CN115764148A

CN115764148A - Battery, electric device, method and equipment for preparing battery

Info

Publication number: CN115764148A
Application number: CN202211564430.7A
Authority: CN
Inventors: 曾毓群; 黄小腾; 杨海奇; 洪家荣; 胡浪超; 汪文礼
Original assignee: Jiangsu Contemporary Amperex Technology Ltd
Current assignee: Jiangsu Contemporary Amperex Technology Ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2023-03-07
Also published as: CN112072046A; CN112072046B

Abstract

The embodiment of the application provides a battery, an electric device, a method and equipment for preparing the battery, wherein the battery comprises: the battery cell is provided with a pressure relief mechanism, and the pressure relief mechanism is used for actuating to relieve the internal pressure when the internal pressure or the temperature of the battery cell reaches a threshold value; a manifold for receiving a fire-fighting medium; a fire conduit in communication with the manifold conduit to deliver the fire-fighting medium thereto, the fire conduit configured to expel the fire-fighting medium toward the battery cell upon actuation of the pressure relief mechanism; the two ends of the fire fighting pipeline are respectively a first end and a second end, the first end is used for being communicated with the collecting pipeline so that the fire fighting medium enters the fire fighting pipeline through the first end, and the second end is arranged in a closed mode. The formation of the condensed water outside the pipe wall of the fire-fighting pipeline can be reduced, and the problem of short circuit of the single battery caused by the condensed water is solved.

Description

Battery, electric device, method and equipment for preparing battery

The application is a divisional application of invention patent applications with the application date of 2020, 10/19/month and the application number of 202011120232.2 entitled "battery, electric device, method and apparatus for preparing battery".

Technical Field

The present application relates to the field of battery technologies, and in particular, to a battery, an electric device, and a method and an apparatus for manufacturing a battery.

Background

Batteries are receiving more and more attention as an important new power source. In order to reduce the danger of spontaneous combustion of the battery due to thermal failure during use, a fire protection system is usually added on the battery to play a role in fire protection when the battery is in a combustion event.

However, as the temperature changes during use of the battery, the fire protection system is prone to form condensation on the outer wall, which in turn tends to cause short-circuiting of the electrically conductive parts of the battery cells.

Disclosure of Invention

The application provides a battery, an electric device, a method and equipment for preparing the battery, which can reduce or avoid the generation of condensed water, thereby reducing or avoiding the short circuit of a battery monomer.

A first aspect of the present application provides a battery comprising:

the battery cell is provided with a pressure relief mechanism, and the pressure relief mechanism is used for actuating to release the internal pressure when the internal pressure or the temperature of the battery cell reaches a threshold value;

a manifold for receiving a fire-fighting medium;

a fire conduit for communicating with the manifold conduit to deliver fire-fighting medium to the fire conduit, and the fire conduit is configured to expel the fire-fighting medium toward the battery cell upon actuation of the pressure relief mechanism;

wherein, the both ends of fire control pipeline are first end and second end respectively, and first end is used for with the mass flow pipeline intercommunication to make fire-fighting medium get into the fire control pipeline via first end, the setting is sealed to the second end.

In some embodiments, the second end of the fire conduit is closed by a first closure cap.

In some embodiments, the second end has an opening, the first closure cap includes an end wall and a side wall connected to close the opening, the side wall is disposed around a periphery of the opening, and the side wall is configured to sealingly engage a wall of the second end to close the opening.

In some embodiments, the fire conduit is configured to be damaged by emissions from the battery cell upon actuation of the pressure relief mechanism to allow the fire-fighting medium to exit and enter the battery cell interior via the pressure relief mechanism.

In some embodiments, the fire conduit has a frangible portion for being broken by the emissions upon actuation of the pressure relief mechanism.

In some embodiments, the fire fighting pipeline is arranged in a plurality, and the plurality of fire fighting pipelines are arranged at intervals on one side or two sides of the collecting pipeline;

the battery monomer sets up to a plurality of, and a plurality of battery monomers are set up to two at least battery modules, and every battery module includes at least one battery monomer, and the free pressure release mechanism of battery in every battery module all sets up with a fire control pipeline is relative.

In some embodiments, the battery module includes a plurality of battery cells arranged in a predetermined direction, and a length direction of the fire fighting pipe coincides with the arrangement direction of the plurality of battery cells.

In some embodiments, the length of the manifold is at a predetermined angle to the direction of alignment.

In some embodiments, the two ends of the collecting pipe are respectively a third end and a fourth end, the third end is used for inputting fire-fighting media, and the fourth end is closed.

In some embodiments, the fourth end of the manifold conduit is closed by a second closure cap.

In some embodiments, the fire conduit is gravitationally higher than the manifold conduit to plug the fire-fighting medium within the manifold conduit when the pressure relief mechanism is not activated.

In some embodiments, further comprising: and the support piece is used for supporting the collecting pipe.

In some embodiments, the support has a support arm which is arranged to be supported on a wall of the current collecting pipe facing the battery cells.

In some embodiments, the supporting arms are arranged in pairs, the supporting arms in pairs are arranged at intervals, the pipe wall of the current collecting pipe facing the battery cell is provided with a protruding portion, the protruding portion is arranged to be inserted between the supporting arms in pairs, and two sides of the protruding portion are respectively supported by the supporting arms in pairs.

In some embodiments, further comprising: and a limiting member configured to limit the current collecting duct between adjacent battery modules.

In some embodiments, the stop comprises a stop wall and a leg connected to the stop wall;

the limiting wall is positioned above the current collecting pipeline and used for limiting the current collecting pipeline to move along the direction far away from the battery monomer;

the landing leg is used for supporting spacing wall, and the landing leg is located and is in order to spacing to the mass flow pipeline between mass flow pipeline and the battery module.

In some embodiments, the legs are arranged in pairs, with the pairs of legs spaced apart, and the manifold conduit is confined between the pairs of legs.

In some embodiments, the retaining wall abuts against a wall of the manifold.

In some embodiments, the retaining wall has an arcuate portion that projects toward the manifold to abut a wall of the manifold.

In some embodiments, the legs are provided with a clamping portion which is convexly arranged towards the collecting pipe to limit the collecting pipe.

In some embodiments, the clip abuts against a wall of the manifold.

In some embodiments, the clamping portion is configured as a cantilever structure.

In some embodiments, further comprising: a thermal management component for regulating a temperature of the battery cells, the thermal management component configured to communicate with the manifold conduit to deliver a fire-fighting medium to the manifold conduit.

According to a second aspect of the present application, there is provided an electric device comprising the battery of the above embodiment, the battery being configured to provide electric energy.

According to a third aspect of the present application, there is provided a method of manufacturing a battery, comprising:

providing a battery cell, wherein the battery cell is provided with a pressure relief mechanism, and the pressure relief mechanism is used for actuating to relieve the internal pressure when the internal pressure or the temperature of the battery cell reaches a threshold value;

providing a manifold conduit for containing a fire-fighting medium;

communicating a fire fighting conduit with the manifold conduit to deliver the fire fighting medium to the fire fighting conduit, and the fire fighting conduit is configured to expel the fire fighting medium toward the battery cell upon actuation of the pressure relief mechanism;

the two ends of the fire fighting pipeline are respectively a first end part and a second end part, the first end part is communicated with the collecting pipeline, so that the fire fighting medium enters the fire fighting pipeline through the first end part, and the second end part is arranged in a closed mode.

