Battery structure and electronic device
By relocating the layout of electronic components and power switch modules on a flexible circuit board, the problem of high current heating at the battery head was solved, thereby improving battery capacity and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUNWODA ELECTRONICS CO LTD
- Filing Date
- 2026-06-03
- Publication Date
- 2026-07-31
AI Technical Summary
In existing battery structures, the protection circuit module is concentrated at the battery head, resulting in high current flow and significant heat generation. Furthermore, the package size is difficult to compress, limiting the improvement of battery capacity.
By setting through welding units on the flexible circuit board, electronic components are moved from the battery head packaging area to between the tabs, and the power switch module is arranged in the non-packaged area. A layered current transmission and cover film structure is adopted to avoid local temperature rise caused by high current load.
It significantly reduces the space occupied by the battery head, increases battery capacity, reduces the risk of module overheating, and improves the long-term stability and scalability of the battery system.
Smart Images
Figure CN122495003A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and more particularly to a battery structure and an electronic device. Background Technology
[0002] In the field of modern consumer electronics, especially in miniaturized electronic devices such as mobile phones and wearable devices, users' demands for device battery life continue to increase. As a core energy module, balancing the capacity and size of batteries has become a key challenge for technological development. Batteries are widely used in electronic devices due to their high energy density and lightweight characteristics.
[0003] Taking mobile phone batteries as an example, in existing battery structures, the protection circuit module (PCM), as a core component of battery management, is usually integrated in the head area of the battery, and its layout directly affects the available space of the cell. As users' demands for battery capacity and thinner devices continue to grow, battery manufacturers are constantly reducing the size of the PCM to free up more space for the cell, thereby increasing battery capacity.
[0004] However, in existing electronic devices, battery protection circuit modules typically use a single-sided panel layout and are vertically mounted on the battery head. This structure concentrates electronic components such as the protection IC module, fuel gauge module, and power module in the packaging area of the battery head. Specifically, the charging and discharging current must pass through the circuit path between the tabs and the PCM module, causing the protection IC and fuel gauge module to be in a high-current state for a long time, resulting in significant heat generation. In addition, because all electronic components are concentrated in the battery head, the package size is difficult to further reduce, and the usable space of the cell is greatly occupied, directly limiting the increase in battery capacity. Summary of the Invention
[0005] This application provides a battery structure and an electronic device. By incorporating a through-hole welding unit, the current carrying capacity of the welding area is significantly improved. The through-hole welding unit transmits current in layers to the upper and lower layers of the first circuit board, effectively dispersing the current density and avoiding the risk of localized overheating or failure caused by concentrated current in a single-layer solder pad. In addition, the cover film and the recessed structure physically restrict the flow range of the insulation portion, preventing the insulation portion from overflowing.
[0006] The first aspect of this application provides a battery structure, including:
[0007] The battery cell has a first tab and a second tab;
[0008] A flexible circuit board is provided with a first electronic component and a second electronic component. The first electronic component is located between the first electrode and the second electrode, and the second electronic component is located outside the head packaging area of the battery cell. The first electronic component and the second electronic component are electrically connected through signal lines on the flexible circuit board.
[0009] The flexible circuit board is also provided with a first output terminal and a second output terminal. The first tab is electrically connected to the first output terminal to form a first connection circuit, and the second tab is electrically connected to the second output terminal to form a second connection circuit. Neither the first connection circuit nor the second connection circuit passes through the first electronic component.
