Battery module, battery pack, and electric device

Abstract

The present application discloses a battery module, a battery pack, and an electric device. The battery module comprises a first output electrode and a second output electrode having different polarities, and at least two battery assemblies; the at least two battery assemblies are stacked and arranged in a first direction; each battery assembly comprises a plurality of battery cells arranged in a second direction; the first output electrode and the second output electrode are arranged in offset positions in the first direction and the second direction, respectively; and the second direction is perpendicular to the first direction. According to the battery module of the present application, the use safety of the battery module can be improved while the working performance of the battery module is ensured.

Description

Battery module, battery pack and electric device

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202421739929.1, filed on July 22, 2024, and entitled "Battery module, battery pack and electric device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, and more particularly, to a battery module, a battery pack and an electric device. BACKGROUND

[0004] In the related art, in order to reasonably distribute electric energy and make the circuit of the battery module operate more conveniently, a distribution box is usually arranged, and the distribution box is arranged to be electrically connected with the positive and negative electrodes of the battery module.

[0005] However, the positive and negative electrodes of the current battery module are prone to arc phenomenon, which reduces the use safety of the battery module. SUMMARY

[0006] The present application aims to provide a battery module, a battery pack and an electric device, which can avoid the arc phenomenon of the positive and negative electrodes of the battery module to a certain extent while realizing electrical connection with the distribution box, thereby improving the use safety of the battery module and solving the technical problem of low safety performance of the battery module caused by the arc phenomenon of the positive and negative electrodes of the battery module in the related art.

[0007] In a first aspect, the present application discloses a battery module, which comprises a first output electrode and a second output electrode, the polarities of the first output electrode and the second output electrode are different, and the first output electrode and the second output electrode are adapted to be electrically connected with a distribution module; the battery module comprises at least two layers of battery assemblies, the at least two layers of battery assemblies are arranged in a stacking manner in a first direction, each layer of the battery assemblies comprises a plurality of battery monomers arranged in a second direction, adjacent two layers of the battery assemblies are electrically connected, the first output electrode and the second output electrode are arranged in a staggered manner in the first direction and the second direction respectively, and the second direction is perpendicular to the first direction.

[0008] In some embodiments, each layer of the battery assemblies comprises a plurality of groups of battery monomers arranged at intervals, each group of the battery monomers comprises a plurality of the battery monomers arranged in the second direction; and the first output electrode and the second output electrode are respectively located in different groups of the battery monomers.

[0009] In some embodiments, in the second direction, the first output electrode and the second output electrode are located in the two outermost groups of the battery monomers; in the first direction, the first output electrode and the second output electrode are located in the two outermost layers of the battery assemblies.

[0010] In some embodiments, the battery monomers extend along a third direction, the battery monomers are provided with a first electrode and a second electrode in the third direction, and two adjacent battery monomers are electrically connected by the first electrode or the second electrode, and the third direction is perpendicular to the first direction and the second direction.

[0011] In some embodiments, the at least two layers of battery assemblies include a first layer of battery assemblies and a second layer of battery assemblies respectively arranged at opposite ends of the battery module in the first direction, and in the second direction, the first electrode or the second electrode of the battery monomer located at the end of the first layer of battery assemblies forms the first output electrode, and the first electrode or the second electrode of the battery monomer located at the other end of the second layer of battery assemblies forms the second output electrode.

[0012] In some embodiments, each layer of the battery assembly has a connecting electrode electrically connected to the battery assembly of an adjacent layer, and the connecting electrode is arranged near the middle of the battery module in the second direction.

[0013] In some embodiments, the first electrode or the second electrode of one of the battery monomers near the middle of the battery module in the second direction forms the connecting electrode.

[0014] The battery pack according to the embodiments of the present application comprises: a shell; a battery module, which is the aforementioned battery module, and is arranged in the shell.

[0015] The battery pack according to the embodiments of the present application can ensure the working performance of the battery pack and improve the use safety of the battery pack by using the aforementioned battery module.

[0016] In some embodiments, the battery pack further comprises a power distribution module, which is arranged in the shell and is electrically connected to the first output electrode and the second output electrode.

[0017] In some embodiments, the power distribution module comprises a box body, and an electrical connector is arranged inside the box body, and the electrical connector is used to electrically connect the battery assemblies of adjacent layers.

[0018] In some embodiments, the battery monomers extend along a third direction, and the power distribution module is located on one side of the battery monomers in the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0019] In some embodiments, each layer of the battery assembly comprises a plurality of groups of battery cells arranged in intervals along the second direction, each group of battery cells comprising a plurality of battery cells arranged in the second direction; and a partition beam is arranged between two adjacent groups of battery cells.

[0020] In some embodiments, the partition beam opposite to the pressure relief structure of the battery cell is formed as a heat insulation beam configured to block heat transfer between two adjacent groups of battery cells.

[0021] In some embodiments, each layer of the battery assembly comprises a plurality of groups of battery cells arranged in intervals along the second direction and a plurality of groups of battery cells arranged in intervals along a third direction, the third direction being perpendicular to the first direction and the second direction; and the partition beam comprises a first partition beam extending along the second direction, the first partition beam or a space between the first partition beam and the battery cell is formed with a first pressure relief channel communicating the pressure relief structure of the battery cell.

[0022] In some embodiments, the partition beam further comprises a second partition beam extending along the third direction, the second partition beam is formed with a second pressure relief channel, the second pressure relief channel communicates the first pressure relief channel and a pressure relief valve of the battery pack.

[0023] In some embodiments, the pressure relief valve is arranged on at least one side wall of the housing in the third direction.

[0024] In some embodiments, a third pressure relief channel is formed in a side wall of the housing or between the housing and the battery module, at least part of the second pressure relief channel communicates the pressure relief valve through the third pressure relief channel.

[0025] In some embodiments, the battery pack further comprises a heat exchange assembly, at least part of the heat exchange assembly is arranged between two adjacent layers of the battery assembly.

[0026] In some embodiments, the heat exchange assembly comprises a heat exchange member and a conveying member, the heat exchange member is arranged between two adjacent layers of the battery assembly, and the conveying member communicates with the heat exchange member for conveying a heat exchange medium to the heat exchange member.

[0027] In a second aspect, the present application discloses a battery pack comprising the battery pack above.

[0028] In a third aspect, the present application discloses a power consumption device comprising the battery pack above.