According to a fourth aspect of the present application, there is provided an apparatus for manufacturing a battery, comprising:

the device comprises a first device and a second device, wherein the first device is used for providing a single battery, the single battery is provided with a pressure relief mechanism, and the pressure relief mechanism is used for actuating to release the internal pressure when the internal pressure or the temperature of the single battery reaches a threshold value;

a second means for providing a manifold for containing a fire-fighting medium;

a third device for communicating a fire conduit with the manifold to deliver the fire-fighting medium to the fire conduit, the fire conduit configured to expel the fire-fighting medium toward the battery cell upon actuation of the pressure relief mechanism;

the fire fighting pipeline comprises a fire fighting pipeline body, a first collecting pipe and a second collecting pipe, wherein the first collecting pipe is used for collecting fire fighting medium, the second collecting pipe is used for collecting fire fighting medium, and the third collecting pipe is used for connecting the first collecting pipe with the second collecting pipe.

According to the battery that this application embodiment provided, on the one hand, through setting up the mass flow pipeline, can hold the fire control medium in the mass flow pipeline, first end and mass flow pipeline intercommunication through the fire control pipeline can carry the fire control medium to the fire control pipeline when needs fire control, not only can realize the effect of fire control, when pressure release mechanism actuates, is favorable to the destruction of fire control pipeline moreover to improve the ageing of fire control. On the other hand, the second end through fire pipeline seals the setting, can prevent the flow of fire control medium in the fire pipeline when pressure relief mechanism does not actuate to can reduce the inside and outside difference in temperature of fire pipeline, reduce the formation of the comdenstion water in the fire pipeline pipe wall outside, with the problem of the single short circuit of battery that the solution comdenstion water leads to, thereby can prolong the life of battery.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1-A is a schematic structural diagram of an electrical device according to an embodiment of the present disclosure;

FIG. 1-B is a schematic diagram of a battery according to an embodiment of the present disclosure;

fig. 1-C is a schematic structural view of a battery module according to an embodiment of the present disclosure;

fig. 1-D is a schematic structural diagram of a battery cell according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of the inside of a battery case according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a manifold and fire fighting pipe according to an embodiment of the present application;

FIG. 4 is an exploded view of a manifold and fire fighting pipe according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a location configuration of a fire protection system in a battery according to an embodiment of the present disclosure;

FIG. 6 is a top view of a fire protection system of an embodiment of the present application;

FIG. 7 is a schematic view of a manifold connection according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a support member according to an embodiment of the present disclosure;

FIG. 9 is a partial front view of one manifold pipe connection of an embodiment of the present application;

FIG. 10 is a partial schematic view of one manifold pipe connection according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a position limiting element according to an embodiment of the present application;

fig. 12 is a flow chart of a method of making a battery according to an embodiment of the present application;

fig. 13 is a block diagram of an apparatus for manufacturing a battery according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative of the present application, and are not intended to limit the scope of the present application, and therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the description of the figures are intended to cover non-exclusive inclusions.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Furthermore, the terms "first," "second," and the like in the description and claims of the present application or in the above-described drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential order, and may explicitly or implicitly include one or more of the features.

In the description of the present application, unless otherwise specified, "plurality" means two or more (including two), and similarly, "plural" means two or more (including two).

In the description of the present application, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., "connected" or "connected" of a mechanical structure may refer to a physical connection, e.g., a physical connection may be a fixed connection, e.g., a fixed connection by a fastener, such as a screw, bolt, or other fastener; the physical connection can also be a detachable connection, such as a mutual snap-fit or snap-fit connection; the physical connection may also be an integral connection, for example, a connection made by welding, gluing or integrally forming the connection. "connected" or "connected" of circuit structures may mean not only physically connected but also electrically connected or signal-connected, for example, directly connected, i.e., physically connected, or indirectly connected through at least one intervening component, as long as the circuits are in communication, or communication between the interiors of two components; signal connection may refer to signal connection through a medium, such as radio waves, in addition to signal connection through circuitry. Specific meanings of the above terms in the embodiments of the present application can be understood as specific cases by those of ordinary skill in the art.

In order to clearly describe the respective orientations in the following embodiments, terms of orientation may be used, for example, directions of the respective orientations of the battery are defined as a coordinate system in fig. 1-D, an X direction denotes a length direction of the battery cell 400, a Y direction is perpendicular to the X direction in a horizontal plane, denotes a width direction of the battery cell 400, and a Z direction is perpendicular to the X direction and the Y direction, and denotes a height direction of the battery. Further, the expressions of the directions of indication such as the X direction, the Y direction, and the Z direction described above for explaining the operation and configuration of each member of the battery of the present embodiment are not absolute but relative, and although these indications are appropriate when each member of the battery is in the position shown in the drawings, when the positions are changed, the directions should be interpreted differently to be changed correspondingly.

With the same orientation in mind, in the description of the present application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship illustrated in the drawings for convenience in describing the present application and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present application.

The rechargeable battery may be referred to as a secondary battery or a power battery, and at present, a relatively widely used rechargeable battery is a lithium battery, for example, but not limited to, a lithium-sulfur battery, a sodium lithium-ion battery, or a magnesium-ion battery. For convenience of description, rechargeable batteries may be collectively referred to herein as batteries.

The safety characteristic of the battery is an important characteristic of the battery, and the safety of the battery needs to be ensured as much as possible when the battery is used or charged.

When the battery cell is subjected to external short circuit, overcharge, needling, flat plate impact and the like, when the battery cell is easily subjected to thermal runaway, emissions are generated inside the battery cell, the emissions contain high-temperature flue gas (serious people generate open fire) and volatile high-temperature electrolyte and other substances, and the emissions can be subjected to thermal diffusion in the emission process, so that other battery cells are subjected to thermal runaway, and even accidents such as explosion can be caused.

Aiming at thermal runaway of a battery monomer, an effective scheme is to arrange a fire-fighting system, and when the thermal runaway of the battery monomer occurs, the fire-fighting system carries out fire fighting so as to prevent or delay explosion or fire of the battery monomer. The fire fighting system is generally provided with a fire fighting pipeline for accommodating a fire fighting medium, the fire fighting pipeline is arranged on the upper portion of the battery cell, and the fire fighting medium can circulate in the fire fighting pipeline. The fire fighting pipeline is provided with a plurality of fluid outlets, and each fluid outlet is arranged opposite to the pressure relief mechanism of the battery monomer. When the battery monomer is out of control thermally, the fire-fighting medium can be sprayed out from the fluid outlet of the fire-fighting pipeline, so that the aim of fire fighting is fulfilled. However, through long-term research, the inventor finds that during the circulation flow of the fire-fighting medium in the fire-fighting system in the fire-fighting pipeline, because the temperature of the fire-fighting medium is lower than that of the battery cell inside the battery, when the temperature of the battery cell changes, particularly rises, the pipe wall of the fire-fighting pipeline is easy to form condensed water on the outer side of the pipe wall due to the internal and external temperature difference. When the amount of the formed condensed water is large, the condensed water is easy to flow to the conductive parts of the battery cells, so that the battery cells are short-circuited and fail, and the normal use of the battery is influenced.

