A method of prolonging battery life and system thereof

Abstract

The application provides a method and system for prolonging the service life of a battery, comprising: calculating the designed service life of the battery, and calculating the service data Kn at n voltage stages according to the designed service life; counting the battery capacity of the battery charging and discharging, and confirming the completion of one charging and discharging cycle according to the battery capacity; confirming that the last charging and discharging cycle is the charging and discharging at the n-th voltage stage, and the corresponding charging and discharging cycle number Gn is increased by 1; judging whether the charging and discharging cycle number Gn at the n-th voltage stage reaches the service data Kn; if not, setting the condition for allowing the charging and discharging at the n-th voltage stage, wherein n is a natural number. The technical scheme provided by the application can effectively prolong the service life of the battery.

Description

Technical Field

[0001] This invention relates to the field of communications, and more particularly to a method and system for extending battery life. Background Technology

[0002] During mobile device use, battery life is affected by both natural degradation and poor user habits, both of which accelerate battery decline. Most mobile devices currently use lithium batteries, which have limited capacity due to space constraints. To support long-term use, lithium batteries require frequent charging and discharging. During charging and discharging, changes occur in the battery's internal materials, leading to a decrease in its charge storage capacity and potentially causing the battery to become unusable.

[0003] Different lithium batteries have different internal materials and manufacturing methods, so the modeling methods for different models of lithium batteries are different, and the degree of impact on lifespan varies greatly. Existing technologies are basically based on the lithium battery itself to build battery life models to predict how much life the battery has left. However, it is impossible to judge whether this lifespan is declining or accelerating during use, let alone effectively extend the battery's lifespan.

[0004] Therefore, developing a technology that effectively extends battery life is a goal that the industry urgently needs to improve. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a method and system for extending battery life. By establishing a battery life model and digitizing the model data, and dynamically adjusting battery usage parameters based on the statistical results of the data, the beneficial technical effect of effectively extending battery life is achieved.

[0006] This invention proposes a method for extending battery life, comprising: calculating the designed lifespan of the battery, and calculating usage data Kn at n voltage stages based on the designed lifespan;

[0007] The battery capacity during charging and discharging is calculated, and one charge-discharge cycle is confirmed based on the battery capacity.

[0008] Confirm that the previous charge-discharge cycle was at the nth voltage stage, and increase the corresponding charge-discharge cycle number Gn by 1;

[0009] Determine whether the number of charge-discharge cycles Gn in the nth voltage stage has reached the usage data Kn;

[0010] If the condition is not met, then the conditions for allowing charging and discharging in the nth voltage stage are set, where n is a natural number.

[0011] Preferably, the step of calculating the design life of the battery and calculating the usage data Kn at n voltage stages based on the design life includes:

[0012] Multiple battery samples were selected for cyclic charging and discharging tests.

[0013] Battery cycle life data at different voltages was obtained based on the test results.

[0014] Preferably, the step of calculating the design life of the battery and calculating the usage data Kn at n voltage stages based on the design life includes:

[0015] The battery cycle life data is used for modeling and analysis to obtain the battery loss ΔLn for each charge and discharge under different voltages, where ΔLn=(CFull-Cs) / L, CFull is the total battery capacity at the current voltage, Cs is the standard value of battery life depletion, and L is the number of battery life cycles when the battery capacity reaches Cs during charge and discharge at the current voltage. The battery loss ΔLn for each charge and discharge under different voltages includes ΔL1, ΔL2, ΔL3…, ΔLn;

[0016] The design life LD of the battery is calculated based on the battery loss ΔLn during each charge and discharge at different voltages.

[0017] The designed lifespan LD of the battery is divided into n voltage stages, and the usage data under different voltage stages include K1, K2, K3, ..., Kn, where K1+K2+K3+...+Kn=LD;

[0018] The values ​​of K1, K2, ..., Kn are calculated using the formula K1*ΔL1+K2*ΔL2+K3*ΔL3+…+Kn*ΔLn=CFull-Cs.

[0019] Preferably, the step of determining whether the number of charge-discharge cycles Gn in the nth voltage stage reaches the usage data Kn includes:

[0020] Determine whether the number of charge / discharge cycles G1 in the first voltage stage has reached the usage data K1;

[0021] If not, then set the conditions for allowing charging and discharging in the first voltage stage;

[0022] If the target is reached, then determine whether the number of charge / discharge cycles G2 in the second voltage stage has reached the data K2.

