Power management method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of electronic equipment, and particularly provides a power management method and device, electronic equipment and a storage medium, and the power management method comprises the steps: obtaining the initial charging voltage of the electronic equipment during each charging in a current time period, and determining a power utilization depth parameter according to the difference between the initial charging voltage and the historical discharging cut-off voltage in the current time period, adjusting and updating the historical discharging cut-off voltage based on the power utilization depth parameter to obtain the current discharging cut-off voltage, and interrupting power supply when the battery voltage is smaller than or equal to the current discharging cut-off voltage. In the embodiment of the invention, the use habit of a user when using the electronic equipment is fully considered, the battery discharge degree of the electronic equipment is quantified through the power utilization depth parameter, the battery use condition is accurately reflected, and the discharge cut-off voltage of the battery is dynamically adjusted and updated based on the power utilization depth parameter, so that the user experience is improved. And on the basis of giving full play to battery capacity characteristics, potential safety hazards such as battery swelling are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic devices, and in particular to a power management method, device, electronic device and storage medium. Background Art

[0002] As a cyclically chargeable and dischargeable energy storage device, lithium batteries are currently widely used in electronic products, new energy vehicles and other fields. Taking electronic equipment as an example, as the battery discharge process proceeds, the power management system of the electronic equipment detects that the battery voltage reaches the discharge cut-off voltage, and the electronic equipment will automatically shut down.

[0003] At present, the discharge cut-off voltage of most electronic devices is a fixed value set by the manufacturer. This method cannot accurately reflect the battery usage. On the one hand, it is easy to cause the battery capacity characteristics to not be maximized, and on the other hand, there are battery safety risks. Summary of the invention

[0004] In order to accurately reflect the battery usage, give full play to the battery capacity characteristics, and reduce the potential safety hazards of the battery, the embodiments of the present disclosure provide a power management method, device, electronic device and storage medium.

[0005] In a first aspect, an embodiment of the present disclosure provides a power management method, comprising:

[0006] Acquire the initial charging voltage of the electronic device each time it is charged in the current time period, wherein the initial charging voltage represents the battery voltage when the electronic device starts to charge;

[0007] Determine a power usage depth parameter according to a difference between the charging initial voltage in the current time period and the historical discharge cut-off voltage, wherein the power usage depth parameter indicates a discharge degree of the battery in the current time period;

[0008] Adjust and update the historical discharge cut-off voltage based on the power consumption depth parameter to obtain a current discharge cut-off voltage;

[0009] When it is detected that the battery voltage of the electronic device is less than or equal to the current discharge cut-off voltage, the power supply of the battery to the electronic device is interrupted.

[0010] In some implementations, obtaining the initial charging voltage of the electronic device each time it is charged in the current time period includes:

[0011] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a first set number, the process of obtaining the charging initial voltage of the electronic device each time it is charged in the current time period is performed.

[0012] In some embodiments, the method described in the present disclosure further includes:

[0013] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a first set number, the initial discharge cut-off voltage is adjusted based on a preset voltage increment.

[0014] In some embodiments, determining the power usage depth parameter according to the difference between the charge initial voltage in the current time period and the historical discharge cut-off voltage includes:

[0015] determining an average value of the charging initial voltage in the current time period;

[0016] The power usage depth parameter is determined based on a difference between the average value and the historical discharge cut-off voltage.

[0017] In some implementations, adjusting and updating the historical discharge cut-off voltage according to the power usage depth parameter to obtain the current discharge cut-off voltage includes:

[0018] In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on a difference between the charge initial voltage and the historical discharge cut-off voltage to obtain a current discharge cut-off voltage;

[0019] In response to the power usage depth parameter being less than a preset parameter threshold, the historical discharge cut-off voltage is adjusted and updated based on a set voltage value to obtain a current discharge cut-off voltage.

[0020] In some embodiments, in response to the power usage depth parameter being greater than or equal to a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on the difference between the charge initial voltage and the historical discharge cut-off voltage includes:

[0021] In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, determining an average value of the charge initial voltage in the current time period, and reducing a voltage value of the historical discharge cut-off voltage based on a difference between the average value and the historical discharge cut-off voltage;

[0022] In response to the power usage depth parameter being less than a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on a set voltage value, including:

[0023] In response to the power usage depth parameter being less than a preset parameter threshold, the voltage value of the historical discharge cut-off voltage is increased based on the set voltage value.

[0024] In some embodiments, the method described in the present disclosure further includes:

[0025] In the process of reducing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage being reduced to a preset lower limit value, determining the preset lower limit value as the voltage value of the current discharge cut-off voltage;

[0026] In the process of increasing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage increasing to a preset upper limit value, the preset upper limit value is determined as the voltage value of the current discharge cut-off voltage.

[0027] In some embodiments, the method described in the present disclosure further includes:

[0028] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a second set number, the larger value between the current discharge cut-off voltage and the preset upper limit value is determined as the discharge cut-off voltage of the electronic device, and the dynamic adjustment process ends.

[0029] In a second aspect, an embodiment of the present disclosure provides a power management device, including:

[0030] A charging detection module, configured to obtain an initial charging voltage of the electronic device each time it is charged in a current time period, wherein the initial charging voltage represents a battery voltage when the electronic device starts charging;

[0031] a parameter determination module, configured to determine a power usage depth parameter according to a difference between the charging initial voltage and the historical discharge cut-off voltage in a current time period, wherein the power usage depth parameter indicates a discharge degree of the battery in the current time period;

[0032] A voltage adjustment module is configured to adjust and update the historical discharge cut-off voltage based on the power consumption depth parameter to obtain a current discharge cut-off voltage;

[0033] The power management module is configured to interrupt the battery from supplying power to the electronic device when it is detected that the battery voltage of the electronic device is less than or equal to the current discharge cut-off voltage.

