Electronic atomization device and method for determining residual capacity of battery cell of electronic atomization device

Abstract

The invention relates to a method for determining the residual capacity of a battery cell of an electronic atomization device and the electronic atomization device, and the method comprises the steps: determining the output energy of the battery cell based on the discharge duration of the battery cell, determining the input energy of the battery cell based on the charge duration of the battery cell, and determining the residual capacity of the battery cell according to the output energy, the input energy and a preset capacity upper limit value. Under the condition of not increasing extra hardware, the residual capacity of the battery cell is calculated by utilizing the characteristics of the capacity of the battery cell, and the residual capacity of the battery cell is determined through the output energy obtained based on the discharge duration of the battery cell and the input energy obtained based on the charging duration, so that the real-time energy change of the battery cell can be reflected; the method is not influenced by the detection time and the frequent change of the discharge power of the battery cell, and the accuracy of determining the residual capacity of the battery cell can be improved.

Description

Technical Field

[0001] This application relates to the field of atomization device technology, and in particular to a method for determining the remaining capacity of the battery cell in an electronic atomization device and an electronic atomization device. Background Technology

[0002] With the improvement of people's living standards, the application of electronic atomizing devices is becoming increasingly widespread. Electronic atomizing devices use a built-in battery to power a heating element, raising its temperature and thus atomizing the aerosol matrix to meet user needs. Furthermore, to allow users to easily monitor the battery level, electronic atomizing devices are usually equipped with a display screen to show the remaining charge.

[0003] To display the remaining battery level, the first step is to detect the remaining charge of the battery cell. The traditional method involves measuring the cell's open-circuit voltage before it discharges to the heating element, then comparing this voltage to a pre-set voltage meter reading to determine the remaining charge. However, this method is susceptible to voltage fluctuations after a high-current discharge, meaning the measured voltage is highly dependent on the timing of the measurement and therefore inaccurate. This inaccuracy affects the accuracy of the remaining charge reading, leading to an inaccurate display of the remaining battery capacity on the e-cigarette device. Summary of the Invention

[0004] Therefore, it is necessary to address the technical problem that traditional methods for detecting the remaining battery capacity of a battery cell result in low accuracy of the obtained remaining battery capacity, and to provide a method and device for determining the remaining battery capacity of an electronic atomizing device that can improve the accuracy of the determined remaining battery capacity.

[0005] In a first aspect, this application provides a method for determining the remaining capacity of a battery cell in an electronic atomizing device, including:

[0006] The output energy of the battery cell is determined based on the discharge duration of the battery cell.

[0007] The input energy of the battery cell is determined based on the charging time of the battery cell.

[0008] The remaining capacity of the battery cell is determined based on the output energy, the input energy, and the preset capacity upper limit.

[0009] In one embodiment, the output energy includes heating output energy, and determining the output energy of the battery cell based on the discharge duration of the battery cell includes:

[0010] When the battery cell discharges to the heating element, the heating output power and the corresponding heating duration are determined.

[0011] The output energy of the battery cell is determined based on the heating output power and the heating duration.

[0012] In one embodiment, the method for determining the remaining capacity of the battery cell in an electronic atomizing device further includes:

[0013] When the battery cell discharges to the heating element, the voltage and resistance across the heating element are obtained;

[0014] The heating output power is determined based on the voltage and resistance at both ends of the heating element.

[0015] In one embodiment, the output energy also includes power consumption energy, and the method for determining the remaining capacity of the electronic atomizing device's battery cell further includes:

[0016] The output energy is determined based on the heating output energy and the power consumption energy.

[0017] In one embodiment, the method for determining the remaining capacity of the battery cell in an electronic atomizing device further includes:

[0018] When the battery cell discharges to the power consumption device, the power consumption duration is determined;

[0019] The power consumption energy is determined based on the power consumption of the power-consuming device and the power consumption duration.

[0020] In one embodiment, the output energy further includes static power consumption energy, and the method for determining the remaining capacity of the battery cell of the electronic atomizing device further includes: determining the output energy based on the heating output energy, the power consumption energy, and the static power consumption energy.

[0021] In one embodiment, the method for determining the remaining capacity of the battery cell in an electronic atomizing device further includes: determining the static duration when the electronic atomizing device is in a static operating mode; and determining the static power consumption based on the static power consumption and the static duration.

[0022] In one embodiment, determining the input energy of the battery cell based on the charging time of the battery cell includes:

[0023] Determine the charging stage of the battery cell;

[0024] The input energy of the battery cell is determined based on the charging stage and the charging duration corresponding to the charging stage.

[0025] In one embodiment, the charging phase includes a constant current charging phase, and determining the input energy of the battery cell based on the charging phase and the charging duration corresponding to the charging phase includes:

[0026] Based on a preset constant current charging model, the input energy of the battery cell is determined according to the charging duration and charging parameters during the constant current charging phase.

[0027] In one embodiment, the preset constant current charging model characterizes the correspondence between the charging parameters, charging time, and input energy of the battery cell.

[0028] In one embodiment, the charging phase includes a constant voltage charging phase, and determining the input energy of the battery cell based on the charging phase and the charging duration corresponding to the charging phase includes:

[0029] Based on a preset constant voltage charging model, the input energy of the battery cell is determined according to the charging duration and charging parameters during the constant voltage charging phase.

