KR20220050651A - Battery and electronic device comprising the same - Google Patents

Abstract

An electronic device according to various embodiments can include: a battery cell that has a predetermined length, includes a first tab drawn out from a first surface and a second tab drawn out from a second surface facing a direction different from the first surface, and is folded to have a structure in which the first tab and the second tab are vertically stacked in a first direction; a battery including a protection circuit module (PCM) disposed to be connected to the first tab and the second tab vertically stacked in the first direction; and a housing in which the battery is mounted.

Description

BATTERY AND ELECTRONIC DEVICE COMPRISING THE SAME

According to various embodiments, the present invention relates to a battery and an electronic device including the battery.

With the development of digital technology, electronic devices are gradually being transformed from rectangular shapes such as smartphones and tablet personal computers to various shapes. For example, electronic devices are being developed in the form of wearable electronic devices that can be worn by a user to improve portability and accessibility.

The electronic device may include at least one battery (eg, a battery pack or a battery cell) for supplying power. As wearable electronic devices such as glasses-type and wrist-type electronic devices gradually become slimmer, a battery mounted thereon also needs to be improved in a structure adapted to the deformable electronic device.

In general, when the separation distance between the positive and negative tabs of a battery increases, resistance increases due to an increase in the wiring length for connection with a protection circuit module (PCM), so draw out the positive and negative tabs in the same direction. there is.

When manufacturing a battery, the positive electrode tab and the negative electrode tab should be disposed with a minimum separation distance for electrical short circuit, and additionally, a space for a sealing member is required to secure sealing (or sealing, packing) performance.

However, when a battery (eg, a battery of 10 mm or less) needs to be implemented in a long and narrow form-factor internal space, such as a spectacle-type device or a wrist-type device, the positive tab and the negative tab are separated due to the limitation of the mounting space. It may be difficult to apply a battery structure that draws out in the same direction. Moreover, even if a general battery structure is applied, unnecessary design design is required to provide a separate mounting space due to insufficient process margin, and such design design may lower aesthetic factors and lower design competitiveness.

According to various embodiments, it is intended to propose a battery structure to be applied to a wearable electronic device having a long length and a narrow width, such as a glasses-type device or a wrist-type device.

An electronic device according to various embodiments of the present disclosure, comprising: a first tab having a predetermined length and extending from a first surface; and a second tab extending from a second surface facing a direction different from the first surface; A battery cell folded to have a structure in which the first tab and the second tab are vertically stacked in a first direction, and a protection circuit module disposed to be connected to the first tab and the second tab vertically stacked in the first direction It may include a battery including a (PCM: protection circuit module) and a housing for mounting the battery.

In the battery of the electronic device according to various embodiments of the present disclosure, a pouch having an inner space, disposed in the pouch inner space, positive electrode substrate parts and negative electrode substrate parts are alternately stacked with each other through a separator, and connected to the positive electrode substrate parts A battery cell comprising a first tab drawn out from a first surface of the pouch, and a second tab connected to the negative electrode substrates and drawn out from a second surface facing a direction different from the first surface, and the battery; Cells are folded to have a structure in which the first tab and the second tab are vertically stacked in a first direction, and the protection arranged to be connected to the vertically stacked first tab and the second tab in the first direction It may include a circuit module.

In the battery according to various embodiments, the positive tab and the negative tab are physically separated, but the battery cell is folded so that the positive tab and the negative tab are directed in the same direction to secure an electrical short circuit and at the same time, the connection wiring with the protection circuit module By minimizing it, it can be efficiently mounted in a wearable electronic device having a mounting space constraint.

