Box body, battery and electric device

Abstract

The embodiment of the utility model provides a box body, a battery and an electric device. The box body comprises an electrical cavity, a collection cavity, an isolation part and a processing device, the electrical cavity is used for accommodating a plurality of battery monomers, at least one battery monomer in the plurality of battery monomers comprises a pressure relief mechanism, the collection cavity is used for collecting emissions of the battery monomer provided with the pressure relief mechanism when the pressure relief mechanism is actuated, and the isolation part is used for processing the emissions of the battery monomer provided with the pressure relief mechanism. The isolating part is used for isolating the electrical cavity from the collecting cavity, a first through hole is formed in the isolating part, the emissions can enter the collecting cavity through the first through hole, and the processing device is arranged at the first through hole and used for processing the emissions. And the treatment device is used for treating the emissions so as to reduce the temperature and / or concentration of combustible materials in the emissions. The battery formed by the box body disclosed by the utility model has relatively high safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a box, a battery and an electric device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] The battery will release a large amount of smoke containing combustible substances in a thermal runaway state. The ignition energy required by these smoke is very small. In the presence of oxygen in the air, the smoke is very easy to burn, and even explodes violently. In the prior art, the scheme of discharging the smoke outside the battery system in time is usually adopted to reduce the speed of thermal runaway expansion and the probability of combustion and explosion in the battery, but the flammability and danger of the smoke itself have not been reduced, and the risk of combustion and explosion is still high. SUMMARY

[0004] The purpose of the present application is to provide a box, a battery and an electric device to improve the safety of the battery.

[0005] The present application is achieved by the following technical solutions:

[0006] In a first aspect, the present application provides a box comprising an electrical cavity, a collection cavity, a separation component and a treatment device. The electrical cavity is used to accommodate a plurality of battery monomers. At least one battery monomer in the plurality of battery monomers comprises a pressure relief mechanism. The collection cavity is used to collect the emissions of the battery monomer provided with the pressure relief mechanism when the pressure relief mechanism is actuated. The separation component is used to separate the electrical cavity and the collection cavity. The separation component is provided with a first through hole, and the emissions can pass through the first through hole to enter the collection cavity. The treatment device is arranged at the first through hole and is used to treat the emissions passing through the first through hole to reduce the temperature and / or concentration of the combustible substances in the emissions.

[0007] According to the box of the embodiments of the present application, the treatment device is arranged on the path of the emissions discharged by the battery. The emissions must pass through the treatment device from the electrical cavity to reach the collection cavity during the discharge process. The temperature and / or concentration of the combustible gas in the emissions is reduced on the treatment device during this process. The probability of combustion and even explosion of the battery system is reduced by directly reducing the danger of the emissions themselves, thereby effectively improving the safety of the battery itself.

[0008] According to some embodiments of the present application, the treatment device comprises a carrier and a treatment material. The carrier is connected to the separation component, and the treatment material is arranged on the carrier.

[0009] In the above scheme, the combustible gas in the exhaust is subjected to a physical and chemical reaction with the treatment material arranged on the carrier to reduce the probability of combustion and explosion of the exhaust.

[0010] According to some embodiments of the present application, the treatment material comprises an oxidizing agent for oxidizing the combustible substance in the exhaust.

[0011] In the above scheme, the combustible gas in the exhaust is subjected to an oxidation reaction with the oxidizing agent having an oxidation ability arranged on the carrier to reduce the probability of combustion and explosion of the exhaust.

[0012] According to some embodiments of the present application, the treatment material further comprises a catalyst for catalyzing the oxidation reaction of the oxidizing agent on the combustible substance.

[0013] In the above scheme, the reaction rate of the oxidation reaction of the combustible gas in the exhaust is increased by adding the catalyst, thereby improving the treatment efficiency of the combustible gas in the exhaust.

[0014] According to some embodiments of the present application, the treatment material further comprises an adsorbent for adsorbing the combustible substance in the exhaust.

[0015] In the above scheme, the electrolyte vapor in the exhaust is subjected to adsorption by the treatment material having an adsorption ability arranged on the carrier to reduce the harmfulness of the exhaust.

[0016] According to some embodiments of the present application, the treatment material comprises a phase change material configured to reduce the temperature of the exhaust by phase change.

[0017] In the above scheme, the electrolyte vapor in the exhaust is liquefied by the phase change material reducing the temperature, thereby reducing the harmfulness of the exhaust.

[0018] According to some embodiments of the present application, the carrier is provided with air holes through which the exhaust can flow to the collection cavity.

[0019] In the above scheme, the flow direction of the exhaust is controlled by the air holes arranged on the carrier, thereby increasing the contact area and contact time of the exhaust with the treatment material.

[0020] According to some embodiments of the present application, the carrier is in the form of a plate, and the treatment material is arranged on the surface of the carrier.

[0021] In the above scheme, the treatment material is arranged on the surface of the carrier, so that the exhaust is fully contacted with the treatment material while flowing through the carrier, thereby improving the treatment effect.

[0022] According to some embodiments of the present application, the processing device comprises a plurality of the carriers, and the plurality of the carriers are arranged in an axial direction of the first through hole.

[0023] In the above scheme, by arranging a plurality of carriers, the emissions need to pass through the processing material for multiple times, so as to fully react with the processing material, thereby achieving the purpose of reducing the harmfulness of the emissions.

[0024] According to some embodiments of the present application, two adjacent carriers are arranged in a staggered manner, and the air holes on the two adjacent carriers are arranged in a staggered manner.