[0010] The battery structure provided in the first aspect of this application includes a battery cell and a flexible circuit board. The battery cell has a first tab and a second tab. A first electronic component and a second electronic component are disposed on the flexible circuit board. The first electronic component is located between the first tab and the second tab, and the second electronic component is located outside the head packaging area of the battery cell. The first electronic component and the second electronic component are electrically connected via signal lines on the flexible circuit board. The flexible circuit board also has a first output terminal and a second output terminal. The first tab is electrically connected to the first output terminal to form a first connection circuit, and the second tab is electrically connected to the second output terminal to form a second connection circuit. Neither the first connection circuit nor the second connection circuit passes through the first electronic component. Thus, the battery structure provided in this application significantly reduces the space occupied at the battery head by relocating the first electronic component from the battery head packaging area to the flexible circuit board carrier between the first tab and the second tab, and by arranging the second electronic component in the non-packaging area, freeing up space for the battery cell extension and thereby increasing the overall battery capacity. The charging and discharging current flows directly through the first tab and the first output terminal, and through the second tab and the second output terminal, bypassing the first electronic component. This avoids localized temperature rise caused by high current load, reduces the risk of module overheating, and improves the long-term stability of the battery system.
[0011] In one possible implementation, the flexible circuit board has a first portion located within a head-encapsulation region and a second portion extending out of the head-encapsulation region, with a first electronic component disposed in the first portion and a second electronic component, a first output terminal, and a second output terminal disposed in the second portion.
[0012] In one possible implementation, the first electronic component includes a protection module circuit or a fuel gauge module circuit.
[0013] In one possible implementation, the second electronic component is a power switch module.
[0014] In one possible implementation, the power switch module includes a first module circuit and a second module circuit;
[0015] On the flexible circuit board, the first module circuit is arranged on the side close to the first electrode, and the first output terminal is located on the side of the first module circuit close to the first electrode. The second module circuit is arranged on the side close to the second electrode, and the second output terminal is located on the side of the second module circuit close to the second electrode.
[0016] The first electronic component is connected between the first module circuit and the second module circuit, and both ends of the first electronic component are electrically connected to the first module circuit and the second module circuit, respectively.
[0017] In one possible implementation, the power switch module includes a first power module circuit and a second power module circuit;
[0018] The flexible circuit board is arranged in a straight line, with the first power module circuit and the second power module circuit respectively located at both ends of the length direction of the flexible circuit board.
[0019] The first electronic component is connected between the first power module circuit and the second power module circuit, and both ends of the first electronic component are electrically connected to the first power module circuit and the second power module circuit, respectively.
[0020] In one possible implementation, the power switch module includes a first power module circuit, a second power module circuit, a first reinforcement structure, and a second reinforcement structure.
[0021] On the flexible circuit board, the first power module circuit and the second power module circuit are respectively disposed on both sides of the length direction of the first electronic component. The first reinforcing structure is disposed at the end of the first power module circuit away from the first electronic component, and the second reinforcing structure is disposed at the end of the second power module circuit away from the first electronic component.
[0022] In one possible implementation, the first output terminal and the second output terminal are isolated from each other and output positive current and negative current independently, respectively.
[0023] In one possible implementation, the flexible circuit board is electrically connected to the mainboard circuitry via signal pins, which are used to transmit monitoring signals from the first electronic component.
[0024] A second aspect of this application provides an electronic device including the battery structure described above.
[0025] It should be understood that the second aspect of this application corresponds to the technical solution of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here.
[0026] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems solved by a battery structure and electronic device provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only a part of the embodiments of this application. These drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of a battery structure provided in an embodiment of this application;
[0029] Figure 2 This is a schematic diagram of another battery structure provided in an embodiment of this application;
[0030] Figure 3 This is a schematic diagram of another battery structure provided in an embodiment of this application.
[0031] Explanation of reference numerals in the attached figures:
[0032] 100-Battery Structure;
[0033] 200 - Battery cell; 210 - First tab; 220 - Second tab;
[0034] 300 - Flexible circuit board; 310 - First electronic component; 320 - Second electronic component; 321 - First module circuit; 322 - Second module circuit; 323 - First power module circuit; 324 - Second power module circuit; 325 - First reinforcing structure; 326 - Second reinforcing structure; 330 - First output terminal; 340 - Second output terminal; 350 - First part; 360 - Second part. Detailed Implementation
[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0036] As described in the background section, in existing electronic devices, the battery protection circuit module typically uses a single-panel layout and is vertically mounted on the battery head. This structure concentrates electronic components such as the protection IC module, fuel gauge module, and power module in the packaging area of the battery head. Specifically, the charging and discharging current must pass through the circuit path between the tabs and the PCM module, causing the protection IC and fuel gauge module to be in a high-current state for a long time, resulting in significant heat generation. Furthermore, because all electronic components are concentrated in the battery head, the package size is difficult to further reduce, and the available space in the cell is significantly occupied, directly limiting the increase in battery capacity.
