Single battery and electronic equipment

Abstract

The utility model discloses a single battery and electronic equipment. Each single battery comprises a battery cell, a first tab, a second tab and a packaging piece, the first tab and the second tab are respectively connected to the battery cell, and the first tab and the second tab are positioned on the same side of the battery cell; the packaging part comprises a battery cell accommodating part and a tab packaging part, the tab packaging part is communicated with the battery cell accommodating part, the tab packaging part extends away from the battery cell accommodating part in the first direction, and the size of the tab packaging part in the second direction is smaller than that of the battery cell accommodating part; wherein the first tab and the second tab are respectively provided with a bending part, the bending parts extend along the thickness direction of the battery cell, the battery cell is accommodated in the battery cell accommodating part, and each bending part is accommodated in the tab packaging part. The single battery provided by the utility model can solve the problem that the energy density of the battery is influenced due to large space waste between the battery core and the shell when the existing battery is packaged. And the endurance of the electronic equipment with the single battery is stronger.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a single battery and electronic equipment. Background Art

[0002] Batteries are widely used in various electronic products, such as mobile phones and laptops. With the update and iteration of products, improving the energy density of batteries has become the main trend of battery development. In actual production, the idea of ​​improving the space utilization of the battery after packaging and reducing the space waste of the battery shell is often adopted to improve the structure of the battery cell itself or the shell to increase the energy density of the battery.

[0003] In the related art, when packaging the battery, the tabs are folded and the folded part is placed in the shell to reduce the space occupied by the tabs in the shell, thereby improving the energy density of the battery. However, when this method is used, the space between the battery cell where the tabs are not set and the shell is not utilized, and there is still a large waste of space, which affects the energy density of the battery. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a single battery, which can improve the problem that when the existing battery is packaged, there is a large space waste between the battery core and the shell, which affects the battery energy density.

[0005] The utility model also provides an electronic device having the single battery.

[0006] According to the single battery of the first aspect embodiment of the utility model, the single battery comprises a battery cell, a first pole lug, a second pole lug and a packaging component, wherein the first pole lug is connected to the battery cell; the second pole lug is connected to the battery cell, and the first pole lug and the second pole lug are located on the same side of the battery cell; the packaging component comprises a battery cell accommodating portion and a pole lug packaging portion, the pole lug packaging portion is connected to the battery cell accommodating portion, the pole lug packaging portion extends away from the battery cell accommodating portion along a first direction, and along a second direction, the size of the pole lug packaging portion is smaller than the size of the battery cell accommodating portion, and the first direction is perpendicular to the second direction; wherein the first pole lug and the second pole lug are both provided with a bending portion, the bending portion extends along the thickness direction of the battery cell, the battery cell is accommodated in the battery cell accommodating portion, and each of the bending portions is accommodated in the pole lug packaging portion.

[0007] According to the single cell battery of the embodiment of the utility model, at least the following beneficial effects are achieved: in the single cell battery, the first pole ear and the second pole ear are respectively connected to the same side of the battery cell. When the single cell battery is used in a device, the device can set an input terminal corresponding to the position of the first pole ear and the second pole ear of the battery cell, so as to electrically connect the first pole ear and the second pole ear to ensure power supply, thereby improving the rationality of the layout of each part in the device and the convenience of installing the single cell battery. During the packaging process, when the battery cell, the first pole ear, the second pole ear and the packaging part are packaged, the battery cell is accommodated in the battery cell accommodating part of the packaging part, and each bending part is accommodated in the pole ear packaging part extending away from the battery cell accommodating part along the first direction. Then, the battery cell accommodating part and the pole ear packaging part of the packaging part can be designed according to the size of the actual battery cell, the first pole ear and the second pole ear, respectively, which improves the design of the packaging part size based on the space size required by the bending part, resulting in the waste of space caused by the single cell battery not being provided with the pole ear area after packaging. Ultimately, this method can not only improve the energy density of the single battery after packaging, but also reduce the empty space between the battery cell and the packaging component in the area without the tab, making the overall structure of the single battery cell more compact after packaging, and the battery cell is not easy to shake in the battery cell accommodating part, and the single battery is more stable.

[0008] In addition, along the second direction, the size of the tab packaging portion is smaller than the size of the cell accommodating portion, which reduces the volume of the single battery after packaging and facilitates the positioning of the tab and the cell packaging, thereby improving the packaging accuracy and packaging speed.

