Battery and electric device

Abstract

The embodiments of the present application provide a battery and an electric device. The battery comprises a first layer of battery cells and a second layer of battery cells, wherein the first layer of battery cells and the second layer of battery cells are stacked in a first direction; the first layer of battery cells comprises a plurality of first battery cells; a first pressure relief mechanism is disposed at the end of each first battery cell in a second direction, with the first direction being perpendicular to the second direction; the second layer of battery cells comprises a plurality of second battery cells; and a second pressure relief mechanism is disposed at the end of each second battery cell in the second direction. On the basis of the technical solution provided in the present application, the reliability of the battery can be improved.

Description

Battery and electric device Cross-reference to related applications

[0001] This application claims priority to Chinese Patent Application CN202410635995.2, 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 reliability of the battery is a problem that cannot be ignored. Therefore, how to improve the reliability 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 reliability 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 and a second layer of battery monomers. The first layer of battery monomers and the second layer of battery monomers are arranged in a stack along a first direction; the first layer of battery monomers includes a plurality of first battery monomers, each first battery monomer being provided with a first pressure relief mechanism; the second layer of battery monomers includes a plurality of second battery monomers, each second battery monomer being provided with a second pressure relief mechanism. Wherein the orientation of the first pressure relief mechanism and the orientation of the second pressure relief mechanism are both arranged at an angle to the first direction.

[0008] According to the battery of the present application, the first layer of battery monomers and the second layer of battery monomers are arranged in a stack along the first direction, which can improve the space utilization of the battery in the first direction, so as to improve the energy density of the battery; the orientation of the first pressure relief mechanism and the orientation of the second pressure relief mechanism are both arranged at an angle to the first direction, so that when the first pressure relief mechanism is actuated or the second pressure relief mechanism is actuated, the discharge of the first pressure relief mechanism does not easily affect the second battery monomer, or the discharge of the second pressure relief mechanism does not easily affect the first battery monomer, which can reduce the risk of heat spread when the battery monomer is in thermal runaway, so that the battery has high reliability.

[0009] According to some embodiments of the present application, the first pressure relief mechanism is arranged at one end of the first battery cell in the second direction; and the second pressure relief mechanism is arranged at one end of the second battery cell in the second direction, the second direction being perpendicular to the first direction.

[0010] In the above scheme, the first pressure relief mechanism is arranged at one end of the first battery cell in the second direction, and the discharge of the first pressure relief mechanism is not easy to be directed towards the second battery cell when the first pressure relief mechanism is actuated, thereby reducing the influence of the discharge on the second battery cell and reducing the risk of heat spread when the battery cell is in thermal runaway. The second pressure relief mechanism is arranged at one end of the second battery cell in the second direction, and the discharge of the second pressure relief mechanism is not easy to be directed towards the first battery cell when the second pressure relief mechanism is actuated, thereby reducing the influence of the discharge on the first battery cell and reducing the risk of heat spread when the battery cell is in thermal runaway.

[0011] According to some embodiments of the present application, the direction of the first pressure relief mechanism and the direction of the second pressure relief mechanism are both parallel to the second direction.

[0012] In the above scheme, the direction of the first pressure relief mechanism is perpendicular to the first direction, and the discharge of the first pressure relief mechanism is not easy to affect the second battery cell when the first pressure relief mechanism is actuated, thereby reducing the influence of the discharge on the second battery cell and further reducing the risk of heat spread and improving the reliability of the battery. The direction of the second pressure relief mechanism is perpendicular to the first direction, and the discharge of the second pressure relief mechanism is not easy to affect the first battery cell when the second pressure relief mechanism is actuated, thereby reducing the influence of the discharge on the first battery cell and further reducing the risk of heat spread and improving the reliability of the battery.

[0013] According to some embodiments of the present application, the battery further comprises a box body, the first layer of battery cells and the second layer of battery cells are arranged in the box body; the box body comprises a first wall portion, the first wall portion is arranged opposite to the first pressure relief mechanism along the second direction, and a first collection cavity is formed in the interior of the first wall portion, the first collection cavity is used to collect the discharge of the first battery cell when the first pressure relief mechanism is actuated.

[0014] In the above scheme, the first wall portion is arranged opposite to the first pressure relief mechanism, and the discharge of the first pressure relief mechanism can be collected by the first collection cavity when the first pressure relief mechanism is actuated, thereby reducing the influence of the discharge on other battery cells.

[0015] According to some embodiments of the present application, the battery further comprises a third pressure relief mechanism, the third pressure relief mechanism is arranged at the first wall portion, and the third pressure relief mechanism is used to discharge the discharge in the first collection cavity.

[0016] In the above scheme, the arrangement of the third pressure relief mechanism can discharge the discharge in the first collection cavity, thereby reducing the internal pressure of the first collection cavity and improving the reliability of the battery.

[0017] According to some embodiments of the present application, the first wall portion has a first surface facing the first layer of battery cells, the first surface is provided with a first through hole, the first through hole is in communication with the first collection cavity, and the first through hole is correspondingly provided with the first pressure relief mechanism.

[0018] In the above scheme, the first through hole is provided, which can facilitate the discharge of the first pressure relief mechanism into the first collection cavity, and further reduce the influence of the discharge on other battery cells.

[0019] According to some embodiments of the present application, the box further includes a second wall portion, which is oppositely arranged with the second pressure relief mechanism along the second direction, and the interior of the second wall portion is formed with a second collection cavity for collecting the discharge of the second battery cell when the second pressure relief mechanism is actuated.

[0020] In the above scheme, the second wall portion is oppositely arranged with the second pressure relief mechanism, and the discharge of the second pressure relief mechanism can be collected by the second collection cavity when the second pressure relief mechanism is actuated, thereby reducing the influence of the discharge on other battery cells.

[0021] According to some embodiments of the present application, the second wall portion is integrally formed with the first wall portion.

[0022] In the above scheme, the second wall portion is integrally formed with the first wall portion, which is convenient for processing and manufacturing.

[0023] According to some embodiments of the present application, the battery further includes a fourth pressure relief mechanism, which is arranged on the second wall portion, and the fourth pressure relief mechanism is used for discharging the discharge in the second collection cavity.

[0024] In the above scheme, the fourth pressure relief mechanism is arranged to discharge the discharge in the second collection cavity, thereby reducing the internal pressure of the second collection cavity and improving the reliability of the battery.

[0025] According to some embodiments of the present application, the second wall portion has a second surface facing the second layer of battery cells, the second surface is provided with a second through hole, the second through hole is in communication with the second collection cavity, and the second through hole is correspondingly provided with the second pressure relief mechanism.

[0026] In the above scheme, the second through hole is provided, which can facilitate the discharge of the second pressure relief mechanism into the second collection cavity, and further reduce the influence of the discharge on other battery cells.

[0027] According to some embodiments of the present application, the battery further includes a box, the first layer of battery cells and the second layer of battery cells are arranged in the box; the box includes a separation component, which is located between the first layer of battery cells and the second layer of battery cells along the first direction, the first layer of battery cells is connected with the separation component, the second layer of battery cells is connected with the separation component, and the separation component bears the first layer of battery cells and the second layer of battery cells.

[0028] In the above scheme, the isolation component is arranged to separate the first layer of battery monomers and the second layer of battery monomers; the isolation component bears the first layer of battery monomers and the second layer of battery monomers, and the gravity of the first layer of battery monomers and the second layer of battery monomers is applied to the isolation component, which provides an action force to overcome the gravity for both the first layer of battery monomers and the second layer of battery monomers.

[0029] According to some embodiments of the present application, the inside of the isolation component is formed with a first flow channel for accommodating a heat exchange medium.

[0030] In the above scheme, the first flow channel is arranged to share the heat management component by the first layer of battery monomers and the second layer of battery monomers, which can adjust the temperature of the first layer of battery monomers and the second layer of battery monomers, and facilitate to improve the reliability of the battery.

[0031] According to some embodiments of the present application, the first layer of battery monomers includes a first battery monomer group and a second battery monomer group arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; the box body further includes a first partition, which is arranged in the isolation component and between the first battery monomer group and the second battery monomer group along the second direction.

[0032] In the above scheme, the first partition is arranged to improve the installation stability of the first battery monomer group and the second battery monomer group.

