Battery and electric device

Abstract

Embodiments of the present application provide a battery and an electric device. The battery comprises a first layer of battery cells, a second layer of battery cells, and an isolation component. In a first direction, the isolation portion is located between the first layer of battery cells and the second layer of battery cells. The first layer of battery cells comprise a plurality of first battery cells; and a first pressure relief mechanism is provided on the side of the first battery cells facing the isolation component. The second layer of battery cells comprise a plurality of second battery cells; and a second pressure relief mechanism is provided on the side of the second battery cells facing the isolation component. A first collection cavity is formed in the isolation component. The isolation component has a first surface facing the first layer of battery cells and a second surface facing the second layer of battery cells; a first through hole communicated with the first collection cavity is formed in the first surface; and a second through hole communicated with the first collection cavity is formed in the second surface. The technical solution provided by the present application can improve the energy density of the battery.

Description

Battery and electric device Cross-reference to related applications

[0001] The present application claims priority to Chinese Patent Application CN202410635975.5, filed on May 21, 2024, entitled "Battery and electric device", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of batteries, in particular to a battery and an electric device. BACKGROUND

[0003] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy-saving and environmentally friendly advantages. For electric vehicles, battery technology is an important factor for their development.

[0004] In the manufacturing process of the battery, the energy density of the battery is a problem that cannot be ignored. Therefore, how to improve the energy density of the battery is a technical problem that needs to be solved in the battery technology. SUMMARY

[0005] The present application provides a battery and an electric device, which can improve the energy density of the battery.

[0006] The present application is achieved by the following technical solutions:

[0007] In a first aspect, the present application provides a battery, which includes a first layer of battery monomers, a second layer of battery monomers, and a separation component. The first layer of battery monomers and the second layer of battery monomers are arranged in a stack along a first direction. Along the first direction, the separation component is located between the first layer of battery monomers and the second layer of battery monomers. The first layer of battery monomers includes a plurality of first battery monomers, and a first pressure relief mechanism is arranged on a side of the first battery monomers facing the separation component. The second layer of battery monomers includes a plurality of second battery monomers, and a second pressure relief mechanism is arranged on a side of the second battery monomers facing the separation component. The separation component has a first collection cavity inside, which is used to collect emissions of the first battery monomers when the first pressure relief mechanism is actuated, and is also used to collect emissions of the second battery monomers when the second pressure relief mechanism is actuated.

[0008] According to the battery of the present application, the first collection cavity is used to collect emissions of the first battery monomers when the first pressure relief mechanism is actuated and / or collect emissions of the second battery monomers when the second pressure relief mechanism is actuated. The emissions released when the first pressure relief mechanism is actuated and the emissions released when the second pressure relief mechanism is actuated share the first collection cavity, which is beneficial to saving space inside the battery and improving the energy density of the battery.

[0009] According to some embodiments of the present application, the isolation component has a first surface facing the first layer of battery monomers and a second surface facing the second layer of battery monomers, the first surface is provided with a first through hole communicating with the first collection cavity, the first through hole is correspondingly provided with the first pressure relief mechanism, the second surface is provided with a second through hole communicating with the first collection cavity, and the second through hole is correspondingly provided with the second pressure relief mechanism.

[0010] In the above scheme, the first through hole is correspondingly provided with the first pressure relief mechanism, and the second through hole is correspondingly provided with the second pressure relief mechanism. The arrangement of the first through hole and the second through hole facilitates the collection of the discharge by the first collection cavity, thereby reducing the risk of the discharge short-circuiting the first battery monomer and / or the second battery monomer, and simultaneously facilitating the reduction of the risk of thermal runaway spreading, and facilitating the improvement of the reliability of the battery.

[0011] According to some embodiments of the present application, the isolation component comprises a blocking piece arranged in the first collection cavity; along the first direction, the blocking piece is arranged at intervals with the first through hole and the second through hole, and the projection of the blocking piece covers the first through hole and the second through hole.

[0012] In the above scheme, the blocking piece is arranged in the first collection cavity, and the projection of the blocking piece covers the first through hole and the second through hole. The blocking piece can block the discharge of the first pressure relief mechanism and the discharge of the second pressure relief mechanism, thereby reducing the influence of the discharge of the first pressure relief mechanism on the second battery monomer and the influence of the discharge of the second pressure relief mechanism on the first battery monomer, and improving the reliability of the battery.

[0013] According to some embodiments of the present application, the blocking piece divides the first collection cavity into a first chamber and a second chamber which are independent of each other, the first through hole communicates with the first chamber, and the second through hole communicates with the second chamber.

[0014] In the above scheme, the first chamber and the second chamber are independent of each other, which can further reduce the influence of the discharge of the first pressure relief mechanism on the second battery monomer and the influence of the discharge of the second pressure relief mechanism on the first battery monomer, and improve the reliability of the battery.

[0015] According to some embodiments of the present application, the battery further comprises a box body, the box body comprises two first wall portions oppositely arranged along a second direction, the first layer of battery monomers is arranged between the two first wall portions, the isolation component connects the two first wall portions, and the second direction is perpendicular to the first direction; the inside of the first wall portion is formed with a second collection cavity, and the second collection cavity communicates with the first chamber.

[0016] In the above scheme, the isolation component connects the two first wall portions, the isolation component and the two first wall portions form a space for accommodating the first layer of battery monomers, and the second collection cavity is in communication with the first chamber, so that the exhaust of the first pressure relief mechanism can enter the second collection cavity through the first chamber, so as to collect the exhaust of the first pressure relief mechanism, reduce the influence of the exhaust on other battery monomers, and improve the reliability of the battery.

[0017] According to some embodiments of the present application, the battery further comprises a third pressure relief mechanism, the third pressure relief mechanism is arranged on at least one of the first wall portions, and the third pressure relief mechanism is used for relieving the exhaust in the second collection cavity.

[0018] In the above scheme, the arrangement of the third pressure relief mechanism facilitates the relief of the exhaust in the second collection cavity when the pressure in the second collection cavity reaches a threshold value, thereby improving the reliability of the battery.

[0019] According to some embodiments of the present application, the isolation component is integrally formed with or welded to the two first wall portions.

[0020] In the above scheme, the isolation component is integrally formed with the two first wall portions, thereby improving the structural strength of the isolation component and the two first wall portions. The isolation component is welded to the two first wall portions, which is relatively low in processing and manufacturing difficulty.

[0021] According to some embodiments of the present application, the box body comprises two second wall portions arranged opposite to each other in the second direction, the second layer of battery monomers is arranged between the two second wall portions, and the isolation component connects the two second wall portions; the inside of the second wall portion is formed with a third collection cavity, and the third collection cavity is in communication with the second chamber.

[0022] In the above scheme, the isolation component connects the two second wall portions, the isolation component and the two second wall portions form a space for accommodating the second layer of battery monomers, and the third collection cavity is in communication with the second chamber, so that the exhaust of the second pressure relief mechanism can enter the third collection cavity through the second chamber, so as to collect the exhaust of the second pressure relief mechanism, reduce the influence of the exhaust on other battery monomers, and improve the reliability of the battery.

[0023] According to some embodiments of the present application, the battery further comprises a fourth pressure relief mechanism, the fourth pressure relief mechanism is arranged on at least one of the second wall portions, and the fourth pressure relief mechanism is used for relieving the exhaust in the third collection cavity.

[0024] In the above scheme, the arrangement of the fourth pressure relief mechanism facilitates the relief of the exhaust in the third collection cavity when the pressure in the third collection cavity reaches a threshold value, thereby improving the reliability of the battery.

[0025] According to some embodiments of the present application, the isolation component is integrally formed with or welded to the two second wall portions.

[0026] In the above scheme, the isolation component is integrally formed with the two second wall portions, improving the structural strength of the isolation component and the two second wall portions. The isolation component is welded to the two second wall portions, and the processing and manufacturing difficulty is low.

[0027] According to some embodiments of the present application, the isolation component includes a first plate body and a second plate body oppositely arranged along the first direction, and the first collection cavity is located between the first plate body and the second plate body; the first plate body includes a first surface and a third surface oppositely arranged along the first direction, and the second plate body includes a second surface and a fourth surface oppositely arranged along the first direction.

[0028] In the above scheme, the first pressure relief mechanism is arranged opposite to the first plate body, the second pressure relief mechanism is arranged opposite to the second plate body, and the first plate body and the second plate body are oppositely arranged along the first direction and define the first collection cavity, which is simple in structure and convenient for processing and manufacturing.

[0029] According to some embodiments of the present application, the blocking piece includes a first flow guide piece having a first end and a second end, the first end is connected to the third surface, and the second end is arranged apart from the first through hole; along the first direction, a projection of the first flow guide piece covers the first through hole.

[0030] In the above scheme, the first end is connected to the third surface, the second end is arranged apart from the first through hole, and the projection of the first flow guide piece covers the first through hole, so that the exhaust entering the first collection cavity through the first through hole can be guided by the first flow guide piece, thereby reducing the risk of the exhaust directly flowing to the second through hole.

[0031] According to some embodiments of the present application, from the first end to the second end, the distance between the first flow guide piece and the third surface gradually increases.

[0032] In the above scheme, from the first end to the second end, the distance between the first flow guide piece and the third surface gradually increases, which facilitates the first flow guide piece to change the flow direction of the exhaust entering the first collection cavity from the first through hole.

[0033] According to some embodiments of the present application, the blocking piece further includes a second flow guide piece having a third end and a fourth end, the third end is connected to the fourth surface, and the fourth end is arranged apart from the second through hole; along the first direction, a projection of the second flow guide piece covers the second through hole.

