Battery device, energy storage system and electric device

Abstract

The application relates to the technical field of energy storage, in particular to a battery device, an energy storage system and a power utilization equipment. In the embodiment of the application, the battery management unit and the at least one battery monomer assembly are arranged along a first direction, and the end plate of the battery management unit and the at least one battery monomer assembly close to one end of the battery management unit are arranged on the first bearing part, that is, the same part is used to bear the corresponding end plate and the battery management unit, the number of bearing structures can be reduced, so that the size of the first bearing part along the first direction can be designed to be larger, the structural strength and the space utilization of the first bearing part are improved, assembly is facilitated, the integration of the structure is improved, the corresponding end plate, the battery management unit and the first bearing part are connected as a whole, and the structural strength of the whole structure is further improved. Therefore, the energy density of the device can be improved and assembly is facilitated under the premise of considering the structural reliability.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to battery devices, energy storage systems and electrical equipment. Background Technology

[0002] As energy storage and power devices face increasingly higher requirements for range, energy consumption, and overall performance, improving the energy density of these devices while ensuring structural reliability has become a pressing technical challenge for the industry. Summary of the Invention

[0003] Therefore, it is necessary to provide a battery device, energy storage system, and electrical equipment to improve the energy density of the device while taking into account structural reliability.

[0004] According to one aspect of this application, an embodiment provides a battery device including at least one battery cell assembly, a first support member, and a battery management unit. The battery cell assembly includes a plurality of battery cells disposed along at least one first direction, and two end plates located at both ends of the plurality of battery cells along the first direction. The first support member is an integral component. The battery management unit and the at least one battery cell assembly are arranged along the first direction, and the end plates of both the battery management unit and the at least one battery cell assembly near the end of the battery management unit are disposed on the first support member.

[0005] In some embodiments, the first support component includes a support body and a protrusion, the protrusion being disposed on the support side of the support body; an end plate disposed on the first support component is disposed on the first support component through the protrusion; and a battery management unit is disposed on the support side of the support body.

[0006] In some embodiments, the protrusion is located away from the side of the battery management unit along a first direction, defining a stepped portion with the bearing side of the bearing body; the stepped portion is used to bear a portion of the at least one battery cell assembly.

[0007] In some embodiments, the battery device further includes a mounting component, which includes a mounting body and a bending portion. The mounting body is connected to the bearing side of the first bearing component via the bending portion. The battery management unit is disposed on the mounting body.

[0008] In some embodiments, the first supporting member is provided with a first positioning hole, and the bent portion is provided with a second positioning hole; the battery device further includes a positioning member and a connecting member, the positioning member passing through the first positioning hole and the second positioning hole, and the positioning member being clearance-fitted into the first positioning hole and the second positioning hole respectively, and the connecting member connecting the first supporting member and the bent portion.

[0009] In some embodiments, the battery device further includes a housing, which includes a base and a cover, with the cover covering the base; a first support member and a battery cell assembly are both disposed on the base and located within the receiving space defined by the cover and the base; the cover has an opening through which the battery management unit is exposed to the housing.

[0010] In some embodiments, the battery device further includes a thermal management component; both the battery cell assembly and the first support component are disposed on the top side of the thermal management component.

[0011] In some embodiments, the battery device further includes a mounting component, and the battery management unit is disposed on the support side of the first support component via the mounting component; wherein the battery device further includes a first thermal conductive element disposed between the mounting component and the first support component; and / or, the battery device further includes a second thermal conductive element disposed between the mounting component and the battery management unit.

[0012] In some embodiments, the battery device further includes a third thermal conductive element disposed between the battery cell assembly and the thermal management component.

[0013] In some embodiments, a battery cell includes a battery cell body and a pressure relief mechanism disposed on the bottom side of the battery cell body; the battery device further includes a second support member connected to a first support member, the second support member being used to support a portion of the at least one battery cell assembly, the second support member having an exhaust channel corresponding to the pressure relief mechanism, and the first support member having a venting channel communicating with the exhaust channel.

[0014] In some embodiments, the second support member includes at least one first support member arranged along a second direction and at least one second support member arranged along a first direction; the direction from the top side of the battery cell body to the bottom side of the battery cell body, the first direction, and the second direction intersect each other; the first support member extends longitudinally along the first direction, and the second support member extends longitudinally along the second direction, and the at least one first support member is connected to the at least one second support member; the exhaust channel includes a first sub-channel defined by the first support member and a second sub-channel defined by the second support member; the first sub-channel and the second sub-channel are connected.

[0015] In some embodiments, there are multiple second carriers arranged along a first direction, and the first sub-channels of two adjacent second carriers along the first direction are connected; there are multiple battery cell assemblies arranged at least along the first direction, and two adjacent battery cell assemblies along the first direction are disposed on different second carriers; end plates other than those disposed on the end plates of the first carriers are disposed on the corresponding second carriers.

[0016] In some embodiments, the battery device further includes a connecting component having a connecting channel; along a first direction, two adjacent second carriers carrying different battery cell assemblies are connected by the connecting component, and the second sub-channels of the two adjacent second carriers are connected by the connecting channel.

[0017] In some embodiments, the battery device further includes a fourth thermal conductive element, a first support member and a second support member defining a gap, the fourth thermal conductive element being disposed within the gap and supporting a portion of the at least one battery cell assembly.

[0018] In some embodiments, the first carrier component has a receiving cavity; the battery device further includes a wiring harness assembly, a portion of which is received within the receiving cavity.

[0019] According to another aspect of this application, embodiments of this application provide an energy storage system including the battery device in any of the above embodiments.

[0020] According to another aspect of this application, an embodiment of this application provides an electrical device including the battery device in any of the above embodiments.

[0021] In the aforementioned battery device, energy storage system, and electrical equipment, the battery device includes at least one battery cell assembly, a battery management unit, and a first supporting component. Since the battery management unit and the at least one battery cell assembly are arranged along a first direction, and the end plates of both the battery management unit and the at least one battery cell assembly near the battery management unit are located on the first supporting component, and the first supporting component is a single integral component—that is, using the same component to support the corresponding end plate and battery management unit—the number of supporting structures can be reduced. This not only allows for a larger design of the first supporting component along the first direction, improving its structural strength and space utilization, but also facilitates assembly, increasing the structural integration. Furthermore, it allows the corresponding end plate, battery management unit, and first supporting component to be connected as a whole, further enhancing the overall structural strength. Therefore, while ensuring structural reliability, the energy density of the device can be increased, and assembly can be facilitated.

[0022] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 This is a three-dimensional structural diagram of a battery device in one embodiment of this application;

[0025] Figure 2 This is a partially exploded structural diagram of a battery device in some embodiments of this application from one view.

[0026] Figure 3 This is a three-dimensional structural diagram of a portion of the battery device in some embodiments of this application;

[0027] Figure 4 This is a three-dimensional structural diagram of the battery management unit, end plate, and first support component cooperating in some embodiments of this application;

[0028] Figure 5 This is a three-dimensional structural diagram of the first load-bearing component in some embodiments of this application;

[0029] Figure 6 for Figure 3 A magnified schematic diagram of the local structure at point G1;

[0030] Figure 7 This is a three-dimensional structural diagram of the electrical panel assembly and the first mounting component cooperating in some embodiments of this application;

[0031] Figure 8 This is a three-dimensional structural diagram showing the cooperation between the access panel assembly and the second mounting component in some embodiments of this application;

[0032] Figure 9 This is a three-dimensional structural diagram of the battery management unit and the first supporting component cooperating in some embodiments of this application;

[0033] Figure 10 This is a three-dimensional structural diagram of the cooperation between the second mounting component, the end plate, and the first bearing component in some embodiments of this application;

[0034] Figure 11 This is a side view of the structure in which the second mounting component, end plate, and first bearing component cooperate in some embodiments of this application;

[0035] Figure 12 This is a partially exploded structural diagram of the battery device in some embodiments of this application from one view.

