Heat exchange structure, battery pack and electric device

Abstract

The utility model discloses a kind of heat exchange structure, battery pack and electric device, it is related to battery technical field.The heat exchange structure includes: main body shell, the accommodating cavity for accommodating electric core is defined in main body shell, at least two heat exchange flow channels are also defined in main body shell, heat exchange flow channel is spaced apart with accommodating cavity, and heat exchange flow channel is set in the periphery of accommodating cavity;Wherein, main body shell is provided with first confluence groove in first direction at least one end, and first confluence groove is communicated at least two heat exchange flow channels.The heat exchange structure of the utility model embodiment integrates the accommodating cavity of electric core and heat management system, reduces the number of parts, reduces assembly complexity, simultaneously shorten heat transfer path, improve heat exchange efficiency and the accuracy of temperature control.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a heat exchange structure, a battery pack, and an electrical device. Background Technology

[0002] In some existing battery pack structures, liquid cooling pipes are integrated inside the hollow beams of the tray sidewall to achieve thermal management of the battery system. This solution achieves some integration of functions, but the degree of integration is limited. The overall structure still retains components such as the casing and cell modules found in traditional solutions, resulting in a relatively complex overall structure and cumbersome assembly process. Moreover, the heat exchange process of the liquid cooling pipes is no different from that of the traditional cold plate solution, thus causing problems of low heat exchange efficiency and imprecise control.

[0003] Therefore, there is room for improvement in the structure of the battery pack. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the first aspect of the present invention aims to provide a heat exchange structure that integrates the housing of the battery cell with a thermal management system, reducing the number of parts, lowering assembly complexity, and simultaneously shortening the heat transfer path, thereby improving heat exchange efficiency and temperature control accuracy.

[0005] The second aspect of this utility model aims to provide a battery pack having the above-mentioned heat exchange structure.

[0006] The objective of the third aspect of this utility model is to provide an electrical device having the aforementioned battery pack.

[0007] A heat exchange structure according to a first aspect embodiment of the present invention includes: a main shell, wherein a receiving cavity for accommodating a battery cell is defined within the main shell, and at least two heat exchange channels are further defined within the main shell, the heat exchange channels being spaced apart from the receiving cavity and arranged around the periphery of the receiving cavity; wherein the main shell has a first confluence groove at at least one end in a first direction, the first confluence groove connecting at least two of the heat exchange channels.

[0008] According to the heat exchange structure of this utility model embodiment, by integrating the cell housing cavity and the heat exchange channel into the same main shell, the heat conduction path is shortened, and the heat exchange efficiency of the cell is improved. By setting a first confluence groove on the main shell to achieve the distribution and convergence of the cooling medium, the temperature uniformity and control accuracy of the thermal management system in different areas of the battery pack are improved. The heat exchange structure of this embodiment simplifies the assembly process of independent components such as cold plates and housings in traditional battery packs, facilitating modular design of the battery pack.

[0009] According to some optional heat exchange structures of this utility model, it further includes: a flow collector plate, which is disposed at the end of the main body shell where the first flow collector groove is provided, and the flow collector plate is provided with a second flow collector groove that is fastened to at least part of the first flow collector groove, and the first flow collector groove and the second flow collector groove together form a flow collection channel.

[0010] Furthermore, the collector plate is provided with a through hole that connects to the second confluence channel, and the through hole is at least one of the inlet and outlet of the confluence channel.

[0011] Furthermore, the main body shell has a first assembly port at at least one end in the first direction, the first assembly port is connected to the receiving cavity, and the flow collector plate has a second assembly port corresponding to the first assembly port.

[0012] Further optionally, it also includes: a first fastener connected between the main body shell and the manifold.

[0013] According to some optional embodiments of the heat exchange structure, the side of the main shell is provided with at least one first mounting ear, the collector plate is provided with a first connecting hole corresponding to the first mounting ear, and the first fastener passes through and connects the first connecting hole and the first mounting ear.

[0014] In some alternative embodiments, it further includes a first seal sandwiched between the main housing and the manifold.

[0015] Specifically, there are at least two receiving cavities spaced apart along the second direction, and at least one heat exchange channel is evenly distributed around the periphery of each receiving cavity. The end of the main shell is provided with the first confluence groove corresponding to each receiving cavity, and the first confluence groove is arranged around the receiving cavity. The flow collector plate is provided with at least two second confluence grooves, and each second confluence groove is arranged in a one-to-one correspondence with the first confluence groove.

[0016] Specifically, two adjacent first manifolds are connected, and two adjacent second manifolds are connected.

[0017] In some alternative embodiments, it further includes: a first seal sandwiched between the main body shell and the manifold, the first seal comprising: a first sealing outer ring disposed along the edge of the manifold; and at least two first sealing inner rings corresponding to each other surrounding the periphery of the receiving cavity.

[0018] According to some optional embodiments of the present invention, there are at least two main shells, and the at least two main shells are spliced ​​together along the first direction; the receiving cavities on two adjacent main shells are arranged in a one-to-one correspondence so that the battery cells in the two receiving cavities can be electrically connected.

[0019] In some optional embodiments, the main body shell is provided with the first confluence groove at both ends in the first direction, and each end of each heat exchange channel on the main body shell is connected to a first confluence groove; the opposing first confluence grooves on two adjacent main bodies shells enclose a middle channel.

