Battery and electric device

Abstract

Provided are a battery (100) and an electric device. The battery (100) comprises a case (10), a first layer of battery cells (20) and a second layer of battery cells (30). The case (10) comprises a case body (11), a first case cover (12) and a second case cover (13), wherein the case body (11) has a first opening (11a) and a second opening (11b) at two ends in a first direction, the first case cover (12) covers the first opening (11a), and the second case cover (13) covers the second opening (11b). The first layer of battery cells (20) and the second layer of battery cells (30) are disposed in the case (10), and are stacked in the first direction, wherein the first layer of battery cells (20) is connected to the first case cover (12) and supported by the first case cover (12), and the second layer of battery cells (30) is connected to the second case cover (13) and supported by the second case cover (13). The assembly efficiency can be improved.

Description

Battery and electric device Cross-reference to related applications

[0001] The present application claims priority to Chinese Patent Application No. CN202410634390.1, 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 assembly efficiency of the battery is a problem that cannot be ignored. Therefore, how to improve the assembly efficiency of the battery is an urgent technical problem to be solved in the battery technology. SUMMARY

[0005] The present application provides a battery and an electric device, which can improve the assembly efficiency.

[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 box body, a first layer of battery monomers and a second layer of battery monomers. The box body includes a box body, a first box cover and a second box cover, the two ends of the box body along the first direction are respectively provided with a first opening and a second opening, the first box cover is covered on the first opening, and the second box cover is covered on the second opening. The first layer of battery monomers and the second layer of battery monomers are arranged in the box body, and the first layer of battery monomers and the second layer of battery monomers are arranged in layers along the first direction. Among them, the first layer of battery monomers is connected to the first box cover and is carried by the first box cover; the second layer of battery monomers is connected to the second box cover and is carried by the second box cover.

[0008] According to the battery provided in the embodiments of the present application, the first layer of battery monomers and the second layer of battery monomers are arranged in a stacked manner along the first direction, which can improve the space utilization of the inside of the box in the first direction, so that the battery has a higher energy density. The first layer of battery monomers is located in the first space surrounded by the first box cover and the box body, and the second layer of battery monomers is located in the second space surrounded by the second box cover and the box body. The first layer of battery monomers is connected to the first box cover, and the second layer of battery monomers is connected to the second box cover. During the assembly of the battery, the assembly of the first layer of battery monomers and the first box cover and the assembly of the second layer of battery monomers and the second box cover can be simultaneously realized, thereby improving the assembly efficiency. Meanwhile, the first layer of battery monomers is carried by the first box cover, the gravity of the first layer of battery monomers is applied to the first box cover, the first box cover provides an acting force for the first layer of battery monomers to overcome the gravity, the second layer of battery monomers is carried by the second box cover, the gravity of the second layer of battery monomers is applied to the second box cover, and the second box cover provides an acting force for the second layer of battery monomers to overcome the gravity, thereby improving the assembly stability.

[0009] According to some embodiments of the present application, the inside of the first box cover is formed with a first flow channel for accommodating a heat exchange medium, and the inside of the second box cover is formed with a second flow channel for accommodating the heat exchange medium.

[0010] In the above scheme, the arrangement of the first flow channel can improve the heat exchange efficiency of the first layer of battery monomers, thereby facilitating the improvement of the reliability of the battery. The arrangement of the second flow channel can improve the heat exchange efficiency of the second layer of battery monomers, thereby facilitating the improvement of the reliability of the battery.

[0011] According to some embodiments of the present application, the first layer of battery monomers comprises a first group of battery monomers and a second group of battery monomers which are arranged in a spaced manner along a second direction, and the second direction is perpendicular to the first direction. The battery further comprises a first partition piece which is connected to the first box cover and located between the first group of battery monomers and the second group of battery monomers.

[0012] In the above scheme, the arrangement of the first partition piece can improve the installation stability of the first group of battery monomers and the second group of battery monomers.

[0013] According to some embodiments of the present application, the first group of battery monomers and the second group of battery monomers are both connected to the first partition piece.

[0014] In the above scheme, the gravity of the first group of battery monomers and the second group of battery monomers is applied to the first partition piece, and the first partition piece provides an acting force for the first group of battery monomers and the second group of battery monomers to overcome the gravity.

[0015] According to some embodiments of the present application, the first partition piece is integrally formed with or welded to the first box cover.

[0016] In the above scheme, the first partition piece is integrally formed with the first box cover, so that the structural strength is improved. The first partition piece is welded to the first box cover, so that the manufacturing difficulty is low.

[0017] According to some embodiments of the present application, the first partition piece is internally formed with a third flow channel for containing a heat exchange medium.

[0018] In the above scheme, the third flow channel is arranged, so that the temperature of the first battery monomer group and the second battery monomer group is adjusted, and the reliability of the battery is improved.

[0019] According to some embodiments of the present application, the second layer of battery monomers includes a third battery monomer group and a fourth battery monomer group arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; the battery further includes a second partition piece connected to the second box cover and located between the third battery monomer group and the fourth battery monomer group.

[0020] In the above scheme, the second partition piece is arranged, so that the installation stability of the third battery monomer group and the fourth battery monomer group is improved.

[0021] According to some embodiments of the present application, the third battery monomer group and the fourth battery monomer group are both connected to the second partition piece.

[0022] In the above scheme, the gravity of the third battery monomer group and the fourth battery monomer group is applied to the second partition piece, and the second partition piece provides an action force to overcome the gravity for the third battery monomer group and the fourth battery monomer group.

[0023] According to some embodiments of the present application, the second partition piece is integrally formed with the second box cover or is welded to the second box cover.

[0024] In the above scheme, the second partition piece is integrally formed with the second box cover, so that the structural strength is improved. The second partition piece is welded to the second box cover, so that the manufacturing difficulty is low.

[0025] According to some embodiments of the present application, the second partition piece is internally formed with a fourth flow channel for containing a heat exchange medium.

[0026] In the above scheme, the fourth flow channel is arranged, so that the temperature of the third battery monomer group and the fourth battery monomer group is adjusted, and the reliability of the battery is improved.

[0027] According to some embodiments of the present application, the box body includes an isolation component, and the isolation component is located between the first layer of battery monomers and the second layer of battery monomers along the first direction.

[0028] In the above scheme, the isolation component is arranged to isolate the first layer of battery monomers from the second layer of battery monomers, thereby reducing the influence of the first battery monomer thermal runaway of the first layer of battery monomers on the second layer of battery monomers and reducing the influence of the second battery monomer thermal runaway of the second layer of battery monomers on the first layer of battery monomers.

[0029] According to some embodiments of the present application, the first layer of battery monomers includes a plurality of first battery monomers, and the side of the first battery monomers facing the isolation component is provided with a first pressure relief mechanism; the second layer of battery monomers includes a plurality of second battery monomers, and the side of the second battery monomers facing the isolation component is provided with a second pressure relief mechanism; the isolation component has a first collection cavity inside, which is used to collect the emissions of the first battery monomers when the first pressure relief mechanism is actuated and / or collect the emissions of the second battery monomers when the second pressure relief mechanism is actuated.

