Battery assembly, combined battery assembly, and electronic device

Abstract

The application relates to a battery assembly, a combined battery assembly and an electronic device. The battery assembly comprises a first shell and a second shell. The first shell is internally provided with a first number of battery cells. The second shell is internally provided with a second number of battery cells, a control module and a power conversion module. The control module and the power conversion module are respectively used for controlling the working state of the battery assembly and realizing power conversion of the battery assembly. The second number is different from the first number. The first shell and the second shell are arranged along a first direction. The first shell further comprises a first connecting structure. The second shell comprises a second connecting structure used for cooperating with the first connecting structure. The first shell and the second shell are connected through the first connecting structure and the second connecting structure and are detachably fixed together. Thus, the battery cells are arranged in two independent shells. The first shell and the second shell are split into two units for separate carrying. The volume and weight are reduced, and the operation difficulty of carrying and installation is reduced.

Description

Technical Field

[0001] This application relates to the field of energy storage power supply, and more particularly to a battery module, a combined battery module, and an electronic device. Background Technology

[0002] Communication base station backup power supply systems generally use 48V lithium iron phosphate battery packs as the main energy storage medium. Battery equipment needs to be compatible with standard integrated cabinets in data centers, while simultaneously meeting requirements for energy storage capacity, operational reliability, and ease of on-site assembly and maintenance. Currently, most battery products adopt an integrated single-pack structure, such as modules with 15 cells in a fixed series configuration. These 15-cell integrated modules have a large number of cells, resulting in a large overall size and weight, making handling difficult. Furthermore, their shape is poorly suited to the cabinet space, leading to low space utilization and failing to meet the requirements for lightweight handling. Summary of the Invention

[0003] The purpose of this application is to provide a battery module, a combined battery module, and an electronic device to solve the problems mentioned in the background art.

[0004] To address the aforementioned problems, in a first aspect, a battery assembly is provided, comprising a first housing and a second housing. The first housing contains a first number of battery cells, and the second housing contains a second number of battery cells. The second housing also contains a control module and a power conversion module. The control module controls the operating state of the battery assembly, and the power conversion module performs power conversion for the battery assembly. The second number of battery cells differs from the first number. The first and second housings are arranged along a first direction. The first housing further includes a first connecting structure, and the second housing includes a second connecting structure for cooperating with the first connecting structure. The first housing and the second housing are detachably fixed together by being connected through the first and second connecting structures.

[0005] Therefore, by separating the battery cells into two independent first and second housings, the overall battery structure is arranged in a modular fashion. This allows the first and second housings to be disassembled into two independent units for separate handling, transport, and installation. The size and weight of each unit are significantly reduced, effectively simplifying handling and installation and solving the problem of concentrated weight and inconvenient handling associated with large, integrated modules. Furthermore, the first and second housings are secured using a detachable connection structure, enabling step-by-step installation through the first and second connection structures. This avoids the assembly difficulties associated with large, integrated modules, and allows for individual disassembly of either housing for inspection or cell replacement during later maintenance, eliminating the need to disassemble the entire unit and improving maintenance convenience.

[0006] In one embodiment, the first connection structure and / or the second connection structure are provided with a heat dissipation structure and / or a heat absorption structure. The heat dissipation structure is used to conduct and dissipate the heat generated when the battery assembly is working, and the heat absorption structure is used to absorb the heat generated when the battery assembly is working.

[0007] In one embodiment, the first connecting structure includes one of a connecting rod and a connecting hole, and the second connecting structure includes the other of a connecting rod and a connecting hole, wherein the axial direction of the connecting rod and the extension direction of the connecting hole are parallel to the first direction, and the connecting rod is used to be accommodated in the connecting hole, thereby detachably fixing the first housing and the second housing together.

[0008] In one embodiment, the connecting hole is a blind hole, the opening of the connecting hole is located on the first surface of the first housing and extends in a direction perpendicular to the first surface, the connecting rod is disposed on the edge of the second surface of the second housing and extends in a direction perpendicular to the second surface away from the second housing; wherein, when the first housing and the second housing are arranged along the first direction and detachably fixed together, the connecting rod is accommodated in the corresponding connecting hole, the first surface of the first housing and the second surface of the second housing are in contact, and the first surface and the second surface are perpendicular to the first direction.

[0009] In one embodiment, the heat dissipation structure includes a heat sink disposed on the outer surface of the connecting rod in a region away from the inner side of the first housing or the second housing, and / or disposed on the inner surface of the connecting hole in a region away from the inner side of the first housing or the second housing.

[0010] In one embodiment, the second housing has a detachable panel on the side opposite to the first housing, and the control module and power conversion module are disposed on the detachable panel.

[0011] In one embodiment, the removable panel forms a housing wall on the side of the second housing opposite to the first housing, and the control module and power conversion module are disposed on the surface of the removable panel facing the interior of the second housing.

[0012] In one embodiment, an interactive component is provided on the surface of the detachable panel facing away from the interior of the second housing. The interactive component is used to realize at least the power transmission, safety protection, status indication operation and communication functions of the battery assembly.

[0013] In one embodiment, the battery assembly further includes two fasteners for securing the first number of battery cells within the first housing and the second number of battery cells within the second housing. Each fastener includes a first fastener and a second fastener, wherein the first fastener is used to bundle the first number of battery cells or the second number of battery cells, and the second fastener is used to limit the position of the first number of battery cells or the second number of battery cells.

[0014] In one embodiment, the first fixing member is provided with a phase change material, which is used to absorb and store the heat generated when the battery cell is working.

[0015] In one embodiment, the first fastener is an elastic fastener, which is used to adapt to the volume change of the battery cell during operation, so as to adaptively adjust the binding pre-tightening force on the battery cell.

[0016] In one embodiment, the connecting rod includes at least a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being respectively disposed on opposite edges of the second surface of the second housing, and the connecting hole includes at least a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole being respectively disposed on the edges of the first surface of the first housing corresponding to the first connecting rod and the second connecting rod.

[0017] In one embodiment, the first connecting rod and the second connecting rod have different shapes and / or sizes at their ends away from the second housing, and the first connecting hole and the second connecting hole are respectively configured to have different shapes and / or sizes corresponding to the ends of the first connecting rod and the second connecting rod away from the second housing.

[0018] In a second aspect, a combined battery assembly is provided for use in an electronic device, comprising a third housing and four sets of battery assemblies as described in the first aspect, wherein the four sets of battery assemblies are electrically connected to each other and disposed within the third housing for providing power output to the electronic device, wherein the four sets of battery assemblies are arranged along a second direction perpendicular to the first direction.

[0019] In one embodiment, the third housing is provided with at least four sets of receiving structures arranged along the second direction, each set of receiving structures being provided on opposite sides inside the third housing for receiving the corresponding battery assembly.

[0020] In one embodiment, a heat dissipation gap is formed between two adjacent sets of the receiving structures, and when the battery components are respectively installed on the corresponding receiving structures, the two adjacent sets of battery components are separated by the heat dissipation gap.