[0034] In some embodiments, the charging detection module is configured to:

[0035] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a first set number, the process of obtaining the charging initial voltage of the electronic device each time it is charged in the current time period is performed.

[0036] In some embodiments, the charging detection module is configured to:

[0037] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a first set number, the initial discharge cut-off voltage is adjusted based on a preset voltage increment.

[0038] In some embodiments, the parameter determination module is configured to:

[0039] determining an average value of the charging initial voltage in the current time period;

[0040] The power usage depth parameter is determined based on a difference between the average value and the historical discharge cut-off voltage.

[0041] In some implementations, the voltage adjustment module is configured to:

[0042] In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on a difference between the charge initial voltage and the historical discharge cut-off voltage to obtain a current discharge cut-off voltage;

[0043] In response to the power usage depth parameter being less than a preset parameter threshold, the historical discharge cut-off voltage is adjusted and updated based on a set voltage value to obtain a current discharge cut-off voltage.

[0044] In some implementations, the voltage adjustment module is configured to:

[0045] In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, determining an average value of the charge initial voltage in the current time period, and reducing a voltage value of the historical discharge cut-off voltage based on a difference between the average value and the historical discharge cut-off voltage;

[0046] In response to the power usage depth parameter being less than a preset parameter threshold, the voltage value of the historical discharge cut-off voltage is increased based on the set voltage value.

[0047] In some implementations, the voltage adjustment module is configured to:

[0048] In the process of reducing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage being reduced to a preset lower limit value, determining the preset lower limit value as the voltage value of the current discharge cut-off voltage;

[0049] In the process of increasing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage increasing to a preset upper limit value, the preset upper limit value is determined as the voltage value of the current discharge cut-off voltage.

[0050] In some implementations, the voltage adjustment module is configured to:

[0051] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a second set number, the larger value between the current discharge cut-off voltage and the preset upper limit value is determined as the discharge cut-off voltage of the electronic device, and the dynamic adjustment process ends.

[0052] In a third aspect, an embodiment of the present disclosure provides an electronic device, including:

[0053] Processor; and

[0054] A memory storing computer instructions, wherein the computer instructions are used to enable the processor to execute the method described in any embodiment of the first aspect.

[0055] In a fourth aspect, an embodiment of the present disclosure provides a storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to execute the method according to any embodiment of the first aspect.

[0056] The power management method of the disclosed embodiment includes obtaining the initial charging voltage of the electronic device each time it is charged in the current time period, determining the power usage depth parameter according to the difference between the initial charging voltage in the current time period and the historical discharge cut-off voltage, adjusting and updating the historical discharge cut-off voltage based on the power usage depth parameter, obtaining the current discharge cut-off voltage, and interrupting the power supply when the battery voltage is less than or equal to the current discharge cut-off voltage. In the disclosed embodiment, the user's usage habits when using the electronic device are fully considered, and the battery discharge degree of the electronic device is quantified through the power usage depth parameter to accurately reflect the battery usage, and the battery discharge cut-off voltage is dynamically adjusted and updated based on the power usage depth parameter, so as to reduce safety hazards such as battery bulging and improve battery life while giving full play to the battery capacity characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0058] Figure 1 is a flowchart of a power management method according to some embodiments of the present disclosure.

[0059] Figure 2 is a flowchart of a power management method according to some embodiments of the present disclosure.

[0060] Figure 3 It is a structural block diagram of a power management device according to some implementations of the present disclosure.

[0061] Figure 4 It is a structural block diagram of an electronic device according to some implementations of the present disclosure. DETAILED DESCRIPTION

[0062] The technical solution of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described implementation is a part of the implementation of the present disclosure, rather than all the implementations. Based on the implementation in the present disclosure, all other implementations obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure. In addition, the technical features involved in the different implementations of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

[0063] As a cyclically chargeable and dischargeable energy storage device, lithium batteries are currently widely used in electronic products, new energy vehicles and other fields. Taking electronic devices as an example, when users use electronic devices, the batteries of the electronic devices are continuously discharged until the battery voltage reaches the discharge cut-off voltage, and the electronic devices will automatically shut down.

[0064] Among the current negative electrode materials for lithium batteries, silicon (Si) has the highest gram capacity, which is about 11 times the theoretical gram capacity of existing graphite materials. If the same capacity is released, the amount of silicon used will be much lower than that of graphite materials. However, pure silicon negative electrodes have more problems compared to traditional graphite negative electrodes, such as: 1. The lithium removal platform of silicon negative electrodes is higher than that of graphite, and the corresponding platform of the whole battery is lower, which is not conducive to the energy output of the traditional voltage window; 2. The expansion of silicon negative electrodes is about ten times that of graphite. As the cycle charge and discharge proceeds, the huge volume expansion will cause the deterioration of battery safety performance.

[0065] In the current industry, by doping a small amount of silicon in graphite batteries, the battery capacity can be effectively increased while retaining the original cycle performance. Such batteries are collectively referred to as silicon-carbon batteries. However, the problems of the silicon negative electrode mentioned above will also follow, which brings two major challenges to the use of batteries, mainly: 1. How to reduce the discharge cut-off voltage of the battery as much as possible, so as to give full play to the large capacity characteristics of the silicon negative electrode; 2. How to solve the expansion problem of the battery after low-voltage discharge. Finding a balanced solution to these two problems is the direction that terminal companies are currently working to solve.