[0036] Figure 13 This is a three-dimensional structural diagram of another part of the battery device in some embodiments of this application;

[0037] Figure 14 for Figure 13 A schematic cross-sectional view of the structure is shown.

[0038] Figure 15 for Figure 14 A magnified schematic diagram of the local structure at point G2;

[0039] Figure 16 This is a schematic diagram of the structure of the first and second load-bearing components cooperating in some other embodiments of this application;

[0040] Figure 17 This is a three-dimensional structural diagram of a portion of the battery device in some other embodiments of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] Battery device 100;

[0043] Battery cell modules 110, 110a, battery cells 111, 111a, battery cell bodies 1111, 1111a, pressure relief mechanism 1112, 1112a, end plate 112;

[0044] Battery management unit 120, electrical panel assembly 121, maintenance panel assembly 122;

[0045] First supporting component 130, supporting body 131, protrusion 132, stepped part 1301, first positioning hole k1, air guide channel D, inlet D1, outlet D2;

[0046] Mounting component 140, first mounting component A1, second mounting component A2, mounting body 141, first part 1411, second part 1412, third part 1413, fourth part 1414, fifth part 1415, bending part 142, second positioning hole k2;

[0047] Positioning component 151, connecting component 152;

[0048] Box 160, base 161, cover 162, clearance opening bk, cover 163, pressure relief component X;

[0049] Thermal management component 170;

[0050] First heat-conducting component 181, second heat-conducting component 182, third heat-conducting component 183, fourth heat-conducting component 184;

[0051] Second support components 190, 190a, exhaust channels P, Pa, first support components 191, 191a, first sub-channels P1, P1a, second support components 192, 192a, second sub-channels P2, P2a;

[0052] Connecting component L, connecting channel LP;

[0053] First direction F1, second direction F2, third direction F3. Detailed Implementation

[0054] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0055] In the description of this application, it should be understood that if 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", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0060] According to some embodiments of this application, please refer to Figures 1 to 3 , Figure 1 This is a three-dimensional structural diagram of the battery device 100 in one embodiment of this application. Figure 2 This is a partially exploded view of the battery device 100 in some embodiments of this application from one perspective. Figure 3 This is a three-dimensional structural diagram of a portion of the structure of a battery device 100 in some embodiments of this application. The embodiments of this application provide a battery device 100, including at least one battery cell assembly 110, a battery management unit 120, and a first support component 130.

[0061] The battery cell assembly 110 includes a plurality of battery cells 111 disposed at least along a first direction F1, and end plates 112 located at both ends of the plurality of battery cells 111 along the first direction F1.

[0062] A battery cell assembly 110 refers to a combined unit formed by arranging multiple battery cells 111 in a predetermined direction and constraining and fixing them through structural components such as end plates 112. The battery cell assembly 110 serves as a fundamental component of the battery device 100, used to realize the storage and output of electrical energy. A battery cell 111 is the smallest electrochemical unit capable of independently storing and releasing electrical energy. End plates 112 are structural components used to constrain, fix, and limit the position of the battery cells 111, and are located at both ends of the battery cell assembly 110. It is understood that the end plates 112 do not restrict the shape of the structures located at both ends of the battery cell assembly 110, but are only used to indicate the two ends of the battery cell assembly 110. That is, end plates 112 are provided at one end of the multiple battery cells 111 along the first direction F1 and at the other end along the first direction F1. Exemplarily, the battery cell assembly 110 also includes auxiliary structures such as steel strips that cooperate with the end plates 112 to constrain, fix, and limit the position of the battery cells 111; specific limitations are not specified here.

[0063] The battery cell assembly 110 includes a plurality of battery cells 111 disposed at least along a first direction F1, that is, the aforementioned disposed direction at least includes the first direction F1. Figure 3 For example, the directions are set as follows: first direction F1 and second direction F2. In Figure 3 The diagram illustrates two battery cell assemblies 110. It should be noted that in this embodiment, the first direction F1 can be considered as the length direction of the battery device 100, the second direction F2 as the width direction of the battery device 100, and the third direction F3 as the height direction of the battery device 100. The first direction F1, the second direction F2, and the third direction F3 intersect each other. For example, the first direction F1, the second direction F2, and the third direction F3 are perpendicular to each other. The length of the battery device 100 can be greater than or equal to its width, and no specific limitation is made here.

[0064] The battery management unit 120 and the at least one battery cell assembly 110 are arranged along the first direction F1, and the end plates 112 of the battery management unit 120 and the at least one battery cell assembly 110 near the end of the battery management unit 120 are both located on the first support member 130.

[0065] The Battery Management Unit (BMU) 120 is a functional unit used for signal acquisition, status monitoring, equalization control, and safety protection of the battery, enabling intelligent management of the battery system. Exemplarily, the Battery Management Unit 120 includes two parts, for example, referring to... Figure 2 and Figure 3 and in conjunction with reference Figure 4 , Figure 4This is a three-dimensional structural diagram of the battery management unit 120, end plate 112, and first support component 130 in some embodiments of this application. One part is the electrical panel assembly 121, and the other part is the maintenance panel assembly 122. The electrical panel assembly 121 is a component that integrates electrical components and realizes circuit connection and electrical function, used to realize electrical control and signal transmission of the battery management unit 120. The maintenance panel assembly 122 is a structural component used for maintenance, repair, and disassembly / removal operations of the battery device 100, used to realize protection and maintainability of the battery management unit 120. The division of the components within the battery management unit 120, and the components included in the electrical panel assembly 121 and the maintenance panel assembly 122, can be divided according to actual conditions, and are not specifically limited here.

[0066] "The end of the at least one battery cell assembly 110 near the battery management unit 120" refers to the end of the structure formed by all the battery cell assemblies 110 near the battery management unit 120, that is, the end of the structure formed by all the battery cell assemblies 110 near the battery management unit 120 along the first direction F1. "The end plate 112 of the end of the at least one battery cell assembly 110 near the battery management unit 120" refers to the end plate 112 of the aforementioned structure near the battery management unit 120 along the first direction F1. Such an end plate 112 is provided on the first supporting member 130. For example, when there is only one battery cell assembly 110, the end plate 112 is the end plate 112 of the battery cell assembly 110 near the battery management unit 120. For example, when two battery cell assemblies 110 are provided, the two battery cell assemblies 110 are arranged along the first direction F1, and the end plate 112 of the structure formed by the two battery cell assemblies 110 at the end near the battery management unit 120 along the first direction F1 is an end plate 112 provided on the first support member 130. As another example, when two battery cell assemblies 110 are provided, the two battery cell assemblies 110 are arranged along the second direction F2, and the end plate 112 at the same end of the two battery cell assemblies 110 along the first direction F1 is an end plate 112 provided on the first support member 130.

