An equalization control circuit, method, battery, and electronic device

Abstract

The application discloses a kind of equalization control circuits, comprising: multiple equalization modules, power supply, multiple battery elements and multiple switching elements;Wherein, the number of multiple equalization modules is less than the number of multiple battery elements;Multiple battery elements are connected with multiple equalization modules by multiple switching elements;Wherein, multiple switching elements are used to connect between multiple battery elements and multiple equalization modules to form a loop, and the energy obtained by multiple battery elements from power supply is balanced by multiple equalization modules, wherein each equalization module is used to balance at least part of battery elements in multiple battery elements, and the number of at least part of battery elements is multiple.The application also discloses a kind of equalization control method, battery and electronic equipment.

Description

Technical Field

[0001] This application relates to the field of battery energy storage technology, and more specifically, to an equalization control circuit, an equalization control method, a battery, and an electronic device. Background Technology

[0002] Currently, using transformers to balance the charge levels of batteries within a battery system is the most common method in energy storage systems. The advantages of this method are that, since energy does not flow between batteries, it reduces the impact of circulating currents on battery life; furthermore, by directly interacting with the grid or charger through the transformer, it reduces the number of times the battery is charged and discharged, thereby improving battery performance.

[0003] However, when using transformers for balancing in high-voltage scenarios, the number of voltage balancing modules is greater than or equal to the number of battery strings, which results in energy storage components being particularly large and extremely expensive. Summary of the Invention

[0004] This application provides an equalization control circuit, an equalization control method, a battery, and an electronic device, which can reduce the size of the energy storage components themselves and save costs.

[0005] The technical solution of this application is implemented as follows:

[0006] An equalization control circuit includes multiple equalization modules, a power supply, multiple battery elements, and multiple switching elements; wherein the number of multiple equalization modules is less than the number of multiple battery elements.

[0007] Multiple battery components are connected to multiple equalization modules via multiple switching elements;

[0008] The system includes multiple switching elements for connecting multiple battery elements and multiple equalization modules to form a circuit. The multiple equalization modules balance the energy obtained by the multiple battery elements from the power source. Each equalization module is used to balance at least some of the multiple battery elements, and the number of at least some battery elements is multiple.

[0009] An equilibrium control method, comprising:

[0010] When the energy difference between multiple battery elements is greater than a first energy difference threshold, multiple switching elements are controlled to connect the multiple battery elements and multiple equalization modules to form a loop. The energy obtained by the multiple battery elements from the power source is equalized by the multiple equalization modules. Each equalization module is used to equalize at least some of the multiple battery elements, and the number of at least some battery elements is multiple.

[0011] A battery that integrates the aforementioned equalization circuit.

[0012] An electronic device includes: a battery pack, a processor, and a communication bus;

[0013] The communication bus is used to establish a communication connection between the processor and the battery pack.

[0014] The battery pack integrates the aforementioned equalization control circuit;

[0015] The processor controls multiple switching elements to connect multiple battery elements and multiple equalization modules to form a circuit. The processor equalizes the energy obtained by the multiple battery elements from the power source through multiple equalization modules. Each equalization module is used to equalize at least some of the multiple battery elements. The number of at least some battery elements is multiple.

[0016] This application provides an equalization control circuit, an equalization control method, a battery, and an electronic device. The equalization control circuit includes: multiple equalization modules, a power supply, multiple battery elements, and multiple switching elements. The number of equalization modules is less than the number of battery elements. The multiple battery elements are connected to the multiple equalization modules through the multiple switching elements. The multiple switching elements are used to establish circuits between the multiple battery elements and the multiple equalization modules, thereby equalizing the energy obtained by the multiple battery elements from the power supply. Each equalization module is used to equalize at least a portion of the multiple battery elements, and the number of at least a portion of the battery elements is multiple. In other words, the equalization modules can be reused among the battery elements, effectively reducing the number of equalization modules and at least solving the problem of large equalization system size, providing a smaller equalization circuit and saving costs. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of an equalization control circuit provided for an embodiment of this application;