[0009] According to some embodiments of the utility model, the tab packaging portion includes a first packaging portion and a second packaging portion, the first tab is accommodated in the first packaging portion, and the second tab is accommodated in the second packaging portion; wherein the first packaging portion and the second packaging portion are spaced apart along the second direction.

[0010] According to some embodiments of the present invention, along the second direction, edges of the first packaging portion and the second packaging portion that are opposite to each other are respectively arranged flush with edges of the battery cell accommodating portion.

[0011] According to some embodiments of the utility model, an accommodating cavity is defined between any edge of the first pole ear along the second direction and the inner side wall opposite to the first packaging part, and the size of the accommodating cavity along the second direction is 2.0mm~15.0mm; and / or, an accommodating cavity is defined between any edge of the second pole ear along the second direction and the inner side wall opposite to the second packaging part, and the size of the accommodating cavity along the second direction is 2.0mm~15.0mm.

[0012] According to some embodiments of the utility model, the battery cell includes a battery cell body, a first pole ear portion and a second pole ear portion, the first pole ear portion and the second pole ear portion are connected to the battery cell body and both protrude from the battery cell body, the first pole ear portion is connected to the first pole ear, and the second pole ear portion is connected to the second pole ear; the first pole ear portion protrudes from the first pole ear along the second direction to form a protrusion, and the protrusion is accommodated in the accommodating cavity; and / or the second pole ear portion protrudes from the second pole ear along the second direction to form a protrusion, and the protrusion is accommodated in the accommodating cavity.

[0013] According to some embodiments of the present invention, the tab packaging portion has a tab packaging cavity, and the bending portions of the first tab and the second tab are both accommodated in the tab packaging cavity.

[0014] According to some embodiments of the present invention, one edge of the tab packaging portion along the second direction is arranged flush with an edge of the battery cell accommodating portion.

[0015] According to some embodiments of the present invention, a dimension of the tab packaging portion along the first direction is 0.3 mm to 5.0 mm.

[0016] According to some embodiments of the present invention, a distance from an edge of the battery cell along the first direction toward the tab packaging portion to an edge of the tab packaging portion away from the battery cell accommodating portion is 0.5 mm to 5.5 mm.

[0017] According to the electronic device of the embodiment of the second aspect of the utility model, the electronic device includes the single battery described in the embodiment of the first aspect of the utility model.

[0018] The electronic device according to the embodiment of the utility model has at least the following beneficial effects: the single cell is installed in the electronic device to power the electronic device. Since the single cell reduces the free space between the battery cell and the package in the area where the tab is not provided, the overall volume of the single cell is reduced and the energy density is increased. When installed in the electronic device, it occupies less installation space of the electronic device, which helps to improve the flexibility and rationality of the layout of various parts in the electronic device.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 A schematic diagram of the structure of a single battery in an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Another perspective structural diagram of a single cell is shown;

[0023] Figure 3 This is a schematic diagram of the structure of a single battery in another embodiment of the utility model;

[0024] Figure 4 for Figure 3 A local enlarged view of point A is shown;

[0025] Figure 5 This is a schematic diagram of the structure of a single battery according to another embodiment of the utility model.

[0026] Reference numerals: single cell 100;

[0027] Battery cell 110;

[0028] A first pole tab 120;

[0029] A second pole tab 130;

[0030] Bending portion 140;

[0031] Packaging member 150 ; battery cell accommodating portion 151 ; tab packaging portion 152 ; first packaging portion 1521 ; second packaging portion 1522 ; accommodating cavity 1523 ; tab packaging cavity 1524 . DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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.

[0037] The battery cell 110 formed by winding or stacking electrode sheets may have multiple electrode sheet tabs. In actual production, multiple electrode sheet tabs belonging to the positive electrode will be connected and externally connected to a positive electrode tab, and multiple electrode sheet tabs belonging to the negative electrode will be connected and externally connected to a negative electrode tab to form a basic battery structure.

[0038] In order to reduce the volume of the positive and negative electrodes during packaging, the positive and negative electrodes are usually folded, and the packaging space of the packaging member 150 is set based on the folded volume to avoid wasting a large amount of packaging space and affecting the energy density of the battery. The packaging member 150 can be an aluminum plastic film or a metal shell.

