Housing assembly, battery cell, battery assembly, and electric device

Abstract

The utility model discloses a kind of shell assembly, battery monomer, battery assembly and electric equipment, shell assembly includes: shell, with first wall part, first wall part has mounting hole;Electric connection component, including conducting part and insulating part, conducting part is set mounting hole and includes three conducting sections, first conducting section is located shell outside, third conducting section is at least partially located inside shell and adapted to be electrically connected with electrode assembly, insulating part is set at the outer periphery of second conducting section and is integrally formed with conducting part, insulating part is at least partially located at the outside of shell and sealingly cooperates with shell.The shell assembly according to the utility model embodiment, by integrally forming the insulating part with the conducting part, the sealing between the insulating part and the conducting part can be improved, and the assembly of the battery monomer is facilitated, by setting at least part of the insulating part on the outside of the shell, the installation of the insulating part is facilitated, the space of the electrode assembly that can be accommodated in the shell is increased, and the volumetric energy density of the battery monomer is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a housing assembly, a battery cell, a battery assembly, and an electrical device. Background Technology

[0002] In related technologies, the connection between the battery cell casing and the terminal post needs to be sealed by a sealing element. The sealing element needs to be assembled with the casing and terminal post, which involves many parts and complex assembly, making it difficult to guarantee the sealing effect and leaving room for improvement. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a housing assembly that is easy to assemble, has a good sealing effect, and is beneficial to improving the energy density of individual battery cells.

[0004] This utility model also proposes a battery cell.

[0005] This utility model also proposes a battery assembly.

[0006] This utility model also proposes an electrical device.

[0007] A housing assembly according to an embodiment of the present invention includes: a housing having a first wall portion having a mounting hole penetrating the first wall portion along its thickness direction; and an electrical connection component disposed on the first wall portion and including a conductive element and an insulating element. The conductive element passes through the mounting hole and includes a first conductive segment, a second conductive segment, and a third conductive segment. The first conductive segment is located outside the housing, the second conductive segment connects the first conductive segment and the third conductive segment, at least a portion of the third conductive segment is located inside the housing and is adapted to be electrically connected to an electrode assembly, and the insulating element is disposed on the outer periphery of the second conductive segment and integrally formed with the conductive element, wherein at least a portion of the insulating element is located outside the housing and is sealed to the housing.

[0008] According to the embodiment of the present utility model, by integrally molding the insulating component and the conductive component, the sealing performance between the insulating component and the conductive component can be improved, and the assembly of the housing component can be facilitated. By setting at least a portion of the insulating component on the outside of the housing, it is not only convenient to install the insulating component, but also to increase the space that the electrode components can be accommodated inside the housing, thereby improving the volumetric energy density of the battery cell.

[0009] In some embodiments, the insulating member includes a limiting portion located on the side of the first wall portion away from the interior of the housing, and the limiting portion abutting against the first wall portion.

[0010] In some embodiments, the insulating element further includes a sealing section disposed within the mounting hole and having an interference fit with the inner wall of the mounting hole.

[0011] In some embodiments, a pressure ring is further included, which is disposed around at least a portion of the outer periphery of the insulating member for pressing the insulating member onto the housing, the pressure ring being fixedly connected to the housing.

[0012] In some embodiments, the insulating member has a first limiting surface and a second limiting surface, the first limiting surface being the side surface of the insulating member that abuts against the housing, and the second limiting surface being at least a portion of the side surface of the insulating member that abuts against the pressure ring, extending in a direction away from the first limiting surface and in a direction close to the conductive member.

[0013] In some embodiments, at least a portion of the second limiting surface is an inclined surface, and the included angle between the first limiting surface and the inclined surface is α, where 20°≤α≤80°.

[0014] In some embodiments, the limiting portion includes a first limiting portion and a second limiting portion, the first limiting portion being adapted to abut against the housing, the second limiting portion being connected to the side of the first limiting portion away from the housing, at least a portion of the first limiting portion protruding from the outer periphery of the second limiting portion, wherein the second limiting portion has a second limiting surface, and the first limiting portion has a first limiting surface.