[0029] The battery module of the application can realize the electrical connection between the battery module and the power distribution module by setting the first output electrode and the second output electrode with different polarities and electrically connecting the first output electrode and the second output electrode with the power distribution module, so that the battery module can operate safely and stably, thereby ensuring the working performance of the battery module; meanwhile, by setting the first output electrode and the second output electrode to be staggered in the first direction and the second direction respectively, a certain distance between the first output electrode and the second output electrode can be ensured, so that the arc phenomenon can be avoided to a certain extent, and the use safety of the battery module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a schematic view of a battery pack according to an embodiment of the application;

[0031] Fig. 2 is an exploded view of the battery pack according to an embodiment of the application;

[0032] Fig. 3 is a top view of the battery pack according to an embodiment of the application, with some structures removed;

[0033] Fig. 4 is a sectional view of Fig. 3 along line A-A;

[0034] Fig. 5 is an enlarged view of region I in Fig. 4;

[0035] Fig. 6 is a top view of the first layer battery assembly assembled to the base according to an embodiment of the application;

[0036] Fig. 7 is a top view of the second layer battery assembly assembled to the base according to an embodiment of the application.

[0037] Reference signs: 1000, battery pack; 100, battery module; 110, first output; 120, second output; 130, battery assembly; 131, battery monomer group; 1311, battery monomer; 132, first layer battery assembly; 133, second layer battery assembly; 134, third output; 200, power distribution module; 300, shell; 310, first accommodating cavity; 320, second accommodating cavity; 330, base; 340, upper cover; 350, sealing cover; 360, plug-in part; 400, partition beam; 410, first partition beam; 420, second partition beam; 421, second pressure relief channel; 422, wiring channel; 500, first pressure relief channel; 600, heat exchange assembly; 610, heat exchange part; 620, conveying part; 700, connecting part; 800, limiting plate; 900, constraint beam. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described below in detail with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and cannot be understood as limiting the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] The battery module 100 according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0041] The battery module 100 according to an embodiment of the present application includes a first output electrode and a second output electrode, the polarities of the first output electrode and the second output electrode are different, and the first output electrode and the second output electrode are adapted to be electrically connected with the power distribution module 200. That is, when the first output electrode is a positive electrode, the second output electrode is a negative electrode, and when the first output electrode is a negative electrode, the second output electrode is a positive electrode, so that when the first output electrode and the second output electrode are respectively electrically connected with the power distribution module 200, the electrical connection between the power distribution module 200 and the battery module 100 can be achieved, so as to provide a stable power supply by using the power distribution module 200, and to achieve power distribution by using the power distribution module 200 and to ensure the safety of the battery module 100, etc.

[0042] Therefore, the first output electrode and the second output electrode referred to herein can also be understood as the total positive electrode and the total negative electrode of the battery module 100.

[0043] In some embodiments, as shown in FIG. 1 and FIG. 2, the battery module 100 comprises a first output member 110 and a second output member 120, the first output member 110 is connected with the first output electrode and the battery module 100 to realize leading out the first output electrode, so as to facilitate the electrical connection between the first output electrode and the power distribution module 200 and reduce the difficulty of the electrical connection between the first output electrode and the power distribution module 200; the second output member 120 is connected with the second output electrode and the battery module 100 to realize leading out the second output electrode, so as to facilitate the electrical connection between the second output electrode and the power distribution module 200 and reduce the difficulty of the electrical connection between the first output electrode and the power distribution module 200, thereby reducing the difficulty of the electrical connection between the battery module 100 and the power distribution module 200.

[0044] In this embodiment, the first output member 110 and the second output member 120 can be connected with copper bars, bus bars, etc.

[0045] As shown in FIG. 2 and FIG. 3, the battery module 100 comprises at least two layers of battery assemblies 130, the at least two layers of battery assemblies 130 are arranged in a stacking manner in a first direction, each layer of battery assembly 130 comprises a plurality of battery monomers 1311, the plurality of battery monomers 1311 are arranged in a second direction, adjacent two layers of battery assemblies 130 are electrically connected, the first output electrode and the second output electrode are arranged in a staggered manner in the first direction and the second direction, and the second direction is perpendicular to the first direction. In this embodiment, the first direction can be understood as the up-down direction shown in FIG. 2, and the second direction can be understood as the left-right direction shown in FIG. 2.

[0046] That is, the battery module 100 comprises at least two layers of battery assemblies 130 arranged in a stacking manner in the up-down direction of the battery module 100, adjacent two layers of battery assemblies 130 are electrically connected, each layer of battery assembly 130 comprises a plurality of battery monomers 1311 arranged in the left-right direction of the battery module 100, so that the occupied space of the battery module 100 can be reasonably utilized, so that the battery module 100 can have multiple layers of battery assemblies 130, and each layer comprises a plurality of battery monomers 1311, that is, the battery module 100 has a large number of battery monomers 1311, so as to facilitate improving the capacity of the battery module 100 and ensuring the working performance of the battery module 100.

[0047] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0048] In some embodiments, the plurality of battery monomers 1311 of each layer of battery assembly 130 are electrically connected by a first electrical connection member, so as to form the battery assembly 130 and ensure the capacity of the battery module 100.

[0049] The first electrical connection can be a connecting copper bar or bus bar, and the plurality of battery monomers 1311 can be connected in series, in parallel, or in a mixed connection in the battery module 100. The mixed connection means that the plurality of battery monomers 1311 are connected in series and in parallel.

[0050] Meanwhile, the first output 110 is connected to the first output electrode, and the second output 120 is connected to the second output electrode. The first output electrode and the second output electrode are arranged in a staggered manner in the first direction and the second direction, respectively, so as to form the first output 110 and the second output 120 arranged in a staggered manner in the first direction and the second direction, respectively (as shown in FIG. 2), thereby avoiding the occurrence of arc discharge between the first output 110 and the second output 120 and improving the safety of the battery module 100.

[0051] It should be noted that the first output electrode and the second output electrode are arranged in a staggered manner in the first direction and the second direction of the battery module 100, respectively, so as to maximize the distance between the first output electrode and the second output electrode, avoid the occurrence of arc discharge between the first output 110 and the second output 120, and improve the safety of the battery module 100.

[0052] As can be seen from the above structure, the battery module 100 of the embodiment of the present application includes a plurality of battery monomers 1311 to ensure the capacity of the battery module 100 and improve the working performance of the battery module 100.

[0053] It should be noted that the plurality of battery monomers 1311 are provided, and especially when the battery monomers 1311 are short knife batteries, there is a risk of insulation, which affects the safety of the battery module 100.

[0054] Therefore, the first output electrode and the second output electrode of the battery module 100 are arranged in a staggered manner in the first direction and the second direction, respectively, so that the first output electrode and the second output electrode can be arranged diagonally to maximize the distance between the first output electrode and the second output electrode, avoid the occurrence of arc discharge, and further improve the safety of the battery module 100.

