Mobile power supply

Abstract

The invention provides a mobile power supply. The mobile power supply comprises a shell, the shell is provided with an inner wall surface and an outer wall surface which are opposite, and an accommodating cavity is formed in the inner wall surface. The battery is arranged in the accommodating cavity; the pressure detection module is arranged between the battery and the inner wall surface; and the comparison module is electrically connected with the pressure detection module, and the comparison module is configured to receive the pressure value detected by the pressure detection module, compare the pressure value with a preset reference threshold value, generate a prompt signal according to a comparison result and output the prompt signal. According to the mobile power supply provided by the embodiment of the invention, the pressure generated by the bulge of the battery is detected through the pressure detection module arranged between the battery and the inner wall surface of the shell, and the pressure is compared with the preset reference threshold value by virtue of the comparison module, so that the potential safety hazard of the bulge of the battery in the mobile power supply can be actively detected in an early stage; therefore, the safety and reliability of the mobile power supply can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a mobile power supply. Background Art

[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 age over time, and their internal chemical reactions can produce byproduct gases, which can increase internal pressure and cause battery swelling (also known as swelling).

[0003] Most power banks currently on the market only offer basic overvoltage, overcurrent, and short-circuit protection, which are ineffective against slow-onset battery swelling. Users can typically only passively detect swelling by visual inspection or by feeling for deformation in the battery casing. However, by then, the battery is often already severely swollen, significantly increasing safety risks. Summary of the Invention

[0004] The present invention provides a mobile power supply, aiming to solve the technical problem in the prior art that the battery bulge cannot be detected in time in the mobile power supply.

[0005] The present invention is implemented as follows: the mobile power supply in an embodiment of the present invention includes: a shell, the shell having opposite inner and outer wall surfaces, the inner wall surface forming a accommodating cavity; a battery, arranged in the accommodating cavity; a pressure detection module, arranged between the battery and the inner wall surface; a comparison module, electrically connected to the pressure detection module, the comparison module is 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 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, which is electrically connected to the comparison module; when any one 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 the timeout signals.

[0008] Further, the comparison module is further configured to generate the bulge signal and output when receiving more than or equal to 2 timeout signals.

[0009] Further, the comparison module is further configured to generate the bulge signal and output when receiving more than or equal to 2 timeout signals.

[0010] Further, the comparison module is further configured to generate the bulge signal and output when receiving more than or equal to 2 timeout signals.

[0011] Further, the comparison module is further configured to generate the bulge signal and output when receiving more than or equal to 2 timeout signals.

[0012] Further, the comparison module is further configured to generate the bulge signal and output when receiving more than or equal to 2 timeout signals.

[0013] Further, the comparison module is further configured to generate the bulge signal and output when receiving more than or equal to 2 timeout signals.

[0014] Further, the comparison module is further configured to generate the bulge signal and output when receiving more than or equal to 2 timeout signals.

[0015] The mobile power supply of the embodiment of the present invention detects the pressure generated by battery bulging through a pressure detection module disposed between the battery and the inner wall surface of the housing, and compares the pressure with a preset reference threshold value through a comparison module, thereby enabling early and active detection of the safety hazard of battery bulging in the mobile power supply. This avoids the hysteresis of traditional solutions that rely on users' passive discovery (visual observation or touching deformation), and can timely monitor the bulging condition of the battery in the mobile power supply, thereby greatly improving the safety and reliability of the mobile power supply.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the module structure connection in the mobile power supply provided by an embodiment of the present invention; Figure 2 is a schematic structural diagram of a mobile power supply provided by an embodiment of the present invention; Figure 3 Schematic diagram of the exploded structure of a mobile power supply provided by an embodiment of the present invention; Figure 4 This is a schematic diagram of a portion of the structure of a mobile power supply provided by an embodiment of the present invention; Figure 5 is a schematic diagram of another portion of the structure of the mobile power supply provided by an embodiment of the present invention; Figure 6 This is another structural diagram of a mobile power supply provided by an embodiment of the present invention; Figure 7 It is a structural diagram of a mobile power supply provided by another embodiment of the present invention.

