Battery case structure, battery pack, and electric device

Abstract

The embodiment of the application provides a battery shell structure, a battery pack and an electric equipment, and belongs to the technical field of batteries. The battery shell structure comprises: a shell, the shell has a containing cavity for containing at least a battery cell, one end of the shell has a mounting port in communication with the containing cavity; a cover plate, the cover plate is arranged on the shell and is connected with at least an end surface of the mounting port facing the cover plate, an assembly hole for mounting a pole is formed in the cover plate; a heat conduction member, the heat conduction member is arranged on the cover plate, and the heat conduction member abuts against an inner wall surface of the shell; the abutting area between the heat conduction member and the inner wall surface of the shell is greater than or equal to the abutting area between the cover plate and the end surface of the mounting port. The heat conduction member increases the heat conduction contact area between the heat conduction member and the shell, increases the heat exchange area between the cover plate and the shell, makes the heat on the tab and the pole more easily transferred to the shell for heat dissipation, and realizes the improvement of the heat dissipation efficiency of the battery shell structure.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery casing structure, battery pack, and electrical device. Background Technology

[0002] The battery terminals are connected to the battery cells via tabs. When the battery is charging and discharging, current flows through the tabs and terminals, generating heat.

[0003] In the prior art, the battery casing structure includes an outer shell, a cover plate, a support component, and an insulating component. The outer shell surrounds the periphery of the battery cell, the cover plate covers the end of the outer shell, the support component and the insulating component are mounted on the cover plate, and the terminals pass through the cover plate, the support component, and the insulating component, and are electrically connected to the tabs via adapter plates. The heat generated by the tabs and terminals during battery charging and discharging is transferred to the cover plate through at least one of the support component and the insulating component, and then transferred from the cover plate to the outer shell for heat dissipation.

[0004] However, this structure results in lower heat dissipation efficiency for the battery's tabs and terminals. Utility Model Content

[0005] This application provides a battery casing structure, a battery pack, and electrical equipment to improve battery heat dissipation efficiency.

[0006] In a first aspect, embodiments of this application provide a battery casing structure, including:

[0007] The housing has at least a receiving cavity for accommodating the battery cell, and one end of the housing has a mounting port communicating with the receiving cavity;

[0008] A cover plate is placed on the outer casing and is connected to at least the end face of the mounting opening facing the cover plate. The cover plate has mounting holes for mounting the pole post.

[0009] A heat-conducting component is installed on the cover plate and abuts against the inner wall surface of the outer shell;

[0010] The contact area between the heat-conducting component and the inner wall of the outer casing is greater than or equal to the contact area between the cover plate and the end face of the mounting port.

[0011] In one possible implementation, the battery casing structure provided in this application includes a cover plate comprising:

[0012] A cover portion is provided on the end of the outer casing and is connected to the end face of the mounting port;

[0013] The embedding part is integrally disposed on the cover part and located within the receiving cavity;

[0014] The mounting hole connects the cover and the insert to the outside and the receiving cavity.

[0015] In one possible implementation, the battery housing structure provided in this application embodiment has an assembly gap between the outer peripheral surface of the embedded part and the inner wall surface of the outer shell.

[0016] Alternatively, the outer peripheral surface of the embedded part at least partially abuts against the inner wall surface of the outer casing.

[0017] In one possible implementation, the battery housing structure provided in this application embodiment includes a thickened portion as the heat-conducting component. The thickened portion is connected to the embedded portion, and the outer contour of the thickened portion is greater than or equal to the outer contour of the embedded portion.

[0018] The outer peripheral surface of the thickened part abuts against the inner wall surface of the outer shell.

[0019] In one possible implementation, the battery housing structure provided in this application embodiment further includes an extension portion in the heat-conducting component. The extension portion is disposed on the side of the thickened portion away from the embedded portion, and the outer peripheral surface of the extension portion abuts against the inner wall surface of the housing.

[0020] In one possible implementation, the battery casing structure provided in this application has an extension portion abutting against the inner wall surface of the outer casing with an area greater than or equal to the thickened portion abutting against the inner wall surface of the outer casing.