[0055] That is, the battery module 100 of the present application not only has a large capacity but also has high safety performance.

[0056] It can be understood that, compared with the related art, the total positive electrode and the total negative electrode (the first output electrode and the second output electrode) of the battery module 100 are arranged in a staggered manner in the first direction and the second direction, respectively, to improve the safety of the battery module 100.

[0057] In some embodiments, the battery cell 1311 is a short-blade battery, which has a higher voltage and less high-voltage platform loss compared to a long-blade battery.

[0058] That is, the battery module 100 of the present application includes multiple layers of short-blade batteries.

[0059] Here, the short-blade battery refers to a blade battery with a length in the range of 400-700 mm, and the long-blade battery refers to a blade battery with a length in the range of 800-1000 mm.

[0060] In some embodiments, as shown in FIGS. 2 and 3, the battery cell 1311 extends along a third direction, the battery cell 1311 is provided with a first electrode and a second electrode in the third direction, and two adjacent battery cells 1311 are electrically connected by the first electrode or the second electrode. The third direction is perpendicular to the first direction and the second direction. Here, the third direction can be understood as the front-rear direction shown in FIG. 2. By providing the first electrode and the second electrode in the third direction of the battery cell 1311, the electrical connection between the two adjacent battery cells 1311 can be formed to ensure the working performance of the battery module 100 and reduce the difficulty of electrical connection between the battery cells 1311.

[0061] Here, the first electrode and the second electrode can be understood as the positive electrode and the negative electrode of the battery cell 1311. That is, one of the first electrode and the second electrode forms the positive electrode of the battery cell 1311, and the other forms the negative electrode of the battery cell 1311. The first electrode and the second electrode cooperate to achieve electrical connection between the battery cells 1311.

[0062] At the same time, by arranging the battery cell 1311 to extend along the third direction, the stress problem of the torsion working condition being transmitted to the battery cell 1311 can be avoided to some extent while ensuring that the battery cell 1311 has a certain extension length, thereby prolonging the service life of the battery cell 1311 and improving the safety of the battery cell 1311.

[0063] In some embodiments, as shown in FIGS. 2 and 3, each layer of the battery assembly 130 includes multiple groups of battery cell groups 131 arranged at intervals, and each group of battery cell groups 131 includes multiple battery cells 1311 arranged in the second direction. That is, the battery module 100 of the present application has multiple layers of battery assemblies 130, each layer of the battery assembly 130 has multiple groups of battery cell groups 131, and each group of battery cell groups 131 has multiple battery cells 1311, so that the battery module 100 has multiple battery cells 1311, thereby maximizing the number of battery cells 1311 in the battery module 100 and improving the capacity of the battery module 100.

[0064] In some embodiments, the plurality of battery monomer groups 131 in each group of battery monomer groups 131 are electrically connected by the first electrode and the second electrode to form a single battery monomer group 131, and after the battery monomer group 131 is formed, the battery monomer group 131 has a first lead-out electrode and a second lead-out electrode, which are formed as the positive electrode and the negative electrode of the battery monomer group 131, and the first lead-out electrode and the second lead-out electrode are electrically connected between two adjacent groups of battery monomer groups 131 in the same layer to form a battery assembly 130, and after the battery assembly 130 is formed, the battery assembly 130 forms a connecting electrode, which is formed as a lead-out electrode of the battery assembly 130, and the battery assemblies 130 in adjacent layers are electrically connected by the connecting electrode to form a battery module 100, and after the battery module 100 is formed, the battery module 100 has a first output electrode and a second output electrode, thereby facilitating electrical connection between the battery module 100 and the power distribution module 200.

[0065] In some embodiments, the first lead-out electrode, the second lead-out electrode, the connecting electrode, the first output electrode, and the second output electrode are all directly formed by the first electrode or the second electrode of the battery monomer 1311, thereby reducing the difficulty of electrical connection of the battery module 100.

[0066] In some embodiments, as shown in FIG. 2, each layer of the battery assembly 130 includes a plurality of groups of battery monomer groups 131 arranged in the second direction and a plurality of groups of battery monomer groups 131 arranged in the third direction, and the third direction is perpendicular to the first direction and the second direction. That is, the plurality of groups of battery monomer groups 131 in each layer of the battery assembly 130 are arranged in the second direction and the third direction, respectively, so that each layer of the battery assembly 130 includes at least four groups of battery monomer groups 131, thereby improving the capacity of the battery module 100.

[0067] In some embodiments, in each layer of the battery assembly 130, adjacent groups of battery monomer groups 131 are connected in series, so that while achieving the series connection of the plurality of groups of battery monomer groups 131 in each layer of the battery assembly 130, the extension length of the electrical connecting member connecting the two groups of battery monomer groups 131 is also avoided, which on the one hand reduces the cost and weight of the battery module 100, and on the other hand also avoids the electrical connecting member facing a plurality of battery monomers 1311 at the same time to some extent, thereby improving the safety of the battery module 100.

[0068] In some embodiments, in each layer of the battery assembly 130, adjacent groups of battery monomer groups 131 are electrically connected by a second electrical connecting member, which can also be a connecting copper bar, bus bar, etc.

[0069] Optionally, the first output electrode and the second output electrode are respectively located in different groups of the battery monomer groups 131. It is possible to increase the distance between the first output electrode and the second output electrode, facilitate the first output electrode and the second output electrode to be arranged staggered in the first direction and the second direction respectively, that is, facilitate the first output member 110 and the second output member 120 to be formed staggered in the first direction and the second direction respectively (as shown in FIG. 2), so as to avoid the arc phenomenon between the first output member 110 and the second output member 120, and improve the safety of the battery module 100.

[0070] In some embodiments, in the second direction, the first output electrode and the second output electrode are located in the two outermost groups of the battery monomer groups 131, and in the first direction, the first output electrode and the second output electrode are located in the two outermost layers of the battery assemblies 130. That is, in the first direction and the second direction, the first output electrode and the second output electrode are both arranged with a large distance, so that the first output electrode and the second output electrode are arranged staggered in the first direction and the second direction respectively, and it is beneficial to arrange the first output electrode and the second output electrode diagonally in the battery module 100, so as to maximize the distance between the first output electrode and the second output electrode, avoid the arc phenomenon, and further improve the safety of the battery module 100.