[0018] Explanation of the main component symbols: 11. Outer wall; 12. Inner wall; 13. Accommodating chamber; 20. Battery; 30. Pressure detection module; 40. Circuit board; 60. Prompt 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 judgment module. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. In addition, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "top", "bottom", "horizontal", "longitudinal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] 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 the technical features being referred to. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0024] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use scenarios of other materials.

[0025] See also Figures 1 to 6 The embodiment of the present application provides a mobile power supply for charging electronic devices. The mobile power supply includes a housing, a battery 20, a pressure detection module 30, and a comparison module 410.

[0026] The housing is the main structure of the power bank. As a specific example, in this embodiment, the housing is roughly rectangular. In other embodiments, the housing can also be roughly cube-shaped, cylindrical, or any other shape, without limitation. The housing has opposing inner and outer walls 12 and 11. The inner walls 12 enclose a housing cavity 13, which is located within the housing and is used to accommodate other components of the power bank.

[0027] A battery 20 is housed within the housing 13 and electrically connects to a data cable to power external electronic devices. The number of batteries 20 can be adjusted based on actual needs, for example, one, two, three, four, five, six, etc., to create a power bank with varying capacities. The data cable can be built into the power bank itself or externally connected, without limitation.

[0028] A pressure detection module 30 is provided between the battery 20 and the inner wall 12. Specifically, the pressure detection module 30 can be provided on the inner wall 12. 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 deformation and pressure of the battery 20 and detects the pressure generated by the battery 20 on the pressure detection module 30. Specifically, the pressure detection module 30 can be a pressure detection sensor.

[0029] 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. The comparison module 410 can be specifically disposed on the circuit board 40 in the power bank housing cavity 13. The comparison module 410 can specifically be a control chip, or the comparison module 410 can also be a module in the control chip.

[0030] In this way, the pressure generated by the bulging of the battery 20 is detected by the pressure detection module 30 arranged between the battery 20 and the inner wall surface 12 of the shell, and compared with the preset reference threshold value with the help of the comparison module 410, so that the safety hazard of the bulging of the battery 20 in the mobile power supply can be detected early and actively, avoiding the lag of the traditional solution that relies on the user's passive discovery (visual observation or touching the deformation), and can timely monitor the bulging condition of the battery 20 in the mobile power supply, thereby greatly improving the safety and reliability of the mobile power supply.

[0031] It can be understood that the comparison module 410 , the cut-off module 430 , the timing module 420 , the position determination module 450 and the recovery module 440 in the mobile power supply constitute a battery 20 bulge detection system in the mobile power supply.

[0032] Specifically, the preset reference threshold may be 5N to 80N, for example, 30N, 40N, 50N, 60N, 80N, 100N, 120N, 150N, 180N, 200N, 230N, 250N, etc., without limitation herein.

[0033] It is understandable that the preset reference threshold is 5N to 80N, which is intended to distinguish between acceptable deformation and potential risk deformation of the battery 20. Setting the lower limit of the reference threshold to 5N indicates that even if the battery 20 has slight deformation caused by electrochemical characteristics, temperature fluctuations or normal life decay, it is still within the safe range allowed by the design. In addition, setting the lower limit of the reference threshold to 5N is intended to capture the initial signals of abnormal health status of the battery 20. Even tiny, invisible deformations can be detected, thereby alerting the user at the budding stage of potential risks and avoiding false alarms caused by daily use.

[0034] It can be understood that 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 performed before the internal pressure of the battery 20 accumulates to a level that may cause more serious safety problems (such as compression damage to the pole piece or rupture of the shell).

[0035] Specifically, the comparison module 410 is electrically connected to the pressure detection module 30. After the pressure detection module 30 detects a corresponding pressure value, the detected pressure value can be output 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.

[0036] It is understood that there are various specific comparison results, such as the pressure value being greater than the reference threshold, the pressure value being equal to the reference threshold, and the pressure value being equal to the reference threshold. The comparison module 410 can output a prompt signal containing different information according to different comparison results.

[0037] The number of pressure detection modules 30 may be one or more. Therefore, the number of pressure values ​​received by the comparison module 410 may also be one or more. When the number of pressure values ​​received by the comparison module 410 is multiple, the comparison module 410 may compare each pressure value with a reference threshold value, thereby outputting a corresponding prompt signal.

[0038] For example, the comparison module 410 may be a chip of model CSU8RP3119, HC32L130, IP5209S, BU7250G or LM2903, which is not limited here.

