BATTERY, POWER CONSUMPTION DEVICE, AND BATTERY MANUFACTURING METHOD AND APPARATUS

Abstract

The present application provides a battery, a power consuming device, and a method and apparatus for manufacturing the battery, which can enhance the safety of the battery. The battery includes a battery cell (20), a first wall (201) of which includes the battery cell (20) having a pressure relief mechanism (213) installed therein, a fire duct (30) for storing a fire-fighting medium and discharging the fire-fighting medium when the pressure relief mechanism (213) is activated, and a fixing device (40) installed between the first wall (201) and the fire duct (30), where the fire duct (30) includes a first regulating portion (310), and the fixing device (40) includes a second regulating portion (410), and the two regulating portions are fitted together to be used to regulate the fire duct (30) in a first direction (x) and a second direction (y), where 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 duct (30). This solution allows the fire duct to be installed relatively stably on the battery, thereby enhancing the safety performance of the battery.

Description

[Technical field]

[0001] TECHNICAL FIELD Embodiments of the present application relate to the field of batteries, and more particularly to batteries, power consuming devices, and methods and apparatus for manufacturing batteries. [Background technology]

[0002] Energy conservation and reducing pollutant emissions are the keys to the sustainable development of the automotive industry. In this context, electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages in energy conservation and environmental protection. Battery technology is also a key factor in the development of electric vehicles.

[0003] In the development of battery technology, apart from the improvement of battery performance, safety issues are also one of the issues that cannot be ignored. If the safety of a battery cannot be guaranteed, the battery cannot be used. Therefore, how to reinforce the safety of a battery is one of the technical issues in battery technology that needs to be solved as soon as possible. Summary of the Invention

[0004] The present application provides a battery, a power consuming device, and a method and apparatus for manufacturing the battery, which can enhance the safety of the battery.

[0005] According to a first aspect, a battery is provided, the battery including a battery cell including a first wall, the first wall being provided with a pressure relief mechanism that is activated to release internal pressure when an internal pressure or temperature of the battery cell reaches a threshold value, a fire duct that contains a fire-fighting medium and discharges the fire-fighting medium when the pressure relief mechanism is activated, and a fastener that is installed between the first wall and the fire duct and fixes the fire duct, wherein the fire duct includes a first regulating portion and the fastener includes a second regulating portion, the first regulating portion and the second regulating portion engage with each other to regulate the fire duct 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 duct.

[0006] According to the technical solution of the embodiment of the present application, a fire duct is installed on the battery, and when the pressure relief mechanism of the battery cell is operating, a fire-fighting medium can be discharged, and the temperature of the discharged material of the battery cell or the inside of the battery cell can be reduced, thereby improving the safety performance of the battery. In addition, a first restricting part is installed on the fire duct, and a fixing device is further installed on the battery, and a second restricting part is installed on the fixing device, and the first restricting part and the second restricting part are fitted together to restrict the fire duct in multiple directions, so that the fire duct is installed on the battery relatively stably, and can achieve relatively reliable fire fighting and temperature regulating effects, thereby enhancing the safety performance of the battery.

[0007] In some possible embodiments, the first regulating portion is a single locking claw structure, the single locking claw structure including a connection portion and a first locking claw portion, the connection portion being formed by the pipe wall of the fire duct extending along the second direction, the first locking claw portion being connected to the connection portion and extending toward the battery cell, and the first locking claw portion being engaged with the second regulating portion.

[0008] The technical proposal of this embodiment allows the first regulating part on the fire duct to be designed as a single locking claw structure, and to realize the locking with the second regulating part on the fastener, ensuring the stability of the connection between the first regulating part and the second regulating part, while at the same time making it relatively easy to realize the installation of the single locking claw structure on the fire duct, and relatively improving the production efficiency of the fire duct.

[0009] In some possible embodiments, the second regulating portion is a locking groove structure, which includes a first locking groove wall and a second locking groove wall aligned along the second direction, and the first locking groove wall and the second locking groove wall are used to clamp the first locking claw portion to regulate the fire duct in the first direction and the second direction.

[0010] According to the technical proposal of this embodiment, the second regulating portion on the fixing device is designed as a locking groove structure that fits into the first locking claw portion, and the first locking groove wall and the second locking groove wall in this locking groove structure clamp the first locking claw portion, thereby improving the locking strength between the first regulating portion and the second regulating portion, thereby improving the regulating and fixing effect on the fire duct in the first direction and the second direction, and improving the installation stability of the fire duct in the battery.

[0011] In some possible embodiments, a first protrusion is provided on an end of the first locking groove wall and / or the second locking groove wall away from the battery cell, and a second protrusion is provided on an end of the first locking claw portion closer to the battery cell, and the first protrusion and the second protrusion fit together to restrict the fire duct in a first direction.

[0012] According to the technical proposal of this embodiment, after the first locking groove wall and / or the second locking groove wall and the first locking claw portion are locked with each other, the second protrusion on the first locking claw portion is installed toward the battery cell relative to the first protrusion on the first locking groove wall and / or the second locking groove wall, and this first protrusion prevents the second protrusion and the first locking claw portion where it is located from moving away from the battery cell, thereby further improving the locking strength of the second regulating portion and the first regulating portion in the first direction, and improving the regulating and fixing effect of the fire duct in the first direction.

[0013] In some possible embodiments, a first inclined surface is provided at an end of the first protrusion away from the battery cell, and a second inclined surface is provided at an end of the second protrusion close to the battery cell, the first inclined surface and the second inclined surface corresponding to each other and each inclined to a plane perpendicular to the first wall.

[0014] According to the technical solution of this embodiment, the first locking claw portion is two The first and / or second locking groove walls are provided with a protrusion. two The projections of the first and second fittings are oneWhen the protrusion is installed, the first protrusion and the second protrusion may be provided with inclined surfaces that fit each other, which can ensure that the first locking claw part and the first locking groove wall and the second locking groove wall have a relatively good locking effect, and at the same time, can further improve the installation efficiency between the first locking claw part and the second locking groove wall. Therefore, the technical solution of this embodiment can ensure the installation stability of the fire duct in the battery, and at the same time, can improve the installation efficiency of the fire duct in the battery.

[0015] In some possible embodiments, the locking groove structure extends along a third direction, and the first locking claw portion can slide in the locking groove structure along the third direction, where the third direction is parallel to the first wall and parallel to the extension direction of the fire duct.

[0016] According to the technical solution of this embodiment, the second restricting portion of the locking groove structure extends along the third direction, so that the locking groove structure has a certain length in the third direction. The first locking claw portion of the fire duct can slide along the locking groove structure along the third direction. During the operation of the battery cell, the battery cell expands due to its internal chemical reaction. When the battery cell expands in the third direction, it causes a change in the position of the fastener located on the first wall, or causes a change in the position of the second restricting portion on the fastener. Since the first locking claw portion of the fire duct can slide along the second restricting portion of the locking groove structure along the third direction, even if the expansion of the battery cell causes a change in the position of the second restricting portion, the effect on the fire duct is relatively small or no, so that even if the battery cell expands, the stability of the installation of the battery in the fire duct is still relatively high.

[0017] In some possible embodiments, the first regulating portion is a double locking claw structure, which includes a connection portion and a first locking claw portion and a second locking claw portion aligned along the second direction, the connection portion is formed by the pipe wall of the fire duct extending along the second direction, the first locking claw portion and the second locking claw portion are connected to the connection portion and extend toward the battery cell, and the first locking claw portion and the second locking claw portion are used to clamp the second regulating portion to regulate the fire duct in the first direction and the second direction.

[0018] According to the technical solution of this embodiment, a first restricting part of a double-claw structure is installed on the fire duct, and the double-claw structure is used to clamp the second restricting part on the fastener to realize the installation of the fire duct in the battery. Specifically, after the double-claw structure is clamped by the second restricting part, the double-claw structure can achieve good restricting and fixing effect on the second restricting part in both of the two opposite child directions in the second direction, so that the fire duct can have a relatively high stability in the second direction. In addition, when the double-claw structure clamps the second restricting part, there is an interaction force between the double-claw structure and the second restricting part in the first direction, which can ensure that the fire duct also has a certain stability in the first direction.

[0019] In some possible embodiments, the second regulating portion is a locking structure, the locking structure includes a first locking portion and a second locking portion aligned along a first direction, the first locking portion is formed by a fastener to extend along a direction away from the battery cell, the second locking portion is installed at an end of the first locking portion away from the battery cell, in the second direction, the size of the second locking portion is equal to or greater than the size of the first locking portion, and the first locking claw portion and / or the second locking claw portion is locked to the second locking portion.

[0020] According to the technical proposal of this embodiment, the second regulating part is designed as a locking structure including a first locking part and a second locking part, in which the second locking part is installed toward the fire duct, and the size of the second locking part in the second direction is equal to or larger than the size of the first locking part in the second direction. Therefore, by utilizing the second locking part having a relatively large size, it is possible to easily realize the locking of the second locking part in the double locking claw structure of the fire duct, and to improve the locking strength of the second locking part in the double locking claw structure.

[0021] In some possible embodiments, a third protrusion is provided on the end of the first locking claw portion and / or the second locking claw portion close to the battery cell, and the second locking portion includes a fourth protrusion protruding relative to the first locking portion along the second direction, and the fourth protrusion and the third protrusion fit together to regulate the fire duct in the first direction.

[0022] According to the technical proposal of this embodiment, after the first locking claw portion and / or the second locking claw portion and the second locking portion are locked to each other, the fourth protrusion on the second locking portion is positioned away from the battery cell relative to the third protrusion on the first locking claw portion and / or the second locking claw portion, and this fourth protrusion prevents the third protrusion and the first locking claw portion and / or the second locking claw portion on which it is located from moving away from the battery cell, thereby further improving the locking strength of the second regulating portion and the first regulating portion in the first direction, and improving the regulating and fixing effect of the fire duct in the first direction.

[0023] In some possible embodiments, a third inclined surface is provided at an end of the third protrusion close to the battery cell, and a fourth inclined surface is provided at an end of the fourth protrusion away from the battery cell, the third inclined surface and the fourth inclined surface corresponding to each other and each inclined to a plane perpendicular to the first wall.

[0024] According to the technical proposal of this embodiment, a third protrusion is provided on the first locking claw portion and / or the second locking claw portion, and a fourth protrusion that fits with the third protrusion is provided on the second locking portion, and the third protrusion and the fourth protrusion may be provided with inclined surfaces that fit with each other, thereby ensuring that the second locking portion and the first locking claw portion and the second locking claw portion can have a relatively excellent locking effect, and at the same time, further improving the installation efficiency between the first locking claw portion and the second locking claw portion of the second locking portion, thereby ensuring the installation stability of the fire duct in the battery, and at the same time, improving the installation efficiency of the fire duct in the battery.

[0025] In some possible embodiments, the double locking claw structure extends along a third direction, and the second regulating portion can slide the double locking claw structure along the third direction, where the third direction is parallel to the first wall and parallel to the extension direction of the fire duct.

[0026] According to the technical solution of this embodiment, the first restricting portion of the double-claw structure extends along the third direction, so that the double-claw structure has a certain length in the third direction. The second restricting portion of the fastener can slide the double-claw structure along the third direction. During the operation of the battery cell, the battery cell expands due to the internal chemical reaction. When the battery cell expands in the third direction, it causes a change in the position of the fastener located on the first wall, or causes a change in the position of the second restricting portion on the fastener. Because the second restricting portion can slide the double-claw structure along the third direction, even if the expansion of the battery cell causes a change in the position of the second restricting portion, the effect on the fire duct is relatively small or no, so that even if the battery cell expands, the stability of the installation of the battery in the fire duct is still relatively high.

[0027] In some possible embodiments, the first regulating portion extends along a third direction, and in the third direction, the extension length of the first regulating portion is the same as the extension length of the fire duct, where the third direction is parallel to the first wall and parallel to the extension direction of the fire duct.