[0030] In the above scheme, the first layer of battery monomers and the second layer of battery monomers share the first collection cavity, which is conducive to saving space inside the battery and improving the energy density of the battery.

[0031] 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 arranged corresponding to the first pressure relief mechanism, and the second surface is provided with a second through hole communicating with the first collection cavity, the second through hole is arranged corresponding to the second pressure relief mechanism.

[0032] In the above scheme, the first through hole is arranged corresponding to the first pressure relief mechanism, and the second through hole is arranged corresponding to the second pressure relief mechanism, which facilitates the collection of the emissions by the first collection cavity, thereby reducing the risk of the emissions short-circuiting the first battery monomers and / or the second battery monomers, and also reducing the risk of thermal runaway spreading, thereby improving the reliability of the battery.

[0033] According to some embodiments of the present application, the isolation component includes a first plate body and a second plate body arranged opposite to each other along a 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 arranged opposite to each other along the first direction, and the second plate body includes a second surface and a fourth surface arranged opposite to each other along the first direction.

[0034] 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 arranged opposite to each other along the first direction and define the first collection cavity, which is simple in structure and easy to manufacture.

[0035] According to some embodiments of the present application, the isolation component includes a blocking piece arranged in the first collecting cavity; along the first direction, the blocking piece is arranged apart from the first through hole and arranged apart from the second through hole, and a projection of the blocking piece covers the first through hole and the second through hole.

[0036] In the above scheme, the blocking piece is arranged in the first collecting cavity, and a projection of the blocking piece covers the first through hole and the second through hole, so that the blocking piece can block the exhaust emitted by the first pressure relief mechanism and block the exhaust emitted by the second pressure relief mechanism, thereby reducing the influence of the exhaust emitted by the first pressure relief mechanism on the second battery monomer and reducing the influence of the exhaust emitted by the second pressure relief mechanism on the first battery monomer, thereby improving the reliability of the battery.

[0037] 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, and a projection of the first flow guide piece covers the first through hole.

[0038] 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 a projection of the first flow guide piece covers the first through hole, so that the exhaust entering the first collecting cavity through the first through hole can be guided by the first flow guide piece, thereby reducing the risk of the exhaust flowing directly to the second through hole.

[0039] According to some embodiments of the present application, the distance between the first flow guide piece and the third surface gradually increases from the first end to the second end.

[0040] In the above scheme, the distance between the first flow guide piece and the third surface gradually increases from the first end to the second end, which facilitates the first flow guide piece to change the flow direction of the exhaust entering the first collecting cavity from the first through hole.

[0041] 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, and a projection of the second flow guide piece covers the second through hole.

[0042] 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 a projection of the second flow guide piece covers the second through hole, so that the exhaust entering the first collecting cavity through the second through hole can be guided by the second flow guide piece, thereby reducing the risk of the exhaust flowing directly to the first through hole.

[0043] According to some embodiments of the present application, the distance between the second flow guide piece and the fourth surface gradually increases from the third end to the fourth end.

[0044] 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 collecting cavity from the second through hole.

[0045] According to some embodiments of the present application, the box body includes two first side walls oppositely arranged along a second direction, the isolation component connects the two first side walls, and the second direction is perpendicular to the first direction; each first side wall includes a first wall part and a second wall part arranged along the first direction, the first layer of battery monomers is located between the first wall parts of the two first side walls, and the second layer of battery monomers is located between the second wall parts of the two first side walls.

[0046] In the above scheme, the isolation component connects the two first side walls, so as to fix the isolation component; the isolation component and the two first wall parts are connected to form a space for accommodating the first layer of battery monomers, so as to protect the first layer of battery monomers; and the isolation component and the two second wall parts are connected to form a space for accommodating the second layer of battery monomers, so as to protect the second layer of battery monomers.

[0047] According to some embodiments of the present application, the inside of the first side wall is formed with a second collecting cavity, and the second collecting cavity is in communication with the first collecting cavity.

[0048] In the above scheme, the second collecting cavity can be in communication with the first collecting cavity, so that the exhaust in the first collecting cavity can flow to the second collecting cavity, and more exhaust can be accommodated.

[0049] According to some embodiments of the present application, the battery further includes a third pressure relief mechanism, the third pressure relief mechanism is arranged on the first side wall, and the third pressure relief mechanism is used for relieving the exhaust in the second collecting cavity.

[0050] In the above scheme, the third pressure relief mechanism is arranged, so as to relieve the exhaust in the second collecting cavity when the pressure in the second collecting cavity reaches a threshold value, and the reliability of the battery is improved.

[0051] According to some embodiments of the present application, the first direction is parallel to the direction of gravity.

[0052] In the above scheme, the first layer of battery monomers and the second layer of battery monomers are arranged in a stack along the first direction, so that the space in the direction of gravity can be reasonably utilized, and the space utilization rate is improved.

[0053] In a second aspect, the embodiments of the present application also provide a power utilization device including the battery provided by any of the above embodiments.

[0054] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. 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 effort based on these drawings.

[0056] Fig. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application;

[0057] Fig. 2 is a sectional view of a battery according to some embodiments of the present application;

[0058] Fig. 3 is an exploded schematic diagram of a partial structure of a battery according to some embodiments of the present application;

[0059] Fig. 4 is a schematic diagram of the assembly state of a first layer of battery monomers and a first tank cover, and the assembly state of a second layer of battery monomers and a second tank cover according to some embodiments of the present application;

[0060] Fig. 5 is a structural schematic diagram of a separation component according to some embodiments of the present application;

[0061] Fig. 6 is a structural exploded schematic diagram of a battery according to some embodiments of the present application.

[0062] In the drawings, the drawings are not drawn according to the actual scale.

[0063] Label description: 100-battery; 10-box; 10a-first space; 10b-second space; 11-box body; 11a-first opening; 11b-second opening; 111-first side wall; 111a-first wall part; 111b-second wall part; 111c-second collection cavity; 112-second side wall; 12-first box cover; 12a-first body; 12b-first flange; 121-first flow channel; 13-second box cover; 13a-second body; 13b-second flange; 131-second flow channel; 14-isolation component; 14a-first surface; 14b-second surface; 14c-third surface; 14d-fourth surface; 141-first collection cavity; 142-first through hole; 143-second through hole; 144-first plate body; 145-second plate body; 146-first protruding part; 147-second protruding part; 15-barrier; 151-first flow guide; 151a-first end; 151b-second end; 152-second flow guide; 152a-third end; 152b-fourth end; 20-first layer of battery cells; 20a-first battery cell group; 20b-second battery cell group; 21-first battery cell; 211-first pressure relief mechanism; 30-second layer of battery cells; 30a-third battery cell group; 30b-fourth battery cell group; 31-second battery cell; 311-second pressure relief mechanism; 40-first partition; 41-third flow channel; 50-second partition; 51-fourth flow channel; 60-third pressure relief mechanism; 200-controller; 300-motor; 1000-vehicle; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0064] In order to make the purpose, 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 skilled in the art without creative work fall within the scope of protection of the present application.