[0020] Optionally, the system further includes a second fastener connected between two adjacent body shells.

[0021] Further optionally, each of the main body shells is provided with at least one pair of the first mounting ears on its side, and the two first mounting ears in each pair are arranged at intervals along the first direction; the second fastener is connected between the two adjacent first mounting ears of two adjacent main body shells.

[0022] According to some specific embodiments, the heat exchange structure further includes a second seal, which is sandwiched between two adjacent main shells.

[0023] Optionally, the heat exchange structure further includes a connecting component located between two adjacent main shells and corresponding to the receiving cavity; the connecting component is used to electrically connect with two battery cells arranged along the first direction.

[0024] Specifically, the connection component may include: a male terminal piece for connecting to the terminal of one of the battery cells, the male terminal piece having a protruding ring and a slot enclosing the protruding ring; and a female terminal piece for connecting to the terminal of another of the battery cells, the female terminal piece having a plug inserted into the slot.

[0025] According to some optional embodiments of the present invention, each main body shell is provided with at least two receiving cavities arranged at intervals along the second direction, and at least one heat exchange flow channel is evenly distributed around the periphery of each receiving cavity. Each receiving cavity is provided through at both ends along the first direction, and the receiving cavities on two adjacent main body shells are provided in a one-to-one correspondence.

[0026] A battery pack according to a second aspect embodiment of the present invention includes: a tray, a heat exchange structure, and a battery cell, wherein the heat exchange structure is disposed on the tray; and the battery cell is located within the receiving cavity. The heat exchange structure is the same as that described in the first aspect embodiment of the present invention.

[0027] Further optionally, the side of the main body shell is provided with at least one second mounting ear, the second mounting ear is provided with a first positioning hole, and the tray is provided with a positioning post or a second positioning hole corresponding to the first positioning hole.

[0028] The electrical device according to a third aspect of the present invention includes the battery pack according to a second aspect of the present invention.

[0029] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a schematic diagram of the main shell structure in some embodiments of this utility model;

[0032] Figure 2 This is a schematic diagram showing the position of the battery cell in the main body shell in some embodiments of this utility model;

[0033] Figure 3 This is a schematic diagram showing the cooperation between the main shell, the first sealing element, and the manifold in some embodiments of this utility model;

[0034] Figure 4 This is a schematic diagram of the current collector plate in some embodiments of this utility model;

[0035] Figure 5 This is a schematic diagram showing the position of the second confluence groove in the confluence plate in some embodiments of this utility model;

[0036] Figure 6 This is an exploded view of the battery pack in some embodiments of the present invention;

[0037] Figure 7 This is a cross-sectional view of the battery pack in some embodiments of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the connecting component in some embodiments of the present invention.

[0039] Figure label:

[0040] Battery pack 100

[0041] Heat exchange structure 10

[0042] Main body shell 11, receiving cavity 111, heat exchange channel 112, first manifold 113, first mounting ear 114, second mounting ear 115, first positioning hole 1151.

[0043] 14-channel manifold, 141-channel groove, 142-channel hole, 143-channel assembly port, 144-channel connecting hole

[0044] Convergence channel 151, intermediate channel 152

[0045] First assembly port 16

[0046] First fastener 171, second fastener 172

[0047] First sealing element 181, first sealing outer ring 1811, first sealing inner ring 1812, second sealing element 182

[0048] Connecting component 19, male end piece 191, protruding ring 1911, slot 1912, female end piece 192, pin 1921.

[0049] Pallet 30, Positioning Post 31

[0050] Battery cell 50. Detailed Implementation

[0051] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0052] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "top," "bottom," "inner," "outer," and "axial," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0055] The following is for reference. Figures 1-8 The heat exchange structure 10 according to a first aspect embodiment of the present invention is described.

[0056] like Figures 1-2 As shown, the heat exchange structure 10 according to an embodiment of the present invention includes: a main shell 11, and a receiving cavity 111 for accommodating the battery cell 50 is defined inside the main shell 11.

[0057] Optionally, the main body shell 11 has one or more receiving cavities 111 inside to directly accommodate different numbers of battery cells 50.

[0058] Optionally, the shape of the receiving cavity 111 can be adapted to the shape of the battery cell 50. For example, the shape of the receiving cavity 111 can be cylindrical, square, etc. When the receiving cavity 111 is cylindrical, the battery cell 50 roll directly contacts the receiving cavity 111 of the main body shell 11 and naturally forms a group. Preferably, the receiving cavity 111 consists of multiple cavities arranged in parallel to achieve the integrated arrangement of multiple battery cells 50.

[0059] At least two heat exchange channels 112 are defined within the main body shell 11. The heat exchange channels 112 are used to exchange heat with the battery cell 50 within the receiving cavity 111. In this embodiment, the receiving cavity 111 of the battery cell 50 and the heat exchange channels 112 are integrated into the same main body shell 11, eliminating multiple components such as independent cold plates and housings in traditional solutions, greatly simplifying the internal structure, reducing assembly processes, improving production efficiency, and at the same time reducing the possibility of component loosening, thereby improving the reliability of the battery pack 100.

