CN115173519A - Balance control circuit and method, battery and electronic equipment - Google Patents

Abstract

The present application discloses an equalization control circuit, comprising: M equalization modules, a power supply, N battery elements and N switching elements; wherein M and N are both positive integers; the N battery elements are connected to M through the N switching elements The number of equalization modules is connected; wherein, the N switching elements are used to conduct the connection between the N battery elements and the M equalization modules to form a loop, and the M equalization modules are used to equalize the energy obtained by the N battery elements from the power supply. The present application also discloses an equalization control method, a battery and an electronic device.

Description

A kind of equalization control circuit, method, battery and electronic device

technical field

The present application relates to the technical field of battery energy storage, and in particular, to an equalization control circuit, an equalization control method, a battery and an electronic device.

Background technique

At present, in the energy storage system, the use of transformers to achieve the balance of battery power in the battery system is the most commonly used method. The advantage of this method is that since energy does not flow between batteries, the impact of circulating current on battery life can be reduced; and the transformer directly interacts with the grid or charger, thereby reducing the number of battery energy charging and output, thereby improving battery performance.

However, using transformers for equalization in high-voltage scenarios will result in particularly large and expensive energy storage components.

SUMMARY OF THE INVENTION

The present application provides a balance control circuit, a balance control method, a battery and an electronic device, which can reduce the volume of the energy storage component itself and save the cost.

The technical solution of the present application is realized as follows:

An equalization control circuit, comprising M equalization modules, a power supply, N battery elements and N switching elements; wherein M and N are both positive integers;

The N battery elements are connected to the M equalization modules through the N switching elements;

Wherein, the N switching elements are used to turn on the connections between the N battery elements and the M balancing modules to form a loop, and the N battery elements are connected to the N battery elements from the M balancing modules through the M balancing modules to form a loop. The energy obtained by the power supply is equalized.

An equalization control method, comprising:

When the energy difference between the N battery elements is greater than the first energy difference threshold, the connection between the N battery elements and the M balancing modules is turned on to form a loop; The energy obtained by the battery element from the power source is balanced; wherein, the M and N are both positive integers.

A battery is integrated with the above-mentioned equalizing circuit.

An electronic device, comprising: 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 above-mentioned balance control circuit;

The processor is configured to control the N switching elements, turn on the connections between the N battery elements and the M balancing modules to form a loop, and use the M balancing modules to connect the N battery elements from the N battery elements to the N battery elements. The energy obtained by the power supply is balanced; wherein, the M and N are both positive integers.

The present application provides an equalization control circuit, an equalization control method, a battery and an electronic device. The equalization control circuit includes: M equalization modules, a power supply, N battery elements and N switching elements; wherein M and N are both positive Integer; N battery elements are connected to M balancing modules through N switching elements; among them, N switching elements are used to conduct the connection between N battery elements and M balancing modules to form a loop, and pass through M balancing modules The energy obtained by the N battery elements from the power source is equalized. That is to say, the present application provides an equalization circuit with a smaller volume, which saves costs, and the number of battery elements and equalization modules can be set according to actual scenarios, adapt to different scenarios, and have a wide range of applications.

Description of drawings

FIG. 1 is a schematic structural diagram of an equalization control circuit provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram 1 of a first-layer equalization branch provided by an embodiment of the present application;

FIG. 3 is a second schematic structural diagram of a first-layer equalization branch provided by an embodiment of the present application;

FIG. 4 is a circuit diagram 1 of a second-layer equalization branch provided by an embodiment of the present application;

FIG. 5 is a circuit diagram 2 of a layer 2 equalization branch provided by an embodiment of the present application;

FIG. 6 is a circuit diagram 1 of a first-layer equalization branch provided by an embodiment of the present application;

FIG. 7 is a second circuit diagram of a first-layer equalization branch provided by an embodiment of the present application;

FIG. 8 is a circuit diagram 1 of a layer 2 equalization branch provided by an embodiment of the present application;

FIG. 9 is a circuit diagram 2 of a layer 2 equalization branch provided by an embodiment of the present application;

10 is a schematic diagram of an equalization control method provided by an embodiment of the present application;

FIG. 11 is an example of an equalization control method provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained under the premise of creative work fall within the scope of protection of the present application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" can be the same or a different subset of all possible embodiments, and Can be combined with each other without conflict.

