Battery cluster, assembly method for battery cluster, and electric device
By employing a stacked design of two cluster racks and multiple battery packs within the battery cluster, combined with exhaust channels and connectors, the problem of increased volume and weight caused by drawer-type cluster racks is solved, achieving cost reduction and increased energy density.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BATTEROTECH CO LTD
- Filing Date
- 2026-01-04
- Publication Date
- 2026-07-09
AI Technical Summary
The large number of drawer-type cluster racks in existing battery clusters leads to increased size and weight, thus raising production costs.
The design employs two cluster frames and multiple battery packs, reducing the volume and weight of the battery clusters through stacking and connection, and improving structural stability and safety by utilizing venting channels and connectors.
This reduces the production cost and installation difficulty of battery clusters, while improving the energy density and lifespan of battery clusters, and ensuring the safety and connection stability of battery packs.
Smart Images
Figure CN2026070186_09072026_PF_FP_ABST
Abstract
Description
Battery clusters, battery cluster assembly methods, and electrical devices This application claims priority to Chinese Patent Application No. 202510020478.9, filed on January 6, 2025, entitled "Battery Cluster, Method for Assembling Battery Cluster and Electrical Device", the entire contents of which are incorporated herein by reference. Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery cluster, a method for assembling the battery cluster, and an electrical device. Background Technology
[0002] Some electrical devices on the market, such as electric heavy trucks and large equipment like energy storage cabinets, require battery packs with extremely high energy density. Therefore, multiple battery packs can be connected in parallel or series on a battery cluster to form a battery cluster with a large energy density, thereby meeting the power supply needs of the aforementioned electrical devices.
[0003] In related technologies, a battery cluster includes multiple battery packs and multiple drawer-type cluster frames. A battery pack is hoisted and pushed into a drawer-type cluster frame, where it is fixedly connected. However, the excessive number of drawer-type cluster frames increases the size and weight of the battery cluster, thereby increasing its production cost. Summary of the Invention
[0004] This application provides a battery cluster, a method for assembling the battery cluster, and an electrical device, which reduces the volume and weight of the battery cluster, thereby reducing the production cost of the battery cluster.
[0005] In a first aspect, this application provides a battery cluster, including: a first battery pack, a second battery pack, a first cluster frame, and a second cluster frame. The first battery pack and the second battery pack are stacked along a first direction, wherein the first direction is the height direction of the battery cluster. An intermediate battery pack connects the first battery pack and the second battery pack. The first cluster frame is connected to the first battery pack and provides structural protection for the first and second battery packs. The second cluster frame is connected to the second battery pack and provides structural protection for the first and second battery packs.
[0006] According to the first aspect of this application, the battery cluster includes a first battery pack, a second battery pack, a first cluster frame, and a second cluster frame. The first battery pack, an intermediate battery pack, and the second battery pack are stacked along a first direction, allowing the first and second battery packs to simultaneously supply power to the electrical device, thereby meeting the power supply needs of the electrical device. The first cluster frame is connected to the first battery pack, and the second cluster frame is connected to the second battery pack, preventing collision damage between the first and second battery packs, thus ensuring the service life of the battery cluster and consequently ensuring the normal operation of the electrical device. Furthermore, the battery cluster only includes the first and second cluster frames, reducing the volume and weight of the battery cluster, and lowering the production cost and lifting difficulty of the battery cluster.
[0007] In one possible design, the battery cluster may include one or more intermediate battery packs. Multiple intermediate battery packs are stacked along a first direction, and each intermediate battery pack is connected between a first battery pack and a second battery pack.
[0008] Based on the description of the above embodiments, the battery cluster includes multiple intermediate battery packs, which increases the number of battery packs and improves the energy density of the battery cluster, thereby enabling the battery cluster to adapt to electrical devices with greater power supply requirements.
[0009] In one possible design, a first battery pack has a first frame and a second frame arranged opposite each other along a first direction. A second battery pack has a third frame and a fourth frame arranged opposite each other along the first direction. An intermediate battery pack has two fifth frames arranged opposite each other along the first direction. The two fifth frames are connected to the first frame and the third frame, respectively. A first cluster frame is connected to the second frame, and a second cluster frame is connected to the fourth frame, so that the first battery pack, the intermediate battery pack, and the second battery pack are fixedly connected between the first cluster frame and the second cluster frame.
[0010] Based on the description of the above embodiments, the first battery pack has a first frame and a second frame disposed opposite to each other along a first direction. The second battery pack has a third frame and a fourth frame disposed opposite to each other along the first direction. The intermediate battery pack has two fifth frames disposed opposite to each other along the first direction. The two fifth frames are respectively connected to the first frame and the third frame, the first cluster frame is connected to the second frame, and the second cluster frame is connected to the fourth frame. This ensures the stability of the connections between the first cluster frame, the first battery pack, the intermediate battery pack, the second battery pack, and the second cluster frame, while also ensuring the safety of the first battery pack, the intermediate battery pack, and the second battery pack.
