A mobile power supply

Abstract

This invention provides a portable power bank. The portable power bank includes: a housing having opposing inner and outer wall surfaces, the inner wall surface forming a receiving cavity; a battery disposed within the receiving cavity; a pressure detection module disposed between the battery and the inner wall surface; and a comparison module electrically connected to the pressure detection module. The comparison module is configured to receive a pressure value detected by the pressure detection module, compare the pressure value with a preset reference threshold, and generate and output a prompt signal based on the comparison result. This invention enables the portable power bank to detect the pressure caused by battery bulging through a pressure detection module disposed between the battery and the inner wall surface of the housing, and compares the pressure value with a preset reference threshold using a comparison module. This allows for early and proactive detection of the safety hazard of battery bulging in the portable power bank, thereby greatly improving the safety and reliability of the portable power bank.

Description

Technical Field

[0001] This invention relates to the field of electronic device technology, and more particularly to a portable power supply. Background Technology

[0002] With the widespread use of smart mobile devices, power banks have become an indispensable accessory in people's daily lives. However, the batteries in power banks will age after long-term use, and the internal chemical reactions may produce byproduct gases, leading to increased internal pressure and causing the battery to bulge (also known as swelling).

[0003] Most portable power banks on the market currently only have basic overvoltage, overcurrent, and short-circuit protection functions, which cannot effectively deal with the slow-developing problem of battery bulging. Users can usually only passively discover bulging by visual inspection or by touching the deformation of the casing, but by this time the battery is often already severely bulging, and the safety risk has greatly increased. Summary of the Invention

[0004] This invention provides a portable power bank that aims to solve the technical problem that existing portable power banks cannot detect battery bulging in a timely manner.

[0005] The present invention is implemented as follows: the portable power supply of the present invention includes: a housing having opposing inner and outer wall surfaces, the inner wall surface forming a receiving cavity; a battery disposed within the receiving cavity; a pressure detection module disposed between the battery and the inner wall surface; and a comparison module electrically connected to the pressure detection module, the comparison module being configured to receive the pressure value detected by the pressure detection module, compare the pressure value with a preset reference threshold, and generate and output a prompt signal based on the comparison result.

[0006] Furthermore, the prompt signal includes a safety signal, a warning signal, and a bulge signal; there are multiple pressure detection modules, and the comparison module is electrically connected to each of the multiple pressure detection modules; the comparison module is also configured to output the safety signal when each of the received pressure values ​​is less than the reference threshold; the comparison module is also configured to generate the warning signal output when at least one of the received pressure values ​​is greater than or equal to the reference threshold.

[0007] Furthermore, it also includes: a timing module electrically connected to the comparison module; when any of the received pressure values ​​is greater than or equal to the reference threshold, the comparison module generates a timing signal and outputs it to the timing module, the timing module starts timing, and when the timing time is greater than a preset time threshold, the timing module generates a timeout signal and outputs it to the comparison module; the comparison module generates and outputs the prompt signal according to the number of timeout signals.

[0008] Furthermore, the comparison module is also configured to generate and output the bulge signal when it receives two or more timeout signals.

[0009] Furthermore, it also includes: a cut-off module electrically connected to the comparison module; the cut-off module is configured to cut off the output path of the battery when it receives a bulging signal output by the comparison module.

[0010] Furthermore, it also includes: a recovery module, electrically connected to the cut-off module and the comparison module respectively; the recovery module is configured to receive the prompt signal from the comparison module, and generate a conduction signal and output it to the cut-off module when the warning signal or the safety signal is received; the cut-off module is also configured to maintain or restore the output path of the battery when the conduction signal is received.

[0011] Furthermore, the comparison module is also configured to generate a reset signal to eliminate the corresponding timeout signal when any pressure value greater than or equal to the reference threshold falls below the reference threshold; or, the comparison module outputs the reset signal to the timing module, and the timing module resets the corresponding timing time to zero.

[0012] Furthermore, it also includes: a position determination module electrically connected to the comparison module; the position determination module is configured to receive the bulge signal and the warning signal output by the comparison module, and generate position information indicating the location of the bulge based on the identifier of the specific pressure detection module that triggered the warning signal or the bulge signal.

[0013] Furthermore, there are multiple pressure detection modules; each pressure detection module overlaps with the orthographic projection of the battery onto the inner wall surface.