[0023] If not, then set the conditions for allowing charging and discharging in the second voltage stage;

[0024] If the threshold is reached, the process continues until the number of charge / discharge cycles Gn in the nth voltage stage is determined to be the data Kn used.

[0025] Preferably, the method further includes:

[0026] If the number of charge-discharge cycles Gn in the nth voltage stage reaches the usage data Kn, then the conditions for allowing charge-discharge in the nth voltage stage are set.

[0027] After setting the conditions for allowing charging and discharging at the nth voltage stage each time, return to continue executing the steps of statistically analyzing the battery capacity during charging and discharging, and confirming the completion of one charge-discharge cycle based on the battery capacity.

[0028] On the other hand, the present invention also provides a system for extending battery life, wherein the system includes:

[0029] A calculation module is used to calculate the designed lifespan of the battery and, based on the designed lifespan, calculate the usage data Kn at n voltage stages.

[0030] The statistics module is used to count the battery capacity during charging and discharging, and to confirm the completion of one charge-discharge cycle based on the battery capacity.

[0031] The increment module is used to confirm that the previous charge-discharge cycle was in the nth voltage stage, and the corresponding charge-discharge cycle number Gn is increased by 1.

[0032] The judgment module is used to determine whether the number of charge-discharge cycles Gn in the nth voltage stage has reached the usage data Kn;

[0033] The setting module is used to set the conditions for allowing charging and discharging in the nth voltage stage if the conditions are not met, where n is a natural number.

[0034] Preferably, the calculation module is further used for:

[0035] Multiple battery samples were selected for cyclic charging and discharging tests.

[0036] Battery cycle life data at different voltages was obtained based on the test results.

[0037] Preferably, the calculation module is further used for:

[0038] The battery cycle life data is used for modeling and analysis to obtain the battery loss ΔLn for each charge and discharge under different voltages, where ΔLn=(CFull-Cs) / L, CFull is the total battery capacity at the current voltage, Cs is the standard value of battery life depletion, and L is the number of battery life cycles when the battery capacity reaches Cs during charge and discharge at the current voltage. The battery loss ΔLn for each charge and discharge under different voltages includes ΔL1, ΔL2, ΔL3…, ΔLn;

[0039] The design life LD of the battery is calculated based on the battery loss ΔLn during each charge and discharge at different voltages.

[0040] The designed lifespan LD of the battery is divided into n voltage stages, and the usage data under different voltage stages include K1, K2, K3, ..., Kn, where K1+K2+K3+...+Kn=LD;

[0041] The values ​​of K1, K2, ..., Kn are calculated using the formula K1*ΔL1+K2*ΔL2+K3*ΔL3+…+Kn*ΔLn=CFull-Cs.

[0042] Preferably, the determination module is further used for:

[0043] Determine whether the number of charge / discharge cycles G1 in the first voltage stage has reached the usage data K1;

[0044] If not, then set the conditions for allowing charging and discharging in the first voltage stage;

[0045] If the target is reached, then determine whether the number of charge / discharge cycles G2 in the second voltage stage has reached the data K2.

[0046] If not, then set the conditions for allowing charging and discharging in the second voltage stage;

[0047] If the threshold is reached, the process continues until the number of charge / discharge cycles Gn in the nth voltage stage is determined to be the data Kn used.

[0048] Preferably, the determination module is further used for:

[0049] If the number of charge-discharge cycles Gn in the nth voltage stage reaches the usage data Kn, then the conditions for allowing charge-discharge in the nth voltage stage are set.

[0050] After setting the conditions for allowing charging and discharging at the nth voltage stage each time, return to continue executing the statistical analysis of the battery capacity during charging and discharging, and confirm the completion of one charge-discharge cycle based on the battery capacity.

[0051] In another aspect, the present invention also provides a communication device, wherein the communication device includes a processor and a memory, the memory storing a plurality of computer instructions, and the processor calling the plurality of computer instructions to execute the method for extending battery life as described above.

[0052] The technical solution provided by this invention has the following advantages:

[0053] (1) By establishing a battery lifespan model and digitizing the model data, and by dynamically adjusting the battery usage parameters based on the statistical results, the beneficial technical effect of effectively extending the battery lifespan has been achieved.

