Battery monomer and electric equipment

Abstract

The utility model discloses a battery monomer and electric equipment, and belongs to the field of batteries. The battery monomer comprises a shell, a plurality of battery cells and a plurality of battery cells, the pole comprises a pole body and a first connecting end, the cross sectional area of the first connecting end is larger than that of the pole body, the first connecting end and the pole body are mounted in the mounting hole, and at least part of the pole body extends out of the mounting hole; and the pole core is located in the shell, and the pole core is connected with the first connecting end through a pole lug. The structure of the pole comprises the pole body and the first connecting end of which the cross section area is larger than that of the pole body, and the first connecting end is mounted in the mounting hole of the shell and then is directly connected with the tab of the pole core, so that the internal space of the shell is saved, the space utilization rate of the single battery is higher, the current transmission impedance is smaller, and the overall performance of the battery is higher.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a battery monomer and a power consumption device. BACKGROUND

[0002] The structural design of the pole is extremely important for optimizing the space utilization rate in the battery. In the prior art, the pole is usually riveted and fixed on the shell. The pole needs to be welded with a connecting piece, and then the electric energy in the battery monomer can be transmitted to the external circuit assembly through the pole. The overlapping space of the pole and the connecting piece causes the waste of the space in the battery monomer, and further affects the improvement of the energy density of the battery. CONTENT OF THE UTILITY MODEL

[0003] The application aims to at least solve one of the technical problems in the related art. To this end, the application provides a battery monomer and a power consumption device, and the space utilization rate is high.

[0004] In a first aspect, the application provides a battery monomer, comprising:

[0005] A shell, wherein the shell is provided with a mounting hole;

[0006] A pole, wherein the pole comprises a pole body and a first connecting end, the cross-sectional area of the first connecting end is greater than that of the pole body, the first connecting end and the pole body are mounted in the mounting hole, and at least part of the pole body protrudes out of the mounting hole;

[0007] A pole core, wherein the pole core is located in the shell, and the pole core is connected with the first connecting end through a pole lug.

[0008] According to the battery monomer of the application, the structure of the pole is set as the pole body and the first connecting end with a cross-sectional area greater than that of the pole body. The first connecting end is directly connected with the pole lug of the pole core after being mounted in the mounting hole of the shell. The space in the shell is saved. The space utilization rate of the battery monomer is high. The current transmission impedance is small. The overall performance of the battery is high.

[0009] According to one embodiment of the application, a compression ring is further included, the compression ring is provided with a through hole, the compression ring is sleeved on the pole body through the through hole, and the side of the compression ring away from the shell is consistent in height with the side of the pole body away from the shell.

[0010] According to the battery monomer of the application, the compression ring and the pole are connected, and jointly serve as a connecting surface for connecting the external circuit assembly. The connection effect is better.

[0011] According to one embodiment of the present application, the pole post further comprises a second connecting end, which is located on the opposite side of the pole post body from the first connecting end, and the side of the compression ring away from the shell is in line with the side of the second connecting end away from the shell in height; wherein,

[0012] The second connecting end is used for connecting with an external circuit component,

[0013] Alternatively,

[0014] The second connecting end and the compression ring are used together for connecting with an external circuit component.

[0015] According to the battery cell of the present application, by providing a second connecting end on the pole post body, the compression ring can be fitted on the pole post body to serve as a connecting surface together with the second connecting end for connecting with an external circuit component, which allows for a larger range of assembly tolerances and higher assembly flexibility.

[0016] According to one embodiment of the present application, the cross section of the pole post has a length in a first direction that is greater than a length in a second direction, wherein the first direction extends along the width direction of the shell, and the second direction extends along the thickness direction of the shell.

[0017] According to the battery cell of the present application, by setting the cross-sectional shape of the pole post and the compression ring, the effective connection area of the first connecting end, the second connecting end, and the compression ring is increased, facilitating welding processing and achieving better connection effect.

[0018] According to one embodiment of the present application, the distance from the outer wall of the first connecting end to the pole post body is x1, wherein x1≥0.8mm.

[0019] According to the battery cell of the present application, by setting the distance range from the outer wall of the first connecting end to the pole post body, the sealing performance of the first connecting end to the mounting hole is higher.

