Battery device and energy storage system

Abstract

The utility model provides a battery device and an energy storage system, and belongs to the technical field of energy storage. The battery device comprises at least one battery monomer and a flue gas treatment module, at least one battery monomer comprises a first shell and a battery cell, the battery cell is positioned in the first shell, and an anti-explosion valve is arranged on the first shell; the flue gas treatment module comprises a smoke abatement assembly; the smoke abatement assembly comprises a second shell, a photocatalyst, an electrodeless ultraviolet lamp and a microwave generator; the photocatalyst, the electrodeless ultraviolet lamp and the microwave generator are located in the second shell, one end of the second shell is connected with the anti-explosion valve, and the other end of the second shell is provided with an exhaust port. According to the battery device disclosed by the embodiment of the invention, the smoke abatement assembly in the smoke treatment module can photolyze or oxidize combustible gas in the smoke to generate non-toxic water and carbon dioxide, so that the possibility that a large amount of combustible gas is gathered is reduced, and the burning explosion risk of the combustible gas is reduced. And open fire cannot occur in the photolysis or oxidation process, so that the potential safety hazard of the battery device is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of energy storage, particularly to battery device and energy storage system. BACKGROUND

[0002] With the development of electrochemical energy storage industry, lithium ion batteries are gradually widely used.

[0003] However, lithium ion batteries have the risk of thermal runaway, and a large amount of flammable gas such as hydrogen, carbon monoxide and methane will be generated during the thermal runaway process.

[0004] In related technologies, these flammable gases are usually treated by adsorption or combustion consumption of adsorbents, but the adsorption effect of adsorbents is greatly affected by temperature and pressure, and the adsorption performance is unstable, and combustion consumption will produce open flames, which has a great safety hazard. SUMMARY

[0005] The utility model provides battery device and energy storage system, can solve the technical problem existing in related technology, specifically speaking, technical scheme is as follows.

[0006] On the one hand, a battery device is provided, which comprises at least one battery monomer and a flue gas treatment module; the at least one battery monomer comprises a first shell and a battery core, the battery core is located in the first shell, and an explosion-proof valve is arranged on the first shell; the flue gas treatment module comprises a smoke elimination assembly, the smoke elimination assembly comprises a second shell, a photocatalyst, an electrodeless ultraviolet lamp and a microwave generator; the photocatalyst, the electrodeless ultraviolet lamp and the microwave generator are located in the second shell respectively, one end of the second shell is connected with the explosion-proof valve, and the other end is provided with an exhaust port.

[0007] The battery device of the embodiment has a flue gas treatment module, the second shell of the smoke elimination assembly in the flue gas treatment module is connected with the explosion-proof valve of the battery monomer, once the battery monomer appears thermal runaway, a large amount of flue gas generated in the battery monomer will enter the second shell of the smoke elimination assembly after breaking through the explosion-proof valve, the microwave generator in the second shell can emit microwaves with rated power, the microwaves can excite the electrodeless ultraviolet lamp, so that the electrodeless ultraviolet lamp emits ultraviolet light, the irradiation of the ultraviolet light can make the photocatalyst have a high catalytic effect on the photolysis or oxidation of the flammable gas in the flue gas, produce non-toxic water and carbon dioxide, and discharge from the exhaust port, thereby reducing the possibility of a large amount of flammable gas gathering in the surrounding space of the battery monomer and reducing the risk of combustion and explosion of the flammable gas. Moreover, no open flame will appear in the process of photolysis or oxidation of the flammable gas by the photocatalyst, further reducing the safety hazard of the battery device. The battery device of the embodiment utilizes the pressure generated by the thermal runaway of the battery monomer to drive the flue gas to flow in the smoke elimination assembly, without the need to arrange a fan or other driving device, which is conducive to reducing the volume and cost of the flue gas treatment module.

[0008] In some possible implementations, the battery cells in the battery device, also known as monomer cells, can form a complete battery pack (or battery group) through series, parallel or series-parallel combination of a plurality of battery cells. Exemplarily, when the battery device is a battery pack or battery group formed by a plurality of battery cells, each battery cell can be connected to an independent flue gas treatment module, or a plurality of battery cells can be connected to a common flue gas treatment module.

[0009] In some possible implementations, the photocatalyst is a modified substance such as titanium dioxide or molybdenum dioxide.

[0010] In some possible implementations, the electrodeless ultraviolet lamp and the microwave generator are integrated into one component to form a microwave electrodeless ultraviolet lamp.

[0011] In some embodiments, the photocatalyst is carried on a carrier, and the carrier is a flat plate and is arranged perpendicularly to the exhaust direction in the second shell.

