall of the connector 1012 and the outer wall of the first part 01 prevents dust, liquids, and other impurities from entering the connector 1012 through the gap between the connector 1012 and the outer wall of the first part 01 and clogging the explosion-proof valve 102. In some embodiments, the outer diameter of the connector 1012 can be designed so that when the connector 1012 abuts against the outer wall of the first part 01, it prevents the flue gas from escaping through the gap between the connector 1012 and the first part 01 into the energy storage cabinet after thermal runaway of the battery pack 100, reducing the risk of flue gas accumulation in the energy storage cabinet and thus lowering the risk of combustion and explosion after thermal runaway of the battery pack 100.

[0166] In some embodiments, the inner diameter of the connector 1012 can be designed to ensure that when the inner wall surface of the connector 1012 abuts against the outer wall surface of the first part 01, the end face of the first part 01 facing away from the second part 02 is in contact with or has a suitable gap with the battery case 101.

[0167] For example, in some embodiments, the end face of the first part 01 facing away from the second part 02 is bonded to the battery casing 101. When the inner wall surface of the connector 1012 abuts against the outer wall surface of the first part 01, the end face of the first part 01 facing away from the second part 02 is in contact with the battery casing 101. As another example, in some embodiments, when a sealing member 20 is provided between the end face of the first part 01 facing away from the second part 02 and the battery casing 101, when the inner wall surface of the connector 1012 abuts against the outer wall surface of the first part 01, the gap between the end face of the first part 01 facing away from the second part 02 and the battery casing 101 causes the sealing member 20 to be in a compressed state. Thus, the sealing member 20 abuts against both the battery casing 101 and the first part 01 to ensure a tight seal.

[0168] Figure 14 This is a schematic diagram of a flue gas treatment device provided in an embodiment of this application. (Refer to...) Figure 14 Multiple adsorption devices 1 are disposed in the flue 2. The multiple adsorption devices 1 and the first mounting plate 25 are disposed on opposite sides of the flue 2. The multiple adsorption devices 1 face multiple battery packs 100 (e.g., Figure 6 The configuration is as shown, and multiple adsorption devices 1 are spaced apart along a first direction to facilitate one-to-one connection between the multiple adsorption devices 1 and the multiple battery packs 100. The first mounting plate 25 faces the back plate 306 (as shown). Figure 4 (As shown) is configured to allow gas in flue 2 to be discharged outside the energy storage cabinet 1000.

[0169] Figure 15This is a schematic diagram of a flue 2 provided in an embodiment of this application. (Refer to...) Figure 15 The flue 2 includes a second mounting plate 26, which is parallel to the back plate 306 (e.g., Figure 4 As shown), the second mounting plate 26 is provided with a plurality of first pipe segments 22, each of which extends along the second direction. The plurality of first pipe segments 22 are arranged side by side along the first direction. One end of any two adjacent first pipe segments 22 in the second direction is connected by a second pipe segment 23, and the two second pipe segments 23 connected to the two ends of the same first pipe segment 22 are staggered in the first direction.

[0170] This can be understood as multiple first pipe segments 22 and multiple second pipe segments 23 connected to form a "serpentine" pipe. This arrangement reduces the dimensions of the flue 2 in both the first and second directions, thus minimizing the space occupied by the flue 2 in both directions.

[0171] In this embodiment, the first direction is a plurality of battery packs 100 (e.g., Figure 6 The arrangement direction (as shown) is such that the second direction is perpendicular to the first direction.

[0172] In some embodiments, refer to Figure 15 The length of the first pipe segment 22 in the second direction is greater than the length of the second pipe segment 23 in the first direction. The flue 2 includes a plurality of air inlets 211, which are spaced apart along the first direction. Each air inlet 211 is located in the first pipe segment 22, and the plurality of air inlets 211 are located in different first pipe segments 22.