[0034] In the above scheme, the third end is connected to the fourth surface, the fourth end is arranged apart from the second through hole, and the projection of the second flow guide piece covers the second through hole, so that the exhaust entering the first collection cavity through the second through hole can be guided by the second flow guide piece, thereby reducing the risk of the exhaust directly flowing to the first through hole.

[0035] According to some embodiments of the present application, from the third end to the fourth end, the distance between the second flow guide piece and the fourth surface gradually increases.

[0036] In the above scheme, the distance between the second flow guide and the fourth surface gradually increases from the third end to the fourth end, so that the second flow guide changes the flow direction of the exhaust entering the first collection cavity from the second through hole.

[0037] According to some embodiments of the present application, the battery further comprises a box body, the box body comprising two first side walls oppositely arranged along a second direction, the isolation component connecting the two first side walls, the second direction being perpendicular to the first direction; each first side wall comprising a first wall portion and a second wall portion arranged along the first direction, the first layer of battery monomers being located between the first wall portions of the two first side walls, and the second layer of battery monomers being located between the second wall portions of the two first side walls.

[0038] In the above scheme, the isolation component connects the two first side walls to facilitate fixation of the isolation component; the isolation component and the two first wall portions are connected to form a space for accommodating the first layer of battery monomers to facilitate protection of the first layer of battery monomers; and the isolation component and the two second wall portions are connected to form a space for accommodating the second layer of battery monomers to facilitate protection of the second layer of battery monomers.

[0039] According to some embodiments of the present application, the interior of the first side wall is formed with a fifth collection cavity, the fifth collection cavity being in communication with the first collection cavity.

[0040] In the above scheme, the fifth collection cavity is in communication with the first collection cavity, so that the exhaust in the first collection cavity can flow to the fifth collection cavity, facilitating the accommodation of more exhaust.

[0041] According to some embodiments of the present application, the battery further comprises a fifth pressure relief mechanism, the fifth pressure relief mechanism being arranged on the first side wall, and the fifth pressure relief mechanism being used for relieving the exhaust in the fifth collection cavity.

[0042] In the above scheme, the arrangement of the fifth pressure relief mechanism facilitates the relief of the exhaust in the fifth collection cavity when the pressure in the fifth collection cavity reaches a threshold value, improving the reliability of the battery.

[0043] According to some embodiments of the present application, the battery further comprises a first cover and a second cover, the first cover being connected to the two first wall portions; the second cover being connected to the two second wall portions; along the first direction, the second cover is oppositely arranged with the first cover, the isolation component being located between the first cover and the second cover, the first layer of battery monomers being located between the first cover and the isolation component, and the second layer of battery monomers being located between the second cover and the isolation component.

[0044] In the above scheme, the first cover body, the two first wall portions and the isolation component enclose a space for accommodating the first layer of battery monomers, so as to protect the first layer of battery monomers, and the maintenance and replacement of the first layer of battery monomers can be realized by disassembling the first cover body. The second cover body, the two second wall portions and the isolation component enclose a space for accommodating the second layer of battery monomers, so as to protect the second layer of battery monomers, and the maintenance and replacement of the second layer of battery monomers can be realized by disassembling the second cover body.

[0045] According to some embodiments of the present application, the first layer of battery monomers is connected to the first cover body, and the second layer of battery monomers is connected to the second cover body.

[0046] In the above scheme, the first layer of battery monomers is connected to the first cover body, and the second layer of battery monomers is connected to the second cover body, so that the assembly of the first layer of battery monomers and the first cover body and the assembly of the second layer of battery monomers and the second cover body can be simultaneously performed during the assembly of the battery, thereby improving the assembly efficiency of the battery.

[0047] According to some embodiments of the present application, the inside of the first cover body is formed with a first flow channel for accommodating a heat exchange medium, and the inside of the second cover body is formed with a second flow channel for accommodating a heat exchange medium.

[0048] In the above scheme, the first flow channel is provided, which can improve the heat exchange efficiency of the first layer of battery monomers and facilitate the improvement of the reliability of the battery. The second flow channel is provided, which can improve the heat exchange efficiency of the second layer of battery monomers and facilitate the improvement of the reliability of the battery.

[0049] According to some embodiments of the present application, the first layer of battery monomers comprises a plurality of first battery monomer groups; and the battery further comprises a first partition connected to the first cover body and located between adjacent two first battery monomer groups.

[0050] In the above scheme, the first partition is provided, which can improve the installation stability of the plurality of first battery monomer groups.

[0051] According to some embodiments of the present application, the first battery monomer group is connected to the first partition.

[0052] In the above scheme, the gravity of the first battery monomer group is applied to the first partition, and the first partition provides an action force for the first battery monomer group to overcome the gravity.

[0053] According to some embodiments of the present application, the first partition is integrally formed with or welded to the first cover body.

[0054] In the above scheme, the first partition is integrally formed with the first cover body, which can improve the structural strength. The first partition is welded to the first cover body, which has a lower manufacturing difficulty.

[0055] According to some embodiments of the present application, the first partition is internally formed with a third flow channel for accommodating a heat exchange medium.

[0056] In the above scheme, the third flow channel is arranged to adjust the temperature of the first battery cell group, thereby improving the reliability of the battery.

[0057] According to some embodiments of the present application, the second layer of battery cells comprises a plurality of second battery cell groups; and the battery further comprises a second partition connected to the second cover and located between two adjacent second battery cell groups.

[0058] In the above scheme, the second partition is arranged to improve the installation stability of the plurality of second battery cell groups.

[0059] According to some embodiments of the present application, the second battery cell group is connected to the second partition.

[0060] In the above scheme, the gravity of the second battery cell group is applied to the second partition, and the second partition provides an action force to the second battery cell group to overcome the gravity.

[0061] According to some embodiments of the present application, the second partition is integrally formed with or welded to the second cover.

[0062] In the above scheme, the second partition is integrally formed with the second cover to improve the structural strength. The second partition is welded to the second cover, which is relatively easy to manufacture.

[0063] According to some embodiments of the present application, the second partition is internally formed with a fourth flow channel for accommodating a heat exchange medium.

[0064] In the above scheme, the fourth flow channel is arranged to adjust the temperature of the second battery cell group, thereby improving the reliability of the battery.

[0065] According to some embodiments of the present application, the adjacent first wall portion and second wall portion are integrally formed.

[0066] In the above scheme, the adjacent first wall portion and second wall portion are integrally formed to improve the structural strength.

[0067] According to some embodiments of the present application, the first direction is parallel to the direction of gravity.

[0068] In the above scheme, the first layer of battery cells and the second layer of battery cells are arranged in a stack along the first direction, thereby reasonably utilizing the space in the direction of gravity and improving the space utilization.

[0069] In a second aspect, the embodiments of the present application further provide a power consumption device comprising the battery according to any one of the above embodiments.

[0070] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those having ordinary skill in the art upon examination of the following or can be learned from practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0071] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0072] Fig. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application;

[0073] Fig. 2 is a sectional view of a battery according to some embodiments of the present application;

[0074] Fig. 3 is an exploded schematic diagram of a partial structure of a battery according to some embodiments of the present application;

[0075] Fig. 4 is an assembly schematic diagram of a box body and a separation component according to some embodiments of the present application;

[0076] Fig. 5 is an exploded schematic diagram of a partial structure of a battery according to some other embodiments of the present application;

[0077] Fig. 6 is an assembly schematic diagram of a box body and a separation component according to some other embodiments of the present application;

[0078] Fig. 7 is an assembly schematic diagram of a first layer of battery monomers and a first cover, and an assembly schematic diagram of a second layer of battery monomers and a second cover according to some embodiments of the present application;

[0079] Fig. 8 is a structural exploded schematic diagram of a battery according to some embodiments of the present application.

[0080] In the drawings, the drawings are not drawn according to the actual scale.

[0081] Label description: 100 - battery; 10 - first layer of battery cells; 10a - first battery cell group; 11 - first battery cell; 20 - second layer of battery cells; 20a - second battery cell group; 111 - first pressure relief mechanism; 21 - second battery cell; 211 - second pressure relief mechanism; 30 - isolation component; 31 - first collection cavity; 311 - first chamber; 312 - second chamber; 32 - first surface; 321 - first through hole; 33 - second surface; 331 - second through hole; 34 - barrier; 341 - first flow guide; 341a - first end; 341b - second end; 342 - second flow guide; 342a - third end; 342b - fourth end; 35 - first plate body; 351 - first protruding part; 36 - second plate body; 361 - second protruding part; 37 - third surface; 38 - fourth surface; 39 - fifth flow channel; 40 - box body; 41 - first wall part; 411 - second collection cavity; 42 - second wall part; 421 - third collection cavity; 43 - first side wall; 431 - fifth collection cavity; 44 - second side wall; 51 - third pressure relief mechanism; 52 - fourth pressure relief mechanism; 53 - fifth pressure relief mechanism; 61 - first cover body; 611 - first flow channel; 62 - second cover body; 621 - second flow channel; 71 - first partition; 711 - third flow channel; 72 - second partition; 721 - fourth flow channel; 200 - controller; 300 - motor; 1000 - vehicle; X - first direction; Y - second direction; Z - third direction. DETAILED DESCRIPTION

[0082] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0083] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification of the present application and claims and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification of the present application and claims or the above description of drawings are used to distinguish different objects, rather than to describe a particular order or primary and secondary relationship.

[0084] Reference to an "embodiment" in this application 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 in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with one another.

[0085] In the description of the application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0086] The term "and / or" in this application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0087] "Multiple" appearing in this application refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0088] In some embodiments, the battery can be a battery module, and when there are multiple battery monomers, the multiple battery monomers are arranged and fixed to form a battery module.