[0018] Figure 2 A schematic diagram of the structure of a first-layer balanced branch provided for embodiments of this application. Figure 1 ;

[0019] Figure 3 A schematic diagram of an equalization module in a first-layer equalization branch provided for an embodiment of this application;

[0020] Figure 4 A schematic diagram of the structure of a first-layer balanced branch provided for embodiments of this application. Figure 2 ;

[0021] Figure 5 A schematic diagram of the structure of a first-layer balanced branch provided for embodiments of this application. Figure 3 ;

[0022] Figure 6 A schematic diagram of a two-layer balanced branch provided for embodiments of this application. Figure 1 ;

[0023] Figure 7 A schematic diagram of a two-layer balanced branch provided for embodiments of this application. Figure 2 ;

[0024] Figure 8 A schematic diagram of a two-layer balanced branch provided for embodiments of this application. Figure 3 ;

[0025] Figure 9 A schematic diagram of an equalization control method provided for an embodiment of this application;

[0026] Figure 10 This is a schematic diagram of the structure of an electronic device provided as an embodiment of this application. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0029] In the following description, the terms "first, second, third" are used merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first, second, third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in a sequence other than that illustrated or described herein.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0031] This application provides an equalization control circuit, which includes: multiple equalization modules, a power supply, multiple battery elements, and multiple switching elements; wherein the number of equalization modules is less than the number of battery elements; the multiple battery elements are connected to the multiple equalization modules through the multiple switching elements; wherein the multiple switching elements are used to conduct the connection between the multiple battery elements and the multiple equalization modules to form a loop, and the multiple equalization modules equalize the energy obtained by the multiple battery elements from the power supply, wherein each equalization module is used to equalize at least a portion of the multiple battery elements, and the number of at least a portion of the battery elements is multiple.

[0032] For ease of understanding, let's take an example with M equalization modules, N battery components, and S switching components. Figure 1 As shown, the equalization circuit includes M equalization modules 101, a power supply 102, N battery components 103, and S switching components 104; where M, N, and S are all positive integers, and M is less than N;

[0033] N battery components 103 are connected to M equalization modules 101 through S switching components 104;

[0034] Among them, S switching elements 104 are used to connect N battery elements 103 and M equalization modules 101 to form a circuit, and the energy obtained by N battery elements 103 from the power source is equalized by the M equalization modules 101. Each equalization module is used to equalize at least some of the battery elements among the N battery elements, and the number of at least some battery elements is multiple.

[0035] In this embodiment, the equalization module includes, but is not limited to, the following devices and / or circuits: inductive transformer, coupling transformer, resonant circuit composed of capacitor and inductor. Here, this embodiment does not make specific limitations.

[0036] In this embodiment, the power supply can be a switching power supply, a PCS (Power Conversion System, energy storage converter), or other circuits or devices capable of providing power resources. Here, this embodiment does not make specific limitations.

[0037] In this embodiment, a battery element refers to a cup, tank, or other container or composite container containing an electrolyte solution and metal electrodes to generate current, and is a device that converts chemical energy into electrical energy. Types of battery elements include, but are not limited to, lithium batteries and lead-acid batteries. A battery element can be a battery cluster composed of several battery boxes connected in series, or a battery system composed of several battery clusters connected in parallel. This embodiment does not specifically limit the specific battery element.

[0038] In this embodiment, the switching element can be a single-control switch, a double-control switch, a multi-control switch, or a switching module formed by two unidirectional field-effect transistors (MOSFETs) connected in reverse parallel. Here, this embodiment does not make specific limitations.

[0039] The equalization control circuit described above can perform the following process: When there is a voltage difference between battery components, the component with the highest voltage is identified as the high-voltage battery component, and the component with the lowest voltage is identified as the low-voltage battery component. Then, the switch module corresponding to the high-voltage battery component is turned on, allowing the high-voltage battery component to store energy in the equalization module. Next, the switch module corresponding to the low-voltage battery component is turned on, allowing the equalization module to transfer energy to the low-voltage battery component. This achieves voltage equalization between the high- and low-voltage battery components, preventing power differences between individual battery cells, extending battery life, and improving battery safety.