[0060] The heat exchange channel 112 is spaced apart from the receiving cavity 111, and the heat exchange channel 112 surrounds the receiving cavity 111. Here, the heat exchange channel 112 and the receiving cavity 111 are respectively formed on the main body shell 11 and are arranged adjacently to form a spaced distribution. This allows the heat generated by the battery cell 50 to be quickly conducted to the heat exchange channel 112 through the material of the main body shell 11, thereby forming an efficient and short heat conduction channel and improving the heat exchange efficiency of the battery cell 50. Compared with the traditional battery pack 100 structure, which usually uses an independent cold plate attached to the bottom or side of the module for indirect cooling, the heat exchange structure 10 provided by this utility model directly surrounds the battery cell 50 with the heat exchange channel 112, which greatly shortens the heat transfer path, reduces the thermal resistance, and avoids the problem of uneven heat exchange caused by poor contact between the cold plate and the battery cell 50. In addition, the heat exchange structure 10 of this embodiment also eliminates the cold plate structure in the traditional solution, further improving the system integration and space utilization of the battery pack 100 and optimizing the performance of the battery pack 100.

[0061] Optionally, the two spaced-apart heat exchange channels 112 can surround the same receiving cavity 111 or surround different receiving cavities 111. The specific arrangement of the heat exchange channels 112 can be adjusted according to the arrangement of the battery cells 50 and thermal management requirements, and this application does not impose any restrictions. Further, the two heat exchange channels 112 are independent of each other and not interconnected. This arrangement avoids the need to open perforations or connecting channels in the partition wall of the main shell 11, thereby preserving the integrity and structural strength of the partition wall. This allows the partition wall to maintain sufficient mechanical load-bearing capacity and sealing reliability while ensuring thermal conductivity, further improving the reliability of the battery pack 100.

[0062] The main body shell 11 has a first confluence channel 113 at at least one end in the first direction, and the first confluence channel 113 connects at least two heat exchange channels 112. The first confluence channel 113 is used to concentrate and distribute the cooling medium, improve the flow uniformity of the cooling medium in the heat exchange channels 112, and thus help to improve the temperature uniformity inside the battery pack 100.

[0063] In some optional embodiments, there is at least one receiving cavity 111, and a first manifold 113 is provided at the end of the receiving cavity 111. This arrangement is beneficial for processing and forming, and also avoids the opening of flow channel structures in the main body of the main body shell 11, thereby preserving the structural integrity of the main body, improving the overall strength and reliability, and thus helping to provide better mechanical protection for the battery cell 50.

[0064] Optionally, the first manifold 113 is disposed on the end face of the main body shell 11 and achieves a sealed connection by cooperating with the collector plate 14. This arrangement facilitates assembly and maintenance and is conducive to modular design. Alternatively, the first manifold 113 achieves a sealed connection between the heat exchange channels 112 by mating with another main body shell 11. This arrangement is suitable for connecting multiple main body shells 11, thereby increasing the number of cells 50 and improving the energy density of the battery pack 100. Alternatively, the first manifold 113 is directly disposed inside the main body shell 11, and the first manifold 113 is a pre-encapsulated embedded channel. This eliminates the need for an additional sealing structure, further improving the reliability of the overall structure.

[0065] In summary, the heat exchange structure 10 of this embodiment integrates the housing 111 of the battery cell 50 and the thermal management system within the same main housing 11, achieving a high degree of structural integration. This effectively simplifies the internal structure, reduces assembly processes, and improves overall manufacturing efficiency. Simultaneously, it results in a compact overall structure and more stable connections between components, thereby enhancing the safety and reliability of the battery pack 100.

[0066] Combination Figures 3-5 According to some optional embodiments of the present invention, the heat exchange structure 10 further includes: a flow collector 14, which is disposed at the end of the main body shell 11 where a first flow collector 113 is provided, and a second flow collector 141 is provided on the flow collector 14 and fastened to at least part of the first flow collector 113, wherein the first flow collector 113 and the second flow collector 141 enclose a flow channel 151.

[0067] In the above technical solution, the second confluence groove 141 on the manifold 14 and the first confluence groove 113 on the main body shell 11 cooperate to form a closed confluence channel 151, in which the cooling medium can flow.

[0068] This configuration integrates the cooling channels, which originally required multiple external pipeline connections, into the space between the main body shell 11 and the collector plate 14, reducing the number of external connectors, which helps to improve the overall structural compactness. At the same time, it reduces assembly difficulty and facilitates the modular design of the battery pack 100.

[0069] Optionally, the manifold 14 and the main housing 11 are detachably connected. When the heat exchange structure 10 needs to be repaired or replaced, only the manifold 14 needs to be removed to inspect or clean the first manifold 113 and the second manifold 141, thus improving the maintainability of the heat exchange structure 10.

[0070] Optionally, the shape and size of the confluence channel 151 formed by the first confluence channel 113 and the second confluence channel 141 are not limited, and can be adjusted according to the heat load distribution of the battery pack 100. For example, in areas of the battery pack 100 where heat is concentrated, the cross-sectional area of ​​the confluence channel 151 corresponding to that area can be appropriately increased to improve the flow rate and heat exchange capacity of the cooling medium, thereby achieving localized enhanced heat dissipation; while in areas with relatively low temperatures, the size of the confluence channel 151 can be reduced accordingly. This arrangement helps to achieve a uniform distribution of the internal temperature field of the battery pack 100, thereby improving the performance of the battery pack 100.

[0071] In some alternative embodiments, please continue to combine Figure 4 and Figure 5 The manifold 14 is provided with a through hole 142 that connects to the second manifold 141. The through hole 142 is at least one of the inlet and outlet of the manifold channel 151.

