Battery assembly and electronic device comprising same

Abstract

A battery assembly is provided. The battery assembly may comprise: a plurality of electrode layers arranged in a stacked manner, wherein at least one of the plurality of electrode layers has a curved shape with respect to one plane and includes a positive electrode plate, a negative electrode plate, a separator disposed between the positive electrode plate and the negative electrode plate, at least one positive electrode tab connected to the positive electrode plate, and at least one negative electrode tab connected to the negative electrode plate; separators disposed between two adjacent electrode layers among the plurality of electrode layers; a first conductive portion coupled to positive electrode tabs of the plurality of electrode layers; and a second conductive portion coupled to negative electrode tabs of the plurality of electrode layers. At least two positive electrode tabs corresponding to different electrode layers among the positive electrode tabs may be welded. At least two negative electrode tabs corresponding to different electrode layers among the negative electrode tabs may be welded.

Description

Battery assembly and electronic device including the same

[0001] The present disclosure relates to a battery assembly and an electronic device comprising the battery assembly.

[0002] The electronic device may include a battery. The battery may include a positive electrode, a negative electrode, a separator, and / or an electrolyte. As ions move from the positive electrode through the separator to the negative electrode, an electric current is generated, through which energy can be stored and released.

[0003] The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure.

[0004] In embodiments of the present disclosure, a battery assembly is provided. The battery assembly may comprise a plurality of electrode layers stacked thereon, wherein at least one electrode layer among the plurality of electrode layers comprises a positive plate, a negative plate, a separator disposed between the positive plate and the negative plate, at least one positive tab connected to the positive plate, and at least one negative tab connected to the negative plate, having a shape curved with respect to one plane; separators disposed between two adjacent electrode layers among the plurality of electrode layers; a first conductive portion coupled to the positive tabs of the plurality of electrode layers; and a second conductive portion coupled to the negative tabs of the plurality of electrode layers. Among the positive tabs, at least two positive tabs corresponding to different electrode layers may be welded. Among the negative tabs, at least two negative tabs corresponding to different electrode layers may be welded. The welded at least two positive tabs may be aligned in a first linear direction toward a central region of the curved shape. At least two of the welded cathode tabs can be aligned in a second linear direction toward the center region of the curved shape.

[0005] In embodiments of the present disclosure, an electronic device is provided. The electronic device may include a battery assembly having a curved shape; and a power circuit connected to the battery assembly. The battery assembly may include a plurality of electrode layers stacked thereon, wherein at least one electrode layer among the plurality of electrode layers has a curved shape with respect to one plane and includes a positive plate, a negative plate, a separator disposed between the positive plate and the negative plate, at least one positive tab connected to the positive plate, and at least one negative tab connected to the negative plate; separators disposed between two adjacent electrode layers among the plurality of electrode layers; a first conductive portion coupled to the positive tabs of the plurality of electrode layers; and a second conductive portion coupled to the negative tabs of the plurality of electrode layers. Among the positive tabs, at least two positive tabs corresponding to different electrode layers may be welded. Among the negative tabs, at least two negative tabs corresponding to different electrode layers may be welded. The welded at least two positive tabs may be aligned in a first linear direction toward a central region of the curved shape. At least two of the welded cathode tabs can be aligned in a second linear direction toward the center region of the curved shape.

[0006] Figure 1 shows an example of an electrode layer.

[0007] Figure 2 shows an example of a battery assembly including electrode layers having a curved shape.

[0008] Figure 3a shows an example of positive tabs of electrode layers having a curved shape.

[0009] Figure 3b shows an example of cathode tabs of electrode layers having a curved shape.

[0010] FIGS. 4a and FIGS. 4b show examples of battery assemblies including conductive parts and lead tabs.

[0011] Figure 5 is a diagram illustrating the alignment of electrode tabs of electrode layers having a curved shape.

[0012] FIGS. 6A and 6B show examples of the arrangement of electrode layers and aligned electrode tabs of a battery assembly.

[0013] Figures 7a and 7b show examples of battery assemblies including unaligned electrode tabs.

[0014] FIGS. 8A, FIGS. 8B, and FIGS. 8C show examples of battery assemblies including a battery protection circuit.

[0015] FIGS. 9A, FIGS. 9B, and FIGS. 9C show examples of electronic devices including a battery assembly.

[0016] Figure 10 is a block diagram of an electronic device in a network environment.

[0017] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit the scope of other embodiments. A singular expression may include a plural expression unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art described in this disclosure. Terms used in this disclosure that are defined in a general dictionary may be interpreted as having the same or similar meaning as they have in the context of the relevant technology, and are not to be interpreted in an ideal or overly formal sense unless explicitly defined in this disclosure. In some cases, even terms defined in this disclosure are not to be interpreted to exclude the embodiments of this disclosure.

[0018] In the various embodiments of the present disclosure described below, a hardware-based approach is described as an example. However, since the various embodiments of the present disclosure include techniques using both hardware and software, the various embodiments of the present disclosure do not exclude a software-based approach.

[0019] Terms used in the following description to refer to parts of an electronic device (e.g., positive plate, negative plate, positive material, negative material, separator, positive tab, negative tab, device, circuit, chip, substrate, PCB (print circuit board), FPCB (flexible PCB), component, device), terms referring to the shape of a part (e.g., structure, structure, support part, contact part, protrusion), terms referring to connections between structures (e.g., connection part, curved part, non-curved part, contact part, support part, contact structure, conductive member, assembly), etc., are provided as examples for convenience of explanation. Accordingly, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may be used. Furthermore, terms such as '...part', '...device', '...object', '...body', etc. used below may refer to at least one shape structure or a unit that processes a function.

[0020] Additionally, in this disclosure, expressions such as "greater than" or "less than" may be used to determine whether a specific condition is satisfied or fulfilled; however, this is merely for the purpose of expressing an example and does not exclude descriptions of "greater than" or "less than." Conditions described as "greater than" may be replaced with "greater than," conditions described as "less than" may be replaced with "less than," and conditions described as "greater than and less than" may be replaced with "greater than and less than." Furthermore, "A" to "B" below refer to at least one of the elements from A (including A) to B (including B). Below, "C" and / or "D" refers to at least one of "C" or "D," i.e., including {"C," "D," and "C" and "D"}. Below, the meaning of "approximately E" may be substituted with a value within an error range of ±5% or ±10% relative to E, as an example not limited unless otherwise defined.

[0021] Figure 1 shows an example of an electrode layer.

[0022] Referring to FIG. 1, the electrode layer (100) may include a positive electrode (130), a negative electrode (140), and a separator (150). The positive electrode (130) may be configured to store and release electricity through the flow of electrons. The negative electrode (140) may be configured to store electrons from the positive electrode. For example, the positive electrode (130) may have a structure in which a positive active material layer is coated on a positive electrode substrate. For example, the negative electrode (140) may have a structure in which a negative active material layer is coated on a negative electrode substrate. The separator (150) may be placed between the positive electrode (130) and the negative electrode (140). The separator (150) may prevent the two electrodes from coming into direct contact and may provide a path for ions (e.g., lithium ions) to move. The positive electrode tab (135) may represent a protruding portion to provide an electrical connection to an external circuit (or external device) with the positive plate of the positive electrode (130) of the electrode layer (100). As an example not limited to, the positive tab (135) may be made of aluminum. The negative tab (145) may represent a protruding portion to provide an electrical connection to an external circuit (or external device) with the negative plate of the negative electrode (140) of the electrode layer (100). As an example not limited to, the negative electrode (140) may be made of copper. The electrical connections may cause an electrochemical reaction to the electrode layer (100). The electrode layer (100) may represent a layer unit where the electrochemical reaction takes place. The electrode layer (100) may be configured to store and release energy.

[0023] The electrode layer (100) according to embodiments of the present disclosure may include various structures. According to various embodiments, the electrode layer (100) may refer to one anode layer (130), one cathode layer (140), and at least one separator (150), for example, as shown in FIG. 1. The separator (150) may be disposed between the anode layer (130) and the cathode layer (140). According to various embodiments, the electrode layer (100) may refer to, for example, one anode layer (130) or a cathode layer (140). According to various embodiments, the electrode layer (100) may refer to, for example, two anode layers (130), one cathode layer (140), and two or more separators. As an example, the electrode layer (100) may include a structure in which an anode layer, a separator, a cathode layer, a separator, and an anode layer are stacked in that order. According to various embodiments, the electrode layer (100) may refer, for example, to two cathode layers (140), one anode (130), and two or more separators. As an example, the electrode layer (100) may include a structure in which a cathode layer, a separator, an anode layer, a separator, and a cathode layer are stacked in that order.

[0024] With the development of various types of devices (e.g., smart rings, wearables, wrist-worn smartphones), there is a demand for the production of batteries with a curved shape (hereinafter referred to as curved batteries). For curved batteries, a method can be used in which flat electrode layers are laminated and then subjected to thermocompression molding to obtain curvature. However, due to such external forces, the curved electrode layers may be exposed to high temperatures or undergo electrode swelling during charging and discharging. Furthermore, when external forces are applied to the electrode layers, it is difficult to maintain the curvature. In addition, due to shear stress during pressurization, the internal electrode plates may be pushed unevenly, causing a short circuit or separation between the separator and the electrode, which may degrade battery performance. Moreover, at the pushed-out ends of the battery, there is no contact between adjacent electrodes, making it difficult to achieve the desired battery capacity. In embodiments of the present disclosure, a battery assembly for solving the above-described problem is described having a stacked structure of electrode layers composed of a positive electrode (e.g., positive electrode (130)), a negative electrode (e.g., negative electrode (140)), and a separator (140)).

[0025] Figure 2 shows an example of a battery assembly including electrode layers having a curved shape.

[0026] Referring to FIG. 2, a battery assembly (201) may include a plurality of electrode layers. A separator may be disposed between each electrode layer. For example, the plurality of electrode layers may include a first electrode layer (211), a second electrode layer (212), a third electrode layer (213), a fourth electrode layer (214), and a fifth electrode layer (215). For each electrode layer, the description of the electrode layer (100) in FIG. 1 may be referenced. According to embodiments of the present disclosure, each of the plurality of electrode layers may have a curved shape. Each of the plates (e.g., positive plate, negative plate, separator) and / or separators of each electrode layer may have a curved shape. The plurality of electrode layers having a curved shape, which are stacked sequentially in one direction, may be referred to as an assembly (230). For a curved battery, each of the electrode layers of the assembly (230) may have a curved shape on one plane. The electrode layers having the above-described curved shape can be stacked in a direction perpendicular to the above-described plane. As a non-limiting example, the electrode layers can be stacked using a jig having curvature. Due to the jig, stress inside the electrode plate can be prevented when pressure is applied after stacking.

[0027] According to embodiments of the present disclosure, the electrode layers of the assembly (230) may have different lengths. Here, the length of the electrode layer may represent the length of the curve of the electrode layer when the assembly (230) is viewed in one direction. For example, the length may correspond to the length of the curve among the curved surfaces of the positive plate or negative plate of the electrode layer. Assuming a battery assembly in which electrode layers of the same length are stacked parallel to each other on the same plane, after the electrode layers are bent, different sizes of displacement may occur at both ends of the electrode layers. Due to this displacement, it may be difficult to achieve the capacity of the electrode. That is, the energy density relative to the battery may be lowered due to the bending of the electrode layers. To mitigate this problem, the battery assembly according to embodiments of the present disclosure may include electrode layers having different lengths depending on the number of layers of the stacked assembly (e.g., assembly (230)). For example, the lengths of the first electrode layer (211), the second electrode layer (212), the third electrode layer (213), the fourth electrode layer (214), and the fifth electrode layer (215) may differ from each other. As an example that is not limited to, if the thickness of each electrode layer is different, the length of the electrode layer may depend on the difference in curvature due to said thickness. Through electrode layers having different lengths depending on the thickness of each electrode layer and / or the stacking position in the assembly (230), the energy density of the battery assembly (201) can be improved.