[0039] Reference Figures 1 to 5 It should be noted that Figures 1 to 5The single cell 100 of the first embodiment of the utility model comprises a battery cell 110, a first pole tab 120, a second pole tab 130 and a packaging member 150, wherein the first pole tab 120 is connected to the battery cell 110; the second pole tab 130 is connected to the battery cell 110, and the first pole tab 120 and the second pole tab 130 are located on the same side of the battery cell 110; the packaging member 150 comprises a battery cell accommodating portion 151 and a pole tab packaging portion 152, the pole tab packaging portion 152 is connected to the battery cell accommodating portion 151, and the pole tab packaging portion 152 is disposed in a first direction with the back of the battery cell 110 extending in the opposite direction. The first pole tab 120 and the second pole tab 130 are both provided with a bending portion 140, and the bending portion 140 is extended along the thickness direction of the battery cell 110. The battery cell 110 is accommodated in the battery cell accommodating portion 151, and each bending portion 140 is accommodated in the pole tab packaging portion 152. Among them, one of the first pole tab 120 and the second pole tab 130 is a positive pole tab, and the other is a negative pole tab. It should be noted that the first direction can be the length direction of the battery cell 110, and the second direction can be the width direction of the battery cell 110.

[0040] In the single battery 100, the first pole ear 120 and the second pole ear 130 are respectively connected to the same side of the battery cell 110. When the single battery 100 is used in a device, the device can set an input terminal corresponding to the position of the first pole ear 120 and the second pole ear 130 of the battery cell 110 to electrically connect the first pole ear 120 and the second pole ear 130 to ensure power supply, thereby improving the rationality of the layout of various parts in the device and the convenience of installing the single battery 100.

[0041] Along the first direction, the first pole tab 120 and the second pole tab 130 protrude from the battery cell 110. During the packaging process of the single battery cell 100, it is necessary to fold the packaging parts of the first pole tab 120 and the second pole tab 130 to form a bending portion 140, so that when the battery cell 110, the first pole tab 120, the second pole tab 130 and the packaging member 150 are packaged, the battery cell 110 is accommodated in the battery cell accommodating portion 151 of the packaging member 150, and each bending portion 140 is accommodated in the pole tab packaging portion 152 extending away from the battery cell accommodating portion 151 along the first direction. In addition, the battery cell accommodating portion 151 and the pole tab packaging portion 152 of the packaging member 150 can be designed according to the actual size of the battery cell 110, the first pole tab 120 and the second pole tab 130, respectively, which improves the design of the size of the packaging member 150 based on the space size required by the bending portion 140, resulting in space waste caused by the single battery cell 100 not being provided with a pole tab area after packaging. This method can not only improve the energy density of the single battery 100 after packaging, but also reduce the empty space between the battery cell 110 without the tab area and the packaging component 150, so that the overall structure of the single battery cell 110 after packaging is more compact, and the battery cell 110 is not easy to shake in the battery cell accommodating portion 151, and the single battery 100 is more stable.

[0042] It should be noted that the first pole tab 120 and the second pole tab 130 can be bent along the thickness direction of the battery cell 110, so that the single folding size is as large as possible, so as to maximize the use of the space in the thickness direction of the battery cell 110, reduce the volume of the bent portion 140 formed after bending, thereby reducing the overall packaging volume, and further, helping to improve the energy density of the packaged single battery 100. In addition, the size of the pole tab packaging portion 152 along the second direction is smaller than the size of the battery cell accommodating portion 151, which is convenient for locating the packaging position of the pole tab and the battery cell 110 while reducing the volume of the packaged single battery 100, thereby improving the packaging accuracy and packaging speed.

[0043] In addition, the battery cell accommodating portion has a battery cell accommodating cavity for accommodating the battery cell 110 , and the tab packaging portion has a tab packaging cavity for accommodating the first tab 120 and the second tab 130 .

[0044] The battery cell 110 of the above-mentioned single battery 100 can be formed by winding or by stacking. In the multi-electrode-tab structure battery cell 110, multiple pole tabs belonging to the positive electrode are connected and externally connected to one of the first pole tab 120 and the second pole tab 130, and multiple pole tabs belonging to the negative electrode are connected and externally connected to the other of the first pole tab 120 and the second pole tab 130.

[0045] When the single battery 100 is used in a device, the space occupied by the packaged single battery 100 in the device is reduced due to the reduction of the free space between the battery cell 110 without the tab area and the package 150, thereby helping to improve the space utilization rate in the device. The device may be a mobile phone, and the space occupied by the single battery 100 in the device is reduced. The reduced space can be used to place other components of the mobile phone, thereby improving the internal space utilization rate of the mobile phone and facilitating the optimization of the mobile phone.