[0089] In some embodiments, the battery can be a battery pack, and the battery pack includes a battery box and a battery monomer, and the battery monomer or the battery module is contained in the battery box.

[0090] In some embodiments, the battery box can be part of the chassis structure of the vehicle. For example, part of the battery box can be at least part of the floor of the vehicle, or part of the battery box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0091] In some embodiments, the battery can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0092] In the embodiments of the application, the battery monomer can be a secondary battery, which refers to a battery monomer that can be activated by charging after discharging to continue to use.

[0093] As an example, the battery cell can be a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes, including a square can battery cell, a blade battery cell, a multi-prismatic battery cell, such as a hexagonal prismatic battery cell, etc.

[0094] The battery cell includes a housing and a pressure relief mechanism disposed in the housing, the pressure relief mechanism being actuated to release internal pressure and temperature of the housing.

[0095] The pressure relief mechanism refers to an element or component that can be actuated to release internal pressure or temperature. The pressure relief mechanism can take the form of a relief valve, a gas valve, a pressure relief valve, or a safety valve, and can specifically take the form of a pressure-sensitive or temperature-sensitive element or structure, i.e., when the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure relief mechanism performs an action or a weak structure provided in the pressure relief mechanism is broken, thereby forming an opening or passage for the internal pressure or temperature to be released.

[0096] The "actuation" mentioned in the present application refers to the pressure relief mechanism generating an action or being activated to a certain state, so that the internal pressure and temperature of the battery cell can be released. The action generated by the pressure relief mechanism can include but is not limited to at least one of the following: the pressure relief mechanism is broken, cracked, torn, or opened, etc. When the pressure relief mechanism is actuated, the high-temperature and high-pressure substances inside the battery cell will be discharged as the discharge from the actuated part. In this way, the battery cell can be relieved of pressure and temperature at a controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0097] The discharge from the battery cell mentioned in the present application includes but is not limited to electrolyte, dissolved or split positive and negative electrode sheets, fragments of separator membranes, high-temperature and high-pressure gases generated by reactions, flames, etc.

[0098] The development of battery technology needs to consider various design factors, such as reliability, discharge capacity, charge-discharge rate, and other performance parameters, in addition to the energy density of the battery.

[0099] In some embodiments, the battery generally includes a plurality of battery cell groups, at least two of the plurality of battery cell groups being stacked in a direction. In order to complete the assembly of the battery cell group in a first predetermined direction and reduce the risk of thermal runaway spreading, a collection cavity corresponding to each battery cell group is provided for collecting the discharge from the battery cell when the battery cell is actuated. The plurality of collection cavities occupies a large internal space of the battery, and the energy density of the battery is low.

[0100] In view of this, the battery provided in the present application comprises a first layer of battery monomers, a second layer of battery monomers, and a separation component, the first layer of battery monomers and the second layer of battery monomers are arranged in a stacked manner along a first direction. The separation component is located between the first layer of battery monomers and the second layer of battery monomers along the first direction. A first battery monomer in the first layer of battery monomers is provided with a first pressure relief mechanism on a side facing the separation component, and a second battery monomer in the second layer of battery monomers is provided with a second pressure relief mechanism on a side facing the separation component. The separation component has a first collection cavity inside, which is used to collect the emissions of the first battery monomer when the first pressure relief mechanism is actuated and / or the emissions of the second battery monomer when the second pressure relief mechanism is actuated, and the emissions released when the first pressure relief mechanism is actuated and the emissions released when the second pressure relief mechanism is actuated share the first collection cavity, which is conducive to saving space inside the battery and improving the energy density of the battery.

[0101] The battery disclosed in the embodiments of the present application can be used in an electric device such as a vehicle, a ship, or an aircraft, but is not limited thereto. The power supply system of the electric device can be composed of the battery disclosed in the present application.

[0102] The embodiments of the present application provide an electric device using a battery as a power supply. The electric device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric vehicle, a ship, a spacecraft, and the like. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric vehicle toy, an electric ship toy, and an electric aircraft toy, and the like. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0103] The following embodiments are described by taking a vehicle as an example for the convenience of description.

[0104] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle provided in some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended vehicle. The vehicle 1000 is internally provided with a battery 100, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery 100 can be used for power supply of the vehicle 1000, for example, the battery 100 can be used as an operating power supply of the vehicle 1000, which is used for the working power demand of the circuit system of the vehicle 1000, such as the starting, navigation, and running of the vehicle 1000.

[0105] The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 is used to control the battery 100 to supply power to the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation, and running.

[0106] In some embodiments of the present application, the battery 100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing the fuel or natural gas to provide driving power for the vehicle 1000.

[0107] Please refer to FIG. 2 to FIG. 7, FIG. 2 is a cross-sectional view of the battery provided by some embodiments of the present application, FIG. 3 is an exploded schematic view of the partial structure of the battery provided by some embodiments of the present application, FIG. 4 is an assembly schematic view of the box body and the isolation component provided by some embodiments of the present application, FIG. 5 is an exploded schematic view of the partial structure of the battery provided by some other embodiments of the present application, FIG. 6 is an assembly schematic view of the box body and the isolation component provided by some other embodiments of the present application, and FIG. 7 is an assembly schematic view of the first layer of battery monomers and the first cover body and an assembly schematic view of the second layer of battery monomers and the second cover body provided by some embodiments of the present application.

[0108] The embodiments of the present application provide a battery 100, which comprises a first layer of battery monomers 10, a second layer of battery monomers 20 and an isolation component 30. The first layer of battery monomers 10 and the second layer of battery monomers 20 are arranged in a stack along a first direction X. The isolation component 30 is located between the first layer of battery monomers 10 and the second layer of battery monomers 20 along the first direction X. The first layer of battery monomers 10 comprises a plurality of first battery monomers 11, and a first pressure relief mechanism 111 is arranged on the side of the first battery monomers 11 facing the isolation component 30. The second layer of battery monomers 20 comprises a plurality of second battery monomers 21, and a second pressure relief mechanism 211 is arranged on the side of the second battery monomers 21 facing the isolation component 30. The isolation component 30 has a first collection cavity 31 inside, which is used to collect the emissions of the first battery monomers 11 when the first pressure relief mechanism 111 is actuated, and is also used to collect the emissions of the second battery monomers 21 when the second pressure relief mechanism 211 is actuated.

[0109] Please refer to FIG. 2, the first layer of battery monomers 10 and the second layer of battery monomers 20 are arranged in a stack along a first direction X, which can be that the first layer of battery monomers 10 and the second layer of battery monomers 20 are stacked along the direction of gravity. The first direction X can be parallel to the direction of gravity, or the first direction X can form a certain angle with the direction of gravity. In some embodiments, when the first layer of battery monomers 10 and the second layer of battery monomers 20 are stacked along the direction of gravity, the space inside the battery 100 in the direction of gravity can be reasonably utilized.

[0110] The plurality of first battery monomers 11 can be connected in series, in parallel or in a mixed manner. The mixed manner means that there are both series connection and parallel connection among the plurality of first battery monomers 11.

[0111] The plurality of second battery monomers 21 can be connected in series, in parallel or in a mixed manner. The mixed manner means that there are both series connection and parallel connection among the plurality of second battery monomers 21.

[0112] The first battery cell 11 and the second battery cell 21 can be a secondary battery 100 or a primary battery 100; the first battery cell 11 and the second battery cell 21 can also be a lithium-sulfur battery 100, a sodium-ion battery 100, or a magnesium-ion battery 100, but are not limited thereto.

[0113] In some embodiments, the first battery cell 11 includes a first electrode terminal, which can be disposed at the same end of the first battery cell 11 as the first pressure relief mechanism 111, or at two different ends of the first battery cell 11, such as adjacent ends or opposite ends, as the first pressure relief mechanism 111.

[0114] In some embodiments, the second battery cell 21 includes a second electrode terminal, which can be disposed at the same end of the second battery cell 21 as the second pressure relief mechanism 211, or at two different ends of the second battery cell 21, such as adjacent ends or opposite ends, as the second pressure relief mechanism 211.

[0115] The material of the isolation component 30 can be various, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0116] The battery 100 further includes a first busbar for electrically connecting the two first battery cells 11, and a second busbar for electrically connecting the two second battery cells 21.

[0117] The first surface 32 and the second surface 33 are two surfaces of the isolation component 30 oppositely disposed in the first direction X.

[0118] In some embodiments, the isolation component 30 can be formed by an extrusion process, and at least one cavity of the isolation component 30 is formed at the same time in the processing process, one of which can be used as the first collection cavity 31. In other embodiments, the isolation component 30 can also include two plates, one of which is punched to form a groove, and the other plate closes the slot of the groove to form the first collection cavity 31.

[0119] The first collecting cavity 31 is used to collect the emission of the first battery monomer 11 when the first pressure relief mechanism 111 is actuated, and / or is used to collect the emission of the second battery monomer 21 when the second pressure relief mechanism 211 is actuated, so that the first layer of battery monomers 10 and the second layer of battery monomers 20 share the first collecting cavity 31. In some embodiments, a plurality of flow guide channels can be arranged on the isolation component 30, some of which are used to guide the emission discharged by the first layer of battery monomers 10 when the first pressure relief mechanism 111 is actuated into the first collecting cavity 31, and some of which are used to guide the emission discharged by the second layer of battery monomers 20 when the second pressure relief mechanism 211 is actuated into the first collecting cavity 31.

[0120] The first collecting cavity 31 can be one cavity or a plurality of cavities arranged at intervals.

[0121] According to the battery 100 of the embodiments of the present application, the emission discharged when the first pressure relief mechanism 111 is actuated and the emission discharged when the second pressure relief mechanism 211 is actuated share the first collecting cavity 31, which is conducive to saving the space inside the battery 100 and improving the energy density of the battery 100.