[0028] Each electrode layer of the plurality of electrode layers may include an anode tab and a cathode tab. For the anode tab, the description of the anode tab (135) in FIG. 1 may be referenced. For the cathode tab, the description of the cathode tab (145) in FIG. 1 may be referenced. The anode tab and the cathode tab may be referred to as electrode tabs. In the present disclosure, the term 'electrode tab' may refer to a terminal connected to an electrode plate in a stacked electrode structure. A terminal connected to an anode plate may be referred to as an anode tab, and a terminal connected to a cathode plate may be referred to as a cathode tab. In addition to electrode tab, the electrode tab may be referred to as a polarity terminal, electrode tab polarity tab, soft tab, flexible tab, flexible electrode tab, and / or equivalent technical / structural terms. According to one embodiment, the anode tab may protrude in a first direction parallel to a plane (e.g., a plane perpendicular to the stacking direction) of the curved shape of the electrode layers, and the cathode tab may be extended in a second direction opposite to the first direction. In other words, the anode tab corresponds to a portion protruding in the first direction among the anode plates of the electrode layer, and the cathode tab corresponds to a portion protruding in the second direction among the cathode plates of the electrode layer.

[0029] The first electrode layer (211) may include one or more positive tabs (231) and one or more negative tabs (241). For example, the first electrode layer (211) may include a first positive tab (231a) and a second positive tab (231b). The positive plate of the first electrode layer (211) may be connected to the first positive tab (231a) and the second positive tab (231b). For example, the first electrode layer (211) may include a first negative tab (241a) and a second negative tab (241b). The negative plate of the first electrode layer (211) may be connected to the first negative tab (241a) and the second negative tab (241b). The second electrode layer (212) may include one or more positive tabs (232) and one or more negative tabs (242). The second electrode layer (212) may include a first positive tab (232a) and a second positive tab (232b). The positive plate of the second electrode layer (212) may be connected to the first positive tab (232a) and the second positive tab (232b). The second electrode layer (212) may include a first negative tab (242a) and a second negative tab (242b). The negative plate of the second electrode layer (212) may be connected to the first negative tab (242a) and the second negative tab (242b). The third electrode layer (213) may include one or more positive tabs (233) and one or more negative tabs (243). The third electrode layer (213) may include a first positive tab (233a) and a second positive tab (233b). The positive plate of the third electrode layer (213) may be connected to the first positive tab (233a) and the second positive tab (233b). The third electrode layer (213) may include the first negative tab (243a) and the second negative tab (243b). The negative plate of the third electrode layer (213) may be connected to the first negative tab (243a) and the second negative tab (243b). The fourth electrode layer (214) may include one or more positive tabs (234) and one or more negative tabs (244).The fourth electrode layer (214) may include a first positive tab (234a) and a second positive tab (234b). The positive plate of the fourth electrode layer (214) may be connected to the first positive tab (234a) and the second positive tab (234b). The fourth electrode layer (214) may include a first negative tab (244a) and a second negative tab (244b). The negative plate of the fourth electrode layer (214) may be connected to the first negative tab (244a) and the second negative tab (244b). The fifth electrode layer (215) may include one or more positive tabs (235) and one or more negative tabs (245). The fifth electrode layer (215) may include a first positive tab (235a) and a second positive tab (235b). The positive plate of the fifth electrode layer (215) may be connected to the first positive tab (235a) and the second positive tab (235b). The fifth electrode layer (215) may include the first negative tab (245a) and the second negative tab (245b). The negative plate of the fifth electrode layer (215) may be connected to the first negative tab (245a) and the second negative tab (245b).

[0030] When an electrode layer is bent, it is difficult to maintain the bent shape due to the force attempting to return it to its original shape (e.g., planar shape). In particular, it may be difficult to maintain the curvature of the bent shape due to external forces. According to embodiments of the present disclosure, at least two of the electrode tabs (e.g. positive tabs, negative tabs) of the electrode layers may be welded to maintain the bent shape of the battery assembly (201). Even if external action or internal stress occurs due to the welding, the bent shape of the battery assembly (201) can be maintained. When the electrode tabs are welded while aligned, the force of the welded electrode tabs prevents the electrode layer from warping. As a result, the bent shape of the battery assembly (201) can be maintained more easily. Accordingly, the battery assembly (201) according to embodiments of the present disclosure may have an arrangement structure in which the electrode tabs of the electrode layers are aligned in one direction. The alignment may be referred to as tab alignment or electrode tab alignment. For example, a first set of positive tabs (e.g., first positive tab (231a), first positive tab (232a), first positive tab (233a), first positive tab (234a), first positive tab (235a)) may be aligned in a first linear direction. For example, a second set of positive tabs (e.g., second positive tab (231b), second positive tab (232b), second positive tab (233b), second positive tab (234b), second positive tab (235b)) may be aligned in a different third linear direction. For example, a first set of negative tabs (e.g., first negative tab (241a), first negative tab (242a), first negative tab (243a), first negative tab (244a), first negative tab (245a)) may be aligned in a second linear direction.For example, a second set of cathode tabs (e.g., second cathode tab (241b), second cathode tab (242b), second cathode tab (243b), second cathode tab (244b), second cathode tab (245b)) may be aligned in a different fourth linear direction. According to one embodiment, the first linear direction and the second linear direction may be substantially the same. According to one embodiment, the third linear direction and the fourth linear direction may be substantially the same. According to one embodiment, the electrode layers may be spaced apart from a virtual center and may have a curved shape according to a specified radius of curvature. The electrode layers may align or position the anode tabs and cathode tabs based on the radius of curvature axis for the curved shape. According to one embodiment, for the alignment of the electrode tabs, the position of the electrode tab in each electrode layer may differ in that electrode layer. The position of the electrode tab in each electrode layer may depend on the number of layers of the electrode layer and / or the height of the electrode layer in the assembly (230). When the electrode layers are bent, the electrode tabs may be aligned. Examples of the alignment of the electrode tabs are specifically described through FIGS. 3a and 3b.

[0031] FIG. 3a shows an example of positive tabs of electrode layers having a curved shape. FIG. 3b shows an example of negative tabs of electrode layers having a curved shape. For each electrode layer of the battery assembly (201), the description of the electrode layer (100) of FIG. 1 may be referenced.

[0032] Referring to FIGS. 3a and 3b, the battery assembly (201) may include a plurality of electrode layers. For example, the plurality of electrode layers may include a first electrode layer (211), a second electrode layer (212), a third electrode layer (213), a fourth electrode layer (214), and a fifth electrode layer (215). For each electrode layer, the description of FIGS. 1 and 2 may be referenced. The plurality of electrode layers may have a curved shape with respect to a plane (e.g., the yz plane) (e.g., when viewed in the x-axis direction). In other words, the plurality of electrode layers may have a curved shape with respect to a specific plane (e.g., the xy plane). According to embodiments of the present disclosure, each of the plurality of electrode layers may have a curved shape. According to one embodiment, the electrode layers may have different lengths. Each electrode layer of the electrode layers may include a positive tab and a negative tab. For the above positive tab, reference may be made to the description of the positive tab (135) of FIG. 1 and the positive tabs (231, 232, 233, 234, 235) of FIG. 2. For the above negative tab, reference may be made to the description of the negative tab (145) of FIG. 1 and the negative tabs (241, 242, 243, 244, 245) of FIG. 2.

[0033] Referring to FIG. 3a, example (301) shows a cross-section of the battery assembly (201) viewed in one direction (e.g., the (-)x-axis direction). Example (302) shows a perspective view of the battery assembly (201). The electrode layers of the battery assembly (360) (e.g., a first electrode layer (211), a second electrode layer (212), a third electrode layer (213), a fourth electrode layer (214), and a fifth electrode layer (215)) may include positive tabs. Among the positive tabs of the electrode layers, at least two positive tabs may be aligned. The at least two positive tabs may correspond to different electrode layers. For example, among the positive tabs, a first set of positive tabs may be aligned in a first linear direction (331a). For example, the first set of positive tabs may include a first positive tab (231a), a first positive tab (232a), a first positive tab (233a), a first positive tab (234a), and a first positive tab (235a). As the first set of positive tabs is aligned, the normal vectors of the first set of positive tabs in the curved shape of the electrode layers may point in the same direction (e.g., a first linear direction (331a)). To maintain the curved shape, the positive tabs of the electrode layers may be welded. The battery assembly (201) may include a first joint portion (361a) where the positive tabs are welded. As the positive tabs of the first joint portion (361a) are joined while aligned in the first linear direction (331a), twisting between the electrode layers may be prevented. For example, among the anode tabs, the second set of anode tabs may be aligned in a third linear direction (331b) (the first set of cathode tabs of FIG. 3b described later may be aligned in a second linear direction (332a)). As an example, the second set of anode tabs may include a second anode tab (231b), a second anode tab (232b), a second anode tab (233b), a second anode tab (234b), and a second anode tab (235b).As the second set of negative tabs is aligned, the normal vectors of the second set of negative tabs in the curved shape of the electrode layers may be directed in the same direction (e.g., the third linear direction (331b)). To maintain the curved shape, the positive tabs of the electrode layers may be welded. The battery assembly (201) may include a second joint (361b) in which the positive tabs are welded. According to one embodiment, as illustrated in FIG. 3b described below, the normal vectors of the negative tabs may be directed in directions different from the normal vectors of the positive tabs (e.g., the third linear direction (332a) and the fourth linear direction (332b)). As the positive tabs of the second joint (361b) are joined while aligned in the third linear direction (331b), twisting between the electrode layers may be prevented. In the present disclosure, the alignment of the tabs indicates that the positions of the tabs are aligned in the electrode layer and is not interpreted as restricting the direction in which the tabs are folded. For example, a first set of anode tabs having a foldable structure may be folded in a direction opposite to the first linear direction (331a) for welding. For another example, a first set of anode tabs having a foldable structure may be folded in the first linear direction (331a) for welding. In the present disclosure, the alignment of the tabs indicates that the positions of the tabs are aligned in the electrode layer and is not interpreted as restricting the direction in which the tabs are folded. For example, a second set of anode tabs having a foldable structure may be folded in a direction opposite to the third linear direction (331b) for welding. For another example, a second set of anode tabs having a foldable structure may be folded in the third linear direction (331b) for welding.