[0012] Through the above arrangement, the carrier (or carrier) serves as the skeleton of the photocatalyst, which can provide a high specific surface area support structure, so that the photocatalyst can be highly dispersed on the surface of the carrier. In addition, the strength of the photocatalyst can be increased. The photocatalyst is arranged on the carrier, and the carrier is arranged in the second shell, so that the photocatalyst can realize photolysis in the chamber. Moreover, the carrier is a flat plate and is arranged perpendicularly to the exhaust direction. When the flue gas flows along the exhaust direction, it must flow through the carrier, and the contact area between the photocatalyst and the flue gas is large, which is beneficial to improve the catalytic effect.

[0013] In some possible implementations, the carrier is a foamed metal, a honeycomb activated carbon, a honeycomb ceramic, or the like.

[0014] In some possible implementations, the thickness of the carrier along the exhaust direction is 10-20 mm.

[0015] In some embodiments, the number of the carrier and the number of the electrodeless ultraviolet lamp are both plural, and at least one electrodeless ultraviolet lamp is arranged between adjacent two carriers.

[0016] Through the above arrangement, at least one electrodeless ultraviolet lamp is arranged between each two carriers, so that each carrier can obtain sufficient ultraviolet irradiation, and the catalytic effect of the photocatalyst is good.

[0017] In some possible implementations, the distance between adjacent two carriers along the exhaust direction is 100-200 mm.

[0018] In some embodiments, the second shell is provided with a plurality of fixing supports on the side wall, and the photocatalyst, the electrodeless ultraviolet lamp and the microwave generator are respectively fixed by the fixing supports.

[0019] Through the above arrangement, the carrier carrying the photocatalyst, the electrodeless ultraviolet lamp and the microwave generator can be fixed by the plurality of fixing supports arranged on the side wall of the second shell, which is simple in structure, convenient to operate and convenient to replace and maintain the consumables.

[0020] In some possible implementations, the connection mode of the fixing supports with the carrier, the electrodeless ultraviolet lamp and the microwave generator includes, but is not limited to, clamping connection, screw connection or adhesive connection.

[0021] In some embodiments, the inner wall of the second shell has a reflective surface capable of reflecting the ultraviolet light emitted by the electrodeless ultraviolet lamp and / or the microwaves emitted by the microwave generator.

[0022] Through the above arrangement, the microwaves emitted by the microwave generator and / or the ultraviolet light emitted by the electrodeless ultraviolet lamp can be reflected inward on one hand, thereby improving the use efficiency of the microwaves and the ultraviolet light, and on the other hand, the microwaves and the ultraviolet light can be prevented from leaking outward, thereby preventing damage to other structures of the battery device.

[0023] In some possible implementations, the reflective surface is a metal coating, a dielectric-metal composite coating, a nano-structured coating or the like.

[0024] In some embodiments, the flue gas treatment module further comprises a flue connected between the explosion-proof valve and the second shell.

[0025] The battery device of the present embodiment can make the relative positions of the flue gas treatment module and the battery monomer more flexible by arranging the flue between the explosion-proof valve of the battery monomer and the second shell, so that the flue gas treatment module can be deployed integrally with the battery monomer or separately, which is beneficial to improve the adaptability range of the battery device.

[0026] In some embodiments, the flue gas treatment module further comprises an adsorption component located in the flue or at the end of the second shell facing the flue.

[0027] By the above arrangement, the flue gas treatment module of the embodiment can arrange the adsorption component in the flue or at the end of the second shell close to the flue, the adsorption component is arranged downstream of the explosion-proof valve, and the photocatalyst is located downstream of the adsorption component. In this way, the flue gas discharged from the explosion-proof valve will first pass through the adsorption component before contacting the photocatalyst. The adsorption component can adsorb solid particles (such as carbon powder particles, diaphragm fragments, electrode particles, etc.) and electrolyte droplets in the flue gas, so that the filtered flue gas contacts the photocatalyst, reducing the influence of solid particles and impurities on the catalytic reaction, and facilitating the stable performance of the catalytic reaction.

[0028] Exemplarily, the adsorption component has strong adsorption capacity, for example, the adsorption component can be activated carbon, molecular sieve or other substances with strong adsorption capacity, which can filter the flue gas.

[0029] In some embodiments, the flue gas treatment module further comprises a detection unit, a control unit and a power supply unit, the detection unit is located in the flue, the detection unit is electrically connected with the control unit, the control unit is electrically connected with the power supply unit, and the power supply unit is electrically connected with the electrodeless ultraviolet lamp and the microwave generator.