In view of this, the present application provides a battery, which changes the structure of the fire fighting pipeline, so that the fire fighting medium in the fire fighting pipeline cannot flow in a circulating manner, and the formation of condensed water on the outer side of the pipe wall of the fire fighting pipeline is reduced, thereby reducing the risk of short circuit caused by the condensed water. Therefore, the battery of this application not only can in time control the free thermal runaway condition of battery, prevents its further production of heat and high temperature emission, can also reduce the formation of the pipe wall outside comdenstion water of the fire control pipeline among the fire extinguishing system, reduces the risk of the single short circuit because the condensation brought of battery.

The battery in the embodiment of the application can be applied to various electric devices which can provide power sources by electric energy. The electric device can be, but is not limited to, an electric automobile, an electric train, an electric bicycle, a golf cart, an unmanned aerial vehicle, a ship, or the like. The electric device may be a device powered by a battery alone or a hybrid device. The battery provides electric energy for the power consumption device to drive electric actuator through the motor and advance.

For example, as shown in fig. 1-a, which is a schematic structural diagram of an electric device according to an embodiment of the present application, the electric device may be an automobile, the automobile may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or an extended range automobile. The automobile includes a battery 200, a controller 210, and a motor 220. The battery 200 is used to supply power to the controller 210 and the motor 220 as an operation power source and a driving power source of the automobile, for example, the battery 200 is used for a power demand for operation at the start, navigation and running of the automobile. For example, the battery 200 supplies power to the controller 210, the controller 210 controls the battery 200 to supply power to the motor 220, and the motor 220 receives and uses the power of the battery 200 as a driving power source of the automobile, instead of or in part of fuel or natural gas, to provide driving power for the automobile.

In order to achieve higher functions of the battery to meet the use requirement, the battery 200 may include a plurality of battery modules electrically connected to each other, as shown in fig. 1-B, the battery 200 includes a first case 201, a second case 202, and a plurality of battery modules 300, wherein the first case 201 and the second case 202 are fastened to each other, and the plurality of battery modules 300 are arranged in a space surrounded by the first case 201 and the second case 202. In some embodiments, the first case 201 and the second case 202 are hermetically connected.

As shown in fig. 1-C, the battery module 300 includes a plurality of battery cells 400, and the plurality of battery cells 400 may be electrically connected in series, in parallel, or in series-parallel to achieve a larger current or voltage, wherein the series-parallel refers to a combination of series connection and parallel connection. For example, as shown in fig. 1-C, the battery cells 400 may be placed vertically, the height direction of the battery cells 400 coincides with the vertical direction, and a plurality of battery cells 400 are arranged side by side in the width direction; alternatively, the battery cells 400 may be laid flat, the width direction of the battery cells 400 coincides with the vertical direction, and the plurality of battery cells 400 may be stacked in the width direction in at least one layer, each layer including the plurality of battery cells 400 arranged in the length direction.

In order to make it clear to those skilled in the art of the improvement of the present application, the overall structure of the battery cell 400 will be described first.

As shown in fig. 1-D, the battery cell 400 includes a case 40, an electrode assembly 30, and an end cap assembly 10, the end cap assembly 10 includes an end cap plate 10', the end cap plate 10' is connected (e.g., welded) to the case 40 to form a housing of the battery cell 400, the electrode assembly 30 is disposed in the case 40, and the case 40 is filled with an electrolyte. The battery cell 400 may have a cubic shape, a rectangular parallelepiped shape, or a cylindrical shape.

The electrode assembly 30 may be provided in a single or multiple number according to actual use requirements. As shown in fig. 1-D, at least two independently wound electrode assemblies 30 may also be provided within the cell. The electrode assembly 30 may form the main body part by winding or stacking a first pole piece, a second pole piece, and a separator between the adjacent first and second pole pieces together, wherein the separator is an insulator between the adjacent first and second pole pieces. In this embodiment, the first pole piece is exemplarily described as a positive pole piece, and the second pole piece is a negative pole piece. The positive active material is coated on the coating region of the positive electrode tab, and the negative active material is coated on the coating region of the negative electrode tab. A plurality of uncoated regions extending from the coated region of the body portion are laminated as tabs. The electrode assembly 30 includes two tabs 301, i.e., a positive electrode tab and a negative electrode tab. The positive tab extends from the coated area of the positive pole piece and the negative tab extends from the coated area of the negative pole piece.

The end cap assembly 10 is disposed on top of the electrode assembly 30, and as shown in fig. 1-D, the end cap assembly 10 includes an end cap plate 10 'and two electrode terminals 5, the two electrode terminals 5 are a positive electrode terminal and a negative electrode terminal, respectively, one connecting member 20 is disposed corresponding to each electrode terminal 5, and the connecting member 20 is located between the end cap plate 10' and the electrode assembly 30.

For example, a tab 301 of the electrode assembly 30 is located at the top in fig. 1-D, and a positive tab is connected to a positive terminal through one connecting member 20, and a negative tab is connected to a negative terminal through the other connecting member 20. Alternatively, the battery cell 400 may include two end cap assemblies 10 disposed at both ends of the case 40, respectively, and one electrode terminal 5 is disposed on each of the end cap assemblies 10.

The end cover plate 10' may further be provided with an explosion-proof member, so that when too much gas is in the battery cell 400, the gas in the battery cell 400 is released in time to avoid explosion.

The end cover plate 10 'is provided with an exhaust hole which can be arranged at the middle position of the end cover plate 10' along the length direction. The explosion-proof component comprises a pressure relief mechanism 6, the pressure relief mechanism 6 is arranged on the exhaust hole, the pressure relief mechanism 6 is hermetically arranged on the exhaust hole in a normal state, when the single battery 400 expands to enable the air pressure in the shell to rise to exceed a preset value, the pressure relief mechanism 6 is actuated to be opened, and the air is released outwards through the pressure relief mechanism 6.

The pressure relief mechanism 6 refers to an element or a component that can be activated to release internal pressure and/or internal substance when the internal pressure or internal temperature of the battery cell 400 reaches a predetermined threshold. The pressure relief mechanism 6 may specifically take the form of, for example, an explosion-proof valve, an air valve, a pressure relief valve, or a safety valve, and may specifically take the form of a pressure-sensitive or temperature-sensitive element or configuration, that is, when the internal pressure or temperature of the battery cell 400 reaches a predetermined threshold value, the pressure relief mechanism 6 performs an action or a weak structure provided in the pressure relief mechanism 6 is broken, thereby forming an opening or a passage through which the internal pressure can be released. The threshold referred to in this application may be a pressure threshold or a temperature threshold, and the design of the threshold may be different according to design requirements, for example, the threshold may be designed or determined according to an internal pressure or an internal temperature value of the battery cell 400, which is considered to be at risk of danger or runaway. Also, the threshold may depend on the materials used for one or more of the positive electrode tab, the negative electrode tab, the electrolyte, and the separator in the battery cell 400, for example.