[0054] (2) The overall lifespan of the communication device is extended by extending the battery lifespan, especially for mobile communication devices. After the technical solution of this invention is used in the mobile communication device, the value of each stage can be optimized so that the user does not perceive the reduction in usage time, which greatly improves and protects the battery lifespan and safety. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of a method for extending battery life according to an embodiment of the present invention;

[0056] Figure 2 This is a schematic diagram of battery charge-discharge life data curves measured at 4.3V, 4.25V, and 4.2V respectively, according to one embodiment of the present invention;

[0057] Figure 3 In one embodiment of the present invention, Figure 2 A comparative diagram showing the three curves placed in the same coordinate system;

[0058] Figure 4 According to one embodiment of the present invention Figure 1 The diagram shows the battery life usage path obtained after a series of steps. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0060] The following will provide a detailed description of a method for extending battery life provided by the present invention.

[0061] Please see Figure 1 This is a flowchart of a method for extending battery life according to an embodiment of the present invention.

[0062] In step S11, the design life of the battery is calculated, and the usage data Kn at n voltage stages is calculated based on the design life.

[0063] In this embodiment, step S11 specifically includes:

[0064] Multiple battery samples were selected for cyclic charging and discharging tests.

[0065] Battery cycle life data at different voltages was obtained based on the test results.

[0066] In this embodiment, the more battery samples selected, the more accurate the data from the cycle test. For ease of explanation, this invention only uses three battery samples as an example. The charge-discharge life data curves at 4.3V, 4.25V, and 4.2V were measured using the same test method, as shown below. Figure 2 As shown, the vertical axis represents the battery capacity percentage, and the horizontal axis represents the number of charge-discharge cycles. The decreasing trend of battery charge-discharge life data at 4.3V, 4.25V, and 4.2V is shown below. Figure 2 As shown.

[0067] In this embodiment, the battery charge / discharge life data curves at 4.3V, 4.25V, and 4.2V are compared on a single graph. Figure 3 As shown in the figure, the battery charge-discharge life curves at three different voltage ranges of 4.3V, 4.25V and 4.2V were measured under the same test method. The data in the figure shows that the higher the charge-discharge voltage, the faster the battery life decays.

[0068] In this embodiment, step S11 further includes:

[0069] Battery cycle life data is used for modeling and analysis to obtain the battery loss ΔLn for each charge and discharge under different voltages, where ΔLn=(CFull-Cs) / L, CFull is the total battery capacity at the current voltage, Cs is the standard value of battery life depletion, and L is the number of battery life cycles when the battery capacity reaches Cs during charge and discharge at the current voltage. The battery loss ΔLn for each charge and discharge under different voltages includes ΔL1, ΔL2, ΔL3…, ΔLn;

[0070] The design lifespan LD of the battery is calculated based on the battery loss ΔLn during each charge and discharge cycle at different voltages.

[0071] The battery's design lifespan LD is divided into n voltage stages, and the usage data under different voltage stages include K1, K2, K3, ..., Kn, where K1+K2+K3+...+Kn=LD;

[0072] The values ​​of K1, K2, ..., Kn are calculated using the formula K1*ΔL1+K2*ΔL2+K3*ΔL3+…+Kn*ΔLn=CFull-Cs.

[0073] In this embodiment, ΔL1 represents the battery loss per charge / discharge cycle under the first voltage segment, ΔL2 represents the battery loss per charge / discharge cycle under the second voltage segment, ΔL3 represents the battery loss per charge / discharge cycle under the third voltage segment, ..., ΔLn represents the battery loss per charge / discharge cycle under the nth voltage segment. This can be based on... Figure 3 The battery cycle life data under different voltage ranges shown are used to obtain ΔL1, ΔL2, ΔL3, ..., ΔLn.

[0074] In this embodiment, there may be multiple solutions for the values ​​of K1, K2, ..., Kn. This invention selects the solution that best matches the user's usage habits.

[0075] In step S12, the battery capacity during charging and discharging is calculated, and the completion of one charge-discharge cycle is confirmed based on the battery capacity.

[0076] In this embodiment, when the communication device is using a battery, it can use a fuel gauge to count the total battery capacity currently used and determine that one charge-discharge cycle has been completed.

[0077] In step S13, it is confirmed that the previous charge-discharge cycle was in the nth voltage stage, and the corresponding charge-discharge cycle number Gn is increased by 1.

[0078] In step S14, it is determined whether the number of charge-discharge cycles G1 in the first voltage stage has reached the usage data K1.

[0079] In this embodiment, if the condition is not met, the conditions for allowing charging and discharging in the first voltage stage are set, and then the process returns to continue executing the step S12 of statistically analyzing the battery capacity during charging and discharging, and confirming the completion of one charge-discharge cycle based on the battery capacity.