[0030] In the embodiment, in order to ensure that the smoke elimination assembly can respond immediately after the battery monomer thermal runaway, the microwave generator and the ultraviolet lamp are started to photolyze or oxidize the flue gas, a detection unit is arranged in the flue. Once the flue gas in the battery monomer breaks through the explosion-proof valve and enters the flue, the detection unit can send a signal of battery monomer thermal runaway to the control unit when the parameters such as temperature, light or gas concentration in the flue exceed the threshold value. The control unit can input a power supply signal to the power supply unit according to the signal, and the power supply unit can supply power to the microwave generator and the electrodeless ultraviolet lamp according to the power supply signal, so that the microwave generator and the electrodeless ultraviolet lamp start to photolyze and oxidize the flue gas. The flue gas treatment module can realize automatic control without manual intervention, has fast response speed and reliable performance, and is beneficial to improve the safety of the battery device.

[0031] In some possible implementations, the power supply unit can not be directly connected with the control unit, and the power supply unit is electrically connected with the microwave generator and the electrodeless ultraviolet lamp through a switching element. The switching unit is electrically connected with the control unit, and the control unit can output a switching signal to realize the start control of the microwave generator and the electrodeless ultraviolet lamp.

[0032] In some embodiments, the second shell is connected with the first shell, and the second shell is located at the top or bottom of the first shell. In the battery device of the embodiment, the second shell can be connected at the top or bottom of the first shell to realize the integrated deployment of the battery monomer and the flue gas treatment module. Exemplarily, the battery device can be in the form of a battery pack or a battery cabinet.

[0033] In some possible implementation manners, the second shell is consistent in size with the top or bottom of the first shell and can be fixed by screwing or tenon and mortise connection or the like.

[0034] In some embodiments, the second shell is separated from the first shell. In this embodiment, the second shell is not directly connected to the first shell, that is, the flue gas treatment module and the battery monomer can be deployed separately, and the two can be connected by a flue. This embodiment is suitable for the scenario of a data center, and the flue gas treatment module and the battery monomer are deployed separately.

[0035] In another aspect, a power storage system is provided, comprising the battery device and a battery manager.

[0036] The battery manager is electrically connected to at least part of the battery monomers in the battery device.

[0037] The power storage system of the embodiment uses the battery device provided by the utility model, has all the beneficial technical effects of the utility model. The smoke removal assembly in the flue gas treatment module in the battery device can use photocatalysis to photolyze or oxidize the combustible gas in the flue gas into non-toxic water and carbon dioxide, reducing the possibility of a large amount of combustible gas gathering in the surrounding space of the battery monomer, reducing the risk of combustion and explosion of the combustible gas, and further reducing the safety hazards of the battery device. Thanks to the absence of driving devices such as fans in the battery device, the power storage system can also achieve a reduction in volume and cost.

[0038] In some possible implementation manners, the battery manager can constitute all or part of a battery management system (BMS), and the battery manager can monitor the state of the battery device, improve the utilization rate of the battery device, prevent overcharging and overdischarging of the battery device, and prolong the service life of the battery device. The battery manager is electrically connected to at least part of the battery monomers, and the battery manager is used to control the battery monomers electrically connected thereto. In one example, the battery manager can be arranged in the first shell. In other examples, the battery manager can also be arranged outside the first shell, and the present application does not make specific limitations thereto. In other examples, the battery manager can also be other structures for controlling the battery monomers. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A structural schematic diagram of the battery device provided by the embodiment of the utility model is shown in the figure.

[0040] Figure 2 is Figure 1 A structural exploded view of the battery device shown in the figure.

[0041] Figure 3 is Figure 1 a structural sectional view of the battery device shown in FIG.

[0042] Figure 4 is Figure 1 a structural exploded view of the battery device in a sectional state shown in FIG.

[0043] Figure 5 is a relative position schematic view of the carrier, the electrodeless ultraviolet lamp and the microwave generator provided by the embodiment of the present application;

[0044] Figure 6 is a structural schematic view of the smoke elimination assembly provided by the embodiment of the present application;

[0045] Figure 7 is a connection schematic view of the detection unit, the control unit and the power supply unit provided by the embodiment of the present application;

[0046] Figure 8 is a structural schematic view of the battery device provided by another embodiment of the present application;

[0047] Figure 9 is a structural schematic view of the battery device provided by another embodiment of the present application;

[0048] Figure 10 is a structural schematic view of the battery device provided by another embodiment of the present application;

[0049] Figure 11 is a structural schematic view of the energy storage system provided by the embodiment of the present application.

[0050] The reference signs respectively represent:

[0051] 100, battery device; 200, battery manager;

[0052] 1, battery monomer;

[0053] 11, first shell; 111, explosion-proof valve; 12, battery cell;

[0054] 2, flue gas treatment module;

[0055] 21, smoke elimination assembly; 211, second shell; 2111, exhaust port; 2112, fixing support; 2213, reflecting surface; 212, photocatalyst; 213, electrodeless ultraviolet lamp; 214, microwave generator; 215, carrier; 22, flue; 23, adsorption component; 24, detection unit; 25, control unit; 26, power supply unit. DETAILED DESCRIPTION

[0056] In the description of the embodiments of the utility model, it is understood that the terms "upper", "lower", "inner", "outer", "length", "width", "thickness" and the like indicate the orientation or positional relationship, which is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and the orientation may change when the product is placed in different attitudes, therefore, it cannot be understood as a limitation on the embodiments of the utility model.