[0173] In this embodiment, multiple air inlets 211 are connected one-to-one with the outlets 113 of multiple adsorption devices 1, so that the flue gas output from each adsorption device 1 can enter the flue 2 through the corresponding air inlet 211. Compared with the method where multiple battery packs 100 are connected to the air inlet 211 of the flue 2 through a single adsorption device 1, the use of multiple air inlets 211 and multiple adsorption devices 1 can ensure that the gas discharged from each battery pack 100 can be quickly discharged into the flue 2, preventing excessive internal pressure of the battery pack 100 and reducing the risk of battery pack 100 explosion. On the other hand, it can also allow the flue gas discharged from multiple battery packs 100 to be adsorbed separately, improving adsorption efficiency. Furthermore, it can also make the flue gas more evenly distributed in the flue 2, reducing the damage of the gas to the flue 2.

[0174] In some embodiments, the length of the first pipe segment 22 in the second direction is greater than the length of the second pipe segment 23 in the first direction. An air inlet 211 is disposed on the first pipe segment 22. Since multiple first pipe segments 22 and multiple second pipe segments 23 are connected to form a "serpentine" pipe, and the length of the second pipe segment 23 is less than the length of the first pipe segment 22, disposing of the air inlet 211 on the first pipe segment 22 allows the flue gas to quickly enter the first pipe of the flue 2 from the adsorption device 1, and then flow within the flue 2, reducing the risk of the battery pack 100 exploding. Conversely, if the air inlet 211 is disposed on the second pipe segment 23, the flue gas discharged from the adsorption device 1 first enters the second pipe segment 23. Since the length of the second pipe segment 23 is less than the length of the first pipe segment 22, the flue gas may accumulate at the connection between the first pipe segment 22 and the second pipe segment 23. This affects the flue gas discharge from the adsorption device 1, and consequently affects the flue gas discharge from the battery pack 100, increasing the risk of the battery pack 100 exploding.

[0175] In some embodiments, refer to Figure 15 The flue 2 includes a third pipe section 24. One end of the third pipe section 24 is provided with a drain port 213. The other end of the third pipe section 24 is connected to the first pipe section 22 located at the bottom in the first direction among a plurality of first pipe sections 22. Liquids in the flue 2 (such as water, electrolyte sprayed out when the battery pack is thermally runaway, etc.) can be discharged from the flue 2 through the drain port 213 to prevent the liquid in the flue 2 from accumulating and flowing into the adsorption device 1 and clogging the explosion-proof valve 102.

[0176] In some embodiments, refer to Figure 15 The drain outlet 213 is located at the bottom of the third pipe section 24 in the first direction, that is, at the bottom of the flue 2 in the first direction, to ensure that the water in the flue 2 can flow out.

[0177] In some embodiments, refer to Figure 15 Air outlet 212 (e.g.) Figure 5 (As shown) is located above the flue 2 in the first direction. This can be understood as the air outlet 212 being located above the drain outlet 213 along the first direction. The portion of the flue 2 between the air outlet 212 and the drain outlet 213 has at least one bend. This bend can be understood as the connection point between the first pipe section 22 and the second pipe section 23. The bend effectively prevents external impurities, such as flying fluff and dust, from entering the flue 2 through the air outlet 212, thus avoiding blockage of the drain outlet at the bottom of the flue 2.

[0178] Figure 16 This is a schematic diagram of the internal structure of a flue provided in an embodiment of this application. (Refer to...) Figure 16 A fan 3 is installed inside the flue 2. The fan 3 is located on the inner wall of the first pipe section 22 and is located at one end of the first pipe section 22 in the second direction.

[0179] Since the length of the first pipe section 22 is greater than the length of the second pipe section 23, the fan 3 is set at one end of the first pipe section 22 in the second direction, that is, the fan 3 is set near the connection between the first pipe section 22 and the second pipe section 23. In this way, the fan 3 can accelerate the flow rate of the flue gas in the first pipe section 22, thereby ensuring that the flue gas flows quickly to the outlet 212 of the flue 2 and is then quickly discharged from the flue 2.

[0180] In some embodiments, fan 3 is powered by a power source, such as an AC auxiliary power source or a DC auxiliary power source, to ensure the reliability of fan 3's power supply in the event of thermal runaway of battery pack 100. The power supply line of fan 3 can be routed externally through wiring holes in the first pipe segment 22 or the second pipe segment 23. The on / off state of the power supply line can be controlled by a controller, such as... Figure 2 The control box shown controls the operation. After a thermal runaway alarm is triggered in the battery pack 100, the control and control power supply lines are connected to cause the fan 3 to rotate, thereby quickly and directionally expelling the flue gas in the flue 2 to the outside of the energy storage cabinet 1000.