[0021] Thirdly, an electronic device is provided, including a device body and a combined battery assembly as described in the second aspect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the battery assembly structure in some embodiments of this application; Figure 2 This is a top view of a battery assembly in some embodiments of this application; Figure 3 This is another structural schematic diagram of the battery assembly in some embodiments of this application; Figure 4 This is an exploded structural diagram of the battery assembly in some embodiments of this application; Figure 5 for Figure 4 Another schematic diagram of the decomposed structure shown; Figure 6 This is another exploded structural diagram of the battery assembly in some embodiments of this application; Figure 7 for Figure 6 Another schematic diagram of the exploded structure shown; Figure 8 This is yet another exploded structural diagram of the battery assembly in some embodiments of this application; Figure 9 This is a further exploded structural diagram of the battery assembly in some embodiments of this application; Figure 10 This is a schematic diagram of the structure of the detachable panel in some embodiments of this application; Figure 11 This is another top view of the battery assembly in some embodiments of this application; Figure 12 This is a schematic diagram of a combined battery assembly in some embodiments of this application; Figure 13 This is a structural block diagram of an electronic device in some embodiments of this application.

[0024] The specific annotations in the attached figures are explained below: Battery assembly 100; first housing 110; first surface 111; second housing 120; control module 121; power conversion module 122; second surface 123; detachable panel 124; interaction component 1241; grounding terminal 1242; push button switch 1243; communication interface 1244; charging / discharging integrated terminal block 1245; battery status LED indicator 1246; hydraulic circuit breaker switch 1247; positive terminal 1248; negative terminal 1249; battery cell 130; first connection structure 140; connection hole 141; first connection hole 141a; second connection hole 1 41b; Positioning hole 1411; Limiting hole 1412; Nut 1413; Second connecting structure 150; Connecting rod 151; First connecting rod 151a; Second connecting rod 151b; Assembly hole 1511; Nut 1512; Heat dissipation structure 161; Heat absorption structure 162; First electrical connector 171; Second electrical connector 172; Fixing member 180; Second fixing member 182; Combined battery assembly 200; Third housing 210; Supporting structure 220; Heat dissipation gap 230; Electronic equipment 300; Equipment body 310; First direction a; Second direction c; Third direction b. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0027] In this document, the term "embodiment" 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 this phrase 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.

[0028] Please refer to the following: Figures 1-3 , Figure 1 This is a schematic diagram of the battery assembly structure in some embodiments of this application. Figure 2 This is a top view of the battery assembly in some embodiments of this application. Figure 3 This is another structural schematic diagram of a battery assembly in some embodiments of this application. In some embodiments, the battery assembly 100 includes a first housing 110 and a second housing 120. The first housing 110 contains a first number of battery cells 130, and the second housing 120 contains a second number of battery cells 130. The second housing 120 also contains a control module 121 and a power conversion module 122. The control module 121 controls the operating state of the battery assembly 100, and the power conversion module 122 performs power conversion for the battery assembly 100. The second number is different from the first number. The first housing 110 and the second housing 120 are arranged along a first direction a, such as... Figure 1 As shown, the first housing 110 further includes a first connecting structure 140, and the second housing 120 includes a second connecting structure 150 for cooperating with the first connecting structure 140. The first housing 110 and the second housing 120 are detachably fixed together by being connected through the first connecting structure 140 and the second connecting structure 150.

[0029] Wherein, the first direction 'a' is the horizontal arrangement direction in which the first housing 110 and the second housing 120 are mated and attached together. The first direction can be understood as the direction parallel to the horizontal direction when the first housing 110 and the second housing 120 are fixed together and placed on a horizontal plane. The first housing 110 and the second housing 120 are aligned and attached along this direction to complete the assembly. The control module 121 is specifically a Battery Management System (BMS), which can integrate a voltage sampling unit, a temperature acquisition unit, a control unit, etc., and can collect data such as voltage and temperature of each cell 130 in real time. The power conversion module 122 is specifically a DC-DC conversion circuit, which can realize functions such as voltage boosting and bucking to match the power supply voltage requirements of the load and stably output electrical energy adapted to the load. The first connection structure 140 and the second connection structure 150 are mutually matched mechanical locking assembly structures, which can be quickly disassembled and assembled, and the separation and combination assembly of the first housing 110 and the second housing 120 can be completed without the need for complex tooling.

[0030] Therefore, by distributing the battery cells 130 of the battery assembly 100 into two independent first housings 110 and second housings 120, the overall battery structure is arranged in a modular fashion. This allows the first housing 110 and second housing 120 to be separated into two independent units for individual handling, transport, and installation. The volume and weight of each unit are reduced, effectively lowering the difficulty of handling and installation, and solving the problem of concentrated weight and inconvenient handling of integrated large-volume modules. At the same time, the first housing 110 and second housing 120 are fixed together using a detachable connection structure, which allows for step-by-step installation through the first connection structure 140 and the second connection structure 150. This also avoids the problem of difficult assembly of integrated large-volume modules. Furthermore, during maintenance, either housing can be disassembled individually for inspection or cell replacement without disassembling the entire unit, improving the convenience of maintenance.

[0031] Furthermore, this application only has a control module 121 and a power conversion module 122 inside the second housing 120. The control module 121 and the power conversion module 122 uniformly manage and control the two sets of battery cell units with different numbers inside the first housing 110 and the second housing 120. This simplifies the electrical architecture of the whole machine, reduces the reuse of components, reduces hardware costs, and reduces the space occupied. It also further improves the integration and structural regularity of the battery assembly 100.

[0032] In some embodiments, the first quantity and the second quantity can be set to similar values, so that the overall external dimensions of the first housing 110 and the second housing 120 can remain basically consistent, the housing structure has strong versatility, facilitates standardized batch mold production, and effectively reduces mold development and material management costs.

[0033] In some embodiments, the battery cell 130 within the battery assembly 100 is a lithium iron phosphate (LFP) battery cell, meaning the cell 130 uses LFP lithium iron phosphate material, and the capacity of a single cell 130 can be 314 Ah (test conditions: 25°C, 0.5C charge / discharge rate); the dimensions of a single cell are 72 × 175 × 207 mm; wherein, the battery assembly 100 of this application uses 15 cells arranged in series, and after combination, outputs a 48V power supply system adapted to a communication base station; the system charging voltage is adjustable. The voltage range is 53V to 59V, and the adjustable discharge voltage range is 46V to 57V; the standard charging current supports custom settings from 15A to 75A; the system's constant power discharge can reach up to 4000W, and the peak discharge power is 4800W; the overall working efficiency of the 15-cell series is not less than 98%, which can meet the performance requirements of the backup power supply for the load; its long-term operating temperature range is -20℃ to +55℃, the storage temperature range is -25℃ to +55℃, and its service life can reach 15 years.

[0034] In some embodiments, the first quantity is specifically set to 8 and the second quantity is specifically set to 7, that is, 8 strings of cells are arranged inside the first housing 110 and 7 strings of cells are arranged inside the second housing 120. The two sets of cells are connected in series to form a complete 15-string energy storage circuit, constituting a 48V, 314Ah battery system.

[0035] In some embodiments, such as Figure 2 As shown, when the first quantity is specifically set to 8 and the second quantity is specifically set to 7, 8 strings of cells 130 are arranged inside the first housing 110. Among them, the length extension direction of 6 strings of cells 130 is parallel to the first direction a, and the width extension direction is parallel to the third direction b. They are arranged in layers from top to bottom along the third direction b. The length extension direction of the remaining 2 strings of cells 130 is parallel to the third direction b, and the width extension direction is parallel to the first direction a. These two strings of cells are arranged in the empty area on the side of the first housing 110 near the second housing 120, and are arranged in sections with the aforementioned 6 strings of cells, forming an overall layout of 8 strings of cells. The second housing 120 has 7 strings of battery cells 130 arranged inside. 5 strings of battery cells 130 extend in a direction parallel to the first direction a and in a direction parallel to the third direction b. They are arranged in layers from top to bottom along the third direction b. The remaining 2 strings of battery cells 130 extend in a direction parallel to the third direction b and in a direction parallel to the first direction a. They are arranged in the side area of ​​the second housing 120 away from the first housing 110, and are arranged in sections with the 5 strings of horizontal battery cells to form a complete arrangement of 7 strings of battery cells.