[0030] In one embodiment, the constant voltage charging model characterizes the relationship between the charging time and the charging current of the battery cell.

[0031] In one embodiment, the method for determining the remaining capacity of the battery cell in an electronic atomizing device further includes:

[0032] If a discharge command is received when the battery cell is in the constant voltage charging stage, the battery cell capacity at the time of termination of charging is recorded.

[0033] After the discharge is complete, obtain the current cell capacity;

[0034] The current discharge duration is determined based on the cell capacity at the time of charging termination and the current cell capacity.

[0035] The charging duration of the battery cell in the constant voltage charging stage is updated based on the current discharge duration, and the input energy of the battery cell is determined based on the preset constant voltage charging model, the charging duration of the battery cell in the constant voltage charging stage, and the charging parameters.

[0036] Secondly, this application also provides an electronic atomizing device, including an atomizing device body, a memory, and a processor. The atomizing device body contains a battery cell, the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0037] The output energy of the battery cell is determined based on the discharge duration of the battery cell.

[0038] The input energy of the battery cell is determined based on the charging time of the battery cell.

[0039] The remaining capacity of the battery cell is determined based on the output energy, the input energy, and the preset capacity upper limit.

[0040] The aforementioned method for determining the remaining capacity of the battery cell in an electronic atomizing device, and the electronic atomizing device itself, determine the output energy of the battery cell based on its discharge duration, and the input energy based on its charging duration. Then, based on the output energy, input energy, and a preset capacity upper limit, the remaining capacity of the battery cell is determined. Without adding additional hardware, this method utilizes the characteristics of the battery cell's capacity to calculate the remaining capacity. By determining the remaining capacity using the output energy obtained from the discharge duration and the input energy obtained from the charging duration, it reflects the real-time energy changes of the battery cell, is unaffected by the timing of detection or frequent changes in the battery cell's discharge power, and thus improves the accuracy of the determined remaining capacity. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic block diagram of the electronic atomizing device in one embodiment;

[0043] Figure 2 This is a schematic diagram of the structure of the charging module in one embodiment;

[0044] Figure 3 This is a schematic block diagram of the heating circuit in one embodiment;

[0045] Figure 4 This is a flowchart illustrating a method for determining the remaining capacity of a battery cell in an electronic atomizing device, as shown in one embodiment.

[0046] Figure 5 This is a flowchart illustrating the steps for determining the output energy of a battery cell based on its discharge duration in one embodiment.

[0047] Figure 6 This is a flowchart illustrating a method for determining heating output power in one embodiment;

[0048] Figure 7 This is a schematic block diagram of the resistance sampling circuit in one embodiment;

[0049] Figure 8 This is a flowchart illustrating a method for determining power consumption in one embodiment;

[0050] Figure 9 This is a flowchart illustrating a method for determining static power consumption in one embodiment;

[0051] Figure 10 This is a flowchart illustrating the steps for determining the input energy of a battery cell based on its charging time, as shown in one embodiment.

[0052] Figure 11 This is a schematic diagram illustrating the changes in current and input energy during the charging process of a battery cell in one embodiment.

[0053] Figure 12 This is a schematic diagram of the fitting results corresponding to the constant voltage charging stage of the battery cell in one embodiment;

[0054] Figure 13 This is a schematic block diagram of a device for determining the remaining capacity of the battery cell in an electronic atomizing device, as shown in one embodiment. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0056] The method for determining the remaining battery capacity of an electronic atomizing device provided in this application embodiment can be executed by a processor inside the electronic atomizing device. The processor is communicatively connected to a memory, which stores a computer program. When the processor executes the computer program, it implements the steps of the method for determining the remaining battery capacity of an electronic atomizing device provided in this application. The memory and processor can be integrated into a controller inside the electronic atomizing device, and the method for determining the remaining battery capacity is executed by the controller inside the electronic atomizing device. Alternatively, the method for determining the remaining battery capacity can also be executed by a terminal or server communicatively connected to the electronic atomizing device. For example, it can be executed by a processor within the terminal or server. The terminal can be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. The server can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0057] For example, such as Figure 1 As shown, the electronic atomizing device includes a processor, a battery cell, a charging module, a heating circuit, and a heating element. The processor is connected to the charging module, the battery cell, and the heating circuit. The charging module is also connected to an external power source and the battery cell. The heating circuit is connected to the heating element. Figure 2 As shown, the charging module includes a charging chip. The processor controls whether the charging chip charges the battery cell. When the battery cell is low in charge and an external power source is available, the processor enables the charging chip to charge the battery cell. When the battery cell is fully charged or the external power source is removed, the processor will disable the charging chip. Figure 3As shown, the heating circuit includes a MOSFET. When heating is required, the processor controls the MOSFET to turn on, putting it in a conducting state, and the battery cell outputs current to the heating element, heating it. When heating needs to be turned off, the processor controls the MOSFET to turn off, and the branch containing the battery cell and heating element is in an open circuit state, with no current flowing to heat the heating element. Thus, the processor can control the heating and charging process of the electronic atomizing device.

[0058] In one exemplary embodiment, such as Figure 4 As shown, a method for determining the remaining capacity of a battery cell in an electronic atomizing device is provided. Taking the execution of this method by a processor inside the electronic atomizing device as an example, the method includes steps 402 to 406. Wherein:

[0059] Step 402: Determine the output energy of the battery cell based on the discharge duration of the battery cell.