[0122] Please refer to FIGS. 3-6. According to some embodiments of the present application, the isolation component 30 has a first surface 32 facing the first layer of battery monomers 10 and a second surface 33 facing the second layer of battery monomers 20, the first surface 32 is provided with a first through hole 321 communicating with the first collecting cavity 31, the first through hole 321 is arranged corresponding to the first pressure relief mechanism 111, and the second surface 33 is provided with a second through hole 331 communicating with the first collecting cavity 31, the second through hole 331 is arranged corresponding to the second pressure relief mechanism 211.

[0123] The first through hole 321 is arranged corresponding to the first pressure relief mechanism 111, and the emission discharged when the first pressure relief mechanism 111 is actuated can enter the first collecting cavity 31 through the first through hole 321.

[0124] In some embodiments, the number of first through holes 321 can be the same as or different from the number of first pressure relief mechanisms 111. For example, one first through hole 321 can correspond to one first pressure relief mechanism 111, or one first through hole 321 can correspond to a plurality of first pressure relief mechanisms 111.

[0125] The second through hole 331 is arranged corresponding to the second pressure relief mechanism 211, and the emission discharged when the second pressure relief mechanism 211 is actuated can enter the first collecting cavity 31 through the second through hole 331.

[0126] In some embodiments, the number of the second through holes 331 can be the same as or different from the number of the second pressure relief mechanisms 211. For example, one second through hole 331 can correspond to one second pressure relief mechanism 211, or one second through hole 331 can correspond to multiple second pressure relief mechanisms 211.

[0127] In the above scheme, the first through holes 321 are arranged corresponding to the first pressure relief mechanisms 111, and the second through holes 331 are arranged corresponding to the second pressure relief mechanisms 211. The arrangement of the first through holes 321 and the second through holes 331 facilitates the collection of the emissions by the first collection cavity 31, thereby reducing the risk of the emissions short-circuiting the first battery monomer 11 and / or the second battery monomer 21, and also reducing the risk of the spread of thermal runaway, and improving the reliability of the battery 100.

[0128] Please refer to FIG. 4 and FIG. 6. According to some embodiments of the present application, the isolation component 30 includes a blocking piece 34 arranged in the first collection cavity 31. Along the first direction X, the blocking piece 34 is arranged spaced apart from the first through holes 321, and the blocking piece 34 is arranged spaced apart from the second through holes 331, and the projection of the blocking piece 34 covers the first through holes 321 and the second through holes 331.

[0129] The blocking piece 34 is arranged in the first collection cavity 31, and the blocking piece 34 is arranged spaced apart from the first through holes 321 so as to facilitate the emissions discharged by the first battery monomer 11 to enter the first collection cavity 31 through the first through holes 321; and the blocking piece 34 is arranged spaced apart from the second through holes 331 so as to facilitate the emissions discharged by the second battery monomer 21 to enter the first collection cavity 31 through the second through holes 331.

[0130] The blocking piece 34 can completely isolate the first through holes 321 and the second through holes 331, so that the first through holes 321 and the second through holes 331 are located in two independent chambers; or the blocking piece 34 can only separate the first through holes 321 and the second through holes 331, but the first through holes 321 and the second through holes 331 are still located in the same chamber.

[0131] In some embodiments, along the first direction X, the first through holes 321 and the second through holes 331 at least partially overlap; or along the first direction X, the first through holes 321 and the second through holes 331 do not overlap.

[0132] After the discharge of the first pressure relief mechanism 111 enters the first collection cavity 31 through the first through hole 321, the blocking piece 34 can block the flow of the discharge in the first direction X, the blocking piece 34 can slow down the flow speed of the discharge, and reduce the risk of the discharge flowing to the second through hole 331. After the discharge of the second pressure relief mechanism 211 enters the first collection cavity 31 through the second through hole 331, the blocking piece 34 can block the flow of the discharge in the first direction X, the blocking piece 34 can slow down the flow speed of the discharge, and reduce the risk of the discharge flowing to the first through hole 321.

[0133] In the above scheme, the blocking piece 34 is arranged in the first collection cavity 31, and the projection of the blocking piece 34 covers the first through hole 321 and the second through hole 331. The blocking piece 34 can block the discharge of the first pressure relief mechanism 111 and the discharge of the second pressure relief mechanism 211, reduce the influence of the discharge of the first pressure relief mechanism 111 on the second battery monomer 21, and reduce the influence of the discharge of the second pressure relief mechanism 211 on the first battery monomer 11, thereby improving the reliability of the battery 100.

[0134] Please refer to FIG. 3 and FIG. 4, according to some embodiments of the present application, the blocking piece 34 separates the first collection cavity 31 into the first chamber 311 and the second chamber 312 which are independent of each other, the first through hole 321 communicates with the first chamber 311, and the second through hole 331 communicates with the second chamber 312.

[0135] In some embodiments, the battery 100 further comprises a box 40, the first layer of battery monomers 10, the second layer of battery monomers 20 and the isolation component 30 are all located in the box 40, and the isolation component 30 is connected with the box 40 to separate the first layer of battery monomers 10 and the second layer of battery monomers 20. The blocking piece 34 is connected to the box 40, thereby separating the first collection cavity 31 into the first chamber 311 and the second chamber 312 which are independent of each other.

[0136] The first chamber 311 and the second chamber 312 are two chambers which are independent of each other, and the first chamber 311 does not communicate with the second chamber 312. After the discharge of the first pressure relief mechanism 111 enters the first chamber 311 through the first through hole 321, the discharge cannot enter the second chamber 312, thereby reducing the influence of the discharge on the second layer of battery monomers 20. Similarly, after the discharge of the second pressure relief mechanism 211 enters the second chamber 312 through the second through hole 331, the discharge cannot enter the first chamber 311, thereby reducing the influence of the discharge on the first layer of battery monomers 10.

[0137] In the above scheme, the first chamber 311 and the second chamber 312 are independent of each other, which can further reduce the influence of the emissions discharged by the first pressure relief mechanism 111 on the second battery monomer 21 and reduce the influence of the emissions discharged by the second pressure relief mechanism 211 on the first battery monomer 11, thereby improving the reliability of the battery 100.

[0138] Please refer to FIG. 3 and FIG. 4, according to some embodiments of the present application, the battery 100 further comprises a box 40, the box 40 comprises two first wall portions 41 oppositely arranged along a second direction Y, the first layer of battery monomers 10 is arranged between the two first wall portions 41, and the isolation component 30 connects the two first wall portions 41, and the second direction Y is perpendicular to the first direction X; the inside of the first wall portion 41 is formed with a second collection cavity 411, and the second collection cavity 411 is in communication with the first chamber 311.

[0139] The two first wall portions 41 are oppositely arranged along the second direction Y, and the isolation component 30 connects the two first wall portions 41. The isolation component 30 can be located at one end of the first wall portion 41 close to the second layer of battery monomers 20 in the first direction X.

[0140] In some embodiments, among the first layer of battery monomers 10, a plurality of first battery monomers 11 can be arranged in a third direction Z, and the third direction Z, the second direction Y and the first direction X are perpendicular to each other.

[0141] The second collection cavity 411 is in communication with the first chamber 311, and when the emissions discharged by the first pressure relief mechanism 111 enter the first chamber 311, the emissions can enter the second collection cavity 411, thereby increasing the storage space of the emissions.

[0142] In the above scheme, the isolation component 30 connects the two first wall portions 41, the isolation component 30 and the two first wall portions 41 form a space for accommodating the first layer of battery monomers 10, and the second collection cavity 411 is in communication with the first chamber 311, so that the emissions discharged by the first pressure relief mechanism 111 can enter the second collection cavity 411 through the first chamber 311, so as to collect the emissions discharged by the first pressure relief mechanism 111, reduce the influence of the emissions on other battery monomers 100, and improve the reliability of the battery 100.

[0143] Please refer to FIG. 3 and FIG. 4, according to some embodiments of the present application, the battery 100 further comprises a third pressure relief mechanism 51, the third pressure relief mechanism 51 is arranged on at least one first wall portion 41, and the third pressure relief mechanism 51 is used for discharging the emissions in the second collection cavity 411.

[0144] The third pressure relief mechanism 51 can be arranged on the side of the first wall portion 41 away from the first layer of battery monomers 10, so as to discharge the emissions in the second collection cavity 411 by the third pressure relief mechanism 51.

[0145] In the above scheme, the third pressure relief mechanism 51 is arranged to facilitate the discharge of the exhaust in the second collection cavity 411 when the pressure in the second collection cavity 411 reaches a threshold value, thereby improving the reliability of the battery 100.

[0146] According to some embodiments of the present application, the isolation component 30 is integrally formed with or welded to the two first wall portions 41.

[0147] The isolation component 30 and the two first wall portions 41 can be integrally extruded or injection molded.

[0148] In the above scheme, the isolation component 30 is integrally formed with the two first wall portions 41, thereby improving the structural strength of the isolation component 30 and the two first wall portions 41. The isolation component 30 is welded to the two first wall portions 41, thereby reducing the difficulty of processing and manufacturing.

[0149] Please refer to FIG. 3 and FIG. 4, according to some embodiments of the present application, the box 40 includes two second wall portions 42 oppositely arranged along the second direction Y, the second layer of battery monomers 20 is arranged between the two second wall portions 42, and the isolation component 30 connects the two second wall portions 42; the inside of the second wall portion 42 forms a third collection cavity 421, and the third collection cavity 421 communicates with the second cavity 312.

[0150] The two second wall portions 42 are oppositely arranged along the second direction Y, and the isolation component 30 connects the two second wall portions 42. The isolation component 30 can be located at one end of the second wall portion 42 close to the first layer of battery monomers 10 in the first direction X.