[0080] If the target is reached, then in step S15, it is determined whether the number of charge-discharge cycles G2 in the second voltage stage has reached the usage data K2.

[0081] In this embodiment, if the condition is not met, the conditions for allowing the second voltage stage to charge and discharge are set, and then the process returns to continue executing the step S12 of statistically analyzing the battery capacity during charging and discharging, and confirming the completion of one charge-discharge cycle based on the battery capacity.

[0082] If the condition is met, continue the judgment process sequentially, as shown in step S16.

[0083] In step S17, it is determined whether the number of charge-discharge cycles Gn in the nth voltage stage has reached the usage data Kn.

[0084] In this embodiment, if the condition is not met, the condition for allowing charging and discharging in the nth voltage stage is set, and then the process returns to continue executing the step S12 of statistically analyzing the battery capacity during charging and discharging, and confirming the completion of one charge-discharge cycle based on the battery capacity.

[0085] In this embodiment, if the number of charge-discharge cycles Gn of the nth voltage stage reaches the usage data Kn, then the condition for allowing the nth voltage stage to charge and discharge is set, and then the process returns to continue executing the step S12 of statistically analyzing the battery capacity of the battery charge and discharge, and confirming the completion of one charge-discharge cycle based on the battery capacity.

[0086] In this embodiment, after setting the conditions for allowing charging and discharging at the nth voltage stage each time, the process returns to continue executing the step S12 of statistically analyzing the battery capacity during charging and discharging, and confirming the completion of one charging and discharging cycle based on the battery capacity.

[0087] In this embodiment, the purpose of extending battery life can be achieved by following the above steps, wherein the battery life usage path is as follows: Figure 4 As shown, Figure 4 According to one embodiment of the present invention Figure 1 The diagram shows the battery life path obtained after a series of steps. Before implementing the method of this invention, the battery capacity would drop to 80% of its original capacity after 400 charge-discharge cycles. After implementing the method of this invention, the battery capacity can withstand 900 charge-discharge cycles when it drops to 80% of its original capacity, which greatly extends the battery life.

[0088] Please see Figure 1 This is a schematic diagram of a system for extending battery life according to an embodiment of the present invention.

[0089] In this embodiment, the system 10 for extending battery life includes: a calculation module 11, a statistics module 12, an increment module 13, a judgment module 14, and a setting module 15.

[0090] The calculation module 11 is used to calculate the design life of the battery and calculate the usage data Kn at n voltage stages based on the design life.

[0091] In this embodiment, the calculation module 11 is further configured to:

[0092] Multiple battery samples were selected for cyclic charging and discharging tests.

[0093] Battery cycle life data at different voltages was obtained based on the test results.

[0094] In this embodiment, the more battery samples selected, the more accurate the data from the cycle test. For ease of explanation, this invention only uses three battery samples as an example. The charge-discharge life data curves at 4.3V, 4.25V, and 4.2V were measured using the same test method, as shown below. Figure 2 As shown.

[0095] In this embodiment, the battery charge / discharge life data curves at 4.3V, 4.25V, and 4.2V are compared on a single graph. Figure 3 As shown in the figure, the battery charge-discharge life curves at three different voltage ranges of 4.3V, 4.25V and 4.2V were measured under the same test method. The data in the figure shows that the higher the charge-discharge voltage, the faster the battery life decays.

[0096] In this embodiment, the calculation module 11 is further configured to:

[0097] Battery cycle life data is used for modeling and analysis to obtain the battery loss ΔLn for each charge and discharge under different voltages, where ΔLn=(CFull-Cs) / L, CFull is the total battery capacity at the current voltage, Cs is the standard value of battery life depletion, and L is the number of battery life cycles when the battery capacity reaches Cs during charge and discharge at the current voltage. The battery loss ΔLn for each charge and discharge under different voltages includes ΔL1, ΔL2, ΔL3…, ΔLn;

[0098] The design lifespan LD of the battery is calculated based on the battery loss ΔLn during each charge and discharge cycle at different voltages.

[0099] The battery's design lifespan LD is divided into n voltage stages, and the usage data under different voltage stages include K1, K2, K3, ..., Kn, where K1+K2+K3+...+Kn=LD;

[0100] The values ​​of K1, K2, ..., Kn are calculated using the formula K1*ΔL1+K2*ΔL2+K3*ΔL3+…+Kn*ΔLn=CFull-Cs.

[0101] In this embodiment, there may be multiple solutions for the values ​​of K1, K2, ..., Kn. This invention selects the solution that best matches the user's usage habits.