[0011] In one possible design, a first venting channel is provided between the first battery pack and the intermediate battery pack. The first venting channel is located on the first frame and / or the fifth frame. A second venting channel is provided between the second battery pack and the intermediate battery pack. The second venting channel is located on the third frame and / or the fifth frame.
[0012] Based on the description of the above embodiments, a first exhaust channel is disposed on a first frame and / or a fifth frame, and a second exhaust channel is disposed on a third frame and / or a fifth frame. The first exhaust channel is used to discharge gas and condensate from the first battery pack and the intermediate battery pack, and the second exhaust channel is used to discharge gas and condensate from the second battery pack and the intermediate battery pack, thereby ensuring the safety of the first battery pack, the second battery pack, and the intermediate battery pack.
[0013] In one possible design, both the first and second exhaust channels are grooved structures.
[0014] Based on the description of the above embodiments, both the first exhaust channel and the second exhaust channel are groove structures, which create a gap between the connection surfaces of the first battery pack and the intermediate battery pack, and also create a gap between the connection surfaces of the second battery pack and the intermediate battery pack, so that the condensate and gas in the first battery pack, the intermediate battery pack and the second battery pack can be discharged smoothly.
[0015] In one possible design, the first, second, third, fourth, and fifth frame frames are all steel profile structures. These profile structures have cavities to enhance the structural strength of the first, second, third, fourth, and fifth frame frames.
[0016] Based on the description of the above embodiments, the first frame, second frame, third frame, fourth frame, and fifth frame are all steel profile structures. This can improve the stability of the connection between the first cluster frame, the first battery pack, the intermediate battery pack, the second battery pack, and the second cluster frame, and improve the overall structural strength of the battery cluster, preventing collision damage to the battery cluster.
[0017] In one possible design, multiple first connectors are provided between the first cluster frame and the first battery pack for securing the first cluster frame and the first battery pack. Multiple second connectors are provided between the first battery pack and the intermediate battery pack for securing the first battery pack and the intermediate battery pack. Multiple third connectors are provided between the second battery pack and the intermediate battery pack for securing the second battery pack and the intermediate battery pack. Multiple fourth connectors are provided between the second cluster frame and the second battery pack for securing the second cluster frame and the second battery pack.
[0018] Based on the description of the above embodiments, the first cluster frame and the first battery pack are connected by multiple first connectors, the first battery pack and the intermediate battery pack are connected by second connectors, the second battery pack and the intermediate battery pack are connected by third connectors, and the second cluster frame and the second battery pack are connected by fourth connectors. This ensures the structural strength of the battery cluster while facilitating the inspection and replacement of the first cluster frame, the first battery pack, the intermediate battery pack, the second battery pack, and the second cluster frame.
[0019] In one possible design, the number of the first connector, the second connector, the third connector, and the fourth connector is greater than or equal to eight.
[0020] Based on the description of the above embodiments, when the number of the first connector, the second connector, the third connector, and the fourth connector are all greater than or equal to 8, the structural strength of the battery cluster can be guaranteed while reducing the production cost of the battery cluster.
[0021] Secondly, this application provides a method for assembling a battery cluster, used for assembling the battery cluster described in any of the above embodiments, the method comprising:
[0022] Obtain the first battery pack, the intermediate battery pack, and the second battery pack.
[0023] The first battery pack, the intermediate battery pack, and the second battery pack are stacked sequentially along a first direction to obtain a first assembly.
[0024] Obtain the second cluster frame.
[0025] The second cluster frame is connected to the second battery pack, so that the second cluster frame and the first assembly assembly form a second assembly assembly.
[0026] Obtain the first cluster frame.
[0027] The first cluster frame is connected to the first battery pack to form the battery cluster, and the first battery pack, the intermediate battery pack and the second battery pack are fixedly connected between the first cluster frame and the second cluster frame.
[0028] Thirdly, this application provides an electrical device, characterized in that it includes a battery cluster as described in any of the above embodiments. The battery pack in the battery cluster is used to provide electrical energy.
[0029] The advantages of the battery pack assembly method provided in the second aspect and the power supply device provided in the third aspect can be found in the advantages of the first aspect and the various possible embodiments of the first aspect, and will not be repeated here. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 is a schematic diagram of a battery cluster structure in an embodiment of this application.
[0032] Figure 2 is a schematic diagram of a structure of the first battery pack in an embodiment of this application.
[0033] Figure 3 is a schematic diagram of a second battery pack in an embodiment of this application.
[0034] Figure 4 is a schematic diagram of the structure of an intermediate battery pack in an embodiment of this application.
[0035] Figure 5 is an enlarged view of part A in Figure 1.