[0028] The technical solution of this embodiment allows the fire duct to be easily attached to a plurality of fasteners with different positions by the first restricting part. As an example, in different types of battery cells, the size of the battery cell in the third direction may change, so the position of the fastener on the different types of battery cells may change accordingly. As another example, the fastener may be installed only on the first wall of some battery cells among the plurality of battery cells, and the position of the fastener on the plurality of battery cells may be adjusted and changed according to different application needs. In the above two cases, the technical solution of the embodiment of this application can still use the first restricting part on the fire duct to be fitted and attached with the fastener. In other words, the fixed installation of the fire duct is not affected by the change in the position of the fastener on the plurality of battery cells. The technical solution of this embodiment not only can improve the installation efficiency of the fire duct on the battery, but also can make the fire duct applicable to more application scenarios, and favor the popularization and use of the fire duct on various different types of batteries.

[0029] In some possible embodiments, the fire duct includes at least a pair of first regulating portions, each pair of the first regulating portions being located on either side of the fire duct in the second direction, and the fixing device includes at least a pair of second regulating portions, each pair of the second regulating portions being installed corresponding to each pair of the first regulating portions.

[0030] According to the technical solution of this embodiment, at least a pair of first regulating parts are installed on both sides of the fire duct in the second direction, and the at least a pair of first regulating parts are interfitted with the corresponding at least a pair of second regulating parts to realize relatively reliable and stable regulation and fixation of the fire duct in the second direction, thereby improving the installation stability of the fire duct in the battery.

[0031] In some possible embodiments, the fire duct includes a first pipe wall and a second pipe wall arranged opposite each other along a first direction, the first pipe wall being farther away from the battery cell than the second pipe wall, wherein a thickness of the first pipe wall is greater than a thickness of the second pipe wall, and / or the first pipe wall is provided with a reinforcement.

[0032] According to the technical solution of this embodiment, in the fire duct, 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 a reinforcing material is installed in the first pipe wall, so that the first pipe wall away from the battery cell can have a relatively high strength and can withstand the impact of external forces on the fire duct to a relatively large extent, thereby improving the reliability of the fire duct used in the battery.

[0033] In some possible embodiments, the size of the first tube wall is greater than the size of the second tube wall in the second direction.

[0034] According to the technical solution of this embodiment, in the fire duct, the size of the first pipe wall and the second pipe wall in the second direction is designed so that the strength of the first pipe wall is stronger than that of the second pipe wall, that is, the first pipe wall can have a relatively high strength, and can bear the impact of the fire duct caused by external force to a relatively large extent, and the reliability of the fire duct used in the battery can be improved. In addition, when the discharged matter inside the battery cell impacts the first pipe wall through the pressure relief mechanism, the whole of the second pipe wall may be attached to the first pipe wall, and when the first pipe wall and the second pipe wall are the same size, the second pipe wall and the first pipe wall attached to each other will block the flow path, thereby preventing the fire-fighting medium in the fire duct from flowing into the corresponding pressure relief mechanism and the inside of the battery cell, which will affect the fire-fighting effect of the fire duct. However, with the technical proposal of this embodiment, the size of the first pipe wall in the second direction is larger than the size of the second pipe wall in the second direction, so that even if the second pipe wall adheres to the first pipe wall, the flow path is not completely blocked, and the fire-fighting medium can flow into the corresponding pressure relief mechanism and the inside of the battery cell, thereby achieving good fire-fighting performance.

[0035] According to a second aspect there is provided an electrical power consuming device comprising a battery of the first aspect or any one of the possible embodiments of the first aspect, the battery being adapted to provide electrical energy to the electrical power consuming device.

[0036] According to a third aspect, a method for manufacturing a battery is provided, the method including providing a battery cell including a first wall, the first wall being provided with a pressure relief mechanism that is activated to release the internal pressure when an internal pressure or temperature of the battery cell reaches a threshold value; providing a fire duct for containing a fire-fighting medium and discharging the fire-fighting medium when the pressure relief mechanism is activated; providing a fastener installed between the first wall and the fire duct; and fixedly attaching the fire duct to the fastener, wherein the fire duct includes a first regulating portion and the fastener includes a second regulating portion, the first regulating portion and the second regulating portion engage with each other to regulate the fire duct 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 an extension direction of the fire duct.

[0037] According to a fourth aspect, a battery manufacturing apparatus is provided, the manufacturing apparatus comprising: providing a battery cell including a first wall, the first wall being provided with a pressure relief mechanism for activating to release internal pressure when an internal pressure or temperature of the battery cell reaches a threshold value; providing a fire duct for containing a fire-fighting medium and discharging the fire-fighting medium when the pressure relief mechanism is activated; a providing module used for providing a fastener installed between the first wall and the fire duct; and an attachment module for fixedly attaching the fire duct to the fastener, wherein the fire duct includes a first regulating portion and the fastener includes a second regulating portion, the first regulating portion and the second regulating portion engage with each other to regulate the fire duct 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 an extension direction of the fire duct.

[0038] According to the technical solution of the embodiment of the present application, a fire duct is installed on the battery, and when the pressure relief mechanism of the battery cell is operating, a fire-fighting medium can be discharged, and the temperature of the discharged material of the battery cell or the inside of the battery cell can be reduced, thereby improving the safety performance of the battery. In addition, a first restricting part is installed on the fire duct, and a fixing device is further installed on the battery, and a second restricting part is installed on the fixing device, and the first restricting part and the second restricting part are fitted together to restrict the fire duct in multiple directions, so that the fire duct is installed on the battery relatively stably, and can achieve relatively reliable fire fighting and temperature regulating effects, thereby enhancing the safety performance of the battery. [Brief description of the drawings]

[0039] In order to more clearly explain the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the embodiments of the present application. It is obvious that the drawings described below are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on the drawings without exerting creative efforts. [Figure 1] 1 is a structural schematic diagram of a vehicle disclosed in an embodiment of the present application. [Diagram 2] FIG. 1 is a structural schematic diagram of a battery disclosed in one embodiment of the present application. [Diagram 3] FIG. 2 is a structural schematic diagram of a battery cell disclosed in an embodiment of the present application. [Figure 4] 1 is a cross-sectional exploded schematic view of a battery disclosed in one embodiment of the present application. [Diagram 5] FIG. 2 is another cross-sectional exploded schematic view of a battery disclosed in one embodiment of the present application. [Figure 6] FIG. 6 is a local enlarged schematic view of part A in FIG. 5. [Figure 7] FIG. 2 is a local enlarged exploded schematic view of a battery disclosed in one embodiment of the present application. [Figure 8] FIG. 2 is a partially enlarged schematic diagram of a battery disclosed in one embodiment of the present application. [Figure 9] 1 is a perspective exploded schematic view of a battery disclosed in one embodiment of the present application; [Figure 10] FIG. 2 is another cross-sectional exploded schematic view of a battery disclosed in one embodiment of the present application. [Figure 11] 11 is a local enlarged schematic view of part B in FIG. 10. FIG. [Figure 12] FIG. 2 is another local enlarged exploded schematic view of a battery disclosed in one embodiment of the present application. [Figure 13] FIG. 2 is another enlarged schematic diagram of a battery disclosed in an embodiment of the present application. [Figure 14] FIG. 2 is another perspective exploded schematic view of a battery disclosed in one embodiment of the present application. [Figure 15] FIG. 2 is another perspective exploded schematic view of a battery disclosed in one embodiment of the present application. [Figure 16] FIG. 1 is a structural schematic diagram of a fire duct disclosed in one embodiment of the present application. [Figure 17] FIG. 2 is another structural schematic diagram of the fire duct disclosed in an embodiment of the present application. [Figure 18] FIG. 2 is another structural schematic diagram of the fire duct disclosed in an embodiment of the present application. [Figure 19] 1 is a flowchart of a method for manufacturing a battery disclosed in one embodiment of the present application. [Figure 20] 1 is a schematic block diagram of a battery manufacturing apparatus disclosed in one embodiment of the present application.

[0040] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0041] The following describes the embodiments of the present application in more detail in conjunction with the drawings and examples. The detailed description of the embodiments and the drawings are for illustrative purposes only to explain the principles of the present application, but are not intended to limit the scope of the present application, i.e., the present application is not limited to the described embodiments.

[0042] In the description of this application, it should be explained that unless otherwise specified, the meaning of "plurality" is two or more, and the orientation or positional relationship indicated by the terms "up", "down", "left", "right", "inside", "outside", etc. is merely for convenience and simplification of the description of this application, and does not indicate or imply that the device or element referred to has a particular orientation and must be configured and operated in a particular orientation, and should not be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance. "Perpendicular" is not strictly perpendicular, but has a margin of error. "Parallel" is not strictly parallel, but has a margin of error.

[0043] All directional terms appearing in the following description are directions shown in the drawings, and do not limit the specific structure of the present application. In the description of the present application, it should be further explained that unless otherwise clearly specified or limited, the terms "attached", "connected" and "connected" should be understood in a broad sense, for example, may be fixedly connected, detachably connected, or integrally connected, may be directly connected, or may be indirectly connected through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0044] The term "and / or" in this application merely describes the relationship between related objects and indicates that three relationships may exist, for example, A and / or B may represent three cases: A, a combination of A and B, and B. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "or" relationship.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the art in the technical field of this application, and the terms used in the specification of this application are only for describing specific embodiments and are not intended to limit this application, and the terms "comprises" and "has" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive "comprises". The terms "first", "second", etc. in the specification and claims of this application or the above drawings are not intended to describe a specific order or subordinate relationship, but are intended to distinguish different objects.

[0046] An "embodiment" referred to in this application means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to all the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly or implicitly, that the embodiments described in this application can be combined with other embodiments.

[0047] In this application, a battery is a physical module that includes one or more battery cells to provide electrical energy. For example, the battery referred to in this application may include a battery module, a battery pack, etc. The battery generally includes a housing for packaging one or more battery cells. The housing can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.

[0048] Alternatively, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, or a magnesium ion battery, etc., and the embodiments of the present application are not limited thereto. The battery cell may have a cylindrical, flat, rectangular, or other shape, etc., and the embodiments of the present application are not limited thereto. Battery cells are generally divided into three types, namely, cylindrical battery cells, rectangular parallelepiped battery cells, and pouch battery cells, according to the packaging method, and the embodiments of the present application are not limited thereto.

[0049] The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode plate, a negative electrode plate, and a separator. The battery cell is mainly operated by the movement of metal ions between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode collector, and the collector on which the positive electrode active material layer is not coated protrudes from the collector on which the positive electrode active material layer is coated, and the collector on which the positive electrode active material layer is not coated is called a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode plate includes a negative electrode collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode collector, the collector on which the negative electrode active material layer is not coated protrudes from the collector on which the negative electrode active material layer is coated, and the collector on which the negative electrode active material layer is not coated is called a negative electrode tab. The material of the negative electrode collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that the electrode assembly does not melt even when a large current flows, the number of positive electrode tabs is multiple and stacked, and the number of negative electrode tabs is multiple and stacked. The material of the separator may be polypropylene (PP) or polyethylene (PE), etc. In addition, the electrode assembly may be a wound type structure or a stacked type structure, and the embodiment of the present application is not limited thereto.

[0050] The development of battery technology requires simultaneous consideration of a wide range of design factors, such as performance parameters such as energy density, cycle life, discharge capacity, and charge / discharge ratio, as well as battery safety.

[0051] For batteries, the main safety hazard comes from the charging and discharging process, and in order to improve the safety performance of the battery, a pressure relief mechanism is generally installed in the battery cell. The pressure relief mechanism is an element or member that operates to release the internal pressure or temperature when the internal pressure or temperature of the battery cell reaches a predetermined threshold. The predetermined threshold may be adjusted according to different design needs. The predetermined threshold may depend on one or more materials of the positive electrode plate, the negative electrode plate, the electrolyte, and the separator in the battery cell. The pressure relief mechanism can adopt, for example, an element or member that is sensitive to pressure or temperature, that is, when the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure relief mechanism operates to form a channel for releasing the internal pressure or temperature.

[0052] The term "operation" referred to in this application refers to the operation of the pressure relief mechanism to release the internal pressure and temperature of the battery cell. The operation of the pressure relief mechanism may include, but is not limited to, at least a part of the pressure relief mechanism being ruptured, torn, or melted. After the pressure relief mechanism is operated, the high temperature and high pressure material inside the battery cell is discharged from the pressure relief mechanism as a discharge. In this manner, the battery cell can be released when the pressure or temperature is controllable, thereby avoiding the occurrence of a potential more serious accident.

[0053] Exhaust from battery cells referred to in this application includes, but is not limited to, electrolyte, melted or split positive and negative plates, separator fragments, high temperature and pressure gases generated by reactions, flames, etc.

