Battery, electronic device comprising same, and manufacturing method therefor

Abstract

The battery according to an embodiment of the present disclosure may comprise: a case; and a battery cell disposed inside the case and comprising a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, wherein the positive electrode comprises: a positive electrode current collector comprising a first surface facing a first direction and a second surface facing a second direction opposite to the first direction; a first positive electrode tab comprising a connection part connected to a part of the first surface of the positive electrode current collector; a second positive electrode tab comprising a connection part connected to a part of the second surface of the positive electrode current collector; a first positive electrode active layer applied to the first surface of the first positive electrode current collector and the connection part of the first positive electrode tab; and a second positive electrode active layer applied to the second surface of the positive electrode current collector and the connection part of the second positive electrode tab.

Description

Battery, electronic device including the same, and method of manufacturing the same

[0001] Various embodiments of the present disclosure relate to batteries, for example, batteries and electronic devices including the same.

[0002] Driven by remarkable advancements in information and communication technology and semiconductor technology, the distribution and use of various electronic devices are increasing rapidly. In particular, recent electronic devices are being developed to enable portable communication.

[0003] The term "electronic device" refers to a device that performs specific functions according to an installed program, ranging from home appliances to electronic notebooks, portable multimedia players, mobile communication terminals, tablet PCs, video / audio devices, desktop / laptop computers, and in-car navigation systems. For example, these electronic devices can output stored information as sound or video. As the integration density of electronic devices increases and ultra-high-speed, high-capacity wireless communication becomes commonplace, various functions can recently be integrated into a single electronic device, such as a mobile communication terminal. For instance, not only communication functions but also entertainment functions like games, multimedia functions like music / video playback, communication and security functions like mobile banking, and functions such as schedule management or electronic wallets are being integrated into a single electronic device.

[0004] With the increase in the usage time of electronic devices, there is a demand to increase battery capacity and reduce the mounting space occupied by the battery to enable miniaturization. As battery capacity increases and miniaturization occurs, there have been difficulties in securing space for tab bending and ensuring stability to prevent battery short circuits.

[0005] The information described above may be provided as background 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.

[0006] A battery according to one embodiment of the present disclosure comprises: a case; and a battery cell disposed inside the case and comprising a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, wherein the positive electrode may comprise: a positive current collector comprising a first surface facing a first direction and a second surface facing a second direction opposite to the first direction; a first positive tab comprising a connection portion connected to a part of the first surface of the positive current collector; a second positive tab comprising a connection portion connected to a part of the second surface of the positive current collector; a first positive active layer applied to the first surface of the first positive current collector and the connection portion of the first positive tab; and a second positive active layer applied to the second surface of the positive current collector and the connection portion of the second positive tab.

[0007] An electronic device according to one embodiment of the present disclosure comprises: a housing; and a battery disposed inside the housing, the battery comprising a case forming the exterior of the battery and a plurality of battery cells disposed inside the case, wherein each of the plurality of battery cells comprises a first positive electrode, a negative electrode spaced apart from the first positive electrode, and a separator disposed between the first positive electrode and the negative electrode, and the first positive electrode comprises a first positive current collector having a first surface facing a first direction and a second surface facing a second direction opposite to the first direction, a first-1 positive electrode substrate having a first-1 connection part and a first-2 connection part respectively connected to one end of both sides of the first positive current collector, and a first-1 extension part extending from the first-1 connection part in a direction away from the first-1 positive current collector. The first positive active layer comprises a first positive active portion applied to the first surface of the first positive current collector, and further comprises a first positive active portion covering a first positive connection portion that extends from the first positive active portion and is disposed between the first positive active layer and the first positive current collector so as to be protected by the first positive active layer, and the extension portion of the plurality of battery cells may include a first bend portion that is bent to form an electrode tab connected to an electronic component of the electronic device outside the case.

[0008] A method for manufacturing a battery of an electronic device according to one embodiment of the present disclosure may include: a first positive current collector providing operation of providing a first positive current collector comprising two metal layers and a film layer between the two metal layers; a coupling operation of connecting a portion of another single second positive current collector to one end of the first positive current collector; a coating operation of applying a first positive active layer to the first positive current collector and the second positive current collector; and a battery cell coupling operation of stacking a separator and a negative electrode while the first positive active layer is coated on the first positive current collector and the second positive current collector.

[0009] The aspects, configurations, and / or advantages described above regarding various embodiments of the present disclosure may become more apparent from the following detailed description with reference to the accompanying drawings.

[0010] FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments.

[0011] FIG. 2 is a perspective view showing the front of an electronic device according to one embodiment of the present disclosure.

[0012] FIG. 3 is a perspective view showing the rear side of an electronic device according to one embodiment of the present disclosure.

[0013] FIG. 4 is an exploded perspective view showing the front of an electronic device according to one embodiment of the present disclosure.

[0014] FIG. 5 is an exploded perspective view showing the rear side of an electronic device according to one embodiment of the present disclosure.

[0015] FIG. 6 is a perspective view showing the front of a battery according to one embodiment of the present disclosure.

[0016] FIG. 7 is a perspective view conceptually showing cross-section A-A' of the battery shown in FIG. 6 according to one embodiment of the present disclosure.

[0017] FIG. 8 is a conceptual diagram of an enlarged area S2 shown in FIG. 7 according to one embodiment of the present disclosure.

[0018] FIG. 9a is an enlarged conceptual diagram of the region S4 shown in FIG. 8 according to one embodiment of the present disclosure.

[0019] FIG. 9b is an enlarged conceptual diagram of a part of a battery cell according to one embodiment of the present disclosure.

[0020] FIG. 10 is a conceptual diagram of an enlarged area S3 shown in FIG. 7 according to one embodiment of the present disclosure.

[0021] FIG. 11a is an enlarged conceptual diagram of a portion of a battery cell according to one embodiment of the present disclosure.

[0022] FIG. 11b is an enlarged conceptual diagram of a portion of a battery cell according to one embodiment of the present disclosure.

[0023] FIG. 12 is a perspective view conceptually showing cross-section A-A' of the battery illustrated in FIG. 6 according to one embodiment of the present disclosure.

[0024] FIG. 13 is a drawing illustrating a method for manufacturing a battery according to one embodiment of the present disclosure.

[0025] FIG. 14 is a drawing illustrating a method for manufacturing a battery according to one embodiment of the present disclosure.

[0026] FIG. 15 is a drawing illustrating a method for manufacturing a battery according to one embodiment of the present disclosure.

[0027] Throughout the attached drawings, similar parts, configurations, and / or structures may be assigned similar reference numbers.

[0028] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to one embodiment.

[0029] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network) or with at least one of an electronic device (104) or a server (108) through a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) through a server (108). According to one embodiment, the electronic device (101) may include a processor (120), memory (130), input module (150), sound output module (155), display module (160), audio module (170), sensor module (176), interface (177), connection terminal (178), haptic module (179), camera module (180), power management module (188), battery (189), communication module (190), subscriber identification module (196), or antenna module (197). In some embodiments, at least one of these components (e.g., connection terminal (178)) may be omitted from the electronic device (101), or one or more other components may be added. In some embodiments, some of these components (e.g., sensor module (176), camera module (180), or antenna module (197)) may be integrated into a single component (e.g., display module (160)).

[0030] The processor (120) can control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) by executing software (e.g., a program (140)), and can perform various data processing or operations. According to one embodiment, as at least part of the data processing or operations, the processor (120) can store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in volatile memory (132), process the commands or data stored in volatile memory (132), and store the resulting data in non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) 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 (101) includes a main processor (121) and an auxiliary processor (123), the auxiliary processor (123) may be configured to use lower power than the main processor (121) or to be specialized for a designated function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as part thereof.

[0031] The auxiliary processor (123) may control at least some of the functions or states associated with at least one component of the electronic device (101) (e.g., display module (160), sensor module (176), or communication module (190)) on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. According to one embodiment, the auxiliary processor (123) (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module (180) or communication module (190)). According to one embodiment, the auxiliary processor (123) (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 (101) itself where the artificial intelligence model is executed, or through a separate server (e.g., server (108)). 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.

[0032] The memory (130) can store various data used by at least one component of the electronic device (101) (e.g., processor (120) or sensor module (176)). The data may include, for example, input data or output data for software (e.g., program (140)) and related commands. The memory (130) may include volatile memory (132) or non-volatile memory (134).

[0033] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0034] The input module (150) can receive commands or data to be used for a component of the electronic device (101) (e.g., processor (120)) from outside the electronic device (101) (e.g., user). The input module (150) 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).

[0035] The sound output module (155) can output a sound signal to the outside of the electronic device (101). The sound output module (155) 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.

[0036] The display module (160) can visually provide information to an external (e.g., user) of the electronic device (101). The display module (160) 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 (160) 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.

[0037] The audio module (170) can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150) or output sound through the sound output module (155) or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphones) connected directly or wirelessly to the electronic device (101).

[0038] The sensor module (176) can detect the operating state of the electronic device (101) (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 (176) 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.

[0039] The interface (177) may support one or more specified protocols that can be used for the electronic device (101) to be connected directly or wirelessly to an external electronic device (e.g., electronic device (102)). According to one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0040] The connection terminal (178) may include a connector through which the electronic device (101) can be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0041] The haptic module (179) 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 (179) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

[0042] The camera module (180) can capture still images and video. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0043] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least part of a power management integrated circuit (PMIC).

[0044] The battery (189) can supply power to at least one component of the electronic device (101). According to one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0045] The communication module (190) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between an electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may include one or more communication processors that operate independently of the processor (120) (e.g., application processor) and support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., cellular communication module, short-range wireless communication module, or GNSS (global navigation satellite system) communication module) or a wired communication module (194) (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 (104) through a first network (198) (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (199) (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 (192) can identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) using subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module (196).

[0046] The wireless communication module (192) 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 (enhanced mobile broadband (eMBB)), minimization of terminal power and connection of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low-latency communications (URLLC)). The wireless communication module (192) can support a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate, for example. The wireless communication module (192) 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 (192) can support various requirements specified in the electronic device (101), external electronic device (e.g., electronic device (104)), or network system (e.g., second network (199)). According to one embodiment, the wireless communication module (192) 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.

[0047] An antenna module (197) 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 (197) 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 (197) 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 (198) or a second network (199), may be selected from the plurality of antennas, for example, by a communication module (190). A signal or power may be transmitted or received between the communication module (190) 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 (197).

[0048] According to one embodiment, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a circuit board, an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the 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 circuit board and capable of transmitting or receiving a signal of the specified high frequency band.

[0049] 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.

[0050] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) through a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations performed on the electronic device (101) may be performed on one or more of the external electronic devices (102, 104 or 108). For example, if the electronic device (101) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (101) 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 (101). The electronic device (101) 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 (101) may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and / or neural networks. According to one embodiment, the external electronic device (104) or the server (108) may be included within a second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0051] An electronic device (101) according to one embodiment of the present disclosure may be of various forms. The electronic device (101) 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, a wearable device, or a home appliance. An electronic device (101) according to an embodiment of the present disclosure is not limited to the aforementioned devices.

[0052] The embodiments of the present disclosure and the terms used therein are not intended to limit the technical features described in the present disclosure 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 the present disclosure, 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” each may 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.

[0053] As used in one embodiment of the present disclosure, the term “module” 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).

[0054] One embodiment of the present disclosure may be implemented as software (e.g., program (140)) comprising one or more instructions stored in a storage medium (e.g., internal memory (136) or external memory (138)) readable by a machine (e.g., electronic device (101)). For example, a processor (e.g., processor (120)) of the machine (e.g., electronic device (101)) may call at least one of the one or more instructions stored in 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.

[0055] According to one embodiment, the method according to one embodiment of the present disclosure 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 in a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0056] According to one embodiment, 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 one embodiment, one or more of the components or operations among 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.

[0057] In the following detailed description, the length direction of the electronic device (101) may be defined as the 'Y-axis direction', the width direction as the 'X-axis direction', and / or the height direction (thickness direction) as the 'Z-axis direction'. In the following detailed description, the references to length direction, width direction, and / or height direction (or thickness direction) may refer to the length direction, width direction, and / or height direction (or thickness direction) of the electronic device.

[0058] According to one embodiment, the statement that a component faces 'a certain direction' can be understood to include not only the component facing 'a direction identical to a certain direction' but also the component facing 'a direction parallel to a certain direction'. It should be noted that in the following description, when a component is said to overlap (or stacked) with another component, the description of the arrangement relationship in the height direction described above may apply.

[0059] In describing directions, if 'negative / positive (- / +)' is not indicated, it may be interpreted to include both the positive and negative directions unless otherwise defined. For example, the 'Z-axis direction' may be interpreted to include both the +Z direction and the -Z direction. Similarly, the 'X-axis direction' may be interpreted to include both the +X direction and the -X direction, and the 'Y-axis direction' may be interpreted to include both the +Y direction and the -Y direction. However, in the XYZ spatial coordinate system depicted in the drawing, if 'negative / positive (- / +)' is not indicated on an axis, that axis may be interpreted to face the positive direction unless otherwise specified. In describing directions, facing any one of the three axes of the Cartesian coordinate system may include facing a direction parallel to said axis.

[0060] In the following description of the electronic device (e.g., 101 in FIG. 2), the ‘first direction’ may mean the +Z-axis direction or a direction parallel to the +Z-axis. The ‘second direction’ may mean the -Z-axis direction or a direction parallel to the -Z-axis direction. The ‘third direction’ may mean the X-axis or Y-axis direction or a direction parallel thereto. The ‘third direction’ may mean a direction perpendicular to the ‘first direction’ or the ‘second direction’. Note that the foregoing description is based on the orthogonal coordinate system described in the drawings for the sake of brevity, and that the description of these directions or components does not limit the various embodiments of the present disclosure.

[0061] Although specific embodiments have been described in the detailed description of the present disclosure, it will be obvious to those skilled in the art that various modifications are possible within the scope of the present disclosure.

[0062] FIG. 2 is a perspective view showing the front of an electronic device according to one embodiment of the present disclosure.

[0063] FIG. 3 is a perspective view showing the rear side of an electronic device according to one embodiment of the present disclosure.

[0064] The configurations described with reference to FIGS. 2 and 3 may be substantially identical to the configurations described with reference to FIG. 1. The configurations described with reference to FIGS. 2 and 3 may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIGS. 4 through 15 to the extent that they do not conflict. The embodiments of FIGS. 2 and 3 may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIGS. 4 through 15. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIGS. 4 through 15 to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 1.

[0065] Referring to FIGS. 2 and 3, an electronic device (101) according to one embodiment (e.g., the electronic device (101) of FIG. 1) may include a housing (210) comprising a first surface (or front) (210A), a second surface (or rear) (210B), and a side (210C) surrounding the space between the first surface (210A) and the second surface (210B). In one embodiment (not shown), the housing (210) may refer to a structure forming some of the first surface (210A) of FIG. 2, the second surface (210B) and the side (210C) of FIG. 3. According to one embodiment, the first surface (210A) may be formed by a front plate (202) (e.g., a glass plate or a polymer plate including various coating layers) in which at least a portion is substantially transparent. The second surface (210B) may be formed by a substantially opaque plate (211). The rear plate (211) may be formed by, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials. The side surface (210C) may be formed by a side structure (or "side bezel structure") (218) comprising metal and / or polymer, which is combined with the front plate (202) and the rear plate (211). In one embodiment, the rear plate (211) and the side structure (218) may be formed integrally and may comprise the same material (e.g., a metallic material such as aluminum).

[0066] Although not illustrated, the front plate (202) may include region(s) that are curved and seamlessly extended toward the rear plate (211) at least a portion of the edge. In one embodiment, the front plate (202) (or the rear plate (211)) may include only one of the regions that are curved and extended toward the rear plate (211) (or the front plate (202)) at one edge of the first surface (210A). Depending on the embodiment, the front plate (202) or the rear plate (211) may be substantially flat. For example, it may not include a curved and extended region. If it includes a curved and extended region, the thickness of the electronic device (101) in the portion containing the curved and extended region may be smaller than the thickness of the other portion.