The "actuation" referred to in this application means that the pressure relief mechanism 6 is activated or activated to a state such that the internal pressure of the battery cell 400 is relieved. The actions generated by the pressure relief mechanism 6 may include, but are not limited to: at least a portion of the pressure relief mechanism 6 ruptures, fractures, is torn or opened, or the like. When the pressure relief mechanism 6 is activated, the high-temperature and high-pressure substance inside the battery cell 400 is discharged as an exhaust from the activated portion. In this way, the battery cell 400 can be vented under controlled pressure or temperature, thereby avoiding potentially more serious accidents. Emissions from the battery cell 400 referred to in this application include, but are not limited to: electrolyte, dissolved or split positive and negative pole pieces, fragments of a separation film, high-temperature and high-pressure gas generated by reaction, flame and the like. The high-temperature and high-pressure exhaust is exhausted toward the direction of the battery cell 400 in which the pressure relief mechanism 6 is provided, and may be more specifically exhausted in the direction toward the region where the pressure relief mechanism 6 is actuated, and the power and destructive power of such exhaust may be large, and may even be sufficient to break through one or more structures in that direction.

In some embodiments, as shown in fig. 1-D, the end cap plate 10 'is provided with a through hole for injecting an electrolyte into the battery cell 400, and the through hole may be a circular hole, an elliptical hole, a polygonal hole, or another hole, and may extend in the height direction of the end cap plate 10'. The end cover plate 10' is provided with a liquid injection member 2 for sealing the through hole.

As shown in fig. 2, the battery 200 provided in the embodiment of the present application includes a battery cell 400, a current collecting pipe 500, and a fire fighting pipe 600, wherein, as described above, a pressure relief mechanism 6 is disposed on the battery cell 400, and the pressure relief mechanism 6 is configured to be actuated to relieve internal pressure when the internal pressure or temperature of the battery cell 400 reaches a threshold value, so as to prevent accidents such as explosion of the battery cell 400.

In the embodiment, the collecting pipe 500 is used to contain the fire-fighting medium to supply the fire-fighting pipe 600 with the fire-fighting medium when the fire-fighting pipe 600 is needed. The fire fighting pipe 600 is communicated with the collecting pipe 500 to deliver the fire fighting medium to the fire fighting pipe 600, and the fire fighting pipe 600 is configured to discharge the fire fighting medium toward the battery cells 400 when the pressure relief mechanism 6 is braked, so as to achieve the purpose of fire fighting, so as to prevent or delay the explosion or fire of the battery cells 400.

As shown in fig. 3 and 4, in the embodiment of the present application, the fire fighting pipe 600 has a first end 610 and a second end 620 at two ends, respectively, and the first end 610 is used for communicating with the collecting pipe 500, so that the fire fighting medium enters the fire fighting pipe 600 through the first end 610; the second end 620 is sealed, so that when the pressure relief mechanism 6 is not actuated, the fire-fighting medium entering the fire-fighting pipeline 600 cannot flow circularly in the fire-fighting pipeline 600, thereby avoiding temperature reduction of the pipe wall of the fire-fighting pipeline 600 caused by circular flow of the fire-fighting medium, and thus, condensed water is not easily formed on the pipe wall of the fire-fighting pipeline 600, and the probability of short circuit of the single battery 400 caused by the condensed water can be reduced.

In the embodiment of the present application, through sealing the second end 620 of the fire fighting pipeline 600, the fire fighting medium circulation flow in the fire fighting pipeline 600 when the pressure relief mechanism 6 is not actuated can be prevented, thereby the pipe wall of the fire fighting pipeline 600 can be cooled at the in-process of circulation flow by the fire fighting medium, namely, the temperature of the pipe wall of the fire fighting pipeline 600 is reduced, thereby the temperature of the pipe wall of the fire fighting pipeline 600 is basically consistent with the temperature inside the battery, therefore, too much condensed water is not easily formed on the pipe wall of the fire fighting pipeline 600, thereby the problem of short circuit of the battery cell 400 caused by the condensed water can be solved, and the service life of the battery 200 is prolonged.

In the embodiment of the present application, by accommodating the fire-fighting medium in the collecting pipe 500, the collecting pipe 500 is communicated with the first end 610 of the fire-fighting pipe 600, when the fire-fighting pipe 600 needs to use the fire-fighting medium, for example, when the pressure relief mechanism 6 is activated and the fire-fighting medium in the fire-fighting pipe 600 needs to be discharged toward the battery cell 400, the fire-fighting medium can flow to the fire-fighting pipe 600 through the collecting pipe 500 for fire-fighting.

It should be noted that, because of the arrangement of the collecting pipe 500, there is no fire-fighting medium in the fire-fighting pipe 600 at the beginning, which not only solves the problem of condensed water formed on the pipe wall, but also facilitates reducing the internal pressure of the fire-fighting pipe 600, so that when the pressure relief mechanism 6 is actuated, the fire-fighting pipe 600 is more easily damaged, so as to facilitate the timely outflow of the fire-fighting medium and improve the timeliness of fire fighting.

In practical applications, when the fire fighting pipe 600 is damaged, the pressure inside the fire fighting pipe 600 is released, and at this time, the fire fighting medium in the collecting pipe 500 quickly flows toward the fire fighting pipe 600, so as to perform a fire fighting function on the battery cells 400.

In the present embodiment, a gas of a predetermined pressure may be introduced into the fire fighting pipe 600 when the fire fighting pipe 600 is installed, or the fire fighting pipe 600 may be gravitationally higher than the collecting pipe 500 to block the fire fighting medium in the collecting pipe 500 when the pressure relief mechanism 6 is not activated, so that the fire fighting medium is mainly concentrated in the collecting pipe 500. When no fire-fighting medium exists in the fire-fighting pipeline 600, the fire-fighting pipeline 600 is damaged by the discharged discharge materials in the battery cells 400, timely fire fighting is facilitated, and accidents are reduced.

In this embodiment, by introducing a gas with a predetermined pressure into the fire fighting pipeline 600 as described above, or by setting the fire fighting pipeline 600 higher than the collecting pipe 500 in the gravity direction, when the fire fighting pipeline 600 is damaged, a fire fighting medium can be delivered to the fire fighting pipeline 600 to satisfy the fire fighting requirement.

In practical applications, the gas with the preset pressure may be an inert gas such as nitrogen. The preset pressure may be a pressure at which the fire fighting medium is exactly concentrated in the collecting pipe 500, and the specific pressure is not particularly limited in the embodiment of the present application.

It should be noted that the initial state of the fire fighting pipeline 600 is not strict without any fire fighting medium, and in practical application, the effect of being beneficial to destruction can be achieved as long as the fire fighting medium in the fire fighting pipeline 600 is less.

In the embodiment of the present application, as shown in fig. 4, when the fire fighting pipeline 600 is disposed higher than the collecting pipeline 500 in the gravity direction, the first end portion 610 of the fire fighting pipeline 600 needs to be bent to be connected with the collecting pipeline 500, and a specific bending angle may be set according to actual needs, which is not particularly limited in the embodiment of the present application.

According to battery 200 that this application embodiment provided, on the one hand, through setting up mass flow pipeline 500, can hold the fire-fighting medium in mass flow pipeline 500, first end 610 through fire-fighting pipeline 600 communicates with mass flow pipeline 500, when needs fire control, can carry the fire-fighting medium to fire-fighting pipeline 600, not only can realize the effect of fire control, when pressure relief mechanism 6 actuates moreover, is favorable to the destruction of fire-fighting pipeline 600 to improve the ageing of fire control. On the other hand, seals the setting through second end 620 of fire pipeline 600, can prevent the circulation flow of fire-fighting medium in fire pipeline 600 when pressure relief mechanism 6 does not actuate to can reduce the inside and outside difference in temperature of fire pipeline 600, reduce the formation of the comdenstion water in the fire pipeline 600 pipe wall outside, with the problem of the battery monomer 400 short circuit that the comdenstion water leads to of solving, thereby can prolong battery 200's life.