[0039] Exemplarily, the comparison module 410 may also be a module in a chip of model IP5385, CSU8RP3119, SW6308, PM32F411, SW6308 or PT32L031, which is not limited here.

[0040] Specifically, the prompt signal finally generated by the comparison module 410 can be output for interaction with the user, so that the user can be informed of the swelling condition of the battery 20 in the mobile power supply in a timely manner.

[0041] Furthermore, the pressure detection module 30 may output the pressure value to the comparison module 410 via Bluetooth communication, wireless communication, or electrical connection communication.

[0042] For example, the prompt signal output by the comparison module 410 can be output to the prompt module 60 of the mobile power supply itself, such as a buzzer, a display panel, a display light, etc. The prompt module 60 responds to different prompt signals and provides feedback to the user in the form of prompts.

[0043] For example, the prompt signal output by the comparison module 410 can also be output to the user's mobile device. The user can receive and view specific warning information, battery 20 swelling status and recommended operations on the mobile device, realizing remote monitoring and intelligent reminder.

[0044] For example, the prompt signal output by the comparison module 410 can also be output to the cloud server of the mobile power supplier. The supplier can use the cloud server to analyze, store and track the bulging status of the received battery 20, thereby realizing fault prediction, big data analysis or proactively providing customer service support.

[0045] In one possible embodiment, the prompt signal includes 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 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.

[0046] In this way, the present invention can specifically subdivide the prompt signal into multi-level signals of "safety signal, warning signal and bulging signal", so as to more accurately convey the bulging condition of the battery 20, so that the user or device can take different countermeasures according to different levels of signals, thereby improving the level of refinement of the safety management of the battery 20 in the mobile power supply.

[0047] For example, the prompt signal may specifically include safety information indicating that the battery 20 has no bulge or the bulge is slight, and the battery 20 is currently in a safe state and can be used normally.

[0048] For example, the warning signal may specifically include a bulge indicating that the battery 20 may have a safety hazard.

[0049] For example, the prompt signal may specifically include a bulging signal indicating that the battery 20 has bulged, which may pose a safety hazard, and that continued use may result in a safety hazard.

[0050] 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 will send 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.

[0051] It is understandable that the bulging of the battery 20 may not occur uniformly, and may only begin to bulge in a local area (for example, near the edge of the electrode 21 or a defective cell). If there is only one pressure detection module 30, and this pressure detection module 30 is not installed at the location of the bulge, it may cause monitoring failure. In the embodiment of the present application, a "monitoring network" is formed by setting up a distributed layout of multiple pressure detection modules 30, which greatly increases the probability of capturing local bulging of the battery 20, thereby improving the reliability of monitoring the bulge of the battery 20.

[0052] The comparison module 410 is further configured to output a safety signal when each received pressure value is smaller than a reference threshold.

[0053] It can be understood that when the pressure values ​​output by each pressure detection module 30 are all smaller than the reference threshold, it indicates that the battery 20 is in good condition, and the comparison module 410 outputs a safety signal.

[0054] The comparison module 410 is further configured to generate an early warning signal output when receiving at least one pressure value that is greater than or equal to a reference threshold.

[0055] It is understood that an abnormal increase in the pressure value data detected by a pressure detection module 30 may indicate local deformation of the battery 20, possibly indicating a bulge. However, since a sudden increase in pressure at a single point may also be due to interfering factors such as external compression or transient temperature changes, it is not sufficient to fully determine whether the battery 20 is bulging. 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 determination.

[0056] 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 limit, the battery 20 is determined to be at risk of bulging. Although the presence of abnormal single-point data is due to the probability of instantaneous external interference, for the highest safety principles, the comparison module 410 will immediately trigger a warning, prompting the user to pay attention to potential risks, thereby achieving proactive protection.

[0057] In one possible implementation, Figure 7 As shown, the mobile power supply further includes a prompt module 60. The prompt module 60 is provided on the outer wall surface 11, and is electrically connected to the comparison module 410. The prompt module 60 is configured to receive a prompt signal and prompt the information corresponding to the prompt signal.

[0058] Specifically, the prompt module 60 may include a display panel, an indicator light, or a buzzer, etc. 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; when the comparison signal outputs a bulge signal, the indicator light turns red.

