Battery and power consuming device

Abstract

A battery and an electrical device are disclosed. The battery includes: a battery case having a receiving space; a battery cell disposed within the receiving space and having a pressure relief section; and an oxygen-consuming element disposed within the receiving space and used to consume oxygen in the receiving space when the pressure relief section is in a depressurized state. In the above technical solution, by setting an oxygen-consuming element within the receiving space for accommodating the battery cell, the oxygen-consuming element consumes oxygen in the receiving space when the pressure relief section is in a depressurized state, thereby reducing the oxygen content in the receiving space. This effectively suppresses fire caused by pressure relief, providing more time for property rescue and personnel escape in the event of thermal runaway.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more specifically, to a battery and an electrical device. Background Technology

[0002] In related technologies, short circuits in individual battery cells can easily lead to battery fires, causing significant economic losses and even endangering lives. Summary of the Invention

[0003] This invention provides a battery that can effectively suppress battery fires.

[0004] In a first aspect, embodiments of the present invention provide a battery, comprising: a battery case having a receiving space; a battery cell disposed within the receiving space and having a pressure relief portion; and an oxygen-consuming element disposed within the receiving space and used to consume oxygen in the receiving space when the pressure relief portion is in a pressure-relieved state.

[0005] In the above technical solution, by setting an oxygen-consuming component in the housing space used to accommodate the battery cell, the oxygen-consuming component consumes the oxygen in the housing space when the pressure relief part is in a depressurized state, thereby reducing the oxygen content in the housing space and effectively suppressing the fire caused by pressure relief, providing more time for property rescue and personnel escape in the event of thermal runaway.

[0006] In some embodiments, the oxygen-consuming component includes an oxygen-consuming material, which comprises one or more combinations of red phosphorus, carbon powder, and cobalt crystals. In the above technical solution, the oxygen-consuming material reacts violently with oxygen, thereby rapidly consuming oxygen and suppressing fire more promptly and quickly.

[0007] In some embodiments, the oxygen-consuming component includes an oxygen-consuming material and an encapsulation layer for encapsulating the oxygen-consuming material. The temperature resistance of the encapsulation layer is lower than the discharge temperature of the pressure relief section. In the above technical solution, when the actual temperature is lower than the temperature resistance of the encapsulation layer, the structure of the encapsulation layer remains intact, thereby maintaining the encapsulation of the oxygen-consuming material and isolating it from the air in the containment space, thus preserving the oxygen-consuming capacity of the material. When the actual temperature is greater than or equal to the temperature resistance of the encapsulation layer, the structure of the encapsulation layer is destroyed, and the oxygen-consuming material is exposed to the containment space and reacts with the oxygen in the containment space, thereby consuming the oxygen in the containment space.

[0008] In some embodiments, the temperature resistance of the encapsulation layer is greater than or equal to 100°C and less than or equal to 300°C. In the above technical solution, the temperature resistance of the encapsulation layer is higher than the temperature under normal battery operation, making the encapsulation layer less likely to break under normal operation, thus preventing the oxygen-consuming material from failing; and the temperature resistance of the encapsulation layer is not higher than the emission temperature of the battery cell during thermal runaway, so that the encapsulation layer can break down quickly and timely to release the oxygen-consuming material, improving the timeliness and efficiency of oxygen consumption.

[0009] In some embodiments, the encapsulation layer is made of plastic. In the above technical solutions, the plastic material has high shape malleability, making it easy to form the oxygen-consuming component into any desired shape to match the installation within the accommodating space. Furthermore, the plastic material can rapidly break down upon contact with high-temperature emissions to release the oxygen-consuming material.

[0010] In some embodiments, the oxygen-consuming material is in powder or granular form. In the above technical solution, the oxygen-consuming material has a certain degree of fluidity; after the encapsulation layer is damaged, the internal oxygen-consuming material can quickly flow outward through the damaged opening and disperse, thereby fully contacting the oxygen in the containing space, which is beneficial for improving oxygen consumption efficiency.

[0011] In some embodiments, there are multiple battery cells, which form a row or multiple rows of battery packs arranged along a first direction. Each battery pack includes multiple battery cells arranged along a second direction. The oxygen-consuming element is configured in a one-to-one correspondence with each battery pack. The oxygen-consuming element extends along the second direction and is positioned opposite to the pressure relief portion of multiple battery cells within the same battery pack along a third direction. The first direction, the second direction, and the third direction intersect each other. In the above technical solution, when the pressure relief portion ejects emissions during thermal runaway, the emissions can accurately reach the oxygen-consuming element, enabling the oxygen-consuming element to consume oxygen promptly, improving oxygen consumption efficiency, and thus enhancing the fire suppression effect. Furthermore, each pressure relief portion ejecting emissions is not obstructed by other battery cells, and each can promptly trigger the oxygen-consuming element to consume oxygen.

[0012] In some embodiments, the oxygen-consuming component includes a plurality of first oxygen-consuming sections arranged along the second direction and a second oxygen-consuming section connecting two adjacent first oxygen-consuming sections. The first oxygen-consuming sections are opposite to the pressure relief section along the third direction, and the size of the first oxygen-consuming section along the third direction is larger than the size of the second oxygen-consuming section along the third direction. In the above technical solution, the size of the first oxygen-consuming section opposite to the pressure relief section is larger to meet the amount of oxygen consumed by the first oxygen-consuming section under the pressure relief state, while the size of the second oxygen-consuming section is smaller, which can reduce the total amount of oxygen-consuming material used to a certain extent and reduce the cost of the oxygen-consuming component.

