Battery, power consuming device, method and device for manufacturing a battery

Abstract

The application provides a battery, a power utilization device, a method and a device for preparing a battery, and can enhance the safety of the battery. The battery comprises a battery monomer (20), a first wall (201) of the battery monomer (20) is provided with a pressure relief mechanism (213), a fire-fighting pipeline (30) is used for containing a fire-fighting medium and is used for discharging the fire-fighting medium when the pressure relief mechanism (213) is actuated, and a fixing piece (40) is arranged between the first wall (201) and the fire-fighting pipeline (30), wherein the fire-fighting pipeline (30) comprises a first limiting part (310), the fixing piece (40) comprises a second limiting part (410), and the two limiting parts are matched with each other to limit the fire-fighting pipeline (30) in a first direction (x) and a second direction (y), the first direction (x) is perpendicular to the first wall (201), and the second direction (y) is parallel to the first wall (201) and perpendicular to the extension direction of the fire-fighting pipeline (30). Through the scheme, the fire-fighting pipeline can be stably arranged in the battery, so that the safety performance of the battery is enhanced.

Description

Technical Field

[0001] This application relates to the field of batteries, and more specifically, to a battery, an electrical device, a method and apparatus for manufacturing a battery. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. And for electric vehicles, battery technology is a crucial factor in their development.

[0003] In the development of battery technology, besides improving battery performance, safety is also a crucial issue that cannot be ignored. If battery safety cannot be guaranteed, then the battery is unusable. Therefore, how to enhance battery safety is a pressing technical problem that needs to be solved in battery technology. Summary of the Invention

[0004] This application provides a battery, an electrical device, a method for manufacturing a battery, and an apparatus that can enhance battery safety.

[0005] In a first aspect, a battery is provided, comprising: a battery cell including a first wall, the first wall having a pressure relief mechanism for actuating to release internal pressure when the internal pressure or temperature of the battery cell reaches a threshold; a fire-fighting conduit for containing fire-fighting medium, the fire-fighting conduit for discharging the fire-fighting medium when the pressure relief mechanism is actuated; and a fixing member disposed between the first wall and the fire-fighting conduit for fixing the fire-fighting conduit; wherein the fire-fighting conduit includes a first limiting portion, the fixing member includes a second limiting portion, the first limiting portion and the second limiting portion cooperating with each other to limit the fire-fighting conduit in a first direction and a second direction, the first direction being perpendicular to the first wall, and the second direction being parallel to the first wall and perpendicular to the extension direction of the fire-fighting conduit.

[0006] The technical solution of this application embodiment, by installing a fire-fighting pipe in the battery, allows for the discharge of fire-fighting medium when the pressure relief mechanism of the battery cell is activated. This cools the discharge from the battery cell and even the internal structure of the battery cell, improving the battery's safety performance. Furthermore, the fire-fighting pipe is equipped with a first limiting part, and a fixing component is also installed in the battery. This fixing component has a second limiting part. The first and second limiting parts cooperate to limit the fire-fighting pipe in multiple directions, ensuring its stable installation within the battery and providing reliable fire-fighting and temperature regulation effects, thereby enhancing the battery's safety performance.

[0007] In some possible implementations, the first limiting part is a single claw structure, which includes a connecting part and a first claw part. The connecting part is formed by the pipe wall of the fire-fighting pipe extending along the second direction. The first claw part is connected to the connecting part and extends toward the battery cell. The first claw part is engaged with the second limiting part.

[0008] The technical solution of this embodiment designs the first limiting part on the fire-fighting pipeline as a single claw structure, and it is snapped into the second limiting part on the fixing member. While ensuring the connection stability between the first limiting part and the second limiting part, it can be conveniently installed on the fire-fighting pipeline, thereby improving the production efficiency of the fire-fighting pipeline.

[0009] In some possible implementations, the second limiting part is a slot structure, which includes a first slot wall and a second slot wall arranged along a second direction. The first slot wall and the second slot wall are used to clamp the first claw part to limit the fire pipe in the first direction and the second direction.

[0010] The technical solution of this embodiment designs the second limiting part on the fixing member as a slot structure that cooperates with the first claw part. The first slot wall and the second slot wall in the slot structure clamp the first claw part, which can improve the clamping strength between the first limiting part and the second limiting part, thereby improving the limiting and fixing effect of the fire pipe in the first direction and the second direction, and improving the installation stability of the fire pipe in the battery.

[0011] In some possible implementations, a first protrusion is provided at the end of the first slot wall and / or the second slot wall away from the battery cell, and a second protrusion is provided at the end of the first claw portion near the battery cell. The first protrusion and the second protrusion cooperate with each other to limit the fire pipe in a first direction.

[0012] With the technical solution of this embodiment, when the first slot wall and / or the second slot wall are engaged with the first claw portion, the second protrusion on the first claw portion is positioned relative to the first protrusion on the first slot wall and / or the first claw portion towards the battery cell. The first protrusion can prevent the second protrusion and the first claw portion where it is located from moving away from the battery cell, thereby further improving the engagement strength between the second limiting portion and the first limiting portion in the first direction, so as to improve the limiting and fixing effect of the fire pipeline in the first direction.

[0013] In some possible implementations, the end of the first protrusion away from the battery cell is provided with a first inclined surface, and the end of the second protrusion near the battery cell is provided with a second inclined surface. The first inclined surface and the second inclined surface correspond to each other and are respectively inclined to the plane perpendicular to the first wall.

[0014] The technical solution of this embodiment, based on the first protrusion provided in the first claw portion and the second protrusion provided in the first and / or second slot walls to cooperate with the first protrusion, can respectively provide mutually cooperating inclined surfaces on the first and second protrusions. This ensures a better locking effect between the first claw portion and the first and second slot walls, while further improving the installation efficiency of the first claw portion between the first and second slot walls. Therefore, the technical solution of this embodiment, while ensuring the installation stability of the fire-fighting pipe in the battery, can improve the installation efficiency of the fire-fighting pipe in the battery.

[0015] In some possible implementations, the slot structure extends along a third direction, and the first claw portion is capable of sliding in the slot structure along the third direction, wherein the third direction is parallel to the first wall and parallel to the extension direction of the fire-fighting pipe.

[0016] In this embodiment, the second limiting portion of the slot structure extends along a third direction, thus giving the slot structure a certain length in that direction. The first claw portion in the fire-fighting pipeline can slide along the third direction within the slot structure. During the operation of the battery cell, it expands due to internal chemical reactions. When the battery cell expands in the third direction, it causes a change in the position of the fixing member located on its first wall, and even a change in the position of the second limiting portion on that fixing member. Because the first claw portion in the fire-fighting pipeline can slide along the third direction within the second limiting portion of the slot structure, even if the expansion of the battery cell causes a change in the position of the second limiting portion, the impact on the fire-fighting pipeline is small or nonexistent. Therefore, even if the battery cell expands, the installation stability of the fire-fighting pipeline within the battery remains high.

[0017] In some possible implementations, the first limiting part is a double-claw structure, which includes: a connecting part, a first claw part and a second claw part arranged in a second direction, the connecting part being formed by the pipe wall of the fire-fighting pipe extending in the second direction, the first claw part and the second claw part being connected to the connecting part and extending toward the battery cell; the first claw part and the second claw part are used to clamp the second limiting part to limit the fire-fighting pipe in the first direction and the second direction.

[0018] The technical solution of this embodiment involves providing a first limiting part with a double-claw structure on the fire-fighting pipeline. This double-claw structure is used to clamp a second limiting part on the fixing member, thereby enabling the installation of the fire-fighting pipeline in the battery. Specifically, when the double-claw structure clamps the second limiting part, it can achieve good limiting and fixing effects on the second limiting part in two opposite sub-directions of the second direction, resulting in high stability of the fire-fighting pipeline in the second direction. Furthermore, when the double-claw structure clamps the second limiting part, there can be an interaction force between the double-claw structure and the second limiting part in the first direction, ensuring that the fire-fighting pipeline also has a certain degree of stability in the first direction.

[0019] In some possible implementations, the second limiting part is a snap-fit ​​structure, which includes a first snap-fit ​​part and a second snap-fit ​​part arranged along a first direction. The first snap-fit ​​part is formed by a fixing member extending in a direction away from the battery cell. The second snap-fit ​​part is disposed at the end of the first snap-fit ​​part away from the battery cell. In a second direction, the size of the second snap-fit ​​part is not less than the size of the first snap-fit ​​part. The first claw part and / or the second claw part are engaged with the second snap-fit ​​part.

[0020] The technical solution of this embodiment designs the second limiting part as a snap-fit ​​structure including a first snap-fit ​​part and a second snap-fit ​​part. The second snap-fit ​​part is arranged facing the fire pipe, and the size of the second snap-fit ​​part in the second direction is not less than the size of the first snap-fit ​​part in the second direction. Therefore, by using the larger size of the second snap-fit ​​part, it is easy to realize the snap-fit ​​of the second snap-fit ​​part in the double claw structure of the fire pipe, and improve the snap-fit ​​strength of the second snap-fit ​​part in the double claw structure.

[0021] In some possible implementations, a third protrusion is provided at one end of the first and / or second claw portions near the battery cell; the second latch portion includes a fourth protrusion protruding relative to the first latch portion in a second direction, the fourth protrusion cooperating with the third protrusion to limit the fire pipe in a first direction.

[0022] With the technical solution of this embodiment, when the first claw portion and / or the second claw portion engage with the second latch portion, the fourth protrusion on the second latch portion is positioned away from the battery cell relative to the third protrusion on the first claw portion and / or the second claw portion. This fourth protrusion can prevent the third protrusion and the first claw portion and / or the second claw portion where it is located from moving away from the battery cell, thereby further improving the engagement strength between the second limiting portion and the first limiting portion in the first direction, so as to improve the limiting and fixing effect of the fire pipeline in the first direction.

[0023] In some possible implementations, the third protrusion has a third inclined surface at the end near the battery cell, and the fourth protrusion has a fourth inclined surface at the end away from the battery cell. The third and fourth inclined surfaces correspond to each other and are respectively inclined to the plane perpendicular to the first wall.

[0024] The technical solution of this embodiment provides a third protrusion on the first and / or second claw portions, and a fourth protrusion on the second latch portion that cooperates with the third protrusion. The third and fourth protrusions can be provided with mutually cooperating inclined surfaces. While ensuring that the second latch portion can have a better latching effect with the first and second claw portions, it can also further improve the installation efficiency of the second latch portion between the first and second claw portions. Thus, while ensuring the installation stability of the fire-fighting pipeline in the battery, it can also improve the installation efficiency of the fire-fighting pipeline in the battery.

[0025] In some possible implementations, the double claw structure extends along a third direction, and the second limiting part is capable of sliding in the double claw structure along the third direction, wherein the third direction is parallel to the first wall and parallel to the extension direction of the fire-fighting pipe.

[0026] In this embodiment, the first limiting portion of the double-claw structure extends along a third direction, thus giving the double-claw structure a certain length in that direction. The second limiting portion of the fixing member can slide along the third direction within the double-claw structure. During the operation of the battery cell, it expands due to internal chemical reactions. When the battery cell expands in the third direction, it causes a change in the position of the fixing member located on its first wall, and even a change in the position of the second limiting portion on that fixing member. Since the second limiting portion can slide along the third direction within the double-claw structure, even if the expansion of the battery cell causes a change in the position of the second limiting portion, the impact on the fire-fighting pipeline is small or nonexistent. Therefore, even if the battery cell expands, the installation stability of the fire-fighting pipeline within the battery remains high.

[0027] In some possible implementations, the first limiting portion extends along a third direction, and in the third direction, the extension length of the first limiting portion is the same as the extension length of the fire-fighting pipe, wherein the third direction is parallel to the first wall and parallel to the extension direction of the fire-fighting pipe.

[0028] The technical solution of this embodiment facilitates the installation of fire-fighting pipes at multiple different locations via their first limiting portion and fasteners. As an example, the dimensions of battery cells in a third-dimensional direction may vary among different types of battery cells; therefore, the positions of the fasteners on different types of battery cells may also change accordingly. As another example, in multiple battery cells, fasteners may be installed only on the first wall of some battery cells, and the positions of the fasteners on multiple battery cells may be adjusted and changed under different application requirements. In both of these examples, the technical solution of this application embodiment still allows for installation using the first limiting portion on the fire-fighting pipe in conjunction with the fasteners. In other words, the fixed installation of the fire-fighting pipe is not affected by changes in the positions of the fasteners on multiple battery cells. This technical solution not only improves the installation efficiency of fire-fighting pipes in batteries but also makes fire-fighting pipes applicable to more application scenarios, facilitating the promotion and use of fire-fighting pipes in various types of batteries.

