Battery and electronic device

Abstract

The application discloses a battery and an electronic device, and belongs to the field of electronic devices. The battery comprises a diaphragm sleeve, a first pole piece and a second pole piece. The diaphragm sleeve comprises diaphragms which are arranged in a stack and are fixedly connected correspondingly between opposite side edges in a winding axial direction, wherein the winding axial direction is perpendicular to the stacking direction of the diaphragms. The first pole piece is arranged in a containing space between two diaphragms, and the second pole piece is arranged in a stack on a side of the diaphragm away from the first pole piece. At least one side edge of the diaphragm sleeve comprises a fixed section and a spacing section. The two diaphragms are fixedly connected at the fixed section, and the two diaphragms are spaced from each other at the spacing section, thereby forming an electrolyte channel which is in communication with the containing space.

Description

Technical Field

[0001] This application belongs to the field of electronic device technology, specifically relating to a battery and an electronic device. Background Technology

[0002] Batteries are a crucial component of electronic devices such as mobile phones, making their safety paramount. Current batteries typically consist of a positive electrode and a negative electrode, with a separator sandwiched between them to ensure insulation. However, electronic devices can be subjected to impacts and drops during use. After repeated drops, the separator in current electronic devices is prone to shrinkage, potentially causing the positive and negative electrodes to come into contact and short-circuit, leading to battery or even electronic device failure. Utility Model Content

[0003] The purpose of this application is to provide a battery and electronic device to solve the problem that current batteries are prone to shrinkage of the separator after a drop, and short circuits between the positive and negative electrodes can cause battery or even electronic device failure.

[0004] In a first aspect, embodiments of this application provide a battery comprising a separator sleeve, a first electrode, and a second electrode, wherein... The diaphragm sleeve includes stacked diaphragms, which are fixedly connected to each other on opposite sides along the winding axis, and the winding axis is perpendicular to the stacking direction of the diaphragms; the first electrode is disposed in the receiving space between the two diaphragms, and the second electrode is stacked on the side of the diaphragm opposite to the first electrode. At least one side of the diaphragm sleeve includes a fixed section and a spacer section. The portions of the two diaphragms located at the fixed section are fixedly connected, and the portions of the two diaphragms located at the spacer section are spaced apart from each other and form an electrolyte channel, which is in communication with the receiving space.

[0005] Secondly, embodiments of this application disclose an electronic device that includes the aforementioned battery.

[0006] This application discloses a battery including a separator sleeve. The separator sleeve includes stacked separators, and the separators are fixedly connected to opposite sides on both sides along the winding axis. In this case, by placing a first electrode in the receiving space between the two separators, the stacked separators can provide good insulation for the first electrode. The second electrode is stacked on the side of the separator away from the first electrode. In this case, even if the electronic device using this battery is bumped or dropped, the stacked separators, which are fixedly connected to opposite sides, can provide good insulation and restraint for the first electrode, thus preventing the first electrode in the receiving space from popping out. This ensures that the insulation reliability and continuity between the first and second electrodes are relatively good.

[0007] Furthermore, in the battery disclosed in this application embodiment, at least one side of the separator sleeve includes a fixed section and a spacer section, and the portions of the two stacked separators located at the fixed section are fixedly connected, while the portions of the two stacked separators located at the spacer section are spaced apart from each other and form an electrolyte channel. The electrolyte channel is connected to the receiving space, so that the electrolyte inside the separator sleeve can flow out to the outside of the separator sleeve through the electrolyte channel. Correspondingly, the electrolyte outside the separator sleeve can also flow into the separator sleeve through the electrolyte channel. Thus, after the first electrode and the second electrode are assembled, the electrolyte and the first electrode can still maintain a relatively good interaction relationship, thereby improving the overall performance of the battery. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of a portion of the battery structure disclosed in the embodiments of this application, including a separator and a first electrode. Figure 2 yes Figure 1 A cross-sectional schematic diagram of the structure is shown; Figure 3 This is a schematic diagram of a portion of the battery structure including the second electrode disclosed in the embodiments of this application; Figure 4 yes Figure 1 The structure and Figure 3 An assembly structure formed by assembling the structures within it; Figure 5 for Figure 4 Internal diagram of the structure; Figure 6 This is a schematic diagram of a portion of the structure of a first electrode sheet in a battery disclosed in this application, including a separator and another structure. Figure 7 yes Figure 6 The structure and Figure 3 An assembly structure formed by assembling the structures within it; Figure 8 for Figure 7Internal diagram of the structure; Figure 9 This is a schematic diagram of a portion of the structure of a first electrode in a battery disclosed in this application, which includes yet another structure. Figure 10 This is a schematic diagram of a portion of the battery structure disclosed in the embodiments of this application, including a separator and a second electrode. Figure 11 yes Figure 10 A cross-sectional schematic diagram of the structure is shown; Figure 12 This is a cross-sectional schematic diagram of the substrate layer of the second electrode disclosed in the embodiments of this application.