[0072] In this embodiment, the inlet and / or outlet of the confluence channel 151 are set on the manifold 14, so that the cooling medium can be connected to the external circulation system through the inlet and / or outlet to realize the introduction and export of the cooling medium.

[0073] At the same time, this design avoids the need to make perforations on the main body shell 11, thereby maintaining the overall structural integrity and mechanical properties of the main body shell 11, preventing the weakening of strength caused by local openings, and thus improving the safety and durability of the battery pack 100 structure.

[0074] Furthermore, the heat exchange structure 100 includes two manifolds 14, which are spaced apart at both ends of the main body shell 11 along a second direction. One manifold 14 has a through-hole 142 as an inlet, and the other manifold 14 has a through-hole 142 as an outlet. In this way, the cooling medium enters from the inlet of one manifold, undergoes heat exchange through the heat exchange channel 112 within the main body shell, and finally flows out from the outlet of the other manifold, completing one heat exchange cycle.

[0075] Further, optionally, combined Figures 3-5 The main body shell 11 has a first assembly port 16 at at least one end in the first direction, the first assembly port 16 is connected to the receiving cavity 111, and the flow collector 14 has a second assembly port 143 corresponding to the first assembly port 16.

[0076] The first assembly port 16 on the main housing 11 is mainly used for the installation of the battery cell 50, allowing the battery cell 50 to be installed into the receiving cavity 111 along the first direction. The second assembly port 143 on the current collector 14 provides an assembly channel for external connectors (such as electrical connectors, fastening bolts, etc.) or detection elements (such as temperature sensors, voltage sampling lines). This design not only improves overall assembly efficiency but also facilitates electrical connections and signal acquisition between battery cells.

[0077] In addition, the first assembly port 16 and the second assembly port 143 can be aligned and connected during the assembly process to form a complete operating channel. After the assembly is completed, they are sealed by a sealing cover or connector to ensure the sealing and safety of the internal environment of the battery pack 100.

[0078] In some alternative embodiments, such as Figure 6 As shown, the heat exchange structure 10 also includes a first fastener 171, which is connected between the main body shell 11 and the manifold 14.

[0079] By setting the first fastener 171, a fixed connection is achieved between the main shell 11 and the collector plate 14, ensuring a tight fit between the two and thus guaranteeing the stability of the heat exchange structure 10. Optionally, the first fastener 171 can be a bolt, screw, etc.

[0080] The connection via the first fastener 171 simplifies the heat exchange structure 10, making assembly easier and eliminating the need for complex welding, thus improving production efficiency and ease of maintenance. Simultaneously, the detachable fastening connection facilitates modular design, allowing for easy replacement or repair of local components, enhancing overall flexibility and reliability.

[0081] Further optional, such as Figure 6 As shown, the side of the main body shell 11 is provided with at least one first mounting ear 114, and the manifold 14 is provided with a first connecting hole 144 corresponding to the first mounting ear 114. The first fastener 171 passes through and connects the first connecting hole 144 and the first mounting ear 114.

[0082] In the above technical solution, by providing a first mounting ear 114 on the main body shell 11 and a corresponding first connecting hole 144 on the collector plate 14, and locking it with a first fastener 171, the assembly method has a simple structure and high connection strength, which can ensure that the main body shell 11 and the collector plate 14 fit tightly together.

[0083] First, this method eliminates the need for complex processes like welding to complete the connection, simplifying the assembly process. Second, this assembly method also facilitates disassembly, making it easier to remove, inspect, or replace the current collector 14 later, thereby improving the maintainability of the battery pack 100 and reducing maintenance costs.

[0084] like Figure 6 As shown, in some alternative embodiments, the heat exchange structure 10 further includes a first seal 181 sandwiched between the main housing 11 and the manifold 14.

[0085] By setting a seal between the main shell 11 and the manifold 14, the airtightness of the manifold 151 can be effectively improved, preventing leakage of the cooling medium during operation, thereby improving the working reliability of the entire heat exchange structure 10.

[0086] Meanwhile, the first seal 181 also plays a certain buffering role, providing appropriate elastic compensation between the main shell 11 and the manifold 14, avoiding excessive stress caused by rigid connection, and further enhancing the connection stability and durability of the heat exchange structure 10.

[0087] In addition, the first seal 181 can also absorb the impact force of the heat exchange structure 10 during use to a certain extent, thereby improving the vibration resistance and service life of the heat exchange structure 10.

[0088] Optionally, combined Figure 1 and Figure 5 The housing cavities 111 are at least two and spaced apart along the second direction. Each housing cavity 111 has at least one heat exchange channel 112 evenly distributed around its periphery. The end of the main shell 11 is provided with a first confluence groove 113 corresponding to each housing cavity 111, and the first confluence groove 113 is arranged around the housing cavity 111. The flow collector plate 14 is provided with at least two second confluence grooves 141, and each second confluence groove 141 is arranged in a one-to-one correspondence with the first confluence groove 113.

[0089] Here, when there are multiple accommodating cavities 111, the heat exchange channels 112 around each accommodating cavity 111 can form a confluence channel 151 through their respective first confluence channel 113 and second confluence channel 141, thereby realizing the flow of cooling medium and realizing heat exchange at different positions of the battery pack 100.