[0066] At present, silicon-carbon batteries are still in their infancy, and most current electronic devices still use a fixed discharge cut-off voltage. However, the discharge cut-off voltage of silicon-carbon batteries can be 200mA to 400mA lower than that of traditional graphite batteries, thus having a larger battery capacity. For example, taking smartphones as an example, the discharge cut-off voltage of traditional graphite batteries is generally 3.4V, while the discharge cut-off voltage of silicon-carbon batteries can be 3.0V to 3.2V.

[0067] However, silicon-carbon batteries always maintain a low discharge cut-off voltage. As the charge and discharge cycles proceed, the expansion problem of the silicon material gradually increases, and the lithium ions on the negative electrode surface are continuously converted to form a solid electrolyte interface film (SEI film), resulting in rapid decay of battery capacity in the later stages of the cycle, accelerating battery aging, and posing a greater safety hazard.

[0068] In order to alleviate this problem, some electronic devices have introduced a strategy to dynamically adjust the discharge cut-off voltage of silicon-carbon batteries. The method is that the manufacturer sets different boost levels according to the number of charge and discharge cycles through experimental means in advance. When the number of charge and discharge cycles of the silicon-carbon battery reaches a certain level, the discharge cut-off voltage can be increased by an incremental value based on the original discharge cut-off voltage to alleviate the capacity attenuation of the battery in the later cycles.

[0069] For example, when the battery is charged and discharged for 0 to 100 cycles, the discharge cut-off voltage is 3.0V; when the battery is charged and discharged for 100 to 300 cycles, the discharge cut-off voltage is increased to 3.1V; when the battery is charged and discharged for 300 to 500 cycles, the discharge cut-off voltage is increased to 3.2V; and so on.

[0070] Although this strategy maintains the capacity characteristics of the battery in the early stage to a certain extent and alleviates the capacity decay process of the battery in the later charging cycle, the inventors of this case have found that this voltage boost strategy only adjusts the discharge cut-off voltage based on the number of charge and discharge cycles, which cannot accurately reflect the battery usage, and thus the adjusted discharge cut-off voltage is not accurate enough.

[0071] It is understandable that when using electronic devices, each user's usage habits vary greatly, and thus the depth of battery consumption is also different. For example, two mobile phones with the same number of charge and discharge cycles will have different degrees of battery capacity attenuation due to different user usage habits.

[0072] For example, some users have a long-term habit of using up their mobile phones until they shut down automatically, which means that the battery discharge often reaches or is below the discharge cut-off voltage. In this case, the battery's power consumption depth is very high, and the battery capacity decay is relatively more serious under the same number of charge and discharge cycles. On the other hand, some users have a long-term habit of charging their mobile phones when there is more than 20% power left, which means that the battery discharge rarely reaches or is below the discharge cut-off voltage. In this case, the battery's power consumption depth is low, and the battery capacity decay is relatively light under the same number of charge and discharge cycles.

[0073] If the adjustment strategy in the related technology is adopted, for users with low power consumption depth, as the number of battery charge and discharge cycles increases, the battery discharge cut-off voltage is continuously increased, resulting in the battery capacity being limited, and the large capacity characteristics of silicon-carbon batteries cannot be fully utilized. For users with high power consumption depth, although the number of battery charge and discharge cycles has not reached the next level, the battery capacity attenuation is already very serious. This adjustment strategy may have a risk of delay, resulting in a greater safety hazard.

[0074] Through the above process, it can be seen that in the relevant technical solution, the dynamic adjustment strategy of the discharge cut-off voltage cannot accurately reflect the battery usage, resulting in the battery capacity characteristics cannot be maximized, and there are major battery safety risks.

[0075] Based on this, the embodiments of the present disclosure provide a power management method and device for an electronic device battery, an electronic device, and a storage medium.

[0076] The core idea of ​​the disclosed implementation is to determine the battery power usage depth parameters in each time period according to the user's actual charging and discharging habits when using the electronic device in each time period, and adjust and update the historical discharge cut-off voltage based on the power usage depth parameters, so that each time period can adjust and update the discharge cut-off voltage of the previous period based on the user's usage habits.

[0077] In a first aspect, an embodiment of the present disclosure provides a power management method, which can be applied to an electronic device and executed by a processor of the electronic device.

[0078] It can be understood that the electronic device described in the present disclosure can be any type of device with cyclic charge and discharge capabilities, such as smart phones, tablet computers, wearable devices, laptops, smart appliances, etc., and the present disclosure is not limited to this.

[0079] like Figure 1 As shown, in some embodiments, the power management method of the present disclosure example includes:

[0080] S110, obtaining the initial charging voltage of the electronic device each time it is charged in the current time period.

[0081] In the embodiment of the present disclosure, the process of a user using an electronic device can be divided into continuous time periods according to the time length in advance, which can be expressed as time period T0, time period T1, time period T2... The specific time length of the time period can be selected according to needs.

[0082] For example, in one example, the electronic device is a smart phone. Considering the charge and discharge cycle of the electronic device and the battery attenuation rate, the length of the time period can be set to 1 month, that is, every 1 month is a time period. Of course, those skilled in the art can understand that the specific length of the time period can also be other values, such as 1 week, 15 days, etc., and the present disclosure does not limit this.