[0009] The attached diagram is described as follows: 100 - Diaphragm sleeve, 101 - Diaphragm, 110 - First side, 111 - First fixing section, 112 - First interval section, 120 - Second side, 121 - Second fixing section, 122 - Second interval section 210-First electrode, 220-Second electrode, 230-First tab, 240-Second tab, 251-First aluminum layer, 252-Second aluminum layer, 253-Polyester layer, 261-First solder mark, 262-Second solder mark. Detailed Implementation

[0010] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0011] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0012] like Figures 1-12 As shown in the figure, this application discloses a battery that can be applied to electronic devices.

[0013] Among them, such as Figure 1 and Figure 5As shown, the battery includes a separator sleeve 100, a first electrode 210, and a second electrode 220, wherein one of the first electrode 210 and the second electrode 220 is a positive electrode and the other is a negative electrode. The separator sleeve 100 includes stacked separators 101, each separator 101 being formed of an insulating material to provide insulation between the first electrode 210 and the second electrode 220, preventing short circuits caused by mutual contact between the first electrode 210 and the second electrode 220.

[0014] Furthermore, in the battery disclosed in this application embodiment, the stacked separator 101 is fixedly connected between its opposite sides along the winding axis, wherein the winding axis is perpendicular to the stacking direction of the separator 101. More simply, before the first electrode 210, the second electrode 220, and the separator 101 are assembled together, they are typically rectangular sheet structures. During the assembly process of the aforementioned three components, the stacked first electrode 210 and the second electrode 220 can be wound from one end along the direction surrounding the winding axis until they reach the other end. The winding direction of the first electrode 210 and the second electrode 220 is typically coplanar with the length direction of the first electrode 210. Therefore, in this application embodiment, the winding axis is the width direction of the first electrode 210. Of course, during the winding of the first electrode 210 and the second electrode 220, a diaphragm 101 needs to be sandwiched between them to ensure that the first electrode 210 and the second electrode 220 can form a mutually insulating state. Intuitively speaking, the winding axis can be as follows: Figure 1 Direction A in the middle. Additionally, it should be noted that the relationships between structures in the accompanying drawings of this application are only used to roughly express their positional relationships and do not imply any misalignment or other issues between the diaphragms 101.

[0015] During the processing, the stacked separators 101 can be bonded together to form a fixed connection between their opposite sides on the winding axis. In this case, a receiving space can be formed between the stacked separators 101. Therefore, in the battery disclosed in this application embodiment, the first electrode 210 can be disposed in the receiving space between the two separators 101. Furthermore, since the fixed connection is formed between the opposite sides of the stacked separators 101 on the winding axis, the first electrode 210 disposed in the receiving space can be limited on the winding axis, preventing the first electrode 210 from popping out of the receiving space. Thus, the stacked separators 101 can provide a more comprehensive isolation effect for the first electrode 210.

[0016] Based on the above-described assembly method of the first electrode 210, in the battery disclosed in this application embodiment, the second electrode 220 is stacked on the side of the separator 101 facing away from the first electrode 210. That is, the second electrode 220 is located outside the separator sleeve 100 and is also stacked with each separator 101 in the separator sleeve 100, ensuring that the second electrode 220 and the first electrode 210 are stacked together. In this case, the separator sleeve 100 containing the first electrode 210 and the second electrode 220 can be wound together. Specifically, the winding can start from one end of the separator sleeve 100 and the second electrode 220 along the length direction and continue to the other end of both.