[0090] In some specific embodiments, two adjacent first manifolds 113 are connected, and two adjacent second manifolds 141 are connected.

[0091] This configuration allows the cooling medium to flow and communicate between multiple confluence channels 151, thereby optimizing the distribution path of the cooling medium throughout the heat exchange structure 10. This interconnected configuration balances the flow rate of the cooling medium between different areas, preventing localized overheating or uneven cooling, and further improving the uniformity and controllability of the internal temperature field of the battery pack 100.

[0092] Specifically, optionally, in combination Figure 3 and Figure 6The heat exchange structure 10 further includes a first seal 181, which is sandwiched between the main body shell 11 and the manifold 14. The first seal 181 includes a first sealing outer ring 1811 and at least two first sealing inner rings 1812. The first sealing outer ring 1811 is disposed along the edge of the manifold 14. The at least two first sealing inner rings 1812 are correspondingly arranged around the periphery of the receiving cavity 111.

[0093] In the above technical solution, the first sealing outer ring 1811 is arranged along the edge of the manifold 14. It is located in the outer connection area between the main body shell 11 and the manifold 14, which can prevent the cooling medium from leaking from the edge of the structure and ensure that the cooling medium flows normally in the designated confluence channel 151. At the same time, the first sealing element 181 also plays a certain role in buffering, absorbing stress, and improving the sealing performance and durability of the structure.

[0094] Correspondingly, at least two first sealing inner rings 1812 are arranged around the periphery of each receiving cavity 111, in the area between the first manifold 113 and the receiving cavity 111, thereby enhancing the sealing effect between the heat exchange channel 112 and the manifold 151, preventing cross-flow or leakage of the cooling medium, and ensuring the functional stability of each cell 50 area. In this way, the sealing effect of the entire heat exchange structure 10 is improved through the coordinated sealing of inner and outer rings, and the adaptability and long-term operational stability of the heat exchange structure 10 are also enhanced.

[0095] According to some optional embodiments of the present invention, refer to Figure 6 There are at least two main shells 11, which are spliced ​​together along a first direction. The receiving cavities 111 on two adjacent main shells 11 are arranged in a one-to-one correspondence so that the battery cells 50 in the two receiving cavities 111 can be electrically connected.

[0096] In this embodiment, the receiving cavities 111 on two adjacent main shells 11 are arranged in a one-to-one correspondence, which means that the receiving positions of the battery cells 50 in each main shell 11 are spatially aligned with each other, so that when multiple main shells 11 are assembled, the battery cells 50 in adjacent receiving cavities 111 can be electrically connected through external connection structures (such as conductive sheets, connection terminals, etc.).

[0097] This modular design enhances the scalability and flexibility of the battery pack 100 structure, and allows for flexible configuration of the number of main shells 11 according to different capacity requirements, thus adapting to various battery packs 100 or electrical devices. Furthermore, since all main shells 11 have the same structure, standardized production and unified assembly processes are facilitated, reducing manufacturing costs and maintenance difficulties.

[0098] Therefore, this embodiment not only improves the structural integration, but also facilitates the expansion and flexible configuration of the heat exchange structure 10.

[0099] In some further optional embodiments, the main body shell 11 is provided with a first confluence groove 113 at both ends in the first direction, and each end of each heat exchange channel 112 on the main body shell 11 is connected to a first confluence groove 113. The opposing first confluence grooves 113 on two adjacent main body shells 11 enclose a middle channel 152.

[0100] The cooling medium flows through the manifold 151 to the heat exchange channel 112, completing the heat exchange of the battery cell 50 inside one main housing 11. It then flows through the intermediate channel 152 between adjacent main housings 11 to the heat exchange channel 112 in the next main housing 11, thus achieving continuous conduction of the cooling medium between the heat exchange channels 112 of different main housings 11. This facilitates the continuity and uniformity of battery heat exchange.

[0101] Furthermore, each main shell 11 is an independent unit with integrated structure and function. Specifically, each main shell 11 has an internal receiving cavity 111, a heat exchange channel 112, and first confluence slots 113 at both ends. When it is necessary to increase the battery capacity or extend the length of the battery pack 100, multiple main shells 11 are simply spliced ​​together in sequence along the first direction, and the corresponding first confluence slots 113 between adjacent main shells 11 are connected to form an intermediate channel 152, thereby enabling continuous flow of the cooling medium between the modules.

[0102] Meanwhile, the end of the main housing 11 can cooperate with the collector plate 14 to form a confluence channel 151 at the end for the introduction or recovery of the cooling medium. This modular connection method is not only simple in structure and easy to assemble, but also supports standardized production and flexible configuration, making it easy to adjust the heat exchange structure 10 inside the battery pack 100 according to different needs. Moreover, when a main housing 11 fails, it can be disassembled and replaced individually without replacing the whole unit, thereby improving the convenience of maintenance and reducing maintenance costs.

[0103] Further optional, refer to Figure 6 The heat exchange structure 10 also includes a second fastener 172, which is connected between two adjacent main body shells 11.

[0104] Here, the second fastener 172 is used to fix the two adjacent main shells 11 spliced ​​along the first direction. By setting the second fastener 172, the structural stability and connection reliability between the multiple main shells 11 can be effectively guaranteed.