[0025] In the above scheme, by arranging the air holes on the adjacent carriers in a staggered manner, the flow path of the emissions between the adjacent carriers is longer, so as to fully contact with the processing material, thereby achieving the purpose of reducing the harmfulness of the emissions.

[0026] According to some embodiments of the present application, the carrier is in a flat plate shape or a bent plate shape.

[0027] In the above scheme, by arranging the carrier in a plate shape, the emissions can fully contact with the processing material on the carrier, and the processing material on the carrier is easy to arrange, thereby improving the processing effect of the processing material on the emissions.

[0028] According to some embodiments of the present application, the isolation component comprises a first surface facing the electrical cavity and a second surface facing the collection cavity, and the processing device is arranged in the first through hole and does not protrude from the first surface and the second surface.

[0029] In the above scheme, by arranging the thickness of the processing device so that it does not protrude from the isolation component, interference to the installation of the battery monomer or negative impact on the flow of the emissions is avoided.

[0030] According to some embodiments of the present application, the isolation component comprises a first area for placing the plurality of battery monomers and a second area provided with a second through hole communicating the collection cavity and the electrical cavity, and the box further comprises an exhaust port, and the emissions in the collection cavity pass through the second through hole and the exhaust port to be discharged out of the box.

[0031] In the above scheme, by arranging the first area and the second area respectively, the battery and the remaining components are separately accommodated, so as to avoid interference therebetween.

[0032] According to some embodiments of the present application, the isolation component is a thermal management component, and the thermal management component is used to accommodate a heat exchange medium to adjust the temperature of the plurality of battery monomers.

[0033] In the above solution, thermal management components are installed to control the temperature of individual battery cells and optimize the battery's operating conditions.

[0034] Secondly, this application provides a battery comprising a plurality of battery cells and the housing described in the above embodiments.

[0035] Thirdly, this application provides an electrical device that includes the battery described in the above embodiments, the battery being used to provide electrical energy.

[0036] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of a vehicle according to some embodiments of this application;

[0039] Figure 2 This is a schematic diagram of the battery structure according to some embodiments of this application;

[0040] Figure 3 for Figure 2 A top view of the battery shown;

[0041] Figure 4 for Figure 3 The diagram shows a cross-section of the battery along AA.

[0042] Figure 5 for Figure 4 An enlarged view of part B of the battery shown;

[0043] Figure 6 for Figure 2 A schematic diagram of the processing device in the battery is shown;

[0044] Figure 7 This is a schematic diagram of the structure of a battery processing device according to some embodiments of this application;

[0045] Figure 8 for Figure 7 Top view of the processing device shown;

[0046] Figure 9 forFigure 8 A cross-sectional view of the processing device along C-C is shown.

[0047] Figure 10 An enlarged view of part D of the processing device is shown. Figure 9 An enlarged view of part D of the processing device is shown.

[0048] Figure 11 A schematic view of the structure of the processing device in the battery of another embodiment of the present application is shown.

[0049] Figure 12 An enlarged view of part D of the processing device is shown. Figure 11 A top view of the processing device is shown.

[0050] Figure 13 An enlarged view of part D of the processing device is shown. Figure 12 A cross-sectional view of the processing device along E-E is shown.

[0051] Figure 14 An enlarged view of part F of the processing device is shown. Figure 13 An enlarged view of part F of the processing device is shown.

[0052] In the drawings, the drawings are not drawn according to the actual proportions.

[0053] Label explanation: 100-battery; 10-box; 101-electric cavity; 102-collection cavity; 103-isolation component, 1031-first through hole, 1032-second through hole; 11-main body, 111-exhaust port; 12-top cover; 20-processing device, 21-carrier, 211-air hole; 30-battery monomer, 31-pressure relief mechanism; 200-controller; 300-motor; 1000-vehicle. DETAILED DESCRIPTION

[0054] The embodiments of the present application will be further described in detail with reference to the accompanying drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, i.e., the present application is not limited to the described examples.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0056] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0057] Reference herein to “an embodiment” means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to one of ordinary skill in the art, embodiments described herein can be combined with other embodiments in various ways.

[0058] In the description of embodiments of the present application, the term “a plurality of” means two or more (including two), and the same applies to “a plurality of groups” and “a plurality of pieces”.

[0059] In the description of embodiments of the present application, the technical terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0060] In the description of embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms “mounting”, “connection”, “connecting”, “fixing”, and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] “Multiple” appearing in the present application means two or more (including two), and the same applies to “multiple groups” and “multiple pieces”.

[0062] In the present application, the battery referred to means a single physical module including one or more battery monomers to provide higher voltage and capacity. For example, the battery referred to in the present application can include a battery module or a battery pack, etc.

[0063] In the current market situation, the application of power batteries is more and more extensive, not only as the energy use of traditional first industry and second industry, but also widely and deeply applied in fields such as electric bicycles, cars, motorcycles, ships, unmanned aerial vehicles, and military equipment, aerospace, etc. With the continuous deepening of the industry, the application of power batteries is more and more extensive, and the industry scale is continuously improved.

[0064] The present inventors noticed that in the application scenarios represented by electric vehicles, accidents such as battery self-ignition and explosion often appear in the news, attracting widespread attention from society. Such accidents have played an important warning role for the development of power batteries.