[0017] As described above, by adopting the above technical solution, the first electrode 210 can be isolated by the separator sleeve 100 to form a stable mutually insulated state with the second electrode 220. Since the separators 101 stacked in the separator sleeve 100 are fixedly connected between the opposite sides on both sides in the winding axis, even if the electronic device using the battery is bumped or dropped, the first electrode 210 in the housing space will not pop out. This ensures that the insulation reliability and continuity between the first electrode 210 and the second electrode 220 are relatively good.

[0018] Of course, in order to ensure that the first electrode 210 can be well wetted by the electrolyte, during the battery assembly process, one side of the separator 101 can be fixedly connected first, and after the first electrode 210 has completed a relatively good wetting process, the other side of the separator 101 can be fixedly connected.

[0019] Meanwhile, in the battery disclosed in this application embodiment, the stacked separator 101 is fixedly connected between the opposite sides on both sides in the winding axis. In order to ensure that the first electrode 210 in the separator 101 can still interact with the electrolyte in the battery, during the battery processing, along the direction perpendicular to the thickness direction and the winding axis, that is, in the length direction of the separator 101, the opposite sides on both sides of the separator 101 are no longer fixedly connected, so that a gap can be formed between the opposite sides on both sides of the separator 101 in the length direction. The aforementioned gap can communicate with the receiving space, thereby ensuring that the electrolyte can enter the receiving space through the aforementioned gap.

[0020] To further improve the exchange efficiency between the electrolyte inside the separator sleeve 100 and the electrolyte outside the separator sleeve 100 in the battery after assembly, thereby ensuring that the interaction between the first electrode 210 and the electrolyte is always relatively good, in the battery disclosed in this application embodiment, at least one side of the separator sleeve 100 may include a fixed section and an isolation section. The portions of the two separators 101 located at the fixed section are fixedly connected, and the portions of the two separators 101 located at the isolation section are spaced apart from each other and form an electrolyte channel, which is connected to the accommodating space.

[0021] In detail, during the process of fixing the stacked diaphragm sleeves 100, a segmented fixing method can be used to fix the sides of the diaphragm 101. The fixing segments and the spacer segments are distributed along the winding direction. When the area where the side of the diaphragm 101 is located falls within the area of ​​the fixing segment, the aforementioned area of ​​the stacked diaphragm 101 can be fixed by means of bonding or other methods. However, when the area where the side of the diaphragm 101 is located falls within the area of ​​the spacer segment, the aforementioned area of ​​the diaphragm 101 is not fixed by any other means. The fixed operation ensures that the aforementioned regions of the diaphragm 101 remain stacked and relatively movable. In this case, an electrolyte channel can be formed between the aforementioned regions of the diaphragm 101. Since the receiving space is also the space formed by the diaphragms 101 clamping each other, it can be ensured that the electrolyte channel can communicate with the receiving space. This ensures that the electrolyte outside the diaphragm sleeve 100 can enter the diaphragm sleeve 100 through the electrolyte channel, and correspondingly, the electrolyte inside the diaphragm sleeve 100 can also flow out to the outside of the diaphragm sleeve 100 through the electrolyte channel.

[0022] Of course, in practical applications, there can be one or more fixed segments and spacer segments. Furthermore, the dimensions of the fixed segments and spacer segments in the winding direction can be flexibly determined according to specific circumstances, and this article does not impose any restrictions on this.

[0023] This application discloses a battery including a separator sleeve 100. The separator sleeve 100 includes stacked separators 101, and the separators 101 are fixedly connected to each other on opposite sides along the winding axis. In this case, by placing a first electrode 210 in the receiving space between the two separators 101, the stacked separators 101 can provide good insulation for the first electrode 210. The second electrode 220 is stacked on the side of the separator 101 away from the first electrode 210. In this case, even if the electronic device using this battery is bumped or dropped, the stacked separators 101, which are fixedly connected to opposite sides, can provide good insulation and restraint for the first electrode 210, so that the first electrode 210 in the receiving space will not pop out. This can ensure that the insulation reliability and continuity between the first electrode 210 and the second electrode 220 are relatively good.

[0024] Furthermore, in the battery disclosed in this application embodiment, at least one side of the separator sleeve 100 includes a fixed section and a spacer section, and the portions of the two stacked separators 101 located at the fixed section are fixedly connected, while the portions of the two stacked separators 101 located at the spacer section are spaced apart from each other and form an electrolyte channel. The electrolyte channel is connected to the accommodating space, so that the electrolyte inside the separator sleeve 100 can flow out to the outside of the separator sleeve 100 through the electrolyte channel. Correspondingly, the electrolyte outside the separator sleeve 100 can also flow into the separator sleeve 100 through the electrolyte channel. Thus, after the first electrode 210 and the second electrode 220 are assembled, the electrolyte and the first electrode 210 can still maintain a relatively good interaction relationship, thereby improving the overall performance of the battery.