[0015] In some embodiments, the pressure ring includes an inner ring portion and an outer ring portion. The outer ring portion includes a first end and a second end opposite to each other along the thickness direction of the first wall portion. The inner ring portion is connected to the first end, and the second end is connected to the side of the first wall portion away from the center of the housing. The inner ring portion extends in a direction away from the first wall portion toward the conductive element. The inner ring portion abuts against the second limiting portion, and the outer ring portion abuts against the portion of the first limiting portion that protrudes from the second limiting portion to press the insulating element onto the housing.

[0016] In some embodiments, the pressure ring is integrally formed with the insulating element and the conductive element.

[0017] In some embodiments, the pressure ring is welded to the first wall portion.

[0018] In some embodiments, the conductive element is a metal sheet.

[0019] In some embodiments, the device further includes: an insulating film disposed on the side of the first wall portion near the interior of the housing and adapted to be disposed between the electrode assembly and the housing, the insulating film having an opening through which a portion of the conductive element passes and is connected to the electrode assembly; or, the opening through which a tab of the electrode assembly passes to be connected to the conductive element.

[0020] In some embodiments, the housing includes a frame and a cover plate, the frame having at least one opening, the cover plate being sealed to the frame to close the opening, and the electrical connection component being disposed on the frame.

[0021] A battery cell according to a second aspect of the present invention includes an electrode assembly and a housing assembly according to a first aspect of the present invention, wherein the electrode assembly is disposed within the housing. By employing the aforementioned housing assembly, the insulating and conductive components are integrally formed, which improves the sealing performance between the insulating and conductive components and facilitates the assembly of the battery cell. Furthermore, by disposing at least a portion of the insulating component on the outside of the housing, it facilitates the installation of the insulating component and increases the space available for the electrode assembly within the housing, thereby improving the volumetric energy density of the battery cell.

[0022] In some embodiments, the electrode assembly has tabs, and the third conductive segment is connected to the tabs.

[0023] A battery assembly according to a third aspect of the present invention includes a battery cell according to a second aspect of the present invention, and a circuit structure, wherein the circuit structure and the battery cell are electrically connected. By using the aforementioned battery cell, the insulating and conductive components are integrally formed, which improves the sealing performance between the insulating and conductive components and facilitates assembly. Furthermore, by placing at least a portion of the insulating component on the outside of the housing, it facilitates the installation of the insulating component and increases the space available for electrode components inside the housing, thereby improving the volumetric energy density of the battery assembly.

[0024] The electrical device according to the fourth aspect of the present invention includes a battery cell according to the second aspect of the present invention or a battery assembly according to the third aspect of the present invention. By using the battery cell described above, the insulating part and the conductive part are integrally formed, which can improve the sealing performance between the insulating part and the conductive part, and at the same time facilitate the assembly of the battery cell. By setting at least a portion of the insulating part on the outside of the housing, it is not only convenient to install the insulating part, but also to increase the space that the electrode assembly can be accommodated inside the housing, thereby improving the volumetric energy density of the battery cell and improving the endurance of the electrical device.

[0025] 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

[0026] 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:

[0027] Figure 1 This is a schematic diagram of the structure of the housing assembly according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of a battery cell according to an embodiment of the present utility model;

[0029] Figure 3 It is along Figure 2 Sectional view of line AA in the middle;

[0030] Figure 4 It is along Figure 2 Sectional view of the middle BB line;

[0031] Figure 5 yes Figure 4 The center circle shows a magnified view of point C;

[0032] Figure 6 This is a partial structural schematic diagram of a battery cell according to an embodiment of the present utility model;

[0033] Figure 7 This is a partial exploded view of a battery cell according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of an electrical device according to an embodiment of the present utility model.

[0035] Figure label:

[0036] 100 battery cells, 200 electrical devices, 300 casing components, 400 battery modules

[0037] Housing 10, mounting hole 101, first wall portion 102, frame 11, cover plate 12

[0038] Electrode assembly 20,

[0039] Electrical connection component 30, conductive element 31, first conductive segment 311, second conductive segment 312, third conductive segment 313, insulating element 32, first limiting surface 3201, second limiting surface 3202, sealing segment 321, limiting part 322, first limiting part 3221, second limiting part 3222, pressure ring 33, inner ring part 331, outer ring part 332.

[0040] Insulating film 40. Detailed Implementation

[0041] 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.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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 with "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.

[0043] 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.

[0044] The following is for reference. Figures 1-7 The present invention describes a housing assembly 300 and a battery cell 100 according to an embodiment of the present invention.