[0067] Exemplarily, in this embodiment of the application, four battery cell assemblies 110 are provided, arranged along a first direction F1 and a second direction F2. Each battery cell assembly 110 includes battery cells 111 arranged along the first direction F1 and the second direction F2. In this case, the end plates 112 of the two battery cell assemblies 110 arranged along the second direction F2 near the battery management unit 120 are end plates 112 mounted on the first supporting member 130. For ease of illustration of other structures of the battery device 100, ... Figure 3 For example, two battery cell modules 110 are shown. Figure 4 For example, only one end plate 112 is shown on the first supporting component 130. No specific limitations are made here.

[0068] The first supporting component 130 is an integral component. It should be noted that, in the embodiments of this application, "integral component" refers to a component that can be used independently or, after disassembly, can be used as an independent functional unit. The parts constituting this integral component cannot be arbitrarily divided under normal conditions. Disassembly means separating the first supporting component 130 from the base 161 shown below; the connection method between the first supporting component 130 and the base 161 shown below is not limited.

[0069] The first load-bearing component 130 refers to a load-bearing structure used to support and mount the battery management unit 120 and the corresponding end plate 112. Exemplarily, in conjunction with reference to... Figure 4 and in conjunction with reference Figure 5 , Figure 5 This is a three-dimensional structural diagram of the first load-bearing component 130 in some embodiments of this application. The first load-bearing component 130 may be a beam structure. That is, the first load-bearing component 130 is a longitudinal member extending along the second direction F2. The material of the first load-bearing component 130 includes, but is not limited to, aluminum alloy, steel, or composite materials. The first load-bearing component 191 may be manufactured by processes such as extrusion molding, stamping molding, or casting to meet the requirements of structural strength, lightweight, and ease of processing.

[0070] It should be noted that "the first load-bearing component 130 extends along the second direction F2" means describing the static structural arrangement of the first load-bearing component 130, rather than a dynamic description of the first load-bearing component 130. The same understanding applies to any subsequent descriptions involving extension.

[0071] Thus, since the battery management unit 120 and the at least one battery cell assembly 110 are arranged along the first direction F1, and the end plates 112 of the battery management unit 120 and the at least one battery cell assembly 110 near the end of the battery management unit 120 are both located on the first supporting component 130, and the first supporting component 130 is a single component, that is, the same component is used to support the corresponding end plate 112 and the battery management unit 120, which can reduce the number of supporting structures. This not only allows the first supporting component 130 to be designed to be larger along the first direction F1, which is beneficial to improving the structural strength and space utilization of the first supporting component 130, but also facilitates assembly and improves the integration of the structure. Furthermore, the corresponding end plate 112, battery management unit 120 and first supporting component 130 can be connected as a whole, which is beneficial to further improve the structural strength of the overall structure. Therefore, the energy density of the device can be increased and assembly can be facilitated while taking into account structural reliability.

[0072] Based on some embodiments of this application, please continue to refer to Figure 4 and Figure 5 The first supporting component 130 includes a supporting body 131 and a protrusion 132, with the protrusion 132 disposed on the supporting side of the supporting body 131. An end plate 112 disposed on the first supporting component 130 is supported by the protrusion 132. The battery management unit 120 is disposed on the supporting side of the supporting body 131.

[0073] The supporting body 131 is the main structure of the first supporting component 130, used to provide structural strength and serve as the foundation for bearing, installation, and support. The protrusion 132 is a structure that protrudes relative to the supporting body 131 and is used to support the end plate 112. The bearing side refers to the side surface of the supporting body 131 used to bear, install, or arrange related components, providing an interface for the installation and support of the components.

[0074] Thus, by configuring the first supporting component 130 to include a supporting body 131 and a protrusion 132, and mounting the corresponding end plate 112 on the protrusion 132, with the battery management unit 120 mounted on the supporting side of the supporting body 131, it not only facilitates the partitioned arrangement of the end plate 112 and the battery management unit 120, but also reduces the contact area between the end plate 112 and the supporting body 131, reducing vibration transmission and improving structural reliability. Simultaneously, the protrusion 132 facilitates assembly positioning, simplifies assembly processes, and improves assembly efficiency and structural stability.

[0075] Of course, in some other embodiments, the end plate 112 and the battery management unit 120 can be installed on the bearing side of the bearing body 131 or the bearing side of the first bearing component 130, and no specific limitation is made here.

[0076] Based on some embodiments of this application, please continue to refer to Figure 4 and Figure 5 and in conjunction with reference Figure 6 , Figure 6 for Figure 3 The enlarged structural diagram at point G1 shows that the protrusion 132 is located on the side opposite to the battery management unit 120 along the first direction F1, defining a stepped portion 1301 with the support side of the support body 131. The stepped portion 1301 is used to support the at least one battery cell assembly 110. That is, the protrusion 132 protrudes from the support side of the support body 131, and the two together form a stepped structure.

[0077] Thus, by defining the stepped portion 1301, a positioning structure can be formed, which facilitates the assembly and positioning of the battery cell assembly 110 and helps to improve assembly accuracy and efficiency.

[0078] Based on some embodiments of this application, please continue to refer to Figures 2 to 4The battery device 100 also includes a mounting component 140, which includes a mounting body 141 and a bending portion 142. The mounting body 141 is connected to the bearing side of the first bearing component 130 via the bending portion 142. The battery management unit 120 is disposed on the mounting body 141.

[0079] Mounting body 141 is the main structure for mounting, fixing, and supporting battery management unit 120. Bending portion 142 is a connecting structure bent relative to mounting body 141, used to connect and position mounting body 141 and first supporting component 130. Because bending portion 142 is bent relative to mounting body 141, its own elastic deformation or structural clearance can provide a certain range of movement for mounting body 141, enabling mounting body 141 to have a floating assembly capability relative to the first supporting component 130.

[0080] For example, in conjunction with reference Figures 7 to 9 , Figure 7 This is a perspective structural diagram showing the cooperation between the electrical panel assembly 121 and the first mounting component A1 in some embodiments of this application. Figure 8 This is a perspective structural diagram showing the cooperation between the access panel assembly 122 and the second mounting component A2 in some embodiments of this application. Figure 9 This is a three-dimensional structural diagram showing the cooperation between the battery management unit 120 and the first support member 130 in some embodiments of this application. The mounting member 140 for mounting the electrical panel assembly 121 is the first mounting member A1, and the mounting member 140 for mounting the maintenance panel assembly 122 is the second mounting member A2. The bent portions 142 of the first mounting member A1 and the bent portions 142 of the second mounting member A2 are both mounted on the support side of the support body 131. The first mounting member A1 and the second mounting member A2 are spaced apart along the second direction F2.

[0081] For example, the mounting component 140 may be a sheet metal part. Both the mounting body 141 and the bend 142 may be constructed as plate-like structures. In this way, the mounting component 140 may be generally L-shaped.

[0082] Thus, by configuring the mounting component 140 to include the mounting body 141 and the bending portion 142, a more reliable connection can be achieved through the bending portion 142, improving connection strength and structural stability. This also compensates for assembly errors, reduces assembly constraints, lowers assembly precision requirements, and improves assembly yield. Furthermore, under conditions of vibration, impact, or thermal expansion and contraction, the bending portion 142 can absorb stress and reduce stress concentration caused by hard contact between structures, thereby improving the reliability and service life of the structure.