According to various embodiments, by having a folded battery structure, space utilization according to the battery installation in the electronic device may be improved, and according to the application of the battery, a wearable electronic device having a long length and a narrow width such as a glasses-type device or a wrist-type device can be applied to

1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure;
2 is a block diagram of a battery pack according to various embodiments.
3 illustrates a battery cell structure according to various embodiments.
4 illustrates an arrangement configuration of a battery pack according to various embodiments.
5 illustrates an arrangement configuration of a battery pack according to various embodiments.
6 illustrates a battery cell according to various embodiments.
7 is a cross-sectional view illustrating an arrangement of a battery cell according to various embodiments.
8 is a cross-sectional view illustrating an arrangement of a battery cell according to various embodiments of the present disclosure;

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments.

Referring to FIG. 1 , in a network environment 100 , an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a 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 an antenna module 197 may be included. In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 may use less power than the main processor 121 or may be set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The auxiliary processor 123 is, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190). there is. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ). The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

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

The input module 150 may receive a command or data to be used in a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may 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 can be used for general purposes such as multimedia playback or recording playback. The receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 or an external electronic device (eg, a sound output module 155 ) directly or wirelessly connected to the electronic device 101 . A sound may be output through the electronic device 102 (eg, a speaker or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to one embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an 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.

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

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

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

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

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a LAN (local area network) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 includes various technologies for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less).

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. 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, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, underside) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( eg commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or part of the operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 djm vco needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 executes the function or service itself. Instead of or additionally, the request may be made to one or more external electronic devices to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service 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. Server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

2 is a block diagram of a battery pack according to an embodiment.

Referring to FIG. 2 , according to an embodiment, the electronic device 101 may include a battery 210 (eg, the battery 189 of FIG. 1 ) and a battery protection circuit (hereinafter, PCM (protection circuit module 230 ). can

According to an embodiment, the battery 210 is a device for supplying power to at least one component (eg, the component of FIG. 1 ) of the electronic device 101 , for example, a rechargeable secondary battery; or a fuel cell. The battery 210 may be integrally disposed inside the electronic device 101 , or may be disposed detachably from the electronic device 101 .

According to an embodiment, the battery 210 may include a battery cell 220 (or an electrode assembly). The battery cell 220 is a single cell, in which positive and negative electrodes are separated by a separator and stacked alternately—it may have a sealed structure including electrolyte. The battery cell 220 forms the outer surface of the battery cell 220, but may include a positive electrode tab drawn out from the positive electrode mounted therein and a negative electrode tab drawn out from the negative electrode. For example, the positive electrode may be composed of a positive electrode substrate (or positive electrode current collector) and a positive electrode mixture, and the negative electrode may be composed of a negative electrode substrate unit (or negative electrode current collector) and a negative electrode material. The positive electrode mixture may be formed by further adding a filler to a mixture or mixture of the positive electrode active material, the conductive material, and the binder. The negative electrode mixture may be formed by further adding a filler to a mixture or mixture of the negative electrode active material, the conductive material, and the binder.

According to an embodiment, the anode base part and the cathode base part may be alternately stacked while being electrically disconnected through the separator.

According to an embodiment, the positive electrode base part and the positive electrode base part may include a bonding region in which at least a partial region is joined together with the separator.

According to an embodiment, the PCM 230 may perform various functions (eg, a pre-blocking function) to prevent deterioration or burnout of the battery 210 . For example, the PCM 230 may include one or more circuit elements capable of electrically protecting the battery cell 220 and a circuit board (eg, a printed circuit board (PCB)) on which the circuit elements can be mounted. can

According to an embodiment, the PCM 230 may include a positive contact terminal in contact with the positive tab of the battery cell 220 and a negative contact terminal in contact with the negative tab of the battery cell on the circuit board. The PCM 230 may be electrically connected to the battery cell through a positive contact terminal and a negative contact terminal.

According to an embodiment, the PCM 230 may be used to maintain a voltage within a predetermined range (eg, prevent overcharge or overdischarge) when charging or discharging the battery cell 220 . For example, when the battery cell 220 is a lithium battery, the PCM 230 may control the cell voltage to operate in a range of 2V to 4.2V to prevent damage to the battery cell 220 .

According to some embodiments, the PCM 230 is, additionally or alternatively, a battery management system ( It may be configured as at least part of a battery management system (BMS).