[0013] In some embodiments, the battery further includes: a wiring harness separator, which is disposed within the receiving space and located on one side of the battery cell along a third direction; the oxygen-consuming component is mounted in the battery box; and the wiring harness separator has a clearance hole that extends through the third direction to avoid the oxygen-consuming component. In the above technical solution, the oxygen-consuming component is mounted in the battery box, which increases the space within the receiving space for mounting the oxygen-consuming component and reduces or avoids the wiring harness separator obstructing the oxygen-consuming component, allowing the emissions from the pressure relief section to directly hit the oxygen-consuming component, facilitating a timely response from the oxygen-consuming component.

[0014] In some embodiments, the dimension of the oxygen-consuming component along the third direction is greater than or equal to 20 mm and less than or equal to 50 mm. In the above technical solution, the dimension of the oxygen-consuming component along the third direction is relatively large to meet the oxygen consumption requirements, and the dimension of the oxygen-consuming component along the third direction is not too large to cause positional interference with other components or material waste.

[0015] In some embodiments, the oxygen-consuming component is bonded to the battery box; and / or, the battery box has a first mounting groove on the side facing the wiring harness isolation plate, and the oxygen-consuming component is at least partially embedded in the first mounting groove. In the above technical solution, the connection between the oxygen-consuming component and the battery box is simple, secure, and reliable, enabling the oxygen-consuming component to be stably maintained in a position opposite to the pressure relief section, ensuring timely and effective oxygen consumption.

[0016] In some embodiments, the battery further includes: a wiring harness separator, which is disposed within the receiving space and located on one side of the battery cell along a third direction, and the oxygen-consuming component is mounted on the wiring harness separator. In the above technical solution, the wiring harness separator is closer to the battery cell, which helps to bring the oxygen-consuming component closer to the pressure relief section. This allows for a faster response when the pressure relief section emits emissions, enabling more timely oxygen consumption, reducing the amount of oxygen-consuming material required, and improving the fire suppression effect.

[0017] In some embodiments, the dimension of the oxygen-consuming component along the third direction is greater than or equal to 10 mm and less than or equal to 20 mm. In the above technical solution, the dimension of the oxygen-consuming component along the third direction is small, making it less likely to interfere with the position of other components, and the dimension of the oxygen-consuming component along the third direction is not too small to affect the fire suppression effect.

[0018] In some embodiments, the wiring harness separator has a second mounting groove on the side facing the battery cell, and the oxygen-consuming component is at least partially embedded in the second mounting groove; and / or, the wiring harness separator is bonded to the oxygen-consuming component. In the above technical solution, the oxygen-consuming component can be held in a set position opposite to the pressure relief section, ensuring timely and effective oxygen consumption.

[0019] Secondly, embodiments of the present invention also provide an electrical device including the battery described above, the battery being used to provide electrical energy to the electrical device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the battery structure provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the second housing provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the mating structure of the first housing and multiple battery packs provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the first housing provided in an embodiment of the present invention;

[0024] Figures 5-6 An exploded view of a battery provided in the first embodiment of the present invention;

[0025] Figures 7-8 This is a schematic diagram of the mating structure of the second housing and the oxygen-consuming component provided in the first embodiment of the present invention;

[0026] Figures 9-10 This is a schematic diagram of the structure of the oxygen-consuming component provided in the first embodiment of the present invention;

[0027] Figure 11 for Figure 10 A cross-sectional view along the direction indicated by line AA;

[0028] Figures 12-13 An exploded view of a battery provided in the second embodiment of the present invention;

[0029] Figure 14 Exploded view of the wire harness isolation plate, electrical connector and oxygen-consuming component provided in the second embodiment of the present invention;

[0030] Figures 15-16 This is a schematic diagram of the mating structure of the wire harness isolation plate, electrical connector, and oxygen-consuming component provided in the second embodiment of the present invention;

[0031] Figures 17-18 This is a schematic diagram of the structure of the oxygen-consuming component provided in the second embodiment of the present invention;

[0032] Figure 19 This is a schematic diagram of the structure of a battery cell provided in an embodiment of the present invention;

[0033] Figure 20 This is a structural schematic diagram of a vehicle provided in an embodiment of the present invention.

[0034] Figure label:

[0035] Battery 100; Electrical device 200;

[0036] Battery box 10; storage space 101; first housing 11; second housing 12;

[0037] Battery pack 20; battery cell 21; pressure relief section 211; electrical connection section 212;

[0038] Oxygen-consuming component 30; First oxygen-consuming part 31; Second oxygen-consuming part 32; Encapsulation layer 33; Oxygen-consuming material 34;

[0039] Wire harness isolation plate 40; clearance hole 41; second mounting groove 42; mounting hole 43;

[0040] Electrical connector 50;

[0041] First direction F1; Second direction F2; Third direction F3. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order or hierarchy.

[0044] In this invention, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In this invention, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0047] In the embodiments of the present invention, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of the present invention shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on the present invention.

[0048] In this invention, "multiple" refers to two or more (including two).

[0049] In this invention, a battery refers to a single physical module comprising one or more individual battery cells to provide higher voltage and capacity. For example, the battery mentioned in this invention may include a battery module or a battery pack. Some batteries may include a battery case for encapsulating one or more individual battery cells or multiple battery modules. The battery case can reduce or prevent the influence of liquids or other foreign matter on the charging or discharging of the individual battery cells. Of course, some batteries may not require the aforementioned battery case and may be directly disposed within the battery mounting compartment of the electrical device; in other words, the battery mounting compartment serves as the battery case.

[0050] In this invention, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and this invention is not limited to these categories. The battery cell may be cylindrical, flat, cuboid, or other shapes, and this invention is not limited to these shapes either. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this invention is not limited to these types either.

[0051] For example, a battery cell may include a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated positive current collector, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc.

[0052] The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the negative current collector without the negative active material layer protrudes from the one with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0053] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of the present invention are not limited thereto.