[0046] Reference Figures 1 to 4 In the single cell 100 of the embodiment of the utility model, the tab packaging part 152 includes a first packaging part 1521 and a second packaging part 1522, the first tab 120 is accommodated in the first packaging part 1521, and the second tab 130 is accommodated in the second packaging part 1522; wherein the first packaging part 1521 and the second packaging part 1522 are arranged at intervals along the second direction. When the single cell 100 is packaged, the battery cell 110 is accommodated in the battery cell accommodating part 151 of the packaging member 150, and the first tab 120 and the second tab 130 are accommodated in the tab packaging part 152, wherein the first tab 120 is accommodated in the first packaging part 1521, and the second tab 130 is accommodated in the second packaging part 1522, and the first packaging part 1521 and the second packaging part 1522 are arranged at intervals along the second direction, which helps to locate the packaging positions of the first tab 120 and the second tab 130, and prevents the first tab 120 and the second tab 130 from interfering with each other. At the same time, it is also beneficial to the production and processing of the single battery 100. For example, when the first pole tab 120 and the second pole tab 130 are connected to the battery cell 110 by welding, the first packaging part 1521 and the second packaging part 1522 are arranged at intervals along the second direction, which can avoid mutual interference between the two during welding and ensure welding quality. In addition, the first packaging part 1521 and the second packaging part are arranged at intervals, which can reduce the packaging space between the two and improve the energy density of the packaged single battery 100.

[0047] When the single battery 100 is used in a device, the volume occupied in the device can be reduced, the space utilization rate of the device can be improved, and the device function expansion can be facilitated. The device can be a mobile phone. Since the first packaging part 1521 and the second packaging part are arranged at intervals, the space between the first packaging part 1521 and the second packaging part 1522 of the packaged single battery 100 can be used to place other components of the mobile phone, thereby improving the internal space utilization rate of the mobile phone.

[0048] Reference Figures 1 to 5In the single battery 100 of the embodiment of the utility model, along the second direction, the edges of the first packaging part 1521 and the second packaging part 1522 facing each other are respectively flush with the edges of the battery cell accommodating part 151. During the packaging process of the single battery 100, the battery cell 110 is accommodated in the battery cell accommodating part 151 of the packaging member 150, and the first pole tab 120 and the second pole tab 130 are accommodated in the pole tab packaging part 152, wherein the first pole tab 120 is accommodated in the first packaging part 1521, and the second pole tab 130 is accommodated in the second packaging part 1522, and along the second direction, the edges of the first packaging part 1521 and the second packaging part 1522 facing each other are respectively flush with the edges of the battery cell accommodating part 151, which is higher than that along the second direction. In the second direction, the edges of the first packaging part 1521 and the second packaging part 1522 facing each other are respectively arranged with a distance from the battery cell accommodating part 151. This method makes the structure of the packaged single battery 100 more regular. When it is used in a device, the space between the first packaging part 1521 and the second packaging part 1522 is relatively flat, which can be used to place other components in the device, thereby improving the rationality of the layout of the components in the device and also helping to improve the convenience of assembling the single battery 100 and the device.

[0049] It should be noted that the relatively regular outer contour of the above-mentioned single battery 100 can reduce the complexity of the equipment setting up the space for accommodating the single battery 100. In addition, when the package 150 is a metal shell, and the metal shell is punched out with the first packaging part 1521 and the second packaging part 1522, the shape of the stamping die is relatively simple, which helps to improve the efficiency of the die design.

[0050] In addition, the package 150 can be a metal shell, and the first packaging part 1521, the second packaging part 1522 and the battery cell accommodating part 151 are shell structures with accommodating cavities formed by stamping, and the relative cavity walls of the first packaging part 1521 and the second packaging part 1522 are flush with the cavity walls of the battery cell accommodating part 151, which helps to simplify the stamping mold design process and improve the efficiency of the stamping step; the package 150 can be an aluminum-plastic film, and the relative cavity walls of the first packaging part 1521 and the second packaging part 1522 are flush with the cavity walls of the battery cell accommodating part 151, which helps to simplify the head structure used for top sealing during packaging and reduce production costs.

[0051] Reference Figures 1 to 5 In the single battery 100 of the embodiment of the utility model, a receiving cavity 1523 is defined between any edge of the first pole tab 120 along the second direction and the inner side wall opposite to the first packaging portion 1521, and the size of the receiving cavity 1523 along the second direction is 2.0 mm to 15.0 mm; and / or, a receiving cavity 1523 is defined between any edge of the second pole tab 130 along the second direction and the inner side wall opposite to the second packaging portion 1522, and the size of the receiving cavity 1523 along the second direction is 2.0 mm to 15.0 mm.