[0036] Explanation of reference numerals in the attached figures:
[0037] 100 - Battery cluster; 1 - First battery pack; 11 - First frame; 12 - Second frame; 13 - First exhaust channel; 2 - Second battery pack; 21 - Third frame; 22 - Fourth frame; 23 - Second exhaust channel; 3 - Middle battery pack; 31 - Fifth frame; 4 - First cluster frame; 5 - Second cluster frame; 6 - Connector; X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0039] 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 herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0040] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples.
[0041] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0042] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0043] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0044] Furthermore, the descriptions of directions such as the X direction, Y direction, and Z direction used to explain the operation and construction of the components in this embodiment are not absolute but relative. Although these directions are appropriate when the components are in the positions shown in the figure, they should be interpreted differently when these positions change to correspond to the changes.
[0045] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.
[0046] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).
[0047] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0048] An electrical appliance is an electrical device that uses electrical energy to perform a specific function. Electrical appliances can include, but are not limited to, electric bicycles, electric passenger vehicles, electric commercial vehicles, electric heavy trucks, and energy storage cabinets. All of these devices can be powered by battery packs to meet their respective power needs.
[0049] Some electrical devices on the market, such as electric heavy trucks and large equipment like energy storage cabinets, require battery packs with extremely high energy density. Therefore, multiple battery packs can be connected in parallel or series on a battery cluster to form a battery cluster with a large energy density, thereby meeting the power supply needs of the aforementioned electrical devices.
[0050] In related technologies, a battery cluster includes multiple battery packs and multiple drawer-type cluster frames. A battery pack is hoisted and pushed into a drawer-type cluster frame, where it is fixedly connected. However, the excessive number of drawer-type cluster frames increases the size and weight of the battery cluster, thereby increasing its production cost.
[0051] Based on this, this application provides a battery cluster, a method for assembling the battery cluster, and an electrical device. By setting two cluster frames and multiple battery packs in the battery cluster, the volume and weight of the battery cluster are reduced, thereby lowering the production cost of the battery cluster. The following is a detailed description with reference to Figures 1-5.
[0052] In a first aspect, this application provides a battery cluster 100, which may include: a first battery pack 1, a second battery pack 2, a first cluster frame 4, and a second cluster frame 5. The first battery pack 1 and the second battery pack 2 are stacked along a first direction X. Wherein, the first direction X is the height direction of the battery cluster 100. An intermediate battery pack 3 connects the first battery pack 1 and the second battery pack 2. The first cluster frame 4 is connected to the first battery pack 1 and provides structural protection for the first battery pack 1 and the second battery pack 2. The second cluster frame 5 is connected to the second battery pack 2 and provides structural protection for the first battery pack 1 and the second battery pack 2.
[0053] Battery cluster 100 may include a cluster frame and a battery pack.
[0054] The cluster frame is used to mount the battery pack and provide structural protection for it.
[0055] The battery pack converts chemical energy into electrical energy. The battery pack can then provide power to electrical devices.
[0056] Furthermore, large equipment such as electric heavy trucks and energy storage cabinets consume a large amount of electrical energy when operating. Therefore, multiple battery packs can be stacked along the height of the battery cluster 100 and connected in parallel or series to simultaneously power the aforementioned electrical devices, thereby meeting their power supply needs.
[0057] For example, as shown in FIG1, the plurality of battery packs may include a first battery pack 1 and a second battery pack 2. The first battery pack 1 is a battery pack disposed at the top along a first direction X, and the second battery pack 2 is a battery pack disposed at the bottom along the first direction X. The first direction X is the height direction of the battery cluster 100.
[0058] Furthermore, electric heavy trucks and other electrical devices may experience bumps or collisions during use, causing damage to the battery packs within these devices. This damage can affect the lifespan of the battery clusters 100 and consequently impact the normal operation of the electrical device.
[0059] Based on this, the first battery pack 1 and the second battery pack 2 can be fixed on the cluster frame to form a battery cluster 100. The cluster frame protects the battery packs from impact damage.
[0060] Furthermore, since the battery cluster 100 is installed as a whole within the electrical device, any battery swapping operation or maintenance operation of the battery cluster 100 requires hoisting the entire battery cluster 100. In related technologies, the number of cluster frames in the battery cluster 100 is equal to the number of battery packs, so that one battery pack is installed on one cluster frame. This results in a larger volume and weight for the battery cluster 100, increasing its production cost and hoisting difficulty.
[0061] Based on this, in order to reduce the production cost of the battery cluster 100 and the difficulty of hoisting the battery cluster 100, as shown in Figure 1, this application is designed with a first cluster frame 4 and a second cluster frame 5, so that the first cluster frame 4 is connected to the first battery pack 1 and the second cluster frame 5 is connected to the second battery pack 2.
[0062] The first cluster frame 4 is a frame structure, and it can be made of steel or aluminum. When the first cluster frame 4 is made of steel, its structural strength is higher. The first cluster frame 4 is connected to the first battery pack 1 and protects the sides of the first battery pack 1 and the second battery pack 2 facing the first cluster frame 4 from collision damage.