[0105] Meanwhile, the assembly method using the second fastener 172 for connection is simple in structure and easy to operate. It can achieve high-strength connection without complicated welding or other methods, which is conducive to improving assembly efficiency and product consistency.

[0106] In addition, the second fastener 172 facilitates disassembly, making it easy to remove or replace individual main housings 11 during maintenance or inspection, thereby improving the maintainability and flexibility of the entire battery pack 100.

[0107] In some specific embodiments, such as Figures 1-3 and Figure 6 As shown, each main body shell 11 has at least one pair of first mounting ears 114 on its side, and the two first mounting ears 114 in each pair are arranged at intervals along a first direction. A second fastener 172 connects two adjacent first mounting ears 114 of two adjacent main body shells 11.

[0108] When there are multiple main housings 11, they can be interconnected via first mounting ears 114 on their respective sides. Specifically, after the first mounting ears 114 on adjacent main housings 11 are aligned, they are secured by second fasteners 172, thus completing the structural splicing and fixing of multiple modules. This connection method is not only simple in structure and convenient in operation, but also ensures the stability and strength of the connection between modules, which is conducive to realizing the expansion design of the battery pack 100 and improving the integration and assembly efficiency of the overall system. At the same time, it also facilitates later maintenance and replacement of individual modules, further enhancing the flexibility and applicability of the battery system.

[0109] like Figure 3 , Figure 6 and Figure 7 As shown, according to some optional heat exchange structures 10, it also includes: a second seal 182, the second seal 181 being sandwiched between two adjacent main body shells 11.

[0110] The second seal 182 is used to seal the connection interface between the two main housings 11, preventing the cooling medium from leaking from the intermediate channel 152 and improving the sealing reliability of the intermediate channel 152.

[0111] In addition, the second seal 182 can also absorb the deformation stress caused by assembly errors, temperature changes or mechanical vibrations between the main shells 11 to a certain extent, playing a buffering and compensation role, and further enhancing the stability and durability of the structural connection.

[0112] Here, the use of the second seal 182 in conjunction with the second fastener 172 can ensure that the connection between adjacent main shells 11 is both firm and sealed while ensuring the continuity of the cooling medium flow, thereby improving the reliability of the battery pack 100.

[0113] In some further alternative embodiments, such as Figure 8As shown, the heat exchange structure 10 also includes a connecting assembly 19, which is located between two adjacent main shells 11 and is disposed corresponding to the receiving cavity 111. The connecting assembly 19 is used for electrical connection with two battery cells 50 arranged along the first direction.

[0114] Specifically, when multiple main shells 11 are sequentially spliced ​​together along the first direction to form an overall battery pack 100, the battery cells 50 in each main shell 11 are arranged along the first direction, and adjacent battery cells 50 are connected by a connecting component 19 disposed between them.

[0115] Optionally, the connecting component 19 includes conductive elements such as conductive sheets and connecting terminals.

[0116] Optionally, the connection component 19 includes a male terminal 191 and a female terminal 192. Through the cooperation of the male terminal 191 and the female terminal 192, a fast and reliable electrical connection is achieved between two adjacent battery cells 50.

[0117] The male terminal 191 is used to connect to the terminal of a battery cell 50. The male terminal 191 has a protruding ring 1911, and a slot 1912 is formed inside the protruding ring 1911. The female terminal 192 is used to connect to the terminal of another battery cell 50. The female terminal 192 has a plug 1921, which is inserted into the slot 1912.

[0118] During assembly, the insert post 1921 is aligned and inserted into the slot 1912 to achieve conductivity between the male end piece 191 and the female end piece 192, thereby completing the electrical connection between adjacent cells 50. This mating method is convenient for insertion and removal, provides stable contact, and has good vibration resistance. At the same time, the connecting assembly 19 can also eliminate the welding process between adjacent cells 50, improving production cycle time and yield.

[0119] Alternatively, each main housing 11 may have at least two receiving cavities 111 spaced apart along the second direction. Multiple receiving cavities 111 may be provided in each main housing 11 to install multiple battery cells 50, thereby increasing the energy density of the battery pack 100.

[0120] Each housing cavity 111 has at least one heat exchange channel 112 evenly distributed around its periphery. These heat exchange channels 112 are distributed around the housing cavity 111 and are used to exchange heat with the battery cells 50 in each housing cavity 111, thereby achieving precise control of the temperature of the battery pack 100.

[0121] Each receiving cavity 111 is through-hole at both ends along the first direction, and the receiving cavities 111 on two adjacent main shells 11 are arranged in a one-to-one correspondence. This through-hole structure allows the battery cells 50 in adjacent main shells 11 to be directly connected in the axial direction, which facilitates the electrical connection between the battery cells 50. This arrangement helps to improve the compactness of the battery cell arrangement 50 inside the battery pack 100, and also helps to further improve the energy density of the battery pack 100.

[0122] like Figure 6 As shown, a battery pack 100 according to a second aspect embodiment of the present invention includes: a tray 30, a heat exchange structure 10, and a battery cell 50. The heat exchange structure 10 is disposed on the tray 30. The battery cell 50 is located within a receiving cavity 111. Here, the heat exchange structure 10 is the same as that of the first aspect embodiment of the present invention.

[0123] In this embodiment, the battery pack 100 utilizes an improved heat exchange structure 10 to integrate the housing and thermal management of the battery cell 50, simplifying the internal structure of the battery pack 100, improving heat exchange efficiency and temperature control accuracy, thereby further enhancing the safety and overall performance of the battery pack 100.

