Battery, electronic equipment, battery health state determination method and related device

Abstract

The invention discloses a battery, electronic equipment, a battery health state determination method and a related device, and belongs to the technical field of battery management. Wherein the battery comprises a first battery cell, and a first pole of the first battery cell is electrically connected with a first end of the variable resistor and a power interface of the battery; a second pole of the second battery cell is electrically connected with the power interface of the battery; the switch assembly is electrically connected with the second end of the variable resistance piece, the second pole of the first battery cell, the first pole of the second battery cell and the second pole of the second battery cell; the controller is electrically connected with the first battery cell, the second battery cell, the variable resistance piece and the switch assembly; the controller is used for controlling the switch assembly, so that the electric quantity of the first battery cell is different from that of the second battery cell; and the control module is also used for controlling the variable resistance piece to adjust the resistance parameter of the variable resistance piece, and controlling the switch assembly to conduct an access between the first pole of the first battery cell and the first pole of the second battery cell and an access between the second pole of the first battery cell and the second pole of the second battery cell.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of battery management, and particularly relates to a battery, an electronic device, a battery health state determination method and related devices. BACKGROUND

[0002] At present, a double battery core is arranged in an electronic device, so that the double battery core can supply power for the electronic device in the process of using the electronic device, to provide longer endurance time and higher power.

[0003] However, in the related art, the health states of the two battery cores cannot be detected, and thus potential problems of the battery cannot be identified in time, thereby affecting the performance of the electronic device. SUMMARY

[0004] Embodiments of the present application provide a battery, an electronic device, a battery health state determination method and related devices, which can detect the health state of a battery core, identify potential problems of the battery in time, and avoid affecting the performance of the electronic device.

[0005] In a first aspect, embodiments of the present application provide a battery, which includes: a first battery core, a first pole of the first battery core being electrically connected with a first end of a variable resistor and a power interface of the battery; a second battery core, a second pole of the second battery core being electrically connected with the power interface of the battery; a switch assembly, the switch assembly being electrically connected with a second end of the variable resistor, a second pole of the first battery core, a first pole of the second battery core and a second pole of the second battery core; a controller, the controller being electrically connected with the first battery core, the second battery core, the variable resistor and the switch assembly; wherein the controller is configured to control the switch assembly to turn on a path between the second pole of the first battery core and the power interface, or a path between the first pole of the first battery core and the first pole of the second battery core, so that the electric quantity of the first battery core and the electric quantity of the second battery core are different; and the controller is further configured to control the variable resistor to adjust a resistance parameter of the variable resistor, and control the switch assembly to turn on the path between the first pole of the first battery core and the first pole of the second battery core, and the path between the second pole of the first battery core and the second pole of the second battery core.

[0006] In a second aspect, embodiments of the present application provide an electronic device, which includes the battery of the first aspect.

[0007] In a third aspect, the embodiments of the present application provide a method for determining battery health status, applied to the electronic device of the second aspect, and the method comprises: determining health status information of a target battery cell of a battery of the electronic device according to an electrical signal of the target battery cell, the target battery cell being a first battery cell or a second battery cell of the battery; wherein, in a case where the health status information of the target battery cell is determined, a controller of the battery controls a switch assembly of the battery to conduct a path between a second pole of the first battery cell and a power interface of the battery, or a path between a first pole of the first battery cell and a first pole of the second battery cell, so as to make the electric quantity of the first battery cell and the electric quantity of the second battery cell different; the controller of the battery further controls a variable resistance component of the battery to adjust a resistance parameter of the variable resistance component, and controls the switch assembly to conduct the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell.

[0008] In a fourth aspect, the embodiments of the present application provide a device for determining battery health status, applied to the electronic device of the second aspect, and the device comprises: a determination module configured to determine health status information of a target battery cell of a battery of the electronic device according to an electrical signal of the target battery cell, the target battery cell being a first battery cell or a second battery cell of the battery; wherein, in a case where the health status information of the target battery cell is determined, a controller of the battery controls a switch assembly of the battery to conduct a path between a second pole of the first battery cell and a power interface of the battery, or controls the switch assembly to conduct a path between a first pole of the first battery cell and a first pole of the second battery cell, so as to make the electric quantity of the first battery cell and the electric quantity of the second battery cell different; and controls a variable resistance component of the battery to adjust a resistance parameter of the variable resistance component, and controls the switch assembly to conduct the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell.

[0009] In a fifth aspect, the embodiments of the present application provide an electronic device, comprising a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the method of the first aspect.

[0010] In a sixth aspect, the embodiments of the present application provide a readable storage medium, the readable storage medium storing programs or instructions, and the programs or instructions are executed by the processor to implement the steps of the method of the first aspect.

[0011] In a seventh aspect, the embodiments of the present application provide a chip, comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to run programs or instructions to implement the steps of the method of the first aspect.

[0012] In an eighth aspect, an embodiment of the present application provides a computer program product stored in a storage medium, which is executed by at least one processor to implement the steps of the method of the first aspect.

[0013] In the embodiment of the present application, since the switch assembly and the controller are arranged in the battery, in the case that the varying current is input to the battery cell, the health state of the battery cell is related to the electrical signal of the battery cell, so that the controller can control the switch assembly to conduct the path between the second pole of the first battery cell and the power interface, or the path between the first pole of the first battery cell and the first pole of the second battery cell, so that the electric quantity of the first battery cell and the electric quantity of the second battery cell are different, and conduct the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell, so that the first battery cell and the second battery cell are connected in parallel. In this way, because the electric quantity of the first battery cell and the electric quantity of the second battery cell are different, the battery cell with higher electric quantity can input the current to the battery cell with lower electric quantity, and the controller can control the variable resistor to adjust the resistance parameter of the variable resistor, so that the battery cell with higher electric quantity can input the varying current to the battery cell with lower electric quantity, so that the health state of the battery cell with lower electric quantity is related to the electrical signal of the battery cell with lower electric quantity. Therefore, the controller can accurately detect the health state of the battery cell according to the electrical signal of the battery cell with lower electric quantity, identify the potential problem of the battery in time, and avoid affecting the performance of the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is one of the circuit structure schematic diagrams of the battery provided by the embodiment of the present application;

[0015] Figure 2 FIG. 2 is another of the circuit structure schematic diagrams of the battery provided by the embodiment of the present application;

[0016] Figure 3 FIG. 3 is a third of the circuit structure schematic diagrams of the battery provided by the embodiment of the present application;

[0017] Figure 4 FIG. 4 is a fourth of the circuit structure schematic diagrams of the battery provided by the embodiment of the present application;

[0018] Figure 5 FIG. 5 is a structure schematic diagram of the electronic device provided by the embodiment of the present application;

[0019] Figure 6 FIG. 6 is one of the flow schematic diagrams of the method for determining the health state of the battery provided by the embodiment of the present application;

[0020] Figure 7 FIG. 7 is another of the flow schematic diagrams of the method for determining the health state of the battery provided by the embodiment of the present application;

[0021] Figure 8 is a change diagram of an electrical signal of a target battery cell in a method for determining a battery state of health provided by embodiments of the present application;

[0022] Figure 9 is a diagram of an impedance spectrum of a target battery cell in a method for determining a battery state of health provided by embodiments of the present application;

[0023] Figure 10 is a structural diagram of a device for determining a battery state of health provided by embodiments of the present application;

[0024] Figure 11 is one of hardware structural diagrams of an electronic device provided by embodiments of the present application;

[0025] Figure 12 is another of hardware structural diagrams of an electronic device provided by embodiments of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0027] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a category, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0028] The terms "at least one", "at least one of", and the like in the specification and claims of the present application refer to any one of the objects, a combination of any two or more of the objects. For example, at least one of a, b, and c can mean "a", "b", "c", "a and b", "a and c", "b and c", and "a, b, and c", wherein a, b, and c can be single or multiple. Similarly, "at least two" refers to two or more, and has a similar meaning to "at least one".

[0029] The battery, the electronic device, the battery health state determination method, and the related apparatus provided by the embodiments of the present application will be described in detail below with reference to the embodiments and application scenarios thereof, in combination with the drawings.

[0030] Currently, a double cell is arranged in an electronic device, so that the double cell can supply power to the electronic device during use of the electronic device, to provide a longer endurance time and higher power. However, in the related art, the health states of the two cells cannot be detected. For example, in the related art, electrochemical impedance spectroscopy (EIS) technology can accurately analyze changes in materials inside a battery and obtain a battery health state and a battery safety performance reference index. Traditional EIS detection methods are mostly used in laboratory environments and are difficult to be directly applied to actual devices. In this way, the electronic device cannot determine the aging degrees of the two cells in a timely manner according to the health states of the two cells, and thus potential problems of the battery cannot be identified in a timely manner, thereby affecting the performance of the electronic device.

[0031] To solve the above technical problem, the embodiments of the present application provide a battery. Figure 1 A structural schematic diagram of the battery provided by the embodiments of the present application is shown. As shown in Figure 1 The battery provided by the embodiments of the present application can include: a first cell 10, a first pole 101 of the first cell 10 being electrically connected with a first end of a variable resistance element 11 and a power interface 12 of the battery; a second cell 13, a second pole of the second cell 13 being electrically connected with the power interface 12 of the battery; a switch assembly 14, the switch assembly 14 being electrically connected with a second end of the variable resistance element 11, a second pole 102 of the first cell 10, a first pole 131 of the second cell 13, and a second pole 132 of the second cell 13; and a controller 15, the controller 15 being electrically connected with the first cell 10, the second cell 13, the variable resistance element 11, and the switch assembly 14.