[0029] In some possible implementations, the fire-fighting pipe includes at least one pair of first limiting parts, and in a second direction, each pair of first limiting parts is located on both sides of the fire-fighting pipe; the fastener includes at least one pair of second limiting parts, and each pair of second limiting parts is provided corresponding to each pair of first limiting parts.

[0030] Through the technical solution of this embodiment, at least one pair of first limiting parts are provided on both sides of the fire-fighting pipeline in the second direction. The at least one pair of first limiting parts cooperate with each other with at least one pair of corresponding second limiting parts to achieve a more reliable and stable limiting and fixing of the fire-fighting pipeline in the second direction, thereby improving the installation stability of the fire-fighting pipeline in the battery.

[0031] In some possible implementations, the fire-fighting conduit includes a first pipe wall and a second pipe wall disposed opposite to each other along a first direction, wherein the first pipe wall is further away from the battery cell than the second pipe wall, wherein the thickness of the first pipe wall is greater than the thickness of the second pipe wall, and / or the first pipe wall is provided with a reinforcing member.

[0032] Through the technical solution of this embodiment, in the fire-fighting pipeline, the thickness of the first pipe wall away from the battery cell is greater than the thickness of the second pipe wall close to the battery cell, and / or, the first pipe wall is provided with a reinforcing member. Therefore, the first pipe wall away from the battery cell can have higher strength and can withstand the impact of external forces on the fire-fighting pipeline to a greater extent, thereby improving the reliability of the fire-fighting pipeline in the battery.

[0033] In some possible implementations, in the second direction, the size of the first pipe wall is larger than the size of the second pipe wall.

[0034] Through the technical solution of this embodiment, in fire-fighting pipelines, by designing the dimensions of the first and second pipe walls in the second direction, the strength of the first pipe wall can be made greater than that of the second pipe wall. This means the first pipe wall can have higher strength and can withstand the impact of external forces on the fire-fighting pipeline to a greater extent, improving the reliability of the fire-fighting pipeline in the battery. Furthermore, when the discharge from inside the battery cell impacts the first pipe wall through the pressure relief mechanism, the second pipe wall may adhere entirely to the first pipe wall. When the dimensions of the first and second pipe walls are the same, this adhered second and first pipe walls will block the flow channel, thereby hindering the flow of fire-fighting media in the fire-fighting pipeline into the corresponding pressure relief mechanism and the battery cell, affecting the fire-fighting effect of the pipeline. However, with the technical solution of this embodiment, the dimension of the first pipe wall in the second direction is larger than that of the second pipe wall in the second direction. Even if the second pipe wall adheres to the first pipe wall, it will not completely block the flow channel, allowing the fire-fighting media to flow into the corresponding pressure relief mechanism and the battery cell, thus achieving a good fire-fighting effect.

[0035] In a second aspect, an electrical device is provided, comprising: a battery as described in the first aspect or any possible embodiment of the first aspect, the battery being used to provide electrical energy to the electrical device.

[0036] Thirdly, a method for manufacturing a battery is provided, comprising: providing a battery cell, the battery cell including a first wall, the first wall being provided with a pressure relief mechanism, the pressure relief mechanism being actuated to release internal pressure when the internal pressure or temperature of the battery cell reaches a threshold; providing a fire-fighting pipe, the fire-fighting pipe being used to contain fire-fighting medium and to discharge the fire-fighting medium when the pressure relief mechanism is actuated; providing a fixing member, the fixing member being disposed between the first wall and the fire-fighting pipe; and fixing the fire-fighting pipe to the fixing member; wherein the fire-fighting pipe includes a first limiting part, the fixing member includes a second limiting part, the first limiting part and the second limiting part cooperating with each other to limit the fire-fighting pipe in a first direction and a second direction, the first direction being perpendicular to the first wall, and the second direction being parallel to the first wall and perpendicular to the extension direction of the fire-fighting pipe.

[0037] Fourthly, an apparatus for manufacturing a battery is provided, comprising: a providing module for: providing a battery cell, the battery cell including a first wall, the first wall being provided with a pressure relief mechanism, the pressure relief mechanism being actuated to release internal pressure when the internal pressure or temperature of the battery cell reaches a threshold; providing a fire-fighting pipe, the fire-fighting pipe for containing fire-fighting medium and discharging the fire-fighting medium when the pressure relief mechanism is actuated; providing a fixing member, the fixing member being disposed between the first wall and the fire-fighting pipe; and an installation module for fixing the fire-fighting pipe to the fixing member; wherein the fire-fighting pipe includes a first limiting part, the fixing member includes a second limiting part, the first limiting part and the second limiting part cooperating with each other to limit the fire-fighting pipe in a first direction and a second direction, the first direction being perpendicular to the first wall, and the second direction being parallel to the first wall and perpendicular to the extension direction of the fire-fighting pipe.

[0038] The technical solution of this application embodiment, by installing a fire-fighting pipe in the battery, allows for the discharge of fire-fighting medium when the pressure relief mechanism of the battery cell is activated. This cools the discharge from the battery cell and even the internal structure of the battery cell, improving the battery's safety performance. Furthermore, the fire-fighting pipe is equipped with a first limiting part, and a fixing component is also installed in the battery. This fixing component has a second limiting part. The first and second limiting parts cooperate to limit the fire-fighting pipe in multiple directions, ensuring its stable installation within the battery and providing reliable fire-fighting and temperature regulation effects, thereby enhancing the battery's safety performance. Attached Figure Description

[0039] 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.

[0040] Figure 1 This is a schematic diagram of the structure of a vehicle disclosed in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of a battery disclosed in one embodiment of this application; Figure 3 This is a schematic diagram of the structure of a battery cell disclosed in an embodiment of this application; Figure 4 This is a cross-sectional explosion diagram of a battery disclosed in one embodiment of this application; Figure 5 This is another cross-sectional exploded view of the battery disclosed in one embodiment of this application; Figure 6 yes Figure 5 A magnified view of part A in the middle; Figure 7This is a partially enlarged explosion diagram of a battery disclosed in an embodiment of this application; Figure 8 This is a partially enlarged schematic diagram of a battery disclosed in an embodiment of this application; Figure 9 This is a three-dimensional exploded schematic diagram of a battery disclosed in an embodiment of this application; Figure 10 This is another cross-sectional exploded view of the battery disclosed in one embodiment of this application; Figure 11 yes Figure 10 A magnified view of part B in the middle section; Figure 12 This is another partially enlarged exploded schematic diagram of the battery disclosed in one embodiment of this application; Figure 13 This is another partially enlarged schematic diagram of the battery disclosed in one embodiment of this application; Figure 14 This is another three-dimensional exploded view of the battery disclosed in one embodiment of this application; Figure 15 This is another three-dimensional exploded view of the battery disclosed in one embodiment of this application; Figure 16 This is a schematic diagram of a fire-fighting pipeline disclosed in one embodiment of this application; Figure 17 This is another structural schematic diagram of a fire-fighting pipeline disclosed in one embodiment of this application; Figure 18 This is another structural schematic diagram of a fire-fighting pipeline disclosed in one embodiment of this application; Figure 19 This is a schematic flowchart of a method for preparing a battery disclosed in an embodiment of this application; Figure 20 This is a schematic block diagram of an apparatus for preparing a battery disclosed in an embodiment of this application.

[0041] The accompanying drawings are not drawn to scale. Detailed Implementation

[0042] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0043] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0044] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In this application, 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 three possibilities: A exists, A and B exist simultaneously, and B exists. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0047] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0048] In this application, a battery refers to a physical module comprising one or more battery cells to provide electrical energy. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a casing for encapsulating one or more battery cells. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0049] Optionally, 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 application embodiment is not limited in this regard. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and this application embodiment is not limited in this regard either. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, cuboid / square battery cells, and pouch battery cells, and this application embodiment is not limited in this regard either.

[0050] A battery cell includes an electrode assembly and an 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 electrodes. 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 current collector protrudes beyond the coated 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. 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 uncoated current collector protrudes beyond the coated current collector, serving as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be carried without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together. The diaphragm can be made of polypropylene (PP) or polyethylene (PE), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0051] The development of battery technology must take into account multiple design factors, such as energy density, cycle life, discharge capacity, charge / discharge rate and other performance parameters. In addition, battery safety also needs to be considered.

[0052] For batteries, the main safety hazards come from the charging and discharging processes. To improve battery safety, pressure relief mechanisms are generally incorporated into individual battery cells. A pressure relief mechanism is a component or part that activates when the internal pressure or temperature of a battery cell reaches a predetermined threshold to release that pressure or temperature. This predetermined threshold can be adjusted according to different design requirements. The predetermined threshold may depend on one or more of the materials used in the positive electrode, negative electrode, electrolyte, and separator within the battery cell. The pressure relief mechanism can employ pressure-sensitive or temperature-sensitive components or parts; that is, when the internal pressure or temperature of the battery cell reaches the predetermined threshold, the pressure relief mechanism is activated, thereby creating a channel for the release of internal pressure or temperature.

[0053] The term "actuation" as used in this application refers to the activation of the pressure relief mechanism, thereby releasing the internal pressure and temperature of the battery cell. The activation of the pressure relief mechanism may include, but is not limited to, at least a portion of the mechanism rupturing, tearing, or melting. Upon activation, the high-temperature, high-pressure substances inside the battery cell are discharged as waste from the mechanism. This method allows for pressure relief of the battery cell under controlled pressure or temperature, thereby preventing potentially more serious accidents.

[0054] The emissions from battery cells mentioned in this application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of the separator, high-temperature and high-pressure gases generated by the reaction, flames, etc.

[0055] The pressure relief mechanism on a battery cell has a significant impact on battery safety. For example, when a battery cell experiences a short circuit or overcharging, it may lead to thermal runaway, causing a sudden increase in pressure or temperature. In such cases, the pressure relief mechanism can be activated to release internal pressure and temperature, preventing the battery cell from exploding or catching fire.

[0056] In addition to installing pressure relief mechanisms on individual battery cells to ensure battery safety, the housing containing the battery cells may also include a fire-fighting pipe. This fire-fighting pipe can contain a fire-fighting medium, which may be a fire-fighting liquid, a fire-fighting gas, or a fire-fighting solid. Optionally, in some embodiments, the fire-fighting pipe may be correspondingly installed with the pressure relief mechanism in the battery cell. When the pressure relief mechanism is activated, the discharge from the battery cell will damage the wall of the fire-fighting pipe, causing the fire-fighting medium to flow out of the pipe. The fire-fighting medium can cool down the high-temperature discharge from the battery cell, reducing the hazard of the discharge and thus improving the safety performance of the battery cell and the battery as a whole.

[0057] In some related technologies, brackets are used to install fire-fighting pipes on the wall where the pressure relief mechanism is located within a battery cell. For example, a bracket is installed on the wall containing the pressure relief mechanism in the battery cell, and the fire-fighting pipe is mounted on the bracket, corresponding to the pressure relief mechanism. The bracket only has simple limiting structures, such as grooves, which provide limited fixation for the fire-fighting pipe. Therefore, in this technical solution, the installation stability of the fire-fighting pipe within the battery is poor. When the electrical device containing the battery (e.g., an electric vehicle) is in motion, it will affect the fire-fighting pipe within the battery. If the installation stability of the fire-fighting pipe is poor, it may vibrate or even detach from the battery cell, thus affecting the normal use of the fire-fighting pipe and posing a safety hazard to the battery.

[0058] In view of this, this application provides a battery in which a first limiting part is provided on the fire-fighting pipe, and the battery also includes a fixing member. The second limiting part of the fixing member and the first limiting part on the fire-fighting pipe can cooperate with each other to limit and fix the fire-fighting pipe upward in multiple ways, thereby improving the installation stability of the fire-fighting pipe in the battery and thus improving the safety performance of the battery.