[0040] In this embodiment, the equalization control circuit includes at least one equalization branch. For ease of explanation, when the equalization control circuit includes one equalization branch, this equalization branch is referred to as the first equalization branch. The structure of the first equalization branch is further described below, and the structure of the first equalization branch includes at least the following three types:

[0041] In some embodiments, combined with Figure 2 As shown,

[0042] Each battery element is associated with a first switching element S l They are connected in series to form the first series module;

[0043] The first end of the first series module is connected to the positive terminal of the power supply through an equalization module, and the second end of the first series module is connected to the negative terminal of the power supply.

[0044] The positive terminal of each battery element is connected to the positive terminal of the power supply via a second switching element S2, and the negative terminal of each battery element is connected to the negative terminal of the power supply.

[0045] Each first series module is connected in series with an equalization module, and multiple first series modules are connected in parallel to form a first-level equalization branch; there is a one-to-many configuration relationship between an equalization module and a battery element in the first-level equalization branch.

[0046] In this way, the equalization control circuit forms a loop by connecting N battery elements with one equalization module through S switching elements. The equalization module balances the energy obtained by the N battery elements from the power source, realizing the reuse of one equalization module by N battery elements. This effectively reduces the number of equalization modules, solves the problem of the large size of the equalization system, and provides a smaller equalization circuit, saving costs.

[0047] For example, Figure 2 The balancing module in the system can be an inductive transformer, such as... Figure 3 As shown, the equalization module is represented by L1.

[0048] by Figure 3 The equalization process of the equalization control circuit in this application is illustrated using an example. Assume that the voltage of battery element 1 is the highest among all battery elements, and the voltage of battery element 2 is the lowest. The equalization process consists of two steps: battery element 1 discharges; and within one pulse width modulation (PWM) cycle, the switch S corresponding to battery element 1 is first turned on. l Current flows through the loop formed by the switching element S1 corresponding to battery element 1, the inductive transformer L1, and battery element 1; thus, the energy of battery element 1 is reduced, while energy is stored in the inductive transformer L1, causing the inductor current to increase. Further, battery element 2 is charged; within the same PWM cycle, the switching element S1 corresponding to battery element 1 is turned off. l The switching element S corresponding to the conducting battery element 2 is turned on. l The current flows through battery element 2, the corresponding switching element S1, and finally back to inductive transformer L1. In this way, the energy is released from the inductive transformer L1, while simultaneously charging battery element 2.

[0049] In some embodiments, combined with Figure 4 As shown,

[0050] Each battery element is associated with a first switching element S l They are connected in series to form the first series module;

[0051] The first end of the first series module is connected to the positive terminal of the power supply through an equalization module, and the second end of the first series module is connected to the negative terminal of the power supply.

[0052] The positive terminal of each battery element is connected to the positive terminal of the power supply via a second switching element S2, and the negative terminal of each battery element is connected to the negative terminal of the power supply.

[0053] Each first series module in the i-th part of the series modules included in all the first series modules is connected in series with the corresponding i-th equalization module, and multiple first series modules in the i-th part of the series modules are connected in parallel to form the i-th equalization branch, where i is a positive integer greater than or equal to 1 and less than or equal to 1, and 1 is a positive integer greater than or equal to 2; where 1 is the total number of all equalization branches.

[0054] Multiple equalization branches are connected in parallel to form the first layer of equalization branches; the equalization module in each equalization branch in the first layer of equalization branches has a one-to-many configuration relationship with the battery element.