[0034] In a curve bent according to the curvature of each electrode layer, the normal vector of each of the first set of positive tabs may be directed toward the first linear direction (331a). In a curve bent according to the curvature of each electrode layer, the normal vector of each of the second set of positive tabs may be directed toward the third linear direction (331b). As an example not limited to, the first set of positive tabs and the second set of positive tabs may be symmetric with respect to one direction (e.g., the z-axis). The first linear direction (331a) in which the first set of positive tabs are aligned and the third linear direction (331b) in which the second set of positive tabs are aligned may be directed toward the central region (390). The curvature at the positive tab of a specific electrode layer among the first set of positive tabs and the curvature at the positive tab of said specific electrode layer among the second set of positive tabs may be the same. In the present disclosure, the direction toward the center region refers not only to the direction toward the actual center point of the curved shape but also to the direction toward a point within the region containing said center point (i.e., the center region). In other words, the direction toward a point located within a critical distance from the center point can also be understood as the direction toward the center region. For example, the direction toward the center region may substantially be toward the center point. Additionally, in FIG. 3a, a point in the center region (390) toward which the first linear direction (331a) is directed corresponds to a point in the center region (390) toward which the second linear direction (331b) is directed, but embodiments of the present disclosure are not limited thereto. As an example that is not limited, a point in the center region (390) toward which the first linear direction (331a) is directed and a point in the center region (390) toward which the third linear direction (331b) is directed may be different. Likewise, a point in the central area (390) facing the first linear direction (331a) and a point in the central area (390) facing the second linear direction (332a) may be different.

[0035] In FIG. 3a, an example is described in which the positive tabs are arranged symmetrically with respect to one direction (e.g., the z-axis), but embodiments of the present disclosure are not limited thereto. For example, each of the positive tabs of the second set may be located at the center of the corresponding electrode layer with respect to one axis (e.g., the y-axis). In FIG. 3a, a battery assembly (201) is shown in which all the positive tabs of the electrode layers are aligned and all the aligned positive tabs are welded, but embodiments of the present disclosure are not limited thereto. For example, among the positive tabs of the first set, two positive tabs may be aligned and three positive tabs may not be aligned. For example, among the positive tabs of the first set, four positive tabs may be aligned and one positive tab may not overlap with the alignment direction.

[0036] Referring to FIG. 3b, example (351) shows a cross-section of the battery assembly (201) viewed in one direction (e.g., the (+)x-axis direction). Example (352) shows a perspective view of the battery assembly (201). The electrode layers of the battery assembly (360) (e.g., a first electrode layer (211), a second electrode layer (212), a third electrode layer (213), a fourth electrode layer (214), and a fifth electrode layer (215)) may include negative electrode tabs. Among the negative electrode tabs of the electrode layers, at least two negative electrode tabs may be aligned. The at least two negative electrode tabs may correspond to different electrode layers. For example, among the negative electrode tabs, a first set of negative electrode tabs may be aligned in a second linear direction (332a). For example, the first set of negative tabs may include a first negative tab (241a), a first negative tab (242a), a first negative tab (243a), a first negative tab (244a), and a first negative tab (245a). As the first set of negative tabs is aligned, the normal vectors of the first set of negative tabs may point in the same direction (e.g., a second linear direction (332a)) in the curved shape of the electrode layers. To maintain the curved shape, the negative tabs of the electrode layers may be welded. The battery assembly (201) may include a third joint (362a) in which the negative tabs are welded. As the negative tabs of the third joint (362a) are joined while aligned in the second linear direction (332a), twisting between the electrode layers may be prevented. For example, among the above cathode tabs, the second set of cathode tabs may be aligned in a fourth linear direction (332b). As an example, the second set of cathode tabs may include a second cathode tab (241b), a second cathode tab (242b), a second cathode tab (243b), a second cathode tab (244b), and a second cathode tab (245b).As the second set of negative tabs is aligned, the normal vectors of the second set of negative tabs in the curved shape of the electrode layers may be oriented in the same direction (e.g., the fourth linear direction (332b)). To maintain the curved shape, the negative tabs of the electrode layers may be welded. The battery assembly (201) may include a fourth joint portion (362b) where the negative tabs are welded. According to one embodiment, the normal vectors of the negative tabs may be the same as the normal vectors of the positive tabs. For example, the third linear direction (e.g., the third linear direction (332a)) may be the same as or similar to the first linear direction (e.g., the first linear direction (331a)), and the fourth linear direction (e.g., the fourth linear direction (332b)) may be the same as or similar to the second linear direction (e.g., the second linear direction (331b)). As the negative tabs of the fourth joint portion (362b) are joined in a state aligned with the fourth linear direction (332b), twisting between the electrode layers can be prevented.

[0037] According to one embodiment, the normal vector of each of the first set of cathode tabs in a curve bent according to the curvature of each electrode layer may be directed toward a second linear direction (332a). In a curve bent according to the curvature of each electrode layer, the normal vector of each of the second set of cathode tabs may be directed toward a fourth linear direction (332b). As an example not limited to, the first set of cathode tabs and the second set of cathode tabs may be symmetric with respect to one direction (e.g., the z-axis). The second linear direction (332a) in which the first set of cathode tabs are aligned and the fourth linear direction (332b) in which the second set of cathode tabs are aligned may be directed toward a central region (390). The curvature at the cathode tab of a specific electrode layer among the first set of cathode tabs and the curvature at the cathode tab of said specific electrode layer among the second set of cathode tabs may be the same.

[0038] In FIG. 3b, an example is described in which the negative tabs are arranged symmetrically with respect to one direction (e.g., the z-axis), but embodiments of the present disclosure are not limited thereto. For example, each of the second set of negative tabs may be located at the center of the corresponding electrode layer with respect to one axis (e.g., the y-axis). In FIG. 3b, a battery assembly (201) is shown in which all the negative tabs of the electrode layers are aligned and all the aligned negative tabs are welded, but embodiments of the present disclosure are not limited thereto. For example, among the first set of negative tabs, two negative tabs may be aligned and three negative tabs may not be aligned. For example, among the first set of negative tabs, four negative tabs may be aligned and one negative tab may not overlap with the alignment direction.

[0039] FIGS. 4a and FIGS. 4b show examples of a battery assembly (e.g., battery assembly (201)) including conductive parts and lead tabs.

[0040] Referring to FIGS. 4a and 4b, the battery assembly (201) may include a plurality of electrode layers. For example, the plurality of electrode layers may include a first electrode layer (211), a second electrode layer (212), a third electrode layer (213), a fourth electrode layer (214), and a fifth electrode layer (215). For each electrode layer, the descriptions of FIGS. 1, FIG. 2, FIG. 3a, and FIG. 3b may be referenced. The plurality of electrode layers may have a curved shape with respect to a plane (e.g., the yz plane). Each of the plurality of electrode layers may have a curved shape. Each electrode layer of the electrode layers may include a positive electrode tab and a negative electrode tab. For the positive electrode tab, the descriptions of the positive electrode tab (135) of FIG. 1 and the positive electrode tabs (231, 232, 233, 234, 235) of FIG. 2 may be referenced. For the above negative tabs, the descriptions of the negative tab (145) in FIG. 1 and the negative tabs (241, 242, 243, 244, 245) in FIG. 2 may be referenced. The battery assembly (201) may include a first joint portion (361a) to which a first set of positive tabs are welded. The battery assembly (201) may include a second joint portion (361b) to which a second set of positive tabs are welded. For the welded positive tabs, the descriptions of FIG. 3a may be referenced. The battery assembly (201) may include a third joint portion (362a) to which a first set of negative tabs are welded. The battery assembly (201) may include a fourth joint portion (362b) to which a second set of negative tabs are welded. For the welded negative tabs, the descriptions of FIG. 3b may be referenced. The battery assembly (201) may include conductive parts. The conductive parts may include a first conductive part (411) and a second conductive part (412). The battery assembly (201) may include lead tabs. The lead tabs may include a first lead tab (451) and a second lead tab (452).In the present disclosure, the term 'lead tab' may refer to a terminal (e.g., positive terminal, negative terminal) output to the outside of the housing in a stacked electrode structure. The lead tab may be referred to by, in addition to lead tab, electrode lead, conductive tab, external tab, output tab, external path tab, external output tab, output electrode tab, connection tab, electrode terminal, output terminal, output electrode, output lead tab, output connection tab, bus tab, conductive tab, conductive bus tab, conductive lead tab, third electrode tab (in terms of being connected after the electrode tab and the conductive portion), and / or equivalent technical / structural terms. In an example, though not limited to, the lead tab may be referred to as a conductive portion (or bus bar) in terms of being exposed to the outside of the housing and simultaneously connected to the electrode tab, depending on the embodiment.

[0041] FIG. 4a shows a perspective view of a battery assembly (201) viewed from a first side (e.g., a side facing the (+)x-axis in the yz plane). The battery assembly (201) may include a first conductive portion (411). The first conductive portion (411) may be electrically connected to positive tabs of electrode layers (e.g., first positive tab (231a), first positive tab (232a), first positive tab (233a), first positive tab (234a), first positive tab (235a), second positive tab (231b), second positive tab (232b), second positive tab (233b), second positive tab (234b), and second positive tab (235b)). The first conductive portion (411) may be disposed on a first side of the battery assembly (201) (e.g., a side facing the (+)x-axis in the yz plane). The positive tabs protruding from the first side can be coupled with the first conductive portion (411). The first conductive portion (411) can be electrically connected to the joint portions of the electrode layers (e.g., first joint portion (361a), second joint portion (361b)). The joint portions can protrude from the first side and be coupled with the first conductive portion (411). For example, the first conductive portion (411) can be electrically connected to the first joint portion (361a) and the second joint portion (361b). The first conductive portion (411) can be electrically connected to the positive plate (e.g., positive (130)) of each electrode layer of the battery assembly (201). The first conductive portion (411) can be electrically connected to the first lead tab (451). According to one embodiment, the first conductive portion (411) may be formed integrally with the first lead tab (451). The first lead tab (451) may be positioned to protrude in one direction. The first conductive portion (411) may have a structure that guides the protrusion direction of the first lead tab (451).Although not shown in FIG. 4a, the first lead tab (451) can be used to transfer current from the positive plates of the electrode layers to an external circuit. Electrons inside the battery move through the electrical connection of the first lead tab (451), and the battery can be charged or discharged depending on the movement of the electrons.

[0042] FIG. 4b shows a perspective view of a battery assembly (201) viewed from a second side (e.g., a side facing the (-)x-axis in the yz plane). For example, the second side may be opposite to the first side of FIG. 4a. The battery assembly (201) may include a second conductive portion (412). The second conductive portion (412) may be electrically connected to the negative tabs of the electrode layers (e.g., first negative tab (241a), first negative tab (242a), first negative tab (243a), first negative tab (244a), first negative tab (245a), second negative tab (241b), second negative tab (242b), second negative tab (243b), second negative tab (244b), and second negative tab (245b)). The second conductive portion (412) may be positioned on the second side of the battery assembly (201) (e.g., the side facing the (-)x-axis in the yz plane). The negative electrode tabs protruding from the first side may be coupled with the second conductive portion (412). The joint portions of the electrode layers (e.g., the third joint portion (362a), the fourth joint portion (362b)) may be electrically connected to the second conductive portion (412). The joint portions may protrude from the second side and be coupled with the second conductive portion (412). For example, the second conductive portion (412) may be electrically connected to the third joint portion (362a) and the fourth joint portion (362b). The second conductive portion (412) may be electrically connected to the negative plate (e.g., negative electrode (130)) of each electrode layer of the battery assembly (201). The second conductive portion (412) may be electrically connected to the second lead tab (452). According to one embodiment, the second conductive portion (412) may be formed integrally with the second lead tab (452). The second lead tab (452) may be positioned to protrude in one direction. The second conductive portion (412) may have a structure that guides the protruding direction of the second lead tab (452).Although not shown in FIG. 4b, the second lead tab (452) can be used to transfer current from the negative plates of the electrode layers to an external circuit. Electrons inside the battery move through the electrical connection of the second lead tab (452), and the battery can be charged or discharged depending on the movement of the electrons.

