Batteries, circuits, devices, charging methods, and discharging methods

Abstract

This application discloses a battery, circuit, device, charging method, and discharging method, relating to the field of electronic device technology. The battery includes a stacked and wound positive electrode, a separator, a first negative electrode, and a second negative electrode. The first negative electrode, positive electrode, and separator form a first battery cell, and the second negative electrode, positive electrode, and separator form a second battery cell. The first and second negative electrodes have different impedances under the same parameters, including at least one of temperature and voltage. This application can simultaneously meet the requirements of electronic devices for short charging times and long battery life.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, specifically relating to a battery, circuit, device, charging method, and discharging method. Background Technology

[0002] With the rapid development of intelligent electronic devices, the demands on battery life are increasing. Improving the energy density of current batteries is a crucial research direction to meet these demands. Currently, increasing battery energy density can be achieved by changing the material of the negative electrode, for example, replacing traditional graphene negative electrodes with silicon negative electrodes. However, this change in negative electrode material may present other challenges due to the material's characteristics. For instance, under different temperature and voltage conditions, the chemical resistance of the negative electrode increases, leading to longer charging times.

[0003] It is clear that how to simultaneously meet the needs of electronic devices for short charging time and long battery life is an urgent problem to be solved. Summary of the Invention

[0004] This application aims to provide a battery, circuit, device, charging method, and discharging method that can simultaneously meet the needs of electronic devices for short charging time and long battery life.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a battery, comprising:

[0007] The positive electrode, the separator, the first negative electrode, and the second negative electrode are stacked and wound together.

[0008] The first negative electrode, the positive electrode, and the separator form the first battery cell; the second negative electrode, the positive electrode, and the separator form the second battery cell.

[0009] The first negative electrode and the second negative electrode have different impedances under the same parameters, including at least one of temperature and voltage.

[0010] Secondly, embodiments of this application provide a charging and discharging circuit, including:

[0011] First battery cell module and second battery cell module;

[0012] A parameter acquisition module is connected to the first battery cell module and the second battery cell module. The parameter acquisition module includes at least one of a fuel gauge module and a temperature sensing module. The fuel gauge module is used to acquire the voltage of the first battery cell module and the second battery cell module, and the temperature sensing module is used to acquire the temperature of the first battery cell module and the second battery cell module.

[0013] A switch control module, connected to the first battery cell module and the second battery cell module, is used to control the connection state of the first battery cell module and the second battery cell module;

[0014] The charging and discharging module is connected to the parameter acquisition module and the switch control module. It is used to generate control signals based on the parameters acquired by the parameter acquisition module and send the control signals to the switch control module so that the switch control module controls one of the first battery cell module and the second battery cell module to connect and the other to disconnect.

[0015] Thirdly, embodiments of this application propose an electronic device, including a battery as described in the first aspect, or a charging and discharging circuit as described in the second aspect.

[0016] Fourthly, embodiments of this application propose a charging method, including:

[0017] Obtain the parameters corresponding to the first and second battery cells;

[0018] According to the parameters, the target cell in the first cell and the second cell is charged. When the first impedance is less than the second impedance, the target cell is the first cell. When the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0019] Fifthly, embodiments of this application propose a discharge method, comprising:

[0020] Obtain the parameters corresponding to the first and second battery cells;

[0021] According to the parameters, the target cell in the first cell and the second cell is discharged. When the first impedance is less than the second impedance, the target cell is the first cell. When the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0022] Sixthly, embodiments of this application provide a charging device, comprising:

[0023] The first acquisition module is used to acquire parameters corresponding to the first battery cell and the second battery cell;

[0024] The charging module is used to charge a target cell in the first and second battery cells according to parameters. When the first impedance is less than the second impedance, the target cell is the first battery cell. When the first impedance is greater than the second impedance, the target cell is the second battery cell. The first impedance is the impedance corresponding to the first battery cell under the parameters, and the second impedance is the impedance corresponding to the second battery cell under the parameters.

[0025] In a seventh aspect, embodiments of this application provide a discharge device, comprising:

[0026] The second acquisition module is used to acquire the parameters corresponding to the first battery cell and the second battery cell;

[0027] The discharge module is used to discharge the target cell in the first cell and the second cell according to parameters. When the first impedance is less than the second impedance, the target cell is the first cell. When the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0028] Eighthly, embodiments of this application provide an electronic device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the fourth aspect, or as described in the fifth aspect.

[0029] In a ninth aspect, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the fourth aspect, or as described in the fifth aspect.

[0030] In a tenth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the steps of the method as described in the fourth aspect, or as described in the fifth aspect.

[0031] In embodiments of this application, the battery may include a first cell and a second cell sharing a common positive electrode and separator, but with different negative electrode plates: the first cell includes a first negative electrode plate; the second cell includes a second negative electrode plate; wherein the first negative electrode plate and the second negative electrode plate have different impedances under the same parameters, the parameters including at least one of temperature and voltage. Thus, during the charging or discharging process of the battery, the cell with the lower impedance can be determined based on real-time parameters to perform the charging or discharging operation until fully charged or fully discharged. This ensures that the charging impedance remains low during charging, shortening the charging time, and that the discharging impedance remains low during discharging, improving battery life, thereby simultaneously meeting the requirements of electronic devices equipped with this battery for short charging times and long battery life.

[0032] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0033] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0034] Figure 1 This is a schematic diagram of a battery structure provided in an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of another battery structure provided in an embodiment of this application;

[0036] Figure 3 This is a graph showing the relationship between the voltage, temperature, and first impedance of the first battery cell provided in the embodiments of this application;

[0037] Figure 4 This is a graph showing the relationship between the voltage, temperature, and second impedance of the second battery cell provided in the embodiments of this application;

[0038] Figure 5 This is a schematic diagram of the charging and discharging circuit provided in an embodiment of this application;

[0039] Figure 6 This is a schematic flowchart of the charging method provided in an embodiment of this application;

[0040] Figure 7 This is a flowchart illustrating a specific scenario embodiment of the charging method provided in this application.