[0057] In the related art, there are mainly two schemes for eliminating lithium ion battery thermal runaway smoke.

[0058] Scheme one, adsorption treatment: a gas adsorbent is arranged at the lithium battery explosion-proof device, and combustible gas is adsorbed by the adsorbent. When gas is generated inside the lithium battery, the smoke enters the exhaust pipe through the pressure relief valve and is absorbed by the internal gas adsorbent.

[0059] Scheme two, combustion treatment: a combustion device is arranged outside the lithium battery explosion-proof device, and the smoke is ignited by the combustion device to consume the combustible components in the smoke and improve safety.

[0060] However, the adsorption effect of the gas adsorbent is related to temperature and pressure, and the higher the temperature, the worse the adsorption effect, for example, the adsorption temperature of activated carbon on gas substances is below 50 DEG C, and the adsorption effect will decrease obviously when the temperature exceeds 50 DEG C. The temperature of the gas spouted by the lithium battery during thermal runaway is usually higher than 100 DEG C, so the adsorption effect of scheme one on combustible gas is limited. In addition, the smoke spouted by the battery explosion valve contains a large amount of combustible gas, although combustion can consume it, but it is inevitable that there will be an open flame, so scheme two has certain safety risks.

[0061] In view of the technical problems existing in the related art, on the one hand, in combination with Figures 1 to 4 As shown in the figure, the utility model embodiment provides a kind of battery device 100, and battery device 100 includes: at least one battery monomer 1 and smoke treatment module 2.

[0062] At least one battery monomer 1 includes first shell 11 and electric core 12, and electric core 12 is located in first shell 11, and explosion valve 111 is arranged on first shell 11. Smoke treatment module 2 includes smoke elimination component 21, and smoke elimination component 21 includes second shell 211, photocatalyst 212, electrodeless ultraviolet lamp 213 and microwave generator 214;Photocatalyst 212, electrodeless ultraviolet lamp 213 and microwave generator 214 are located in second shell 211 respectively, one end of second shell 211 is connected with explosion valve 111, and the other end is provided with exhaust port 2111.

[0063] The battery device 100 of the embodiment has a smoke treatment module 2, and the second shell 211 of the smoke elimination assembly 21 in the smoke treatment module 2 is connected with the explosion-proof valve 111 of the battery monomer 1. Once the battery monomer 1 has thermal runaway, a large amount of smoke generated inside will break through the explosion-proof valve 111 and enter the second shell 211 of the smoke elimination assembly 21. The microwave generator 214 in the second shell 211 can emit microwaves with rated power, which can excite the electrodeless ultraviolet lamp 213 to emit ultraviolet light. The irradiation of the ultraviolet light can make the photocatalyst 212 have a high catalytic effect to photolyze or oxidize the combustible gas in the smoke, and produce nontoxic water and carbon dioxide, which are discharged from the exhaust port. Thus, the possibility of a large amount of combustible gas gathering in the space around the battery monomer 1 is reduced, and the risk of combustion and explosion of the combustible gas is reduced.

[0064] Moreover, no open flame occurs in the photolysis or oxidation process of the combustible gas by the photocatalyst 212, further reducing the safety hazards of the battery device 100.

[0065] The battery device 100 of the embodiment drives the smoke to flow in the smoke elimination assembly 21 by using the pressure generated by the thermal runaway of the battery monomer 1, without the need to arrange a fan or other driving device, which is conducive to reducing the volume and cost of the smoke treatment module 2.

[0066] In some possible implementations, the battery monomer 1 in the battery device 100, which can also be referred to as a monomer battery, can form a complete battery pack (or battery group) through series connection, parallel connection, or series-parallel connection. Figure 9 and Figure 10 as shown.

[0067] In some possible implementations, the photocatalyst 212 is a modified substance such as titanium dioxide or molybdenum dioxide. The photocatalyst 212 can promote chemical reactions under the irradiation of ultraviolet light, and the chemical properties and quality of the photocatalyst 212 remain basically unchanged before and after the reaction. The basic principle is the generation and separation of photo-generated carriers. When the photocatalyst 212 absorbs photon energy, the electrons in the valence band will be excited to jump to the conduction band, thereby leaving a hole in the valence band. These photo-generated carriers (electrons and holes) have strong oxidation-reduction ability, and they can have oxidation-reduction reactions with substances adsorbed on the surface of the photocatalyst 212.