[0059] 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 immediately understand the safety status of the mobile power supply device and take appropriate actions based on the prompts, enhancing the safety of the mobile power supply and user experience.

[0060] like Figure 4 and Figure 5 As shown, in one possible embodiment, there are multiple pressure detection modules 30; each pressure detection module 30 overlaps with the orthographic projection of the battery 20 on the inner wall surface 12. This ensures that each pressure sensing module is located within the projection area of ​​the battery 20 on the inner wall of the housing, ensuring that each pressure sensing module can directly and effectively sense the pressure generated when the battery 20 bulges, avoiding monitoring failure caused by the pressure sensing module being placed in an ineffective area, and ensuring the reliable functioning of the pressure sensing module.

[0061] Specifically, the “projection of the battery 20 on the inner wall surface 12 ” may refer to the area covered by the positive projection of the battery 20 on the inner wall surface 12 , that is, the geometric projection area obtained by projecting the battery 20 in a direction perpendicular to the inner wall surface 12 with the inner wall surface 12 as the projection plane.

[0062] 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 on 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 on the inner wall surface 12. Furthermore, the first central axis 23 extends along the length direction, and the second central axis 24 extends along the width direction.

[0063] It is understood that the middle portion of the battery 20 and the electrodes 21 are concentrated areas of internal chemical reactions and are often the starting points for failures and bulging. In this application, at least one pressure detection module 30 is configured to monitor these key areas, achieving targeted and enhanced monitoring of key areas of the battery 20, which helps to detect bulging earlier and more sensitively.

[0064] In one possible embodiment, the mobile power supply further includes a position determination module 450. The position determination module 450 is electrically connected to the comparison module 410; the position determination module 450 is configured to receive the bulge signal and warning signal output by the comparison module 410, and generate location information indicating the location where the bulge occurred based on the identifier of the specific pressure detection module 30 that triggered the warning signal or bulge signal. In this way, by setting up the coordination between the pressure detection module 30 and the position determination module 450, it is possible to achieve a preliminary location of the bulge position of the battery 20, rather than simply determining the bulge phenomenon. This significantly improves the maintainability and safety of the mobile power supply - users or maintenance personnel can quickly locate the fault point based on the location information and take targeted disposal measures. At the same time, this information also helps mobile power supply manufacturers summarize the common bulge locations of the battery 20. For example, if the battery 20 of a certain model of product frequently reports bulging in the same location, the manufacturer can strengthen the structural design or heat dissipation path at that location.

[0065] Specifically, the identifier (ID) of each pressure detection module 30 can be pre-associated with the specific location of each pressure detection module 30. A mapping relationship between the identifier of the pressure detection module 30 and the specific location of the pressure detection module 30 is pre-established. Furthermore, the pressure value output by the pressure detection module 30 includes the identifier of the pressure detection module 30. Consequently, the subsequent position determination module 450 can directly obtain the specific location of the corresponding identified pressure detection module 30 by reading the identifier.

[0066] For example, the location determination module 450 may be a chip of model IP5362, AH463, or LM224DR2G, which is not limited here.

[0067] Exemplarily, the location determination module 450 may also be a module in a chip with model number IP5385, CSU8RP3119, PM32F411, SW6308 or PT32L031, which is not limited here.

[0068] In one possible embodiment, the mobile power supply 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.

[0069] Thus, the embodiment of the present application, by providing the timing module 420, can introduce a timing mechanism, whereby the abnormal pressure must persist for a period of time before it is confirmed as a bulge in the battery 20, which poses a safety hazard. This can effectively filter out pressure fluctuations caused by brief squeezing, external impact, or transient temperature changes, greatly reducing the false alarm rate of battery 20 bulges and enhancing the accuracy of the battery 20 bulge judgment.

[0070] Specifically, the timing module 420 can be arranged on the circuit board 40 in the mobile power supply housing cavity 13. The timing module 420 can be a control chip, or the timing module 420 can be a module in the control chip, or the timing module 420 can be an electrical component controlled by the control chip.