[0033] According to some embodiments of the present application, along the second direction, the first pressure relief mechanism of the first battery monomer group is arranged on the side of the first battery monomer group away from the second battery monomer group, and the first pressure relief mechanism of the second battery monomer group is arranged on the side of the second battery monomer group away from the first battery monomer group.

[0034] In the above scheme, the first pressure relief mechanism of the first battery monomer group and the first pressure relief mechanism of the second battery monomer group are arranged opposite to each other in the second direction, which can reduce the influence of the first pressure relief mechanism of the first battery monomer group on the second battery monomer group, and reduce the influence of the first pressure relief mechanism of the second battery monomer group on the first battery monomer group.

[0035] According to some embodiments of the present application, the first battery monomer group and the second battery monomer group are both connected to the first partition.

[0036] In the above scheme, the gravity of the first battery monomer group and the second battery monomer group is applied to the first partition, and the first partition provides an action force to overcome the gravity for both the first battery monomer group and the second battery monomer group.

[0037] According to some embodiments of the present application, the inside of the first partition is formed with a second flow channel for accommodating a heat exchange medium.

[0038] In the above scheme, the second flow channel is arranged, the first battery monomer group and the second battery monomer group share the heat management component, the temperature of the first battery monomer group and the second battery monomer group can be adjusted, and the reliability of the battery can be improved.

[0039] According to some embodiments of the application, the first partition is integrally formed or welded with the isolation component.

[0040] In the above scheme, the first partition is integrally formed with the isolation component, which can improve the structural strength. The first partition is welded with the isolation component, which has low manufacturing difficulty.

[0041] According to some embodiments of the application, the box further comprises two first wall parts arranged opposite in the second direction, the second direction being perpendicular to the first direction, the first layer of battery monomers being arranged between the two first wall parts, and the isolation component connecting the two first wall parts.

[0042] In the above scheme, the first layer of battery monomers is arranged between the two first wall parts, and the two first wall parts can protect the first layer of battery monomers; the isolation component connects the two first wall parts, which can improve the assembly strength.

[0043] According to some embodiments of the application, the isolation component is integrally formed or welded with the two first wall parts.

[0044] In the above scheme, the isolation component is integrally formed with the two first wall parts, and the isolation component has high connection strength with the two first wall parts, which is beneficial to improve the structural stability of the battery. The isolation component is welded with the two first wall parts, which has low manufacturing difficulty.

[0045] According to some embodiments of the application, the battery further comprises a first cover body connected with the two first wall parts, and the first layer of battery monomers is located between the first cover body and the isolation component in the first direction.

[0046] In the above scheme, the first cover body is connected with the two first wall parts to form a containing space containing the first layer of battery monomers; at the same time, the first layer of battery monomers can be assembled and maintained by disassembling the first cover body, which is beneficial to improve the assembly efficiency and reduce the maintenance cost.

[0047] According to some embodiments of the application, the second layer of battery monomers comprises a third battery monomer group and a fourth battery monomer group arranged at intervals in the second direction, the second direction being perpendicular to the first direction; the battery further comprises a second partition arranged on the isolation component, the second partition being arranged between the third battery monomer group and the fourth battery monomer group in the second direction.

[0048] In the above scheme, the arrangement of the second partition can improve the installation stability of the third battery monomer group and the fourth battery monomer group.

[0049] According to some embodiments of the present application, along the second direction, the second pressure relief mechanism of the third battery monomer group is arranged on the side of the third battery monomer group facing away from the fourth battery monomer group, and the second pressure relief mechanism of the fourth battery monomer group is arranged on the side of the fourth battery monomer group facing away from the third battery monomer group.

[0050] In the above scheme, the second pressure relief mechanism of the third battery monomer group and the second pressure relief mechanism of the fourth battery monomer group are arranged opposite to each other in the second direction, which can reduce the influence of the second pressure relief mechanism of the third battery monomer group on the fourth battery monomer group and the influence of the second pressure relief mechanism of the fourth battery monomer group on the third battery monomer group.

[0051] 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.

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

[0053] According to some embodiments of the present application, the second partition has a third flow channel formed therein to accommodate a heat exchange medium.

[0054] In the above scheme, the third flow channel is arranged, and the third battery monomer group and the fourth battery monomer group share the heat management component, which can adjust the temperature of the third battery monomer group and the fourth battery monomer group, and facilitate to improve the reliability of the battery.

[0055] According to some embodiments of the present application, the second partition is integrally formed or welded with the isolation component.

[0056] In the above scheme, the second partition is integrally formed with the isolation component, which can improve the structural strength. The second partition is welded with the isolation component, which has a lower manufacturing difficulty.

[0057] According to some embodiments of the present application, the box further comprises two second wall portions arranged opposite to each other along 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.

[0058] In the above scheme, the second layer of battery monomers is arranged between the two second wall portions, and the two second wall portions can protect the second layer of battery monomers; the isolation component connects the two second wall portions, which can improve the assembly strength.

[0059] According to some embodiments of the present application, the isolation component is integrally formed or welded with the two second wall portions.

[0060] In the above scheme, the isolation component is integrally formed with the two second wall portions, and the isolation component and the two second wall portions have high connection strength, which is beneficial to improve the structural stability of the battery. The isolation component and the two second wall portions are welded, and the manufacturing difficulty is low.

[0061] According to some embodiments of the present application, the battery further comprises a second cover body connected with the two second wall portions, and the second layer of battery monomers is located between the second cover body and the isolation component along the first direction.

[0062] In the above scheme, the second cover body is connected with the two second wall portions to form a containing space containing the second layer of battery monomers; meanwhile, the second layer of battery monomers can be assembled and maintained by disassembling the second cover body, which is beneficial to improve the assembly efficiency and reduce the maintenance cost.

[0063] According to some embodiments of the present application, the first direction is parallel to the direction of gravity.

[0064] 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, which can reasonably utilize the space in the direction of gravity and improve the space utilization.

[0065] Secondly, the embodiments of the present application also provide a battery.

[0066] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0067] 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 regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0068] Fig. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application;

[0069] Fig. 2 is a sectional view of a battery according to some embodiments of the present application;

[0070] Fig. 3 is an exploded schematic diagram of a partial structure according to some embodiments of the present application;

[0071] Fig. 4 is a structural schematic diagram of a box according to some embodiments of the present application;

[0072] Fig. 5 is an assembly schematic diagram of a first layer of battery monomers, a second layer of battery monomers and an isolation component according to some embodiments of the present application;

[0073] FIG. 6 is a structural exploded view of a battery according to some embodiments of the present application.

[0074] In the drawings, the figures are not necessarily drawn to scale.

[0075] Legend: 100 - battery; 10 - first layer of battery cells; 10a - first battery cell group; 10b - second battery cell group; 11 - first battery cell; 111 - first pressure relief mechanism; 112 - first electrode terminal; 20 - second layer of battery cells; 20a - third battery cell group; 20b - fourth battery cell group; 21 - second battery cell; 211 - second pressure relief mechanism; 30 - case; 30a - first side wall; 30b - second side wall; 31 - first wall portion; 311 - first collection cavity; 312 - first surface; 313 - first through hole; 314 - first protrusion; 32 - second wall portion; 321 - second collection cavity; 322 - second surface; 323 - second through hole; 324 - second protrusion; 33 - separation component; 331 - first flow channel; 34 - first partition; 341 - second flow channel; 35 - second partition; 351 - third flow channel; 41 - third pressure relief mechanism; 42 - fourth pressure relief mechanism; 51 - first cover; 52 - second cover; 200 - controller; 300 - motor; 1000 - vehicle; X - first direction; Y - second direction; Z - third direction. DETAILED DESCRIPTION

[0076] 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 protection of the present application.

[0077] 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 herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that the terms "comprises" and "comprising", when used in this specification, specify the presence of stated features, integers, steps, or components but do not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof.

[0078] 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 one of ordinary skill in the art, embodiments described in this application can be combined with one another.

[0079] 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 intermediate medium, it can be 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.

[0080] 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 kinds of 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.

[0081] "Multiple" appearing in this application means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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 battery cell, a blade battery cell, a multi-prismatic battery cell, such as a hexagonal battery cell, etc.

[0088] The battery cell includes a housing and a pressure relief mechanism disposed in the housing, the pressure relief mechanism being configured to actuate to release pressure and temperature inside the housing.

[0089] The pressure relief mechanism refers to an element or component that can actuate to release the 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.