[0021] In one possible implementation, the battery casing structure provided in this application embodiment has an extension that is annular.

[0022] In one possible implementation, the battery casing structure provided in this application embodiment has the heat-conducting component and the cover plate integrally formed.

[0023] In one possible implementation, the battery casing structure provided in this application embodiment has the heat-conducting component and the cover plate connected separately.

[0024] In one possible implementation, the battery casing structure provided in this application embodiment has a thermal conductive component that is at least one of a metal thermal conductive component, a ceramic thermal conductive component, a silicone thermal conductive component, and a graphene thermal conductive component.

[0025] In one possible implementation, the battery casing structure provided in this application embodiment further includes:

[0026] A support component is provided on the side of the cover plate facing the receiving cavity, and at least part of the heat-conducting component is connected to the support component;

[0027] An insulating component is provided on the side of the cover plate away from the receiving cavity;

[0028] Assembly holes are provided on both the support components and the insulating components.

[0029] In one possible implementation, the battery casing structure provided in this application includes a support member comprising:

[0030] The first step portion abuts against the heat-conducting component;

[0031] The second step is located on the first step and abuts against the cover plate.

[0032] In one possible implementation, at least one of the support member and the insulating member in the battery casing structure provided in this application embodiment is a plastic member.

[0033] In one possible implementation, the battery casing structure provided in this application embodiment uses modified plastic parts.

[0034] In one possible implementation, the modified plastic part of the battery casing structure provided in this application embodiment is a ceramic modified plastic part.

[0035] Secondly, embodiments of this application provide a battery pack, including a device body and any of the aforementioned battery housing structures disposed on the device body.

[0036] Thirdly, embodiments of this application provide an electrical device, including a device body and a battery pack disposed on the device body.

[0037] The battery casing structure, battery pack, and electrical device provided in this application include a casing, a cover plate, and a heat-conducting component. The casing accommodates the battery cells and has an mounting opening at one end that communicates with an internal cavity. The cover plate is used to mount the terminals and is placed on the casing, connecting at least to the end face of the mounting opening to seal it. The heat-conducting component is disposed on the cover plate and abuts against the inner wall of the casing from within the cavity. By providing the heat-conducting component, connecting it to the cover plate, and abutting against the casing, with the contact area between the heat-conducting component and the casing being greater than or equal to the connection area between the cover plate and the casing, compared to existing battery casing structures where the cover plate only connects to the end face of the casing mounting opening, this application's battery casing structure utilizes the thermally conductive contact area between the heat-conducting component and the casing, increasing the heat exchange area between the cover plate and the casing. This allows heat from the terminals and terminals to be more easily transferred to the casing for heat dissipation, reducing the temperature of the terminals, terminals, and battery cells, and improving the heat dissipation efficiency of the battery casing structure. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0039] Figure 1 A schematic diagram showing the disassembled structure of the battery casing and the terminal tabs provided in the embodiments of this application;

[0040] Figure 2 for Figure 1 A schematic diagram of the assembly structure;

[0041] Figure 3 for Figure 2 Schematic diagram of the structure at point A Figure 1 ;

[0042] Figure 4 for Figure 2 Schematic diagram of the structure at point A Figure 2 .

[0043] Explanation of reference numerals in the attached figures:

[0044] 100 - Outer shell; 110 - Receiving cavity; 120 - Mounting port;

[0045] 200 - Cover plate; 210 - Covering part; 220 - Embedding part; 221 - Assembly hole;

[0046] 300 - Thermal conductive part; 310 - Thickened part; 320 - Extension part;

[0047] 400 - Support component; 410 - First step section; 420 - Second step section;

[0048] 500 - Insulating parts;

[0049] 610 - Terminal post; 620 - Terminal tab; 630 - Adapter piece; 640 - Battery cell; 710 - Rubber part; 720 - Cap.

[0050] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the absence of conflict, the following embodiments and features can be combined with each other.