[0052] The above structure enables that during the packaging process of the single battery 100, the battery cell 110 is accommodated in the battery cell accommodating portion 151 of the packaging member 150, the bent portion 140 of the first pole ear 120 is accommodated in the first packaging portion 1521, and the bent portion 140 of the second pole ear 130 is accommodated in the second packaging portion 1522. While ensuring sufficient accommodating space, the first pole ear 120 and the second pole ear 130 reduce the size of the first packaging portion 1521 and the second packaging portion 1522 to improve the energy density of the packaged single battery 100, wherein the size of the accommodating cavity 1523 along the first direction is 2.0 mm to 15.0 mm, that is, Figure 1 and Figure 4 The distance represented by H1.

[0053] In the first embodiment, when the single battery 100 is packaged, the battery cell 110 is accommodated in the battery cell accommodating portion 151 of the packaging member 150, the bent portion 140 of the first pole tab 120 is accommodated in the first packaging portion 1521, and the bent portion 140 of the second pole tab 130 is accommodated in the second packaging portion 1522. In the projection along the thickness direction of the battery cell 110, an accommodating cavity 1523 is defined between any edge of the first pole tab 120 along the second direction and the inner side wall opposite to the first packaging portion 1521, and the size of the accommodating cavity 1523 along the second direction is 2.0 mm to 15.0 mm.

[0054] In the second embodiment, when the single battery 100 is packaged, the battery cell 110 is accommodated in the battery cell accommodating portion 151 of the packaging member 150, the bent portion 140 of the first pole tab 120 is accommodated in the first packaging portion 1521, and the bent portion 140 of the second pole tab 130 is accommodated in the second packaging portion 1522. An accommodating cavity 1523 is defined between any edge of the second pole tab 130 along the second direction and the inner side wall opposite to the second packaging portion 1522, and the size of the accommodating cavity 1523 along the second direction is 2.0 mm to 15.0 mm.

[0055] In the third embodiment, when the single battery 100 is packaged, the battery cell 110 is accommodated in the battery cell accommodation portion 151 of the packaging member 150, the bent portion 140 of the first pole tab 120 is accommodated in the first packaging portion 1521, and the bent portion 140 of the second pole tab 130 is accommodated in the second packaging portion 1522. An accommodation cavity 1523 is defined between any edge of the first pole tab 120 along the second direction and the inner side wall opposite to the first packaging portion 1521, and the size of the accommodation cavity 1523 along the second direction is 2.0 mm to 15.0 mm, and an accommodation cavity 1523 is defined between any edge of the second pole tab 130 along the second direction and the inner side wall opposite to the second packaging portion 1522, and the size of the accommodation cavity 1523 along the second direction is 2.0 mm to 15.0 mm.

[0056] It should be noted that when the single battery 100 is formed by winding or lamination, there are multiple stacked pole tabs corresponding to the positive pole tab and negative pole tab connection parts. When encapsulating, these pole tabs need to occupy the packaging space of the package 150. Taking the pole tabs belonging to the positive pole tab part as an example, multiple pole tabs are stacked and connected along the thickness direction of the battery cell 110, and one of the pole tabs is used as a reference. The remaining pole tabs protrude from the reference pole tab along the second direction and can be accommodated in the above-mentioned accommodation cavity 1523 to reduce the impact of overlapping connection of multiple pole tabs and inaccurate alignment, thereby ensuring the quality of the single battery 100. Similarly, when the pole tabs belonging to the negative pole tab connection part are stacked, inaccurate alignment may also occur. The provision of the accommodation cavity 1523 can reduce the impact of this situation and ensure the packaging of the single battery 100.

[0057] In addition, the size of the accommodating cavity 1523 along the second direction is 2.0 mm to 15.0 mm, which can ensure a smooth packaging process of the single battery 100 while reducing the waste of the overall packaging space of the packaging component 150 and improving the energy density of the single battery 100.

[0058] Reference Figures 1 to 5 In the single cell battery 100 of the embodiment of the utility model, the battery cell 110 includes a battery cell body, a first pole ear portion and a second pole ear portion, the first pole ear portion and the second pole ear portion are connected to the battery cell body and both protrude from the battery cell body, the first pole ear portion is connected to the first pole ear 120, and the second pole ear portion is connected to the second pole ear 130; the first pole ear portion protrudes from the first pole ear 120 along the second direction to form a protruding portion, and the protruding portion is accommodated in the accommodating cavity 1523; and / or, the second pole ear portion protrudes from the second pole ear 130 along the second direction to form a protruding portion, and the protruding portion is accommodated in the accommodating cavity 1523.