[0083] Take the current time period as T i For example, the user is in time period T i When using electronic devices, it is often necessary to charge the electronic devices multiple times. For example, in the current time period T i Take one month as an example, the electronic device is a smartphone. During this one-month period, whenever the smartphone runs out of power or is about to run out of power, the user needs to charge the smartphone, so that the current time period T i During the process, electronic devices will be charged many times.

[0084] In the embodiment of the present disclosure, the electronic device needs to obtain the initial charging voltage V each time it is charged. i , initial charging voltage V i It refers to the battery voltage of the electronic device when it starts charging.

[0085] It is understandable that due to different habits of using electronic devices by different users, some users are accustomed to starting charging when the electronic device automatically shuts down, while some users are accustomed to starting charging when the electronic device power is less than 50%, and some users are accustomed to starting charging when the electronic device voltage is less than 20%.

[0086] Therefore, in the embodiment of the present disclosure, the electronic device counts the current time period T i The initial charging voltage V of the electronic device each time it is charged i , which can reflect the user's usage habits and thus reflect the battery life of the electronic device in the current time period T i The degree of discharge in.

[0087] For example, in an example scenario, the current time period T i Take one month as an example, the electronic device is a smart phone. User A charges the phone 35 times in total during this one month. Therefore, the electronic device can record the battery voltage corresponding to the start time of each charge, that is, the initial charging voltage V i , a total of 35 charging initial voltages V were recorded i .

[0088] It is worth noting that in some scenarios, if the time interval between two charges of an electronic device is very short, it may be that an emergency interrupted the charging process, such as the user temporarily unplugging the charger to answer a phone call; or a temporary power outage, which briefly interrupted the charging process. In this scenario, if two or more charges with very close time intervals are identified as the user's charging behavior, it may not truly reflect the user's charging habits.

[0089] Therefore, in the embodiment of the present disclosure, before obtaining the initial charging voltage of each charging of the electronic device, the current charging time can be compared with the previous charging time. If the time interval is greater than or equal to the preset time threshold, the initial charging voltage V of the current charging is obtained. i On the contrary, if the time interval is less than the preset time threshold, the acquisition of the current charging initial voltage may be abandoned.

[0090] The specific value of the preset time threshold can be selected according to the scenario requirements, for example, it can be 2 hours, 3 hours, 5 hours, etc., and the present disclosure does not impose any restrictions on this.

[0091] S120: Determine a power usage depth parameter according to a difference between a charge initial voltage and a historical discharge cut-off voltage in a current time period.

[0092] It can be understood that the historical discharge cut-off voltage is the battery discharge cut-off voltage before adjustment. When the current time period is the first time period, the historical discharge cut-off voltage is the set initial value. When the current time period is not the first time period, the historical discharge cut-off voltage is the discharge cut-off voltage calculated in the previous time period, that is, the discharge cut-off voltage can be dynamically updated in each time period.

[0093] Based on the current time period T i For example, the current time period T has been obtained through the aforementioned S110 i The initial charging voltage V i It can be understood that the historical discharge cut-off voltage represents the battery voltage at which the electronic device automatically shuts down, while the charging initial voltage V i It represents the battery voltage when the user charges the electronic device, so the difference between the two can reflect the depth of power consumption when the user uses the electronic device.

[0094] Specifically, the current time period T i There will be multiple charging initial voltages V i In some embodiments, the current time period T i All charging initial voltages V i Calculate the average value V i , the average value Vi That means the current time period T i The average initial charging voltage value when users charge their electronic devices is used to quantify users' charging habits.

[0095] Then, the average value V can be calculated i The difference between the current discharge voltage and the historical discharge cut-off voltage is determined as the power consumption depth parameter.

[0096] It can be understood that the larger the value of the power usage depth parameter is, the more likely the user is to charge the electronic device when the battery has more power remaining, i.e., the battery's power usage depth is lower. Conversely, the smaller the power usage depth parameter is, the more likely the user is to charge the electronic device when the battery has less power remaining, i.e., the battery's power usage depth is higher.

[0097] It can be seen from this that in the embodiments of the present disclosure, the power usage depth parameter can be used to quantify the user's usage habits of the electronic device, thereby accurately reflecting the battery discharge degree of the electronic device in the current time period.

[0098] S130: adjusting and updating the historical discharge cut-off voltage based on the power consumption depth parameter to obtain a current discharge cut-off voltage.

[0099] It can be understood that for the battery discharge process, the lower the battery discharge cut-off voltage, the more capacity the battery can release, but the capacity attenuation of the battery at a low discharge cut-off voltage is also more serious, and vice versa. It can be seen that the reasonable setting of the discharge cut-off voltage is the key to balancing the battery capacity performance and attenuation rate.

[0100] In the embodiments of the present disclosure, after the battery usage level of the electronic device is quantified by the power usage depth parameter, the historical discharge cut-off voltage can be adjusted and updated according to the power usage depth parameter, so that the current discharge cut-off voltage obtained can maximize the capacity performance while reducing the capacity attenuation rate.

[0101] For example, in some implementations, a corresponding preset parameter threshold may be pre-set for the power usage depth parameter, and the preset parameter threshold represents a critical value at which the battery discharge degree is more serious.

[0102] For example, if the current time period T i If the corresponding power usage depth parameter is greater than or equal to the preset parameter threshold, it means that the user is accustomed to charging the electronic device when the battery has a large amount of remaining power, that is, the battery's power usage depth is low and the attenuation degree is light. Therefore, the voltage value of the historical discharge cut-off voltage can be reduced to obtain a current discharge cut-off voltage with a lower voltage value, thereby giving full play to the battery capacity performance.