[0036] Among them, such as Figure 2 As shown, a first electrical connector 171 is provided on the side wall of the first housing 110 facing the second housing 120, and a second electrical connector 172 is provided on the side wall of the second housing 120 facing the first housing 110. After the first connecting structure 140 and the second connecting structure 150 are mechanically assembled by interlocking, the first electrical connector 171 and the second electrical connector 172 can be aligned and connected to conduct electricity, thereby realizing the electrical series connection between the battery cell 130 inside the first housing 110 and the battery cell 130 inside the second housing 120, forming a complete circuit. And as... Figure 2 As shown, when all the battery cells 130 inside the housing are arranged and assembled, they avoid the first electrical connector 171 and the second electrical connector 172 on the side wall. That is, the battery cell body will not interfere with the position of the first electrical connector 171 and the second electrical connector 172. While ensuring a sufficient number of battery cells, the installation space for electrical connection is reserved.

[0037] Please refer to the following: Figure 4 and Figure 5 , Figure 4 This is an exploded structural diagram of the battery assembly in some embodiments of this application. Figure 5 for Figure 4Another schematic diagram of the exploded structure shown shows that, in some embodiments, the first connection structure 140 and / or the second connection structure 150 are provided with a heat dissipation structure 161 and / or a heat absorption structure 162. The heat dissipation structure 161 is used to conduct and dissipate the heat generated when the battery assembly 100 is working, and the heat absorption structure 162 is used to absorb the heat generated when the battery assembly 100 is working.

[0038] Wherein, when the first connection structure 140 and / or the second connection structure 150 are provided with a heat-absorbing structure 162, the heat-absorbing structure 162 can be specifically set on the side of the first connection structure 140 and the second connection structure 150 close to the battery cell 130, so as to absorb the heat generated during the charging and discharging of the battery cell and the operation of the control module 121 and the power conversion module 122 at close range; when the first connection structure 140 and / or the second connection structure 150 are provided with a heat dissipation structure 161, the heat dissipation structure 161 can be set at the position of the first connection structure 140 and the second connection structure 150 facing the outside of the first housing 110 and the second housing 120, and the heat is dissipated to the outside through air convection.

[0039] Different assembly arrangements can be selected according to requirements to adapt to different heat dissipation needs. For example, heat dissipation structure 161 and heat absorption structure 162 can be installed on both the first connecting structure 140 and the second connecting structure 150, so that heat absorption and external heat dissipation can be completed simultaneously on both sides of the connecting structure; or the first connecting structure 140 and the second connecting structure 150 can both be equipped with only heat absorption structure 162, and heat can be dissipated externally through air convection; or the first connecting structure 140 can be equipped with heat absorption structure 162 alone, and the second connecting structure 150 can be equipped with heat dissipation structure 161 alone; or only the first connecting structure 140 or heat absorption structure 162 can be installed, or only the second connecting structure 150 can be equipped with heat dissipation structure 161 or heat absorption structure 162, so that heat conduction, absorption and dissipation can be completed through the connecting structure on one side. Thus, multiple arrangement schemes can be flexibly selected according to the actual heat dissipation environment and the heating power of the battery cell to adapt to the usage requirements of different working conditions.

[0040] Therefore, by integrating the heat dissipation structure 161 and the heat absorption structure 162 into the first connection structure 140 and the second connection structure 150, there is no need to add additional independent heat dissipation brackets, heat-conducting plates and other heat dissipation accessories, which further simplifies the number of parts in the whole machine and reduces assembly complexity and production costs. At the same time, by utilizing the heat dissipation structure 161 and the heat absorption structure 162 provided on the first connection structure 140 and the second connection structure 150, the working temperature of the battery cells 130 inside the first housing 110 and the second housing 120 can be better balanced, and the temperature difference between the battery cells inside the different housings can be reduced. This is conducive to the control module 121 to achieve balanced management of all battery cells and improves the overall operational stability and cycle life of the battery pack 100.

[0041] In some embodiments, the first connecting structure 140 includes one of a connecting rod and a connecting hole, and the second connecting structure 150 includes the other of a connecting rod and a connecting hole, wherein the axial direction of the connecting rod and the extension direction of the connecting hole are parallel to the first direction a, and the connecting rod is used to be received in the connecting hole, so that the first housing 110 and the second housing 120 are detachably fixed together.

[0042] The connecting rod extends horizontally along the first direction a, and the connecting hole is also formed through the first direction a. The direction in which the two are matched and inserted is consistent with the direction of travel for the mating assembly of the first housing 110 and the second housing 120. Specifically, when the first connecting structure 140 is configured as a connecting rod and the second connecting structure 150 is configured as a connecting hole, during assembly, the first housing 110 is pushed towards the second housing 120 along the first direction a, and the connecting rod is directly inserted into the corresponding connecting hole along the first direction a to achieve alignment and positioning. When the first connecting structure 140 is configured as a connecting hole and the second connecting structure 150 is configured as a connecting rod, during assembly, pushing the second housing 120 allows the connecting rod to extend into the connecting hole along the first direction a to achieve pre-positioning. The connecting rod and the connecting hole adopt a parallel extending mating structure in the same direction, which can play a guiding and positioning role during the splicing of the first housing 110 and the second housing 120, avoiding left-right and up-down offsets during assembly, and ensuring accurate alignment and contact between the first electrical connector 171 and the second electrical connector 172 to smoothly complete the electrical conduction between the two sets of battery cells.

[0043] Therefore, the plug-in connection structure of the connecting rod and the connecting hole is simple. The two shells can be aligned and assembled by simply pushing them in a straight line along the first direction a. No complicated alignment adjustment is required, and the assembly or disassembly operation can be completed quickly. Moreover, the plug-in connection of the connecting rod and the connecting hole can limit the first shell 110 and the second shell 120, restricting the relative displacement of the two shells during use and ensuring the stability of the mechanical connection.

[0044] Please refer to the following: Figures 4-8 , Figure 6 This is another exploded structural diagram of the battery assembly in some embodiments of this application. Figure 7 for Figure 6 Another schematic diagram of the exploded structure shown; Figure 8 This is another exploded structural diagram of the battery assembly in some embodiments of this application. In some embodiments, such as... Figure 6As shown, the connecting hole 141 is a blind hole. The opening of the connecting hole 141 is located on the first surface 111 of the first housing 110 and extends in a direction perpendicular to the first surface 111. The connecting rod 151 is disposed on the edge of the second surface 123 of the second housing 120 and extends in a direction perpendicular to the second surface 123 away from the second housing 120. When the first housing 110 and the second housing 120 are arranged along the first direction a and detachably fixed together, the connecting rod 151 is accommodated in the corresponding connecting hole 141, the first surface 111 of the first housing 110 and the second surface 123 of the second housing 120 are in contact, and the first surface 111 and the second surface 123 are perpendicular to the first direction a.