In practical applications, the fire-fighting medium may be a liquid fire-fighting medium or a gas fire-fighting medium, such as water, carbon dioxide, nitrogen or other fire-retardant liquid, gas, etc., and any liquid or gas that can achieve a fire-fighting effect falls within the scope of the embodiments of the present application.

In the embodiment of the present application, the collecting pipe 500 and the fire fighting pipe 600 are both elongated pipes, and the cross-sectional shapes of the collecting pipe 500 and the fire fighting pipe 600 may be square, circular, semicircular, or a polygon formed by combining the above shapes, and the embodiment of the present application is not particularly limited thereto. The size of the collecting duct 500 and the fire fighting duct 600 may be determined according to the size of the actual battery 200, and the embodiment of the present application is not particularly limited thereto.

In practice, the second end 620 may be closed in a variety of ways, such as directly integrating the second end 620 with the main portion of the fire conduit 600, so that the fire conduit 600 is open only at the first end 610.

In the embodiment of the present application, as shown in fig. 4, the second end 620 of the fire fighting pipe 600 is closed by a first closing cap 621.

In this application embodiment, seal second end 620 through first closing cap 621, when playing the effect of sealing second end 620, can also be favorable to clearing up the inside remaining material of fire-fighting pipeline 600, prevent that the residue from thickening the pipe wall of fire-fighting pipeline 600, and then in the time of fire control, influence the timely destruction of fire-fighting pipeline 600.

In practical applications, the first sealing cover 621 may have various structural forms, and may be easily detached while sealing the second end 620, and this is not particularly limited in the embodiment of the present application.

Exemplarily, in the present embodiment, the second end 620 has an opening, the first closing cap 621 includes an end wall and a side wall connected to each other, the end wall is used for closing the opening, the side wall is disposed around the periphery of the opening, and the side wall is used for sealing bonding with the tube wall of the second end 620 to close the opening, wherein the sealing bonding may be welding or bonding.

The embodiment of the present application can block the fire fighting medium in the fire fighting pipeline 600 when the pressure relief mechanism 6 is not actuated by providing the first closing cap 621 including the connected end wall and side wall and blocking the opening through the end wall. Through the lateral wall around the periphery setting of open-ended to with the sealed combination of pipe wall of second end 620, can reach the purpose of closed opening, thereby realize the closed setting to second end 620, prevent the circulation flow of fire control medium.

In the present embodiment, the fire fighting pipe 600 is configured to be damaged by the emissions from the battery cell 400 when the pressure relief mechanism 6 is actuated, so that the fire fighting medium is discharged and enters the inside of the battery cell 400 via the pressure relief mechanism 6. Therefore, when the battery 200 breaks down and the air pressure inside the battery cell 400 rises to exceed the preset value, so that when the high-temperature and high-pressure substance inside the battery cell 400 is discharged from the actuating part of the pressure relief mechanism 6 as a discharge, the part of the fire fighting pipeline 600 opposite to the pressure relief mechanism 6 is damaged by the high-temperature and high-pressure discharge, a fire fighting medium can flow out in time, and the fire fighting medium flows into the battery cell 400 through the pressure relief mechanism 6, so that the fire fighting is carried out inside the battery cell 400. In some embodiments, the discharge of fire-fighting medium from fire fighting pipeline 600 may also be controlled by switching valves.

In the embodiment of the present application, by destroying the fire fighting pipe 600 by means of the high-temperature and high-pressure exhaust ejected from the inside of the battery cell 400, for example, the destruction may be meltthrough, so that precise fire fighting of the faulty battery cell 400 may be achieved. Since only the part of the fire fighting pipeline 600 opposite to the faulty battery cell 400 is damaged to form the damage port, the fire fighting medium can be made to flow out toward the part in a concentrated manner, so as to achieve better fire fighting effect.

In practical application, because only part of the fire-fighting medium discharged from the fire-fighting pipeline 600 can enter the battery cell 400 from the pressure relief mechanism 6, therefore, the utilization rate of the fire-fighting medium can be improved in the above-mentioned accurate fire-fighting mode of the embodiment of the application, and a better fire-fighting effect is achieved.

In the embodiment of the present application, in order to facilitate the fire fighting pipe 600 to be broken to form a breaking port, the fire fighting pipe 600 has a weak portion for being broken by the emissions when the pressure relief mechanism 6 is actuated, thereby facilitating the discharge of the fire fighting medium from the weak portion for the purpose of fire fighting.

In the embodiment of the application, the weak part is arranged on the fire fighting pipeline 600, so that high-temperature and high-pressure emissions sprayed out from the inside of the battery cell 400 can damage the fire fighting pipeline 600 more quickly, and the fire fighting timeliness is improved.

In practical applications, the position of the weak portion may be set as needed, for example, the whole side of the fire fighting pipeline 600 close to the battery cells 400 may be set as the weak portion, or only the position opposite to the pressure relief mechanism 6 of each battery cell 400 may be set as the weak portion. In any position, the exhaust material discharged from the inside of the battery cell 400 when the pressure relief mechanism 6 is actuated may be just sprayed on the weak portion.

In the present embodiment, the weakened portion may be structurally weak, for example, the weakened portion may have a thickness thinner than other portions of the fire fighting pipeline 600; alternatively, the weak portion may be a weak material, for example, the weak portion may be a material that is easily damaged by high-temperature and high-pressure discharge discharged from the inside of the battery cell 400; or it may be weaker than the rest of the fire duct 600. The embodiment of the present application is not particularly limited to this.

In practical applications, a plurality of battery cells 400 are usually disposed inside one battery 200, and the plurality of battery cells 400 may be electrically connected in series, parallel or series-parallel to form the battery module 300.

In the embodiment of the present application, a plurality of battery cells 400 are provided as at least two battery modules 300, each battery module 300 includes at least one battery cell 400, and the pressure relief mechanism 6 of the battery cell 400 in each battery module 300 is disposed opposite to one fire fighting pipe 600.

As shown in fig. 5, one battery module 300 corresponds to one fire fighting pipeline 600, and the pressure relief mechanisms 6 of the battery cells 400 inside the battery module 300 are arranged opposite to the same fire fighting pipeline 600, so that fire fighting can be performed on a plurality of battery cells 400 in the same battery module 300 through the same fire fighting pipeline 600, the number of the fire fighting pipelines 600 can be saved, and the cost is saved.

In the embodiment of the present application, at least two battery modules 300 are respectively provided with the fire fighting pipelines 600, and the two fire fighting pipelines 600 can also be communicated with the same collecting pipeline 500, so as to save the number of the collecting pipelines 500, simplify the structure and save the cost.