3 illustrates a battery cell structure according to various embodiments.

Referring to FIG. 3 , a battery cell (eg, the battery cell 220 of FIG. 2 ) (or electrode assembly) according to an embodiment includes a pouch 310 having an inner space, a plurality of pouches mounted inside the pouch 310 . A first tab 340 (eg, a positive electrode tab) and a second tab 345 (eg, a negative electrode tab) connected to the substrate parts 320 and at least a portion of the plurality of substrate parts 320 may be included.

The pouch 310 is a structure for providing an internal space in which the ( ) 320 is accommodated, and may be implemented with a length and a width corresponding to a housing mounted on the electronic device 101 . For example, the pouch 310 has a limited width and a certain length to be disposed on the frame of the temples of the glasses-type wearable device (eg, AR glass) or the frame of the band (or strap) of the wrist-type wearable device (eg, electronic watch). can The pouch 310 may be formed of a member (eg, a metal such as aluminum or an aluminum alloy) whose appearance can be deformed in the form of bending, folding, or rolling.

According to one embodiment, the pouch 310 has a first side (A) facing in the first direction (①), and a second side (B) facing in a second direction (②) opposite to the first direction (①). ) and the third side (C) disposed in the third direction (③) along the length of the pouch 310 between the first side (A) and the second side (B) and the third side opposite to the third side It may include a fourth surface (D) facing the fourth direction (④). In the example of FIG. 3 , the pouch 310 is shown in a shape having a third side (C) and a fourth side (D), but the present invention is not limited thereto, and the pouch 310 may be formed in a cylindrical or cylindrical shape.

According to an embodiment, the pouch 310 may be sealed by mounting a plurality of base parts 320 together with the electrolyte 330 . The pouch 310 may seal the electrolyte 330 (eg, a lithium salt-containing non-aqueous electrolyte) by forming or folding. According to one embodiment, after the plurality of substrate parts 320 are disposed in the inner space of the pouch 310 , the plurality of substrate parts are inserted into the inner space of the pouch 310 through a series of processes of injecting and sealing the electrolyte 330 . 320 may be mounted.

According to an embodiment, the plurality of base parts 320 include positive electrode base parts 321) and a negative electrode that are alternately stacked in the longitudinal direction of the pouch 310 (eg, the first direction (①) and the second direction (②)). It may include base parts 323 . According to an exemplary embodiment, three plates are alternately stacked on each other in the anode base parts 321 and the cathode base parts 323 , but more may be stacked. The cathode base parts 321 may include at least one of a cathode active material, for example, lithium cobalt oxide (LiCoO ₂ ), lithium nickel oxide (LiNiO2), lithium manganese oxide (LiMnO2), or lithium (Li) copper oxide. . The anode base parts 323 may be formed of an anode active material, for example, non-graphitizable carbon, graphite carbon, lithium metal, lithium alloy, or silicon alloy. , or may include at least one of a tin alloy.

According to an embodiment, each of the positive electrode base parts 321 and the negative electrode base part 323 may include a mixture layer applied on one or both surfaces. According to one embodiment, the mixture layer may be formed by further adding a filler to a mixture or mixture of an active material, a conductive material, and a binder.

According to an embodiment, the anode base parts 321 and the cathode base parts 323 may be stacked through separators 325 for electrical disconnection. The separators 325 are thin films made of an insulating material, and are made of, for example, chemical resistance and hydrophobic olefin-based polymer such as polypropylene), glass fiber, or polyethylene. formed sheet or non-woven fabric. According to some embodiments, the plurality of base parts 320 may be formed by further adding a filler to a mixture or mixture of a conductive agent and a binder.

According to one embodiment, the positive electrode substrate parts 321 are connected to a first tab 340 (eg, positive electrode tab) for electrical connection to the outside, and the negative electrode substrate parts 323 are the second tab 345 ( Example: negative tab) and each can be connected.