[0065] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, rather than to describe a particular order or primary and secondary relationship.

[0066] Reference within this application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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 those skilled in the art will appreciate, embodiments described, and references to specific techniques, also work in combination with other embodiments.

[0067] In the description of the application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0068] 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.

[0069] "Multiple" appearing in this application means more than two (including two), and similarly, "multiple groups" means more than two groups (including two groups), and "multiple pieces" means more than two pieces (including two pieces).

[0070] 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.

[0071] In some embodiments, the battery can be a battery pack, and the battery pack includes a box body and a battery monomer, and the battery monomer or the battery module is contained in the box body.

[0072] In some embodiments, the box body can be part of the chassis structure of the vehicle. For example, part of the box body can be at least part of the floor of the vehicle, or part of the box body can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0073] 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.

[0074] 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.

[0075] The battery cell can be, but is not limited to, a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc.

[0076] The battery cell includes a housing and a pressure relief mechanism disposed in the housing, the pressure relief mechanism being actuable to release internal pressure and temperature of the housing.

[0077] 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, for example, a rupture disc, 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.

[0078] The term "actuation" as 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 part of the pressure relief mechanism being broken, shattered, 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 outward from the actuated part as the discharge. In this way, the battery cell can be relieved of pressure and temperature under controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0079] The discharge from the battery cell as 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.

[0080] The development of battery technology needs to consider various design factors, such as performance parameters such as energy density, discharge capacity, charge-discharge rate, etc., in addition to the assembly efficiency of the battery.

[0081] In some embodiments, the battery generally includes a plurality of battery cell groups, and at least two of the plurality of battery cell groups are stacked in one direction. In order to improve the assembly stability, the battery cell group and the box are bonded by glue, but the glue needs a certain time to solidify. When the plurality of battery cell groups are stacked, after each layer of battery cell group and box is assembled, the assembly of the next layer of battery cell group needs to wait for the glue to solidify, which makes the assembly time longer and the assembly efficiency lower.

[0082] In view of this, the battery provided in the present application comprises a box body, a first layer of battery monomers and a second layer of battery monomers. The box body comprises a box body, a first box cover and a second box cover, the two ends of the box body along the first direction are respectively provided with a first opening and a second opening, the first box cover covers the first opening, and the second box cover covers the second opening. The first layer of battery monomers and the second layer of battery monomers are arranged in the box body, and the first layer of battery monomers and the second layer of battery monomers are arranged in a stacked manner along the first direction. Among them, the first layer of battery monomers is connected to the first box cover and is carried by the first box cover, and the second layer of battery monomers is connected to the second box cover and is carried by the second box cover. The battery can improve the assembly efficiency.

[0083] In such a battery, the first layer of battery monomers and the second layer of battery monomers are arranged in a stacked manner along the first direction, which can improve the space utilization of the inside of the box body in the first direction, so that the battery has a higher energy density. The first layer of battery monomers is connected to the first box cover, and the second layer of battery monomers is connected to the second box cover. During the assembly of the battery, the assembly of the first layer of battery monomers and the first box cover and the assembly of the second layer of battery monomers and the second box cover can be realized synchronously, thereby improving the assembly efficiency. At the same time, the first layer of battery monomers is carried by the first box cover, the gravity of the first layer of battery monomers is applied to the first box cover, the first box cover provides an action force for the first layer of battery monomers to overcome the gravity, the second layer of battery monomers is carried by the second box cover, the gravity of the second layer of battery monomers is applied to the second box cover, and the second box cover provides an action force for the second layer of battery monomers to overcome the gravity, thereby improving the assembly stability.

[0084] The battery disclosed in the embodiments of the present application can be used in, but is not limited to, an electric device such as a vehicle, a ship or an aircraft. The power supply system of the electric device can be composed of the battery disclosed in the present application.

[0085] 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 spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft.

[0086] The following embodiments are described by taking a vehicle as an example for convenience of description.

[0087] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle provided by 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 automobile, a hybrid automobile, or a range extended automobile, etc. 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 source of the vehicle 1000, for example, for power demand of the circuit system of the vehicle 1000, such as for power demand of starting, navigation, and running of the vehicle 1000.

[0088] The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to supply power to the motor 300, for example, for power demand of starting, navigation, and running of the vehicle 1000.

[0089] In some embodiments of the present application, the battery 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0090] Please refer to FIG. 2 to FIG. 4, FIG. 2 is a sectional view of a battery provided by some embodiments of the present application, FIG. 3 is an exploded schematic diagram of a partial structure of a battery provided by some embodiments of the present application, and FIG. 4 is a schematic diagram of an assembled state of a first layer of battery monomers and a first box cover, and an assembled state of a second layer of battery monomers and a second box cover provided by some embodiments of the present application.

[0091] Embodiments of the present application provide a battery 100, which includes a box body 10, a first layer of battery monomers 20, and a second layer of battery monomers 30. The box body 10 includes a box body 11, a first box cover 12, and a second box cover 13, the box body 11 has a first opening 11a and a second opening 11b at two ends along a first direction X, the first box cover 12 covers the first opening 11a, and the second box cover 13 covers the second opening 11b. The first layer of battery monomers 20 and the second layer of battery monomers 30 are arranged in the box body 10, and the first layer of battery monomers 20 and the second layer of battery monomers 30 are arranged in a stack along the first direction X. Among them, the first layer of battery monomers 20 is connected to the first box cover 12 and is carried by the first box cover 12, and the second layer of battery monomers 30 is connected to the second box cover 13 and is carried by the second box cover 13.

[0092] The inside of the box body 11 forms an accommodating space, and the first opening 11a and the second opening 11b are two openings of the accommodating space in the first direction X, so as to facilitate the first layer of battery monomers 20 to enter the accommodating space from the first opening 11a and the second layer of battery monomers 30 to enter the accommodating space from the second opening 11b.

[0093] The first box cover 12 covers the first opening 11a, and the first box cover 12 and the box body 11 enclose a first space 10a, and the first layer of battery cells 20 is accommodated in the first space 10a. The first box cover 12 cooperates with the box body 11 to protect the first layer of battery cells 20.

[0094] The second box cover 13 covers the second opening 11b, and the second box cover 13 and the box body 11 enclose a second space 10b, and the second layer of battery cells 30 is accommodated in the second space 10b. The second box cover 13 cooperates with the box body 11 to protect the second layer of battery cells 30.

[0095] The first layer of battery cells 20 and the second layer of battery cells 30 are arranged in a first direction X, which can improve the space utilization of the inside of the box body 10 in the first direction X, so that the battery 100 has a higher energy density.

[0096] In some embodiments, the first layer of battery cells 20 is bonded to the first box cover 12 by glue, and the second layer of battery cells 30 is bonded to the second box cover 13 by glue. Since the first layer of battery cells 20 is assembled with the first box cover 12 and the second layer of battery cells 30 is assembled with the second box cover 13, the bonding of the first layer of battery cells 20 and the first box cover 12 and the bonding of the second layer of battery cells 30 and the second box cover 13 can be achieved simultaneously, saving the waiting time for glue solidification and facilitating the improvement of assembly efficiency.