[0052] In existing technology, the battery casing structure includes an outer shell, a cover plate, a support component, and an insulating component. The outer shell surrounds the periphery of the battery cell, and the cover plate covers the end of the outer shell and connects to the end face of the outer shell, with an assembly gap between the cover plate and the inner wall surface of the outer shell. The support component and the insulating component are mounted on the cover plate, and the terminal posts pass through the cover plate, the support component, and the insulating component, and are electrically connected to the tabs via adapter plates. The heat generated by the tabs during battery charging and discharging is transferred through two pathways: 1) tab-adapter-support component-cover plate-outer shell, and 2) tab-adapter-terminal post-insulator-cover plate-outer shell. The heat generated by the terminals during battery charging and discharging is transferred through the terminal post-insulator-cover plate-outer shell, and then transferred by the outer shell to heat sinks such as cold plates for heat dissipation.

[0053] However, since the common path for heat dissipation of the tabs and terminals is from the cover plate to the outer casing, and the cover plate and the outer casing are only connected at the end face of the outer casing, the end face area is small, resulting in a large thermal resistance at the connection, which reduces the heat dissipation between the cover plate and the casing, making the heat dissipation efficiency of the battery's tabs and terminals low.

[0054] To overcome the deficiencies in the prior art, the battery casing structure, battery pack, and electrical equipment provided in this application are described below. The battery casing structure includes an outer shell, a cover plate, and a heat-conducting component. The outer shell is used to accommodate the battery cell, and one end of it has a mounting opening communicating with an internal cavity. The cover plate is used to assemble the terminal post and is placed on the outer shell, connecting at least to the end face of the mounting opening to close it. The heat-conducting component is disposed on the cover plate and abuts against the inner wall surface of the outer shell from within the cavity. Thus, by providing the heat-conducting component, which connects to the cover plate and abuts against the outer shell, and the contact area between the heat-conducting component and the outer shell is greater than or equal to the connection area between the cover plate and the outer shell, compared to the existing battery casing structure where the cover plate only connects to the end face of the casing mounting opening, the battery casing structure of this application utilizes the heat-conducting component to increase the thermal contact area between the cover plate and the outer shell, increasing the heat exchange area between the cover plate and the outer shell. This allows heat from the tabs and terminal posts to be more easily transferred to the outer shell for heat dissipation, reducing the temperature of the terminal posts, tabs, and battery cells, thereby improving the heat dissipation efficiency of the battery casing structure.

[0055] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0056] Reference Figures 1 to 4 As shown, this application embodiment provides a battery casing structure, including:

[0057] The housing 100 has at least a receiving cavity 110 for receiving the battery cell 640, and one end of the housing 100 has a mounting port 120 communicating with the receiving cavity 110.

[0058] A cover plate 200 is provided on the outer casing 100 and is connected at least to the end face of the mounting opening 120 facing the cover plate 200. The cover plate 200 has an assembly hole 221 for mounting the pole post 610.

[0059] A heat-conducting component 300 is disposed on the cover plate 200 and abuts against the inner wall surface of the outer shell 100.

[0060] The contact area between the heat-conducting component 300 and the inner wall of the outer casing 100 is greater than or equal to the connection area between the cover plate 200 and the end face of the mounting port 120.

[0061] It is understood that the outer casing 100 forms a receiving cavity 110 to accommodate the battery cell 640. Specifically, the outer casing 100 may be an aluminum casing, which is lightweight and has good thermal conductivity, effectively protecting the battery cell 640. The outer casing 100 is in direct contact with heat sinks such as cold plates to conduct heat to the heat sink and maintain the temperature of the battery cell 640, the terminal post 610, and the tab 620.

[0062] The housing 100 has an installation port 120 at one end along the length of the cell 640 for mounting internal components. The cell 640 has a tab 620 and an adapter 630 on one side corresponding to the installation port 120 for connection with the terminal 610.

[0063] A cover plate 200 is placed over the mounting opening 120 and is connected at least along the width direction of the housing to the end face of the mounting opening 120 facing the cover plate 200. This connection can be achieved by welding or bonding, and this application does not impose any limitations on this. The cover plate 200 and the housing 100 form a closed housing that effectively protects the battery cell 640. The cover plate 200 has mounting holes 221 through which the electrode post 610 passes. It is electrically connected to the electrode tab 620 via an adapter piece 630. Other components are also provided on the cover plate 200 to fix and insulate the electrode post 610.