[0059] When the single battery 100 is packaged, during the packaging process of the single battery 100, the battery cell 110 is accommodated in the battery cell accommodating portion 151 of the packaging component 150, the connection between the first pole ear 120 and the first pole ear portion is accommodated in the first packaging portion 1521, and the connection between the second pole ear 130 and the second pole ear portion is accommodated in the second packaging portion 1522, so that the first pole ear portion protrudes from the first pole ear 120 along the second direction to form a protrusion, and the protrusion is accommodated in the accommodating cavity 1523, and / or the second pole ear portion protrudes from the second pole ear 130 along the second direction to form a protrusion, and the protrusion is accommodated in the accommodating cavity 1523, thereby ensuring the smooth packaging of the battery cell 110, the first pole ear 120 and the second pole ear 130, and improving the packaging quality.

[0060] In the first embodiment, the battery cell 110 includes a battery cell body, a first pole ear portion and a second pole ear portion, the first pole ear portion and the second pole ear portion are connected to the battery cell body and both protrude from the battery cell body, the first pole ear portion is connected to the first pole ear 120, and the second pole ear portion is connected to the second pole ear 130; the first pole ear portion protrudes from the first pole ear 120 along the second direction to form a protruding portion, and the protruding portion is accommodated in the accommodating cavity 1523 to ensure the packaging quality.

[0061] In the second embodiment, the battery cell 110 includes a battery cell body, a first pole ear portion and a second pole ear portion, the first pole ear portion and the second pole ear portion are connected to the battery cell body and both protrude from the battery cell body, the first pole ear portion is connected to the first pole ear 120, and the second pole ear portion is connected to the second pole ear 130; the second pole ear portion protrudes from the second pole ear 130 along the second direction to form a protruding portion, and the protruding portion is accommodated in the accommodating cavity 1523 to ensure the packaging quality.

[0062] In the third embodiment, the battery cell 110 includes a battery cell body, a first pole ear portion and a second pole ear portion, the first pole ear portion and the second pole ear portion are connected to the battery cell body and both protrude from the battery cell body, the first pole ear portion is connected to the first pole ear 120, and the second pole ear portion is connected to the second pole ear 130; the first pole ear portion protrudes from the first pole ear 120 along the second direction to form a protrusion, and the protrusion is accommodated in the accommodating cavity 1523, and the second pole ear portion protrudes from the second pole ear 130 along the second direction to form a protrusion, and the protrusion is accommodated in the accommodating cavity 1523, so as to ensure the packaging quality.

[0063] It should be noted that when the battery cell 110 is formed by winding or lamination, there are multiple pole pieces and tabs, a part of which is stacked and connected to form a first pole tab portion, and another part is stacked and connected to form a second pole tab portion, the first pole tab portion is connected to the first pole tab 120, and the second pole tab portion is connected to the second pole tab 130. Taking the pole piece tab belonging to the first pole tab portion as an example, multiple pole piece tabs are stacked and connected along the thickness direction of the battery cell 110, and one of the pole piece tabs is used as a reference. The remaining pole piece tabs protrude from the reference pole piece tab along the second direction and can be accommodated in the above-mentioned accommodation cavity 1523, so as to reduce the impact of overlapping connection of multiple pole piece tabs and inaccurate alignment, and ensure the quality of the single battery 100. Similarly, when the pole piece tabs belonging to the second pole tab portion are stacked, the situation of inaccurate alignment may also occur. The setting of the accommodation cavity 1523 can reduce the impact of this situation and ensure the packaging of the single battery 100.

[0064] In addition, the size of the accommodating cavity 1523 along the first direction is 2.0 mm to 15.0 mm, which can ensure a smooth packaging process of the single battery 100 while reducing the waste of the overall packaging space of the packaging component 150 and improving the energy density of the single battery 100.