[0020] According to one embodiment of the present application, a weld seam is formed at the connection between the compression ring and the second connecting end, the fusion width of the weld seam is x2, wherein 80μm≤x2≤165μm, the fusion depth of the weld seam is x3, and the thickness of the compression ring is x4, wherein 0.4*x4≤x3≤0.8*x4.

[0021] According to the battery cell of the present application, by setting the fusion width range of the weld seam and the relationship between the fusion depth and the thickness of the compression ring, the connection strength and sealing performance are higher, and the product quality of the battery cell is improved.

[0022] According to one embodiment of the present application, the width of the compression ring is x5, wherein x5≥0.8mm.

[0023] According to the battery cell of the present application, by setting the width of the compression ring, the compression of the compression ring to the insulating piece is better, and the air tightness of the battery cell is better.

[0024] According to one embodiment of the present application, further comprising: an upper insulating piece and a lower insulating piece, the upper insulating piece is located between the compression ring and the shell, the lower insulating piece is located between the first connecting end and the shell, and the upper insulating piece and the lower insulating piece abut.

[0025] According to the battery cell of the present application, by setting the upper insulating piece between the compression ring and the shell, and the lower insulating piece between the first connecting end and the shell, the insulation effect is guaranteed, and the sealing of the shell is better achieved to prevent liquid leakage. Meanwhile, the upper insulating piece and the lower insulating piece are used, which is easier to assemble.

[0026] According to one embodiment of the present application, the thickness of the upper insulating piece and the lower insulating piece in a natural state is x6, and the compression rate is w, wherein x6≥0.2mm, and w≥5%.

[0027] According to the battery cell of the present application, by setting the thickness and compression rate of the upper insulating piece and the lower insulating piece in a natural state, the insulation and sealing are better.

[0028] According to one embodiment of the present application, at least part of the upper insulating piece extends beyond the outer wall of the compression ring, and at least part of the lower insulating piece extends beyond the outer wall of the first connecting end.

[0029] According to the battery cell of the present application, by setting the extension range of the upper insulating piece and the lower insulating piece, the insulation and sealing are better.

[0030] According to one embodiment of the present application, the end surface area of the second connecting end is greater than the cross-sectional area of the pole body.

[0031] According to the battery cell of the present application, by setting the end surface area of the second connecting end to be greater than the cross-sectional area of the pole body after process treatment during installation, the welding is more convenient, and the welding forming quality is higher.

[0032] In a second aspect, the present application provides a power consuming device, comprising:

[0033] The battery cell as described in the above embodiments;

[0034] A power consuming body, the power consuming body is provided with a battery compartment, and the battery cell is installed in the battery compartment.

[0035] According to the power consuming device of the present application, by setting the battery cell to be installed in the battery compartment, the space utilization rate of the battery cell is higher, the current transmission impedance is smaller, and the overall performance of the battery is higher, so that the power supply efficiency of the battery cell to the power consuming body is higher, and the endurance is longer.

[0036] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings and claims.

[0038] Figure 1 is one of structural schematic diagrams of a battery cell provided by embodiments of the present application;

[0039] Figure 2 is another of structural schematic diagrams of a battery cell provided by embodiments of the present application;

[0040] Figure 3 is a sectional schematic diagram of a battery cell provided by embodiments of the present application;

[0041] Figure 4 is one of sectional schematic diagrams of a pole, a compression ring, an upper insulating member and a lower insulating member provided by embodiments of the present application;

[0042] Figure 5 is a structural schematic diagram of a pole provided by embodiments of the present application;

[0043] Figure 6 is a structural schematic diagram of a compression ring provided by embodiments of the present application;

[0044] Figure 7 is another of sectional schematic diagrams of a pole, a compression ring, an upper insulating member and a lower insulating member provided by embodiments of the present application.

[0045] LIST OF REFERENCE NUMERALS

[0046] Battery cell 1000;

[0047] Housing 100, mounting hole 110, frame 120, first cover plate 130, liquid injection hole 140;

[0048] Pole 200, pole body 210, first connecting end 220, second connecting end 230;

[0049] Pole core 300, first pole tab 310a, second pole tab 310b;

[0050] Compression ring 400, through hole 410;

[0051] Upper insulating member 510, lower insulating member 520. DETAILED DESCRIPTION

[0052] The embodiments of this application 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 application, and should not be construed as limiting this application.