[0103] For example, if the current time period T iThe corresponding power usage depth parameter is less than the preset parameter threshold, which means that the user is accustomed to charging the electronic device when the remaining battery power is low, that is, the battery power usage depth is high and the attenuation is serious. Therefore, the voltage value of the historical discharge cut-off voltage can be increased to obtain a current discharge cut-off voltage with a higher voltage value, so as to better alleviate the battery capacity attenuation and improve the battery safety performance.

[0104] Here, only a theoretical description is given for the adjustment and update process of the historical discharge cut-off voltage. A more specific implementation will be described below and will not be described in detail here.

[0105] S140: When it is detected that the battery voltage of the electronic device is less than or equal to the current discharge cut-off voltage, interrupt the power supply of the battery to the electronic device.

[0106] In the embodiment of the present disclosure, after obtaining the current discharge cut-off voltage through the aforementioned method, it can be understood that the current discharge cut-off voltage represents the minimum output voltage of the battery. Therefore, during the use of the electronic device, when it is detected that the battery voltage is less than or equal to the current discharge cut-off voltage, it means that the current voltage is lower than the safety voltage, and the battery can be controlled to interrupt the power supply to the electronic device, so that the electronic device is shut down.

[0107] From the above, it can be seen that in the embodiments of the present disclosure, the usage habits of users when using electronic devices are fully taken into consideration, and the battery discharge degree of the electronic device is quantified through the power usage depth parameter to accurately reflect the battery usage situation, and the battery discharge cut-off voltage is dynamically adjusted and updated based on the power usage depth parameter. On the basis of fully utilizing the battery capacity characteristics, safety hazards such as battery bulging are reduced and the battery life is improved.

[0108] In some embodiments, considering that the number of charge and discharge cycles of the battery of the electronic device is relatively small, the user's charging habits have little effect on the battery degradation, so there is no need to perform the above-mentioned dynamic adjustment method process of the present disclosure.

[0109] Specifically, in some embodiments, the power management method of the present disclosure includes:

[0110] In response to the number of charge and discharge cycles of the battery of the electronic device reaching the first set number, the process of obtaining the initial charging voltage of the electronic device each time it is charged in the current time period in the aforementioned S110 is executed.

[0111] In the disclosed embodiment, the electronic device will record the number of times the battery is cycled and discharged. When the number of cycled charge and discharge does not reach the first set number, it means that the battery of the electronic device is in a relatively new state and the battery attenuation is very small. At this time, the user's charging habits have little effect on the battery performance. Therefore, the discharge cut-off voltage of the electronic device can be based on the initial discharge cut-off voltage V0 set by the manufacturer without adjustment.

[0112] As the electronic device is used, when the number of battery charge and discharge cycles reaches the first set number, it means that the battery of the electronic device has decayed to a certain extent. At this time, the user's charging habits have a greater impact on the battery performance. Therefore, the electronic device can dynamically adjust and update the discharge cut-off voltage according to the above-mentioned method process S110~S130.

[0113] It is worth noting that, in some embodiments, when the number of battery charge and discharge cycles reaches a first set number, it indicates that the battery of the electronic device has attenuated to a certain extent. At this time, the initial discharge cut-off voltage V0 can be adjusted based on the preset voltage increment, that is, the initial discharge cut-off voltage V0 can be increased.

[0114] For example, in one example, the first set number is 100, the initial discharge cut-off voltage V0=3.2V, and the preset voltage increment is 0.05V.

[0115] When a user uses an electronic device, the electronic device records the number of battery charge and discharge cycles. When the number of charge and discharge cycles is less than 100, the battery's discharge cut-off voltage remains at the initial discharge cut-off voltage V0=3.2V.

[0116] As the electronic device is used, when the battery reaches 100 cycles of charge and discharge, the initial discharge cut-off voltage V0=3.2V can be adjusted according to the preset voltage increment of 0.05V, that is, the current discharge cut-off voltage is adjusted to V0+0.05V=3.2V+0.05V=3.25V. At the same time, according to the above-mentioned method process of S110-S130, the discharge cut-off voltage is subsequently dynamically adjusted and updated.

[0117] For ease of understanding and explanation, the following will combine Figure 2 The implementation scenario shown illustrates the power management method of the embodiment of the present disclosure.

[0118] like Figure 2 As shown, in some embodiments, the power management method of the present disclosure example includes:

[0119] S201, the electronic device is in an initial state.

[0120] For example, when the electronic device is just activated, the initial discharge cut-off voltage of the battery is V0.

[0121] S202: Detect the number of charge and discharge cycles n of the battery of the electronic device.

[0122] The user uses the electronic device normally, and the electronic device records the number of charge and discharge cycles n of the battery.

[0123] S203, determine whether the battery charge and discharge cycle times n reaches the first set times n1. If yes, execute S204. If not, return to S202.

[0124] For example, in one example, the first set number n1=100.

[0125] S204: Adjust the initial discharge cut-off voltage based on the preset voltage increment.

[0126] When the battery charge and discharge cycle number n reaches the first set number n1, it indicates that the battery has decayed to a certain extent. The initial discharge cut-off voltage V0 can be adjusted based on the preset voltage increment ΔV, so that the discharge cut-off voltage is increased to (V0+ΔV).

[0127] S205, obtaining time period T i The initial charging voltage V i , calculate the average value V i .

[0128] The power management method of the embodiment of the present disclosure is started to be executed, in the time period T i In the process, the electronic device can obtain the battery voltage during each charging, that is, the initial charging voltage V i , and then calculate the average value V i .