[0124] According to some alternative embodiments of the battery pack 100, combined with Figure 7 The main body shell 11 has at least one second mounting ear 115 on its side, and the second mounting ear 115 has a first positioning hole 1151. The tray 30 has a positioning post 31 or a second positioning hole corresponding to the first positioning hole 1151.

[0125] In some optional embodiments, the tray 30 is provided with positioning pins 31 corresponding to the first positioning hole 1151. By inserting the positioning pins 31 into the first positioning hole 1151, rapid positioning and fixed assembly between the main body shell 11 and the tray 30 can be achieved. This connection structure helps to improve the assembly efficiency and connection reliability of the main body shell 11 and the tray 30.

[0126] In some alternative embodiments, the tray 30 is provided with a second positioning hole corresponding to the first positioning hole 1151, and a fastening bolt is used to pass through the first positioning hole 1151 and the second positioning hole to achieve a fixed connection between the main body shell 11 and the tray 30.

[0127] The electrical device according to a third aspect of the present invention includes a battery pack 100 according to a second aspect of the present invention.

[0128] By adopting the improved battery pack 100, the safety and reliability of the electrical device can be improved.

[0129] The following is for reference. Figure 1 - Figure 8The battery pack 100 according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0130] Reference Figure 2 , Figure 3 and Figure 6 The battery pack 100 includes: a heat exchange structure 10, a tray 30, and a battery cell 50.

[0131] The heat exchange structure 10 is located on the tray 30.

[0132] Reference Figure 6 The heat exchange structure 10 includes: a main shell 11, a manifold 14, a first fastener 171, a first seal 181, a second fastener 172, a second seal 182, and a connecting assembly 19.

[0133] Reference Figure 7 There are at least two main shells 11, and at least two main shells 11 are spliced ​​together along the first direction.

[0134] The main body shell 11 defines a receiving cavity 111 and a heat exchange flow channel 112. The battery cell 50 is located in the receiving cavity 111. Each receiving cavity 111 is provided through at both ends along the first direction, and the receiving cavities 111 on two adjacent main body shells 11 are provided in a one-to-one correspondence so that the battery cells 50 in two adjacent receiving cavities 111 can be electrically connected.

[0135] Each main shell 11 includes a plurality of receiving cavities 111 spaced apart along the second direction, and heat exchange channels 112 are evenly distributed around the periphery of each receiving cavity 111, with the heat exchange channels 112 spaced apart from the receiving cavity 111.

[0136] When multiple main shells 11 are arranged along the second direction, the main shell 11 located at the end of the second direction is provided with a first confluence groove 113 corresponding to each receiving cavity 111 at its end. The first confluence groove 113 is arranged around the receiving cavity 111 and is connected to the heat exchange channel 112.

[0137] A manifold 14 is located at the end of the main shell 11 where a first manifold 113 is provided. The manifold 14 has a second manifold 141 that is fastened to the first manifold 113. The first manifold 113 and the second manifold 141 together form a manifold channel 151. Here, adjacent first manifolds 113 are connected, and adjacent second manifolds 141 are also connected.

[0138] Reference Figure 4 and Figure 5 The manifold 14 is provided with a through hole 142 that connects to the second manifold 141. The through hole 142 includes the inlet and outlet of the manifold channel 151.

[0139] The main body shell 11 has a first assembly port 16 at one end in the first direction, which is connected to the receiving cavity 111. The manifold 14 has a second assembly port 143 corresponding to the first assembly port 16.

[0140] The first fastener 171 is connected between the main body shell 11 and the manifold 14.

[0141] The main body shell 11 has a first mounting ear 114 on its side, and the collector plate 14 has a first connecting hole 144 corresponding to the first mounting ear 114. The first fastener 171 passes through and connects the first connecting hole 144 and the first mounting ear 114.

[0142] The first seal 181 is sandwiched between the main body shell 11 and the manifold 14.

[0143] The first sealing element 181 includes a first sealing outer ring 1811 and two first sealing inner rings 1812. The first sealing outer ring 1811 is disposed along the edge of the manifold 14. The first sealing inner rings 1812 are respectively arranged around the periphery of the receiving cavity 111.

[0144] The main body shell 11 is provided with a first confluence groove 113 at both ends in the first direction, and each end of each heat exchange channel 112 on the main body shell 11 is connected to a first confluence groove 113.

[0145] In the second direction, the main body shell 11 located in the middle position is positioned opposite to its adjacent main body shell 11, and the first confluence grooves 113 on both are connected to each other, together forming a middle channel 152. The second fastener 172 is connected between these two adjacent main body shells 11.

[0146] Each main body shell 11 has a pair of first mounting ears 114 on its side, and the two first mounting ears 114 in each pair are arranged at intervals along the first direction.

[0147] A second fastener 172 is connected between two adjacent first mounting ears 114 of two adjacent main shells 11.

[0148] The second seal 182 is sandwiched between two adjacent main shells 11.

[0149] The connecting assembly 19 is located between two adjacent main housings 11 and is provided corresponding to the receiving cavity 111. The connecting assembly 19 is used for electrical connection with two battery cells 50 arranged along the first direction.