[0037] To address the aforementioned technical problems, the first aspect of this application provides a battery structure. The battery structure includes a battery cell and a flexible circuit board. The battery cell has a first tab and a second tab. A first electronic component and a second electronic component are disposed on the flexible circuit board. The first electronic component is located between the first tab and the second tab, and the second electronic component is located outside the head packaging area of the battery cell. The first electronic component and the second electronic component are electrically connected via signal lines on the flexible circuit board. The flexible circuit board also has a first output terminal and a second output terminal. The first tab is electrically connected to the first output terminal to form a first connection circuit, and the second tab is electrically connected to the second output terminal to form a second connection circuit. Neither the first connection circuit nor the second connection circuit passes through the first electronic component. Thus, the battery structure provided by this application significantly reduces the space occupied at the battery head by relocating the first electronic component from the battery head packaging area to the flexible circuit board carrier between the first and second tabs, and by arranging the second electronic component in the non-packaging area, freeing up space for the battery cell extension and thereby increasing the overall battery capacity. The charging and discharging current flows directly through the first tab and the first output terminal, and through the second tab and the second output terminal, bypassing the first electronic component. This avoids localized temperature rise caused by high current load, reduces the risk of module overheating, and improves the long-term stability of the battery system.
[0038] A second aspect of this application provides an electronic device. The electronic device includes the battery structure described above.
[0039] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0040] This application provides a battery structure and an electronic device. By relocating the first electronic component from the battery head packaging area to a flexible circuit board carrier between the first and second tabs, and arranging the second electronic component in the non-packaging area, the space occupied in the battery head is significantly reduced, freeing up space for cell extension and thus increasing the overall battery capacity. The charging and discharging current flows directly through the flow between the first tab and the first output terminal and the flow between the second tab and the second output terminal, bypassing the first electronic component, avoiding local temperature rise caused by high current load, reducing the risk of module overheating, and improving the long-term stability of the battery system. The specific structure of the battery structure and electronic device provided in this application embodiment will be described below with reference to the accompanying drawings.
[0041] refer to Figure 1 This application provides a battery structure 100 in its first aspect. The battery structure 100 may include a battery cell 200 and a flexible circuit board 300. In this embodiment, the battery cell 200 may have a first tab 210 and a second tab 220. The flexible circuit board 300 may be provided with a first electronic component 310, a second electronic component 320, a first output terminal 330, and a second output terminal 340.
[0042] In this embodiment, for example, the first tab 210 can be a positive tab, the second tab 220 can be a negative tab, the first output terminal 330 can be a positive output terminal, and the second output terminal 340 can be a negative output terminal. This embodiment is not intended to be limiting.
[0043] Continue to refer to Figure 1 Based on the above embodiments, in one possible implementation, the first electronic component 310 may be located in the flexible circuit board 300 area between the first tab 210 and the second tab 220, while the second electronic component 320 may be located outside the head packaging area of the battery cell 200. The first electronic component 310 and the second electronic component 320 may be electrically connected through signal lines on the flexible circuit board 300.
[0044] Additionally, the first tab 210 is electrically connected to the first output terminal 330 to form a first connection circuit. Correspondingly, the second tab 220 is electrically connected to the second output terminal 340 to form a second connection circuit. Neither the first connection circuit nor the second connection circuit passes through the first electronic component 310, thus physically separating the first connection circuit and the second connection circuit from the first electronic component 310.