[0054] The pressure relief mechanism on the battery cell has an important impact on the safety of the battery. For example, if a short circuit or overcharging occurs in the battery cell, the pressure or temperature inside the battery cell may rise suddenly due to thermal runaway. In such a case, the pressure relief mechanism operates to release the internal pressure and temperature to the outside, preventing the battery cell from exploding or catching fire.

[0055] In addition to providing a pressure relief mechanism in the battery cell to ensure the safety of the battery, the housing for accommodating the battery cell may further include a fire duct, which may accommodate 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 duct may be provided corresponding to the pressure relief mechanism in the battery cell. When the pressure relief mechanism is activated, the discharge from the battery cell breaks the wall of the fire fighting duct, and the fire fighting medium flows out of the fire fighting duct. The fire fighting medium cools the high-temperature discharge from the battery cell, reducing the danger of the discharge, thereby improving the safety performance of the battery cell and the entire battery.

[0056] In some related technologies, a bracket is used to mount the fire duct on the wall where the pressure relief mechanism of the battery cell is located. For example, a bracket is installed on the wall where the pressure relief mechanism of the battery cell is located, and the fire duct is installed on the bracket and installed corresponding to the pressure relief mechanism. The bracket only has a simple regulating structure, such as a groove, and has a relatively limited fixing effect on the fire duct. Therefore, in this technical solution, the stability of the installation of the fire duct on the battery is poor. When the power consumption device (such as an electric vehicle) where the battery is located is in a moving state, it will have a certain impact on the fire duct on the battery, and if the installation stability of the fire duct is poor, the fire duct will vibrate or fall off the battery cell, which will further affect the normal use of the fire duct and bring about safety concerns for the battery.

[0057] In view of this, the present application provides a battery, in which a first regulating portion is installed in a fire duct of the battery, and the battery further includes a fixing device, in which the second regulating portion of the fixing device and the first regulating portion on the fire duct are fitted together to realize regulating and fixing the fire duct in multiple ways, thereby improving the installation stability of the fire duct in the battery, and thereby improving the safety performance of the battery.

[0058] The technical solutions described in the embodiments of the present application are applicable to various devices that use batteries, such as mobile phones, portable devices, laptops, battery-powered vehicles, electric toys, electric tools, electric vehicles, ships, and spacecraft, including, for example, airplanes, rockets, space shuttles, and spaceships.

[0059] It should be understood that the technical solutions described in the embodiments of the present application are not only applicable to the devices described above, but also to all battery-based devices. For the sake of brevity, however, the following embodiments will be described using an electric vehicle as an example.

[0060] For example, as shown in FIG. 1, a structural schematic diagram of a vehicle 1 in one embodiment of the present application, the vehicle 1 may be a fuel oil vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle, etc. A motor 11, a controller 12, and a battery 10 may be installed inside the vehicle 1, and the controller 12 is used to control the battery 10 to power the motor 11. For example, the battery 10 may be installed at the bottom, front, or rear of the vehicle 1. The battery 10 may be used to power the vehicle 1, for example, the battery 10 may be used as an operating power source for the vehicle 1, and for the circuit system of the vehicle 1, for example, for the start-up, navigation, and operating power consumption needs during operation of the vehicle 1. In another embodiment of the present application, the battery 10 may be used not only as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, to provide driving power to the vehicle 1 instead of fuel oil or natural gas, or instead of a part thereof.

[0061] In order to meet different power usage demands, a battery may include multiple battery cells, where the multiple battery cells may be connected in series, parallel, or series-parallel, and the series-parallel connection is a mixture of the series and parallel connections. The battery may be called a battery pack. Alternatively, multiple battery cells may be connected in series, parallel, or series-parallel to form a battery module, and then multiple battery modules may be connected in series, parallel, or series-parallel to form a battery. That is, multiple battery cells may directly form a battery, or a battery module may be formed, and then the battery module may form a battery.

[0062] For example, as shown in FIG. 2, FIG. 2 is a structural schematic diagram of a battery 10 according to one embodiment of the present application, and the battery 10 may include a plurality of battery cells 20. The battery 10 may further include a housing 100 (or called a cover body), and the inside of the housing 100 is a hollow structure, and the plurality of battery cells 20 are accommodated in the housing 100. As shown in FIG. 2, the housing 100 may include two parts, which are respectively called a first part 111 and a second part 112, and the first part 111 and the second part 112 are engaged with each other. The shapes of the first part 111 and the second part 112 may be determined according to the combined shape of the plurality of battery cells 20, and both the first part 111 and the second part 112 may have an opening. For example, the first part 111 and the second part 112 may both be hollow rectangular parallelepipeds, each with only one open surface, with the opening of the first part 111 and the opening of the second part 112 disposed opposite each other, and the first part 111 and the second part 112 engaged with each other to form the housing 100 having a sealed chamber. A plurality of battery cells 20 are combined by being connected in parallel, in series, or in series-parallel, and then placed in the housing 100 formed after the first part 111 and the second part 112 are engaged with each other.

[0063] Optionally, the battery 10 may further include other structures, which will not be described further here. For example, the battery 10 may further include a busbar member for realizing an electrical connection between the multiple battery cells 20, such as a parallel connection, a series connection, or a series-parallel connection. Specifically, the busbar member may realize an electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20. Furthermore, the busbar member may be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 may further be drawn through the housing by a conductive mechanism. Optionally, the conductive mechanism may belong to the busbar member.

[0064] According to different power demands, the number of the battery cells 20 may be set to any value. The multiple battery cells 20 may be connected in series, parallel, or series-parallel manner to achieve a relatively large capacity or power. Since the number of the battery cells 20 included in each battery 10 may be relatively large, the battery cells 20 may be installed in groups for ease of installation, and each group of the battery cells 20 may constitute a battery module. The number of the battery cells 20 included in the battery module is not limited and may be installed according to demand.

[0065] FIG. 3 shows a structural schematic diagram of a battery cell 20 according to one embodiment of the present application.

[0066] As shown in FIG. 3 , the battery cell 20 includes one or more electrode assemblies 22, a case 211, and a cover plate 212. The walls of the case 211 and the cover plate 212 are both referred to as the walls of the battery cell 20. The case 211 is determined according to the shape after assembling one or more electrode assemblies 22, for example, the case 211 may be a hollow rectangular parallelepiped or straight parallelepiped or cylinder, and one of the faces of the case 211 has an opening so that one or more electrode assemblies 22 can be easily placed in the case 211. For example, when the case 211 is a hollow rectangular parallelepiped or straight parallelepiped, one of the planes of the case 211 is an opening plane, that is, the plane communicates the inside and outside of the case 211 without having a wall. When the case 211 may be a hollow cylinder, the end face of the case 211 is an opening plane, that is, the end face communicates the inside and outside of the case 211 without having a wall. A cover plate 212 covers the opening and is connected to the case 211 to form a sealed cavity in which the electrode assembly 22 is placed. The case 211 is filled with an electrolyte, for example an electrolyte solution.

[0067] The battery cell 20 may further include two electrode terminals 214, which may be installed on the cover plate 212. The cover plate 212 has a generally flat plate shape, and the two electrode terminals 214 are fixed to the flat surface of the cover plate 212, and the two electrode terminals 214 are respectively a positive electrode terminal 214a and a negative electrode terminal 214b. Each electrode terminal 214 is installed corresponding to a connection part 23, which may also be called a current collecting part 23, and is located between the cover plate 212 and the electrode assembly 22 to realize an electrical connection between the electrode assembly 22 and the electrode terminals 214.

[0068] As shown in FIG. 3, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarities of the first tab 221a and the second tab 222a are opposite. 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 one electrode terminal by one connection part 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal by another connection part 23. For example, the positive electrode terminal 214a is connected to the positive electrode tab by one connection part 23, and the negative electrode terminal 214b is connected to the negative electrode tab by another connection part 23.

[0069] In this battery cell 20, the electrode assembly 22 may be configured as one or more according to actual usage needs. As shown in FIG. 3, four independent electrode assemblies 22 are installed in the battery cell 20.

[0070] For example, a pressure relief mechanism 213 may be installed on one wall of the battery cell 20. The pressure relief mechanism 213 is used to operate and release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0071] Optionally, in another embodiment of the present application, the pressure relief mechanism 213 and the electrode terminal 214 are installed on the same wall of the battery cell 20. For example, as shown in FIG. 3, the electrode terminal 214 and the pressure relief mechanism 213 may both be installed on the top wall of the battery cell 20, i.e., the cover plate 212.

[0072] By installing the pressure relief mechanism 213 and the electrode terminal 214 on the same wall of the battery cell 20, for example, on the cover plate 212 of the battery cell 20, it is possible to facilitate processing and installation of the pressure relief mechanism 213 and the electrode terminal 214, which can be advantageous in improving the production efficiency of the battery 10.

[0073] Optionally, in one embodiment of the present application, the pressure relief mechanism 213 and the electrode terminal 214 are installed on different walls of the battery cell 20. For example, the electrode terminal 214 of the battery cell 20 may be installed on the top wall of the battery cell 20, i.e., the cover plate 212. The pressure relief mechanism 213 is installed on another wall of the battery cell 20 different from the top wall, for example, the pressure relief mechanism 213 is installed on a bottom wall opposite to the top wall.

[0074] The pressure relief mechanism 213 may be a part of the wall where it is located, or may be a separate structure from the wall where it is located, and may be fixed to the wall where it is located by, for example, welding. For example, in the embodiment shown in FIG. 3, when the pressure relief mechanism 213 is a part of the bottom wall, the pressure relief mechanism 213 may be formed by installing a notch in the bottom wall, and the bottom wall thickness corresponding to the notch is smaller than the thickness of the area of ​​the pressure relief mechanism 213 other than the notch. The notch is the weakest point of the pressure relief mechanism 213. When the gas generated from the battery cell 20 is too much and the internal pressure of the case 211 rises and reaches a threshold value, or when the internal temperature of the battery cell 20 rises and reaches a threshold value due to the heat generated by the reaction inside the battery cell 20, the pressure relief mechanism 213 bursts at the notch to communicate the inside and outside of the case 211, and the gas pressure and temperature are released to the outside by the bursting of the pressure relief mechanism 213, thereby avoiding the explosion of the battery cell 20.

[0075] In addition, the pressure relief mechanism 213 may be various possible pressure relief mechanisms, and the embodiments of the present application are not limited thereto. For example, the pressure relief mechanism 213 may be a temperature-sensitive pressure relief mechanism configured to be meltable when the internal temperature of the battery cell 20 in which the pressure relief mechanism 213 is provided reaches a threshold value, and / or the pressure relief mechanism 213 may be a pressure-sensitive pressure relief mechanism configured to be ruptured when the internal air pressure of the battery cell 20 in which the pressure relief mechanism 213 is provided reaches a threshold value.

[0076] FIG. 4 illustrates a cross-sectional exploded schematic view of a battery 10 according to one embodiment of the present application.

[0077] As shown in FIG. 4, the battery 10 includes a battery cell 20 including a first wall 201, the first wall 201 includes a battery cell 20 having a pressure relief mechanism 213 that is activated to release the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value; a fire duct 30 for accommodating a fire-fighting medium and discharging the fire-fighting medium when the pressure relief mechanism 213 is activated; and a fastener 40 that is installed between the first wall 201 and the fire duct 30 and for fixing the fire duct 30, where the fire duct 30 includes a first regulating portion 310 and the fastener 40 includes a second regulating portion 410, the first regulating portion 310 and the second regulating portion 410 engage with each other to regulate the fire duct 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 duct 30.

[0078] Specifically, in the embodiment of the present application, the first wall 201 of the battery cell 20 may be the cover plate 212 in the embodiment shown in Fig. 3, or may be any wall of the case 211. Optionally, the first wall 201 is not the wall with the largest area in the battery cell 20, and the wall with the largest area in the battery cell 20 may be attached to another battery cell 20 or the housing 100, and may be used to improve the stability of the attachment of the battery cell 20 to the housing.

[0079] A pressure relief mechanism 213 is installed on the first wall 201, and as mentioned above, the pressure relief mechanism 213 may be a part of the first wall 201 or a structure separate from the first wall 201. The pressure relief mechanism 213 may be a temperature-sensitive pressure relief mechanism, a pressure-sensitive pressure relief mechanism or other types of pressure relief mechanism. For the relevant technical solutions of the pressure relief mechanism 213, please refer to the relevant descriptions in the above embodiments, and no further description will be given here.