[0014] Furthermore, the battery includes: an electrode and a main body, the electrode being located at an end of the main body; the battery having a length direction and a width direction, the main body having a first central axis in the length direction and a second central axis in the width direction; at least one of the pressure detection modules overlaps with the projection of the electrode on the inner wall surface; and / or, at least one of the pressure detection modules overlaps with the projection of the first central axis or the second central axis on the inner wall surface.

[0015] The portable power bank of this invention detects the pressure generated by battery bulging through a pressure detection module disposed between the battery and the inner wall of the casing, and compares it with a preset reference threshold using a comparison module. This enables early and proactive detection of the safety hazard of battery bulging in the portable power bank, avoiding the lag of traditional solutions that rely on passive discovery by users (visual observation or touch deformation). It can monitor the bulging of the battery in the portable power bank in a timely manner, thereby greatly improving the safety and reliability of the portable power bank.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the module structure connection in the power bank provided in the embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the mobile power supply provided in an embodiment of the present invention;

[0019] Figure 3 This is an exploded structural diagram of the mobile power supply provided in an embodiment of the present invention;

[0020] Figure 4 This is a partial structural schematic diagram of the mobile power supply provided in an embodiment of the present invention;

[0021] Figure 5 This is another structural schematic diagram of the mobile power supply provided in the embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of another part of the structure of the mobile power supply provided in the embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of a mobile power supply provided in another embodiment of the present invention.

[0024] Key component symbols: 11. Outer wall surface; 12. Inner wall surface; 13. Receiving cavity; 20. Battery; 30. Pressure detection module; 40. Circuit board; 60. Indication module; 21. Electrode; 22. Main body; 23. First central axis; 24. Second central axis; 410. Comparison module; 420. Timing module; 430. Cut-off module; 440. Recovery module; 450. Position determination module. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Furthermore, it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "top", "bottom", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0031] Please see Figures 1 to 6 This application provides a portable power bank for charging electronic devices. The portable power bank includes a housing, a battery 20, a pressure detection module 30, and a comparison module 410.

[0032] The housing is the main structure of the power bank. As a specific example, in this embodiment, the housing is generally rectangular. In other embodiments, the housing can also be generally cubic, cylindrical, or any other shape, and there is no limitation thereto. The housing has opposing inner wall surfaces 12 and outer wall surfaces 11. The inner wall surfaces 12 enclose a receiving cavity 13, which is a cavity located inside the housing and is used to accommodate other structures of the power bank disposed inside the housing.

[0033] The battery 20 is housed within the receiving cavity 13 and is used to electrically connect to the data cable to power external electronic devices. The number of batteries 20 can be set according to actual needs, for example, it can be set to 1, 2, 3, 4, 5, 6... to form power banks of different capacities. The data cable can be built into the power bank itself or be externally connected, and there is no limitation here.

[0034] A pressure detection module 30 is provided between the battery 20 and the inner wall surface 12. Specifically, the pressure detection module 30 can be located on the inner wall surface 12, and when the power bank is in its initial state, the pressure detection module 30 is spaced apart from the battery 20. When the battery 20 bulges, the pressure detection module 30 senses the pressure from this deformation and detects the pressure value exerted by the battery 20 on the pressure detection module 30. Specifically, the pressure detection module 30 can be a pressure sensor.

[0035] The power bank also includes a comparison module 410, which is electrically connected to the pressure detection module 30. The comparison module 410 is configured to receive the pressure value detected by the pressure detection module 30, compare the pressure value with a preset reference threshold, and generate and output a prompt signal based on the comparison result. Specifically, the comparison module 410 can be located on a circuit board 40 within the power bank's housing cavity 13. The comparison module 410 can be a control chip, or it can be a module within the control chip.

[0036] In this way, the pressure detection module 30, which is set between the battery 20 and the inner wall surface 12 of the casing, detects the pressure generated by the bulging of the battery 20, and compares it with the preset reference threshold by the comparison module 410. This enables early and proactive detection of the safety hazard of the battery 20 bulging in the power bank, avoiding the lag of traditional solutions that rely on passive discovery by users (visual observation or touch deformation). It can monitor the bulging of the battery 20 in the power bank in a timely manner, thereby greatly improving the safety and reliability of the power bank.

[0037] It is understandable that the comparison module 410, cut-off module 430, timing module 420, position judgment module 450 and recovery module 440 in the power bank constitute the battery 20 bulging detection system in the power bank.