[0045] like Figures 1-7 As shown, according to one embodiment of the present invention, the housing assembly 300 includes a housing 10 and an electrical connection component 30. The battery cell 100 includes the housing assembly 300 and an electrode assembly 20. The electrode assembly 20 is disposed inside the housing 10. The electrode assembly 20 can be a wound structure or a stacked structure.

[0046] The housing 10 has a first wall portion 102, the first wall portion 102 having a thickness direction (e.g., Figure 5The mounting hole 101 (shown in the vertical direction) penetrates the first wall portion 102. The electrical connection component 30 is disposed on the first wall portion 102. The electrical connection component 30 includes a conductive element 31 and an insulating element 32. The conductive element 31 passes through the mounting hole 101 and includes a first conductive segment 311, a second conductive segment 312 and a third conductive segment 313. The first conductive segment 311 is located outside the housing 10. The second conductive segment 312 connects the first conductive segment 311 and the third conductive segment 313. At least a portion of the third conductive segment 313 is located inside the housing 10. The third conductive element 313 can be electrically connected to the electrode assembly 20, thereby connecting the conductive element 31 to the electrode assembly 20 to realize the transmission of current.

[0047] The insulating component 32 is located on the outer periphery of the second conductive segment 312. The insulating component 32 is integrally formed with the conductive component 31, that is, neither the first conductive segment 311 nor the third conductive segment 311 is wrapped by the insulating component 32. It is located outside the insulating component 32. For example, the first conductive segment 311 can be connected to the external circuit structure, and the third conductive segment 311 extends into the housing 10. The electrode assembly 20 has tabs, and the third conductive segment 311 is directly connected to the tabs of the electrode assembly 20, for example, by direct welding. Therefore, there is no need to set up additional conductive adapters, which reduces the number of parts, facilitates assembly, saves space, and improves the volumetric energy density of the battery cell 100.

[0048] The insulating component 32 and the conductive component 31 are integrally formed, so that there is no gap between the conductive component 31 and the insulating component 32, resulting in good sealing performance. Furthermore, when the electrical connection component 30 is assembled onto the housing 10 of the battery cell 100, it can be directly and integrally installed onto the housing 10, resulting in fewer parts and simpler assembly.

[0049] The conductive component 31 and the insulating component 32 can be integrally formed by injection molding, so that the insulating component 32 wraps around the outer periphery of the conductive component 31 and the conductive component 31 penetrates the insulating component 32.

[0050] The insulating element 32 is located at least partially on the outside of the housing 10 and is sealed to the housing 10. This allows the insulating element 32 to be installed from the outside of the housing 10, improving the ease of installation. At the same time, it can reduce the space occupied by the insulating element 32 inside the housing 10, thereby increasing the space that the electrode assembly 20 can be accommodated inside the housing 10, and thus improving the volumetric energy density of the battery cell 100.

[0051] According to the embodiment of the present utility model, the housing assembly 300, by integrally molding the insulating member 32 and the conductive member 31, can improve the sealing performance between the insulating member 32 and the conductive member 31, and at the same time facilitate the assembly of the housing assembly 300. By disposing at least a portion of the insulating member 32 on the outside of the housing 10, it is not only convenient to install the insulating member 32, but also increases the space that the electrode assembly 20 can accommodate inside the housing 10, thereby improving the volumetric energy density of the battery cell 100.

[0052] like Figure 5 As shown, in some embodiments, the insulating member 32 includes a limiting portion 322, which is located on the outside of the housing 10 and abuts against the outer surface of the housing 10, thereby achieving a sealed installation of the insulating member 32.

[0053] By mounting the insulating component 32 on the housing 10, the conductive component 31 can be insulated from the housing 10, and the insulating component 32 as a whole will not occupy the internal space of the housing 10, thereby increasing the space that the electrode assembly 20 can be accommodated inside the housing 10 and improving the volumetric energy density of the battery cell 100.

[0054] In some examples, the insulating element 32 is molded from fusible polytetrafluoroethylene (PFA) plastic, which has corrosion resistance and high temperature stability.

[0055] like Figure 5 As shown, in some embodiments, the insulating member 32 includes a sealing section 321, and the sealing section 321 and the limiting part 322 are integrally connected. The sealing section 321 is disposed in the mounting hole 101 and is used to insulate and isolate the conductive member 31 from the housing 10. The sealing section 321 can be press-fitted with the inner wall of the mounting hole 101 to improve the sealing effect.