[0054] A battery cell can be equipped with terminals or tabs that connect to the terminals, serving as the electrical connection points for the battery cell. Furthermore, the battery cell can have a pressure relief section. In the event of excessive internal pressure (such as thermal runaway), the pressure relief section releases substances (such as gases, liquids, or particulate matter) from inside the battery cell, reducing the internal pressure and preventing rapid pressurization that could lead to dangerous accidents such as battery cell explosion. For example, the pressure relief section can be an explosion-proof valve, an explosion-proof plate, etc.

[0055] The exhaust gases emitted from the pressure relief section can reach extremely high temperatures, such as over 300°C, which can cause fires. The high temperatures can damage the battery compartment, leading to a fire that can spread and cause severe economic losses, and even endanger lives. Some related technologies use mica sheets to separate the pressure relief section from the battery compartment, which can extend escape time to some extent; however, the effect of extending the fire's duration is limited, and significant risks to life and property still exist.

[0056] Based on this, embodiments of this application propose a battery 100, which includes a battery case 10, battery cells 21, and an oxygen-consuming component 30. The battery case 10 has a receiving space 101, the battery cells 21 are disposed within the receiving space 101, and the battery cells 21 have a pressure relief portion 211. The oxygen-consuming component 30 is disposed within the receiving space 101, and the oxygen-consuming component 30 is used to consume oxygen in the receiving space 101 when the pressure relief portion 211 is in a pressure-relieved state.

[0057] In the battery 100 with the above-described structure, the oxygen-consuming component 30 consumes the oxygen in the containment space 101 when the pressure relief section 211 is under pressure relief, which quickly reduces the oxygen content in the environment necessary for ignition, thereby making it less likely for the high-temperature emissions ejected from the pressure relief section 211 to ignite, and effectively prolonging the ignition and combustion time.

[0058] The battery 100 disclosed in the embodiments of the present invention can be used, but is not limited to, in electrical devices 200 such as vehicles, ships or aircraft. It can be used to form the power system of the electrical device 200, such as the battery 100 disclosed in the present invention, so as to ensure the safety and reliability of the electrical device 200.

[0059] For example, the electrical device 200 disclosed in this embodiment of the invention may be, but is not limited to, vehicles, mobile phones, tablets, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles may be fuel-powered vehicles, natural gas vehicles, new energy vehicles, or rail vehicles; new energy vehicles may be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0060] Hereinafter, with reference to the accompanying drawings, a battery 100 according to an embodiment of the present invention will be described.

[0061] Please refer to Figures 1-6 and Figures 12-13 , Figure 1 This is a schematic diagram of the structure of the battery 100 provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the second housing 12 provided in an embodiment of the present invention; Figure 3 A schematic diagram of the mating structure of the first housing 11 and the plurality of battery packs 20 provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first housing 11 provided in an embodiment of the present invention; Figures 5-6 An exploded view of the battery 100 provided in the first embodiment of the present invention; Figures 12-13 This is an exploded view of a battery 100 provided in a second embodiment of the present invention. The battery 100 includes a battery case 10 and individual battery cells 21.

[0062] Specifically, the battery box 10 has a receiving space 101, the battery cell 21 is disposed in the receiving space 101, and the battery cell 21 has a pressure relief part 211.

[0063] The battery box 10 can be a single piece or it can consist of multiple separate parts that fit together. For example... Figures 1-6 and Figures 12-13 As shown, the battery box 10 may include a cooperating first housing 11 and a second housing 12. The first housing 11 defines a first space, and the second housing 12 defines a second space. The first space and the second space constitute a receiving space 101. Of course, in some other embodiments, the first housing 11 defines the first space to constitute the receiving space 101, and the second housing 12 is plate-shaped to cover the end opening of the receiving space 101. In still other embodiments, the second housing 12 defines the second space to constitute the receiving space 101, and the first housing 11 is plate-shaped to cover the end opening of the receiving space 101. All of these are within the protection scope of the present invention.

[0064] The battery cell 21 is housed within the housing space 101, enabling the battery box 10 to protect the battery cell 21 and reduce or prevent external liquids or other foreign objects from affecting the charging or discharging of the battery cell 21. Simultaneously, in the event of thermal runaway of the battery cell 21, the battery box 10 can, to some extent, mitigate the indiscriminate ejection and transmission of high-temperature emissions to the outside of the battery 100, thereby reducing damage to other parts of the electrical device 200, such as reducing the high-temperature impact on the vehicle's passenger compartment.

[0065] Continue to refer to Figures 5-6 and Figures 12-13 The battery 100 may also include an oxygen-consuming element 30. The oxygen-consuming element 30 is disposed within the receiving space 101 and is used to consume oxygen in the receiving space 101 when the pressure relief section 211 is in a pressure-relieved state.

[0066] Oxygen-consuming component 30, that is, a component that can consume oxygen. Oxygen-consuming component 30 can be an entire oxygen-consuming material 34, or a part of oxygen-consuming material 34.

[0067] For example, the oxygen-consuming component 30 includes an oxygen-consuming material 34, which includes, but is not limited to, one or more combinations of red phosphorus, carbon powder, and cobalt crystals. Red phosphorus reacts with oxygen to produce phosphorus pentoxide, carbon powder reacts with the oxygen-consuming material 34 to produce carbon dioxide or carbon monoxide, and cobalt crystals react with oxygen to produce cobalt oxide or cobalt tetroxide. The heat generated during the reaction of red phosphorus, carbon powder, and cobalt crystals with oxygen is lower than the heat of the emissions from the pressure relief section 211, preventing the oxygen-consuming process from worsening the fire. Furthermore, the intense reaction with oxygen rapidly consumes oxygen, thus suppressing fire more quickly and promptly.