[0097] In other embodiments, the first layer of battery cells 20 can also be connected to the first box cover 12 by other means, such as welding, threaded connection, etc. Similarly, the second layer of battery cells 30 can also be connected to the second box cover 13 by other means, such as welding, threaded connection, etc.

[0098] The first layer of battery cells 20 is carried by the first box cover 12, which means that the weight of the first layer of battery cells 20 is applied to the first box cover 12. The second layer of battery cells 30 is carried by the second box cover 13, which means that the weight of the second layer of battery cells 30 is applied to the second box cover 13.

[0099] According to the battery 100 of the embodiment of the present application, the first layer of battery monomers 20 is connected to the first box cover 12, and the second layer of battery monomers 30 is connected to the second box cover 13. During the assembly of the battery 100, the assembly of the first layer of battery monomers 20 and the first box cover 12 and the assembly of the second layer of battery monomers 30 and the second box cover 13 can be simultaneously achieved, thereby improving the assembly efficiency. Meanwhile, the first layer of battery monomers 20 is carried by the first box cover 12, the gravity of the first layer of battery monomers 20 is applied to the first box cover 12, the first box cover 12 provides the first layer of battery monomers 20 with a force to overcome the gravity, the second layer of battery monomers 30 is carried by the second box 10, the gravity of the second layer of battery monomers 30 is applied to the second box cover 13, and the second box cover 13 provides the second layer of battery monomers 30 with a force to overcome the gravity, thereby improving the assembly stability.

[0100] Please refer to FIG. 3. In some embodiments, the first box cover 12 comprises a first body 12a and two first flanges 12b. The first body 12a is arranged perpendicularly to the first direction X. The two first flanges 12b are located at two ends of the first body 12a in the second direction Y, and the first flanges 12b protrude from the first body 12a towards the second box cover 13. The ends of the first flanges 12b away from the first body 12a are connected to the box body 11.

[0101] The first flanges 12b are arranged to cooperate with the box body 11, which can limit the first layer of battery monomers 20 in the second direction Y, thereby facilitating the assembly of the first layer of battery monomers 20 and the first box cover 12.

[0102] Please refer to FIG. 3. In some embodiments, the second box cover 13 comprises a second body 13a and two second flanges 13b. The second body 13a is arranged perpendicularly to the first direction X. The two second flanges 13b are located at two ends of the second body 13a in the second direction Y, and the second flanges 13b protrude from the second body 13a towards the first box cover 12. The ends of the second flanges 13b away from the second body 13a are connected to the box body 11.

[0103] The second flanges 13b are arranged to cooperate with the box body 11, which can limit the second layer of battery monomers 30 in the second direction Y, thereby facilitating the assembly of the second layer of battery monomers 30 and the second box cover 13.

[0104] Please refer to FIG. 4. According to some embodiments of the present application, the inside of the first box cover 12 is formed with a first flow channel 121 for containing a heat exchange medium, and the inside of the second box cover 13 is formed with a second flow channel 131 for containing a heat exchange medium.

[0105] The first box cover 12 is a hollow structure, and the first box cover 12 can be integrally extruded or injection molded.

[0106] The first box cover 12 can be configured as a single-side open cover structure or a flat plate.

[0107] The second box cover 13 is a hollow structure, which can be integrally extruded or injection molded.

[0108] The second box cover 13 can be configured as a single-side open cover structure or a flat plate.

[0109] In the above scheme, the first flow channel 121 is arranged to improve the heat exchange efficiency of the first layer of battery monomers 20, thereby facilitating the reliability of the battery 100. The second flow channel 131 is arranged to improve the heat exchange efficiency of the second layer of battery monomers 30, thereby facilitating the reliability of the battery 100.

[0110] Please refer to FIG. 4, according to some embodiments of the present application, the first layer of battery monomers 20 includes a first battery monomer group 20a and a second battery monomer group 20b arranged at intervals along a second direction Y, the second direction Y being perpendicular to the first direction X. The battery 100 further includes a first partition 40 connected to the first box cover 12 and located between the first battery monomer group 20a and the second battery monomer group 20b.

[0111] The first battery monomer group 20a and the second battery monomer group 20b can each include a plurality of first battery monomers 21, and in each battery monomer group, the plurality of first battery monomers 21 can be arranged in a stacked manner along a third direction Z.

[0112] Along the second direction Y, the first partition 40 is located between the first battery monomer group 20a and the second battery monomer group 20b to separate the first battery monomer group 20a and the second battery monomer group 20b.

[0113] The first partition 40 is connected to the first box cover 12, for example, the first partition 40 is bonded, welded, integrally molded, etc. with the first box cover 12.

[0114] In the above scheme, the first partition 40 is arranged to improve the installation stability of the first battery monomer group 20a and the second battery monomer group 20b.

[0115] In some embodiments, the first layer of battery monomers 20 can further include a fifth battery monomer group, the first battery monomer group 20a, the second battery monomer group 20b and the fifth battery monomer group being arranged at intervals along the second direction Y, and the first partition 40 can be further arranged between the second battery monomer group 20b and the fifth battery monomer group.

[0116] According to some embodiments of the present application, the first battery monomer group 20a and the second battery monomer group 20b are both connected to the first partition 40.

[0117] The first battery cell group 20a and the second battery cell group 20b can be connected to the first partition 40 by adhesion, welding, screwing, or the like.

[0118] In the above scheme, the gravity of the first battery cell group 20a and the second battery cell group 20b is applied to the first partition 40, and the first partition 40 provides the first battery cell group 20a and the second battery cell group 20b with a force to overcome the gravity.

[0119] According to some embodiments of the present application, the first partition 40 is integrally formed with or welded to the first box cover 12.

[0120] The first partition 40 and the first box cover 12 can be integrally extruded or injection molded.

[0121] In the above scheme, the first partition 40 is integrally formed with the first box cover 12 to improve the structural strength. The first partition 40 is welded to the first box cover 12, which is easier to manufacture.

[0122] Referring to FIG. 4, according to some embodiments of the present application, the first partition 40 has a third flow channel 41 formed therein to accommodate a heat exchange medium.

[0123] The heat exchange medium in the third flow channel 41 can be the same as the heat exchange medium in the first flow channel 121.

[0124] The heat exchange medium in the third flow channel 41 can circulate to achieve better temperature regulation. For example, the third flow channel 41 can have two openings, one for the heat exchange medium inlet and the other for the heat exchange medium outlet, which are respectively connected to an external heat exchange medium circulation system to make the heat exchange medium circulate in the third flow channel 41.

[0125] In some embodiments, the third flow channel 41 can be in communication with the first flow channel 121.

[0126] In the above scheme, the third flow channel 41 is provided to regulate the temperature of the first battery cell group 20a and the second battery cell group 20b, which facilitates the reliability of the battery 100.