[0071] It is understandable that mobile power supplies may encounter short-term, non-destructive pressure changes in daily use. For example, a user accidentally sits on a power bank, a heavy object in a backpack is briefly squeezed, or there is a momentary impact when falling from a height. If there is no timing module 420, any of the above short-term overpressures will immediately trigger an early warning or alarm, resulting in a false positive (False Positive), and frequent false positives will cause inconvenience to the user experience. This application introduces "time persistence" as a judgment condition for abnormal bulging by setting the timing module 420. Only when the abnormal pressure (exceeding the threshold) state lasts for a period of time (exceeding the preset time threshold) can it be confirmed that this is a real bulging risk rather than a momentary interference.

[0072] Specifically, the time threshold may be 5 seconds to 30 seconds, for example, 5 seconds, 8 seconds, 10 seconds, 15 seconds, 20 seconds, 25 seconds, or 30 seconds, which is not limited here.

[0073] It's understandable that the vast majority of unexpected impacts a power bank might encounter in daily life, such as falling from a desk, being squeezed by items in a bag, or briefly being pressed by a seat, typically involve high-force impacts that last only a short time, typically between 1 and 3 seconds. Setting the time threshold to greater than 5 seconds provides a sufficient buffer for these transient events. Only pressure anomalies lasting more than 5 seconds are more likely to be caused by persistent bulging inside the battery 20, rather than accidental external factors. This ensures the user experience and the credibility of the bulge alert.

[0074] Understandably, while battery bulging is a gradual process, early intervention is still necessary. Long delays (e.g., exceeding 30 seconds) can mean the accumulation of potential risks. 30 seconds is generally considered the upper limit for "instant feedback," ensuring users are promptly informed of risks and can take corrective action.

[0075] Specifically, after the comparison module 410 in the present application receives a pressure value greater than or equal to the reference threshold, in addition to sending a warning signal, it is also necessary to determine whether the battery 20 has indeed bulged with a safety hazard. Therefore, it is necessary to confirm the bulging condition of the battery 20. After the comparison module 410 receives a pressure value greater than or equal to the reference threshold, it 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 comparison module 410 will generate and output the same number of timing signals to the timing module 420 as the number of pressure values ​​greater than or equal to the reference threshold received by the comparison module 410. Obviously, the number of pressure values ​​greater than or equal to the reference threshold is the same as the number of timing signals.

[0076] When the timing module 420 receives the timing signal, the timing module 420 will start timing. The timing module 420 will count the number of times the timing module 420 receives the timing signal. In some embodiments, the timing module 420 may include a timer.

[0077] In one possible embodiment, the comparison module 410 is further configured to generate a reset signal to cancel the corresponding timeout signal when any pressure value greater than or equal to the reference threshold falls below the reference threshold, or to output a reset signal to the timing module 420, causing the timing module 420 to reset the corresponding timer. This can avoid misjudgments caused by external forces when the battery 20 is squeezed, thereby improving the accuracy of determining whether the battery 20 is bulging.

[0078] It is understood that the embodiments of the present application introduce "state reversible" control for the comparison module 410 to generate and output a reset signal, enabling the comparison module 410 to dynamically respond to changing environmental conditions. Specifically, the configuration of the reset signal can effectively prevent false alarms and premature alarms. When a brief external squeeze (such as being pressed by a heavy object) causes the pressure to exceed the standard, the comparison module 410 will control the comparison module 410 to start the timer to prepare for the bulge alarm; however, if the squeeze is quickly released (the pressure value drops), the comparison module 410 can "eliminate" this accidental event, output a reset signal, and reset the bulge alarm process. This ensures that only those persistent pressure anomalies (such as actual battery 20 bulging) will ultimately trigger the bulge alarm, thereby avoiding frequent alarm triggering due to unintentional mistakes in daily use, improving the accuracy of battery 20 bulge judgment, and thus ensuring user experience and the credibility of the bulge alarm.

[0079] Specifically, in the present application, the reset signal has two control modes. One control mode is for the state of "alarm has been generated": when the pressure anomaly continues for a long enough time, the timing module 420 has completed the timing and generated a timeout signal, and the signal has been delivered to the comparison module 410, the comparison module 410 has output a warning signal or a bulge signal. At this time, if the external extrusion is released or the bulge risk is accidentally eliminated (manifested as the abnormal pressure value falls below the reference threshold), the reset signal generated by the comparison module 410 will play the role of an "alarm lifted" instruction. The function of the reset signal can be to directly cancel or invalidate the previous timeout signal.