[0065] Reference Figures 1 to 5 In the single cell 100 of the embodiment of the utility model, the tab packaging part 152 has a tab packaging cavity 1524, and the bending parts 140 of the first tab 120 and the second tab 130 are both accommodated in the tab packaging cavity 1524. When the single cell 100 is packaged, the battery cell 110 is accommodated in the battery cell accommodation part 151 of the packaging member 150, and the first tab 120 and the second tab 130 are accommodated in the tab packaging part 152, wherein the bending parts 140 of the first tab 120 and the second tab 130 are both accommodated in the tab packaging cavity 1524. Compared with the manner in which the first packaging part 1521 and the second packaging part 1522 are arranged at intervals along the second direction, this structure facilitates the processing or production of the packaging member 150, and at the same time makes the structure of the single cell 100 after packaging more regular. When the single cell 100 of this structure is applied to the equipment, it can better cooperate with the components in the equipment for assembly, optimize the layout of the components in the equipment installation space, and improve the space utilization and neatness.

[0066] It should be noted that, in the above embodiment, the tab packaging portion 152 may be an integrated structure, and a cavity may be formed inside thereof as the tab packaging cavity 1524 .

[0067] In addition, if the package 150 is a metal shell, the above structure is convenient for simplifying the design of the metal shell stamping mold and reducing the mold design and manufacturing costs; if the package 150 is an aluminum-plastic film, the above structure is convenient for simplifying the head structure used for top sealing during packaging and reducing the head design and manufacturing costs.

[0068] Reference Figures 1 to 5 In the single cell 100 of the embodiment of the utility model, one of the edges of the tab packaging part 152 along the second direction is flush with the edge of the battery cell accommodating part 151. When the single cell 100 is packaged, the battery cell 110 is accommodated in the battery cell accommodating part 151 of the packaging part 150, and the first tab 120 and the second tab 130 are accommodated in the tab packaging part 152, wherein the bending portion 140 of the first tab 120 and the second tab 130 are both accommodated in the tab packaging cavity 1524, and at the same time, one of the edges of the tab packaging part 152 along the second direction is flush with the edge of the battery cell accommodating part 151, so that the structure of the packaging part 150 is relatively flat, which can simplify the processing steps of the packaging part 150 or shorten the production time, and then, the structure of the single cell 100 after packaging is relatively regular, and when applied to equipment, the assembly is more convenient and efficient.

[0069] Reference Figure 1 and Figure 2 In the single cell 100 of the embodiment of the utility model, the dimension of the tab packaging portion 152 along the first direction is 0.3 mm to 5.0 mm, that is, Figure 1The dimension of the tab packaging part 152 along the first direction is 0.3 mm to 5.0 mm, which can ensure that the bending part 140 of the first tab 120 and the second tab 130 can be accommodated in the tab packaging part 152, and the packaging process of the single battery 100 is smooth, while reducing the waste of the overall packaging space of the packaging part 150 and improving the energy density of the single battery 100.

[0070] Reference Figures 1 to 3 In the single battery 100 of the embodiment of the utility model, the distance from the edge of the battery cell 110 along the first direction toward the tab packaging portion 152 to the edge of the tab packaging portion 152 away from the battery cell accommodating portion 151 is 0.5 mm to 5.5 mm. Figure 1 The distance represented by H3 in the figure. During the packaging process of the single battery 100, the battery cell 110 is accommodated in the battery cell accommodating portion 151 of the packaging member 150, and the first pole tab 120 and the second pole tab 130 are accommodated in the pole tab packaging portion 152. The projection along the thickness direction of the battery cell 110 is 0.5 mm to 5.5 mm from the edge of the battery cell 110 along the first direction toward the pole tab packaging portion 152 to the edge of the pole tab packaging portion 152 away from the battery cell accommodating portion 151. This can reduce the waste of the overall packaging space of the packaging member 150 while ensuring that the packaging space of each bending portion 140 is sufficient, thereby improving the energy density of the single battery 100.