[0060] During battery cell discharge, the processor times the discharge duration. This can be understood as the battery cell's accumulated output energy up to the current moment.

[0061] The battery cell can discharge to components in the electronic atomizing device, enabling these components to function properly. For example, the battery cell can discharge to a heating element via a conductive heating circuit, energizing the heating element and causing it to heat up. Furthermore, when the electronic atomizing device also includes a display screen, the battery cell can also discharge to the display screen, powering it to display relevant content. It is understood that in other embodiments, the battery cell can also discharge to other components, which is not limited here.

[0062] The method of determining the output energy of a battery cell based on its discharge duration is not unique. For example, a processor can obtain the discharge duration and discharge power of the battery cell, and use the integral of the discharge power over the discharge duration as the output energy of the battery cell. It is understood that in other embodiments, the output energy of the battery cell can be determined in other ways based on its discharge duration, as long as those skilled in the art believe it is feasible.

[0063] Step 404: Determine the input energy of the battery cell based on the charging time of the battery cell.

[0064] During battery cell charging, the processor keeps track of the charging time. This can be understood as the battery cell accumulating input energy up to the current moment.

[0065] The input energy of the battery cell is mainly increased through charging. When an external power source is plugged in, and the battery cell is low in charge or receives a charging command, the processor will enable the charging chip to charge the battery cell.

[0066] The method of determining the input energy of a battery cell based on its charging time is not unique. For example, the processor can obtain the charging time and charging power of the battery cell, and use the integral of the charging power over the charging time period as the input energy of the battery cell. It is understood that in other embodiments, the input energy of the battery cell can be determined in other ways based on its charging time, as long as those skilled in the art believe it is feasible.

[0067] Step 406: Determine the remaining capacity of the battery cell based on the output energy, input energy, and preset capacity upper limit.

[0068] The output energy is the energy consumed when the battery cell discharges, and the input energy is the energy connected when the battery cell charges. The preset upper limit of capacity is the maximum capacity value of the battery cell as stated at the time of manufacture.

[0069] Specifically, there is no single way to determine the remaining capacity of a battery cell based on its output energy, input energy, and a preset capacity limit. For example, one could first determine the remaining capacity by calculating the difference between the output and input energy. Then, the ratio of this remaining capacity to the preset capacity limit would be used as the remaining capacity of the battery cell. Generally, the remaining capacity of a battery cell is expressed as a percentage.

[0070] In the aforementioned method for determining the remaining capacity of the battery cell in an electronic atomizing device, the output energy of the battery is determined based on its discharge duration, and the input energy is determined based on its charging duration. Then, the remaining capacity of the battery is determined based on the output energy, input energy, and a preset capacity upper limit. Without adding additional hardware, this method utilizes the characteristics of the battery cell's capacity to calculate the remaining capacity. By determining the remaining capacity using the output energy obtained from the discharge duration and the input energy obtained from the charging duration, it reflects the real-time energy changes of the battery cell and is unaffected by the timing of detection or frequent changes in the battery's discharge power, thus improving the accuracy of the determined remaining capacity.

[0071] In one exemplary embodiment, the output energy includes heating output energy, such as... Figure 5 As shown, step 402 includes steps 502 to 504. Wherein:

[0072] Step 502: When the battery cell discharges to the heating element, determine the heating output power and the corresponding heating time.

[0073] Among them, heating output energy refers to the energy consumed by the battery cell when it discharges to the heating element. Heating output energy is one of the main output energies of the battery cell.

[0074] When the battery cell discharges to the heating element, on one hand, the processor acquires the heating parameters and determines the heating output power based on these parameters. The type of heating parameters is not limited; for example, it could be heating voltage and heating current, with the product of the heating voltage and heating current used as the heating output power. On the other hand, the processor times the duration of the battery cell discharging to the heating element to obtain the corresponding heating duration.

[0075] Step 504: Determine the output energy of the battery cell based on the heating output power and heating duration.

[0076] The method of determining the output energy of a battery cell based on heating output power and heating duration is not unique. In this embodiment, after obtaining the heating output power and heating duration, the integral of the heating output power over the heating duration is taken as the output energy of the battery cell. It is understood that in other embodiments, the output energy of the battery cell can be determined using other methods, as long as those skilled in the art believe it is feasible.

[0077] In this embodiment, the output energy includes heating output energy. By determining the heating output power and the corresponding heating duration when the battery cell discharges to the heating element, the output energy of the battery cell is determined based on the heating output power and the heating duration. The heating output energy, which accounts for the largest proportion of the output energy of the battery cell, can be obtained. The calculation is simple and easy to implement.

[0078] In one exemplary embodiment, such as Figure 6 As shown, the method for determining the heating output power includes steps 602 and 604.

[0079] Step 602: While the battery cell is discharging to the heating element, obtain the voltage and resistance at both ends of the heating element.

[0080] When the battery cell discharges to the heating element, the heating element is sampled to obtain the voltage and resistance across the heating element.

[0081] Specifically, the voltage and resistance across the heating element can be sampled using a resistance sampling circuit. This circuit is connected to both the heating element and the processor. For example... Figure 7 As shown, taking a resistance sampling circuit including a resistor and a sampling MOSFET (i.e., MOSFET2) as an example, when sampling is required to obtain the voltage and resistance across the heating element, the processor controls MOSFET2 to turn on. Simultaneously, the processor obtains the voltage across the resistor and the battery cell voltage, calculates the resistance of the heating element based on the voltage divider principle, and obtains the voltage across the heating element.