[0032] In some embodiments of the present application, the first pole 101 of the first cell 10 can be an anode or a cathode, and the second pole 102 of the first cell 10 can be a cathode or an anode.

[0033] In some embodiments of the present application, the variable resistance element 11 can include but is not limited to a variable resistor, which can include but is not limited to a slide variable resistor, a digital potentiometer, a chopping variable resistor, a micro-electromechanical rotary variable resistor, and the like.

[0034] It can be understood that the variable resistance element 11 can adjust its resistance parameter under the control of a control device (for example, the controller 15 described above). The resistance parameter can include but is not limited to a resistance value.

[0035] In some embodiments of the present application, the first end of the variable resistor 11 can be a power input end, and the second end of the variable resistor 11 can be a power output end.

[0036] In some embodiments of the present application, the power interface 12 can be electrically connected with a power supply, and the charging current of the power interface 12 can have a predetermined current value, which can be 100 milliampere mA, and can also be other values, which are not limited in the embodiments of the present application.

[0037] In some embodiments of the present application, the first pole 131 of the second battery cell 13 can be an anode or a cathode, and the second pole 132 of the second battery cell 13 can be a cathode or an anode.

[0038] In some embodiments of the present application, the switch assembly 14 can include at least one switch, which can include but is not limited to a single-pole single-throw switch, a single-pole double-throw switch, a double-pole double-throw switch, and the like.

[0039] In some embodiments of the present application, the controller 15 can include but is not limited to any one of a central processing unit (CPU), a micro control unit (MCU), and the like.

[0040] In the embodiments of the present application, the controller 15 is configured to control the switch assembly 14 to turn on a path between the second pole 102 of the first battery cell 10 and the power interface 12, or a path between the first pole 101 of the first battery cell and the first pole 131 of the second battery cell 13, so that the electric quantity of the first battery cell 10 and the electric quantity of the second battery cell 13 are different.

[0041] In some embodiments of the present application, the electric quantity of the second battery cell 13 being different from the electric quantity of the first battery cell 10 can mean that the electric quantity of the second battery cell 13 is greater than the electric quantity of the first battery cell 10, or the electric quantity of the second battery cell 13 is less than the electric quantity of the first battery cell 10.

[0042] It can be understood that if the electric quantity of the second battery cell 13 is different from the electric quantity of the first battery cell 10, one of the first battery cell 10 and the second battery cell 13 can output an electric signal to the other when the second battery cell 13 and the first battery cell 10 are connected in parallel. The electric signal can include but is not limited to a voltage signal, a current signal, and the like.

[0043] For example, if the electric quantity of the second electric core 13 is greater than that of the first electric core 10, the second electric core 13 can output an electric signal to the first electric core 10 in the case of connecting the second electric core 13 and the first electric core 10 in parallel; if the electric quantity of the second electric core 13 is less than that of the first electric core 10, the first electric core 10 can output an electric signal to the second electric core 13 in the case of connecting the second electric core 13 and the first electric core 10 in parallel.

[0044] In the embodiment of the present application, the controller 15 is further configured to control the variable resistor 11 to adjust the resistance parameter of the variable resistor 11, and control the switch assembly 14 to turn on the paths between the first pole 101 of the first electric core 10 and the first pole 131 of the second electric core 13, and between the second pole 102 of the first electric core 10 and the second pole 132 of the second electric core 13.

[0045] It can be understood that in the case of turning on the paths between the first pole 101 of the first electric core 10 and the first pole 131 of the second electric core 13, and between the second pole 102 of the first electric core 10 and the second pole 132 of the second electric core 13, the second electric core 13 is connected in parallel with the first electric core 10, and at this time, the electric core with greater electric quantity in the first electric core 10 and the second electric core 13 can output an electric signal to the electric core with smaller electric quantity, and at this time, the health state of the electric core with smaller electric quantity can be detected by detecting the electric signal of the electric core with smaller electric quantity.

[0046] In the embodiment of the present application, the controller 15 is further configured to determine the health state information of the electric core with smaller electric quantity according to the electric signal of the electric core with smaller electric quantity, and determine the health state of the electric core with smaller electric quantity according to the health state information. The health state information can include, but is not limited to, at least one of the following: State of Charge (SOC), State of Health (SOH), etc.

[0047] In a possible implementation, the controller 15 can first control the switch assembly 14 to turn on the path between the second pole 102 of the first battery cell 10 and the power interface 12, so that the power interface 12 charges the first battery cell 10, so that the electric quantity of the first battery cell 10 is greater than that of the second battery cell 13. Then the controller 15 can control the variable resistor 11 to adjust the resistance parameter of the variable resistor 11, and control the switch assembly 14 to turn on the paths between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, and between the second pole 102 of the first battery cell 10 and the second pole 132 of the second battery cell 13, at this time the first battery cell 10 can output a variable electric signal to the second battery cell 13, so that the electric signal of the second battery cell 13 can be detected, and the health state of the second battery cell 13 can be detected according to the electric signal of the second battery cell 13. Next, the controller 15 can control the switch assembly 14 to turn on the path between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, so that the power interface 12 charges the second battery cell 13, so that the electric quantity of the second battery cell 13 is greater than that of the first battery cell 10. Then the controller 15 can control the variable resistor 11 to adjust the resistance parameter of the variable resistor 11, and control the switch assembly 14 to turn on the paths between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, and between the second pole 102 of the first battery cell 10 and the second pole 132 of the second battery cell 13, at this time the second battery cell 13 can output a variable electric signal to the first battery cell 10, so that the electric signal of the first battery cell 10 can be detected, and the health state of the first battery cell 10 can be detected according to the electric signal of the first battery cell 10. Further, the health states of the first battery cell 10 and the second battery cell 13 of the battery can be determined.

[0048] In another possible implementation, the controller 15 can first control the switch assembly 14 to turn on the path between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, so that the power interface 12 charges the second battery cell 13, and the electric quantity of the second battery cell 13 is greater than that of the first battery cell 10. Then the controller 15 can control the variable resistor 11 to adjust the resistance parameter of the variable resistor 11, and control the switch assembly 14 to turn on the path between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, and the path between the second pole 102 of the first battery cell 10 and the second pole 132 of the second battery cell 13, at this time the second battery cell 13 can output a variable electric signal to the first battery cell 10, so that the electric signal of the first battery cell 10 can be detected, and the health state of the first battery cell 10 can be detected according to the electric signal of the first battery cell 10. Next, the controller 15 can control the switch assembly 14 to turn on the path between the second pole 102 of the first battery cell 10 and the power interface 12, so that the power interface 12 charges the first battery cell 10, and the electric quantity of the first battery cell 10 is greater than that of the second battery cell 13. Then the controller 15 can control the variable resistor 11 to adjust the resistance parameter of the variable resistor 11, and control the switch assembly 14 to turn on the path between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, and the path between the second pole 102 of the first battery cell 10 and the second pole 132 of the second battery cell 13, at this time the first battery cell 10 can output a variable electric signal to the second battery cell 13, so that the electric signal of the second battery cell 13 can be detected, and the health state of the second battery cell 13 can be detected according to the electric signal of the second battery cell 13. Further, the health states of the first battery cell 10 and the second battery cell 13 of the battery can be determined.

[0049] Wherein the electric signal of the first battery cell 10 or the second battery cell 13 can be detected by the controller 15 to detect the health state of the first battery cell 10 or the second battery cell 13, at this time the controller 15 can also be electrically connected with the first battery cell 10 and the second battery cell 13. Of course, the electric signal of the first battery cell 10 or the second battery cell 13 can also be detected by other elements to detect the health state of the first battery cell 10 or the second battery cell 13, which is not limited in the application.

[0050] The embodiment of the present application provides a battery, which can include a first battery cell, a second battery cell, a switch assembly and a controller, a first pole of the first battery cell is electrically connected with a first end of a variable resistor and a power interface of the battery respectively, a second pole of the second battery cell is electrically connected with the power interface of the battery, the switch assembly is electrically connected with a second end of the variable resistor, a second pole of the first battery cell, a first pole of the second battery cell and a second pole of the second battery cell, and the controller is electrically connected with the first battery cell, the second battery cell, the variable resistor and the switch assembly; wherein the controller is used for controlling the switch assembly to turn on a path between the second pole of the first battery cell and the power interface, or a path between the first pole of the first battery cell and the first pole of the second battery cell, so that the electric quantity of the first battery cell and the electric quantity of the second battery cell are different; the controller is also used for controlling the variable resistor to adjust the resistance parameter of the variable resistor, and controlling the switch assembly to turn on the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell. Since the switch assembly and the controller are arranged in the battery, in the case that the battery cell is supplied with a variable current, the health state of the battery cell is related to the electric signal of the battery cell, so the controller can control the switch assembly to turn on the path between the second pole of the first battery cell and the power interface, or the path between the first pole of the first battery cell and the first pole of the second battery cell, so that the electric quantity of the first battery cell and the electric quantity of the second battery cell are different, and turn on the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell, so that the first battery cell and the second battery cell are connected in parallel, so that the battery cell with higher electric quantity in the first battery cell and the second battery cell can supply the battery cell with lower electric quantity with a current, and the controller can control the variable resistor to adjust the resistance parameter of the variable resistor, so that the battery cell with higher electric quantity in the first battery cell and the second battery cell can supply the battery cell with lower electric quantity with a variable current, so that the health state of the battery cell with lower electric quantity is related to the electric signal of the battery cell with lower electric quantity, therefore, the controller can accurately detect the health state of the battery cell according to the electric signal of the battery cell with lower electric quantity, and identify potential problems of the battery in time, so as to avoid affecting the performance of the electronic device.