[0068] For example, when the titanium dioxide catalyst absorbs ultraviolet light, electrons in the valence band jump to the conduction band, generating electron-hole pairs. The holes can react with water molecules adsorbed on the surface of the titanium dioxide to generate hydroxyl radicals, and the electrons can react with adsorbed oxygen molecules to generate superoxide anion radicals. These radicals have strong oxidizing properties and can completely degrade almost all organic matter in flue gas into water and carbon dioxide, etc. Inorganic pollutants are oxidized or reduced to harmless substances, and have the advantages of being inexpensive, non-toxic, stable, and reusable, and high photocatalytic activity.

[0069] In some possible implementations, the electrodeless ultraviolet lamp 213 includes a lamp tube, which is a key component for generating ultraviolet light and is generally made of quartz glass and filled with a specific gas mixture such as mercury and argon. Under the action of a microwave electromagnetic field, the gas is ionized and excited to generate ultraviolet radiation.

[0070] The microwave generator 214 is a core component for generating microwaves and generally uses a magnetron or other microwave generating device to provide energy for ionization and excitation of the gas in the electrodeless ultraviolet lamp 213.

[0071] The working process of the microwave generator 214 and the electrodeless ultraviolet lamp 213 is that the microwave generated by the microwave generator 214 forms a high-frequency electromagnetic field in the electrodeless ultraviolet lamp 213, and the gas in the electrodeless ultraviolet lamp 213 is ionized and excited under the action of the high-frequency electromagnetic field, so that the mercury atoms transition from the ground state to the excited state. When the mercury atoms return to the ground state from the excited state, ultraviolet light is released. At the same time, the presence of inert gas helps to stabilize the plasma environment and improve the generation efficiency and stability of the ultraviolet light.

[0072] The smoke removal assembly 21 of the present embodiment uses a microwave excitation method for the electrodeless ultraviolet lamp 213, has high energy conversion efficiency, can generate high-intensity ultraviolet light at a lower input power, has higher luminous efficiency than traditional ultraviolet lamps, and can effectively reduce energy consumption. The electrodeless ultraviolet lamp 213 can emit ultraviolet light of specific wavelengths, such as 184.9 nm, 185 nm, 193 nm, and 254 nm. These wavelengths of ultraviolet light have unique advantages in photocatalysis and other aspects.

[0073] In some possible implementations, the electrodeless ultraviolet lamp 213 and the microwave generator 214 are integrated into one component to form a microwave electrodeless ultraviolet lamp structure.

[0074] In combination Figure 5 As shown in FIG. 2, in some embodiments, the photocatalyst 212 is carried on the carrier 215, and the carrier 215 is a flat plate and is arranged perpendicular to the exhaust direction in the second shell 211.

[0075] With the above arrangement, the carrier 215 (or called support) as the skeleton of the photocatalyst 212 can provide a high specific surface area support structure, so that the photocatalyst 212 can be highly dispersed on the surface of the carrier 215. In addition, the strength of the photocatalyst 212 can also be increased. By arranging the photocatalyst 212 on the carrier 215 and arranging the carrier 215 in the second shell 211, the photocatalyst 212 can be facilitated to achieve photolysis in the second shell 211. Moreover, the carrier 215 is a flat piece and is arranged perpendicular to the exhaust direction. When the flue gas flows along the exhaust direction, it must flow through the carrier 215, so the contact area between the photocatalyst 212 and the flue gas is large, which is conducive to improving the catalytic effect.

[0076] Exemplarily, the number of carriers 215 is multiple. The multiple carriers 215 are arranged in the second shell 211 along the exhaust direction of the second shell 211, so that the flue gas needs to flow through the multiple carriers 215 during the flow process and can contact the photocatalysts 212 in different carriers 215, which is conducive to improving the catalytic smoke elimination effect.

[0077] In some possible implementations, the carrier 215 is a foamed metal, a honeycomb activated carbon, a honeycomb ceramic, or the like.

[0078] The foamed metal is a new type of functional material with a large number of pores in the internal structure. The porosity is usually more than 90%, and almost all the pores are connected. The pore diameter can reach millimeters, the specific surface area of the pores is large, the material has a small volume weight, the fluid permeability is strong, the thermal conductivity and the electrical conductivity are low, and the like. Due to the above characteristics, the foamed metal is suitable to be used as the carrier 215 of the photocatalyst 212.

[0079] The honeycomb activated carbon has the advantages of large specific area, microporous structure, and high adsorption capacity. Moreover, the honeycomb activated carbon itself can adsorb flue gas. When the flue gas contacts the porous activated carbon with a large surface, the pollutants in the flue gas are adsorbed and decomposed, thereby playing a purification role. Using the honeycomb activated carbon as the photocatalyst 212 can better reflect the characteristics of the honeycomb activated carbon, so that the flue gas can fully contact the catalyst, and the catalytic efficiency is high.