[0127] Referring to FIG. 4, according to some embodiments of the present application, the second layer of battery cells 30 includes a third battery cell group 30a and a fourth battery cell group 30b spaced apart along a second direction Y perpendicular to the first direction X, and the battery 100 further includes a second partition 50 connected to the second box cover 13 and located between the third battery cell group 30a and the fourth battery cell group 30b.

[0128] The third battery cell group 30a and the fourth battery cell group 30b can each include a plurality of second battery cells 31, and in each battery cell group, the plurality of second battery cells 31 can be stacked along the third direction Z.

[0129] The second partition 50 is located between the third battery cell group 30a and the fourth battery cell group 30b along the second direction Y to separate the third battery cell group 30a and the fourth battery cell group 30b.

[0130] The second partition 50 is connected to the second box cover 13, for example, the second partition 50 is bonded, welded, integrally formed, or the like with the second box cover 13.

[0131] In the above scheme, the arrangement of the second partition 50 can improve the installation stability of the third battery cell group 30a and the fourth battery cell group 30b.

[0132] In some embodiments, the second layer of battery cells 30 can further include a sixth battery cell group, the third battery cell group 30a, the fourth battery cell group 30b, and the sixth battery cell group are arranged at intervals along the second direction Y, and the second partition 50 can be further arranged between the fourth battery cell group 30b and the sixth battery cell group.

[0133] According to some embodiments of the present application, the third battery cell group 30a and the fourth battery cell group 30b are both connected to the second partition 50.

[0134] The third battery cell group 30a and the fourth battery cell group 30b can be connected to the second partition 50 by bonding, welding, threaded connection, or the like.

[0135] In the above scheme, the gravity of the third battery cell group 30a and the fourth battery cell group 30b is applied to the second partition 50, and the second partition 50 provides an action force to overcome the gravity for the third battery cell group 30a and the fourth battery cell group 30b.

[0136] According to some embodiments of the present application, the second partition 50 is integrally formed or welded to the second box cover 13.

[0137] The second partition 50 and the second box cover 13 can be integrally extruded or injection molded.

[0138] In the above scheme, the second partition 50 and the second box cover 13 are integrally formed to improve the structural strength. The second partition 50 and the second box cover 13 are welded to have a lower manufacturing difficulty.

[0139] Please refer to FIG. 4, according to some embodiments of the present application, the second partition 50 is internally formed with a fourth flow channel 51 for accommodating a heat exchange medium.

[0140] The heat exchange medium in the fourth flow channel 51 can be the same as the heat exchange medium in the second flow channel 131.

[0141] The heat exchange medium in the fourth flow channel 51 can be circulated to achieve better temperature regulation. For example, the fourth flow channel 51 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 51.

[0142] In some embodiments, the fourth flow channel 51 can be in communication with the second flow channel 131.

[0143] In the above scheme, the fourth flow channel 51 is provided to adjust the temperature of the third battery monomer group 30a and the fourth battery monomer group 30b, so as to improve the reliability of the battery 100.

[0144] Please refer to FIG. 2 and FIG. 3, according to some embodiments of the present application, the box body 11 includes a separation component 14, which is located between the first layer of battery monomers 20 and the second layer of battery monomers 30 along the first direction X.

[0145] The material of the separation component 14 can be various, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0146] In the above scheme, the separation component 14 is provided to isolate the first layer of battery monomers 20 from the second layer of battery monomers 30, thereby reducing the influence of the thermal runaway of the first battery monomer 21 of the first layer of battery monomers 20 on the second layer of battery monomers 30, and reducing the influence of the thermal runaway of the second battery monomer 31 of the second layer of battery monomers 30 on the first layer of battery monomers 20.

[0147] Please refer to FIG. 3 and FIG. 4, and further refer to FIG. 5, which is a structural schematic diagram of the separation component provided by some embodiments of the present application. According to some embodiments of the present application, the first layer of battery monomers 20 includes a plurality of first battery monomers 21, and the side of the first battery monomer 21 facing the separation component 14 is provided with a first pressure relief mechanism 211; the second layer of battery monomers 30 includes a plurality of second battery monomers 31, and the side of the second battery monomer 31 facing the separation component 14 is provided with a second pressure relief mechanism 311; the inside of the separation component 14 has a first collection cavity 141, which is used to collect the emissions of the first battery monomer 21 when the first pressure relief mechanism 211 is actuated and / or to collect the emissions of the second battery monomer 31 when the second pressure relief mechanism 311 is actuated.

[0148] The isolation component 14 can be provided with a weakened portion (such as a notch, a thinned area, etc.), and when the first pressure relief mechanism 211 is actuated, the discharge released by the first pressure relief mechanism 211 can break the weakened portion and enter the first collection cavity 141; when the second pressure relief mechanism 311 is actuated, the discharge released by the second pressure relief mechanism 311 can break the weakened portion and enter the first collection cavity 141.

[0149] In some embodiments, the isolation component 14 can be formed by an extrusion process, and at least one cavity of the isolation component 14 is formed during the process, and one of the cavities can serve as the first collection cavity 141. In other embodiments, the isolation component 14 can also include two plates, one of which is stamped to form a groove, and the other plate closes the slot of the groove to form the first collection cavity 141.

[0150] The first collection cavity 141 is used to collect the discharge of the first battery monomer 21 when the first pressure relief mechanism 211 is actuated, and / or is used to collect the discharge of the second battery monomer 31 when the second pressure relief mechanism 311 is actuated, so that the first layer of battery monomers 20 and the second layer of battery monomers 30 share the first collection cavity 141. In some embodiments, a plurality of flow guide channels can be provided on the isolation component 14, some of which are used to guide the discharge released by the first pressure relief mechanism 211 of the first layer of battery monomers 20 to the first collection cavity 141, and some of which are used to guide the discharge released by the second pressure relief mechanism 311 of the second layer of battery monomers 30 to the first collection cavity 141.

[0151] The first collection cavity 141 can be a cavity, or a plurality of cavities arranged at intervals.

[0152] In the above scheme, the first layer of battery monomers 20 and the second layer of battery monomers 30 share the first collection cavity 141, which is beneficial to save space inside the battery 100 and improve the energy density of the battery 100.

[0153] Please refer to FIGS. 3-5, according to some embodiments of the present application, the isolation component 14 has a first surface 14a facing the first layer of battery monomers 20 and a second surface 14b facing the second layer of battery monomers 30, the first surface 14a is provided with a first through hole 142 communicating with the first collection cavity 141, the first through hole 142 is provided corresponding to the first pressure relief mechanism 211, the second surface 14b is provided with a second through hole 143 communicating with the first collection cavity 141, the second through hole 143 is provided corresponding to the second pressure relief mechanism 311.

[0154] The first surface 14a and the second surface 14b are two surfaces of the isolation component 14 arranged opposite to each other in the first direction X.

[0155] In some embodiments, the number of the first through holes 142 can be the same as or different from the number of the first pressure relief mechanisms 211. For example, one first through hole 142 can correspond to one first pressure relief mechanism 211, or one first through hole 142 can correspond to a plurality of first pressure relief mechanisms 211.