[0051] In some embodiments of the present application, in combination with Figure 1 As Figure 2As shown, the switch assembly 14 includes a first switch piece 141, a second switch piece 142, and a controller 15. The first end of the first switch piece 141 is electrically connected to the second end of the variable resistance piece 11, the second end of the first switch piece 141 is electrically connected to the first pole 131 of the second battery cell 13, and the third end of the first switch piece 141 is electrically connected to the controller 15. The first end of the second switch piece 142 is electrically connected to the second pole 102 of the first battery cell 10, the second end of the second switch piece 142 is electrically connected to the second pole 132 of the second battery cell 13, and the third end of the second switch piece 142 is electrically connected to the controller 15.

[0052] In some examples, the first switch piece 141 can include, but is not limited to, a single-pole single-throw switch, a single-pole double-throw switch, a double-pole double-throw switch, and the like.

[0053] In some examples, the first end of the first switch piece 141 can be a power input end, and the second end of the first switch piece 141 can be a power output end.

[0054] In some examples, the second switch piece 142 can include, but is not limited to, a single-pole single-throw switch, a single-pole double-throw switch, a double-pole double-throw switch, and the like.

[0055] In some examples, the first end of the second switch piece 142 can be a power input end, and the second end of the second switch piece 142 can be a power output end.

[0056] In the embodiment of the present application, the controller 15 is specifically configured to turn on the first switch piece 141 and the second switch piece 142 to turn on the paths between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, and the paths between the second pole 102 of the first battery cell 10 and the second pole 132 of the second battery cell 13.

[0057] As can be seen, since only two switch pieces, i.e., the first switch piece and the second switch piece, are arranged in the switch assembly, the parallel connection of the first battery cell and the second battery cell can be realized by turning on the two switch pieces, without the need to arrange other complex components, so that the cost of the battery can be reduced, and the complexity of the battery can be reduced.

[0058] In some examples, in combination with Figure 2 The controller 15 is specifically configured to turn on the second switch piece 142 and turn off the first switch piece 141 to charge the first battery cell 10 through the power interface 12, so that the electric quantity of the first battery cell 10 is greater than that of the second battery cell 13, or to turn on the first switch piece 141 and turn off the second switch piece 142 to charge the second battery cell 13 through the power interface 12, so that the electric quantity of the second battery cell 13 is greater than that of the first battery cell 10.

[0059] Optionally, in the case of charging the first battery cell 10 through the power interface 12, in the case that the value of the voltage of the first battery cell 10 being higher than the voltage of the second battery cell 13 is greater than or equal to a first voltage threshold, the charging of the first battery cell 10 through the power interface 12 can be stopped. The first voltage threshold can be 0.1 volt, and the first voltage threshold can also be other values, which are not limited in the embodiments of the present application.

[0060] Optionally, in the case of charging the second battery cell 13 through the power interface 12, in the case that the value of the voltage of the second battery cell 13 being higher than the voltage of the first battery cell 10 is greater than or equal to a second voltage threshold, the charging of the second battery cell 13 through the power interface 12 can be stopped. The second voltage threshold can be 0.1 volt, and the second voltage threshold can also be other values, which are not limited in the embodiments of the present application.

[0061] The second voltage threshold and the first voltage threshold can be the same or different.

[0062] As can be seen, since the controller can charge the first battery cell or the second battery cell by disconnecting or conducting the first switch and conducting or disconnecting the second switch, it can be ensured that the power of the first battery cell and the power of the second battery cell are different, so that the controller can accurately detect the state of health of the first battery cell or the second battery cell, identify potential problems of the battery in time, and avoid affecting the performance of the electronic device. Moreover, since only the first switch and the second switch need to be set, the first battery cell or the second battery cell can be charged and the first battery cell and the second battery cell can be connected in parallel at the same time without setting other complex components, so that the cost of the battery can be reduced and the complexity of the battery can be reduced.

[0063] In some embodiments of the present application, in combination with Figure 1 As shown in the first aspect, Figure 3 The battery provided by the embodiments of the present application can further include a third switch 16, a first end of the third switch 16 being electrically connected with the second pole 102 of the first battery cell 10, a second end of the third switch 16 being electrically connected with the first pole 131 of the second battery cell 13, and a third end of the third switch 16 being electrically connected with the controller 15.

[0064] In some examples, the third switch 16 described above can include but is not limited to a single-pole single-throw switch, a single-pole double-throw switch, a double-pole double-throw switch, etc.

[0065] In some examples, the first end of the third switch 16 described above can be a power input end, and the second end of the third switch 16 described above can be a power output end.

[0066] In this embodiment of the application, the controller 15 is also used to disconnect the third switch 16 during the process of controlling the variable resistor 11 to adjust the resistance parameters.

[0067] It is understood that the controller 15 can adjust the resistance parameter of the variable resistor 11 by controlling the variable resistor 11, and control the switch assembly 14 to open the path between the first pole 101 of the first cell 10 and the first pole 131 of the second cell 13, as well as the path between the second pole 102 of the first cell 10 and the second pole 132 of the second cell 13, and then disconnect the third switch assembly 16. This can prevent the second pole 102 of the first cell 10 and the first pole 131 of the second cell 13 from being directly electrically connected, thereby avoiding interference with the electrical signal of the cell with lower charge in the first and second cells. In this way, the health status of the cells can be accurately detected.

[0068] In some examples, controller 15 is also used to turn on third switch 16 in addition to controlling variable resistor 11 to adjust resistance parameters.

[0069] Thus, since a third switching device is also installed in the battery, on the one hand, during the process of adjusting the resistance parameters of the variable resistor, the controller can disconnect the third switching device to break the electrical connection between the second terminal of the first cell and the first terminal of the second cell. Therefore, it can avoid interference with the electrical signal of the cell with lower charge in the first and second cells caused by the electrical connection between the second and first terminals of the first and second cells, thereby enabling accurate detection of the cell's health status. On the other hand, the controller can turn on the third switching device during processes other than adjusting the resistance parameters of the variable resistor, thus enabling a direct electrical connection between the second and first terminals of the first and second cells. Therefore, it can achieve the effect of power supply through dual cells, thereby improving the battery's range and output power.

[0070] In some embodiments of this application, combined with Figure 1 ,like Figure 4 As shown, the battery provided in this application embodiment may further include: a fourth switch 17, the first end of which is electrically connected to the first electrode 101 of the first cell 10, the second end of which is electrically connected to the power interface 12, and the third end of which is electrically connected to the controller 15; and a fifth switch 18, the first end of which is electrically connected to the second electrode 132 of the second cell 13, the second end of which is electrically connected to the power interface 12, and the third end of which is electrically connected to the controller 15.

[0071] In some examples, the fourth switch 17 can include, but is not limited to, a single-pole single-throw switch, a single-pole double-throw switch, a double-pole double-throw switch, or the like.

[0072] In some examples, the first end of the fourth switch 17 can be a power output end, and the second end of the fourth switch 17 can be a power input end.

[0073] In some examples, the fifth switch 18 can include, but is not limited to, a single-pole single-throw switch, a single-pole double-throw switch, a double-pole double-throw switch, or the like.

[0074] In some examples, the first end of the fifth switch 18 can be a power input end, and the second end of the fifth switch 18 can be a power output end.

[0075] In the embodiments of the present application, the controller 15 is further configured to disconnect at least one of the fourth switch 17 and the fifth switch 18 when controlling the variable resistor 11 to adjust the resistance parameter of the variable resistor 11.

[0076] It can be understood that the controller 15 can disconnect at least one of the fourth switch 17 and the fifth switch 18 when controlling the variable resistor 11 to adjust the resistance parameter of the variable resistor 11 and controlling the switch assembly 14 to turn on the paths between the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13 and between the second pole 102 of the first battery cell 10 and the second pole 132 of the second battery cell 13, so that the power interface 12 can be prevented from being electrically connected to the first pole 101 of the first battery cell 10 and the first pole 131 of the second battery cell 13, and further, the electrical signal of the battery cell with lower power in the first battery cell and the second battery cell can be prevented from being disturbed.

[0077] In some examples, the controller 15 is further configured to turn on the fourth switch 17 and the fifth switch 18 when performing processes other than controlling the variable resistor 11 to adjust the resistance parameter.

[0078] For example, the controller 15 can turn on the fourth switch 17 and the fifth switch 18 when it is necessary to charge the first battery cell 10.

[0079] For another example, the controller 15 can turn on the fourth switch 17 and the fifth switch 18 when it is necessary to charge the second battery cell 13.

[0080] For another example, the controller 15 can turn on the fourth switch 17 and the fifth switch 18 when it is necessary to charge the first battery cell 10 and the second battery cell 13.

[0081] For another example, the controller 15 can turn on the fourth switch 17 and the fifth switch 18 when it is necessary to supply power through the first battery cell 10 and the second battery cell 10.

[0082] Therefore, since the fourth switch element and the fifth switch element are further arranged in the battery, on one hand, the controller can disconnect at least one of the fourth switch element and the fifth switch element to disconnect the power interface from electrically connecting to the first pole of the first battery cell and the first pole of the second battery cell during the process of controlling the variable resistance element to adjust the resistance parameter, so that the electric signal of the battery cell with lower electric quantity in the first battery cell and the second battery cell can be avoided from being interfered, and the health state of the battery cell can be accurately detected; on the other hand, the controller can turn on the fourth switch element and the fifth switch element during the process of adjusting the resistance parameter of the variable resistance element, so that at least one of the first battery cell and the second battery cell can be charged through the power interface, and the first battery cell and the second battery cell can be ensured to be normally used.