[0056] In some examples, the mounting hole 101 is an elongated hole, and correspondingly, the insulating element 32 is in one direction (e.g., Figure 2 The width in the left-right direction (as shown) is greater than the width in the other direction (e.g., Figure 2 The width of the electrical connection component 30 (in the front-to-back direction) makes it difficult to twist during installation and allows for quick positioning and installation.

[0057] like Figures 2-7 As shown, in some embodiments, the electrical connection component 30 further includes a pressure ring 33, which is disposed on the outer periphery of at least a portion of the insulating member 32 for pressing the insulating member 32 onto the housing 10. The pressure ring 33 is fixedly connected to the housing 10 to press the insulating member 32 to seal the mounting hole 101.

[0058] In other words, by pressing and fixing the insulating component 32 to the mounting hole 101 of the housing 10 with the pressure ring 33, the sealing effect can be effectively guaranteed.

[0059] The pressure ring 33 can be formed into a ring, through which the insulating component 32 and the conductive component 31 pass. The width of the ring is not less than 1 mm, so that the pressure ring 33 and the insulating component 32 have a large contact area to ensure a good sealing effect.

[0060] Of course, the pressure ring 33 can also be semi-circular or other structural forms, and by connecting with the housing 10, it can locally press and limit the insulating part 32.

[0061] like Figure 5 As shown, in some embodiments, the insulating member 32 has a first limiting surface 3201 and a second limiting surface 3202. The first limiting surface 3201 is the side surface of the insulating member 32 that abuts against the housing 10. The second limiting surface 3202 is at least a portion of the side surface of the insulating member 32 that abuts against the pressure ring 33. The second limiting surface 3202 extends obliquely to the first limiting surface 3201 and in a direction away from the first limiting surface 3201. The second limiting surface 3202 extends obliquely towards the conductive member 31. The second limiting surface 3202 can extend in a straight line or in an arc direction. That is, the second limiting surface 3202 can be an oblique plane, an oblique convex arc surface, or an oblique concave arc surface.

[0062] Specifically, the second limiting surface 3202 includes a portion along the thickness direction of the first wall portion 102 (e.g., ...). Figure 5 The first and second ends (shown in the up-down direction) are opposite each other. In the left-right and front-back directions, the first end (i.e., the upper end) is closer to the conductive element 31 relative to the second end (i.e., the lower end), and the second end (i.e., the lower end) is closer to the first limiting surface 3201 relative to the first end (i.e., the upper end). There is an angle between the line connecting the first end and the second end and the plane containing the first limiting surface 3201.

[0063] Therefore, when the electrical connection component 30 is assembled on the housing 10, the outer surface of the housing 10 is a plane, and the first limiting surface 3201 abuts against the outer surface of the housing 10, thus forming a plane parallel to the outer surface of the housing 10. When the housing 10 is placed horizontally, when the pressure ring 33 presses against the second limiting surface 3202, the pressure ring 33 can apply a pressing force to the insulating component 32 in both the horizontal and vertical directions, thereby making the insulating component 32 and the housing 10 fit more tightly and improving the sealing effect.

[0064] In some examples, the second limiting surface 3202 is a limiting surface extending circumferentially along the insulating member 32. A portion of the insulating member 32 can be frustum-shaped, and the second limiting surface 3202 is the outer surface of the frustum-shaped portion. Alternatively, a portion of the insulating member 32 can be frustum-shaped, and the second limiting surface 3202 is the outer surface of the frustum-shaped portion, such as... Figure 5As shown, in some embodiments, at least a portion of the second limiting surface 3202 is an inclined surface, that is, the second limiting surface may include multiple inclined surfaces. Two adjacent inclined surfaces can be directly connected or connected by a transitional arc surface. The included angle between the first limiting surface 3201 and the inclined surface is α, 20°≤α≤80°. Here, the inclined surface can be an inclined plane, an inclined concave surface, or an inclined convex surface. This facilitates the manufacturing and forming of the insulating component 32 and allows the pressure ring 33 to exert a certain force on the insulating component 32 in both the horizontal and vertical directions, thereby enhancing the sealing effect.