[0082] Step 604: Determine the heating output power based on the voltage and resistance at both ends of the heating element.

[0083] For example, the heating output power can be determined based on the voltage and resistance across the heating element using the formula P=V. 2 / R is determined. Here, V is the voltage across the heating element, and R is the resistance of the heating element. It is understood that in other embodiments, the heating output power can be determined in other ways, as long as those skilled in the art deem it feasible.

[0084] In this embodiment, when the battery cell discharges to the heating element, the voltage and resistance at both ends of the heating element are obtained. The heating output power is determined based on the voltage and resistance at both ends of the heating element, and the heating output power of the current heating element can be obtained. The corresponding heating output power can be obtained for different heating elements, which has strong universality and accurate calculation results.

[0085] In an exemplary embodiment, the output energy also includes the power consumption energy. When determining the output energy of the battery cell, the method for determining the remaining capacity of the battery cell in an electronic atomizing device further includes the step of determining the output energy based on the heating output energy and the power consumption energy.

[0086] Here, power consumption refers to the energy consumed by the battery cell discharging to devices other than the heating element. Power consumption is also one of the output energies of the battery cell. The type of devices other than the heating element is not limited and is determined according to the structure of the electronic atomizing device. For example, if the electronic atomizing device also includes a display screen, the devices other than the heating element also include the display screen, and the power consumption includes the energy consumed by the battery cell discharging to the display screen.

[0087] In this embodiment, when determining the output energy of the battery cell, not only the heating output energy but also the power consumption energy is considered, which can improve the accuracy of the output energy.

[0088] In one exemplary embodiment, such as Figure 8 As shown, the method for determining power consumption includes steps 802 and 804.

[0089] Step 802: Determine the power consumption duration when the battery cell is discharged to the power consumption device.

[0090] Specifically, when the battery cell discharges to the power consumption device, the processor times the duration of the battery cell discharge to the power consumption device to obtain the power consumption duration.

[0091] Step 804: Determine the power consumption energy based on the power consumption and power consumption duration of the power consumption device.

[0092] Furthermore, the processor obtains the power consumption of the power devices based on their type and quantity. The power consumption of the power devices can be detected through relevant structures and then transmitted to the processor. The processor then determines the total energy consumption based on the power consumption and power consumption duration of the power devices.

[0093] The method for determining power consumption energy based on the power consumption and power consumption duration of a power-consuming device is not unique. For example, in one embodiment, after obtaining the power consumption and power consumption duration of the power-consuming device, the integral of the power consumption of the power-consuming device over the power consumption duration is taken as the power consumption energy.

[0094] In a scalable manner, the power consumption of a power-consuming device can be a fixed value, eliminating the need for real-time monitoring. When acquiring the power consumption of a power-consuming device, power consumption data for the corresponding type of device can be pre-tested and input into memory. Then, when the processor needs to calculate power consumption energy, it records the operating time of the power-consuming device as the power consumption duration using an internal time-recording function, and then uses the product of the power consumption and the power consumption duration as the power consumption energy.

[0095] In this embodiment, when the battery cell discharges to the power consumption device, the power consumption duration is determined. Based on the power consumption of the power consumption device and the power consumption duration, the power consumption energy is determined. Combining the power consumption of the power consumption device and the power consumption duration yields the power consumption energy that most closely approximates the current power consumption device, improving the accuracy of the power consumption energy estimate.

[0096] In an exemplary embodiment, the output energy also includes static power consumption energy. When determining the output energy of the battery cell, the method for determining the remaining capacity of the battery cell in the electronic atomizing device further includes the step of: determining the output energy based on the heating output energy, power consumption energy, and static power consumption energy.

[0097] Static power consumption refers to the energy loss of each component of the electronic atomizing device when it is powered on but not in operation, under static operating mode. Static operating mode refers to the mode where the device is powered on but not in operation.

[0098] Static power consumption is also one of the output energies of a battery cell. Depending on the structure of the e-cigarette device, the components that are powered on but not in operation differ when the e-cigarette device is in static operating mode. For example, the processor can obtain the static power consumption of each component that is powered on but not in operation when the e-cigarette device is in static operating mode, based on the current structure of the e-cigarette device, and then add up the static power consumption of each component to obtain the static power consumption.

[0099] In this embodiment, when determining the output energy of the battery cell, not only the heating output energy and the power consumption energy are considered, but also the static power consumption energy, which can improve the accuracy of the battery cell's output energy.

[0100] In one exemplary embodiment, such as Figure 9 As shown, the method for determining static power consumption includes steps 902 and 904.

[0101] Step 902: When the electronic atomizing device is in static working mode, determine the static duration.

[0102] The static working mode refers to a mode in which the device is powered on but not in operation. When the e-cigarette device is in the static working mode, the processor times the duration of the static working mode to obtain the static duration.

[0103] Step 904: Determine the static power consumption based on the static power consumption and static duration.

[0104] The processor determines the static power consumption based on static power consumption and static duration. Static power consumption can be detected by relevant structures and then transmitted to the processor. The processor then determines the total power consumption based on the power consumption of the power-consuming devices and the duration of power consumption.

[0105] The static power consumption energy can be determined based on the static power consumption and static duration by integrating the static power consumption over the static duration.