[0064] A heat-conducting element 300 is also provided on the side of the cover plate 200 facing the receiving cavity 110. The heat-conducting element 300 is connected to the cover plate 200 and abuts against the inner wall surface of the outer shell 100 along the length of the shell, so that the cover plate 200 can conduct heat to the outer shell 100 through the heat-conducting element 300. The abutment area between the heat-conducting element 300 and the inner wall surface of the outer shell 100 is greater than or equal to the connection area between the cover plate 200 and the outer shell 100, so that the heat exchange area between the heat-conducting element 300 and the outer shell 100 is larger, which facilitates the heat conduction from the cover plate 200 to the outer shell 100 through the heat-conducting element 300, thereby improving the heat conduction efficiency between the cover plate 200 and the outer shell 100, and thus improving the heat dissipation efficiency of the pole 610 and the tab 620.

[0065] Therefore, the battery housing structure provided in this application embodiment includes an outer shell 100, a cover plate 200, and a heat-conducting component 300. The outer shell 100 is used to accommodate the battery cell 640, and one end of it has a mounting port 120 communicating with the internal accommodating cavity 110. The cover plate 200 is used to assemble the terminal post 610 and is covered on the outer shell 100, and is connected to at least the end face of the mounting port 120 to close the mounting port 120. The heat-conducting component 300 is disposed on the cover plate 200 and abuts against the inner wall surface of the outer shell 100 from inside the accommodating cavity 110. Therefore, by setting the heat-conducting component 300, the heat-conducting component 300 is connected to the cover plate 200 and abuts against the outer shell 100. The abutment area between the heat-conducting component 300 and the outer shell 100 is greater than or equal to the connection area between the cover plate 200 and the outer shell 100. Compared with the existing battery casing structure where the cover plate 200 is only connected to the end face of the casing mounting port 120, the battery casing structure of this application increases the heat-conducting contact area between the cover plate 200 and the outer shell 100 by using the heat-conducting component 300. This increases the heat exchange area between the cover plate 200 and the outer shell 100, making it easier for the heat on the tabs 620 and the terminals 610 to be transferred to the outer shell 100 for heat dissipation. This reduces the temperature of the terminals 610, tabs 620 and cells 640, thereby improving the heat dissipation efficiency of the battery casing structure.

[0066] In some embodiments, refer to Figures 1 to 4 As shown, the cover plate 200 includes:

[0067] Covering part 210 covers the end of the outer casing 100 and is connected to the end face of the mounting port 120;

[0068] The embedding part 220 is integrally disposed on the cover part 210 and located inside the receiving cavity 110;

[0069] The mounting hole 221 passes through the cover portion 210 and the insert portion 220 to connect the outside and the receiving cavity 110.

[0070] The cover portion 210 is provided on the end of the housing 100 corresponding to the mounting port 120, so as to be tightly connected with the end face of the mounting port 120 along the width direction of the cell 640, which helps to ensure the sealing performance between the cover plate 200 and the housing 100 and prevent external dust, moisture and other impurities from entering the receiving cavity 110.

[0071] The insert portion 220 is integrally disposed on the side of the cover portion 210 facing the receiving cavity 110, and the outer contour of the insert portion 220 is smaller than the outer contour of the cover portion 210, so that the insert portion 220 can be embedded in the receiving cavity 110, thereby forming a nested structure between the cover plate 200 and the outer shell 100, and enhancing the connection stability between the cover plate 200 and the outer shell 100.

[0072] Furthermore, refer to Figure 3 and Figure 4As shown, there is an assembly gap between the outer peripheral surface of the embedding part 220 and the inner wall surface of the outer casing 100;

[0073] Alternatively, the outer peripheral surface of the embedded part 220 may at least partially abut against the inner wall surface of the outer casing 100.

[0074] Understandably, the presence of the assembly gap makes it easier for the insert 220 to be inserted into the receiving cavity 110 of the housing 100, reducing assembly difficulty and improving assembly efficiency.