In practical applications, in order to save space of the battery 200, the current collecting duct 500 may be disposed between two adjacent battery modules 300. For example, as shown in fig. 6, there are seven pairs of battery modules 300, each pair of battery modules 300 being arranged side by side, one battery module 300 for each fire fighting pipe 600, and seven pairs of battery modules 300 for seven pairs of fire fighting pipes 600. Only one collecting pipe 500 is arranged between each pair of battery modules 300, one pair of fire fighting pipes 600 is arranged on two sides of the collecting pipe 500, and seven pairs of fire fighting pipes 600 are arranged on two sides of the collecting pipe 500 at intervals, so that the collecting pipe 500 and the plurality of fire fighting pipes 600 are connected to form a fishbone-shaped structure as shown in fig. 3, wherein the fishbone-shaped structure can be formed by connecting the plurality of fire fighting pipes 600 at intervals on two sides of the collecting pipe 500 respectively, and the fire fighting pipes 600 and the collecting pipe 500 form an included angle, for example, the included angle is 90 degrees, that is, the fire fighting pipes 600 and the collecting pipe 500 are perpendicular to each other. Of course, in some embodiments, multiple fire fighting pipes 600 may be disposed on the same side of the manifold pipe 500.

In this application embodiment, through connecting collecting pipe 500 and a plurality of fire-fighting pipeline 600 into fishbone-shaped structure to be convenient for every fire-fighting pipeline 600 all directly to be connected with collecting pipe 500, when needs fire control, fire-fighting medium can directly supply fire-fighting pipeline 600 from collecting pipe 500, when improving the ageing nature of fire control, can also practice thrift fire-fighting medium.

The arrangement direction of the collecting duct 500 and the fire fighting duct 600 will be described with respect to the arrangement direction of the plurality of battery cells 400 in the battery module 300.

In the embodiment of the present application, one battery module 300 includes a plurality of battery cells 400 arranged in a predetermined direction, and the length direction of the fire fighting pipe 600 coincides with the arrangement direction of the plurality of battery cells 400. So that the pressure relief mechanism 6 of each battery cell 400 is disposed opposite to the fire fighting pipe 600, i.e., one fire fighting pipe 600 provides fire protection for a plurality of battery cells 400 in one battery module 300.

In the above embodiment, the length direction of the fire fighting pipeline 600 is the same as the arrangement direction of the plurality of battery cells 400, but the collecting pipeline 500 is at a predetermined angle with respect to the arrangement direction of the plurality of battery cells 400, that is, the length direction of the collecting pipeline 500 is at a predetermined angle with respect to the length direction of the fire fighting pipeline 600.

In practical applications, the preset included angle may be different angles such as 90 degrees and 88 degrees. In the embodiment of the present application, as shown in fig. 3, the fire fighting pipe 600 is perpendicular to the collecting pipe 500, and the predetermined included angle is 90 degrees.

In practical application, because fire-fighting pipeline 600 is connected in the both sides of mass flow pipeline 500, mass flow pipeline 500 can set to simple rectangular shape structure, need not to buckle the processing, and processing is simple convenient.

In the embodiment of the present application, the collecting pipe 500 has a third end 510 and a fourth end 520 at two ends, respectively, as shown in fig. 4 and 5, the third end 510 is used for inputting fire-fighting medium, and the fourth end 520 is closed.

In practice, the third end 510 may be connected to a fire box (not shown) storing a fire-fighting medium to introduce the fire-fighting medium into the manifold 500, and may be disconnected from the fire box after the manifold 500 is filled with the fire-fighting medium. The fire box is generally disposed outside the battery 200 and maintains a connection state with the collecting pipe 500 so as to supplement the fire-fighting medium to the collecting pipe 500 in time when the fire-fighting medium in the collecting pipe 500 flows into the fire-fighting pipe 600.

In another embodiment of the present application, the third end 510 may also be in communication with a thermal management component, wherein the thermal management component is generally disposed at the bottom of the battery cell 400 and is used for adjusting the temperature of the battery cell 400, for example, the thermal management component is used for cooling the battery cell 400 or heating the battery cell 400 to a preset temperature. In the case of cooling or temperature reduction of the battery cells 400, the thermal management member is used to contain a cooling fluid to reduce the temperature of the plurality of battery cells 400, and at this time, the thermal management member may also be referred to as a cooling member, a cooling system, a cooling plate, or the like, and the contained fluid may also be referred to as a cooling medium or a cooling fluid, and more specifically, may be referred to as a cooling liquid or a cooling gas. In addition, the thermal management component may also be used to heat the plurality of battery cells 400 to increase the temperature, which is not limited in the embodiment of the present application. The thermal management component may be in communication with the fire hose, and the thermal management component utilizes a fire-fighting medium provided by the fire hose to regulate the temperature of the battery cells 400. For example, the thermal management member and the fire box may form a circulation loop, and a fire-fighting medium provided from the fire box circulates between the thermal management member and the fire box, and the thermal management member performs temperature regulation on the battery cell 400 using the circulating fire-fighting medium. For example, the third end 510 may communicate only with the thermal management component to receive the fire-fighting medium provided by the thermal management component, i.e., the fire-fighting tank provides the fire-fighting medium to the thermal management component, which in turn provides the fire-fighting medium to the third end 510, which is fed into the manifold 500 through the third end 510.

In another embodiment of the present application, the third end 510, the thermal management component, and the fire box may be tee-jointed, i.e., the fire box may provide fire-fighting media to the third end 510 and the thermal management component simultaneously. The fire box and thermal management components may or may not form a circulation loop.

This application embodiment is through sealing the setting with fourth end 520, can play the effect that prevents to enter into the inside fire control medium circulation flow of mass flow pipeline 500 when pressure relief mechanism 6 is not actuated equally to can avoid the fire control medium to reduce the temperature of mass flow pipeline 500's pipe wall through the heat exchange at the circulation flow in-process, similar with fire control pipeline 600, also be difficult for forming the comdenstion water on the pipe wall of mass flow pipeline 500, and then can reduce the probability that the battery cell 400 that the comdenstion water arouses takes place the short circuit.

Moreover, the fourth end 520 of the collecting pipe 500 is closed, so that when the fire-fighting medium sealed in the collecting pipe 500 flows into the fire-fighting pipe 600, the fire-fighting medium does not circulate between the collecting pipe 500 and the fire-fighting pipe 600, and the formation of condensed water on the pipe wall of the fire-fighting pipe 600 can be further reduced.

In practical applications, the fourth end 520 may be sealed in various ways, for example, directly integrally forming the fourth end 520 with the main body of the collecting pipe 500, or sealing the fourth end 520 with a second sealing cap (not shown), for example, welding or bonding the second sealing cap and the fourth end 520.

In practice, the second closure cap may have a variety of configurations, and may serve to seal the fourth end 520 while also facilitating disassembly, for example, the second closure cap may have the same configuration as the first closure cap 621. The structural form of the second sealing cover is not particularly limited in the embodiments of the present application.

It is further noted that the main portion of the manifold 500 is further provided with a plurality of outlets, each for communicating with the fire fighting pipe 600, so that the fire fighting medium flows into the fire fighting pipe 600 through the outlets.

This application embodiment is through setting up the sealed lid of second at fourth tip 520, when playing the effect of sealing fourth tip 520, still is favorable to clearing up the inside residue of mass flow pipeline 500, prevents that the residue from blockking up the delivery outlet and influencing the flow of fire-fighting medium.

In practice, the manifold 500 and the fire fighting pipe 600 may be secured inside the battery 200 in a variety of ways. The embodiments of the present application are described in detail by way of example only and not by way of exclusive limitation as to the manner in which manifold conduit 500 and fire fighting conduit 600 may be secured, and any manner in which the securement of manifold conduit 500 and fire fighting conduit 600 in a set position may be achieved is within the scope of the present application.