[0053] The principle of the battery cell 1000 proposed in this application will be explained in detail below:

[0054] This application provides a battery cell 1000, as detailed below. Figures 1-7 A battery cell 1000 according to an embodiment of this application is described.

[0055] like Figure 1 and Figure 2 As shown, the battery cell 1000 of this application embodiment includes: a housing 100, a terminal post 200, and a terminal core 300.

[0056] The housing 100 is provided with mounting holes 110.

[0057] In this embodiment, the housing 100 may include a frame 120, a first cover plate 130 and a second cover plate. The frame 120, the first cover plate 130 and the second cover plate together form a receiving cavity, and the mounting hole 110 is provided on the frame 120.

[0058] The housing 100 can be made of metal materials such as stainless steel or titanium alloy, and no specific limitation is made in this embodiment.

[0059] like Figure 5 As shown, the pole post 200 includes a pole post body 210 and a first connecting end 220.

[0060] The cross-sectional area of ​​the first connection end 220 is larger than the cross-sectional area of ​​the pole body 210. The first connection end 220 and the pole body 210 are installed in the mounting hole 110 so that the first connection end 220 can be snapped into the mounting hole 110. At least part of the pole body 210 extends out of the mounting hole 110 for connection with external circuit components.

[0061] like Figure 3 As shown, the pole core 300 is located inside the housing 100.

[0062] The electrode core 300 can be a wound structure or a stacked structure; no specific limitation is made in this embodiment.

[0063] In this embodiment, the housing 100 encapsulates the electrode core 300 and electrolyte. The frame 120 of the housing 100 is provided with an injection hole 140. The injection hole 140 and the mounting hole 110 are located on the same side of the housing 100 to reduce the occupation of the internal space of the battery cell 1000. The injection hole 140 is sealed by a sealing component to prevent electrolyte leakage.

[0064] As shown in Figure 3 The pole core 300 is connected with the first connecting end 220 through the pole lug.

[0065] In this embodiment, the first connecting end 220 is located in the shell 100, the first connecting end 220 is not a rivet structure, has a large effective connection area, can be directly connected with the pole lug, and the welding process of the first connecting end 220 is simple, the assembly steps are few, and the sealing performance is good.

[0066] One end of the pole core 300 is provided with at least one pole lug. In this embodiment, one end of the pole core 300 can be provided with a first pole lug 310a and a second pole lug 310b, the first pole lug 310a and the second pole lug 310b have opposite polarities, the first pole lug 310a is a positive pole lug, the first pole lug 310a is connected with the first connecting end 220, and the second pole lug 310b is a negative pole lug, and the second pole lug 310b is electrically connected with the shell 100.

[0067] In the related art, the structural design of the pole column 200 is extremely important for optimizing the space utilization rate inside the battery, and the pole column 200 is usually riveted and fixed on the shell 100 in the prior art. The pole column 200 needs to be welded with a conversion sheet, and then the electric energy inside the battery monomer 1000 can be transmitted to the external circuit assembly through the pole column 200. The overlapping space of the pole column 200 and the conversion sheet will cause the waste of the internal space of the battery monomer 1000, and then affect the improvement of the energy density of the battery.

[0068] The battery monomer 1000 of this embodiment, the shell 100 is provided with a mounting hole 110, the pole column body 210 and the first connecting end 220 of the pole column 200 are installed in the mounting hole 110, the cross-sectional area of the first connecting end 220 is greater than that of the pole column body 210, the first connecting end 220 is clamped in the mounting hole 110, the pole core 300 in the shell 100 is directly connected with the first connecting end 220 through the pole lug, at least part of the pole column body 210 protrudes from the mounting hole 110 and is connected with the external circuit assembly, the pole column 200 and the pole core 300 are omitted The conductive sheet, the height of the pole column 200 is relatively reduced, the internal space of the shell 100 is saved, and the pole lug can be directly connected with the pole column 200, the pole column 200 is connected with the external circuit assembly, the current transmission impedance is small, and the overall performance of the battery can be improved.