In the following description, the term "first\second\third" is only used to distinguish similar objects, and does not represent a specific ordering of objects. It is understood that "first\second\third" Where permitted, the specific order or sequence may be interchanged so that the embodiments of the application described herein can be implemented in sequences other than those illustrated or described herein.

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

FIG. 1 is a schematic structural diagram of an equalization control circuit provided by an embodiment of the present application. Referring to FIG. 1 , the equalization circuit includes M equalization modules 101 , a power supply 102 , N battery elements 103 and N switching elements 104 ;

Among them, M and N are positive integers;

N battery elements 103 are connected 101 to M equalization modules through N switching elements 104;

Among them, the N switching elements 104 are used to turn on the connections between the N battery elements 103 and the M balancing modules 101 to form a loop, and the M balancing modules 101 are used to balance the energy obtained by the N battery elements 103 from the power source 102 . .

In some embodiments, the equalization module and the battery element may have a one-to-one setting relationship, that is, M=N; in other embodiments, the equalization module and the battery element may also have a one-to-many setting relationship, that is, M< N.

In the embodiment of the present application, the equalization module 101 includes, but is not limited to, a resonant circuit composed of the following devices or circuits, an inductive transformer, a coupling transformer, a capacitor and an inductor, which are not specifically limited in the embodiment of the present application.

In the embodiments of the present application, the power supply may be a switching power supply, a PCS (Power Conversion System, energy storage converter), or other circuits or devices capable of providing power resources, which are not specifically limited in the embodiments of the present application. .

In the embodiments of this application, the battery element refers to a part of the space of a cup, tank or other container or composite container that contains an electrolyte solution and metal electrodes to generate current, and a device that can convert chemical energy into electrical energy; the types of battery elements include But not limited to lithium batteries and lead batteries. The battery element may be a battery cluster composed of several battery boxes in series, or a battery system composed of several battery clusters in parallel, which is not specifically limited in the embodiment of the present application.

In the embodiment of the present application, the switching element may be a single-control switch, a double-control switch, a multi-control switch, etc., or may be a switch of two unidirectional field effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET). A switch module formed by connecting in parallel is not specifically limited in this embodiment of the present application.

In the above balance control circuit, the balance control process may be: when there is a voltage difference between battery elements, the highest voltage among the plurality of battery elements is determined as the high-voltage battery element, and the lowest voltage among the plurality of battery elements is determined. It is determined to be a low-voltage battery element; after that, the switch module corresponding to the high-voltage battery element is turned on, and the high-voltage battery element stores the electric energy to the balance module; then, the switch module corresponding to the low-voltage battery element is turned on, and the balance module stores the power Transfer to low-voltage battery components; in this way, the voltage balance between high-voltage and low-voltage battery components is completed, the power supply difference between battery cells is avoided, the battery life is prolonged, and the safety of battery use is improved.

Example 1, there is a one-to-many setting relationship between the first equalization module and the battery element in the equalization branch of the first layer. Exemplarily, FIG. 2 is a schematic structural diagram of a first-layer equalization branch provided by the present application. As shown in FIG. 2 , N is 3 and M is 1.

Each battery element is connected in series with a first switching element _S1 to form a first series module;

The first end of the first series module is connected to the positive pole of the power supply through the first end of the first equalization module, and the second end of the first series module is connected to the negative pole of the power supply; the second end of the first equalization module is connected to the negative pole of the power supply through a first _Two switching elements S2 are 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 _third switching element S3, and the negative pole of each battery element is connected to the negative pole of the power supply; The modules are connected in series, and a plurality of first series modules are connected in parallel to form a first-layer equalizing branch.

Example 2: There is a one-to-one relationship between the second equalization module and the battery element in the equalization branch of the first layer. Exemplarily, FIG. 3 is a schematic structural diagram of a first-layer equalization branch provided by the present application. As shown in FIG. 3 , N is 3 and M is 3.

Each battery element is connected in parallel with a _fourth switching element S4 to form a first parallel module; the first end of the first parallel module is connected to the positive pole of the power supply through the second equalization module corresponding to each battery element, and the first parallel module is connected in parallel. The second end of the module is connected to the negative pole of the power supply to form a first equalizing branch; the first equalizing branches where the plurality of second equalizing modules are located are connected in parallel to form a first-layer equalizing branch.