[0156] In some embodiments, the number of the second through holes 143 can be the same as or different from the number of the second pressure relief mechanisms 311. For example, one second through hole 143 can correspond to one second pressure relief mechanism 311, or one second through hole 143 can correspond to a plurality of second pressure relief mechanisms 311.

[0157] In the above scheme, the first through holes 142 are arranged corresponding to the first pressure relief mechanisms 211, and the second through holes 143 are arranged corresponding to the second pressure relief mechanisms 311, so as to facilitate the collection of the emissions by the first collection cavity 141, thereby reducing the risk of the emissions short-circuiting the first battery monomer 21 and / or the second battery monomer 31, and reducing the risk of the spread of thermal runaway, and improving the reliability of the battery 100.

[0158] Please refer to FIG. 5. According to some embodiments of the present application, the isolation component 14 includes a first plate body 144 and a second plate body 145 arranged opposite to each other along the first direction X, and the first collection cavity 141 is located between the first plate body 144 and the second plate body 145; the first plate body 144 includes a first surface 14a and a third surface 14c arranged opposite to each other along the first direction X, and the second plate body 145 includes a second surface 14b and a fourth surface 14d arranged opposite to each other along the first direction X.

[0159] The third surface 14c and the fourth surface 14d define the first collection cavity 141, the first through hole 142 penetrates the first surface 14a and the third surface 14c, and the second through hole 143 penetrates the second surface 14b and the fourth surface 14d.

[0160] In the above scheme, the first pressure relief mechanisms 211 are arranged opposite to the first plate body 144, and the second pressure relief mechanisms 311 are arranged opposite to the second plate body 145, and the first plate body 144 and the second plate body 145 are arranged opposite to each other along the first direction X and define the first collection cavity 141, so as to facilitate the collection of the emissions by the first collection cavity 141, thereby reducing the risk of the emissions short-circuiting the first battery monomer 21 and / or the second battery monomer 31, and reducing the risk of the spread of thermal runaway, and improving the reliability of the battery 100.

[0161] In some embodiments, the first plate body 144 has a first protruding portion 146 protruding away from the second plate body 145, and the first through hole 142 is arranged in the first protruding portion 146; the second plate body 145 has a second protruding portion 147 protruding away from the first plate body 144, and the second through hole 143 is arranged in the second protruding portion 147.

[0162] The first protruding part 146 is arranged to improve the overall strength of the first plate body 144. The second protruding part 147 is arranged to improve the overall strength of the second plate body 145.

[0163] Referring to FIG. 5, according to some embodiments of the present application, the isolation component 14 comprises a barrier 15 arranged in the first collection cavity 141. In the first direction X, the barrier 15 is spaced apart from the first through hole 142, the barrier 15 is spaced apart from the second through hole 143, and the projection of the barrier 15 covers the first through hole 142 and the second through hole 143.

[0164] The barrier 15 is arranged in the first collection cavity 141, the barrier 15 is spaced apart from the first through hole 142, so that the exhaust emitted by the first battery monomer 21 enters the first collection cavity 141 through the first through hole 142; the barrier 15 is spaced apart from the second through hole 143, so that the exhaust emitted by the second battery monomer 31 enters the first collection cavity 141 through the second through hole 143.

[0165] In some embodiments, the barrier 15 can completely isolate the first through hole 142 and the second through hole 143, so that the first through hole 142 and the second through hole 143 are located in two independent cavities respectively.

[0166] In some embodiments, the barrier 15 can also only separate the first through hole 142 and the second through hole 143, but the first through hole 142 and the second through hole 143 are still located in the same cavity.

[0167] In some embodiments, the first through hole 142 and the second through hole 143 at least partially overlap along the first direction X; or, the first through hole 142 and the second through hole 143 do not overlap along the first direction X.

[0168] After the exhaust discharged by the first pressure relief mechanism 211 enters the first collection cavity 141 through the first through hole 142, the barrier 15 can block the flow of the exhaust along the first direction X, the barrier 15 can slow down the flow speed of the exhaust, and reduce the risk of the exhaust flowing to the second through hole 143. After the exhaust discharged by the second pressure relief mechanism 311 enters the first collection cavity 141 through the second through hole 143, the barrier 15 can block the flow of the exhaust along the first direction X, the barrier 15 can slow down the flow speed of the exhaust, and reduce the risk of the exhaust flowing to the first through hole 142.

[0169] In the above scheme, the blocking piece 15 is arranged in the first collecting cavity 141, and the projection of the blocking piece 15 covers the first through hole 142 and the second through hole 143, the blocking piece 15 can block the exhaust of the first pressure relief mechanism 211 and the exhaust of the second pressure relief mechanism 311, reduce the influence of the exhaust of the first pressure relief mechanism 211 on the second battery monomer 31 and reduce the influence of the exhaust of the second pressure relief mechanism 311 on the first battery monomer 21, thereby improving the reliability of the battery 100.

[0170] Please refer to FIG. 5, according to some embodiments of the present application, the blocking piece 15 includes a first flow guide piece 151, the first flow guide piece 151 has a first end 151a and a second end 151b, the first end 151a is connected to the third surface 14c, and the second end 151b is arranged apart from the first through hole 142, and along the first direction X, the projection of the first flow guide piece 151 covers the first through hole 142.

[0171] The first end 151a and the second end 151b can be arranged in sequence in the first direction X, and the second end 151b can be an end of the first flow guide piece 151 away from the third surface 14c.

[0172] The second end 151b is arranged apart from the first through hole 142, so that the second end 151b does not block the first through hole 142, so as to facilitate the exhaust of the first pressure relief mechanism 211 to enter the first collecting cavity 141 through the first through hole 142.

[0173] Along the first direction X, the projection of the first flow guide piece 151 covers the first through hole 142, so that after the exhaust enters the first collecting cavity 141 through the first through hole 142, the exhaust can be guided by the first flow guide piece 151, and the flow direction of the exhaust is changed.

[0174] In the above scheme, the first end 151a is connected to the third surface 14c, the second end 151b is arranged apart from the first through hole 142, and the projection of the first flow guide piece 151 covers the first through hole 142, so that the exhaust entering the first collecting cavity 141 through the first through hole 142 can be guided by the first flow guide piece 151, thereby reducing the risk of the exhaust flowing directly to the second through hole 143.

[0175] Please refer to FIG. 5, according to some embodiments of the present application, from the first end 151a to the second end 151b, the distance between the first flow guide piece 151 and the third surface 14c gradually increases.

[0176] The distance between the first flow guide 151 and the third surface 14c gradually increases from the first end 151a to the second end 151b in the first direction X, and the first flow guide 151 is inclined relative to the third surface 14c.

[0177] When the discharge of the first pressure relief mechanism 211 enters the first through hole 142, the discharge flows away from the first end 151a under the flow guiding effect of the first flow guide 151, buffers the flow rate of the discharge, and reduces the risk of the discharge directly impacting the second plate body 145.