[0102] The statistics module 12 is used to count the battery capacity during charging and discharging, and to confirm the completion of one charge-discharge cycle based on the battery capacity.

[0103] The increment module 13 is used to confirm that the previous charge-discharge cycle was in the nth voltage stage of the charge-discharge cycle, and the corresponding charge-discharge cycle number Gn is increased by 1.

[0104] The judgment module 14 is used to determine whether the number of charge-discharge cycles Gn in the nth voltage stage has reached the data Kn.

[0105] In this embodiment, the determination module 14 is further configured to:

[0106] Determine whether the number of charge / discharge cycles G1 in the first voltage stage has reached the usage data K1;

[0107] If not, then set the conditions for allowing charging and discharging in the first voltage stage;

[0108] If the target is reached, then determine whether the number of charge / discharge cycles G2 in the second voltage stage has reached the data K2.

[0109] If not, then set the conditions for allowing charging and discharging in the second voltage stage;

[0110] If the threshold is reached, the process continues until the number of charge / discharge cycles Gn in the nth voltage stage is reached using the data Kn.

[0111] In this embodiment, the determination module 14 is further configured to:

[0112] If the number of charge / discharge cycles Gn in the nth voltage stage reaches the data Kn, then set the conditions that allow the nth voltage stage to charge / discharge.

[0113] After setting the conditions for allowing charging and discharging at the nth voltage stage each time, return to continue executing the statistics of battery capacity during charging and discharging, and confirm the completion of one charge-discharge cycle based on the battery capacity.

[0114] Setting module 15 is used to set the conditions for allowing charging and discharging in the nth voltage stage if the conditions are not met, where n is a natural number.

[0115] In addition, the present invention also provides a communication device, wherein the communication device includes a processor and a memory, the memory storing a plurality of computer instructions, and the processor calling the plurality of computer instructions to execute the above-described method for extending battery life.

[0116] The technical solution provided by this invention has the following advantages:

[0117] (1) By establishing a battery lifespan model and digitizing the model data, and by dynamically adjusting the battery usage parameters based on the statistical results, the beneficial technical effect of effectively extending the battery lifespan has been achieved.

[0118] (2) The overall lifespan of the communication device is extended by extending the battery lifespan, especially for mobile communication devices. After the technical solution of this invention is used in the mobile communication device, the value of each stage can be optimized so that the user does not perceive the reduction in usage time, which greatly improves and protects the battery lifespan and safety.

[0119] It is worth noting that the units included in the above embodiments are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy distinction between each other and are not used to limit the scope of protection of the present invention.

[0120] Furthermore, those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware, and the corresponding program can be stored in a computer-readable storage medium, such as ROM / RAM, disk, or optical disk.

[0121] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. The embodiments exemplified by the present invention cannot exhaustively describe all implementation methods. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention. All documents mentioned in this invention are incorporated herein by reference as if a single document were independently incorporated by reference.

Claims

1. A method for extending battery life, characterized in that, The method includes: Calculate the design lifespan of the battery, and calculate the usage data Kn at n voltage stages based on the design lifespan; The battery capacity during charging and discharging is calculated, and one charge-discharge cycle is confirmed based on the battery capacity. Confirm that the previous charge-discharge cycle was at the nth voltage stage, and increase the corresponding charge-discharge cycle number Gn by 1; Determine whether the number of charge-discharge cycles Gn in the nth voltage stage has reached the usage data Kn; If not, then set the conditions for allowing charging and discharging in the nth voltage stage, where n is a natural number; The steps of calculating the design lifespan of the battery and calculating the usage data Kn at n voltage stages based on the design lifespan include: Multiple battery samples were selected for cyclic charging and discharging tests. Based on the test results, obtain battery cycle life data at different voltages; The steps of calculating the design lifespan of the battery and calculating the usage data Kn at n voltage stages based on the design lifespan include: The battery cycle life data is used for modeling and analysis to obtain the battery loss ΔLn for each charge and discharge under different voltages, where ΔLn=(CFull-Cs) / L, CFull is the total battery capacity at the current voltage, Cs is the standard value of battery life depletion, and L is the number of battery life cycles when the battery capacity reaches Cs during charge and discharge at the current voltage. The battery loss ΔLn for each charge and discharge under different voltages includes ΔL1, ΔL2, ΔL3…, ΔLn; The design life LD of the battery is calculated based on the battery loss ΔLn during each charge and discharge at different voltages. The designed lifespan LD of the battery is divided into n voltage stages, and the usage data under different voltage stages include K1, K2, K3, ..., Kn, where K1+K2+K3+...+Kn=LD; The values ​​of K1, K2, ..., Kn are calculated using the formula K1*ΔL1+K2*ΔL2+K3*ΔL3+…+Kn*ΔLn=CFull-Cs.