[0090] As referred to in the present application, "actuation" refers to the pressure relief mechanism performing 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 performed by the pressure relief mechanism can include, but is not limited to, at least a portion of the pressure relief mechanism being 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 discharge material from the actuated part. In this way, the battery cell can be relieved of pressure and temperature in a controllable manner, thereby avoiding potential more serious accidents.

[0091] As referred to in the present application, the discharge material from the battery cell includes, but is not limited to, electrolyte, dissolved or split positive and negative electrode sheets, fragments of separator film, high-temperature and high-pressure gas generated by reaction, flame, etc.

[0092] The development of battery technology needs to consider various design factors, such as performance parameters such as energy density, discharge capacity, and charge-discharge rate, in addition to the reliability of the battery.

[0093] In some embodiments, in order to improve the energy density of the battery, the battery is usually provided with more battery cells, for example, multiple layers of battery cells are arranged in the battery box. When the multiple layers of battery cells are arranged in a stacked manner, the pressure relief mechanism of the battery cell is usually arranged at one end of the battery cell in the stacking direction, the pressure relief mechanism faces the battery cell of the adjacent layer, the direction of the pressure relief mechanism is parallel to the stacking direction, and the discharge material released by the actuation of the pressure relief mechanism is sprayed towards the battery cell of the adjacent layer. In this arrangement, when the battery cell undergoes thermal runaway, the discharge material released by the pressure relief mechanism of the battery cell is sprayed towards the battery cell of the adjacent layer, which can easily affect the battery cell of the adjacent layer, thereby causing thermal spread and resulting in low reliability of the battery.

[0094] In order to reduce the risk of heat spread of adjacent two layers of battery cells caused by the discharge of the pressure relief mechanism, the application provides a battery, which comprises 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 are arranged in a first direction, the first layer of battery cells comprises a plurality of first battery cells, each first battery cell is provided with a first pressure relief mechanism, the second layer of battery cells comprises a plurality of second battery cells, each second battery cell is provided with a second pressure relief mechanism. The orientation of the first pressure relief mechanism and the orientation of the second pressure relief mechanism are arranged at an angle with the first direction, which can improve the reliability of the battery.

[0095] In such a battery, since the orientation of the first pressure relief mechanism is arranged at an angle with the first direction, when the first pressure relief mechanism is actuated, the discharge of the first pressure relief mechanism is not easy to affect the second battery cell, and for the same reason, since the orientation of the second pressure relief mechanism is arranged at an angle with the first direction, when the second pressure relief mechanism is actuated, the discharge of the second pressure relief mechanism is not easy to affect the first battery cell, which can reduce the risk of heat spread when the battery cell is in thermal runaway, thereby making the battery have high reliability.

[0096] The battery disclosed in the embodiments of the 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 application.

[0097] The embodiments of the 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.

[0098] The following embodiments are described by taking a vehicle as an example for convenience of description.

[0099] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle provided by some embodiments of the application. The vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile 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 circuit system of the vehicle 1000, such as the power demand for starting, navigation and operation of the vehicle 1000.

[0100] The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for power requirements of the vehicle 1000 during start-up, navigation, and travel.

[0101] In some embodiments of the present application, the battery 100 can not only serve as a power source for the operation of the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0102] Please refer to FIG. 2, which is a cross-sectional view of a battery according to some embodiments of the present application, FIG. 3 is an exploded view of a partial structure according to some embodiments of the present application, and FIG. 4 is a structural schematic diagram of a box according to some embodiments of the present application. The embodiments of the present application provide a battery 100, which includes a first layer of battery monomers 10 and a second layer of battery monomers 20. 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 first layer of battery monomers 10 includes a plurality of first battery monomers 11, and each first battery monomer 11 is provided with a first pressure relief mechanism 111; the second layer of battery monomers 20 includes a plurality of second battery monomers 21, and each second battery monomer 21 is provided with a second pressure relief mechanism 211. The orientation of the first pressure relief mechanism 111 and the orientation of the second pressure relief mechanism 211 are both arranged at an angle with the first direction X.

[0103] The first layer of battery monomers 10 and the second layer of battery monomers 20 are arranged in a stack along the first direction X, which can be arranged in a stack along the direction of gravity. The first direction X can be parallel to the direction of gravity, or the first direction X can form an 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 arranged in a stack along the direction of gravity, the space inside the battery 100 in the direction of gravity can be reasonably utilized.

[0104] The first direction X is bidirectional. Taking the case where the first direction X is parallel to the direction of gravity as an example, the first layer of battery monomers 10 and the second layer of battery monomers 20 arranged in a stack along the first direction X can be arranged with the first layer of battery monomers 10 above the second layer of battery monomers 20, or the second layer of battery monomers 20 above the first layer of battery monomers 10.

[0105] The orientation of the first pressure relief mechanism 111 is unidirectional, which can be understood as the direction perpendicular to the plane where the first pressure relief mechanism 111 is located. The orientation of the second pressure relief mechanism 211 is unidirectional, which can be understood as the direction perpendicular to the plane where the second pressure relief mechanism 211 is located.

[0106] The orientation of the first pressure relief mechanism 111 is arranged at an angle to the first direction X, the orientation of the first pressure relief mechanism 111 is not parallel to the first direction X, and the orientation of the first pressure relief mechanism 111 is arranged at an angle to the first direction X. When the first pressure relief mechanism 111 discharges the discharge, the discharge is not easy to affect the second battery monomer 21. The orientation of the second pressure relief mechanism 211 is arranged at an angle to the first direction X, the orientation of the second pressure relief mechanism 211 is not parallel to the first direction X, and the orientation of the second pressure relief mechanism 211 is arranged at an angle to the first direction X. When the second pressure relief mechanism 211 discharges the discharge, the discharge is not easy to affect the first battery monomer 11.

[0107] The plurality of first battery monomers 11 can be connected in series, parallel or mixed. Mixed connection means that there are series and parallel connections in the plurality of first battery monomers 11.

[0108] The plurality of second battery monomers 21 can be connected in series, parallel or mixed. Mixed connection means that there are series and parallel connections in the plurality of second battery monomers 21.

[0109] The first battery monomer 11 and the second battery monomer 21 can be a secondary battery 100 or a primary battery 100; The first battery monomer 11 and the second battery monomer 21 can also be a lithium-sulfur battery 100, a sodium-ion battery 100 or a magnesium-ion battery 100, but not limited to this.

[0110] In some embodiments, the first battery monomer 11 includes a first electrode terminal, which can be arranged at the same end of the first battery monomer 11 as the first pressure relief mechanism 111, or arranged at different two ends of the first battery monomer 11 as the first pressure relief mechanism 111, such as adjacent two ends or opposite two ends.

[0111] In some embodiments, the second battery monomer 21 includes a second electrode terminal, which can be arranged at the same end of the second battery monomer 21 as the second pressure relief mechanism 211, or arranged at different two ends of the second battery monomer 21 as the second pressure relief mechanism 211, such as adjacent two ends or opposite two ends.

[0112] The structure of the first battery monomer 11 can be the same as or different from the structure of the second battery monomer 21.

[0113] The battery 100 further includes a first busbar and a second busbar, the first busbar being used to realize the electrical connection of two first battery monomers 11, and the second busbar being used to realize the electrical connection of two second battery monomers 21.

[0114] In some embodiments, the battery 100 further comprises a box, the first layer of battery monomers 10 and the second layer of battery monomers 20 are arranged in the box, the first pressure relief mechanism 111 and the second pressure relief mechanism 211 can be directed to the wall part of the same end of the box in the second direction Y, for example, the direction of the first pressure relief mechanism 111 can be the same as the direction of the second pressure relief mechanism 211; the first pressure relief mechanism 111 and the second pressure relief mechanism 211 can be directed to the wall part of the opposite two ends of the box in the second direction Y, for example, the direction of the first pressure relief mechanism 111 can be opposite to the direction of the second pressure relief mechanism 211.

[0115] According to the battery 100 of the embodiments of the present application, 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 improve the space utilization rate of the battery 100 in the first direction X, so as to improve the energy density of the battery 100; the direction of the first pressure relief mechanism 111 and the direction of the second pressure relief mechanism 211 are both arranged at an angle with the first direction, so that when the first pressure relief mechanism 111 is actuated or the second pressure relief mechanism 211 is actuated, the discharge of the first pressure relief mechanism 111 is not easy to affect the second battery monomer 21, or the discharge of the second pressure relief mechanism 211 is not easy to affect the first battery monomer 11, which can reduce the risk of heat spread when the battery 100 monomer is out of control, so that the battery 100 has higher reliability.