As shown in fig. 7, in the embodiment of the present application, the battery 200 further includes a support member 700, and the support member 700 is used to support the current collecting duct 500 between the same row of adjacent battery modules 300. For example, the battery 200 further includes beams for supporting the battery modules 300 and end plates for fixing the plurality of battery cells 400 into the battery modules 300, for example, the beams are located between adjacent battery modules 300 in the same row, the end plates are located at both ends of the arrangement direction of the plurality of battery cells 400 and the two end plates are connected by a fixing band to combine the plurality of battery cells 400 into the battery modules 300, the support member 700 may be supported on the beams or the end plates, or the beams or the end plates may also be directly used as the support member 700.

As shown in fig. 8, the support member 700 has a support arm 710, and the support arm 710 is configured to be supported on a pipe wall of the manifold pipe 500 facing the battery cell 400 to function as a support for the manifold pipe 500. Taking the orientation of fig. 9 as an example, support arms 710 may limit downward movement of manifold conduit 500.

As shown in fig. 9, the support arms 710 are arranged in pairs for the purpose of securely supporting the manifold 500.

Specifically, as shown in fig. 7, a pair of supports 700 may be provided, with one support arm 710 provided on each support 700, thereby forming a pair of support arms 710. Also, a plurality of pairs of support arms 710 may be spaced along the length of the manifold conduit 500 to support the manifold conduit 500 at a set height, for example, by a plurality of pairs of support arms 710 to provide a horizontal arrangement of the manifold conduit 500.

In the embodiment of the present application, as shown in fig. 9, the supporting arms 710 are arranged in pairs, the supporting arms 710 in pairs are arranged at intervals, the pipe wall of the collecting pipe 500 facing the battery cell 400 is provided with a protruding portion 530, the protruding portion 530 is arranged to be inserted between the supporting arms 710 in pairs, and the pipe walls on two sides of the protruding portion 530 are respectively supported by the supporting arms 710 in pairs. In another embodiment of the present application, the supporting arms 710 may be directly supported on the tube walls on both sides of the protruding portion 530 without being clamped on both sides of the protruding portion 530, or the supporting arms 710 may be clamped on both sides of the protruding portion 530 and supported on the tube walls on both sides of the protruding portion 530. In another embodiment of the present application, boss 530 is formed by manifold 500 toward the wall of battery cell 400, the nose of boss 530 faces support arm 710, and boss 530 forms a recess in manifold 500 that can receive a fire fighting medium.

By inserting the protrusion 530 between the pair of support arms 710, the stability of the support arms 710 can be improved, and the collecting duct 500 is prevented from sliding on the support arms 710.

In the embodiment of the present application, as shown in fig. 10, the battery 200 further includes: and a stopper 800, the stopper 800 being configured to restrict the current collecting pipe 500 between the adjacent battery modules 300 to restrict the current collecting pipe 500 from moving upward and leftward and rightward.

The limiting member 800 includes a limiting wall 810 and a leg 820 connected to the limiting wall 810; a limiting wall 810 is positioned above the manifold conduit 500 to limit movement of the manifold conduit 500 in a direction away from the battery cells 400, i.e., upward as shown. The legs 820 are used to support the stopper walls 810, and the legs 820 are located at both sides of the collecting pipe 500 to stopper the collecting pipe 500, i.e., the legs 820 are located between the collecting pipe 500 and the battery module 300 to stopper the collecting pipe 500, preventing the collecting pipe 500 from moving in the left and right directions.

As shown in fig. 11, the legs 820 are arranged in pairs, and the pairs of legs 820 are spaced apart, and the collecting pipe 500 is confined between the pairs of legs 820 for the purpose of fixing the collecting pipe 500. Wherein the limiting wall 810 and the leg 820 form an inverted U-shaped structure.

Further, the limiting wall 810 elastically abuts against the pipe wall of the collecting pipe 500, for example, the limiting wall 810 has an arc-shaped portion 811, the arc-shaped portion 811 protrudes toward the collecting pipe 500 to elastically abut against the pipe wall of the collecting pipe 500 to limit the upward movement of the collecting pipe 500, for example, the limiting wall 810 has a hollow structure penetrating through the limiting wall 810 in the middle, the opening of the hollow structure faces the collecting pipe 500, and the arc-shaped portion 811 is disposed in the hollow structure and connected with the limiting wall 810, for example, integrally connected.

Further, the leg 820 is provided with a clamping portion 821, and the clamping portion 821 is convexly provided toward the collecting pipe 500 to limit the collecting pipe 500 and prevent the collecting pipe 500 from moving in the left and right directions.

Specifically, the clamping portion 821 abuts against the pipe wall of the collecting pipe 500 to fix the collecting pipe 500.

In practical applications, the structure of the clamping portion 821 may be various, in the embodiment of the present application, the clamping portion 821 is configured as a cantilever structure, for example, the clamping portion 821 may be an elastic arc-shaped buckle with one end fixed on the leg 820 and the other end suspended, which not only can elastically clamp the collecting pipe 500, but also can facilitate the locking member 800 to be locked on or unlocked from the end plate.

The battery provided by the embodiment of the present application, which jointly limits and fixes the collecting pipe 500 through the supporting member 700 and the limiting member 800, can limit the movement of the collecting pipe 500 in the space, thereby improving the stability of the collecting pipe 500.

On the other hand, the present application further provides an electric device, which includes the above battery 200, and the battery 200 is used for providing electric energy. The specific structural form and the operation principle of the battery 200 have been described in detail in the above embodiments, and the details of this embodiment are not repeated.

To sum up, the power consumption device that this application embodiment provided, through setting up foretell battery, on the one hand, the battery can hold the fire control medium in the mass flow pipeline through setting up the mass flow pipeline, through the first end and the mass flow pipeline intercommunication of fire control pipeline, when needs fire control, can carry the fire control medium to the fire control pipeline, not only can realize the effect of fire control, when pressure release mechanism actuates in addition, is favorable to the destruction of fire control pipeline to can improve the ageing of fire control. On the other hand, the second end of the fire pipeline is sealed, so that the flow of a fire-fighting medium in the fire pipeline can be prevented when the pressure relief mechanism is not actuated, the temperature difference between the inside and the outside of the fire pipeline can be reduced, the formation of condensed water on the outer side of the pipe wall of the fire pipeline is reduced, the problem of short circuit of a battery monomer caused by the condensed water is solved, and the service life of the battery can be prolonged; on the other hand, the fourth end through the mass flow pipeline seals the setting, can prevent the flow of fire control medium in the mass flow pipeline when pressure relief mechanism does not actuate to can reduce the inside and outside difference in temperature of mass flow pipeline, reduce the formation of the comdenstion water in the mass flow pipeline pipe wall outside, with the problem of the single short circuit of battery that further solution comdenstion water leads to, thereby can further prolong the life of battery. In addition, the supporting piece and the limiting piece are used for limiting and fixing the collecting pipe together through the supporting piece and the limiting piece, so that the movement of the collecting pipe in the space can be limited, and the stability of the collecting pipe is improved.

The battery and the electric device according to the embodiments of the present application are described above, and the method and the apparatus for manufacturing the battery according to the embodiments of the present application will be described below, wherein portions not described in detail may be referred to the foregoing embodiments.