[0025] As described above, at least one of the two opposing sides of the separator sleeve 100 along the winding axis may include a fixing section and a spacer section. More specifically, the separator sleeve 100 includes a first side 110 and a second side 120 opposing each other along the winding axis. Furthermore, in this embodiment, both the first side 110 and the second side 120 may include the aforementioned fixing section and spacer section. In this case, after the separator sleeve 100 and the first electrode 210 are assembled into the battery, the electrolyte can flow into the receiving space through the electrolyte channel at the first side 110 and flow out through the electrolyte channel at the second side 120 to the outside of the separator sleeve 100. This can improve the efficiency and thoroughness of electrolyte exchange between the inside and outside of the separator sleeve 100, thereby further improving the overall performance of the battery disclosed in this embodiment.

[0026] More specifically, in the battery disclosed in this application embodiment, the first side 110 includes a first fixed section 111 and a first spacer section 112. Correspondingly, portions of the two separators 101 located at the first fixed section 111 are fixedly connected, and portions of the two separators 101 located at the first spacer section 112 are spaced apart and form a first electrolyte channel, which communicates with the receiving space. Correspondingly, the second side 120 includes a second fixed section 121 and a second spacer section 122. Portions of the two separators 101 located at the second fixed section 121 are fixedly connected, and portions of the two separators 101 located at the second spacer section 122 are spaced apart and form a second electrolyte channel, which communicates with the receiving space.

[0027] In the embodiments of this application, the fixing method between the diaphragms 101 at the first fixing segment 111 can be the same as the fixing method between the diaphragms 101 at the second fixing segment 121, or the fixing methods can be different; this is not limited herein. Furthermore, the number of first fixing segments 111 included in the first side 110 can be the same as the number of second fixing segments 121 included in the second side 120, or they can be different. Similarly, the number of first interval segments 112 included in the first side 110 can be the same as the number of second interval segments 122 included in the second side 120, or they can be different; this is not limited herein.

[0028] To further improve the efficiency and thoroughness of electrolyte exchange between the inside and outside of the diaphragm sleeve 100, in one specific embodiment of this application, the number of first fixed sections 111 and first spacer sections 112 can be multiple, and these multiple first fixed sections 111 and multiple first spacer sections 112 can be alternately distributed. This ensures good fixed connection reliability between the first sides 110 of the two stacked diaphragms 101, while also guaranteeing relatively high electrolyte exchange efficiency. Of course, the dimensions of the multiple first fixed sections 111 and multiple first spacer sections 112 in the winding direction can be flexibly selected according to actual needs, and this document does not impose any limitations on them.

[0029] Similarly, in one specific embodiment of this application, the number of the second fixed segment 121 and the second interval segment 122 may also be multiple, and the second fixed segment 121 and the second interval segment 122 may be distributed alternately.

[0030] In addition, both the first electrode 210 and the second electrode 220 in the battery are provided with tabs. Specifically, the first electrode 210 is provided with a first tab 230, and the second electrode 220 is provided with a second tab 240. In order to ensure that the battery can be assembled normally, at least a portion of each of the first tab 230 and the second tab 240 needs to be able to extend beyond the separator sleeve 100 to form an electrical connection with other components.

[0031] Therefore, in the design and manufacturing process of the battery disclosed in this application embodiment, the first tab 230 can be located at the position corresponding to the electrolyte channel. On the one hand, this facilitates the assembly work between the first electrode 210 and the separator sleeve 100. On the other hand, it can also prevent the first tab 230 from hindering the formation process of the fixed section.

[0032] As described above, at least one side of the separator sleeve 100 may include one or more fixing segments and one or more spacer segments, for this purpose, during battery assembly, such as Figure 6 As shown, the first tab 230 of the first electrode 210 can be located on the side of the diaphragm sleeve 100 where the interval segment is provided. When the diaphragm sleeve 100 has multiple interval segments on the aforementioned side, the first electrode 210 can also have multiple first tabs 230, and the multiple first tabs 230 can be arranged in a one-to-one correspondence with the multiple interval segments; or, the number of interval segments provided on the side can be greater than the number of first tabs 230. In this case, it can also be ensured that any first tab 230 can be arranged in a non-repeating correspondence with an interval segment.