[0059] The technical solutions described in the embodiments of this application are applicable to various battery-powered devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, electric vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0060] It should be understood that the technical solutions described in the embodiments of this application are not limited to the devices described above, but can also be applied to all devices that use batteries. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0061] For example, such as Figure 1 The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 11, a controller 12, and a battery 10 can be installed inside vehicle 1. The controller 12 controls the battery 10 to supply power to the motor 11. For example, the battery 10 can be installed at the bottom, front, or rear of vehicle 1. The battery 10 can be used to power vehicle 1; for example, it can serve as the operating power source for the vehicle 1's electrical system, such as meeting the power requirements for starting, navigation, and operation. In another embodiment of this application, the battery 10 can not only serve as the operating power source for vehicle 1 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving power to vehicle 1.

[0062] To meet diverse power demands, a battery can comprise multiple individual cells, which can be connected in series, parallel, or a combination of both. A battery can also be called a battery pack. Optionally, multiple individual cells can first be connected in series, parallel, or a combination of both to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination of both to form a battery. In other words, multiple individual cells can be directly assembled into a battery, or they can first be assembled into battery modules, and then the battery modules can be assembled into a battery.

[0063] For example, such as Figure 2 The diagram shown is a structural schematic of a battery 10 according to an embodiment of this application. The battery 10 may include multiple battery cells 20. The battery 10 may also include a housing 100 (or cover), the housing 100 having a hollow internal structure, and the multiple battery cells 20 are housed within the housing 100. Figure 2 As shown, the housing 100 may include two parts, referred to here as the first part 111 and the second part 112, which are fastened together. The shapes of the first part 111 and the second part 112 can be determined according to the shape of the combination of multiple battery cells 20. Both the first part 111 and the second part 112 may have an opening. For example, both the first part 111 and the second part 112 may be hollow cuboids with only one side as an opening. The openings of the first part 111 and the second part 112 are arranged opposite to each other, and the first part 111 and the second part 112 are fastened together to form a housing 100 with a closed cavity. Multiple battery cells 20 are connected in parallel, series, or mixed and placed inside the housing 100 formed by the fastening of the first part 111 and the second part 112.

[0064] Optionally, the battery 10 may also include other structures, which will not be described in detail here. For example, the battery 10 may also include a busbar component for realizing the electrical connection between multiple battery cells 20, such as parallel, series, or mixed connection. Specifically, the busbar component can realize the electrical connection between battery cells 20 by connecting the electrode terminals of the battery cells 20. Further, the busbar component can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 can be further led out through the housing by a conductive mechanism. Optionally, the conductive mechanism may also be part of the busbar component.

[0065] The number of battery cells 20 can be set to any value depending on different power requirements. Multiple battery cells 20 can be connected in series, parallel, or mixed to achieve a larger capacity or power. Since each battery 10 may contain a large number of battery cells 20, for ease of installation, the battery cells 20 can be grouped, with each group of battery cells 20 forming a battery module. The number of battery cells 20 included in a battery module is unlimited and can be set according to requirements.

[0066] Figure 3 A schematic diagram of the structure of a battery cell 20 according to an embodiment of this application is shown.

[0067] like Figure 3 As shown, the battery cell 20 includes one or more electrode assemblies 22, a housing 211, and a cover plate 212. The walls of the housing 211 and the cover plate 212 are both referred to as the walls of the battery cell 20. The shape of the housing 211 depends on the combined shape of the one or more electrode assemblies 22. For example, the housing 211 can be a hollow cuboid, cube, or cylinder, and one face of the housing 211 has an opening so that one or more electrode assemblies 22 can be placed inside the housing 211. For example, when the housing 211 is a hollow cuboid or cube, one plane of the housing 211 is an open face, meaning that this plane does not have a wall, allowing communication between the inside and outside of the housing 211. When the housing 211 can be a hollow cylinder, the end face of the housing 211 is an open face, meaning that this end face does not have a wall, allowing communication between the inside and outside of the housing 211. The cover plate 212 covers the opening and is connected to the housing 211 to form a closed cavity for placing the electrode assemblies 22. The casing 211 is filled with an electrolyte, such as an electrolyte solution.

[0068] The battery cell 20 may also include two electrode terminals 214, which can be disposed on a cover plate 212. The cover plate 212 is typically flat, and the two electrode terminals 214 are fixed to the flat surface of the cover plate 212. The two electrode terminals 214 are a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. Each electrode terminal 214 is provided with a corresponding connecting member 23, or a current collector 23, which is located between the cover plate 212 and the electrode assembly 22, and is used to electrically connect the electrode assembly 22 and the electrode terminal 214.

[0069] like Figure 3 As shown, each electrode assembly 22 has a first tab 221a and a second tab 222a. The first tab 221a and the second tab 222a have opposite polarities. For example, when the first tab 221a is a positive tab, the second tab 222a is a negative tab. The first tab 221a of one or more electrode assemblies 22 is connected to an electrode terminal via a connecting member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal via another connecting member 23. For example, the positive electrode terminal 214a is connected to the positive tab via a connecting member 23, and the negative electrode terminal 214b is connected to the negative tab via another connecting member 23.

[0070] In this battery cell 20, depending on actual usage requirements, the electrode assembly 22 can be configured as a single unit or multiple units, such as... Figure 3 As shown, the battery cell 20 contains four independent electrode assemblies 22.

[0071] As an example, a pressure relief mechanism 213 may also be provided on one wall of the battery cell 20. The pressure relief mechanism 213 is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold.

[0072] Optionally, in another embodiment of this application, the pressure relief mechanism 213 and the electrode terminal 214 are disposed on the same wall of the battery cell 20. For example, as Figure 3 As shown, both the electrode terminal 214 and the pressure relief mechanism 213 can be located on the top wall of the battery cell 20, i.e., the cover plate 212.

[0073] By placing the pressure relief mechanism 213 and the electrode terminal 214 on the same wall of the battery cell 20, such as on the cover plate 212 of the battery cell 20, it is convenient to process and install the pressure relief mechanism 213 and the electrode terminal 214, which is beneficial to improving the production efficiency of the battery 10.

[0074] Optionally, in one embodiment of this application, the pressure relief mechanism 213 and the electrode terminal 214 are disposed on different walls of the battery cell 20. For example, the electrode terminal 214 of the battery cell 20 may be disposed on the top wall of the battery cell 20, i.e., the cover plate 212. The pressure relief mechanism 213 is disposed on another wall of the battery cell 20, different from the top wall, for example, the pressure relief mechanism 213 is disposed on the bottom wall opposite to the top wall.

[0075] The aforementioned pressure relief mechanism 213 can be part of the wall it is located on, or it can be a separate structure from the wall it is located on, fixed to the wall by means such as welding. For example, in Figure 3 In the illustrated embodiment, when the pressure relief mechanism 213 is part of the bottom wall, it can be formed by creating a groove on the bottom wall. The thickness of the bottom wall corresponding to the groove is less than the thickness of the pressure relief mechanism 213 in other areas except for the groove. The groove is the weakest point of the pressure relief mechanism 213. When too much gas is generated by the battery cell 20, causing the internal pressure of the casing 211 to rise and reach a threshold, or when the internal reaction of the battery cell 20 generates heat, causing the internal temperature of the battery cell 20 to rise and reach a threshold, the pressure relief mechanism 213 can rupture at the groove, resulting in communication between the inside and outside of the casing 211. The gas pressure and temperature are released outward through the rupture of the pressure relief mechanism 213, thereby preventing the battery cell 20 from exploding.

[0076] Furthermore, the pressure relief mechanism 213 can be any of the possible pressure relief mechanisms, and this application embodiment is not limited to any particular one. For example, the pressure relief mechanism 213 can be a temperature-sensitive pressure relief mechanism, which is configured to melt when the internal temperature of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold; and / or, the pressure relief mechanism 213 can be a pressure-sensitive pressure relief mechanism, which is configured to rupture when the internal gas pressure of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold.

[0077] Figure 4 A cross-sectional explosion diagram of a battery 10 provided in an embodiment of this application is shown.

[0078] like Figure 4 As shown, the battery 10 includes: a battery cell 20, including a first wall 201, on which a pressure relief mechanism 213 is provided, the pressure relief mechanism 213 being actuated to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold; a fire-fighting pipe 30, for containing fire-fighting medium, the fire-fighting pipe 30 being used to discharge fire-fighting medium when the pressure relief mechanism 213 is actuated; and a fixing member 40, disposed between the first wall 201 and the fire-fighting pipe 30, the fixing member 40 being used to fix the fire-fighting pipe 30; wherein, the fire-fighting pipe 30 includes a first limiting part 310, and the fixing member 40 includes a second limiting part 410, the first limiting part 310 and the second limiting part 410 cooperating with each other to limit the fire-fighting pipe 30 in a first direction x and a second direction y, the first direction x being perpendicular to the first wall 201, and the second direction y being parallel to the first wall 201 and perpendicular to the extension direction of the fire-fighting pipe 30.

[0079] Specifically, in the embodiments of this application, the first wall 201 in the battery cell 20 can be Figure 3 In the illustrated embodiment, the cover plate 212 can also be any wall in the housing 211. Optionally, the first wall 201 is not the wall with the largest area among the battery cells 20. The wall with the largest area among the battery cells 20 can be used to attach to other battery cells 20 or the housing 100 to improve the installation stability of the battery cells 20 in the housing.

[0080] A pressure relief mechanism 213 is provided in the first wall 201. Referring to the above description, the pressure relief mechanism 213 can be part of the first wall 201 or it can be a separate structure from the first wall 201. The pressure relief mechanism 213 can be a temperature-sensitive pressure relief mechanism, a pressure-sensitive pressure relief mechanism, or other types of pressure relief mechanisms. For relevant technical solutions regarding the pressure relief mechanism 213, please refer to the relevant descriptions in the above embodiments; they will not be repeated here.

[0081] As an illustration, in this embodiment, both the pressure relief mechanism 213 and the electrode terminal 214 can be disposed on the first wall 201, which facilitates the processing and installation of the pressure relief mechanism 213 and the electrode terminal 214, and is beneficial to improving the production efficiency of the battery 10. Of course, in other alternative embodiments, the pressure relief mechanism 213 and the electrode terminal 214 can also be located on different walls in the battery cell 20.

[0082] Please continue reading Figure 4 In this embodiment, the fire-fighting pipe 30 is correspondingly arranged with the first wall 201. Optionally, the fire-fighting pipe 30 is correspondingly arranged with the pressure relief mechanism 213 on the first wall 201. The fire-fighting pipe 30 contains fire-fighting medium. When the pressure relief mechanism 213 is actuated and releases high-temperature emissions from inside the battery cell 20, the fire-fighting pipe 30 can discharge the fire-fighting medium to cool down the high-temperature emissions, preventing the high-temperature emissions from affecting the battery 10 and causing safety hazards. Furthermore, when the fire-fighting pipe 30 and the pressure relief mechanism 213 are correspondingly arranged, the fire-fighting medium discharged through the fire-fighting pipe 30 can flow into the interior of the battery cell 20 through the actuated pressure relief mechanism 213 to cool down the interior of the battery cell 20, preventing the high temperature of the battery cell 20 from being transferred to other battery cells 20 and thus affecting them.

[0083] Optionally, the fire-fighting medium in the fire-fighting pipeline 30 can be a cooling medium with a lower temperature. Besides providing better cooling when the pressure relief mechanism 213 is activated, it can also cool the battery cells 20 when the pressure relief mechanism 213 is not activated, preventing the battery cells 20 from overheating and causing safety problems. Optionally, the fire-fighting medium can be a fire-fighting gas, a fire-fighting liquid, or a fire-fighting solid. In some embodiments, the fire-fighting medium can be circulated to achieve a better cooling effect. By way of example and not limitation, in the embodiments of this application, the fire-fighting medium can be water, a mixture of water and ethylene glycol, or air, etc.

[0084] As an example rather than a limitation, such as Figure 4 As shown, the main body of the fire-fighting pipe 30 can be a pipe with an annular cross-section. In addition to the main body, the fire-fighting pipe 30 may further include a first limiting part 310, which is connected to the main body of the fire-fighting pipe 30. Optionally, the first limiting part 310 can be integrally formed with the main body of the fire-fighting pipe 30, or it can be a separate structure from the main body of the fire-fighting pipe 30. For example, the first limiting part 310 can be fixed to the main body of the fire-fighting pipe 30 by mechanical connection methods such as welding. The first limiting part 310 is used to cooperate with the fixing member 40 between the fire-fighting pipe 30 and the first wall 201 of the battery cell 20 to fix the fire-fighting pipe 30 on the first wall 201 of the battery cell 20.