[0083] To solve the above technical problem, an electronic device is provided in the embodiments of the present application. Figure 5 The structure schematic diagram of the electronic device provided by the embodiments of the present application is shown. As shown in the figure, Figure 5 The electronic device 20 provided by the embodiments of the present application can include the battery 21 in the above embodiments.

[0084] The electronic device provided by the embodiments of the present application includes the battery in the above embodiments. Since the switch assembly and the controller are arranged in the battery, in the case that the varying current is input to the battery cell, the health state of the battery cell is related to the electric signal of the battery cell, so the controller can control the switch assembly to turn on the path between the second pole of the first battery cell and the power interface of the battery, or the path between the first pole of the first battery cell and the first pole of the second battery cell, so that the electric quantity of the first battery cell is different from the electric quantity of the second battery cell, and the path between the first pole of the first battery cell and the first pole of the second battery cell and the path between the second pole of the first battery cell and the second pole of the second battery cell are turned on, so that the first battery cell and the second battery cell are connected in parallel. In this way, since the electric quantity of the first battery cell is different from the electric quantity of the second battery cell, the battery cell with higher electric quantity can input the current to the battery cell with lower electric quantity, and the controller can control the variable resistance element to adjust the resistance parameter of the variable resistance element, so that the battery cell with higher electric quantity can input the varying current to the battery cell with lower electric quantity, so that the health state of the battery cell with lower electric quantity is related to the electric signal of the battery cell with lower electric quantity. Therefore, the controller can accurately detect the health state of the battery cell according to the electric signal of the battery cell with lower electric quantity, identify the potential problem of the battery in time, and avoid affecting the performance of the electronic device.

[0085] To solve the above technical problem, a method for determining the health state of a battery is provided in the embodiments of the present application. Figure 6A flowchart of a method for determining battery health status is shown. As shown in Figure 6 The method for determining battery health status can include the following step 101.

[0086] In step 101, the electronic device determines health status information of a target cell according to an electrical signal of the target cell of the battery of the electronic device, the target cell being a first cell or a second cell of the battery; wherein, in a case where the health status information of the target cell is determined, the controller of the battery controls the switch assembly of the battery to conduct a path between a second pole of the first cell and a power interface of the battery, or a path between a first pole of the first cell and a first pole of the second cell, so that the electric quantity of the first cell and the electric quantity of the second cell are different; the controller of the battery further controls the variable resistance component of the battery to adjust the resistance parameter of the variable resistance component, and controls the switch assembly to conduct the path between the first pole of the first cell and the first pole of the second cell, and the path between the second pole of the first cell and the second pole of the second cell.

[0087] In a possible implementation of the present application, in a case where the controller controls the switch assembly of the battery to conduct the path between the second pole of the first cell and the power interface of the battery, the power interface of the battery charges the first cell, so that the electric quantity of the first cell is greater than the electric quantity of the second cell, and the target cell is the second cell. In a case where the controller controls the variable resistance component of the battery to adjust the resistance parameter of the variable resistance component, and controls the switch assembly to conduct the path between the first pole of the first cell and the first pole of the second cell, and the path between the second pole of the first cell and the second pole of the second cell, the first cell and the second cell are connected in parallel, the first cell can output a varying electrical signal to the second cell, and the health status information of the second cell is related to the electrical signal of the second cell. Therefore, the electronic device can determine the health status information of the second cell according to the electrical signal of the second cell.

[0088] In another possible implementation of the present application, in a case where the controller controls the switch assembly of the battery to conduct the path between the first pole of the first cell and the first pole of the second cell, the power interface of the battery charges the second cell, so that the electric quantity of the second cell is greater than the electric quantity of the first cell, and the target cell is the first cell. In a case where the controller controls the variable resistance component of the battery to adjust the resistance parameter of the variable resistance component, and controls the switch assembly to conduct the path between the first pole of the first cell and the first pole of the second cell, and the path between the second pole of the first cell and the second pole of the second cell, the first cell and the second cell are connected in parallel, the second cell can output a varying electrical signal to the first cell, and the health status information of the first cell is related to the electrical signal of the first cell. Therefore, the electronic device can determine the health status information of the first cell according to the electrical signal of the first cell.

[0089] In some embodiments of the present application, the health status information can include, but is not limited to, at least one of the following: SOC, SOH, etc.

[0090] In some embodiments of the present application, the control of the variable resistor of the battery to adjust the resistance parameter of the variable resistor includes: controlling the variable resistor to adjust the resistance parameter according to a preset change rule.

[0091] In the embodiments of the present application, the preset change rule includes:

[0092] In each of the at least two preset times, the parameter value of the resistance parameter reciprocates between the first parameter value and the second parameter value once; wherein the length of each of the at least two preset times is different.

[0093] In some examples, the length of each of the at least two preset times can include, but is not limited to, any one of [0.001, 0.002, 0.003,..., 10], and the unit of the length can include, but is not limited to, seconds, milliseconds, microseconds, etc. For example, when the length of one of the preset times is 0.001, the length of the one of the preset times is 0.001 seconds.

[0094] In some examples, the first parameter value is less than the second parameter value, and both the first parameter value and the second parameter value can be positive numbers. Wherein the first parameter value can be 10, and the second parameter value can be 1000, of course, the first parameter value and the second parameter value can also be other values, which are not limited in the embodiments of the present application.

[0095] In some examples, the electronic device can first control the variable resistor to adjust the parameter value of the resistance parameter of the variable resistor to the first parameter value, and then in the first of the at least two preset times, the electronic device can control the parameter value of the resistance parameter of the variable resistor to change from the first parameter value to the second parameter value, and then change from the second parameter value to the first parameter value, wherein the rate of change of the parameter value can be uniform or non-uniform, which is not limited in the embodiments of the present application. Next, in the second of the at least two preset times, the electronic device can control the parameter value of the resistance parameter of the variable resistor to change from the first parameter value to the second parameter value, and then change from the second parameter value to the first parameter value. And so on.

[0096] In another example, the electronic device can first control the variable electrical component to adjust the parameter value of the resistance parameter of the variable electrical component to the second parameter value, and then in a first preset time of the at least two preset times, the electronic device can control the parameter value of the resistance parameter of the variable electrical component to change from the second parameter value to the first parameter value, and then from the first parameter value to the second parameter value, where the rate of change of the parameter value can be uniform or non-uniform, and the embodiments of the present application do not limit this. Next, in a second preset time of the at least two preset times, the electronic device can control the parameter value of the resistance parameter of the variable electrical component to change from the second parameter value to the first parameter value, and then from the first parameter value to the second parameter value. And so on.

[0097] It can be understood that in the case where the variable electrical component 11 adjusts the resistance parameter of the variable electrical component 11 according to the preset change rule, the amplitude of the electrical signal output by one of the first battery and the second battery (for example, the battery with more power) to the other battery (for example, the battery with less power) will also change according to the preset change rule. For example, in the process of increasing the parameter value of the resistance parameter of the variable electrical component from the first parameter value to the second parameter value and then decreasing the parameter value of the resistance parameter from the second parameter value to the first parameter value in a preset time, the amplitude of the electrical signal will first decrease by a corresponding value and then increase by a corresponding value in the preset time. And so on, so that the electrical signal can be modulated into a frequency-varying sinusoidal electrical signal. That is, the battery with more power among the first battery and the second battery can output a frequency-varying sinusoidal electrical signal to the battery with less power. At this time, the health state of the battery with less power and the correlation of the electrical signal of the battery with less power are higher, for example, higher than other changed electrical signals, so that the health state information of the battery with less power can be accurately determined according to the electrical signal of the battery with less power.

[0098] As can be seen, since the preset change rule includes that the parameter value of the resistance parameter of the variable electrical component reciprocates between the first parameter value and the second parameter value once in each of the at least two preset times, and the length of each preset time is different, in the case where the electronic device controls the variable electrical component to adjust the resistance parameter of the variable electrical component according to the preset change rule, one of the first battery and the second battery (for example, the battery with more power) outputs a frequency-varying sinusoidal electrical signal to the other battery (for example, the battery with less power). At this time, the health state of the battery with less power and the correlation of the electrical signal of the battery with less power are higher, so that the controller can accurately determine the health state information of the battery with less power according to the electrical signal of the battery with less power, and therefore the accuracy of the electronic device in determining the health state information of the battery can be improved.

[0099] In some embodiments of the present application, the electronic device can control the electronic device to start charging when detecting that the charger of the electronic device is connected, and stop charging when the power of the first battery cell and the second battery cell of the electronic device reaches a predetermined power threshold and the system time of the electronic device is within a first time period, and control the variable resistor of the battery to adjust the resistance parameter of the variable resistor according to a preset change rule after a first time period from the time when the charging is stopped, and control the switch assembly of the battery to turn on the path between the first pole of the first battery cell and the first pole of the second battery cell of the battery, and the path between the second pole of the first battery cell and the second pole of the second battery cell.

[0100] The predetermined power threshold is any power percentage value greater than 0% and less than 100%, for example, the predetermined power threshold can be 80%, of course, the predetermined power threshold can also be other percentage values, and the embodiments of the present application are not limited thereto. The predetermined power threshold can be set by the user, or preset by the electronic device, or determined according to the historical use data of the user.

[0101] The first time period can be set by the user, or preset by the electronic device, or determined according to the historical use data of the user. For example, the first time period is determined according to the historical use data of the user, and the historical use data indicates that the user charges the electronic device from 22:00 to 5:00, then the first time period can be from 22:00 to 5:00.

[0102] The first time period can be any time period greater than or equal to 1 minute, for example, the first time period can be 30 minutes, of course, the first time period can also be other time periods, and the embodiments of the present application are not limited thereto.