[0080] The honeycomb ceramic has a honeycomb-shaped porous structure composed of a large number of parallel and regular pores. The pores are independent of each other and connected to each other, and the shape is regular and the pore diameter is uniform. The large number of pores and the thin wall structure greatly increase the specific surface area, so that more photocatalysts 212 can be loaded, and a rich place is provided for the catalytic reaction, thereby improving the catalytic efficiency. Moreover, the honeycomb ceramic can withstand high temperature and still maintain structural stability in a high-temperature environment.

[0081] In some other possible implementations, the thickness of the carrier 215 along the exhaust direction is 10-20 mm. For example, the thickness of the carrier 215 along the exhaust direction is 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, or 20 mm.

[0082] In some other possible implementations, the area of ​​the carrier 215 perpendicular to the exhaust direction is close to the cross-sectional area of ​​the second housing 211, so that the carrier 215 can block the exhaust path inside the second housing 211, allowing the flue gas to flow through the carrier 215 and come into contact with the photocatalyst 212, thereby improving the photocatalytic efficiency.

[0083] Combination Figure 3 and Figure 4 As shown, in some embodiments, there are multiple carriers 215 and multiple electrodeless ultraviolet lamps 213, and at least one electrodeless ultraviolet lamp 213 is arranged between two adjacent carriers 215.

[0084] With the above arrangement, at least one electrodeless ultraviolet lamp 213 is placed between every two carriers 215, which can ensure that each carrier 215 can obtain sufficient ultraviolet light irradiation, and the photocatalyst 212 has a better catalytic effect.

[0085] In some possible implementations, the distance between two adjacent carriers 215 along the exhaust direction is 100-200 mm. For example, the distance between two adjacent carriers 215 along the exhaust direction is 100 mm, 120 mm, 140 mm, 160 mm, 180 mm, or 200 mm.

[0086] In some possible implementations, multiple carriers 215 and multiple electrodeless ultraviolet lamps 213 are arranged at intervals along the exhaust direction within the second housing 211, while the microwave generator 214 can be arranged on the side wall of the second housing 211 parallel to the exhaust direction. All the electrodeless ultraviolet lamps 213 are located within the microwave radiation range of the microwave generator 214, thereby ensuring that all the microwave ultraviolet lamps receive microwaves from the microwave generator 214 and are excited to emit ultraviolet light.

[0087] Combination Figure 3 and Figure 4 As shown, in some embodiments, the second housing 211 has multiple fixing brackets 2112 on its side wall, and the photocatalyst 212, the electrodeless ultraviolet lamp 213 and the microwave generator 214 are respectively installed and fixed by the fixing brackets 2112.

[0088] With the above arrangement, the carrier 215 carrying the photocatalyst 212, the electrodeless ultraviolet lamp 213 and the microwave generator 214 can be installed and fixed by multiple fixed brackets 2112 arranged on the side wall of the second housing 211. The structure is simple, the operation is convenient, and the replacement and maintenance of consumables are convenient.

[0089] In some possible implementation manners, the connection mode of the fixing support 2112 with the carrier 215, the electrodeless ultraviolet lamp 213 and the microwave generator 214 includes, but is not limited to, a clamping connection, a screw connection or an adhesive connection.

[0090] In combination Figure 6 As shown in the drawings, in some embodiments, the inner wall of the second shell 211 has a reflective surface 2213 capable of reflecting the ultraviolet light emitted by the electrodeless ultraviolet lamp 213 and / or the microwave emitted by the microwave generator 214.

[0091] Through the above arrangement, by arranging the reflective surface 2213 on the inner wall of the second shell 211, on the one hand, the microwave emitted by the microwave generator 214 and / or the ultraviolet light emitted by the electrodeless ultraviolet lamp 213 can be reflected inward, improving the use efficiency of the microwave and the ultraviolet light, and on the other hand, it can also prevent the microwave and the ultraviolet light from leaking outward, causing damage to other structures of the battery device 100.

[0092] In some possible implementation manners, the reflective surface 2213 is a metal coating, a dielectric-metal composite coating, a nano-structured coating and the like. Among them, the metal coating can be an aluminum coating. From a microscopic point of view, there are a large number of free electrons inside the metal. When the microwave irradiates the surface of the metal coating, the electric field of the microwave will make these free electrons oscillate. According to the law of electromagnetic induction, these oscillating electrons will generate an induced electric field opposite to the direction of the incident microwave electric field, thereby reflecting the microwave back. For ultraviolet light, the free electrons in the metal can also interact with the electric field of the ultraviolet light. When the photon energy of the ultraviolet light acts on the metal surface, the electron will absorb the photon energy and jump, and then quickly return to the original state and emit a photon, which causes the ultraviolet light to be reflected. The nano-structured coating can reflect microwaves and ultraviolet light by designing nano-scale structures.