[0069] According to the battery monomer 1000 provided by the embodiment of the application, the structure of the pole column 200 is set as the pole column body 210 and the first connecting end 220 with a cross-sectional area greater than that of the pole column body 210, the first connecting end 220 is directly connected with the pole lug of the pole core 300 after being installed in the mounting hole 110 of the shell 100, the internal space of the shell 100 is saved, the space utilization rate of the battery monomer 1000 is high, the current transmission impedance is small, and the overall performance of the battery is high.

[0070] In some embodiments, the battery cell 1000 can further include a compression ring 400.

[0071] As shown in Figures 1-4 and Figure 6 , the compression ring 400 is provided with a through hole 410, the compression ring 400 is sleeved on the pole body 210 through the through hole 410, and the side of the compression ring 400 away from the shell 100 is in line with the side of the pole body 210 away from the shell 100.

[0072] In this embodiment, after the compression ring 400 is sleeved on the pole body 210 through the through hole 410, the compression ring 400 is welded to the pole body 210, the side of the compression ring 400 away from the shell 100 is flush with the end surface of the pole body 210, and serves as a connecting surface for connecting external circuit components, which is conducive to forming a flat welding surface and improving the welding quality.

[0073] According to the battery cell 1000 provided by the embodiment of the application, the compression ring 400 and the pole 200 are connected together to serve as a connecting surface for connecting external circuit components, and the connection effect is better.

[0074] In some embodiments, the pole 200 can further include a second connecting end 230.

[0075] As shown in Figure 3 , the second connecting end 230 is located on the side of the pole body 210 opposite to the first connecting end 220, and the side of the compression ring 400 away from the shell 100 is in line with the side of the second connecting end 230 away from the shell 100.

[0076] In this embodiment, the second connecting end 230 extends out of the mounting hole 110 of the shell 100, the second connecting end 230 is welded to the compression ring 400, and the second connecting end 230 is connected to the circuit component.

[0077] The second connecting end 230 is used for connecting with the external circuit component, or the second connecting end 230 and the compression ring 400 are used together for connecting with the external circuit component. The conductive connecting end of the external circuit component can be welded to the end surface of the second connecting end 230 or to the end surface composed of the second connecting end 230 and the compression ring 400, which can allow a larger range of assembly tolerance and flexible assembly.

[0078] The pole body 210, the first connecting end 220 and the second connecting end 230 can be an integrally formed structure, which can be mass-produced and has a lower processing cost.

[0079] In the embodiment, the compression ring 400 is sleeved on the pole body 210 through the through hole 410, the compression ring 400 is welded to the pole body 210, the compression ring 400 is connected to the second connecting end 230, and the side of the compression ring 400 away from the shell 100 is flush with the end surface of the second connecting end 230 and serves as a connecting surface for connecting external circuit components, which is conducive to forming a flat welding surface and improving the welding quality.

[0080] According to the battery cell 1000 provided in the embodiment, the second connecting end 230 is arranged on the pole body 210, the compression ring 400 is sleeved on the pole body 210 and serves as a connecting surface for connecting external circuit components together with the second connecting end 230, a larger assembly tolerance is allowed, and the assembly flexibility is higher.

[0081] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 5 , the length of the cross section of the pole 200 in the first direction is greater than the length in the second direction.

[0082] The cross section of the pole 200 can be elliptical, rectangular or other irregular shapes. In the embodiment, the cross section of the pole 200 can be elliptical, which is arranged more flexibly, has higher space utilization and higher connection reliability.

[0083] The first direction extends along the width direction of the shell 100, and the second direction extends along the thickness direction of the shell 100.

[0084] In the embodiment, the first direction is the long axis direction of the ellipse, and the second direction is the short axis direction of the ellipse.

[0085] The cross section of the pole 200 can be elliptical, the long axis of the ellipse extends along the width direction of the shell 100, the short axis of the ellipse extends along the thickness direction of the shell 100, the cross section of the compression ring 400 is track-shaped, the long axis of the track-shaped extends along the width direction of the shell 100, and the short axis of the track-shaped extends along the thickness direction of the shell 100.