[0038] Specifically, the preset reference threshold can be from 5N to 80N. For example, it can be 30N, 40N, 50N, 60N, 80N, 100N, 120N, 150N, 180N, 200N, 230N, 250N, etc., without any restrictions.

[0039] Understandably, the preset reference thresholds of 5N to 80N are designed to distinguish between acceptable deformation and potentially risky deformation of battery 20. Setting the lower limit of the reference threshold to 5N indicates that even if battery 20 experiences slight deformation due to electrochemical characteristics, temperature fluctuations, or normal lifespan degradation, it is still within the safe range allowed by the design. Moreover, setting the lower limit of the reference threshold to 5N aims to capture the initial signals of abnormal battery health, even minute and invisible deformations can be detected, thus alerting users at the nascent stage of potential risks and avoiding false alarms caused by daily use.

[0040] Understandably, setting the upper limit of the reference threshold to 80N can cover the development stages of bulging from mild to moderate, ensuring that intervention can be carried out before the pressure inside the battery 20 accumulates to the point that it may cause more serious safety issues (such as pressure damage to the electrodes or casing rupture).

[0041] Specifically, the comparison module 410 is electrically connected to the pressure detection module 30. After the pressure detection module 30 detects the corresponding pressure value, it can output the detected pressure value to the comparison module 410. The comparison module 410 can receive the pressure value, compare the received pressure value with a preset reference threshold, and generate and output a prompt signal based on the comparison result.

[0042] It is understandable that there may be multiple comparison results. For example, the pressure value may be greater than the reference threshold, the pressure value may be equal to the reference threshold, or the pressure value may be equal to the reference threshold. The comparison module 410 can output prompt signals containing different information based on different comparison results.

[0043] The pressure detection module 30 can be one or more. Similarly, the comparison module 410 can receive one or more pressure values. When the comparison module 410 receives multiple pressure values, it can compare each pressure value with a reference threshold and output a corresponding prompt signal.

[0044] For example, the comparison module 410 may be a chip of model CSU8RP3119, HC32L130, IP5209S, BU7250G or LM2903, without limitation.

[0045] For example, the comparison module 410 may also be a module of a chip of model IP5385, CSU8RP3119, SW6308, PM32F411, SW6308 or PT32L031, without limitation.

[0046] Specifically, the prompt signal generated by the comparison module 410 can be output to interact with the user, so that the user can know the swelling status of the battery 20 in the power bank in a timely manner.

[0047] Furthermore, the pressure detection module 30 can output the pressure value to the comparison module 410 via Bluetooth communication, wireless communication or electrical connection communication.

[0048] For example, the prompt signal output by the comparison module 410 can be output to the prompt module 60 of the power bank itself, such as a buzzer, display panel, indicator light, etc. The prompt module 60 responds to different prompt signals to provide feedback to the user in a prompting manner.

[0049] For example, the prompt signal output by the comparison module 410 can also be output to the user's mobile device. The user can then receive and view specific warning messages, the bulging status of the battery 20, and suggested operations on the mobile device, achieving remote monitoring and intelligent reminders.

[0050] For example, the prompt signal output by the comparison module 410 can also be output to the cloud server of the power bank supplier. The supplier can then use the cloud server to analyze, store, and track the received battery 20 bulging status, thereby enabling fault prediction, big data analysis, or proactive customer service support.

[0051] In one possible implementation, the prompt signals include a safety signal, a warning signal, and a bulge signal; there are multiple pressure detection modules 30, and the comparison module 410 is electrically connected to all of the multiple pressure detection modules 30; the comparison module 410 is also configured to output a safety signal when each received pressure value is less than a reference threshold.

[0052] Thus, the present invention can subdivide the prompt signal into multiple levels of signals, namely "safety signal, warning signal and bulging signal", so as to more accurately convey the bulging status of the battery 20, so that users or devices can take different countermeasures according to different levels of signals, thereby improving the precision of battery 20 safety management in the power bank.

[0053] For example, the prompt signal may specifically include safety information indicating that the battery 20 has not bulged or the bulging is slight, the battery 20 is currently in a safe state and can be used normally.

[0054] For example, the warning signal may specifically include a bulge indicating that the battery 20 may have a potential safety hazard.