[0181] In some embodiments, multiple fans 3 are provided, and the multiple fans 3 are located on the same side of the flue 2 in the first direction, so that the power supply lines of the multiple fans 3 can be connected to the power source.

[0182] exist Figure 16 In the embodiment shown, multiple fans 3 are provided, and each fan 3 is located in the first pipe section 22 without an air inlet 211.

[0183] Figure 17 This is a schematic diagram of the internal structure of another flue provided in an embodiment of this application. (Refer to...) Figure 17 Multiple fans 3 are provided, each fan 3 is located at an air inlet 211 (e.g., Figure 15 In the first pipe section 22 (as shown), and along the second direction, the air outlet 31 of the fan 3 is arranged facing the air inlet 211, and at least a portion of the air outlet 31 of the fan 3 is arranged opposite to the air inlet 211.

[0184] This configuration serves two purposes: firstly, the fan 3 can accelerate the flow rate of flue gas in the flue 2 in the event of thermal runaway of the battery pack 100, ensuring that the flue gas can be discharged directionally along the flue 2; secondly, it can prevent flue gas from accumulating near the outlet 113 of the adsorption device 1, thereby reducing the flue gas concentration around the outlet 113 of the adsorption device 1 in the flue 2. This prevents the flue gas concentration at the outlet 113 of the adsorption device 1 from being too high, which could prevent the flue gas from the adsorption device 1 from being discharged quickly, and consequently prevent the flue gas from the battery pack 100 from being discharged quickly, thus reducing the risk of the battery pack 100 exploding.

[0185] In other embodiments of this application, the plurality of fans 3 may also be arranged in other ways. For example, in some embodiments, some of the plurality of fans 3 are disposed in a first pipe section 22 without an air inlet 211, while another portion of the plurality of fans 3 are disposed in a first pipe section 22 with an air inlet 211. Those skilled in the art can selectively design according to actual needs.

[0186] Figure 18 This is a partial cross-sectional view of a first pipe section in a flue, provided as an embodiment of this application. Figure 18 The first pipe section shown is along the line parallel to the back plate 306 (e.g.) Figure 4 It is cut along the plane shown. (Refer to...) Figure 18 The flue 2 is also equipped with a catalyst 4 and a light-emitting device 5 for emitting light energy. The catalyst 4 is located on the inner wall of the first pipe section 22, the light-emitting device 5 is used to provide light energy into the flue 2, and the catalyst 4 is used to catalyze the gas reaction in the flue 2 under the action of light energy.

[0187] For example, in some embodiments, the light-emitting device 5 is an ultraviolet lamp, and the catalyst 4 is titanium dioxide. After the battery pack 100 issues a thermal runaway alarm, the ultraviolet lamp is powered on. Under the action of ultraviolet light, the titanium dioxide catalyzes the gases (e.g., combustible gases, toxic gases, etc.) in the flue 2, causing the gases (e.g., combustible gases, toxic gases, etc.) in the flue gas to undergo rapid chemical reactions and be removed. In other embodiments of this application, the light-emitting device 5 can also be other types of devices, such as visible light (wavelength 400nm-700nm). Correspondingly, the catalyst can be a ternary metal oxide (Pd / Mn3O4 / CeO2) nanocomposite material. This application does not impose special limitations on the specific forms of the light-emitting device 5 and the catalyst 4, and those skilled in the art can selectively design them according to actual needs.

[0188] The light-emitting device 5 is used to emit light energy into the flue 2 to provide light energy into the flue 2. The catalyst 4 is used to catalyze the reaction of combustible gases in the flue 2 under the action of light energy, so that the combustible gases are converted into non-combustible gases through photocatalytic reaction (achieving secondary removal of flue gas), ensuring that the concentration of combustible gases in the flue gas is reduced to the lower limit of the explosive concentration, thereby reducing the risk of combustible gases causing fire or explosion outside the energy storage cabinet 1000, and ensuring high safety.