[0080] For example, in the embodiment of the present application, the pressure relief mechanism 213 and the electrode terminal 214 may both be installed on the first wall 201, which can facilitate the processing and installation of the pressure relief mechanism 213 and the electrode terminal 214 and advantageously improve the production efficiency of the battery 10. Of course, in other alternative embodiments, the pressure relief mechanism 213 and the electrode terminal 214 may be located on different walls of the battery cell 20.

[0081] Continuing to refer to FIG. 4, in the embodiment of the present application, the fire duct 30 is installed corresponding to the first wall 201. Optionally, the fire duct 30 and the pressure relief mechanism 213 on the first wall 201 are installed correspondingly. The fire duct 30 contains a fire fighting medium, and when the pressure relief mechanism 213 is activated to release high-temperature exhaust from the inside of the battery cell 20, the fire duct 30 discharges the fire fighting medium to lower the temperature of the high-temperature exhaust, and can prevent the high-temperature exhaust from affecting the battery 10 and causing safety concerns. Furthermore, when the fire duct 30 and the pressure relief mechanism 213 are installed correspondingly, the fire fighting medium discharged through the fire duct 30 flows into the inside of the battery cell 20 by the pressure relief mechanism 213 after activation, lowering the temperature of the inside of the battery cell 20, and can prevent the high temperature of the battery cell 20 from being transmitted to other battery cells 20 and affecting other battery cells 20.

[0082] Optionally, the fire fighting medium in the fire fighting duct 30 may be a cooling medium, which has a relatively low temperature and can achieve a better cooling effect when the pressure relief mechanism 213 is working, and can also achieve the effect of cooling the battery cells 20 when the pressure relief mechanism 213 is not working, so as to prevent the temperature of the battery cells 20 from being too high and easily causing safety problems. Optionally, the fire fighting medium may be a fire fighting gas, a fire fighting liquid, or a fire fighting solid. In some embodiments, the fire fighting medium may be circulated to achieve a better cooling effect. By way of example and not limitation, in the embodiments of the present application, the fire fighting medium may be water, a mixture of water and ethylene glycol, or air, etc.

[0083] As shown in FIG. 4, for illustrative purposes and not for limitation, the main body of the fire duct 30 may be a duct with a circular cross section. In addition to the main body, the fire duct 30 may further include a first restricting portion 310, which is connected to the main body of the fire duct 30. Optionally, the first restricting portion 310 may be an integrally molded structure with the main body of the fire duct 30, or the first restricting portion 310 may be a separate structure from the main body of the fire duct 30, for example, the first restricting portion 310 may be fixed to the main body of the fire duct 30 by a mechanical connection method such as welding. The first restricting portion 310 is used to fit the fastener 40 between the fire duct 30 and the first wall 201 of the battery cell 20, and realize the fixation of the fire duct 30 at the first wall 201 of the battery cell 20.

[0084] Specifically, continuing to refer to FIG. 4, the fixing device 40 includes a second regulating portion 410, and the first regulating portion 310 in the fire duct 30 and the second regulating portion 410 are fitted together to regulate the fire duct 30 in a first direction x and a second direction y, where 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 duct 30.

[0085] Alternatively, in some embodiments, the fastener 40 may include only the second regulating portion 410, and the second regulating portion 410 may be fixedly attached to the first wall 201 of the battery cell 20 by a mechanical connection method such as welding.

[0086] Alternatively, in some other embodiments, the fastener 40 may include the second restricting portion 410 and may further include other structural materials to facilitate attachment of the fastener 40 and the second restricting portion 410 to the first wall 201. For example, as shown in Fig. 4, in addition to the second restricting portion 410, the fastener 40 may include an attachment portion, and the second restricting portion 410 is installed on the attachment portion, and by attaching the attachment portion to the first wall 201, it is possible to realize stable attachment of the second restricting portion 410 to the first wall 201.

[0087] The mutual fitting connection of the first restricting portion 310 and the second restricting portion 410 is illustrative and not restrictive. In the embodiment shown in FIG. 4, in the second direction y, the first restricting portion 310 is installed on both sides of the fire duct 30, and in the first direction x, the second restricting portion 410 protrudes toward the fire duct 30 and is installed corresponding to the first restricting portion 310. When the first restricting portion 310 and the second restricting portion 410 are fitted together, the first restricting portion 310 and the second restricting portion 410 abut against each other in the first direction x and the second direction y, and can realize the restriction on the fire duct 30 in the first direction x and the second direction y.

[0088] Optionally, the first and second restricting parts 310 and 410 may be configured as a mechanical structure of mutual fitting as shown in Fig. 4, or may be configured as a mechanical structure of a related manner such as a locking groove, a shaft hole insertion, a concave-convex fitting, etc., to realize the restriction of the fire duct 30 in the first direction x and the second direction y. The embodiments of the present application are not limited to the specific structure of the first and second restricting parts 310 and 410 and the specific manner of mutual fitting, but only need to realize the restriction of the fire duct 30 in the first direction x and the second direction y.

[0089] According to the technical solution of the embodiment of the present application, a fire duct 30 is installed on the battery 10, so that when the pressure relief mechanism 213 of the battery cell 20 is operating, a fire-fighting medium can be discharged, and the temperature of the discharged material of the battery cell 20 or the inside of the battery cell 20 can be reduced, thereby improving the safety performance of the battery 10. In addition, a first restricting part 310 is installed on the fire duct 30, and a fixing device 40 is further installed on the battery 10, and a second restricting part 410 is installed on the fixing device 40, and the first restricting part 310 and the second restricting part 410 are fitted together to restrict the fire duct 30 in multiple directions, so that the fire duct 30 is installed relatively stably on the battery 10 and can achieve relatively reliable fire fighting and temperature regulating effects, thereby enhancing the safety performance of the battery 10.

[0090] FIG. 5 shows another cross-sectional exploded schematic view of a battery 10 according to an embodiment of the present application, and FIG. 6 shows a local enlarged schematic view of part A in FIG.

[0091] Combining Figures 5 and 6, in an embodiment of the present application, the first regulating portion 310 on the fire duct 30 is a single locking claw structure, and this single locking claw structure includes a connection portion 311 and a first locking claw portion 312, this connection portion 311 is formed by the pipe wall of the fire duct 30 extending along the second direction y, the first locking claw portion 312 is connected to this connection portion 311 and extends toward the battery cell 20, and the first locking claw portion 312 is engaged with the second regulating portion 410.

[0092] According to the technical proposals of the embodiments of the present application, the first regulating part 310 on the fire duct 30 is designed into a single locking claw structure, and the first regulating part 310 on the fire duct 30 can be locked with the second regulating part 410 on the fastener 40. This ensures the stability of the connection between the first regulating part 310 and the second regulating part 410, while at the same time making it relatively easy to install the single locking claw structure on the fire duct 30, and relatively improving the production efficiency of the fire duct 30.

[0093] Optionally, as shown in FIG. 6 , a first regulating portion 310 is installed on both sides of the fire duct 30 in the second direction y, that is, a single locking claw structure is installed on both sides of the fire duct 30 in the second direction y, and the single locking claw structure on both sides of the fire duct 30 is used to lock onto the second regulating portion 410, thereby further improving the stability of the installation of the fire duct 30 in the battery 10.

[0094] Optionally, in the first restricting portion 310 of this single locking claw structure, the connecting portion 311 may be connected to the end of the fire duct 30 that is remote from the battery cell 20. For example, as shown in Fig. 6, the cross section of the fire duct 30 may be a track shape, and the wall of the fire duct 30 that is remote from the battery cell 20 may be a flat plate-like structure parallel to the second direction y, and this wall may be called the first wall of the fire duct, and the connecting portion 311 may be an extension of this first wall in the second direction y. According to this embodiment, the thickness space in the first direction x of the fire duct 30 can be utilized to install a first locking claw portion 312 that is connected to the connection portion 311 and extends toward the battery cell 20. Correspondingly, the second regulating portion 410 that is locked to the first locking claw portion 312 is installed in the thickness space in the first direction x of the fire duct 30, thereby saving the installation space of the fire duct 30 at the battery cell 20 and favoring a reduction in the overall volume of the battery 10, thereby improving the energy density of the battery 10.

[0095] As shown in FIG. 6, by way of example and not limitation, the first locking claw portion 312 is a first two The second restricting portion 410 may include a protrusion of the first one The first and second protrusions may include a protrusion, and the first and second protrusions may be fitted together to realize mutual engagement between the first locking claw portion 312 and the second restricting portion 410.

[0096] Alternatively, in other embodiments, the first locking claw portion 312 and the second restriction portion 410 may be locked to each other in other ways. Fig. 7 shows a local enlarged exploded schematic view of a battery 10 according to another embodiment of the present application.

[0097] As shown in FIG. 7, in the embodiment of the present application, the second regulating portion 410 is a locking groove structure, which includes a first locking groove wall 411 and a second locking groove wall 412 aligned along the second direction y, and the first locking groove wall 411 and the second locking groove wall 412 are used to clamp the first locking claw portion 312 and regulate the fire duct 30 in the first direction x and the second direction y.

[0098] Specifically, in the embodiment of the present application, the second regulating portion 410 is a locking groove structure that is fitted into the first locking claw portion 312, and the first locking groove wall 411 and the second locking groove wall 412 in this locking groove structure clamp the first locking claw portion 312, thereby improving the locking strength between the first regulating portion 310 and the second regulating portion 410, thereby improving the regulating and fixing effect on the fire duct 30 in the first direction x and the second direction y, and improving the stability of the installation of the fire duct 30 in the battery 10.

[0099] Alternatively, in order for the first locking groove wall 411 and the second locking groove wall 412 to have a good clamping effect on the first locking claw portion 312, the distance between the first locking groove wall 411 and the second locking groove wall 412 in the second direction y is adapted to the size of the first locking claw portion 312 in the second direction y, for example, the distance between the first locking groove wall 411 and the second locking groove wall 412 in the second direction y is equal to or close to the size of the first locking claw portion 312 in the second direction y. Also, the sizes of the first locking groove wall 411, the second locking groove wall 412 and the first locking claw portion 312 in the first direction x may be the same or close to each other.

[0100] Alternatively, in some embodiments of the examples of the present application, the first locking groove wall 411, the second locking groove wall 412 and the first locking claw portion 312 may all be plate-shaped structures. When the locking groove structure formed by the first locking groove wall 411 and the second locking groove wall 412 can firmly clamp the first locking claw portion 312, the second regulating portion 410 of the locking groove structure can not only directly perform a relatively reliable and stable regulating and fixing action on the first locking claw portion 312 in the second direction y, but also perform a certain degree of regulating and fixing action on the first locking claw portion 312 in the first direction x by friction force.

[0101] Alternatively, in some other embodiments of the examples of the present application, in order to further improve the locking strength of the second regulating portion 410 and the first locking claw portion 312 in the first direction x and improve the regulating and fixing effect of the fire duct 30 in the first direction x, in the second regulating portion 410 of the locking groove structure, a first protrusion 4101 is provided at the end of the first locking groove wall 411 and / or the second locking groove wall 412 away from the battery cell 20, and a second protrusion 3121 is provided at the end of the first locking claw portion 312 close to the battery cell 20, and the first protrusion 4101 and the second protrusion 3121 are fitted together to regulate the fire duct 30 in the first direction x.

[0102] As shown in FIG. 7, which is illustrative and not limiting, a first protrusion 4101 is provided on the second locking groove wall 412, and the first protrusion 4101 and the second protrusion 3121 on the first locking claw portion 312 respectively protrude toward two opposite directions in the second direction y. After the first locking claw portion 312 is attached between the first locking groove wall 411 and the second locking groove wall 412, the first protrusion 4101 and the second protrusion 3121 are arranged opposite each other in the first direction x, so that the first protrusion 4101 and the second protrusion 3121 can be fitted into and locked with each other. In addition, the first protrusion 4101 is positioned at the end of the second locking groove wall 412 away from the battery cell 20, and the second protrusion 3121 is positioned at the end of the first locking claw portion 312 closer to the battery cell 20. After the second locking groove wall 412 and the first locking claw portion 312 are locked to each other, the second protrusion 3121 is positioned toward the battery cell 20 relative to the first protrusion 4101, and this first protrusion 4101 can prevent the second protrusion 3121 and the first locking claw portion 312 on which it is located from moving away from the battery cell 20.