[0041] Figure 8 This is a schematic flowchart of the discharge method provided in the embodiments of this application;

[0042] Figure 9 This is a flowchart illustrating a specific scenario embodiment of the discharge method provided in this application.

[0043] Figure 10 This is a schematic diagram of the structure of the charging device provided in the embodiments of this application;

[0044] Figure 11 This is a schematic diagram of the structure of the discharge device provided in the embodiments of this application;

[0045] Figure 12 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application;

[0046] Figure 13 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of this application.

[0047] Figure label:

[0048] 100, Battery; 110, First Cell; 120, Second Cell;

[0049] 101. First negative electrode; 102. Second negative electrode; 103. Positive electrode; 104. Separator;

[0050] 1031, First positive electrode plate; 1032, Second positive electrode plate; 1041, First diaphragm; 1042, Second diaphragm;

[0051] 501. First battery cell module; 502. Second battery cell module; 503. Parameter acquisition module; 5031. Fuel meter module; 5032. Temperature sensing module; 504. Switch control module; 505. Charge and discharge module. Detailed Implementation

[0052] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0053] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0054] In the description of this application, it should be understood that the terms "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In related technologies, with the rapid development of intelligent electronic devices, the requirements for battery life are becoming increasingly stringent. To meet these requirements, improving battery energy density is a crucial research direction. Currently, increasing battery energy density can be achieved by changing the material of the negative electrode, for example, replacing the graphene negative electrode in traditional lithium batteries with a silicon negative electrode.

[0057] Silicon's theoretical specific capacity is several times that of graphite, allowing it to store more lithium ions, resulting in higher battery energy density and longer driving range. However, the applicant found that the energy density advantage of silicon anode batteries over graphene batteries is mainly evident at lower voltages. At higher voltages, the amount of electricity discharged by silicon anode batteries is not significantly different from that of graphene batteries at the same voltage. Furthermore, because silicon anode batteries incorporate silicon material in the anode material compared to graphene batteries, lithium ions need to move more within the silicon particles and cross the silicon and porous carbon interfaces more frequently, resulting in greater chemical resistance and lower charging efficiency compared to graphene batteries. Therefore, this application provides a battery, circuit, device, charging method, and discharging method that can simultaneously meet the needs of electronic devices for short charging times and long driving ranges.

[0058] The following is combined Figure 1 Describes the battery provided according to an embodiment of this application.

[0059] like Figure 1 As shown, this application embodiment provides a battery 100, including:

[0060] The positive electrode 103, the separator 104, the first negative electrode 101, and the second negative electrode 102 are stacked and wound together.

[0061] The first negative electrode 101, the positive electrode 103 and the separator 104 form the first battery cell 110, and the second negative electrode 102, the positive electrode 103 and the separator 104 form the second battery cell 120.

[0062] The first negative electrode 101 and the second negative electrode 102 have different impedances under the same parameters, including at least one of temperature and voltage.

[0063] In this embodiment, as Figure 1 As shown, the battery 100 may include a stacked and wound positive electrode 103, a separator 104, and a negative electrode. The negative electrode may be wound with a first negative electrode 101 and a second negative electrode 102 made of two different materials. The first negative electrode 101 and the second negative electrode 102 share the positive electrode 103 and the separator 104, forming a first battery cell 110 and a second battery cell 120, respectively.

[0064] It is understandable that the first negative electrode 101 and the second negative electrode 102 are made of different materials, and under the same temperature and / or voltage, the first negative electrode 101 and the second negative electrode 102 have different impedances.

[0065] In some embodiments, the first negative electrode 101 can be a graphene negative electrode, and the corresponding first battery cell 110 can be a graphene battery cell. The second negative electrode 102 can be a silicon negative electrode, and the corresponding second battery cell 120 can be a silicon negative electrode cell. That is, the material of the first negative electrode 101 can be graphene, and the material of the second negative electrode 102 can be silicon. Figure 3 and Figure 4 As shown, the impedance of graphene cells and silicon anode cells changes with temperature and voltage. During charging and discharging, the impedance of graphene cells and silicon anode cells at the current temperature and voltage can be compared, and cells with lower impedance can be selected for charging and discharging.

[0066] For this battery 100, the parameters collected during the charging and discharging process can be matched accordingly, so that the battery cell with lower impedance can be switched to charge and discharge at any time.

[0067] In embodiments of this application, the battery 100 may include a first cell 110 and a second cell 120 sharing a common positive electrode 103 and a separator 104, but with different negative electrode plates: the first cell 110 includes a first negative electrode 101; the second cell 120 includes a second negative electrode 102; wherein the first negative electrode 101 and the second negative electrode 102 have different impedances under the same parameters, including at least one of temperature and voltage. Thus, during the charging or discharging process of the battery 100, the cell with the lower impedance can be determined based on real-time parameters to perform the charging or discharging operation until fully charged or fully discharged. This ensures that the charging impedance remains low during charging, shortening the charging time, and that the discharging impedance remains low during discharging, improving the battery 100's range, thereby simultaneously meeting the requirements of electronic devices equipped with the battery 100 for short charging times and long battery life.

[0068] In addition, the two cells share the positive electrode 103, and the two negative electrode plates are wound together, which can greatly reduce the space required for the two cells and facilitate the miniaturization of the battery 100.

[0069] In some examples, such as Figure 2As shown, the first cell 110 and the second cell 120 can also be two independent cells. The first cell 110 may include a first negative electrode 101, a first positive electrode 1031, and a first separator 1041, all stacked and wound together. The second cell 120 may include a second negative electrode 102, a second positive electrode 1032, and a second separator 1042, all stacked and wound together. Connecting the first cell 110 and the second cell 120 in parallel yields the battery 100.

[0070] In this way, without changing the winding structure of the battery cell, the battery 100 can be assembled using two battery cells with different negative electrode materials, reducing the complexity of the battery 100's manufacturing process.