[0116] According to some embodiments of the present application, the first pressure relief mechanism 111 is arranged at one end of the first battery monomer 11 in the second direction Y; the second pressure relief mechanism 211 is arranged at one end of the second battery monomer 21 in the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0117] The second direction Y is bidirectional, and "the first pressure relief mechanism 111 is arranged at one end of the first battery monomer 11 in the second direction Y" means that the first pressure relief mechanism 111 is arranged at one end of the first battery monomer 11 in the second direction Y, for example, taking the second direction Y as the left-right horizontal direction as an example, the first pressure relief mechanism 111 can be arranged at the left end of the first battery monomer 11 in the second direction Y, or the first pressure relief mechanism 111 can be arranged at the right end of the first battery monomer 11 in the second direction Y. Similarly, the second pressure relief mechanism 211 is arranged at one end of the second battery monomer 21 in the second direction Y.

[0118] The second direction Y is perpendicular to the first direction X, the first pressure relief mechanism 111 is not arranged towards the second battery monomer 21, and the second pressure relief mechanism 211 is not arranged towards the first battery monomer 11, when the first pressure relief mechanism 111 is actuated to discharge the discharge, the discharge is not easy to spray to the second battery monomer 21; at the same time, when the second pressure relief mechanism 211 is actuated to discharge the discharge, the discharge is not easy to spray to the first battery monomer 11.

[0119] In the above scheme, the first pressure relief mechanism 111 is arranged at one end of the first battery cell 11 in the second direction Y, and the discharge of the first pressure relief mechanism 111 is not easy to be directed to the second battery cell 21 when the first pressure relief mechanism 111 is actuated, thereby reducing the influence of the discharge on the second battery cell 21 and reducing the risk of heat spread when the battery cell is in thermal runaway. The second pressure relief mechanism 211 is arranged at one end of the second battery cell 21 in the second direction Y, and the discharge of the second pressure relief mechanism 211 is not easy to be directed to the first battery cell 11 when the second pressure relief mechanism 211 is actuated, thereby reducing the influence of the discharge on the first battery cell 11 and reducing the risk of heat spread when the battery cell is in thermal runaway.

[0120] According to some embodiments of the present application, the direction of the first pressure relief mechanism 111 and the direction of the second pressure relief mechanism 211 are both parallel to the second direction Y.

[0121] The direction of the first pressure relief mechanism 111 is parallel to the second direction Y, that is, the direction of the first pressure relief mechanism 111 is perpendicular to the first direction X, and the discharge of the first pressure relief mechanism 111 can be ejected along the second direction Y when the first pressure relief mechanism 111 is actuated, and the discharge is not easy to be ejected to the second battery cell 21.

[0122] The direction of the second pressure relief mechanism 211 is parallel to the second direction Y, that is, the direction of the second pressure relief mechanism 211 is perpendicular to the first direction X, and the discharge of the second pressure relief mechanism 211 can be ejected along the second direction Y when the second pressure relief mechanism 211 is actuated, and the discharge is not easy to be ejected to the first battery cell 11.

[0123] In the above scheme, the direction of the first pressure relief mechanism 111 is perpendicular to the first direction X, and the discharge of the first pressure relief mechanism 111 is not easy to affect the second battery cell 21 when the first pressure relief mechanism 111 is actuated, thereby reducing the influence of the discharge on the second battery cell 21 and further reducing the risk of heat spread, thereby improving the reliability of the battery 100. The direction of the second pressure relief mechanism 211 is perpendicular to the first direction X, and the discharge of the second pressure relief mechanism 211 is not easy to affect the first battery cell 11 when the second pressure relief mechanism 211 is actuated, thereby reducing the influence of the discharge on the first battery cell 11 and further reducing the risk of heat spread, thereby improving the reliability of the battery 100.

[0124] Please refer to FIGS. 2 to 4, according to some embodiments of the present application, the battery 100 further comprises a box 30, and the first layer of battery cells 10 and the second layer of battery cells 20 are arranged in the box 30. The box 30 comprises a first wall portion 31, which is arranged opposite to the first pressure relief mechanism 111 along the second direction Y, and the inside of the first wall portion 31 is formed with a first collection cavity 311 for collecting the discharge of the first battery cell 11 when the first pressure relief mechanism 111 is actuated.

[0125] The first wall portion 31 is a hollow structure, so that an inner portion of the first wall portion 31 forms a first collection cavity 311. On one hand, the first collection cavity 311 can collect the discharge of the first pressure relief mechanism 111 when the first pressure relief mechanism 111 is actuated. On the other hand, the first collection cavity 311 can reduce the weight of the battery box 30.

[0126] In the second direction Y, the first wall portion 31 is opposite to the first pressure relief mechanism 111. When the first pressure relief mechanism 111 is actuated, the discharge of the first pressure relief mechanism 111 is sprayed towards the first wall portion 31. The first wall portion 31 can be provided with a weak portion (such as a notch, a thinned area, etc.). When the first pressure relief mechanism 111 is actuated, the discharge of the first pressure relief mechanism 111 can break the weak portion and enter the first collection cavity 311.

[0127] In the above scheme, the first wall portion 31 is opposite to the first pressure relief mechanism 111. When the first pressure relief mechanism 111 is actuated, the discharge of the first pressure relief mechanism 111 can be collected by the first collection cavity 311, so as to reduce the influence of the discharge on other battery monomers 100.

[0128] 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 41. The third pressure relief mechanism 41 is arranged on the first wall portion 31. The third pressure relief mechanism 41 is used to release the discharge in the first collection cavity 311.

[0129] In some embodiments, the third pressure relief mechanism 41 is arranged on the outer side of the first wall portion 31. The outer side of the first wall portion 31 is the side of the first wall portion 31 facing away from the first layer of battery monomers 10, so as to facilitate the third pressure relief mechanism 41 to release the discharge when the third pressure relief mechanism 41 is actuated.

[0130] In the above scheme, the arrangement of the third pressure relief mechanism 41 can release the discharge in the first collection cavity 311, so as to reduce the internal pressure of the first collection cavity 311 and improve the reliability of the battery 100.

[0131] Please refer to FIG. 3 and FIG. 4. According to some embodiments of the present application, the first wall portion 31 has a first surface 312 facing the first layer of battery monomers 10. The first surface 312 is provided with a first through hole 313. The first through hole 313 is in communication with the first collection cavity 311. The first through hole 313 is arranged corresponding to the first pressure relief mechanism 111.

[0132] The first wall portion 31 and other wall portions enclose a space for accommodating the first layer of battery monomers 10. The first through hole 313 is in communication with the first collection cavity 311 and the space. When the first pressure relief mechanism 111 releases the discharge, the discharge can enter the first collection cavity 311 through the first through hole 313, so as to be received by the first collection cavity 311.

[0133] The first through hole 313 can be arranged corresponding to one first pressure relief mechanism 111, or can be arranged corresponding to multiple first pressure relief mechanisms 111. For example, the number of first through holes 313 can be multiple, and each first through hole 313 is arranged corresponding to one first pressure relief mechanism 111; or the number of first through holes 313 is one, and one first through hole 313 corresponds to multiple first pressure relief mechanisms 111.

[0134] In some embodiments, one first pressure relief mechanism 111 corresponds to one first through hole 313, so as to reduce the risk of thermal runaway diffusion, and make the battery 100 have higher reliability.

[0135] In some embodiments, when the first electrode terminal 112 of the first battery monomer 11 is arranged towards the first surface 312, the first protruding part 314 can be formed on the first surface 312, and the first through hole 313 is arranged in the first protruding part 314, so as to reasonably utilize the space in the second direction Y.

[0136] In the above scheme, the arrangement of the first through hole 313 can facilitate the exhaust emitted by the first pressure relief mechanism 111 to enter the first collection cavity 311, and further reduce the influence of the exhaust on other battery monomers 100.

[0137] Please refer to FIG. 3 and FIG. 4, according to some embodiments of the present application, the box body 30 further comprises a second wall part 32, which is arranged opposite to the second pressure relief mechanism 211 along the second direction Y, and the inside of the second wall part 32 forms a second collection cavity 321, which is used to collect the exhaust of the second battery monomer 21 when the second pressure relief mechanism 211 is actuated.

[0138] In some embodiments, the second wall part 32 and the first wall part 31 can be located at both ends of the box body 30 in the second direction Y.