[0065] Due to the current application scenarios of power batteries, the energy density of the battery is very important to the technicians in the field. Batteries with high energy density can output higher power in the same volume, which has considerable practical significance for the miniaturization and application range of the battery. However, high energy density also means that the battery cells in the battery are arranged closely, and high space utilization rate means less remaining space. When the thermal runaway of the battery cell occurs, a large amount of smoke will be quickly emitted. At this time, not only is the smoke itself dangerous, but also the rapid generation of a large amount of smoke can cause the air pressure in the battery to rise rapidly, thereby easily damaging the battery cell shell structure and causing the smoke to flow to other areas in the battery. Therefore, when a battery cell appears thermal runaway, it will damage its own structure in a very short time and have an adverse effect on the adjacent battery cells, causing a range of thermal runaway in the entire battery, and ultimately causing the entire battery to burn or even explode. This also leads to the fact that when a battery accident occurs in an electric vehicle, the time left for the driver and passengers to escape is very limited, which is very detrimental to the widespread application of power batteries.

[0066] To overcome this defect, the common solution in the prior art is to provide an independent pressure relief mechanism on the battery cell, and to provide an exhaust pressure relief device for the battery. In this way, when thermal runaway occurs, the pressure relief mechanism quickly discharges the smoke in the battery cell, and the exhaust pressure relief device discharges the smoke outside the battery, avoiding the rapid accumulation of smoke in the battery, delaying the further expansion and deterioration of the battery thermal runaway by reducing the internal air pressure, and allowing the driver, passenger and surrounding personnel to evacuate.

[0067] This scheme can indeed delay the deterioration of the battery thermal runaway to some extent, and gain time for personnel evacuation, but it needs to be noted that the smoke generated by the battery thermal runaway itself contains highly flammable components, and the environment of the thermal runaway battery is complex, and it is easy to cause combustion or even explosion with a tiny fire source. Therefore, the prior art does not fundamentally eliminate the danger of smoke, and there is still a high probability of combustion or even explosion during the smoke exhaust process, and it cannot effectively delay the time of danger when the battery thermal runaway occurs, and the improvement of the safety of the battery is limited.

[0068] In view of this, the present application provides a technical scheme, by setting a processing device on the path of the battery exhaust emissions, so that the emissions must pass through the processing device to reach the collection cavity after passing through the electrical cavity during the exhaust process. The temperature and / or temperature of the flammable gas in the emissions on the processing device is reduced during this process, which reduces the probability of combustion or even explosion of the battery system by directly reducing the danger of the emissions itself, effectively improving the safety of the battery itself.

[0069] The battery disclosed in the embodiments of the present application can be applied to, but is not limited to, an electric device such as a vehicle, a ship or an aircraft. A power supply system of the electric device composed of the battery disclosed in the present application can be used.

[0070] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 1000 is provided for an embodiment of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile. The vehicle 1000 can be provided with a motor 300, a controller 200 and a battery 100 inside. The controller 200 is used to control the battery 100 to supply power to the motor 300. For example, the battery 100 can be arranged at the bottom, the front or the rear of the vehicle 1000. The battery 100 can be used to supply power to the vehicle 1000, for example, the battery 100 can be used as an operating power source of the vehicle 1000, and used for the circuit system of the vehicle 1000, such as the starting, navigation and working power demand of the vehicle 1000.

[0071] In another embodiment of the present application, the battery 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0072] The battery comprises a box body 10 and a battery monomer 30, and the battery monomer 30 is contained in the box body 10. The box body 10 is used to provide a containing space for the battery monomer 30.

[0073] Please refer to Figures 2 to 5 , Figure 2A structural schematic diagram of a battery according to some embodiments of the present application, Figure 3 A top view of a battery according to some embodiments of the present application, Figure 4 A structural schematic diagram of a battery according to some embodiments of the present application, Figure 3 A cross-sectional view along A-A, Figure 5 A structural schematic diagram of a battery according to some embodiments of the present application, Figure 4 An enlarged view of part B, the present application proposes a box 10, which comprises an electrical cavity 101, a collection cavity 102, a separation component 103 and a treatment device 20. The electrical cavity 101 is used to accommodate a plurality of battery monomers 30, at least one battery monomer 30 in the plurality of battery monomers 30 comprises a pressure relief mechanism 31. The collection cavity 102 is used to collect the emissions of the battery monomer 30 provided with the pressure relief mechanism 31 when the pressure relief mechanism 31 is actuated. The separation component 103 is used to separate the electrical cavity 101 and the collection cavity 102, and the separation component 103 is provided with a first through hole 1031, and the emissions can pass through the first through hole 1031 to enter the collection cavity 102. The treatment device 20 is arranged at the first through hole 1031, and is used to treat the emissions passing through the first through hole 1031, so as to reduce the temperature and / or concentration of the combustible substances in the emissions.

[0074] In the battery 100, the plurality of battery monomers 30 can be connected in series, in parallel or in a mixed manner. The mixed manner means that the plurality of battery monomers 30 are connected in series and in parallel. The plurality of battery monomers 30 can be directly connected in series, in parallel or in a mixed manner, and then the plurality of battery monomers 30 are accommodated in the box 10. Of course, the battery 100 can also be in the form of a plurality of battery monomers 30 connected in series, in parallel or in a mixed manner to form a battery module, and then a plurality of battery modules are connected in series, in parallel or in a mixed manner to form a whole, and are accommodated in the box 10. The battery 100 can also include other structures, for example, the battery 100 can also include a busbar component for realizing the electrical connection between the plurality of battery monomers 30.

[0075] Each battery monomer 30 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery monomer 30 can be in the shape of a cylinder, a flat body, a cuboid or other shapes.