[0055] For example, the warning signal may specifically include a bulge signal indicating that the battery 20 has developed a bulge that poses a safety hazard and that continued use would pose a safety hazard.

[0056] Specifically, the number of pressure detection modules 30 can be set to multiple, and each pressure detection module 30 is electrically connected to the comparison module 410. When each pressure detection module 30 detects a pressure value, it sends the detected pressure value to the comparison module 410. The comparison module 410 compares each received pressure value with a preset reference threshold to obtain a comparison result.

[0057] It is understandable that the bulging of battery 20 may not occur uniformly, but may only begin in a localized area (e.g., near the edge of electrode 21 or in a defective cell). If there is only one pressure detection module 30, and this pressure detection module 30 happens not to be installed at the location of the bulge, monitoring may fail. In this embodiment, a distributed layout of multiple pressure detection modules 30 forms a "monitoring network," which greatly increases the probability of capturing localized bulging of battery 20, thereby improving the reliability of monitoring battery 20 bulging.

[0058] The comparison module 410 is also configured to output a safety signal when each received pressure value is less than a reference threshold.

[0059] It can be understood that when the pressure value output by each pressure detection module 30 is less than the reference threshold, it indicates that the battery 20 is in good condition, and the comparison module 410 outputs a safety signal.

[0060] The comparison module 410 is also configured to generate a warning signal output when at least one pressure value is received that is greater than or equal to a reference threshold.

[0061] It is understandable that an abnormally high pressure value detected by a pressure detection module 30 may indicate local deformation of the battery 20, suggesting a possible bulge. However, since a sudden increase in pressure at a single point may also originate from external compression or instantaneous temperature changes, it is insufficient to definitively determine whether the bulge is caused by the battery 20. Therefore, when the comparison module 410 in this application identifies at least one abnormal pressure signal, it prioritizes issuing a warning signal rather than directly determining a fault, thereby improving the accuracy of bulge detection.

[0062] Furthermore, in this application, when at least one pressure value is received that is greater than or equal to a reference threshold, a warning signal is generated and output. This means that once the local pressure of the battery 20 reaches or exceeds the preset safety boundary, it is determined that the battery 20 is at risk of bulging. Although the anomaly of single-point data originates from the probability of instantaneous external interference, for the sake of the highest safety principle, the comparison module 410 will immediately activate the warning to prompt the user to pay attention to potential risks, thereby achieving proactive protection.

[0063] In one possible implementation, such as Figure 7 As shown, the power bank also includes a prompting module 60. The prompting module 60 is disposed on the outer wall surface 11, and is electrically connected to the comparison module 410. The prompting module 60 is configured to receive prompting signals and provide prompts for the information corresponding to the prompting signals.

[0064] Specifically, the prompting module 60 may include a display panel, indicator lights, or a buzzer. For example, when the comparison signal outputs a safety signal, the indicator light turns green; when the comparison signal outputs a warning signal, the indicator light turns yellow; and when the comparison signal outputs a bulging signal, the indicator light turns red.

[0065] In this way, the prompt module 60 directly converts the internal judgment results (safe, warning, danger) of the comparison module 410 into user-readable information, providing clear and intuitive status feedback. This allows users to understand the safety status of the power bank device immediately and take appropriate actions based on the prompts, enhancing the safety of the power bank and the user experience.

[0066] like Figure 4 and Figure 5 As shown, in one possible implementation, there are multiple pressure detection modules 30; each pressure detection module 30 overlaps with the orthographic projection of the battery 20 onto the inner wall surface 12. This ensures that each pressure sensing module is located within the projection area of ​​the battery 20 onto the inner wall of the housing, guaranteeing that each pressure sensing module can directly and effectively sense the pressure generated when the battery 20 bulges. This avoids monitoring failures caused by pressure sensing modules being placed in ineffective areas, ensuring the reliable implementation of the pressure sensing module function.

[0067] Specifically, "the projection of battery 20 onto inner wall surface 12" can refer to the area covered by the orthographic projection of battery 20 onto inner wall surface 12, that is, the geometric projection area obtained by projecting battery 20 along a direction perpendicular to inner wall surface 12 with inner wall surface 12 as the projection surface.