[0067] According to one embodiment, the electronic device (101) may include at least one of a display (220), an audio module (203, 207, 214), a sensor module (204, 219), a camera module (205, 212, 213), a key input device (217), a light-emitting element (206), and a connector hole (208, 209). In one embodiment, the electronic device (101) may omit at least one of the components (e.g., a key input device (217), or a light-emitting element (206)) or additionally include other components.

[0068] The display (220) may be visually exposed, for example, through a significant portion of the front plate (202). In one embodiment, at least a portion of the display (220) may be visually exposed through the front plate (202) forming the first surface (210A) or through a portion of the side (210C). In one embodiment, the connection portion of the display (220) may be formed to be generally identical to the adjacent outer shape of the front plate (202). In one embodiment (not shown), in order to expand the area where the display (220) is visually exposed, the gap between the outer edge of the display (220) and the outer edge of the front plate (202) may be formed to be generally identical.

[0069] In one embodiment (not shown), a recess or opening is formed in a part of the screen display area of ​​the display (220), and at least one of an audio module (214), a sensor module (204), a camera module (205), and a light-emitting element (206) may be included that are aligned with the recess or the opening. In one embodiment (not shown), at least one of an audio module (214), a sensor module (204), a camera module (205), a fingerprint sensor (not shown), and a light-emitting element (206) may be included on the back surface of the screen display area of ​​the display (220). In one embodiment (not shown), the display (220) may be combined with or disposed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a digitizer that detects a magnetic field type stylus pen. In one embodiment, at least a portion of the sensor module (204, 219) and / or at least a portion of the key input device (217) may be placed in the first areas (210D) and / or the second areas (210E).

[0070] The audio module (203, 207, 214) may include a microphone hole (203) and a speaker hole (207, 214). A microphone for acquiring external sound may be placed inside the microphone hole (203), and in one embodiment, a plurality of microphones may be placed to detect the direction of sound. The speaker hole (207, 214) may include an external speaker hole (207) and a receiver hole (214) for calls. In one embodiment, the speaker hole (207, 214) and the microphone hole (203) may be implemented as a single hole, or a speaker may be included without the speaker hole (207, 214) (e.g., a piezo speaker).

[0071] The sensor module (204, 219) can generate an electrical signal or data value corresponding to an internal operating state of the electronic device (101) or an external environmental state. The sensor module (204, 219) may include, for example, a first sensor module (204) (e.g., proximity sensor) and / or a second sensor module (not shown) (e.g., fingerprint sensor) disposed on a first surface (210A) of the housing (210), and / or a third sensor module (219) and / or a fourth sensor module (e.g., fingerprint sensor) disposed on a second surface (210B) of the housing (210). The fingerprint sensor may be disposed on the second surface (210B) or side (210C) as well as on the first surface (210A) (e.g., display (220)) of the housing (210). The electronic device (101) may further include at least one of, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0072] The camera module (205, 212, 213) may include a first camera device (205) disposed on a first surface (210A) of the electronic device (101), a second camera device (212) disposed on a second surface (210B), and / or a flash (213). The camera devices (205, 212) may include one or more lenses, an image sensor, and / or an image signal processor. The flash (213) may include, for example, a light-emitting diode or a xenon lamp. In one embodiment, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be disposed on one surface of the electronic device (101). In one embodiment, the flash (213) may emit infrared light, and the infrared light emitted by the flash (213) and reflected by the subject may be received through a third sensor module (219). The electronic device (101) or the processor of the electronic device (101) can detect depth information of the subject based on the time when infrared light is received from the third sensor module (219).

[0073] A key input device (217) may be disposed on a side (210C) of the housing (210). In one embodiment, the electronic device (101) may not include some or all of the aforementioned key input devices (217), and the key input devices (217) that are not included may be implemented in other forms, such as soft keys, on the display (220). In one embodiment, the key input device may include a sensor module disposed on a second side (210B) of the housing (210).

[0074] A light-emitting element (206) may be disposed, for example, on a first surface (210A) of a housing (210). The light-emitting element (206) may, for example, provide state information of an electronic device (101) in the form of light. In one embodiment, the light-emitting element (206) may, for example, provide a light source that is coupled with the operation of a camera module (205). The light-emitting element (206) may include, for example, an LED, an IR LED, and a xenon lamp.

[0075] The connector holes (208, 209) may include a first connector hole (208) capable of receiving a connector (e.g., a USB connector) for transmitting and receiving power and / or data with an external electronic device, and a second connector hole (e.g., an earphone jack) (209) capable of receiving a connector for transmitting and receiving audio signals with an external electronic device.

[0076] FIG. 4 is an exploded perspective view showing the front of an electronic device according to one embodiment of the present disclosure.

[0077] FIG. 5 is an exploded perspective view showing the rear side of an electronic device according to one embodiment of the present disclosure.

[0078] The configurations described with reference to FIGS. 4 and 5 may be substantially identical to the configurations described with reference to FIGS. 1 through 3. The configurations described with reference to FIGS. 4 and 5 may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIGS. 6 through 15 to the extent that they do not conflict. The embodiments of FIGS. 4 and 5 may be combined to the extent that they do not conflict with the embodiments of FIGS. 4 through 15 of the present disclosure. Configurations not described below may be substantially identical to the configurations according to an embodiment of FIGS. 4 through 15 of the present disclosure to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of FIGS. 1 through 3 of the present disclosure.

[0079] Referring to FIGS. 4 and 5, an electronic device (101) (e.g., electronic device (101) of FIG. 1 or FIG. 2) may include a side structure (310), a first support member (311) (e.g., a bracket), a front plate (320) (e.g., front plate (202) of FIG. 1), a display (330) (e.g., display module (160) of FIG. 1, display (220) of FIG. 2), at least one printed circuit board (or board assembly) (340a, 340b), a battery (401), a second support member (360) (e.g., a rear case), an antenna, a camera assembly (307), and a rear plate (380) (e.g., rear plate (211) of FIG. 2). When including a plurality of printed circuit boards (340a, 340b), the electronic device (101) may include at least one flexible printed circuit board (340c) to electrically connect different printed circuit boards. For example, the printed circuit boards (340a, 340b) may include a first circuit board (340a) positioned above the battery (401) and a second circuit board (340b) positioned below it, and the flexible printed circuit board (340c) may electrically connect the first circuit board (340a) and the second circuit board (340b).

[0080] According to one embodiment, the electronic device (101) may omit at least one of the components (e.g., a first support member (311), or a second support member (360)) or additionally include other components. At least one of the components of the electronic device (101) may be identical or similar to at least one of the components of the electronic device (101) of FIG. 1 or FIG. 2, and redundant descriptions are omitted below.

[0081] The first support member (311) may be provided in a flat shape for at least a portion. In one embodiment, the first support member (311) may be placed inside the electronic device (101) and connected to the side structure (310), or may be formed integrally with the side structure (310). The first support member (311) may be formed from, for example, a metal material and / or a non-metal (e.g., a polymer) material. When the first support member (311) is formed at least partially from a metal material, the side structure (310) or a portion of the first support member (311) may function as an antenna. The first support member (311) may have a display (330) attached to one side and a printed circuit board (340a, 340b) attached to the other side. A processor, memory, and / or interface may be mounted on the printed circuit board (340a, 340b). The processor may include, for example, one or more of a central processing unit, an application processor, a graphics processing unit, an image signal processor, a sensor hub processor, or a communication processor.

[0082] The first support member (311) may be named "support member". The housing (301) may include the support member (311). The support member (311) may face the front plate (320). The support member (311) may face the rear plate (380). The support member (311) may be made of reinforced plastic or metal.

[0083] The support member (311) may include a support body (3111). The support body (3111) may have a flat shape. The support body (3111) may provide a space in which a battery (401) or a printed circuit board (340a, 340b) is placed.

[0084] The support member (311) may include an end portion (3112). The end portion (3112) may be integral with the support body (3111). The end portion (3112) may be formed along the perimeter of the support body (3111). The end portion (3112) may extend along the perimeter of the side structure (310). The end portion (3112) may be integral with the side structure (310).

[0085] The front plate (320) may be named "cover" or "front cover". The rear plate (380) may be named "cover" or "rear cover". The cover (380) may face the support member (311).

[0086] The cover (380) may include a cover body (381). The cover body (381) may be flat. The cover body (381) may face the support body (3111).

[0087] The cover (380) may include a cover edge (382). The cover edge (382) may be integral with the cover body (381). The cover edge (382) may extend along the direction in which the end (3112) of the support member (311) extends. The cover edge (382) may face the end (3112) of the support member (311). The cover edge (382) may be joined to the end (3112) of the support member (311). The cover edge (382) may be named a "joint part".

[0088] According to one embodiment, the first support member (311) and the side structure (310) may be combined and referred to as a front case or housing (301). According to one embodiment, the housing (301) may be understood as a structure for generally accommodating, protecting, or housing a printed circuit board (340a, 340b) or a battery (401). In one embodiment, the housing (301) may be understood as comprising a structure that a user can visually or tactilely perceive from the exterior of the electronic device (101), such as a side structure (310), a front plate (320), and / or a rear plate (380). The housing (301) may include a side structure (310), a first support member (311), a front plate (320), and a rear plate (380). In one embodiment, the phrase “front or rear of the housing (301)” may refer to the first surface (210A) of FIG. 1 or the second surface (210B) of FIG. 2. In one embodiment, the first support member (311) is positioned between the front plate (320) (e.g., the first surface (210A) of FIG. 1) and the rear plate (380) (e.g., the second surface (210B) of FIG. 2) and may function as a structure for positioning electrical / electronic components such as printed circuit boards (340a, 340b) or a camera assembly (307).

[0089] Memory may include, for example, volatile memory or non-volatile memory.

[0090] The interface may include, for example, an HDMI (high definition multimedia interface), a USB (universal serial bus) interface, an SD card interface, and / or an audio interface. The interface may, for example, electrically or physically connect the electronic device (101) to an external electronic device and may include a USB connector, an SD card / MMC connector, or an audio connector.

[0091] The second support member (360) may include, for example, an upper support member (360a) and a lower support member (360b). In one embodiment, the upper support member (360a) may be arranged to surround a printed circuit board (340a, 340b) (e.g., the first circuit board (340a)) together with a part of the first support member (311). For example, the upper support member (360a) of the second support member (360) may be arranged to face the first support member (311) with the first circuit board (340a) in between. In one embodiment, the lower support member (360b) of the second support member (360) may be arranged to face the first support member (311) with the second circuit board (340b) in between. Circuit devices (e.g., processors, communication modules, or memory) implemented in the form of integrated circuit chips or various electrical / electronic components may be placed on printed circuit boards (340a, 340b), and according to the embodiment, the printed circuit boards (340a, 340b) may be provided with an electromagnetic shielding environment from the second support member (360). In one embodiment, the lower support member (360b) may be utilized as a structure capable of placing electrical / electronic components such as a speaker module and an interface (e.g., a USB connector, an SD card / MMC connector, or an audio connector). In one embodiment, electrical / electronic components such as a speaker module and an interface (e.g., a USB connector, an SD card / MMC connector, or an audio connector) may be placed on an additional printed circuit board not illustrated. For example, the lower support member (360b) may be placed to enclose an additional printed circuit board together with another part of the first support member (311). An additional printed circuit board not shown or a speaker module or interface placed on a lower support member (360b) may be placed correspondingly to the audio module (207) or connector hole (208, 309) of FIG. 1.

[0092] The battery (401) is a device for supplying power to at least one component of the electronic device (101) and may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery (401) may be disposed substantially coplanar with, for example, the printed circuit board (340a, 340b). The battery (401) may be disposed integrally inside the electronic device (101) or may be disposed detachably from the electronic device (101).

[0093] Although not illustrated, the antenna may include a conductive pattern implemented on the surface of the second support member (360) through, for example, a laser direct structuring method. In one embodiment, the antenna may include a printed circuit pattern formed on the surface of a thin film, and the antenna in the form of a thin film may be placed between the rear plate (380) and the battery (401). The antenna may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The antenna may, for example, communicate near-field with an external device or wirelessly transmit and receive power required for charging. In one embodiment, other antenna structures may be formed by a part or combination thereof of the side structure (310) and / or the first support member (311).

[0094] According to one embodiment, the camera assembly (307) may include at least one camera module. Inside the electronic device (101), the camera assembly (307) (or at least one camera module) may receive at least a portion of light incident through an optical hole or camera window (312, 313, 319). In one embodiment, the camera assembly (307) may be placed on a first support member (311) at a location adjacent to a printed circuit board (340a, 340b). In one embodiment, the camera module(s) of the camera assembly (307) may be largely aligned with any one of the camera windows (312, 313, 319) and may be at least partially wrapped in a second support member (360) (e.g., an upper support member (360a)).

[0095] The electronic device described in this disclosure is not limited to the electronic device described with reference to FIGS. 2 to 5, but can be applied to all electronic devices equipped with batteries, including rollable electronic devices, foldable electronic devices, and wearable electronic devices.

[0096] FIG. 6 is a perspective view showing the front of a battery according to one embodiment of the present disclosure.

[0097] FIG. 7 is a perspective view conceptually showing cross-section A-A' of the battery shown in FIG. 6 according to one embodiment of the present disclosure.

[0098] FIG. 8 is a conceptual diagram of an enlarged area S2 shown in FIG. 7 according to one embodiment of the present disclosure.

[0099] The battery configurations described with reference to FIGS. 6 through 8 may be substantially identical to the configurations described with reference to FIGS. 1 through 5 to the extent that they do not conflict. The battery configurations described with reference to FIGS. 6 through 8 may be substantially identical to the configurations described with reference to FIGS. 9a through 15 to the extent that they do not conflict. The embodiments described with reference to FIGS. 6 through 8 may be combined with the embodiments described with reference to FIGS. 1 through 5 and FIGS. 9a through 15 to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations described with reference to FIGS. 1 through 5 and FIGS. 9a through 15 to the extent that they do not conflict.

[0100] According to one embodiment, an electronic device (e.g., 101 of FIG. 2) may include a battery (401). The battery (401) may include a case (402). The battery (401) may include a case (402) that forms the exterior of the battery. The case (402) may include a first cover (402a), a second cover (402b) facing in the opposite direction to the first cover (402a), and a third cover (402c) that surrounds the space between the first cover (402a) and the second cover (402b). The case (402) may be made of a pouch structure. The case (402) may be made of a can structure or a column-shaped structure. The case (402) may accommodate cells (403) placed inside the battery. The case (402) may protect the battery cells (403) from external impact. The case (402) may be formed such that a positive tab connected from a positive layer (e.g., a first positive layer (410)) or a negative tab connected from a negative layer (430) protrudes outward through each lead tab (e.g., a first lead tab (40411)). The case (402) may be formed such that a portion protrudes to form a tab portion (404), and the tab portion (404) is welded to the first lead tab (40411) to supply power to an external component. Hereinafter, the battery cell may refer to a configuration comprising a first positive layer (410), a separator (420), and a negative layer (430).

[0101] According to one embodiment, the battery (401) may include battery cells (403). The battery cells (403) may be placed inside the case (402) of the battery. The battery (401) may include a plurality of battery cells (403). Each of the plurality of battery cells (403) may be stacked in a first direction (+Z direction). Each of the plurality of battery cells (403) may include a first positive layer (410), a separator (420), and a negative layer (430). The first positive layer (410), the separator (420), and the negative layer (430) constituting each of the plurality of battery cells (403) may have a structure in which the first positive layer (410) and the negative layer (430) are stacked with the separator (420) in between. Each of the plurality of battery cells (403) may be stacked in a first direction (+Z direction) with the separator (420) in between.