[0086] In this embodiment, the pole post 200 includes a columnar pole post body 210 and a first connecting end 220 and a second connecting end 230 disposed at both ends of the pole post body 210. The cross-section of the pole post 200 is elliptical, with the major axis of the ellipse extending along the width direction of the housing 100 and the minor axis extending along the thickness direction of the housing 100. That is, the dimension of the pole post 200 extending in the width direction of the housing 100 is greater than the dimension in the thickness direction of the housing 100, which can simultaneously increase the effective connection area of ​​the first connecting end 220 and the second connecting end 230, facilitating welding processing. The cross-section of the pressure ring 400 is racetrack-shaped, with the length of the racetrack extending along the width direction of the housing 100 and the width extending along the thickness direction of the housing 100, facilitating welding processing. At the same time, the edges of the pressure ring 400 are all rounded to avoid scratching other components.

[0087] In some embodiments, the cross-section of the pole post 200 may also be of other shapes.

[0088] It should be noted that this embodiment is applied to consumer square batteries. In order to achieve a thin battery design, the mounting of the terminal 200 on the frame 120 of the housing 100 is limited by the thickness direction of the battery.

[0089] According to the battery cell 1000 provided in the embodiments of this application, by setting the cross-sectional shape of the terminal post 200 and the pressure ring 400, the effective connection area of ​​the first connection end 220, the second connection end 230 and the pressure ring 400 is increased, which facilitates welding processing and results in a better connection effect.

[0090] In some embodiments, such as Figure 4 As shown, the distance from the outer wall of the first connecting end 220 to the pole body 210 can be x1, where x1≥0.8mm.

[0091] In this embodiment, the distance from the outer wall of the first connecting end 220 to the pole body 210 is 2mm to ensure effective sealing.

[0092] In some embodiments, the distance from the outer wall of the first connection end 220 to the pole body 210 can be other sizes.

[0093] According to the battery cell 1000 provided in the embodiments of this application, by setting the distance range from the outer wall of the first connection end 220 to the pole body 210, the sealing performance of the first connection end 220 to the mounting hole 110 is relatively high.

[0094] In some embodiments, such as Figure 4 As shown, a weld can be formed at the connection between the pressure ring 400 and the second connecting end 230. The weld width is x2, where 80μm≤x2≤165μm, the weld depth is x3, and the thickness of the pressure ring 400 is x4, where 0.4*x4≤x3≤0.8*x4.

[0095] In the embodiment, the connection between the compression ring 400 and the second connecting end 230 can be formed by laser welding to form a weld, the fusion width x2 of the weld is 120 μm, the fusion depth of the weld is x3, the thickness of the compression ring 400 is x4, and the fusion depth x3 of the weld accounts for 60% of the thickness x4 of the compression ring 400, so as to avoid the heat generated during welding from affecting the performance of the insulating member, while ensuring sufficient connection strength and sealing performance and ensuring product quality.

[0096] According to the battery monomer 1000 provided in the embodiment of the application, by setting the fusion width range of the weld and the relationship between the fusion depth and the thickness of the compression ring 400, the battery monomer 1000 has high connection strength and sealing performance, and the product quality of the battery monomer 1000 is improved.

[0097] In some embodiments, as shown in FIG. 5, the width of the compression ring 400 can be x5, where x5≥0.8 mm. Figure 4

[0098] In the embodiment, since the compression ring 400 surrounds the second connecting end 230, the width x5 of the compression ring 400 can be 2 mm, so as to ensure the compression effect of the compression ring 400 on the insulating member, thereby ensuring the air tightness.

[0099] According to the battery monomer 1000 provided in the embodiment of the application, by setting the width of the compression ring 400, the compression ring 400 has good compression on the insulating member, and the battery monomer 1000 has good air tightness.

[0100] In some embodiments, as shown in FIG. 5, the battery monomer 1000 can further include an upper insulating member 510 and a lower insulating member 520. Figure 3

[0101] The material of the upper insulating member 510 and the lower insulating member 520 can be high-plasticity plastic or rubber, which can be determined according to specific requirements.

[0102] The upper insulating member 510 is located between the compression ring 400 and the shell 100, the lower insulating member 520 is located between the first connecting end 220 and the shell 100, and the upper insulating member 510 and the lower insulating member 520 abut.