[0151] In some embodiments, among the second layer of battery monomers 20, the plurality of second battery monomers 21 can be arranged in a stacked manner along the third direction Z.

[0152] The third collection cavity 421 communicates with the second cavity 312. When the exhaust discharged by the second pressure relief mechanism 211 enters the second cavity 312, the exhaust can enter the third collection cavity 421, thereby increasing the storage space of the exhaust.

[0153] In the above scheme, the isolation component 30 connects the two second wall portions 42, the isolation component 30 and the two second wall portions 42 enclose a space for accommodating the second layer of battery monomers 20, and the third collection cavity 421 communicates with the second cavity 312, so that the exhaust discharged by the second pressure relief mechanism 211 can enter the third collection cavity 421 through the second cavity 312, thereby facilitating the collection of the exhaust discharged by the second pressure relief mechanism 211 and reducing the influence of the exhaust on other battery monomers 100.

[0154] Please refer to FIG. 3 and FIG. 4, according to some embodiments of the present application, the battery 100 further comprises a fourth pressure relief mechanism 52, the fourth pressure relief mechanism 52 is arranged on the at least one second wall portion 42, and the fourth pressure relief mechanism 52 is used for releasing the exhaust in the third collecting cavity 421.

[0155] The fourth pressure relief mechanism 52 can be arranged on the side of the second wall portion 42 away from the second layer of battery monomers 20, so that the fourth pressure relief mechanism 52 releases the exhaust in the third collecting cavity 421.

[0156] In the above scheme, the arrangement of the fourth pressure relief mechanism 52 facilitates the release of the exhaust in the third collecting cavity 421 when the pressure in the third collecting cavity 421 reaches a threshold value, thereby improving the reliability of the battery 100.

[0157] According to some embodiments of the present application, the isolation component 30 is integrally formed or welded with the two second wall portions 42.

[0158] The isolation component 30 and the two second wall portions 42 can be integrally extruded or injection molded.

[0159] In the above scheme, the isolation component 30 is integrally formed with the two second wall portions 42, thereby improving the structural strength of the isolation component 30 and the two second wall portions 42. The isolation component 30 and the two second wall portions 42 are welded, which is relatively easy to manufacture.

[0160] Please refer to FIG. 5 and FIG. 6, according to some embodiments of the present application, the isolation component 30 comprises a first plate body 35 and a second plate body 36 arranged opposite to each other along the first direction X, and the first collecting cavity 31 is located between the first plate body 35 and the second plate body 36; the first plate body 35 comprises a first surface 32 and a third surface 37 arranged opposite to each other along the first direction X, and the second plate body 36 comprises a second surface 33 and a fourth surface 38 arranged opposite to each other along the first direction X.

[0161] The third surface 37 and the fourth surface 38 define the first collecting cavity 31, the first through hole 321 penetrates the first surface 32 and the third surface 37, and the second through hole 331 penetrates the second surface 33 and the fourth surface 38.

[0162] In the above scheme, the first pressure relief mechanism 111 is arranged opposite to the first plate body 35, the second pressure relief mechanism 211 is arranged opposite to the second plate body 36, and the first plate body 35 and the second plate body 36 are arranged opposite to each other along the first direction X and define the first collecting cavity 31, thereby simplifying the structure and facilitating the manufacturing.

[0163] In some embodiments, the first plate body 35 has a first protruding portion 351 protruding away from the second plate body 36, and the first through hole 321 is arranged on the first protruding portion 351; the second plate body 36 has a second protruding portion 361 protruding away from the first plate body 35, and the second through hole 331 is arranged on the second protruding portion 361.

[0164] The arrangement of the first protruding portion 351 can improve the overall strength of the first plate body 35. The arrangement of the second protruding portion 361 can improve the overall strength of the second plate body 36.

[0165] Please refer to FIG. 5 and FIG. 6. According to some embodiments of the present application, the blocking piece 34 comprises a first flow guide 341, the first flow guide 341 has a first end 341a and a second end 341b, the first end 341a is connected to the third surface 37, and the second end 341b is arranged apart from the first through hole 321. In the first direction X, the projection of the first flow guide 341 covers the first through hole 321.

[0166] The first end 341a and the second end 341b can be arranged in sequence in the first direction X, and the second end 341b can be an end of the first flow guide 341 away from the third surface 37.

[0167] The second end 341b is arranged apart from the first through hole 321, so that the second end 341b does not block the first through hole 321, to facilitate the exhaust emitted by the first pressure relief mechanism 111 to enter the first collection cavity 31 through the first through hole 321.

[0168] In the first direction X, the projection of the first flow guide 341 covers the first through hole 321, so that after the exhaust enters the first collection cavity 31 through the first through hole 321, the exhaust can be guided by the first flow guide 341 to change the flow direction of the exhaust.

[0169] In the above scheme, the first end 341a is connected to the third surface 37, the second end 341b is arranged apart from the first through hole 321, and the projection of the first flow guide 341 covers the first through hole 321, so that the exhaust entering the first collection cavity 31 through the first through hole 321 can be guided by the first flow guide 341, thereby reducing the risk of the exhaust flowing directly to the second through hole 331.

[0170] Please refer to FIG. 5 and FIG. 6. According to some embodiments of the present application, the distance between the first flow guide 341 and the third surface 37 gradually increases from the first end 341a to the second end 341b.

[0171] The distance between the first flow guide 341 and the third surface 37 gradually increases from the first end 341a to the second end 341b in the first direction X, and the first flow guide 341 is inclined relative to the third surface 37.

[0172] When the discharge of the first pressure relief mechanism 111 enters the first through hole 321, the discharge flows away from the first end 341a under the flow guiding effect of the first flow guide 341, buffers the flow rate of the discharge, and reduces the risk of the discharge directly impacting the second plate body 36.

[0173] In the above scheme, the distance between the first flow guide 341 and the third surface 37 gradually increases from the first end 341a to the second end 341b, which facilitates the first flow guide 341 to change the flow direction of the discharge entering the first collection cavity 31 from the first through hole 321.

[0174] Please refer to FIG. 5 and FIG. 6, according to some embodiments of the present application, the blocking piece 34 further comprises a second flow guide 342, the second flow guide 342 has a third end 342a and a fourth end 342b, the third end 342a is connected to the fourth surface 38, and the fourth end 342b is spaced apart from the second through hole 331, and the projection of the second flow guide 342 covers the second through hole 331 in the first direction X.

[0175] The third end 342a and the fourth end 342b can be sequentially arranged in the first direction X, and the fourth end 342b can be an end of the second flow guide 342 away from the fourth surface 38.

[0176] The fourth end 342b is spaced apart from the second through hole 331, so that the fourth end 342b does not block the second through hole 331, so as to facilitate the discharge of the second pressure relief mechanism 211 to enter the first collection cavity 31 through the second through hole 331.

[0177] In the first direction X, the projection of the second flow guide 342 covers the second through hole 331, so that after the discharge enters the first collection cavity 31 through the second through hole 331, the discharge can be guided by the second flow guide 342 to change the flow direction of the discharge.

[0178] In the above scheme, the third end 342a is connected to the fourth surface 38, the fourth end 342b is spaced apart from the second through hole 331, and the projection of the second flow guide 342 covers the second through hole 331, so that the discharge entering the first collection cavity 31 through the second through hole 331 can be guided by the second flow guide 342, thereby reducing the risk of the discharge directly flowing to the first through hole 321.

[0179] Please refer to FIG. 5 and FIG. 6, according to some embodiments of the present application, the distance between the second flow guide 342 and the fourth surface 38 gradually increases from the third end 342a to the fourth end 342b.

[0180] The "distance between the second flow guide 342 and the fourth surface 38 gradually increases from the third end 342a to the fourth end 342b" means that the distance between the second flow guide 342 and the fourth surface 38 gradually increases in the first direction X from the third end 342a to the fourth end 342b, and the second flow guide 342 is inclined relative to the fourth surface 38.

[0181] When the discharge of the second pressure relief mechanism 211 enters the second through hole 331, the discharge flows in the direction away from the third end 342a under the flow guiding effect of the second flow guide 342, buffers the flow rate of the discharge, and reduces the risk of the discharge directly impacting the first plate body 35.

[0182] In the above scheme, the distance between the second flow guide 342 and the fourth surface 38 gradually increases from the third end 342a to the fourth end 342b, which facilitates the second flow guide 342 to change the flow direction of the discharge entering the first collection cavity 31 from the second through hole 331.

[0183] Please refer to FIG. 5 and FIG. 6, according to some embodiments of the present application, the battery 100 further comprises a box body 40, the box body 40 comprises two first side walls 43 oppositely arranged along a second direction Y, the isolation component 30 is connected to the two first side walls 43, and the second direction Y is perpendicular to the first direction X; each first side wall 43 comprises a first wall portion 41 and a second wall portion 42 arranged along the first direction X, the first layer of battery monomers 10 is located between the first wall portions 41 of the two first side walls 43, and the second layer of battery monomers 20 is located between the second wall portions 42 of the two first side walls 43.

[0184] The isolation component 30 is connected to the two first side walls 43, and the isolation component 30 divides the space between the two first side walls 43 into two spaces, which respectively accommodate the first layer of battery monomers 10 and the second layer of battery monomers 20.

[0185] In each first side wall 43, the first wall portion 41 and the second wall portion 42 can be integrally formed or welded.

[0186] In the above scheme, the isolation component 30 is connected to the two first side walls 43 to facilitate fixing the isolation component 30; the isolation component 30 and the two first wall portions 41 are connected to form a space for accommodating the first layer of battery monomers 10 to facilitate protecting the first layer of battery monomers 10; and the isolation component 30 and the two second wall portions 42 are connected to form a space for accommodating the second layer of battery monomers 20 to facilitate protecting the second layer of battery monomers 20.