[0085] Specifically, see [link to relevant documentation] Figure 4 The fastener 40 includes a second limiting part 410. The first limiting part 310 and the second limiting part 410 in the fire pipe 30 cooperate with each other to limit the fire pipe 30 in the first direction x and the second direction y. The first direction x is perpendicular to the first wall 201, and the second direction y is parallel to the first wall 201 and perpendicular to the extension direction of the fire pipe 30.

[0086] Optionally, in some embodiments, the fastener 40 may only include the second limiting part 410, which can be fixedly disposed on the first wall 201 of the battery cell 20 by mechanical connection such as welding.

[0087] Alternatively, in other embodiments, the fastener 40 may include other structural components in addition to the second limiting portion 410, to facilitate the installation of the fastener 40 and its second limiting portion 410 on the first wall 201. As an example, such as... Figure 4 As shown, in addition to the second limiting part 410, the fixing member 40 may include a mounting part. The second limiting part 410 is disposed on the mounting part. By mounting the mounting part on the first wall 201, the second limiting part 410 can be stably disposed on the first wall 201.

[0088] The mutual connection between the first limiting part 310 and the second limiting part 410 is described as an example, not a limitation. Figure 4 In the illustrated embodiment, in the second direction y, the first limiting part 310 is respectively disposed on both sides of the fire-fighting pipe 30; in the first direction x, the second limiting part 410 protrudes towards the fire-fighting pipe 30 and is disposed corresponding to the first limiting part 310. When the first limiting part 310 and the second limiting part 410 cooperate with each other, the first limiting part 310 and the second limiting part 410 can abut against each other in the first direction x and the second direction y, so as to limit the fire-fighting pipe 30 in the first direction x and the second direction y.

[0089] Optionally, the first limiting part 310 and the second limiting part 410 can be configured as follows: Figure 4 Besides the mechanical structures shown, which cooperate with each other, other mechanical structures such as snap-fit ​​grooves, shaft hole insertion, and concave-convex fits can also be used to limit the fire-fighting pipe 30 in the first direction x and the second direction y. This application does not limit the specific structure of the first limiting part 310 and the second limiting part 410 or the specific manner of their cooperation; the aim is simply to limit the fire-fighting pipe 30 in the first direction x and the second direction y.

[0090] By incorporating the technical solution of this application embodiment, a fire-fighting pipe 30 is installed in the battery 10. When the pressure relief mechanism 213 of the battery cell 20 is activated, fire-fighting medium can be discharged, cooling the emissions from the battery cell 20 and even the interior of the battery cell 20, thereby improving the safety performance of the battery 10. Furthermore, a first limiting part 310 is provided on the fire-fighting pipe 30, and a fixing member 40 is also provided in the battery 10. The fixing member 40 has a second limiting part 410. The first limiting part 310 and the second limiting part 410 cooperate to limit the fire-fighting pipe 30 in multiple directions, allowing the fire-fighting pipe 30 to be stably installed in the battery 10 and providing a more reliable fire-fighting and temperature regulation effect, thus enhancing the safety performance of the battery 10.

[0091] Figure 5 This paper shows another cross-sectional exploded view of the battery 10 provided in one embodiment of the present application. Figure 6 It shows Figure 5 A magnified view of part A in the diagram.

[0092] Combination Figure 5 and Figure 6 As shown in the embodiment of this application, the first limiting part 310 on the fire pipe 30 is a single claw structure. The single claw structure includes a connecting part 311 and a first claw part 312. The connecting part 311 is formed by the pipe wall of the fire pipe 30 extending along the second direction y. The first claw part 312 is connected to the connecting part 311 and extends toward the battery cell 20. The first claw part 312 is engaged with the second limiting part 410.

[0093] Through the technical solution of this application embodiment, the first limiting part 310 on the fire pipe 30 is designed as a single claw structure and is engaged with the second limiting part 410 on the fixing member 40. While ensuring the connection stability between the first limiting part 310 and the second limiting part 410, the single claw structure can be installed on the fire pipe 30 in a relatively convenient way, thereby improving the production efficiency of the fire pipe 30.

[0094] Optionally, such as Figure 6 As shown, the fire-fighting pipe 30 is provided with a first limiting part 310 on both sides of the second direction y, that is, the fire-fighting pipe 30 is provided with a single claw structure on both sides of the second direction y. The single claw structure on both sides of the fire-fighting pipe 30 is engaged with the second limiting part 410, which can further improve the installation stability of the fire-fighting pipe 30 in the battery 10.

[0095] Optionally, in the first limiting portion 310 of the single claw structure, the connecting portion 311 can be connected to the end of the fire-fighting pipe 30 away from the battery cell 20. As an example, such as... Figure 6As shown, the cross-section of the fire-fighting pipe 30 can be racetrack-shaped. The pipe wall of the fire-fighting pipe 30 away from the battery cell 20 is a flat plate structure parallel to the second direction y. This part of the pipe wall can be referred to as the first pipe wall of the fire-fighting pipe, and the connecting part 311 can be the extension of the first pipe wall in the second direction y. Through this embodiment, the thickness space of the fire-fighting pipe 30 in the first direction x can be used to set a first claw part 312 that is interconnected with the connecting part 311 and extends toward the battery cell 20. Correspondingly, the second limiting part 410 that is interlocked with the first claw part 312 can also be set in the thickness space of the fire-fighting pipe 30 in the first direction x, thereby saving the installation space of the fire-fighting pipe 30 on the battery cell 20, which is conducive to reducing the overall volume of the battery 10 and thus increasing the energy density of the battery 10.

[0096] As an example rather than a limitation, such as Figure 6 As shown, the first claw portion 312 may include a first protrusion, and correspondingly, the second limiting portion 410 may include a second protrusion. The first protrusion and the second protrusion can cooperate with each other to achieve mutual engagement between the first claw portion 312 and the second limiting portion 410.

[0097] Alternatively, in other embodiments, the first claw portion 312 and the second limiting portion 410 may also be engaged with each other in other ways. Figure 7 A partially enlarged exploded schematic diagram of a battery 10 provided in another embodiment of this application is shown.

[0098] like Figure 7 As shown in the embodiment of this application, the second limiting part 410 is a slot structure. The slot structure includes a first slot wall 411 and a second slot wall 412 arranged along the second direction y. The first slot wall 411 and the second slot wall 412 are used to clamp the first claw part 312 to limit the fire pipe 30 in the first direction x and the second direction y.

[0099] Specifically, in this embodiment, the second limiting part 410 is a slot structure that cooperates with the first claw part 312. The first slot wall 411 and the second slot wall 412 in the slot structure clamp the first claw part 312, which can improve the clamping strength between the first limiting part 310 and the second limiting part 410, thereby improving the limiting and fixing effect of the fire pipe 30 in the first direction x and the second direction y, and improving the installation stability of the fire pipe 30 in the battery 10.

[0100] Optionally, in order to ensure that the first slot wall 411 and the second slot wall 412 provide a good clamping effect on the first claw portion 312, the distance between the first slot wall 411 and the second slot wall 412 in the second direction y is adapted to the size of the first claw portion 312 in the second direction y. For example, the distance between the first slot wall 411 and the second slot wall 412 in the second direction y is equal to or similar to the size of the first claw portion 312 in the second direction y. Alternatively, the sizes of the first slot wall 411, the second slot wall 412, and the first claw portion 312 in the first direction x can also be the same or similar.

[0101] Optionally, in some embodiments of this application, the first slot wall 411, the second slot wall 412, and the first claw portion 312 can all be plate-shaped structures. When the slot structure formed by the first slot wall 411 and the second slot wall 412 can stably clamp the first claw portion 312, the second limiting portion 410 of the slot structure can not only play a relatively reliable and stable limiting and fixing role on the first claw portion 312 directly in the second direction y, but also play a certain degree of limiting and fixing role on the first claw portion 312 in the first direction x through friction.

[0102] Alternatively, in some other embodiments of this application, in order to further improve the snapping strength between the second limiting part 410 and the first claw part 312 in the first direction x, so as to improve the limiting and fixing effect of the fire pipe 30 in the first direction x, in the second limiting part 410 of the slot structure, a first protrusion 4101 is provided at the end of the first slot wall 411 and / or the second slot wall 412 away from the battery cell 20, and a second protrusion 3121 is provided at the end of the first claw part 312 near the battery cell 20. The first protrusion 4101 and the second protrusion 3121 cooperate with each other to limit the fire pipe 30 in the first direction x.

[0103] As an example rather than a limitation, such as Figure 7As shown, a first protrusion 4101 is provided on the second slot wall 412. The first protrusion 4101 and the second protrusion 3121 on the first claw portion 312 protrude toward two opposite sub-directions in the second direction y, respectively. When the first claw portion 312 is installed between the first slot wall 411 and the second slot wall 412, the first protrusion 4101 and the second protrusion 3121 are arranged opposite to each other in the first direction x, so that the first protrusion 4101 and the second protrusion 3121 can cooperate and engage with each other. In addition, the first protrusion 4101 is disposed at the end of the second slot wall 412 away from the battery cell 20, and the second protrusion 3121 is disposed at the end of the first claw portion 312 close to the battery cell 20. When the second slot wall 412 and the first claw portion 312 are engaged with each other, the second protrusion 3121 is disposed relative to the first protrusion 4101 towards the battery cell 20. The first protrusion 4101 can prevent the second protrusion 3121 and the first claw portion 312 where it is located from moving away from the battery cell 20.

[0104] It is understandable that when the first slot wall 411 is provided with a first protrusion 4101, the first protrusion 4101 on the first slot wall 411 and the second protrusion 3121 on the first claw portion 312 can also protrude in opposite sub-directions of the second direction y, respectively. The first protrusion 4101 and the second protrusion 3121, except for their protrusion directions, are... Figure 7 Apart from the opposite direction of the protrusion shown, other related technical solutions can be found in the above descriptions, which will not be repeated here.

[0105] Additionally, it should be noted that in this embodiment, after the first claw portion 312 is installed between the first slot wall 411 and the second slot wall 412, the relative positions of the first protrusion 4101 and the second protrusion 3121 are designed so that the second protrusion 3121 faces the battery cell 20 relative to the first protrusion 4101. Therefore, the first protrusion 4101 can be located at other positions on the first slot wall 411 and / or the second slot wall 412, except at the end of the first slot wall 411 and / or the second slot wall 412 away from the battery cell 20. Similarly, the second protrusion 3121 can be located at other positions on the first claw portion 312, except at the end of the first claw portion 312 near the battery cell 20. This embodiment does not limit the specific positions of the first protrusion 4101 and the second protrusion 3121.

[0106] Optionally, in Figure 7 In the embodiment shown, the first protrusion 4101 and the second protrusion 3121 are both block protrusions. Of course, in other embodiments, the first protrusion 4101 and the second protrusion 3121 may also be protrusions of other shapes. The embodiments of this application do not specifically limit the shape of the first protrusion 4101 and the second protrusion 3121.

[0107] In another embodiment of this application, the end of the first protrusion 3121 on the first claw portion 312 away from the battery cell 20 may be provided with a first inclined surface 3122, and the end of the second protrusion 4101 on the first slot wall 411 and / or the second slot wall 412 near the battery cell 20 is provided with a second inclined surface 4102. The first inclined surface 3122 and the second inclined surface 4102 correspond to each other and are respectively inclined to the plane perpendicular to the first wall 201.

[0108] exist Figure 7 Based on the illustrated embodiment, Figure 8 This illustration shows a partially enlarged schematic diagram of a battery 10 provided in an embodiment of this application, wherein... Figure 8 Figure (a) is a magnified schematic diagram of a partial explosion. Figure 8 Figure (b) is a partially enlarged assembly diagram.

[0109] like Figure 8 As shown, the second protrusion 4101 on the second slot wall 412 has a second inclined surface 4102 at the end near the battery cell 20, and the first protrusion 3121 on the first claw portion 312 has a first inclined surface 3122 at the end away from the battery cell 20. During the installation of the first claw portion 312 onto the first slot wall 411 and the second slot wall 412, the first inclined surface 3122 and the second inclined surface 4102 are opposite to each other and can slide together. The first claw portion 312 slides against the second inclined surface 4102 of the second slot wall 412 through its first inclined surface 3122, thereby facilitating the installation of the first claw portion 312 between the first slot wall 411 and the second slot wall 412.