[0106] In a scalable manner, static power consumption can be a fixed value, eliminating the need for real-time monitoring. When acquiring static power consumption, it can be obtained through pre-testing of the corresponding e-cigarette structure, followed by inputting the data into memory. Alternatively, since static power consumption is relatively low, its impact on the battery's output energy is minimal. Therefore, the static power consumption of different e-cigarettes can be directly set to a fixed value, which can be directly retrieved during use, offering convenience.

[0107] In this embodiment, when the electronic atomizing device is in static operating mode, the static duration is determined, and the static power consumption is determined based on the static power consumption and the static duration. Combining the static power consumption and the static duration yields the static power consumption that most closely reflects the current electronic atomizing device structure, thus improving the accuracy of the static power consumption.

[0108] In one exemplary embodiment, such as Figure 10 As shown, step 404 includes steps 1002 and 1004.

[0109] Step 1002: Determine the charging stage of the battery cell.

[0110] During the entire charging process of a battery cell, it may be charged using a single charging mode, in which case the number of charging stages remains constant, differing only in charging time. However, to meet diverse charging needs, different charging stages are typically incorporated into the entire charging process, with each stage employing a different charging mode to satisfy varying charging requirements.

[0111] Step 1004: Determine the input energy of the battery cell based on the charging stage and the charging duration corresponding to the charging stage.

[0112] The charging modes may differ depending on the charging stage. For example, the charging stage may include a constant voltage charging stage or a constant current charging stage. In the constant voltage charging stage, the cell maintains a relatively constant charging voltage. In the constant current charging stage, the cell maintains a relatively constant charging current.

[0113] Therefore, when determining the input energy of a battery cell, the charging stage of the cell is first identified, and then the corresponding charging duration is obtained. It should be understood that the charging stage of a battery cell does not specifically refer to the current charging stage, but also includes all previous charging stages the cell has been in. When determining the input energy of a battery cell based on the charging stage and its corresponding charging duration, the charging duration of each historical charging stage should also be obtained. Then, the energy corresponding to each historical charging stage and the current historical stage should be calculated, and the energies of each historical charging stage and the current historical stage should be added together to obtain the total input energy of the battery cell.

[0114] In this embodiment, the charging stage of the battery cell is determined, and the input energy of the battery cell is determined based on the charging stage and the charging duration corresponding to the charging stage. By determining the input energy of the battery cell in different charging stages, the accuracy of the obtained input energy of the battery cell can be improved.

[0115] In an exemplary embodiment, the charging stage includes a constant current charging stage, and step 1004 includes the step of: determining the input energy of the battery cell based on a preset constant current charging model, according to the charging duration and charging parameters of the battery cell in the constant current charging stage.

[0116] Specifically, the preset constant current charging model is derived based on the characteristics of the battery cell's charging mode during the constant current charging phase. During the constant current charging phase, the charging current of the battery cell remains at a fixed current, and the charging voltage increases as the current is applied.

[0117] The specific type of the preset constant current charging model is not unique. For example, in one embodiment, the preset constant current charging model characterizes the correspondence between the charging parameters, charging time, and input energy of the battery cell. The charging parameters of the battery cell include charging current and charging voltage, and the preset constant current charging model can be: Among them, E charge For the input energy of the battery cell, I charge T is the charging current of the battery cell. charge V represents the charging time of the battery cell. bat This refers to the charging voltage of the battery cell.

[0118] Based on the aforementioned preset constant current charging model, during the constant current charging stage, the charging current is a known value. After obtaining the charging voltage and charging time, the input energy of the battery cell can be calculated. It is understood that in other embodiments, the preset constant current charging model can also be other models, as long as those skilled in the art deem it feasible.

[0119] In this embodiment, the charging stage includes a constant current charging stage. Based on a preset constant current charging model, the input energy of the battery cell is determined according to the charging time and charging parameters of the battery cell in the constant current charging stage. This can obtain the input energy of the battery cell that better meets the charging characteristics of the constant current charging stage and improve the accuracy of the input energy.

[0120] In an exemplary embodiment, the charging stage includes a constant voltage charging stage, and step 1004 includes the step of: determining the input energy of the battery cell based on a preset constant voltage charging model, according to the charging duration and charging parameters of the battery cell in the constant voltage charging stage.

[0121] Specifically, the preset constant voltage charging model is derived based on the characteristics of the battery cell's charging mode during the constant voltage charging phase. During the constant voltage charging phase, the battery cell's charging voltage remains at a fixed voltage, while the charging current gradually decreases until charging is complete.

[0122] The specific type of the preset constant-voltage charging model is not unique. During the constant-voltage charging stage, the charging current begins to decrease, and this decrease is non-linear. Therefore, a preset constant-voltage charging model can be obtained by acquiring data from the constant-voltage charging stage and then performing data fitting. For example, in one embodiment, the constant-voltage charging model characterizes the relationship between the charging time and the charging current of the battery cell. A preset constant-voltage charging model could be y = 8E - 17x 6 -7E-13x 5 +2E-9x 4 -7E-6x 3 +0.0045x 2 -2.8303x+978.51. Where x is the charging time, y is the charging current, and En represents 10 to the power of n, for example, 2E-9 represents 2×10⁻⁹. -9 .