On the other hand, embodiments of the present application also provide a method for preparing a battery, as shown in fig. 12, the method for preparing a battery may include the following steps:

step S1210, providing a single battery, wherein the single battery is provided with a pressure relief mechanism, and the pressure relief mechanism is actuated to release internal pressure when the internal pressure or temperature of the single battery reaches a threshold value;

step S1220, providing a collecting pipe for accommodating a fire-fighting medium;

a step S1230 of communicating a fire fighting pipe with the collecting pipe to deliver the fire fighting medium to the fire fighting pipe, and the fire fighting pipe is configured to discharge the fire fighting medium toward the battery cell upon actuation of the pressure relief mechanism;

Referring to the embodiment of the battery 200 portion, it is understood that the pressure relief mechanism 6 is required to be formed on the battery cell 400, the fire fighting pipe 600 may be fixed at a position opposite to the pressure relief mechanism 6, and the collecting pipe 500 may be fixed between the battery modules 300.

As can be seen with reference to the embodiment of the battery 200 part, the battery 200 also comprises other components which can be manufactured by corresponding methods to finally obtain the desired battery 200. In practical applications, any method that can manufacture the related components and connect the related components falls within the protection scope of the embodiments of the present application, which are not described in detail herein.

In another aspect, the present application also provides an apparatus for manufacturing a battery, and referring to fig. 13, a block diagram of an apparatus for manufacturing a battery according to an embodiment of the present application is shown. As shown in fig. 13, the apparatus 1300 for manufacturing a battery may include:

a first device 1310, which may be used to provide a battery cell, wherein the battery cell is provided with a pressure relief mechanism, which is activated to relieve an internal pressure or temperature of the battery cell when the internal pressure or temperature reaches a threshold value;

a second device 1320 that may be used to provide a manifold for holding a fire-fighting medium;

a third device 1330 may be used to communicate a fire fighting conduit with the manifold conduit to deliver the fire fighting medium to the fire fighting conduit, and the fire fighting conduit is configured to expel the fire fighting medium toward the battery cell upon actuation of the pressure relief mechanism;

wherein the fire fighting pipe has a first end and a second end at each end, the third device 1330 can be used to communicate the first end with the collecting pipe so that the fire fighting medium enters the fire fighting pipe through the first end, and the third device 1330 can also be used to close the second end.

The details of each battery manufacturing apparatus are described in detail in the corresponding battery embodiment, and therefore are not described herein again.

The above-mentioned subject matters and features of the embodiments of the present application can be referred to each other, and those skilled in the art can flexibly combine technical features of different embodiments to form further embodiments when the structure allows.

The battery, the electric device, the method for preparing the battery and the equipment provided by the application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are merely provided to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. A battery, comprising:

the battery cell is provided with a pressure relief mechanism, and the pressure relief mechanism is used for actuating to relieve the internal pressure when the internal pressure or the temperature of the battery cell reaches a threshold value;

the collecting pipe is used for containing a fire fighting medium;

a fire conduit in communication with the manifold conduit to deliver the fire-fighting medium thereto, the fire conduit configured to expel the fire-fighting medium toward the battery cell upon actuation of the pressure relief mechanism;

the two ends of the fire fighting pipeline are respectively a first end and a second end, the first end is used for being communicated with the collecting pipeline so that the fire fighting medium enters the fire fighting pipeline through the first end, and the second end is arranged in a closed mode.

2. The battery of claim 1, wherein the second end of the fire conduit is closed by a first closure cap.

3. The cell defined in claim 2, wherein the second end portion has an opening, the first closure cap includes an end wall and a side wall connected, the end wall for closing off the opening, the side wall disposed around a periphery of the opening, and the side wall for sealing engagement with a wall of the second end portion to close off the opening.

4. The battery of any of claims 1-3, wherein the fire conduit is configured to be damaged by emissions from the battery cell upon actuation of the pressure relief mechanism to allow the fire-fighting medium to exit and enter the battery cell interior via the pressure relief mechanism.

5. The battery of claim 4, wherein the fire conduit has a weakened portion for being damaged by the emissions upon actuation of the pressure relief mechanism.

6. The battery of claim 1, wherein the fire fighting pipe is provided in plurality, and a plurality of the fire fighting pipes are provided at intervals on one side or both sides of the collecting pipe;

the battery monomer sets up to a plurality ofly, and is a plurality of battery monomer is set up to two at least battery module, every battery module includes at least one battery monomer, every in the battery module battery monomer the pressure relief mechanism all with one the fire control pipeline sets up relatively.

7. The battery according to claim 6, wherein the battery module includes a plurality of the battery cells arranged in a predetermined direction, and a length direction of the fire fighting pipe coincides with an arrangement direction of the plurality of the battery cells.

8. The battery of claim 7, wherein the length direction of the current collecting pipe is at a predetermined angle to the arrangement direction.

9. The battery according to claim 1, wherein the two ends of the current collecting pipe are respectively a third end and a fourth end, the third end is used for inputting the fire-fighting medium, and the fourth end is closed.

10. The battery of claim 9 wherein the fourth end of the current collecting conduit is closed by a second closure cap.

11. The battery of claim 1, wherein the fire conduit is gravitationally higher than the manifold conduit to plug the fire-fighting medium within the manifold conduit when the pressure relief mechanism is not activated.

12. The battery according to claim 1, further comprising: a support for supporting the manifold.

13. The battery of claim 12, wherein the support has a support arm configured to be supported on a wall of the manifold facing the battery cells.

14. The battery according to claim 13, wherein the supporting arms are arranged in pairs, the supporting arms are arranged at intervals, the manifold pipe is provided with a protrusion portion on the pipe wall facing the battery cell, the protrusion portion is arranged to be inserted between the supporting arms in pairs, and two sides of the protrusion portion are respectively supported by the supporting arms in pairs.

15. The battery according to claim 6, further comprising: a stopper configured to restrict the current collecting duct between the adjacent battery modules.

16. The battery of claim 15, wherein the retaining member comprises a retaining wall and a leg connected to the retaining wall;

the limiting wall is positioned above the current collecting pipeline and used for limiting the current collecting pipeline to move in the direction far away from the battery monomer;

the support legs are used for supporting the limiting walls, and the support legs are located between the current collecting pipes and the battery modules so as to limit the current collecting pipes.

17. The battery of claim 16 wherein said legs are arranged in pairs and said pairs of legs are spaced apart, said current collecting conduit being confined between said pairs of legs.

18. The battery of claim 16 or 17, wherein the retaining wall abuts against a wall of the manifold.

19. The battery of claim 18, wherein the retaining wall has an arcuate portion that projects toward the manifold to abut a wall of the manifold.

20. The battery of claim 16, wherein the legs are provided with a grip portion that is convexly disposed toward the current collecting duct to restrain the current collecting duct.

21. The battery of claim 20, wherein the clip abuts against a wall of the manifold.

22. The battery according to claim 20 or 21, wherein the clamping portion is configured as a cantilever structure.

23. The battery according to claim 1, further comprising: a thermal management component to regulate a temperature of the battery cells, the thermal management component configured to communicate with the manifold conduit to deliver the fire-fighting medium to the manifold conduit.

24. An electrical device comprising a battery as claimed in any one of claims 1 to 23 for providing electrical energy.

25. A method of making a battery comprising:

providing a manifold conduit for containing a fire-fighting medium;

26. An apparatus for preparing a battery, comprising:

a second means for providing a manifold for containing a fire-fighting medium;