[0102] According to one embodiment, the battery (401) may include a first positive layer (410). The first positive layer (410) may be disposed between two spaced-apart second positive layers (440a, 440b). The second positive layers (440a, 440b) may have a positive active layer applied on one side of the positive current collector facing inward toward the battery. The second positive layers (440a, 440b) may include a second-1 positive layer (440a) and a second-2 positive layer (440b). The battery (401) may include a plurality of first positive layers (410). A plurality of first positive layers (410) may be disposed between spaced-apart second-1 positive layers (440a) and second-2 positive layers (440b). A plurality of first anode layers (410) may be spaced apart from each other with a separator (420) in between. A plurality of first anode layers (410) may be spaced apart from each other with a separator (420) and a cathode layer (430) in between.

[0103] In the present disclosure, the first anode layer (410) may be named as a cathode, a cathode disposed inside a case (402), or a cathode of a battery cell (403).

[0104] According to one embodiment, the first anode layer (or anode) (410) may include a first anode current collector layer (411). Each of the plurality of first anode layers (410) may include a first anode current collector layer (411). The first anode current collector layer (411) may be disposed between a first-1 anode active layer (413a) and a first-2 anode active layer (413b) that are spaced apart from each other. The first anode current collector layer (411) may include a first surface facing a first direction (e.g., 411a in FIG. 9b). The first anode current collector layer (411) may include a second surface facing a second direction opposite to the first direction (e.g., 411b in FIG. 9b). The first anode current collector layer (411) may include a polymer composite substrate. For example, the first positive current collector layer (411) may include a film layer (e.g., a PET (polyethylene terephthalate) layer), and a metal layer (e.g., an aluminum (Al) layer) may be disposed in both directions of the PET layer. The first positive current collector layer (411) may be named the first positive electrode plate. The first positive current collector layer (411) may be extended to form part of the first electrode tab (4041).

[0105] In the present disclosure, the first positive current collector layer (411) may be named a positive current collector (cathode collector).

[0106] According to one embodiment, the first anode layer (410) may include a first-1 anode active layer (413a) applied or disposed on a first surface (e.g., 411a in FIG. 9b) of the first anode current collector (or anode current collector) (411). The first anode active layer (413a) may be applied to a first surface (e.g., 411a in FIG. 9b) of a second region (415b) of the first anode current collector (411) and to a first-1 anode substrate (412a). For example, the first-1 anode substrate (412a) may be connected at one end of the first anode current collector (411), and the first-1 anode active layer (413a) may be applied to cover the connected portion of the first anode current collector (411) and the first-1 anode substrate (412a). The first-1 positive active layer (413a) may be applied spaced apart from the first-2 positive active layer (413b) with the first positive current collector layer (411) in between. The first-1 positive active layer (413a) may cover the first positive current collector layer (411) and the first-1 positive substrate (412a). The first-1 positive active layer (413a) may be placed in contact with or close to the separator (420) in a direction away from the first-1 positive current collector layer (411). The first-1 positive active layer (413a) may refer to a component where a chemical reaction of the battery (401) takes place.

[0107] In the present disclosure, the first-1 positive active layer (413a) may be named as the first positive active layer. Alternatively, it may be named as the first positive active layer applied to the first surface (411a) of the positive current collector (411) and the first positive tab (or first-1 positive substrate) (412a).

[0108] According to one embodiment, the first anode layer (410) may include a first-second anode active layer (413b) applied or disposed on a second surface (e.g., 411b in FIG. 9b) of the first anode current collector layer (411). The first-second anode active layer (413b) may be applied to a second surface (e.g., 411b in FIG. 9b) of a second region (415b) of the first anode current collector layer (411) and to a first-second anode substrate (412b). For example, the first-second anode substrate (412b) may be connected at one end of the first anode current collector layer (411), and the first-second anode active layer (413b) may be applied to cover the connected portion of the first anode current collector layer (411) and the first-second anode substrate (412b). The first-second positive active layer (413b) may be applied spaced apart from the first-first positive active layer (413a) with the first positive current collector layer (411) in between. The first-second positive active layer (413b) may cover the first positive current collector layer (411) and the first-second positive substrate (412b). The first-second positive active layer (413b) may be placed in contact with or close to the separator (420) in a direction away from the first positive current collector layer (411). The first-second positive active layer (413b) may refer to a component where a chemical reaction of the battery (401) takes place.

[0109] In the present disclosure, the first-second positive active layer (413b) may be named as the second positive active layer. Alternatively, it may be named as the second positive active layer applied to the second surface (411b) of the positive current collector (411) and the second positive tab (or first-second positive substrate) (412b).

[0110] According to one embodiment, the battery (401) may include a first electrode tab (4041). The first electrode tab (4041) may include a plurality of first electrode tabs (4041). The first electrode tab (4041) may be composed of a first-1 positive electrode substrate (412a) and / or a first-2 positive electrode substrate (412b). For example, one of the plurality of first electrode tabs (4041) may have a first-1 positive electrode substrate (412a) and a first-1 electrode extension (4122a) extending from the first-1 positive electrode substrate (412a) formed integrally. According to one embodiment, the first electrode tab (4041) may include a third positive electrode substrate (442).

[0111] According to one embodiment, the first electrode tab (4041) may include a first-1 positive electrode substrate (412a). The first-1 positive electrode substrate (412a) may be placed on a first surface (e.g., 411a in FIG. 9b) of the first positive electrode current collector (411). The first-1 positive electrode substrate (412a) may be placed on a first region (415a) of the first positive electrode current collector (411). A portion of the first-1 positive electrode substrate (412a) may be placed, bonded, or welded to the first surface (e.g., 411a in FIG. 9a) of the first region (415a). The first-1 positive electrode substrate (412a) may be folded at a portion corresponding to one end (421) of the separator (420), or folded and extended to form the first electrode tab (4041).

[0112] According to one embodiment, the first electrode tab (4041) may include a first-second anode substrate (412b). At least a portion of the first-second anode substrate (412b) may be placed, bonded, or welded to a second surface (e.g., 411b in FIG. 9b) of the first anode current collector (411). The first-second anode substrate (412b) may be folded or folded and extended to form the first electrode tab (4041) at a portion corresponding to / at one end (421) of the separator (420). The first-second anode substrate (412b) may be placed on the second surface (e.g., 411b in FIG. 9b) at a position corresponding to the first-first anode substrate (412a).

[0113] According to one embodiment, the positive substrate (412a, 412b) may be electrically connected to the first positive current collector (411a, 411b) in a first region (415a) of the first positive current collector (411). The positive substrate (412a, 412b) may form a first electrode tab (4041). The first electrode tab (4041) may be configured such that each first positive layer (410) forms an electrical path with an electronic component (not shown) outside the case (402).

[0114] According to one embodiment, the anode substrate (412a, 412b) may be folded and / or extended at one end (421) of the separator. However, it is not limited thereto and may be folded and / or extended at the other end (422) of the separator.

[0115] According to one embodiment, the first electrode tab (4041) may be positioned so as to be spaced apart in the X direction from the second electrode tab (4042) (or the extended negative current collector (431)) inside the case (402). For example, the first electrode tab (4041) and the second electrode tab (4042) may be extended so as not to come into contact with each other and electrically connected to each lead tab (e.g., the lead tab (40411) connected to the first electrode tab (4041)) so as to protrude outside the battery (401).

[0116] According to one embodiment, the battery (401) may include a lead tab (40411). The lead tab (40411) may be disposed inside a case (402). The lead tab (40411) may be electrically connected to a first electrode tab (4041) inside the case (402). The lead tab (40411) may be electrically connected to the first electrode tab (4041) through first-1 electrode extensions (4122a) and / or first-2 electrode extensions (4122b). For example, a plurality of first electrode tabs (4041) (or first-1 electrode extensions (4122a) and / or first-2 electrode extensions (4122b)) may be connected to and extended by the first positive current collector layer (411), bent in the Z-axis direction, and overlapped to be electrically connected to each other, thereby being electrically connected to the lead tab (40411). Alternatively, the lead tab (40411) may be bonded and / or welded in an area (S1) corresponding to one end of a plurality of first electrode tabs (4041). The lead tab (40411) may be configured to form an electrical path with an electronic component (not shown) outside the case (402). For example, the lead tab (40411) may extend toward the outside of the battery (401) and be electrically connected to an external component (not shown) by the tab portion (404).

[0117] According to one embodiment, the battery (401) may include a second electrode tab (4042). The second electrode tab (4042) may be composed of a negative electrode substrate (e.g., 532a, 532b in FIG. 12b) connected at one end of the negative electrode current collector layer (431) or a negative electrode current collector layer (431). For example, the extended negative electrode current collector layer (431) may constitute the second electrode tab (4042). The second electrode tab (4042) may be electrically connected to another lead tab (not shown) inside the case (402). A plurality of second electrode tabs (4042) may be electrically connected to each other and may be electrically connected and / or welded to a first lead tab (40411) and another lead tab (not shown).

[0118] The first-1 anode substrate (412a) described in the present disclosure may be named as the first anode substrate, the first anode tab, or the first anode tab included in the anode (410).

[0119] The first and second anode substrates (412b) described in the present disclosure may be named as a second anode substrate, a second anode tab, or a second anode tab included in the anode (410).

[0120] The first positive tab (412a) and the second positive tab (412b) described in the present disclosure may constitute the first electrode tab (4041) or the positive electrode (410).

[0121] According to one embodiment, the first anode layer (410) can transfer lithium cation (Li+) particles to the negative electrode layer (430) when current is transferred from the outside to the battery (401) (e.g., during charging). The first anode layer (410) can receive lithium cation (Li+) particles separated from lithium (Li) released from the negative electrode layer (430) when current is transferred from the battery (401) to the outside (e.g., during discharging).

[0122] The first-1 bent portion (e.g., 41221a of FIG. 9) or the first-2 bent portion (41221b) bent in one direction described in the present disclosure may have the meaning of being bent and extended in a certain direction, bent in one direction, or substantially the same.

[0123] The first-1 positive active layer (413a) and the first-2 positive active layer (413b) described in the present disclosure may be substantially identical to the extent that they do not collide.

[0124] The first-1 anode substrate (412a) and the first-2 anode substrate (412b) mentioned in the present disclosure may be substantially identical to the extent that they do not collide.

[0125] According to one embodiment, the battery (401) may include a second-1 positive layer (440a) and a second-2 positive layer (440b). The second-1 positive layer (440a) and the second-2 positive layer (440b) may be spaced apart with a plurality of battery cells (403) between them. The second-1 positive layer (440a) may be placed between a second cover (402b) and a battery cell (403). The second-2 positive layer (440b) may be placed between a first cover (402a) and a battery cell (403).

[0126] According to one embodiment, the battery (401) may include a negative electrode layer (430). The negative electrode layer (430) may be disposed between a plurality of first positive electrode layers (410). The negative electrode layer (430) may be disposed between a plurality of first positive electrode layers (410) and a second-first positive electrode layer (440a). The negative electrode layer (430) may be disposed between a plurality of first positive electrode layers (410) and a second-second positive electrode layer (440b). The battery (401) may include a plurality of negative electrode layers (430). Each of the plurality of negative electrode layers (430) may be disposed alternately between a plurality of first positive electrode layers (410). One and / or some of the plurality of negative electrode layers (430) may be disposed between a second-first positive electrode layer (440a) and a plurality of first positive electrode layers (410). One and / or some of the other of the plurality of cathode layers (430) may be disposed between the second-second anode layer (440b) and the plurality of first anode layers (410). Each of the plurality of cathode layers (430) may be disposed between the plurality of first anode layers (410) with a separator (420) in between. Each of the plurality of cathode layers (430) may be disposed between the second-first anode layer (440a) and the plurality of first anode layers (410) with a separator (420) in between. Each of the plurality of cathode layers (430) may be disposed between the second-second anode layer (440b) and the plurality of first anode layers (410) with a separator (420) in between.

[0127] According to one embodiment, the cathode layer (430) may include a cathode current collector layer (431). The cathode layer (430) may include a first-1 cathode active layer (433a) and a first-2 cathode active layer (433b) spaced apart with the cathode current collector layer (431) in between. The cathode current collector layer (431) may extend from one end or both ends to form part of the second electrode tab (4042). The first-1 cathode active layer (433a) and / or the first-2 cathode active layer (433b) may each come into contact with a separator (420) in a direction away from the cathode current collector layer (431).

[0128] The first-1 cathode active layer (433a) described in the present disclosure may be identical to the first cathode active layer. The first-2 cathode active layer (433b) may be identical to the second cathode active layer.

[0129] According to one embodiment, the battery (401) may include a second electrode tab (4042). The second electrode tab (4042) may be configured such that a negative electrode current collector layer (431) extends in a direction away from the negative electrode layer (430). For example, the negative electrode current collector layer (431) may protrude in a direction away from the negative electrode layer (430), and the protruding negative electrode current collector layer (431) may extend to form the second electrode tab (4042).

[0130] According to one embodiment, the battery (401) may include a separator (420). The battery (401) may include a plurality of separators (420). Each of the plurality of separators (420) may be arranged alternately between a plurality of battery cells (403). Each of the plurality of separators (420) may be arranged between a first positive electrode layer (410) and a negative electrode layer (430). One and / or some of the plurality of separators (420) may be arranged between a second-1 positive electrode layer (440a) and a plurality of battery cells (403). Another one and / or other some of the plurality of separators (420) may be arranged between a second-2 positive electrode layer (440b) and a plurality of battery cells (403).

[0131] The first positive layer (410) described in the present disclosure may constitute a part of the battery cell (403). The first positive layer (410) may be a part of the positive layer of the battery (401) or substantially identical thereto. However, it should be noted that it is not limited thereto.

[0132] The negative electrode layer (430) described in the present disclosure may constitute a part of the battery cell (403). The negative electrode layer (430) may be a part of the negative electrode layer of the battery (401) or substantially identical thereto. However, it should be noted that it is not limited thereto.

[0133] The separator (420) described in the present disclosure may be configured to be disposed in part of a battery cell (403) or between a plurality of battery cells (403). However, it is not limited thereto, and may refer to a configuration disposed alternately between a negative electrode layer (430), a first positive electrode layer (410), a second-first positive electrode layer (440a), and a second-second positive electrode layer (440b).

[0134] FIG. 9a is a conceptual diagram of an enlarged area S4 shown in FIG. 8 according to one embodiment of the present disclosure.

[0135] FIG. 9b is an enlarged conceptual diagram of a positive current collector, which is a part of a battery cell, according to one embodiment of the present disclosure.

[0136] The battery configurations described with reference to FIGS. 9a and 9b may be substantially identical to the configurations described with reference to FIGS. 1 to 8 to the extent that they do not conflict. The battery configurations described with reference to FIGS. 9a and 9b may be substantially identical to the configurations described with reference to FIGS. 10 to 15 to the extent that they do not conflict. The embodiments described with reference to FIGS. 9a and 9b may be combined with the embodiments described with reference to FIGS. 1 to 8 and FIGS. 10 to 15 to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations described with reference to FIGS. 1 to 8 and FIGS. 10 to 15 to the extent that they do not conflict.

[0137] According to one embodiment, a battery (e.g., 401 in FIG. 7) may include a first positive layer (410). The battery (e.g., 401 in FIG. 7) may include a negative layer (e.g., 430 in FIG. 8). The battery (e.g., 401 in FIG. 7) may include a separator (e.g., 420 in FIG. 8). The first positive layer (410), the negative layer (e.g., 430 in FIG. 8), and the separator (e.g., 420 in FIG. 8), which are not described below, may be used within a range that does not conflict with the first positive layer (410), the negative layer (e.g., 430 in FIG. 8), and the separator (e.g., 420 in FIG. 8) described with reference to FIG. 6 through FIG. 8, respectively.

[0138] According to one embodiment, the first anode layer (410) may include a first anode current collector layer (411). The first anode current collector layer (411) may be disposed between a first-1 anode active layer (413a) and a first-2 anode active layer (413b) that are spaced apart from each other. A portion of the first anode current collector layer (411) may be disposed between a first portion (4131a) of the first-1 anode active layer (413a) and a first portion (4131b) of the first-2 anode active layer (413b). The first anode current collector layer (411) may be disposed between a first-1 anode substrate (412a) and a first-2 anode substrate (412b). The first anode current collector layer (411) may include a first surface (411a) facing a first direction (+Z direction).