According to one embodiment, the first tab 340 extends from the positive electrode base parts 321 and is disposed in a shape protruding from one end of the pouch 310 , for example, on the first surface A, or the first surface. It can be arranged in a form exposed to (A). The second tab 350 extends from the negative electrode base parts 323 and is disposed to protrude from the other end of the pouch 310 , for example, on the second surface B, or exposed on the second surface B. can be placed in the form. The first tab 340 and the second tab 345 are respectively disposed in different directions of the pouch 310 , thereby securing a separation distance between terminals.

According to an embodiment, the first tab 340 further includes a first sealing member 350 surrounding the first tab 340 to secure sealing performance of the pouch 310 , and the second tab 345 is A second sealing member 355 surrounding the second tab 345 may be further included. According to some embodiments, the first sealing member 350 and the second sealing member 355 may be omitted.

According to an embodiment, when the battery cell 220 is folded together with the plurality of base parts 320 and the pouch 310 , the cathode base parts 321 , the anode base parts 323 and the separators 325 slide in a sliding manner. It may have a bending, folding, or rolling form by crossing the . For example, the battery cell 220 may have a folded structure without structural deformation or stress of the plates by sliding the positive electrode substrate parts 321 and the negative electrode substrate parts 323 mounted therein in a sliding manner.

According to an embodiment, the battery cell 220 may be mounted on the electronic device 101 in a structure in which the central region is folded in order to reduce a connection line with the PCM (eg, the battery protection circuit 230 of FIG. 2 ). For example, assuming that the folding area of the battery cell 220 is a1, the non-folding areas arranged in the third direction (③) and the fourth direction (④) may have the same length as a2, but do not limit

4 illustrates an arrangement configuration of a battery pack according to various embodiments.

Referring to FIG. 4 , according to an embodiment, the electronic device 101 may mount a battery 401 (or a battery pack) (eg, the battery 210 of FIG. 2 ). The battery 401 may be mounted in a specific space (eg, an AR glass leg area, a watch band, or a strap area) of the electronic device.

According to one embodiment, the battery 401, as shown in Figure 3, the first terminal 420 (eg, the first terminal 340 of Figure 3) is disposed on the first surface (A), The second terminal 425 (eg, the battery cell 410 in which the second terminal 345 of FIG. 3 is disposed (eg, the battery cell 220 of FIGS. 2 and 3 ) on the second surface B is folded (folding) to have a structure in which the first terminal 420 and the second terminal 425 are vertically stacked (eg, ③④ direction) to face the same direction (eg, the first direction (①)), the folded battery cell The PCM 430 may be disposed in the first direction of the 410. For example, the first side A and the second side B of the battery cell 410 face the first direction (①). However, it may be folded to face the second direction (②), but the present invention is not limited thereto.

According to an embodiment, the battery cell 410 includes a folding area a1 and non-folding areas a2 stacked in the third direction (③) and the fourth direction (④), and the non-folding areas are (a2) may have the same length.

According to an embodiment, the PCM 430 includes a circuit board on which a protection circuit is formed and contact terminals, and may be a structure (eg, a PCM housing or a PCM case) for accommodating the circuit board and protecting the protection circuit.

According to an embodiment, the PCM 430 has a first contact terminal 440 in contact with the first tab 420 and a second contact terminal 445 in contact with the second tab 425 on the first surface. The structure is vertically stacked in the three directions (③) and the fourth direction (④), and the insulating member 450 may be disposed between the first contact terminal 440 and the second contact terminal 445 . The insulating member 450 may be disposed to overlap the entire area or at least a part of the first tab 420 and the second tab 425 . The insulating member 450 may be disposed to electrically short the first tab 420 and the second tab 425 .