[0068] Furthermore, the oxygen-consuming component 30 is configured to consume the oxygen within the containment space 101 when the pressure relief section 211 is in a depressurized state. When the pressure relief section 211 is in a depressurized state, the battery cell 21 ejects high-temperature emissions into the containment space 101 through the pressure relief section 211. These high-temperature emissions pose a risk of ignition. At this time, the oxygen-consuming component 30 consumes the oxygen within the containment space 101, depriving the environment within the containment space 101 of the oxygen necessary for ignition. This effectively suppresses ignition or quickly extinguishes a fire, which helps reduce the spread of thermal runaway, minimizes losses caused by thermal runaway, and provides more time for personnel to escape, greatly improving safety.

[0069] According to the embodiment of the present invention, the battery 100 provides an oxygen-consuming element 30 in the housing space 101 for accommodating the battery cell 21. When the pressure relief part 211 is in a depressurized state, the oxygen-consuming element 30 consumes the oxygen in the housing space 101, thereby reducing the oxygen content in the housing space 101. This effectively suppresses fire caused by pressure relief and provides more time for property rescue and personnel escape in the event of thermal runaway.

[0070] According to some embodiments of the present invention, please refer to Figures 7-11 and Figures 17-18 , Figures 7-8 A schematic diagram of the mating structure of the second housing 12 and the oxygen-consuming component 30 provided in the first embodiment of the present invention; Figures 9-10 This is a schematic diagram of the structure of the oxygen-consuming component 30 provided in the first embodiment of the present invention; Figure 11 for Figure 10 A cross-sectional view along the direction indicated by line AA; Figures 17-18 This is a schematic diagram of the structure of the oxygen-consuming component 30 provided in the second embodiment of the present invention. The oxygen-consuming component 30 includes an oxygen-consuming material 34 and an encapsulation layer 33 for encapsulating the oxygen-consuming material 34. The temperature resistance of the encapsulation layer 33 is lower than the temperature of the discharge from the pressure relief section 211.

[0071] The encapsulation layer 33 is used to encapsulate the oxygen-consuming material 34. That is, the encapsulation layer 33 defines a closed space, and the oxygen-consuming material 34 is filled in the closed space to isolate it from the air inside the receiving space 101 and outside the encapsulation layer 33. It should be noted that the encapsulation layer 33 can be made of a rigid material to make the shape of the oxygen-consuming component 30 after encapsulation regular, so as to facilitate more stable arrangement and fixation within the receiving space 101; or, the encapsulation layer 33 can be made of a soft material to allow the oxygen-consuming component 30 to deform and more flexibly adapt to the shape of the receiving space 101.

[0072] The temperature resistance of the encapsulation layer 33 refers to the lowest temperature at which the encapsulation layer 33 will undergo thermal deformation. When the actual temperature is lower than the temperature resistance of the encapsulation layer 33, the structure of the encapsulation layer 33 remains intact, thereby maintaining the oxygen-consuming material 34 and isolating it from the air in the containment space 101, thus maintaining the oxygen-consuming capacity of the oxygen-consuming material 34. For example, in some embodiments, the battery box 10 is equipped with a balance valve to balance the air pressure between the containment space 101 of the battery box 10 and the outside air, that is, outside air can enter the containment space 101 through the balance valve. By setting the encapsulation layer 33, the oxygen-consuming material 34 is less likely to react with oxygen and fail when thermal runaway does not occur, thus affecting oxygen consumption during thermal runaway. When the actual temperature is greater than or equal to the temperature resistance of the encapsulation layer 33, the structure of the encapsulation layer 33 is destroyed, and the oxygen-consuming material 34 is exposed in the containment space 101 and reacts with the oxygen in the containment space 101, thereby consuming the oxygen in the containment space 101.

[0073] By ensuring that the temperature resistance of the encapsulation layer 33 is lower than the temperature of the discharge from the pressure relief section 211, the encapsulation layer 33 remains intact when the battery cell 21 does not experience thermal runaway, and the oxygen-consuming material 34 is less likely to fail. Furthermore, when the thermal runaway pressure relief section 211 discharges high-temperature discharge, the oxygen-consuming material 34 is released in a timely manner to consume oxygen and suppress fire.

[0074] In some embodiments, the temperature resistance of the encapsulation layer 33 is greater than or equal to 100°C and less than or equal to 300°C. Within this temperature range, the temperature resistance of the encapsulation layer 33 is higher than the temperature under normal operating conditions of the battery 100, making it less likely for the encapsulation layer 33 to break down under normal operating conditions, thus preventing the oxygen-consuming material 34 from failing. Furthermore, the temperature resistance of the encapsulation layer 33 is not higher than the emission temperature of the battery cell 21 during thermal runaway, enabling the encapsulation layer 33 to break down quickly and promptly and release the oxygen-consuming material 34, improving the timeliness and efficiency of oxygen consumption. In some specific embodiments, the temperature resistance of the encapsulation layer 33 can be 120°C, 150°C, 200°C, 250°C, and 290°C, etc.

[0075] For example, in some specific embodiments, the encapsulation layer 33 may be made of plastic. Plastic materials are highly malleable, allowing the oxygen-consuming component 30 to be easily formed into any desired shape to match the installation within the receiving space 101, for example... Figure 9 and Figure 17 The oxygen-consuming component 30 is formed into an elongated shape with multiple grooves. Furthermore, the plastic material can rapidly break down upon contact with high-temperature emissions to release the oxygen-consuming material 34.

[0076] In some embodiments of the present invention, the oxygen-consuming material 34 is in a powder or granular form or other fluid form. After the encapsulation layer 33 is damaged, the internal oxygen-consuming material 34 can quickly flow outward through the damaged opening and disperse, thereby making full contact with the oxygen in the containing space 101, which is beneficial to improving oxygen consumption efficiency.