[0055] For example, in combination Figure 4 It is known that the equalization branches from the first equalization branch to the i-th equalization branch are connected in parallel to form the first layer of equalization branches. Each equalization branch has a one-to-many relationship between its corresponding equalization module and the battery element in that branch. Here, the number of battery elements in each equalization branch can be the same or different. In practical applications, the number of battery elements in each equalization branch can be flexibly set according to requirements. For example, the setting methods include at least one or a combination of the following: one equalization branch in the equalization control circuit includes 2 battery elements and one equalization module; one equalization branch in the equalization control circuit includes 4 battery elements and one equalization module; one equalization branch in the equalization control circuit includes 8 battery elements and one equalization module; this application does not specifically limit this.

[0056] In some embodiments, combined with Figure 5 As shown,

[0057] Each battery element is associated with a first switching element S l They are connected in series to form the first series module;

[0058] Each battery element is connected in series with a third switching element S3 to form a second series module;

[0059] The first end of the first series module is connected to the positive terminal of the power supply through each of the multiple equalization modules, and the second end of the first series module is connected to the negative terminal of the power supply.

[0060] The first end of the second series module is connected to the positive terminal of the power supply through each of the multiple equalization modules, and the second end of the second series module is connected to the negative terminal of the power supply.

[0061] The positive terminal of each battery element is connected to the positive terminal of the power supply via a second switching element S2, and the negative terminal of each battery element is connected to the negative terminal of the power supply.

[0062] Each first series module is connected in series with each equalization module, and multiple first series modules are connected in parallel. Each second series module is connected in series with each equalization module, and multiple second series modules are connected in parallel, forming a first-layer equalization branch. Each equalization module in the first-layer equalization branch has a one-to-many configuration relationship with the battery element.

[0063] For example, in combination Figure 5 It is understood that each equalization module in the first-layer equalization branch has a one-to-many relationship with each battery element. The number of battery elements corresponding to each equalization module is the same, which is all the battery elements included in the equalization control circuit. In practical applications, the number of equalization modules in the equalization control circuit can be flexibly set according to requirements. For example, the setting methods include one of the following: all battery elements in the equalization control circuit reuse two equalization modules, that is, each of the two equalization modules can perform equalization control on all battery elements; or all battery elements in the equalization control circuit reuse three equalization modules, that is, each of the three equalization modules can perform equalization control on all battery elements; this application does not specifically limit this.

[0064] In other embodiments of this application, the equalization control circuit may also include multi-layer equalization branches, with higher-layer equalization branches used to perform equalization control on lower-layer equalization branches. For example, the equalization control circuit may also include a second-layer equalization branch, which is used to perform equalization control on multiple first-layer equalization branches. Here, the number of layers of the multi-layer equalization branches is not specifically limited in the embodiments of this application.

[0065] In this embodiment, the equalization module in the second-layer equalization branch has a one-to-many configuration relationship with the first-layer equalization branch.

[0066] It should be noted that the first-layer equalization branch can constitute an independent equalization control circuit, which is the smallest unit of equalization control circuit in this application. Furthermore, in addition to the second-layer equalization branch, there can be more layers of equalization branches; however, this application does not specifically limit the number of equalization branches described herein.

[0067] For example, taking an equalization control circuit comprising two layers of equalization branches as an example, in one implementable two-layer structure, see [link to relevant documentation]. Figure 6 As shown,

[0068] Each first-level equalization branch is connected in series with a switching element S4 to form a series module;

[0069] The first end of the aforementioned series module is connected to the positive terminal of the power supply through an equalization module, and the second end of the aforementioned series module is connected to the negative terminal of the power supply.

[0070] One end of each first-level balancing branch is connected to the positive terminal of the power supply via a switching element S5, and the other end of each first-level balancing branch is connected to the negative terminal of the power supply.

[0071] Each of the aforementioned series modules is connected in series with an equalization module, and multiple of the aforementioned series modules are connected in parallel; the equalization module in each first-layer equalization branch has a one-to-many configuration relationship with the battery element, and the equalization module in the second-layer equalization branch has a one-to-many configuration relationship with the first-layer equalization branch.