According to an embodiment, when the first tab 420 is a positive terminal and the second tab 425 is a negative terminal, the first contact terminal 440 of the PCM 430 has a positive electrode and a second contact The terminal 445 may have a negative electrode, and when the first tab 420 is a negative terminal and the second tab 425 is a positive terminal, the contact terminals 440 and 445 of the PCM 430 are vice versa. can

According to an embodiment, the insulating member 450 may protrude from one end at which the first contact terminal 445 and the second contact terminal are disposed, and have the same length as the first tab 420 and the second tab 425 . can have The insulating member 450 may have a relatively wider width (or area) than the widths of the first tab 420 and the second tab 425 . According to an embodiment, the insulating member 450 may be integrally formed with the PCM 430 or may have a structure adhered to the PCM 430 .

According to one embodiment, the PCM 430 is configured to minimize power transmission loss at the closest position according to the arrangement of the printed circuit board (eg, the board on which a part of the configuration of FIG. 1 is disposed) disposed in the electronic device 101 . can be placed.

According to an embodiment, although the battery cell 410 and the PCM 430 are separated in FIG. 4 , the battery cell 410 and the PCM 430 may be connected in a fitting structure. For example, when the battery cell 410 and the PCM 430 are connected, the first tab 420 and the first contact terminal 440 are in contact, and the second tab 425 and the second contact terminal 445 are in contact. Accordingly, between the negative electrode and the positive electrode may be electrically shorted due to the insulating member 450 . The first tab 420 and the second tab 425 are physically spaced apart, but are arranged in a stacked structure to face the same direction (eg, the first direction (①)), so the minimum distance of the PCM 430 is can be connected to

According to an embodiment, although not shown in FIG. 4 , the first tab 420 and the second tab 425 may each include the sealing member shown in FIG. 3 .

5 illustrates an arrangement configuration of a battery pack according to various embodiments.

Referring to FIG. 5 , according to an embodiment, the electronic device 101 includes a first tab 520 (eg, the first tab 340 of FIG. 3 ) on the first surface A shown in FIG. 3 . battery cell 510 (eg, the battery cell 310 of FIGS. 2 and 3 ) in which the second tab 525 (eg, the second terminal 345 of FIG. 3 ) is disposed on the second surface B ) is folded so that the first tab 520 and the second tab 525 face the same direction (eg, the first direction (①)) has a vertically stacked structure (eg, ③④ direction), and is folded A battery having a PCM 530 disposed thereon may be mounted in a first direction of the battery cell 510. The PCM 530 may have a first contact terminal 540 disposed on one surface facing the third direction ③ , the second contact terminal 545 may be disposed on the other surface facing the fourth direction ④ For example, the first contact terminal 540 on the upper surface of the circuit board on which the protection circuit of the PCM 530 is formed. ) is disposed and the second contact terminal 545 may be disposed on the rear surface opposite to the upper surface.

According to an embodiment, the first tab 520 and the second tab 525 may be coupled in a structure having a step difference to overlap the first contact terminal 540 and the second contact terminal 545 , but this is not limited thereto. is not doing

6 illustrates a battery cell according to various embodiments.

Referring to FIG. 6 , according to an embodiment, in the battery cell 610 , a first tab 620 (eg, the first terminal 340 of FIG. 3 ) is disposed on the first surface A, and the second A second tab 630 (eg, a battery cell 610 in which the second tab 345 of FIG. 3 is disposed (eg, the battery cell 310 of FIGS. 2 and 3 ) on the surface B is folded (folding) ) so that the first tab 460 and the second tab 630) face the same direction (eg, the first direction (①)), in a state with a vertically stacked structure (eg, ③ ④ direction) It may have a bent structure.

According to an embodiment, the battery cell 610 may have an area a3 in which the firstly folded area a1 is secondarily bent, and due to the curved shape, the first tab 620 is disposed. A step may be formed between the non-folding region and the non-folding region in which the second tab 630 is disposed.

Although not shown in the drawings, due to the step difference between the first tab 620 and the second tab 630 , the first contact terminal and the second contact terminal disposed on the PCM (not shown) also have a step difference. can be For example, the length of the second contact terminal may be relatively longer than that of the first contact terminal.