[0178] In the above scheme, the distance between the first flow guide 151 and the third surface 14c gradually increases from the first end 151a to the second end 151b, which facilitates the first flow guide 151 to change the flow direction of the discharge entering the first collection cavity 141 from the first through hole 142.

[0179] Please refer to FIG. 5. According to some embodiments of the present application, the barrier 15 further includes a second flow guide 152, which has a third end 152a and a fourth end 152b. The third end 152a is connected to the fourth surface 14d, and the fourth end 152b is spaced apart from the second through hole 143. The projection of the second flow guide 152 covers the second through hole 143 in the first direction X.

[0180] The third end 152a and the fourth end 152b can be arranged in sequence in the first direction X, and the fourth end 152b can be an end of the second flow guide 152 facing away from the fourth surface 14d.

[0181] The fourth end 152b is spaced apart from the second through hole 143, so that the fourth end 152b does not block the second through hole 143, to facilitate the discharge of the second pressure relief mechanism 311 to enter the first collection cavity 141 through the second through hole 143.

[0182] In the first direction X, the projection of the second flow guide 152 covers the second through hole 143, so that after the discharge enters the first collection cavity 141 through the second through hole 143, it can be guided by the second flow guide 152 to change the flow direction of the discharge.

[0183] In the above scheme, the third end 152a is connected to the fourth surface 14d, the fourth end 152b is spaced apart from the second through hole 143, and the projection of the second flow guide 152 covers the second through hole 143, so that the discharge entering the first collection cavity 141 through the second through hole 143 can be guided by the second flow guide 152, thereby reducing the risk of the discharge flowing directly to the first through hole 142.

[0184] Please refer to FIG. 5. According to some embodiments of the present application, the distance between the second flow guide 152 and the fourth surface 14d gradually increases from the third end 152a to the fourth end 152b.

[0185] The "distance between the second flow guide 152 and the fourth surface 14d gradually increases from the third end 152a to the fourth end 152b" means that the distance between the second flow guide 152 and the fourth surface 14d gradually increases in the first direction X from the third end 152a to the fourth end 152b, and the second flow guide 152 is arranged obliquely relative to the fourth surface 14d.

[0186] When the discharge of the second pressure relief mechanism 311 enters the second through hole 143, the discharge flows in a direction away from the third end 152a under the flow guiding effect of the second flow guide 152, buffers the flow rate of the discharge, and reduces the risk of the discharge directly impacting the first plate body 144.

[0187] In the above scheme, the distance between the second flow guide 152 and the fourth surface 14d gradually increases from the third end 152a to the fourth end 152b, which facilitates the second flow guide 152 to change the flow direction of the discharge entering the first collection cavity 141 from the second through hole 143.

[0188] Please refer to FIG. 3 and further refer to FIG. 6, which is a structural exploded schematic view of a battery provided by some embodiments of the present application. According to some embodiments of the present application, the box body 11 includes two first side walls 111 arranged oppositely along a second direction Y, the isolation component 14 connects the two first side walls 111, and the second direction Y is perpendicular to the first direction X; each first side wall 111 includes a first wall portion 111a and a second wall portion 111b arranged along the first direction X, the first layer of battery monomers 20 is located between the first wall portions 111a of the two first side walls 111, and the second layer of battery monomers 30 is located between the second wall portions 111b of the two first side walls 111.

[0189] The isolation component 14 connects the two first side walls 111, and the isolation component 14 divides the space between the two first side walls 111 into two spaces, which respectively accommodate the first layer of battery monomers 20 and the second layer of battery monomers 30.

[0190] In each first side wall 111, the first wall portion 111a and the second wall portion 111b can be integrally formed or welded.

[0191] In the above scheme, the isolation component 14 connects the two first side walls 111 to facilitate fixation of the isolation component 14; the isolation component 14 and the two first wall portions 111a form a space for accommodating the first layer of battery monomers 20 to facilitate protection of the first layer of battery monomers 20; the isolation component 14 and the two second wall portions 111b form a space for accommodating the second layer of battery monomers 30 to facilitate protection of the second layer of battery monomers 30.

[0192] In some embodiments, the box body 11 further comprises two second side walls 112 oppositely arranged along a third direction Z, the isolation component 14 is located between the two second side walls 112, the isolation component 14 connects the two second side walls 112, the third direction Z, the second direction Y and the first direction X are perpendicular to each other. The first box cover 12 connects the two second side walls 112, and the second box cover 13 connects the two second side walls 112. The first box cover 12, the isolation component 14, the two first wall portions 111a and the two second side walls 112 enclose a space for accommodating the first layer of battery monomers 20. The second box cover 13, the isolation component 14, the two second wall portions 111b and the two second side walls 112 enclose a space for accommodating the second layer of battery monomers 30.

[0193] Please refer to FIG. 5, according to some embodiments of the present application, the inside of the first side wall 111 is formed with a second collection cavity 111c, the second collection cavity 111c is in communication with the first collection cavity 141.

[0194] The first wall portion 111a and the second wall portion 111b can both be hollow structures, and the internal space of the first wall portion 111a and the internal space of the second wall portion 111b can jointly constitute the second collection cavity 111c.

[0195] In some embodiments, when the blocking piece 15 comprises the first flow guide 151 and the second flow guide 152, the fourth end 152b is connected with the second end 151b, and the first flow guide 151 and the second flow guide 152 can guide the discharge in the first collection cavity 141 towards the second collection cavity 111c.

[0196] In the above scheme, the second collection cavity 111c can be in communication with the first collection cavity 141, so that the discharge in the first collection cavity 141 can flow to the second collection cavity 111c, facilitating the accommodation of more discharge.

[0197] Please refer to FIG. 5, according to some embodiments of the present application, the battery 100 further comprises a third pressure relief mechanism 60, the third pressure relief mechanism 60 is arranged on the first side wall 111, and the third pressure relief mechanism 60 is used for relieving the discharge in the second collection cavity 111c.

[0198] The third pressure relief mechanism 60 can be arranged on one first side wall 111 or two first side walls 111. The third pressure relief mechanism 60 can be arranged on the side of the first side wall 111 away from the first collecting cavity 141, that is, the direction in which the third pressure relief mechanism 60 releases the discharge is away from the first collecting cavity 141.

[0199] In the above scheme, the arrangement of the third pressure relief mechanism 60 facilitates the release of the discharge in the second collecting cavity 111c when the pressure in the second collecting cavity 111c reaches the threshold value, thereby improving the reliability of the battery 100.

[0200] According to some embodiments of the present application, the first direction X is parallel to the direction of gravity.

[0201] In the above scheme, the first layer of battery monomers 20 and the second layer of battery monomers 30 are arranged in a stack along the first direction X, which can reasonably utilize the space in the direction of gravity and improve the space utilization rate.

[0202] 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.

[0203] According to some embodiments of the present application, the embodiments of the present application also provide a power-consuming device comprising the battery 100 provided by any of the above embodiments.

[0204] The battery 100 is used to provide electric energy.

[0205] The power-consuming device can be a system or device using the battery 100 as described above.