[0129] S206, based on the average value V i The difference between the current discharge voltage and the historical discharge cut-off voltage determines the power consumption depth parameter.

[0130] It can be understood that the historical discharge cut-off voltage V i-1 That is the previous time period T i-1 The discharge cut-off voltage is obtained. i For the first time period, the historical discharge cut-off voltage V i-1 That is (V0+ΔV ) .

[0131] For the time period T i , calculate the average value V i With the historical discharge cut-off voltage V i-1 The difference (Vi -V i-1 ), the difference is the time period T i The corresponding power consumption depth parameter μ=(V i -V i-1 ).

[0132] S207: Determine whether the power usage depth parameter μ is greater than or equal to a preset parameter threshold μ0, if yes, execute S208. If no, execute S209.

[0133] S208, based on average value V i The difference between the current discharge cut-off voltage and the historical discharge cut-off voltage is reduced to the voltage value of the historical discharge cut-off voltage.

[0134] It can be understood that when the power consumption depth parameter μ is greater than or equal to the preset parameter threshold μ0, it means that the power consumption depth of the battery is low and the attenuation degree is light, so the historical discharge cut-off voltage V can be reduced. i-1 Voltage value.

[0135] In one example, the historical discharge cut-off voltage V i-1 Based on the reduction of μ=(V i -V i-1 ), that is, the discharge cut-off voltage after adjustment is (V i-1 -μ), the updated discharge cut-off voltage is the current time period T i The corresponding current discharge cut-off voltage is expressed as V Ti =(V i-1 -μ).

[0136] S209: Based on the set voltage value, increase the voltage value of the historical discharge cut-off voltage.

[0137] It can be understood that when the power consumption depth parameter μ is less than the preset parameter threshold μ0, it means that the power consumption depth of the battery is high and the attenuation degree is serious, so the historical discharge cut-off voltage V can be increased. i-1 Voltage value.

[0138] In one example, the historical discharge cut-off voltage V i-1 On the basis of, increase the set voltage value μ', that is, adjust the updated discharge cut-off voltage to (V i-1 +μ'), the updated discharge cut-off voltage is the current time period T i The corresponding current discharge cut-off voltage is expressed as V Ti =(V i-1 +μ').

[0139] The specific value of the set voltage value μ' can be set according to the negative electrode material of the battery. For example, for a silicon-carbon negative electrode battery of a mobile terminal, the set voltage value μ' can be 0.02V.

[0140] S210: Determine whether the number of battery charge and discharge cycles n reaches the second set number n2. If yes, execute S211. If not, return to S205.

[0141] In the disclosed embodiment, during the use of the electronic device, as the battery is cyclically charged and discharged, the electronic device can also determine whether the second set number n2 is reached according to the battery cyclic charge and discharge times n. For example, in one example, the second set number n2=800.

[0142] S211: Determine the larger value between the current discharge cut-off voltage and the preset upper limit value as the discharge cut-off voltage of the electronic device, and end the dynamic adjustment process.

[0143] The second set number n2 can be understood as the number of charge and discharge cycles at which the battery of the electronic device has entered the aging stage. It can be understood that if the battery charge and discharge cycle number n reaches the second set number n2, it means that the battery capacity decay is very serious at this time. In this case, the battery safety should be guaranteed first, so the current discharge cut-off voltage can be compared with the preset upper limit value V max A comparison is made, and then the larger value of the two is determined as the subsequent discharge cut-off voltage of the electronic device, and the aforementioned adjustment process for the discharge cut-off voltage is ended.

[0144] Preset upper limit value V max It indicates the upper limit of the battery discharge cut-off voltage. It is understood that the discharge cut-off voltage cannot be increased indefinitely, so it is necessary to set an upper limit value V for the discharge cut-off voltage. max In some implementations, taking a smartphone as an example, the preset upper limit value V max The value can be (V0+0.2V).

[0145] On the contrary, if the number of battery charge and discharge cycles n does not reach the second set number n2, the process may return to S205 and continue to wait for the next time period to repeat the above process of dynamically adjusting the discharge cut-off voltage, which will not be described in detail in the present disclosure.

[0146] In the above-mentioned S208-S209 method process, it is worth noting that when the historical discharge cut-off voltage V i-1 When adjusting and updating, the adjusted discharge cut-off voltage cannot be increased or decreased without limit, so it is necessary to set a preset upper limit value V of the discharge cut-off voltage for the battery in advance. max and preset lower limit value V min .

[0147] For example, in one example, the preset upper limit value V max =(V0+0.2V), preset lower limit V min =(V0+0.05V). Of course, those skilled in the art will appreciate that the preset upper limit value V max and preset lower limit value V min The value of is not limited to this example and can be selected according to the specific scenario requirements. This disclosure will not go into details.

[0148] Thus, in S208-S209, the historical discharge cut-off voltage V i-1 When increasing, it is necessary to compare whether the increased discharge cut-off voltage is higher than the preset upper limit value V max If so, then directly set the preset upper limit value V max Similarly, when the historical discharge cut-off voltage V i-1 When reducing, it is necessary to compare whether the reduced discharge cut-off voltage is lower than the preset lower limit V min If so, directly set the preset lower limit value V min Just determine it as the current discharge cut-off voltage.

[0149] From the above, it can be seen that in the embodiments of the present disclosure, the usage habits of users when using electronic devices are fully taken into consideration, and the battery discharge degree of the electronic device is quantified through the power usage depth parameter to accurately reflect the battery usage situation, and the battery discharge cut-off voltage is dynamically adjusted and updated based on the power usage depth parameter. On the basis of fully utilizing the battery capacity characteristics, safety hazards such as battery bulging are reduced and the battery life is improved.