[0071] Based on the aforementioned battery 100, please refer to Figure 5 This application also provides a charging and discharging circuit, including:

[0072] First battery cell module 501 and second battery cell module 502;

[0073] The parameter acquisition module 503 is connected to the first battery cell module 501 and the second battery cell module 502. The parameter acquisition module 503 includes at least one of a fuel gauge module 5031 and a temperature sensing module 5032. The fuel gauge module 5031 is used to acquire the voltage of the first battery cell module 501 and the second battery cell module 502, and the temperature sensing module 5032 is used to acquire the temperature of the first battery cell module 501 and the second battery cell module 502.

[0074] The switch control module 504 is connected to the first battery cell module 501 and the second battery cell module 502, and is used to control the connection state of the first battery cell module 501 and the second battery cell module 502.

[0075] The charging and discharging module 505 is connected to the parameter acquisition module 503 and the switch control module 504. It is used to generate a control signal based on the parameters acquired by the parameter acquisition module 503 and send the control signal to the switch control module 504 so that the switch control module 504 controls one of the first cell module 501 and the second cell module 502 to be connected and the other to be disconnected.

[0076] In this embodiment, as Figure 5 As shown, the charging and discharging circuit may include a first cell module 501, a second cell module 502, a parameter acquisition module 503, a switch control module 504, and a charging and discharging module 505.

[0077] The parameter acquisition module 503 can be connected to the first battery cell module 501 and the second battery cell module 502. The parameter acquisition module 503 may include a fuel gauge module 5031 for real-time acquisition of the voltage of the first battery cell module 501 and the second battery cell module 502, and may also include a temperature sensing module 5032 for real-time acquisition of the temperature of the first battery cell module 501 and the second battery cell module 502. Alternatively, it may include both the fuel gauge module 5031 and the temperature sensing module 5032. In some examples, the fuel gauge module 5031 can also be used to acquire the current of the first battery cell module 501 and the second battery cell module 502.

[0078] The switch control module 504 can be connected to the first battery cell module 501 and the second battery cell module 502. For example, when charging / discharging is not required, the switch control module 504 can be disconnected from both the first battery cell module 501 and the second battery cell module 502. When the switch control module 504 is connected to the first battery cell module 501, it can be assumed that the first battery cell 110 is being charged / discharged. When the switch control module 504 is connected to the second battery cell module 502, it can be assumed that the second battery cell 120 is being charged / discharged.

[0079] The charging / discharging module 505 can be connected to the parameter acquisition module 503 and the switch control module 504, and is used to generate control signals based on the parameters acquired by the parameter acquisition module 503. For example, the charging / discharging module 505 can determine the target battery cell with lower impedance between the first battery cell 110 and the second battery cell 120 based on the parameters acquired by the parameter acquisition module 503, and generate a control signal to connect to the target battery cell. The control signal can be sent to the switch control module 504. After receiving the control signal, the switch control module 504 can control the battery cell module corresponding to the target battery cell to connect and the other battery cell module to disconnect.

[0080] It is understood that the charge / discharge module 505 may include a charging system for charging control and a discharging system for discharging control. In other words, the charging system determines which cell to charge via the switch control module 504, and the discharging system determines which cell to discharge via the switch control module 504.

[0081] In this way, during the charging or discharging process of the battery 100, the cell with the lowest impedance can be selected for charging or discharging based on real-time parameters until it is fully charged or fully discharged. This ensures that the charging impedance remains low during charging, shortening the charging time, and that the discharging impedance remains low during discharging, improving the battery 100's battery life. This simultaneously meets the needs of electronic devices that use the battery 100 for short charging times and long battery life.

[0082] This application embodiment may also provide an electronic device, including the battery described above, or the charging and discharging circuit described above.

[0083] In this embodiment, the electronic device may include the aforementioned battery or charging / discharging circuit. The electronic device may be a mobile phone, laptop, PDA, tablet computer, educational device, electronic photo album, or smartwatch, etc. The electronic device can simultaneously meet the requirements of short charging time and long battery life.

[0084] This application embodiment can also provide a charging method for the above-mentioned battery. The charging method provided by this application embodiment will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0085] Figure 6 This is a schematic flowchart of a charging method provided in an embodiment of this application. The charging method may include the following steps:

[0086] Step 601: Obtain the parameters corresponding to the first and second battery cells.

[0087] In step 601, before charging begins, the parameters corresponding to the first and second battery cells at the current moment can be obtained, and during the charging process, the parameters corresponding to the first and second battery cells can be polled. These parameters may include the voltage of the first battery cell, the voltage of the second battery cell, and the battery temperature, etc. It is understood that since the first and second battery cells are integrated together, the battery temperature can be considered as the temperature of both the first and second battery cells.

[0088] Step 602: Charge the target cell in the first and second battery cells according to the parameters;

[0089] Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0090] In step 602, a target cell between the first and second battery cells can be determined based on parameters. The target cell can be the one with the lower impedance between the first and second battery cells. For example, the first impedance of the first battery cell can be determined by matching the parameters related to the first battery cell in the parameters and a preset table of correspondence between parameters and the impedance of the first battery cell. Similarly, the second impedance of the second battery cell can be determined by matching the parameters related to the second battery cell in the parameters and a preset table of correspondence between parameters and the impedance of the second battery cell.

[0091] The first impedance is compared with the second impedance. If the first impedance is less than the second impedance, the target cell is the first cell. If the first impedance is greater than the second impedance, the target cell is the second cell.

[0092] The system charges the target battery cell and polls the parameters of the first and second battery cells. When the relationship between the first and second impedances changes, the system can switch between battery cells for charging.

[0093] In this way, during the battery charging process, the cell with the lowest impedance can be selected for charging based on real-time parameters until it is fully charged. This ensures that the charging impedance remains low throughout the charging process, shortening the charging time.

[0094] In some embodiments, the parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell;

[0095] Charging the target cell in the first and second battery cells according to the parameters may include:

[0096] When the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and charged.

[0097] When the voltage of the first battery cell is charged to the first voltage threshold, the target battery cell is switched from the first battery cell to the second battery cell and charged until the voltage of the second battery cell is charged to the second voltage threshold.