[0187] Referring to FIG. 5 and FIG. 6, according to some embodiments of the present application, the interior of the first side wall 43 is formed with a fifth collection cavity 431, and the fifth collection cavity 431 is in communication with the first collection cavity 31.

[0188] The first wall portion 41 and the second wall portion 42 can each be a hollow structure, and the interior space of the first wall portion 41 and the interior space of the second wall portion 42 can jointly constitute the fifth collection cavity 431.

[0189] In some embodiments, when the barrier 34 includes the first flow guide 341 and the second flow guide 342, the fourth end 342b is connected with the second end 341b, and the first flow guide 341 and the second flow guide 342 can guide the discharge in the first collection cavity 31 towards the fifth collection cavity 431.

[0190] In the above scheme, the fifth collection cavity 431 can be in communication with the first collection cavity 31, so that the discharge in the first collection cavity 31 can flow to the fifth collection cavity 431, facilitating the accommodation of more discharge.

[0191] Referring to FIG. 5 and FIG. 6, according to some embodiments of the present application, the battery 100 further includes a fifth pressure relief mechanism 53, and the fifth pressure relief mechanism 53 is arranged on the first side wall 43, and the fifth pressure relief mechanism 53 is used for relieving the discharge in the fifth collection cavity 431.

[0192] The fifth pressure relief mechanism 53 can be arranged on one first side wall 43, or can be arranged on two first side walls 43. The fifth pressure relief mechanism 53 can be arranged on the side of the first side wall 43 away from the first collection cavity 31, that is, the direction of relieving the discharge of the fifth pressure relief mechanism 53 is away from the first collection cavity 31.

[0193] In the above scheme, the arrangement of the fifth pressure relief mechanism 53 facilitates the relief of the discharge in the fifth collection cavity 431 when the pressure in the fifth collection cavity 431 reaches a threshold value, improving the reliability of the battery 100.

[0194] Referring to FIG. 7, according to some embodiments of the present application, the battery 100 further includes a first cover 61 and a second cover 62, the first cover 61 is connected to the two first wall portions 41, the second cover 62 is connected to the two second wall portions 42, the second cover 62 is arranged opposite to the first cover 61 along the first direction X, the isolation component 30 is located between the first cover 61 and the second cover 62, the first layer of battery monomers 10 is located between the first cover 61 and the isolation component 30, and the second layer of battery monomers 20 is located between the second cover 62 and the isolation component 30.

[0195] The first cover 61 can be configured as a one-side open cover structure, or can be configured as a flat plate.

[0196] The first cover body 61, the two first wall portions 41 and the partition member 30 enclose a space for accommodating the first layer of battery cells 10, and the first cover body 61 can play a protective role for the first layer of battery cells 10.

[0197] The second cover body 62 can be configured as a one-side open cover structure or as a flat plate.

[0198] The second cover body 62, the two second wall portions 42 and the partition member 30 enclose a space for accommodating the second layer of battery cells 20, and the second cover body 62 can play a protective role for the second layer of battery cells 20.

[0199] In the above scheme, the first cover body 61, the two first wall portions 41 and the partition member 30 enclose a space for accommodating the first layer of battery cells 10 to protect the first layer of battery cells 10, and by disassembling the first cover body 61, the maintenance and replacement of the first layer of battery cells 10 can be achieved. The second cover body 62, the two second wall portions 42 and the partition member 30 enclose a space for accommodating the second layer of battery cells 20 to protect the second layer of battery cells 20, and by disassembling the second cover body 62, the maintenance and replacement of the second layer of battery cells 20 can be achieved.

[0200] Please refer to FIG. 7, according to some embodiments of the present application, the first layer of battery cells 10 is connected to the first cover body 61, and the second layer of battery cells 20 is connected to the second cover body 62.

[0201] The connection mode of the first layer of battery cells 10 and the first cover body 61 can be various, for example, the first layer of battery cells 10 and the first cover body 61 are bonded, welded, threadedly connected, etc.

[0202] In some embodiments, the first cover body 61 can carry the first layer of battery cells 10. The gravity of the first layer of battery cells 10 is applied to the first cover body 61, and the first cover body 61 provides an action force for the first layer of battery cells 10 to overcome gravity.

[0203] The connection mode of the second layer of battery cells 20 and the second cover body 62 can be various, for example, the second layer of battery cells 20 and the second cover body 62 are bonded, welded, threadedly connected, etc.

[0204] In some embodiments, the second cover body 62 can carry the first layer of battery cells 10. The gravity of the second layer of battery cells 20 is applied to the second cover body 62, and the second cover body 62 provides an action force for the second layer of battery cells 20 to overcome gravity.

[0205] In the above scheme, the first layer of battery monomers 10 is connected to the first cover 61, and the second layer of battery monomers 20 is connected to the second cover 62. During the assembly of the battery 100, the assembly of the first layer of battery 100 and the first cover 61 and the assembly of the second layer of battery monomers 20 and the second cover 62 can be performed synchronously, which can improve the assembly efficiency of the battery 100.

[0206] Please refer to FIG. 7. According to some embodiments of the present application, the first cover 61 is internally formed with a first flow channel 611 for accommodating heat exchange medium, and the second cover 62 is internally formed with a second flow channel 621 for accommodating heat exchange medium.

[0207] The heat exchange medium in the first flow channel 611 can be the same as the heat exchange medium in the second flow channel 621.

[0208] The heat exchange medium in the first flow channel 611 can be circulated to achieve better temperature regulation effect. For example, the first flow channel 611 is provided with two openings, one of which is a heat exchange medium inlet, and the other of which is a heat exchange medium outlet, and the two openings are respectively connected with an external heat exchange medium circulation system, so that the heat exchange medium circulates in the first flow channel 611.

[0209] The heat exchange medium in the second flow channel 621 can be circulated to achieve better temperature regulation effect. For example, the second flow channel 621 is provided with two openings, one of which is a heat exchange medium inlet, and the other of which is a heat exchange medium outlet, and the two openings are respectively connected with an external heat exchange medium circulation system, so that the heat exchange medium circulates in the second flow channel 621.

[0210] In the above scheme, the first flow channel 611 can improve the heat exchange efficiency of the first layer of battery monomers 10, and facilitate to improve the reliability of the battery 100. The second flow channel 621 can improve the heat exchange efficiency of the second layer of battery monomers 20, and facilitate to improve the reliability of the battery 100.

[0211] Please refer to FIG. 7. According to some embodiments of the present application, the first layer of battery monomers 10 includes a plurality of first battery monomer groups 10a; and the battery 100 further includes a first partition 71 connected to the first cover 61 and located between adjacent two first battery monomer groups 10a.

[0212] In some embodiments, the plurality of first battery monomer groups 10a can be arranged at intervals along the second direction Y. For example, as shown in the figure, the first layer of battery monomers 10 includes two first battery monomer groups 10a, and the two first battery monomer groups 10a are arranged at intervals along the second direction Y.

[0213] The first partition 71 is a component for separating adjacent two first battery monomer groups 10a.

[0214] The first partition 71 is connected to the first cover 61, for example, by being bonded, welded, integrally formed, or the like, to the first cover 61.

[0215] In the above scheme, the first partition 71 is provided, which can improve the installation stability of the plurality of first battery monomer groups 10a.

[0216] Please refer to FIG. 7, according to some embodiments of the present application, the first battery monomer group 10a is connected to the first partition 71.

[0217] The first battery monomer group 10a and the first partition 71 can be connected by bonding, welding, or the like.

[0218] In the above scheme, the gravity of the first battery monomer group 10a is applied to the first partition 71, and the first partition 71 provides the first battery monomer group 10a with a force to overcome gravity.

[0219] According to some embodiments of the present application, the first partition 71 is integrally formed or welded to the first cover 61.

[0220] The first partition 71 and the first cover 61 can be integrally extruded or injection molded.

[0221] In the above scheme, the first partition 71 and the first cover 61 are integrally formed, which can improve the structural strength. The first partition 71 and the first cover 61 are welded, which is relatively easy to manufacture.

[0222] Please refer to FIG. 7, according to some embodiments of the present application, the first partition 71 is formed with a third flow channel 711 inside to accommodate a heat exchange medium.

[0223] The heat exchange medium in the third flow channel 711 can be the same as the heat exchange medium in the first flow channel 611.

[0224] The heat exchange medium in the third flow channel 711 can be circulated to achieve better temperature regulation. For example, the third flow channel 711 can be provided with two openings, one being a heat exchange medium inlet and the other being a heat exchange medium outlet, both of which are connected to an external heat exchange medium circulation system to circulate the heat exchange medium in the third flow channel 711.

[0225] In some embodiments, the third flow channel 711 can be in communication with the first flow channel 611.

[0226] In the above scheme, the third flow channel 711 is provided, which can regulate the temperature of the first battery monomer group 10a, and facilitate to improve the reliability of the battery 100.

[0227] Referring to FIG. 7, according to some embodiments of the present application, the second layer of battery cells 20 includes a plurality of second battery cell groups 20a; the battery 100 further includes a second partition 72 connected to the second cover 62 and located between two adjacent second battery cell groups 20a.

[0228] In some embodiments, the plurality of second battery cell groups 20a can be spaced apart along the second direction Y. For example, as shown in the figure, the second layer of battery cells 20 includes two second battery cell groups 20a, which are spaced apart along the second direction Y.

[0229] The second partition 72 is a component for separating two adjacent second battery cell groups 20a.

[0230] The second partition 72 is connected to the second cover 62, for example, the second partition 72 is bonded, welded, integrally formed, etc. with the second cover 62.