[0139] The second wall part 32 is a hollow structure, so that the inside of the second wall part 32 forms the second collection cavity 321, which can collect the exhaust emitted by the second pressure relief mechanism 211 when the second pressure relief mechanism 211 is actuated, and on the other hand, can reduce the weight of the box body 30.

[0140] Along the second direction Y, the second wall part 32 is arranged opposite to the second pressure relief mechanism 211, and when the second pressure relief mechanism 211 is actuated, the exhaust emitted by the second pressure relief mechanism 211 is sprayed towards the second wall part 32. The second wall part 32 can be provided with a weak part (such as a notch, a thinned area, etc.), and when the second pressure relief mechanism 211 is actuated, the exhaust emitted by the second pressure relief mechanism 211 can damage the weak part and enter the second collection cavity 321.

[0141] In the above scheme, the second wall portion 32 is arranged opposite to the second pressure relief mechanism 211, and when the second pressure relief mechanism 211 is actuated, the discharge of the second pressure relief mechanism 211 can be collected by the second collection cavity 321, reducing the influence of the discharge on other battery 100 monomers.

[0142] In some embodiments, the second wall portion 32 and the first wall portion 31 are located at the same end of the box 30 in the second direction Y, and the second wall portion 32 is connected with the first wall.

[0143] According to some embodiments of the present application, the second wall portion 32 is integrally formed with the first wall portion 31.

[0144] The second wall portion 32 and the first wall portion 31 can be integrally extruded or injection molded.

[0145] In the above scheme, the second wall portion 32 is integrally formed with the first wall portion 31, which is convenient for processing and manufacturing.

[0146] 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 42, the fourth pressure relief mechanism 42 is arranged on the second wall portion 32, and the fourth pressure relief mechanism 42 is used for discharging the discharge in the second collection cavity 321.

[0147] In some embodiments, the fourth pressure relief mechanism 42 is arranged on the outer side of the second wall portion 32, and the outer side of the second wall portion 32 is the side of the second wall portion 32 away from the second layer of battery monomers 20, so as to facilitate the fourth pressure relief mechanism 42 to discharge the discharge when actuated.

[0148] In the above scheme, the arrangement of the fourth pressure relief mechanism 42 can discharge the discharge in the second collection cavity 321, reduce the internal pressure of the second collection cavity 321, and improve the reliability of the battery 100.

[0149] Please refer to FIG. 3 and FIG. 4, according to some embodiments of the present application, the second wall portion 32 has a second surface 322 facing the second layer of battery monomers 20, the second surface 322 is provided with a second through hole 323, the second through hole 323 is in communication with the second collection cavity 321, and the second through hole 323 is arranged corresponding to the second pressure relief mechanism 211.

[0150] The second wall portion 32 and the other wall portions enclose a space for accommodating the second layer of battery monomers 20, the second through hole 323 communicates the second collection cavity 321 and the space, and when the second pressure relief mechanism 211 discharges the discharge, the discharge can enter the second collection cavity 321 through the second through hole 323 to be received by the second collection cavity 321.

[0151] The second through hole 323 can correspond to one second pressure relief mechanism 211, or can correspond to multiple second pressure relief mechanisms 211. For example, there can be multiple second through holes 323, each corresponding to one second pressure relief mechanism 211; or there can be one second through hole 323, corresponding to multiple second pressure relief mechanisms 211.

[0152] In some embodiments, one second pressure relief mechanism 211 corresponds to one second through hole 323, to reduce the risk of thermal runaway spreading, so that the battery 100 has higher reliability.

[0153] In some embodiments, when the second electrode terminal of the second battery monomer 21 is arranged towards the second surface 322, a second protruding part 324 can be formed on the second surface 322, and the second through hole 323 is arranged in the second protruding part 324, so as to reasonably utilize the space in the second direction.

[0154] In the above scheme, the arrangement of the second through hole 323 can facilitate the discharge of the second pressure relief mechanism 211 to enter the second collection cavity 321, further reducing the impact of the discharge on other battery 100 monomers.

[0155] Please refer to FIG. 3 and FIG. 4, and further refer to FIG. 5, which is an assembly schematic diagram of the first layer battery monomer and the second layer battery monomer and the isolation component provided by some embodiments of the present application. According to some embodiments of the present application, the battery 100 further comprises a box 30, and the first layer battery monomer 10 and the second layer battery monomer 20 are arranged in the box 30. The box 30 comprises an isolation component 33, which is located between the first layer battery monomer 10 and the second layer battery monomer 20 along the first direction X, and the first layer battery monomer 10 and the second layer battery monomer 20 are connected with the isolation component 33, and the isolation component 33 bears the first layer battery monomer 10 and the second layer battery monomer 20.

[0156] The box 30 has a containing space, and the first layer battery monomer 10 and the second layer battery monomer 20 are both contained in the containing space.

[0157] The isolation component 33 is a component for isolating the first layer battery monomer 10 and the second layer battery monomer 20 in the first direction X. The isolation component 33 can divide the containing space inside the box 30 into two chambers, and the first layer battery monomer 10 and the second layer battery monomer 20 are respectively located in the two chambers.

[0158] In some embodiments, the isolation component 33 can isolate the first layer of battery cells 10 and the second layer of battery cells 20 into two independent chambers, so as to reduce the influence of the exhaust of the first pressure relief mechanism 111 of the first layer of battery cells 10 on the second layer of battery cells 20, or reduce the influence of the exhaust of the second pressure relief mechanism 211 of the second layer of battery cells 20 on the first layer of battery cells 10.

[0159] The "isolation component 33 bears the first layer of battery cells 10 and the second layer of battery cells 20" means that the weight of the first layer of battery cells 10 and the second layer of battery cells 20 is applied to the isolation component 33.

[0160] The material of the isolation component 33 can be various, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0161] In the above scheme, the isolation component 33 can separate the first layer of battery cells 10 and the second layer of battery cells 20; the isolation component 33 bears the first layer of battery cells 10 and the second layer of battery cells 20, the gravity of the first layer of battery cells 10 and the second layer of battery cells 20 is applied to the isolation component 33, and the isolation component 33 provides an action force to overcome the gravity for the first layer of battery cells 10 and the second layer of battery cells 20.

[0162] Please refer to FIG. 5, according to some embodiments of the present application, the inside of the isolation component 33 is formed with a first flow channel 331 containing a heat exchange medium.

[0163] The heat exchange medium can be a cooling medium or a cooling fluid, and the heat exchange medium can be water, a mixture of water and ethylene glycol, or air, etc. The heat exchange medium can adjust the temperature, for example, can heat or cool the battery 100 cells.

[0164] In some embodiments, the heat exchange medium in the first flow channel 331 can circulate to achieve better temperature adjustment effect. For example, the first flow channel 331 can be provided with two openings, one opening is a heat exchange medium inlet, and the other opening is a heat exchange medium outlet, and the two openings are respectively connected with an external heat exchange medium circulation system, so as to realize the circulation of the heat exchange medium in the first flow channel 331.

[0165] The isolation component 33 can be a hollow structure, so as to form the first flow channel 331 in the inside of the isolation component 33.

[0166] In the above scheme, the first flow channel 331 is provided, and the first layer of battery cells 10 and the second layer of battery cells 20 share the thermal management component, which can adjust the temperature of the first layer of battery cells 10 and the second layer of battery cells 20, and facilitate to improve the reliability of the battery 100.

[0167] Please refer to FIG. 2, FIG. 3 and FIG. 5, according to some embodiments of the present application, the first layer of battery monomer 10 includes first battery monomer group 10a and second battery monomer group 10b arranged in the second direction Y, the second direction Y is perpendicular to the first direction X. The box 30 further includes a first partition 34, the first partition 34 is arranged in the isolation component 33, along the second direction Y, the first partition 34 is arranged between the first battery monomer group 10a and the second battery monomer group 10b.

[0168] The first battery monomer group 10a and the second battery monomer group 10b can include a plurality of first battery monomers 11 respectively. In the first battery monomer group 10a, a plurality of first battery monomers 11 can be arranged in the third direction, the third direction, the second direction Y and the first direction X are perpendicular to each other. In the second battery monomer group 10b, a plurality of second battery monomers 21 can be arranged in the third direction.

[0169] The first partition 34 is a component for separating the first battery monomer group 10a and the second battery monomer group 10b in the second direction Y.