[0075] The embedded part 220 at least partially abuts against the outer shell 100. Specifically, the outer peripheral surface of the embedded part 220 may completely abut against the inner wall surface of the outer shell 100, or a mounting groove may be further formed on the outer peripheral surface of the embedded part 220 that does not abut against the inner wall surface of the outer shell 100, so that the cover plate 200 can further transfer heat through the contact between the embedded part 220 and the outer shell 100, thereby improving the heat transfer efficiency of the cover plate 200.

[0076] Furthermore, in some embodiments, reference is made to Figures 2 to 4 As shown, the heat-conducting component 300 includes a thickened portion 310, which is connected to the embedded portion 220. The outer contour of the thickened portion 310 is greater than or equal to the outer contour of the embedded portion 220.

[0077] The outer peripheral surface of the thickened part 310 abuts against the inner wall surface of the outer casing 100.

[0078] By providing an embedded portion 220 on the thickened portion 310, the outer contour of the thickened portion 310 is greater than or equal to the outer contour of the embedded portion 220, so that the thickened portion 310 can smoothly and reliably abut against the inner wall surface of the outer casing 100. Thus, the thickened portion 310 can be regarded as the thickened portion of the cover plate 200, which increases the contact area with the inner wall surface of the outer casing 100, improves the heat transfer area between the cover plate 200 and the outer casing 100, and also increases the thickness of the cover plate 200, thereby increasing the heat capacity of the cover plate 200. This makes it easier for the heat generated by the pole post 610 and the tab 620 to be conducted more efficiently through the embedded portion 220 to the thickened portion 310, and then from the thickened portion 310 to the outer casing 100.

[0079] Furthermore, refer to Figures 2 to 4 As shown, the heat-conducting component 300 also includes an extension 320, which is disposed on the side of the thickened portion 310 away from the embedded portion 220, and the outer peripheral surface of the extension 320 abuts against the inner wall surface of the outer casing 100.

[0080] Understandably, this further increases the contact area between the heat-conducting component 300 and the outer casing 100, improving the overall heat transfer efficiency. Furthermore, the extension 320 helps to distribute heat more evenly on the cover plate 200 and the heat-conducting component 300, avoiding localized heat accumulation, resulting in a more balanced temperature across all parts and higher heat transfer efficiency.

[0081] In specific implementation, the contact area between the extension 320 and the inner wall of the outer shell 100 is greater than or equal to the contact area between the thickened part 310 and the inner wall of the outer shell 100.

[0082] A larger contact area means that the extension 320 has a larger contact area with the inner wall of the housing 100, which can transfer heat to the housing 100 more quickly. In addition, this allows the heat concentrated at the cover plate 200 and the thickened part 310 to be more evenly distributed on the larger extension 320, avoiding high temperatures near the battery terminals 610 and tabs 620.

[0083] Furthermore, referring to Figure 3 and Figure 4 As shown, the extension 320 is annular.

[0084] It is understandable that the extension 320 is designed in a ring shape, which ensures that there is a large contact area between the extension 320 and the inner wall of the housing 100, and also allows the extension 320 to leave sufficient installation space for other components in the housing space, thereby improving the space utilization rate of the housing space and avoiding the extension 320 from occupying the housing space excessively.

[0085] In some embodiments, the heat-conducting element 300 and the cover plate 200 are integrally formed.

[0086] This design makes the overall structure of the heat-conducting component 300 and the cover plate 200 simpler and more compact, and easier to assemble.

[0087] Furthermore, this eliminates the connection interface between the heat-conducting component 300 and the cover plate 200, resulting in better consistency, lower thermal resistance, and guaranteed heat transfer efficiency.

[0088] In some embodiments, the heat-conducting element 300 is connected to the cover plate 200 separately.

[0089] The heat-conducting component 300 and the cover plate 200 are connected separately. Specifically, they can be bonded, welded, or otherwise fixedly connected depending on the materials of the heat-conducting component 300 and the cover plate 200. This separate connection allows the heat-conducting component 300 to be made of a material with higher thermal conductivity than the cover plate 200, enabling it to more efficiently transfer heat from the cover plate 200 to the outer casing 100.