[0077] Furthermore, in the embodiment where the oxygen-consuming component 30 and the pressure relief portion 211 are arranged opposite each other, the broken opening formed by the encapsulation layer 33 is opposite to the pressure relief portion 211 in the pressure relief state. The oxygen-consuming material 34 flowing through the flow allows the oxygen-consuming material 34 opposite to the pressure relief portion 211 in the pressure relief state to flow to the vicinity of the pressure relief portion 211 in a timely manner to consume the nearby oxygen and improve the fire suppression effect. The oxygen-consuming material 34 opposite to other pressure relief portions 211 can also flow out through the broken opening through the flow, so that the oxygen-consuming material 34 that actually plays the role of oxygen consumption is sufficient, further improving the fire suppression effect.

[0078] According to some embodiments of the present invention, please refer to Figure 3 , Figure 5 and Figures 12-13 There are multiple battery cells 21. Multiple battery cells 21 constitute a row of battery packs 20, and the battery pack 20 includes multiple battery cells 21 arranged along the second direction F2. Alternatively, multiple battery cells 21 constitute multiple rows of battery packs 20, and the multiple rows of battery packs 20 are arranged along the first direction F1. The battery packs 20 include multiple battery cells 21 arranged along the second direction F2, so that all battery cells 21 form an array arrangement structure.

[0079] Oxygen-consuming components 30 are arranged in a one-to-one correspondence with battery packs 20, that is, the number of battery packs 20 is equal to the number of oxygen-consuming components 30, and the battery 100 includes one or more oxygen-consuming components 30. The oxygen-consuming components 30 extend along the second direction F2 and are arranged opposite to the pressure relief portions 211 of multiple battery cells 21 in the same battery pack 20 along the third direction F3, and the first direction F1, the second direction F2 and the third direction F3 intersect each other.

[0080] The oxygen-consuming component 30 extends along the second direction F2. This should be interpreted broadly. In the second direction F2, the oxygen-consuming component 30 can extend along a straight line, or along a curved or broken path.

[0081] The oxygen-consuming component 30 and the pressure relief sections 211 of multiple battery cells 21 in the same battery pack 20 are arranged opposite each other along a third direction F3, that is, the projection of the pressure relief section 211 of the same battery pack 20 along the third direction F3 at least partially overlaps with the oxygen-consuming component 30. Therefore, when the pressure relief section 211 ejects emissions during thermal runaway, the emissions can be accurately sprayed onto the oxygen-consuming component 30, enabling the oxygen-consuming component 30 to consume oxygen in a timely manner, improving oxygen consumption efficiency, and thus enhancing the fire suppression effect.

[0082] The first direction F1, the second direction F2, and the third direction F3 intersect each other in pairs. Intersections include being perpendicular to each other or forming an angle. For example... Figure 5 The first direction F1 is left-right, the second direction F2 is front-back, and the third direction F3 is up-down. By adopting the above directional arrangement, the arrangement direction of the multiple battery cells 21 and the corresponding direction of the pressure relief section 211 and the oxygen consumption component 30 do not interfere with each other, so that when each pressure relief section 211 emits emissions, it will not be blocked by other battery cells 21, and the oxygen consumption component 30 can be triggered in time to consume oxygen.

[0083] In some embodiments of the present invention, the dimensions of the oxygen-consuming element 30 along the third direction F3 can be uniform throughout or can be locally thickened or locally thinned as needed. For example, in some embodiments, please refer to... Figures 9-10 and Figures 17-18 The oxygen-consuming component 30 includes a second oxygen-consuming part 32 and a plurality of first oxygen-consuming parts 31. The plurality of first oxygen-consuming parts 31 are arranged along a second direction F2, and the second oxygen-consuming part 32 connects two adjacent first oxygen-consuming parts 31. The first oxygen-consuming parts 31 are opposite to the pressure relief part 211 along a third direction F3, and the size of the first oxygen-consuming part 31 along the third direction F3 is larger than the size of the second oxygen-consuming part 32 along the third direction F3.

[0084] The second oxygen-consuming part 32 can be one or more. For example, the oxygen-consuming component 30 includes two first oxygen-consuming parts 31 and one second oxygen-consuming part 32, or the oxygen-consuming component 30 includes at least three first oxygen-consuming parts 31 and at least two second oxygen-consuming parts 32.

[0085] The first oxygen-consuming section 31 and the second oxygen-consuming section 32 are arranged alternately in the second direction F2.

[0086] The first oxygen-consuming section 31 and the pressure-relieving section 211 are opposite each other along the third direction F3, that is, the projection of the first oxygen-consuming section 31 along the third direction F3 overlaps at least partially with the pressure-relieving section 211, so that the emissions ejected from the pressure-relieving section 211 can directly impact the first oxygen-consuming section 31. The projection of the second oxygen-consuming section 32 along the third direction F3 can be at least partially offset from the pressure-relieving section 211, that is, they do not overlap.

[0087] The first oxygen-consuming part 31, opposite to the pressure relief part 211, is relatively large to accommodate the amount of oxygen consumed by the first oxygen-consuming part 31 under pressure relief conditions. Furthermore, when the oxygen-consuming material 34 has a certain degree of fluidity, the second oxygen-consuming part 32, connected to the first oxygen-consuming part 31, can assist in oxygen consumption, thereby improving oxygen consumption efficiency. In addition, the second oxygen-consuming part 32 is smaller, which can reduce the total amount of oxygen-consuming material 34 used to a certain extent, thus lowering the cost of the oxygen-consuming component 30.