[0068] like Figures 4 to 6 As shown, in one possible embodiment, the battery 20 includes: an electrode 21 and a main body 22, with the electrode 21 located at the end of the main body 22; the battery 20 has a length direction and a width direction, and the main body 22 has a first central axis 23 in the length direction and a second central axis 24 in the width direction; at least one pressure detection module 30 overlaps with the orthographic projection of the electrode 21 onto the inner wall surface 12; and / or, at least one pressure detection module 30 overlaps with the orthographic projection of the first central axis 23 or the second central axis 24 onto the inner wall surface 12. Further, the first central axis 23 extends along the length direction, and the second central axis 24 extends along the width direction.

[0069] Understandably, the middle section of battery 20 and electrode 21 are concentrated areas of internal chemical reactions, often the starting points for malfunctions and bulging. This application incorporates at least one pressure detection module 30 specifically for monitoring these critical areas, enabling targeted and enhanced monitoring of key regions of battery 20, which helps to detect bulging earlier and more sensitively.

[0070] In one possible implementation, the power bank also includes a location determination module 450. The location determination module 450 is electrically connected to the comparison module 410; the location determination module 450 is configured to receive the bulging signal and warning signal output by the comparison module 410, and generate location information indicating the location of the bulging based on the identifier of the specific pressure detection module 30 that triggered the warning signal or bulging signal. Thus, by coordinating the pressure detection module 30 and the location determination module 450, a preliminary location of the bulging position of the battery 20 can be achieved, rather than simply judging the bulging phenomenon. This significantly improves the maintainability and safety of the power bank—users or repair personnel can quickly locate the fault point based on the location information and take targeted measures. At the same time, this information also helps power bank manufacturers summarize common bulging locations of the battery 20. For example, if the battery 20 of a certain model frequently reports bulging at the same location, the manufacturer can specifically strengthen the structural design or heat dissipation path at that location.

[0071] Specifically, the identifier (ID) of each pressure detection module 30 can be pre-assigned to its specific location. A mapping relationship between the identifier and the specific location of each pressure detection module 30 is established in advance. Furthermore, the pressure value output by each pressure detection module 30 includes its identifier. Therefore, the subsequent location determination module 450 can directly obtain the specific location of the corresponding pressure detection module 30 by reading its identifier.

[0072] For example, the position determination module 450 can be a chip with model numbers IP5362, AH463, or LM224DR2G, and there is no limitation on it.

[0073] For example, the position determination module 450 may also be a module of a chip with model numbers IP5385, CSU8RP3119, PM32F411, SW6308 or PT32L031, without limitation.

[0074] In one possible implementation, the power bank further includes a timing module 420. The timing module 420 is electrically connected to the comparison module 410; when any received pressure value is greater than or equal to a reference threshold, the comparison module 410 generates a timing signal and outputs it to the timing module 420, the timing module 420 starts timing, and when the timing time exceeds a preset time threshold, the timing module 420 generates a timeout signal and outputs it to the comparison module 410; the comparison module 410 generates and outputs a prompt signal based on the number of timeout signals.

[0075] Thus, by setting a timing module 420, this embodiment of the application introduces a timing mechanism, ensuring that an abnormal pressure condition is only confirmed as a potential safety hazard bulge in the battery 20 after a certain period of time. This effectively filters out pressure fluctuations caused by brief compression, external impact, or instantaneous temperature changes, greatly reducing the false alarm rate of battery 20 bulge and enhancing the accuracy of battery 20 bulge detection.

[0076] Specifically, the timing module 420 can be located on the circuit board 40 in the power bank housing cavity 13. The timing module 420 can be a control chip, or it can be a module in the control chip, or it can be an electrical component controlled by the control chip.

[0077] It is understandable that power banks may encounter brief, non-destructive pressure changes during daily use. For example, a user might accidentally sit on the power bank, experience brief pressure from a heavy object in a backpack, or feel the impact of a fall from a height. Without the timing module 420, any of these brief overpressure events would immediately trigger a warning or alarm, leading to false positives. Frequent false positives would inconvenience the user experience. This application introduces "duration of time" as a criterion for judging abnormal bulging by setting the timing module 420. Only when the abnormal pressure (exceeding the threshold) persists for a certain period (exceeding the preset time threshold) is it confirmed as a genuine risk of bulging, rather than a momentary disturbance.

[0078] Specifically, the time threshold can be from 5 seconds to 30 seconds. For example, 5 seconds, 8 seconds, 10 seconds, 15 seconds, 20 seconds, 25 seconds, and 30 seconds are not limited here.