[0231] In the above scheme, the provision of the second partition 72 can improve the installation stability of the plurality of second battery cell groups 20a.

[0232] According to some embodiments of the present application, the second battery cell group 20a is connected to the second partition 72.

[0233] The connection mode of the second battery cell group 20a and the second partition 72 can be bonding, welding, etc.

[0234] In the above scheme, the gravity of the second battery cell group 20a is applied to the second partition 72, and the second partition 72 provides an action force to overcome the gravity for the second battery cell group 20a.

[0235] According to some embodiments of the present application, the second partition 72 is integrally formed or welded with the second cover 62.

[0236] The second partition 72 and the second cover 62 can be integrally extruded or injection molded.

[0237] In the above scheme, the integrally formed second partition 72 and the second cover 62 can improve the structural strength. The second partition 72 and the second cover 62 are welded, which has lower manufacturing difficulty.

[0238] Referring to FIG. 7, according to some embodiments of the present application, the second partition 72 is formed with a fourth flow channel 721 inside to accommodate a heat exchange medium.

[0239] The heat exchange medium in the fourth flow channel 721 can be the same as the heat exchange medium in the second flow channel 621.

[0240] The heat exchange medium in the fourth flow channel 721 can be circulated to achieve better temperature regulation. For example, the fourth flow channel 721 can be provided with two openings, one of which is a heat exchange medium inlet, and the other of which is a heat exchange medium outlet, and the two openings are respectively connected with an external heat exchange medium circulation system, so that the heat exchange medium circulates in the fourth flow channel 721.

[0241] In some embodiments, the fourth flow channel 721 can be in communication with the second flow channel 621.

[0242] In the above scheme, the fourth flow channel 721 can adjust the temperature of the second battery monomer group 20a, and facilitate to improve the reliability of the battery 100.

[0243] In some embodiments, the inside of the isolation component 30 can be formed with a fifth flow channel 39 containing a heat exchange medium. The arrangement of the fifth flow channel 39 can adjust the temperature of the first layer of battery monomers 10 and the second layer of battery monomers 20, and improve the reliability of the battery 100.

[0244] According to some embodiments of the present application, the adjacent first wall portion 41 and the second wall portion 42 are integrally formed.

[0245] The first wall portion 41 and the second wall portion 42 can be integrally extruded.

[0246] In the above scheme, the integrally formed adjacent first wall portion 41 and second wall portion 42 can improve the structural strength.

[0247] Please refer to FIG. 8, which is a structural exploded view of a battery according to some embodiments of the present application. According to some embodiments of the present application, the box body 40 includes two first side walls 43 and two second side walls 44, the two first side walls 43 are oppositely arranged along the second direction Y, and the two second side walls 44 are oppositely arranged along the third direction Z, and the two ends of the first side wall 43 in the third direction Z are respectively connected with the two second side walls 44. Wherein, each first side wall 43 includes a first wall portion 41 and a second wall portion 42. The isolation component 30 connects the two first side walls 43 and the two second side walls 44. The first cover body 61 connects the two first wall portions 41 and the two second side walls 44, and the second cover body 62 connects the two second wall portions 42 and the two second side walls 44. The first cover body 61, the isolation component 30, the two first wall portions 41 and the two second side walls 44 define a space containing the first layer of battery monomers, and the second cover body 62, the isolation component 30, the two second wall portions 42 and the two second side walls 44 define a space containing the second layer of battery monomers 20.

[0248] The arrangement of the box body 40 can protect the first layer of battery monomers 10 and the second layer of battery monomers 20, and improve the reliability of the battery 100.

[0249] According to some embodiments of the present application, the first direction X is parallel to the direction of gravity.

[0250] In the above scheme, the first layer of battery monomers 10 and the second layer of battery monomers 20 are arranged in a stacked manner along the first direction X, which can reasonably utilize the space in the direction of gravity and improve the space utilization.

[0251] In the above embodiments, the pressure relief mechanism mentioned can be various possible pressure relief mechanisms, and the embodiments of the present application are not limited thereto. For example, the pressure relief mechanism can be a temperature-sensitive pressure relief mechanism configured to melt when the internal temperature of the battery 100 monomer provided with the pressure relief mechanism reaches a threshold value; for example, the pressure relief mechanism can be a pressure-sensitive pressure relief mechanism configured to break when the internal air pressure of the battery 100 monomer provided with the pressure relief mechanism reaches a threshold value.

[0252] According to some embodiments of the present application, the embodiments of the present application also provide a power-using device comprising the battery 100 provided by any of the above embodiments.

[0253] The battery 100 is used to provide electric energy.

[0254] The power-using device can be a system or device using the battery 100 as described above.

[0255] According to some embodiments of the present application, referring to FIGS. 2-4 and FIGS. 7 and 8, the embodiments of the present application provide a battery 100 comprising a first layer of battery monomers 10, a second layer of battery monomers 20, a separation component 30, a box body 40, a first cover 61 and a second cover 62.

[0256] The first layer of battery monomers 10 and the second layer of battery monomers 20 are arranged in a stacked manner along the first direction X, which is parallel to the direction of gravity. Along the first direction X, the separation component 30 is located between the first layer of battery monomers 10 and the second layer of battery monomers 20. The first layer of battery monomers 10 comprises a plurality of first battery monomers 11, and the first battery monomers 11 are provided with first pressure relief mechanisms 111 on the side facing the separation component 30. The second layer of battery monomers 20 comprises a plurality of second battery monomers 21, and the second battery monomers 21 are provided with second pressure relief mechanisms 211 on the side facing the separation component 30. The separation component 30 has a first collection cavity 31 inside, which is used to collect the emissions of the first battery monomers 11 when the first pressure relief mechanisms 111 are actuated and / or to collect the emissions of the second battery monomers 21 when the second pressure relief mechanisms 211 are actuated. The separation component 30 has a first surface 32 facing the first layer of battery monomers 10 and a second surface 33 facing the second layer of battery monomers 20, the first surface 32 is provided with a first through hole 321 communicating with the first collection cavity 31, and the second surface 33 is provided with a second through hole 331 communicating with the first collection cavity 31.

[0257] The isolation component 30 includes a blocking piece 34 disposed in the first collection cavity 31; along the first direction X, the blocking piece 34 is spaced apart from the first through hole 321, the blocking piece 34 is spaced apart from the second through hole 331, and the projection of the blocking piece 34 covers the first through hole 321 and the second through hole 331.

[0258] In some embodiments, the blocking piece 34 divides the first collection cavity 31 into a first chamber 311 and a second chamber 312 independent of each other, the first through hole 321 communicates with the first chamber 311, and the second through hole 331 communicates with the second chamber 312.

[0259] The box 40 includes two first wall portions 41 oppositely arranged along a second direction Y, the first layer of battery monomers 10 is arranged between the two first wall portions 41, the isolation component 30 connects the two first wall portions 41, and the second direction Y is perpendicular to the first direction X; the inside of the first wall portion 41 is formed with a second collection cavity 411, and the second collection cavity 411 communicates with the first chamber 311. The box 40 includes two second wall portions 42 oppositely arranged along the second direction Y, the second layer of battery monomers 20 is arranged between the two second wall portions 42, and the isolation component 30 connects the two second wall portions 42; the inside of the second wall portion 42 is formed with a third collection cavity 421, and the third collection cavity 421 communicates with the second chamber 312.

[0260] The battery 100 further includes a third pressure relief mechanism 51 disposed in at least one first wall portion 41, and the third pressure relief mechanism 51 is used for discharging the discharge in the second collection cavity 411. The battery 100 further includes a fourth pressure relief mechanism 52 disposed in at least one second wall portion 42, and the fourth pressure relief mechanism 52 is used for discharging the discharge in the third collection cavity 421.

[0261] According to the battery 100 of the embodiments of the present application, the first collection cavity 31 is divided into the first chamber 311 and the second chamber 312 by the blocking piece 34, the first chamber 311 and the second chamber 312 are independent of each other, the influence of the discharge discharged by the first pressure relief mechanism 111 on the second layer of battery monomers 20 can be reduced, and the influence of the discharge discharged by the second pressure relief mechanism 211 on the first layer of battery monomers 10 can be reduced, thereby reducing the risk of heat runaway spreading and improving the reliability of the battery 100.

[0262] According to some embodiments of the present application, please refer to FIGS. 5 to 8, the embodiments of the present application provide a battery 100, which includes a first layer of battery monomers 10, a second layer of battery monomers 20, an isolation component 30, a box 40, a first cover 61 and a second cover 62.

[0263] The first layer of battery cells 10 and the second layer of battery cells 20 are arranged in a stack along a first direction X, the first direction X being parallel to the direction of gravity. The isolation component 30 is located between the first layer of battery cells 10 and the second layer of battery cells 20 along the first direction X. The first layer of battery cells 10 comprises a plurality of first battery cells 11, each first battery cell 11 being provided with a first pressure relief mechanism 111 on a side facing the isolation component 30. The second layer of battery cells 20 comprises a plurality of second battery cells 21, each second battery cell 21 being provided with a second pressure relief mechanism 211 on a side facing the isolation component 30. The isolation component 30 has a first collection cavity 31 inside for collecting emissions from the first battery cells 11 when the first pressure relief mechanisms 111 are actuated and / or collecting emissions from the second battery cells 21 when the second pressure relief mechanisms 211 are actuated. The isolation component 30 has a first surface 32 facing the first layer of battery cells 10 and a second surface 33 facing the second layer of battery cells 20, the first surface 32 being provided with a first through hole 321 communicating with the first collection cavity 31, and the second surface 33 being provided with a second through hole 331 communicating with the first collection cavity 31.