[0045] The first surface 111 and the second surface 123 are the mating end faces of the first housing 110 and the second housing 120, respectively, and their overall planes are perpendicular to the first direction a. Specifically, the first connecting structure is a connecting hole 141, and the second connecting structure is a connecting rod 151. The connecting hole 141 can be a blind hole structure, with an opening on the first surface 111. The connecting rod 151 is positioned at the edge of the second surface 123, avoiding the area where the battery cells and other structures are arranged inside the second housing 120, thus preventing spatial interference with internal components during assembly.

[0046] During assembly, the first housing 110 and the second housing 120 can be pushed closer together along the first direction a. The connecting rod 151 is inserted into the connecting hole 141 in a direction perpendicular to the second surface 123 until the first surface 111 and the second surface 123 are completely flat and fitted together. At this time, the connecting rod 151 is housed in the connecting hole 141, and the fit between the hole wall and the rod body achieves limiting, thereby locking the relative positions of the two housings along the first direction a. When the connecting rod 151 and the connecting hole 141 are aligned, the first surface 111 and the second surface 123 also align accordingly, allowing the first electrical connector 171 and the second electrical connector 172 to connect and achieve electrical connection, realizing electrical connection simultaneously with the completion of mechanical locking.

[0047] Therefore, the insertion guide structure of the connecting rod 151 and the connecting hole 141 is simple and reliable. The alignment and locking can be completed by pushing along the first direction a, which makes the assembly operation simple and reduces the installation difficulty. Setting the connecting rod 151 and the connecting hole 141 on the edge of the surface can evenly distribute the force on the contact end face of the first housing 110 and the second housing 120. After splicing, the overall structure is not easy to shake. During long-term use, it can continuously ensure stable contact and conduction of electrical connectors, and improve the operational reliability of the battery assembly 100.

[0048] Please refer to the following: Figure 9 , Figure 9This is a further exploded structural diagram of the battery assembly in some embodiments of this application. In some embodiments, the connecting hole 141 includes a positioning hole 1411 and a limiting hole 1412. The end of the positioning hole 1411 away from the limiting hole 1412 is the end where the opening of the connecting hole 141 is located. At least one nut 1413 is provided in the limiting hole 1412. The positioning hole 1411 is used for the connecting rod 151 to pass through. An assembly hole 1511 is provided on the edge of the second surface 123 of the second housing 120. At least one nut 1413 is provided in the assembly hole 1511. A nut 1512 is also provided on the end of the connecting rod 151 away from the second surface 123. The outer diameter of the nut 1512 is larger than the inner diameter of the assembly hole 1511.

[0049] During the pre-assembly of the connecting rod 151 and the second housing 120, the end of the connecting rod 151 without the nut 1512 is inserted into the assembly hole 1511 from one side of the second housing 120. Because the outer diameter of the nut 1512 is larger than the diameter of the assembly hole 1511, the nut 1512 will abut against the end face of the assembly hole 1511, forming an axial limit and preventing it from completely exiting the assembly hole 1511. This achieves the basic positioning of the connecting rod 151 during pre-assembly. Subsequently, the nut 1512 of the connecting rod 151 can be rotated using a tool to make the external thread on the outer wall of the connecting rod 151 engage with the nut 1413 pre-embedded inside the assembly hole 1511 and lock it in place, completing the pre-assembly and fixation of the connecting rod 151 on the second housing 120.

[0050] After the connecting rod 151 is pre-installed and fixed, the second housing 120 is pushed toward the first housing 110 along the first direction a, so that the end of the connecting rod 151 is aligned with the positioning hole 1411 of the connecting hole 141 on the first housing 110. The connecting rod 151 can pass smoothly through the positioning hole 1411 and be received inside the limiting hole 1412. The nut 1512 of the connecting rod 151 can be tightened again with a tool so that the external thread at the front end of the connecting rod 151 is locked with the thread of the nut 1413 pre-embedded inside the limiting hole 1412 until the first surface 111 of the first housing 110 and the second surface 123 of the second housing 120 are completely in contact.

[0051] Therefore, the size of the nut 1512 is larger than the outer diameter of the assembly hole 1511, which can play a locking and limiting role in the pre-assembly stage. In addition, both the assembly hole 1511 and the limiting hole 1412 are equipped with nuts 1413, which can form a bidirectional limiting on both ends of the connecting rod 151, effectively suppressing the problem of loosening or separation during the operation of the housing, ensuring that the first surface 111 and the second surface 123 are in close contact for a long time, and stably maintaining the electrical conduction between the housings. At the same time, the overall disassembly and assembly can be completed with only conventional general tools, making the operation of disassembling the housing more convenient when inspecting and replacing the battery cells.

[0052] like Figure 4 As shown, in some embodiments, the heat dissipation structure 161 includes a heat sink, which is disposed on the outer surface of the connecting rod 151 in a region away from the inner side of the first housing 110 or the second housing 120, and / or on the inner surface of the connecting hole 141 in a region away from the inner side of the first housing 110 or the second housing 120.

[0053] The connecting rod 151 and the connecting hole 141 serve as connecting carriers for the first housing 110 and the second housing 120 to mate. They can simultaneously support heat sinks as heat dissipation structures 161. The heat sinks are arranged on the outside of the connecting rod 151 and the outside of the connecting hole 141, away from the battery cell 130 inside the housing, so that heat can be dissipated through air convection. When the connecting rod 151 is inserted into the connecting hole 141, the heat sinks on the outer wall of the connecting rod 151 and the heat sinks on the inner wall of the connecting hole 141 can also come into contact with each other, forming a continuous heat conduction path at the insertion gap between the connecting rod 151 and the connecting hole 141, which can quickly conduct heat.

[0054] The heat generated by the charging and discharging of the battery cell 130, the operation of the control module 121 and the power conversion module 122 can be transferred to the connecting rod 151 and the connecting hole 141. The heat is then transferred to the heat sink on the outside of the connecting rod 151 and the inner wall of the connecting hole 141 to increase the contact area with the air, and the heat is dissipated outward by air convection.

[0055] The heat sink can be arranged only on the outer surface of the connecting rod 151, or only on the inner surface of the connecting hole 141. Alternatively, heat sinks can be installed on both the connecting rod 151 and the connecting hole 141. The arrangement can be flexibly selected according to the actual heat generation power of the battery assembly 100 and the ventilation and heat dissipation environment of the cabinet to adapt to different heat dissipation requirements.

[0056] Therefore, by reusing the mechanical connection structure of connecting rod 151 and connecting hole 141 to integrate heat sink, there is no need to set up additional independent heat conduction and heat dissipation components, reducing the number of parts in the whole machine and reducing the cost of mold opening, assembly and material management; moreover, the heat sink itself is thin and has a large extension area, resulting in better heat conduction efficiency; at the same time, the sheet-like structure of the heat sink has better flexibility and fit, and can closely fit the arc-shaped outer wall of connecting rod 151 and the inner wall of connecting hole 141, reducing the heat conduction contact gap and reducing heat transfer loss.

[0057] In some embodiments, the connecting rod 151 is configured as a threaded rod, and a phase change material can be integrated on the connecting rod 151 to form a heat absorption structure 162, and / or a heat sink structure can be integrated to form a heat dissipation structure 161.