[0043] According to one embodiment, the first conductive portion (411) may have a curved shape to maintain the curved shape of the electrode layers of the battery assembly (201). When viewed from one direction (e.g., the (-)x-axis direction) of the first side of the battery assembly (201), the first conductive portion (411) may overlap the electrode layers. The first conductive portion (411) may include a plurality of portions that overlap the electrode layers. For the robustness of the shape, the curvature of the portion of the first conductive portion (411) that overlaps with the electrode layer may correspond to the curvature of the electrode layer (e.g., within an error range of about 5%). The second conductive portion (412) may have a curved shape to maintain the curved shape of the electrode layers of the battery assembly (201). When viewed from a direction (e.g., the (+)x-axis direction) toward a second side of the battery assembly (201), the second conductive portion (412) may overlap with the electrode layers. The second conductive portion (412) may include a plurality of portions that overlap with the electrode layers. For structural robustness, the curvature of the portion of the second conductive portion (412) that overlaps with the electrode layer may correspond to the curvature of the electrode layer (e.g., within an error range of about 5%).

[0044] According to one embodiment, in terms of a plurality of positive tabs being commonly connected to a first lead tab (451) through a first conductive portion (411), the first conductive portion (411) may be referred to as a bus bar or a first bus bar. In terms of a plurality of negative tabs being commonly connected to a second lead tab (452) through a second conductive portion (412), the second conductive portion (412) may be referred to as a bus bar or a second bus bar. In addition to the bus bar, the conductive portion (e.g., first conductive portion (411), second conductive portion (412)) may be referred to as a conductive bar, electrode rail, connecting bar, connecting rail, conductive rail, conductive bus, bus rail, conductive path, rail bar, rail tab, conductive tab, lead tab, hard tab, hard bar, hard bus bar, second electrode tab, and / or equivalent technical / structural terms.

[0045] FIG. 5 is a diagram illustrating the alignment of electrode tabs of electrode layers having a curved shape. The electrode layers may correspond to stacked electrode layers of a battery assembly (201).

[0046] Referring to FIG. 5, a battery assembly (e.g., battery assembly (201)) may include a plurality of electrode layers. In the battery assembly (201), electrode tabs of different electrode layers may be aligned in one direction. The electrode tabs may include a set of positive tabs or a set of negative tabs. For example, in FIG. 3a, a first set of positive tabs among the positive tabs may be aligned in a first linear direction (331a). For example, in FIG. 3a, a second set of positive tabs among the positive tabs may be aligned in a third linear direction (331b). For example, in FIG. 3b, a first set of negative tabs among the negative tabs may be aligned in a second linear direction (332a). For example, in FIG. 3b, a second set of negative tabs among the negative tabs may be aligned in a fourth linear direction (332b).

[0047] According to one embodiment, the direction in which the electrode tabs are aligned may correspond to the direction of the normal vector for the electrode layer where each electrode tab is located. For the electrode tabs to be aligned in a curved battery, the alignment direction of the electrode tabs must be directed toward a point (e.g., a center region (390)). An assembly (e.g., an assembly (230)) in which electrode layers having a curved shape are stacked is assumed. When the electrode layer located at the top of the assembly (hereinafter, top electrode layer) is bent, the change in the position of the electrode tab in the electrode layer is smaller than the change in the position of the electrode tab in the electrode layer when the electrode layer located at the bottom of the assembly (hereinafter, bottom electrode layer) is bent. That is, the change in the position of the electrode tab in the electrode layer when bent may depend on the distance from the aforementioned point to the electrode layer (e.g., the number of electrode layers, the thickness of the electrode layer). Using this structural principle, the position of the electrode tab in each electrode layer can be designed. For example, when the assembly (e.g., assembly (230)) is viewed in one direction (e.g., the (-)x-axis direction), the electrode layers may be convexly curved on a plane (e.g., the yz plane). Electrode tabs located on the upper electrode layer may be placed at the ends of the upper electrode layer. Electrode tabs located on the lower electrode layer may be placed so as to overlap with an alignment line connecting the electrode tabs of the upper electrode layer and the center region (390).

[0048] According to one embodiment, the electrode layers of a battery assembly may include a first electrode layer (511), a second electrode layer (512), a third electrode layer (513), and a fourth electrode layer (514). The first electrode layer (511), the second electrode layer (512), the third electrode layer (513), and the fourth electrode layer (514) may be stacked in that order. Among the electrode layers, the first electrode layer (511) may correspond to the top electrode layer. The curvature of the first electrode layer (511) may be the lowest. Electrode tabs of the first electrode layer (511) may be disposed at both ends of the first electrode layer (511). For example, electrode tabs of the first electrode layer (511) may be disposed at a first point (521a) and a second point (521b). According to the first alignment direction (555a) from the first point (521a) to the central area (390), the position of the electrode tab in each electrode layer can be determined. According to the first alignment direction (555a), the electrode tab of the second electrode layer (512) can be placed at the third point (522a). According to the first alignment direction (555a), the electrode tab of the third electrode layer (513) can be placed at the fifth point (523a). According to the first alignment direction (555a), the electrode tab of the fourth electrode layer (514) can be placed at the seventh point (524a). Likewise, according to the second alignment direction (555b) from the second point (522a) to the central area (390), the position of the electrode tab in each electrode layer can be determined. According to the second alignment direction (555b), the electrode tab of the second electrode layer (512) can be placed at the fourth point (522b). According to the second alignment direction (555b), the electrode tab of the third electrode layer (513) can be placed at the sixth point (523b). According to the second alignment direction (555b), the electrode tab of the fourth electrode layer (514) can be placed at the eighth point (524b).

[0049] According to one embodiment, through this principle, the distance between electrode tabs for each electrode layer and / or the first curve length (551) from the end of each electrode layer to the electrode tab can be calculated. For example, a total of n electrode layers may be stacked (n is a natural number greater than or equal to 2). The radius of the top electrode layer may be r, and the first curve length (551) between the two electrode tabs of the top electrode layer may be l1. Assuming the curved shape of the assembly in which the electrode layers are stacked is a circle, each electrode layer may be assumed to be a part of a circle according to the curvature, i.e., an arc. The size of the central region (390) for the top electrode layer and the central angle (540) for the electrode tabs of the top electrode layer When the unit is radians, the first curve length (551) between the electrode tabs can be obtained through the following mathematical formula.

[0050]

[0051] l1 represents a first curve length (551), which is the length of the curve extending from the position of one electrode tab to the position of another electrode tab in the upper electrode layer (e.g., the first electrode layer (511)). r represents the radius of the curvature circle of the upper electrode layer, and represents the size of the central angle (540). As a not-limited example, When x (unit: degree) is used instead of (unit: radians), [Equation 1] can be written as "l1=2π·r·x / 360".

[0052] When the thickness (560) corresponding to the distance between electrode layers is denoted as t, the radius of the circle of curvature of the electrode layer located immediately below the upper electrode layer (e.g., the second electrode layer (512)) can be understood as 'r-t'. The second curve length (552) between electrode tabs in the second electrode layer (512) can be obtained through the following mathematical formula.

[0053]

[0054] l2 represents the second curve length (552). r represents the radius of the circle of curvature of the first electrode layer (511), and t is the thickness (560), represents the size of the central angle (540). As a not-limited example, When x (unit: degree) is used instead of (unit: radians), [Equation 2] is "l 2= It can be written as 2π·(-t)·x / 360".

[0055]

[0056] l n represents the curve length of the nth electrode layer. 'r-(nl)t' represents the radius of the circle of curvature of the nth electrode layer. r represents the radius of the circle of curvature of the first electrode layer (511), and t is the thickness (560), represents the size of the central angle (540). n represents the order of the corresponding electrode layer. The lower n is, the higher the electrode layer of n can be stacked. Examples not limited to, to an extent, When x (unit: degree) is used instead of (unit: radians), [Equation 3] is "l n It can be written as =2π·(r-(n-1)t)·x / 360".

[0057] For example, an assembly (230) can be formed as parallel and equal-length electrode layers are bent on a plane. Although the curve length between electrode tabs in the nth electrode layer and the curve length between electrode tabs in the n+1th layer are different, the electrode tabs can be aligned. For example, the distance that must be moved for alignment at one end of the electrode layer (hereinafter, moving distance) can be determined according to the following mathematical formula.

[0058]

[0059] a n+1can represent the additional distance that must be moved from one end of the n+1th electrode layer compared to the electrode layer placed directly above it. Since the top electrode layer has an electrode tab located at the end, a1 can be 0. n represents the curve length of the nth electrode layer. n+1 represents the curve length of the n+1th electrode layer. r represents the radius of the circle of curvature of the top electrode layer (e.g., the first electrode layer (511)), and t is the thickness (560), represents the size of the central angle (540). As a not-limited example, When x (unit: degree) is used instead of (unit: radians), [Equation 4] is "a n+1n It can be written as "=π·t·x / 360".

[0060] In this way, the additional distance to be moved in each electrode layer can be determined. For example, the curve length (570) from the end of the third electrode layer (513) to the electrode tab of the third electrode layer (513) is, It can respond to.

[0061] FIGS. 6A and 6B illustrate examples of the arrangement of electrode layers and aligned electrode tabs (e.g., positive tabs) of a battery assembly (e.g., battery assembly (201)). FIG. 6A shows a shape of the battery assembly (e.g., battery assembly (201)) bent with respect to a plane (e.g., yz plane), and FIG. 6B shows a shape of the battery assembly (e.g., battery assembly (201)) before bending (or straightened) with respect to a plane (e.g., yz plane).

[0062] Referring to FIGS. 6a and 6b, the battery assembly (201) may include a plurality of electrode layers. For example, the plurality of electrode layers may include a first electrode layer (211), a second electrode layer (212), a third electrode layer (213), a fourth electrode layer (214), and a fifth electrode layer (215). For each electrode layer, the descriptions of FIGS. 1, FIG. 2, FIG. 3a, and FIG. 3b may be referenced. The plurality of electrode layers may have a curved shape with respect to a plane (e.g., the yz plane). Each of the plurality of electrode layers may have a curved shape. Each electrode layer of the electrode layers may include a positive electrode tab and a negative electrode tab. For the positive electrode tab, the descriptions of the positive electrode tab (135) of FIG. 1 and the positive electrode tabs (231, 232, 233, 234, 235) of FIG. 2 may be referenced. For the above negative tabs, the descriptions of the negative tab (145) in FIG. 1 and the negative tabs (241, 242, 243, 244, 245) in FIG. 2 may be referenced. The battery assembly (201) may include a first joint portion (361a) to which a first set of positive tabs are welded. The battery assembly (201) may include a second joint portion (361b) to which a second set of positive tabs are welded. For the welded positive tabs, the descriptions of FIG. 3a may be referenced. The battery assembly (201) may include a third joint portion (362a) to which a first set of negative tabs are welded. The battery assembly (201) may include a fourth joint portion (362b) to which a second set of negative tabs are welded. For the welded negative tabs, the descriptions of FIG. 3b may be referenced.