[0103] It can be understood that, when the first protrusion 4101 is installed on the first locking groove wall 411, the first protrusion 4101 on the first locking groove wall 411 and the second protrusion 3121 on the first locking claw portion 312 may protrude in two opposite directions in the second direction y, respectively. In addition to the protruding directions of the first protrusion 4101 and the second protrusion 3121 being opposite to those shown in Fig. 7, other related technical solutions may be referred to the above related descriptions, and will not be further described herein.

[0104] It should also be noted that in the embodiment of the present application, after the first locking claw portion 312 is attached between the first locking groove wall 411 and the second locking groove wall 412, the relative positions of the first protrusion 4101 and the second protrusion 3121 may be designed such that the second protrusion 3121 faces the battery cell 20 relative to the first protrusion 4101. Therefore, the first protrusion 4101 may be disposed at an end of the first locking groove wall 411 and / or the second locking groove wall 412 that is far from the battery cell 20, or may be disposed at another position of the first locking groove wall 411 and / or the second locking groove wall 412. The second protrusion 3121 may be disposed at an end of the first locking claw portion 312 that is close to the battery cell 20, or may be disposed at another position of the first locking claw portion 312. The embodiment of the present application is not limited to the specific positions of the first protrusion 4101 and the second protrusion 3121.

[0105] Alternatively, in the embodiment shown in FIG. 7, the first protrusion 4101 and the second protrusion 3121 are both block-shaped protrusions, and of course, in other embodiments, the first protrusion 4101 and the second protrusion 3121 may be protrusions of other shapes, and the examples of the present application are not specifically limited to the shapes of the first protrusion 4101 and the second protrusion 3121.

[0106] In another embodiment of the present application, the first locking claw 312 two The protrusion 3121 may have a first inclined surface 3122 at the end away from the battery cell 20, and the first inclined surface 3122 on the first locking groove wall 411 and / or the second locking groove wall 412 may be provided with a first inclined surface 3122. oneA second inclined surface 4102 is provided at the end of the protrusion 4101 close to the battery cell 20, and the first inclined surface 3122 and the second inclined surface 4102 correspond to each other and are each inclined in a plane perpendicular to the first wall 201.

[0107] Based on the embodiment shown in FIG. 7, FIG. 8 shows a locally enlarged schematic view of a battery 10 according to one embodiment of the present application, where FIG. 8(a) is a locally enlarged exploded schematic view, and FIG. 8(b) is a locally enlarged assembled schematic view.

[0108] As shown in FIG. 8, the first locking groove wall 412 one A second inclined surface 4102 is provided on the end of the protrusion 4101 that is closer to the battery cell 20, and the second inclined surface 4102 is provided on the first locking claw portion 312. two A first inclined surface 3122 is provided on an end of the protrusion 3121 that is away from the battery cell 20. In the process of mounting the first locking claw portion 312 to the first locking groove wall 411 and the second locking groove wall 412, the first inclined surface 3122 and the second inclined surface 4102 are disposed opposite to each other and can be slidably attached to each other, and the first locking claw portion 312 slides into contact with the second inclined surface 4102 of the second locking groove wall 412 via its first inclined surface 3122, thereby facilitating the mounting of the first locking claw portion 312 between the first locking groove wall 411 and the second locking groove wall 412.

[0109] Optionally, the first inclined surface 4102 and the second inclined surface 3122 may be parallel to each other to optimize the sliding fit between the first locking groove wall 411 and the second locking groove wall 412 of the first locking claw portion 312.

[0110] According to the technical solution of the embodiment of the present application, the first locking claw portion 312 is provided with a first locking claw portion 312. two The first locking groove wall 411 and / or the second locking groove wall 412 are provided with a protrusion 3121. two The projection 3121 and the second projection 3122 engage with each other. one When the projection 4101 is installed, two The protrusion 3121 and the oneThe protrusions 4101 may be provided with inclined surfaces that fit together with each other, which can ensure that the first locking claw portion 312 and the first locking groove wall 411 and the second locking groove wall 412 can have a relatively good locking effect, and at the same time, further improve the installation efficiency between the first locking claw portion 312 and the first locking groove wall 411 and the second locking groove wall 412, thereby ensuring the stability of the installation of the fire duct 30 in the battery 10 and at the same time improving the installation efficiency of the fire duct 30 in the battery 10.

[0111] Based on the embodiment shown in FIG. 8, FIG. 9 shows a perspective exploded schematic view of a battery 10 according to one embodiment of the present application.

[0112] As shown in FIG. 9 , in an embodiment of the present application, the second regulating portion 410 is a locking groove structure, which extends along a third direction z, and the first locking claw portion 312 of the first regulating portion 310 can slide along the locking groove structure along the third direction z, where 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 duct 30.

[0113] Specifically, in the second regulating portion 410 of the locking groove structure, the first locking groove wall 411 and the second locking groove wall 412 extend along the third direction z and can have a certain length in the third direction z, so that the first locking claw portion 312 in the fire duct 30 can slide between the first locking groove wall 411 and the second locking groove wall 412 along the third direction z.

[0114] During operation of the battery cell 20, the gas inside the battery cell 20 expands due to the internal chemical reaction, and the battery cell 20 also expands accordingly. When the battery cell 20 expands in the third direction z, it causes a change in position of the fastener 40 located on the first wall 201, or causes a change in position of the second restricting portion 410 on the fastener 40. Since the first locking claw portion 312 of the fire duct 30 can slide the second restricting portion 410 of the locking groove structure along the third direction z, even if the expansion of the battery cell 20 causes a change in position of the second restricting portion 410, the effect on the fire duct 30 is relatively small or there is no effect, so even if the battery cell 20 expands, the stability of the attachment of the battery 10 to the fire duct 30 is still relatively high.

[0115] Optionally, as shown in FIG. 9, the fixture 40 on the battery cell 20 may include a plurality of second restricting portions 410. Specifically, in the second direction y, the second restricting portions 410 may be installed at positions of the fixture 40 corresponding to both sides of the fire duct 30, and in the third direction z, a plurality of second restricting portions 410 may be installed at positions of the fixture 40 corresponding to the same side of the fire duct 30, to further reinforce the restricting and fixing action on the fire duct 30. Optionally, in the third direction z, two second restricting portions 410 may be installed on both sides of the pressure relief mechanism 213 of the battery cell 20, and the fixture 40 leaves an opening between the two second restricting portions 410 so that the pressure relief mechanism 213 can release the pressure inside the battery cell 20.

[0116] As can be understood, Fig. 9 is a schematic diagram showing the number and position of the second restricting portion 410 on the fixture 40 in the embodiment of the present application, and is not limited thereto. The fixture 40 has an opening corresponding to the pressure release mechanism 213, and the fire duct 30 is installed corresponding to the pressure release mechanism 213 and the opening. Therefore, in the embodiment of the present application, the second restricting portion 410 can be installed at any position other than the opening on the fixture 40 that can be fitted into the first restricting portion 310 of the fire duct 30, and the embodiment of the present application does not specifically limit the number and position of the second restricting portion 410 on the fixture 40.

[0117] 9, annular mounting portions may be provided on both ends of the fastener 40, and these annular mounting portions may be fitted into the electrode terminals 214 of the battery cell 20 to achieve the fastening of the fastener 40 to the battery cell 20. Of course, in addition to the embodiment shown in Fig. 9, the fastener 40 may be fastened to the battery cell 20 by other mechanical fastening methods, and the embodiments of the present application do not specifically limit the method of mounting the fastener 40 to the battery cell 20.

[0118] 9, optionally, in the embodiment of the present application, in the battery cell 20, the wall having the largest area is installed toward the third direction z, in which case the multiple battery cells 20 may be attached to each other and aligned along the third direction z, which can improve the stability between the multiple battery cells 20. At the same time, the fire duct 30 extends along the third direction z, i.e., the aligned direction of the multiple battery cells 20, and can simultaneously perform the functions of fire protection and temperature regulation for the multiple battery cells 20.

[0119] In addition, in the embodiment shown in Figure 9, in addition to the second regulating portion 410 of the locking groove structure extending along the third direction z, optionally, the first regulating portion 310 in the fire duct 30 may extend along the third direction z.

[0120] In some embodiments, the extension length of the first restricting portion 310 in the third direction z is the same as the extension length of the fire duct 30. The technical solution of this embodiment allows the fire duct 30 to be easily attached to a plurality of fasteners 40 with different positions by the first restricting portion 310. As an example, in different types of battery cells 20, the size of the battery cells 20 in the third direction z may change, so the position of the fastener 40 on the different types of battery cells 20 may change accordingly. As another example, the fastener 40 may be installed only on the first wall 210 of some of the battery cells 20 among the plurality of battery cells 20, and the position of the fastener 40 on the plurality of battery cells 20 may be adjusted and changed according to different application needs. In the above two cases, the technical solution of the embodiment of the present application can still use the first restricting portion 310 on the fire duct 30 to be fitted and attached with the fastener 40. In other words, the fixed attachment of the fire duct 30 is not affected by the change in the position of the fastener 40 on the plurality of battery cells 20. The technical solution of this embodiment can not only improve the installation efficiency of the fire duct 30 in the battery 10, but also enable the fire duct 30 to be applied to more application scenarios, and facilitate the popularization and use of the fire duct 30 in various different types of batteries 10.

[0121] However, in some other embodiments, the extension length of the first restricting portion 310 in the third direction z may be smaller than the extension length of the fire duct 30. Specifically, in the third direction z, the extension length of the first restricting portion 310 matches and corresponds to the extension length of the second restricting portion 410. The technical solution of this embodiment can realize the installation of the fire duct 30 in the battery 10 by the first restricting portion 310 and the second restricting portion 410, and can also reduce the manufacturing cost of the entire fire duct 30.

[0122] Above, the technical solutions of the battery 10 according to some embodiments of the present application have been described in conjunction with Figures 5 to 9, and in the technical solutions of the embodiments of the above application, the first restriction portion 310 in the fire duct 30 has a single locking claw structure. Below, the technical solutions of the battery 10 according to some other embodiments of the present application will be described in conjunction with Figures 10 to 14, and in the technical solutions of the embodiments of the following application, the first restriction portion 310 in the fire duct 30 has a double locking claw structure.

[0123] FIG. 10 shows another cross-sectional exploded schematic view of a battery 10 according to an embodiment of the present application, and FIG. 11 shows a local enlarged schematic view of part B in FIG.

[0124] Combining Figures 10 and 11, in an embodiment of the present application, the first regulating portion 310 on the fire duct 30 has a double locking claw structure, which includes a connection portion 311 and a first locking claw portion 312 and a second locking claw portion 313 aligned along the second direction y, the connection portion 311 is formed by the pipe wall of the fire duct 30 and extends along the second direction y, the first locking claw portion 312 and the second locking claw portion 313 are connected to the connection portion 311 and extend toward the battery cell 20, and the first locking claw portion 312 and the second locking claw portion 313 are used to clamp the second regulating portion 410 to regulate the fire duct 30 in the first direction x and the second direction y.

[0125] Optionally, as shown in FIG. 11 , a first regulating portion 310 is installed on both sides of the fire duct 30 in the second direction y, that is, a double locking claw structure is installed on both sides of the fire duct 30 in the second direction y, and the double locking claw structure on both sides of the fire duct 30 is used to clamp the second regulating portion 410, thereby further improving the stability of the installation of the fire duct 30 in the battery 10.

[0126] According to the technical solution of the embodiment of the present application, the fire duct 30 is provided with a first restricting part 310 having a double-locking claw structure, which is used to clamp the second restricting part 410 on the fastener 40 to realize the installation of the fire duct 30 in the battery 10. Specifically, after the double-locking claw structure clamps the second restricting part 410, the double-locking claw structure can achieve good restricting and fixing effects on the second restricting part 410 in both of the two opposite directions in the second direction y, so that the fire duct 30 can have a relatively high stability in the second direction y. In addition, when the double-locking claw structure clamps the second restricting part 410, there is an interaction force between the double-locking claw structure and the second restricting part 410 in the first direction x, which can ensure that the fire duct 30 also has a certain stability in the first direction x.