[0150] In a second aspect, the embodiments of the present disclosure provide a power management device, which can be applied to electronic devices. The electronic devices of the present disclosure can be any type of device with cyclic charge and discharge capabilities, such as smart phones, tablet computers, wearable devices, laptop computers, smart home appliances, etc., and the present disclosure does not limit this.

[0151] like Figure 3 As shown, in some embodiments, the power management device of the example of the present disclosure includes:

[0152] The charging detection module 10 is configured to obtain the initial charging voltage of the electronic device each time it is charged in the current time period, where the initial charging voltage represents the battery voltage when the electronic device starts to charge;

[0153] The parameter determination module 20 is configured to determine a power usage depth parameter according to a difference between a charging initial voltage in a current time period and a historical discharge cut-off voltage, wherein the power usage depth parameter indicates a discharge degree of the battery in the current time period;

[0154] The voltage adjustment module 30 is configured to adjust and update the historical discharge cut-off voltage based on the power consumption depth parameter to obtain the current discharge cut-off voltage;

[0155] The power management module 40 is configured to interrupt the power supply of the battery to the electronic device when it is detected that the battery voltage of the electronic device is less than or equal to the current discharge cut-off voltage.

[0156] In some embodiments, the charging detection module 10 is configured to:

[0157] In response to the number of cycle charge and discharge times of the battery of the electronic device reaching a first set number, a process of obtaining a charging initial voltage each time the electronic device is charged in a current time period is executed.

[0158] In some embodiments, the charging detection module 10 is configured to:

[0159] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a first set number, the initial discharge cut-off voltage is adjusted based on a preset voltage increment.

[0160] In some embodiments, the parameter determination module 20 is configured to:

[0161] Determine the average value of the charging initial voltage in the current time period;

[0162] The power consumption depth parameter is determined based on the difference between the average value and the historical discharge cut-off voltage.

[0163] In some embodiments, the voltage adjustment module 30 is configured to:

[0164] In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on the difference between the charge initial voltage and the historical discharge cut-off voltage to obtain a current discharge cut-off voltage;

[0165] In response to the power usage depth parameter being less than a preset parameter threshold, the historical discharge cut-off voltage is adjusted and updated based on the set voltage value to obtain a current discharge cut-off voltage.

[0166] In some embodiments, the voltage adjustment module 30 is configured to:

[0167] In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, determining an average value of the charge initial voltage in the current time period, and reducing a voltage value of the historical discharge cut-off voltage based on a difference between the average value and the historical discharge cut-off voltage;

[0168] In response to the power usage depth parameter being less than a preset parameter threshold, the voltage value of the historical discharge cut-off voltage is increased based on the set voltage value.

[0169] In some embodiments, the voltage adjustment module 30 is configured to:

[0170] In the process of reducing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage being reduced to a preset lower limit value, determining the preset lower limit value as the voltage value of the current discharge cut-off voltage;

[0171] In the process of increasing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage increasing to a preset upper limit value, the preset upper limit value is determined as the voltage value of the current discharge cut-off voltage.

[0172] In some embodiments, the voltage adjustment module 30 is configured to:

[0173] In response to the number of charge and discharge cycles of the battery of the electronic device reaching a second set number, the larger value between the current discharge cut-off voltage and the preset upper limit value is determined as the discharge cut-off voltage of the electronic device, and the dynamic adjustment process ends.

[0174] From the above, it can be seen that in the embodiments of the present disclosure, the usage habits of users when using electronic devices are fully taken into consideration, and the battery discharge degree of the electronic device is quantified through the power usage depth parameter to accurately reflect the battery usage situation, and the battery discharge cut-off voltage is dynamically adjusted and updated based on the power usage depth parameter. On the basis of fully utilizing the battery capacity characteristics, safety hazards such as battery bulging are reduced and the battery life is improved.

[0175] In a third aspect, an embodiment of the present disclosure provides an electronic device, including:

[0176] Processor; and

[0177] A memory stores computer instructions, wherein the computer instructions are used to enable a processor to execute the method of any embodiment of the first aspect.

[0178] In a fourth aspect, an embodiment of the present disclosure provides a storage medium storing computer instructions, where the computer instructions are used to enable a computer to execute a method according to any embodiment of the first aspect.

[0179] Figure 4 The electronic device structure in some embodiments of the present disclosure is shown in FIG. Figure 4 Electronic devices according to some embodiments of the present disclosure are described.

[0180] Reference Figure 4, the electronic device 1800 may include one or more of the following components: a processing component 1802 , a memory 1804 , a power component 1806 , a multimedia component 1808 , an audio component 1810 , an input / output (I / O) interface 1812 , a sensor component 1816 , and a communication component 1818 .

[0181] The processing component 1802 generally controls the overall operation of the electronic device 1800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. In addition, the processing component 1802 may include one or more modules to facilitate interaction between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. For another example, the processing component 1802 may read executable instructions from a memory to implement electronic device related functions.

[0182] The memory 1804 is configured to store various types of data to support operations on the electronic device 1800. Examples of such data include instructions for any application or method operating on the electronic device 1800, contact data, phone book data, messages, pictures, videos, etc. The memory 1804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0183] The power supply component 1806 provides power to the various components of the electronic device 1800. The power supply component 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1800.