[0103] It can be understood that after charging the first battery cell and the second battery cell of the electronic device, the first battery cell and the second battery cell may need to wait for a period of time before they are in a stable state. Therefore, in order to avoid inaccurate health status information of the electronic device due to the first battery cell and the second battery cell not being in a stable state, the variable resistor of the battery can be controlled to adjust the resistance parameter of the variable resistor according to a preset change rule, and the switch assembly of the battery can be controlled to turn on the path between the first pole of the first battery cell and the first pole of the second battery cell of the battery, and the path between the second pole of the first battery cell and the second pole of the second battery cell after a first time period from the time when the charging is stopped, and determine the health status information of the target battery cell.

[0104] In some embodiments of the present application, the electrical signal can include a voltage signal and a current signal, so that the electronic device can calculate at least two impedances of the target battery cell according to the voltage signal and the current signal of the target battery cell, and calculate the health status information of the target battery cell according to the at least two components.

[0105] In some embodiments of the present application, the combination of Figure 6 As shown in the above step 101, the step 101 can be implemented by the following steps 101a to 101c. Figure 7

[0106] In the step 101a, the electronic device determines the impedance of the target battery cell according to the electrical signal of the target battery cell when the parameter value of the resistance parameter of the variable resistance component reciprocates once, and obtains at least two impedances.

[0107] It can be understood that in the first preset time, the electronic device can control the parameter value of the resistance parameter of the variable resistance component to reciprocate once between the first parameter value and the second parameter value, and at this time, the electronic device can determine the first impedance of the target battery cell according to the electrical signal of the target battery cell; then, in the second preset time, the electronic device can control the parameter value of the resistance parameter of the variable resistance component to reciprocate once between the first parameter value and the second parameter value, and at this time, the electronic device can determine the second impedance of the target battery cell according to the electrical signal of the target battery cell, and so on, to determine at least two impedances.

[0108] In some examples, the electronic device can first determine the length of the first preset time, and at the time when the electronic device controls the variable resistance component of the battery to adjust the resistance parameter of the variable resistance component according to the preset change rule, and controls the switch assembly of the battery to turn on the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell, the electronic device starts to control the parameter value of the resistance parameter of the variable resistance component to reciprocate once between the first parameter value and the second parameter value at the time when the time of the first preset time starts, and determines the first impedance of the target battery cell according to the voltage signal and the current signal of the target battery cell when the parameter value of the resistance parameter reciprocates once; then, the electronic device determines the length of the second preset time, and starts to control the parameter value of the resistance parameter of the variable resistance component to reciprocate once between the first parameter value and the second parameter value at the time when the second length of time after determining the first impedance, and determines the second impedance of the target battery cell according to the voltage signal and the current signal of the target battery cell when the parameter value of the resistance parameter reciprocates once; then, the electronic device determines the length of the third preset time, and starts to control the parameter value of the resistance parameter of the variable resistance component to reciprocate once between the first parameter value and the second parameter value at the time when the second length of time after determining the second impedance, and determines the third impedance of the target battery cell according to the voltage signal and the current signal of the target battery cell when the parameter value of the resistance parameter reciprocates once; and so on, until the above at least two impedances are determined.

[0109] ​It can be understood that, since the target battery may need a period of time to be in a stable state in the case of inputting the current signal and the voltage signal to the target battery, in order to avoid that the determined impedance of the target battery is inaccurate due to the target battery not being in a stable state, the electronic device can wait for a second time duration after completing determination of the jth impedance of the target battery, and then determine the (j+1)th impedance of the target battery, where j is a positive integer greater than 1.

[0110] The specific scheme in which the electronic device determines the impedance of the target battery will be described below.

[0111] In some examples, the above-mentioned electrical signal includes a voltage signal and a current signal. Optionally, the above-mentioned step 101a can be implemented through the following steps 101a1 and 101a2.

[0112] Step 101a1, the electronic device determines a first amplitude variation parameter according to the voltage signal of the target battery and a second amplitude variation parameter according to the current signal of the target battery in the case of the parameter value of the resistance parameter reciprocating once.

[0113] It can be understood that the electronic device can determine at least two first amplitude variation parameters and at least two second amplitude variation parameters.

[0114] In the embodiments of the present application, the above-mentioned first amplitude variation parameter is an amplitude variation parameter of the voltage signal of the target battery within a preset time corresponding to the parameter value of the resistance parameter reciprocating once, and the above-mentioned second amplitude variation parameter is an amplitude variation parameter of the current signal of the target battery within a preset time corresponding to the parameter value of the resistance parameter reciprocating once.

[0115] It can be understood that, in the case of the electronic device determining a first first amplitude variation parameter and a second second amplitude variation parameter for the first time, the electronic device can control the variable resistance component of the battery to adjust the resistance parameter of the variable resistance component according to the preset variation rule, and control the switch assembly of the battery to turn on the path between the first pole of the first battery and the first pole of the second battery of the battery, and the path between the second pole of the first battery and the second pole of the second battery, start to control the parameter value of the resistance parameter of the variable resistance component to reciprocate once between the first parameter value and the second parameter value within a first preset time, and in the case of the parameter value of the resistance parameter reciprocating once, determine a first first amplitude variation parameter according to the voltage signal of the target battery, the first first amplitude variation parameter being an amplitude variation parameter of the voltage signal of the target battery within the first preset time, and determine a second second amplitude variation parameter according to the current signal of the target battery, the second second amplitude variation parameter being an amplitude variation parameter of the current signal of the target battery within the first preset time.

[0116] In a case where the electronic device determines the first amplitude variation parameter and the second amplitude variation parameter for the jth time, the electronic device can start to control the parameter value of the resistance parameter of the variable resistance component to reciprocate between the first parameter value and the second parameter value once within the jth preset time at a time point after a second time length after a time point at which the first amplitude variation parameter and the second amplitude variation parameter are determined for the first time, and in a case where the parameter value of the resistance parameter reciprocates once, determine a jth first amplitude variation parameter according to the voltage signal of the target battery cell, the jth first amplitude variation parameter being an amplitude variation parameter of the voltage signal of the target battery cell within the jth preset time, and determine a jth second amplitude variation parameter according to the current signal of the target battery cell, the jth second amplitude variation parameter being an amplitude variation parameter of the current signal of the target battery cell within the first preset time, j being a positive integer greater than 1.

[0117] In a case where the electronic device determines the first amplitude variation parameter and the second amplitude variation parameter for the jth time, the electronic device can start to control the parameter value of the resistance parameter of the variable resistance component to reciprocate between the first parameter value and the second parameter value once within the jth preset time at a time point after a second time length after a time point at which the first amplitude variation parameter and the second amplitude variation parameter are determined for the first time, and in a case where the parameter value of the resistance parameter reciprocates once, determine a jth first amplitude variation parameter according to the voltage signal of the target battery cell, the jth first amplitude variation parameter being an amplitude variation parameter of the voltage signal of the target battery cell within the jth preset time, and determine a jth second amplitude variation parameter according to the current signal of the target battery cell, the jth second amplitude variation parameter being an amplitude variation parameter of the current signal of the target battery cell within the first preset time, j being a positive integer greater than 1.

[0118] Optionally, the first amplitude variation parameter can be a difference between a maximum amplitude value and a minimum amplitude value of the voltage signal of the target battery cell within a preset time corresponding to the parameter value of the resistance parameter reciprocating once. The second amplitude variation parameter can be a difference between a maximum amplitude value and a minimum amplitude value of the current signal of the target battery cell within a preset time corresponding to the parameter value of the resistance parameter reciprocating once.

[0119] For example, as shown in FIG. 6, the electronic device can determine the first amplitude variation parameter and the second amplitude variation parameter for the first time at a time point t0, and then determine the first amplitude variation parameter and the second amplitude variation parameter for the second time at a time point t1. Figure 8As shown, assuming that the maximum amplitude of the voltage signal of the target battery cell in the preset time corresponding to one reciprocating change of the parameter value of the resistance parameter is v1, the minimum amplitude is v2, the maximum amplitude of the current signal of the target battery cell in the preset time corresponding to one reciprocating change of the parameter value of the resistance parameter is I1, and the minimum amplitude is I2, the electronic device can determine a first amplitude variation parameter according to the voltage signal of the target battery cell, the first amplitude variation parameter being the difference between v1 and v2; and the electronic device can determine a second amplitude variation parameter according to the current signal of the target battery cell, the second amplitude variation parameter being the difference between I1 and I2.

[0120] Step 101a2, the electronic device determines the ratio of the first amplitude variation parameter and the second amplitude variation parameter as the impedance of the target battery cell, and obtains at least two impedances.

[0121] It can be understood that the electronic device can determine the ratio of the first amplitude variation parameter and the second amplitude variation parameter determined at the same time as one impedance of the target battery cell.

[0122] For example, the electronic device can determine the impedance of the target battery cell in the preset time corresponding to one reciprocating change of the parameter value of the resistance parameter by using a first algorithm, and the first algorithm is:

[0123]

[0124] Wherein, Z is the impedance of the target battery cell in the preset time corresponding to one reciprocating change of the parameter value of the resistance parameter.

[0125] It can be understood that the electronic device can execute the above-mentioned step 101a1 and step 101a2 once under the condition that the parameter value of the resistance parameter is reciprocated once, and obtain one impedance of the target battery cell, and so on, to obtain the above-mentioned at least two impedances.