[0071] Of course, in other embodiments, the first output electrode and the second output electrode are not limited to be arranged in the two outermost groups of the battery monomer groups 131 and the two outermost layers of the battery assemblies 130, but can also be arranged in different groups of the battery monomer groups 131 and different layers of the battery assemblies 130 respectively. In this way, it is also possible to arrange the first output electrode and the second output electrode staggered in the first direction and the second direction respectively, and increase the distance between the first output electrode and the second output electrode.

[0072] In some embodiments, as shown in FIG. 3, FIG. 4, FIG. 6 and FIG. 7, the at least two layers of battery assemblies 130 include a first layer of battery assemblies 132 and a second layer of battery assemblies 133, which are respectively arranged at opposite ends of the battery module 100 in the first direction. In the second direction, the first electrode or the second electrode of the battery cell 1311 at the end of the first layer of battery assemblies 132 forms a first output electrode, and the first electrode or the second electrode of the battery cell 1311 at the other end of the second layer of battery assemblies 133 forms a second output electrode. That is, the first output electrode is formed on the battery cell 1311 at the end of the first layer of battery assemblies 132 in the second direction, and the second output electrode is formed on the battery cell 1311 at the other end of the second layer of battery assemblies 133 in the second direction. Since the first layer of battery assemblies 132 and the second layer of battery assemblies 133 are respectively arranged at opposite ends of the battery module 100 in the first direction, the first output electrode and the second output electrode can be arranged to be spaced apart in the first direction and the second direction, respectively, that is, the first output electrode and the second output electrode can be arranged to be staggered in the first direction and the second direction, respectively, so as to increase the distance between the first output electrode and the second output electrode.

[0073] In some embodiments, each layer of battery assemblies 130 has a connecting electrode electrically connected to the battery assembly 130 of the adjacent layer, and the connecting electrode is arranged near the middle of the battery module 100 in the second direction. By arranging each layer of battery assemblies 130 to have a connecting electrode electrically connected to the battery assembly 130 of the adjacent layer, the battery assemblies 130 of the adjacent layers can be electrically connected, and the difficulty of electrical connection is reduced, thereby facilitating the formation of the battery module 100.

[0074] Meanwhile, by arranging the connecting electrode near the middle of the battery module 100 in the second direction, the two connecting electrodes of the battery assemblies 130 of the adjacent layers can be arranged close to each other, the extension length of the electrical connecting member connecting the two connecting electrodes is shortened, and the wiring of the electrical connecting member of the two connecting electrodes is simple, which provides convenience for the manufacturing cost, use safety and space utilization of the battery pack 1000.

[0075] In some embodiments, the connecting electrodes of the battery assemblies 130 of the adjacent layers are electrically connected by a third electrical connecting member, so as to reduce the difficulty of connection of the battery assemblies 130 of the adjacent layers. The third electrical connecting member can also be a connecting copper bar, bus bar, etc.

[0076] In the description of the present application, the features defined as "first", "second", "third" can explicitly or implicitly include one or more of the features, for distinguishing the description features, without order and without difference.

[0077] In some embodiments, as shown in FIGS. 1 and 2, the battery module 100 comprises a plurality of third output members 134, each of which is connected to a connecting electrode of each layer of the battery assembly 130 to lead out the connecting electrode, thereby facilitating the electrical connection of the plurality of connecting electrodes and reducing the difficulty of electrical connection of the plurality of connecting electrodes.

[0078] Optionally, the third output members 134 of adjacent layers are electrically connected by a third electrical connection member to achieve electrical connection of the battery assemblies 130 of adjacent layers and reduce the difficulty of connection of the battery assemblies 130 of adjacent layers.

[0079] It should be noted that by arranging the connecting electrode near the middle of the battery module 100 in the second direction, the third output member 134 of the adjacent layer can be arranged near the middle of the battery module 100 in the second direction, i.e., the third output member 134 of the adjacent layer can be arranged close to each other (as shown in FIG. 2), thereby facilitating the shortening of the extension length of the third electrical connection member connecting the two third output members 134 and the simple wiring of the third electrical connection member, and providing convenience for the manufacturing cost, use safety, and space utilization of the battery pack 1000.

[0080] In summary, the present application can solve the technical problems of the prior art, such as the close distance between the first output electrode and the second output electrode of the multi-layer battery assembly 130 and the long length of the electrical connection member connecting the battery assemblies 130 of adjacent layers.

[0081] In some embodiments, the first electrode or the second electrode of one of the battery monomers 1311 near the middle of the battery module 100 in the second direction forms the connecting electrode. In this way, the difficulty of forming the connecting electrode is reduced, and the connecting electrode can be arranged near the middle of the battery module 100 in the second direction, so that the two connecting electrodes of the battery assemblies 130 of adjacent layers can be arranged close to each other, thereby shortening the extension length of the electrical connection member connecting the two connecting electrodes.

[0082] The battery pack 1000 of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0083] As shown in FIGS. 1 and 2, a battery pack 1000 according to an embodiment of the present application comprises an outer shell 300 and a battery module 100.

[0084] As shown in FIGS. 1 and 2, the battery module 100 is the aforementioned battery module 100, and the specific structure of the battery module 100 is not described here. The battery module 100 is arranged in the outer shell 300.

[0085] By arranging the battery module 100 in the shell 300, the structure of the battery pack 1000 is integrated to reduce the volume of the battery pack 1000, the battery module 100 is protected and supported by the shell 300 to prolong the service life of the battery module 100, the use safety of the battery module 100 is ensured to a certain extent, the structure of the battery module 100 is stable, and the working performance of the battery module 100 is ensured.

[0086] As can be seen from the above structure, the battery pack 1000 of the embodiment of the application can improve the working performance of the battery pack 1000 and ensure the use safety of the battery pack 1000, which is beneficial to prolong the service life of the battery pack 1000.

[0087] In some embodiments, as shown in FIGS. 1 and 2, the shell 300 includes a base 330 and an upper cover 340. The first accommodating cavity 310 with an opening is formed in the base 330. The upper cover 340 is arranged at the opening and connected with the base 330 to form the shell 300, thereby reducing the molding difficulty of the shell 300.

[0088] Here, the connection can be welding, bonding, screw connection, etc.

[0089] Optionally, as shown in FIGS. 1 and 2, the battery module 100 is arranged in the first accommodating cavity 310, so as to arrange the battery module 100 in the shell 300 and reduce the installation difficulty of the battery module 100.

[0090] In some embodiments, as shown in FIGS. 1 and 2, a limiting plate 800 is arranged in the shell 300. The limiting plate 800 is arranged between the battery module 100 and the upper cover 340. The limiting plate 800 is used for limiting the battery module 100, so as to improve the position stability of the battery module 100.