[0045] Thus, the battery structure 100 provided in this embodiment significantly reduces the space occupied at the battery head by relocating the first electronic component 310 from the battery head packaging area to the flexible circuit board 300 carrier between the tabs, and arranging the second electronic component 320 in the non-packaging area. This frees up more space for the extension of the cell 200, thereby increasing the overall capacity within the same battery volume. Simultaneously, the charging and discharging current flows directly through the tabs and output terminals, completely bypassing the first electronic component 310. This avoids localized temperature rise on the first electronic component 310 due to high current load, reduces the risk of module overheating, and effectively improves the long-term stability of the battery system under prolonged high-current operation.
[0046] Furthermore, the flexible wiring capability of the flexible circuit board 300 allows the layout of the first electronic component 310 to be unrestricted by headspace space, and forms an efficient connection with the mainboard through signal lines, enhancing modular expansion capabilities and facilitating subsequent functional upgrades, such as adding more power modules or sensors. The independent design of the second electronic component 320 further optimizes space utilization, maximizing the volume of the battery cell 200. Simultaneously, the physical isolation design of the first output terminal 330 and the second output terminal 340 ensures clear current paths and modular expansion capabilities. Through structural decoupling and path optimization, a comprehensive improvement in battery capacity, stability, and scalability is achieved.
[0047] Continue to refer to Figure 1 Based on the above embodiments, in one possible implementation, the flexible circuit board 300 may have a first portion 350 and a second portion 360. The first portion 350 is located within the head packaging region, while the second portion 360 extends beyond the head packaging region. In this embodiment, the first electronic component 310 may be disposed in the first portion 350, while the second electronic component 320, the first output terminal 330, and the second output terminal 340 may be disposed in the second portion 360. This partitioned layout ensures that only necessary signal connections or the first electronic component 310 are retained within the head packaging region, while power output and main functional modules are relocated outside the head region of the battery cell 200.
[0048] In this embodiment, it is understood that space utilization is further optimized through physical partitioning. The head packaging area only accommodates the thinner or smaller first electronic component 310, thereby minimizing the head packaging size. The second portion 360 extends to non-packaged areas such as the side or tail of the battery cell 200, providing ample space for the second electronic component 320, the first output terminal 330, and the second output terminal 340. Simultaneously, the placement of the first output terminal 330 and the second output terminal 340 away from the head packaging area facilitates internal wiring and reduces electromagnetic interference caused by wire crossings.
[0049] Based on the above embodiments, the first electronic component 310 may include a protection module circuit or a fuel gauge module circuit. It is understood that the protection module circuit can be used to monitor abnormal states of the battery cell 200 such as overcharge, over-discharge, overcurrent, and short circuit. The fuel gauge module circuit can be used to accurately calculate the remaining charge and health status of the battery cell 200. These modules typically need to acquire voltage, current, and temperature signals between the electrodes; therefore, arranging the first electronic component 310 in the flexible circuit board 300 area between the first electrode 210 and the second electrode 220 has a natural advantage in signal acquisition.
[0050] In this embodiment, the protection module circuit or the fuel gauge module circuit is positioned between the first tab 210 and the second tab 220, enabling the module to directly and closely acquire the differential signal and loop current between the two poles of the battery cell 200, thus improving monitoring accuracy and response speed. Simultaneously, since these modules do not carry the charging and discharging current of the main circuit, their own heat generation is extremely low, and their proximity to the battery cell 200 will not affect thermal management. Specifically, the placement of the protection module circuit or the fuel gauge module circuit avoids thermal interference from power devices, which is beneficial for their stable operation.
[0051] Based on the above embodiments, the second electronic component 320 may include a power switch module. It is understood that the power switch module typically includes switching devices such as transistors and relays, and is used to control the on / off state of the battery's charging and discharging circuit, performing the main circuit switching function in the battery protection board. The power switch module can be located outside the head packaging area of the cell 200, for example, on the side or tail of the cell 200, physically separate from the first electronic component 310.