[0127] Optionally, in the first restricting portion 310 of this double locking claw structure, the connecting portion 311 may be connected to the end of the fire duct 30 that is remote from the battery cell 20. For example, as shown in Fig. 11, the cross section of the fire duct 30 may be a track shape, and the pipe wall of the fire duct 30 that is remote from the battery cell 20 may be a flat plate-like structure parallel to the second direction y, and this pipe wall may be called the first pipe wall of the fire duct, and the connecting portion 311 may be an extension of this first pipe wall in the second direction y. According to this embodiment, the thickness space in the first direction x of the fire duct 30 can be utilized to install the first locking claw portion 312 and the second locking claw portion 313 which are connected to the connection portion 311 and extend toward the battery cell 20. Correspondingly, the second regulating portion 410 sandwiched between the first locking claw portion 312 and the second locking claw portion 313 is installed in the thickness space in the first direction x of the fire duct 30, thereby saving the installation space of the battery cell 20 of the fire duct 30 and favoring the reduction of the overall volume of the battery 10, thereby improving the energy density of the battery 10.

[0128] 11, the first and second locking claws 312 and 313 may be plate-like structures, and the second restricting portion 410 may be plate-like structures correspondingly. In the second direction y, the distance between the first and second locking claws 312 and 313 may be approximate to the size of the second restricting portion 410, so that the first and second locking claws 312 and 313 can securely clamp the second restricting portion 410, improving the reliability of the installation of the fire duct 30 in the battery 10. In addition, the sizes of the first locking claw portion 312, the second locking claw portion 313 and the second regulating portion 410 in the first direction x may be the same or similar, and this embodiment makes full use of the sizes of the three in the first direction x, and increases the frictional force between the first locking claw portion 312 and the second locking claw portion 313 of the second regulating portion 410, thereby further improving the reliability of the installation of the fire duct 30 to the battery 10.

[0129] Based on the embodiment shown in FIG. 11, FIG. 12 shows another local enlarged exploded schematic view of the battery 10 according to one embodiment of the present application.

[0130] As shown in FIG. 12 , in an embodiment of the present application, the second regulating portion 410 is a locking structure, which includes a first locking portion 413 and a second locking portion 414 aligned along a first direction x, the first locking portion 413 is formed by the fixing device 40 to extend along a direction away from the battery cell 20, the second locking portion 414 is installed at an end of the first locking portion 413 away from the battery cell 20, and in the second direction y, the size of the second locking portion 414 is equal to or larger than the size of the first locking portion 413, and in the first regulating portion 310 of the double locking claw structure of the fire duct 30, the first locking claw portion 312 and / or the second locking claw portion 313 is locked to the second locking portion 414.

[0131] Specifically, in the embodiment of the present application, in the fixing device 40, the second restricting portion 410 is a locking structure including a first locking portion 413 and a second locking portion 414, and the second locking portion 414 is installed toward the fire duct 30 with respect to the first locking portion 413, and the size of the second locking portion 414 in the second direction y is equal to or larger than the size of the first locking portion 413 in the second direction y. Therefore, by using the second locking portion 414 having a relatively large size, it is possible to easily realize the locking of the second locking portion 414 in the double locking claw structure of the fire duct 30, and to improve the locking strength of the double locking claw structure of the second locking portion 414.

[0132] By way of example and not limitation, in some embodiments, in the first restricting portion 310 of the double locking claw structure of the fire duct 30, a third protrusion 3101 is provided at the end of the first locking claw portion 311 and / or the second locking claw portion 312 close to the battery cell 20, and the second locking portion 414 includes a fourth protrusion 4141 protruding relative to the first locking portion 413 along the second direction y, and the fourth protrusion 4141 and the third protrusion 3101 are fitted together to restrict the fire duct 30 in the first direction x. The technical solution of this embodiment can improve the locking strength of the second locking portion 414 and the double locking claw structure in the first direction x.

[0133] 12, a third protrusion 3101 is provided on each of the ends of the first locking claw portion 311 and the second locking claw portion 312 that are close to the battery cell 20, and these two third protrusions 3101 are provided side by side and facing each other in the second direction y. Corresponding to these two third protrusions 3101, two fourth protrusions 4141 are provided on the second locking portion 414 at the end of the second restriction portion 410 that is away from the battery cell 20, and these two fourth protrusions 4141 are located on both sides of the second locking portion 414 in the second direction y.

[0134] 12, after the second locking portion 414 is attached between the first locking claw portion 312 and the second locking claw portion 313, each third protrusion 3101 and the corresponding fourth protrusion 4141 are disposed opposite to each other in the first direction x, so that the third protrusion 3101 and the fourth protrusion 4141 can be fitted and locked to each other. In addition, the third protrusion 3101 is disposed at an end of the first restricting portion 310 that is closer to the battery cell 20, and the fourth protrusion 4141 is disposed at an end of the second restricting portion 410 that is farther from the battery cell 20, so that after the first restricting portion 310 and the second restricting portion 410 are locked to each other, the fourth protrusion 4141 is disposed toward the battery cell 20 with respect to the third protrusion 3101, and the fourth protrusion 4141 can prevent the third protrusion 3101 and the double locking claw structure in which it is located from being separated from the battery cell 20.

[0135] As can be understood, in addition to the embodiment shown in FIG. 12, the third protrusion 3101 may be installed on only one of the first locking claw portion 312 and the second locking claw portion 313, and correspondingly, the second locking portion 414 may have the fourth protrusion 4101 installed on only one side thereof in the second direction y, and this embodiment can also realize the double locking claw structure and the mutual locking of the second locking portion 414 in the first direction x.

[0136] It should also be explained that in the embodiment of the present application, after the second locking portion 414 is attached between the first locking claw portion 312 and the second locking claw portion 313, the relative positions of the third protrusion 3101 and the fourth protrusion 4141 may be designed such that the fourth protrusion 4141 is disposed toward the battery cell 20 with respect to the third protrusion 3101. Therefore, the fourth protrusion 4141 may be disposed at an end of the second restricting portion 410 that is away from the battery cell 20, or may be disposed at another position of the second restricting portion 410. The third protrusion 3101 may be disposed at an end of the first locking claw portion 312 and / or the second locking claw portion 313 that is closer to the battery cell 20, or may be disposed at another position of the first locking claw portion 312 and / or the second locking claw portion 313. The embodiment of the present application is not limited to the specific positions of the third protrusion 3101 and the fourth protrusion 4141.

[0137] Alternatively, in the embodiment shown in FIG. 12, the third protrusion 3101 and the fourth protrusion 4141 are both block-shaped protrusions, and of course, in other embodiments, the third protrusion 3101 and the fourth protrusion 4141 may be protrusions of other shapes, and the examples of the present application are not specifically limited to the shapes of the third protrusion 3101 and the fourth protrusion 4141.

[0138] In another embodiment of the present application, a third inclined surface 3102 is provided at an end of the third protrusion 3101 close to the battery cell 20, and a fourth inclined surface 4142 is provided at an end of the fourth protrusion 4141 away from the battery cell 20, the third inclined surface 3102 and the fourth inclined surface 4142 corresponding to each other and respectively inclined in a plane perpendicular to the first wall 201 of the battery cell 20.

[0139] Based on the embodiment shown in FIG. 12, FIG. 13 shows another locally enlarged schematic view of a battery 10 according to one embodiment of the present application, where FIG. 13(a) is a locally enlarged exploded schematic view, and FIG. 13(b) is a locally enlarged assembled schematic view.

[0140] As shown in FIG. 13 , a fourth inclined surface 4142 is provided at the end of the fourth protrusion 4141 on the second engagement portion 414 close to the battery cell 20, and a third inclined surface 3102 is provided at the end of the third protrusion 3101 on the first engagement claw portion 312 and the second engagement claw portion 313 away from the battery cell 20. In the process of attaching the second locking portion 414 to the first locking claw portion 312 and the second locking claw portion 313, the third inclined surface 3102 and the fourth inclined surface 4142 can be installed opposite to each other and slidably attached to each other, and the first locking claw portion 312 and the second locking claw portion 313 slide and contact the fourth inclined surface 4142 of the second locking portion 414 via their third inclined surface 3102, thereby facilitating the attachment of the second locking portion 414 between the first locking claw portion 312 and the second locking claw portion 313.

[0141] Optionally, the third inclined surface 3102 and the fourth inclined surface 4142 may be parallel to each other to optimize the sliding fit between the first locking claw portion 312 and the second locking claw portion 313 of the second locking portion 414.

[0142] According to the technical solution of the embodiment of the present application, a third protrusion 3101 is provided on the first locking claw portion 312 and / or the second locking claw portion 313, and a fourth protrusion 4141 is provided on the second locking portion 414, the fourth protrusion 4141 being engaged with the third protrusion 3101, and the third protrusion 3101 and the fourth protrusion 4141 may be provided with inclined surfaces engaging with each other, thereby ensuring that the second locking portion 414 and the first locking claw portion 312 and the second locking claw portion 313 can have a relatively excellent locking effect, and further improving the installation efficiency between the first locking claw portion 312 and the second locking claw portion 313 of the second locking portion 414, thereby ensuring the installation stability of the fire duct 30 in the battery 10, and at the same time improving the installation efficiency of the fire duct 30 in the battery 10.

[0143] Based on the embodiment shown in FIG. 13, FIG. 14 shows another perspective exploded schematic view of the battery 10 according to one embodiment of the present application.

[0144] As shown in FIG. 14 , in an embodiment of the present application, the first regulating portion 310 is a double-locking claw structure, which extends along a third direction z, and the second regulating portion 410 of the fastener 40 can slide the double-locking claw structure along the third direction z, where 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 duct 30.

[0145] Specifically, in the first regulating portion 310 of the double locking claw structure, the first locking claw portion 312 and the second locking claw portion 313 extend along the third direction z and can have a constant length in the third direction z, thereby making it easy for the second regulating portion 410 in the fastener 40 to slide between the first locking claw portion 312 and the second locking claw portion 313 along the third direction z.

[0146] During operation of the battery cell 20, the gas inside the battery cell 20 expands due to a chemical reaction therein, and the battery cell 20 also expands accordingly. When the battery cell 20 expands in the third direction z, it causes a change in position of the fastener 40 located on the first wall 201, or causes a change in position of the second restricting portion 410 on the fastener 40. Since the second restricting portion 410 can slide between the first locking claw portion 312 and the second locking claw portion 313 of the first restricting portion 310 along the third direction z, even if the expansion of the battery cell 20 causes a change in position of the second restricting portion 410, the effect on the fire duct 30 is relatively small or there is no effect, so that even if the battery cell 20 expands, the stability of the attachment of the fire duct 30 to the battery 10 is still relatively high.

[0147] Optionally, as shown in FIG. 14, in the embodiment of the present application, in addition to the first regulating portion 310 of the double locking claw structure extending along the third direction z, the second regulating portion 410 of the fastener 40 may optionally extend along the third direction z to improve the reliability of attachment between the second regulating portion 410 and the double locking claw structure.

[0148] In addition, in addition to the structure of the second regulating portion 410 of the fastener 40 in the embodiment of the present application being different from the technical solution shown in FIG. 9, other related technical solutions of the fastener 40 can be referred to the relevant description of the embodiment shown in FIG. 9 above, and no further specific description will be given here.

[0149] Optionally, by way of example and not limitation, in the embodiment shown in FIG. 14, the extension length of the first restricting portion 310 of the double-claw structure in the third direction z is the same as the extension length of the fire duct 30. However, in some other embodiments, the extension length of the first restricting portion 310 of the double-claw structure in the third direction z may be smaller than the extension length of the fire duct 30. Specifically, the extension length of the first restricting portion 310 in the third direction z matches and corresponds to the extension length of the second restricting portion 410.

[0150] 9 above, when the extension length of the first restricting portion 310 in the third direction z is the same as the extension length of the fire duct 30 in the third direction z, the fire duct 30 can be easily mounted on a plurality of fasteners 40 at different positions by the first restricting portion 310, thereby improving the mounting efficiency of the fire duct 30 in the battery 10, allowing the fire duct 30 to be applied to more application scenarios, and favoring the popularization and use of the fire duct 30 in various different types of batteries 10. When the extension length of the first restricting portion 310 in the third direction z is smaller than the extension length of the fire duct 30 in the third direction z, the manufacturing cost of the entire fire duct 30 can be reduced.