[0150] Reference Figure 1 and Figure 8The connecting assembly 19 includes a male terminal 191 and a female terminal 192. The male terminal 191 is used to connect to the terminal of a battery cell 50, and the male terminal 191 has a protruding ring 1911, which encloses a slot 1912. The female terminal 192 is used to connect to the terminal of another battery cell 50, and the female terminal 192 has a plug 1921, which is inserted into the slot 1912.

[0151] Other components of the battery pack 100 according to the present invention, such as the power supply device and its operation, are known to those skilled in the art and will not be described in detail here.

[0152] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0153] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchange structure, characterized in that, include: The main body shell defines a receiving cavity for accommodating the battery cell, and the main body shell also defines at least two heat exchange channels, which are spaced apart from the receiving cavity and are arranged around the periphery of the receiving cavity. The main shell has a first confluence channel at at least one end in a first direction, and the first confluence channel connects to at least two heat exchange channels.

2. The heat exchange structure according to claim 1, characterized in that, Also includes: A flow collector plate is provided at the end of the main shell where the first flow collector groove is located. The flow collector plate is provided with a second flow collector groove that is fastened to at least part of the first flow collector groove. The first flow collector groove and the second flow collector groove together form a flow collection channel.

3. The heat exchange structure according to claim 2, characterized in that, The collector plate is provided with a through hole that connects to the second confluence channel, and the through hole is at least one of the inlet and outlet of the confluence channel.

4. The heat exchange structure according to claim 2, characterized in that, The main body shell has a first assembly port at at least one end in the first direction, the first assembly port is connected to the receiving cavity, and the collector plate has a second assembly port corresponding to the first assembly port.

5. The heat exchange structure according to claim 2, characterized in that, Also includes: A first fastener is connected between the main body shell and the manifold.

6. The heat exchange structure according to claim 5, characterized in that, The main body shell has at least one first mounting ear on its side, and the collector plate has a first connecting hole corresponding to the first mounting ear. The first fastener passes through and connects the first connecting hole and the first mounting ear.

7. The heat exchange structure according to claim 2, characterized in that, Also includes: A first seal is sandwiched between the main body shell and the manifold.

8. The heat exchange structure according to any one of claims 2-6, characterized in that, The accommodating cavities are at least two and spaced apart along the second direction. Each accommodating cavity has at least one heat exchange channel evenly distributed around its periphery. The end of the main shell is provided with the first confluence groove corresponding to each accommodating cavity, and the first confluence groove is arranged around the accommodating cavity. The collector plate is provided with at least two second collector slots, and each second collector slot is configured to correspond one-to-one with the first collector slot.

9. The heat exchange structure according to claim 8, characterized in that, Two adjacent first manifolds are connected, and two adjacent second manifolds are connected.

10. The heat exchange structure according to claim 9, characterized in that, Also includes: A first seal, sandwiched between the main housing and the manifold, comprises: A first sealing outer ring is disposed along the edge of the manifold; At least two first sealing inner rings, each corresponding to the outer periphery of the receiving cavity.

11. The heat exchange structure according to any one of claims 1-7, characterized in that, The main shell consists of at least two shells, which are spliced ​​together along the first direction. The receiving cavities on two adjacent main shells are arranged in a one-to-one correspondence so that the battery cells in the two receiving cavities can be electrically connected.

12. The heat exchange structure according to claim 11, characterized in that, The main body shell is provided with the first confluence groove at both ends in the first direction, and each end of each heat exchange channel on the main body shell is connected to a first confluence groove. The first confluencement channels on the two adjacent main shells enclose the middle channel.

13. The heat exchange structure according to claim 11, characterized in that, Also includes: The second fastener is connected between two adjacent body shells.

14. The heat exchange structure according to claim 13, characterized in that, Each of the main shells is provided with at least one pair of first mounting ears on its side, and two of the first mounting ears in each pair are arranged at intervals along the first direction; The two adjacent first mounting ears of the two adjacent main shells are connected by a second fastener.

15. The heat exchange structure according to claim 11, characterized in that, Also includes: A second seal is sandwiched between two adjacent main body shells.

16. The heat exchange structure according to claim 11, characterized in that, It also includes a connecting component, which is located between two adjacent main shells and is provided corresponding to the receiving cavity; The connection component is used for electrical connection with two cells arranged along the first direction.

17. The heat exchange structure according to claim 16, characterized in that, The connection component includes: A male terminal piece, which is used to connect to the terminal of a battery cell, has a protruding ring on it, and a slot is formed inside the protruding ring; A female terminal piece, which is used to connect to the terminal of another battery cell, is provided with a plug, which is inserted into the slot.

18. The heat exchange structure according to claim 11, characterized in that, Each of the main shells is provided with at least two receiving cavities arranged at intervals along the second direction. Each receiving cavity is surrounded by at least one heat exchange channel. Each receiving cavity is connected at both ends along the first direction. The receiving cavities on two adjacent main shells are arranged in a one-to-one correspondence.

19. A battery pack, characterized in that, include: tray; The heat exchange structure according to any one of claims 1-18 is disposed on the tray; The battery cell is located within the receiving cavity.

20. The battery pack according to claim 19, characterized in that, The side of the main body shell is provided with at least one second mounting ear, the second mounting ear is provided with a first positioning hole, and the tray is provided with a positioning post or a second positioning hole corresponding to the first positioning hole.

21. An electrical appliance, characterized in that, Includes the battery pack according to claim 19 or 20.

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