[0058] The connecting rod 151 can be a threaded rod structure with threads distributed around its outer periphery. The threads can stably engage with the nuts 1413 pre-embedded inside the assembly hole 1511 and the limiting hole 1412, ensuring the locking strength after the first housing 110 and the second housing 120 are assembled. The threaded rod has an uneven threaded outer wall, which can also provide a larger attachment and installation base for phase change materials and heat sinks. For example, when a phase change material is provided on the connecting rod 151 as a heat absorption structure 162, the phase change material can fill and cover the threaded groove of the threaded rod, closely adhering to the surface of the rod. The thread can increase the contact area with the connecting rod 151, quickly absorbing the generated heat, and buffering the instantaneous temperature rise through the heat storage characteristics of the phase change material itself, avoiding local heat accumulation. When a heat sink is arranged on the outside of the connecting rod 151 as a heat dissipation structure 161, the sheet-like heat sink can be attached and fixed to the outer wall of the thread along the axial or circumferential direction of the threaded rod. The concave and convex threaded surface of the threaded rod can improve the tightness of the fit between the heat sink and the connecting rod 151, reducing the thermal gap.

[0059] In actual assembly, the heat-absorbing structure 162 filled with phase change material can be set only on the threaded rod, or only the heat dissipation structure 161 can be set, or both phase change material and heat dissipation fin can be matched on the same threaded rod to adapt to different heat dissipation power application scenarios.

[0060] Therefore, the threaded grooves of the threaded rod can increase the contact area of ​​the phase change material, the heat sink and the connecting rod 151, improve the heat conduction efficiency, and the phase change material can generate heat stably and evenly in an instant. The heat sink expands the air heat exchange area through its plate structure. Both can effectively reduce the temperature difference between the battery cells 130 inside the first housing 110 and the second housing 120, thereby extending the overall service life.

[0061] In some embodiments, when the connecting rod 151 is a threaded rod structure, the threads distributed around the outer periphery of the rod can be directly formed by the heat-absorbing structure 162, so that the threads on the connecting rod 151 can both complete the thread engagement and achieve the heat storage effect; or, the threads distributed around the outer periphery of the rod can be directly formed by the heat sink structure, so that the threads on the connecting rod 151 can both complete the thread engagement and achieve heat dissipation.

[0062] In this application, the heat-absorbing structure 162 can be formed into a sealed cavity by a thermally conductive material such as metal, and the sealed cavity is filled with a phase change material, which can absorb and store heat through the phase change material.

[0063] In some embodiments, the heat-absorbing structure 162 made of phase change material and the heat-dissipating structure 161 made of heat sink can also be directly integrally formed and disposed on the rod body portion or other positions of the connecting rod 151. In some embodiments, the heat-absorbing structure 162 made of phase change material and the heat-dissipating structure 161 made of heat sink can be flexibly disposed in different forms at different positions of the connecting rod 151 without affecting the threaded engagement and locking of the connecting rod 151.

[0064] Please continue reading. Figure 3 In some embodiments, the second housing 120 has a detachable panel 124 on the side opposite to the first housing 110, and the control module 121 and the power conversion module 122 are disposed on the detachable panel 124.

[0065] The detachable panel 124 is mounted on the outer end face of the second housing 120 away from the first housing 110, and the control module 121 and the power conversion module 122 are integrated and fixed on the inner side panel of the detachable panel 124.

[0066] Therefore, when repairing electronic control devices, it is not necessary to disassemble the connection structure between the first housing 110 and the second housing 120. Only the fasteners of the detachable panel 124 need to be removed to directly take out the entire panel, which simplifies the operation steps and does not damage the arrangement of the battery cells. After the equipment is repaired, it is not necessary to realign the first connection structure and the second connection structure. At the same time, the control module 121 and the power conversion module 122 are set on the outer panel of the detachable panel 124, so that the heat generated during operation can be directly dissipated outward through the outer surface of the detachable panel 124, reducing the heat generated by the control module 121 and the power conversion module 122 from being conducted to the battery cell area inside the housing.

[0067] In some embodiments, the removable panel 124 forms a housing wall on the side of the second housing 120 opposite to the first housing 110, and the control module 121 and the power conversion module 122 are disposed on the surface of the removable panel 124 facing the interior of the second housing 120.

[0068] The detachable panel 124 serves as a complete sidewall of the second housing 120 away from the first housing 110. It works in conjunction with the other enclosing structures of the second housing 120 to form a closed cavity. The control module 121 and the power conversion module 122 are both installed on the inner panel of the detachable panel 124 facing the inside of the housing and are housed inside the cavity of the second housing 120. Thus, the detachable panel 124 can form an external protective shield, which can prevent the control module 121 and the power conversion module 122 from being directly exposed to the outside and causing problems such as bumps, dust accumulation, and moisture on the wiring, thereby improving the safety of electrical operation.

[0069] Please refer to the following: Figure 10, Figure 10 This is a schematic diagram of the structure of a detachable panel in some embodiments of this application. In some embodiments, an interactive component 1241 is provided on the surface of the detachable panel 124 that is away from the interior of the second housing 120. The interactive component 1241 is used to realize the power transmission, safety protection, status indication operation and communication functions of the battery assembly 100.

[0070] The interactive component 1241 is exposed on the outer surface of the detachable panel 124, and can be operated directly without opening the detachable panel 124. The interactive component 1241 is electrically connected to the control module 121 and the power conversion module 122 fixed inside the panel.

[0071] Specifically, such as Figure 10 As shown, the interactive component 1241 may specifically include a grounding terminal 1242, a push-button switch 1243, a communication interface 1244, a charging and discharging integrated terminal block 1245, a battery status LED indicator 1246, a hydraulic circuit breaker switch 1247, a positive terminal 1248, and a negative terminal 1249. Among them, the grounding terminal 1242 is used for protective grounding of the whole machine, discharging static electricity and fault leakage current, and ensuring equipment safety; the push-button switch 1243 can control the power-on and manual reset of the battery module 100; the communication interface 1244 has two dry contacts, D01 and D02, which can be used to upload signals such as equipment operation and fault alarm to the platform; the charging and discharging integrated terminal block 1245 has INPUT charging input and OUTPUT discharging output, which are respectively connected to the external load wiring to realize power transmission; the battery status LED indicator 1246 can intuitively reflect the real-time operating status of the equipment; the hydraulic magnetic circuit breaker switch 1247 is connected in series with the main power circuit, which can manually open and close the circuit, and automatically cut off the circuit in case of overload or short circuit, playing a safety protection role; the positive terminal 1248 and the negative terminal 1249, together with the charging and discharging integrated terminal block 1245, form a complete power transmission path.

[0072] The interactive components 1241 are all integrated on the outer side of the detachable panel 124, so there is no need to disassemble the detachable panel 124. Grounding wiring, equipment start-up and shutdown, and operation status can be completed directly on the outside of the detachable panel 124. In case of failure, only the detachable panel 124 needs to be disassembled to simultaneously inspect the components on the inside and outside, without having to disassemble the connecting rod 151, connecting hole 141 and other connecting structures between the first housing 110 and the second housing 120.

[0073] Please see Figure 11 , Figure 11This is another top view of the battery assembly in some embodiments of this application. In some embodiments, the battery assembly 100 further includes two fasteners 180, which are used to fix the first number of battery cells 130 in the first housing 110 and the second number of battery cells 130 in the second housing 120. Each fastener 180 includes a first fastener (not shown) and a second fastener 182. The first fastener is used to bundle the first number of battery cells 130 or the second number of battery cells 130, and the second fastener 182 is used to limit the first number of battery cells 130 or the second number of battery cells 130.