[0083] Based on some embodiments of this application, please continue to refer to Figure 4 , Figure 5 , Figures 7 to 9 The first supporting component 130 is provided with a first positioning hole k1, and the bent portion 142 is provided with a second positioning hole k2. The battery device 100 also includes a positioning member 151 and a connecting member 152. The positioning member 151 passes through the first positioning hole k1 and the second positioning hole k2, and the positioning member 151 is respectively clearance-fitted into the first positioning hole k1 and the second positioning hole k2. The connecting member 152 connects the first supporting component 130 and the bent portion 142.

[0084] Positioning component 151 is a component that serves to position, limit, and guide. The first positioning hole k1 and the second positioning hole k2 are both hole structures used to mate with positioning component 151.

[0085] Positioning elements 151 are inserted into the first positioning hole k1 and the second positioning hole k2, meaning that one positioning element 151 is inserted into both positioning holes (one first positioning hole k1 and one second positioning hole k2). This allows the first supporting member 130 and the bent portion 142 to be positioned. For example, the number of positioning elements 151 can be less than or equal to the number of first positioning holes k1, and the number of positioning elements 151 can be less than or equal to the number of second positioning holes k2. The number of first positioning holes k1 and the number of second positioning holes k2 are equal, and the positions of the first positioning holes k1 and the second positioning holes k2 are set in a one-to-one correspondence. It can be understood that when the number of positioning elements 151, the number of first positioning holes k1, and the number of second positioning holes k2 are equal, each positioning element 151 corresponds to one first positioning hole k1 and one second positioning hole k2, and the positioning elements 151, the first positioning holes k1, and the second positioning holes k2 are in a one-to-one correspondence. When the number of positioning parts 151 is less than the number of first positioning holes k1 and the number of positioning parts 151 is less than the number of second positioning holes k2, there is greater flexibility in the placement of the positioning parts 151, which also helps to control the assembly adjustment allowance more flexibly.

[0086] The positioning element 151 is clearance-fitted into the first positioning hole k1 and the second positioning hole k2, respectively. That is, the outer diameter of the positioning element 151 is slightly smaller than the inner diameter of both the first and second positioning holes k1 and k2. There are minute gaps between the positioning element 151 and the walls of both the first and second positioning holes k1 and k2. "Slightly smaller" can be understood as the outer diameter of the positioning element 151 being close to the inner diameter of the corresponding positioning hole, allowing the positioning element 151 to fit without wobbling. "Minor gaps" can be understood as fitting clearances, assembly clearances, or positioning clearances. This not only achieves positioning but also provides adjustment allowance for assembly.

[0087] For example, the difference between the inner diameter of the first positioning hole k1 and the outer diameter of the positioning member 151 can be from 0.1 mm to 0.5 mm. For instance, the difference between the inner diameter of the first positioning hole k1 and the outer diameter of the positioning member 151 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm. The difference between the inner diameter of the first positioning hole k1 and the outer diameter of the positioning member 151 can be any other value within the range of 0.1 mm to 0.5 mm, and is not specifically limited here. Of course, the difference between the inner diameter of the first positioning hole k1 and the outer diameter of the positioning member 151 can also be other values ​​such as 0.08 mm, 0.6 mm, or 1 mm, and is not specifically limited here.

[0088] For example, the positioning element 151 can be a positioning pin, positioning post, or other structure, without specific limitations.

[0089] For example, the connector 152 can be a bolt, screw, snap-fit, pin, or other component, without any specific limitation.

[0090] For example, the first positioning hole k1 is provided on the bearing side of the bearing body 131 of the first bearing member 130.

[0091] It should be noted that, in Figure 9 The diagram illustrates a case where the bent portion 142 of the first mounting component A1 has a second positioning hole k2. The bent portion 142 of the second mounting component A2 also has a second positioning hole k2, but this is not specifically limited here.

[0092] Since the positioning element 151 is clearance-fitted into the first positioning hole k1 and the second positioning hole k2 respectively, pre-positioning can be achieved first by the positioning element 151 engaging with the first positioning hole k1 on the first bearing component 130, and then the first bearing component 130 and the bent portion 142 can be fixed by the connecting element 152. In this structure, the first bearing component 130 and the mounting component 140 have a certain assembly adjustment margin during assembly, thus facilitating assembly. Simultaneously, with this assembly adjustment margin, under conditions of vibration, impact, and thermal expansion and contraction, structural displacement and stress can be absorbed, reducing the risk of stress concentration and improving structural reliability and service life. It can be understood that even if the connecting element 152 fails, the presence of the positioning element 151, with its clearance fit with the corresponding positioning hole, can buffer stress and release it through the gap, thereby protecting the battery management unit 120 installed on the mounting component 140.

[0093] Based on some embodiments of this application, please continue to refer to Figure 9 The bent portion 142 has two opposing edge portions. The direction in which one edge portion points to the other edge portion, the opening direction of the first positioning hole k1, and the first direction F1 intersect each other.

[0094] For example, the direction in which one edge points to the other edge is parallel to the second direction F2, and the opening direction of the first positioning hole k1 and the opening direction of the second positioning hole k2 are both parallel to the third direction F3. The direction in which one edge points to the other edge, the opening direction of the first positioning hole k1, and the first direction F1 are perpendicular.

[0095] The connector 152 passes through one edge of the bend 142, and the positioning member 151 passes through the other edge of the bend 142 of the second mounting member A2.

[0096] For example, with Figure 9 For example, for the second mounting component A2, the connector 152 passes through one edge of the bent portion 142 of the second mounting component A2, and the positioning component 151 passes through the other edge of the bent portion 142 of the second mounting component A2.

[0097] For example, the number of connectors 152 provided at one of the edges can be one, two, three, or other numbers, and the number of positioning members 151 provided at the other edge can be one, two, three, or other numbers. The number of connectors 152 provided at one edge and the number of positioning members 151 provided at the other edge can be equal or unequal. No specific limitation is made here. For example, Figure 9 The illustration shows a configuration where two connectors 152 are provided at one edge of the bent portion 142 of the second mounting component A2, and two positioning members 151 are provided at the other edge of the bent portion 142 of the second mounting component A2.

[0098] It should be noted that, in Figure 9 In the illustrated configuration, two connectors 152 are provided at each of the two edges of the bent portion 142 of the first mounting component A1. It can be understood that the first mounting component A1 can also be... Figure 9 The installation method of the second mounting component A2 shown in the diagram is not specifically limited here.

[0099] Thus, by arranging positioning members 151 and connecting members 152 at opposite ends of the bending portion 142, a structure with positioning constraint at one end and fixed constraint at the other end can be formed, creating a long lever arm floating structure. This not only restricts unnecessary movement while providing a certain degree of floating freedom, but also makes the overall floating adjustment more uniform, improving installation reliability and structural stability.