[0170] The first partition 34 is connected to the isolation component 33, for example, the first partition 34 is bonded, welded, integrally formed with the isolation component 33 and the like.

[0171] In the above scheme, the arrangement of the first partition 34 can improve the installation stability of the first battery monomer group 10a and the second battery monomer group 10b.

[0172] Please refer to FIG. 5, according to some embodiments of the present application, along the second direction Y, the first pressure relief mechanism 111 of the first battery monomer group 10a is arranged on the side of the first battery monomer group 10a away from the second battery monomer group 10b, and the first pressure relief mechanism 111 of the second battery monomer group 10b is arranged on the side of the second battery monomer group 10b away from the first battery monomer group 10a.

[0173] The first pressure relief mechanism 111 of the first battery monomer group 10a is opposite to the first pressure relief mechanism 111 of the second battery monomer group 10b in the second direction Y.

[0174] In the above scheme, the first pressure relief mechanism 111 of the first battery monomer group 10a and the first pressure relief mechanism 111 of the second battery monomer group 10b are arranged opposite to each other in the second direction Y, which can reduce the influence of the first pressure relief mechanism 111 of the first battery monomer group 10a on the second battery monomer group 10b, and reduce the influence of the first pressure relief mechanism 111 of the second battery monomer group 10b on the first battery monomer group 10a.

[0175] According to some embodiments of the present application, the first battery monomer group 10a and the second battery monomer group 10b are connected to the first partition 34.

[0176] The first battery cell group 10a and the first separator 34 can be connected by adhesion, welding, or the like. The second battery cell group 10b and the first separator 34 can be connected by adhesion, welding, or the like.

[0177] In the above scheme, the gravity of the first battery cell group 10a and the second battery cell group 10b is applied to the first separator 34, and the first separator 34 provides an action force for overcoming the gravity for both the first battery cell group 10a and the second battery cell group 10b.

[0178] Please refer to FIG. 4 and FIG. 5, according to some embodiments of the present application, the first separator 34 is internally formed with a second flow channel 341 for accommodating a heat exchange medium.

[0179] The heat exchange medium in the second flow channel 341 can be the same as the heat exchange medium in the first flow channel 331.

[0180] The heat exchange medium in the second flow channel 341 can be circulated to achieve a better temperature regulation effect. For example, the second flow channel 341 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 to make the heat exchange medium circulate in the second flow channel 341.

[0181] In some embodiments, the second flow channel 341 can be in communication with the first flow channel 331.

[0182] In the above scheme, the second flow channel 341 is provided, the first battery cell group 10a and the second battery cell group 10b share the thermal management component, which can regulate the temperature of the first battery cell group 10a and the second battery cell group 10b, and facilitate to improve the reliability of the battery 100.

[0183] According to some embodiments of the present application, the first separator 34 is integrally formed with or welded to the isolation component 33.

[0184] The first separator 34 and the isolation component 33 can be integrally extruded or injection molded.

[0185] In the above scheme, the first separator 34 and the isolation component 33 are integrally formed to improve the structural strength. The first separator 34 and the isolation component 33 are welded to have a lower manufacturing difficulty.

[0186] Please refer to FIG. 4, according to some embodiments of the present application, the box body 30 further comprises two first wall portions 31 oppositely arranged along a second direction Y, the second direction Y is perpendicular to the first direction X, the first layer of battery cells 10 is arranged between the two first wall portions 31, and the isolation component 33 connects the two first wall portions 31.

[0187] The two first wall portions 31 are oppositely arranged in the second direction Y, and the two first wall portions 31 and the isolation component 33 enclose a space for accommodating the first layer of battery monomers 10. An end of the first wall portion 31 away from the isolation component 33 forms an opening in the first direction X, so as to facilitate the first layer of battery monomers 10 to enter the space.

[0188] In the above scheme, the first layer of battery monomers 10 is arranged between the two first wall portions 31, and the two first wall portions 31 can protect the first layer of battery monomers 10; the isolation component 33 connects the two first wall portions 31, which can improve the assembly strength.

[0189] According to some embodiments of the present application, the isolation component 33 is integrally formed or welded with the two first wall portions 31.

[0190] The isolation component 33 and the two first wall portions 31 can be integrally extruded or injection molded.

[0191] In the above scheme, the isolation component 33 is integrally formed with the two first wall portions 31, and the isolation component 33 and the two first wall portions 31 have high connection strength, which is beneficial to improve the structural stability of the battery 100. The isolation component 33 and the two first wall portions 31 are welded, which has low manufacturing difficulty.

[0192] Please refer to FIG. 2 and FIG. 3, according to some embodiments of the present application, the battery 100 further comprises a first cover 51, the first cover 51 is connected with the two first wall portions 31, and the first layer of battery monomers 10 is located between the first cover 51 and the isolation component 33 in the first direction X.

[0193] The first cover 51 can be configured as a single-sided open cover structure, or can be configured as a flat plate.

[0194] The first cover 51, the two first wall portions 31 and the isolation component 33 enclose a space for accommodating the first layer of battery monomers 10, and the first cover 51 can play a protective role for the first layer of battery monomers 10.

[0195] In the above scheme, the first cover 51 is connected with the two first wall portions 31 to form an accommodation space for accommodating the first layer of battery monomers 10; at the same time, by disassembling the first cover 51, the assembly and maintenance of the first layer of battery monomers 10 can be realized, which is beneficial to improve the assembly efficiency and reduce the maintenance cost.

[0196] Referring to FIG. 3 and FIG. 5, according to some embodiments of the present application, the second layer of battery cells 20 includes a third group of battery cells 20a and a fourth group of battery cells 20b arranged in a second direction Y perpendicular to the first direction X. The battery 100 further includes a second partition 35 disposed on the isolation member 33 between the third group of battery cells 20a and the fourth group of battery cells 20b in the second direction Y.

[0197] The third group of battery cells 20a and the fourth group of battery cells 20b can each include a plurality of second battery cells 21. In the third group of battery cells 20a, the plurality of second battery cells 21 can be arranged in a third direction. In the fourth group of battery cells 20b, the plurality of second battery cells 21 can be arranged in the third direction.

[0198] The second partition 35 is a member for partitioning the third group of battery cells 20a and the fourth group of battery cells 20b in the second direction Y.

[0199] The first partition 34 is connected to the isolation member 33, for example, by being bonded, welded, integrally formed, or the like, to the isolation member 33.

[0200] In the above scheme, the provision of the second partition 35 can improve the mounting stability of the third group of battery cells 20a and the fourth group of battery cells 20b.

[0201] Referring to FIG. 5, according to some embodiments of the present application, in the second direction Y, the second pressure relief mechanism 211 of the third group of battery cells 20a is disposed on a side of the third group of battery cells 20a facing away from the fourth group of battery cells 20b, and the second pressure relief mechanism 211 of the fourth group of battery cells 20b is disposed on a side of the fourth group of battery cells 20b facing away from the third group of battery cells 20a.

[0202] The discharge direction of the second pressure relief mechanism 211 of the third group of battery cells 20a is opposite to the discharge direction of the second pressure relief mechanism 211 of the fourth group of battery cells 20b.

[0203] In the above scheme, the second pressure relief mechanism 211 of the third group of battery cells 20a and the second pressure relief mechanism 211 of the fourth group of battery cells 20b are disposed opposite to each other in the second direction Y, which can reduce the influence of the second pressure relief mechanism 211 of the third group of battery cells 20a on the fourth group of battery cells 20b, and reduce the influence of the second pressure relief mechanism 211 of the fourth group of battery cells 20b on the third group of battery cells 20a.

[0204] According to some embodiments of the present application, the third group of battery cells 20a and the fourth group of battery cells 20b are each connected to the second partition 35.

[0205] The connection between the third battery cell group 20a and the second partition 35 can be by adhesion, welding, or the like. The connection between the fourth battery cell group 20b and the second partition 35 can be by adhesion, welding, or the like.

[0206] The second partition 35 can bear the third battery cell group 20a and the fourth battery cell group 20b.

[0207] In the above scheme, the gravity of the third battery cell group 20a and the fourth battery cell group 20b is applied to the second partition 35, and the second partition 35 provides an action force to overcome the gravity for both the third battery cell group 20a and the fourth battery cell group 20b.

[0208] Please refer to FIG. 4 and FIG. 5, according to some embodiments of the present application, the inside of the second partition 35 is formed with a third flow channel 351 containing heat exchange medium.