[0074] The second fixing member 182 can be specifically configured as a pressure strip structure. The pressure strip can extend along the third direction b of the cell arrangement and be laid on the top surface of the cell group inside the first housing 110 and the cell group inside the second housing 120, respectively. The two ends of the pressure strip can be locked and fixed to the side wall of the housing by fasteners. The pressure strip is pressed and adhered to the upper end surface of the cell 130. The first fixing member can be a binding component such as plastic steel cable ties, which surrounds and covers the circumferential side wall of the first number of cells 130 or the second number of cells 130, pre-gathering the dispersed cells into a whole and preventing the lateral displacement of individual cells. On this basis, the second fixing member 182 in the form of a strip-shaped pressure strip applies a vertically downward pressing and limiting force from the top of the cell, which cooperates with the bearing surface of the bottom housing to form a two-way clamping constraint on the cell.

[0075] Since there are two different orientations of the battery cells 130 when they are arranged, the first fixing member can complete the overall binding and gathering of the horizontal battery cells 130 and the vertical side battery cells 130 respectively. The second fixing member 182 is then installed across the top surface of the battery cells 130 to uniformly restrict the movement of the battery cells in the vertical and horizontal directions, so that there will be no problem of local loosening due to the different arrangement directions of the two battery cells.

[0076] Specifically, during reassembly, the first fastener is used to bundle all the battery cells into a whole battery cell, then the whole battery cell is placed into the corresponding housing, and finally the second fastener 182 is assembled for locking and positioning.

[0077] Thus, a double fixing structure is formed by the first fixing member binding and the second fixing member 182 pressing and limiting. The first fixing member can realize the overall gathering of the battery cell, and the second fixing member 182 can apply pressure from the top. The battery cell has no shaking gap inside the shell, ensuring that the position of the battery cell remains stable under various working conditions.

[0078] In some embodiments, the first fixing member is provided with a phase change material, which is used to absorb and store the heat generated when the battery cell 130 is working.

[0079] The first fixing member is a binding component that surrounds and covers the periphery of the battery cell 130. It can embed and fill the cavity of the first fixing member, allowing the phase change material to adhere to the side wall of the battery cell over a large area and make close contact with the heating surface of the battery cell. During the charging and discharging process of the battery cell, heat is continuously released. The phase change material in contact with the battery cell 130 can quickly absorb heat and store thermal energy through its own phase change, suppressing the instantaneous temperature change of the battery cell 130 and avoiding local heat accumulation and overheating when multiple battery cells are working together. At the same time, the first fixing member is arranged around the entire battery cell, and the phase change material can simultaneously achieve a uniform temperature effect on all battery cells inside the corresponding shell, reducing the temperature difference between different battery cells and facilitating the control module 121 to perform balanced management of all battery cells.

[0080] Thus, by integrating phase change material into the first fixing component used for bundling battery cells, the first fixing component can simultaneously achieve the gathering of battery cells 130 and the storage of heat, further reducing the number of components and lowering material costs and assembly processes.

[0081] In some embodiments, the first fixing member is composed of a thermally conductive material, or at least the portion of the first fixing member that is disconnected from the battery cell 130 is composed of a thermally conductive material, so that the phase change material filled inside the first fixing member can absorb and store the heat generated by the battery cell during operation through the first fixing member.

[0082] In some embodiments, the first fastener is an elastic fastener, which is used to adapt to the volume change of the battery cell 130 during operation, so as to adaptively adjust the binding pre-tightening force on the battery cell 130.

[0083] The first fixing component can be made of an elastic material, possessing good expansion and contraction capabilities, and can tightly wrap around the outer peripheral wall of the entire battery cell 130. During high-frequency charging and discharging, the battery cell 130 will undergo slight expansion and contraction deformation due to internal electrochemical reactions and temperature changes. Based on its own elastic properties, the first fixing component can synchronously and adaptively expand and contract with the volume changes of the battery cell 130: when the battery cell 130 heats up and expands, the elastic fixing component stretches and expands appropriately, automatically releasing the binding gap, avoiding rigid compression of the battery cell shell that could cause battery cell deformation or damage to the internal electrode plates; when the battery cell 130 cools down and contracts, the elastic fixing component retracts and resets, always maintaining a close and binding state on the battery cell cluster, preventing problems such as loosening, displacement, or shifting of the battery cell.

[0084] Therefore, by setting the first fastener as an elastic fastener, it can adapt to the volume expansion and contraction changes during the charging and discharging process of the battery cell, dynamically adjust the binding pre-tightening force, solve the problems of the rigid binding structure easily damaging the battery cell and the fixing loosening after the battery cell shrinks, effectively protect the structural integrity of the battery cell and reduce the risk of battery cell failure.

[0085] Please continue reading. Figures 7-8 In some embodiments, the connecting rod 151 includes at least a first connecting rod 151a and a second connecting rod 151b, the first connecting rod 151a and the second connecting rod 151b being respectively disposed on opposite edges of the second surface 123 of the second housing 120, and the connecting hole 141 includes at least a first connecting hole 141a and a second connecting hole 141b, the first connecting hole 141a and the second connecting hole 141b being respectively disposed on the edges of the first surface 111 of the first housing 110 corresponding to the first connecting rod 151a and the second connecting rod 151b.

[0086] The first connecting rod 151a and the second connecting rod 151b are respectively placed on two opposing side edges of the second surface 123. The corresponding first connecting hole 141a and the second connecting hole 141b are arranged at the matching edge position of the first surface 111. The two sets of connecting rods and connecting holes are symmetrically distributed. During assembly, the first housing 110 and the second housing 120 can be pushed together along the first direction a. The first connecting rod 151a is aligned and inserted into the first connecting hole 141a, and the second connecting rod 151b is aligned and inserted into the second connecting hole 141b. The two sets of plug-in structures are simultaneously guided and aligned, which can form a limiting constraint on both sides of the first housing 110 and the second housing 120, preventing the housing from deflecting or tilting during the assembly process, ensuring the complete fit between the first surface 111 and the second surface 123, and thus allowing the first electrical connector 171 and the second electrical connector 172 between them to stably abut and conduct electricity.

[0087] The design incorporates two independent sets of connecting rods and connecting holes for fixation, which further enhances the overall rigidity of the first housing 110 and the second housing 120 after assembly, reducing the likelihood of loosening during cabinet vibration and handling. Simultaneously, the two symmetrically arranged plug-in structures serve as mutual assembly benchmarks, reducing alignment difficulty during assembly; simply aligning the connecting rods on both sides is sufficient for quick pre-positioning.

[0088] In some embodiments, the shapes and / or sizes of the ends of the first connecting rod 151a and the second connecting rod 151b that are away from the second housing 120 are different, and the shapes and sizes of the first connecting hole 141a and the second connecting hole 141b are respectively set to correspond to the ends of the first connecting rod 151a and the second connecting rod 151b that are away from the second housing 120.

[0089] That is, in some embodiments, the shape and / or size of the end of the first connecting rod 151a away from the second housing 120 is different from the shape and / or size of the end of the second connecting rod 151b away from the second housing 120, while the shape and size of the first connecting hole 141a are approximately the same as the shape and size of the end of the first connecting rod 151a away from the second housing 120, thus adapting to the first connecting rod 151a, and the shape and size of the second connecting hole 141b are approximately the same as the shape and size of the end of the second connecting rod 151b away from the second housing 120, thus adapting to the second connecting rod 151b. Wherein, the ends of the first connecting rod 151a and the second connecting rod 151b adopt differentiated shapes and / or sizes, and the cavity contours of the matching first connecting hole 141a and second connecting hole 141b correspond one-to-one, forming a foolproof alignment structure. During the assembly process, the end of the first connecting rod 151a can be fully inserted into the first connecting hole 141a and the end of the second connecting rod 151b can be fully inserted into the second connecting hole 141b only when the second housing 120 is placed at the correct angle and in the correct position. If the housing is upside down or flipped left or right, the outline of the end of the connecting rod cannot match the outline of the corresponding connecting hole and cannot be inserted, thus failing to complete the pre-assembly. Structurally, this avoids the problems of reverse assembly and misaligned assembly.