[0139] According to one embodiment, the first positive current collector layer (411) may be disposed between the first positive active layer (413a) and the first positive active layer (413b) corresponding to the lengths of the first positive active layer (413a) and the first positive active layer (413b). For example, the first positive current collector layer (411) may be disposed to overlap with the first positive active layer (413a) when viewed from the first direction (+Z direction). For example, the first positive current collector layer (411) may be disposed to be completely covered by the first positive active layer (413a) and the first positive active layer (413b) together with a portion of the first positive substrate (412a) and a portion of the first positive substrate (412b). The first positive current collector layer (411) may include a second surface (411b) facing the second direction (-Z direction) opposite to the first direction (+Z direction).

[0140] According to one embodiment, with reference to FIG. 9b, the first positive current collector layer (411) may include a first film layer (4113). The first film layer (4113) may be disposed between the first-1 metal layer (4111) and the first-2 metal layer (4112). The first film layer (4113) may have a length corresponding to the first-1 positive active layer (413a) and the first-2 positive active layer (413b). The first film layer (4113) may include a first-1 film surface (4113a) facing the first direction (+Z direction). The first film layer (4113) may include a first-2 film surface (4113b) facing the second direction (-Z direction). The first-1 film surface (4113a) may be named as one side of the first film layer (4113) or substantially the same. The first film layer (4113) may comprise at least one of the polymer polyethylene (PE), polypropylene (PP), polystyrene (PS), or polyvinyl chloride (PVC). The first-second film surface (4113b) may be named as the other surface of the first film layer (4113) or substantially the same as it.

[0141] According to one embodiment, the first positive current collector layer (411) may include a first-1 metal layer (4111). The first-1 metal layer (4111) may be disposed on a first-1 film surface (4113a). The first-1 metal layer (4111) may include a surface that faces away from the first-1 film surface (4113a) and forms a first surface (411a) of the first positive current collector layer (411). The first-1 metal layer (4111) may form a first surface (411a) of the first positive current collector layer (411). The first-1 metal layer (4111) may include a metal material. The first-1 metal layer (4111) may include at least one of aluminum (Al) and copper (Cu).

[0142] According to one embodiment, the first positive current collector layer (411) may include a first-second metal layer (4112). The first-second metal layer (4112) may be disposed on the first-second film surface (4113b). The first-second metal layer (4112) may include a surface that faces away from the first-second film surface (4113b) and forms the second surface (411b) of the first positive current collector layer (411). The first-second metal layer (4112) may form the second surface (411b) of the first positive current collector layer (411). The first-second metal layer (4112) may include a metal material. The first-second metal layer (4112) may include at least one of aluminum (Al) and copper (Cu).

[0143] The first-1 metal layer (4111) described in the present disclosure may be named the first metal layer. The first-2 metal layer (4112) described in the present disclosure may be named the second metal layer.

[0144] According to one embodiment, the first anode layer (410) may include a first-1 anode substrate (412a). The first-1 anode substrate (412a) may be disposed on a first surface (411a) of the first anode current collector layer (411). The first-1 anode substrate (412a) may be disposed on the edge of the first surface (411a) of the first anode current collector layer (411). For example, the first-1 anode substrate (412a) may be disposed on a first portion (41101a) of the first surface (411a). The first-1 anode substrate (412a) may be disposed between the first-1 anode active layer (413a) and the first anode current collector layer (411). The first-1 anode substrate (412a) may include a metal material.

[0145] According to one embodiment, the first-1 anode substrate (412a) may include a single metal layer. For example, the first anode current collector (411) may be laminated with a first film layer (4113), a first-1 metal layer (4111), and a first-2 metal layer (4112), and the first-1 anode substrate (412a) may be disposed or laminated as a single metal layer on a portion of one side (e.g., the first side (411a)) of the first-1 metal layer (4111). The first-1 anode substrate (412a) may include a single metal layer, but is not limited thereto.

[0146] According to one embodiment, the first-1 anode substrate (412a) can be interpreted as being connected to the first current collector layer (411) of the first anode layer (410) as part of the first electrode tab (e.g., 4041 in FIG. 7).

[0147] According to one embodiment, the first-1 anode substrate (412a) may include a first-1 connecting portion (4121a). The first-1 connecting portion (4121a) may be disposed on a first surface (411a) of the first anode current collector layer (411). The first-1 connecting portion (4121a) may be disposed on a first portion (41101a) of the first surface (411a). The first-1 connecting portion (4121a) may be disposed between a second portion (4132a) of the first-1 anode active layer and the first anode current collector layer (411). The second portion (4132a) of the first-1 anode active layer (e.g., 413a in FIG. 8) may correspond to a first region (e.g., 415a in FIG. 8). The first-1 connection (4121a) can be connected to the first part (41101a) of the first surface (411a) by welding and / or bonding.

[0148] According to one embodiment, the first-1 anode substrate (412a) may include a first-1 extension (4122a). The first-1 extension (4122a) may extend from the first-1 connection (4121a) in a third direction (+Y direction) perpendicular to the first direction (+Z direction). The first-1 extension (4122a) may extend from the first-1 connection (4121a) in a direction away from the first anode current collection layer (411). The first-1 extension (4122a) may extend integrally from the first-1 connection (4121a). The first-1 extension (4122a) may be spaced apart from the first-2 extension (4122b).

[0149] The first-1 extension (4122a) described in the present disclosure may be named as the first extension or the first extension of the first positive tab. The first-1 connection (41121a) may be named as the first connection or the first connection of the first positive tab.

[0150] According to one embodiment, the first-1 anode substrate (412a) may include a first-1 fold portion (41221a). The first-1 fold portion (41221a) may be extended and folded from the first-1 extension portion (4122a). For example, the first-1 fold portion (41221a) may be folded and extended from the first-1 extension portion (4122a) in a direction opposite to the first direction (+Z direction). The first-1 fold portion (41221a) may be folded in a second direction (-Z direction) at a portion corresponding to one end (e.g., 421 in FIG. 8) of the separator (e.g., 420 in FIG. 8). The first-1 fold portion (41221a) may be extended from the first-1 extension portion (4122a) in a third direction (+Y direction) and bent in the Z-axis direction. The first-1 bend (41221a) can be spaced apart from the first-2 bend (41221b).

[0151] The first-1 bend portion (41221a) described in the present disclosure may be named as a first bend portion that is extended and bent from the first bend portion or the first extension portion (4122a).

[0152] According to one embodiment, the first-1 connecting portion (4121a), the first-1 extension portion (4122a), and the first-1 bending portion (41221a) can integrally form the first-1 anode substrate (412a). The first-1 anode substrate (412a) may be fixed to the first anode current collection layer (411) by having the first-1 connecting portion (4121a) positioned between the first-1 anode active layer (413a) and the first anode current collection layer (411).

[0153] According to one embodiment, as the first-1 connecting portion (4121a) is positioned between the first-1 positive active layer (413a) and the first positive current collector layer (411), the space occupied by the first-1 bending portion (41221a) inside the battery case (e.g., 402 in FIG. 6) can be reduced. For example, the length of the bent area of ​​the first-1 positive substrate (412a) can be reduced by the length of the first-1 connecting portion (4121a) positioned between the first-1 positive active layer (413a) and the first positive current collector layer (411).

[0154] According to one embodiment, the first-1 connecting portion (4121a) is positioned between the first-1 positive active layer (413a) and the first positive current collector layer (411), thereby reducing the length of the first-1 positive substrate (412a) protruding from the first positive layer (410) so as to prevent and / or reduce contact with the negative layer (430).

[0155] According to one embodiment, the first anode layer (410) may include a first-second anode substrate (412b). The first-second anode substrate (412b) may be disposed on a second surface (411b) of the first anode current collector layer (411). For example, the first-second anode substrate (412b) may be disposed on a first portion (41101b) of the second surface (411b). The first-second anode substrate (412b) may be disposed between the first-second anode active layer (413b) and the first anode current collector layer (411). The first-second anode substrate (412b) may include a metal material. The first-second anode substrate (412b) may be a single metal structure. The first-2 anode substrate (412b) may utilize part or all of the first-1 anode substrate (412a), except that it is placed on the second surface (411b) of the first anode current collector layer (411).

[0156] According to one embodiment, the first-2 positive substrate (412b) may include a first-2 connecting portion (4121b). The first-2 connecting portion (4121b) may be disposed on the second surface (411b) of the first positive current collector layer (411). The first-2 connecting portion (4121b) may be disposed on the first portion (41101b) of the second surface (411b). The first-2 connecting portion (4121b) may be disposed between the second portion (4132b) of the first-2 positive active layer and the first positive current collector layer (411). The second portion (4132b) of the first-1 positive active layer may correspond to a first region (e.g., the first region (415a) of FIG. 8). The first-second connecting portion (4121b) can be connected to the first anode current collector layer by welding and / or bonding to the first portion (41101b) of the second surface (411b).

[0157] According to one embodiment, the first-2 anode substrate (412b) may include a first-2 extension portion (4122b). The first-2 extension portion (4122b) may extend from the first-2 connection portion (4121b) in a third direction (+Y direction) perpendicular to the first direction (+Z direction). The first-2 extension portion (4122b) may extend from the first-2 connection portion (4121b) in a direction away from the first anode current collection layer (411). The first-2 extension portion (4122b) may extend integrally from the first-2 connection portion (4121b). The first-2 extension portion (4122b) may be spaced apart from the first-1 extension portion (4122a).

[0158] The first-2 extension (4122b) described in the present disclosure may be named as the second extension or the second extension of the second positive tab. The first-2 connection (4121b) may be named as the second connection or the second connection of the second positive tab.

[0159] According to one embodiment, the first-2 anode substrate (412b) may include a first-2 fold portion (41221b). The first-2 fold portion (41221b) may be extended and folded from the first-2 extension portion (4122b). For example, the first-2 fold portion (41221b) may be folded and extended from the first-2 extension portion (4122b) in a direction opposite to the first direction (+Z direction). The first-2 fold portion (41221b) may be folded in the second direction (-Z direction) at a portion corresponding to one end (e.g., 421 in FIG. 8) of the separator (e.g., 420 in FIG. 8). The first-2 fold portion (41221b) may be spaced apart from the first-1 fold portion (41221a).

[0160] The first-second bend (41221b) described in the present disclosure may be named as a second bend that is extended and bent from the second bend or second extension (4122b).

[0161] According to one embodiment, the first-2 connecting portion (4121b), the first-2 extension portion (4122b), and the first-2 bending portion (41221b) can integrally form the first-2 anode substrate (412b). The first-2 anode substrate (412b) may be fixed to the first anode current collection layer (411) by having the first-2 connecting portion (4121b) positioned between the first-2 anode active layer (413b) and the first anode current collection layer (411).

[0162] According to one embodiment, the first-2 connecting portion (4121b) is positioned between the first-2 positive active layer (413b) and the first positive current collector layer (411) to reduce the space occupied by the first-2 bending portion (41221b) inside the battery case (e.g., 402 in FIG. 6). For example, the length of the bent area of ​​the first-2 positive substrate (412b) can be reduced by the length of the first-2 connecting portion (4121b) positioned between the first-2 positive active layer (413b) and the first positive current collector layer (411).

[0163] According to one embodiment, as the first-2 connecting portion (4121b) is positioned between the first-2 positive active layer (413b) and the first positive current collector layer (411), the length of the first-2 positive substrate (412b) exposed outside the first-2 positive active layer (413b) is reduced, and the first-2 positive substrate (412b) may be prevented and / or reduced from contacting the negative layer (430).

[0164] According to one embodiment, one of the first-1 anode substrate (412a) and the first-2 anode substrate (412b) may be connected to the first-1 metal layer (4111), and the other of the first-1 anode substrate (412a) and the first-2 anode substrate (412b) may be connected to the first-2 metal layer (4112).

[0165] According to one embodiment, the first-1 anode substrate (412a) and the first-2 anode substrate (412b) may be connected to each metal layer (e.g., the first-1 metal layer (4111), the first-2 metal layer (4112)) by welding or brazing.

[0166] According to one embodiment, the first hardness of the first current collector (or first region) (415a) comprising the first positive current collector (411) and the first-1 connecting part (4121a) and the first-2 connecting part (4121b) fixed to both sides of the first positive current collector (411) may be greater than the second hardness of the second current collector (or second region) (e.g., 415b of FIG. 8) comprising the first positive current collector (411) without the first-1 connecting part (4121a) and the first-2 connecting part (4121b).

[0167] According to one embodiment, a first-1 fold (41221a) and a first-2 fold (41221b) are bent at a position corresponding to the end (or one end) of the separator (e.g., 421 in FIG. 8) and the same, respectively, the same, may be extended and connected to a lead tab (e.g., the first lead tab (40411) in FIG. 7). Accordingly, power can be supplied to an electronic component (not shown) outside the case (e.g., 402 in FIG. 7). For example, the first-1 bend (41221a) and the first-2 bend (41221b) are extended to form part of the first electrode tab (e.g., 4041 in FIG. 7), and the first lead tab (e.g., 40411 in FIG. 7) connected to the first electrode tab (e.g., 4041 in FIG. 7) may be configured to be electrically connected to an electronic component (not shown) externally to transfer energy.

[0168] According to one embodiment, the first anode layer (410) may include a first-1 anode active layer (413a). The first-1 anode active layer (413a) may be applied to a first surface (411a) of the first anode current collector layer (411). The first-1 anode active layer (413a) may be applied to a first-1 metal layer (4111). The first-1 anode active layer (413a) may be applied to a part of the first-1 anode substrate (412a). The first-1 anode active layer (413a) may be applied to a first-1 connection portion (4121a). The first-1 anode active layer (413a) may include a first-1 anode active portion (4131a) and a first-2 anode active portion (4132a). The first-2 positive active portion (4132a) may extend from the first-1 positive active portion (4131a) in a third direction (+Y direction). The first-1 positive active portion (4131a) may be applied or placed on a second region of the first positive layer (e.g., 415b in FIG. 8). The first-1 positive active portion (4131a) may be applied to a first surface (411a) of the second region (e.g., 415b in FIG. 8). The first-2 positive active portion (4132a) may be applied to a first region of the first positive layer (e.g., 415a in FIG. 8) or to a first surface (411a) of the first region (e.g., 415a in FIG. 8).

[0169] According to one embodiment, the first-2 positive active portion (4132a) may be applied to the first-1 connection portion (4121a). The first-1 positive active layer (413a) may be applied so that the first-2 positive active portion (4132a) covers the first-1 connection portion (4121a). For example, a portion of the first-1 positive active layer (413a) may be applied so that it covers the first-1 connection portion (4121a) to protect the connection portion (e.g., the first-1 connection portion (4121a)) between the first-1 positive substrate (412a) and the first positive current collector layer (411). The first-1 positive active layer (413a) may be applied so that the first-2 positive active portion (4132a) covers the first-1 connection portion (4121a) to protect the first-1 positive substrate (412a). The battery capacity can be additionally secured by the length in which the first-1 positive active layer (413a) overlaps with the first-1 connection part (4121a). For example, the energy density of the battery can be increased by extending the length of the first-1 positive active layer (413a).

[0170] According to one embodiment, the first anode layer (410) may include a first-second anode active layer (413b). The first-second anode active layer (413b) may be applied or disposed on a second surface (411b) of the first anode current collector layer (411). The first-second anode active layer (413b) may be applied to a first-second metal layer (4112). The first-second anode active layer (413b) may be applied to a part of the first-second anode substrate (412b). The first-second anode active layer (413b) may be applied to a first-second connection part (4121b). The first-second anode active layer (413b) may include a second-first anode active portion (4131b) and a second-second anode active portion (4132b). The second-2 positive active portion (4132b) may extend from the second-1 positive active portion (4131b) in a third direction (+Y direction). The second-1 positive active portion (4131b) may be applied to a second region of the first positive layer (e.g., 415b in FIG. 8). The second-1 positive active portion (4132b) may be applied to a second surface (411b) of the second region (e.g., 415b in FIG. 8). The second-2 positive active portion (4132b) may be applied to a first region of the first positive layer (e.g., 415a in FIG. 8) or to a second surface (411b) of the first region (e.g., 415a in FIG. 8).