[0189] In some embodiments, catalyst 4 is used to catalyze the reaction of toxic gases in flue 2 under the action of light energy, so that toxic gases are converted into non-toxic gases through photocatalytic reaction, preventing toxic gases from being emitted outside the energy storage cabinet 1000 and causing damage to the environment and personnel.

[0190] In other embodiments, catalyst 4 can also catalyze the reaction of gases other than combustible gases and toxic gases under the action of light energy, and this application does not impose any special limitations on this.

[0191] In some embodiments, the light-emitting device 5 is powered by a power source, such as an AC auxiliary power source or a DC auxiliary power source, to ensure the reliability of the power supply to the light-emitting device 5 in the event of thermal runaway of the battery pack 100. The power supply line of the power-generating device can be connected to the outside through a wiring hole opened in the side wall of the flue 2. The on / off state of the power supply line can be controlled by a controller, such as... Figure 2 The control box shown controls the system. After a thermal runaway alarm is triggered in the battery pack 100, the control and power supply lines are connected to activate the light-emitting device 5. Under the influence of light energy, the catalyst 4 rapidly removes the combustible gases in the flue gas through a catalytic chemical reaction.

[0192] In some embodiments, refer to Figure 18 The inner wall of the first pipe section 22 is further provided with a plurality of first protrusions 223, and the catalyst 4 is disposed (e.g., coated) on the outer wall surface of the plurality of first protrusions 223 and the inner wall surface of the first pipe section 22. The arrangement of the plurality of first protrusions 223 makes the inner wall of the first pipe section 22 form a toothed structure, which can increase the distribution area of ​​the catalyst 4, thereby increasing the contact area between the flue gas and the catalyst 4, and thus improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0193] In some embodiments, refer to Figure 18 The light-emitting device 5 includes a first light-emitting device 51, which has a light-emitting surface. The light-emitting surface of the first light-emitting device 51 is disposed opposite to a plurality of first protrusions 223. This allows the light energy emitted by the first light-emitting device 51 to directly irradiate the plurality of first protrusions 223, which can be understood as irradiating the catalyst 4 on the plurality of first protrusions 223, thereby further improving the photocatalytic reaction efficiency of the flue gas.

[0194] In some embodiments, an oxygen supply agent 6, such as peroxide or solid oxygen, is also provided in the flue 2. The oxygen supply agent 6 is disposed (e.g., coated) on the inner wall of the first pipe section 22. The oxygen supply agent 6 is used to provide oxygen to the flue 2 so as to provide sufficient oxygen for the chemical catalytic reaction of the flue gas and enhance the catalytic effect of the flue gas catalytic reaction.

[0195] In some embodiments, refer to Figure 18The inner wall of the first pipe section 22 is also provided with multiple second protrusions 224, and the oxygen supply agent 6 is disposed on the outer wall surface of the multiple second protrusions 224 and the inner wall surface of the first pipe section 22. The arrangement of the multiple second protrusions 224 makes the inner wall of the first pipe section 22 form a toothed structure, which increases the distribution area of ​​the oxygen supply agent 6, so that the oxygen supply agent 6 can uniformly supply oxygen into the first pipe, increase the contact area between flue gas and oxygen, thereby improving the photocatalytic reaction efficiency of flue gas and enhancing the catalytic effect of flue gas catalytic reaction.

[0196] In some embodiments, refer to Figure 18 The light-emitting device 5 includes a second light-emitting device 52, which has a light-emitting surface. The light-emitting surface of the second light-emitting device 52 is disposed opposite to a plurality of second protrusions 224. The fact that the light-emitting surface of the second light-emitting device 52 is disposed opposite to the plurality of second protrusions 224 allows the light energy emitted by the second light-emitting device 52 to directly irradiate the plurality of second protrusions 224, which can be understood as irradiating the oxygen supply agent 6 on the plurality of second protrusions 224, thereby ensuring that the oxygen supply agent 6 continuously supplies oxygen into the first pipe and further enhances the catalytic effect of the flue gas catalytic reaction.

[0197] In some embodiments, the first light-emitting device 51 and the second light-emitting device 52 may be installed at the connection between the first pipe segment 22 and the second pipe segment 23, respectively, to facilitate the installation, replacement, and maintenance of the first light-emitting device 51 and the second light-emitting device 52.