[0063] In addition, as shown in Figure 1, when the first cluster frame 4 is connected to the first battery pack 1, it is located on top of the battery cluster 100, so that the first cluster frame 4 can provide a hoisting position for hoisting the battery cluster 100, thereby facilitating the power replacement of the electrical device.
[0064] Similarly, the second cluster frame 5 is a frame structure, and it can be made of steel or aluminum. When the second cluster frame 5 is made of steel, its structural strength is higher. The second cluster frame 5 is connected to the second battery pack 2 and is used to protect the sides of the second battery pack 2 and the first battery pack 1 facing the second cluster frame 5 from collision damage.
[0065] Additionally, as shown in Figure 1, the second cluster frame 5 is connected to the second battery pack 2 and is located at the bottom of the battery cluster 100. The second cluster frame 5 can be connected to an electrical device, allowing the battery cluster 100 to be mounted on the electrical device. For example, the second cluster frame 5 can be connected to the vehicle chassis.
[0066] In summary, the first cluster frame 4 and the second cluster frame 5 protect the multiple battery packs from both ends of the stacking direction, preventing collision damage and thus ensuring the service life of the battery cluster 100 and the normal operation of the electrical device. Furthermore, the battery cluster 100 of this application includes only the first cluster frame 4 and the second cluster frame 5, reducing the number of cluster frames, lightening the size and weight of the battery cluster 100, and lowering the production cost and lifting difficulty.
[0067] In addition, when the first cluster frame 4 and / or the second cluster frame 5 are made of aluminum, the first cluster frame 4 and / or the second cluster frame 5 are lighter, which further reduces the difficulty of hoisting the battery cluster 100.
[0068] According to the description of the above embodiments, the battery cluster 100 provided in the first aspect of this application includes a first battery pack 1, a second battery pack 2, a first cluster frame 4, and a second cluster frame 5. The first battery pack 1 and the second battery pack 2 are stacked along a first direction X, so that the first battery pack 1 and the second battery pack 2 can simultaneously supply power to the electrical device to meet the power supply needs of the electrical device. The first cluster frame 4 is connected to the first battery pack 1, and the second cluster frame 5 is connected to the second battery pack 2 to prevent collision damage between the first battery pack 1 and the second battery pack 2, thereby ensuring the service life of the battery cluster 100 and ensuring the normal use of the electrical device. Furthermore, the battery cluster 100 only includes the first cluster frame 4 and the second cluster frame 5, which reduces the volume and weight of the battery cluster 100, and also reduces the production cost and lifting difficulty of the battery cluster 100.
[0069] Furthermore, in some embodiments, as shown in FIG1, the battery cluster 100 may include one or more intermediate battery packs 3. The plurality of intermediate battery packs 3 are stacked along a first direction X, and all of the plurality of intermediate battery packs 3 are connected between the first battery pack 1 and the second battery pack 2.
[0070] The intermediate battery pack 3 is a battery pack located between the first battery pack 1 and the second battery pack 2, so that the first battery pack 1, the second battery pack 2 and the intermediate battery pack 3 are integrated into a whole structure, which facilitates the battery swapping operation of the power device or the maintenance operation of the battery cluster 100.
[0071] According to the description of the above embodiments, the battery cluster 100 includes a plurality of intermediate battery packs 3, which increases the number of battery packs and improves the energy density of the battery cluster 100, thereby enabling the battery cluster 100 to adapt to electrical devices with greater power supply requirements.
[0072] Specifically, the number of intermediate battery packs 3 can be selected according to the power supply requirements of the power-consuming device. Furthermore, since the battery cluster 100 of this application only includes a first cluster frame 4 and a second cluster frame 5, there is no need to adapt different numbers of cluster frames for different numbers of intermediate battery packs 3, thus making the battery cluster 100 universal and further reducing the production cost of the battery cluster 100.
[0073] Furthermore, this application can provide a detailed description of the connection method between the first battery pack 1, the second battery pack 2, the intermediate battery pack 3, the first cluster frame 4, and the second cluster frame 5:
[0074] In some embodiments, as shown in Figures 2-4, a first battery pack 1 has a first frame 11 and a second frame 12 disposed opposite each other along a first direction X. A second battery pack 2 has a third frame 21 and a fourth frame 22 disposed opposite each other along the first direction X. An intermediate battery pack 3 has two fifth frames 31 disposed opposite each other along the first direction X. The two fifth frames 31 are respectively connected to the first frame 11 and the third frame 21. A first cluster frame 4 is connected to the second frame 12, and a second cluster frame 5 is connected to the fourth frame 22, so that the first battery pack 1, the intermediate battery pack 3, and the second battery pack 2 are fixedly connected between the first cluster frame 4 and the second cluster frame 5.
[0075] A battery pack may include battery modules and a housing structure. The battery modules convert chemical energy into electrical energy. The battery modules are housed within the housing structure, which protects them from damage or failure due to external factors, thus ensuring the safety of the battery pack.