[0076] The battery monomer 30 refers to the smallest unit of the battery 100, and the battery monomer 30 comprises an end cover, a shell, a battery core assembly and other functional components, such as the pressure relief mechanism 31. The pressure relief mechanism 31 is arranged on the shell of the battery monomer 30, and the pressure relief mechanism 31 is used to release the internal pressure of the battery monomer 30, and can be actively actuated or passively actuated. For example, when the battery monomer 30 occurs thermal runaway, the pressure relief mechanism 31 is passively actuated, and the pressure relief mechanism 31 releases the emissions generated inside the battery monomer 30 to the outside of the battery monomer 30, so as to avoid the internal pressure of the battery monomer 30 being too high.

[0077] The electrical cavity 101 is a part of space in the box 10, used to accommodate a plurality of battery cells 30. The battery cells 30 are closely placed in the electrical cavity 101 to make full use of the space in the electrical cavity 101, and to improve the energy density of the battery 100. The shape of the battery cavity 30 can be determined according to the plurality of battery cells 30 and other components accommodated. Since the battery cells 30 in the electrical cavity 101 form a higher voltage output through electrical connection, the electrical cavity 101 can also be referred to as a high-voltage cavity.

[0078] The collection cavity 102 is a part of space in the box 10, which is arranged adjacent to the electrical cavity 101 and can be sealed or unsealed. The collection cavity 102 has no electrical connection connected to the voltage output, and can also be referred to as a low-voltage cavity relative to the high-voltage cavity. The pressure relief mechanism 31 in the battery cell 30 is arranged towards the isolation component 103 to discharge the discharge of the battery cell 30 to the collection cavity 102, and then discharged from the battery 100 through other components.

[0079] The isolation component 103 is arranged in the box 10, and in this embodiment, the isolation component 103 is a plate-shaped structure arranged in the horizontal direction to separate the internal space of the entire box 10 into the electrical cavity 101 located above and the collection cavity 102 located below. The electrical cavity 101 accommodates the battery cell 30, and the isolation component 103 supports the plurality of battery cells 30. The material of the isolation component 103 is selected to ensure the balanced fixing and protection of the battery cell 30, and is not limited to a specific material, nor is it limited whether the material of the isolation component 103 is uniform with the material of the box 10. The isolation component 103 can be integrally formed with the box 10 or subsequently installed in the box 10, and can be arranged according to the process flow of production and installation operation.

[0080] The isolation component 103 is provided with a first through hole 1031, and the number, size and position of the first through hole 1031 can be arranged according to the arrangement of the pressure relief mechanism 31 in the battery cell 30. Each first through hole 1031 is arranged corresponding to the pressure relief mechanism 31 to meet the purpose of smoothly guiding the discharge into the collection cavity 102 without affecting the flow of the pressure relief mechanism 31. For example, the position of the first through hole 1031 is arranged corresponding to the pressure relief mechanism 31 on each battery cell 30, the cross-sectional area of the first through hole 1031 is not less than the size of the outlet of the pressure relief mechanism 31, and the shape of the first through hole 1031 does not block the outlet of the pressure relief mechanism 31.

[0081] When battery cell 30 experiences thermal runaway, the emissions mainly consist of electrolyte vapor and combustibles. The electrolyte vapor includes lipids such as methyl ethyl carbonate, ethylene carbonate, and propylene carbonate, while the combustibles include flammable gases such as hydrogen, carbon monoxide, acetylene, ethylene, and alkanes such as methane. Electrolyte vapor is toxic to human health and can cause symptoms such as dizziness, headache, weakness, nausea, and difficulty breathing through inhalation and skin absorption. Incomplete combustion can easily produce combustible products such as carbon monoxide. The hazards of combustibles lie primarily in their susceptibility to ignition, leading to combustion or even explosion, causing severe impact and damage to personnel and the surrounding environment.

[0082] The treatment device 20 is embedded in the first through hole 1031. The shape of the treatment device 20 is basically the same as the shape of the first through hole 1031 in the vertical projection, so as to basically fill the first through hole 1031 and prevent the emissions from bypassing the treatment device 20 and directly entering the collection chamber 102. When the emissions pass through the treatment device 20, the treatment device 20 can perform targeted treatment on the electrolyte vapor and combustibles in the emissions, so as to fundamentally reduce the danger of the emissions.

[0083] By installing a treatment device 20 along the path through which the emissions must pass, the hazardous or dangerous components in the emissions are subjected to targeted physical or chemical reactions, causing them to denature and lose their hazardousness or transform into non-gases, thereby reducing the inherent danger of the emissions and improving the safety of the battery 100.

[0084] According to some embodiments of this application, such as Figure 6 As shown, Figure 6 This is a schematic diagram of a battery processing apparatus according to an embodiment of the present application. The processing apparatus 20 includes a carrier 21 and a processing material 22. The carrier 21 is connected to an isolation member 103, and the processing material 22 is disposed on the carrier 21. The carrier 21 is nested within a first through hole 1031 on the isolation member 103.

[0085] The carrier is a structural component located in the first through hole 1031, used to support the processing material 22.

[0086] The treatment material 22 can be applied to the carrier 21 by means of pasting, coating, or other methods. The treatment material 22 can be selected according to the composition of the emissions to treat the emissions.

[0087] By setting up a carrier 21 and a treatment material 22, the treatment material 22 reacts with the emissions when the emissions pass by, thereby reducing the harmfulness of the emissions and improving the safety of the battery 100.