[0171] According to one embodiment, the second-2 positive active portion (4132b) may be applied or disposed on the first-2 connecting portion (4121b). The first-2 positive active layer (413b) may be applied so that the second-2 positive active portion (4132b) covers the first-2 connecting portion (4121b). For example, as a portion of the first-2 positive active layer (413b) is applied to cover the first-2 connecting portion (4121b), the first-2 positive active layer (413b) may protect the connection portion between the first-2 positive substrate (412b) and the first positive current collector layer (411). Alternatively, the first-2 positive active layer (413b) may protect the first-2 positive substrate (412b).

[0172] According to one embodiment, the second-2 positive active portion (4132b) may be applied to cover the first-2 connecting portion (4121b). Accordingly, the first-2 positive active layer can secure additional battery capacity by the length overlapping the second-2 positive active portion (4132b) with the first-2 connecting portion (4121b). For example, the length of the first-2 positive active layer (413b) may be increased, thereby increasing the energy density of the battery.

[0173] According to one embodiment, a first-1 positive active layer (413a) may be disposed between the first-1 connecting part (4121a) and the negative layer (430) such that the first-1 connecting part (4121a) and the negative layer (430) are spaced apart from each other. A first-2 positive active layer (413b) may be disposed between the first-2 connecting part (4121b) and the negative layer (430) such that the first-2 connecting part (4121b) and the negative layer (430) are spaced apart from each other.

[0174] The first-second positive active layer (413b) described in the present disclosure may utilize part or all of the first-first positive active layer (413a), except that it is applied or disposed on the second surface (411b) of the first positive current collector layer (411).

[0175] FIG. 10 is a conceptual diagram of an enlarged area S3 shown in FIG. 7 according to one embodiment of the present disclosure.

[0176] The battery configurations described with reference to FIG. 10 may be substantially identical to the configurations described with reference to FIG. 1 through 9 to the extent that they do not conflict. The battery configurations described with reference to FIG. 10 may be substantially identical to the configurations described with reference to FIG. 11a through 15 to the extent that they do not conflict. The embodiments described with reference to FIG. 10 may be combined with the embodiments described with reference to FIG. 1 through 9b and FIG. 11a through 15 to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations described with reference to FIG. 1 through 9b and FIG. 11a through 15 to the extent that they do not conflict.

[0177] According to one embodiment, the battery (e.g., 401 in FIG. 7) may include a second-1 positive layer (440a). The battery (e.g., 401 in FIG. 7) may include a second-2 positive layer (e.g., 440b in FIG. 7). The second-1 positive layer (440a) may be disposed between a second cover (402b) and a plurality of battery cells (e.g., 403 in FIG. 7). The second-2 positive layer (e.g., 440b in FIG. 7) may be disposed between a first cover (e.g., 402a in FIG. 7) and a plurality of battery cells (e.g., 403 in FIG. 7).

[0178] The second-1 anode layer (440a) described in the present disclosure may be named the second-1 anode. The second-2 anode layer described in the present disclosure (e.g., 440b of FIG. 7) may be named the second-2 anode.

[0179] The second-1 anode layer (440a) described with reference to FIG. 10 may be substantially the same as the second-1 anode layer (440a) of FIG. 7.

[0180] The second-2 anode layer (e.g., 440b in FIG. 7) described in this disclosure may be adapted to the second-1 anode layer (440a) described with reference to FIG. 6 through 9b without conflict. The second-1 anode layer (440a) and the second-2 anode layer (e.g., 440b in FIG. 7) described in this disclosure may constitute a part of the second anode layer (440a, 440b). Alternatively, the second-1 anode layer (440a) and the second-2 anode layer (e.g., 440b in FIG. 7) may refer to the second anode layer (440a, 440b) disposed at the outermost edge of a plurality of battery cells (e.g., 403 in FIG. 7).

[0181] According to one embodiment, each of the second anode layers (440a, 440b) described in the present disclosure may include a part of the first anode layer (e.g., 410 in FIG. 9a). For example, the second anode layer (440a, 440b) may have a structure in which one anode active layer (e.g., a third anode active layer (443)), an anode current collector (e.g., a second anode current collector (441)), and one anode substrate (e.g., a third anode substrate (442)) are arranged in the same manner as a part of the first anode layer (410).

[0182] According to one embodiment, the second-1 positive layer (440a) may include a second-1 positive current collector layer (441). The second-1 positive current collector layer (441) may be disposed between the third positive active layer (443) and the second cover (402b). The second-1 positive current collector layer (441) may be disposed between the third positive active layer (443) and the second cover (402b) and spaced apart from the second cover (402b). The second-1 positive current collector layer (441) may include a third surface (4411) facing a plurality of battery cells (e.g., 403 in FIG. 7). The second-1 positive current collector layer (441) may be in contact with the third positive active layer (443) on the third surface (4411).

[0183] The second-1 positive current collector (441) described in the present disclosure may be named the outermost positive current collector or the second positive current collector.

[0184] According to one embodiment, the second-1 anode layer (440a) may include a third anode substrate (442). The third anode substrate (442) may be disposed in a portion of the second anode current collector layer (441). A portion of the third anode substrate (442) may be disposed between the second anode current collector layer (441) and the third anode active layer (443). The third anode substrate (442) of the second-1 anode layer (440a) described with reference to FIG. 10 may be substantially identical to the first-1 anode substrate (e.g., 412a of FIG. 9a) and / or the first-2 anode substrate (e.g., 412b of FIG. 9a) described with reference to FIG. 6 through 9b, to the extent that it does not conflict with them.

[0185] According to one embodiment, a third anode substrate (442) constituting part of the first electrode tab (441) can be interpreted as being connected to the second-1 anode layer (440a) (or the second-2 anode layer (440b)).

[0186] The third anode material (442) described in the present disclosure may be named the outermost anode tab.

[0187] According to one embodiment, the third anode substrate (442) may include a third connecting portion (4421). The third connecting portion (4421) may be connected to the second anode current collector (441) at one end of the second anode current collector (441). For example, the third connecting portion (4421) may be connected to the second anode current collector (441) by welding at one end of the second anode current collector (441). The third connecting portion (4421) of the second-1 anode layer (440a) described with reference to FIG. 10 may be substantially identical to the first-1 connecting portion (e.g., 4121a of FIG. 9a) and / or the first-2 connecting portion (e.g., 4121b of FIG. 9a) described with reference to FIG. 6 through 9b, to the extent that it does not conflict with them.

[0188] The third connection part (4421) described in the present disclosure may be named as the outermost connection part or the connection part of the outermost positive tab.

[0189] According to one embodiment, the third positive substrate (442) may include a third extension (4422) extending from the third connection (4421). The third extension (4422) may extend from the third connection (4421) in a direction away from the second positive current collector layer (441). The third extension (4422) may be bent in one direction to form part of the first electrode tab (e.g., 4041 in FIG. 7) of a battery (e.g., 401 in FIG. 7). For example, it may be bent along a bent portion (e.g., the first-1 bent portion (41221a) in FIG. 9a) that extends from one end of a plurality of first positive layers (e.g., 410 in FIG. 7). The third extension (4422) of the second-1 anode layer (440a) described with reference to FIG. 10 may be substantially identical to the first-1 extension (e.g., 4122a of FIG. 9a) and / or the first-2 extension (e.g., 4122b of FIG. 9a) described with reference to FIG. 6 through 9b, to the extent that it does not conflict with them. The third extension (4422) of the second-1 anode layer (440a) described with reference to FIG. 10 may include the first-1 bend (e.g., 41221a of FIG. 9a) and / or the first-2 bend (e.g., 41221b of FIG. 9a) described with reference to FIG. 6 through 9b, to the extent that it does not conflict with them.

[0190] According to one embodiment, the second-1 positive layer (440a) may include a third positive active layer (443). The third positive active layer (443) may be disposed between a plurality of battery cells (e.g., 403 in FIG. 8) and the second positive current collector layer (441). The third positive active layer (443) may be applied such that a portion covers the third positive substrate (442). A portion of the third positive active layer (443) may be applied or disposed on the third surface (4411), and may extend from the portion applied on the third surface (4411) to cover the third positive substrate (442). The third anode active layer (443) of the second-1 anode layer (440a) described with reference to FIG. 10 may utilize the first-1 anode active layer (e.g., 413a of FIG. 9a) and / or the first-2 anode active layer (e.g., 413b of FIG. 9a) described with reference to FIG. 6 to 9b, within a range that does not conflict.

[0191] FIG. 11a is an enlarged conceptual diagram of a negative electrode layer, which is a part of a battery cell, according to one embodiment of the present disclosure.

[0192] FIG. 11b is an enlarged conceptual diagram of a negative current collector layer of a negative electrode layer, which is a part of a battery cell, according to one embodiment of the present disclosure.

[0193] The battery configurations described with reference to FIGS. 11a and 11b may be substantially identical to the configurations described with reference to FIGS. 1 through 10 to the extent that they do not conflict. The battery configurations described with reference to FIGS. 11a and 11b may be substantially identical to the configurations described with reference to FIGS. 12 through 15 to the extent that they do not conflict. The embodiments described with reference to FIGS. 11a and 11b may be combined with the embodiments described with reference to FIGS. 1 through 10 and FIGS. 12 through 15 to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations described with reference to FIGS. 1 through 10 and FIGS. 12 through 15 to the extent that they do not conflict.

[0194] According to one embodiment, a battery (e.g., 401 in FIG. 7) may include a negative electrode layer (530). A battery (e.g., 401 in FIG. 7) may include a plurality of negative electrode layers (530). Each of the plurality of negative electrode layers (530) may be stacked alternately between a plurality of first positive electrode layers (e.g., 410 in FIG. 7). When an external current is applied to the battery (401) of an electronic device (e.g., during charging), the negative electrode layer (530) may receive lithium (Li) cation particles transferred from the positive electrode layer (e.g., the first positive electrode layer (410)) and electrons transferred from the outside through wiring. When current is transferred from the battery (401) of an electronic device to the outside (e.g., during discharging), electrons separated from the lithium (Li) released from the negative electrode layer (530) may be transferred to the outside through wiring.

[0195] The negative electrode layer (530) of the present disclosure may be named a negative electrode. Or it may be named a negative electrode of a battery cell.

[0196] According to one embodiment, the cathode layer (530) may include a first cathode current collector layer (531). According to one embodiment, each of the plurality of cathode layers (530) may include a first cathode current collector layer (531). The first cathode current collector layer (531) may be disposed between a first-1 cathode active layer (533a) and a first-2 cathode active layer (533b) that are spaced apart from each other. A portion of the first cathode current collector layer (531) may be disposed between a first portion (5331a) of the first-1 cathode active layer (533a) and a first portion (5331b) of the first-2 cathode active layer (533b). The first cathode current collector layer (531) may be disposed between a first-1 cathode substrate (532a) and a first-2 cathode substrate (532b). The first cathode current collector layer (531) may include a first surface (531a) facing the first direction (+Z direction). The first cathode current collector layer (531) may be positioned between the first-1 cathode active layer (533a) and the first-2 cathode active layer (533b) to correspond to the lengths of the first-1 cathode active layer (533a) and the first-2 cathode active layer (533b). For example, the first cathode current collector layer (531) may be positioned to overlap with the first-1 cathode active layer (533a) when viewed from the first direction (+Z direction). For example, the first cathode current collector layer (531) may be arranged such that at least a portion is covered by the first-1 cathode active layer (533a) and the first-2 cathode active layer (533b) together with a portion of the first-1 cathode substrate (532a) and a portion of the first-2 cathode substrate (532b). The first cathode current collector layer (531) may include a second surface (531b) facing the second direction (-Z direction) opposite to the first direction (+Z direction).

[0197] The first cathode current collector layer (531) of the present disclosure may be named a cathode current collector (531) or a cathode current collector (531) of a cathode (530).

[0198] According to one embodiment, the first cathode current collector layer (531) may include a second film layer (5313). The second film layer (5313) may be disposed between the first-1 cathode metal layer (5311) and the first-2 cathode metal layer (5312). The second film layer (5313) may have a length corresponding to the first-1 cathode active layer (533a) and the first-2 cathode active layer (533b). The second film layer (5313) may include a first-1 cathode film surface (5313a) facing the first direction (+Z direction). The second film layer (5313) may include a first-2 cathode film surface (5313b) facing the second direction (-Z direction). The first-1 cathode film surface (5313a) may be named as one side of the second film layer (5313) or substantially the same. The first-second cathode film surface (5313b) may be named as the other side of the second film layer (5313) or substantially the same as it.

[0199] According to one embodiment, the second film layer (5313) may include a polymer. The second film layer (5313) may include at least one of polyethylene (PE), polypropylene (PP), polystyrene (PS), or polyvinyl chloride (PVC).

[0200] According to one embodiment, the first cathode current collector layer (531) may include a first-1 cathode metal layer (5311). The first-1 cathode metal layer (5311) may be disposed on the first-1 cathode film surface (5313a). The first-1 cathode metal layer (5311) may include a surface that faces away from the first-1 cathode film surface (5313a) and forms the first surface (531a) of the first cathode current collector layer (531). The first-1 cathode metal layer (5311) may form the first surface (531a) of the first cathode current collector layer (531). The first-1 cathode metal layer (5311) may include a metal material. The first-1 cathode metal layer (5311) may include at least one of aluminum (Al) and copper (Cu).

[0201] According to one embodiment, the first cathode current collector layer (531) may include a first-second cathode metal layer (5312). The first-second cathode metal layer (5312) may be disposed on the first-second cathode film surface (5313b). The first-second cathode metal layer (5312) may include a surface that faces away from the first-second cathode film surface (5313b) and forms a second surface (531b) of the first cathode current collector layer (531). The first-second cathode metal layer (5312) may form the second surface (531b) of the first cathode current collector layer (531). The first-second cathode metal layer (5312) may include a metal material. The first-second cathode metal layer (5312) may include copper (Cu).

[0202] The first-1 cathode metal layer (5311) described in the present disclosure may be named the first cathode metal layer. The first-2 cathode metal layer (5312) described in the present disclosure may be named the second cathode metal layer.

[0203] According to one embodiment, the cathode layer (530) may include a first-1 cathode substrate (532a). The first-1 cathode substrate (532a) may be disposed on a first surface (531a) of the first cathode current collector layer (531). The first-1 cathode substrate (532a) may be disposed between the first-1 cathode active layer (533a) and the first cathode current collector layer (531). The first-1 cathode substrate (532a) may include a metal material. The first-1 cathode substrate (532a) may include a single metal layer. For example, the first-1 cathode substrate (532a) is a single metal layer, and a portion of the first-1 cathode substrate (532a) may be laminated on the first cathode current collector layer (531) in which the second film layer (5313), the first-1 cathode metal layer (5311), and the first-2 cathode metal layer (5312) are laminated.

[0204] According to one embodiment, the first-1 cathode substrate (532a) can be interpreted as being connected to the cathode layer (530) as part of the second electrode tab (e.g., 4042 in FIG. 7).

[0205] According to one embodiment, the first-1 cathode substrate (532a) may include a first-1 cathode connection portion (5321a). The first-1 cathode connection portion (5321a) may be disposed on a first surface (531a) of the first cathode current collector layer (531). The first-1 cathode connection portion (5321a) may be disposed between a second portion (5332a) of the first-1 cathode active layer (533a) and the first cathode current collector layer (531). The first-1 cathode connection portion (5321a) may be connected to the first surface (531a) by welding and / or bonding.

[0206] According to one embodiment, the first-1 cathode substrate (532a) may include a first-1 cathode extension (5322a). The first-1 cathode extension (5322a) may extend from the first-1 cathode connection (5321a) in a third direction (+Y direction) perpendicular to the first direction (+Z direction). The first-1 cathode extension (5322a) may extend from the first-1 cathode connection (5321a) in a direction away from the first cathode current collector layer (531). The first-1 cathode extension (5322a) may extend integrally from the first-1 cathode connection (5321a). The first-1 cathode extension (5322a) may be spaced apart from the first-2 cathode extension (5322b).