[0088] It should be noted that, in Figure 9 and Figure 17 In the example shown, the surfaces of the first oxygen-consuming part 31 and the second oxygen-consuming part 32 along the third direction F3 are coplanar, so that the oxygen-consuming component 30 can be stably installed in the receiving space 101, and the surfaces on the other side are not coplanar to form a groove. However, the structure of the first oxygen-consuming part 31 and the second oxygen-consuming part 32 is not limited to this. For example, the surfaces of the first oxygen-consuming part 31 and the second oxygen-consuming part 32 along the third direction F3 may not be coplanar.

[0089] In some embodiments where the oxygen-consuming component 30 includes an encapsulation layer 33 and an oxygen-consuming material 34, the encapsulation layer 33 can encapsulate the oxygen-consuming material 34 by thermoforming, while forming a first oxygen-consuming part 31 and a second oxygen-consuming part 32 of different sizes.

[0090] According to some embodiments of the present invention, please refer to Figures 5-6 and Figures 12-16 , Figure 14 Exploded view of wire harness isolation plate 40, electrical connector 5050 and oxygen-consuming component 30 provided in the second embodiment of the present invention; Figures 15-16 This is a schematic diagram of the mating structure of the wire harness isolation plate 40, electrical connector 5050, and oxygen-consuming component 30 provided in the second embodiment of the present invention. The battery 100 may further include the wire harness isolation plate 40, which is disposed within the receiving space 101 and located on one side of the battery cell 21 along the third direction F3.

[0091] In order for the battery 100 to achieve normal power transmission, the battery cells 21 inside the battery 100 need to be connected in series, parallel or mixed via electrical connectors 5050 (such as busbars or terminals). In order to collect the temperature and voltage of the battery 100, the wiring harness needs to be connected to the busbar, and the electrical connectors 5050 and the wiring harness connected thereto need to be isolated by the wiring harness isolation plate 40.

[0092] For example Figure 5 and Figure 12 As shown, a wire harness isolation plate 40 is provided between the battery cell 21 and the second housing 12. Figure 19The diagram shown is a structural schematic of the battery cell 21 provided in an embodiment of the present invention. The battery cell 21 has an electrical connection part 212 on the side facing the wire harness isolation plate 40 along the third direction F3. The electrical connector 5050 and the electrical connection part 212 are electrically connected by welding or other means to realize the series, parallel or mixed connection between multiple battery cells 21.

[0093] In some embodiments that include the wire harness isolation plate 40, please refer to Figures 5-8 The oxygen-consuming component 30 can be installed in the battery box 10, for example, in the second housing 12 of the battery box 10. The wiring harness isolation plate 40 is provided with a clearance hole 41 that extends along a third direction F3 to avoid the oxygen-consuming component 30.

[0094] The oxygen-consuming component 30 is installed in the battery box 10, which increases the space within the housing 101 for installing the oxygen-consuming component 30. For example, on the third-direction F3, the entire space between the second housing 12 and the pressure relief part 211 can be used to accommodate the oxygen-consuming component 30. This makes it easier to adjust the oxygen consumption capacity of the oxygen-consuming component 30, which is beneficial to improving the oxygen consumption effect and fire suppression effect of the oxygen-consuming component 30.

[0095] The clearance hole 41 for the oxygen-consuming component 30 should be interpreted broadly. That is, the oxygen-consuming component 30 can extend into or pass through the clearance hole 41, or the oxygen-consuming component 30 can be located entirely on the side of the clearance hole 41 facing away from the battery cell 21. This reduces or avoids the wiring harness separator 40 obstructing the oxygen-consuming component 30, allowing the emissions from the pressure relief section 211 to directly hit the oxygen-consuming component 30, facilitating a timely response from the oxygen-consuming component 30. Furthermore, in embodiments where the oxygen-consuming material 34 is fluid, the clearance hole 41 allows the oxygen-consuming material 34 of the oxygen-consuming component 30 to flow smoothly to the pressure relief section 211 for oxygen consumption.

[0096] It should be noted that the clearance hole 41 can be as follows: Figure 5 The dimensions shown match those of the oxygen-consuming component 30, for example... Figure 5 The shape shown is an elongated strip with the same shape as the oxygen-consuming component 30. However, the structure of the clearance hole 41 is not limited to this. For example, the oxygen-consuming component 30 can correspond to multiple clearance holes 41, and the clearance holes 41 are arranged one-to-one with the pressure relief part 211. For example, in some embodiments that include the first oxygen-consuming part 31 and the second oxygen-consuming part 32, there can be multiple clearance holes 41 arranged along the second direction F2, and the multiple clearance holes 41 are arranged one-to-one with multiple first oxygen-consuming parts 31. This is also within the protection scope of the present invention.

[0097] In some embodiments, please refer to Figure 9The dimension L1 of the oxygen-consuming component 30 along the third direction F3 is greater than or equal to 20mm and less than or equal to 50mm, i.e., 20mm≤L1≤50mm. For example, the dimension of the oxygen-consuming component 30 along the third direction F3 can be 20mm, 30mm, 40mm, and 50mm, etc. Within the above dimension range, the dimension of the oxygen-consuming component 30 along the third direction F3 is relatively large to meet the oxygen consumption requirements, and the dimension of the oxygen-consuming component 30 along the third direction F3 will not be too large to cause positional interference with other components or material waste.

[0098] The connection method between the oxygen-consuming component 30 and the battery box 10 can be flexibly set. For example, one or a combination of several methods such as adhesive bonding, snap-fit, and embedded connection can be used.

[0099] For example Figure 7 and Figure 8 As shown, the oxygen-consuming component 30 is bonded to the battery box 10. The connection method is simple and the fixation is firm and reliable, so that the oxygen-consuming component 30 can be stably maintained in the position opposite to the pressure relief part 211, so that the oxygen consumption is timely and effective.