[0090] Please continue reading. Figures 7-8 In some embodiments, there are two of each of the first connecting rod 151a and the second connecting rod 151b, and two of each of the first connecting hole 141a and the second connecting hole 141b. The two sets of first connecting rods 151a and the two sets of second connecting rods 151b can be arranged asymmetrically and staggeredly on the second surface 123, and the two sets of first connecting holes 141a and the two sets of second connecting holes 141b can be matched and arranged asymmetrically and staggeredly on the first surface 111 to form a foolproof structure.

[0091] Specifically, the two first connecting rods 151a and the two second connecting rods 151b can be staggered with inconsistent vertical spacing. Correspondingly, the two sets of first connecting holes 141a and the two sets of second connecting holes 141b are positioned at the same asymmetrical points on the first surface 111 of the first housing 110. During assembly, only when the second housing 120 is correctly oriented towards the first housing 110 can the four connecting rods be synchronously aligned with their corresponding four connecting holes and smoothly inserted. If the second housing 120 is flipped vertically or horizontally before alignment, the spacing between the connecting rods and the hole spacing will not match, resulting in some connecting rods being unable to align with the holes and thus unable to be inserted. This directly prevents the housing from being installed incorrectly in the wrong direction.

[0092] Please see Figure 12 , Figure 12The diagram below illustrates a combined battery assembly in some embodiments of this application. In some embodiments, the combined battery assembly 200 is applied to an electronic device, which includes a third housing 210 and four sets of battery assemblies 100 as described in any of the foregoing embodiments. The four sets of battery assemblies 100 are electrically connected to each other and are disposed within the third housing 210 to provide power output to the electronic device. The four sets of battery assemblies 100 are arranged along a second direction c, which is perpendicular to the first direction a.

[0093] The third housing 210 serves as the mounting cabinet for the entire unit, with an overall width of 510mm, a depth of 550mm, and an internal usable installation height of 26U. Each battery pack 100 is assembled from the first housing 110 and the second housing 120, with dimensional tolerances controlled within ±2mm. The first housing 110 has an overall width of 492mm, a depth of 252mm, and a height of 258mm, corresponding to a height of 5.8U. It is made entirely of sheet metal, exhibiting high structural strength and resistance to deformation, with a single pack weighing approximately 60kg. The second housing 120 has an overall width of 492mm, a depth of 296mm, and a height of 258mm, also corresponding to a height of 5.8U, with a dimensional tolerance of ±2mm, and a single pack weighing approximately 58kg.

[0094] Four battery modules 100 are arranged and stacked sequentially along a second direction c perpendicular to the first direction a, inside a third housing 210. The four battery modules 100 are electrically connected via wiring harnesses or other structures, forming a large-capacity combined battery system. The internal space of the third housing 210 is adapted to accommodate the installation of the four battery modules 100, allowing for stable assembly with uniform spacing, neat arrangement, and no redundant space. After assembly, the combined battery module 200 has a total capacity of 1256 Ah, meeting the power supply requirements of devices with a capacity of 1200 Ah or more, and is suitable for power supply conditions in scenarios such as high-power electronic equipment and base station energy storage.

[0095] Therefore, the dimensions of the four battery modules 100 can fit the rack space of the 26U standard third housing 210, greatly improving the internal space utilization of the third housing 210 and solving the problem of wasted space in traditional battery cabinets; and the total capacity after combination can reach 1256Ah, meeting the large capacity power supply demand of 1200Ah, and adapting to a wider range of scenarios; at the same time, the independent modular design can realize rapid assembly and independent maintenance and repair, reducing production assembly costs and maintenance costs.

[0096] Specifically, during assembly, firstly, the first housing 110 is horizontally pushed into the cabinet of the third housing 210 to a semi-assembled position, keeping the first housing 110 in a pre-installed state where it is not fully in place; then, the connecting rod 151 is pre-assembled and installed inside the assembly hole 1511 of the second housing 120, and initially tightened and fixed using assembly tools, so that the connecting rod 151 is stably pre-positioned on the second housing 120; subsequently, the second housing 120 with the connecting rod 151 installed is aligned with the first housing 110 to complete the alignment and insertion, so that the connecting rod 151 extends into the corresponding connecting hole 141 of the first housing 110, and the second housing 110 is slowly pushed. 20 is aligned with the first housing 110; after the connecting rod 151 is fully inserted, the connecting rod 151 is locked again with a tool until the first surface 111 of the first housing 110 and the second surface 123 of the second housing 120 are fully aligned, thus completing the overall assembly and positioning locking of a set of battery components 100; finally, following the assembly sequence from bottom to top in the second direction c, the remaining three sets of battery components 100 are aligned, inserted, locked and attached in sequence according to the same assembly process, finally realizing the integrated modular assembly of four sets of battery components 100 inside the third housing 210.

[0097] Please continue reading. Figure 12 In some embodiments, the third housing 210 is provided with at least four sets of receiving structures 220 arranged along the second direction c. Each set of receiving structures 220 is respectively provided on opposite sides inside the third housing 210 for receiving the corresponding battery assembly 100.

[0098] Specifically, the receiving structure 220 can be configured as symmetrically formed guide receiving grooves on opposite inner walls of the third housing 210 along the third direction b. Four sets of guide receiving grooves are arranged in layers along the second direction c, corresponding one-to-one with the installation positions of the four battery modules 100 inside the third housing 210. Each set of guide receiving grooves can be a concave groove structure, with the left and right sides facing each other in pairs. The width of the groove is adapted to the thickness of the side of the battery module 100's housing, providing a limiting and bearing function for each battery module 100. During the assembly of the battery module 100, the edges of the battery module 100's housing can be smoothly pushed in along the groove walls of the guide receiving grooves, effectively limiting the left and right displacement of the battery module 100 during insertion and ensuring that the battery module 100 is always assembled smoothly in a horizontal direction.

[0099] Meanwhile, the receiving structure 220 provides stable vertical support for the battery module 100, capable of bearing the overall weight of the battery module 100 and preventing the battery module 100 from being suspended and subjected to force during assembly. The four independently configured receiving structures 220 are independent of each other and do not interfere with each other, and can be adapted to the bottom-up assembly process of the four layers of battery modules 100. Each layer of battery module 100 can be independently guided, received, and positioned through the corresponding receiving structure 220.

[0100] Thus, by setting up the support structure 220, the difficulty of assembling and aligning multiple battery modules 100 is reduced, the assembly smoothness and efficiency are improved, and the overall structural strength and vibration resistance of the combined battery module 200 are enhanced. At the same time, the layered support structure 220 allows for individual maintenance of any battery module 100 without disassembling the entire structure.

[0101] Please continue reading. Figure 12 In some embodiments, a heat dissipation gap 230 is formed between two adjacent sets of the receiving structures 220. When the battery components 100 are respectively installed on the corresponding receiving structures 220, the two adjacent sets of battery components 100 are separated by the heat dissipation gap 230.