[0207] According to one embodiment, the first-1 cathode substrate (532a) may include a first-1 cathode fold portion (53221a). The first-1 cathode fold portion (53221a) may be extended and folded from the first-1 cathode extension portion (5322a). For example, the first-1 cathode fold portion (53221a) may be folded and extended from the first-1 cathode extension portion (5322a) in a direction opposite to the first direction (+Z direction). The first-1 cathode fold portion (53221a) may be folded in a second direction (-Z direction) at a portion corresponding to one end (e.g., 421 in FIG. 7) of a separator (e.g., 420 in FIG. 7). The first-1 cathode bend (53221a) extends from the first-1 cathode extension (5322a) in a third direction (+Y direction) and can be bent in a second direction (-Z direction). The first-1 cathode bend (53221a) can be spaced apart from the first-2 cathode bend (53221b).

[0208] According to one embodiment, the first-1 cathode connection portion (5321a), the first-1 cathode extension portion (5322a), and the first-1 cathode bend portion (53221a) can integrally form the first-1 cathode substrate (532a). The first-1 cathode substrate (532a) can be fixed to the first cathode current collection layer (531) by having the first-1 cathode connection portion (5321a) positioned between the first-1 cathode active layer (533a) and the first cathode current collection layer (531).

[0209] According to one embodiment, as the first-1 cathode connection portion (5321a) is positioned between the first-1 cathode active layer (533a) and the first cathode current collector layer (531), the space in which the first-1 cathode bend portion (53221a) is bent may be reduced. For example, the length of the bent area of ​​the first-1 cathode substrate (532a) may be reduced by the length in which the first-1 cathode connection portion (5321a) is positioned between the first-1 cathode active layer (533a) and the first cathode current collector layer (531).

[0210] According to one embodiment, the first-1 cathode connection portion (5321a) is positioned between the first-1 cathode active layer (533a) and the first cathode current collector layer (531), so that the length of the first-1 cathode substrate (532a) protruding from the first-1 cathode active layer (533a) is reduced, thereby preventing and / or reducing contact between the first-1 cathode substrate (532a) and the anode layer (e.g., the first anode layer (410) of FIG. 8).

[0211] According to one embodiment, the cathode layer (530) may include a first-second cathode substrate (532b). According to one embodiment, the first-second cathode substrate (532b) may include a first-second cathode connection portion (5321b). According to one embodiment, the first-second cathode substrate (532b) may include a first-second cathode extension portion (5322b). According to one embodiment, the first-second cathode substrate (532b) may include a first-second cathode fold portion (53221b).

[0212] The first-2 cathode substrate (532b), the first-2 cathode connection part (5321b), the first-2 cathode extension part (5322b), and the first-2 cathode bending part (53221b), described with reference to FIGS. 11a and 11b, may be used within a range that does not collide with the first-1 cathode substrate (532a), the first-1 cathode connection part (5321a), the first-1 cathode extension part (5322a), and the first-1 cathode bending part (53221a), respectively, except that they are arranged in the direction of the second surface (531b) of the first cathode current collector layer (531).

[0213] The first-1 cathode material (532a) of the present disclosure may be named as a first cathode tab or a first cathode tab of the cathode (530). The first-2 cathode material (532b) of the present disclosure may be named as a second cathode tab or a second cathode tab of the cathode (530).

[0214] The first-1 cathode connection portion (5321) of the present disclosure may be named as a connection portion of the first cathode tab. In the present disclosure, the first-1 cathode extension portion (5322a) may be named as a first cathode extension portion or a first cathode extension portion of the first cathode tab.

[0215] In the present disclosure, the first-second cathode connection portion (5321b) may be named as the connection portion of the second cathode tab. In the present disclosure, the first-second cathode extension portion (5322b) may be named as the second cathode extension portion or the second cathode extension portion of the second cathode tab.

[0216] According to one embodiment, the cathode layer (530) may include a first-1 cathode active layer (533a). The first-1 cathode active layer (533a) may be applied or disposed on a first surface (531a) of the first cathode current collector layer (531). The first-1 cathode active layer (533a) may be applied to the first-1 cathode metal layer (5311). The first-1 cathode active layer (533a) may be applied to a part of the first-1 cathode substrate (532a). The first-1 cathode active layer (533a) may be applied to the first-1 cathode connection part (5321a). The first-1 cathode active layer (533a) may include a first-1 cathode active portion (5331a) and a first-2 cathode active portion (5332a). The first-2 cathode active portion (5332a) can be extended from the first-1 cathode active portion (5331a) in a third direction (+Y direction).

[0217] According to one embodiment, the first-2 cathode active portion (5332a) may be applied or disposed on the first-1 cathode connection portion (5321a). The first-1 cathode active layer (533a) may be applied so that the first-2 anode active portion (4131b) covers the first-1 cathode connection portion (5321a). For example, a portion of the first-1 cathode active layer (533a) may be applied so as to cover the first-1 cathode connection portion (5321a), so that the first-1 cathode active layer (533a) can protect the connection portion (e.g., the first-1 cathode connection portion (5321a)) between the first-1 cathode substrate (532a) and the first cathode current collector layer (531). The first-1 cathode active layer (533a) is applied so that the first-2 cathode active portion (5332a) covers the first-1 cathode connection portion (5321a), thereby protecting the first-1 cathode substrate (532a).

[0218] According to one embodiment, as the first-2 negative electrode active portion (5332a) is applied to cover the first-1 negative electrode connection portion (5321a), the battery capacity can be secured by the length overlapping the first-2 negative electrode active portion (5332a) with the first-1 negative electrode connection portion (5321a). For example, the length of the first-1 negative electrode active layer (533a) can be increased, thereby increasing the energy density of the battery.

[0219] According to one embodiment, the cathode layer (530) may include a first-second cathode active layer (533b). The first-second cathode active layer (533b) may be applied or placed on the other side (531b) of the first cathode current collector layer (531) and the first-second cathode connection portion (5321b). The description of the first-second cathode active layer (533b) that has not been described below may be adapted to the extent that it does not collide with the first-first cathode active layer (533a), except that it is placed in the direction of the second side (531b) of the first cathode current collector layer (531).

[0220] FIG. 12 is a perspective view conceptually showing cross-section A-A' of the battery shown in FIG. 6 according to one embodiment.

[0221] The battery configurations described with reference to FIG. 12 may be substantially identical to the configurations described with reference to FIG. 1 to FIG. 11b to the extent that they do not conflict with the configurations described with reference to FIG. 12. The embodiments described with reference to FIG. 12 may be combined to the extent that they do not conflict with the embodiments described with reference to FIG. 1 to FIG. 11b. Configurations not described below may be substantially identical to the configurations described with reference to FIG. 1 to FIG. 11b to the extent that they do not conflict with the configurations described with reference to FIG. 1.

[0222] According to one embodiment, the battery (601) may include a case (602). The case (602) may include a first cover (602a), a second cover (602b) opposite to the first cover, and a third cover (602c) surrounding the space between the first cover (602) and the second cover (602b). The case (602) may include a first tab portion (604a) and a second tab portion (604b). The configurations for the case (602) described with reference to FIG. 12 may be adapted to the case described with reference to FIG. 6 through 8 (e.g., the case (402) of FIG. 7) to the extent that they do not conflict.

[0223] According to one embodiment, the battery (601) may include a battery cell (603). The battery (601) may include a plurality of battery cells (603). Each of the plurality of battery cells (603) may include a first positive electrode layer (610), a separator (620), and a negative electrode layer (630). The configurations of the battery cell (603) described with reference to FIG. 12 may be adapted to the battery cell (e.g., the battery cell (403) of FIG. 7) described with reference to FIG. 6 through FIG. 8, to the extent that they do not conflict.

[0224] According to one embodiment, the battery (601) may include a first positive electrode layer (610). The battery (601) may include a negative electrode layer (630). The battery (601) may include a separator (620). The battery (601) may include a second positive electrode layer (640a, 640b). The second positive electrode layer (640a, 640b) may include a second-1 positive electrode layer (640a) and a second-2 positive electrode layer (640b). The first anode layer (610), cathode layer (630), separator (620), and second anode layer (640a, 440b) described with reference to FIG. 12 may be used in a range that does not conflict with the first anode layer (e.g., 410 in FIG. 7), cathode layer (e.g., 430 in FIG. 7), separator (e.g., 420 in FIG. 7), and second anode layer (e.g., 440a, 440b in FIG. 7) described with reference to FIG. 6 to FIG. 8, respectively.

[0225] According to one embodiment, the battery (601) may include a first electrode tab (6041). The first electrode tab (6041) may include a plurality of first electrode tabs (6041). The first electrode tab (6041) may be composed of a first-1 positive electrode substrate (612a), a first-2 positive electrode substrate (612b), and / or a third positive electrode substrate (642). For example, one of the plurality of first electrode tabs (6041) may be composed of the first-1 positive electrode substrate (612a). The plurality of first electrode tabs (6041) may overlap and be electrically connected to each other.

[0226] According to one embodiment, the battery (601) may include a first lead tab (60411). The first lead tab (60411) may be disposed inside a case (602). The first lead tab (60411) may be electrically connected to a first electrode tab (6041) inside the case (602). The first lead tab (60411) may be electrically connected to first-1 electrode extensions (e.g., 4122a in FIG. 9a) and / or first-2 electrode extensions (e.g., 4122b in FIG. 9a) of the first electrode tab (6041). For example, a plurality of first electrode tabs (6041) may overlap and / or be electrically connected in the Z-axis direction, and the first lead tab (60411) may be bonded and / or welded in an area (S5) corresponding to one end of the plurality of first electrode tabs (6041). The first lead tab (60411) may be configured to form an electrical path with an electronic component (not shown) outside the case (602). For example, the first lead tab (60411) may extend toward the outside of the battery (601) and be electrically connected to an external component (not shown) by the first supply unit (604a).

[0227] According to one embodiment, the battery (601) may include a second electrode tab (6042) positioned in a direction opposite to (-Y direction) the direction (+Y direction) in which the first electrode tab (6041) is positioned. The second electrode tab (6042) may include a negative electrode substrate (632a, 632b) connected at one end of the negative electrode current collector (631). For example, a first negative electrode extension (e.g., 5322a in FIG. 11a) may extend from the negative electrode substrate (632a, 632b) connected to the negative electrode current collector (631) to form the second electrode tab (6042).

[0228] According to one embodiment, the second electrode tab (6042) may be electrically connected to the second lead tab (60421) inside the case (602). The negative extensions of the second electrode tab (6042) (e.g., 5322a, 5322b in FIG. 11a) may be electrically connected to the second lead tab (60421). For example, a plurality of second electrode tabs (6042) (or negative extensions (e.g., 5322a, 5322b in FIG. 11a)) may overlap and / or be electrically connected in the Z-axis direction, and the second lead tab (60421) may be bonded and / or welded in an area (S5') corresponding to one end of the plurality of second electrode tabs (6042). The second lead tab (60421) may be configured to form an electrical path with an electronic component (not shown) outside the case (602). The cathode substrate (632a, 632b) described with reference to FIG. 12 may be used in a range that does not collide with the aforementioned second anode substrate (e.g., 532a, 532b of FIG. 11a), except for the direction in which it is arranged.

[0229] The arrangement direction of the second lead tab (6042) and the negative electrode substrate (632a, 632b) described with reference to FIG. 12 is not limited thereto, and may be electrically connected to an external component (not shown) through the second tab portion (604b) which is spaced apart from the first tab portion (604a) so as not to overlap with the first lead tab (6041) and the positive electrode substrate (612a, 612b) or to face in a different direction (e.g., +Y-axis direction).

[0230] The following configurations not described may be adapted to the extent that they do not conflict with the configurations of the battery (e.g., 601a of FIG. 13) described with reference to FIG. 6 to FIG. 11b.

[0231] FIG. 13 is a drawing illustrating a method for manufacturing a battery according to one embodiment of the present disclosure.

[0232] FIG. 14 is a drawing illustrating a method for manufacturing a battery according to one embodiment of the present disclosure.

[0233] FIG. 15 is a drawing illustrating a method for manufacturing a battery according to one embodiment of the present disclosure.

[0234] The battery configurations described with reference to FIGS. 13 to 15 may be substantially identical to the configurations described with reference to FIGS. 1 to 12 to the extent that they do not conflict. The embodiments described with reference to FIGS. 13 to 15 may be combined to the extent that they do not conflict with the embodiments described with reference to FIGS. 1 to 12. Configurations not described below may be substantially identical to the configurations described with reference to FIGS. 1 to 12 to the extent that they do not conflict.

[0235] According to one embodiment, a method for manufacturing a battery of an electronic device (700) may include an operation (701) of providing a first positive current collector layer (e.g., 411 in FIGS. 6 to 15). The method for manufacturing a battery (700) may include an operation (710) of providing a first positive current collector layer (e.g., 4111 and 4112 in FIGS. 6 to 12) comprising a film layer (e.g., 4113 in FIGS. 6 to 12) between two metal layers (e.g., 4111 and 4112 in FIGS. 6 to 15).

[0236] According to one embodiment, a method (700) for manufacturing a battery of an electronic device may include a coupling operation (720) of a positive electrode substrate (e.g., 412 in FIGS. 6 to 12) and a first positive electrode current collector layer (e.g., 411 in FIGS. 6 to 12). A battery manufacturing method (700) may include a joining operation (720) of connecting a portion of another single positive substrate (e.g., 412 in FIGS. 6 to 12) to one end of a positive current collector layer (e.g., 411 in FIGS. 6 to 12). The joining operation (720) of the positive substrate (e.g., 412 in FIGS. 6 to 12) and the first positive current collector layer (e.g., 411 in FIGS. 6 to 12) may include an operation (821) of overlapping respective portions of the positive substrate (e.g., 412 in FIGS. 6 to 12) and the first positive current collector layer (e.g., 411 in FIGS. 6 to 12), and an operation (822) of joining by welding at the portion where the respective portions of the positive substrate and the first positive current collector layer overlap. According to one embodiment, a battery manufacturing method (700) of an electronic device may include a first positive active layer (e.g., FIGS. 6 to 12 It may include a coating operation (730) for applying (413). It may include a coating operation (730) for applying a first positive active layer (e.g., 413 in FIGS. 6 to 12) to a first positive current collector layer (e.g., 411 in FIGS. 6 to 12) and a positive substrate (e.g., 412a in FIGS. 6 to 12). The coating operation (730) of the first positive active layer (e.g., 413a in FIGS. 6 to 12) may include a coating operation such that a portion of the positive substrate (e.g., 412a in FIGS. 6 to 12) coupled to the first positive current collector layer (e.g., 411 in FIGS. 6 to 12) is disposed between the first positive active layer (e.g., 413 in FIGS. 6 to 12) and the first positive current collector layer (e.g., 411 in FIGS. 6 to 12).

[0237] According to one embodiment, a method for manufacturing a battery of an electronic device (700) may include a battery cell coupling operation (740). The battery manufacturing method (700) may include a battery cell (e.g., 403 in FIGS. 6 to 12) coupling operation (740) in which a first positive electrode active layer (e.g., 413a in FIGS. 6 to 12) is coated on a first positive electrode current collector (e.g., 411 in FIGS. 6 to 12) and a positive electrode substrate (e.g., 412 in FIGS. 6 to 12), and a separator (e.g., 420 in FIGS. 6 to 15) and a negative electrode layer (e.g., 430 in FIGS. 6 to 12) are stacked. The battery cell coupling operation (740) may be an operation (901) of stacking multiple battery cells. The operation (901) of stacking multiple battery cells may include an operation (902) of coupling the stacked battery cells. The operation of stacking multiple battery cells (901) may include the operation of bending another part of the second positive current collector layer of the stacked multiple battery cells (903).