[0151] By synthesizing the technical solutions of the embodiments shown in Figures 4 to 14 above, in the present application, the fire duct 30 may include at least a pair of first regulating portions 310, and in the second direction y, each pair of the first regulating portions 310 is located on both sides of the fire duct 30 respectively, and the fixing device 40 may include at least a pair of second regulating portions 410, and each pair of the second regulating portions 410 and each pair of the first regulating portions 310 are installed correspondingly.

[0152] Optionally, the fire duct 30 may include a pair of first regulating portions 310, which are located on both sides of the fire duct 30 in the second direction y, and the extension length of the pair of first regulating portions 310 in the third direction z is equal to or less than the extension length of the fire duct 30. In this embodiment, the fixing device 40 includes at least a pair of second regulating portions 410, and among the at least a pair of second regulating portions 410, each pair of second regulating portions 410 is located corresponding to both sides of the fire duct 30 in the second direction y, and each pair of second regulating portions 410 is installed corresponding to the pair of first regulating portions 310.

[0153] Alternatively, the fire duct 30 may include a plurality of pairs of first restricting portions 310, and in the second direction y, each pair of the first restricting portions 310 of the plurality of pairs of first restricting portions 310 is located on both sides of the fire duct 30, and the extension length of each pair of the first restricting portions 310 in the third direction z is smaller than the extension length of the fire duct 30. In this embodiment, the fixing device 40 includes a plurality of pairs of second restricting portions 410, and among the plurality of pairs of second restricting portions 410, each pair of the second restricting portions 410 is located corresponding to both sides of the fire duct 30 in the second direction y, and in the third direction z, the plurality of pairs of second restricting portions 410 may be installed in one-to-one correspondence with the plurality of pairs of first restricting portions 310.

[0154] According to the technical solution of the embodiments of the present application, at least a pair of first regulating parts 310 are installed on both sides of the fire duct 30 in the second direction y, and the at least a pair of first regulating parts 310 are interfitted with the corresponding at least a pair of second regulating parts 410 to realize relatively reliable and stable regulation and fixing of the fire duct 30 in the second direction y, thereby improving the installation stability of the fire duct 30 in the battery 10.

[0155] In addition to the technical solutions of the examples of the above application, in some other embodiments, the first regulating portion 310 is not installed on both sides of the fire duct 30 in the second direction y, but may be installed on the side of the fire duct 30 facing the battery cell 20, that is, on one side of the fire duct 30 in the first direction x. Or, the first regulating portion 310 may be installed on both sides of the fire duct 30 in the third direction z. The examples of the present application are not specifically limited to the specific positions and numbers of the first regulating portion 310 in the fire duct 30, and only aim to realize a stable installation of the battery 10 in the fire duct 30 by fitting the first regulating portion 310 and the second regulating portion 410 on the fastener 40 to each other.

[0156] In addition, in this application, the first regulating part 310 may be a single-claw structure or a double-claw structure as described in the embodiments of the above application, and the first regulating part 310 may also be a three-claw structure or a structure with more claws, so as to further reinforce the stability of the installation of the fire duct 30 on the battery 10. In this case, for each claw of the multi-claw structure, reference may be made to the related technical solutions of the above embodiments, and for the second regulating part 410 corresponding to the multi-claw structure, reference may be made to the related technical solutions of the above embodiments, and no further description will be given here.

[0157] FIG. 15 shows another perspective exploded schematic view of a battery 10 according to an embodiment of the present application.

[0158] As shown in FIG. 15 , the battery 10 includes a plurality of battery cells 20 that are attached to and aligned along a third direction z, and the fire duct 30 extends along this third direction z and is installed in correspondence with the pressure relief mechanisms 213 in the plurality of battery cells 20.

[0159] Optionally, as shown in Fig. 15, among the battery cells 20 arranged in a row along the third direction z, a fixing device 40 is installed only between some of the battery cells 20 and the fire duct 30. A first regulating portion 310 is installed in the fire duct 30, and a second regulating portion 410 is installed in the fixing device 40. For the related technical solutions of the first regulating portion 310 and the second regulating portion 410, refer to the technical solutions in any one of the embodiments in Figs. 4 to 14 above.

[0160] The technical solution of this embodiment can ensure the stability of the fixing of the fire duct 30 in the battery 10, while reducing the number of fasteners 40 in the battery 10, thereby reducing the manufacturing cost of the battery 10.

[0161] Optionally, in the embodiment shown in FIG. 15, at least one battery cell without a fastener 40 is interposed between the battery cells 20 on which the fastener 40 is installed. In this embodiment, the size of the fastener 40 may be set to be relatively large. For example, in the third direction z, the fastener 40 may be installed on the first wall 201 of the battery cell 20 in which it is located, or may be installed on the first wall 201 of the battery cell 20 adjacent to the battery cell 20 in which it is located. Therefore, the technical solution of this embodiment can use a relatively large fastener 40 to realize a relatively stable and reliable fastening of the fastener 40 on the battery cell 20, while a relatively large second restricting portion 410 is installed on the relatively large fastener 40 to improve the reliability of the attachment between the second restricting portion 410 and the first restricting portion 310 on the fire duct 30, thereby improving the stability of the attachment of the fire duct 30 to the battery 10.

[0162] As can be understood, in the battery 10 shown in Fig. 15, the battery 10 may further include a housing 100 for housing a plurality of battery cells 20, for example, the housing 100 shown in Fig. 15 may be used to house two rows of battery cells 20 aligned along the second direction y, and a plurality of battery cells 20 in one row are aligned along the third direction z. For example, only one row of the two rows of battery cells 20 is shown in Fig. 15.

[0163] For further understanding, the sectional schematic views in the above Figures 4 to 8 and Figures 10 to 13 may be sectional schematic views along the CC' direction in Figure 15, and the perspective schematic views shown in the above Figures 9 and 14 may be local perspective views in Figure 15. In other words, any technical solution in any one of the embodiments of the application in the above Figures 4 to 14 may be applied to the embodiment of the application shown in Figure 15.

[0164] In the embodiment of the above application, the wall of the fire duct 30 may be a wall with a uniform thickness. In this embodiment, the manufacturing method of the fire duct 30 is relatively simple, and the manufacturing process is relatively mature.

[0165] Optionally, in order to further increase the strength of the fire duct 30, improve the impact resistance of the fire duct 30, and ensure the fire fighting and temperature control functions of the fire duct 30 in the battery 10, the thickness of the pipe wall of at least a part of the fire duct 30 may be designed to be thicker.

[0166] In some possible embodiments, the fire duct 30 includes a first pipe wall 301 and a second pipe wall 302 arranged opposite each other along a first direction x, the first pipe wall 301 being farther away from the battery cell 20 than 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 a reinforcement 50 is installed in the first pipe wall 301.

[0167] FIG. 16 shows a schematic structural diagram of a fire duct 30 according to one embodiment of the present application, in which FIG. 16(a) is a schematic oblique structural diagram of the fire duct 30, and FIG. 16(b) is a schematic cross-sectional diagram of the fire duct 30 shown in FIG. 16(a).

[0168] By way of example and not limitation, in FIG. 16 , the cross section of the fire duct 30 is generally truck-shaped, in which the first pipe wall 301 and the second pipe wall 302, which are installed opposite each other along a first direction x, may be of a flat plate structure, and 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.

[0169] It should be noted that in other embodiments, the fire duct 30 may be a duct of other shapes, such as a circular duct, a rectangular duct, or a polygonal duct, and in this embodiment, the pipe wall of the fire duct 30 may also include a first pipe wall 301 and a second pipe wall 302 that are oppositely installed along the first direction x, and the first pipe wall 301 and the second pipe wall 302 may be a flat plate structure, a curved plate structure, or other shape structures, and the embodiments of the present application are not limited to the specific shape structures of the fire duct 30, the first pipe wall 301, and the second pipe wall 302.

[0170] According to the technical solutions of the embodiments of the present application, in the fire duct 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 thickness of the first pipe wall 301 away from the battery cell 20 is relatively large and has relatively high strength, which can withstand the impact of external forces on the fire duct 30 to a relatively large extent, and can improve the reliability of the battery 10 of the fire duct 30. At the same time, when the discharged material in the battery cell 20 is discharged through the pressure relief mechanism 213, the discharged material can more easily break through the second pipe wall 302 having a smaller thickness, so that the fire-fighting medium in the fire duct 30 can be discharged, thereby fulfilling the fire-fighting function; on the other hand, when the discharged material reaches the first pipe wall 301 through the second pipe wall 302, the first pipe wall 301 having a larger thickness and a higher strength can bear the impact of the discharged material, and the first pipe wall 301 is less likely to be broken through by the discharged material, so that the fire-fighting medium in the fire duct 30 can be prevented from being discharged through the notch in the first pipe wall 301, and the wasteful consumption of the fire-fighting medium can be avoided, thereby improving the fire-fighting effect of the fire duct 30.

[0171] Optionally, in the embodiment shown in FIG. 16, the first pipe wall 301 includes a protrusion away from the direction of the battery cell 20, and the installation of this protrusion can realize that the thickness of the first pipe wall 301 is 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 duct capacity for accommodating the firefighting medium in the fire duct 30. Of course, in other embodiments, the first pipe wall 301 may appropriately protrude toward the inside of the fire duct 30 in order to save the installation space that the fire duct 30 needs to occupy. In addition, in the embodiment shown in FIG. 16, the cross section of the first pipe wall 301 is approximately trapezoidal, and in other embodiments, the cross section of the first pipe wall 301 may be rectangular or other shapes, and the examples of the present application are not specifically limited to the specific shape of the cross section of the first pipe wall 301.

[0172] FIG. 17 shows another structural schematic diagram of a fire duct 30 according to one embodiment of the present application, where FIG. 17(a) is a perspective structural schematic diagram of the fire duct 30, and FIG. 17(b) is a cross-sectional schematic diagram of the fire duct 30 shown in FIG. 17(a).

[0173] 17, in the fire duct 30 according to the embodiment of the present application, a reinforcement material 50 is installed on the first pipe wall 301. Optionally, the reinforcement material 50 is installed on the side of the first pipe wall 301 away from the direction of the battery cells 20, and the installation of the reinforcement material 50 does not affect the duct capacity in the fire duct 30.

[0174] Optionally, the reinforcement 50 may be a strip structure. In some related art, the strip structure reinforcement 50 may be called a reinforcing rib. By installing the reinforcement 50 on the first pipe wall 301, the strength of the first pipe wall 301 can be improved, so as to improve the impact resistance of the first pipe wall 301, and improve the reliability of the use of the fire duct 30 in the battery 10.

[0175] By way of example and not limitation, in the embodiment shown in FIG. 17 , the reinforcement 50 includes at least one first reinforcement extending along a second direction y, where the at least one first reinforcement is aligned along a third direction z, and / or the reinforcement 50 includes at least one second reinforcement extending along a third direction z, where the at least one second reinforcement is aligned along a second direction y.

[0176] Optionally, in some embodiments, the size of the first reinforcing member in the second direction y may be similar to or the same as the size of the first pipe wall 301 in the second direction y. Optionally, in some other embodiments, as shown in Fig. 17, the first reinforcing member may further cover the connection portion 311 of the first restricting member 310, i.e., the size of the first reinforcing member in the second direction y may be similar to or the same as the total size of the first pipe wall 301 and the connection portion 311 in the second direction y. The provision of at least one first reinforcing member can improve the strength of the first pipe wall 301 in the second direction y.

[0177] Similarly, the size of the second reinforcement in the third direction z may be similar to or the same as the size of the first pipe wall 301 in the third direction z. The provision of the at least one second reinforcement can improve the strength of the first pipe wall 301 in the third direction z.

[0178] As can be seen, in order to improve the strength of the first pipe wall 301 to a relatively large extent, in some other embodiments, the first pipe wall 301 may have a relatively large thickness and may further include a reinforcement member 50. That is, by combining the solutions of the embodiments shown in Figures 16 and 17, a fire duct 30 having a relatively high strength can be obtained.

[0179] FIG. 18 shows another structural schematic diagram of a fire duct 30 according to one embodiment of the present application, where FIG. 18(a) is a perspective structural schematic diagram of the fire duct 30, and FIG. 18(b) is a cross-sectional schematic diagram of the fire duct 30 shown in FIG. 18(a).