[0079] Understandably, most accidental impacts that power banks may encounter in daily life, such as falling from a table, being squeezed by items in a bag, or being briefly sat on, are typically short-lived, lasting only 1 to 3 seconds. Setting the time threshold to greater than 5 seconds provides a sufficient buffer for these transient events. Only pressure anomalies lasting longer than 5 seconds are more likely to originate from persistent bulging inside the battery 20, rather than from accidental external factors. This ensures a better user experience and the reliability of the bulging alarm.

[0080] Understandably, while battery swelling is a gradual process, intervention is still necessary in its early stages. Excessive delays (such as exceeding 30 seconds) could indicate the accumulation of potential risks. 30 seconds is a generally accepted upper limit for "instant feedback," ensuring users are promptly informed of risks and can take appropriate action.

[0081] Specifically, after receiving a pressure value greater than or equal to a reference threshold, the comparison module 410 in this application, in addition to sending a warning signal, also needs to determine whether the battery 20 has indeed developed a bulge posing a safety hazard. Therefore, it is necessary to confirm the bulging condition of the battery 20. After receiving a pressure value greater than or equal to the reference threshold, the comparison module 410 will output a timing signal to the timing module 420. For each pressure value greater than or equal to the reference threshold received, the comparison module 410 will send a corresponding timing signal to the timing module 420. That is, the number of pressure values ​​greater than or equal to the reference threshold received by the comparison module 410 will correspond to the number of timing signals generated and output to the timing module 420. Obviously, the number of pressure values ​​greater than or equal to the reference threshold is the same as the number of timing signals.

[0082] When the timing module 420 receives a timing signal, it starts timing. The timing module 420 counts the number of timing signals received. In some embodiments, the timing module 420 may include a timer.

[0083] In one possible implementation, the comparison module 410 is further configured to generate a reset signal to eliminate the corresponding timeout signal when any pressure value greater than or equal to the reference threshold falls below the reference threshold; alternatively, the comparison module 410 outputs a reset signal to the timing module 420, which then resets the corresponding timing time to zero. This avoids misjudgments caused by external force squeezing the battery 20, thus improving the accuracy of determining if the battery 20 is bulging.

[0084] It is understood that this application embodiment introduces a "state-reversible" control mechanism whereby the comparison module 410 generates and outputs a reset signal, enabling the comparison module 410 to dynamically respond to changing environmental conditions. Specifically, the configuration of the reset signal effectively prevents false alarms and premature alarms. When a brief external pressure (such as being pressed by a heavy object) causes the pressure to exceed the limit, the comparison module 410 will control the comparison module 410 to start a timer to prepare for a bulging alarm; however, if the pressure is quickly released (the pressure value drops), the comparison module 410 can "eliminate" this accidental event, output a reset signal, and reset the bulging alarm process. This ensures that only persistent pressure anomalies (such as actual battery 20 bulging) will ultimately trigger the bulging alarm, thereby avoiding frequent alarm triggers due to unintentional errors in daily use, improving the accuracy of battery 20 bulging judgment, and thus ensuring user experience and the reliability of the bulging alarm.

[0085] Specifically, in this application, the reset signal has two control methods. One control method is for the "alarm generated" state: when the pressure abnormality lasts for a sufficiently long time, the timing module 420 has completed timing and generated an overdue signal, and this signal has been sent to the comparison module 410, which has output a warning signal or a bulging signal. At this time, if the external pressure is released or the bulging risk is unexpectedly eliminated (manifested as the abnormal pressure value falling back below the reference threshold), the reset signal generated by the comparison module 410 will act as an "alarm clearing" command. The function of the reset signal can be to directly cancel or invalidate the previous overdue signal.

[0086] The second control method addresses the situation where "an alarm has not been generated, but the timer has started": when the duration of the pressure anomaly is insufficient, the timer module 420 has not yet reached the time threshold and has not generated a timeout signal. If the pressure value drops at this time, the reset signal output by the comparison module 410 is sent to the timer module 420 as an "emergency stop" command. The reset signal immediately terminates the ongoing timer process of the timer module 420 and resets the accumulated time to zero. This completely resets the timer module 420, preparing it for the next possible pressure event, thus effectively filtering out brief pressure anomalies.