[0063] According to one embodiment, each electrode layer may include a positive plate (e.g., positive (130)), a negative plate (e.g., negative (140)), and a separator (e.g., separator (150)) disposed between the positive plate and the negative plate. Additionally, a separator may be disposed between adjacent electrode layers. The separator may prevent the positive plate of an electrode layer from coming into direct contact with the negative plate of another electrode layer and may provide a path for ions to move. To describe the stacked arrangement of positive plates, negative plates, and separators, each component may be referred to as a plate. The battery assembly (201) may include a structure in which a plurality of plates are stacked. For example, the plurality of plates may include a first plate (601), a second plate (602), a third plate (603), a fourth plate (604), a fifth plate (605), a sixth plate (606), a seventh plate (607), an eighth plate (608), a ninth plate (609), a tenth plate (610), an eleventh plate (611), a twelfth plate (612), a thirteenth plate (613), a fourteenth plate (614), a fifteenth plate (615), a sixteenth plate (616), a seventeenth plate (617), an eighteenth plate (618), and a nineteenth plate (619).

[0064] The electrode layer (100) according to embodiments of the present disclosure may include various structures. According to various embodiments, the electrode layer (100) may refer to one anode layer (130), one cathode layer (140), and at least one separator (150), for example, as shown in FIG. 1. The separator (150) may be disposed between the anode layer (130) and the cathode layer (140). According to various embodiments, the electrode layer (100) may refer to, for example, one anode layer (130) or a cathode layer (140). According to various embodiments, the electrode layer (100) may refer to, for example, two anode layers (130), one cathode layer (140), and two or more separators. As an example, the electrode layer (100) may include a structure in which an anode layer, a separator, a cathode layer, a separator, and an anode layer are stacked in that order. According to various embodiments, the electrode layer (100) may, for example, refer to two cathode layers (140), one anode (130), and two or more separators. In one example, the electrode layer (100) may include a structure in which a cathode layer, a separator, an anode layer, a separator, and a cathode layer are stacked in that order. The plurality of plates may be divided into electrode layer units. For example, one electrode layer may include one anode layer, one cathode layer, and a separator disposed between the anode layer and the cathode layer. A separator may be disposed between each electrode layer. In one example, the electrode layer may include an anode layer corresponding to a second plate (602), a separator corresponding to a third plate (603), and a cathode layer corresponding to a fourth plate (604). In one example, the electrode layer may include an anode layer corresponding to a sixth plate (606), a separator corresponding to a seventh plate (607), and a cathode layer corresponding to an eighth plate (608). For example, the electrode layer may include an anode layer corresponding to the 10th plate (610), a separator corresponding to the 11th plate (611), and a cathode layer corresponding to the 12th plate (612).For example, the electrode layer may include an anode layer corresponding to the 14th plate (614), a separator corresponding to the 15th plate (615), and a cathode layer corresponding to the 16th plate (616). For another example, one electrode layer may correspond to one anode layer or one cathode layer. A separator may be disposed between each electrode layer. For example, the electrode layer may include an anode layer corresponding to the 2nd plate (602). For example, the electrode layer may include a cathode layer corresponding to the 4th plate (604). For example, the electrode layer may include an anode layer corresponding to the 6th plate (606). For example, the electrode layer may include a cathode layer corresponding to the 8th plate (608). For example, the electrode layer may include an anode layer corresponding to the 10th plate (610). For example, the electrode layer may include a cathode layer corresponding to the 12th plate (612). For example, the electrode layer may include an anode layer corresponding to the 14th plate (614). For example, the electrode layer may include a cathode layer corresponding to the 16th plate (616). For example, the electrode layer may include an anode layer corresponding to the 18th plate (602). For another example, one electrode layer may include two anodes and one cathode layer. A separator may be disposed between each electrode layer. For example, the electrode layer may include an anode layer corresponding to the 2nd plate (602), a separator corresponding to the 3rd plate (603), a cathode layer corresponding to the 4th plate (604), a separator corresponding to the 5th plate (605), and an anode layer corresponding to the 6th plate (606). For example, the electrode layer may include an anode layer corresponding to the 8th plate (608), a separator corresponding to the 9th plate (609), a cathode layer corresponding to the 10th plate (610), a separator corresponding to the 11th plate (611), and an anode layer corresponding to the 12th plate (612).For example, the electrode layer may include an anode layer corresponding to the 14th plate (614), a separator corresponding to the 15th plate (615), a cathode layer corresponding to the 16th plate (616), a separator corresponding to the 17th plate (617), and an anode layer corresponding to the 18th plate (618).

[0065] Since the battery assembly (201) includes a plurality of plates, in order to manufacture a battery assembly (201) with a curved shape, the plurality of plates are bent. If the electrode layers have the same area on one plane (e.g., xy plane) or the same length when viewed in one direction (e.g., (-)x-axis direction), the electrode layers may have different curvatures for the battery assembly (201) with a curved shape. As a result, displacement of the electrode plates may occur after bending. Due to swelling, a stability problem may occur due to the twisting of the electrode plates between the upper and lower parts. In addition, since there is no corresponding electrode plate portion at the end portions of the electrodes of the plate where displacement has occurred (e.g., the first portion (630a), the second portion (630b)), it is difficult to achieve battery capacity. However, according to one embodiment, electrode plates of the same size may be used to reduce battery manufacturing costs, and a battery assembly (201) having a curvature including the end portions (e.g., the first portion (630a), the second portion (630b)) may be formed. The battery assembly (201) may include a first joint portion (361a) and a second joint portion (362a) where the positive electrode tabs are welded, and may include a first conductive portion (e.g., the first conductive portion (411)) connecting the positive electrode tabs.

[0066] According to one embodiment, each plate may be designed to be bent according to curvature and then have different tab positions on each plate for tab alignment. For example, let us assume that they have the same area on one plane (e.g., the xy plane) or the same length when viewed in one direction (e.g., the (-)x-axis direction). Since the plates have different curvatures depending on their height, if electrode tabs are placed at the same position on the plates, it may be difficult to form tab alignment between the positions of the electrode tabs on the plates. For the tab alignment, the anode tabs of the anode plates may be placed at different positions on one axis (e.g., the y-axis) for each electrode layer, assuming a plane. As each anode plate is bent, they may be aligned along the one axis. As a non-limiting example, the position of the anode tab may be referenced as a distance from the axis of symmetry (e.g., the z-axis) in FIG. 6b.

[0067] According to one embodiment, each plate may be designed to have different lengths after being bent according to the curvature. In embodiments of the present disclosure, the assembly (230) having a bent shape may have electrode layers stacked such that, even after the electrode layers are bent, the electrode tabs are aligned and the cell shape is maintained, and no under-capacity is generated due to displacement at both ends of each electrode layer. For example, in the bent shape, the end portions (e.g., first portion (630a), second portion (630b)) do not contribute to the capacity, so the energy density may be reduced compared to a planar battery. Energy density may be improved by removing the end portions (e.g., first portion (630a), second portion (630b)) of each electrode layer. For example, the plates may be designed so that each electrode plate does not include a portion that does not contribute to the battery capacity because there is no corresponding electrode.

[0068] The battery assembly (201) comprises a first plate (651) having a length reduced compared to the length of the first plate (601), a second plate (652) having a length reduced compared to the length of the second plate (602), a third plate (653) having a length reduced compared to the length of the third plate (603), a fourth plate (654) having a length reduced compared to the length of the fourth plate (604), a fifth plate (655) having a length reduced compared to the length of the fifth plate (605), a sixth plate (656) having a length reduced compared to the length of the sixth plate (606), a seventh plate (657) having a length reduced compared to the length of the seventh plate (607), an eighth plate (658) having a length reduced compared to the length of the eighth plate (608), a ninth plate (659) having a length reduced compared to the length of the ninth plate (609), and a tenth plate (610) having a length reduced compared to the length of the tenth plate. It may include a plate (660), a 11th plate (661) having a length reduced compared to the length of the 11th plate (611), a 12th plate (662) having a length reduced compared to the length of the 12th plate (612), a 13th plate (663) having a length reduced compared to the length of the 13th plate (613), a 14th plate (664) having a length reduced compared to the length of the 14th plate (614), a 15th plate (665) having a length reduced compared to the length of the 15th plate (615), a 16th plate (666) having a length reduced compared to the length of the 16th plate (616), a 17th plate (667) having a length reduced compared to the length of the 17th plate (617), an 18th plate (668) having a length reduced compared to the length of the 18th plate (618), and a 19th plate (669) having a length reduced compared to the length of the 19th plate (619). The reduced length at each electrode plate (e.g., positive plate, negative plate) may be shorter than the reduced length at the underlying electrode plate adjacent to that electrode plate. As a non-limiting example, the length of the separator may correspond to the length of the adjacent electrode plate.

[0069] A battery assembly (201) can be manufactured by stacking plates. When the plates are stacked, they can be assembled using a jig with curvature. Since the ends of the plates are prone to being separated from each other, the structural integrity between the plates can be improved by welding adjacent tabs positioned adjacent to the ends. Additionally, the curved shape of the battery assembly (201) can be stably maintained by attaching a conductive portion having a curvature corresponding to the curved plates (e.g., electrode layers) to the side. As the length of the electrodes is formed differently depending on the number of layers of plates, the energy density can be improved. The position of the electrode tabs on the plates can be spaced apart from the ends at a certain distance for tab alignment. For example, even if the plates are of different lengths, the distance from the ends to the electrode tabs (e.g., positive tabs) can be the same. Even if the absolute position of the electrode tabs on one axis is different, the distance from the ends to the electrode tabs can be the same. For example, when all electrode plates are in a unfolded (or unbent) state, the distance from the left end of the second plate (652) to the first positive tab (231a) of the second plate (652) may correspond to the distance from the left end of the fifth plate (655) to the first positive tab (232a) of the fifth plate (655). Since the electrode plates have different curvatures depending on their height, they may be aligned along the aforementioned axis as each positive plate is bent. As an example that is not limited, the position of the positive tab may be referenced as the distance from the end of the electrode plate to the positive tab. Meanwhile, since the above embodiment is merely illustrative, even if the distance from the end of the electrode plate to the electrode tab differs for each electrode layer, it is understood that if the electrode tabs are aligned in a bent shape, it corresponds to the embodiment of the present disclosure.

[0070] In FIGS. 2 through 6b, an example is described in which positive tabs protrude in one direction (e.g., (+)x-axis direction) and negative tabs protrude in a direction opposite to said one direction (e.g., (-)x-axis direction), but the embodiments of the present disclosure are not limited thereto. According to one embodiment, the positive tabs and the negative tabs may be arranged to protrude in the same direction. For example, the positive tabs and the negative tabs may protrude on a first side of the assembly (230) (e.g., a side facing the (+)x-axis direction). On the first side, a first conductive portion connecting the positive tabs (e.g., a first conductive portion (411)) and a second conductive portion connecting the negative tabs (e.g., a second conductive portion (412)) may be arranged so as not to be connected to each other. According to one embodiment, the cathode tabs may be arranged to protrude in a direction different from the direction in which the anode tabs protrude (e.g., (+)x-axis direction) and the direction opposite to the direction in which the anode tabs protrude (e.g., (-)x-axis direction) (e.g., (+)z-axis direction, (-)y-axis direction).

[0071] FIGS. 7a and 7b illustrate an example of a battery assembly (e.g., battery assembly (201)) comprising unaligned electrode tabs. The battery assembly (201) may include a plurality of electrode layers and a separator disposed between every two electrode layers.