[0065] like Figures 5-7 As shown, in some embodiments, the limiting part 322 includes a first limiting part 3221 and a second limiting part 3222. The first limiting part 3221 can abut against the housing 10. The first limiting part 3221 has a first limiting surface 3201. The second limiting part 3222 is located on the side of the first limiting part 3221 away from the housing 10. The second limiting part 3222 has a second limiting surface 3202. At least a portion of the first limiting part 3221 protrudes from the outer periphery of the second limiting part 3222, thereby increasing the area of ​​the portion of the limiting part 322 that fits against the housing 10 to a certain extent, increasing the sealing effect, and at the same time avoiding the increase in cost and weight caused by the second limiting part 3222 being too large.

[0066] like Figures 5-7 As shown, in some embodiments, the pressure ring 33 includes an inner ring portion 331 and an outer ring portion 332, the outer ring portion 332 including portions along the thickness direction of the first wall portion 102 (e.g., ...). Figure 5 The inner ring portion 331, along the direction away from the first wall portion 102 (as shown in the vertical direction), is located at the first and second ends opposite each other. Figure 5 As shown, extending from bottom to top towards the conductive element 31, the inner ring 331 connects to the first end of the outer ring 332, and the inner ring 331 and the outer ring 332 are integrally connected. The second end of the outer ring 332 is connected to the side of the first wall 102 away from the center of the housing 10, that is, the outer ring 332 is located on the outer periphery of the inner ring 331 and is connected to the housing 10, thereby connecting the pressure ring 33 to the housing 10. The inner ring 331 abuts against the second limiting part 3222 to press the second limiting part 3222 onto the housing 10. The outer ring 332 abuts against the portion of the first limiting part 3221 that protrudes from the second limiting part 3222 to press the insulating element 32 onto the housing 10. That is, the shape of the pressure ring 33 matches that of the insulating element 32, thereby improving the pressing effect of the insulating element 32 on the housing 10 and improving the sealing performance.

[0067] In some embodiments, the pressure ring 33 is integrally formed with the insulating component 32 and the conductive component 31, thereby further reducing the number of parts and facilitating the assembly of the battery cell 100. For example, the pressure ring 33, the conductive component 31, and the insulating component 32 are integrally injection molded and then welded to the housing 10 at the mounting hole 101. Here, the integral injection molding can be achieved by first arranging the pressure ring 33 and the conductive component 31 on a mold, and then injection molding the insulating component 32 to form an integral structure.

[0068] Of course, the pressure ring 33 can also be an independent component, and the pressure ring 33 can be assembled separately on the housing 10.

[0069] In some embodiments, the pressure ring 33 is welded to the housing 10, which facilitates assembly and can improve the connection strength between the pressure ring 33 and the housing 10, thereby improving the sealing effect at the connection between the insulating component 32 and the housing 10.

[0070] The pressure ring 33 and the housing 10 can be made of the same material, which facilitates welding. The pressure ring 33 can be made of metal material, such as stainless steel, titanium alloy, nickel alloy, chromium alloy or aluminum alloy, thereby improving the structural strength of the pressure ring 33. The metal pressure ring 33 can be fixedly connected to the housing 10 by welding.

[0071] Of course, the pressure ring 33 can also be connected to the housing 10 by other methods such as bonding or welding.

[0072] like Figures 5-7 As shown, in some embodiments, the conductive element 31 is a metal sheet. Inside the housing, the sheet-shaped conductive element 31 can be bent to connect with the tabs of the electrode assembly 20, which facilitates welding processing.

[0073] The thickness of the sheet-like conductive element 31 can be between 0.05mm and 0.3mm.

[0074] like Figure 5 As shown, in some embodiments, the battery cell 100 further includes an insulating film 40. The insulating film 40 is disposed on the side of the first wall portion 102 near the interior of the housing 10, and the insulating film 40 is located between the electrode assembly 20 and the housing 10. The insulating film 40 has an opening, through which a portion of the conductive member 31 passes and connects to the electrode assembly 20, or through which the tab of the electrode assembly 20 passes and connects to the conductive member 31. This avoids abnormal situations such as short circuits when the electrode assembly 20 contacts the housing 10. At the same time, the insulating film 40 occupies little space, thereby increasing the space that the electrode assembly 20 can be accommodated inside the housing 10, and thus improving the volumetric energy density of the battery cell 100.