[0123] Based on the aforementioned preset constant voltage charging model, during the constant voltage charging stage, the charging voltage is a known value. Once the charging time is obtained, the charging current can be calculated. Then, the input energy of the battery cell can be obtained based on the charging current, charging voltage, and charging time. For example, the integral of the product of the charging current and charging voltage over the charging time can be used as the input energy of the battery cell. It is understood that in other embodiments, the preset constant current charging model can also be other models, as long as those skilled in the art deem it feasible.

[0124] In this embodiment, the charging stage includes a constant voltage charging stage. Based on a preset constant voltage charging model, the input energy of the battery cell is determined according to the charging time and charging parameters of the battery cell in the constant voltage charging stage. This can obtain the input energy of the battery cell that better meets the charging characteristics of the constant voltage charging stage and improve the accuracy of the input energy.

[0125] In an exemplary embodiment, the method for determining the remaining capacity of the battery cell in an electronic atomizing device further includes the following steps: when the battery cell is in the constant voltage charging stage, if a discharge command is received, record the battery cell capacity at the time of termination of charging; after the discharge is completed, obtain the current battery cell capacity; determine the current discharge duration based on the battery cell capacity at the time of termination of charging and the current battery cell capacity; update the charging duration of the battery cell in the constant voltage charging stage based on the current discharge duration, and execute a preset constant voltage charging model to determine the input energy of the battery cell based on the charging duration and charging parameters of the battery cell in the constant voltage charging stage.

[0126] Specifically, if the battery cell is in the constant voltage charging stage and receives a discharge command, the processor records the battery cell capacity at the time of charging termination, denoted as A. Simultaneously, the processor records the discharge duration, and after the discharge ends, obtains the current battery cell capacity, denoted as B. Then, based on the battery cell capacity at the time of charging termination and the current battery cell capacity, the current discharge duration is determined; for example, the difference between A and B can be used as the battery cell's output energy. Then, according to the relationship between output energy and discharge duration in the above embodiment, the current discharge duration is obtained.

[0127] Next, the processor updates the charging duration of the battery cell in the constant voltage charging phase based on the current discharge duration. For example, the current moment can be subtracted from the current discharge duration to obtain the charging duration of the constant voltage charging phase. Using this obtained charging duration as the current starting point, the processor then executes a step based on a preset constant voltage charging model to determine the input energy of the battery cell based on the charging duration and charging parameters in the constant voltage charging phase. This makes the input energy obtained from the preset constant voltage charging model more accurate.

[0128] In this embodiment, when the battery cell is in the constant voltage charging stage, if a discharge command is received, the battery cell capacity at the time of termination of charging is recorded; after the discharge is completed, the current battery cell capacity is obtained; the current discharge duration is determined based on the battery cell capacity at the time of termination of charging and the current battery cell capacity; the charging duration of the battery cell in the constant voltage charging stage is updated based on the current discharge duration, and the input energy of the battery cell is determined based on the preset constant voltage charging model, according to the charging duration and charging parameters of the battery cell in the constant voltage charging stage, so that the input energy obtained based on the preset constant voltage charging model is more accurate.

[0129] To better understand the above embodiments, a detailed explanation will be provided below with reference to a specific embodiment.

[0130] Traditional methods of determining remaining battery power by measuring the cell's open-circuit voltage and comparing it with a pre-set voltage meter have several drawbacks: First, after a high-current discharge, the cell voltage undergoes a rebound recovery process. Measuring the voltage too early will yield inaccurate data, leading to incorrect remaining battery power assessment. Conversely, measuring too late will cause the display to update the battery level too late, resulting in a poor user experience. Second, some current e-cigarettes have power switching capabilities, leading to variations in vaping power and discharge rate. This can cause different cell voltage rebounds, easily resulting in incorrect remaining battery power assessments. Third, differences exist between e-cigarettes. Due to their structure or sampling issues, the output power may not be entirely consistent, with a ±10% power output error. These errors lead to inconsistent discharge rates, resulting in different open-circuit voltages for different e-cigarette devices. Fourth, because the cell voltage rebounds over time after discharge, the displayed battery level may increase after the device has been stored for a period of time, leading to a poor user experience. To resolve this issue, additional code design is required. Fifth, the discharge curve of a lithium battery cell is not linear; the voltage drops rapidly at the beginning and end, but decreases slowly at the rated voltage. Therefore, if the voltmeter is not carefully adjusted, users will perceive the e-cigarette device as experiencing very rapid power loss at the beginning and end, and very slow power loss in the middle. An adjusted voltmeter can alleviate this problem, but it requires significant time, manpower, and resources for testing and adjustment. Sixth, measuring the cell's open-circuit voltage and then comparing it to a preset voltmeter limits the accuracy of the power display. For example, a preset voltmeter with 20 voltage reference points is needed for 5% display accuracy; if the display accuracy is increased to 1%, the number of reference points will increase to 100. This poses a significant challenge to storage space and subsequent debugging.

[0131] Based on this, the inventors have proposed a method for determining the remaining capacity of the battery cell in an electronic atomizing device. In one embodiment, the remaining battery capacity is calculated in real time by utilizing the characteristics of the battery cell without adding any additional hardware.

[0132] Specifically, the output energy of a battery cell is mainly divided into heating output energy, static power consumption energy, and power consumption energy from other components. Heating output energy is obtained by integrating the power output during heating with the time elapsed, thus calculating the energy output during the heating period.