[0198] exist Figure 18 In the illustrated embodiment, the inner wall of the first pipe section 22 includes a first wall surface 221 and a second wall surface 222 disposed opposite to each other along a first direction. The catalyst 4 is disposed on the first wall surface 221, and the oxygen supply agent 6 is disposed on the second wall surface 222. This facilitates the placement of the catalyst 4 and the oxygen supply agent 6 on the inner wall of the flue 2. For example, in some embodiments, the catalyst 4 and the oxygen supply agent 6 can be placed using a spraying process, placing the catalyst 4 and the oxygen supply agent 6 on the two wall surfaces, which is convenient for operation. In addition, it can also ensure that the catalyst 4 and the oxygen supply agent 6 are uniformly coated on the inner wall of the flue 2.

[0199] In some embodiments, the first wall 221 is located above the second wall 222. Since oxygen and flue gas move upwards in the flue 2, placing the first wall 221 above the second wall 222, i.e., the catalyst 4 is located above the oxygen supply agent 6, enables sufficient contact between oxygen, flue gas and catalyst 4 above the flue 2, further improving the photocatalytic reaction efficiency of the flue gas and enhancing the catalytic effect of the flue gas catalytic reaction.

[0200] In the embodiments provided in this application, to facilitate real-time monitoring of the concentration of combustible gas in the flue 2 and the cabinet 300, combustible gas sensors are installed in both the flue 2 and the cabinet 300. When the concentration of combustible gas exceeds a threshold, a thermal runaway alarm for the battery pack 100 is issued in the energy storage cabinet 1000; when the concentration of combustible gas falls below the threshold, the thermal runaway alarm for the battery pack 100 in the energy storage cabinet 1000 is deactivated. This allows for rapid control of the concentration of combustible gas in the flue 2 and the cabinet 300, as well as the battery temperature, in the event of thermal runaway of the battery pack 100, effectively reducing the risk of thermal runaway and secondary hazards.

[0201] Figure 19 A control flowchart of an energy storage cabinet provided for an embodiment of this application. (Refer to...) Figure 19 When the energy storage cabinet is in operation, it will operate normally as long as the battery pack thermal runaway alarm does not occur.

[0202] In some embodiments, when a thermal runaway alarm occurs in the battery pack 100, the liquid cooling unit 500 operates at maximum cooling power to rapidly reduce the temperature of the battery pack 100 and decrease the degree of thermal runaway. The liquid cooling unit 500 stops when the cell temperature T < threshold T1 and the duration t of cell temperature T < the duration t0 of threshold T1. When the condition that cell temperature T < threshold T1 and the duration t of cell temperature T < the duration t0 of threshold T0 is not met is not satisfied, thermal runaway alarm degradation is achieved through three methods.

[0203] The first method involves energizing the fan 3 inside the flue 2. The fan 3 rotates to direct the combustible gas in the flue 2 out of the energy storage cabinet 1000 along the flue 2. When the combustible gas concentration C in the cabinet 300 and the flue 2 is less than C1, the fan 3 stops, the thermal runaway alarm of the battery pack 100 is downgraded, and personnel can approach the cabinet 300 for inspection and maintenance. When the combustible gas concentration C in the cabinet 300 and the flue 2 is not less than C1, the fan 3 continues to operate until the combustible gas concentration C in the cabinet 300 and the flue 2 is less than C1.

[0204] The second method involves energizing the light-emitting device 5 within the flue 2 to cause a reaction in the combustible gas within the flue 2, thereby reducing the concentration of combustible gas. When the combustible gas concentration C in the cabinet 300 and the flue 2 is less than C1, the light-emitting device 5 stops, the thermal runaway alarm of the battery pack 100 is downgraded, and personnel can approach the cabinet 300 for inspection and maintenance. When the combustible gas concentration C in the cabinet 300 and the flue 2 is not less than C1, the light-emitting device 5 continues to operate until the combustible gas concentration C in the cabinet 300 and the flue 2 is less than C1.