[0238] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) may have a single substrate (or positive substrate) connected to a composite substrate to form an electrode tab.

[0239] A battery according to one embodiment of the present disclosure (e.g., 401 of FIGS. 1 to 15) may have a single substrate (or positive substrate) covered with a positive active layer to be protected from external damage.

[0240] A battery according to one embodiment of the present disclosure (e.g., 401 of FIGS. 1 to 15) can secure the capacity of the battery by covering a single substrate (or positive substrate) with a positive active layer.

[0241] A battery according to one embodiment of the present disclosure (e.g., 401 of FIGS. 1 to 15) may prevent and / or reduce contact with another layer (e.g., negative electrode) when the electrode tab is folded, by covering a single substrate (or positive substrate) with a positive active layer.

[0242] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) can prevent and / or reduce damage to the battery by preventing and / or reducing contact with another layer (e.g., negative electrode) when the electrode tab is bent.

[0243] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) can prevent damage when bending the electrode tab and secure additional battery capacity by covering another single substrate (or positive substrate) as a positive active layer on the other end of a composite substrate constituting a current collector.

[0244] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) can reduce the folded area of ​​a single substrate (or positive substrate) that forms an electrode tab by covering the single substrate with a positive active layer.

[0245] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0246] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) may include a case (e.g., 402 in FIGS. 1 to 15) forming the exterior of the battery.

[0247] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) may include at least one battery cell (e.g., 403 in FIGS. 1 to 15) disposed inside the case and comprising a first positive electrode (e.g., 410 in FIGS. 1 to 15), a negative electrode spaced apart from the first positive electrode (e.g., 430 in FIGS. 1 to 15), and a separator disposed between the first positive electrode and the negative electrode (e.g., 420 in FIGS. 1 to 15).

[0248] The first positive electrode (e.g., 410 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive electrode current collector (e.g., 411 in FIGS. 1 to 15) comprising a first surface facing a first direction (e.g., 411a in FIGS. 1 to 15) and a second surface facing a second direction opposite to the first direction (e.g., 411b in FIGS. 1 to 15).

[0249] The first positive electrode (e.g., 410 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive electrode substrate (e.g., 412 in FIGS. 1 to 15) comprising a first-1 connection portion (e.g., 4121 in FIGS. 1 to 15) connected to the edge of the first surface of the first positive electrode current collector and a first-1 extension portion (e.g., 4122 in FIGS. 1 to 15) extended from the first-1 connection portion in a direction away from the first positive electrode current collector.

[0250] The first positive electrode (e.g., 410 of FIGS. 1 to 15) of a battery (e.g., 401 of FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first-second positive electrode substrate (e.g., 412 of FIGS. 1 to 15) comprising a first-second connecting portion (e.g., 4121 of FIGS. 1 to 15) connected to the edge of the second surface of the first positive electrode current collector and a first-second extension portion (e.g., 4122 of FIGS. 1 to 15) extended from the first-second connecting portion in a direction away from the first positive electrode current collector.

[0251] The first positive electrode (e.g., 410 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may comprise a first positive electrode active layer (e.g., 4131a in FIGS. 1 to 15) comprising a first positive electrode active portion (e.g., 4131a in FIGS. 1 to 15) applied to the first surface of the first positive electrode current collector, and further comprising a first positive electrode active layer (e.g., 4132a in FIGS. 1 to 15) extending from the first positive electrode active portion and covering the first positive electrode active layer and the first positive electrode current collector so as to be protected by the first positive electrode active layer; the first positive electrode active layer (e.g., 413a in FIGS. 1 to 15).

[0252] The first positive electrode (e.g., 410 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first-2 positive electrode active layer comprising a second-1 positive electrode active portion (e.g., 4131b in FIGS. 1 to 15) applied to the second surface of the first-2 positive electrode current collector, and further comprising a second-2 positive electrode active portion (e.g., 4132b in FIGS. 1 to 15) that covers the first-2 connection portion extending from the second-2 positive electrode active portion and disposed between the first-2 positive electrode active layer and the first-2 positive electrode current collector so as to be protected by the first-2 positive electrode active layer, and a first-2 positive electrode active layer (e.g., 413b in FIGS. 1 to 15).

[0253] The first positive current collector (e.g., 411 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first film layer (4113; 6113), a first-1 metal layer (e.g., 4111 in FIGS. 1 to 15) disposed on one side of the first film layer facing the first direction (e.g., 4113a in FIGS. 1 to 15) and forming the first side of the first positive current collector, and a first-2 metal layer (e.g., 4112 in FIGS. 1 to 15) disposed on the other side of the film layer facing the second direction (e.g., 4113b in FIGS. 1 to 15) and forming the second side.

[0254] The first-1 positive electrode substrate (e.g., 412a in FIGS. 1 to 15) and the first-2 positive electrode substrate (e.g., 412a in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may comprise a metal material.

[0255] One of the first-1 positive electrode substrate and the first-2 positive electrode substrate of a battery (e.g., 401 of FIGS. 1 to 15) according to one embodiment of the present disclosure may be connected to the first-1 metal layer, and the other of the first-1 positive electrode substrate and the first-2 positive electrode substrate may be connected to the first-2 metal layer.

[0256] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) may include a plurality of stacked battery cells (e.g., 403 in FIGS. 1 to 15).

[0257] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) comprises a second-1 positive electrode (e.g., 440a in FIGS. 1 to 15), a second-2 positive electrode (e.g., 440b in FIGS. 1 to 15), wherein the plurality of battery cells are disposed between the second-1 positive electrode and the second-2 positive electrode, and each of the second-1 positive electrode and the second-2 positive electrode comprises a second-1 positive electrode current collector (e.g., 441 in FIGS. 1 to 15) having a third surface (4411) facing the plurality of battery cells, a third connecting portion (e.g., 4421 in FIGS. 1 to 15) connected at one end of the second-1 positive electrode current collector, and a second-2 positive electrode current collector (e.g., 4422 in FIGS. 1 to 15) extending from the third connecting portion in a direction away from the second-1 positive electrode current collector. It may include 442 of 15) and a second positive active layer (e.g., 443 of FIGS. 1 to 15) applied to a part of the third surface and the third connection part.

[0258] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) may include an electrode tab (e.g., 404 in FIGS. 1 to 15) that is electrically connected to an electronic component outside the case.

[0259] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) comprises a first-1 fold portion (e.g., 41221a in FIGS. 1 to 15) that extends from the first-1 extension portion and is folded at a position corresponding to the end portion of the separator (e.g., 421 in FIGS. 1 to 15), and a first-2 fold portion (e.g., 41221b in FIGS. 1 to 15) that extends from the first-2 extension portion and is folded at a position corresponding to the end portion of the separator (e.g., 421 in FIGS. 1 to 15), and can be electrically connected to an electronic component outside the case by extending from the first-1 fold portion and the first-2 fold portion.

[0260] According to one embodiment of the present disclosure, the first-1 connection portion (e.g., 4211a in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) may be fixed to the first positive current collector, and the first-1 positive active layer may be applied between the first-1 connection portion and the negative electrode such that the first-1 connection portion and the negative electrode are spaced apart from each other, and the first-2 connection portion may be fixed to the first positive current collector, and the first-2 positive active layer may be applied between the first-2 connection portion and the negative electrode such that the first-2 connection portion and the negative electrode are spaced apart from each other.

[0261] Each of the first-1 connecting portion (e.g., 4211a in FIGS. 1 to 15) and the first-2 connecting portion (4211b) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may be fixed to the first positive current collector by welding or brazing.

[0262] The negative electrode (e.g., 530 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure comprises a first negative electrode current collector (e.g., 531 in FIGS. 1 to 15), a first-1 negative electrode connection portion (e.g., 5321a in FIGS. 1 to 15) connected to the edge of one surface of the first negative electrode current collector, and a first-1 negative electrode extension portion (e.g., 5322a in FIGS. 1 to 15) extending from the first-1 negative electrode connection portion, comprising a first-2 negative electrode substrate (e.g., 532a in FIGS. 1 to 15); It may include a first-2 cathode substrate (e.g., 532b in FIGS. 1 to 15) comprising a first-2 cathode connection portion (e.g., 5321b in FIGS. 1 to 15) connected to the edge of the other side of the first cathode current collector and a first-2 cathode extension portion (e.g., 5322b in FIGS. 1 to 15) extending from the first-2 cathode connection portion, a first-1 cathode active layer (e.g., 533a in FIGS. 1 to 15) applied to one side of the first cathode current collector and the first-1 cathode connection portion, and a first-2 cathode active layer (e.g., 533b in FIGS. 1 to 15) applied to the other side of the first cathode current collector and the first-2 cathode connection portion.

[0263] According to one embodiment of the present disclosure, the first negative current collector (e.g., 531 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) comprises a second film layer (e.g., 5313 in FIGS. 1 to 15), a first-1 negative metal layer (e.g., 5311 in FIGS. 1 to 15) disposed on one side of the second film layer (e.g., 5313a in FIGS. 1 to 15), and a first-2 negative metal layer (e.g., 5312 in FIGS. 1 to 15) disposed on the other side of the second film layer (e.g., 5313b in FIGS. 1 to 15), wherein the first-2 negative substrate and the first-2 negative substrate each comprise a metal material, and one of the first-1 negative substrate and the first-2 negative substrate is connected to the first-1 negative metal layer, and The other of the 1-1 cathode substrate and the 1-2 cathode substrate may be connected to the 1-2 cathode metal layer.

[0264] A battery according to one embodiment of the present disclosure (e.g., 401 of FIGS. 1 to 15) may include a first-1 negative bend portion (e.g., 53221a of FIGS. 1 to 15) that is bent and extends from the first-1 negative electrode connection portion in a direction away from the negative electrode, and a first-2 negative bend portion (e.g., 53221b of FIGS. 1 to 15) that is bent and extends from the first-2 negative electrode connection portion in a direction away from the negative electrode.

[0265] The first hardness of the first current collector (e.g., 415a in FIGS. 15) comprising the first positive current collector and the first-1 connecting portion and the first-2 connecting portion fixed to both sides of the first positive current collector of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may be greater than the second hardness of the second current collector (e.g., 415b in FIGS. 1 to 15) comprising the first positive current collector without the first-1 connecting portion and the first-2 connecting portion.

[0266] The first positive current collector of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include two metal layers spaced apart from each other and a polymer disposed between the two metal layers.

[0267] An electronic device according to one embodiment of the present disclosure (e.g., 101 of FIGS. 1 to 15) may include a housing (e.g., 210 of FIGS. 1 to 15); and a battery (e.g., 401 of FIGS. 1 to 15) disposed inside the housing, the battery comprising a case (e.g., 402 of FIGS. 1 to 15) forming the exterior of the battery and a plurality of battery cells (e.g., 403 of FIGS. 1 to 15) disposed inside the case.

[0268] A first positive electrode (e.g., 410 of FIGS. 1 to 15) of a battery (e.g., 401 of FIGS. 1 to 15) of an electronic device (e.g., 101 of FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive electrode current collector (e.g., 411 of FIGS. 1 to 15) comprising a first surface facing a first direction (e.g., 411a; 611a of FIGS. 1 to 15) and a second surface facing a second direction opposite to the first direction (e.g., 411b; 611b of FIGS. 1 to 15).

[0269] A first positive electrode (e.g., 410 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive electrode substrate (412; 612a) comprising a first-1 connecting portion (4121a; 6121a) and a first-2 connecting portion (4122b; 6122b) respectively connected to one end of both sides of the first positive electrode current collector, and a first-1 extension portion (4122; 6122a) extending from the first-1 connecting portion in a direction away from the first-1 positive electrode current collector.

[0270] A first positive electrode (e.g., 410 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive electrode active layer (e.g., 4131a in FIGS. 1 to 15) comprising a first positive electrode active portion (e.g., 4131a in FIGS. 1 to 15) applied to the first surface of the first positive electrode current collector, and further comprising a first positive electrode active layer (e.g., 4132a in FIGS. 1 to 15) covering a first positive electrode active portion that extends from the first positive electrode active portion and is disposed between the first positive electrode active layer and the first positive electrode current collector so as to be protected by the first positive electrode active layer.

[0271] A first positive electrode (e.g., 410 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first-1 bend (e.g., 41221a in FIGS. 1 to 15) in which the extension of the plurality of battery cells is bent to form an electrode tab (e.g., 404 in FIGS. 1 to 15) connected to an electronic component of the electronic device outside the case.

[0272] A negative electrode (530) of a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure comprises a first negative electrode current collector (531), a first-1 negative electrode connection portion (e.g., 5321a in FIGS. 1 to 15) connected to the edge of one side of the first negative electrode current collector, and a first-1 negative electrode extension portion (e.g., 5322a in FIGS. 1 to 15) extending from the first-1 negative electrode connection portion, comprising a first-2 negative electrode substrate (e.g., 532a in FIGS. 1 to 15); It may include a first-2 cathode substrate (e.g., 532b in FIGS. 1 to 15) comprising a first-2 cathode connection portion (e.g., 5321b in FIGS. 1 to 15) connected to the edge of the other side of the first cathode current collector and a first-2 cathode extension portion (e.g., 5322b in FIGS. 1 to 15) extending from the first-2 cathode connection portion, a first-1 cathode active layer (e.g., 33a in FIGS. 1 to 15) applied to one side of the first cathode current collector and the first-1 cathode connection portion, and a first-2 cathode active layer (e.g., 533b in FIGS. 1 to 15) applied to the other side of the first cathode current collector and the first-2 cathode connection portion.

[0273] A first-1 connection portion of a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure may be connected by welding between one end of the first positive current collector and the second portion.

[0274] A first positive current collector of a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure comprises two metal layers spaced apart from each other and a polymer disposed between the two metal layers, the first positive substrate is formed of a metal material, and the first connection may be connected to one end of one of the two metal layers.

[0275] A method (700) for manufacturing a battery (e.g., 401 of FIGS. 1 to 15) of an electronic device (e.g., 101 of FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive current collector providing operation (710) that provides a first positive current collector comprising two metal layers and a film layer between the two metal layers.

[0276] A method for manufacturing a battery (e.g., 401 of FIGS. 1 to 15) of an electronic device (e.g., 101 of FIGS. 1 to 15) according to one embodiment of the present disclosure (e.g., 700 of FIGS. 1 to 15) may include a coupling operation (e.g., 720 of FIGS. 1 to 15) of connecting a portion of another single second positive current collector to one end of the positive current collector.

[0277] A method for manufacturing a battery (e.g., 401 of FIGS. 1 to 15) of an electronic device (e.g., 101 of FIGS. 1 to 15) according to one embodiment of the present disclosure (e.g., 700 of FIGS. 1 to 15) may include a coating operation (e.g., 730 of FIGS. 1 to 15) of applying a first positive active layer to the first positive current collector and the second positive current collector.

[0278] A method for manufacturing a battery (e.g., 401 of FIGS. 1 to 15) of an electronic device (e.g., 101 of FIGS. 1 to 15) according to one embodiment of the present disclosure (e.g., 700 of FIGS. 1 to 15) may include a battery cell coupling operation (e.g., 740 of FIGS. 1 to 15) in which a separator and a negative electrode layer are laminated while the first positive electrode active layer is coated on the first positive electrode current collector and the second positive electrode current collector.

[0279] A coupling operation (e.g., 820 in FIGS. 1 to 15) of a method for manufacturing a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure (e.g., 700 in FIGS. 1 to 15) may include a coupling operation of the second positive current collector and the first positive current collector, wherein a portion of each of the second positive current collector and the first positive current collector is overlapped (e.g., 821 in FIGS. 1 to 15), and a coupling operation of the first positive current collector and the second positive current collector by welding at the portion where each of their respective portions overlaps (e.g., 822 in FIGS. 1 to 15).

[0280] The first positive active layer coating operation of the method for manufacturing a battery (e.g., 401 of FIGS. 1 to 15) of an electronic device (e.g., 101 of FIGS. 1 to 15) according to one embodiment of the present disclosure (e.g., 700 of FIGS. 1 to 15) may include a coating operation such that a portion of the second positive current collector coupled to the first positive current collector is disposed between the first positive active layer and the first positive current collector.