[0110] Optionally, the first inclined surface 4102 and the second inclined surface 3122 may be parallel to each other to optimize the sliding installation of the first claw portion 312 between the first slot wall 411 and the second slot wall 412.

[0111] Through the technical solution of the embodiments of this application, a first protrusion 3121 is provided on the first claw portion 312, and a second protrusion 4101 that cooperates with the first protrusion 3121 is provided on the first claw portion 312 and / or the second claw wall 412. The first protrusion 3121 and the second protrusion 4101 can be respectively provided with mutually cooperating inclined surfaces. While ensuring that the first claw portion 312 and the first claw wall 411 and the second claw wall 412 can have a better clamping effect, it can also further improve the installation efficiency of the first claw portion 312 between the first claw wall 411 and the second claw wall 412. Thus, while ensuring the installation stability of the fire pipe 30 in the battery 10, the installation efficiency of the fire pipe 30 in the battery 10 is improved.

[0112] exist Figure 8Based on the illustrated embodiment, Figure 9 A three-dimensional exploded view of a battery 10 provided in an embodiment of this application is shown.

[0113] like Figure 9 As shown in the embodiment of this application, the second limiting part 410 is a slot structure that extends along a third direction z. The first claw part 312 in the first limiting part 310 can slide along the third direction z in the slot structure. The third direction z is parallel to the first wall 201 of the battery cell 20 and parallel to the extension direction of the fire pipe 30.

[0114] Specifically, in the second limiting part 410 of the slot structure, the first slot wall 411 and the second slot wall 412 can extend along the third direction z and have a certain length in the third direction z, so that the first claw part 312 in the fire pipe 30 can slide between the first slot wall 411 and the second slot wall 412 along the third direction z.

[0115] During the operation of the battery cell 20, the internal chemical reaction causes the gas inside the battery cell 20 to expand, resulting in a corresponding expansion of the battery cell 20. When the battery cell 20 expands in the third direction z, it causes a change in the position of the fixing member 40 located on its first wall 201, and even a change in the position of the second limiting part 410 on the fixing member 40. Since the first claw part 312 in the fire hydrant 30 can slide in the second limiting part 410 of the slot structure along the third direction z, even if the expansion of the battery cell 20 causes a change in the position of the second limiting part 410, the impact on the fire hydrant 30 is small or non-existent. Therefore, even if the battery cell 20 expands, the installation stability of the fire hydrant 30 in the battery 10 remains high.

[0116] Optionally, such as Figure 9 As shown, the fixing member 40 on the battery cell 20 may include multiple second limiting portions 410. Specifically, in the second direction y, the fixing member 40 is provided with second limiting portions 410 at positions corresponding to both sides of the fire pipe 30. In addition, in the third direction z, the fixing member 40 may also be provided with multiple second limiting portions 410 at positions corresponding to the same side of the fire pipe 30 to further enhance the limiting and fixing effect on the fire pipe 30. Optionally, in the third direction z, two second limiting portions 410 may be respectively provided on both sides of the pressure relief mechanism 213 of the battery cell 20, and the fixing member 40 has an opening between the two second limiting portions 410 to allow the pressure relief mechanism 213 to release the pressure inside the battery cell 20.

[0117] Understandable Figure 9The number and position of the second limiting part 410 on the fastener 40 are shown for illustrative purposes only and not as a limitation in this embodiment. The fastener 40 has an opening corresponding to the pressure relief mechanism 213, and the fire-fighting pipeline 30 is provided corresponding to the pressure relief mechanism 213 and the opening. Therefore, in this embodiment, the second limiting part 410 can be provided in the fastener 40 except for the opening, and can cooperate with any position of the first limiting part 310 in the fire-fighting pipeline 30. This embodiment does not specifically limit the number and position of the second limiting part 410 on the fastener 40.

[0118] In addition, Figure 9 In the illustrated embodiment, the two ends of the fixing member 40 may each be provided with annular mounting portions. These annular mounting portions cooperate with the electrode terminals 214 in the battery cell 20 to achieve fixed mounting of the fixing member 40 on the battery cell 20. Of course, besides this… Figure 9 In addition to the embodiments shown, other mechanical fixing methods can also be used to fix the fastener 40 on the battery cell 20. This application does not specifically limit the installation method of the fastener 40 on the battery cell 20.

[0119] Please continue reading Figure 9 Optionally, in this embodiment, the wall with the largest area in the battery cell 20 is positioned in the third direction z. In this case, multiple battery cells 20 can be attached to each other along the third direction z, which can improve the stability between the multiple battery cells 20. At the same time, the fire-fighting pipe 30 extends along the third direction z, that is, the arrangement direction of the multiple battery cells 20, which can simultaneously play the role of fire fighting and temperature regulation for the multiple battery cells 20.

[0120] In addition, Figure 9 In the embodiment shown, in addition to the second limiting part 410 of the slot structure extending along the third direction z, the first limiting part 310 in the fire pipe 30 may also extend along the third direction z.

[0121] In some embodiments, the extension length of the first limiting portion 310 in the third direction z is the same as the extension length of the fire-fighting pipe 30. This embodiment facilitates the installation of the fire-fighting pipe 30 onto multiple fasteners 40 at different locations via its first limiting portion 310. As an example, the dimensions of different types of battery cells 20 in the third direction z may vary, therefore, the positions of the fasteners 40 on different types of battery cells 20 may also change accordingly. As another example, in multiple battery cells 20, fasteners 40 may be provided only on the first wall 210 of some battery cells 20, and the positions of the fasteners 40 on multiple battery cells 20 may be adjusted and changed under different application requirements. In both of these examples, the technical solution of this application embodiment still allows the first limiting portion 310 on the fire-fighting pipe 30 to cooperate with the fasteners 40 for installation. In other words, the fixed installation of the fire-fighting pipe 30 is not affected by changes in the positions of the fasteners 40 on multiple battery cells 20. The technical solution of this embodiment can not only improve the installation efficiency of the fire-fighting pipe 30 in the battery 10, but also make the fire-fighting pipe 30 applicable to more application scenarios, which is conducive to the promotion and use of the fire-fighting pipe 30 in various types of batteries 10.

[0122] In other embodiments, the extension length of the first limiting part 310 in the third direction z may be less than the extension length of the fire-fighting pipe 30. Specifically, in the third direction z, the extension length of the first limiting part 310 matches the extension length of the second limiting part 410. Through this embodiment, the fire-fighting pipe 30 can be installed in the battery 10 using the first limiting part 310 and the second limiting part 410, thus reducing the overall manufacturing cost of the fire-fighting pipe 30.

[0123] The above text combined Figures 5 to 9 This paper describes the technical solutions of the battery 10 provided in some embodiments of this application. In the technical solutions of the above-mentioned embodiments, the first limiting part 310 in the fire-fighting pipe 30 is a single claw structure. The following is in conjunction with... Figures 10 to 14 This application describes the technical solutions of the battery 10 provided in other embodiments. In the technical solutions of the following application embodiments, the first limiting part 310 in the fire pipe 30 is a double claw structure.

[0124] Figure 10 This paper shows another cross-sectional exploded view of the battery 10 provided in one embodiment of the present application. Figure 11 It shows Figure 10 A magnified view of part B in the diagram.

[0125] Combination Figure 10 and Figure 11As shown in this embodiment, the first limiting part 310 on the fire-fighting pipe 30 is a double-claw structure. The double-claw structure includes: a connecting part 311, a first claw part 312 and a second claw part 313 arranged along the second direction y. The connecting part 311 is formed by the pipe wall of the fire-fighting pipe 30 extending along the second direction y. The first claw part 312 and the second claw part 313 are connected to the connecting part 311 and extend toward the battery cell 20. The first claw part 312 and the second claw part 313 are used to clamp the second limiting part 410 to limit the fire-fighting pipe 30 in the first direction x and the second direction y.

[0126] Optionally, such as Figure 11 As shown, the fire-fighting pipe 30 is provided with a first limiting part 310 on both sides of the second direction y, that is, the fire-fighting pipe 30 is provided with a double claw structure on both sides of the second direction y. By using the double claw structure on both sides of the fire-fighting pipe 30 to clamp the second limiting part 410, the installation stability of the fire-fighting pipe 30 in the battery 10 can be further improved.

[0127] The technical solution of this application embodiment provides a first limiting part 310 with a double-claw structure on the fire-fighting pipe 30. This double-claw structure is used to clamp the second limiting part 410 on the fixing member 40 to realize the installation of the fire-fighting pipe 30 in the battery 10. Specifically, when the double-claw structure clamps the second limiting part 410, the double-claw structure can achieve good limiting and fixing effects on the second limiting part 410 in two opposite sub-directions in the second direction y, so that the fire-fighting pipe 30 has high stability in the second direction y. Furthermore, when the double-claw structure clamps the second limiting part 410, there can be an interaction force between the double-claw structure and the second limiting part 410 in the first direction x, so as to ensure that the fire-fighting pipe 30 also has a certain stability in the first direction x.

[0128] Optionally, in the first limiting portion 310 of the dual-claw structure, the connecting portion 311 can be connected to the end of the fire-fighting pipe 30 away from the battery cell 20. As an example, such as... Figure 11As shown, the cross-section of the fire-fighting pipe 30 can be racetrack-shaped. The pipe wall of the fire-fighting pipe 30 away from the battery cell 20 is a flat plate structure parallel to the second direction y. This part of the pipe wall can be referred to as the first pipe wall of the fire-fighting pipe, and the connecting part 311 can be the extension of the first pipe wall in the second direction y. Through this embodiment, the thickness space of the fire-fighting pipe 30 in the first direction x can be used to set a first claw part 312 and a second claw part 313 that are interconnected with the connecting part 311 and extend toward the battery cell 20. Correspondingly, the second limiting part 410 that clamps between the first claw part 312 and the second claw part 313 can also be set in the thickness space of the fire-fighting pipe 30 in the first direction x, thereby saving the installation space of the fire-fighting pipe 30 on the battery cell 20, which is conducive to reducing the overall volume of the battery 10 and thus increasing the energy density of the battery 10.

[0129] Optionally, in Figure 11 In the illustrated embodiment, the first claw portion 312 and the second claw portion 313 can be plate-shaped structures, and correspondingly, the second limiting portion 410 can also be plate-shaped structures. In the second direction y, the distance between the first claw portion 312 and the second claw portion 313 can be similar to the size of the second limiting portion 410, so that the first claw portion 312 and the second claw portion 313 can reliably clamp the second limiting portion 410, improving the installation reliability of the fire-fighting pipe 30 in the battery 10. Furthermore, the dimensions of the first claw portion 312, the second claw portion 313, and the second limiting portion 410 in the first direction x can also be the same or similar. Through this embodiment, the dimensions of the three components in the first direction x can be fully utilized to increase the frictional force between the second limiting portion 410 and the first claw portion 312 and the second claw portion 313, thereby further improving the installation reliability of the fire-fighting pipe 30 in the battery 10.

[0130] exist Figure 11 Based on the illustrated embodiment, Figure 12 This illustration shows another partially enlarged exploded schematic diagram of a battery 10 provided in one embodiment of this application.

[0131] like Figure 12 As shown in the embodiment of this application, the second limiting part 410 is a snap-fit ​​structure, which includes a first snap-fit ​​part 413 and a second snap-fit ​​part 414 arranged along the first direction x. The first snap-fit ​​part 413 is formed by the fixing member 40 extending in the direction away from the battery cell 20. The second snap-fit ​​part 414 is disposed at the end of the first snap-fit ​​part 413 away from the battery cell 20. In the second direction y, the size of the second snap-fit ​​part 414 is not smaller than the size of the first snap-fit ​​part 413. In addition, in the first limiting part 310 of the double-claw structure of the fire pipe 30, the first claw part 312 and / or the second claw part 313 are engaged with the second snap-fit ​​part 414.

[0132] Specifically, in this embodiment, the second limiting part 410 of the fastener 40 is a snap-fit ​​structure including a first snap-fit ​​part 413 and a second snap-fit ​​part 414. The second snap-fit ​​part 414 is positioned relative to the first snap-fit ​​part 413 and faces the fire-fighting pipe 30. Furthermore, the dimension of the second snap-fit ​​part 414 in the second direction y is not less than the dimension of the first snap-fit ​​part 413 in the second direction y. Therefore, by utilizing the larger second snap-fit ​​part 414, it is easier to achieve the snap-fit ​​of the second snap-fit ​​part 414 in the double-claw structure of the fire-fighting pipe 30, and the snap-fit ​​strength of the second snap-fit ​​part 414 in the double-claw structure is improved.