[0091] Here, the limiting plate 800 can be fixedly connected with the battery module 100 and the upper cover 340, respectively, so as to limit the battery module 100 by the limiting plate 800. The fixed connection can be welding, bonding, screw connection, etc.

[0092] In some embodiments, as shown in FIGS. 1 and 2, a constraint beam 900 is further arranged in the shell 300. The constraint beam 900 is arranged between the battery module 100 and the side wall of the first accommodating cavity 310. The constraint beam 900 is used for limiting the battery module 100, so as to further improve the position stability of the battery module 100.

[0093] Here, the constraint beam 900 can be fixedly connected with the battery module 100 and the side wall of the first accommodating cavity 310, respectively, so as to limit the battery module 100 by the constraint beam 900. The fixed connection can be welding, bonding, screw connection, etc.

[0094] In some embodiments, as shown in FIGS. 1 and 2, the battery pack 1000 further comprises a power distribution module 200, which is arranged in the shell 300 and electrically connected with the first output electrode and the second output electrode. Thus, the power distribution module 200 is electrically connected with the battery module 100, so as to provide stable power supply by using the power distribution module 200, and to realize power distribution by using the power distribution module 200 and ensure the safety of the battery module 100, etc.

[0095] Meanwhile, by arranging the power distribution module 200 in the shell 300, the structure of the battery pack 1000 is integrated to reduce the volume of the battery pack 1000, and the power distribution module 200 is protected and supported by the shell 300, so as to prolong the service life of the power distribution module 200, ensure the safety of the power distribution module 200 to a certain extent, and make the structure of the power distribution module 200 stable and ensure the working performance of the power distribution module 200.

[0096] Optionally, as shown in FIGS. 1 and 2, the second accommodating cavity 320 with an opening is formed in the base 330, and the power distribution module 200 is arranged in the second accommodating cavity 320, so as to arrange the power distribution module 200 in the shell 300 and reduce the installation difficulty of the power distribution module 200.

[0097] Optionally, as shown in FIGS. 1 and 2, the battery pack 1000 further comprises a sealing cover 350, which is arranged at the opening of the second accommodating cavity 320, so as to protect the power distribution module 200, prolong the service life of the power distribution module 200, and improve the safety of the power distribution module 200.

[0098] In some embodiments, the power distribution module 200 is a BDU (Battery Disconnect Unit), which can coordinate the function conversion and energy distribution of the motor control system for driving the electrical device, the battery management system, the charging management system, the DC / DC converter, the electric air conditioner, the electric power steering, the brake system and other high-voltage accessories, which helps to ensure the smooth operation and efficient cooperation between each part of the electrical device, improves the safety and stable operation of the high-voltage circuit system of the electrical device, and improves the performance and user experience of the electrical device.

[0099] In some embodiments, as shown in FIGS. 2 and 3, the battery monomer 1311 extends along a third direction, and the power distribution module 200 is located at one side of the battery monomer 1311 in the third direction, which is perpendicular to the first direction and the second direction. In this way, the first output electrode and the second output electrode of the battery monomer 1311 can be arranged close to the power distribution module 200, thereby facilitating the electrical connection between the first output electrode and the second output electrode and the power distribution module 200, reducing the connection difficulty, and shortening the extension length of the first output member 110 and the second output member 120, thereby facilitating the manufacturing cost, use safety, and space utilization of the battery pack 1000.

[0100] In some embodiments, as shown in FIGS. 1 and 2, the shell 300 is provided with a plurality of plug-in connectors 360, which are arranged at intervals in the third direction, and the power distribution module 200 is electrically connected to the plug-in connectors 360 through the connecting member 700, thereby facilitating the electrical connection between the power distribution module 200 and the external power supply or the external load, reducing the electrical connection difficulty between the battery pack 1000 and the external power supply or the external load, so that the battery pack 1000 can effectively charge and discharge, thereby ensuring the working performance of the battery pack 1000.

[0101] Optionally, the connecting member 700 is a connecting copper bar or bus bar.

[0102] It should be noted that when the battery pack 1000 is applied to a vehicle, the third direction is the front-rear direction of the vehicle, that is, the third direction is from the front to the rear of the vehicle, one of the two plug-in connectors 360 is located in the front direction, and the other is located in the rear direction. The plug-in connector 360 located in the front direction is a discharging interface, and the plug-in connector 360 located in the rear direction is a fast charging interface.

[0103] Of course, in other embodiments, the plug-in connector 360 located in the front direction can be a fast charging interface, and the plug-in connector 360 located in the rear direction can be a discharging interface.

[0104] In some embodiments, the power distribution module 200 includes a box body, and the box body is internally provided with an electrical connecting member for electrically connecting the battery assemblies 130 of adjacent layers. That is, the battery assemblies 130 of adjacent layers are not limited to be electrically connected through the third electrical connecting member, but can also be electrically connected through the power distribution module 200. Since the box body of the power distribution module 200 is generally internally provided with a protection switch, a relay, etc., the connection of the battery assemblies 130 of adjacent layers can be controlled and protected by using the protection switch, the relay, etc., thereby improving the use safety of the battery module 100.

[0105] In some embodiments, as shown in FIG. 3, FIG. 6 and FIG. 7, each layer of battery assembly 130 comprises a plurality of groups of battery monomer groups 131 arranged at intervals, each group of battery monomer groups 131 comprising a plurality of battery monomers 1311 arranged in a second direction, and a partition beam 400 arranged between adjacent two groups of battery monomer groups 131. The partition beam 400 can make adjacent battery monomer groups 131 independent of each other, thereby achieving isolation of adjacent battery monomer groups 131, avoiding direct contact between adjacent battery monomer groups 131 to form an electrical connection to a certain extent, and improving the use safety of the battery pack 1000.

[0106] At the same time, the partition beam 400 can also be used to limit the position of adjacent battery monomer groups 131, improve the position stability of the battery monomer groups 131, and ensure the working performance of the battery monomer groups 131.

[0107] In addition, the structural strength of the partition beam 400 supporting the outer shell 300 can also be improved.

[0108] It should be noted that the partition beam 400 arranged between the adjacent two groups of battery monomer groups 131 can be understood as that the partition beam 400 is arranged between the adjacent two groups of battery monomer groups 131 of each layer of battery assembly 130.

[0109] In some embodiments, the partition beam 400 is arranged in the outer shell 300 and fixedly connected with the outer shell 300, so as to ensure the position stability of the partition beam 400 and the working performance of the partition beam 400.