[0052] In this embodiment, it is understood that placing the power switch module in the non-head packaging area, away from the head sealing structure and other sensitive circuits of the cell 200, facilitates the dissipation of the large amount of heat generated by the power switch module during operation through a larger surface area or additional heat dissipation structure, preventing heat from being concentrated on the head of the cell 200 or the first electronic component 310. Simultaneously, the separation of the power switch module from the first electronic component 310 reduces the interference of high-frequency switching noise on the protection module circuit or the fuel gauge module circuit, improving the electromagnetic compatibility and reliability of the entire battery management system.
[0053] refer to Figure 1 Based on the above embodiments, in one possible implementation, the power switch module may include a first module circuit 321 and a second module circuit 322.
[0054] In this design, on the flexible circuit board 300, the first module circuit 321 can be arranged close to the first tab 210, and the first output terminal 330 is disposed on the side of the first module circuit 321 close to the first tab 210. Correspondingly, the second module circuit 322 can be arranged close to the second tab 220, and the second output terminal 340 is disposed on the side of the second module circuit 322 close to the second tab 220.
[0055] The first electronic component 310 can be connected between the first module circuit 321 and the second module circuit 322, and the two ends of the first electronic component 310 can be electrically connected to the first module circuit 321 and the second module circuit 322 respectively.
[0056] In this embodiment, it is understood that the symmetrical layout results in an extremely short main circuit current path. The current flows from the first tab 210 through the first output terminal 330, passes through the first module circuit 321, enters the first electronic component 310, and then returns to the second tab 220 via the second module circuit 322 and the second output terminal 340. In effect, the main current completely bypasses the "tab—output terminal—power module" path, with the first electronic component 310 only connected via signal lines. This ensures the power switch module's control over the main circuit while preventing the main current from passing through the first electronic component 310. Furthermore, the symmetrical structure ensures uniform heat distribution across the positive and negative half-cycles, which is beneficial for the thermal stress balance and long-term reliability of the flexible circuit board 300.
[0057] refer to Figure 2 Based on the above embodiments, in another possible implementation, the power switch module may include a first power module circuit 323 and a second power module circuit 324.
[0058] The flexible circuit board 300 is arranged in a flat manner. The first power module circuit 323 and the second power module circuit 324 can be respectively disposed at both ends of the flexible circuit board 300 along its length. The first power module circuit 323 can be disposed near the first tab 210, and the first output terminal 330 is disposed on the side of the first power module circuit 323 near the first tab 210. Correspondingly, the second power module circuit 324 can be disposed near the second tab 220, and the second output terminal 340 is disposed on the side of the second power module circuit 324 near the second tab 220.
[0059] The first electronic component 310 can be connected between the first power module circuit 323 and the second power module circuit 324, and the two ends of the first electronic component 310 can be electrically connected to the first power module circuit 323 and the second power module circuit 324 respectively.
[0060] In this embodiment, it is understood that the flat arrangement simplifies the manufacturing and assembly process of the flexible circuit board 300, facilitating automated surface mount and soldering. The separate design of the power module circuits at both ends allows each power module to be independently located near its corresponding tab and output terminal, further shortening the main circuit trace length. The first electronic component 310, located in the middle, can uniformly receive signals from the power module circuits at both ends, and is also conveniently connected to the mainboard of the entire device via the extension of the flexible circuit board 300. The overall structure is compact and easy to install in electronic devices.
[0061] refer to Figure 3 Based on the above embodiments, in another possible implementation, the power switch module may include a first power module circuit 323, a second power module circuit 324, a first reinforcement structure 325, and a second reinforcement structure 326.