[0098] Wherein, the first temperature threshold is the temperature critical value corresponding to the first impedance being continuously less than the second impedance, the first voltage threshold is the voltage corresponding to the first cell being fully charged, and the second voltage threshold is the voltage corresponding to the second voltage being fully charged.

[0099] In this embodiment, the parameters may include temperature, the voltage of the first battery cell, and the voltage of the second battery cell. A first temperature threshold, a first voltage threshold, and a second voltage threshold may also be obtained. The first voltage threshold is the voltage corresponding to the first battery cell being fully charged, and the second voltage threshold is the voltage corresponding to the second battery cell being fully charged. The first and second voltage thresholds can be preset, can be the same value, or can be different values; the specific values ​​can be set according to actual conditions.

[0100] The first temperature threshold can be determined based on a preset table showing the correspondence between parameters and the impedance of the first battery cell, and a table showing the correspondence between parameters and the impedance of the second battery cell. The first temperature threshold is the critical temperature value corresponding to the first impedance being continuously less than the second impedance. That is, if the temperature exceeds the first temperature threshold, the first impedance will always be less than the second impedance.

[0101] To facilitate the explanation of the technical solution in this embodiment, the following description will use a graphene negative electrode as the first negative electrode and a silicon negative electrode as the second negative electrode. In other words, the first battery cell is a graphene battery cell, and the second battery cell is a silicon negative electrode cell, wherein the first voltage threshold and the second voltage threshold can be 4.5V. This can be based on... Figure 3 and Figure 4 The impedance versus parameter graph shown indicates that the first temperature threshold is 25℃.

[0102] When the temperature is greater than or equal to a first temperature threshold, the first battery cell can be identified as the target battery cell and charged until the voltage of the first battery cell is charged to a first voltage threshold. Then, the target battery cell can be switched from the first battery cell to the second battery cell and charged until the voltage of the second battery cell is charged to a second voltage threshold, at which point the charging process ends.

[0103] For example, such as Figure 7 As shown, the charging method may include:

[0104] Step 701: Obtain the current temperature of the battery. If the temperature is greater than or equal to 25°C, then proceed to step 702.

[0105] Step 702: Charge the graphene battery cell to 4.5V;

[0106] Step 703: Switch the silicon anode cell to charge to 4.5V.

[0107] In this way, based on the first temperature threshold that represents the temperature critical value corresponding to the first impedance being continuously less than the second impedance, it can be determined that when the temperature is above the first temperature threshold, the first battery cell can be identified as the target battery cell. After being fully charged, the second battery cell can be switched to charge. There is no need to compare the first impedance and the second impedance in real time. This ensures that the charging impedance is always low during the charging process, shortens the charging time, and saves computing power.

[0108] In some embodiments, charging the target cell in the first and second battery cells according to parameters may further include:

[0109] If the temperature is below the first temperature threshold, the second battery cell is identified as the target battery cell and charged.

[0110] If the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is charged to the second voltage threshold, the target cell is switched from the second cell to the first cell and charged until the voltage of the first cell is charged to the first voltage threshold.

[0111] In this embodiment, if the temperature is lower than the first temperature threshold, the second battery cell can be identified as the target battery cell and charged until the temperature is greater than or equal to the first temperature threshold. Alternatively, if the voltage of the second battery cell is charged to the second voltage threshold, the target battery cell can be switched from the second battery cell to the first battery cell and charged until the voltage of the first battery cell is charged to the first voltage threshold.

[0112] For example, such as Figure 7 As shown, the charging method may include:

[0113] Step 701: Obtain the current temperature of the battery. If the temperature is less than 25°C, proceed to step 704.

[0114] Step 704: Charge the silicon anode cell and monitor the battery temperature in real time. If the temperature is greater than or equal to 25°C, proceed to step 707. If the temperature is less than 25°C, proceed to step 705.

[0115] Step 705: Charge the silicon anode cell to 4.5V;

[0116] Step 706: Switch the graphene battery cell to charge to 4.5V;

[0117] Step 707: Switch the graphene battery cell to charge to 4.5V;

[0118] Step 708: Switch the silicon anode cell to charge to 4.5V.

[0119] In this way, the first temperature threshold, the first voltage threshold, and the second voltage threshold can be used as reference values ​​for parameters to directly determine the target cell with lower impedance. There is no need to compare the first impedance and the second impedance in real time. This ensures that the charging impedance remains low during the charging process, shortening the charging time and saving computing power.

[0120] This application embodiment can also provide a discharge method applied to the above-mentioned battery. The discharge method provided by this application embodiment will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0121] Figure 8 This is a schematic flowchart of the discharge method provided in an embodiment of this application. The discharge method may include the following steps:

[0122] Step 801: Obtain the parameters corresponding to the first and second battery cells.

[0123] In step 801, before discharge begins, the parameters corresponding to the first and second cells at the current moment can be obtained, and during the discharge process, the parameters corresponding to the first and second cells can be polled. These parameters may include the voltage of the first cell, the voltage of the second cell, and the battery temperature, etc. It is understood that since the first and second cells are integrated together, the battery temperature can be considered as the combined temperature of the first and second cells.

[0124] Step 802: Discharge the target cell in the first and second battery cells according to the parameters;

[0125] Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0126] In step 802, a target cell between the first and second battery cells can be determined based on parameters. The target cell can be the one with the lower impedance between the first and second battery cells. For example, the first impedance of the first battery cell can be determined by matching the parameters related to the first battery cell in the parameters and a preset table of correspondence between parameters and the impedance of the first battery cell. Similarly, the second impedance of the second battery cell can be determined by matching the parameters related to the second battery cell in the parameters and a preset table of correspondence between parameters and the impedance of the second battery cell.

[0127] The first impedance is compared with the second impedance. If the first impedance is less than the second impedance, the target cell is the first cell. If the first impedance is greater than the second impedance, the target cell is the second cell.

[0128] The target cell is discharged, and the parameters of the first and second cells are polled concurrently. When the relationship between the first and second impedances changes, the cell can be switched for discharge.