[0110] In some embodiments, the partition beam 400 opposite to the pressure relief structure of the battery monomer 1311 is formed as a heat insulation beam, and the heat insulation beam is configured to block the heat transfer between the adjacent two groups of battery monomer groups 131. In this way, the high-temperature and high-pressure gas discharged through the pressure relief structure of the battery monomer 1311 can be blocked by the partition beam 400, so as to avoid the high-temperature and high-pressure gas from affecting the adjacent group of battery monomer groups 131 through the partition beam 400, thereby avoiding the mutual propagation of the battery monomers 1311 when thermal runaway occurs, and improving the use safety of the battery pack 1000.

[0111] That is to say, the battery pack 1000 of the present application not only can be successfully relieved, but also can avoid the mutual influence of adjacent battery monomer groups 131 when relieved.

[0112] It should be noted that the pressure relief structure mentioned above can be understood as a pressure relief valve, which is used to open when the internal pressure of the battery monomer 1311 exceeds a preset value, so as to achieve the purpose of pressure relief and improve the use safety of the battery monomer 1311. The specific structure of the pressure relief valve is well known to those skilled in the art, and will not be described here.

[0113] In some embodiments, the partition beam 400 opposite the pressure relief structure of the battery monomer 1311 is made of a heat insulation material, so that the partition beam 400 opposite the pressure relief structure of the battery monomer 1311 is formed into a heat insulation beam to reduce the risk of thermal runaway.

[0114] Of course, in other embodiments, all partition beams 400 can be made of heat insulation materials, that is, not limited to setting the partition beam 400 opposite the pressure relief structure of the battery monomer 1311 to be made of a heat insulation material, but all partition beams 400 can be made of a heat insulation material to ensure the heat insulation effect of the partition beam 400, thereby avoiding the mutual propagation of the battery monomers 1311 when thermal runaway occurs, and improving the use safety of the battery pack 1000.

[0115] In a specific example, the partition beam 400 is made of a mica plate, which has a high melting point, so that the partition beam 400 is formed into a heat insulation beam, which can to some extent avoid the heat discharged by the battery monomer 1311 from penetrating the partition beam 400, thereby to some extent avoiding the mutual influence of the adjacent two groups of battery monomer groups 131 during pressure relief, and ensuring the use safety of the battery pack 1000.

[0116] Optionally, in combination with FIGS. 3, 6 and 7, the partition beam 400 includes a first partition beam 410 extending in the second direction, and the first partition beam 410 or the first partition beam 410 and the battery monomer 1311 form a first pressure relief channel 500 provided with a pressure relief structure communicating the battery monomer 1311. In this way, the pressure discharged by the battery monomer 1311 through the pressure relief structure can be discharged into the first pressure relief channel 500, and then the pressure is discharged through the first pressure relief channel 500, thereby reducing the difficulty of pressure relief of the battery monomer 1311, thereby ensuring the use safety of the battery monomer 1311, that is, ensuring the use safety of the battery pack 1000.

[0117] At the same time, since the partition beam 400 is arranged between the adjacent two groups of battery monomer groups 131, the mutual influence of the adjacent two groups of battery monomer groups 131 during pressure relief can be avoided to some extent, thereby further ensuring the use safety of the battery pack 1000.

[0118] It should be noted that since the first partition beam 410 extends in the second direction, the first partition beam 410 can be used to separate the plurality of groups of battery monomer groups 131 arranged in the third direction, so that the plurality of groups of battery monomer groups 131 arranged in the third direction are independent of each other, thereby ensuring the safety of the battery module 100.

[0119] In some embodiments, the first partition beam 410 is hollow inside, and the first partition beam 410 is provided with a communication hole communicating the inside of the first partition beam 410 and the circumferential wall of the battery monomer 1311, thereby forming a first pressure relief channel 500 in the first partition beam 410, which communicates the pressure relief structure of the battery monomer 1311, and reduces the difficulty of pressure relief of the battery monomer 1311.

[0120] In other embodiments, as shown in FIGS. 3, 6 and 7, the first partition beam 410 is spaced apart from the battery monomer 1311 to form a first pressure relief channel 500 between the first partition beam 410 and the battery monomer 1311, which communicates the pressure relief structure of the battery monomer 1311, and reduces the difficulty of forming the first pressure relief channel 500, thereby reducing the difficulty of pressure relief of the battery monomer 1311.

[0121] In some embodiments, as shown in FIGS. 3, 6 and 7, the partition beam 400 further includes a second partition beam 420 extending in a third direction, and the second partition beam 420 is provided with a second pressure relief channel 421 (the specific structure of the second pressure relief channel 421 can be referred to FIG. 5) communicating the first pressure relief channel 500 and a pressure relief valve (not shown in the figure) of the battery pack 1000. That is, the battery pack 1000 is provided with a pressure relief valve, and the pressure relief valve of the battery pack 1000 is communicated with the first pressure relief channel 500 through the second pressure relief channel 421, so that when the pressure discharged from the battery monomer 1311 through the pressure relief structure is discharged into the first pressure relief channel 500, it can be discharged through the second pressure relief channel 421 at the pressure relief valve of the battery pack 1000, and then the pressure is discharged through the pressure relief valve of the battery pack 1000, so as to realize the discharge of high-temperature and high-pressure gas from the battery pack 1000, and ensure the safety of the battery pack 1000.

[0122] At the same time, since the second partition beam 420 extends in the third direction, the second partition beam 420 can be used to separate the plurality of battery monomer groups 131 spaced apart in the second direction, so that the plurality of battery monomer groups 131 spaced apart in the second direction are independent of each other, and the safety of the battery module 100 is ensured.

[0123] That is, by using the first partition beam 410 and the second partition beam 420, the plurality of battery monomer groups 131 of each battery assembly 130 can be separated, so that the plurality of battery monomer groups 131 of each battery assembly 130 are independent of each other, and the safety of the battery module 100 is ensured.

[0124] In some embodiments, as shown in FIGS. 4 and 5, the second partition beam 420 is hollow inside, so as to provide the second pressure relief channel 421 in the second partition beam 420, reduce the difficulty of forming the second pressure relief channel 421, and thereby reduce the difficulty of pressure relief of the battery monomer 1311.

[0125] In some embodiments, as shown in FIGS. 4 and 5, a wiring channel 422 is further formed on the second partition beam 420, and a wire extending to the second partition beam 420 in the battery pack 1000 can be arranged in the wiring channel 422, so as to fix the wire by using the wiring channel 422 and ensure the service life and safety of the wire.

[0126] Here, the wire can be any electrical connection, which is not limited in the present application.