[0126] As can be seen, since the impedance of the battery cell is related to the amplitude variation parameter of the voltage signal of the battery cell and the amplitude variation parameter of the current signal of the battery cell, the electronic device can accurately determine one impedance of the target battery cell according to the ratio of the first amplitude variation parameter of the voltage signal of the target battery cell and the second amplitude variation parameter of the current signal of the target battery cell under the condition that the parameter value of the resistance parameter is reciprocated once, to accurately determine at least two impedances, so that in the subsequent steps, the electronic device can accurately determine the impedance spectrum of the target battery cell according to the at least two impedances, and accurately determine the health status information of the target battery cell according to the impedance spectrum of the target battery cell.

[0127] Step 101b, the electronic device determines the impedance spectrum of the target battery cell according to the at least two impedances.

[0128] In some examples, the electronic device can first determine a phase according to each impedance and a voltage signal and a current signal corresponding to the impedance, then determine an impedance real part and an impedance imaginary part corresponding to each impedance according to each phase and each impedance corresponding to the phase, and generate an impedance spectrum of the target battery cell according to the impedance real part and the impedance imaginary part corresponding to each impedance.

[0129] The impedance corresponding voltage signal and the impedance corresponding current signal can be understood as the voltage signal and the current signal used to determine the impedance. Each phase and each impedance corresponding to the phase can be understood as each phase and the impedance used to determine the phase.

[0130] Optionally, the electronic device can use a second algorithm to determine a phase according to each impedance and a voltage signal and a current signal corresponding to the impedance, the second algorithm being:

[0131]

[0132] wherein Ph diff is the phase, t1 is the time at which the maximum value of the amplitude of the current signal corresponding to the impedance occurs, t2 is the time at which the maximum value of the amplitude of the voltage signal corresponding to the impedance occurs, and delT is the length of the preset time corresponding to one round of variation of the parameter value of the resistance parameter.

[0133] For example, in combination with Figure 8 , the electronic device can use a second algorithm to determine a phase according to the impedance and the voltage signal and the current signal corresponding to the impedance obtained by the electronic device based on the first amplitude variation parameter and the second amplitude variation parameter determined for the fourth time. Wherein t1 is the time at which the maximum value of the amplitude of the current signal corresponding to the impedance occurs, and t2 is the time at which the maximum value of the amplitude of the voltage signal corresponding to the impedance occurs.

[0134] Optionally, the electronic device can use a third algorithm to determine an impedance real part corresponding to each impedance according to each phase and each impedance corresponding to the phase, and use a fourth algorithm to determine an impedance imaginary part corresponding to each impedance according to each phase and each impedance corresponding to the phase.

[0135] The third algorithm is:

[0136] Z real = Z * cos(Ph diff );

[0137] wherein Z real is the impedance real part, Z is the impedance, and Ph diff is the phase.

[0138] The fourth algorithm is:

[0139] Z imagZ*sin(Ph diff );

[0140] wherein, Z imag is the real part of impedance, Z is the impedance, and Ph diff is the phase.

[0141] It can be understood that the electronic device can determine one real part of impedance and one imaginary part of impedance according to each impedance, so as to obtain at least two real parts of impedance and at least two imaginary parts of impedance.

[0142] Optionally, the electronic device can map one real part of impedance and one imaginary part of impedance corresponding to each impedance to a point in a first coordinate system, so as to obtain the impedance spectrum of the target battery. The vertical axis of the first coordinate system can correspond to the imaginary part of impedance, and the horizontal axis of the first coordinate system can correspond to the real part of impedance.

[0143] For example, the electronic device can map one real part of impedance and one imaginary part of impedance corresponding to each impedance to a point in a first coordinate system in Figure 9 , so as to obtain the curve shown in Figure 9 , wherein the vertical axis of the first coordinate system can correspond to the imaginary part of impedance, and the horizontal axis of the first coordinate system can correspond to the real part of impedance.

[0144] Step 101c, the electronic device determines the health state information of the target battery according to the impedance spectrum.

[0145] In some examples, the electronic device can calculate the above-mentioned health state information according to the characteristics of the curve in the impedance spectrum (or the characteristics of the curve and the absolute values of the at least two impedances). The characteristics of the curve can include, but are not limited to, at least one of the following: the radius of the curve, the curvature of the curve, the intersection of the curve and the horizontal axis, the intersection of the curve and the vertical axis, etc.

[0146] It should be noted that the description of the electronic device calculating the above-mentioned health state information according to the characteristics of the curve in the impedance spectrum can refer to the specific description of the electrochemical impedance spectroscopy (EIS) technology in the related art, and the embodiments of the present application will not be described here.

[0147] Therefore, the electronic device can accurately determine the health state information of the target battery according to the impedance spectrum.

[0148] It can be understood that the application of electrochemical impedance spectroscopy (EIS) technology in the field of battery detection brings significant improvement in accuracy, especially in the state detection of batteries. Through the EIS technology, the health state information of the target battery cell can be more accurately evaluated, because the shapes of the EIS curves obtained under different health state information are quite different, that is, the EIS curve and the health state information are related. This improvement in accuracy not only optimizes the monitoring and management of the battery, but also provides a solid foundation for preventive battery maintenance.

[0149] The embodiment of the present application provides a method for determining the health state of a battery. An electronic device can determine the health state information of a target battery cell according to an electrical signal of the target battery cell of a battery of the electronic device, the target battery cell being a first battery cell or a second battery cell of the battery; wherein, in the case of determining the health state information of the target battery cell, a controller of the battery controls a switching assembly of the battery to conduct a path between a second pole of the first battery cell and a power interface of the battery, or a path between a first pole of the first battery cell and a first pole of the second battery cell, so that the electric quantity of the first battery cell and the electric quantity of the second battery cell are different; the controller of the battery also controls a variable resistance component of the battery to adjust the resistance parameter of the variable resistance component, and controls the switching assembly to conduct the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell. Since the health state of the battery cell is related to the electrical signal of the battery cell in the case of passing a varying current to the battery cell, in the case of determining the health state information of the target battery cell, the controller of the battery can control the switching assembly of the battery to conduct the path between the second pole of the first battery cell and the power interface of the battery, or the path between the first pole of the first battery cell and the first pole of the second battery cell, so that the electric quantity of the first battery cell and the electric quantity of the second battery cell are different, and conduct the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell, so that the first battery cell and the second battery cell are connected in parallel. In this way, because the electric quantity of the first battery cell and the electric quantity of the second battery cell are different, the battery cell with higher electric quantity among the first battery cell and the second battery cell can pass a current to the battery cell with lower electric quantity among the first battery cell and the second battery cell, and the controller of the battery can control the variable resistance component of the battery to adjust the resistance parameter of the variable resistance component, so that the battery cell with higher electric quantity among the first battery cell and the second battery cell can pass a varying current to the battery cell with lower electric quantity among the first battery cell and the second battery cell, so that the health state of the battery cell with lower electric quantity is related to the electrical signal of the battery cell with lower electric quantity. Therefore, the electronic device can accurately detect the health state of the target battery cell according to the electrical signal of the target battery cell (for example, the battery cell with lower electric quantity), identify potential problems of the battery in time, and avoid affecting the performance of the electronic device.

[0150] It can be understood that the electronic device in the embodiments of the present application can accurately determine the health state information of the two battery cells, so as to determine the health state of the two battery cells through the health state information of the two battery cells, so that the user can adjust the use strategy before the battery cell fails. For example, by dynamically adjusting the voltage threshold or the charge and discharge cycle parameter of the battery cell of the battery to adapt to the current health state of the battery cell, thereby prolonging the service life of the battery. Such adaptive adjustment strategy helps to reduce the safety risk of the battery, reduce damage caused by overcharging or overdischarging, and ultimately protect the battery from extreme conditions.

[0151] The complete process of the embodiments of the present application will be illustrated below.

[0152] The battery health state determination method provided by the embodiments of the present application can include steps 1-6 as follows.

[0153] Step 1, the electronic device detects that the charger is connected, and controls the electronic device to start charging;

[0154] Step 2: The electronic device analyzes according to the user's use habit, if the user is used to charging at night, the charging is stopped when the electronic device is charged to 80%, and the fourth switch and the fifth switch are disconnected;

[0155] Step 3: When the charging is stopped, the stop charging time reaches 30 minutes, and the battery EIS detection is started;

[0156] Step 4: Impedance spectrum calculation of the second battery cell:

[0157] Step 4-1: Close the fourth switch, the first switch and the fifth switch, disconnect the second switch and the third switch, adjust the resistance parameter (such as resistance value) of the variable resistor to 0 ohm, detect the voltage initial value of the first battery cell and the second battery cell, start charging the first battery cell with 100mA charging current, and the charging end condition is that the voltage of the first battery cell is higher than the voltage of the second battery cell by 0.1V;

[0158] Step 4-2: Adjust the resistance parameter (such as resistance value) of the variable resistor to 1000Ω;

[0159] Step 4-3: Connect the first battery cell and the variable resistor in series and then connect them in parallel with the second battery cell, that is, turn on the first switch and the second switch, and disconnect the third switch, the fourth switch and the fifth switch;

[0160] Step 4-4: Set the impedance frequency (resistance value change speed), the frequency range is 1000Hz-0.1Hz, and the value of delT time is [0.001, 0.002, 0.003, …, 10] (the smaller the delT, the faster the resistance changes, that is, the higher the frequency), unit: seconds;

[0161] Step 4-5: The resistance parameter (e.g., resistance value) of the variable resistance component linearly decreases to 10Ω over a deltT time;

[0162] Step 4-6: The resistance parameter (e.g., resistance value) of the variable resistance component linearly increases to 1000Ω over a deltT time;

[0163] Step 4-7: Calculate the impedance of the second battery at this frequency to obtain an impedance of the second battery;