[0133]

[0134] The output power can be obtained by using a resistance sampling circuit to obtain the voltage and resistance across the heating element, and the power currently acting on the heating element can be calculated using the following formula:

[0135]

[0136] Static power consumption is also obtained by integrating the power consumption during static mode with time to obtain the energy output during static mode. Static power consumption can be obtained in advance through testing of the system's power consumption during static mode, and then input into the memory and set as a fixed parameter. Static duration can be recorded by the processor's internal time recording function to record the duration for which the system enters static mode.

[0137]

[0138] Other devices, such as LED lights or displays, can be used to obtain the energy output during use through integration. The power consumption of these devices is generally a fixed value. Therefore, the power consumption data can be input into the memory in advance through testing. Then, the processor records the working time of these devices through the internal time recording function, thereby calculating the power consumption of these devices.

[0139] The input energy to a battery cell is primarily increased through charging to expand its remaining capacity. For example... Figure 11 As shown, the entire charging cycle of a battery cell mainly consists of a constant current stage and a constant voltage stage. In the constant current stage, the charging current remains at a fixed level, and the voltage rises as the current increases. In the constant voltage stage, the battery cell voltage remains at a fixed level, and the charging current gradually decreases until charging is complete.

[0140] During the constant current phase, since the charging current is relatively fixed, the energy input to the battery cell can be obtained by multiplying the charging current by the current cell voltage and then by the time.

[0141]

[0142] During the constant voltage stage, the charging current begins to decrease, and the decrease is non-linear. Therefore, the charging current of the battery cell at different time points during the constant voltage stage can be obtained by performing time fitting on the data.

[0143] like Figure 12 As shown, once the battery cell enters the constant voltage charging stage, the processor can calculate the current charging current using the above fitting formula by inputting the current charging time. Then, it calculates the energy input to the battery cell by integrating the charging current and time. The fitting formula needs to be pre-fitted using the charging curve of the battery cell, and the parameters in the fitting formula are pre-input into the memory for calculation.

[0144] If the user terminates charging during the constant voltage phase and performs suction, the system will record the cell capacity at the time of termination and the cell capacity after suction. When charging resumes, the system can use the recorded cell capacity to determine which point on the fitted curve it is currently on, thus determining the input energy.

[0145] The calculation methods and approaches described in the above embodiments constitute an energy model. The method for determining the remaining capacity of the battery cell in an electronic atomizing device provided in this application has the following advantages:

[0146] First, since the energy model does not have a rebound process and simply uses formulas for calculation, it is not affected by the passage of time. Once the processor has completed the calculation, it can display the amount of electricity. Therefore, the calculation can be performed as soon as the discharge ends.

[0147] Secondly, the energy model performs calculations by detecting the power acting on the heating element in real time. Therefore, even if the power acting on the heating element is inconsistent from second to second, the energy model can still calculate the energy output by the battery cell.

[0148] Third, the energy model will also detect the power acting on each heating element in real time. Even if there are differences in output power between electronic atomizing devices, the processor can still integrate the current actual output power and time to calculate the output energy.

[0149] Fourth, since the energy model does not have a rebound process, it will calculate the energy lost during static periods by integrating static power consumption and time, and update the remaining capacity of the battery cell in real time.

[0150] Fifth, the energy model calculates the remaining battery capacity based on the amount of electricity lost during each discharge. Assuming that the amount of electricity output is consistent with each discharge, the remaining battery capacity calculated by the energy model will be smooth, resulting in a good and accurate display.

[0151] Sixth, the accuracy of the power display will not affect the energy model. The energy model only needs the energy when fully charged and the current remaining energy to calculate the remaining capacity of the battery cell.

[0152] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0153] Based on the same inventive concept, this application also provides an electronic atomizing device battery remaining capacity determination device for implementing the above-described method for determining the remaining capacity of an electronic atomizing device battery. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations of one or more embodiments of the electronic atomizing device battery remaining capacity determination device provided below can be found in the limitations of the electronic atomizing device battery remaining capacity determination method described above, and will not be repeated here.

[0154] In one exemplary embodiment, such as Figure 13 As shown, a device for determining the remaining capacity of an electronic atomizing device's battery cell is provided, comprising: an output energy determination module 1302, an input energy determination module 1304, and a capacity determination module 1306, wherein:

[0155] The output energy determination module 1302 is used to determine the output energy of the battery cell based on the discharge duration of the battery cell.

[0156] The input energy determination module 1304 is used to determine the input energy of the battery cell based on the charging time of the battery cell.

[0157] The capacity determination module 1306 determines the remaining capacity of the battery cell based on the output energy, input energy, and preset capacity upper limit.

[0158] In one embodiment, the output energy includes heating output energy, and the output energy determination module is further configured to determine the heating output power and the corresponding heating duration when the battery cell discharges to the heating element; and to determine the output energy of the battery cell based on the heating output power and the heating duration.

[0159] In one embodiment, the electronic atomizing device cell remaining capacity determination device further includes a heating output power determination module, which is used to obtain the voltage and resistance value across the heating element when the cell is discharged to the heating element; and determine the heating output power based on the voltage and resistance value across the heating element.

[0160] In one embodiment, the output energy also includes power consumption energy, and the output energy determination module is further configured to determine the output energy based on the heating output energy and the power consumption energy.