[0133] By way of example and not limitation, in some embodiments, in the first limiting portion 310 of the double-claw structure of the fire hydrant 30, a third protrusion 3101 is provided at the end of the first claw portion 311 and / or the second claw portion 312 near the battery cell 20. The second latching portion 414 includes a fourth protrusion 4141 protruding relative to the first latching portion 413 along the second direction y. The fourth protrusion 4141 cooperates with the third protrusion 3101 to limit the fire hydrant 30 in the first direction x. Through the technical solution of this embodiment, the latching strength between the second latching portion 414 and the double-claw structure in the first direction x can be improved.

[0134] For example, in Figure 12 In the illustrated embodiment, both the first claw portion 311 and the second claw portion 312 are provided with a third protrusion 3101 at one end near the battery cell 20, and the two third protrusions 3101 are arranged and opposite to each other along the second direction y. Corresponding to the two third protrusions 3101, at the end of the second limiting portion 410 away from the battery cell 20, the second latching portion 414 is provided with two fourth protrusions 4141, which are respectively located on both sides of the second latching portion 414 in the second direction y.

[0135] pass Figure 12 In the illustrated embodiment, after the second latching part 414 is installed between the first latching part 312 and the second latching part 313, each third protrusion 3101 and its corresponding fourth protrusion 4141 are arranged opposite each other in the first direction x, so that the third protrusion 3101 and the fourth protrusion 4141 can engage with each other. In addition, the third protrusion 3101 is disposed at the end of the first limiting part 310 near the battery cell 20, and the fourth protrusion 4141 is disposed at the end of the second limiting part 410 away from the battery cell 20. When the first limiting part 310 and the second limiting part 410 engage with each other, the fourth protrusion 4141 is disposed relative to the third protrusion 3101 toward the battery cell 20. The fourth protrusion 4141 can prevent the third protrusion 3101 and the double latching structure therein from moving away from the battery cell 20.

[0136] Understandably, besides... Figure 12 In addition to the embodiment shown, the third protrusion 3101 may be provided only in one of the first claw portion 312 and the second claw portion 313. Correspondingly, the second latch portion 414 may also be provided only on one side in the second direction y. Through this embodiment, the double claw structure and the second latch portion 414 can be mutually latched in the first direction x.

[0137] Additionally, it should be noted that in this embodiment, after the second latching part 414 is installed between the first latching part 312 and the second latching part 313, the relative positions of the third protrusion 3101 and the fourth protrusion 4141 are designed so that the fourth protrusion 4141 faces the battery cell 20 relative to the third protrusion 3101. Therefore, the fourth protrusion 4141 can be located at other positions on the second limiting part 410 besides being located at the end of the second limiting part 410 away from the battery cell 20. Similarly, the third protrusion 3101 can be located at other positions on the first latching part 312 and / or the second latching part 313 besides being located at the end of the first latching part 312 and / or the second latching part 313 near the battery cell 20. This embodiment does not limit the specific positions of the third protrusion 3101 and the fourth protrusion 4141.

[0138] Optionally, in Figure 12 In the embodiment shown, the third protrusion 3101 and the fourth protrusion 4141 are both block protrusions. Of course, in other embodiments, the third protrusion 3101 and the fourth protrusion 4141 may also be protrusions of other shapes. The embodiments of this application do not specifically limit the shape of the third protrusion 3101 and the fourth protrusion 4141.

[0139] In another embodiment of this application, the third protrusion 3101 is provided with a third inclined surface 3102 at the end near the battery cell 20, and the fourth protrusion 4141 is provided with a fourth inclined surface 4142 at the end away from the battery cell 20. The third inclined surface 3102 and the fourth inclined surface 4142 correspond to each other and are respectively inclined to the plane perpendicular to the first wall 201 of the battery cell 20.

[0140] exist Figure 12 Based on the illustrated embodiment, Figure 13 The diagram shows another partially enlarged schematic of a battery 10 provided in an embodiment of this application, wherein... Figure 13 Figure (a) is a magnified schematic diagram of a partial explosion. Figure 13 Figure (b) is a partially enlarged assembly diagram.

[0141] like Figure 13As shown, the fourth protrusion 4141 on the second latching part 414 has a fourth inclined surface 4142 at the end near the battery cell 20, and the third protrusion 3101 on the first claw part 312 and the second claw part 313 has a third inclined surface 3102 at the end away from the battery cell 20. When the second latching part 414 is installed on the first claw part 312 and the second claw part 313, the third inclined surface 3102 and the fourth inclined surface 4142 are opposite to each other and can slide to attach to each other. The first claw part 312 and the second claw part 313 slide to contact the fourth inclined surface 4142 of the second latching part 414 through their third inclined surface 3102, thereby facilitating the installation of the second latching part 414 between the first claw part 312 and the second claw part 313.

[0142] Optionally, the third inclined surface 3102 and the fourth inclined surface 4142 may be parallel to each other to optimize the sliding installation of the second latching part 414 between the first latching part 312 and the second latching part 313.

[0143] Through the technical solution of the embodiments of this application, a third protrusion 3101 is provided on the first claw portion 312 and / or the second claw portion 313, and a fourth protrusion 4141 that cooperates with the third protrusion 3101 is provided on the second latch portion 414. The third protrusion 3101 and the fourth protrusion 4141 can be respectively provided with mutually cooperating inclined surfaces. While ensuring that the second latch portion 414 can have a better latching effect with the first claw portion 312 and the second claw portion 313, the installation efficiency of the second latch portion 414 between the first claw portion 312 and the second claw portion 313 can be further improved. Thus, while ensuring the installation stability of the fire pipe 30 in the battery 10, the installation efficiency of the fire pipe 30 in the battery 10 is improved.

[0144] exist Figure 13 Based on the illustrated embodiment, Figure 14 Another three-dimensional exploded view of the battery 10 provided in one embodiment of this application is shown.

[0145] like Figure 14 As shown in the embodiment of this application, the first limiting part 310 is a double claw structure. The double claw structure extends along a third direction z. The second limiting part 410 in the fixing member 40 can slide along the third direction z in the double claw structure. The third direction z is parallel to the first wall 201 of the battery cell 20 and parallel to the extension direction of the fire pipe 30.

[0146] Specifically, in the first limiting part 310 of the double claw structure, the first claw part 312 and the second claw part 313 can extend along the third direction z and have a certain length in the third direction z, so that the second limiting part 410 in the fixing member 40 can slide between the first claw part 312 and the second claw part 313 along the third direction z.

[0147] During the operation of the battery cell 20, the internal chemical reaction causes the gas inside the battery cell 20 to expand, resulting in a corresponding expansion of the battery cell 20. When the battery cell 20 expands in the third direction z, it causes a change in the position of the fixing member 40 located on its first wall 201, and even a change in the position of the second limiting part 410 on the fixing member 40. Since the second limiting part 410 can slide between the first claw part 312 and the second claw part 313 of the first limiting part 310 along the third direction z, even if the expansion of the battery cell 20 causes a change in the position of the second limiting part 410, the impact on the fire-fighting pipe 30 is small or non-existent. Therefore, even if the battery cell 20 expands, the installation stability of the fire-fighting pipe 30 in the battery 10 remains high.

[0148] Optionally, such as Figure 14 As shown in the embodiments of this application, in addition to the first limiting part 310 of the double claw structure extending along the third direction z, the second limiting part 410 in the fixing member 40 may also extend along the third direction z, thereby improving the installation reliability between the second limiting part 410 and the double claw structure.

[0149] In addition, regarding the fastener 40 in this embodiment, except that the structure of its second limiting part 410 is different... Figure 9 In addition to the technical solution shown, other related technical solutions for the fastener 40 can be found above. Figure 9 The relevant descriptions of the embodiments shown are not detailed here.

[0150] Optionally, as an example rather than a limitation, in Figure 14 In the illustrated embodiment, in the third direction z, the extension length of the first limiting portion 310 of the double-claw structure is the same as the extension length of the fire-fighting pipe 30. In other embodiments, in the third direction z, the extension length of the first limiting portion 310 of the double-claw structure may be less than the extension length of the fire-fighting pipe 30. Specifically, in the third direction z, the extension length of the first limiting portion 310 matches the extension length of the second limiting portion 410.

[0151] Refer to the above text Figure 9According to the description of the illustrated embodiment, when the extension length of the first limiting part 310 in the third direction z is the same as the extension length of the fire-fighting pipe 30 in the third direction z, it is convenient for the fire-fighting pipe 30 to be installed on the fixing members 40 at multiple different positions through its first limiting part 310, thereby improving the installation efficiency of the fire-fighting pipe 30 in the battery 10. It also allows the fire-fighting pipe 30 to be applicable to more application scenarios, which is beneficial for the promotion and use of the fire-fighting pipe 30 in various types of batteries 10. When the extension length of the first limiting part 310 in the third direction z is less than the extension length of the fire-fighting pipe 30 in the third direction z, the overall manufacturing cost of the fire-fighting pipe 30 can be reduced.

[0152] In summary Figures 4 to 14 In the technical solution of the embodiment shown, the fire-fighting pipeline 30 may include at least one pair of first limiting parts 310. In the second direction y, each pair of first limiting parts 310 is located on both sides of the fire-fighting pipeline 30. The fixing member 40 may include at least one pair of second limiting parts 410, and each pair of second limiting parts 410 is correspondingly provided with each pair of first limiting parts 310.

[0153] Optionally, the fire hydrant 30 may include a pair of first limiting portions 310, located on both sides of the fire hydrant 30 in the second direction y, and the extension length of the pair of first limiting portions 310 in the third direction z is less than or equal to the extension length of the fire hydrant 30. In this embodiment, the fastener 40 includes at least a pair of second limiting portions 410, each pair of second limiting portions 410 being located on both sides of the fire hydrant 30 in the second direction y, and each pair of second limiting portions 410 being correspondingly provided with the pair of first limiting portions 310.

[0154] Optionally, the fire-fighting pipe 30 may include multiple pairs of first limiting portions 310. In the second direction y, each pair of first limiting portions 310 is located on both sides of the fire-fighting pipe 30, and the extension length of each pair of first limiting portions 310 in the third direction z is less than the extension length of the fire-fighting pipe 30. In this embodiment, the fastener 40 includes multiple pairs of second limiting portions 410. Each pair of second limiting portions 410 is located on both sides of the fire-fighting pipe 30 in the second direction y, and in the third direction z, the multiple pairs of second limiting portions 410 may be arranged in a one-to-one correspondence with the multiple pairs of first limiting portions 310.

[0155] Through the technical solution of the embodiments of this application, the fire-fighting pipeline 30 is provided with at least one pair of first limiting parts 310 on both sides in the second direction y. The at least one pair of first limiting parts 310 cooperate with each other with at least one pair of corresponding second limiting parts 410 to achieve a more reliable and stable limiting and fixing of the fire-fighting pipeline 30 in the second direction y, thereby improving the installation stability of the fire-fighting pipeline 30 in the battery 10.

[0156] In addition to the technical solutions of the above-described embodiments, in other embodiments, the first limiting part 310 may not be provided on both sides of the fire-fighting pipe 30 in the second direction y, but may be provided on the side of the fire-fighting pipe 30 facing the battery cell 20, that is, on the side of the fire-fighting pipe 30 in the first direction x. Alternatively, the first limiting part 310 may also be provided on both sides of the fire-fighting pipe 30 in the third direction z. This application embodiment does not specifically limit the specific position and number of the first limiting part 310 on the fire-fighting pipe 30, aiming to achieve mutual cooperation between the first limiting part 310 and the second limiting part 410 on the fixing member 40 to achieve stable installation of the fire-fighting pipe 30 in the battery 10.

[0157] In addition, in this application, besides the single-claw structure or double-claw structure described in the above embodiments, the first limiting part 310 can also be a three-claw structure or a structure with more than one claw, to further enhance the installation stability of the fire-fighting pipe 30 in the battery 10. In this case, each claw in the multi-claw structure can refer to the relevant technical solution in the above embodiments, and the second limiting part 410 corresponding to the multi-claw structure can also refer to the relevant technical solution in the above embodiments, which will not be described in detail here.