[0164] Step 4-8: Stand for 10 minutes or 30 minutes, change the deltT time, and perform steps 4-5 to 4-8 again based on the changed deltT time, and so on, to obtain at least two impedances of the second battery;

[0165] Step 4-9: According to the at least two impedances of the second battery, determine the impedance spectrum of the second battery, and according to the impedance spectrum of the second battery, determine the state of health information of the second battery;

[0166] It can be understood that in step 4, the target battery is the second battery;

[0167] Step 5: Impedance spectrum calculation of the first battery:

[0168] Step 5-1: Close the fourth switch component, the second switch component, and the fifth switch component, open the first switch component and the third switch component, adjust the resistance parameter (e.g., resistance value) of the variable resistance component to 0Ω, detect the initial voltage of the first battery and the second battery, start charging the second battery with a 100mA charging current, and the charging end condition is that the voltage of the second battery is higher than the voltage of the first battery by 0.1V;

[0169] Step 5-2: Adjust the resistance parameter (e.g., resistance value) of the variable resistance component to 1000Ω;

[0170] Step 5-3: Connect the first battery in series with the variable resistance component and then in parallel with the second battery, i.e., turn on the first switch component and the second switch component, and turn off the third switch component, the fourth switch component, and the fifth switch component;

[0171] Step 5-4: Set the impedance frequency (resistance value change speed), the frequency range is 1000Hz-0.1Hz, and the deltT time is [0.001, 0.002, 0.003, …, 10] (the smaller the deltT, the faster the resistance changes, i.e., the higher the frequency), in seconds.

[0172] Step 5-5: The resistance parameter (e.g., resistance value) of the variable resistance component linearly decreases to 10Ω over a deltT time;

[0173] Step 5-6: The resistance parameter (e.g., resistance value) of the variable resistance component is linearly increased to 1000Ω along the deltT timeline;

[0174] Step 5-7: The impedance of the first cell at this frequency is calculated to obtain an impedance of the first cell;

[0175] Step 5-8: Stand for 10 minutes or 30 minutes, change the deltT time, and execute steps 5-5 to 5-8 again based on the changed deltT time, and so on, to obtain at least two impedances of the first cell;

[0176] Step 5-9: According to the at least two impedances of the first cell, the impedance spectrum of the first cell is determined, and according to the impedance spectrum of the first cell, the health state information of the first cell is determined;

[0177] Step 6: After detection, continue to charge to 100%.

[0178] As can be seen from the above, the electronic device in the embodiments of the present application can accurately determine the health state information of the cell, so that the user can adjust the use strategy before the cell of the battery fails. For example, by dynamically adjusting the voltage threshold or the charge and discharge cycle parameter of the cell of the battery to adapt to the current health state of the cell of the battery, the service life of the battery is prolonged. This adaptive adjustment strategy helps to reduce the safety risk of the battery, reduce the damage caused by overcharging or overdischarging, and ultimately protect the battery from extreme conditions.

[0179] Figure 10 A structural schematic diagram of a battery health state determination apparatus provided by an embodiment of the present application is shown, which is applied to the electronic device in the above embodiment. As shown in Figure 10 The battery health state determination apparatus 400 provided by the embodiment of the present application can include a determination module 401.

[0180] The determination module 401 is configured to determine the health state information of a target cell according to an electrical signal of the target cell of a battery of an electronic device, the target cell being a first cell or a second cell of the battery; wherein, in the case of determining the health state information of the target cell, a controller of the battery controls a switch assembly of the battery to turn on a path between a second pole of the first cell and a power interface of the battery, or to turn on a path between a first pole of the first cell and a first pole of the second cell, so that the electric quantity of the first cell and the electric quantity of the second cell are different; and controls a variable resistance component of the battery to adjust a resistance parameter of the variable resistance component, and controls the switch assembly to turn on the path between the first pole of the first cell and the first pole of the second cell, and the path between the second pole of the first cell and the second pole of the second cell.

[0181] The embodiment of the present application provides a kind of determination device of battery health state, since in the case where varying current is passed to battery cell, the health state of battery cell and the electric signal of battery cell are related, so in the case where the health state information of target battery cell is determined, the controller of battery can control the switch assembly of battery to connect the passage between the second pole of first battery cell and the power interface of battery, or the passage between the first pole of first battery cell and the first pole of second battery cell, so that the electric quantity of first battery cell and the electric quantity of second battery cell are different, and the passage between the first pole of first battery cell and the first pole of second battery cell is connected, and the passage between the second pole of first battery cell and the second pole of second battery cell is connected, so that first battery cell and second battery cell are connected in parallel, so that the electric quantity of first battery cell and second battery cell is different, the battery cell with higher electric quantity in first battery cell and second battery cell can pass current to the battery cell with lower electric quantity in first battery cell and second battery cell, and the controller of battery can control the variable resistance piece of battery to adjust the resistance parameter of variable resistance piece, so that the battery cell with higher electric quantity in first battery cell and second battery cell can pass varying current to the battery cell with lower electric quantity, so that the health state of the battery cell with lower electric quantity and the electric signal of the battery cell with lower electric quantity are related, therefore, the electronic equipment can accurately detect the health state of target battery cell according to the electric signal of target battery cell (for example, the battery cell with lower electric quantity), identify potential problems of battery in time, and avoid affecting the performance of electronic equipment.

[0182] In a possible implementation, the controller controls the variable resistance piece to adjust the resistance parameter of the variable resistance piece, including: controlling the variable resistance piece to adjust the resistance parameter according to a preset variation rule; wherein the preset variation rule includes: in each of at least two preset times, the parameter value of the resistance parameter reciprocates between a first parameter value and a second parameter value once; wherein the length of each preset time is different.

[0183] In a possible implementation, the determination module 401 is specifically configured to, in the case where the parameter value of the resistance parameter reciprocates once, determine the impedance of the target battery cell according to the electric signal of the target battery cell, to obtain at least two impedances; and determine the impedance spectrum of the target battery cell according to the at least two impedances; and determine the health state information of the target battery cell according to the impedance spectrum.

[0184] In a possible implementation, the electrical signal includes a voltage signal and a current signal. The determination module 401 is specifically configured to determine a first amplitude variation parameter according to the voltage signal of the target battery cell, and determine a second amplitude variation parameter according to the current signal of the target battery cell, the first amplitude variation parameter being an amplitude variation parameter of the voltage signal of the target battery cell within a preset time corresponding to one reciprocating change of the parameter value of the resistance parameter, the second amplitude variation parameter being an amplitude variation parameter of the current signal of the target battery cell within a preset time corresponding to one reciprocating change of the parameter value of the resistance parameter, and determine the impedance of the target battery cell according to a ratio of the first amplitude variation parameter and the second amplitude variation parameter.

[0185] The battery state of health determination method provided in the embodiments of the present application can be executed by a battery state of health determination device. The battery state of health determination method is executed by the battery state of health determination device in the embodiments of the present application, and the battery state of health determination device provided in the embodiments of the present application is described.

[0186] The battery state of health determination device in the embodiments of the present application can be an electronic device or a component in an electronic device, for example, an integrated circuit or a chip. The electronic device can be a terminal or other devices other than the terminal. For example, the electronic device can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and the like. The electronic device can also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, and the like. The embodiments of the present application are not limited in this regard.

[0187] The battery state of health determination device in the embodiments of the present application can be a device with an operating system. The operating system can be an Android operating system, an iOS operating system, or other possible operating systems. The embodiments of the present application are not limited in this regard.

[0188] The battery state of health determination device provided in the embodiments of the present application can achieve the following advantages. Figures 1 to 9The various processes implemented by the method embodiments of the battery health state are not repeated here to avoid repetition.

[0189] In some embodiments of the present application, as shown in Figure 11 The various process steps of the method embodiments of the battery health state are not repeated here to avoid repetition.

[0190] It should be noted that the electronic device in the embodiments of the present application includes the mobile electronic device and the non-mobile electronic device described above.

[0191] Figure 12 A hardware structure schematic diagram of an electronic device for implementing the embodiments of the present application.

[0192] The electronic device 100 includes, but is not limited to, a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110, etc.

[0193] Those skilled in the art can understand that the electronic device 100 can also include a power supply (such as a battery) for powering various components, and the power supply can be logically connected to the processor 110 through a power management system, so as to realize the functions of managing charging, discharging, and power consumption management through the power management system. Figure 12 The electronic device structure shown in the above is not a limitation on the electronic device, and the electronic device can include more or fewer components than the diagram, or combine certain components, or different component arrangements, which are not repeated here.

[0194] The processor 110 is configured to determine the health state information of the target battery cell according to an electrical signal of a target battery cell of the battery, the target battery cell being a first battery cell or a second battery cell of the battery; in a case where the health state information of the target battery cell is determined, a controller of the battery controls a switch assembly of the battery to conduct a path between a second pole of the first battery cell and a power interface of the battery, or to conduct a path between a first pole of the first battery cell and a first pole of the second battery cell, so that the electric quantity of the first battery cell and the electric quantity of the second battery cell are different; and controls a variable resistance piece of the battery to adjust a resistance parameter of the variable resistance piece, and controls the switch assembly to conduct the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell.

[0195] The electronic device provided in the embodiments of the present application can be used to determine the health state information of the target battery cell, and thus can identify potential problems of the battery in time and avoid affecting the performance of the electronic device.

[0196] In some embodiments of the present application, the processor 110 is specifically configured to determine the impedance of the target battery cell according to the electrical signal of the target battery cell when the parameter value of the resistance parameter reciprocates once, to obtain at least two impedances; determine the impedance spectrum of the target battery cell according to the at least two impedances; and determine the health state information of the target battery cell according to the impedance spectrum.