[0088] According to some embodiments of this application, the treatment material 22 includes an oxidant used to oxidize combustibles in the emissions.

[0089] The oxidizing agent oxidizes the combustible, changes the composition and properties of the combustible through a chemical reaction, thereby achieving harmless treatment of the emissions. Combustion is essentially an oxidation reaction that releases heat rapidly and emits light, and the combustible that can burn is all reducing. Therefore, before the combustible burns, a milder oxidation-reduction reaction is performed on it, which can effectively reduce the amount of combustible, thereby avoiding the occurrence of a violent oxidation-reduction reaction (explosion) of the emissions and improving the safety of the battery 100.

[0090] The oxidizing agent can include one or more of copper oxide, sodium peroxide, and potassium permanganate. In this embodiment, the form of the oxidizing agent can be a solid powder. The fixed powder form of the oxidizing agent, such as copper oxide, facilitates fixation on the carrier 21, avoiding the risk of falling off and failure due to jolting, vibration, tilting, and the like during use.

[0091] By providing a treatment material 22 with oxidation ability, an oxidation reaction is performed on the combustible gas in the emissions, thereby reducing the probability of explosion of the emissions.

[0092] According to some embodiments of the present application, the treatment material 22 further includes a catalyst, which is used to catalyze the oxidation reaction of the oxidizing agent on the combustible.

[0093] Since the rate at which the emissions are generated when the battery monomer 30 is in thermal runaway is very fast, and the gas pressure in the battery monomer 30 is high, the time for the emissions to pass through the treatment device 20 is very short, which results in a short contact time between the emissions and the oxidizing agent, and easily leads to insufficient reaction. Therefore, placing a catalyst on the treatment device 20 can perform a rapid and effective oxidation reaction on the combustible in the emissions, improve the reaction rate, and effectively reduce the danger of the emissions.

[0094] The catalyst includes silicon carbide porous ceramics and / or noble metal supported catalysts. The porous ceramic structure has the characteristic of a large contact area, which further allows a larger contact area during the reaction and makes the reaction more complete. The noble metal supported catalyst supports the active component through the carrier of the noble metal, which disperses the active component and increases the strength of the catalyst.

[0095] By providing a suitable catalyst, the reaction efficiency on the combustible in the emissions can be further improved, so that the danger of the emissions is significantly reduced after the emissions pass through the treatment device 20, and the safety of the battery 100 is improved.

[0096] According to some embodiments of the present application, the treatment material 22 further includes an adsorbent, which is used to adsorb the combustible in the emissions.

[0097] The combustible material also includes electrolyte vapor. The electrolyte is a carrier of ion transmission in the battery 100, and generally includes lithium salt and organic solvent, which is essentially an organic volatile liquid. When the battery cell 30 is in thermal runaway, the electrolyte vapor is generated by heating, which can cause harm to the human body through inhalation and skin absorption. The adsorption of the electrolyte vapor can include two kinds, one is to adsorb the positive and negative ions in the electrolyte, and the other is to perform ion exchange adsorption, and the application does not limit the adsorption mode, and the purpose is to achieve adsorption of the electrolyte vapor.

[0098] The adsorbent can include one or more of activated carbon, organic solvent and organic adsorbent. For example, activated carbon has a large surface area, so it has mutual attraction force to external substances. The activated carbon and the exhaust are attracted to each other by intermolecular force (Van der Waals force), forming an adsorption phenomenon.

[0099] The adsorbent adsorbs the electrolyte vapor in the exhaust, reducing the content of the electrolyte vapor in the exhaust, and achieving the beneficial effect of reducing the harmfulness of the exhaust.

[0100] According to some embodiments of the application, the treatment material 22 includes a phase change material configured to reduce the temperature of the exhaust by phase change.

[0101] The phase change material has a high thermal conductivity, which is used to rapidly cool and liquefy the electrolyte vapor it contacts, so as to be retained in the treatment device 20 and no longer continue to disperse to the outside of the battery cell 30 with the exhaust, thereby reducing the content of the electrolyte vapor in the exhaust and reducing the harmfulness of the exhaust.

[0102] The phase change material is provided to reduce the gas pressure and harmfulness of the exhaust by cooling and liquefying the electrolyte vapor, thereby improving the safety of the battery.

[0103] Please refer to Figures 7 to 10 , Figure 7 the structural schematic diagram of the treatment device in the battery of some embodiments of the application, Figure 8 is Figure 7 the top view of the treatment device in the battery, Figure 9 is Figure 8 the sectional view along C-C in the battery, Figure 10 is Figure 9 the enlarged view of part D in the battery, according to some embodiments of the application, the carrier 21 is provided with a gas hole 211, and the exhaust can pass through the gas hole 211 to flow to the collection cavity 102.

[0104] The air hole 211 is a necessary passage for the exhaust to discharge the battery monomer 30. The air hole 211 can be circular, rectangular or other shapes, and the application does not limit the shape of the air hole 211 for the purpose of exhaust passing. The cross-sectional size of the air hole 211 will affect the flow size of the exhaust leaving the battery monomer 30, so the air hole 211 should not be too small to affect the discharge of the exhaust, nor should it be too large to affect the placement of the treatment material 22 to ensure sufficient contact between the treatment material 22 and the exhaust.

[0105] By opening the air hole on the carrier 21, the flow direction of the exhaust is controlled, thereby increasing the contact area and contact time of the exhaust and the treatment material 22, so that the exhaust is fully reacted and treated.