[0206] According to some embodiments of the present application, referring to FIGS. 2-6, the embodiments of the present application provide a battery 100 comprising a box 10, a first layer of battery monomers 20, and a second layer of battery monomers 30.

[0207] The box body 10 comprises a box body 11, a first box cover 12 and a second box cover 13, the box body 11 has a first opening 11a and a second opening 11b at two ends along a first direction X respectively, the first box cover 12 covers the first opening 11a, and the second box cover 13 covers the second opening 11b. The box body 11 comprises a separation component 14, two first side walls 111 and two second side walls 112, the two first side walls 111 are arranged at intervals along a second direction Y, the separation component 14 is located between and connected to the two first side walls 111, and the two second side walls 112 are arranged at intervals along a third direction Z, and the separation component 14 is located between and connected to the two second side walls 112. Each first side wall 111 comprises a first wall part 111a and a second wall part 111b distributed along the first direction X. The first layer of battery monomers 20 and the second layer of battery monomers 30 are arranged in the box body 10, and the first layer of battery monomers 20 and the second layer of battery monomers 30 are arranged in layers along the first direction X. The first box cover 12, the separation component 14, the two first wall parts 111a and the two second side walls 112 form a space for accommodating the first layer of battery monomers 20, and the second box cover 13, the separation component 14, the two second wall parts 111b and the two second side walls 112 form a space for accommodating the second layer of battery monomers 30.

[0208] The first layer of battery monomers 20 is connected to and carried by the first box cover 12, and the second layer of battery monomers 30 is connected to and carried by the second box cover 13. The interior of the first box cover 12 is formed with a first flow channel 121 for accommodating a heat exchange medium, and the interior of the second box cover 13 is formed with a second flow channel 131 for accommodating a heat exchange medium.

[0209] According to the battery 100 of the embodiment of the application, the first layer of battery monomers 20 is connected to and carried by the first box cover 12, and the second layer of battery monomers 30 is connected to and carried by the second box cover 13, and during assembly of the battery 100, the assembly of the first layer of battery monomers 20 and the first box cover 12 and the assembly of the second layer of battery monomers 30 and the second box cover 13 can be performed synchronously, thereby saving assembly time and improving assembly efficiency. At the same time, the gravity of the first layer of battery monomers 20 is applied to the first box cover 12, the first box cover 12 provides an action force for the first layer of battery monomers 20 to overcome gravity, the gravity of the second layer of battery monomers 30 is applied to the second box cover 13, and the second box cover 13 provides an action force for the second layer of battery monomers 30 to overcome gravity, thereby improving assembly stability of the battery 100 and improving reliability of the battery 100. In addition, the first flow channel 121 and the second flow channel 131 can adjust the temperature of the first layer of battery monomers 20 and the second layer of battery monomers 30, thereby improving reliability of the battery 100.

[0210] 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, characterized by, The battery comprises: a box body, a first box cover and a second box cover, the box body has a first opening and a second opening at two ends along a first direction, the first box cover covers the first opening, and the second box cover covers the second opening; a first layer of battery monomers and a second layer of battery monomers arranged in the box body, the first layer of battery monomers and the second layer of battery monomers are arranged in layers along the first direction; wherein the first layer of battery monomers is connected to the first box cover and is carried by the first box cover, and the second layer of battery monomers is connected to the second box cover and is carried by the second box cover.

2. The battery of claim 1, wherein, The inside of the first box cover is formed with a first flow channel for accommodating a heat exchange medium, and the inside of the second box cover is formed with a second flow channel for accommodating a heat exchange medium.

3. The battery according to claim 1 or 2, characterized in that, The first layer of battery monomers comprises a first group of battery monomers and a second group of battery monomers arranged at intervals along a second direction, and the second direction is perpendicular to the first direction. The battery further comprises: a first partition connected to the first box cover and located between the first group of battery monomers and the second group of battery monomers.

4. The battery of claim 3, wherein, The first group of battery monomers and the second group of battery monomers are both connected to the first partition.

5. The battery according to claim 3 or 4, characterized in that, The first partition is integrally formed with or welded to the first box cover.

6. The battery of any one of claims 3-5, wherein, The inside of the first partition is formed with a third flow channel for accommodating a heat exchange medium.

7. The battery of any one of claims 1-6, wherein, The second layer of battery monomers comprises a third group of battery monomers and a fourth group of battery monomers arranged at intervals along a second direction, and the second direction is perpendicular to the first direction. The battery further comprises: a second partition connected to the second box cover and located between the third group of battery monomers and the fourth group of battery monomers.

8. The battery of claim 7, wherein, The third group of battery monomers and the fourth group of battery monomers are both connected to the second partition.

9. The battery according to claim 7 or 8, characterized in that, The second partition is integrally formed with or welded to the second box cover.

10. The battery of any one of claims 7-9, wherein, The inside of the second partition is formed with a fourth flow channel for accommodating a heat exchange medium.

11. The battery of any one of claims 1-10, wherein, The box body comprises: a separation component, which is located between the first layer of battery monomers and the second layer of battery monomers along the first direction.

12. The battery of claim 11, wherein, The first layer of battery monomers comprises a plurality of first battery monomers, and the side of the first battery monomers facing the separation component is provided with a first pressure relief mechanism, and the second layer of battery monomers comprises a plurality of second battery monomers, and the side of the second battery monomers facing the separation component is provided with a second pressure relief mechanism; the inside of the separation component has a first collection cavity for collecting the emissions of the first battery monomers when the first pressure relief mechanism is actuated and / or collecting the emissions of the second battery monomers when the second pressure relief mechanism is actuated.

13. The battery of claim 12, wherein, The separation 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 in communication with the first collection cavity, the first through hole is correspondingly arranged with the first pressure relief mechanism, and the second surface is provided with a second through hole in communication with the first collection cavity, the second through hole is correspondingly arranged with the second pressure relief mechanism.

14. The battery of claim 13, 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.

15. The battery of claim 14, wherein, The isolation component includes a barrier arranged in 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, and a projection of the barrier covers the first through hole and the second through hole.

16. The battery of claim 15, 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 along the first direction, a projection of the first flow guide covers the first through hole.

17. The battery of claim 16, wherein, From the first end to the second end, the distance between the first flow guide and the third surface gradually increases.

18. The battery of claim 16 or 17, 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 along the first direction, a projection of the second flow guide covers the second through hole.

19. The battery of claim 18, wherein, From the third end to the fourth end, the distance between the second flow guide and the fourth surface gradually increases.

20. The battery of any one of claims 12-19, wherein, The box body includes 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.

21. The battery of claim 20, wherein, The first side wall is internally formed with a second collection cavity, and the second collection cavity is in communication with the first collection cavity.

22. The battery of claim 21, wherein, The battery further includes a third pressure relief mechanism arranged in the first side wall, and the third pressure relief mechanism is used for discharging the discharge material in the second collection cavity.

23. The battery of any one of claims 1-22, wherein, The first direction is parallel to the direction of gravity.

24. An electrical device, comprising: The battery includes the battery as claimed in any one of claims 1-23. The battery includes the battery as claimed in any one of claims 1-23.

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