[0127] In some embodiments, the pressure relief valve is arranged on at least one side wall of the shell 300 in the third direction, and the second partition beam 420 extends in the third direction, so that the pressure relief valve is arranged close to the second pressure relief channel 421, thereby facilitating the connection of the pressure relief valve to the first pressure relief channel 500 and the battery pack 1000 through the second pressure relief channel 421, reducing the difficulty of connecting the first pressure relief channel 500 and the pressure relief valve, and facilitating the discharge of high-pressure gas in the first pressure relief channel 500 by using the pressure relief valve, avoiding the accumulation of high-pressure gas in the first pressure relief channel 500 to cause thermal runaway, and improving the safety of the battery pack 1000.

[0128] In some embodiments, a third pressure relief channel (not shown in the figure) is formed in the side wall of the shell 300 or between the shell 300 and the battery module 100, and at least part of the second pressure relief channel 421 is connected to the pressure relief valve through the third pressure relief channel. In this way, when the pressure discharged by the battery cell 1311 through the pressure relief structure is discharged into the first pressure relief channel 500, it can be discharged through the second pressure relief channel 421 and the third pressure relief channel to the pressure relief valve of the battery pack 1000, and then discharged through the pressure relief valve of the battery pack 1000, so as to discharge the high-temperature and high-pressure gas from the battery pack 1000 and ensure the safety of the battery pack 1000.

[0129] In some embodiments, the third pressure relief channel is formed in the hollow part of the side wall of the shell 300, or is formed between the shell 300 and the battery module 100.

[0130] Optionally, the third pressure relief channel is formed in the side wall of the shell 300 away from the connecting piece 700 or between the side wall of the shell 300 away from the connecting piece 700 and the battery module 100, so as to discharge the high-pressure gas in the first pressure relief channel 500 while arranging the third pressure relief channel away from the connecting piece 700 to avoid the influence of high-temperature and high-pressure gas on the connecting piece 700 and improve the safety of the battery pack 1000.

[0131] In a specific example, the pressure relief valve of the battery pack 1000 and the power distribution module 200 are arranged on the same side of the battery module 100 in the third direction. When the pressure discharged by the battery monomer 1311 through the pressure relief structure is discharged into the first pressure relief channel 500, the pressure is first discharged along the first pressure relief channel 500 into the second pressure relief channel 421. In the second pressure relief channel 421, the pressure flows towards the front and rear ends of the third direction, respectively. The pressure flowing to the front side of the third direction can be directly discharged through the pressure relief valve of the battery pack 1000. The pressure flowing to the rear side of the third direction first enters the third pressure relief channel, and then flows from the rear to the front along the third pressure relief channel to the pressure relief valve, and finally is discharged through the pressure relief valve of the battery pack 1000. In this way, the high-temperature and high-pressure gas in the battery pack 1000 is discharged out of the battery pack 1000, ensuring the safety of the battery pack 1000.

[0132] In addition, by arranging the pressure relief valve and the power distribution module 200 on the same side of the battery module 100 in the third direction, the space on one side of the battery module 100 can be reasonably utilized. To some extent, the space occupied by the pressure relief valve and the power distribution module 200 in the housing 300 is avoided, which is beneficial to improve the space utilization of the housing 300, and further improve the capacity of the battery pack 1000.

[0133] In some embodiments, the pressure relief valve and the power distribution module 200 are arranged in the first direction and the second direction, respectively, to some extent, to avoid the influence of the high-temperature and high-pressure gas flowing through the pressure relief valve on the power distribution module 200, prolong the service life of the power distribution module 200, and improve the use safety of the power distribution module 200.

[0134] In some embodiments, as shown in FIGS. 1 and 2, the battery pack 1000 further comprises a heat exchange assembly 600, and at least part of the heat exchange assembly 600 is arranged between two adjacent battery assemblies 130. The purpose of adjusting the temperature of the battery assembly 130 is achieved by using the heat exchange assembly 600, that is, the temperature of the battery monomer 1311 is adjusted, so that the temperature of the battery monomer 1311 during work can be maintained within a suitable temperature range, ensuring the use safety of the battery monomer 1311, and also ensuring the working performance of the battery monomer 1311.

[0135] In some embodiments, as shown in FIGS. 1 and 2, the heat exchange assembly 600 comprises a heat exchange member 610 and a conveying member 620. The heat exchange member 610 is arranged between two adjacent battery assemblies 130, and the conveying member 620 communicates with the heat exchange member 610 to convey heat exchange medium to the heat exchange member 610. Thus, the temperature of the battery assembly 130 can be adjusted by using the heat exchange assembly 600, so as to ensure the use safety and working performance of the battery monomer 1311.

[0136] In some embodiments, the heat exchange member 610 is formed as a heat exchange plate, and the heat exchange plate is in communication with the conveying member 620, so that the heat exchange plate can be filled with a heat exchange medium, and the heat exchange medium is used for heat exchange with two adjacent battery assemblies 130, so as to achieve the purpose of adjusting the temperature of the battery monomer 1311 by using the heat exchange assembly 600.

[0137] Optionally, the conveying member 620 is a conveying pipe, and the conveying pipe is used for conveying the heat exchange medium to the heat exchange member 610, so as to ensure the heat exchange effect of the heat exchange member 610.

[0138] In some embodiments, the heat exchange medium can be refrigerant.

[0139] In some embodiments, as shown in FIGS. 1 and 2, the conveying member 620 and the connecting member 700 are located on the same side of the battery module 100 and are arranged at intervals in the first direction, so as to achieve the purpose of placing the conveying member 620 on one side and placing the conveying member 620 and the connecting member 700 in the same area, thereby effectively increasing the space utilization rate of the battery pack 1000.

[0140] In some embodiments, as shown in FIGS. 1 and 2, the battery module 100 includes two layers of battery assemblies 130, and the two layers of battery assemblies 130 are arranged in a stacked manner in the first direction. In the first direction, the battery monomers 1311 in the battery assembly 130 located in the lower layer can be directly placed in the shell 300, and the battery monomers 1311 in the battery assembly 130 located in the upper layer can be assembled into a plurality of battery monomer groups 131, and then placed in the shell 300 in a hoisting manner, thereby increasing the assembly property and reducing the assembly difficulty of the battery pack 1000.

[0141] The power consumption device of the embodiments of the present application is described below.

[0142] The power consumption device according to the embodiments of the present application includes a battery pack 1000.

[0143] The specific structure of the battery pack 1000 is not described herein.