[0100] Based on some embodiments of this application, please continue to refer to Figure 4 , Figure 8 and Figure 9 and in conjunction with reference Figure 10 and Figure 11 , Figure 10 This is a three-dimensional structural diagram showing the cooperation between the second mounting component A2, the end plate 112, and the first supporting component 130 in some embodiments of this application. Figure 11 This is a side view of the structure of the second mounting component A2, end plate 112, and first bearing component 130 in some embodiments of this application. The mounting body 141 includes a first part 1411, a second part 1412, a third part 1413, a fourth part 1414, and a fifth part 1415. One end of the first part 1411 is connected to the bent part 142, and the other end of the first part 1411 is connected to one end of the second part 1412. The other end of the second part 1412 is connected to one end of the third part 1413. The fourth part 1414 is located at the other end of the first part 1411 and is bent relative to the first part 1411. The fifth part 1415 is located at one end of the second part 1412 and is bent relative to the second part 1412. The fourth part 1414 and the fifth part 1415 are connected. That is, the first part 1411 and the second part 1412 are connected through the fourth part 1414 and the fifth part 1415. At least a portion of the battery management unit 120 is mounted in the second part 1412 and the third part 1413.

[0101] For example, the mounting body 141 of the second mounting component A2 adopts the above-described structure. A portion of the access panel assembly 122 is mounted on the second part 1412, and another portion is mounted on the third part 1413.

[0102] For example, the second part 1412 and the third part 1413 are connected by fasteners. The fourth part 1414 and the fifth part 1415 are connected by fasteners.

[0103] For example, the bent portion 142, the first portion 1411 and the fourth portion 1414 are integrally formed, and the second portion 1412 and the fifth portion 1415 are integrally formed.

[0104] Thus, by configuring the mounting body 141 into a structure comprising a first part 1411, a second part 1412, a third part 1413, a fourth part 1414, and a fifth part 1415, the relatively bent fourth part 1414 and fifth part 1415 can be used to disperse stress, absorb vibration and impact, and improve the reliability of the structure. Furthermore, in conjunction with the situations illustrated in some of the foregoing embodiments, it also helps to provide assembly allowance and facilitate assembly.

[0105] Based on some embodiments of this application, please continue to refer to Figure 4 , Figures 7 to 9 The second positioning hole k2 on the bent portion 142 of the first mounting component A1 and the second positioning hole k2 on the bent portion 142 of the second mounting component A2 are spaced apart along the first direction F1.

[0106] This results in differences in the deformable directions of the different bends 142, allowing the deformation trends of the two mounting components 140 to mutually restrict and support each other when subjected to force. This creates an interlocking and more robust connection structure while maintaining a certain degree of deformation capacity, thereby further improving the overall reliability of the structure.

[0107] Based on some embodiments of this application, please continue to refer to Figure 4 , Figures 7 to 9 The fitting clearance between the second positioning hole k2 on the bent portion 142 of the first mounting component A1 and the corresponding positioning member 151 is the first clearance. The fitting clearance between the second positioning hole k2 on the bent portion 142 of the second mounting component A2 and the corresponding positioning member 151 is the second clearance. The first clearance and the second clearance are different.

[0108] Thus, since the floating gaps of different bends 142 are different, the deformation tendencies of the two mounting components 140 under stress can be mutually constrained and mutually supported. While having a certain deformation capacity, they form an interlocking and more secure connection structure, thereby further improving the reliability of the overall structure.

[0109] It should be noted that when the second positioning holes k2 on the bends 142 are arranged at different intervals along the first direction F1, and the different second positioning holes k2 have different floating gaps, stress can be dispersed and the structure's vibration and impact resistance can be improved. Furthermore, the difference in deformation direction and floating gap also enables the overall structure to have adaptive adjustment capabilities in multiple dimensions, which can both compensate for manufacturing and assembly errors and improve the connection reliability of the structure.

[0110] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 The battery assembly 100 also includes a housing 160, which includes a base 161 and a cover 162, with the cover 162 covering the base 161. The first support member 130 and the battery cell assembly 110 are both disposed on the base 161 and located within the accommodating space defined by the cover 162 and the base 161. The cover 162 has a clearance opening bk through which the battery management unit 120 is exposed to the housing 160.

[0111] This not only facilitates inspection, debugging, wiring, and maintenance without requiring the complete disassembly of the cover 162, simplifying maintenance operations and improving maintenance efficiency, but also enhances heat dissipation through exposed arrangement.

[0112] It should be noted that, since the battery management unit 120 is floatingly mounted on the first supporting component 130, when installing the cover 162, it can be moved towards the outside of the battery management unit 120 along the first direction F1. After the cover 162 can cover the front of the battery management unit 120, the cover 162 is then moved downward along the third direction F3, and the cover 162 and the base 161 are locked together using fasteners. This process not only facilitates the assembly of the cover 162, but also provides assembly or manufacturing allowances for the cover 162, the base 161, and the battery management unit 120.

[0113] Based on some embodiments of this application, please continue to refer to Figures 1 to 3 The enclosure 160 also includes a cover 163, which covers the clearance opening bk of the exposed access panel assembly 122.

[0114] For example, the cover 163 is detachably connected to the cover 162.

[0115] Thus, by providing the cover 163, the internal components of the access panel assembly 122 and the housing 160 can be protected.

[0116] Based on some embodiments of this application, please continue to refer to Figure 2 and Figure 3 The battery device 100 also includes a thermal management component 170. The battery cell assembly 110 and the first support component 130 are both located on the top side of the thermal management component 170.

[0117] Thermal management component 170 refers to a component used for heat regulation, heat dissipation, or heating of the battery device 100, which helps the battery operate within a suitable temperature range. Exemplarily, thermal management component 170 includes, but is not limited to, components such as thermal pads, liquid cooling plates, and heating plates, etc., without specific limitations herein.

[0118] The top side of the thermal management component 170 refers to the side of the thermal management component 170 facing the receiving space defined by the cover 162 and the base 161. It can be understood that, in the installed position, the top side of the thermal management component 170 is positioned facing the battery cell assembly 110. Figure 2 and Figure 3 From the view shown, the thermal management component 170 is located on the bottom side of the battery cell assembly 110, and the top side of the thermal management component 170 is the upper side of the thermal management component 170.

[0119] Thus, by placing the battery cell assembly 110 and the first support member 130 on the top side of the thermal management member 170, the thermal management member 170 can perform thermal management on the battery cell assembly 110 and the first support member 130. Since the first support member 130 is widened along the first direction F1, the contact surface between the first support member 130 and the thermal management member 170 is increased, which is beneficial to improving the thermal management effect of the first support member 130, and consequently, improving the thermal management effect of the battery management unit 120 and the end plate 112 mounted on the first support member 130. Therefore, the overall thermal management effect can be improved.

[0120] It should be noted that at least a portion of the base 161 of the housing 160 may be composed of a thermal management component 170, and the base 161 may also include a supporting structure such as a base plate. Of course, in some other embodiments, the thermal management component 170 may be disposed on the side of the base facing the receiving space, that is, the thermal management component 170 may be disposed on the top side of the base 161. No specific limitations are made here.

[0121] Based on some embodiments of this application, please continue to refer to Figure 2 , Figure 4 , Figure 8 and Figure 9 The battery device 100 further includes a first heat-conducting element 181, which is disposed between the mounting component 140 and the first support component 130. And / or, the battery device 100 further includes a second heat-conducting element 182, which is disposed between the mounting component 140 and the battery management unit 120.

[0122] For example, at one end of the mounting component 140 connected to the first support component 130, a first heat-conducting element 181 is provided between the mounting component 140 and the first support component 130.

[0123] For example, a second heat-conducting element 182 is provided between the end of the mounting component 140 connected to the battery management unit 120 and the battery management unit 120.