[0103] In the embodiment, the frame 120 of the shell 100 is provided with a mounting hole 110, the pole 200 is mounted at the mounting hole 110, and the assembly gap between the pole 200 and the hole wall of the mounting hole 110 is filled by the upper insulating member 510 and the lower insulating member 520, so as to realize the sealing of the shell 100 and prevent liquid leakage.

[0104] ​​According to the battery monomer 1000 provided in the embodiment, the upper insulating piece 510 is arranged between the compression ring 400 and the shell 100, and the lower insulating piece 520 is arranged between the first connecting end 220 and the shell 100, so that the insulation effect is ensured, the sealing of the shell 100 is better implemented, and liquid leakage is prevented, and meanwhile, the upper insulating piece 510 and the lower insulating piece 520 are used, so that the assembly is easier.

[0105] In some embodiments, as shown in Figure 4 The thickness of the upper insulating piece 510 and the lower insulating piece 520 in a natural state can be x6, and the compression rate is w, where x6≥0.2 mm and w≥5%.

[0106] In the embodiment, the thickness x6 of the upper insulating piece 510 and the lower insulating piece 520 in a natural state is 0.5 mm, and the upper insulating piece 510 and the lower insulating piece 520 have good insulation effect, the compression rate of the upper insulating piece 510 and the lower insulating piece 520 is 10%, and the upper insulating piece 510 and the lower insulating piece 520 with high compression rate can better fill the gap when subjected to pressure, and good sealing performance is provided.

[0107] It can be understood that in some embodiments, the compression rates of the upper insulating piece 510 and the lower insulating piece 520 can be different.

[0108] According to the battery monomer 1000 provided in the embodiment, the thickness and the compression rate of the upper insulating piece 510 and the lower insulating piece 520 in a natural state are set, and the insulation and the sealing are better.

[0109] In some embodiments, as shown in Figure 3 The upper insulating piece 510 can extend beyond the compression ring 400, and the lower insulating piece 520 can extend beyond the first connecting end 220.

[0110] At least part of the upper insulating piece 510 extends beyond the outer wall of the compression ring 400, and at least part of the lower insulating piece 520 extends beyond the outer wall of the first connecting end 220.

[0111] In the embodiment, the edge of the upper insulating piece 510 extends beyond the edge of the compression ring 400, and the edge of the lower insulating piece 520 extends beyond the edge of the first connecting end 220, the upper insulating piece 510 and the lower insulating piece 520 wrap the shell 100, and the compression ring 400 and the first connecting end 220 are further separated from the shell 100, so that the insulation and sealing effect are strengthened.

[0112] According to the battery monomer 1000 provided in the embodiment, the extension range of the upper insulating piece 510 and the lower insulating piece 520 is set, and the insulation and the sealing are better.

[0113] In some embodiments, the end surface area of the second connecting end 230 is greater than the cross-sectional area of the pole body 210.

[0114] As Figure 7 shown in the embodiment, the cross-sectional area of the front pole body 210 can be the same as the end surface area of the second connecting end 230 for easy assembly. After installation, the end surface area of the second connecting end 230 is larger than the cross-sectional area of the pole body 210, so that the second connecting end 230 of the pole fills the welding gap, facilitating welding and ensuring the quality of the welding shape.

[0115] The second connecting end 230 can be processed by upsetting or bulging treatment (non-riveting) and other processes during installation, so that the end surface area of the second connecting end 230 is larger than the cross-sectional area of the pole body 210. In the embodiment, no specific limitation is made.

[0116] It can be understood that the end surface of the second connecting end 230 can be slightly higher than the end surface of the pressure ring 400 during installation, so that the end surface of the second connecting end 230 is consistent with the end surface of the pressure ring 400 after the upsetting or bulging treatment of the second connecting end 230, and the end surface of the second connecting end 230 is smoother after the treatment, facilitating the subsequent connection of external circuit components.

[0117] According to the battery monomer 1000 provided by the embodiment of the application, the end surface area of the second connecting end 230 is larger than the cross-sectional area of the pole body 210 after the process treatment during installation, so that the welding is more convenient and the welding shape quality is higher.