[0072] Referring to FIG. 7a, example (700) is a view (e.g., plan view) of a plurality of positive plates and a plurality of negative plates viewed in one direction (e.g., the (-)z-axis direction). The battery assembly (201) may include a plurality of electrode layers. Each of the plurality of electrode layers may include a positive plate and a negative plate. The battery assembly (201) may include a plurality of positive plates and a plurality of negative plates. For example, the plurality of positive plates may include a first positive plate (711), a second positive plate (712), a third positive plate (713), a fourth positive plate (714), a fifth positive plate (715), and a sixth positive plate (716). Each positive plate may include one or more positive tabs protruding in one direction (e.g., the (+)x-axis direction). The first positive plate (711) may include a first positive tab (721a) and a second positive tab (721b). The second anode plate (712) may include a third anode tab (721a) and a fourth anode tab (722b). The third anode plate (713) may include a fifth anode tab (723). The fourth anode plate (714) may include a sixth anode tab (724). The fifth anode plate (715) may include a seventh anode tab (725a) and an eighth anode tab (725b). The sixth anode plate (716) may include a ninth anode tab (726a) and a tenth anode tab (726b). For example, the plurality of cathode plates may include a first cathode plate (761), a second cathode plate (762), a third cathode plate (763), a fourth cathode plate (764), a fifth cathode plate (765), and a sixth cathode plate (766). Each cathode plate may include one or more cathode tabs protruding in one direction (e.g., the (-)x-axis direction). A first cathode plate (761) may include a first cathode tab (771a) and a second cathode tab (771b). A second cathode plate (762) may include a third cathode tab (771a) and a fourth cathode tab (772b). A third cathode plate (763) may include a fifth cathode tab (773).The fourth cathode plate (764) may include a sixth cathode tab (774). The fifth cathode plate (765) may include a seventh cathode tab (775a) and an eighth cathode tab (775b). The sixth cathode plate (766) may include a ninth cathode tab (776a) and a tenth cathode tab (776b).

[0073] Each electrode layer may include an anode plate (e.g., anode (130)), a cathode plate (e.g., cathode (140)), and a separator (e.g., separator (150)) disposed between the anode plate and the cathode plate. Additionally, a separator may be disposed between adjacent electrode layers. The separator may prevent direct contact between the anode plate of an electrode layer and the cathode plate of another electrode layer and provide a path for ions to move. To describe the stacked arrangement of anode plates, cathode plates, and separators, a plurality of plates may be defined.

[0074] Referring to FIG. 7b, Example (750) shows an assembly (e.g., assembly (230)) in which electrode layers comprising a plurality of positive plates and a plurality of negative plates are stacked. Example (751) shows a drawing (e.g., front view) of the assembly (230) viewed from a first side, and Example (752) shows a drawing (e.g., front view) of the assembly (230) viewed from a second side opposite to the first side.

[0075] Even if not all electrode tabs are aligned, an overlapping design of at least two electrode tabs (e.g., positive tabs, negative tabs) can be understood as an embodiment of the present disclosure. For example, adjacent electrode tabs may overlap when viewed in one direction (e.g., the (-)x-axis direction). A joint may be formed by welding the electrode tabs and the conductive portion (e.g., the first conductive portion (411)) together. By welding adjacent electrode tabs together, tensile strength can be improved and the reduction in energy density due to welding can be reduced.

[0076] FIGS. 8a, FIGS. 8b, and FIGS. 8c show examples of a battery assembly (e.g., battery assembly (201)) including a battery protection circuit.

[0077] Referring to FIG. 8a, the battery assembly (201) may include an assembly (230) in which a plurality of electrode layers are stacked. For example, the plurality of electrode layers may include a first electrode layer (211), a second electrode layer (212), a third electrode layer (213), a fourth electrode layer (214), and a fifth electrode layer (215). For each electrode layer, the descriptions of FIG. 1, FIG. 2, FIG. 3a, and FIG. 3b may be referenced. The plurality of electrode layers may have a curved shape with respect to a plane (e.g., the xy plane). Each of the plurality of electrode layers may have a curved shape. Each electrode layer of the electrode layers may include a positive electrode tab and a negative electrode tab. For the positive electrode tab, the descriptions of the positive electrode tab (135) of FIG. 1 and the positive electrode tabs (231, 232, 233, 234, 235) of FIG. 2 may be referenced. For the above-mentioned negative tabs, reference may be made to the description of the negative tab (145) of FIG. 1 and the negative tabs (241, 242, 243, 244, 245) of FIG. 2. The assembly (230) may include a third joint portion (362a) to which a first set of negative tabs are welded. The battery assembly (201) may include a fourth joint portion (362b) to which a second set of negative tabs are welded. For the welded negative tabs, reference may be made to the description of FIG. 3b. Meanwhile, positive tabs may be drawn out in the same direction as the direction in which the negative tabs are drawn out (e.g., the (-)x-axis direction). The positive tabs may be placed on a second side (e.g., a side facing the (-)x-axis in the yz plane). The positive tabs may be welded. The battery assembly (201) may include a joint portion (861) where the positive tabs are welded. According to one embodiment, the battery assembly (201) may include a first lead tab (891) and a second lead tab (892). The first lead tab (891) may be connected to an external device and electrically connected to the joint portion (861).The first lead tab (891) may be referred to as the first conductive portion in terms of being connected to the portion where the positive tabs are welded. The second lead tab (892) may be connected to the external device and electrically connected to the third joint portion (362a). The second lead tab (892) may be referred to as the second conductive portion in terms of being connected to the portion where the negative tabs are welded.

[0078] Referring to FIG. 8b, the battery assembly (201) may include a housing (888). The housing (888) may be referred to as a battery housing, battery pack, battery pouch, pouch, and / or equivalent technical / structural terms. A first lead tab (891) and a second lead tab (892) may be exposed to the outside of the housing (888).

[0079] Referring to FIG. 8c, the battery assembly (201) may include a battery protection circuit (895). The battery protection circuit (895) may be configured to protect the battery assembly (201) so that the battery assembly (201) is not damaged by phenomena such as overcharging, over-discharging, or overcurrent. The battery protection circuit (895) may be referred to as a protection circuit module (PCM). The battery protection circuit (895) may be placed on one side of the battery assembly (201) (e.g., a non-curved portion facing the (-)x-axis direction). The battery protection circuit (895) may be electrically connected to the first lead tab (891) and the second lead tab (892) of FIG. 8b. The battery protection circuit (895) may be placed on the non-curved side through positive tabs and negative tabs facing the same direction (e.g., the (-)x-axis direction). Since the positive tabs and negative tabs are oriented in the same direction, the volume of the weld and conductive parts (e.g., first conductive part (411), second conductive part (412)) is reduced, so the energy density of the battery assembly can be improved.

[0080] FIGS. 9a, FIGS. 9b, and FIGS. 9c illustrate examples of electronic devices comprising a battery assembly (e.g., battery assembly (201)). For the battery assembly (201), the descriptions of FIGS. 1 through 8c may be referenced.

[0081] Referring to FIG. 9a, the wearable device (901) may include a battery assembly (201). For example, the wearable device (901) may be a wearable device (e.g., a bracelet, a watch) that can be worn on the wrist. The wearable device (901) may be positioned so that a curved portion of the battery assembly (201) wraps around an axis corresponding to the user's arm of the wearable device (901). As an example, the wearable device (901) may include a battery assembly (201) comprising a battery protection circuit (895) and a housing (888), as illustrated in FIG. 8c.

[0082] Referring to FIG. 9b, the wearable device (931) may include a battery assembly (201). For example, the wearable device (931) may be a wearable device (e.g., a ring) that can be worn on a finger. The wearable device (931) may be positioned so that a curved portion of the battery assembly (201) wraps around an axis corresponding to the finger of the user of the wearable device (931). As an example, the wearable device (901) may include a battery assembly (201) comprising a battery protection circuit (895) and a housing (888), as illustrated in FIG. 8c.

[0083] Referring to FIG. 9c, the electronic device (961) may include a battery assembly (201). For example, the electronic device (961) may be an electronic device having a curved display (e.g., a tablet, a PC with an integrated monitor, a rollable electronic device). The electronic device (961) may be positioned so that a curved portion of the battery assembly (201) corresponds to a curved portion of the curved display. As an example, the electronic device (961) may include a battery assembly (201) comprising a battery protection circuit (895) and a housing (888), as illustrated in FIG. 9c.

[0084] In embodiments of the present disclosure, a battery assembly (201) is provided. The battery assembly (201) may comprise a plurality of electrode layers stacked thereon, wherein at least one electrode layer among the plurality of electrode layers has a curved shape with respect to one plane and comprises a positive plate, a negative plate, a separator disposed between the positive plate and the negative plate, at least one positive tab connected to the positive plate, and at least one negative tab connected to the negative plate; separators disposed between two adjacent electrode layers among the plurality of electrode layers; a first conductive portion (411) coupled to the positive tabs of the plurality of electrode layers; and a second conductive portion (412) coupled to the negative tabs of the plurality of electrode layers. Among the positive tabs, at least two positive tabs corresponding to different electrode layers may be welded. Among the negative tabs, at least two negative tabs corresponding to different electrode layers may be welded. The welded at least two positive tabs may be aligned in a first linear direction toward a central region for the curved shape. At least two of the welded cathode tabs can be aligned in a second linear direction toward the center region of the curved shape.

[0085] For example, the at least one positive tab of each electrode layer may be positioned to protrude in a first direction parallel to the first plane. The at least one negative tab of each electrode layer may be positioned to protrude in a second direction opposite to the first direction. The first conductive portion (411) may be positioned on a first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked. The second conductive portion (412) may be positioned on a second surface facing the second direction of the assembly in which the plurality of electrode layers are stacked.

[0086] For example, the plurality of electrode layers may have curved shapes of different lengths. Based on the stacking direction of the plurality of electrode layers, the curvature of the upper electrode layer among the plurality of electrode layers may be smaller than the curvature of the lower electrode layer among the plurality of electrode layers.

[0087] For example, the plurality of electrode layers may include a first electrode layer and a second electrode layer disposed above the first electrode layer. The at least two positive tabs may include a first positive tab of the first electrode layer and a second positive tab of the second electrode layer. The first electrode layer may include a first end near the first positive tab and a second end far from the first positive tab. The second electrode layer may include a first end near the second positive tab and a second end far from the second positive tab. The distance between the first end of the second electrode layer and the second positive tab may be longer than the distance between the first end of the first electrode layer and the first positive tab.

[0088] For example, the plurality of electrode layers may include a first electrode layer and a second electrode layer disposed above the first electrode layer. The at least two cathode tabs may include a first cathode tab of the first electrode layer and a second cathode tab of the second electrode layer. The first electrode layer may include a first end near the first cathode tab and a second end far from the first cathode tab. The second electrode layer may include a first end near the second cathode tab and a second end far from the second cathode tab. The distance between the first end of the second electrode layer and the second cathode tab may be longer than the distance between the first end of the first electrode layer and the first cathode tab.

[0089] For example, the anode tabs may further include a second set of anode tabs corresponding to different electrode layers. The cathode tabs may further include a second set of cathode tabs corresponding to different electrode layers. The second set of anode tabs may be welded together and aligned in a third linear direction toward the center region of the curved shape. The second set of cathode tabs may be welded together and aligned in a fourth linear direction toward the center region of the curved shape.