[0033] Based on the above embodiments, when multiple first tabs 230 correspond to multiple spacer segments respectively, during the formation of the spacer segments, it is necessary to ensure that the size of the spacer segment in the winding direction is equal to or greater than the corresponding size of the first tab 230, and as follows: Figure 6 As shown, the spacing between adjacent first tabs 230 in the winding direction can be correspondingly designed to accommodate the adjacent spacing segments of the aforementioned two first tabs 230, ensuring that after the separator sleeve 100 and the first electrode 210 and the second electrode 220 are wound, the multiple first tabs 230 can completely overlap or at least partially overlap, which facilitates the assembly of the multiple first tabs 230 with other devices. Furthermore, having multiple first tabs 230 on the first electrode 210 can also reduce the overall impedance of the battery. Therefore, in a further embodiment of this application, the second electrode 220 can also be provided with multiple second tabs 240, thereby further reducing the battery impedance.

[0034] As described above, the first side 110 of the diaphragm sleeve 100 is provided with a first interval section 112, and the second side 120 of the diaphragm sleeve 100 is provided with a second interval section 122. Therefore, during the design and processing of the diaphragm sleeve 100, the positions of the first interval section 112 and the second interval section 122 in the diaphragm sleeve 100 can also be designed.

[0035] Therefore, in one specific embodiment of this application, at least a portion of the projection of the first electrolyte channel can be located within the projection of the second electrolyte channel in a plane perpendicular to the winding axis. In this case, at least a portion of each of the first and second electrolyte channels can be aligned along the winding axis, thereby improving the mutual flow of electrolyte between the first and second electrolyte channels and further improving the efficiency of electrolyte exchange inside and outside the diaphragm sleeve 100.

[0036] Of course, when the first side 110 has a plurality of first interval segments 112 and the second side 120 has a second interval segment 122, in the aforementioned plane, the projection of at least a portion of at least one first electrolyte channel can be located within the projection of the second electrolyte channel; conversely, when the first side 110 has a first interval segment 112 and the second side 120 has a plurality of second interval segments 122, in the aforementioned plane, the projection of at least a portion of the first electrolyte channel can be located within the projection of at least one second electrolyte channel. And when the first side 110 has a plurality of first interval segments 112 and the second side 120 has a plurality of second interval segments 122, in the aforementioned plane, the projection of at least a portion of any first electrolyte channel can be located within the projection of one or more corresponding second electrolyte channels.

[0037] Optionally, when a first electrolyte channel is provided on the first side 110 and a second electrolyte channel is provided on the second side 120, at least a portion of the projection of the first electrolyte channel can be located outside the projection of any of the second electrolyte channels in a plane perpendicular to the winding axis. That is, in the battery disclosed in the embodiments of this application, at least a portion of the first electrolyte channel can be misaligned with the second electrolyte channel in the winding axis. In this case, the flow range of the electrolyte in the accommodating space can be relatively larger, thereby improving the uniformity of the interaction between the electrolyte and different regions in the first electrode 210 (including the region facing the first electrolyte channel and the region misaligned with the first electrolyte channel), further improving the thoroughness and comprehensiveness of the electrolyte exchange inside and outside the separator sleeve 100.

[0038] Similarly, when the first side 110 is provided with multiple first electrolyte channels, in a plane perpendicular to the winding axis, at least a portion of the projection of any first electrolyte channel can be located outside the projection of any second electrolyte channel, so that the interaction between the first electrode 210 and the electrolyte is relatively more uniform.

[0039] As described above, in the battery disclosed in this application, one of the first electrode 210 and the second electrode 220 is a positive electrode, and the other is a negative electrode. Based on this, in a specific embodiment of this application, the first electrode 210 can be a negative electrode, and the second electrode 220 can be a positive electrode. That is, in the assembly process of the battery disclosed in this application, such as... Figure 1 and Figure 2 As shown, the negative electrode can be accommodated in the accommodating space of the diaphragm sleeve 100, and correspondingly, the positive electrode is stacked outside the diaphragm sleeve 100.