[0180] As shown in FIG. 18, in the embodiment of the present application, the size of the first tube wall 301 is larger than the size of the second tube wall 302 in the second direction y.

[0181] By way of example and not limitation, in the embodiment shown in FIG. 18 , the cross section of the fire duct 30 may be an inverted trapezoid, and the size of the first pipe wall 301 in the second direction y may be greater than the size of the second pipe wall 302 in the second direction y.

[0182] According to the technical solution of the embodiment shown in FIG. 18, in the fire duct 30, by designing the sizes 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 stronger than that of the second pipe wall 302, that is, the first pipe wall 301 has a relatively high strength and can withstand the impact of external force on the fire duct 30 to a relatively high extent, so as to improve the reliability of the use of the fire duct 30 in the battery 10. In addition, when the discharged matter inside the battery cell 20 impacts the second pipe wall 302 through the pressure relief mechanism 213, the entire second pipe wall 302 may be attached to the first pipe wall 301. If the first pipe wall 301 and the second pipe wall 302 are the same size, the second pipe wall 302 and the first pipe wall 301 attached to each other will block the flow path, thereby preventing the fire-fighting medium in the fire duct 30 from flowing into the corresponding pressure relief mechanism 213 and the inside of the battery cell 20, which will affect the fire-fighting effect of the fire duct 30. However, according to the technical solution of the embodiment of the present application, 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, so that even if the second pipe wall 302 adheres to the first pipe wall 301, the flow path will not be completely blocked, and the fire-fighting medium can flow into the corresponding pressure relief mechanism 213 and the inside of the battery cell 20, and can achieve good fire-fighting effect.

[0183] Optionally, in the embodiment shown in FIG. 18, the first pipe wall 301 of the fire duct 30 can simultaneously adopt the technical solutions of FIG. 16 and / or FIG. 17 above, that is, the thickness of the first pipe wall 301 is greater than that of the second pipe wall 302, and / or a reinforcing material 50 is installed in the first pipe wall 301 to further improve the strength of the first pipe wall 301.

[0184] It should be explained that in the above Figures 16 to 18, the first restricting portion 310 in the fire duct 30 is exemplified by the first restricting portion 310 shown in Figure 8, and the first restricting portion 310 in Figures 16 to 18 may be the first restricting portion 310 in any one of the embodiments in the above Figures 4 to 15. In other words, in the embodiments shown in Figures 16 to 18, the related technical solutions of the first pipe wall 301, the second pipe wall 302 and the reinforcing member 50 may be applied to any one of the embodiments in the above Figures 4 to 15.

[0185] An embodiment of the present application further provides a power consuming device, which may include the battery 10 in the above embodiment, and the battery 10 is used to provide electrical energy to the power consuming device.

[0186] Alternatively, the power consumer may be a vehicle 1, a watercraft or a spacecraft.

[0187] The above describes the battery 10 and power consumption device of the embodiments of the present application. Below, the manufacturing method and apparatus for the battery of the embodiments of the present application will be described. For parts that are not described in detail, please refer to the above embodiments.

[0188] 19 shows a flow chart of a battery manufacturing method 300 according to one embodiment of the present application. As shown in FIG. 19, the method 300 may include the following steps:

[0189] S301: Providing 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 that is activated to release internal pressure when an internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0190] S302: Provide a fire duct 30, which is used for containing a fire-fighting medium, and the fire duct 30 is used for discharging the fire-fighting medium when the pressure relief mechanism 213 is activated.

[0191] S303: Provide a fixture 40 to be installed between the first wall 201 and the fire duct 30.

[0192] S304: The fire duct 30 is fixedly attached to the fixture 40.

[0193] Here, the fire duct 30 includes a first regulating portion 310, and the fixing device 40 includes a second regulating portion 410, and the first regulating portion 310 and the second regulating portion 410 fit together to regulate the fire duct 30 in a first direction x and a second direction y, where 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 duct 30.

[0194] 20 shows a schematic block diagram of a battery manufacturing apparatus 400 according to an embodiment of the present application. As shown in FIG. 20, the battery manufacturing apparatus 400 may include a providing module 401 and an attaching module 402.

[0195] The providing module 401 is used to provide a battery cell 20, which includes a first wall 201, and the first wall 201 is provided with a pressure relief mechanism 213 that is activated to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0196] The providing module 401 is further used to provide a fire duct 30, which is used to contain the fire-fighting medium, and the fire duct 30 is used to discharge the fire-fighting medium when the pressure relief mechanism 213 is activated.

[0197] This provision module 401 is further used to provide a fixture 40 that is installed between the first wall 201 and the fire duct 30 .

[0198] The mounting module 402 is used to fixedly mount the fire duct 30 to the fixture 40 .

[0199] Here, the fire duct 30 includes a first regulating portion 310, and the fixing device 40 includes a second regulating portion 410, and the first regulating portion 310 and the second regulating portion 410 fit together to regulate the fire duct 30 in a first direction x and a second direction y, where 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 duct 30.

[0200] Although the present application has been described with reference to the preferred embodiments, various modifications may be made thereto and equivalents may be substituted for the components therein without departing from the scope of the present application. In particular, unless there is a structural conflict, each technical feature mentioned in each embodiment may be combined in any manner. The present application is not limited to the specific embodiments disclosed in the specification, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, A battery cell including a first wall, the first wall being provided with a pressure relief mechanism that is activated when an internal pressure or temperature of the battery cell reaches a threshold value to release the internal pressure; A fire duct for storing a fire fighting medium and discharging the fire fighting medium when the pressure relief mechanism is activated; a fastener for fastening the fire duct, the fastener being installed between the first wall and the fire duct; Here, the fire duct includes a first regulating portion, the fixing device includes a second regulating portion, the first regulating portion and the second regulating portion are fitted to each other to regulate the fire duct in a first direction and a second direction, the first direction is perpendicular to the first wall, the second direction is parallel to the first wall and perpendicular to the extension direction of the fire duct, and A battery, wherein the first regulating portion includes a connection portion and a first engaging claw portion, the connection portion being formed by a pipe wall of the fire duct and extending along the second direction, and the first engaging claw portion being connected to the connection portion and extending toward the battery cell.

2. The first restriction portion has a single locking claw structure, The battery according to claim 1 , wherein the connection portion and the first locking claw portion form the single locking claw structure, and the first locking claw portion is locked to the second restriction portion.

3. The battery described in claim 2, wherein the second regulating portion is a locking groove structure, the locking groove structure including a first locking groove wall and a second locking groove wall aligned along the second direction, and the first locking groove wall and the second locking groove wall are used to clamp the first locking claw portion and regulate the fire duct in the first direction and the second direction.

4. The battery described in claim 3, wherein a first protrusion is provided at an end of the first engagement groove wall and / or the second engagement groove wall away from the battery cell, and a second protrusion is provided at an end of the first engagement claw portion closer to the battery cell, and the first protrusion and the second protrusion fit together to restrict the fire duct in the first direction.

5. 5. The battery of claim 4, wherein a first inclined surface is provided at an end of the first protrusion away from the battery cell, and a second inclined surface is provided at an end of the second protrusion close to the battery cell, the first inclined surface and the second inclined surface corresponding to each other and each inclined in a plane perpendicular to the first wall.

6. The battery according to any one of claims 3 to 5, wherein the locking groove structure extends along a third direction, and the first locking claw portion can slide along the locking groove structure along the third direction, wherein the third direction is parallel to the first wall and parallel to the extension direction of the fire duct.

7. the first restriction portion further includes a second locking claw portion, the first restriction portion has a double locking claw structure, the first locking claw portion, the second locking claw portion and the connection portion form the double locking claw structure, the first locking claw portion and the second locking claw portion are aligned along the second direction, the first locking claw portion and the second locking claw portion are connected to the connection portion and extend toward the battery cell, The battery of claim 1 , wherein the first engaging claw portion and the second engaging claw portion are used to clamp the second regulating portion to regulate the fire duct in the first direction and the second direction.

8. 8. The battery of claim 7, wherein the second restricting portion is a locking structure, the locking structure including a first locking portion and a second locking portion aligned along the first direction, the first locking portion is formed by the fastener to extend in a direction away from the battery cell, the second locking portion is installed at an end of the first locking portion away from the battery cell, the size of the second locking portion is equal to or greater than the size of the first locking portion in the second direction, and the first locking claw portion and / or the second locking claw portion is locked to the second locking portion.

9. a third protrusion is provided on an end of the first locking claw portion and / or the second locking claw portion that is close to the battery cell; The battery of claim 8, wherein the second engaging portion includes a fourth protrusion that protrudes relative to the first engaging portion along the second direction, and the fourth protrusion and the third protrusion engage with each other to restrict the fire duct in the first direction.

10. 10. The battery of claim 9, wherein the third protrusion has a third inclined surface at an end thereof close to the battery cell, and the fourth protrusion has a fourth inclined surface at an end thereof away from the battery cell, the third inclined surface and the fourth inclined surface corresponding to each other and each inclined to a plane perpendicular to the first wall.

11. The battery described in any one of claims 7 to 10, wherein the double locking claw structure extends along a third direction, and the second regulating portion can slide the double locking 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 duct.

12. A battery as described in any one of claims 1 to 11, wherein the first regulating portion extends along a third direction, and in the third direction, the extension length of the first regulating portion is the same as the extension length of the fire duct, and wherein the third direction is parallel to the first wall and parallel to the extension direction of the fire duct.

13. The fire duct includes at least a pair of the first regulating portions, and in the second direction, each pair of the first regulating portions is located on both sides of the fire duct, The battery according to claim 1 , wherein the fixing device includes at least a pair of the second restricting portions, and each pair of the second restricting portions is disposed corresponding to each pair of the first restricting portions.

14. 14. The battery of claim 1, wherein the fire duct includes a first pipe wall and a second pipe wall arranged opposite each other along the first direction, the first pipe wall being farther away from the battery cell than the second pipe wall, and wherein a thickness of the first pipe wall is greater than a thickness of the second pipe wall, and / or the first pipe wall is provided with a reinforcement material.

15. 15. The battery of claim 14, wherein in the second direction, a size of the first tube wall is greater than a size of the second tube wall.

16. 16. A power consuming device comprising a battery according to any one of claims 1 to 15, the battery being adapted to provide electrical energy to the power consuming device.

17. A method for manufacturing a battery, comprising: A battery cell including a first wall, the first wall being provided with a pressure relief mechanism that is activated to release the internal pressure of the battery cell when an internal pressure or temperature of the battery cell reaches a threshold value; providing a fire duct for containing a fire fighting medium and discharging the fire fighting medium when the pressure relief mechanism is activated; providing a fixture installed between the first wall and the fire duct; and fixedly attaching the fire duct to the fixture; Here, the fire duct includes a first regulating portion, the fixing device includes a second regulating portion, the first regulating portion and the second regulating portion are fitted to each other to regulate the fire duct in a first direction and a second direction, the first direction is perpendicular to the first wall, the second direction is parallel to the first wall and perpendicular to the extension direction of the fire duct, A method for manufacturing a battery, wherein the first regulating portion includes a connection portion and a first engaging claw portion, the connection portion being formed by a pipe wall of the fire duct and extending along the second direction, and the first engaging claw portion being connected to the connection portion and extending toward the battery cell.

18. A battery manufacturing apparatus comprising: A provision module, providing a battery cell including a first wall, the first wall being provided with a pressure relief mechanism that is activated to release the internal pressure of the battery cell when an internal pressure or temperature of the battery cell reaches a threshold; providing a fire duct for containing a fire fighting medium and discharging the fire fighting medium when the pressure relief mechanism is activated; a provision module adapted to provide a fixture to be installed between the first wall and the fire duct; a mounting module for fixedly mounting the fire duct to the fixture; Here, the fire duct includes a first regulating portion, the fixing device includes a second regulating portion, the first regulating portion and the second regulating portion are fitted to each other to regulate the fire duct in a first direction and a second direction, the first direction is perpendicular to the first wall, the second direction is parallel to the first wall and perpendicular to the extension direction of the fire duct, A battery manufacturing apparatus, wherein the first regulating portion includes a connection portion and a first engaging claw portion, the connection portion being formed by a pipe wall of the fire duct and extending along the second direction, and the first engaging claw portion being connected to the connection portion and extending toward the battery cell.

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