[0076] The first battery pack 1 is connected to the intermediate battery pack 3 and the first cluster frame 4 on opposite sides along the first direction X, respectively. To balance the stability of the connection and the safety of the battery pack, a first frame 11 and a second frame 12 are respectively provided on both sides of the first battery pack 1 along the first direction X. The intermediate battery pack 3 is connected to the first frame 11, and the first cluster frame 4 is connected to the second frame 12. This prevents the shell structure of the first battery pack 1 from directly bearing stress due to the connection, thus ensuring that the shell structure will not be damaged by stress, and that the connection will not fail due to damage to the shell structure. This achieves a balance between the stability of the connection and the safety of the battery pack.
[0077] Similarly, the second battery pack 2 is connected to the second cluster frame 5 and the intermediate battery pack 3 on both sides along the first direction X, respectively. To balance the stability of the connection and the safety of the battery pack, a third frame 21 and a fourth frame 22 are respectively provided on both sides of the second battery pack 2 along the first direction X. The intermediate battery pack 3 is connected to the third frame 21, and the second cluster frame 5 is connected to the fourth frame 22. This prevents the shell structure of the second battery pack 2 from directly bearing stress due to the connection, thus ensuring that the shell structure will not be damaged by stress, and that the connection will not fail due to damage to the shell structure. In other words, both the stability of the connection and the safety of the battery pack are balanced.
[0078] Similarly, the intermediate battery pack 3 is connected to the first battery pack 1 and the second battery pack 2 on both sides along the first direction X. To balance the stability of this connection and the safety of the battery pack, two fifth frame edges 31 are provided on both sides of the intermediate battery pack 3 along the first direction X. The first battery pack 1 and the second battery pack 2 are connected to the two fifth frame edges 31 respectively. This prevents the shell structure of the intermediate battery pack 3 from directly bearing stress due to the connection, thus ensuring that the shell structure will not be damaged by stress, and that the connection will not fail due to damage to the shell structure. In other words, both the stability of the connection and the safety of the battery pack are balanced.
[0079] In summary, the first battery pack 1 has a first frame 11 and a second frame 12 arranged opposite each other along the first direction X. The second battery pack 2 has a third frame 21 and a fourth frame 22 arranged opposite each other along the first direction X. The intermediate battery pack 3 has two fifth frames 31 arranged opposite each other along the first direction X. The two fifth frames 31 are respectively connected to the first frame 11 and the third frame 21, the first cluster frame 4 is connected to the second frame 12, and the second cluster frame 5 is connected to the fourth frame 22. This ensures the stability of the connections between the first cluster frame 4, the first battery pack 1, the intermediate battery pack 3, the second battery pack 2, and the second cluster frame 5, while also ensuring the safety of the first battery pack 1, the intermediate battery pack 3, and the second battery pack 2.
[0080] Specifically, in some embodiments, the first border 11, the second border 12, the third border 21, the fourth border 22 and the fifth border 31 have cavities to enhance the structural strength of the first border 11, the second border 12, the third border 21, the fourth border 22 and the fifth border 31.
[0081] Specifically, the first frame 11, the second frame 12, the third frame 21, the fourth frame 22, and the fifth frame 31 can be profile structures or roll-formed steel structures. In addition, the materials of the first frame 11, the second frame 12, the third frame 21, the fourth frame 22, and the fifth frame 31 are not limited to steel or aluminum.
[0082] The steel structure has good structural strength. The first frame 11, the second frame 12, the third frame 21, the fourth frame 22 and the fifth frame 31 are all made of steel, which can improve the stability of the connection between the first cluster frame 4, the first battery pack 1, the intermediate battery pack 3, the second battery pack 2 and the second cluster frame 5, and improve the overall structural strength of the battery cluster 100, avoiding collision damage to the battery cluster 100.
[0083] Among them, aluminum is lightweight. The first frame 11, the second frame 12, the third frame 21, the fourth frame 22 and the fifth frame 31 are all made of aluminum, which can reduce the weight of the first battery pack 1, the second battery pack 2 and the third battery pack 3, and reduce the difficulty of hoisting the battery cluster 100.
[0084] Furthermore, the profile structure may have one or more cavities. These cavities are used to absorb stress, thereby improving structural strength. Therefore, the first frame 11, second frame 12, third frame 21, fourth frame 22, and fifth frame 31 are all profile structures, which can further improve the stability of the connection between the first cluster frame 4, the first battery pack 1, the intermediate battery pack 3, the second battery pack 2, and the second cluster frame 5, and improve the overall structural strength of the battery cluster 100, preventing collision damage to the battery cluster 100.