[0040] In the above embodiments, the negative electrode plate is provided with a first tab 230, and the positive electrode plate is provided with a second tab 240. Optionally, as follows: Figure 1 As shown, the number of first tabs 230 can be one. In other embodiments of this application, such as... Figure 6 As shown, there can be multiple first tabs 230, which can reduce the overall impedance of the battery.

[0041] More specifically, both the negative electrode and the positive electrode typically include a substrate layer, and both substrate layers may contain active materials. More specifically, in this embodiment, the first electrode 210 serving as the negative electrode may include a copper substrate layer; more specifically, in this embodiment, copper foil may be used as the substrate layer of the negative electrode. When the first electrode 210 serving as the negative electrode includes a copper substrate layer, as described above, the number of first tabs 230 of the first electrode 210 can be one or more. Optionally, the first tabs 230 can be connected to the first electrode 210 by welding. In this case, the first tabs 230 can be formed of metallic nickel. When there are multiple first tabs 230, to reduce the overall processing difficulty of the first tabs 230, a die-cutting method can be used to form the copper substrate layer into a structure including the first electrode 210 and multiple first tabs 230. As for the second electrode 220 serving as the positive electrode, it may include an aluminum substrate layer; specifically, aluminum foil may be used as the substrate layer of the second electrode 220.

[0042] To improve the overall safety of the battery, in one specific embodiment of this application, such as Figure 12As shown, the second electrode 220, which serves as the positive electrode, can include a first aluminum layer 251, a second aluminum layer 252, and a polyester layer 253. The polyester layer 253 is sandwiched between the first aluminum layer 251 and the second aluminum layer 252. That is, in this embodiment, the substrate layer of the second electrode 220 can generally include a three-layer structure, and the polyester layer 253 is provided between the first aluminum layer 251 and the second aluminum layer 252. Thus, after the battery is punctured by a sharp object, the polyester layer 253 can still effectively provide insulation for the first aluminum layer 251 and the second aluminum layer 252, thereby preventing the risk of fire caused by short circuit.

[0043] When the second electrode 220, which serves as the positive electrode, adopts the above structure, in order to reduce the internal resistance of the second electrode 220, optionally, as follows: Figure 10 As shown, the second electrode 220, serving as the positive electrode, has multiple second tabs 240, and a gap S can be provided between at least two adjacent second tabs 240. This can effectively reduce the internal resistance of the second electrode 220. Of course, furthermore, a gap S can be provided between any two adjacent second tabs 240 to further reduce the internal resistance of the second electrode 220. Similarly, when the second electrode 220 has multiple second tabs 240, the multiple second tabs 240 can also be directly formed by die-cutting the substrate layer.

[0044] Optionally, during processing, both the first electrode 210 and the second electrode 220 can be laser-divided to obtain structures including a first tab 230 and a second tab 240. Then, active materials can be deposited on the substrate layers of the first electrode 210 and the second electrode 220 by coating or other methods. Furthermore, when the second electrode 220, serving as the positive electrode, has multiple second tabs 240, the dimension of each second tab 240 along the winding axis can be between 14mm and 30mm. Of course, the aforementioned dimensions can be flexibly adjusted according to the specific dimensions of the battery; this is not limited herein.

[0045] Furthermore, after the second electrode sheet 220, which has multiple second tabs 240, is wound and formed with the separator sleeve 100, the multiple second tabs 240 can be connected by ultrasonic welding to form solder marks, so that the multiple second tabs 240 can be interconnected with other devices. More specifically, the multiple first tabs 230 are connected to form a first solder mark 261, and the multiple second tabs 240 are connected to form a second solder mark 262. In addition, by installing the wound structure into the aluminum-plastic film formed by punching, the battery disclosed in the embodiments of this application can be formed through processes such as encapsulation, formation, capacity testing, OCV value and K value testing.

[0046] In the above embodiments, the first electrode 210 can be used as the negative electrode, and the negative electrode is accommodated in the accommodating space of the diaphragm sleeve 100. In another embodiment of this application, the first electrode 210 can also be used as the positive electrode. In this case, the electrode accommodated in the accommodating space of the diaphragm sleeve 100 is the positive electrode. That is, in the embodiments of this application, as... Figure 10 As shown, the first electrode 210 is the positive electrode, and the second electrode 220 is the negative electrode.