[0129] In this way, during the battery discharge process, the cell with the lowest impedance can be selected for discharge based on real-time parameters until the battery is fully discharged. This ensures that the discharge impedance remains low throughout the discharge process, thereby improving battery life.

[0130] In some embodiments, the parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell;

[0131] Discharging the target cell in the first and second battery cells according to the parameters may include:

[0132] When the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and discharged.

[0133] When the voltage of the first cell is discharged to the third voltage threshold, the target cell is switched from the first cell to the second cell and discharged until the voltage of the second cell is discharged to the fourth voltage threshold.

[0134] The first temperature threshold is the critical temperature value corresponding to the first impedance being continuously less than the second impedance; the third voltage threshold is the lowest voltage that the first cell can reach during the discharge process; and the fourth voltage threshold is the lowest voltage that the second cell can reach during the discharge process.

[0135] In this embodiment, the parameters may include temperature, the voltage of the first battery cell, and the voltage of the second battery cell. A first temperature threshold, a third voltage threshold, and a fourth voltage threshold can also be obtained. The third voltage threshold is the lowest voltage that the first battery cell can reach during discharge, and the fourth voltage threshold is the lowest voltage that the second battery cell can reach during discharge. The third and fourth voltage thresholds can be preset, can be the same value, or can be different values; they can be set according to actual conditions.

[0136] The first temperature threshold can be determined based on a preset table showing the correspondence between parameters and the impedance of the first battery cell, and a table showing the correspondence between parameters and the impedance of the second battery cell. The first temperature threshold is the critical temperature value corresponding to the first impedance being continuously less than the second impedance. That is, if the temperature exceeds the first temperature threshold, the first impedance will always be less than the second impedance.

[0137] To facilitate the explanation of the technical solution in this embodiment, the following description will use a graphene negative electrode as the first negative electrode and a silicon negative electrode as the second negative electrode. In other words, the first battery cell is a graphene battery cell, and the second battery cell is a silicon negative electrode cell, wherein the third and fourth voltage thresholds can be 2.7V. This can be based on... Figure 3 and Figure 4 The impedance versus parameter graph shown indicates that the first temperature threshold is 25℃.

[0138] When the temperature is greater than or equal to the first temperature threshold, the first battery cell can be identified as the target battery cell and discharged until the voltage of the first battery cell is discharged to the third voltage threshold. Then, the target battery cell can be switched from the first battery cell to the second battery cell and discharged until the voltage of the second battery cell is discharged to the fourth voltage threshold, at which point the discharge ends.

[0139] For example, such as Figure 9 As shown, the discharge method may include:

[0140] Step 901: Obtain the current temperature of the battery. If the temperature is greater than or equal to 25°C, then proceed to step 902.

[0141] Step 902: Discharge the graphene battery cell to 2.7V;

[0142] Step 903: Switch the silicon negative electrode cell to discharge to 2.7V.

[0143] In this way, based on the first temperature threshold that characterizes the temperature critical value corresponding to the first impedance being continuously less than the second impedance, it can be determined that when the temperature is above the first temperature threshold, the first cell can be identified as the target cell. After discharging, the second cell can be switched to discharge. There is no need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance is always low during the discharge process, thereby improving the battery life and saving computing power.

[0144] In some embodiments, discharging the target cell in the first and second battery cells according to parameters may further include:

[0145] If the temperature is below the first temperature threshold and the voltage of the first battery cell is above the fifth voltage threshold, the first battery cell is identified as the target battery cell and discharged.

[0146] If the voltage of the first cell is discharged to the fifth voltage threshold and the temperature is still lower than the first temperature threshold, the target cell is switched from the first cell to the second cell and discharged.

[0147] The fifth voltage threshold is defined as follows: when the temperature is lower than the first temperature threshold, the first impedance is continuously greater than the discharge voltage threshold corresponding to the second impedance, and the fifth voltage threshold is greater than the third voltage threshold.

[0148] In this embodiment, a fifth voltage threshold can also be predetermined. This fifth voltage threshold is the critical discharge voltage value of the first cell corresponding to a continuously greater first impedance than a second impedance when the temperature is lower than a first temperature threshold. The fifth voltage threshold can be greater than a third voltage threshold. Figure 3 and Figure 4 It can be seen that when the temperature is between -10℃ and 25℃, the impedance of the graphene battery cell is always less than that of the silicon anode battery cell in the range of 2.7 to 3.7V. Therefore, 3.7V can be set as the fifth voltage threshold corresponding to the graphene battery cell.

[0149] Based on this, when the temperature is lower than the first temperature threshold and the voltage of the first battery cell is greater than the fifth voltage threshold, the first battery cell is identified as the target battery cell and discharged until the voltage of the first battery cell is discharged to the fifth voltage threshold and the temperature is still lower than the first temperature threshold. Then, the target battery cell is switched from the first battery cell to the second battery cell and discharged.

[0150] For example, such as Figure 9 As shown, the discharge method may include:

[0151] Step 901: Obtain the current temperature of the battery. If the temperature is less than 25°C, proceed to step 904.

[0152] Step 904: Discharge the graphene cell and monitor the battery temperature in real time. If the temperature is still less than 25°C, proceed to step 905. If the temperature is greater than or equal to 25°C, proceed to step 911.

[0153] Step 905: Discharge the graphene battery cell to 3.7V;

[0154] Step 906: Switch the silicon anode cell to discharge and monitor the battery temperature in real time. In some examples, the silicon anode cell can be discharged directly to 2.7V before switching to the graphene cell to continue discharging to 2.7V. In other examples, the cell with lower impedance can be further determined based on the battery temperature for priority discharge until both cells have discharged to 2.7V, at which point the discharge process ends.

[0155] Step 911: Discharge the graphene battery cell to 2.7V;

[0156] Step 912: Switch the silicon negative electrode cell to discharge to 2.7V.

[0157] In this way, the first temperature threshold and the fifth voltage threshold can be used as reference values ​​for parameters to directly determine the target cell with lower impedance. There is no need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance is low during the discharge process, which improves the battery life and saves computing power.