[0093] In combination Figures 1 to 4 As shown in the drawings, in some embodiments, the smoke treatment module 2 further includes a flue 22 connected between the explosion-proof valve 111 and the second shell 211.

[0094] The battery device 100 of the present embodiment, by arranging the flue 22 between the explosion-proof valve 111 of the battery monomer 1 and the second shell 211, makes the relative position of the smoke treatment module 2 and the battery monomer 1 more flexible, and the smoke treatment module 2 can be deployed integrally with the battery monomer 1 or separately, which is beneficial to improve the adaptability range of the battery device 100.

[0095] In combination Figure 3 And Figure 4As shown in some embodiments, the flue gas treatment module 2 further comprises an adsorption component 23, which is located in the flue 22 or at the end of the second shell 211 towards the flue 22.

[0096] Through the above arrangement, the flue gas treatment module 2 of the present embodiment can arrange the adsorption component 23 in the flue 22 or at the end of the second shell 211 close to the flue 22, the adsorption component 23 is arranged downstream of the explosion-proof valve 111, and the photocatalyst 212 is located downstream of the adsorption component 23, so that the flue gas discharged from the explosion-proof valve 111 will first pass through the adsorption component 23 before contacting the photocatalyst 212, the adsorption component 23 can adsorb solid particles (such as carbon powder particles, diaphragm fragments, electrode particles, etc.) and electrolyte droplets in the flue gas, so that the filtered flue gas contacts the photocatalyst 212, which reduces the influence of solid particles and impurities on the catalytic reaction, and facilitates the stable performance of the catalytic reaction.

[0097] Exemplarily, the adsorption component 23 has strong adsorption capacity, for example, the adsorption component 23 can be activated carbon, molecular sieve or other substances with strong adsorption capacity, which can filter the flue gas.

[0098] In combination with Figure 3 , Figure 4 and Figure 7 As shown in some embodiments, the flue gas treatment module 2 further comprises a detection unit 24, a control unit 25 and a power supply unit 26, the detection unit 24 is located in the flue 22, the detection unit 24 is electrically connected with the control unit 25, the control unit 25 is electrically connected with the power supply unit 26, and the power supply unit 26 is electrically connected with the electrodeless ultraviolet lamp 213 and the microwave generator 214.

[0099] In the present embodiment, in order to ensure that the smoke elimination assembly 21 can respond immediately after the battery monomer 1 is in thermal runaway, the microwave generator 214 and the ultraviolet lamp are started to photolyze or oxidize the flue gas, and a detection unit 24 is arranged in the flue 22, once the flue gas in the battery monomer 1 breaks through the explosion-proof valve 111 and enters the flue 22, the detection unit 24 can send a signal of the battery monomer 1 in thermal runaway to the control unit 25 when detecting that the temperature, light or gas concentration in the flue 22 exceeds the threshold value, the control unit 25 can input a power supply signal to the power supply unit 26 according to the signal, and the power supply unit 26 can supply power to the microwave generator 214 and the electrodeless ultraviolet lamp 213 according to the power supply signal, so that the microwave generator 214 and the electrodeless ultraviolet lamp 213 start to photolyze and oxidize the flue gas. Thus, the flue gas treatment module 2 can realize automatic control without manual intervention, has fast response speed and reliable performance, and is conducive to improving the safety of the battery device 100.

[0100] In some possible implementation manners, the power supply unit 26 can not be directly connected with the control unit 25, and the power supply unit 26 is electrically connected with the microwave generator 214 and the electrodeless ultraviolet lamp 213 through a switching element, the switching unit is electrically connected with the control unit 25, and the control unit 25 can output a switching signal to realize start control of the microwave generator 214 and the electrodeless ultraviolet lamp 213.

[0101] In combination with FIGS. 1, 2 and 3, Figure 1 , Figure 8 and Figure 9 In some embodiments, the second shell 211 is connected with the first shell 11, and the second shell 211 is located at the top or bottom of the first shell 11. In the battery device 100 of the embodiment, the second shell 211 can be connected at the top or bottom of the first shell 11 to realize integrated deployment of the battery monomer 1 and the flue gas treatment module 2. Exemplarily, the battery device 100 can be in the form of a battery pack or a battery cabinet.

[0102] In some possible implementation manners, the second shell 211 is consistent in size with the top or bottom of the first shell 11, and can be fixed through a connection mode such as a screw or a mortise and tenon.

[0103] In combination with FIGS. 1, 2 and 3, Figure 10 In some embodiments, the second shell 211 is separated from the first shell 11. In the embodiment, the second shell 211 is not directly connected with the first shell 11, that is, the flue gas treatment module 2 and the battery monomer 1 can be deployed in a separated manner, and the two can be connected through the flue 22. The embodiment is suitable for a data center scenario, in which the flue gas treatment module 2 and the battery monomer 1 are deployed in a separated manner.