[0090] The heat-conducting component 300 is at least one of a metal heat-conducting component 300, a ceramic heat-conducting component 300, a silicone heat-conducting component 300, and a graphene heat-conducting component 300.

[0091] It is understandable that the above materials all have good thermal conductivity, which enables the heat-conducting component 300 to achieve efficient heat transfer.

[0092] In some embodiments, refer to Figures 1 to 4 As shown, the battery casing structure also includes:

[0093] A bracket 400 is disposed on the side of the cover plate 200 facing the receiving cavity 110, and at least a portion of the heat-conducting component 300 is connected to the bracket 400.

[0094] Insulating element 500 is provided on the side of cover plate 200 away from receiving cavity 110;

[0095] Assembly holes 221 are provided on both the bracket component 400 and the insulating component 500.

[0096] It is understandable that the support component 400 can provide stable support for the heat conduction component 300 and help determine the installation position of other components, ensuring the stability and reliability of the internal structure of the battery.

[0097] The insulating component 500 can provide effective insulation protection for the pole post 610.

[0098] Furthermore, a cap 720 is provided on the side of the cover plate 200 away from the receiving cavity 110 to fix the pole post 610, and a rubber part 710 is provided on the side of the cover plate 200 facing the receiving cavity 110 to further ensure the insulation performance of the pole post 610.

[0099] Among them, reference Figure 4 As shown, the support member 400 includes:

[0100] The first step portion 410 abuts against the heat-conducting component 300;

[0101] The second step 420 is disposed on the first step 410 and abuts against the cover plate 200.

[0102] This design allows the support member 400 and the heat-conducting member 300 to avoid each other, improving the space utilization of the accommodating space. Furthermore, the stepped design increases the contact area and connection stability between the support member 400, the cover plate 200, and the heat-conducting member 300.

[0103] In some embodiments, at least one of the support member 400 and the insulating member 500 is a plastic member.

[0104] Plastic itself has good insulation properties, which can further enhance the electrical insulation effect of the battery and ensure electrical safety.

[0105] Furthermore, the plastic parts are modified plastic parts.

[0106] Modified plastic parts can be incorporated to further improve their thermodynamic properties and enhance heat transfer efficiency.

[0107] Specifically, the modified plastic parts are ceramic-modified plastic parts.

[0108] Ceramic-modified plastic parts have high thermal conductivity and high temperature resistance, which can improve the thermal conductivity of plastic parts and reduce the coefficient of thermal expansion and thermal resistance.

[0109] This application also provides a battery pack, including a device body and any of the aforementioned battery housing structures disposed on the device body.

[0110] The battery casing structure has been described in detail in the above embodiments and will not be repeated here.

[0111] This application also provides an electrical device, including a device body and a battery pack disposed on the device body.

[0112] The battery pack and electrical device provided in this application embodiment are configured with a battery housing structure, which includes an outer shell 100, a cover plate 200, and a heat-conducting component 300. The outer shell 100 is used to accommodate the battery cell 640, and one end of it has a mounting port 120 communicating with the internal accommodating cavity 110. The cover plate 200 is used to assemble the terminal post 610 and is covered on the outer shell 100, and is connected to at least the end face of the mounting port 120 to close the mounting port 120. The heat-conducting component 300 is disposed on the cover plate 200 and abuts against the inner wall surface of the outer shell 100 from inside the accommodating cavity 110. Therefore, by setting the heat-conducting component 300, the heat-conducting component 300 is connected to the cover plate 200 and abuts against the outer shell 100. The abutment area between the heat-conducting component 300 and the outer shell 100 is greater than or equal to the connection area between the cover plate 200 and the outer shell 100. Compared with the existing battery casing structure where the cover plate 200 is only connected to the end face of the casing mounting port 120, the battery casing structure of this application increases the heat-conducting contact area between the cover plate 200 and the outer shell 100 by using the heat-conducting component 300. This increases the heat exchange area between the cover plate 200 and the outer shell 100, making it easier for the heat on the tabs 620 and the terminals 610 to be transferred to the outer shell 100 for heat dissipation. This reduces the temperature of the terminals 610, tabs 620 and cells 640, thereby improving the heat dissipation efficiency of the battery casing structure.