For example, in the case of a glasses-type wearable electronic device, it has a streamlined or curved frame (eg, temples) due to a wearing comfort or ergonomic design, and a battery cell 610 under conditions requiring miniaturization and high-density mounting. may be bent into a structure suitable for the frame of the electronic device. Accordingly, the battery cell 610 may be mounted using the internal space of the electronic device.

Hereinafter, the cross-sections shown in FIGS. 7 and 8 illustrate a cross-section (c-c') of the battery cell shown in FIG. 4 , but the present invention is not limited thereto, and may also be applied to the battery cell of the structure of FIGS. 5 and 6 . there is.

7 is a cross-sectional view illustrating an arrangement of a battery cell according to an exemplary embodiment.

Referring to FIG. 7 , in the battery cell 710 having a folded structure according to an embodiment, the first tab 720 and the second tab 725 are asymmetrically positioned, misaligned, or at least partially overlapped. It may have a structure derived from

For example, when the battery cell 710 is folded and looking at the cross section C-C′ of the non-folding area a2 arranged in the third direction (③) and the fourth direction (④), the battery cell 710 is ) may be divided into an upper region 710a on which the first surface A is disposed and a lower region 710b on which the second surface B is disposed. In the drawing, the upper region 710a and the lower region 710b are arranged as being separated, but may have a structure connected to each other in the omitted folding region a1 . For example, the upper region 710a may be disposed in the third direction (③), and the lower region 710b may be folded in the fourth direction (④).

According to one embodiment, the first tab 720 is withdrawn from the first position on the first surface A of the battery cell 710 and the second tab 725 is located on the second surface B of the battery cell 710 at the first position. may be fetched from a non-overlapping second position. Electrical shorting performance of the first tab 720 and the second tab 725 may be increased as the first tab 720 and the second tab 725 are drawn out at positions asymmetrical to each other.

According to some embodiments, the first tab 720 further includes a first sealing member 730 surrounding the first tab 720 , the second tab 725 surrounding the second tab 725 . A second sealing member 735 may be further included.

8 is a cross-sectional view illustrating an arrangement of a battery cell according to an embodiment.

Referring to FIG. 7 , according to one embodiment, the battery cell 810 of the folded structure has a structure in which the first tab 820 and the second tab 825 are drawn out from a symmetrical position or a position overlapping each other. can

For example, when the battery cell 810 is folded and looking at the cross section c-c' of the non-folding area a2 arranged in the third direction (③) and the fourth direction (④), the battery cell 810 is ) may be divided into an upper region 810a on which the first surface A is disposed and a lower region 810b on which the second surface B is disposed. In the drawing, the upper region 810a and the lower region 810b are arranged as separated, but may have a structure connected to each other in the omitted folding region a1 .

According to an embodiment, the first tab 820 is drawn out from the first position on the first side A of the battery cell 810 and the second tab 825 is located at the first position on the second side B of the battery cell 810 . It can be retrieved from a second position overlapping with . The first tab 720 and the second tab 725 may be drawn out at symmetrical positions.

According to some embodiments, the first tab 820 further includes a first sealing member 830 surrounding the first tab 820 , the second tab 825 surrounding the second tab 825 . A second sealing member 835 may be further included.

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

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

101: electronic device
189,210, 410, 510: battery
220: battery cell
230: protection circuit module

Claims (20)