[0080] The second control method addresses the "alarm not generated, but timer started" state: when the pressure anomaly persists for a short period of time, timer module 420 has not reached the time threshold, and no timeout signal is generated. If the pressure value drops, the reset signal output by comparison module 410 acts as an "emergency abort" command and is sent to timer module 420. This reset signal immediately terminates the ongoing timer process in timer module 420 and resets the accumulated time to zero. This fully resets timer module 420, preparing it for the next possible pressure event and effectively filtering out brief pressure anomalies.

[0081] Therefore, by outputting a reset signal from comparison module 410, the system maintains a reset capability throughout the entire timeline, from the moment the pressure anomaly occurs to the moment the alarm is triggered (output of a warning signal or bulge signal). Regardless of the stage, as soon as pressure conditions return to normal, the system can immediately take the most appropriate action (either pausing the timer or disabling the alarm). This improves the reliability and certainty of the power bank's determination of battery bulges, providing a double guarantee for the power bank's safety and stability.

[0082] 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 that at least two different pressure detection modules 30 continuously detect an anomaly (generate timeout signals) before a final determination of a bulge in the battery 20 is made. This constitutes a "double confirmation" or "majority rule" mechanism, further eliminating misjudgments caused by failure of a single pressure detection module 30 or local interference. This ensures a highly reliable bulge signal, thereby ensuring a high user experience and the credibility of the bulge alert.

[0083] Furthermore, the comparison module 410 is further configured to generate and output a warning signal when receiving one timeout signal. The comparison module 410 is further configured to generate and output a safety signal when receiving zero timeout signals.

[0084] It is understandable that in actual situations, after the comparison module 410 has received two or more timeout signals and generated a bulge signal output, the pressure values ​​detected by one or more pressure detection modules 30 may drop, causing the comparison module 410 to output one or more reset signals to eliminate the timeout signals, causing the number of timeout signals in the comparison module 410 to drop from two or more to less than two. In this case, the comparison module 410 will receive less than two timeout signals, and the comparison module 410 will cancel the timeout signal that has been output and generate a safety signal or warning signal output.

[0085] It should be understood that, in the present 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 valid and have not been eliminated. The number of timeout signals "received" by the comparison module 410 will increase with the arrival of new timeout signals and will decrease accordingly with the arrival of a reset signal.

[0086] In one possible embodiment, the power bank further includes a disconnection module 430. Disconnection module 430 is electrically connected to comparison module 410; upon receiving a bulge signal output by comparison module 410, disconnection module 430 is configured to disconnect the output path of battery 20. Thus, by configuring disconnection module 430, upon confirming that a bulge posing a safety hazard has occurred in battery 20, the output path of battery 20 can be automatically and proactively disconnected. This prevents the dangers that may arise from users continuing to use the power bank after the bulge signal is indicated, fundamentally avoiding the power bank from operating while the battery 20 is in a faulty state, and greatly improving the safety of the power bank.

[0087] Specifically, the cut-off module 430 can be specifically arranged on the circuit board 40 in the mobile power supply accommodating cavity 13. The cut-off module 430 can specifically be a control chip, or the comparison module 410 can also 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.

[0088] Furthermore, when receiving the bulge signal, the cut-off module 430 can cut off the output path of the battery 20 as well as the input path of the battery 20 .

[0089] Specifically, the cut-off module 430 can cut off the circuit for the battery 20 to supply power to external devices, thereby preventing the battery 20 from becoming unstable or even experiencing thermal runaway due to on-load discharge.

[0090] Specifically, the cut-off module 430 can cut off the charging circuit of the external power supply to the battery 20 to avoid fire or explosion caused by continuing to charge the swollen battery 20.

[0091] Exemplarily, the cut-off module 430 may specifically include a switch tube, such as a metal oxide semiconductor field effect transistor.