[0085] In summary, the first frame 11, the second frame 12, the third frame 21, the fourth frame 22, and the fifth frame 31 are all steel profile structures. This improves the stability of the connection between the first cluster frame 4, the first battery pack 1, the intermediate battery pack 3, the second battery pack 2, and the second cluster frame 5, and enhances the overall structural strength of the battery cluster 100, preventing collision damage to the battery cluster 100.
[0086] Furthermore, the battery pack can convert chemical energy into electrical energy. Specifically, the chemical reactions occurring within the battery pack produce gases and create a temperature difference between the inside and outside of the battery pack, leading to condensation on the battery pack's casing. Prolonged contact between these gases and condensation with the casing can cause corrosion and aging, thus affecting the battery pack's safety.
[0087] Based on this, in some embodiments, as shown in Figures 2-4, a first exhaust channel 13 is provided between the first battery pack 1 and the intermediate battery pack 3. The first exhaust channel 13 is disposed on the first frame 11 and / or the fifth frame 31. A second exhaust channel 23 is provided between the second battery pack 2 and the intermediate battery pack 3. The second exhaust channel is disposed on the third frame 21 and / or the fifth frame 31.
[0088] Specifically, the first battery pack 1 and the intermediate battery pack 3 are connected by a first frame 11 and a fifth frame 31. Therefore, the first exhaust channel 13 provided on the first frame 11 and / or the fifth frame 31 can be used to discharge gas and condensate from the first battery pack 1 and the intermediate battery pack 3 to ensure the safety of the first battery pack 1 and the intermediate battery pack 3.
[0089] The second battery pack 2 and the intermediate battery pack 3 are connected by the third frame 21 and the fifth frame 31. Therefore, the second exhaust channel 23 provided on the third frame 21 and / or the fifth frame 31 can be used to discharge the gas and condensate in the second battery pack 2 and the intermediate battery pack 3 to ensure the safety of the second battery pack 2 and the intermediate battery pack 3.
[0090] Furthermore, the first frame 11, the third frame 21, and the fifth frame 31 are all profile structures with high structural strength. Therefore, when the first exhaust channel 13 and the second exhaust channel 23 are opened on the first frame 11, the third frame 21, and the fifth frame 31, the structural strength of the battery pack can be guaranteed, further ensuring the safety of the first battery pack 1, the intermediate battery pack 3, and the second battery pack 2.
[0091] In summary, the first exhaust channel 13 is disposed on the first frame 11 and / or the fifth frame 31, and the second exhaust channel is disposed on the third frame 21 and / or the fifth frame 31. The first exhaust channel 13 is used to discharge gas and condensate from the first battery pack 1 and the intermediate battery pack 3, and the second exhaust channel 23 is used to discharge gas and condensate from the second battery pack 2 and the intermediate battery pack 3, thereby ensuring the safety of the first battery pack 1, the second battery pack 2, and the intermediate battery pack 3.
[0092] Furthermore, this application can further specify the structure of the first exhaust passage 13 and the second exhaust passage 23:
[0093] In some embodiments, both the first exhaust channel 13 and the second exhaust channel 23 are groove structures.
[0094] Specifically, both the first exhaust channel 13 and the second exhaust channel 23 can be groove structures. As shown in Figure 4, the groove structures provided on the first frame 11 and / or the fifth frame 31 can create a gap between the connecting surfaces of the first battery pack 1 and the intermediate battery pack 3, allowing gas and condensate to be discharged through the gap. Similarly, the groove structures provided on the third frame 21 or the fifth frame 31 can create a gap between the connecting surfaces of the second battery pack 2 and the intermediate battery pack 3, allowing gas and condensate to be discharged through the gap.
[0095] Furthermore, one or more of the aforementioned grooves may be formed on the first border 11, the third border 21, and the fifth border 31, and the groove structure may be formed in any direction.
[0096] For example, as shown in Figures 2-4, one or more groove structures are formed on the first border 11, the third border 21, or the fifth border 31 along the second direction Y. One or more groove structures are formed on the first border 11, the third border 21, or the fifth border 31 along the third direction Z. The second direction Y can be the length direction of the battery cluster 100. The third direction Z can be the width direction of the battery cluster 100.
[0097] In summary, both the first exhaust channel 13 and the second exhaust channel 23 are groove structures, which create a gap between the connecting surfaces of the first battery pack 1 and the intermediate battery pack 3, and also create a gap between the connecting surfaces of the second battery pack 2 and the intermediate battery pack 3, so that the condensate and gas in the first battery pack 1, the intermediate battery pack 3 and the second battery pack 2 can be discharged smoothly.
[0098] Furthermore, to facilitate the inspection and replacement of the first cluster frame 4, the first battery pack 1, the intermediate battery pack 3, the second battery pack 2, and the second cluster frame 5, this application also includes the following improvements:
[0099] In some embodiments, a plurality of first connectors 6 are provided between the first cluster frame 4 and the first battery pack 1 for fixing the first cluster frame 4 and the first battery pack 1. A plurality of second connectors 6 are provided between the first battery pack 1 and the intermediate battery pack 3 for fixing the first battery pack 1 and the intermediate battery pack 3. A plurality of third connectors 6 are provided between the second battery pack 2 and the intermediate battery pack 3 for fixing the second battery pack 2 and the intermediate battery pack 3. A plurality of fourth connectors 6 are provided between the second cluster frame 5 and the second battery pack 2 for fixing the second cluster frame 5 and the second battery pack 2.