[0100] For example, the battery box 10 may have a first mounting groove on the side facing the wiring harness isolation plate 40, and the oxygen-consuming component 30 may be at least partially embedded in the first mounting groove. For instance, the second housing 12 of the battery box 10 may have a first mounting groove, and the oxygen-consuming component 30 may be embedded in the first mounting groove along the third direction F3. By providing the first mounting groove, not only can the space available for accommodating the oxygen-consuming component 30 in the third direction F3 be increased, thereby increasing the volume and oxygen-consuming capacity of the oxygen-consuming component 30, but it also facilitates the use of the groove wall of the first mounting groove to limit the oxygen-consuming component 30 in the direction perpendicular to the third direction F3, keeping the oxygen-consuming component 30 in a set position opposite to the pressure relief part 211, ensuring timely and effective oxygen consumption.

[0101] Of course, the oxygen-consuming component 30 and the battery box 10 can be connected by either adhesive bonding or by embedding into the first mounting groove, which is also within the scope of protection of this invention.

[0102] In some embodiments that include the wire harness isolation plate 40, please refer to Figures 12-16 The oxygen-consuming component 30 can be installed on the wiring harness isolation plate 40. The wiring harness isolation plate 40 is close to the battery cell 21, which helps to bring the oxygen-consuming component 30 closer to the pressure relief part 211. This allows for a faster response when the pressure relief part 211 emits emissions, enabling it to start consuming oxygen more promptly, reducing the amount of oxygen-consuming material 34 required, and improving the fire suppression effect.

[0103] In some embodiments, please refer to Figure 17The dimension L2 of the oxygen-consuming component 30 along the third direction F3 is greater than or equal to 10 mm and less than or equal to 20 mm, i.e., 10 mm ≤ L2 ≤ 20 mm. For example, the dimension F3 of the oxygen-consuming component 30 along the third direction can be 10 mm, 12 mm, 15 mm, 18 mm, and 20 mm, etc. Within the above dimension range, the dimension F3 of the oxygen-consuming component 30 along the third direction is relatively small, making it less likely to interfere with the position of other components, and the dimension F3 of the oxygen-consuming component 30 along the third direction is not too small to affect the fire suppression effect.

[0104] The connection method between the oxygen-consuming component 30 and the wire harness isolation plate 40 can be flexibly set. For example, one or a combination of several methods such as adhesive bonding, snap-fit, and embedded connection can be used.

[0105] For example Figures 14-16 As shown, the wiring harness separator 40 has a second mounting groove 42 on the side facing the battery cell 21, and the oxygen-consuming component 30 is at least partially embedded in the second mounting groove 42. By providing the second mounting groove 42, not only can the space between the wiring harness separator 40 and the battery cell 21 for accommodating the oxygen-consuming component 30 be increased, thereby increasing the volume and oxygen consumption capacity of the oxygen-consuming component 30, but it is also beneficial to use the groove wall of the second mounting groove 42 to limit the oxygen-consuming component 30 in the direction perpendicular to the third direction F3, so that the oxygen-consuming component 30 is kept in a set position and opposite to the pressure relief part 211, so that oxygen consumption is timely and effective.

[0106] For example, the wire harness isolation plate 40 is bonded to the oxygen-consuming component 30. The connection method is simple, and the fixation is firm and reliable, so that the oxygen-consuming component 30 can be stably maintained in the position opposite to the pressure relief part 211, so that oxygen consumption is timely and effective.

[0107] Of course, the oxygen-consuming component 30 and the wire harness isolation plate 40 can be connected by either adhesive bonding or by embedding into the second mounting groove 42, which is also within the scope of protection of this invention.

[0108] In some embodiments, such as Figures 14-16 As shown, the wire harness isolation plate 40 may also be provided with a mounting hole 43, which penetrates the wire harness isolation plate 40 along a third direction F3. An electrical connector 5050 may be located within the mounting hole 43, and the electrical connector 5050 is used to connect with the electrical connection portion 212 of the battery cell 21 to realize series, parallel, or mixed connection of the battery cells 21. By providing the mounting hole 43, the electrical connection can be limited, and the connection operation between the electrical connector 5050 and the electrical connection portion 212 can be facilitated.

[0109] According to a second aspect embodiment of the present invention, the electrical device 200 includes a battery 100 according to the first aspect embodiment described above, the battery 100 being used to provide electrical energy to the electrical device 200. Thus, by employing the battery 100, the oxygen-consuming component 30 consumes the oxygen in the containment space 101 when the pressure relief section 211 is in a depressurized state, thereby reducing the oxygen content in the containment space 101 and effectively suppressing fire caused by pressure relief, providing more time for property rescue and personnel escape in the event of thermal runaway.

[0110] Optionally, such as Figure 20 As shown, when the battery 100 is used in a vehicle, the battery 100 can be located at the bottom, front, or rear of the vehicle. The battery 100 can be used to power the vehicle; for example, the battery 100 can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor, the controller being used to control the battery 100 to power the motor, for example, to meet the vehicle's power needs during starting, navigation, and driving.

[0111] The following description, in conjunction with the accompanying drawings, describes a battery 100 and a vehicle having the same, according to two specific embodiments of the present invention.

[0112] Please refer to Figure 20 The vehicle according to an embodiment of the present invention includes a battery 100 according to an embodiment of the present invention, the battery 100 being mounted on the bottom of the vehicle.