[0072] For example, taking an equalization control circuit comprising two layers of equalization branches as an example, in one implementable two-layer structure, see [link to relevant documentation]. Figure 7 As shown,

[0073] Each first-level equalization branch is connected in series with a switching element S4 to form a series module;

[0074] The first end of the aforementioned series module is connected to the positive terminal of the power supply through an equalization module, and the second end of the aforementioned series module is connected to the negative terminal of the power supply.

[0075] One end of each first-level balancing branch is connected to the positive terminal of the power supply via a switching element S5, and the other end of each first-level balancing branch is connected to the negative terminal of the power supply.

[0076] Each first serial module in the i-th part of the serial modules included in the above-mentioned serial modules is connected in series with the corresponding i-th equalization module, and multiple serial modules in the i-th part of the serial modules are connected in parallel to form the i-th equalization branch, where i is a positive integer greater than or equal to 1 and less than or equal to 1, and 1 is a positive integer greater than or equal to 2.

[0077] Multiple two-layer equalization branches are connected in parallel; the equalization module in each first-layer equalization branch has a one-to-many configuration relationship with the battery element, and the equalization module in the second-layer equalization branch has a one-to-many configuration relationship with the first-layer equalization branch.

[0078] For example, taking an equalization control circuit comprising two layers of equalization branches as an example, in one implementable two-layer structure, see [link to relevant documentation]. Figure 8 As shown,

[0079] Each first-level equalization branch is connected in series with a switching element S4 to form a series module;

[0080] Each first-level equalization branch is connected in series with a switching element S6 to form another series module;

[0081] The first end of the aforementioned series module is connected to the positive terminal of the power supply through each of the multiple equalization modules, and the second end of the aforementioned series module is connected to the negative terminal of the power supply.

[0082] The first end of the other series module is connected to the positive terminal of the power supply through each of the multiple equalization modules, and the second end of the other series module is connected to the negative terminal of the power supply.

[0083] One end of each first-level balancing branch is connected to the positive terminal of the power supply via a switching element S5, and the other end of each first-level balancing branch is connected to the negative terminal of the power supply.

[0084] Each of the aforementioned series modules is connected in series with each equalization module, and multiple of the aforementioned series modules are connected in parallel. Each of the aforementioned other series modules is connected in series with each equalization module, and multiple of the aforementioned other series modules are connected in parallel, forming two layers of equalization branches. In each first layer of equalization branch, the equalization module and the battery element have a one-to-many configuration relationship, and in the second layer of equalization branch, the equalization module and the first layer of equalization branch have a one-to-many configuration relationship.

[0085] It should be noted that the first layer of balanced branches in the above two layers can be... Figure 2 The structure in Figure 4 The structure in Figure 5 One or a combination of structures in it.

[0086] For example, taking an equalization control circuit that includes an equalization module as an example, the equalization control circuit provided in this application embodiment may also have the following equalization methods:

[0087] If there is more than one battery element with a relatively high voltage, and battery element 3 has the lowest voltage among all the battery elements, taking battery elements 1 and 2 as examples where their voltages rank first and second, the balancing process consists of two steps: Battery elements 1 and 2 discharge; In one PWM cycle, the first switching elements corresponding to battery elements 1 and 2 are turned on, reducing their energy and simultaneously storing energy for the inductive transformer, causing the inductor current to rise. Further, battery element 3 is charged; In the same PWM cycle, the first switching elements corresponding to battery elements 1 and 2 are turned off, and the first switching element corresponding to battery element 3 is turned on, forming a loop to release energy from the inductive transformers corresponding to battery elements 1 and 2, while simultaneously charging battery element 3.

[0088] If battery element 1 has the highest voltage among multiple battery elements, and there is more than one battery element with a lower voltage, taking battery elements n-1 and n as examples where the voltages of the two battery elements are the lowest, the balancing process consists of two steps: Battery element 1 discharges; in one PWM cycle, the switching element corresponding to battery element 1 is first turned on to reduce the energy of battery element 1, while simultaneously storing energy for the inductive transformer, causing the inductor current to rise. Further, battery elements n-1 and n are charged; in the same PWM cycle, the first switching element corresponding to battery element 1 is turned off, and the first switching elements corresponding to battery elements n-1 and n are turned on, forming a loop to complete the energy release of the inductive transformer corresponding to battery element 1, while simultaneously charging battery element 1.