[0106] According to some embodiments of the application, the carrier 21 is plate-shaped, and the treatment material 22 is arranged on the surface of the carrier 21.

[0107] The plate-shaped carrier 21 is nested in the first through hole 1031, and since the exhaust can only pass through the air hole 211 on the carrier 21, the carrier 21 blocks the exhaust while allowing the exhaust to fully contact the treatment material 22 on the plate-shaped carrier 21, thereby fully reacting with the combustible and electrolyte vapor in the exhaust, reducing the harm of the exhaust, and improving the safety of the battery 100.

[0108] The carrier 21 is set to be plate-shaped to achieve the purpose of fully contacting the exhaust with the treatment material 22 on the carrier 21 and facilitating the arrangement of the treatment material 22 on the carrier 21, thereby improving the treatment effect of the treatment material 22 on the exhaust.

[0109] According to some embodiments of the application, the treatment device 20 includes a plurality of carriers 21, and the plurality of carriers 21 are arranged in layers along the axial direction of the first through hole 1031.

[0110] The carrier 21 can be selected from a plurality of carriers 21, and the plurality of carriers 21 are arranged in layers, so that the exhaust needs to contact each carrier 21 in turn and fully react with the oxidizing agent, catalyst, adsorbent and other treatment materials 22 on each carrier 21.

[0111] By arranging a plurality of carriers 21, the exhaust needs to pass through the treatment material 22 multiple times to fully react with the treatment material 22, thereby effectively reducing the content of combustible and electrolyte vapor in the exhaust and improving the safety of the battery 100.

[0112] According to some embodiments of the application, two adjacent carriers 21 are arranged with a spacing, and the air holes 211 on the two adjacent carriers 21 are arranged in a staggered manner.

[0113] The misalignment setting means that if the carriers 21 are parallel to each other in the horizontal direction, the air holes 211 on the adjacent carriers 21 are not arranged in the same vertical direction. Thus, after the exhaust passes through the air holes 211 of the upper carrier 21, it must move in the horizontal direction before reaching the air holes 211 of the next carrier 21 to continue flowing. The space between the adjacent carriers 21 forms a reaction area. Since the treatment device 20 is provided with oxidizing agents, catalysts, adsorbents and other reaction materials, each reaction area at least includes the treatment material 22 carried by one of the adjacent carriers.

[0114] The misalignment of the air holes 211 makes the exhaust pass through multiple reaction areas and fully react with the treatment material 22 in the reaction area, thereby improving the treatment effect of the treatment device 20 and effectively improving the safety of the battery 100.

[0115] Please refer to Figures 11 to 14 , Figure 11 the structural schematic diagram of the treatment device in the battery of some other embodiments of the present application, Figure 12 is Figure 11 the top view of the treatment device, Figure 13 is Figure 12 the sectional view along E-E in FIG. 8, Figure 14 is Figure 13 the enlarged view of the F part in FIG. 8. According to some embodiments of the present application, the carrier 21 is in the form of a flat plate or a bent plate.

[0116] When the carrier 21 is in the form of a flat plate, it can be horizontally arranged in the first through hole 1031 and parallel to the isolation part 103. This structure has low production difficulty and simple process.

[0117] When the carrier 21 is in the form of a bent plate, it is multiple times bent and forms a multi-stage ladder shape similar to W, which has high strength. The bent plate-shaped carrier 21 can make the exhaust pass through a longer distance in the reaction area between the carriers 21, thereby making the treatment device 20 have better treatment effect on the exhaust.

[0118] When a first through hole 1031 contains multiple bent plate-shaped carriers 21, the air holes 211 of the adjacent carriers 21 are arranged at different positions. For example, in the embodiment, the air holes 211 of the topmost carrier are arranged in the downward recessed part of the carrier, and the air holes 211 of the next layer of carriers 21 are arranged in the upward protruding part of the carrier 21. The air holes 211 of the remaining layers of carriers are arranged in the same way.

[0119] By arranging the carrier 21 in the form of a plate, the exhaust can fully contact the treatment material 22 on the carrier 21, and the treatment material 22 on the carrier 21 is easy to arrange, thereby improving the treatment effect of the treatment material 22 on the exhaust.

[0120] According to some embodiments of the present application, the isolation component 103 comprises a first surface facing the electrical cavity 101 and a second surface facing the collection cavity 102, and the processing device 20 is arranged in the first through-hole 1031 and does not protrude from the first surface and the second surface.

[0121] The first surface is the upward-facing surface of the isolation component 103, and the second surface is the downward-facing surface. When the processing device 20 is arranged in the first through-hole 1031, it does not protrude in both the upward and downward directions from the isolation component 103. In particular, when the carrier 21 is selected to be a bent plate, the upper bent protrusion does not protrude from the first surface, and the lower bent portion does not protrude from the second surface.

[0122] The processing device 60 does not protrude upward to avoid interfering with the installation of the battery monomer 30, and does not protrude downward to avoid affecting the flow of the exhaust in the collection cavity 102.

[0123] According to some embodiments of the present application, the isolation component 103 comprises a first region 1033 for placing a plurality of battery monomers 30 and a second region 1034 provided with a second through-hole 1032 communicating the collection cavity 102 and the electrical cavity 101, and the box 10 further comprises an exhaust port 111, and the exhaust in the collection cavity 102 is discharged from the box 10 through the second through-hole 1032 and the exhaust port 111.