[0113] Please refer to Figures 1-6 , Figures 9-13 and Figure 19 According to an embodiment of the present invention, the battery 100 includes a battery case 10, a plurality of battery packs 20, a wiring harness separator 40, and a plurality of oxygen-consuming components 30. The battery case 10 includes a first housing 11 and a second housing 12, with the second housing 12 covering the first housing 11 to define a receiving space 101. The plurality of battery packs 20 are arranged along a first direction F1 within the receiving space 101 of the battery case 10, and each battery pack 20 includes a plurality of battery cells 21 arranged along a second direction F2. The upper side of each battery cell 21 is provided with an electrical connection portion 212 and a pressure relief portion 211. The wiring harness separator 40 is located within the receiving space 101 and between the battery cells 21 and the second housing 12. The plurality of oxygen-consuming components 30 are arranged one-to-one with the plurality of battery packs 20, and each oxygen-consuming component 30 includes a plurality of first oxygen-consuming portions 31 and a plurality of second oxygen-consuming portions 32 arranged alternately along the second direction F2. The oxygen-consuming component 30 includes an encapsulation layer 33 and an oxygen-consuming material 34 encapsulated by the encapsulation layer 33. The encapsulation layer 33 is made of plastic, and the oxygen-consuming material 34 is a cobalt crystal that can rapidly consume oxygen.

[0114] Please refer to Figures 5-8In the first embodiment of the present invention, the oxygen-consuming component 30 is integrated on the lower side of the second housing 12 and has a thickness of 20-50 mm along the third direction F3. The wiring harness isolation plate 40 is provided with a plurality of clearance holes 41 corresponding one-to-one with the plurality of oxygen-consuming components 30, so that the plurality of first oxygen-consuming parts 31 of the oxygen-consuming component 30 can be arranged opposite to the pressure relief parts 211 of the plurality of battery cells 21 of the same battery pack 20.

[0115] Please refer to Figures 12-16 In the second embodiment of the present invention, the oxygen-consuming component 30 is integrated on the lower side of the wire harness isolation plate 40 and has a thickness of 10 to 20 mm along the third direction F3.

[0116] The oxygen-consuming component 30 is positioned directly above the pressure relief section 211. When the battery cell 21 experiences thermal runaway, the pressure relief section 211 ejects emissions. The emissions or the resulting flames can ignite the encapsulation layer 33 of the oxygen-consuming component 30 immediately, rapidly releasing the oxygen-consuming material 34, thereby suppressing the fire of the battery 100 and extending the escape time for personnel.

[0117] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0118] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A battery, characterized in that, A battery box having a housing space and equipped with a balancing valve to balance the air pressure between the housing space and the outside air pressure; A battery cell, wherein the battery cell is disposed within the receiving space and has a pressure relief section; An oxygen-consuming component is disposed within the containment space and is used to consume oxygen within the containment space when the pressure relief section is in a depressurized state. The oxygen-consuming component includes an oxygen-consuming material and an encapsulation layer for encapsulating the oxygen-consuming material. The temperature resistance of the encapsulation layer is lower than the temperature of the discharge from the pressure relief section. The oxygen-consuming component is disposed opposite to the pressure relief section.

2. The battery as described in claim 1, characterized in that, The oxygen-consuming component includes an oxygen-consuming material, which includes one or more of the following: red phosphorus, carbon powder, and cobalt crystals.

3. The battery as described in claim 1, characterized in that, The temperature resistance of the encapsulation layer is greater than or equal to 100°C and less than or equal to 300°C.

4. The battery as described in claim 1, characterized in that, The encapsulation layer is made of plastic.

5. The battery as described in claim 1, characterized in that, The oxygen-consuming material is in powder or granular form.

6. The battery as claimed in claim 1, characterized in that, The battery cell is a plurality of cells, and the plurality of cells form a row or a multi-row battery pack arranged along a first direction. The battery pack includes a plurality of cells arranged along a second direction. The oxygen-consuming element is provided in a one-to-one correspondence with the battery pack. The oxygen-consuming element extends along the second direction and is provided opposite to the pressure relief portion of the plurality of cells in the same battery pack along a third direction. The first direction, the second direction and the third direction intersect each other.

7. The battery as described in claim 6, characterized in that, The oxygen-consuming component includes a plurality of first oxygen-consuming parts arranged along the second direction and a second oxygen-consuming part connecting two adjacent first oxygen-consuming parts. The first oxygen-consuming parts are opposite to the pressure relief part along the third direction, and the size of the first oxygen-consuming parts along the third direction is larger than the size of the second oxygen-consuming parts along the third direction.

8. The battery as described in any one of claims 1-7, characterized in that, Also includes: A wire harness isolation plate is disposed within the accommodating space and located on one side of the battery cell along a third direction. The oxygen-consuming component is installed in the battery box. The wire harness isolation plate is provided with a clearance hole that penetrates along the third direction and is used to avoid the oxygen-consuming component.

9. The battery as claimed in claim 8, characterized in that, The oxygen-consuming component has a dimension along the third direction that is greater than or equal to 20 mm and less than or equal to 50 mm.

10. The battery as claimed in claim 8, characterized in that, The oxygen-consuming component is bonded to the battery box; and / or The battery box has a first mounting groove on the side facing the wiring harness isolation plate, and the oxygen-consuming component is at least partially embedded in the first mounting groove.

11. The battery as claimed in any one of claims 1-7, characterized in that, Also includes: A wire harness separator is disposed within the accommodating space and located on one side of the battery cell along a third direction, and the oxygen-consuming component is mounted on the wire harness separator.

12. The battery as claimed in claim 11, characterized in that, The oxygen-consuming component has a dimension in the third direction that is greater than or equal to 10 mm and less than or equal to 20 mm.

13. The battery as claimed in claim 11, characterized in that, The wiring harness separator has a second mounting groove on the side facing the battery cell, and the oxygen-consuming component is at least partially embedded in the second mounting groove; and / or, The wire harness isolation plate is bonded to the oxygen-consuming component.

14. An electrical appliance, characterized in that, Includes the battery as described in any one of claims 1-13, the battery being used to provide electrical energy to the electrical device.

Images