[0197] In some embodiments of the present application, the electrical signal includes a voltage signal and a current signal. The processor 110 is specifically configured to determine a first amplitude variation parameter according to the voltage signal of the target battery cell, and determine a second amplitude variation parameter according to the current signal of the target battery cell, the first amplitude variation parameter being an amplitude variation parameter of the voltage signal of the target battery cell within a preset time corresponding to the reciprocation of the parameter value of the resistance parameter once, the second amplitude variation parameter being an amplitude variation parameter of the current signal of the target battery cell within the preset time corresponding to the reciprocation of the parameter value of the resistance parameter once; and determine the ratio of the first amplitude variation parameter and the second amplitude variation parameter as the impedance of the target battery cell.

[0198] It should be understood that in the embodiments of the present application, the input unit 104 can include a graphics processing unit (GPU) 1041 and a microphone 1042. The graphics processing unit 1041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 106 can include a display panel 1061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 can include two parts of a touch detection device and a touch controller. The other input devices 1072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0199] The memory 109 can be used to store software programs and various data. The memory 109 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 109 can include a volatile memory or a non-volatile memory, or the memory 109 can include both volatile and non-volatile memories. The non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate synchronous DRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 109 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0200] The processor 110 can include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes a wireless communication signal, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 110.

[0201] The embodiment of the application further provides a readable storage medium, and the readable storage medium stores a program or instructions, the program or instructions are executed by a processor to realize each process of the battery state of health determination method embodiment, and the same technical effects can be achieved, to avoid repetition, which will not be repeated here.

[0202] The processor is a processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0203] The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions to realize each process of the battery state of health determination method embodiment, and the same technical effects can be achieved, to avoid repetition, which will not be repeated here.

[0204] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system level chip, a system chip, a chip system, or a system on chip, etc.

[0205] The embodiment of the application provides a computer program product, the program product is stored in a storage medium, the program product is executed by at least one processor to realize each process of the battery state of health determination method embodiment, and the same technical effects can be achieved, to avoid repetition, which will not be repeated here.

[0206] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the method and apparatus of the present application can be carried out by more than one process, method, article, or apparatus either simultaneously, concurrently, or with intermediate steps missing or added. Also, the features described in relation to one example can be combined with features described in relation to other examples.

[0207] From the above description of the embodiments, it is apparent that the above-described method of the embodiments can be implemented by means of software and the requisite general- purpose hardware platform, of course, but in many cases the former is the preferred implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product stored in a storage medium (such as a ROM / RAM, a magnetic disk, an optical disk), including a number of instructions for causing a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method of each embodiment of the present application.

[0208] The embodiments of the present application are described above in conjunction with the drawings, but the present application is not limited to the specific embodiments described above, which are merely illustrative rather than restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. A battery, characterized in that, include: The first cell has its first terminal electrically connected to the first end of the variable resistor and the power interface of the battery, respectively. The second cell has its second terminal electrically connected to the power interface of the battery. A switching assembly, wherein the switching assembly is electrically connected to the second terminal of the variable resistor, the second pole of the first battery cell, the first pole of the second battery cell, and the second pole of the second battery cell; A controller, which is electrically connected to the first battery cell, the second battery cell, the variable resistor, and the switching assembly; The controller is used to control the switching assembly to open the path between the second pole of the first battery cell and the power interface, or the path between the first pole of the first battery cell and the first pole of the second battery cell, so that the charge of the first battery cell and the charge of the second battery cell are different. The controller is also used to control the variable resistor to adjust the resistance parameter of the variable resistor, and to control the switching assembly to open the path between the first pole of the first battery cell and the first pole of the second battery cell, and the path between the second pole of the first battery cell and the second pole of the second battery cell.

2. The battery according to claim 1, characterized in that, The switching assembly includes: A first switching element, wherein a first end of the first switching element is electrically connected to a second end of the variable resistor, a second end of the first switching element is electrically connected to a first electrode of the second battery cell, and a third end of the first switching element is electrically connected to the controller; The second switch has a first end electrically connected to the second pole of the first battery cell, a second end electrically connected to the second pole of the second battery cell, and a third end electrically connected to the controller. Specifically, the controller is used to turn on the first switch and the second switch to open the path between the first electrode of the first battery cell and the first electrode of the second battery cell, as well as the path between the second electrode of the first battery cell and the second electrode of the second battery cell.

3. The battery according to claim 1, characterized in that, The controller is specifically used to turn on the second switch and turn off the first switch to charge the first battery cell through the power interface, so that the charge of the first battery cell is greater than the charge of the second battery cell. Alternatively, the first switch can be turned on and the second switch can be turned off to charge the second cell through the power interface, so that the charge of the second cell is greater than that of the first cell.

4. The battery according to claim 1, characterized in that, The battery also includes: The third switch is electrically connected to the second pole of the first battery cell at its first end, electrically connected to the first pole of the second battery cell at its second end, and electrically connected to the controller at its third end. The controller is further configured to disconnect the third switch during the process of controlling the variable resistor to adjust the resistance parameter.

5. The battery according to any one of claims 1 to 4, characterized in that, The battery also includes: The fourth switch is electrically connected to the first electrode of the first battery cell, the second end of the fourth switch is electrically connected to the power interface, and the third end of the fourth switch is electrically connected to the controller. The fifth switch has a first end electrically connected to the second electrode of the second battery cell, a second end electrically connected to the power interface, and a third end electrically connected to the controller. The controller is further configured to disconnect at least one of the fourth and fifth switches during the process of controlling the variable resistor to adjust the resistance parameter.

6. An electronic device, characterized in that, Includes the battery as described in any one of claims 1 to 5.

7. A method for determining the health status of a battery, characterized in that, Applied to the electronic device of claim 6, the method includes: Based on the electrical signal of the target cell of the battery in the electronic device, the health status information of the target cell is determined, wherein the target cell is the first cell or the second cell of the battery; Specifically, upon determining the health status information of the target battery cell, the battery controller controls the battery switching assembly to open the path between the second terminal of the first battery cell and the power interface of the battery, or the path between the first terminal of the first battery cell and the first terminal of the second battery cell, so that the charge of the first battery cell and the charge of the second battery cell are different; the battery controller also controls the variable resistor of the battery to adjust the resistance parameter of the variable resistor, and controls the switching assembly to open the path between the first terminal of the first battery cell and the first terminal of the second battery cell, and the path between the second terminal of the first battery cell and the second terminal of the second battery cell.

8. The method according to claim 7, characterized in that, The method of adjusting the resistance parameter of the variable resistor controlling the battery includes: The variable resistor is controlled to adjust the resistance parameter according to a preset change pattern; The preset change rules include: During each of at least two preset time periods, the value of the resistance parameter changes back and forth once between the first parameter value and the second parameter value; The duration of each preset time is different.

9. The method according to claim 8, characterized in that, Determining the health status information of the target battery cell based on the electrical signal of the target battery cell in the electronic device includes: When the resistance parameter value changes once, the impedance of the target battery cell is determined based on the electrical signal of the target battery cell, resulting in at least two impedances. The impedance spectrum of the target cell is determined based on the at least two impedances. Based on the impedance spectrum, the health status information of the target cell is determined.

10. The method according to claim 9, characterized in that, The electrical signal includes voltage signal and current signal; Determining the impedance of the target battery cell based on its electrical signal includes: Based on the voltage signal of the target battery cell, a first amplitude change parameter is determined, and based on the current signal of the target battery cell, a second amplitude change parameter is determined. The first amplitude change parameter is the amplitude change parameter of the voltage signal of the target battery cell within a preset time corresponding to one cycle of the resistance parameter value. The second amplitude change parameter is the amplitude change parameter of the current signal of the target battery cell within a preset time corresponding to one cycle of the resistance parameter value. The ratio of the first amplitude change parameter to the second amplitude change parameter is determined as the impedance of the target battery cell.

11. A device for determining the health status of a battery, characterized in that, Applied to the electronic device of claim 6, the battery health determination device comprises: The determining module is used to determine the health status information of the target cell based on the electrical signal of the target cell of the battery of the electronic device, wherein the target cell is the first cell or the second cell of the battery; Specifically, when the health status information of the target battery cell is determined, the battery controller controls the battery switching assembly to open the path between the second terminal of the first battery cell and the power interface of the battery, or controls the switching assembly to open the path between the first terminal of the first battery cell and the first terminal of the second battery cell, so that the charge of the first battery cell and the charge of the second battery cell are different; and controls the variable resistor of the battery to adjust the resistance parameter of the variable resistor, and controls the switching assembly to open the path between the first terminal of the first battery cell and the first terminal of the second battery cell, as well as the path between the second terminal of the first battery cell and the second terminal of the second battery cell.

12. The apparatus according to claim 11, characterized in that, The method of adjusting the resistance parameter of the variable resistor controlling the battery includes: The variable resistor is controlled to adjust the resistance parameter according to a preset change pattern; The preset change rules include: During each of at least two preset time periods, the value of the resistance parameter changes back and forth once between the first parameter value and the second parameter value; The duration of each preset time is different.

13. The apparatus according to claim 12, characterized in that, The determining module is specifically used to determine the impedance of the target battery cell based on the electrical signal of the target battery cell when the parameter value of the resistance parameter changes once, thereby obtaining at least two impedances; and to determine the impedance spectrum of the target battery cell based on the at least two impedances; and to determine the health status information of the target battery cell based on the impedance spectrum.

14. An electronic device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 7 to 10.

15. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as described in any one of claims 7 to 10.

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