[0075] like Figure 5 As shown, in some embodiments, the insulating film 40 is adhered to the housing 10, thereby facilitating the installation of the insulating film 40.

[0076] In some embodiments, the housing 10 includes a frame 11 and a cover plate 12. An insulating film 40 may be provided on the inner peripheral wall of the frame 11. The frame 11 may have an opening. The cover plate 12 is sealed to the frame 11 to close the opening. Alternatively, the frame 11 may have openings on opposite sides. Two cover plates 12 correspond to two openings. Each cover plate 12 is sealed to the frame 11, for example, by welding. An electrical connection component 30 is provided on the frame 11. The battery cell 10 may have an electrical connection component 30. The electrical connection component 30 may be connected to the positive electrode tab of the electrode assembly 20. The housing 10 may be connected to the negative electrode tab.

[0077] Of course, the battery cell 100 may also have two electrical connection parts 30, which are respectively connected to the positive electrode tab and the negative electrode tab.

[0078] As shown in the figure, the battery cell 100 according to an embodiment of the present invention includes a housing assembly 300 according to an embodiment of the present invention. By using the housing assembly 300, the insulating member 32 and the conductive member 31 are integrally formed, which can improve the sealing performance between the insulating member 32 and the conductive member 31, and at the same time facilitate the assembly of the battery cell 100. By setting at least a portion of the insulating member 32 on the outside of the housing 10, it is not only convenient to install the insulating member 32, but also to increase the space that the electrode assembly 20 can be accommodated inside the housing 10, thereby improving the volumetric energy density of the battery cell 100.

[0079] In some embodiments, the electrode assembly 20 has tabs, and the third conductive segment 313 is connected to the tabs, for example, by direct welding. This eliminates the need for additional conductive adapters, reduces the number of parts, facilitates assembly, saves space, and increases the volumetric energy density of the battery cell 100.

[0080] like Figure 8 As shown, the battery assembly 400 according to an embodiment of the present invention includes a battery cell 100 and a circuit structure according to an embodiment of the present invention. The circuit structure and the battery cell are electrically connected. By using the battery cell 100, the insulating member 32 and the conductive member 31 are integrally formed, which can improve the sealing performance between the insulating member 32 and the conductive member 31 and facilitate assembly. By setting at least a portion of the insulating member 32 on the outside of the housing 10, it is not only convenient to install the insulating member 32, but also to increase the space that the electrode assembly 20 can be accommodated inside the housing 10, thereby improving the volumetric energy density of the battery assembly 400.

[0081] like Figure 8As shown, the electrical device 200 according to the present utility model embodiment includes a battery cell 100 or a battery assembly 400 according to the present utility model embodiment. For example, the electrical device 200 has a battery compartment, and the battery cell 100 is installed in the battery compartment. The electrical device 200 includes, but is not limited to, mobile phones, tablet computers, wearable devices, etc.

[0082] By adopting the above-mentioned battery cell 100, the insulating component 32 and the conductive component 31 are integrally formed, which can improve the sealing performance between the insulating component 32 and the conductive component 31, and at the same time facilitate the assembly of the battery cell 100. By setting at least a portion of the insulating component 32 on the outside of the housing 10, it is not only convenient to install the insulating component 32, but also increases the space that the electrode assembly 20 can be accommodated inside the housing 10, thereby improving the volumetric energy density of the battery cell 100 and improving the endurance of the electrical equipment 200.

[0083] Other configurations and operations of the battery cell 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. The vertical, horizontal, and front-back directions are defined as shown in the figures.

[0084] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Moreover, "above," "over," and "on top" of the second feature include the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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.

[0086] 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 housing assembly, characterized in that, include: The housing (10) has a first wall portion (102) having a mounting hole (101) extending through the first wall portion (102) in the thickness direction; An electrical connection component (30) is disposed on the first wall portion (102) and includes a conductive element (31) and an insulating element (32). The conductive element (31) passes through the mounting hole (101) and includes a first conductive segment (311), a second conductive segment (312), and a third conductive segment (313). The first conductive segment (311) is located outside the housing. The second conductive segment (312) connects the first conductive segment (311) and the third conductive segment (313). At least a portion of the third conductive segment (313) is located inside the housing and is adapted to be electrically connected to the electrode assembly. The insulating element (32) is disposed on the outer periphery of the second conductive segment (312) and is integrally formed with the conductive element (31). The insulating element (32) is at least partially located on the outside of the housing (10) and is sealed to the housing (10).