In an electronic device,
A first tab having a predetermined length and extending from a first surface, and a second tab extending from a second surface facing a different direction from the first surface, wherein the first tab and the second tab are Battery cells folded to have a vertically stacked structure in one direction; and
a battery including a protection circuit module (PCM) disposed to be connected to the vertically stacked first tabs and the second tabs in the first direction; and
and a housing in which the battery is mounted. According to claim 1,
A housing in which the battery is mounted,
at least one of a leg frame of a spectacle-type wearable electronic device and a wristband frame of a wrist-type wearable electronic device,
The battery cell has a structure that is deformed to correspond to the shape of the housing. According to claim 1,
The battery cell is
Further comprising the positive electrode base material parts and the positive electrode mixture connected to the first tab, and the negative electrode base parts and the negative electrode mixture connected to the second tab,
The positive electrode mixture includes at least one of a mixture of a positive electrode active material, a conductive material, and a binder, and the negative electrode mixture includes at least one of a mixture of a negative electrode active material, a conductive material, and a binder. According to claim 1,
The battery cell has a half-length-folded structure, at least a part of the electronic device having a bent structure or a rolling structure. According to claim 1,
A circuit board or an insulating member of a protection circuit module is disposed between the vertically stacked first tabs and the second tabs. According to claim 1,
The electronic device of claim 1, wherein the first tab includes a first sealing member for sealing, and the second tab includes a second sealing member. According to claim 1,
The protection circuit module is
The electronic device having a structure in which a first contact terminal is disposed at a position opposite to the first direction to correspond to the first tab, and a second contact terminal is disposed at a position corresponding to the second tab. According to claim 1,
The protection circuit module is
A circuit board of the protection circuit module is disposed between the first tab and the second tab on which the circuit board of the protection circuit module is vertically stacked,
The electronic device having a structure in which the first contact terminal is disposed on a first surface of the circuit board, and the second contact terminal is disposed on a second surface opposite to the first surface. According to claim 1,
The vertically stacked first tab and the second tab have a structure in which they are drawn out from an asymmetrical position, a position misaligned with each other, or at least partially overlapping each other. According to claim 1,
and the vertically stacked first tab and the second tab are drawn out from a symmetrical position or from a position overlapping each other. In the battery of an electronic device,
A pouch having an interior space;
It is disposed in the inner space of the pouch, and the positive electrode substrate parts and the negative electrode substrate parts are alternately stacked with each other through a separator,
A first tab connected to the positive electrode substrates and drawn out from the first surface of the pouch, and a second tab connected to the negative electrode substrates and drawn out from a second surface facing a different direction from the first surface a battery cell; and
The battery cells are folded to have a vertically stacked structure in which the first tab and the second tab face a first direction,
and a protection circuit module disposed to be connected to the vertically stacked first tabs and the second tabs in the first direction. 12. The method of claim 11,
The battery of the electronic device has a structure in which the battery cell is folded in half length, a structure in which at least a portion is bent, or a structure in which the battery cell is rolled. 12. The method of claim 11,
The battery of the electronic device, wherein the positive electrode base parts further include at least one of a mixture of a positive electrode active material, a conductive material, and a binder, and the negative electrode base parts further include at least one of a mixture of a negative electrode active material, a conductive material, and a binder. 12. The method of claim 11,
A battery of an electronic device in which a circuit board or an insulating member of a protection circuit module is disposed between the vertically stacked first tabs and the second tabs. 12. The method of claim 11,
The battery of the electronic device, wherein the first tab includes a first sealing member for sealing, and the second tab includes a second sealing member. 12. The method of claim 11,
The protection circuit module is
The battery of an electronic device having a structure in which a first contact terminal is disposed at a position opposite to the first direction to correspond to the first tab and a second contact terminal is disposed at a position corresponding to the second tab. 12. The method of claim 11,
The protection circuit module is
A circuit board of the protection circuit module is disposed between the first tab and the second tab on which the circuit board of the protection circuit module is vertically stacked,
The battery of an electronic device having a structure in which the first contact terminal is disposed on a first surface of the circuit board, and the second contact terminal is disposed on a second surface opposite to the first surface. 12. The method of claim 11,
The battery of the electronic device has a structure in which the vertically stacked first terminal and the second terminal are drawn out from an asymmetric position, a position misaligned with each other, or a position where at least a portion overlaps. 12. The method of claim 11,
wherein the vertically stacked first tab and the second tab are drawn out from a symmetrical position or from a position overlapping each other. 12. The method of claim 11,
The battery cell of the electronic device has a structure in which at least part of the battery cell is bent or bent in a half-length folded structure.

Images