[0158] Figure 15 Another three-dimensional exploded view of the battery 10 provided in one embodiment of this application is shown.

[0159] like Figure 15 As shown, the battery 10 includes a plurality of battery cells 20 that are attached to each other along a third direction z. The fire-fighting pipe 30 extends along the third direction z and is correspondingly provided with the pressure relief mechanism 213 in the plurality of battery cells 20.

[0160] Optionally, such as Figure 15 As shown, in a row of battery cells 20 arranged along the third direction z, only some battery cells 20 are connected to the fire-fighting pipe 30 by fasteners 40. The fire-fighting pipe 30 is provided with a first limiting part 310, and the fasteners 40 are provided with a second limiting part 410. The relevant technical solutions for the first limiting part 310 and the second limiting part 410 can be found above. Figures 4 to 14 The technical solutions in any of the embodiments.

[0161] By implementing this method, the stability of the fire-fighting pipe 30 in the battery 10 can be guaranteed, while the number of fasteners 40 in the battery 10 can be reduced, thereby reducing the manufacturing cost of the battery 10.

[0162] Optionally, in Figure 15 In the illustrated embodiment, at least one battery cell 20 without a fixing member 40 is spaced apart from the battery cells 20 with fixing members 40. In this embodiment, the fixing member 40 can be designed to be relatively large. For example, in the third direction z, the fixing member 40 can be provided not only on the first wall 201 of the battery cell 20 to which it is located, but also on the first wall 201 of the battery cell 20 adjacent to it. Therefore, through the technical solution of this embodiment, on the one hand, a relatively stable and reliable fixation of the fixing member 40 on the battery cell 20 can be achieved by using a larger-sized fixing member 40; on the other hand, a larger-sized second limiting part 410 can also be provided on the larger-sized fixing member 40 to improve the installation reliability between the second limiting part 410 and the first limiting part 310 on the fire hydrant 30, thereby improving the installation stability of the fire hydrant 30 in the battery 10.

[0163] Understandably, in Figure 15 The battery 10 shown may further include a housing 100 for accommodating multiple battery cells 20. For example, in Figure 15 The housing 100 shown can be used to accommodate two rows of battery cells 20 arranged along a second direction y, with multiple battery cells 20 in each row arranged along a third direction z. As an example, Figure 15 The image only shows one of the two rows of battery cells 20.

[0164] It is also understandable that the above text Figures 4 to 8 ,as well as Figures 10 to 13 The cross-sectional schematic diagram in the diagram can be Figure 15 A schematic diagram of the cross-section along the C-C' direction, as shown above. Figure 9 and Figure 14 The three-dimensional schematic diagram shown can be Figure 15 A partial 3D view within. In other words, the above text Figures 4 to 14 The technical solutions of any of the embodiments in this application can be applied to Figure 15 The application embodiment shown.

[0165] In the above-mentioned embodiments, the wall of the fire-fighting pipeline 30 can be a uniform thickness. Under this embodiment, the manufacturing method of the fire-fighting pipeline 30 is relatively convenient and the manufacturing process is relatively mature.

[0166] Optionally, in order to further increase the strength of the fire-fighting pipe 30 and enhance its impact resistance, so as to ensure the fire-fighting and temperature regulation functions of the fire-fighting pipe 30 in the battery 10, at least part of the pipe wall of the fire-fighting pipe 30 can be designed to be thicker.

[0167] In some possible implementations, the fire-fighting conduit 30 includes a first pipe wall 301 and a second pipe wall 302 disposed opposite to each other along a first direction x, wherein the first pipe wall 301 is further away from the battery cell 20 relative to the second pipe wall 302, wherein the thickness of the first pipe wall 301 is greater than the thickness of the second pipe wall 302, and / or, the first pipe wall 301 is provided with a reinforcing member 50.

[0168] Figure 16 This application shows a schematic diagram of a fire-fighting pipe 30 according to an embodiment of the present application, wherein, Figure 16 Figure (a) is a three-dimensional structural diagram of fire-fighting pipe 30. Figure 16 Figure (b) is a schematic cross-sectional view of the fire pipe 30 shown in Figure (a).

[0169] As an example rather than a limitation, in Figure 16 In the fire-fighting pipe 30, the cross-section is approximately racetrack-shaped. The first pipe wall 301 and the second pipe wall 302, which are arranged opposite each other along the first direction x, can be flat plate structures. The thickness of the first pipe wall 301 in the first direction x is greater than the thickness of the second pipe wall 302 in the first direction x.

[0170] It should be noted that in other embodiments, the fire-fighting pipe 30 can also be a pipe of other shapes, such as a circular pipe, a quadrilateral pipe, or a polygonal pipe, etc. In this embodiment, the pipe wall of the fire-fighting pipe 30 can also include a first pipe wall 301 and a second pipe wall 302 arranged opposite to each other along the first direction x. The first pipe wall 301 and the second pipe wall 302 can be a flat plate structure, a curved plate structure, or other shapes. The specific shape and structure of the fire-fighting pipe 30, the first pipe wall 301, and the second pipe wall 302 are not limited in this application embodiment.

[0171] Through the technical solution of this application embodiment, in the fire-fighting pipeline 30, the thickness of the first pipe wall 301 away from the battery cell 20 is greater than the thickness of the second pipe wall 302 close to the battery cell 20. Therefore, the first pipe wall 301 away from the battery cell 20 has a larger thickness and higher strength, which can withstand the impact of external forces on the fire-fighting pipeline 30 to a greater extent, thus improving the reliability of the fire-fighting pipeline 30 in the battery 10. At the same time, when the discharge in the battery cell 20 is discharged through the pressure relief mechanism 213, on the one hand, the discharge can more easily break through the thinner second pipe wall 302, allowing the fire-fighting medium in the fire-fighting pipeline 30 to be discharged, thereby playing a fire-fighting role. On the other hand, when the discharge reaches the first pipe wall 301 through the second pipe wall 302, the first pipe wall 301, with its larger thickness and higher strength, can withstand the impact of the discharge. The first pipe wall 301 is not easily broken by the discharge, thus preventing the fire-fighting medium in the fire-fighting pipeline 30 from being discharged through the gap in the first pipe wall 301, avoiding unnecessary waste of the fire-fighting medium, thereby improving the fire-fighting effect of the fire-fighting pipeline 30.

[0172] Optionally, in Figure 16 In the illustrated embodiment, the first pipe wall 301 includes a protrusion away from the battery cell 20. This protrusion allows the thickness of the first pipe wall 301 to be greater than the thickness of the second pipe wall 302. In this embodiment, the thickness design of the first pipe wall 301 does not affect the pipe capacity in the fire-fighting pipeline 30 used to contain the fire-fighting medium. Of course, in other embodiments, to save installation space required by the fire-fighting pipeline 30, the first pipe wall 301 may also protrude appropriately towards the interior of the fire-fighting pipeline 30. Furthermore, in... Figure 16 In the embodiment shown, the cross-section of the first pipe wall 301 is approximately trapezoidal. In other embodiments, the cross-section of the first pipe wall 301 may also be quadrilateral or other shapes. The specific shape of the cross-section of the first pipe wall 301 is not specifically limited in this application embodiment.

[0173] Figure 17 This application shows another structural schematic diagram of a fire-fighting pipe 30 provided in one embodiment, wherein, Figure 17 Figure (a) is a three-dimensional structural diagram of fire-fighting pipe 30. Figure 17 Figure (b) is a schematic cross-sectional view of the fire pipe 30 shown in Figure (a).

[0174] As shown in Figure 17, in the fire-fighting pipeline 30 provided in this embodiment, a reinforcing member 50 is provided on the first pipe wall 301. Optionally, the reinforcing member 50 is provided on the side of the first pipe wall 301 away from the battery cell 20, and the provision of the reinforcing member 50 will not affect the pipeline capacity within the fire-fighting pipeline 30.

[0175] Optionally, the reinforcing member 50 can be a strip structure. In some related technologies, the strip-shaped reinforcing member 50 can also be referred to as a reinforcing rib. By providing the reinforcing member 50 on the first pipe wall 301, the strength of the first pipe wall 301 can also be improved, thereby enhancing the impact resistance of the first pipe wall 301 and improving the reliability of the fire-fighting pipe 30 in the battery 10.

[0176] As an example rather than a limitation, in Figure 17 In the illustrated embodiment, the reinforcing member 50 includes at least one first reinforcing member extending along a second direction y, the at least one first reinforcing member being arranged along a third direction z; and / or at least one second reinforcing member extending along a third direction z, the at least one second reinforcing member being arranged along the second direction y.

[0177] Optionally, in some embodiments, the dimension of the first reinforcing member in the second direction y can be similar to or the same as the dimension of the first pipe wall 301 in the second direction y. Optionally, in other embodiments, such as Figure 17 As shown, the first reinforcing member can further cover the connecting portion 311 in the first limiting member 310, that is, the dimension of the first reinforcing member in the second direction y can be similar to or the same as the sum of the dimensions of the first pipe wall 301 and the connecting portion 311 in the second direction y. The strength of the first pipe wall 301 in the second direction y can be improved by the provision of at least one first reinforcing member.

[0178] Similarly, the dimensions of the second reinforcing member in the third z-direction can be similar to or the same as the dimensions of the first pipe wall 301 in the third z-direction. The provision of at least one second reinforcing member can improve the strength of the first pipe wall 301 in the third z-direction.

[0179] It is understandable that, in order to significantly improve the strength of the first pipe wall 301, in some embodiments, the first pipe wall 301, while having a large thickness, may be further reinforced with a reinforcing member 50. That is, in summary... Figure 16 and Figure 17 The solution shown in the embodiment can produce a fire-fighting pipe 30 with high strength.

[0180] Figure 18 This application shows another structural schematic diagram of a fire-fighting pipe 30 provided in one embodiment, wherein, Figure 18 Figure (a) is a three-dimensional structural diagram of fire-fighting pipe 30. Figure 18 Figure (b) is a schematic cross-sectional view of the fire pipe 30 shown in Figure (a).

[0181] like Figure 18 As shown in this embodiment, in the second direction y, the size of the first pipe wall 301 is larger than the size of the second pipe wall 302.

[0182] As an example rather than a limitation, in Figure 18 In the embodiment shown, the cross-section of the fire-fighting pipe 30 can be an inverted trapezoid, and the dimension of the first pipe wall 301 in the second direction y can be greater than the dimension of the second pipe wall 302 in the second direction y.

[0183] pass Figure 18 In the illustrated embodiment, by designing the dimensions of the first pipe wall 301 and the second pipe wall 302 in the second direction y, the strength of the first pipe wall 301 can be made greater than that of the second pipe wall 302. This means the first pipe wall 301 can have higher strength and can withstand the impact of external forces on the fire-fighting pipeline 30 to a greater extent, thus improving the reliability of the fire-fighting pipeline 30 in the battery 10. However, when the discharge from inside the battery cell 20 impacts the second pipe wall 302 through the pressure relief mechanism 213, the second pipe wall 302 may adhere entirely to the first pipe wall 301. When the dimensions of the first pipe wall 301 and the second pipe wall 302 are the same, this mutual adhesion will block the flow channel, thereby hindering the flow of the fire-fighting medium in the fire-fighting pipeline 30 into the corresponding pressure relief mechanism 213 and the battery cell 20, affecting the fire-fighting effect of the fire-fighting pipeline 30. With the technical solution of this application embodiment, the size of the first pipe wall 301 in the second direction y is larger than the size of the second pipe wall 302 in the second direction y. Even if the second pipe wall 302 is attached to the first pipe wall 301, it will not completely block the flow channel, so that the fire-fighting medium can flow into the corresponding pressure relief mechanism 213 and the battery cell 20 to play a good fire-fighting role.

[0184] Optionally, in Figure 18 In the illustrated embodiment, the first pipe wall 301 of the fire-fighting pipeline 30 can simultaneously adopt the above-mentioned... Figure 16 and / or Figure 17 The technical solution is that the thickness of the first pipe wall 301 is greater than the thickness of the second pipe wall 302, and / or the first pipe wall 301 is provided with a reinforcing member 50 to further improve the strength of the first pipe wall 301.