[0281] A battery cell coupling operation (e.g., 740 in FIGS. 1 to 15) of a method for manufacturing a battery (e.g., 401 in FIGS. 1 to 15) of an electronic device (e.g., 101 in FIGS. 1 to 15) according to one embodiment of the present disclosure (e.g., 700 in FIGS. 1 to 15) may include: a plurality of stacking operations (901); a coupling operation of the stacked battery cells (e.g., 902 in FIGS. 1 to 15); and a bending operation of another portion of the second positive current collector of the plurality of stacked battery cells (e.g., 903 in FIGS. 1 to 15).

[0282] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) may include a case (e.g., 402 in FIGS. 1 to 15).

[0283] A battery according to one embodiment of the present disclosure (e.g., 401 of FIGS. 1 to 15) may include a battery cell (e.g., 403 of FIGS. 1 to 15) disposed inside the case and comprising a positive electrode (e.g., 410 of FIGS. 1 to 15), a negative electrode (e.g., 430 of FIGS. 1 to 15), and a separator (420; 620) disposed between the positive electrode and the negative electrode.

[0284] The positive electrode of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a positive electrode current collector (e.g., 411 in FIGS. 1 to 15) comprising a first surface facing a first direction (e.g., 411a in FIGS. 1 to 15) and a second surface facing a second direction opposite to the first direction (e.g., 411b in FIGS. 1 to 15).

[0285] The positive electrode of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive electrode tab (e.g., 412 in FIGS. 1 to 15) comprising a first connecting portion (e.g., 4121a in FIGS. 1 to 15) connected to a portion of the first surface of the positive electrode current collector.

[0286] The positive electrode of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a second positive electrode substrate (e.g., 412 in FIGS. 1 to 15) comprising a second connecting portion (4121b; 6121b) connected to a portion of the second surface of the positive electrode current collector.

[0287] The positive electrode of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a first positive electrode active layer (e.g., 413a in FIGS. 1 to 15) applied to the first surface of the positive electrode current collector and the connection portion of the first positive electrode tab.

[0288] The positive electrode of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may include a second positive electrode active layer (e.g., 413b in FIGS. 1 to 15) applied to the connection portion of the second surface portion of the positive electrode current collector and the second positive electrode tab.

[0289] The positive current collector of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure comprises a first film layer (e.g., 4113 in FIGS. 1 to 15), a first metal layer (e.g., 4111 in FIGS. 1 to 15) disposed on one side of the first film layer facing the first direction (e.g., 4113a in FIGS. 1 to 15) and forming the first side of the positive current collector, and a second metal layer (e.g., 4112 in FIGS. 1 to 15) disposed on the other side of the film layer facing the second direction (e.g., 4113b in FIGS. 1 to 15) and forming the second side, wherein the first positive tab and the second positive tab comprise a metal material, one of the first positive tab and the second positive tab is connected to the first metal layer, and the other of the first positive tab and the second positive tab can be connected to the second metal layer. there is.

[0290] According to one embodiment of the present disclosure, the battery cell of a battery (e.g., 401 in FIGS. 1 to 15) comprises a plurality of stacked battery cells (e.g., 403 in FIGS. 1 to 15), and the battery of the electronic device comprises a second-1 positive electrode (e.g., 440a in FIGS. 1 to 15), a second-2 positive electrode (e.g., 440b in FIGS. 1 to 15), the plurality of battery cells are disposed between the second-1 positive electrode and the second-2 positive electrode, and each of the second-1 positive electrode and the second-2 positive electrode comprises a third surface (e.g., 4411 in FIGS. 1 to 15) facing the plurality of battery cells, and an outermost positive electrode tab (e.g., 4421 in FIGS. 1 to 15) connected to the third surface of the outermost positive electrode current collector (e.g., FIGS. 1 to 15). It may include 442 of FIGS. 1 to 15) and a third anode active layer (e.g., 443 of FIGS. 1 to 15) applied to the third surface and the outermost connection of the outermost anode tab.

[0291] According to one embodiment of the present disclosure, the first positive tab of a battery (e.g., 401 in FIGS. 1 to 15) includes a first extension portion extending from a connection portion of the first positive tab and a first fold portion (e.g., 41221a in FIGS. 1 to 15) extending from the first extension portion and folded at a position corresponding to an end portion of the separator (e.g., 421 in FIGS. 1 to 15), and the second positive tab includes a second extension portion extending from a connection portion of the second positive tab and a second fold portion (e.g., 41221b in FIGS. 1 to 15) extending from the second extension portion and folded at a position corresponding to an end portion of the separator (e.g., 421 in FIGS. 1 to 15), and the first positive tab and the second positive tab may form an electrode tab (e.g., 4041a in FIGS. 1 to 15).

[0292] A connection portion of the first positive tab of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure is fixed to the first surface of the positive current collector, and the first positive active layer is disposed between the first connection portion and the negative electrode such that the first connection portion and the negative electrode are spaced apart from each other, and a connection portion of the second positive tab is fixed to the second surface of the positive current collector, and the second positive active layer can be applied between the second connection portion and the negative electrode such that the second connection portion and the negative electrode are spaced apart from each other.

[0293] Each of the connecting portion of the first positive tab and the connecting portion of the second positive tab of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may be fixed to the positive current collector by welding or brazing.

[0294] According to one embodiment of the present disclosure, the negative electrode (e.g., 530 in FIGS. 1 to 15) of a battery (e.g., 401 in FIGS. 1 to 15) comprises: a negative current collector (e.g., (531 in FIGS. 1 to 15); a first negative electrode tab (e.g., 532a in FIGS. 1 to 15) comprising a negative electrode connection portion (5321a) connected to a part of one surface of the negative current collector; a second negative electrode tab (532b) comprising a negative electrode connection portion (e.g., 5321b in FIGS. 1 to 15) connected to a part of the other surface of the negative current collector; a first negative electrode active layer (e.g., 533a in FIGS. 1 to 15) applied to one surface of the negative current collector and the negative electrode connection portion of the first negative electrode tab; and a second negative electrode applied to the other surface of the first negative current collector and the negative electrode connection portion of the second negative electrode tab. It may include an active layer (e.g., 533b in FIGS. 1 to 15).

[0295] The negative current collector of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure comprises a second film layer (e.g., 5313 in FIGS. 1 to 15), a first negative metal layer (e.g., (5311) in FIGS. 1 to 15) disposed on one side of the second film layer (e.g., 5313a in FIGS. 1 to 15), and a second negative metal layer (e.g., 5312 in FIGS. 1 to 15) disposed on the other side of the second film layer (e.g., 5313b in FIGS. 1 to 15), wherein the first negative tab and the second negative tab each comprise a metal material, and one of the first negative tab and the second negative tab is connected to the first negative metal layer, and the other of the first negative tab and the second negative tab may be connected to the second negative metal layer.

[0296] A battery according to one embodiment of the present disclosure (e.g., 401 in FIGS. 1 to 15) may include a first negative bend portion (e.g., 53221a in FIGS. 1 to 15) that is bent and extends away from the negative electrode connection portion of the first negative electrode tab in a direction away from the negative electrode, and a second negative bend portion (e.g., 53221b in FIGS. 1 to 15) that is bent and extends away from the negative electrode connection portion of the second negative electrode tab in a direction away from the negative electrode.

[0297] According to one embodiment of the present disclosure, the first positive tab and the second positive tab of the first positive electrode of a battery (e.g., 401 in FIGS. 1 to 15) are electrically connected to a first lead tab (60411 in FIGS. 1 to 15) which is partially disposed inside the battery case, and the first negative tab and the second negative tab of the negative electrode may each be electrically connected to a second lead tab (e.g., 60421 in FIGS. 1 to 15) which is partially disposed inside the battery case at a position opposite to the first lead tab.

[0298] A first hardness of a first current collector (e.g., 415a in FIGS. 1 to 15) comprising a positive current collector, a connection portion of the first positive tab, and a connection portion of the second positive tab of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may be greater than a second hardness of a second current collector (e.g., 415b in FIGS. 1 to 15) comprising a positive current collector without a connection portion of the first positive tab and a connection portion of the second positive tab.

[0299] The positive current collector of a battery (e.g., 401 in FIGS. 1 to 15) according to one embodiment of the present disclosure may comprise two metal layers spaced apart from each other and a polymer disposed between the two metal layers.

Claims

1. In the battery (401), Case (402); and A battery cell (403; 603) comprising a positive electrode (410; 610)), a negative electrode (430; 530; 630), and a separator (420; 620) disposed between the positive electrode and the negative electrode, wherein the battery cell (403; 603) is disposed inside the above case and comprises a positive electrode (410; 610)), a negative electrode (430; 530; 630), and a separator (420; 620) disposed between the positive electrode and the negative electrode. The above positive electrode comprises a positive electrode current collector (411) having a first surface (411a) facing a first direction and a second surface (411b) facing a second direction opposite to the first direction; A first positive tab (412a; 612a) including a first connecting portion (4121a; 6121a) connected to a part of the first surface of the positive current collector; A second positive tap (412b; 612b) including a second connecting portion (4121b; 6121b) connected to a part of the second surface of the positive current collector; A first positive active layer (413a) applied to the first surface of the positive current collector and the connection portion of the first positive tab; and A battery comprising a second positive active layer (413b) applied to the second surface of the positive current collector and the connection portion of the second positive tab.

2. In Paragraph 1, The above positive current collector comprises a first film layer (4113), a first metal layer (4111) disposed on one side (4113a) of the first film layer facing the first direction and forming the first surface of the positive current collector, and a second metal layer (4112) disposed on the other side (4113b) of the film layer facing the second direction and forming the second surface. The first anode tab and the second anode tab include a metal material, and A battery in which one of the first positive tab and the second positive tab is connected to the first metal layer, and the other of the first positive tab and the second positive tab is connected to the second metal layer.

3. In Paragraph 1 or 2, The above battery cell includes a plurality of stacked battery cells (403; 603), and The battery of the above electronic device is, 2-1 anode (440a), 2-2 anode (440b), The plurality of battery cells are disposed between the second-1 positive electrode and the second-2 positive electrode, and A battery comprising each of the above-mentioned second-1 positive electrode and the above-mentioned second-2 positive electrode including an outermost positive electrode current collector (441) having a third surface (4411) facing the plurality of battery cells, an outermost positive electrode tab (442) having an outermost connection part (4421) connected to the third surface of the outermost positive electrode current collector, and a third positive electrode active layer (443) applied to the third surface and the outermost connection part of the outermost positive electrode tab.

4. In any one of paragraphs 1 to 3, The first positive tab includes a first extension portion (4122a) extending from the connection portion of the first positive tab, and a first fold portion (41221a) extending from the first extension portion and folded at a position corresponding to the end portion (421) of the separator. The second positive tab includes a second extension portion (4122b) extending from the connection portion of the second positive tab, and a second fold portion (41221b) extending from the second extension portion and folded at a position corresponding to the end portion (421) of the separator. The first positive tab and the second positive tab are extended to form an electrode tab (4041, 6041) in a battery.

5. In any one of paragraphs 1 through 4, The connection portion of the first positive tab is fixed to the first surface of the positive current collector, and the first positive active layer is disposed between the first connection portion and the negative electrode such that the first connection portion and the negative electrode are spaced apart from each other. A battery in which the connection portion of the second positive tab is fixed to the second surface of the positive current collector, and the second positive active layer is disposed between the second connection portion and the negative electrode such that the second connection portion and the negative electrode are spaced apart from each other.

6. In any one of paragraphs 1 through 5, A battery in which the connection portion of the first positive tab and the connection portion of the second positive tab are each fixed to the positive current collector by welding or brazing.

7. In any one of paragraphs 1 through 6, The above cathode (530) cathode current collector (531), A first cathode tab (532a) including a cathode connection portion (5321a) connected to a part of one side of the cathode current collector; A second cathode tab (532b) including a cathode connection portion (5321b) connected to a part of the other side of the above cathode current collector, and A battery comprising a first negative active layer (533a) applied to one side of the negative current collector and the negative connection portion of the first negative tab, and a second negative active layer (533b) applied to the other side of the first negative current collector and the negative connection portion of the second negative tab.

8. In Paragraph 7, The above-mentioned cathode current collector comprises a second film layer (5313), a first cathode metal layer (5311) disposed on one side (5313a) of the second film layer, and a second cathode metal layer (5312) disposed on the other side (5313b) of the second film layer. The first cathode tab and the second cathode tab each comprise a metal material, and A battery in which one of the first cathode tab and the second cathode tab is connected to the first cathode metal layer, and the other of the first cathode tab and the second cathode tab is connected to the second cathode metal layer.

9. In Paragraph 7 or 8, The battery comprises a first negative bend (53221a) that is bent and extends away from the negative electrode from the negative electrode connection portion of the first negative electrode tab, and a second negative bend (53221b) that is bent and extends away from the negative electrode from the negative electrode connection portion of the second negative electrode tab.

10. In any one of paragraphs 7 through 9, The first positive tab and the second positive tab of the first positive are electrically connected to a first lead tab (60411) that is partially disposed inside the battery case, and A battery in which the first cathode tab and the second cathode tab of the above cathode are each electrically connected to a second lead tab (60421) which is partially positioned inside the battery case at a position opposite to the first lead tab.

11. In any one of paragraphs 1 through 10, A battery in which the first hardness of the first current collector (415a), which includes the connection portion of the first positive tab and the connection portion of the second positive tab, is greater than the second hardness of the second current collector (415b), which includes the positive current collector without the connection portion of the first positive tab and the connection portion of the second positive tab.

12. In any one of paragraphs 1 through 11, The above positive current collector comprises two metal layers spaced apart from each other and a polymer disposed between the two metal layers.

13. In the electronic device (101), Housing (210); and A battery (401; 601) disposed inside the housing, comprising a case (402) forming the exterior of the battery and a plurality of battery cells (403; 603) disposed inside the case, Each of the above plurality of battery cells includes a first positive electrode (410; 610), a negative electrode (430; 530; 630) spaced apart from the first positive electrode, and a separator (420; 620) disposed between the first positive electrode and the negative electrode. The above-mentioned first anode is, A first positive current collector (411) comprising a first surface (411a; 611a) facing a first direction and a second surface (411b; 611b) facing a second direction opposite to the first direction, A first-1 positive substrate (412; 612a) comprising a first-1 connecting portion (4121a) respectively connected to one end of one side (411a) of the first positive current collector and a first-1 extension portion (4122a) extending from the first-1 connecting portion in a direction away from the first positive current collector; A first-1 positive active layer comprising a first-1 positive active portion (4131a; 6131a) applied to the first surface of the first positive current collector, and further comprising a first-1 positive active layer (413a) which includes a first-2 positive active portion (4132a) extending from the first-1 positive active portion and covering the first-1 connection portion disposed between the first-1 positive active layer and the first positive current collector. An electronic device comprising a first-1 bend portion (41221a) in which the extension portion of the plurality of battery cells is bent to form a part of an electrode tab (4041) that is electrically connected to a lead tab (40411).

14. In Paragraph 13, The first positive current collector comprises two metal layers spaced apart from each other and a polymer disposed between the two metal layers. The above-mentioned first-1 anode substrate is formed of a metal material, and The above-mentioned first-1 connection is an electronic device connected to one end of one of the two metal layers.

15. A method for manufacturing a battery of an electronic device (700), A first positive current collector providing operation (710) that provides a first positive current collector including two metal layers and a film layer between the two metal layers; A coupling operation (720; 820) of connecting a portion of another single second positive current collector to one end of the above positive current collector; A coating operation (730) of applying a first positive active layer to the first positive current collector and the second positive current collector; and A method for manufacturing a battery of an electronic device comprising a battery cell coupling operation (740) in which a separator and a cathode are laminated while the first positive current collector and the second positive current collector are coated with the first positive active layer.

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