[0090] For example, the plurality of electrode layers may include a first electrode layer and a second electrode layer disposed above the first layer. The distance between the anode tab corresponding to the second electrode layer among the at least two anode tabs and the anode tab corresponding to the second electrode layer among the second set of anode tabs may be longer than the distance between the anode tab corresponding to the first electrode layer among the at least two anode tabs and the anode tab corresponding to the first electrode layer among the second set of anode tabs.

[0091] For example, the at least one positive tab may be positioned to protrude in a first direction parallel to the one plane. The at least one negative tab may be positioned to protrude in the first direction. The first conductive portion (411) may be positioned on a first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked. The second conductive portion (412) may be positioned on the first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked.

[0092] For example, the battery assembly (201) may include a battery protection circuit disposed on the first surface. The battery protection circuit may be electrically connected to the first conductive portion (411) and the second conductive portion (412).

[0093] For example, the battery assembly (201) may include a first lead tab coupled to the first conductive portion (411); and a second lead tab coupled to the second conductive portion (412).

[0094] In embodiments of the present disclosure, an electronic device is provided. The electronic device may include a battery assembly (201) having a curved shape; and a power circuit connected to the battery assembly (201). The battery assembly (201) may include a plurality of electrode layers stacked thereon, wherein at least one electrode layer among the plurality of electrode layers has a curved shape with respect to one plane and includes a positive plate, a negative plate, a separator disposed between the positive plate and the negative plate, at least one positive tab connected to the positive plate, and at least one negative tab connected to the negative plate; separators disposed between two adjacent electrode layers among the plurality of electrode layers; a first conductive portion (411) coupled to the positive tabs of the plurality of electrode layers; and a second conductive portion (412) coupled to the negative tabs of the plurality of electrode layers. Among the positive tabs, at least two positive tabs corresponding to different electrode layers may be welded. Among the negative tabs, at least two negative tabs corresponding to different electrode layers may be welded. The above-mentioned welded at least two positive tabs may be aligned in a first linear direction toward the central region of the curved shape. The above-mentioned welded at least two negative tabs may be aligned in a second linear direction toward the central region of the curved shape.

[0095] For example, the at least one positive tab of each electrode layer may be positioned to protrude in a first direction parallel to the first plane. The at least one negative tab of each electrode layer may be positioned to protrude in a second direction opposite to the first direction. The first conductive portion (411) may be positioned on a first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked. The second conductive portion (412) may be positioned on a second surface facing the second direction of the assembly in which the plurality of electrode layers are stacked.

[0096] For example, the plurality of electrode layers may have curved shapes of different lengths. Based on the stacking direction of the plurality of electrode layers, the curvature of the upper electrode layer among the plurality of electrode layers may be smaller than the curvature of the lower electrode layer among the plurality of electrode layers.

[0097] For example, the plurality of electrode layers may include a first electrode layer and a second electrode layer disposed above the first electrode layer. The at least two positive tabs may include a first positive tab of the first electrode layer and a second positive tab of the second electrode layer. The first electrode layer may include a first end near the first positive tab and a second end far from the first positive tab. The second electrode layer may include a first end near the second positive tab and a second end far from the second positive tab. The distance between the first end of the second electrode layer and the second positive tab may be longer than the distance between the first end of the first electrode layer and the first positive tab.

[0098] For example, the plurality of electrode layers may include a first electrode layer and a second electrode layer disposed above the first electrode layer. The at least two cathode tabs may include a first cathode tab of the first electrode layer and a second cathode tab of the second electrode layer. The first electrode layer may include a first end near the first cathode tab and a second end far from the first cathode tab. The second electrode layer may include a first end near the second cathode tab and a second end far from the second cathode tab. The distance between the first end of the second electrode layer and the second cathode tab may be longer than the distance between the first end of the first electrode layer and the first cathode tab.

[0099] For example, the anode tabs may further include a second set of anode tabs corresponding to different electrode layers. The cathode tabs may further include a second set of cathode tabs corresponding to different electrode layers. The second set of anode tabs may be welded together and aligned in a third linear direction toward the center region of the curved shape. The second set of cathode tabs may be welded together and aligned in a fourth linear direction toward the center region of the curved shape.

[0100] For example, the plurality of electrode layers may include a first electrode layer and a second electrode layer disposed above the first layer. The distance between the anode tab corresponding to the second electrode layer among the at least two anode tabs and the anode tab corresponding to the second electrode layer among the second set of anode tabs may be longer than the distance between the anode tab corresponding to the first electrode layer among the at least two anode tabs and the anode tab corresponding to the first electrode layer among the second set of anode tabs.

[0101] For example, the at least one positive tab may be positioned to protrude in a first direction parallel to the one plane. The at least one negative tab may be positioned to protrude in the first direction. The first conductive portion (411) may be positioned on a first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked. The second conductive portion (412) may be positioned on the first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked.

[0102] For example, the battery assembly (201) may include a battery protection circuit disposed on the first surface. The battery protection circuit may be electrically connected to the first conductive portion (411) and the second conductive portion (412).

[0103] For example, the battery assembly (201) may include a first lead tab coupled to the first conductive portion (411) and a second lead tab coupled to the second conductive portion (412). The first lead tab and the second lead tab may be output from the outside of the housing of the battery assembly (201) and connected to the power circuit.

[0104] The battery assembly described above (e.g., battery assembly (201)) may be mounted on an electronic device and used to drive said electronic device. For an electronic device including said battery assembly (e.g., wearable device (901), wearable device (931), electronic device (961)), the descriptions of FIG. 10 may be referenced. The electronic device (1001) of FIG. 10 may include a battery assembly (201).

[0105] Figure 10 is a block diagram of an electronic device in a network environment.

[0106] Referring to FIG. 10, in a network environment (1000), an electronic device (1001) may communicate with an electronic device (1002) through a first network (1098) (e.g., a short-range wireless communication network) or with at least one of an electronic device (1004) or a server (1008) through a second network (1099) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (1001) may communicate with the electronic device (1004) through a server (1008). According to one embodiment, the electronic device (1001) may include a processor (1020), memory (1030), input module (1050), sound output module (1055), display module (1060), audio module (1070), sensor module (1076), interface (1077), connection terminal (1078), haptic module (1079), camera module (1080), power management module (1088), battery (1089), communication module (1090), subscriber identification module (1096), or antenna module (1097). In some embodiments, at least one of these components (e.g., connection terminal (1078)) may be omitted from the electronic device (1001), or one or more other components may be added. In some embodiments, some of these components (e.g., sensor module (1076), camera module (1080), or antenna module (1097)) may be integrated into a single component (e.g., display module (1060)).

[0107] The processor (1020) can, for example, execute software (e.g., program (1040)) to control at least one other component (e.g., hardware or software component) of the electronic device (1001) connected to the processor (1020) and can perform various data processing or operations. According to one embodiment, as at least part of the data processing or operations, the processor (1020) can store commands or data received from other components (e.g., sensor module (1076) or communication module (1090)) in volatile memory (1032), process the commands or data stored in volatile memory (1032), and store the resulting data in non-volatile memory (1034). According to one embodiment, the processor (1020) may include a main processor (1021) (e.g., a central processing unit or an application processor) or an auxiliary processor (1023) that can operate independently or together with it (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device (1001) includes a main processor (1021) and an auxiliary processor (1023), the auxiliary processor (1023) may be configured to use lower power than the main processor (1021) or to be specialized for a designated function. The auxiliary processor (1023) may be implemented separately from the main processor (1021) or as part thereof.

[0108] The auxiliary processor (1023) may control at least some of the functions or states associated with at least one component of the electronic device (1001) (e.g., display module (1060), sensor module (1076), or communication module (1090)) on behalf of the main processor (1021) while the main processor (1021) is in an inactive (e.g., sleep) state, or together with the main processor (1021) while the main processor (1021) is in an active (e.g., application execution) state. According to one embodiment, the auxiliary processor (1023) (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module (1080) or communication module (1090)). According to one embodiment, the auxiliary processor (1023) (e.g., neural network processing unit) may include a hardware structure specialized for processing an artificial intelligence model. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, on the electronic device (1001) itself where the artificial intelligence model is executed, or through a separate server (e.g., server (1008)). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model may include a plurality of artificial neural network layers.An artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to the hardware structure, the artificial intelligence model may include a software structure, either additionally or substantially.

[0109] The memory (1030) can store various data used by at least one component of the electronic device (1001) (e.g., processor (1020) or sensor module (1076)). The data may include, for example, input data or output data for software (e.g., program (1040)) and related commands. The memory (1030) may include volatile memory (1032) or non-volatile memory (1034).

[0110] The program (1040) may be stored as software in memory (1030) and may include, for example, an operating system (1042), middleware (1044), or an application (1046).

[0111] The input module (1050) can receive commands or data to be used for a component of the electronic device (1001) (e.g., processor (1020)) from outside the electronic device (1001) (e.g., user). The input module (1050) may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0112] The sound output module (1055) can output a sound signal to the outside of the electronic device (1001). The sound output module (1055) may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part thereof.

[0113] The display module (1060) can visually provide information to an external (e.g., user) of the electronic device (1001). The display module (1060) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling said device. According to one embodiment, the display module (1060) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of the force generated by said touch.

[0114] The audio module (1070) can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module (1070) can acquire sound through an input module (1050) or output sound through an audio output module (1055) or an external electronic device (e.g., electronic device (1002)) (e.g., speaker or headphones) connected directly or wirelessly to the electronic device (1001).

[0115] The sensor module (1076) can detect the operating state of the electronic device (1001) (e.g., power or temperature) or the external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (1076) may include, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0116] The interface (1077) may support one or more specified protocols that can be used for the electronic device (1001) to be connected directly or wirelessly to an external electronic device (e.g., electronic device (1002)). According to one embodiment, the interface (1077) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0117] The connection terminal (1078) may include a connector through which the electronic device (1001) can be physically connected to an external electronic device (e.g., electronic device (1002)). According to one embodiment, the connection terminal (1078) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0118] The haptic module (1079) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that can be perceived by the user through tactile or kinesthetic senses. According to one embodiment, the haptic module (1079) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

[0119] The camera module (1080) can capture still images and video. According to one embodiment, the camera module (1080) may include one or more lenses, image sensors, image signal processors, or flashes.

[0120] The power management module (1088) can manage power supplied to the electronic device (1001). According to one embodiment, the power management module (1088) may be implemented, for example, as at least part of a power management integrated circuit (PMIC).

[0121] The battery (1089) can supply power to at least one component of the electronic device (1001). According to one embodiment, the battery (1089) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0122] The communication module (1090) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between an electronic device (1001) and an external electronic device (e.g., electronic device (1002), electronic device (1004), or server (1008)), and the performance of communication through the established communication channel. The communication module (1090) may include one or more communication processors that operate independently of the processor (1020) (e.g., application processor) and support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (1090) may include a wireless communication module (1092) (e.g., cellular communication module, short-range wireless communication module, or GNSS (global navigation satellite system) communication module) or a wired communication module (1094) (e.g., LAN (local area network) communication module, or power line communication module). The corresponding communication module among these communication modules can communicate with an external electronic device (1004) through a first network (1098) (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (1099) (e.g., a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (1092) can identify or authenticate the electronic device (1001) within a communication network such as the first network (1098) or the second network (1099) using subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module (1096).