[0124] It should be noted that, since the collection cavity 102 is located at the bottom of the battery 100 and is mainly used to guide the discharge of the exhaust of the battery monomer 30, and considering the overall energy density of the battery 100, the collection cavity 102 is generally limited in size and has a relatively flat shape, with a height of only a few millimeters. Therefore, it is difficult to place the necessary components in the collection cavity 102. The second region 1034 is provided to accommodate the necessary components in the battery 100, such as a pressure relief valve. The pressure relief valve can be used to draw the exhaust in the collection cavity 102 to the external environment. The second through-hole 1032 is located on the second region 1034 of the isolation component 103, which facilitates the pressure relief valve to draw the exhaust in the collection cavity 102 through the second through-hole 1032 in the third cavity, and to discharge the battery 100 through the exhaust port 111, so as to reduce the air pressure in the battery 100.

[0125] The second region 1034 and the first region 1033 can be separated by the packaging structure corresponding to the side of the battery 100 module. The battery 100 module packages and combines a plurality of battery monomers 30, and then is loaded into the battery 100. At this time, the second region 1034 does not carry the battery monomer 30, and forms a separate space to accommodate the necessary components of the battery 100.

[0126] By setting the first region 1033 and the second region 1034, the battery and the rest of the components are separately accommodated, avoiding interference between them.

[0127] According to some embodiments of the present application, the isolation component 103 is a thermal management component for accommodating a heat exchange medium to regulate the temperature of the plurality of battery cells 30.

[0128] The thermal management component is used to accommodate a heat exchange medium to regulate the temperature of the plurality of battery cells. The heat exchange medium here can be a liquid or a gas, and the temperature regulation refers to heating or cooling the plurality of battery cells. In the case of cooling or cooling the battery cells, the thermal management component is used to accommodate the heat exchange medium to lower the temperature of the plurality of battery cells, at this time, the thermal management component can also be called a cooling component, a cooling system or a cooling plate, etc., and the heat exchange medium it contains can also be called a cooling medium or a cooling fluid, more specifically, it can be called a cooling liquid or a cooling gas. In addition, the thermal management component can also be used for heating to warm up the plurality of battery cells, and the embodiments of the present application are not limited thereto.

[0129] The thermal management component can be used to cool the battery cells 30 without occupying additional space.

[0130] According to some embodiments of the present application, the present application provides a battery 100, which comprises a plurality of battery cells 30 and the box 10 provided in the above embodiments, and the plurality of battery cells 30 are accommodated in the box 10.

[0131] According to some embodiments of the present application, the present application also provides a power consuming device, which comprises the battery 100 provided in the above embodiments, and the battery 100 is used to provide electric energy. The power consuming device is any device or system that uses the battery as described above.

[0132] According to some embodiments of the present application, the present application provides a battery 100, which comprises a box 10, battery cells 30, a separation component 103 and a treatment device 20. The box 10 comprises a main body 11 at the bottom and a top cover 12. The separation component 103 is horizontally arranged in the main body 11, which separates the box 10 into an upper electrical cavity 101 and a lower collection cavity 102, and a plurality of battery cells 30 are arranged in the electrical cavity 101. The battery cell 30 comprises a pressure relief mechanism 31 for discharging the internal emissions when the battery cell 30 is in thermal runaway. The separation component 103 is provided with a first through hole 1031, which communicates the electrical cavity 101 and the collection cavity 102, and the position of the first through hole 1031 corresponds to the position of the pressure relief mechanism 31 on the battery cell 30. The treatment device 20 is embedded in the first through hole 1031, and the treatment device 20 comprises a structure part of a carrier 21 and a treatment material 22 arranged on the carrier 21, which is used to treat the emissions and reduce the temperature and concentration of flammable substances and electrolyte vapor in the emissions. The separation component 103 comprises a first region 1033 and a second region 1034, the battery cell 30 is arranged in the first region 1033, and the rest of the components of the battery 100 are arranged in the second region 1034, and the first region 1033 and the second region 1034 are separated by the packaging of the battery 100 module. The second region 1034 is provided with a second through hole 1032, and the adjacent box 10 of the second region 1034 is provided with an exhaust port 111. The emissions discharged by the battery cell 30 enter the collection cavity 102 through the treatment device 20, and then flow to the outside of the battery 100 through the second through hole 1032 and the exhaust port 111 in turn. The treatment device 20 is provided with a plurality of flat plate-shaped carriers 21 arranged in layers, and the air holes 211 on the adjacent carriers 21 are arranged in a staggered manner.

[0133] According to some embodiments of the present application, the present application provides a battery 100, which comprises a box 10, battery cells 30, a separation component 103 and a treatment device 20. The box 10 comprises a main body 11 at the bottom and a top cover 12. The separation component 103 is horizontally arranged in the main body 11, which separates the box 10 into an upper electrical cavity 101 and a lower collection cavity 102, and a plurality of battery cells 30 are arranged in the electrical cavity 101. The battery cell 30 comprises a pressure relief mechanism 31 for discharging the internal emissions when the battery cell 30 is in thermal runaway. The separation component 103 is provided with a first through hole 1031, which communicates the electrical cavity 101 and the collection cavity 102, and the position of the first through hole 1031 corresponds to the position of the pressure relief mechanism 31 on the battery cell 30. The treatment device 20 is embedded in the first through hole 1031, and the treatment device 20 comprises a structure part of a carrier 21 and a treatment material 22 arranged on the carrier 21, which is used to treat the emissions and reduce the temperature and concentration of flammable substances and electrolyte vapor in the emissions. The separation component 103 comprises a first region 1033 and a second region 1034, the battery cell 30 is arranged in the first region 1033, and the rest of the components of the battery 100 are arranged in the second region 1034, and the first region 1033 and the second region 1034 are separated by the packaging of the battery 100 module. The second region 1034 is provided with a second through hole 1032, and the adjacent box 10 of the second region 1034 is provided with an exhaust port 111. The emissions discharged by the battery cell 30 enter the collection cavity 102 through the treatment device 20, and then flow to the outside of the battery 100 through the second through hole 1032 and the exhaust port 111 in turn. The treatment device 20 is provided with a plurality of flat plate-shaped carriers 21 arranged in layers, and the air holes 211 on the adjacent carriers 21 are arranged in a staggered manner.