[0158] In some embodiments, after switching the target cell from the first cell to the second cell and discharging it, the discharge method may further include:

[0159] If the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is discharged to the fourth voltage threshold, the target cell is switched from the second cell to the first cell and discharged until the voltage of the first cell is discharged to the third voltage threshold.

[0160] In this embodiment, after switching the target cell from the first cell to the second cell and discharging it, the target cell with lower impedance can be determined based on temperature.

[0161] In other words, the target cell is switched from the first cell to the second cell and discharged until the temperature is greater than or equal to the first temperature threshold, or the voltage of the second cell is discharged to the fourth voltage threshold, and then the target cell is switched from the second cell to the first cell and discharged until the voltage of the first cell is discharged to the third voltage threshold.

[0162] For example, such as Figure 9 As shown, the discharge method also includes:

[0163] Step 906: Switch the silicon negative electrode cell to discharge and monitor the battery temperature in real time. If the temperature is greater than or equal to 25°C, proceed to step 909. If the temperature is less than 25°C, proceed to step 907.

[0164] Step 907: Discharge the silicon anode cell to 2.7V;

[0165] Step 908: Switch the graphene battery cell to discharge to 2.7V;

[0166] Step 909: Switch the graphene battery cell to discharge to 2.7V;

[0167] Step 910: Switch the silicon negative electrode cell to discharge to 2.7V.

[0168] In this way, the target cell with lower impedance can be further determined based on the first temperature threshold, without the need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance remains low during the discharge process, further improving the battery life while saving computing power.

[0169] The charging method provided in this application can be executed by a charging device. This application uses the example of a charging device executing the charging method to illustrate the charging device provided in this application.

[0170] Please see Figure 10 The charging device 1000 may include:

[0171] The first acquisition module 1001 is used to acquire parameters corresponding to the first battery cell and the second battery cell;

[0172] The charging module 1002 is used to charge the target cell in the first and second battery cells according to parameters.

[0173] Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0174] In this way, during the battery charging process, the cell with the lowest impedance can be selected for charging based on real-time parameters until it is fully charged. This ensures that the charging impedance remains low throughout the charging process, shortening the charging time.

[0175] In some embodiments, the parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell;

[0176] The charging module 1002 can also be used for:

[0177] When the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and charged.

[0178] When the voltage of the first battery cell is charged to the first voltage threshold, the target battery cell is switched from the first battery cell to the second battery cell and charged until the voltage of the second battery cell is charged to the second voltage threshold.

[0179] Wherein, the first temperature threshold is the temperature critical value corresponding to the first impedance being continuously less than the second impedance, the first voltage threshold is the voltage corresponding to the first cell being fully charged, and the second voltage threshold is the voltage corresponding to the second voltage being fully charged.

[0180] In this way, based on the first temperature threshold that represents the temperature critical value corresponding to the first impedance being continuously less than the second impedance, it can be determined that when the temperature is above the first temperature threshold, the first battery cell can be identified as the target battery cell. After being fully charged, the second battery cell can be switched to charge. There is no need to compare the first impedance and the second impedance in real time. This ensures that the charging impedance is always low during the charging process, shortens the charging time, and saves computing power.

[0181] In some embodiments, the charging module 1002 can also be used for:

[0182] If the temperature is below the first temperature threshold, the second battery cell is identified as the target battery cell and charged.

[0183] If the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is charged to the second voltage threshold, the target cell is switched from the second cell to the first cell and charged until the voltage of the first cell is charged to the first voltage threshold.

[0184] In this way, the first temperature threshold, the first voltage threshold, and the second voltage threshold can be used as reference values ​​for parameters to directly determine the target cell with lower impedance. There is no need to compare the first impedance and the second impedance in real time. This ensures that the charging impedance remains low during the charging process, shortening the charging time and saving computing power.

[0185] The discharge method provided in this application can be executed by a discharge device. This application uses a discharge device executing the discharge method as an example to illustrate the discharge device provided in this application.

[0186] Please see Figure 11 The discharge device 1100 may include:

[0187] The second acquisition module 1101 is used to acquire parameters corresponding to the first battery cell and the second battery cell;

[0188] The discharge module 1102 is used to discharge the target cell in the first cell and the second cell according to the parameters.

[0189] Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0190] In this way, during the battery discharge process, the cell with the lowest impedance can be selected for discharge based on real-time parameters until the battery is fully discharged. This ensures that the discharge impedance remains low throughout the discharge process, thereby improving battery life.

[0191] In some embodiments, the parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell;

[0192] The discharge module 1102 can also be used for:

[0193] When the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and discharged.

[0194] When the voltage of the first cell is discharged to the third voltage threshold, the target cell is switched from the first cell to the second cell and discharged until the voltage of the second cell is discharged to the fourth voltage threshold.

[0195] The first temperature threshold is the critical temperature value corresponding to the first impedance being continuously less than the second impedance; the third voltage threshold is the lowest voltage that the first cell can reach during the discharge process; and the fourth voltage threshold is the lowest voltage that the second cell can reach during the discharge process.

[0196] In this way, based on the first temperature threshold that characterizes the temperature critical value corresponding to the first impedance being continuously less than the second impedance, it can be determined that when the temperature is above the first temperature threshold, the first cell can be identified as the target cell. After discharging, the second cell can be switched to discharge. There is no need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance is always low during the discharge process, thereby improving the battery life and saving computing power.

[0197] In some embodiments, the discharge module 1102 can also be used for:

[0198] If the temperature is below the first temperature threshold and the voltage of the first battery cell is above the fifth voltage threshold, the first battery cell is identified as the target battery cell and discharged.

[0199] If the voltage of the first cell is discharged to the fifth voltage threshold and the temperature is still lower than the first temperature threshold, the target cell is switched from the first cell to the second cell and discharged.

[0200] The fifth voltage threshold is defined as follows: when the temperature is lower than the first temperature threshold, the first impedance is continuously greater than the discharge voltage threshold corresponding to the second impedance, and the fifth voltage threshold is greater than the third voltage threshold.