[0062] In this design, on the flexible circuit board 300, the first power module circuit 323 and the second power module circuit 324 can be respectively disposed on both sides of the first electronic component 310 along its length. The first power module circuit 323 can be arranged closer to the first tab 210, and the first output terminal 330 is disposed on the side of the first power module circuit 323 closest to the first tab 210. Correspondingly, the second power module circuit 324 can be arranged closer to the second tab 220, and the second output terminal 340 is disposed on the side of the second power module circuit 324 closest to the second tab 220. Furthermore, the first reinforcing structure 325 can be disposed at the end of the first power module circuit 323 furthest from the first electronic component 310, and the second reinforcing structure 326 can be disposed at the end of the second power module circuit 324 furthest from the first electronic component 310.
[0063] For example, the reinforcing structure can be made of rigid materials such as BTB, FR4, steel sheet or polyimide, and is disposed at both ends of the flexible circuit board 300.
[0064] In the embodiments of this application, it is understood that the reinforcing structure provides mechanical support for the power module circuit area, preventing damage to solder joints and circuits when plugging or unplugging output terminals or bending the flexible circuit board 300. Since power modules typically contain large switching transistors and heat dissipation pads, the reinforcing structure also assists in heat dissipation, conducting the heat generated by the power module to a larger area or the device frame. Simultaneously, the reinforcing structure is located at both ends of the flexible circuit board 300, ensuring the entire assembly maintains shape stability during assembly, facilitating automated positioning and soldering, improving production yield, and enhancing fatigue resistance over long-term use.
[0065] Continue to refer to Figure 1 Based on the above embodiments, in one possible implementation, the first output terminal 330 and the second output terminal 340 are isolated from each other and output positive current and negative current independently, respectively.
[0066] In the embodiments of this application, it is understood that the mutually isolated first output terminal 330 and second output terminal 340 avoid the possibility of accidental short circuits between the positive and negative terminals at the output terminals, thereby improving the safety of the battery structure 100 during assembly and use. Independent outputs also allow for individual optimization of the current-carrying capacity of each output terminal. Furthermore, the isolation of the first output terminal 330 and second output terminal 340 facilitates a dual-terminal connection design for the entire motherboard, enabling more flexible internal power wiring and reducing loop resistance and voltage drop.
[0067] Based on the above embodiments, in one possible implementation, the flexible circuit board 300 can be electrically connected to the mainboard circuitry via signal pins. In this embodiment, it is understood that the signal pins can be used to transmit monitoring signals from the first electronic component 310.
[0068] In this embodiment, it is understood that by using independent signal pins to transmit monitoring signals, complete separation of power transmission and signal transmission is achieved, avoiding interference from the large charging and discharging current on the common connector to the weak monitoring signal. The mainboard can read data such as voltage, temperature, and remaining capacity of the battery cell 200 in real time through the signal pins without going through the battery's power circuit, thereby improving the accuracy of the fuel gauge and protection logic. At the same time, the independence of the signal pins also allows for wider and shorter power traces on the flexible circuit board 300, further reducing on-resistance and heat generation.
[0069] A second aspect of this application provides an electronic device (not shown in the figures). The electronic device may include the battery structure 100 described above. In this application embodiment, the electronic device may be a portable or mobile device such as a smartphone, tablet, laptop, smartwatch, drone, or power tool, and its internal motherboard is provided with power management circuitry and interfaces that match the output terminals and signal pins of the battery structure 100.
[0070] In the embodiments of this application, it is understood that by adopting the battery structure 100 provided in this application embodiment, the electronic device can achieve a higher battery capacity within the same overall volume, thereby extending the battery life. Simultaneously, with the head space of the battery structure 100 freed up, the electronic device can be designed with a more compact stacking structure, such as moving the motherboard, speaker, or camera module towards the head, optimizing the internal layout. Furthermore, when the battery is operating, the heat generated by the power switching module is moved away from the head of the battery cell 200 and the signal lines, resulting in a more uniform temperature distribution on the outer casing of the electronic device, improving the user's grip experience and the long-term reliability of the system.