[0104] On the other hand, in combination with FIGS. 1, 2 and 3, Figure 11 The utility model embodiment provides a kind of energy storage system, energy storage system includes: the battery device 100 of the utility model, and battery manager 200;Battery manager 200 is electrically connected with at least part of battery monomer 1 in battery device 100.

[0105] The energy storage system of the embodiment uses the battery device 100 provided by the utility model, has all beneficial technical effects of the utility model. By using the smoke elimination assembly 21 in the flue gas treatment module 2 in the battery device 100, the combustible gas in the flue gas can be photolyzed or oxidized into non-toxic water and carbon dioxide by using the photocatalysis principle, reducing the possibility of large accumulation of combustible gas in the surrounding space of the battery monomer 1, reducing the risk of combustion and explosion of combustible gas, and further reducing the security risks of the battery device 100. Thanks to the fact that no driving devices such as fans need to be arranged in the battery device 100, the energy storage system can also realize reduction in volume and cost.

[0106] In some possible implementations, the battery manager 200 can constitute all or part of a battery management system (BMS), and the battery manager 200 can monitor the state of the battery device 100, improve the utilization of the battery device 100, prevent overcharging and over-discharging of the battery device 100, and prolong the service life of the battery device 100. The battery manager 200 is electrically connected to at least part of the plurality of battery monomers 1, and the battery manager 200 is configured to control the battery monomers 1 electrically connected thereto. In one example, the battery manager 200 (indicated by the dashed box in the reference sign) can be arranged in the first housing 11. Figure 11 Figure 11 In other examples, the battery manager 200 can also be arranged outside the first housing 11, and the present application does not make a specific limitation in this regard. In other examples, the battery manager 200 can also be other structures for controlling the battery monomers 1.

[0107] The above description is only for the convenience of those skilled in the art to understand the technical scheme of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.​

Claims

1. A battery device, characterized by, The battery device (100) comprises at least one battery monomer (1) and a flue gas treatment module (2); The at least one battery monomer (1) comprises a first shell (11) and an electric core (12), the electric core (12) is located in the first shell (11), and the first shell (11) is provided with an explosion-proof valve (111); The flue gas treatment module (2) comprises a smoke elimination assembly (21), the smoke elimination assembly (21) comprises a second shell (211), a photocatalyst (212), an electrodeless ultraviolet lamp (213) and a microwave generator (214); the photocatalyst (212), the electrodeless ultraviolet lamp (213) and the microwave generator (214) are located in the second shell (211) respectively, one end of the second shell (211) is connected with the explosion-proof valve (111), and the other end is provided with an exhaust port (2111).

2. The battery device according to claim 1, characterized by The photocatalyst (212) is carried on a carrier (215), the carrier (215) is a flat plate and is arranged perpendicularly to the exhaust direction in the second shell (211).

3. The battery device of claim 2, wherein, The number of the carrier (215) and the electrodeless ultraviolet lamp (213) is multiple, and at least one electrodeless ultraviolet lamp (213) is arranged between adjacent two carriers (215) respectively.

4. The battery device of claim 1, wherein A plurality of fixing supports (2112) are arranged on the side wall of the second shell (211), and the photocatalyst (212), the electrodeless ultraviolet lamp (213) and the microwave generator (214) are respectively installed and fixed through the fixing supports (2112).

5. The battery device of claim 1, wherein An inner wall of the second shell (211) has a reflecting surface (2213), the reflecting surface (2213) can reflect ultraviolet light emitted by the electrodeless ultraviolet lamp (213) and / or microwave emitted by the microwave generator (214).

6. The battery device of claim 1, wherein The flue gas treatment module (2) further comprises a flue (22), the flue (22) is connected between the explosion-proof valve (111) and the second shell (211).

7. The battery device of claim 6, wherein, The flue gas treatment module (2) further comprises an adsorption component (23), the adsorption component (23) is located in the flue (22) or the end of the second shell (211) facing the flue (22).

8. The battery device of claim 6, wherein, The flue gas treatment module (2) further comprises a detection unit (24), a control unit (25) and a power supply unit (26), the detection unit (24) is located in the flue (22), the detection unit (24) is electrically connected with the control unit (25), the control unit (25) is electrically connected with the power supply unit (26), and the power supply unit (26) is electrically connected with the electrodeless ultraviolet lamp (213) and the microwave generator (214).

9. The battery device according to any one of claims 1 to 8, characterized by, The second shell (211) is connected with the first shell (11), and the second shell (211) is located at the top or the bottom of the first shell (11); Or, The second shell (211) is separated from the first shell (11).

10. An energy storage system characterized by, The energy storage system comprises the battery device (100) in any one of claims 1 to 9 and a battery manager (200). The battery manager (200) is electrically connected with at least part of the battery monomers (1) in the battery device (100).

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