[0118] The embodiment of the application also provides a power-using device.

[0119] The power-using device includes a battery monomer 1000 and a power-using body.

[0120] The battery monomer 1000 is the battery monomer 1000 of the above-mentioned embodiment.

[0121] The power-using body is provided with a battery compartment, and the battery monomer 1000 is installed in the battery compartment.

[0122] The battery monomer 1000 is used for power supply.

[0123] The power-using device includes but is not limited to a mobile phone, a tablet computer, a wearable device, and the like.

[0124] According to the power-using device provided by the embodiment of the application, the battery monomer 1000 is installed in the battery compartment, so that the space utilization rate of the battery monomer 1000 is higher, the current transmission impedance is smaller, and the overall performance of the battery is higher, so that the power supply efficiency of the battery monomer 1000 to the power-using body is higher, and the endurance is longer.

[0125] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular sequential or chronological order. It should be understood that the data thus used can be interchanged, where appropriate, so that the embodiments of the present application can be carried out in other than the order shown or described herein, and that the objects distinguished by "first", "second", etc. are generally of a class and are not limited in number, e.g. the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the objects before and after it are in an "or" relationship.

[0126] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0127] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

[0128] In the description of the present application, "a plurality of" means two or more.

[0129] In the description of the present application, "above" or "below" the first feature of the second feature can include direct contact of the first and second features, or indirect contact of the first and second features through another feature therebetween.

[0130] In the description of the present application, "above", "over" and "on" the first feature of the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher in level than the second feature.

[0131] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0132] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery cell, characterized by, The battery cell comprises: a shell provided with a mounting hole; a pole post comprising a pole post body and a first connecting end, the first connecting end having a cross-sectional area greater than that of the pole post body, the first connecting end and the pole post body being mounted in the mounting hole, and at least part of the pole post body extending out of the mounting hole; a pole core located in the shell, the pole core being connected to the first connecting end through a pole lug.

2. The battery cell of claim 1, wherein, Further comprising a compression ring provided with a through hole, the compression ring being sleeved on the pole post body through the through hole, and the side of the compression ring away from the shell being in line with the side of the pole post body away from the shell in height.

3. The battery cell of claim 2, wherein, The pole post further comprises a second connecting end located on the side of the pole post body opposite to the first connecting end, and the side of the compression ring away from the shell is in line with the side of the second connecting end away from the shell in height; wherein, the second connecting end is used for connecting with an external circuit component, or, the second connecting end and the compression ring are used together for connecting with an external circuit component.

4. The battery cell of claim 2, wherein, The cross section of the pole post has a length in a first direction greater than that in a second direction, wherein the first direction extends along the width direction of the shell, and the second direction extends along the thickness direction of the shell.

5. The battery cell of any one of claims 1-4, wherein, The distance from the outer wall of the first connecting end to the pole post body is x1, wherein x1≥0.8 mm.

6. The battery cell of claim 3, wherein, The connection between the compression ring and the second connecting end forms a weld, the weld having a fusion width of x2, wherein 80 μm≤x2≤165 μm, the weld having a fusion depth of x3, and the thickness of the compression ring being x4, wherein 0.4*x4≤x3≤0.8*x4.

7. The battery cell of claim 2, wherein, The width of the compression ring is x5, wherein x5≥0.8 mm.

8. The battery cell of claim 2, wherein, Further comprising: an upper insulating member located between the compression ring and the shell, and a lower insulating member located between the first connecting end and the shell, and the upper insulating member and the lower insulating member abutting against each other.

9. The battery cell of claim 8, wherein, The thickness of the upper insulating member and the lower insulating member in a natural state is x6, and the compression rate is w, wherein x6≥0.2 mm, and w≥5%.

10. The battery cell of claim 8, wherein, At least part of the upper insulating member extends beyond the outer wall of the compression ring, and at least part of the lower insulating member extends beyond the outer wall of the first connecting end.

11. The battery cell of claim 3, wherein, The end surface area of the second connecting end is greater than the cross-sectional area of the pole post body.

12. An electrical device, characterized by The battery cell comprises: a battery cell as claimed in any one of claims 1-11; a power consumer provided with a battery compartment, and the battery cell being mounted in the battery compartment.

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