[0209] The heat exchange medium in the third flow channel 351 can be the same as the heat exchange medium in the first flow channel 331.

[0210] The heat exchange medium in the third flow channel 351 can be circulated to achieve better temperature regulation. For example, the third flow channel 351 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 third flow channel 351.

[0211] In some embodiments, the third flow channel 351 can be in communication with the first flow channel 331.

[0212] In the above scheme, the third flow channel 351 is provided, and the third battery cell group 20a and the fourth battery cell group 20b share the thermal management component, which can adjust the temperature of the third battery cell group 20a and the fourth battery cell group 20b, and facilitate to improve the reliability of the battery 100.

[0213] According to some embodiments of the present application, the second partition 35 is integrally formed or welded with the isolation component 33.

[0214] The second partition 35 and the isolation component 33 can be integrally extruded, or can be injection molded.

[0215] In the above scheme, the integrally formed second partition 35 and the isolation component 33 can improve the structural strength. The second partition 35 and the isolation component 33 are welded, which is relatively low in manufacturing difficulty.

[0216] Referring to FIG. 3 and FIG. 4, according to some embodiments of the present application, the box 30 further comprises two second wall portions 32 oppositely arranged along the second direction Y, the second layer of battery monomers 20 is arranged between the two second wall portions 32, and the isolation component 33 connects the two second wall portions 32.

[0217] The two second wall portions 32 are oppositely arranged along the second direction Y, and the two second wall portions 32 and the isolation component 33 enclose a space for accommodating the second layer of battery monomers 20. An end of the second wall portion 32 away from the isolation component 33 in the first direction X forms an opening, so as to facilitate the second layer of battery monomers 20 to enter the space.

[0218] In some embodiments, the isolation component 33 is located at an end of the first wall portion 31 close to the second wall portion 32, and at the same time, the isolation component 33 is located at an end of the second wall portion 32 close to the first wall portion 31, that is, the isolation component 33 connects the adjacent first wall portion 31 and second wall portion 32.

[0219] In the above scheme, the second layer of battery monomers 20 is arranged between the two second wall portions 32, and the two second wall portions 32 can protect the second layer of battery monomers 20; the isolation component 33 connects the two second wall portions 32, which can improve the assembly strength.

[0220] According to some embodiments of the present application, the isolation component 33 is integrally formed or welded with the two second wall portions 32.

[0221] The isolation component 33 and the two second wall portions 32 can be integrally extruded, or can be injection molded.

[0222] In the above scheme, the isolation component 33 is integrally formed with the two second wall portions 32, and the isolation component 33 and the two second wall portions 32 have high connection strength, which is beneficial to improve the structural stability of the battery 100. The isolation component 33 and the two second wall portions 32 are welded, which has low manufacturing difficulty.

[0223] Referring to FIG. 2 and FIG. 3, according to some embodiments of the present application, the battery 100 further comprises a second cover 52, the second cover 52 is connected with the two second wall portions 32, and along the first direction X, the second layer of battery monomers 20 is located between the second cover 52 and the isolation component 33.

[0224] The second cover 52 can be configured as a one-side open cover structure, or can be configured as a flat plate.

[0225] The second cover 52, the two second wall portions 32 and the isolation component 33 enclose a space for accommodating the second layer of battery monomers 20, and the second cover 52 can play a protective role for the second layer of battery monomers 20.

[0226] In the above scheme, the second cover 52 is connected with the two second wall portions 32 to form a containing space containing the second layer of battery monomers 20; meanwhile, the second cover 52 can be disassembled, so that the assembly and maintenance of the second layer of battery monomers 20 can be realized, which is beneficial to improve the assembly efficiency and reduce the maintenance cost.

[0227] Please refer to FIG. 6, which is a structural exploded view of a battery provided by some embodiments of the present application. According to some embodiments of the present application, the box 30 includes two first side walls 30a and two second side walls 30b, the two first side walls 30a are oppositely arranged along the second direction Y, and the two second side walls 30b are oppositely arranged along the third direction Z. The two ends of the first side wall 30a in the third direction Z are respectively connected with the two second side walls 30b. The two first side walls 30a and the two second side walls 30b define a containing space for containing the first layer of battery monomers 10 and the second layer of battery monomers 20. Each first side wall 30a includes a first wall portion 31 and a second wall portion 32, and the first wall portion 31 and the second wall portion 32 are distributed along the first direction. The first wall portion 31 is arranged corresponding to the first layer of battery monomers 10, and the second wall portion 32 is arranged corresponding to the second layer of battery monomers 20. The isolation component 33 connects the two first side walls 30a and the two second side walls 30b. The first cover 51 connects the two first wall portions 31 and the two second side walls 30b. The isolation component 33, the first cover 51, the two first wall portions 31 and the two second side walls 30b define a space containing the first layer of battery monomers 10. The second cover 52 connects the two second wall portions 32 and the two second side walls 30b. The isolation component 33, the second cover 52, the two second wall portions 32 and the two second side walls 30b define a space containing the second layer of battery monomers 20.

[0228] The third direction Z is bidirectional, and the two second side walls 30b are oppositely arranged along the third direction Z. One second side wall 30b is connected to one end of the first side wall 30a in the third direction, and the other second side wall 30b is connected to the other end of the first side wall 30a in the third direction.

[0229] The box 30 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.

[0230] According to some embodiments of the present application, the first direction X is parallel to the direction of gravity.

[0231] In the above scheme, the first layer of battery monomers 10 and the second layer of battery monomers 20 are arranged in layers along the first direction X, which can reasonably utilize the space in the direction of gravity and improve the space utilization.

[0232] 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 be able to melt when the internal temperature of the battery cell 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 be able to break when the internal air pressure of the battery cell provided with the pressure relief mechanism reaches a threshold value.

[0233] According to some embodiments of the present application, the embodiments of the present application further provide a battery 100 provided by any of the above embodiments.

[0234] The battery 100 is used to provide electric energy.

[0235] The battery 100 is used to provide electric energy.

[0236] According to some embodiments of the present application, please refer to FIGS. 2-6, the embodiments of the present application provide a battery 100, which includes a first layer of battery cells 10 and a second layer of battery cells 20 arranged in a stack along a first direction X, the first direction X being parallel to the direction of gravity.

[0237] The first layer of battery cells 10 includes a first battery cell group 10a and a second battery cell group 10b arranged at intervals along a second direction Y, the first battery cell group 10a including a plurality of first battery cells 11 arranged in a stack along a third direction, and the second battery cell group 10b including a plurality of first battery cells 11 arranged in a stack along the third direction. The second layer of battery cells 20 includes a third battery cell group 20a and a fourth battery cell group 20b arranged at intervals along the second direction Y, the third battery cell group 20a including a plurality of second battery cells 21 arranged in a stack along the third direction, and the fourth battery cell group 20b including a plurality of second battery cells 21 arranged in a stack along the third direction.

[0238] The first pressure relief mechanism 111 of the first battery cell group 10a is arranged away from the second battery cell group 10b, and the first pressure relief mechanism 111 of the second battery cell group 10b is arranged away from the first battery cell group 10a. The second pressure relief mechanism 211 of the third battery cell group 20a is arranged away from the fourth battery cell group 20b, and the second pressure relief mechanism 211 of the fourth battery cell group 20b is arranged away from the third battery cell group 20a.

[0239] The battery 100 further comprises a box body 30, a first cover body 51 and a second cover body 52. The box body 30 comprises two first wall portions 31, two second wall portions 32 and a partition component 33. The two first wall portions 31 are oppositely arranged along the second direction Y, the two second wall portions 32 are oppositely arranged along the second direction Y, and one first wall portion 31 and one second wall portion 32 are correspondingly and integrally formed. The partition component 33 connects the two first wall portions 31 and the two second wall portions 32. The first cover body 51 connects the two first wall portions 31, and the second cover body 52 connects the two second wall portions 32. The first cover body 51, the partition component 33 and the second cover body 52 are spaced apart along the first direction X. The first layer of battery monomers 10 is arranged in a space surrounded by the two first wall portions 31, the partition component 33 and the first cover body 51, and the second layer of battery monomers 20 is arranged in a space surrounded by the two second wall portions 32, the partition component 33 and the second cover body 52.