[0089] When there is more than one battery element with a higher voltage and more than one battery element with a lower voltage, the equalization process is similar to the equalization process described above, and will not be repeated here.

[0090] The embodiments of this application provide an equalization control method, applied to the equalization control circuit described in the above embodiments, with reference to... Figure 9 As shown, the method includes the following steps:

[0091] Step 1001: When the energy difference between N battery elements is greater than the first energy difference threshold, control S switching elements to connect the N battery elements and M equalization modules to form a loop.

[0092] Step 1002: Equalize the energy obtained from the power source by the N battery components through M equalization modules.

[0093] Each equalization module is used to equalize at least some of the N battery elements, and the number of at least some battery elements is multiple.

[0094] In this embodiment of the application, the first energy difference threshold can be a numerical value, such as 0.1%, 3%, or 5% of the full voltage range of the power supply; or it can be a range, such as 0.1% to 5% of the full voltage range of the power supply.

[0095] Understandably, the first energy difference threshold can be set according to different system voltage levels and requirements. For example, for a system with a power supply voltage of 400V, the first energy difference threshold can be between 20V and 1V; for systems with higher requirements, the first energy difference threshold can be set to 1V to 3V; and for systems with lower requirements, the first energy difference threshold can be set to 4V to 20V.

[0096] In one optional embodiment of this application, before step 1001, the method further includes: determining the current state of the N battery elements; when the N battery elements are in a charging state, obtaining the current energy of each battery element; and calculating the energy difference between the N battery elements.

[0097] In one optional embodiment of this application, step 1002 may include: calculating the ratio of the remaining capacity of each battery element to its capacity in a fully charged state; identifying the battery element with the lowest ratio as the battery element to be balanced; and charging the battery element to be balanced using M balancing modules.

[0098] This application provides an equalization control circuit, equalization control method, battery, and electronic device. The method, applied to a gateway, includes: when the energy difference between N battery elements exceeds a first energy difference threshold, controlling S switching elements to connect the N battery elements to M equalization modules, forming a loop; and using the M equalization modules to equalize the energy obtained by the N battery elements from the power source. By monitoring the energy of the N battery elements and obtaining the energy difference between them, when the energy difference exceeds the first energy difference threshold, appropriate battery elements can be activated to equalize the corresponding batteries, avoiding power differences between individual battery cells, extending battery life, and improving battery safety.

[0099] The following examples illustrate the equalization control method in the above embodiments.

[0100] It should be noted that the descriptions of the same steps and contents as in other embodiments in this embodiment can be found in the descriptions in other embodiments, and will not be repeated here.

[0101] This application provides a battery that integrates the above-described equalization circuit.

[0102] Embodiments of this application provide an electronic device that can be applied to... Figure 10 The method provided in the corresponding embodiment is referred to Figure 10 As shown, the electronic device 12 includes: a battery pack 1201, a processor 1202, and a communication bus 1203;

[0103] The communication bus 1203 is used to realize the communication connection between the processor 1202 and the battery pack 1201;

[0104] The battery pack 1201 integrates the aforementioned equalization control circuit.

[0105] The processor 1202 is used to control multiple switching elements to connect multiple battery elements and multiple equalization modules to form a circuit. The processor 1202 is used to equalize the energy obtained by multiple battery elements from the power source through multiple equalization modules. Each equalization module is used to equalize at least some of the battery elements, and the number of at least some battery elements is multiple.

[0106] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. The aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor may be a microprocessor or any conventional processor.