[0100] Specifically, a plurality of first connectors 6 are provided between the first cluster frame 4 and the first battery pack 1 to fix the first cluster frame 4 and the first battery pack 1, ensuring the connection strength between the first cluster frame 4 and the first battery pack 1 while making the connection between the first cluster frame 4 and the first battery pack 1 detachable.
[0101] Multiple second connectors 6 are provided between the first battery pack 1 and the intermediate battery pack 3 to fix the first battery pack 1 and the intermediate battery pack 3, ensuring the connection strength between the first battery pack 1 and the intermediate battery pack 3 while making the connection between the first battery pack 1 and the intermediate battery pack 3 detachable.
[0102] Multiple third connectors 6 are provided between the second battery pack 2 and the intermediate battery pack 3 to fix the second battery pack 2 and the intermediate battery pack 3, ensuring the connection strength between the second battery pack 2 and the intermediate battery pack 3 while making the connection between the second battery pack 2 and the intermediate battery pack 3 detachable.
[0103] Multiple fourth connectors 6 are provided between the second cluster frame 5 and the second battery pack 2 to fix the second cluster frame 5 and the second battery pack 2, ensuring the connection strength between the second cluster frame 5 and the second battery pack 2 while making the connection between the second cluster frame 5 and the second battery pack 2 detachable.
[0104] In summary, the first cluster frame 4 and the first battery pack 1 are connected by multiple first connectors 6, the first battery pack 1 and the intermediate battery pack 3 are connected by second connectors 6, the second battery pack 2 and the intermediate battery pack 3 are connected by third connectors 6, and the second cluster frame 5 and the second battery pack 2 are connected by fourth connectors 6. This ensures the structural strength of the battery cluster 100 while facilitating the inspection and replacement of the first cluster frame 4, the first battery pack 1, the intermediate battery pack 3, the second battery pack 2, and the second cluster frame 5.
[0105] Specifically, as shown in Figure 5, the first connector 6, the second connector 6, the third connector 6, and the fourth connector 6 may include, but are not limited to, welding bolts, rivet bolts, etc.
[0106] Furthermore, in some embodiments, the number of the first connector 6, the second connector 6, the third connector 6, and the fourth connector 6 is greater than or equal to eight.
[0107] Specifically, the more first connectors 6 there are, the stronger the connection between the first cluster frame 4 and the first battery pack 1. However, considering cost, the number of first connectors 6 can be greater than or equal to 8 to ensure the connection strength between the first cluster frame 4 and the first battery pack 1, thereby ensuring the structural strength of the battery cluster 100.
[0108] Similarly, the more second connectors 6 there are, the stronger the connection between the first battery pack 1 and the intermediate battery pack 3. However, considering cost, the number of second connectors 6 can be greater than or equal to 8 to ensure the connection strength between the first battery pack 1 and the intermediate battery pack 3, thereby ensuring the structural strength of the battery cluster 100.
[0109] Similarly, the more third connectors 6 there are, the stronger the connection between the second battery pack 2 and the intermediate battery pack 3. However, considering cost, the number of third connectors 6 can be greater than or equal to 8 to ensure the connection strength between the second battery pack 2 and the intermediate battery pack 3, thereby ensuring the structural strength of the battery cluster 100.
[0110] Similarly, the more fourth connectors 6 there are, the stronger the connection between the second cluster frame 5 and the second battery pack 2. However, considering cost, the number of fourth connectors 6 can be greater than or equal to 8 to ensure the connection strength between the second cluster frame 5 and the second battery pack 2, thereby ensuring the structural strength of the battery cluster 100.
[0111] In summary, when the number of the first connector 6, the second connector 6, the third connector 6, and the fourth connector 6 are all greater than or equal to 8, the structural strength of the battery cluster 100 can be guaranteed while reducing the production cost of the battery cluster 100.
[0112] Furthermore, in some embodiments, a lifting structure is provided on the side of the first cluster frame away from the first battery pack. The lifting structure is used for installing or removing the battery cluster.
[0113] Secondly, this application provides a method for assembling a battery cluster, used for assembling the battery cluster described in any of the above embodiments, the method comprising:
[0114] Step 1: Obtain the first battery pack, the intermediate battery pack, and the second battery pack.
[0115] Step 2: Stack the first battery pack, the intermediate battery pack, and the second battery pack sequentially along the first direction to obtain the first assembly component.
[0116] Step 3: Obtain the second cluster frame.