2. The method for extending battery life as described in claim 1, characterized in that, The step of determining whether the number of charge-discharge cycles Gn in the nth voltage stage has reached the usage data Kn includes: Determine whether the number of charge / discharge cycles G1 in the first voltage stage has reached the usage data K1; If not, then set the conditions for allowing charging and discharging in the first voltage stage; If the target is reached, then determine whether the number of charge / discharge cycles G2 in the second voltage stage has reached the data K2. If not, then set the conditions for allowing charging and discharging in the second voltage stage; If the threshold is reached, the process continues until the number of charge / discharge cycles Gn in the nth voltage stage is determined to be the data Kn used.

3. The method for extending battery life as described in claim 2, characterized in that, The method further includes: If the number of charge-discharge cycles Gn in the nth voltage stage reaches the usage data Kn, then the conditions for allowing charge-discharge in the nth voltage stage are set. After setting the conditions for allowing charging and discharging at the nth voltage stage each time, return to continue executing the steps of statistically analyzing the battery capacity during charging and discharging, and confirming the completion of one charge-discharge cycle based on the battery capacity.

4. A system for extending battery life, characterized in that, The system includes: A calculation module is used to calculate the designed lifespan of the battery and, based on the designed lifespan, calculate the usage data Kn at n voltage stages. The statistics module is used to count the battery capacity during charging and discharging, and to confirm the completion of one charge-discharge cycle based on the battery capacity. The increment module is used to confirm that the previous charge-discharge cycle was in the nth voltage stage, and the corresponding charge-discharge cycle number Gn is increased by 1. The judgment module is used to determine whether the number of charge-discharge cycles Gn in the nth voltage stage has reached the usage data Kn; The setting module is used to set the conditions for allowing charging and discharging in the nth voltage stage if the conditions are not met, where n is a natural number; The computing module is also used for: Multiple battery samples were selected for cyclic charging and discharging tests. Based on the test results, obtain battery cycle life data at different voltages; The computing module is also used for: The battery cycle life data is used for modeling and analysis to obtain the battery loss ΔLn for each charge and discharge under different voltages, where ΔLn=(CFull-Cs) / L, CFull is the total battery capacity at the current voltage, Cs is the standard value of battery life depletion, and L is the number of battery life cycles when the battery capacity reaches Cs during charge and discharge at the current voltage. The battery loss ΔLn for each charge and discharge under different voltages includes ΔL1, ΔL2, ΔL3…, ΔLn; The design life LD of the battery is calculated based on the battery loss ΔLn during each charge and discharge at different voltages. The designed lifespan LD of the battery is divided into n voltage stages, and the usage data under different voltage stages include K1, K2, K3, ..., Kn, where K1+K2+K3+...+Kn=LD; The values ​​of K1, K2, ..., Kn are calculated using the formula K1*ΔL1+K2*ΔL2+K3*ΔL3+…+Kn*ΔLn=CFull-Cs.

5. The system for extending battery life as described in claim 4, characterized in that, The judgment module is also used for: Determine whether the number of charge / discharge cycles G1 in the first voltage stage has reached the usage data K1; If not, then set the conditions for allowing charging and discharging in the first voltage stage; If the target is reached, then determine whether the number of charge / discharge cycles G2 in the second voltage stage has reached the data K2. If not, then set the conditions for allowing charging and discharging in the second voltage stage; If the threshold is reached, the process continues until the number of charge / discharge cycles Gn in the nth voltage stage is determined to be the data Kn used.

6. The system for extending battery life as described in claim 5, characterized in that, The judgment module is also used for: If the number of charge-discharge cycles Gn in the nth voltage stage reaches the usage data Kn, then the conditions for allowing charge-discharge in the nth voltage stage are set. After setting the conditions for allowing charging and discharging at the nth voltage stage each time, return to continue executing the statistical analysis of the battery capacity during charging and discharging, and confirm the completion of one charge-discharge cycle based on the battery capacity.

7. A communication device, characterized in that, The communication device includes a processor and a memory, the memory storing a plurality of computer instructions, the processor invoking the plurality of computer instructions to execute the method for extending battery life as described in any one of claims 1-3.

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