[0124] For example, the first heat-conducting component 181 may be a heat-conducting pad, heat-conducting adhesive, heat-conducting silicone sheet, heat-conducting copper sheet, heat-conducting aluminum sheet, etc., and no specific limitation is made here.

[0125] For example, the second heat-conducting component 182 may be a heat-conducting pad, heat-conducting adhesive, heat-conducting silicone sheet, heat-conducting copper sheet, heat-conducting aluminum sheet, etc., and no specific limitation is made here.

[0126] For example, with Figure 8 and Figure 9 For example, a gap is defined between the second part 1412 and the third part 1413 to accommodate the second heat-conducting element 182.

[0127] For example, the formed thermal management path can be: thermal management component 170 → first support component 130 → first heat conduction component 181 → mounting component 140 → second heat conduction component 182 → battery management unit 120.

[0128] Therefore, by providing the first heat-conducting element 181 and / or the second heat-conducting element 182, the thermal management effect of the battery management unit 120 can be further improved.

[0129] Based on some embodiments of this application, please continue to refer to Figure 2 and Figure 3 The battery device 100 also includes a third heat-conducting element 183, which is disposed between the battery cell assembly 110 and the thermal management component 170.

[0130] For example, the third heat-conducting component 183 may be a heat-conducting pad, heat-conducting adhesive, heat-conducting silicone sheet, heat-conducting copper sheet, heat-conducting aluminum sheet, etc., without specific limitations.

[0131] For example, the formed thermal management path can be: thermal management component 170 → third heat-conducting component 183 → battery cell 111 of battery cell assembly 110. Of course, the formed thermal management path also includes: thermal management component 170 → first support component 130 → end plate 112 of battery cell assembly 110.

[0132] Thus, by setting the third heat-conducting component 183, the thermal management effect of the battery cell assembly 110 can be improved.

[0133] Based on some embodiments of this application, please continue to refer to Figure 2 , Figure 3 , Figure 5 and Figure 9 and in conjunction with reference Figure 12 and Figure 13 , Figure 12 This is a partially exploded view of the battery device 100 in some embodiments of this application from one perspective. Figure 13 This is a perspective structural diagram of another part of the battery device 100 in some embodiments of this application. The battery cell 111 includes a battery cell body 1111 and a pressure relief mechanism 1112 disposed on the bottom side of the battery cell body 1111. The battery device 100 also includes a second support member 190 connected to the first support member 130. The second support member 190 is used to support a portion of the at least one battery cell assembly 110. The second support member 190 has an exhaust channel P corresponding to the pressure relief mechanism 1112. The first support member 130 has a venting channel D communicating with the exhaust channel P.

[0134] The pressure relief mechanism 1112 refers to a mechanism used to release internal pressure and reduce the risk of battery explosion or rupture when the internal pressure of the battery cell 111 rises abnormally. Exemplarily, the pressure relief mechanism 1112 includes, but is not limited to, structures such as explosion-proof valves, explosion-proof membranes, pressure relief valves, weak points, and pressure relief ports, etc., without specific limitations.

[0135] The second supporting component 190 is provided with an exhaust channel P corresponding to the position of the pressure relief mechanism 1112. This channel is used to smoothly export and directionally guide the high-pressure gas discharged from the battery cell 111 when the pressure relief mechanism 1112 is opened, reducing the risk of gas accumulation inside. The first supporting component 130 is provided with a gas guide channel D, which is interconnected with the exhaust channel P of the second supporting component 190 to form a continuous and directional gas flow path, allowing the gas discharged from the pressure relief mechanism 1112 to be smoothly discharged outward through the exhaust channel P and the gas guide channel D in sequence.

[0136] For example, in conjunction with reference Figures 1 to 3 , Figure 9 and Figure 13 The inlet D1 of the air guide channel D is connected to the exhaust channel P, and the outlet D2 of the air guide channel D is connected to the "accommodation space defined by the cover 162 and the base 161". The cover 162 is provided with a pressure relief component X.

[0137] For example, the pressure relief path can be: pressure relief mechanism 1112 → exhaust channel P → air guide channel D → pressure relief component X.

[0138] Thus, by placing the pressure relief mechanism 1112 on the bottom side of the battery cell 111, and using the second supporting member 190 to form the exhaust channel P and the first supporting member 130 to form the air guiding channel D, a pressure relief path can be formed, achieving orderly exhaust and directional airflow, reducing the risk of gas scouring or damaging electrical components, thereby improving structural reliability and safety. Since the first supporting member 130 and the second supporting member 190 are used to form the corresponding pressure relief path, the gas flow path can be optimized, exhaust resistance reduced, and pressure relief response speed and efficiency improved. Simultaneously, because the first supporting member 130 is widened along the first direction F1, the space of the air guiding channel D formed by the first supporting member 130 can be larger, which is also more conducive to pressure relief.

[0139] Based on some embodiments of this application, please continue to refer to Figure 9 and Figure 13 and in conjunction with reference Figure 14 and Figure 15 , Figure 14 for Figure 13 A schematic cross-sectional view of the structure. Figure 15 for Figure 14A partially enlarged structural diagram at point G2 shows that the second supporting component 190 includes at least one first supporting member 191 arranged along the second direction F2, and at least one second supporting member 192 arranged along the first direction F1. The direction from the top side of the battery cell body 1111 to the bottom side of the battery cell body 1111 intersects the first direction F1 and the second direction F2. The first supporting member 191 extends longitudinally along the first direction F1, and the second supporting member 192 extends longitudinally along the second direction F2. The at least one first supporting member 191 and the at least one second supporting member 192 are connected. The exhaust channel P includes a first sub-channel P1 defined by the first supporting member 191 and a second sub-channel P2 defined by the second supporting member 192. The first sub-channel P1 and the second sub-channel P2 are connected.

[0140] The top side and the bottom side of the battery cell body 1111 are two sides disposed opposite to each other. Exemplarily, in this embodiment of the application, the direction from the top side of the battery cell body 1111 to the bottom side of the battery cell body 1111 is parallel to the third direction F3, and the direction from the top side of the battery cell body 1111 to the bottom side of the battery cell body 1111 can be regarded as the height direction of the battery cell body 1111.

[0141] "The first support member 191 extends longitudinally along the first direction F1" means that the first support member 191 is a longitudinally elongated member, and the length direction of the first support member 191 is the first direction F1. "The second support member 192 extends longitudinally along the second direction F2" means that the second support member 192 is a longitudinally elongated member, and the length direction of the second support member 192 is the second direction F2.

[0142] For example, the first support member 191 may be the third heat-conducting member 183 illustrated in some of the foregoing embodiments. Two adjacent third heat-conducting members 183 along the second direction F2 define a first sub-channel P1. The second support member 192 may be a beam structure, and the internal space of the second support member 192 may form a second sub-channel P2.

[0143] For example, with Figure 15 For example, the black dashed arrow indicates the direction of the pressure relief airflow. The airflow can flow from the second sub-channel P2 to the first sub-channel P1.