[0144] As can be seen from the above structure, the power consumption device of the embodiments of the present application can improve the working performance of the power consumption device and ensure the use safety of the power consumption device by using the aforementioned battery pack 1000, thereby being beneficial to prolonging the service life of the power consumption device.

[0145] It should be noted that the power consumption 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 vehicle, an electric car, a ship, a spacecraft, etc.

[0146] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connected", "connecting" should be construed broadlyly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0147] The two-layer battery assembly 130 is shown in FIG. 2 for illustrative purposes, but a person of ordinary skill in the art, after reading the above technical solutions, can obviously understand that the technical solutions can be applied to a three-layer or more-layer battery assembly 130, which also falls within the protection scope of the present application.

[0148] Other configurations of the battery module 100, the battery pack 1000 and the power consumption device according to the embodiments of the present application, such as the specific structure of the power distribution module 200, are known to those skilled in the art, and will not be described in detail here.

[0149] In the description of the present application, the description referring to the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0150] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery module, characterized by, The battery module (100) comprises a first output electrode and a second output electrode, the polarities of the first output electrode and the second output electrode are different, and the first output electrode and the second output electrode are adapted to be electrically connected with a power distribution module (200); The battery module (100) comprises at least two layers of battery assemblies (130), the at least two layers of battery assemblies (130) are arranged in a stacking manner in a first direction, each layer of the battery assemblies (130) comprises a plurality of battery monomers (1311) arranged in a second direction, and adjacent two layers of the battery assemblies (130) are electrically connected, and the first output electrode and the second output electrode are arranged in a staggered manner in the first direction and the second direction, respectively, and the second direction is perpendicular to the first direction.

2. The battery module of claim 1, wherein, Each layer of the battery assemblies (130) comprises a plurality of groups of battery monomer groups (131) arranged at intervals, and each group of the battery monomer groups (131) comprises a plurality of the battery monomers (1311) arranged in the second direction. The first output electrode and the second output electrode are respectively located in different groups of the battery monomer groups (131).

3. The battery module of claim 2, wherein, In the second direction, the first output electrode and the second output electrode are located in the two outermost groups of the battery monomer groups (131); In the first direction, the first output electrode and the second output electrode are located in the two outermost layers of the battery assemblies (130).

4. The battery module of claim 3, wherein, The battery monomer (1311) extends in a third direction, the battery monomer (1311) is provided with a first electrode and a second electrode in the third direction, and adjacent two battery monomers (1311) are electrically connected through the first electrode or the second electrode, and the third direction is perpendicular to the first direction and the second direction.

5. The battery module of claim 4, wherein, The at least two layers of battery assemblies (130) comprise a first layer of battery assemblies (132) and a second layer of battery assemblies (133) respectively arranged at opposite ends of the battery module (100) in the first direction, and in the second direction, the first electrode or the second electrode of the battery monomer (1311) located at the end of the first layer of battery assemblies (132) forms the first output electrode, and the first electrode or the second electrode of the battery monomer (1311) located at the other end of the second layer of battery assemblies (133) forms the second output electrode.

6. The battery module of any one of claims 1-5, wherein, Each layer of the battery assemblies (130) has a connecting electrode electrically connected with the battery assembly (130) of an adjacent layer, and the connecting electrode is arranged close to the middle of the battery module (100) in the second direction.

7. The battery module of claim 6, wherein, The first electrode or the second electrode of one of the battery monomers (1311) close to the middle of the battery module (100) in the second direction forms the connecting electrode.

8. A battery pack, characterized by, Comprise: A shell (300); A battery module (100), the battery module (100) is the battery module (100) according to any one of claims 1-7, and the battery module (100) is arranged in the shell (300).

9. The battery pack of claim 8, wherein, The power distribution module (200) is arranged in the shell (300) and is electrically connected with the first output electrode and the second output electrode.

10. The battery pack (1000) according to claim 9, characterized in that, The power distribution module (200) comprises a box body, and an electrical connector (700) is arranged in the box body and used for electrically connecting the battery assemblies (130) of adjacent layers.

11. The battery pack of claim 9, wherein, The battery cells (1311) extend along a third direction, and the power distribution module (200) is located on one side of the battery cells (1311) in the third direction, and the third direction is perpendicular to the first direction and the second direction.

12. The battery pack of any one of claims 8-11, wherein, Each layer of the battery assembly (130) comprises a plurality of groups of battery cell groups (131) arranged at intervals, and each group of the battery cell groups (131) comprises a plurality of battery cells (1311) arranged in the second direction; and a partition beam (400) is arranged between two adjacent groups of the battery cell groups (131).

13. The battery pack of claim 12, wherein, The partition beam (400) opposite to the pressure relief structure of the battery cell (1311) is formed as a heat insulation beam, and the heat insulation beam is configured to block heat transfer between two adjacent groups of the battery cell groups (131).

14. The battery pack of claim 12, wherein, Each layer of the battery assembly (130) comprises a plurality of groups of battery cell groups (131) arranged at intervals along the second direction and a plurality of groups of battery cell groups (131) arranged at intervals along a third direction, and the third direction is perpendicular to the first direction and the second direction. The partition beam (400) comprises a first partition beam (410) extending along the second direction, and a first pressure relief channel (500) provided with a pressure relief structure communicating with the battery cell (1311) is formed between the first partition beam (410) and the battery cell (1311).

15. The battery pack of claim 14, wherein, The partition beam (400) further comprises a second partition beam (420) extending along the third direction, and a second pressure relief channel (421) is arranged in the second partition beam (420), and the second pressure relief channel (421) communicates with the first pressure relief channel (500) and a pressure relief valve of the battery pack (1000).

16. The battery pack of claim 15, wherein, The pressure relief valve is arranged on at least one side wall of the shell (300) in the third direction.

17. The battery pack of claim 15, wherein, A third pressure relief channel is formed in the side wall of the shell (300) or between the shell (300) and the battery module (100), and at least part of the second pressure relief channel (421) communicates with the pressure relief valve through the third pressure relief channel.

18. The battery pack of any one of claims 8-17, wherein, A heat exchange assembly (600) is further included, and at least part of the heat exchange assembly (600) is arranged between two adjacent layers of the battery assembly (130).

19. The battery pack of claim 18, wherein, The heat exchange assembly (600) comprises a heat exchange member (610) and a conveying member (620), the heat exchange member (610) is arranged between two adjacent layers of the battery assembly (130), and the conveying member (620) communicates with the heat exchange member (610) and is used for conveying a heat exchange medium to the heat exchange member (610).

20. An electrical device, comprising: A battery module (100) according to any one of claims 1-7, or a battery pack (1000) according to any one of claims 8-19.

Images