[0264] The isolation component 30 comprises a barrier 34 arranged inside the first collection cavity 31, the barrier 34 being spaced apart from the first through hole 321 along the first direction X, the barrier 34 being spaced apart from the second through hole 331 along the first direction X, and a projection of the barrier 34 covering the first through hole 321 and the second through hole 331.

[0265] The isolation component 30 comprises a first plate body 35 and a second plate body 36 oppositely arranged along a first direction X, and the first collection cavity 31 is located between the first plate body 35 and the second plate body 36; the first plate body 35 comprises a first surface 32 and a third surface 37 oppositely arranged along the first direction X, and the second plate body 36 comprises a second surface 33 and a fourth surface 38 oppositely arranged along the first direction X. The barrier 34 comprises a first flow guide 341 having a first end 341a and a second end 341b, the first end 341a is connected to the third surface 37, and the second end 341b is spaced apart from the first through hole 321, and the projection of the first flow guide 341 covers the first through hole 321 along the first direction X. From the first end 341a to the second end 341b, the distance between the first flow guide 341 and the third surface 37 gradually increases. The barrier 34 further comprises a second flow guide 342 having a third end 342a and a fourth end 342b, the third end 342a is connected to the fourth surface 38, and the fourth end 342b is spaced apart from the second through hole 331, and the projection of the second flow guide 342 covers the second through hole 331 along the first direction X. From the third end 342a to the fourth end 342b, the distance between the second flow guide 342 and the fourth surface 38 gradually increases. In some embodiments, the fourth end 342b is connected to the second end 341b. The box body 40 comprises two first side walls 43 oppositely arranged along a second direction Y, and the isolation component 30 is connected to the two first side walls 43, and the second direction Y is perpendicular to the first direction X; each first side wall 43 comprises a first wall portion 41 and a second wall portion 42 arranged along the first direction X, the first layer of battery monomers 10 is located between the first wall portions 41 of the two first side walls 43, and the second layer of battery monomers 20 is located between the second wall portions 42 of the two first side walls 43. The interior of the first side wall 43 is formed with a fifth collection cavity 431, and the fifth collection cavity 431 is in communication with the first collection cavity 31. The battery 100 further comprises a fifth pressure relief mechanism 53 arranged in the first side wall 43, and the fifth pressure relief mechanism 53 is used for discharging the discharge in the fifth collection cavity 431.

[0266] According to the battery 100 of the embodiment of the present application, the first flow guide 341 is arranged to guide the discharge entering the first collection cavity 31 through the first through hole 321, thereby reducing the risk of affecting the second layer of battery monomers 20 by flowing toward the second through hole 331; the second flow guide 342 is arranged to guide the discharge entering the first collection cavity 31 through the second through hole 331, thereby reducing the risk of affecting the first layer of battery monomers 10 by flowing toward the first through hole 321, thereby improving the reliability of the battery 100.

[0267] Although the present application has been described with reference to preferred embodiments, various modifications can be made to the application without departing from the scope of the application. In particular, the technical features mentioned in the various embodiments can be combined in any way, provided that there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery comprising: a first layer of battery cells and a second layer of battery cells, the first layer of battery cells and the second layer of battery cells being arranged in a stack along a first direction; a separation component, located between the first layer of battery cells and the second layer of battery cells along the first direction; wherein the first layer of battery cells comprises a plurality of first battery cells, a side of the first battery cells facing the separation component being provided with a first pressure relief mechanism, the second layer of battery cells comprises a plurality of second battery cells, a side of the second battery cells facing the separation component being provided with a second pressure relief mechanism; the separation component having a first collection cavity inside, the first collection cavity being configured to collect emissions of the first battery cells when the first pressure relief mechanism is actuated, and being configured to collect emissions of the second battery cells when the second pressure relief mechanism is actuated.

2. The battery of claim 1, wherein, the separation component having a first surface facing the first layer of battery cells and a second surface facing the second layer of battery cells, the first surface being provided with a first through hole in communication with the first collection cavity, the first through hole being configured to correspond to the first pressure relief mechanism, the second surface being provided with a second through hole in communication with the first collection cavity, the second through hole being configured to correspond to the second pressure relief mechanism.

3. The battery of claim 2, wherein, the separation component comprising a barrier, the barrier being disposed inside the first collection cavity; along the first direction, the barrier is spaced apart from the first through hole, the barrier is spaced apart from the second through hole, a projection of the barrier covering the first through hole and the second through hole.

4. The battery of claim 3, wherein, the barrier separates the first collection cavity into a first chamber and a second chamber, the first through hole being in communication with the first chamber, the second through hole being in communication with the second chamber.

5. The battery of claim 4, wherein, the battery further comprises a box, the box comprising two first wall portions oppositely arranged along a second direction, the first layer of battery cells being disposed between the two first wall portions, the separation component connecting the two first wall portions, the second direction being perpendicular to the first direction; the first wall portion has a second collection cavity formed inside, the second collection cavity being in communication with the first chamber.

6. The battery of claim 5, wherein, the battery further comprises a third pressure relief mechanism, the third pressure relief mechanism being disposed on at least one of the first wall portions, the third pressure relief mechanism being configured to release the emissions in the second collection cavity.

7. The battery of claim 5 or 6, wherein, the separation component is integrally formed with or welded to the two first wall portions.

8. The battery of any one of claims 5-7, wherein, the box comprises two second wall portions oppositely arranged along the second direction, the second layer of battery cells being disposed between the two second wall portions, the separation component connecting the two second wall portions; the second wall portion has a third collection cavity formed inside, the third collection cavity being in communication with the second chamber.

9. The battery of claim 8, wherein, the battery further comprises a fourth pressure relief mechanism, the fourth pressure relief mechanism being disposed on at least one of the second wall portions, the fourth pressure relief mechanism being configured to release the emissions in the third collection cavity.

10. The battery of claim 8 or 9, wherein, the separation component is integrally formed with or welded to the two second wall portions.

11. The battery of any one of claims 3-10, wherein, The isolation component includes a first plate body and a second plate body oppositely arranged along the first direction, and the first collection cavity is located between the first plate body and the second plate body. The first plate body includes the first surface and a third surface oppositely arranged along the first direction, and the second plate body includes the second surface and a fourth surface oppositely arranged along the first direction.

12. The battery of claim 11, wherein, The barrier includes a first flow guide having a first end and a second end, the first end is connected to the third surface, and the second end is spaced apart from the first through hole, and the projection of the first flow guide covers the first through hole along the first direction.

13. The battery of claim 12, wherein, The distance between the first flow guide and the third surface gradually increases from the first end to the second end.

14. The battery of claim 12 or 13, wherein, The barrier further includes a second flow guide having a third end and a fourth end, the third end is connected to the fourth surface, and the fourth end is spaced apart from the second through hole, and the projection of the second flow guide covers the second through hole along the first direction.

15. The battery of claim 14, wherein, The distance between the second flow guide and the fourth surface gradually increases from the third end to the fourth end.

16. The battery of any one of claims 12-15, wherein, The battery further includes a box body including two first side walls oppositely arranged along a second direction, and the isolation component connects the two first side walls, and the second direction is perpendicular to the first direction. Each of the first side walls includes a first wall portion and a second wall portion arranged along the first direction, the first layer of battery cells is located between the first wall portions of the two first side walls, and the second layer of battery cells is located between the second wall portions of the two first side walls.

17. The battery of claim 16, wherein, The interior of the first side wall is formed with a fifth collection cavity, and the fifth collection cavity is in communication with the first collection cavity.

18. The battery of claim 17, wherein, The battery further includes a fifth pressure relief mechanism arranged on the first side wall, and the fifth pressure relief mechanism is used for discharging the discharge material in the fifth collection cavity.

19. The battery of claim 8 or 16, wherein, The battery further includes: A first cover body connected to the two first wall portions; A second cover body connected to the two second wall portions; The second cover body is oppositely arranged with the first cover body along the first direction, the isolation component is located between the first cover body and the second cover body, the first layer of battery cells is located between the first cover body and the isolation component, and the second layer of battery cells is located between the second cover body and the isolation component.

20. The battery of claim 19, wherein, The first layer of battery cells is connected to the first cover body, and the second layer of battery cells is connected to the second cover body.

21. The battery of claim 19 or 20, wherein, The interior of the first cover body is formed with a first flow channel for containing heat exchange medium, and the interior of the second cover body is formed with a second flow channel for containing heat exchange medium.

22. The battery of any one of claims 19-21, wherein, The first layer of battery cells includes a plurality of first battery cell groups. The battery further includes: A first partition connected to the first cover body and located between adjacent two first battery cell groups.

23. The battery of claim 22, wherein, The first battery cell group is connected to the first partition.

24. The battery of claim 22 or 23, wherein, The first partition is integrally formed with or welded to the first cover body.

25. The battery of any one of claims 22-24, wherein, The interior of the first partition is formed with a third flow channel for containing heat exchange medium.

26. The battery of any one of claims 19-25, wherein, The second layer of battery cells comprises a plurality of second battery cell groups; The battery further comprises: A second partition connected to the second cover and located between two adjacent second battery cell groups.

27. The battery of claim 26, wherein, The second battery cell groups are connected to the second partition.

28. The battery of claim 26 or 27, wherein, The second partition is integrally formed with or welded to the second cover.

29. The battery of any one of claims 26-28, wherein, The second partition has a fourth flow channel formed therein to accommodate a heat exchange medium.

30. The battery of claim 8 or 16, wherein, The first wall portion and the second wall portion adjacent thereto are integrally formed.

31. The battery of any one of claims 1-30, wherein, The first direction is parallel to the direction of gravity.

32. An electric device comprising the battery of any one of claims 1-31.

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