[0087] Therefore, by comparing the reset signal output by module 410, the system ensures that it has the corresponding reset capability throughout the entire timeline from the moment the pressure abnormality occurs to the alarm triggering (outputting a warning signal or a bulging signal). Regardless of the stage, as long as the pressure conditions return to normal, the system can immediately take the most appropriate action (either stop the timer or clear the alarm), thereby improving the reliability and certainty of the power bank's judgment on battery 20 bulging and providing dual protection for the power bank's safety and stability.

[0088] In one possible implementation, the comparison module 410 is further configured to generate and output a bulge signal upon receiving two or more timeout signals. This requires at least two different pressure detection modules 30 to continuously detect the anomaly (generate timeout signals) before a final determination of battery 20 bulging is made. This constitutes a "double confirmation" or "majority rule" mechanism, further eliminating misjudgments caused by single-point pressure detection module 30 malfunctions or local interference, making the generation of the bulge signal highly reliable, thereby ensuring user experience and the credibility of the bulge alarm.

[0089] Furthermore, the comparison module 410 is also configured to generate and output a warning signal when it receives one timeout signal. The comparison module 410 is also configured to generate and output a safety signal when it receives zero timeout signals.

[0090] Understandably, in practice, after the comparison module 410 has received two or more timeout signals and generated a bulge signal output, the pressure value detected by one or more pressure detection modules 30 may drop. This would cause the comparison module 410 to output one or more reset signals to eliminate the timeout signals, resulting in the number of timeout signals in the comparison module 410 decreasing from two or more to less than two. At this point, if the number of timeout signals received by the comparison module 410 is less than two, the comparison module 410 will cancel the already output timeout signals and generate a safety signal or warning signal output.

[0091] It is understood that in this application, the number of timeout signals "received" by the comparison module 410 is not the cumulative number of timeout signals, but rather the number of timeout signals that are currently active and have not been eliminated. The number of timeout signals "received" by the comparison module 410 will increase with the arrival of a new timeout signal and will decrease accordingly with the arrival of a reset signal.

[0092] In one possible implementation, the power bank further includes a cut-off module 430. The cut-off module 430 is electrically connected to the comparison module 410; the cut-off module 430 is configured to cut off the output path of the battery 20 upon receiving a bulging signal output by the comparison module 410. Thus, by configuring the cut-off module 430, the output path of the battery 20 can be automatically and proactively cut off after confirming a bulging hazard in the battery 20. This prevents potential dangers caused by the user continuing to use the power bank after a bulging signal is displayed, fundamentally avoiding the power bank operating with the battery 20 in a faulty state, and greatly improving the safety of the power bank.

[0093] Specifically, the cutting module 430 can be located on the circuit board 40 in the mobile power supply housing cavity 13. The cutting module 430 can be a control chip, or the comparison module 410 can be a module in the control chip, or the comparison module 410 can be an electrical component controlled by the control chip, or the comparison module 410 can be an electrical component controlled by the control chip.

[0094] Furthermore, when the bulging signal is received, the cut-off module 430 can not only cut off the output path of the battery 20, but also cut off the input path of the battery 20.

[0095] Specifically, the circuit for supplying power from battery 20 to external devices can be cut off by the disconnect module 430 to prevent battery 20 from becoming unstable or even thermally runaway due to discharge under load.

[0096] Specifically, the external power supply to the battery 20 can be cut off by the cut-off module 430 to prevent fire or explosion caused by continuing to charge the bulging battery 20.

[0097] For example, the cut-off module 430 may specifically include a switching transistor, such as a metal-oxide-semiconductor field-effect transistor.

[0098] In one possible implementation, the power bank further includes a recovery module 440. The recovery module 440 is electrically connected to both the cut-off module 430 and the comparison module 410. The recovery module 440 is configured to receive a prompt signal from the comparison module 410 and generate a conduction signal and output it to the cut-off module 430 upon receiving a warning signal or a safety signal. The cut-off module 430 is also configured to maintain or restore the output path of the battery 20 upon receiving the conduction signal. Thus, the recovery module 440 can automatically control the cut-off module 430 to restore power supply. Through the settings of the recovery module 440, the power bank can automatically resume operation from false protection without user intervention (such as plugging and unplugging to restart), avoiding unnecessary interruptions in use and ensuring both safety and normal operation.

[0099] Specifically, the recovery module 440 can be located on the circuit board 40 in the mobile power supply housing cavity 13. The recovery module 440 can be a control chip, or it can be a module in the control chip, or it can be an electrical component controlled by the control chip.