[0185] It should be noted that the above text Figures 16 to 18 In the middle, the first limiting part 310 in the fire protection pipe 30 is Figure 8 The first limiting part 310 shown is illustrated by example. Figures 16 to 18 The first limiting part 310 in the middle can also be the above text Figures 4 to 15 The first limiting portion 310 in any embodiment. In other words, Figures 16 to 18 In the illustrated embodiment, the relevant technical solutions for the first pipe wall 301, the second pipe wall 302, and the reinforcing member 50 can be applied to the above-described... Figures 4 to 15 Any of the embodiments.

[0186] One embodiment of this application also provides an electrical device, which may include the battery 10 in the foregoing embodiments, the battery 10 being used to provide electrical energy to the electrical device.

[0187] Alternatively, the electrical device can be a vehicle, a ship, or a spacecraft.

[0188] The battery 10 and the power-consuming device of the present application embodiments have been described above. The method and apparatus for preparing the battery of the present application embodiments will be described below. For parts not described in detail, please refer to the foregoing embodiments.

[0189] Figure 19 A schematic flowchart of a method 300 for preparing a battery according to an embodiment of this application is shown. Figure 19 As shown, the method 300 may include the following steps.

[0190] S301: Provide a battery cell 20, the battery cell 20 including a first wall 201, the first wall 201 being provided with a pressure relief mechanism 213, the pressure relief mechanism 213 being actuated to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold.

[0191] S302: Provide a fire-fighting conduit 30 for containing fire-fighting media and for discharging fire-fighting media when the pressure relief mechanism 213 is actuated.

[0192] S303: Provide a fastener 40, which is disposed between the first wall 201 and the fire pipe 30.

[0193] S304: The fire-fighting pipe 30 is fixedly installed on the fastener 40.

[0194] The fire-fighting pipe 30 includes a first limiting part 310, and the fastener 40 includes a second limiting part 410. The first limiting part 310 and the second limiting part 410 cooperate with each other to limit the fire-fighting pipe 30 in a first direction x and a second direction y. The first direction x is perpendicular to the first wall 201, and the second direction y is parallel to the first wall 201 and perpendicular to the extension direction of the fire-fighting pipe 30.

[0195] Figure 20 A schematic block diagram of a battery fabrication apparatus 400 according to one embodiment of this application is shown. Figure 20 As shown, the battery manufacturing apparatus 400 may include a providing module 401 and an mounting module 402.

[0196] A module 401 is provided for providing a battery cell 20, the battery cell 20 including a first wall 201, on which a pressure relief mechanism 213 is provided, the pressure relief mechanism 213 being actuated to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold.

[0197] The providing module 401 is also used to provide a fire-fighting conduit 30 for containing fire-fighting media and for discharging fire-fighting media when the pressure relief mechanism 213 is actuated.

[0198] The module 401 is also used to provide a fastener 40, which is disposed between the first wall 201 and the fire pipe 30.

[0199] The mounting module 402 is used to fix the fire pipe 30 to the fastener 40.

[0200] The fire-fighting pipe 30 includes a first limiting part 310, and the fastener 40 includes a second limiting part 410. The first limiting part 310 and the second limiting part 410 cooperate with each other to limit the fire-fighting pipe 30 in a first direction x and a second direction y. The first direction x is perpendicular to the first wall 201, and the second direction y is parallel to the first wall 201 and perpendicular to the extension direction of the fire-fighting pipe 30.

[0201] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This 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 battery (10), characterized in that, include: The battery cell (20) includes a first wall (201) on which a pressure relief mechanism (213) is provided. The pressure relief mechanism (213) is actuated to release the internal pressure when the internal pressure or temperature of the battery cell (20) reaches a threshold. Fire-fighting pipe (30) for containing fire-fighting medium, said fire-fighting pipe (30) for discharging said fire-fighting medium when said pressure relief mechanism (213) is actuated; A fastener (40) is disposed between the first wall (201) and the fire pipe (30), and the fastener (40) is used to fix the fire pipe (30). The fire-fighting pipe (30) includes a first limiting part (310), and the fixing member (40) includes a second limiting part (410). The first limiting part (310) and the second limiting part (410) cooperate with each other to limit the fire-fighting pipe (30) in a first direction (x) and a second direction (y). The first direction (x) is perpendicular to the first wall (201), and the second direction (y) is parallel to the first wall (201) and perpendicular to the extension direction of the fire-fighting pipe (30). The first limiting part (310) includes a connecting part (311) and a first claw part (312). The connecting part (311) is formed by the pipe wall of the fire pipe (30) extending along the second direction (y). The first claw part (312) is connected to the connecting part (311) and extends toward the battery cell (20).

2. The battery (10) according to claim 1, characterized in that, The first limiting part (310) is a single claw structure. The connecting part (311) and the first claw part (312) form the single claw structure. The first claw part (312) is engaged with the second limiting part (410).

3. The battery (10) according to claim 2, characterized in that, The second limiting part (410) is a slot structure, which includes a first slot wall (411) and a second slot wall (412) arranged along the second direction (y). The first slot wall (411) and the second slot wall (412) are used to clamp the first claw part (312) to limit the fire pipe (30) in the first direction (x) and the second direction (y).

4. The battery (10) according to claim 3, characterized in that, The first slot wall (411) and / or the second slot wall (412) are provided with a first protrusion (4101) at the end away from the battery cell (20), and the first claw portion (312) is provided with a second protrusion (3121) at the end near the battery cell (20). The first protrusion (4101) and the second protrusion (3121) cooperate with each other to limit the fire pipe (30) in the first direction (x).

5. The battery (10) according to claim 4, characterized in that, The first protrusion (4101) has a first inclined surface (4102) at the end away from the battery cell (20), and the second protrusion (3121) has a second inclined surface (3122) at the end near the battery cell (20). The first inclined surface (4102) and the second inclined surface (3122) correspond to each other and are respectively inclined to the plane perpendicular to the first wall (201).

6. The battery (10) according to claim 3, characterized in that, The slot structure extends along a third direction (z), and the first claw portion (312) is able to slide in the slot structure along the third direction (z), wherein the third direction (z) is parallel to the first wall (201) and parallel to the extension direction of the fire pipe (30).

7. The battery (10) according to claim 1, characterized in that, The first limiting part (310) further includes a second claw part (313). The first limiting part (310) is a double claw structure. The connecting part (311), the first claw part (312) and the second claw part (313) form the double claw structure. The first claw part (312) and the second claw part (313) are arranged along the second direction (y). The first claw part (312) and the second claw part (313) are connected to the connecting part (311) and extend toward the battery cell (20). The first claw portion (312) and the second claw portion (313) are used to clamp the second limiting portion (410) to limit the fire pipe (30) in the first direction (x) and the second direction (y).

8. The battery (10) according to claim 7, characterized in that, The second limiting part (410) is a snap-fit ​​structure, which includes a first snap-fit ​​part (413) and a second snap-fit ​​part (414) arranged along the first direction (x). The first snap-fit ​​part (413) is formed by the fixing member (40) extending in a direction away from the battery cell (20). The second snap-fit ​​part (414) is disposed at one end of the first snap-fit ​​part (413) away from the battery cell (20). In the second direction (y), the size of the second snap-fit ​​part (414) is not smaller than the size of the first snap-fit ​​part (413). The first claw part (312) and / or the second claw part (313) are engaged with the second snap-fit ​​part (414).

9. The battery (10) according to claim 8, characterized in that, The first claw portion (312) and / or the second claw portion (313) are provided with a third protrusion (3101) at one end near the battery cell (20). The second latching part (414) includes a fourth protrusion (4141) protruding relative to the first latching part (413) along the second direction (y), the fourth protrusion (4141) cooperating with the third protrusion (3101) to limit the fire pipe (30) in the first direction (x).

10. The battery (10) according to claim 9, characterized in that, The third protrusion (3101) has a third inclined surface (3102) at the end near the battery cell (20), and the fourth protrusion (4141) has a fourth inclined surface (4142) at the end away from the battery cell (20). The third inclined surface (3102) and the fourth inclined surface (4142) correspond to each other and are respectively inclined to the plane perpendicular to the first wall (201).

11. The battery (10) according to claim 7, characterized in that, The double claw structure extends along a third direction (z), and the second limiting part (410) can slide along the third direction (z) in the double claw structure, wherein the third direction (z) is parallel to the first wall (201) and parallel to the extension direction of the fire pipe (30).

12. The battery (10) according to any one of claims 1 to 11, characterized in that, The first limiting part (310) extends along a third direction (z), and the extension length of the first limiting part (310) in the third direction (z) is the same as the extension length of the fire pipe (30), wherein the third direction (z) is parallel to the first wall (201) and parallel to the extension direction of the fire pipe (30).

13. The battery (10) according to any one of claims 1 to 11, characterized in that, The fire-fighting pipe (30) includes at least one pair of first limiting parts (310), and in the second direction (y), each pair of first limiting parts (310) is located on both sides of the fire-fighting pipe (30); The fastener (40) includes at least one pair of second limiting parts (410), each pair of second limiting parts (410) being provided corresponding to each pair of first limiting parts (310).

14. The battery (10) according to any one of claims 1 to 11, characterized in that, The fire-fighting pipe (30) includes a first pipe wall (301) and a second pipe wall (302) disposed opposite to each other along the first direction (x), wherein the first pipe wall (301) is further away from the battery cell (20) relative to the second pipe wall (302), wherein the thickness of the first pipe wall (301) is greater than the thickness of the second pipe wall (302), and / or, the first pipe wall (301) is provided with a reinforcing member (50).

15. The battery (10) according to claim 14, characterized in that, In the second direction (y), the size of the first pipe wall (301) is larger than the size of the second pipe wall (302).

16. An electrical appliance, characterized in that, include: The battery (10) according to any one of claims 1 to 15 is used to provide electrical energy to the electrical device.

17. A method for preparing a battery, characterized in that, include: Provide (S301) a battery cell (20), the battery cell (20) including a first wall (201), the first wall (201) being provided with a pressure relief mechanism (213), the pressure relief mechanism (213) being actuated to release the internal pressure when the internal pressure or temperature of the battery cell (20) reaches a threshold; Provide (S302) a fire-fighting conduit (30) for containing fire-fighting media and discharging the fire-fighting media when the pressure relief mechanism (213) is actuated; Provide (S303) a fastener (40) disposed between the first wall (201) and the fire pipe (30); The fire-fighting pipe (30) is fixed (S304) and installed on the fastener (40); The fire-fighting pipe (30) includes a first limiting part (310), and the fixing member (40) includes a second limiting part (410). The first limiting part (310) and the second limiting part (410) cooperate with each other to limit the fire-fighting pipe (30) in a first direction (x) and a second direction (y). The first direction (x) is perpendicular to the first wall (201), and the second direction (y) is parallel to the first wall (201) and perpendicular to the extension direction of the fire-fighting pipe (30). The first limiting part (310) includes a connecting part (311) and a first claw part (312). The connecting part (311) is formed by the pipe wall of the fire-fighting pipe (30) extending along the second direction (y). The first claw part (312) is connected to the connecting part (311) and extends toward the battery cell (20).

18. An apparatus for manufacturing a battery, characterized in that, include: Provide module (401) for: A battery cell (20) is provided, the battery cell (20) including a first wall (201), the first wall (201) being provided with a pressure relief mechanism (213), the pressure relief mechanism (213) being actuated to release the internal pressure when the internal pressure or temperature of the battery cell (20) reaches a threshold; A fire-fighting conduit (30) is provided, the fire-fighting conduit (30) being used to contain fire-fighting media and to discharge the fire-fighting media when the pressure relief mechanism (213) is actuated; A fastener (40) is provided, the fastener (40) being disposed between the first wall (201) and the fire pipe (30); The mounting module (402) is used to fix the fire pipe (30) to the fastener (40); The fire-fighting pipe (30) includes a first limiting part (310), and the fixing member (40) includes a second limiting part (410). The first limiting part (310) and the second limiting part (410) cooperate with each other to limit the fire-fighting pipe (30) in a first direction (x) and a second direction (y). The first direction (x) is perpendicular to the first wall (201), and the second direction (y) is parallel to the first wall (201) and perpendicular to the extension direction of the fire-fighting pipe (30). The first limiting part (310) includes a connecting part (311) and a first claw part (312). The connecting part (311) is formed by the pipe wall of the fire-fighting pipe (30) extending along the second direction (y). The first claw part (312) is connected to the connecting part (311) and extends toward the battery cell (20).

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