[0144] The connection between the at least one first support member 191 and the at least one second support member 192 is not specifically limited, as long as a path can be formed that connects the first sub-channel P1 and the second sub-channel P2 and allows for pressure relief via the air guide channel D of the first support member 130. For example, any one of the at least one first support member 191 can be connected to any one of the at least one second support member 192. Another example is... Figure 13 For example, one part of the first carrier 191 corresponds to one of the second carriers 192, and another part of the first carrier 191 corresponds to two of the second carriers 192. The first sub-channel P1 of the first carrier 191 is connected to the second sub-channel P2 of the corresponding second carrier 192.

[0145] Thus, by setting the first bearing member 191 and the second bearing member 192, not only can a frame-type bearing structure be formed, improving the structural strength, stiffness, and deformation resistance of the second bearing member 190, but also, because the first sub-channel P1 and the second sub-channel P2 extend in different directions and are interconnected, a multi-directional, fully covered exhaust flow network is formed. This network can quickly and efficiently guide and discharge the gas discharged by the pressure relief mechanism 1112, improving pressure relief safety. It can be understood that multi-directionally extending channels can disperse airflow, reduce exhaust resistance, and reduce the risk of local gas accumulation or impact, thereby reducing the risk of thermal runaway propagation.

[0146] Based on some embodiments of this application, please continue to refer to Figure 3 , Figures 13 to 15 Multiple second support members 192 are provided, arranged along a first direction F1, and the first sub-channels P1 of two adjacent second support members 192 along the first direction F1 are connected. Multiple battery cell assemblies 110 are provided, arranged at least along the first direction F1, and two adjacent battery cell assemblies 110 along the first direction F1 are disposed on different second support members 192. End plates 112 other than those disposed on the first support member 130 are disposed on the corresponding second support members 192.

[0147] Thus, multiple second support members 192 are arranged along the first direction F1 and interconnected with the first sub-channel P1, forming a continuous, through, and long-distance exhaust flow path. This allows the depressurized gas to be discharged smoothly and quickly, improving the safety performance of the battery device 100. Simultaneously, since adjacent battery cell modules 110 along the first direction F1 are supported by different second support members 192, independent support and partitioned arrangement between battery cell modules 110 are achieved, reducing the risk of mutual compression and interference, and improving assembly stability and structural uniformity. In this structure, the support structure, exhaust channel P, and end plate 112 are integrated into one unit, simplifying the overall structure, reducing the number of parts, and improving space utilization, which is beneficial for device lightweighting and miniaturization.

[0148] Based on some embodiments of this application, please continue to refer to Figures 13 to 15The battery device 100 also includes a connecting member L, which has a connecting channel LP. Along the first direction F1, two adjacent second carriers 192 carrying different battery cell assemblies 110 are connected by the connecting member L, and the second sub-channels P2 of the two adjacent second carriers 192 are connected by the connecting channel LP.

[0149] Thus, the two adjacent second support members 192 are connected by the connecting member L, forming an integrated and continuous support frame, improving the overall structural strength, stiffness, and stability. The connecting channel LP connects the second sub-channels P2 of adjacent second support members 192, forming a continuous exhaust path, allowing depressurized gas to be discharged quickly, orderly, and directionally, improving the safety performance of the battery device 100. In this process, because the connecting member L achieves both structural connection and exhaust channel P connection, the structure can be simplified and the number of components reduced. Simultaneously, because the connecting member L connects the exhaust channel P of the second support member 190, the overall exhaust space is larger, thereby reducing gas accumulation or backflow at the connection point and lowering the risk of thermal runaway propagation.

[0150] According to some embodiments of this application, please refer to Figure 16 , Figure 16 The diagram below shows the structure of the first support member 130 and the second support member 190a cooperating in some other embodiments of this application. The battery device 100 also includes a fourth heat-conducting member 184. The first support member 130 and the second support member 190a define a gap. The fourth heat-conducting member 184 is disposed within the gap and supports a portion of the at least one battery cell assembly 110.

[0151] For example, with Figure 16 For example, the first support member 191a has a first sub-channel P1a, the second support member 192a has a second sub-channel P2a, and the exhaust channel Pa includes the first sub-channel P1a and the second sub-channel P2a. The first support member 191a has an opening corresponding to the pressure relief mechanism 1112 and connected to the first sub-channel P1a. A fourth heat-conducting element 184 is provided between two adjacent first support members 191 along the second direction F2. Figure 16 In the diagram, the positions of the first sub-channel P1a, the second sub-channel P2a, and the connecting channel LP are indicated by dashed lines.

[0152] For example, the fourth heat-conducting component 184 may be a heat-conducting pad, heat-conducting adhesive, heat-conducting silicone sheet, heat-conducting copper sheet, heat-conducting aluminum sheet, etc., without specific limitations.

[0153] Thus, a gap is formed between the first supporting component 130 and the second supporting component 190a, and a fourth heat-conducting component 184 is arranged within the gap. This provides both heat insulation or heat dissipation space between the structures and stable support for the battery cell assembly 110, balancing structural reliability and thermal management effectiveness. The opening on the first supporting component 191a corresponds to the pressure relief mechanism 1112 and communicates with the first sub-channel P1a, allowing the gas discharged from the pressure relief mechanism 1112 to quickly enter the first sub-channel P1a, achieving directional and efficient airflow and improving the safety performance of the battery device 100. It can be understood that this structure enhances the load-bearing capacity of the second supporting component 190a while also ensuring effective thermal management.

[0154] According to some embodiments of this application, the first carrier member 130 has a receiving cavity. The battery device 100 also includes a wiring harness assembly, a portion of which is received within the receiving cavity.

[0155] Thus, by increasing the size of the first supporting component 130 along the first direction F1, the space of the receiving cavity can be increased, which in turn allows for the accommodation of more wiring harness assemblies. This not only makes full use of the structural space and improves space utilization, but also allows the receiving cavity to protect and isolate the wiring harness assemblies, reducing the impact of high temperature, high pressure gas, vibration, etc., on the wiring harness, thereby improving the safety and stability of the battery device 100. At the same time, since the wiring harness is not exposed and does not occupy external installation space, it is conducive to achieving a compact and lightweight structure, while also facilitating the layout of other components.

[0156] It should be noted that in some other embodiments of this application, please refer to Figure 17 , Figure 17 This is a perspective structural diagram of a portion of the battery device in some other embodiments of this application. The battery cell 111a in the battery cell assembly 110a includes a battery cell body 1111a and a pressure relief mechanism 1112a disposed on the top side of the battery cell body 1111a. The location of the pressure relief mechanism 1112a is not specifically limited here.

[0157] Therefore, as illustrated in the above embodiments, this application embodiment uses a first supporting component 130 to support the battery management unit 120 and the corresponding end plate 112, allowing the battery management unit 120 and the corresponding end plate 112 to share a single supporting structure, reducing the number of components and facilitating assembly. The first supporting component 130, whose size can be increased along the first direction F1, can also provide floating space for the floatingly mounted electrical management unit. Furthermore, it can be combined with a pressure relief mechanism 1112, a second supporting component 190, and a connecting component L to achieve a safer pressure relief method. Additionally, it can be combined with several heat-conducting structures and thermal management components 170 to improve the overall thermal management effect and provide installation space for wiring harness assemblies, etc. Therefore, the battery device 100 provided by this application embodiment can improve the energy density of the device, facilitate assembly, and enhance thermal management effect while ensuring structural reliability.

[0158] According to some embodiments of this application, this application provides an energy storage system including the battery device 100 in any of the above embodiments.