[0107] It should be understood that the terms "an embodiment," "an embodiment," "an embodiment of this application," "the foregoing embodiment," "some embodiments," or "some implementations" mentioned throughout the specification mean that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, the phrases "an embodiment," "an embodiment," "an embodiment of this application," "the foregoing embodiment," "some embodiments," or "some implementations" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above embodiments of this application are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0108] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0109] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0110] In addition, each functional unit in the various embodiments of this application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0111] The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0112] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0113] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0114] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0115] Alternatively, if the integrated units described above are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, or the parts that contribute to related technologies, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0116] It is worth noting that the accompanying drawings in this application are only for illustrating the schematic positions of various devices on the terminal device and do not represent their actual positions in the terminal device. The actual positions of each device or area may be changed or shifted according to the actual situation (e.g., the structure of the terminal device). Furthermore, the proportions of different parts in the terminal device in the drawings do not represent the actual proportions.

[0117] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An equalization control circuit, characterized by, The equalization control circuit comprises a plurality of equalization modules, a power supply, a plurality of battery elements and a plurality of switch elements; wherein the number of the plurality of equalization modules is less than the number of the plurality of battery elements; The plurality of battery elements are connected with the plurality of equalization modules through the plurality of switch elements; The plurality of switch elements are used to turn on the connection between the plurality of battery elements and the plurality of equalization modules to form a loop, and the plurality of equalization modules are used to equalize the energy obtained by the plurality of battery elements from the power supply, wherein each equalization module is used to equalize at least part of the plurality of battery elements, and the number of the at least part of the plurality of battery elements is a plurality. Each battery element is connected with a first switch element in series to form a first series module. Each battery element is connected with a third switch element in series to form a second series module. The first end of the first series module is connected to the positive pole of the power supply through each equalization module of the plurality of equalization modules, and the second end of the first series module is connected to the negative pole of the power supply. The first end of the second series module is connected to the positive pole of the power supply through each equalization module of the plurality of equalization modules, and the second end of the second series module is connected to the negative pole of the power supply. The positive pole of each battery element is connected to the positive pole of the power supply through a second switch element, and the negative pole of each battery element is connected to the negative pole of the power supply. Each first series module is connected with each equalization module in series, and a plurality of first series modules are connected in parallel; each second series module is connected with each equalization module in series, and a plurality of second series modules are connected in parallel to form a first layer equalization branch; each equalization module in the first layer equalization branch has a one-to-many setting relationship with the battery elements.

2. The equalization control circuit of claim 1, wherein, The equalization control circuit further comprises a second layer equalization branch, and the second layer equalization branch is used to equalize a plurality of first layer equalization branches.

3. The equalization control circuit of claim 2, wherein, The equalization modules in the second layer equalization branch have a one-to-many setting relationship with the first layer equalization branches.

4. The equalization control circuit of claim 1, wherein, The equalization module is an inductive transformer; wherein the inductive transformer is composed of a primary winding, a secondary winding and a magnetic core.

5. An equalization control method characterized by, The method is applied to the equalization control circuit in any one of claims 1 to 4, and the method comprises: When the energy difference between the plurality of battery elements is greater than a first energy difference threshold, the plurality of switch elements are controlled to turn on the connection between the plurality of battery elements and the plurality of equalization modules to form a loop, and the plurality of equalization modules are used to equalize the energy obtained by the plurality of battery elements from the power supply, wherein each equalization module is used to equalize at least part of the plurality of battery elements, and the number of the at least part of the plurality of battery elements is a plurality.

6. A battery, characterized by The electronic device is integrated with the equalization control circuit in any one of claims 1 to 4.

7. An electronic device, comprising: The electronic device comprises a battery pack, a processor and a communication bus; The communication bus is used to realize the communication connection between the processor and the battery pack; The battery pack is integrated with the equalization control circuit in any one of claims 1 to 4. The processor is configured to control a plurality of switching elements to turn on connections between the plurality of battery elements and the plurality of equalization modules to form a loop, and equalize energy obtained by the plurality of battery elements from the power supply through the plurality of equalization modules, wherein each equalization module is configured to equalize at least part of the plurality of battery elements, and the number of the at least part of the plurality of battery elements is a plurality.

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