[0100] Specifically, the recovery module 440 can maintain a continuous communication connection with the comparison module 410 and continuously receive prompt signals from the comparison module 410. After receiving the conduction signal, the disconnection module 430 will restore or maintain the conduction of the battery 20 circuit.

[0101] Furthermore, if the comparison module 410 has previously output a bulging signal, causing the cut-off module 430 to cut off the output path of the battery 20, then after the comparison module 410 re-outputs a safety signal or warning signal, the recovery module 440 can act as an error correction module in the power bank, outputting a conduction signal to the cut-off module 430 so that the cut-off module 430 can restore the battery 20 output path that was cut off by the cut-off module 430.

[0102] Furthermore, if the output path of battery 20 is already in a conducting state, the recovery module 440 can output a conduction signal to the cut-off module 430 to keep the output path of battery 20 conducting.

[0103] Of course, when the prompt signal output by the comparison module 410 to the recovery module 440 is a bulging signal, the recovery module 440 will stop outputting the conduction signal to the cut-off module 430 so that the cut-off module 430 can cut off the output path of the battery 20.

[0104] For example, the recovery module 440 can be a circuit module consisting of basic logic gates (such as AND gates and OR gates).

[0105] For example, the recovery module 440 may also be a module of one of the chips with model numbers IP5385, CSU8RP3119, PM32F411, SW6308 or PT32L031, without limitation.

[0106] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0107] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A portable power bank, characterized in that, The portable power bank includes: A housing having opposing inner and outer wall surfaces, the inner wall surface forming a receiving cavity; A battery is disposed within the receiving cavity; the battery includes: electrodes and a main body portion, the electrodes being located at the ends of the main body portion; the battery has a length direction and a width direction, the main body portion having a first central axis in the length direction and a second central axis in the width direction; Multiple pressure detection modules are disposed between the battery and the inner wall surface; wherein at least one of the pressure detection modules overlaps with the projection of the electrode on the inner wall surface; and / or, at least one of the pressure detection modules overlaps with the projection of the first central axis or the second central axis on the inner wall surface; A comparison module, electrically connected to the plurality of pressure detection modules, is configured to receive pressure values ​​detected by the plurality of pressure detection modules, compare the pressure values ​​with a preset reference threshold, and generate and output a prompt signal based on the comparison result. The prompt signal includes a safety signal, a warning signal, and a bulge signal. Specifically, when each of the received pressure values ​​is less than the reference threshold, the safety signal is output; when at least one of the received pressure values ​​is greater than or equal to the reference threshold, the warning signal is generated and output. A timing module is electrically connected to the comparison module; when any of the received pressure values ​​is greater than or equal to the reference threshold, the comparison module generates a timing signal and outputs it to the timing module, the timing module starts timing, and generates a timeout signal and outputs it to the comparison module when the timing time is greater than a preset time threshold. The comparison module generates and outputs a prompt signal based on the number of timeout signals. Specifically, when receiving two or more timeout signals, it generates and outputs a bulge signal; when the number of timeout signals drops from two or more to less than two, it cancels the previously output bulge signal and generates a safety signal or warning signal. Wherein, when any pressure value greater than or equal to the reference threshold drops to less than the reference threshold, the comparison module generates a reset signal to eliminate the corresponding timeout signal, or the comparison module outputs the reset signal to the timing module, and the timing module resets the corresponding timing time to zero. The number of timeout signals received by the comparison module is the number of currently valid and uneliminated timeout signals. A cut-off module is electrically connected to the comparison module; the cut-off module is configured to cut off the output path of the battery when it receives a bulging signal output by the comparison module. A recovery module is electrically connected to both the cut-off module and the comparison module. The recovery module is configured to receive the prompt signal from the comparison module and generate a conduction signal and output it to the cut-off module upon receiving the warning signal or the safety signal. The cut-off module is also configured to maintain or restore the output path of the battery upon receiving the conduction signal. A position determination module is electrically connected to the comparison module; the position determination module is configured to receive the bulge signal and the warning signal output by the comparison module, and generate position information indicating the location of the bulge based on the identifier of the specific pressure detection module that triggered the warning signal or the bulge signal.

2. The portable power bank according to claim 1, characterized in that, Each of the pressure detection modules overlaps with the orthographic projection of the battery onto the inner wall surface.

Images