[0159] In some embodiments, the energy storage system further includes an energy storage converter, and the aforementioned battery device 100 is electrically connected to the energy storage converter. The energy storage converter can convert energy generated by solar energy, wind power, or fuel cells into direct current and store it in the battery. When needed, the energy in the battery is output. The energy storage system can provide users with reliable energy reserves and provide backup power for users in the event of power outages or insufficient power, making it convenient for users to use.

[0160] The energy storage system also possesses the advantages of the battery device 100 described above, and no specific limitations are made here.

[0161] It should be noted that the energy storage system provided in this application is suitable for long-term energy storage. Its three-dimensional layout and modular design of internal components enable stable charge-discharge operation for 4 hours, 8 hours, or even longer, meeting the stringent requirements of high-capacity energy storage applications for structural stability and electrical connection durability. Using the battery device 100 provided in this application embodiment can provide strong support for the reliable operation of long-term energy storage systems.

[0162] According to some embodiments of this application, this application provides an electrical device including the battery device 100 in any of the above embodiments.

[0163] Electrical equipment refers to all kinds of equipment, devices, or systems that use electricity as their driving energy source and rely on an electricity supply to realize their functions. Electrical equipment covers a wide range, including but not limited to industrial production equipment, commercial office equipment, residential appliances, and infrastructure systems. Depending on the application scenario, electrical equipment has different requirements for the quality, reliability, and continuity of electrical energy.

[0164] Of course, the electrical equipment provided in this application embodiment may also include the aforementioned energy storage system. By integrating the energy storage system into the electrical equipment, the energy storage system can charge during off-peak hours and discharge during peak hours, achieving peak shaving and valley filling to reduce electricity costs; it can also serve as a backup power source during grid failures, ensuring uninterrupted operation of critical loads. This electrical equipment is suitable for various application scenarios such as industry, commerce, and communications, and through intelligent management, it achieves a comprehensive improvement in energy efficiency and economy.

[0165] The advantages of the battery device 100 described above are also present in this electrical device, and no specific limitations are made here.

[0166] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0167] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery device, characterized in that, include: At least one battery cell assembly, the battery cell assembly including at least a plurality of battery cells disposed along a first direction, and end plates located at both ends of the plurality of battery cells along the first direction; The first supporting component is an integral component and is provided with a first positioning hole; A battery management unit, wherein the battery management unit and the at least one battery cell assembly are arranged along the first direction, and the end plates of the battery management unit and the at least one battery cell assembly near the end of the battery management unit are both disposed on the first supporting component; The mounting component includes a mounting body and a bending portion. The mounting body is connected to the bearing side of the first bearing component through the bending portion. The bending portion is provided with a second positioning hole. The battery management unit is disposed on the mounting body. A positioning element, passing through the first positioning hole and the second positioning hole, and respectively clearance-fitting the first positioning hole and the second positioning hole; and A connector connects the first load-bearing component and the bent portion; The battery management unit includes an electrical panel assembly and a maintenance panel assembly. The mounting component for mounting the electrical panel assembly is a first mounting component, and the mounting component for mounting the maintenance panel assembly is a second mounting component. The second positioning holes on the bent portion of the first mounting component and the second positioning holes on the bent portion of the second mounting component are spaced apart along the first direction. The mating clearance between the second positioning hole on the bent portion of the first mounting component and the corresponding positioning element is the first clearance, and the mating clearance between the second positioning hole on the bent portion of the second mounting component and the corresponding positioning element is the second clearance. The first clearance and the second clearance are different.

2. The battery device according to claim 1, characterized in that, The first bearing component includes a bearing body and a protrusion, the protrusion being disposed on the bearing side of the bearing body; The end plate disposed on the first bearing member is provided on the first bearing member through the protrusion; The battery management unit is located on the bearing side of the supporting body.

3. The battery device according to claim 2, characterized in that, The protrusion is located away from the battery management unit along the first direction, and defines a stepped portion with the bearing side of the bearing body; The stepped section is used to support the at least one battery cell assembly.

4. The battery device according to any one of claims 1-3, characterized in that, The first mounting component and the second mounting component are spaced apart along a second direction; The direction from the top side of the battery cell to the bottom side of the battery cell, the first direction, and the second direction intersect each other.

5. The battery device according to any one of claims 1-3, characterized in that, The battery device further includes a housing, which includes a base and a cover, with the cover covering the base; the first supporting component and the battery cell assembly are both disposed on the base and located within the accommodating space defined by the cover and the base; The cover has an opening through which the battery management unit is exposed to the housing.

6. The battery device according to any one of claims 1-3, characterized in that, The battery device also includes thermal management components; Both the battery cell assembly and the first supporting component are located on the top side of the thermal management component.

7. The battery device according to claim 6, characterized in that, The battery device further includes a mounting component, and the battery management unit is disposed on the bearing side of the first bearing component via the mounting component; The battery device further includes a first heat-conducting element disposed between the mounting component and the first supporting component; and / or The battery device further includes a second heat-conducting element, which is disposed between the mounting component and the battery management unit.

8. The battery device according to claim 6, characterized in that, The battery device further includes a third heat-conducting element, which is disposed between the battery cell assembly and the thermal management component.

9. The battery device according to any one of claims 1-3, characterized in that, The battery cell includes a battery cell body and a pressure relief mechanism located on the bottom side of the battery cell body; The battery device further includes a second support component connected to the first support component. The second support component is used to support a portion of the at least one battery cell assembly. The second support component has an exhaust channel corresponding to the pressure relief mechanism. The first support component has a venting channel communicating with the exhaust channel.

10. The battery device according to claim 9, characterized in that, The second supporting component includes at least one first supporting member arranged along the second direction and at least one second supporting member arranged along the first direction; the direction from the top side of the battery cell body to the bottom side of the battery cell body, the first direction and the second direction intersect each other; The first support member extends longitudinally along the first direction, the second support member extends longitudinally along the second direction, and the at least one first support member is connected to the at least one second support member; The exhaust passage includes a first sub-passage defined by the first support member and a second sub-passage defined by the second support member; the first sub-passage and the second sub-passage are connected.

11. The battery device according to claim 10, characterized in that, The second carrier is provided in multiple ways, and the second carrier is arranged along the first direction. The first sub-channels of two adjacent second carriers along the first direction are connected. The battery cell assembly is provided in multiple ways, and the battery cell assemblies are arranged at least along the first direction. Two adjacent battery cell assemblies along the first direction are disposed on different second support members. The end plates other than those disposed on the first support member are disposed on the corresponding second support members.

12. The battery device according to claim 11, characterized in that, The battery device further includes a connecting component having a connecting channel; Along the first direction, two adjacent second carriers carrying different battery cell assemblies are connected by the connecting member, and the second sub-channels of the two adjacent second carriers are connected by the connecting channel.

13. The battery device according to claim 9, characterized in that, The battery device further includes a fourth thermal conductive element, the first support member and the second support member defining a gap, the fourth thermal conductive element being disposed within the gap and supporting a portion of the at least one battery cell assembly.

14. The battery device according to any one of claims 1-3, characterized in that, The first supporting component has a receiving cavity; The battery device also includes a wiring harness assembly, a portion of which is housed within the receiving cavity.

15. An energy storage system, characterized in that, Includes the battery device as described in any one of claims 1-14.

16. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-14.

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