[0205] The third method involves simultaneously energizing the fan 3 and the light-emitting device 5 within the flue 2. The fan 3 rotates to direct the combustible gas within the flue 2 out of the energy storage cabinet 1000 along the flue 2. The energization of the light-emitting device 5 causes the combustible gas within the flue 2 to react, reducing its concentration. When the combustible gas concentration C in the cabinet 300 and the flue 2 is satisfied (C < C1), the fan 3 and the light-emitting device 5 stop, and the thermal runaway alarm of the battery pack 100 is downgraded. When the combustible gas concentration C in the cabinet 300 and the flue 2 is not satisfied (C < C1), the fan 3 and the light-emitting device 5 continue to operate until the combustible gas concentration C in the cabinet 300 and the flue 2 is satisfied (C < C1).

[0206] In other embodiments, when a thermal runaway alarm occurs in the battery pack 100, the above three methods can be directly used to achieve thermal runaway degradation. Those skilled in the art can choose according to actual needs.

[0207] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An energy storage cabinet, characterized in that, Includes at least one adsorption device and at least one battery pack; The battery pack includes a battery casing, an explosion-proof valve, and multiple battery cells, wherein the multiple battery cells are located inside the battery casing and the explosion-proof valve is disposed on the battery casing. The adsorption device includes a shell and an adsorption element for filtering gas. The shell includes a receiving cavity, an inlet, and an outlet. A first plate is disposed in the receiving cavity. The receiving cavity includes a first chamber and a second chamber located on different sides of the first plate. The inlet communicates with the first chamber, and the outlet communicates with the second chamber. A plurality of first through holes are formed on the first plate, and the plurality of first through holes communicate with the first chamber and the second chamber. The explosion-proof valve extends into the first chamber through the inlet at one end away from the plurality of battery cells, and the adsorption element is housed in the second chamber.

2. The energy storage cabinet according to claim 1, characterized in that, The adsorption device further includes a second plate, which is disposed between the outlet and the adsorption element. The second plate has a plurality of second through holes, which connect the outlet and the second chamber.

3. The energy storage cabinet according to claim 1 or 2, characterized in that, The energy storage cabinet also includes a flue, which includes an air outlet and multiple air inlets; There are multiple battery packs and multiple adsorption devices. The multiple adsorption devices are arranged on the side of the flue facing the multiple battery packs. The explosion-proof valves of the multiple battery packs extend into the first chamber of the multiple adsorption devices one by one. The outlets of the multiple adsorption devices are connected to the multiple air inlets one by one.

4. The energy storage cabinet according to claim 3, characterized in that, The plurality of battery packs and the plurality of adsorption devices are all spaced apart along a first direction; The flue includes a plurality of first pipe segments, each of which extends along a second direction. The plurality of first pipe segments are arranged side by side along the first direction. Two adjacent first pipe segments are connected at one end in the second direction through a second pipe segment. Two second pipe segments connected to the two ends of the same first pipe segment are staggered in the first direction. The first direction is perpendicular to the second direction.

5. The energy storage cabinet according to claim 4, characterized in that, The length of the first pipe segment in the second direction is greater than the length of the second pipe segment in the first direction. The plurality of air inlets are spaced apart along the first direction and are located in different first pipe segments.

6. The energy storage cabinet according to claim 5, characterized in that, A fan is installed inside the flue, the fan is located on the inner wall of the first pipe section, and the fan is located at one end of the first pipe section in the second direction.

7. The energy storage cabinet according to claim 6, characterized in that, Along the second direction, the air outlet of the fan is positioned toward the air inlet, and at least a portion of the air outlet is positioned opposite to the air inlet.

8. The energy storage cabinet according to any one of claims 4-7, characterized in that, The flue is also equipped with a catalyst and a light-emitting device for emitting light energy. The catalyst is disposed on the inner wall of the first pipe section, the light-emitting device is used to provide light energy into the flue, and the catalyst is used to catalyze the gas reaction in the flue under the action of light energy.

9. The energy storage cabinet according to claim 8, characterized in that, The inner wall of the first pipe section is also provided with a plurality of first protrusions, and the catalyst is disposed on the outer wall surface of the plurality of first protrusions; The light-emitting device includes a first light-emitting device, which has a light-emitting surface, and the light-emitting surface of the first light-emitting device is disposed opposite to the plurality of first protrusions.