[0071] In this embodiment, the battery structure 100 significantly reduces the space occupied at the battery head by relocating the first electronic component 310 from the battery head packaging area to the flexible circuit board 300 carrier between the first tab 210 and the second tab 220, and arranging the second electronic component 320 in the non-packaging area, thereby freeing up the extension space of the cell 200 and increasing the overall battery capacity. The charging and discharging current flows directly through the flow between the first tab 210 and the first output terminal 330 and the flow between the second tab 220 and the second output terminal 340, bypassing the first electronic component 310, avoiding local temperature rise caused by high current load, reducing the risk of module overheating, and improving the long-term stability of the battery system.
[0072] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
[0073] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0074] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0075] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0076] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0077] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A battery structure, characterized in that, include: A battery cell (200) having a first tab (210) and a second tab (220); A flexible circuit board (300) is provided with a first electronic component (310) and a second electronic component (320). The first electronic component (310) is located between the first tab (210) and the second tab (220), and the second electronic component (320) is located outside the head packaging area of the battery cell (200). The first electronic component (310) and the second electronic component (320) are electrically connected through signal lines on the flexible circuit board (300). The flexible circuit board (300) is also provided with a first output terminal (330) and a second output terminal (340). The first tab (210) is electrically connected to the first output terminal (330) to form a first connection circuit, and the second tab (220) is electrically connected to the second output terminal (340) to form a second connection circuit. Neither the first connection circuit nor the second connection circuit passes through the first electronic component (310).
2. The battery structure according to claim 1, characterized in that, The flexible circuit board (300) has a first portion (350) located within the head packaging area and a second portion (360) extending out of the head packaging area. The first electronic component (310) is disposed in the first portion (350), and the second electronic component (320), the first output terminal (330), and the second output terminal (340) are disposed in the second portion (360).
3. The battery structure according to claim 2, characterized in that, The first electronic component (310) includes a protection module circuit or a power meter module circuit.
4. The battery structure according to claim 3, characterized in that, The second electronic component (320) is a power switch module.
5. The battery structure according to claim 4, characterized in that, The power switch module includes a first module circuit (321) and a second module circuit (322); On the flexible circuit board (300), the first module circuit (321) is arranged near the first tab (210), and the first output terminal (330) is disposed on the side of the first module circuit (321) near the first tab (210). The second module circuit (322) is arranged near the second tab (220), and the second output terminal (340) is disposed on the side of the second module circuit (322) near the second tab (220). The first electronic component (310) is connected between the first module circuit (321) and the second module circuit (322), and the two ends of the first electronic component (310) are electrically connected to the first module circuit (321) and the second module circuit (322) respectively.
6. The battery structure according to claim 4, characterized in that, The power switch module includes a first power module circuit (323) and a second power module circuit (324); The flexible circuit board (300) is arranged in a straight line, and the first power module circuit (323) and the second power module circuit (324) are respectively disposed at both ends of the length direction of the flexible circuit board (300); The first electronic component (310) is connected between the first power module circuit (323) and the second power module circuit (324), and the two ends of the first electronic component (310) are electrically connected to the first power module circuit (323) and the second power module circuit (324) respectively.
7. The battery structure according to claim 4, characterized in that, The power switch module includes a first power module circuit (323), a second power module circuit (324), a first reinforcement structure (325), and a second reinforcement structure (326). On the flexible circuit board (300), the first power module circuit (323) and the second power module circuit (324) are respectively disposed on both sides of the length direction of the first electronic component (310), the first reinforcing structure (325) is disposed at the end of the first power module circuit (323) away from the first electronic component (310), and the second reinforcing structure (326) is disposed at the end of the second power module circuit (324) away from the first electronic component (310).
8. The battery structure according to any one of claims 1-7, characterized in that, The first output terminal (330) and the second output terminal (340) are isolated from each other and output positive current and negative current independently, respectively.
9. The battery structure according to any one of claims 1-7, characterized in that, The flexible circuit board (300) is electrically connected to the main board circuitry via signal pins, which are used to transmit monitoring signals from the first electronic component (310).
10. An electronic device, characterized in that, The battery structure (100) includes any one of claims 1-9 above.