[0184] The multimedia component 1808 includes a display screen that provides an output interface between the electronic device 1800 and the user. In some embodiments, the multimedia component 1808 includes a front camera and / or a rear camera. When the electronic device 1800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0185] The audio component 1810 is configured to output and / or input audio signals. For example, the audio component 1810 includes a microphone (MIC), and when the electronic device 1800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1804 or sent via the communication component 1818. In some embodiments, the audio component 1810 also includes a speaker for outputting audio signals.

[0186] I / O interface 1812 provides an interface between processing component 1802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0187] The sensor assembly 1816 includes one or more sensors for providing various aspects of status assessment for the electronic device 1800. For example, the sensor assembly 1816 can detect the open / closed state of the electronic device 1800, the relative positioning of components, such as the display and keypad of the electronic device 1800, and the sensor assembly 1816 can also detect the position change of the electronic device 1800 or a component of the electronic device 1800, the presence or absence of user contact with the electronic device 1800, the orientation or acceleration / deceleration of the electronic device 1800, and the temperature change of the electronic device 1800. The sensor assembly 1816 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1816 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0188] The communication component 1818 is configured to facilitate wired or wireless communication between the electronic device 1800 and other devices. The electronic device 1800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1818 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0189] In an exemplary embodiment, the electronic device 1800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0190] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the embodiments. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A power management method, characterized in that: include: Acquire the initial charging voltage of the electronic device each time it is charged in the current time period, wherein the initial charging voltage represents the battery voltage when the electronic device starts to charge; Determine a power usage depth parameter according to a difference between the charging initial voltage in the current time period and the historical discharge cut-off voltage, wherein the power usage depth parameter indicates a discharge degree of the battery in the current time period; Adjust and update the historical discharge cut-off voltage based on the power consumption depth parameter to obtain a current discharge cut-off voltage; When it is detected that the battery voltage of the electronic device is less than or equal to the current discharge cut-off voltage, the power supply of the battery to the electronic device is interrupted.

2. The method according to claim 1, characterized in that The step of obtaining the initial charging voltage of the electronic device each time it is charged in the current time period includes: In response to the number of charge and discharge cycles of the battery of the electronic device reaching a first set number, the process of obtaining the charging initial voltage of the electronic device each time it is charged in the current time period is performed.

3. The method according to claim 2, characterized in that Also includes: In response to the number of charge and discharge cycles of the battery of the electronic device reaching a first set number, the initial discharge cut-off voltage is adjusted based on a preset voltage increment.

4. The method according to claim 1, characterized in that: The step of determining the power usage depth parameter according to the difference between the charging initial voltage in the current time period and the historical discharge cut-off voltage includes: determining an average value of the charging initial voltage in the current time period; The power usage depth parameter is determined based on a difference between the average value and the historical discharge cut-off voltage.

5. The method according to any one of claims 1 to 4, characterized in that: The adjusting and updating the historical discharge cut-off voltage according to the power consumption depth parameter to obtain the current discharge cut-off voltage includes: In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on a difference between the charge initial voltage and the historical discharge cut-off voltage to obtain a current discharge cut-off voltage; In response to the power usage depth parameter being less than a preset parameter threshold, the historical discharge cut-off voltage is adjusted and updated based on a set voltage value to obtain a current discharge cut-off voltage.

6. The method according to claim 5, characterized in that In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on a difference between the charge initial voltage and the historical discharge cut-off voltage, including: In response to the power usage depth parameter being greater than or equal to a preset parameter threshold, determining an average value of the charge initial voltage in the current time period, and reducing a voltage value of the historical discharge cut-off voltage based on a difference between the average value and the historical discharge cut-off voltage; In response to the power usage depth parameter being less than a preset parameter threshold, adjusting and updating the historical discharge cut-off voltage based on a set voltage value, including: In response to the power usage depth parameter being less than a preset parameter threshold, the voltage value of the historical discharge cut-off voltage is increased based on the set voltage value.

7. The method according to claim 6, characterized in that Also includes: In the process of reducing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage being reduced to a preset lower limit value, determining the preset lower limit value as the voltage value of the current discharge cut-off voltage; In the process of increasing the voltage value of the historical discharge cut-off voltage, in response to the voltage value of the historical discharge cut-off voltage increasing to a preset upper limit value, the preset upper limit value is determined as the voltage value of the current discharge cut-off voltage.

8. The method according to claim 1, characterized in that: Also includes: In response to the number of charge and discharge cycles of the battery of the electronic device reaching a second set number, the larger value between the current discharge cut-off voltage and the preset upper limit value is determined as the discharge cut-off voltage of the electronic device, and the dynamic adjustment process ends.

9. A power management device, characterized in that: include: A charging detection module, configured to obtain an initial charging voltage of the electronic device each time it is charged in a current time period, wherein the initial charging voltage represents a battery voltage when the electronic device starts charging; a parameter determination module, configured to determine a power usage depth parameter according to a difference between the charging initial voltage and the historical discharge cut-off voltage in a current time period, wherein the power usage depth parameter indicates a discharge degree of the battery in the current time period; A voltage adjustment module is configured to adjust and update the historical discharge cut-off voltage based on the power consumption depth parameter to obtain a current discharge cut-off voltage; The power management module is configured to interrupt the battery from supplying power to the electronic device when it is detected that the battery voltage of the electronic device is less than or equal to the current discharge cut-off voltage.

10. An electronic device, characterized in that: include: processor; as well as A memory storing computer instructions, wherein the computer instructions are used to enable the processor to execute the method according to any one of claims 1 to 8.

11. A storage medium, characterized in that: Computer instructions are stored, and the computer instructions are used to make a computer execute the method according to any one of claims 1 to 8.

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