[0113] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0114] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0115] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0116] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery casing structure, characterized in that, include: The housing (100) has at least a receiving cavity (110) for receiving a battery cell (640), and one end of the housing (100) has a mounting port (120) communicating with the receiving cavity (110). A cover plate (200) is provided on the outer casing (100) and is connected at least to the end face of the mounting port (120) facing the cover plate (200). The cover plate (200) has an assembly hole (221) for mounting the pole post (610). A heat-conducting component (300) is disposed on the cover plate (200) and abuts against the inner wall surface of the outer shell (100); The contact area between the heat-conducting component (300) and the inner wall of the outer shell (100) is greater than or equal to the connection area between the cover plate (200) and the end face of the mounting port (120).

2. The battery casing structure according to claim 1, characterized in that, The cover plate (200) includes: Cover (210), which covers the end of the outer shell (100) and is connected to the end face of the mounting port (120); An insert (220) is integrally disposed on the cover (210) and located within the receiving cavity (110); The mounting hole (221) passes through the cover portion (210) and the insert portion (220) to connect the outside and the receiving cavity (110).

3. The battery casing structure according to claim 2, characterized in that, There is an assembly gap between the outer peripheral surface of the embedded part (220) and the inner wall surface of the outer shell (100); Alternatively, the outer peripheral surface of the embedded part (220) at least partially abuts against the inner wall surface of the outer shell (100).

4. The battery casing structure according to claim 3, characterized in that, The heat-conducting component (300) includes a thickened portion (310), which is connected to the embedded portion (220), and the outer contour of the thickened portion (310) is greater than or equal to the outer contour of the embedded portion (220). The outer peripheral surface of the thickened portion (310) abuts against the inner wall surface of the outer shell (100).

5. The battery casing structure according to claim 4, characterized in that, The heat-conducting component (300) further includes an extension (320), which is disposed on the side of the thickened portion (310) away from the embedded portion (220), and the outer peripheral surface of the extension (320) abuts against the inner wall surface of the outer shell (100).

6. The battery casing structure according to claim 5, characterized in that, The contact area between the extension (320) and the inner wall of the outer shell (100) is greater than or equal to the contact area between the thickened portion (310) and the inner wall of the outer shell (100).

7. The battery casing structure according to claim 5, characterized in that, The extension (320) is annular.

8. The battery casing structure according to any one of claims 1-7, characterized in that, The heat-conducting component (300) is integrally formed with the cover plate (200).

9. The battery casing structure according to any one of claims 1-7, characterized in that, The heat-conducting component (300) is separately connected to the cover plate (200).

10. The battery casing structure according to claim 9, characterized in that, The heat-conducting component (300) is at least one of a metal heat-conducting component (300), a ceramic heat-conducting component (300), a silicone heat-conducting component (300), and a graphene heat-conducting component (300).

11. The battery casing structure according to any one of claims 1-7, characterized in that, Also includes: A support member (400) is disposed on the side of the cover plate (200) facing the receiving cavity (110), and at least part of the heat-conducting element (300) is connected to the support member (400); An insulating element (500) is disposed on the side of the cover plate (200) opposite to the receiving cavity (110); Assembly holes (221) are provided on both the bracket (400) and the insulating component (500).

12. The battery casing structure according to claim 11, characterized in that, The support member (400) includes: The first step portion (410) abuts against the heat-conducting element (300); The second step (420) is disposed on the first step (410) and abuts against the cover plate (200).

13. The battery casing structure according to claim 11, characterized in that, At least one of the support member (400) and the insulating member (500) is a plastic member.

14. The battery casing structure according to claim 13, characterized in that, The plastic part is a modified plastic part.

15. The battery casing structure according to claim 14, characterized in that, The modified plastic part is a ceramic-modified plastic part.

16. A battery pack, characterized in that, It includes a device body and a battery housing structure disposed on the device body as described in any one of claims 1-15.

17. An electrical appliance, characterized in that, It includes a device body and a battery pack as described in claim 16 disposed on the device body.

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