[0240] The first wall portion 31 is internally formed with a first collection cavity 311. The first wall portion 31 has a first surface 312 facing the first layer of battery monomers 10. The first surface 312 is provided with a first through hole 313. The first through hole 313 is in communication with the first collection cavity 311. The first through hole 313 is correspondingly arranged with the first pressure relief mechanism 111. The battery 100 further comprises a third pressure relief mechanism 41 arranged on the first wall portion 31. The third pressure relief mechanism 41 is used to release the discharge in the first collection cavity 311.

[0241] The second wall portion 32 is internally formed with a second collection cavity 321. The second wall portion 32 has a second surface 322 facing the second layer of battery monomers 20. The second surface 322 is provided with a second through hole 323. The second through hole 323 is in communication with the second collection cavity 321. The second through hole 323 is correspondingly arranged with the second pressure relief mechanism 211. The battery 100 further comprises a fourth pressure relief mechanism 42 arranged on the second wall portion 32. The fourth pressure relief mechanism 42 is used to release the discharge in the second collection cavity 321.

[0242] The battery 100 further comprises a first partition 34 and a second partition 35. The first partition 34 is arranged on the partition component 33 and is arranged between the first battery monomer group 10a and the second battery monomer group 10b along the second direction Y. The second partition 35 is arranged on the partition component 33 and is arranged between the third battery monomer group 20a and the fourth battery monomer group 20b along the second direction Y.

[0243] The partition component 33 is internally formed with a first flow channel 331 for containing a heat exchange medium. The first partition 34 is internally formed with a second flow channel 341 for containing a heat exchange medium. The second partition 35 is internally formed with a third flow channel 351 for containing a heat exchange medium.

[0244] According to the battery 100 of the embodiment of the present application, the first layer of battery monomers 10 and the second layer of battery monomers 20 share the heat exchange function of the isolation component 33, improving the utilization rate of the isolation component 33; the first pressure relief mechanism 111 corresponds to the first through hole 313, and the second pressure relief mechanism 211 corresponds to the second through hole 323, which can reduce the risk of thermal runaway diffusion and improve the reliability of the battery 100. The first battery monomer group 10a is connected with the isolation component 33 and the first partition 34, the second battery monomer group 10b is connected with the isolation component 33 and the first partition 34, the third battery monomer is connected with the isolation component 33 and the second partition 35, and the fourth battery monomer group 20b is connected with the isolation component 33 and the second partition 35, so that each battery monomer group has good cooling efficiency, which is convenient for improving the reliability of the battery 100.

[0245] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present application, and equivalent components can be substituted therefor. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as 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 first direction in a stack; the first layer of battery cells comprising a plurality of first battery cells, each of the first battery cells being provided with a first pressure relief mechanism; the second layer of battery cells comprising a plurality of second battery cells, each of the second battery cells being provided with a second pressure relief mechanism; wherein the first pressure relief mechanism and the second pressure relief mechanism are arranged at an angle to the first direction.

2. The battery of claim 1, wherein, the first pressure relief mechanism being provided at one end of the first battery cells in a second direction; the second pressure relief mechanism being provided at one end of the second battery cells in the second direction, the second direction being perpendicular to the first direction.

3. The battery of claim 2, wherein, the first pressure relief mechanism and the second pressure relief mechanism are parallel to the second direction.

4. The battery of claim 2 or 3, wherein, the battery further comprising a housing, the first layer of battery cells and the second layer of battery cells being arranged in the housing; the housing comprising a first wall portion, the first wall portion being arranged opposite the first pressure relief mechanism in the second direction, an interior of the first wall portion forming a first collection cavity for collecting emissions of the first battery cells when the first pressure relief mechanism is actuated.

5. The battery of claim 4, wherein, the battery further comprising a third pressure relief mechanism, the third pressure relief mechanism being provided at the first wall portion, the third pressure relief mechanism being configured to release the emissions in the first collection cavity.

6. The battery of claim 4 or 5, wherein, the first wall portion having a first surface facing the first layer of battery cells, the first surface being provided with a first through hole, the first through hole being in communication with the first collection cavity, the first through hole being provided corresponding to the first pressure relief mechanism.

7. The battery of any one of claims 4-6, wherein, the housing further comprising a second wall portion, the second wall portion being arranged opposite the second pressure relief mechanism in the second direction, an interior of the second wall portion forming a second collection cavity for collecting emissions of the second battery cells when the second pressure relief mechanism is actuated.

8. The battery of claim 7, wherein, the second wall portion being integrally formed with the first wall portion.

9. The battery of claim 7 or 8, wherein, the battery further comprising a fourth pressure relief mechanism, the fourth pressure relief mechanism being provided at the second wall portion, the fourth pressure relief mechanism being configured to release the emissions in the second collection cavity.

10. The battery of any one of claims 7-9, wherein, the second wall portion having a second surface facing the second layer of battery cells, the second surface being provided with a second through hole, the second through hole being in communication with the second collection cavity, the second through hole being provided corresponding to the second pressure relief mechanism.

11. The battery of any one of claims 1-10, wherein, the battery further comprising a housing, the first layer of battery cells and the second layer of battery cells being arranged in the housing; the housing comprising a separation member, the separation member being located between the first layer of battery cells and the second layer of battery cells in the first direction, the first layer of battery cells being connected to the separation member, the second layer of battery cells being connected to the separation member, the separation member bearing the first layer of battery cells and the second layer of battery cells.

12. The battery of claim 11, wherein, an interior of the separation member forming a first flow channel for accommodating a heat exchange medium.

13. The battery of claim 11 or 12, wherein, The first layer of battery cells comprises a first battery cell group and a second battery cell group arranged in a second direction perpendicular to the first direction; The box further comprises a first partition arranged in the isolation component, and arranged between the first battery cell group and the second battery cell group in the second direction.

14. The battery of claim 13, wherein, The first pressure relief mechanism of the first battery cell group is arranged on a side of the first battery cell group facing away from the second battery cell group in the second direction, and the first pressure relief mechanism of the second battery cell group is arranged on a side of the second battery cell group facing away from the first battery cell group in the second direction.

15. The battery of claim 13 or 14, wherein, The first battery cell group and the second battery cell group are both connected to the first partition.

16. The battery of any one of claims 13-15, wherein, The first partition is internally formed with a second flow channel for accommodating a heat exchange medium.

17. The battery of any one of claims 13-16, wherein, The first partition is integrally formed with or welded to the isolation component.

18. The battery of any one of claims 11-17, wherein, The box further comprises two first wall portions arranged opposite to each other in a second direction perpendicular to the first direction, and the first layer of battery cells is arranged between the two first wall portions, and the isolation component connects the two first wall portions.

19. The battery of claim 18, wherein, The isolation component is integrally formed with or welded to the two first wall portions.

20. The battery of claim 18 or 19, wherein, The battery further comprises a first cover connected to the two first wall portions, and the first layer of battery cells is located between the first cover and the isolation component in the first direction.

21. The battery of any one of claims 11-20, wherein, The second layer of battery cells comprises a third battery cell group and a fourth battery cell group arranged in a second direction perpendicular to the first direction; The battery further comprises a second partition arranged in the isolation component, and arranged between the third battery cell group and the fourth battery cell group in the second direction.

22. The battery of claim 21, wherein, The second pressure relief mechanism of the third battery cell group is arranged on a side of the third battery cell group facing away from the fourth battery cell group in the second direction, and the second pressure relief mechanism of the fourth battery cell group is arranged on a side of the fourth battery cell group facing away from the third battery cell group in the second direction.

23. The battery of claim 21 or 22, wherein, The third battery cell group and the fourth battery cell group are both connected to the second partition.

24. The battery of any one of claims 21-23, wherein, The second partition is internally formed with a third flow channel for accommodating a heat exchange medium.

25. The battery of any one of claims 21-24, wherein, The second partition is integrally formed with or welded to the isolation component.

26. The battery of any one of claims 21-25, wherein, The box further comprises two second wall portions arranged opposite to each other in the second direction, and the second layer of battery cells is arranged between the two second wall portions, and the isolation component connects the two second wall portions.

27. The battery of claim 26, wherein, The isolation component is integrally formed with or welded to the two second wall portions.

28. The battery of claim 26 or 27, wherein, The battery further comprises a second cover connected to the two second wall portions, and the second layer of battery cells is located between the second cover and the isolation component in the first direction.

29. The battery of any one of claims 1-28, wherein, The first direction is parallel to the direction of gravity.

30. An electrical device comprising the battery of any one of claims 1-29.

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