10. The energy storage cabinet according to claim 8 or 9, characterized in that, An oxygen supply agent is also provided inside the flue. The oxygen supply agent is disposed on the inner wall of the first pipe section and is used to supply oxygen into the flue.

11. The energy storage cabinet according to claim 10, characterized in that, The inner wall of the first pipe section includes a first wall surface and a second wall surface disposed opposite to each other, the catalyst is disposed on the first wall surface, and the oxygen supply agent is disposed on the second wall surface.

12. The energy storage cabinet according to claim 10 or 11, characterized in that, The inner wall of the first pipe section is also provided with a plurality of second protrusions, and the oxygen supply agent is disposed on the outer wall surface of the plurality of second protrusions; The light-emitting device includes a second light-emitting device, which has a light-emitting surface, and the light-emitting surface of the second light-emitting device is disposed opposite to the plurality of second protrusions.

13. The energy storage cabinet according to any one of claims 1-12, characterized in that, The housing includes a first part and a second part, the first chamber is located in the first part, the second chamber is located in the second part, and the inlet is located on the end face of the first part opposite to the second part; The battery casing has a mounting hole and a connector on the surface facing the inlet. The explosion-proof valve is housed in the mounting hole. The connector is arranged around the outer periphery of the mounting hole, and the end of the connector facing away from the mounting hole has an opening. The first part is inserted into the connector through the opening, and the end face of the first part facing away from the second part is connected to the battery case.

14. The energy storage cabinet according to claim 13, characterized in that, The outer diameter of the first portion gradually increases in the direction from the inlet to the first plate.

15. A flue gas treatment device, characterized in that, include: A flue, the flue including an air outlet and a plurality of air inlets, the plurality of air inlets being spaced apart along a first direction; Multiple adsorption devices are disposed in the flue. Each adsorption device includes a housing and an adsorption element for filtering gas. The housing includes a receiving cavity, an outlet, and an inlet through which the explosion-proof valve of the battery pack passes. A first plate is disposed in the receiving cavity, which includes a first chamber and a second chamber located on different sides of the first plate. The inlet communicates with the first chamber, and the outlet communicates with the second chamber. The adsorption element is housed in the second chamber. Multiple first through holes are formed on the first plate, which communicate with the first chamber and the second chamber. The plurality of air inlets and the outlets of the plurality of adsorption devices are connected one-to-one.

16. The flue gas treatment apparatus according to claim 15, characterized in that, The adsorption device further includes a second plate, which is disposed between the outlet and the adsorption element. The second plate has a plurality of second through holes, which connect the outlet and the second chamber.

17. The flue gas treatment apparatus according to claim 15 or 16, characterized in that, The plurality of adsorption devices are arranged at intervals along the first direction; The flue includes a plurality of first pipe segments, each of which extends along a second direction. The plurality of first pipe segments are arranged side by side along a first direction. Two adjacent first pipe segments are connected at one end in the second direction through a second pipe segment. Two second pipe segments connected at both ends of the same first pipe segment are staggered in the first direction. The first direction is perpendicular to the second direction. The length of the first pipe segment in the second direction is greater than the length of the second pipe segment in the first direction. The plurality of air inlets are spaced apart along the first direction and are located in different first pipe segments.

18. The flue gas treatment apparatus according to claim 17, characterized in that, A fan is installed inside the flue, the fan is located on the inner wall of the first pipe section, and the fan is located at one end of the first pipe section in the second direction.

19. The flue gas treatment apparatus according to claim 17 or 18, characterized in that, The flue is also equipped with a catalyst and a light-emitting device for emitting light energy. The catalyst is disposed on the inner wall of the first pipe section, the light-emitting device is used to provide light energy into the flue, and the catalyst is used to catalyze the gas reaction in the flue under the action of light energy.

20. The flue gas treatment apparatus according to claim 19, characterized in that, An oxygen supply agent is also provided inside the flue. The oxygen supply agent is disposed on the inner wall of the first pipe section and is used to supply oxygen into the flue.

21. The flue gas treatment apparatus according to claim 20, characterized in that, The inner wall of the first pipe section includes a first wall surface and a second wall surface disposed opposite to each other, the catalyst is disposed on the first wall surface, and the oxygen supply agent is disposed on the second wall surface.

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