[0102] The third housing 210 can be configured with a height of 26U, a width of 510mm, and a depth of 550mm. The overall installation height of a single battery module 100 is 5.8U, meaning the third housing 210 can accommodate a maximum of four battery modules 100. After all four battery modules 100 are installed, the total rack height occupied is 4 × 5.8U = 23.2U. The remaining usable height of the third housing 210 is 26U - 23.2U = 2.8U. This remaining height can be evenly distributed among the three battery modules, ultimately creating a uniform and stable heat dissipation gap 230 between adjacent battery modules 100. The heat dissipation gap 230 between a single battery module is approximately 0.9U, corresponding to a physical distance of approximately 41mm, and the gap dimensions are uniform and reasonable.

[0103] Specifically, multiple battery modules 100 are installed layer by layer along the second direction c on the corresponding receiving structure 220. Adjacent battery modules 100 can be completely physically isolated through the heat dissipation gap 230, without contact bonding. This gap space can serve as a natural convection heat dissipation channel for the entire device. The waste heat generated during the operation of the battery cells 130 can be conducted to the gap air layer through the shell surface, thereby forming natural convection and timely dissipating the heat accumulated between layers to the outside, avoiding the problem of heat accumulation and temperature rise between layers when multiple battery modules 100 are working together. At the same time, the uniform inter-module heat dissipation gap 230 can ensure that the heat dissipation conditions of each battery module 100 are basically the same, effectively balancing the overall operating temperature of the four battery modules 100, reducing temperature differences, and helping to improve the consistency of the battery cells and the cycle life of the entire device.

[0104] Please see Figure 13 , Figure 13 The present invention provides a structural block diagram of an electronic device in some embodiments of the present application. In some embodiments, the electronic device 300 includes a device body 310 and a combined battery assembly 200 as described in any of the foregoing embodiments.

[0105] The combined battery module 200 is assembled and integrated inside the electronic device 300. The four electrically connected battery modules 100 inside the combined battery module 200 serve as independent power supply units, which are electrically connected to the load circuit and main control circuit inside the device body 310. They can be used to continuously provide working power to the device body 310, ensuring the stable and uninterrupted operation of the electronic device 300.

[0106] Among them, the combined battery module 200 realizes the orderly layered arrangement of multiple battery modules 100 through the third housing 210 and the layered receiving structure 220, with uniform heat dissipation gaps 230 reserved between the layers, which can effectively control the temperature change of the whole machine during charging and discharging, and is suitable for the long-term continuous working conditions of electronic equipment 300.

[0107] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a particular embodiment can be found in the relevant descriptions of other embodiments. The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, for those skilled in the art, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery assembly, characterized in that, include: A first housing, wherein a first number of battery cells are disposed within the first housing; The second housing contains a second number of battery cells, and also contains a control module and a power conversion module. The control module is used to control the working state of the battery assembly, and the power conversion module is used to realize the power conversion of the battery assembly. The second number is different from the first number. The first housing and the second housing are arranged along a first direction. The first housing further includes a first connecting structure, and the second housing includes a second connecting structure for cooperating with the first connecting structure. The first housing and the second housing are detachably fixed together by being connected through the first connecting structure and the second connecting structure. The first connection structure and / or the second connection structure are provided with a heat dissipation structure and / or a heat absorption structure. The heat dissipation structure is used to conduct and dissipate the heat generated when the battery assembly is working, and the heat absorption structure is used to absorb the heat generated when the battery assembly is working.

2. The battery assembly according to claim 1, characterized in that, The first connecting structure includes one of a connecting rod and a connecting hole, and the second connecting structure includes the other of a connecting rod and a connecting hole. The axial direction of the connecting rod and the extension direction of the connecting hole are parallel to the first direction, and the connecting rod is used to be accommodated in the connecting hole, so that the first housing and the second housing are detachably fixed together.

3. The battery assembly according to claim 2, characterized in that, The connecting hole is a blind hole. The opening of the connecting hole is located on the first surface of the first housing and extends in a direction perpendicular to the first surface. The connecting rod is located on the edge of the second surface of the second housing and extends in a direction perpendicular to the second surface away from the second housing. When the first housing and the second housing are arranged along the first direction and detachably fixed together, the connecting rod is accommodated in the corresponding connecting hole, the first surface of the first housing and the second surface of the second housing are in contact, and the first surface and the second surface are perpendicular to the first direction.

4. The battery assembly according to claim 2, characterized in that, The heat dissipation structure includes a heat sink, which is disposed on the outer surface of the connecting rod in a region away from the inner side of the first housing or the second housing, and / or on the inner surface of the connecting hole in a region away from the inner side of the first housing or the second housing.

5. The battery assembly according to claim 1, characterized in that, The second housing has a detachable panel on the side opposite to the first housing, and the control module and power conversion module are mounted on the detachable panel.

6. The battery assembly according to claim 5, characterized in that, The detachable panel forms the housing wall of the second housing on the side opposite to the first housing, and the control module and power conversion module are disposed on the surface of the detachable panel facing the interior of the second housing.

7. The battery assembly according to claim 5, characterized in that, An interactive component is provided on the surface of the detachable panel that is away from the interior of the second housing. The interactive component is used to realize at least the power transmission, safety protection, status indication operation and communication functions of the battery assembly.

8. The battery assembly according to claim 1, characterized in that, The battery assembly further includes two fixing members, which are used to fix the first number of battery cells in the first housing and the second number of battery cells in the second housing. Each fixing member includes a first fixing member and a second fixing member. The first fixing member is used to bundle the first number of battery cells or the second number of battery cells, and the second fixing member is used to limit the first number of battery cells or the second number of battery cells.

9. The battery assembly according to claim 8, characterized in that, The first fixing member contains a phase change material, which is used to absorb and store the heat generated by the battery cell during operation.

10. The battery assembly according to claim 8, characterized in that, The first fastener is an elastic fastener, which is used to adapt to the volume change of the battery cell during operation, so as to adaptively adjust the binding pre-tightening force on the battery cell.

11. The battery assembly according to claim 3, characterized in that, The connecting rod includes at least a first connecting rod and a second connecting rod, which are respectively disposed on opposite edges of the second surface of the second housing. The connecting hole includes at least a first connecting hole and a second connecting hole, which are respectively disposed on the edges of the first surface of the first housing corresponding to the first connecting rod and the second connecting rod.

12. The battery assembly according to claim 11, characterized in that, The first connecting rod and the second connecting rod have different shapes and / or sizes at the ends away from the second housing, and the first connecting hole and the second connecting hole are respectively configured to have shapes and sizes corresponding to the ends of the first connecting rod and the second connecting rod away from the second housing.

13. A combined battery assembly, used in electronic devices, characterized in that, The device includes a third housing and four sets of battery components as described in any one of claims 1-12, wherein the four sets of battery components are electrically connected to each other and are disposed within the third housing for providing power output to the electronic device, wherein the four sets of battery components are arranged along a second direction, which is perpendicular to the first direction.

14. The combined battery assembly according to claim 13, characterized in that, The third housing is provided with at least four sets of receiving structures arranged along the second direction. Each set of receiving structures is located on opposite sides inside the third housing to receive the corresponding battery assembly.

15. The combined battery assembly according to claim 14, characterized in that, A heat dissipation gap is formed between two adjacent sets of the receiving structures. When the battery components are respectively installed on the corresponding receiving structures, the two adjacent sets of battery components are separated by the heat dissipation gap.

16. An electronic device, characterized in that, It includes the device body and the combined battery assembly as described in any one of claims 13-15.

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