[0092] In one possible embodiment, the mobile power supply further includes a recovery module 440. The recovery module 440 is electrically connected to the cut-off module 430 and the comparison module 410, respectively. The recovery module 440 is configured to receive a prompt signal from the comparison module 410 and, upon receiving a warning signal or a safety signal, generate a conduction signal and output it to the cut-off module 430. The cut-off module 430 is further configured to maintain or restore the output path of the battery 20 upon receiving the conduction signal. In this way, the recovery module 440 can automatically control the cut-off module 430 to restore power. Through the configuration of the recovery module 440, the mobile power supply can automatically resume operation from a false protection condition without manual user intervention (such as plugging and unplugging to restart), thus avoiding unnecessary interruptions in use and ensuring safety without affecting normal use.

[0093] Specifically, the recovery module 440 can be arranged on the circuit board 40 in the mobile power supply housing cavity 13. The recovery module 440 can be a control chip, or the recovery module 440 can be a module in the control chip, or the recovery module 440 can be an electrical component controlled by the control chip.

[0094] Specifically, the recovery module 440 can be in continuous communication with the comparison module 410 and continuously receive the prompt signal from the comparison module 410. After receiving the conduction signal, the cut-off module 430 will restore or maintain the conduction of the battery 20 circuit.

[0095] Furthermore, if the comparison module 410 has previously output a bulge 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 a warning signal, the recovery module 440 can serve as an error correction module in the mobile power supply and output a conduction signal to the cut-off module 430, so that the cut-off module 430 can restore the output path of the battery 20 that had been cut off by the cut-off module 430.

[0096] Furthermore, if the output path of the battery 20 is already in a conducting state, the recovery module 440 may output a conducting signal to the cut-off module 430 to keep the output path of the battery 20 conducting.

[0097] Of course, when the prompt signal output by the comparison module 410 to the recovery module 440 is a bulge 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 .

[0098] Exemplarily, the recovery module 440 may be a circuit module composed of basic logic gate circuits (such as an AND gate and an OR gate).

[0099] Exemplarily, the recovery module 440 may also be a module in a chip with model number IP5385, CSU8RP3119, PM32F411, SW6308 or PT32L031, which is not limited here.

[0100] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" indicate that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations 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 any one or more embodiments or examples.

[0101] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A mobile power supply, characterized in that: The mobile power supply comprises: A housing, the housing having an inner wall surface and an outer wall surface opposite to each other, the inner wall surface forming a receiving cavity; a battery, disposed in the accommodating cavity; a pressure detection module, disposed between the battery and the inner wall surface; The comparison module is electrically connected to the pressure detection module, and is 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 according to the comparison result.

2. The mobile power supply according to claim 1, characterized in that: The prompt signals include safety signals, warning signals and bulge signals; There are multiple pressure detection modules, and the comparison module is electrically connected to the multiple pressure detection modules; The comparison module is further configured to output the safety signal when each of the received pressure values ​​is less than the reference threshold; The comparison module is further configured to generate the warning signal output when receiving at least one of the pressure values ​​that is greater than or equal to the reference threshold.

3. The mobile power supply according to claim 2, characterized in that: 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 the timeout signals.

4. The mobile power supply according to claim 3, characterized in that: The comparison module is further configured to generate and output the bulge signal when receiving more than or equal to 2 timeout signals.

5. The mobile power supply according to claim 2, characterized in that: Also includes: 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 receiving the bulge signal output by the comparison module.

6. The mobile power supply according to claim 5, characterized in that: 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 upon receiving the warning signal or the safety signal and output the signal to the cut-off module; The cut-off module is further configured to maintain or restore the output path of the battery when receiving the turn-on signal.

7. The mobile power supply according to claim 3, characterized in that: The comparison module 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, or the comparison module outputs the reset signal to the timing module, and the timing module clears the corresponding timing time.

8. The mobile power supply according to claim 3, characterized in that: Also includes: a position determination module, electrically connected to the comparison module; The position judgment module is configured to receive the bulge signal and the warning signal output by the comparison module, and generate position information indicating the location where the bulge occurs based on the identification of the specific pressure detection module that triggers the warning signal or the bulge signal.

9. The mobile power supply according to any one of claims 1 to 8, characterized in that: There are multiple pressure detection modules; Each of the pressure detection modules overlaps with the orthographic projection of the battery on the inner wall surface.

10. The mobile power supply according to claim 9, characterized in that: The battery comprises: an electrode and a main body, wherein the electrode is located at an end of the main body; The battery has a length direction and a width direction, and the main body has 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 a projection of the first central axis or the second central axis on the inner wall surface.

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