[0134] According to some embodiments of the present application, the present application provides a battery 100, which comprises a box 10, battery cells 30, a separation component 103 and a treatment device 20. The box 10 comprises a main body 11 at the bottom and a top cover 12. The separation component 103 is horizontally arranged in the main body 11, which separates the box 10 into an upper electrical cavity 101 and a lower collection cavity 102, and a plurality of battery cells 30 are arranged in the electrical cavity 101. The battery cell 30 comprises a pressure relief mechanism 31 for discharging the internal emissions when the battery cell 30 is in thermal runaway. The separation component 103 is provided with a first through hole 1031, which communicates the electrical cavity 101 and the collection cavity 102, and the position of the first through hole 1031 corresponds to the position of the pressure relief mechanism 31 on the battery cell 30. The treatment device 20 is embedded in the first through hole 1031, and the treatment device 20 comprises a structure part of a carrier 21 and a treatment material 22 arranged on the carrier 21, which is used to treat the emissions and reduce the temperature and concentration of flammable substances and electrolyte vapor in the emissions. The separation component 103 comprises a first region 1033 and a second region 1034, the battery cell 30 is arranged in the first region 1033, and the rest of the components of the battery 100 are arranged in the second region 1034, and the first region 1033 and the second region 1034 are separated by the packaging of the battery 100 module. The second region 1034 is provided with a second through hole 1032, and the adjacent box 10 of the second region 1034 is provided with an exhaust port 111. The emissions discharged by the battery cell 30 enter the collection cavity 102 through the treatment device 20, and then flow to the outside of the battery 100 through the second through hole 1032 and the exhaust port 111 in turn. The treatment device 20 is provided with a plurality of flat plate-shaped carriers 21 arranged in layers, and the air holes 211 on the adjacent carriers 21 are arranged in a staggered manner.

[0135] The embodiment sets the bending plate-shaped carrier 21, so that the exhaust passes more time and longer distance in the treatment device 20 during the discharge process, so that the treatment device 20 fully reacts to the exhaust, reduces the danger of the exhaust, and thus improves the safety of the battery 100.

[0136] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the application. In particular, the technical features mentioned in each of the embodiments can be combined in any manner, provided that there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A case characterized by comprising: The battery includes: an electrical cavity for accommodating a plurality of battery cells, at least one of the battery cells including a pressure relief mechanism; a collection cavity for collecting emissions of the battery cell provided with the pressure relief mechanism when the pressure relief mechanism is actuated; an isolation component for isolating the electrical cavity and the collection cavity, the isolation component being provided with a first through-hole through which the emissions can enter the collection cavity; a treatment device provided at the first through-hole for treating the emissions passing through the first through-hole to reduce temperature and / or concentration of combustible in the emissions.

2. The case of claim 1, wherein, The treatment device includes a carrier connected to the isolation component and a treatment material provided on the carrier.

3. The case of claim 1, wherein, The treatment device is provided with an oxidizing agent for oxidizing the combustible in the emissions.

4. The case of claim 3, wherein, The treatment device is provided with a catalyst for catalyzing the oxidation reaction of the combustible by the oxidizing agent.

5. The case of claim 1, wherein, The treatment device is provided with an adsorbent for adsorbing the combustible in the emissions.

6. The case of claim 1, wherein, The treatment device is provided with a phase change material configured to reduce the temperature of the emissions by phase change.

7. The case of claim 2, wherein, The carrier is provided with air holes through which the emissions can flow to the collection cavity.

8. The case of claim 2, wherein, The carrier is in the form of a plate, and the treatment material is provided on a surface of the carrier.

9. The case of claim 2, wherein, The treatment device includes a plurality of carriers stacked along an axial direction of the first through-hole.

10. The case of claim 7, wherein, Two adjacent carriers are spaced apart, and the air holes on the two adjacent carriers are misaligned.

11. The case of claim 2, wherein, The carrier is in the form of a flat plate or a bent plate.

12. The case of claim 1, wherein, The isolation component includes a first surface facing the electrical cavity and a second surface facing the collection cavity, and the treatment device is provided within the first through-hole and does not protrude from the first surface and the second surface.

13. The case of claim 1, wherein, The isolation component includes a first region for placing the plurality of battery cells and a second region provided with a second through-hole communicating the collection cavity and the electrical cavity, and the battery further includes an exhaust port, and the emissions in the collection cavity pass through the second through-hole and the exhaust port to be discharged out of the battery.

14. The case of claim 1, wherein, The isolation component is a thermal management component for accommodating a heat exchange medium to regulate the temperature of the plurality of battery cells.

15. A battery, characterized by The battery includes: a plurality of battery cells; a battery as claimed in any one of claims 1 to 14, the plurality of battery cells being accommodated in the battery.

16. An electrical device, comprising: The electrical device includes a battery as claimed in claim 15 for providing electrical energy.

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