[0047] In the above embodiments of this application, the portions of the separator 101 located in the area where the fixed sections (including the first fixed section 111 and the second fixed section 121) are situated can be fixedly connected by means of bonding or other methods. In other embodiments of this application, a hot-pressing encapsulation process can also be used to form a fixed connection between the two stacked separators. Specifically, the temperature during hot-pressing bonding of the separator 101 can be between 100 and 130°C, and the hot-pressing bonding time can be between 1 and 15 seconds. In addition, in a specific embodiment of this application, the dimension of the fixed section in the winding direction can be 5-10 mm. Furthermore, in order to achieve a good fixed connection between the stacked separators 101 while minimizing the adverse effects of the overall size of the separator sleeve on the overall size of the battery, the dimension of the fixed section in the winding axis can be between 0.2 and 1.0 mm. This can minimize the dimension of the separator sleeve 100 in the winding axis, thereby resulting in a relatively high energy density for the entire battery.

[0048] Based on the battery disclosed in any of the above embodiments, this application also discloses an electronic device that includes any of the above batteries. Of course, the electronic device may also include other electronic devices such as a display module, which will not be listed here.

[0049] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0050] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A battery, characterized in that, It includes a diaphragm sleeve (100), a first electrode (210), and a second electrode (220), wherein, The diaphragm sleeve (100) includes stacked diaphragms (101), which are fixedly connected to each other on opposite sides along the winding axis, and the winding axis is perpendicular to the stacking direction of the diaphragms (101); the first electrode (210) is disposed in the receiving space between the two diaphragms (101), and the second electrode (220) is stacked on the side of the diaphragm (101) away from the first electrode (210); At least one side of the diaphragm sleeve (100) includes a fixed section and a spacer section, the portions of the two diaphragms (101) located at the fixed section are fixedly connected, and the portions of the two diaphragms (101) located at the spacer section are spaced apart from each other and form an electrolyte channel, which is in communication with the receiving space.

2. The battery according to claim 1, characterized in that, The diaphragm sleeve (100) includes a first side (110) and a second side (120) opposite each other along the winding axis, wherein, The first side (110) includes a first fixed section (111) and a first spacer section (112). The portions of the two diaphragms (101) located at the first fixed section (111) are fixedly connected. The portions of the two diaphragms (101) located at the first spacer section (112) are spaced apart from each other and form a first electrolyte channel. The first electrolyte channel is in communication with the accommodating space. The second side (120) includes a second fixed section (121) and a second spacer section (122). The portions of the two diaphragms (101) located at the second fixed section (121) are fixedly connected. The portions of the two diaphragms (101) located at the second spacer section (122) are spaced apart from each other and form a second electrolyte channel. The second electrolyte channel is in communication with the containment space.

3. The battery according to claim 2, characterized in that, The number of the first fixed segment (111) and the first interval segment (112) are both multiple, and the multiple first fixed segments (111) and the multiple first interval segments (112) are distributed alternately; And / or, there are multiple second fixed segments (121) and second interval segments (122), and the second fixed segments (121) and second interval segments (122) are distributed alternately.

4. The battery according to claim 2, characterized in that, In a plane perpendicular to the winding axis, at least a portion of the projection of the first electrolyte channel lies within the projection of the second electrolyte channel.

5. The battery according to claim 2, characterized in that, In a plane perpendicular to the winding axis, at least a portion of the projection of the first electrolyte channel lies outside the projection of any of the second electrolyte channels.

6. The battery according to claim 1, characterized in that, The first electrode (210) is a negative electrode, and the second electrode (220) is a positive electrode.

7. The battery according to claim 6, characterized in that, The first electrode (210) includes a copper substrate layer; the second electrode (220) includes a first aluminum layer (251), a second aluminum layer (252) and a polyester layer (253), wherein the polyester layer (253) is sandwiched between the first aluminum layer (251) and the second aluminum layer (252).

8. The battery according to claim 7, characterized in that, The first electrode (210) is provided with at least one first electrode tab (230), and the second electrode (220) is provided with a plurality of second electrode tabs (240), with a gap (S) between at least two adjacent second electrode tabs (240).

9. The battery according to claim 1, characterized in that, The first electrode (210) is a positive electrode, and the second electrode (220) is a negative electrode.

10. An electronic device, characterized in that, Includes the battery as described in any one of claims 1-9.

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