2. The housing assembly according to claim 1, characterized in that, The insulating member (32) includes a limiting part (322) located on the side of the first wall portion (102) away from the interior of the housing, and the limiting part (322) abuts against the first wall portion (102).

3. The housing assembly according to claim 1, characterized in that, The insulating component (32) further includes a sealing section (321), which is disposed in the mounting hole (101) and is interference-fitted with the inner wall of the mounting hole (101).

4. The housing assembly according to claim 1, characterized in that, Also includes: A pressure ring (33) is wound around at least a portion of the outer periphery of the insulating member (32) for pressing the insulating member (32) onto the housing (10), and the pressure ring (33) is fixedly connected to the housing (10).

5. The housing assembly according to claim 4, characterized in that, The insulating member (32) has a first limiting surface (3201) and a second limiting surface (3202). The first limiting surface (3201) is the side surface of the insulating member (32) that abuts against the housing (10). The second limiting surface (3202) is at least a portion of the side surface of the insulating member (32) that abuts against the pressure ring (33). Along a direction away from the first limiting surface (3201), the second limiting surface (3202) extends toward the conductive member (31).

6. The housing assembly according to claim 5, characterized in that, At least a portion of the second limiting surface (3202) is an inclined surface, and the angle between the first limiting surface (3201) and the inclined surface is α, where 20°≤α≤80°.

7. The housing assembly according to claim 5, characterized in that, The insulating member (32) includes a first limiting portion (3221) and a second limiting portion (3222). The first limiting portion (3221) is adapted to abut against the housing (10), and the second limiting portion (3222) is connected to the side of the first limiting portion (3221) opposite to the housing (10). At least a portion of the first limiting portion (3221) protrudes from the outer periphery of the second limiting portion (3222). The second limiting part (3222) has a second limiting surface (3202), and the first limiting part (3221) has a first limiting surface (3201).

8. The housing assembly according to claim 7, characterized in that, The pressure ring (33) includes an inner ring portion (331) and an outer ring portion (332). The outer ring portion (332) includes a first end and a second end opposite to each other along the thickness direction of the first wall portion (102). The inner ring portion (331) is connected to the first end, and the second end is connected to the side of the first wall portion (102) away from the center of the housing (10). The inner ring portion (331) extends in a direction away from the first wall portion (102) toward the conductive element. The inner ring portion (331) abuts against the second limiting portion (3222). The outer ring portion (332) abuts against the portion of the first limiting portion (3221) that protrudes from the second limiting portion (3222) to press the insulating element (32) onto the housing (10).

9. The housing assembly according to claim 4, characterized in that, The pressure ring (33) is integrally formed with the insulating component (32) and the conductive component (31).

10. The housing assembly according to claim 4, characterized in that, The pressure ring (33) is welded to the first wall portion (102).

11. The housing assembly according to any one of claims 1-10, characterized in that, The conductive element (31) is a metal sheet.

12. The housing assembly according to any one of claims 1-10, characterized in that, Also includes: An insulating film (40) is disposed on the side of the first wall portion (102) near the interior of the housing (10) and is adapted to be disposed between the electrode assembly (20) and the housing (10). The insulating film (40) has an opening through which a portion of the conductive element (31) passes and is connected to the electrode assembly; or, the opening allows the tabs of the electrode assembly to pass through to connect with the conductive element.

13. The housing assembly according to any one of claims 1-10, characterized in that, The housing (10) includes a frame (11) and a cover plate (12). The frame (11) has at least one opening. The cover plate (12) is sealed to the frame (11) to close the opening. The electrical connection component (30) is provided on the frame (11).

14. A single battery cell, characterized in that, It includes an electrode assembly (20) and a housing assembly according to any one of claims 1-13, wherein the electrode assembly (20) is disposed within the housing (10).

15. The battery cell according to claim 14, characterized in that, The electrode assembly (20) has tabs, and the third conductive segment is connected to the tabs.

16. A battery assembly, characterized in that, It includes a battery cell (100) according to any one of claims 14-15, and a circuit structure, wherein the circuit structure and the battery cell are electrically connected.

17. An electrical appliance, characterized in that, Includes a battery cell (100) according to any one of claims 14-15 or a battery assembly according to claim 16.

Images