[0201] In this way, the first temperature threshold and the fifth voltage threshold can be used as reference values ​​for parameters to directly determine the target cell with lower impedance. There is no need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance is low during the discharge process, which improves the battery life and saves computing power.

[0202] In some embodiments, the discharge module 1102 can also be used for:

[0203] After switching the target cell from the first cell to the second cell and discharging it, if the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is discharged to the fourth voltage threshold, the target cell is switched from the second cell to the first cell and discharged until the voltage of the first cell is discharged to the third voltage threshold.

[0204] In this way, the target cell with lower impedance can be further determined based on the first temperature threshold, without the need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance remains low during the discharge process, further improving the battery life while saving computing power.

[0205] The charging and discharging devices in this application embodiment can be electronic devices or components within electronic devices, such as integrated circuits or chips. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific devices.

[0206] The charging and discharging devices in this application embodiment can be devices with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0207] The charging and discharging devices provided in this application embodiment can implement the various processes implemented in the method embodiment, and will not be described again here to avoid repetition.

[0208] Optionally, such as Figure 12 As shown, this application embodiment also provides an electronic device 1200, including a processor 1201 and a memory 1202. The memory 1202 stores a program or instructions that can run on the processor 1201. When the program or instructions are executed by the processor 1201, they implement the various steps of the above-described control method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0209] It should be noted that the electronic devices in the embodiments of this application include the aforementioned mobile electronic devices and non-mobile electronic devices.

[0210] Figure 13 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application.

[0211] The electronic device 1300 includes, but is not limited to, components such as: radio frequency unit 1301, network module 1302, audio output unit 1303, input unit 1304, sensor 1305, display unit 1306, user input unit 1307, interface unit 1308, memory 1309, and processor 1310.

[0212] Those skilled in the art will understand that the electronic device 1300 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1310 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 13 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0213] The processor 1310 can be used for:

[0214] Obtain the parameters corresponding to the first and second battery cells;

[0215] According to the parameters, the target cell in the first and second battery cells is charged;

[0216] Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0217] In this way, during the battery charging process, the cell with the lowest impedance can be selected for charging based on real-time parameters until it is fully charged. This ensures that the charging impedance remains low throughout the charging process, shortening the charging time.

[0218] In some embodiments, the parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell; the processor 1310 can also be used for:

[0219] When the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and charged.

[0220] When the voltage of the first battery cell is charged to the first voltage threshold, the target battery cell is switched from the first battery cell to the second battery cell and charged until the voltage of the second battery cell is charged to the second voltage threshold.

[0221] Wherein, the first temperature threshold is the temperature critical value corresponding to the first impedance being continuously less than the second impedance, the first voltage threshold is the voltage corresponding to the first cell being fully charged, and the second voltage threshold is the voltage corresponding to the second voltage being fully charged.

[0222] In this way, based on the first temperature threshold that represents the temperature critical value corresponding to the first impedance being continuously less than the second impedance, it can be determined that when the temperature is above the first temperature threshold, the first battery cell can be identified as the target battery cell. After being fully charged, the second battery cell can be switched to charge. There is no need to compare the first impedance and the second impedance in real time. This ensures that the charging impedance is always low during the charging process, shortens the charging time, and saves computing power.

[0223] In some embodiments, the processor 1310 may also be used for:

[0224] If the temperature is below the first temperature threshold, the second battery cell is identified as the target battery cell and charged.

[0225] If the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is charged to the second voltage threshold, the target cell is switched from the second cell to the first cell and charged until the voltage of the first cell is the first voltage threshold.

[0226] In this way, the first temperature threshold, the first voltage threshold, and the second voltage threshold can be used as reference values ​​for parameters to directly determine the target cell with lower impedance. There is no need to compare the first impedance and the second impedance in real time. This ensures that the charging impedance remains low during the charging process, shortening the charging time and saving computing power.

[0227] The processor 1310 can also be used for:

[0228] Obtain the parameters corresponding to the first and second battery cells;

[0229] Based on the parameters, the target cell in the first and second battery cells is discharged;

[0230] Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

[0231] In this way, during the battery discharge process, the cell with the lowest impedance can be selected for discharge based on real-time parameters until the battery is fully discharged. This ensures that the discharge impedance remains low throughout the discharge process, thereby improving battery life.

[0232] In some embodiments, the parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell; the processor 1310 can also be used for:

[0233] When the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and discharged.

[0234] When the voltage of the first cell is discharged to the third voltage threshold, the target cell is switched from the first cell to the second cell and discharged until the voltage of the second cell is discharged to the fourth voltage threshold.

[0235] The first temperature threshold is the critical temperature value corresponding to the first impedance being continuously less than the second impedance; the third voltage threshold is the lowest voltage that the first cell can reach during the discharge process; and the fourth voltage threshold is the lowest voltage that the second cell can reach during the discharge process.

[0236] In this way, based on the first temperature threshold that characterizes the temperature critical value corresponding to the first impedance being continuously less than the second impedance, it can be determined that when the temperature is above the first temperature threshold, the first cell can be identified as the target cell. After discharging, the second cell can be switched to discharge. There is no need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance is always low during the discharge process, thereby improving the battery life and saving computing power.

[0237] In some embodiments, the processor 1310 may also be used for:

[0238] If the temperature is below the first temperature threshold and the voltage of the first battery cell is above the fifth voltage threshold, the first battery cell is identified as the target battery cell and discharged.

[0239] If the voltage of the first cell is discharged to the fifth voltage threshold and the temperature is still lower than the first temperature threshold, the target cell is switched from the first cell to the second cell and discharged.

[0240] The fifth voltage threshold is defined as follows: when the temperature is lower than the first temperature threshold, the first impedance is continuously greater than the discharge voltage threshold corresponding to the second impedance, and the fifth voltage threshold is greater than the third voltage threshold.