[0161] In one embodiment, the remaining capacity determination device for the electronic atomizing device battery cell further includes a power consumption module, which is used to determine the power consumption duration when the battery cell discharges to a power consumption device; and to determine the power consumption energy based on the power consumption of the power consumption device and the power consumption duration.

[0162] In one embodiment, the output energy also includes static power consumption energy, and the output energy determination module is further configured to determine the output energy based on the heating output energy, power consumption energy, and static power consumption energy.

[0163] In one embodiment, the device for determining the remaining capacity of the battery cell in an electronic atomizing device further includes a static power consumption module, which is used to determine the static duration when the electronic atomizing device is in a static operating mode; and to determine the static power consumption energy based on the static power consumption and the static duration.

[0164] In one embodiment, the input energy determination module is further configured to determine the charging stage of the battery cell; and determine the input energy of the battery cell based on the charging stage and the charging duration corresponding to the charging stage.

[0165] In one embodiment, the charging phase includes a constant current charging phase, and the input energy determination module is further used to determine the input energy of the battery cell based on a preset constant current charging model, according to the charging duration and charging parameters of the battery cell in the constant current charging phase.

[0166] In one embodiment, the charging stage includes a constant voltage charging stage, and the input energy determination module is further used to determine the input energy of the battery cell based on a preset constant voltage charging model, according to the charging duration and charging parameters of the battery cell in the constant voltage charging stage.

[0167] In one embodiment, the input energy determination module is further configured to, when the cell is in the constant voltage charging stage, if a discharge command is received, record the cell capacity at the time of termination of charging; after the discharge is completed, obtain the current cell capacity; determine the current discharge duration based on the cell capacity at the time of termination of charging and the current cell capacity; update the charging duration of the cell in the constant voltage charging stage based on the current discharge duration; and execute a preset constant voltage charging model to determine the input energy of the cell based on the charging duration and charging parameters of the cell in the constant voltage charging stage.

[0168] The various modules in the aforementioned electronic atomization device's battery remaining capacity determination device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0169] In one exemplary embodiment, an electronic atomizing device is provided, including an atomizing device body, a memory, and a processor. The atomizing device body is provided with a battery cell, and the memory stores a computer program. When the processor executes the computer program, it implements the steps in the above-described method embodiments.

[0170] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0171] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0172] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for determining the remaining capacity of a battery cell in an electronic atomizing device, characterized in that, The method includes: The output energy of the battery cell is determined based on the discharge duration of the battery cell. The input energy of the battery cell is determined based on the charging time of the battery cell. The remaining capacity of the battery cell is determined based on the output energy, the input energy, and the preset capacity upper limit.

2. The method according to claim 1, characterized in that, The output energy includes heating output energy, and determining the output energy of the battery cell based on the discharge duration of the battery cell includes: When the battery cell discharges to the heating element, the heating output power and the corresponding heating duration are determined. The output energy of the battery cell is determined based on the heating output power and the heating duration.

3. The method according to claim 2, characterized in that, The method further includes: When the battery cell discharges to the heating element, the voltage and resistance across the heating element are obtained; The heating output power is determined based on the voltage and resistance at both ends of the heating element.

4. The method according to claim 2, characterized in that, The output energy also includes power consumption energy, and the method further includes: The output energy is determined based on the heating output energy and the power consumption energy.

5. The method according to claim 4, characterized in that, The method further includes: When the battery cell discharges to the power consumption device, the power consumption duration is determined; The power consumption energy is determined based on the power consumption of the power-consuming device and the power consumption duration.

6. The method according to claim 4, characterized in that, The output energy also includes static power consumption energy, and the method further includes: The output energy is determined based on the heating output energy, the power consumption energy, and the static power consumption energy.

7. The method according to claim 1, characterized in that, Determining the input energy of the battery cell based on its charging time includes: Determine the charging stage of the battery cell; The input energy of the battery cell is determined based on the charging stage and the charging duration corresponding to the charging stage.

8. The method according to claim 7, characterized in that, The charging phase includes a constant current charging phase. Determining the input energy of the battery cell based on the charging phase and the corresponding charging duration includes: Based on a preset constant current charging model, the input energy of the battery cell is determined according to the charging duration and charging parameters of the battery cell in the constant current charging stage; the preset constant current charging model characterizes the correspondence between the charging parameters, charging duration and input energy of the battery cell. And / or, The charging phase includes a constant voltage charging phase. Determining the input energy of the battery cell based on the charging phase and the corresponding charging duration includes: Based on a preset constant voltage charging model, the input energy of the battery cell is determined according to the charging time and charging parameters of the battery cell in the constant voltage charging stage; the constant voltage charging model characterizes the correspondence between the charging time and the charging current of the battery cell.

9. The method according to claim 8, characterized in that, The method further includes: If a discharge command is received when the battery cell is in the constant voltage charging stage, the battery cell capacity at the time of termination of charging is recorded. After the discharge is complete, obtain the current cell capacity; The current discharge duration is determined based on the cell capacity at the time of charging termination and the current cell capacity. The charging duration of the battery cell in the constant voltage charging stage is updated based on the current discharge duration, and the input energy of the battery cell is determined based on the preset constant voltage charging model, the charging duration of the battery cell in the constant voltage charging stage, and the charging parameters.

10. An electronic atomizing device, characterized in that, The device includes an atomizing device body, a memory, and a processor. The atomizing device body contains a battery cell, and the memory stores a computer program. The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 9.

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