[0071] Reference Figures 1 to 5The electronic device of the second embodiment of the utility model includes the single cell 100 of the first embodiment of the utility model. The electronic device has a housing cavity, and the housing cavity is used to accommodate the single cell 100 and other components. In the single cell 100, the first pole ear 120 and the second pole ear 130 are respectively connected to the same side of the battery cell 110. When the single cell 100 is used in the device, the device can be provided with an input terminal corresponding to the position of the first pole ear 120 and the second pole ear 130 of the battery cell 110, so as to electrically connect the first pole ear 120 and the second pole ear 130 to ensure power supply, thereby improving the rationality of the layout of each part in the device and the convenience of installing the single cell 100. During the packaging process of the single battery 100, the battery cell 110 is accommodated in the battery cell accommodating portion 151 of the packaging member 150, and each bending portion 140 is accommodated in the tab packaging portion 152 extending away from the battery cell accommodating portion 151 along the first direction. Therefore, the battery cell accommodating portion 151 and the tab packaging portion 152 of the packaging member 150 can be designed according to the size of the actual battery cell 110, the first tab 120 and the second tab 130, respectively, which improves the design of the size of the packaging member 150 based on the required space size of the bending portion 140, resulting in the waste of space caused by the absence of the tab area in the packaged single battery 100. This method can not only improve the energy density of the packaged single battery 100, but also reduce the free space between the battery cell 110 and the packaging member 150 without the tab area, so that the overall structure of the packaged single battery cell 110 is more compact, and the battery cell 110 is not easy to shake in the battery cell accommodating portion 151, and the stability of the single battery cell 100 is higher. Finally, when the single battery 100 is accommodated in the accommodating cavity and used to power the electronic device, the single battery reduces the free space between the battery cell 110 without the tab area and the package, so the overall volume of the single battery is reduced and the energy density is increased. When installed in the electronic device, it occupies less installation space of the electronic device, which helps to improve the flexibility and rationality of the layout of various parts in the electronic device.

[0072] It should be noted that, since this embodiment adopts the single cell of the first embodiment, this embodiment has all the beneficial effects brought by the first embodiment, which will not be described again here.

[0073] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A single cell, characterized in that: include: Battery cells; A first pole tab, wherein the first pole tab is connected to the battery cell; A second pole lug, wherein the second pole lug is connected to the battery cell, and the first pole lug and the second pole lug are located on the same side of the battery cell; A packaging component, wherein the packaging component comprises a battery cell accommodating portion and a tab packaging portion, wherein the tab packaging portion is connected to the battery cell accommodating portion, the tab packaging portion is extended away from the battery cell accommodating portion along a first direction, and along a second direction, the size of the tab packaging portion is smaller than the size of the battery cell accommodating portion, and the first direction is perpendicular to the second direction; Wherein, the first pole tab and the second pole tab are both provided with a bending portion, the bending portion is extended along the thickness direction of the battery cell, the battery cell is accommodated in the battery cell accommodating portion, and each of the bending portions is accommodated in the pole tab packaging portion.

2. The single cell according to claim 1, characterized in that: The tab packaging portion includes a first packaging portion and a second packaging portion, the first tab is accommodated in the first packaging portion, and the second tab is accommodated in the second packaging portion; Wherein, the first packaging part and the second packaging part are arranged at intervals along the second direction.

3. The single cell according to claim 2, characterized in that: Along the second direction, the edges of the first packaging portion and the second packaging portion that are opposite to each other are respectively arranged flush with the edges of the battery cell accommodating portion.

4. The single cell according to claim 2, characterized in that: An accommodating cavity is defined between any edge of the first tab along the second direction and the inner side wall opposite to the first packaging portion, and the size of the accommodating cavity along the second direction is 2.0 mm to 15.0 mm; And / or, an accommodation cavity is defined between any edge of the second electrode tab along the second direction and the inner side wall opposite to the second packaging portion, and a size of the accommodation cavity along the second direction is 2.0 mm to 15.0 mm.

5. The single cell according to claim 4, characterized in that: The battery cell comprises a battery cell body, a first pole ear portion and a second pole ear portion, wherein the first pole ear portion and the second pole ear portion are connected to the battery cell body and both protrude from the battery cell body, the first pole ear portion is connected to the first pole ear, and the second pole ear portion is connected to the second pole ear; The first pole ear portion protrudes from the first pole ear along the second direction to form a protruding portion, and the protruding portion is accommodated in the accommodating cavity; And / or, the second pole ear portion protrudes from the second pole ear along the second direction to form a protruding portion, and the protruding portion is accommodated in the accommodating cavity.

6. The single cell according to claim 1, characterized in that: The tab packaging portion has a tab packaging cavity, and the bending portions of the first tab and the second tab are both accommodated in the tab packaging cavity.

7. The single cell according to claim 1, characterized in that: One edge of the tab packaging portion along the second direction is flush with an edge of the battery cell accommodating portion.

8. The single cell according to claim 1, characterized in that: The dimension of the tab packaging portion along the first direction is 0.3 mm to 5.0 mm.

9. The single cell according to claim 1, characterized in that: A distance between an edge of the battery cell along the first direction facing the tab packaging portion and an edge of the tab packaging portion away from the battery cell accommodating portion is 0.5 mm to 5.5 mm.

10. An electronic device, characterized in that The invention comprises a housing and a plurality of single cells according to any one of claims 1 to 9.

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