[0241] In this way, the first temperature threshold and the fifth voltage threshold can be used as reference values ​​for parameters to directly determine the target cell with lower impedance. There is no need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance is low during the discharge process, which improves the battery life and saves computing power.

[0242] In some embodiments, the processor 1310 may also be used for:

[0243] After switching the target cell from the first cell to the second cell and discharging it, if the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is discharged to the fourth voltage threshold, the target cell is switched from the second cell to the first cell and discharged until the voltage of the first cell is discharged to the third voltage threshold.

[0244] In this way, the target cell with lower impedance can be further determined based on the first temperature threshold, without the need to compare the first impedance and the second impedance in real time. This ensures that the discharge impedance remains low during the discharge process, further improving the battery life while saving computing power.

[0245] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described control method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0246] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0247] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0248] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0249] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the control method embodiments described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0250] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0251] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0252] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0253] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, comprising a charging and discharging circuit, characterized in that, The battery includes: A positive electrode sheet, a separator, a first negative electrode sheet, and a second negative electrode sheet are stacked and wound together, wherein the first negative electrode sheet and the second negative electrode sheet are stacked together. The first negative electrode, the positive electrode, and the separator form a first battery cell, and the second negative electrode, the positive electrode, and the separator form a second battery cell; the first negative electrode is a graphene negative electrode, the second negative electrode is a silicon negative electrode, and the first and second battery cells share the positive electrode and the separator; wherein the first and second negative electrode have different impedances under the same parameters, the parameters including at least one of temperature and voltage; The charging and discharging circuit includes: a parameter acquisition module connected to the first battery cell and the second battery cell, wherein the parameter acquisition module is used to poll the parameters corresponding to the first battery cell and the second battery cell during charging or discharging. A switch control module, connected to the first battery cell and the second battery cell, is used to control the connection state of the first battery cell and the second battery cell; A charging and discharging module, connected to the parameter acquisition module and the switch control module, is used to generate a control signal based on the parameters and send the control signal to the switch control module so that the switch control module controls one of the first battery cell and the second battery cell to be connected and the other to be disconnected. Wherein, when the first impedance is less than the second impedance, the control signal indicates that the first cell is connected and the second cell is disconnected; when the first impedance is greater than the second impedance, the control signal indicates that the second cell is connected and the first cell is disconnected; the first impedance is the impedance corresponding to the first cell under the parameters, and the second impedance is the impedance corresponding to the second cell under the parameters.

2. An electronic device, characterized in that, Includes the battery as described in claim 1.

3. A charging method applied to the battery as described in claim 1, characterized in that, The method includes: During the charging process, poll the parameters corresponding to the first and second battery cells; According to the parameters, the target cell in the first battery cell and the second battery cell is charged; Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the given parameters, and the second impedance is the impedance corresponding to the second cell under the given parameters.

4. The method according to claim 3, characterized in that, The parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell; The step of charging the target cell in the first battery cell and the second battery cell according to the parameters includes: If the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and charged. When the voltage of the first battery cell is charged to a first voltage threshold, the target battery cell is switched from the first battery cell to the second battery cell and charged until the voltage of the second battery cell is charged to a second voltage threshold. Wherein, the first temperature threshold is the temperature critical value corresponding to the first impedance being continuously less than the second impedance, the first voltage threshold is the voltage corresponding to the first cell being fully charged, and the second voltage threshold is the voltage corresponding to the second voltage being fully charged.

5. The method according to claim 4, characterized in that, The step of charging the target cell in the first cell and the second cell according to the parameters further includes: If the temperature is lower than the first temperature threshold, the second battery cell is identified as the target battery cell and charged. If the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is charged to the second voltage threshold, the target cell is switched from the second cell to the first cell and charged until the voltage of the first cell is charged to the first voltage threshold.

6. A discharge method applied to the battery as described in claim 1, characterized in that, The method includes: During the discharge process, the parameters corresponding to the first and second battery cells are polled. According to the parameters, the target cell in the first cell and the second cell is discharged; Wherein, when the first impedance is less than the second impedance, the target cell is the first cell; when the first impedance is greater than the second impedance, the target cell is the second cell. The first impedance is the impedance corresponding to the first cell under the given parameters, and the second impedance is the impedance corresponding to the second cell under the given parameters.

7. The method according to claim 6, characterized in that, The parameters include temperature, voltage of the first battery cell, and voltage of the second battery cell; The step of discharging the target cell in the first cell and the second cell according to the parameters includes: When the temperature is greater than or equal to the first temperature threshold, the first battery cell is identified as the target battery cell and discharged. When the voltage of the first cell is discharged to the third voltage threshold, the target cell is switched from the first cell to the second cell and discharged until the voltage of the second cell is discharged to the fourth voltage threshold. Wherein, the first temperature threshold is the critical temperature value corresponding to the first impedance being continuously less than the second impedance, the third voltage threshold is the lowest voltage that the first cell can reach during the discharge process, and the fourth voltage threshold is the lowest voltage that the second cell can reach during the discharge process.

8. The method according to claim 7, characterized in that, The step of discharging the target cell in the first cell and the second cell according to the parameters further includes: If the temperature is lower than the first temperature threshold and the voltage of the first battery cell is greater than the fifth voltage threshold, the first battery cell is identified as the target battery cell and discharged. If the voltage of the first battery cell is discharged to the fifth voltage threshold and the temperature is still lower than the first temperature threshold, the target battery cell is switched from the first battery cell to the second battery cell and discharged. Wherein, the fifth voltage threshold is defined as follows: when the temperature is lower than the first temperature threshold, the first impedance is continuously greater than the discharge voltage threshold corresponding to the second impedance, and the fifth voltage threshold is greater than the third voltage threshold.

9. The method according to claim 8, characterized in that, After switching the target battery cell from the first battery cell to the second battery cell and discharging it, the method further includes: If the temperature is greater than or equal to the first temperature threshold, or if the voltage of the second cell is discharged to the fourth voltage threshold, the target cell is switched from the second cell to the first cell and discharged until the voltage of the first cell is discharged to the third voltage threshold.

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