[0123] The wireless communication module (1092) can support 5G networks and next-generation communication technologies following 4G networks, for example, new radio access technology. NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (1092) can support a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate, for example. The wireless communication module (1092) can support various technologies for securing performance in the high-frequency band, such as beamforming, massive MIMO (multiple-input and multiple-output), full-dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large-scale antenna. The wireless communication module (1092) can support various requirements specified in the electronic device (1001), an external electronic device (e.g., electronic device (1004)), or a network system (e.g., a second network (1099)). According to one embodiment, the wireless communication module (1092) may support a Peak data rate (e.g., 20 Gbps or more) for eMBB realization, loss coverage (e.g., 164 dB or less) for mMTC realization, or U-plane latency (e.g., downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) for URLLC realization.

[0124] An antenna module (1097) can transmit a signal or power to or from an external source (e.g., an external electronic device). According to one embodiment, the antenna module (1097) may include an antenna comprising a radiator made of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (1097) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as a first network (1098) or a second network (1099), may be selected from the plurality of antennas, for example, by a communication module (1090). A signal or power may be transmitted or received between the communication module (1090) and an external electronic device through the selected at least one antenna. According to some embodiments, in addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module (1097).

[0125] According to various embodiments, the antenna module (1097) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., mmWave band), and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top surface or side surface) of the printed circuit board and capable of transmitting or receiving a signal of the specified high frequency band.

[0126] At least some of the above components can be connected to each other via a communication method between peripheral devices (e.g., bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)) and exchange signals (e.g., commands or data) with each other.

[0127] According to one embodiment, commands or data may be transmitted or received between an electronic device (1001) and an external electronic device (1004) through a server (1008) connected to a second network (1099). Each of the external electronic devices (1002, or 104) may be the same or a different type of device as the electronic device (1001). According to one embodiment, all or part of the operations performed on the electronic device (1001) may be performed on one or more of the external electronic devices (1002, 104, or 108). For example, if the electronic device (1001) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (1001) may request one or more external electronic devices to perform at least part of the function or service instead of performing the function or service itself or additionally. One or more external electronic devices that receive the above request may execute at least part of the requested function or service, or additional function or service related to the request, and transmit the result of the execution to the electronic device (1001). The electronic device (1001) may provide the result as is or additionally processed as at least part of the response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device (1001) may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device (1004) may include an Internet of Things (IoT) device. The server (1008) may be an intelligent server using machine learning and / or neural networks.According to one embodiment, an external electronic device (1004) or server (1008) may be included within the second network (1099). The electronic device (1001) may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0128] For one or more embodiments, at least one of the components described in one or more of the prior art drawings may be configured to perform one or more operations, techniques, processes and / or methods as described in the present disclosure. For example, a processor (e.g., a baseband processor) described in the present disclosure in relation to one or more of the prior art drawings may be configured to operate according to one or more examples described in the present disclosure. As another example, circuits associated with user equipment (UE), a base station, a network element, etc., as described above in relation to one or more of the prior art drawings may be configured to operate according to one or more examples described herein.

[0129] Any of the embodiments described above may be combined with any other embodiment (or combination of embodiments) unless otherwise explicitly stated. The foregoing description of one or more embodiments is for illustrative and explanatory purposes only, and is not intended to limit or exhaust the scope of the embodiments in the exact form disclosed. Modifications and variations are possible in light of the foregoing teachings or may be obtained from the practice of various embodiments.

[0130] The electronic device according to the various embodiments disclosed in this document may be of various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, an electronic device, or a consumer electronics device. The electronic device according to the embodiments of this document is not limited to the devices described above.

[0131] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise. In this document, phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B or C," "at least one of A, B and C," and "at least one of A, B, or C" may each include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0132] The term “module” as used in the various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0133] Various embodiments of the present document may be implemented as software (e.g., program (1040)) comprising one or more instructions stored in a storage medium (e.g., internal memory (1036) or external memory (1038)) readable by a machine (e.g., electronic device (1001)). For example, a processor (e.g., processor (1020)) of the machine (e.g., electronic device (1001)) may call at least one of the one or more instructions stored from the storage medium and execute it. This enables the machine to be operated to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0134] According to one embodiment, the method according to the various embodiments disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0135] According to various embodiments, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to various embodiments, one or more of the components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to various embodiments, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In a battery assembly; A plurality of electrode layers arranged in a stacked manner, wherein at least one electrode layer among the plurality of electrode layers has a curved shape with respect to one plane and comprises an anode plate, a cathode plate, a separator disposed between the anode plate and the cathode plate, at least one anode tab connected to the anode plate, and at least one cathode tab connected to the cathode plate; Separators disposed between two adjacent electrode layers among the plurality of electrode layers; A first conductive portion coupled to the positive tabs of the plurality of electrode layers; and It includes a second conductive portion coupled to the negative tabs of the plurality of electrode layers, and Among the above anode tabs, at least two anode tabs corresponding to different electrode layers are welded, and Among the above cathode tabs, at least two cathode tabs corresponding to different electrode layers are welded, and At least two of the above-mentioned welded anode tabs are aligned in a first linear direction toward the central region of the curved shape, and The above-mentioned welded at least two cathode tabs are aligned in a second linear direction toward the center region of the curved shape, Battery assembly.

2. In Claim 1, The at least one positive tab of each electrode layer is positioned to protrude in a first direction parallel to the one plane, and The at least one cathode tab of each electrode layer is positioned to protrude in a second direction opposite to the first direction, and The first conductive portion is disposed on a first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked, and The second conductive portion is disposed on a second surface facing the second direction of the assembly in which the plurality of electrode layers are stacked. Battery assembly.

3. In Claim 2, The above plurality of electrode layers have curved shapes of different lengths, Based on the stacking direction of the plurality of electrode layers, the curvature of the upper electrode layer among the plurality of electrode layers is smaller than the curvature of the lower electrode layer among the plurality of electrode layers. Battery assembly.

4. In Claim 1, The plurality of electrode layers above include a first electrode layer and a second electrode layer disposed above the first electrode layer, and The above at least two positive tabs include a first positive tab of the first electrode layer and a second positive tab of the second electrode layer, and The first electrode layer comprises a first end near the first positive tab and a second end far from the first positive tab, and The second electrode layer comprises a first end near the second positive tab and a second end far from the second positive tab, and The distance between the first end of the second electrode layer and the second positive tab is longer than the distance between the first end of the first electrode layer and the first positive tab. Battery assembly.

5. In Claim 1, The plurality of electrode layers above include a first electrode layer and a second electrode layer disposed above the first electrode layer, and The above at least two cathode tabs include a first cathode tab of the first electrode layer and a second cathode tab of the second electrode layer, and The first electrode layer comprises a first end close to the first cathode tab and a second end far from the first cathode tab, and The second electrode layer comprises a first end close to the second cathode tab and a second end far from the second cathode tab, and The distance between the first end of the second electrode layer and the second cathode tab is longer than the distance between the first end of the first electrode layer and the first cathode tab. Battery assembly.

6. In Claim 1, The above anode tabs further include a second set of anode tabs corresponding to different electrode layers, and The above cathode tabs further include a second set of cathode tabs corresponding to different electrode layers, and The second set of anode tabs are welded together and aligned in a third linear direction toward the central region of the curved shape, and The second set of cathode tabs are welded to each other and aligned in a fourth linear direction toward the central region of the curved shape, Battery assembly.

7. In Claim 6, The plurality of electrode layers include a first electrode layer and a second electrode layer disposed above the first layer, and The distance between the anode tab corresponding to the second electrode layer among the at least two anode tabs and the anode tab corresponding to the second electrode layer among the second set of anode tabs is longer than the distance between the anode tab corresponding to the first electrode layer among the at least two anode tabs and the anode tab corresponding to the first electrode layer among the second set of anode tabs. Battery assembly.

8. In Claim 1, The above at least one positive tab is positioned to protrude in a first direction parallel to the above one plane, and The above at least one cathode tab is positioned to protrude in the first direction, and The first conductive portion is disposed on a first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked, and The second conductive portion is disposed on the first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked. Battery assembly.

9. In Claim 8, It further includes a battery protection circuit disposed on the first surface, and The battery protection circuit above is electrically connected to the first conductive part and the second conductive part, Battery assembly.

10. In Claim 1, A first lead tab coupled to the first conductive portion; and A second lead tab further comprising a second conductive portion coupled to the second conductive portion, Battery assembly.

11. In an electronic device, Battery assembly having a curved shape; It includes a power circuit connected to the above battery assembly, and The above battery assembly is: A plurality of electrode layers arranged in a stacked manner, wherein at least one electrode layer among the plurality of electrode layers has a curved shape with respect to one plane and comprises an anode plate, a cathode plate, a separator disposed between the anode plate and the cathode plate, at least one anode tab connected to the anode plate, and at least one cathode tab connected to the cathode plate; Separators disposed between two adjacent electrode layers among the plurality of electrode layers; A first conductive portion coupled to the positive tabs of the plurality of electrode layers; and It includes a second conductive portion coupled to the negative tabs of the plurality of electrode layers, and Among the above anode tabs, at least two anode tabs corresponding to different electrode layers are welded, and Among the above cathode tabs, at least two cathode tabs corresponding to different electrode layers are welded, and At least two of the above-mentioned welded anode tabs are aligned in a first linear direction toward the central region of the curved shape, and The above-mentioned welded at least two cathode tabs are aligned in a second linear direction toward the center region of the curved shape, Electronic device.

12. In Claim 11, The at least one positive tab of each electrode layer is positioned to protrude in a first direction parallel to the one plane, and The at least one cathode tab of each electrode layer is positioned to protrude in a second direction opposite to the first direction, and The first conductive portion is disposed on a first surface facing the first direction of the assembly in which the plurality of electrode layers are stacked, and The second conductive portion is disposed on a second surface facing the second direction of the assembly in which the plurality of electrode layers are stacked. Electronic device.

13. In Claim 12, The above plurality of electrode layers have curved shapes of different lengths, Based on the stacking direction of the plurality of electrode layers, the curvature of the upper electrode layer among the plurality of electrode layers is smaller than the curvature of the lower electrode layer among the plurality of electrode layers. Electronic device.

14. In Claim 11, The plurality of electrode layers above include a first electrode layer and a second electrode layer disposed above the first electrode layer, and The above at least two positive tabs include a first positive tab of the first electrode layer and a second positive tab of the second electrode layer, and The first electrode layer comprises a first end near the first positive tab and a second end far from the first positive tab, and The second electrode layer comprises a first end near the second positive tab and a second end far from the second positive tab, and The distance between the first end of the second electrode layer and the second positive tab is longer than the distance between the first end of the first electrode layer and the first positive tab. Electronic device.

15. In Claim 11, The plurality of electrode layers above include a first electrode layer and a second electrode layer disposed above the first electrode layer, and The above at least two cathode tabs include a first cathode tab of the first electrode layer and a second cathode tab of the second electrode layer, and The first electrode layer comprises a first end close to the first cathode tab and a second end far from the first cathode tab, and The second electrode layer comprises a first end close to the second cathode tab and a second end far from the second cathode tab, and The distance between the first end of the second electrode layer and the second cathode tab is longer than the distance between the first end of the first electrode layer and the first cathode tab. Electronic device.

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