[0117] Step 4: Connect the second cluster frame to the second battery pack, so that the second cluster frame and the first assembly assembly form the second assembly assembly.
[0118] Step 5: Obtain the first cluster frame.
[0119] Step 6: Connect the first cluster frame to the first battery pack to form the battery cluster, so that the first battery pack, the intermediate battery pack and the second battery pack are fixedly connected between the first cluster frame and the second cluster frame.
[0120] In related technologies, each battery pack corresponds to a cluster holder, and the cluster holder has a drawer structure. During battery pack assembly, the battery pack needs to be pushed into the drawer, causing hard friction between the battery pack and the drawer, which can damage both the battery pack and the cluster holder. Furthermore, after the battery pack is pushed into the drawer, it is impossible to accurately determine the connection position between the battery pack and the cluster holder, thus increasing the assembly time of the battery holder and raising production costs.
[0121] Therefore, in the assembly method of this application, the first battery pack, the second battery pack, and the third battery pack are directly stacked and connected to the second cluster frame before being connected to the first cluster frame. This avoids damage to the battery packs and cluster frame due to hard friction, thereby ensuring the service life and safety of the battery clusters. Furthermore, the pre-assembly of the first, second, and third battery packs eliminates the problem of inaccurate positioning.
[0122] Thirdly, this application provides an electrical device, characterized in that it includes a battery cluster as described in any of the above embodiments. The battery pack in the battery cluster is used to provide electrical energy.
[0123] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.
[0124] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A battery cluster, characterized in that, include: First battery pack, second battery pack, first cluster frame, and second cluster frame; The first battery pack and the second battery pack are stacked along a first direction; Wherein, the first direction is the height direction of the battery cluster; The first cluster frame is connected to the first battery pack, and the first cluster frame is used to provide structural protection for the first battery pack and the second battery pack; The second cluster frame is connected to the second battery pack, and the second cluster frame is used to provide structural protection for the first battery pack and the second battery pack.
2. The battery cluster according to claim 1, characterized in that, The battery cluster includes one or more intermediate battery packs; The plurality of intermediate battery packs are stacked along the first direction, and the plurality of intermediate battery packs are all connected between the first battery pack and the second battery pack.
3. The battery cluster according to claim 2, characterized in that, The first battery pack is provided with a first frame and a second frame opposite to each other along the first direction; The second battery pack has a third frame and a fourth frame disposed opposite to each other along the first direction; The intermediate battery pack has two fifth borders arranged opposite each other along the first direction; The two fifth borders are respectively connected to the first border and the third border; The first cluster frame is connected to the second frame, and the second cluster frame is connected to the fourth frame, so that the first battery pack, the intermediate battery pack and the second battery pack are fixedly connected between the first cluster frame and the second cluster frame.
4. The battery cluster according to claim 3, characterized in that, A first exhaust channel is provided between the first battery pack and the intermediate battery pack; The first exhaust channel is disposed on the first frame and / or the fifth frame; A second exhaust channel is provided between the second battery pack and the intermediate battery pack; The second exhaust passage is disposed on the third frame and / or the fifth frame.
5. The battery cluster according to claim 4, characterized in that, Both the first exhaust channel and the second exhaust channel have a groove structure.
6. The battery cluster according to claim 3, characterized in that, The first border, the second border, the third border, the fourth border, and the fifth border each have a cavity to enhance the structural strength of the first border, the second border, the third border, the fourth border, and the fifth border.
7. The battery cluster according to claim 2, characterized in that, A plurality of first connectors are provided between the first cluster frame and the first battery pack for fixing the first cluster frame and the first battery pack together; A plurality of second connectors are provided between the first battery pack and the intermediate battery pack for fixing the first battery pack and the intermediate battery pack together. A plurality of third connectors are provided between the second battery pack and the intermediate battery pack for fixing the second battery pack and the intermediate battery pack together; A plurality of fourth connectors are provided between the second cluster frame and the second battery pack for fixing the second cluster frame and the second battery pack.
8. The battery cluster according to claim 7, characterized in that, The number of the first connector, the second connector, the third connector, and the fourth connector is greater than or equal to 8.
9. A method for assembling a battery cluster, used for assembling the battery cluster according to any one of claims 1-8, characterized in that, The method includes: Acquire the first battery pack, the intermediate battery pack, and the second battery pack; The first battery pack, the intermediate battery pack, and the second battery pack are stacked sequentially along a first direction to obtain a first assembly assembly. Obtain the second cluster frame; The second cluster frame is connected to the second battery pack, so that the second cluster frame and the first assembly assembly form a second assembly assembly; Obtain the first cluster frame; The first cluster frame is connected to the first battery pack to form the battery cluster, and the first battery pack, the intermediate battery pack and the second battery pack are fixedly connected between the first cluster frame and the second cluster frame.
10. An electrical device, characterized in that, Includes the battery cluster according to any one of claims 1-9; The battery pack in the battery cluster is used to provide electrical energy.