In other embodiments of the present application, the balancing modules and battery elements in the first-layer balancing branch may also have a many-to-many setting relationship, for example, N is 3 and M is 2, that is, two balancing modules are paired with three batteries components for equalization control.

In this embodiment of the present application, the equalization control circuit may include a one-layer equalization branch; the equalization control circuit may also include a multi-layer equalization branch, and the high-level equalization branch is used to perform equalization control on the bottom equalization branch. For example, the equalization control circuit may further A second-layer equalization branch is included, and the second-layer equalization branch is used to perform equalization control on a plurality of first-layer equalization branches. Here, the number of layers of the multi-layer equalization branch is not specifically limited in this embodiment of the present application.

It can be understood that the multiple first-layer equalization branches controlled by the second-layer equalization branch may be the structures shown in FIG. 2 or FIG. 3 . Similar equalization control methods can also be used between equalization branches. That is to say, the balancing modules and battery elements in the first-layer balancing branch can be in a one-to-many relationship, and the balancing modules and battery elements in the first-layer balancing branch can also be in a one-to-one relationship; The equalization module in the second-layer equalizing branch and the first-layer equalizing branch can be set in a one-to-many relationship, and the equalizing module in the second-layer equalizing branch and the first-layer equalizing branch can also be set in a one-to-one setting relationship; the present application can flexibly select the setting relationship between the equalization modules of different layers and the equalization control object according to actual requirements, and the embodiment of the present application does not make specific limitations here.

Example 1, there is a one-to-many setting relationship between the third equalization module in the second layer equalization branch and the first layer equalization branch. Exemplarily, FIG. 4 is a schematic structural diagram of a layer 2 equalization branch provided by the present application. As shown in FIG. 4 , the number of equalization branches in the first layer is three, and the number of third equalization modules is one.

Each first-layer equalizing branch is connected in series with a _fifth switching element S5 to form a second series module; the first end of the second series module is connected to the positive pole of the power supply through the first end of the third equalizing module, and the first end of the second series module is The second end of the two series modules is connected to the negative pole of the power supply; the second end of the third equalizing module is connected to the negative pole of the power supply through a _sixth switching element S6; the positive pole of each first-layer equalizing branch is connected through a seventh switching element S7 is connected to the positive pole of the power supply, and the negative pole of each first _- layer equalizing branch is connected to the negative pole of the power supply; each second series module is connected in series with the third equalizing module, and a plurality of second series modules are connected in parallel to form a second layer Balanced branch.

Example 2, there is a one-to-one setting relationship between the fourth equalization module in the equalization branch of the second layer and the equalization branch of the first layer. Exemplarily, FIG. 5 is a schematic structural diagram of a layer 2 equalization branch provided by the present application. As shown in FIG. 5 , the number of equalization branches in the first layer is three, and the number of fourth equalization modules is three.

Each first-layer equalizing branch is connected in parallel with an _eighth switching element S8 to form a second parallel module; the first end of the second parallel module is connected to the fourth equalizing module corresponding to each first-layer equalizing branch. The positive pole of the power supply, and the second end of the second parallel module is connected to the negative pole of the power supply to form a second equalizing branch; the second equalizing branches where the plurality of fourth equalizing modules are located are connected in parallel to form a second-layer equalizing branch.

In other embodiments of the present application, the equalization module in the second-layer equalizing branch and the first-layer equalizing branch may also have a many-to-many setting relationship. For example, the number of the first-layer equalizing branches is 3, and the The number of modules is 2, that is, two equalization modules perform equalization control on the three first-layer equalization branches.

It should be noted that the first-layer equalization branch may constitute an independent equalization control circuit, which is the smallest unit equalization control circuit in this application. Moreover, in addition to the second-layer equalization branch, there may also be more layers of equalization branches, which are not specifically limited in this embodiment of the present application.

Exemplarily, the first equalization module in FIG. 2 may be an inductive transformer. As shown in FIG. 6 , the first equalization module is represented by L ₁ .

Taking FIG. 6 as an example, the equalization process of the equalization control circuit of the present application is introduced. It is assumed that the voltage of the battery element _B1 is the highest _among the voltages of the plurality of battery elements, and the voltage of the battery element Bi is the lowest among the voltages of the plurality of battery elements. _The equalization process is divided into two steps: the battery element B1 is discharged; in a pulse width modulation (Pulse Width Modulation, PWM) cycle, the switches _S1 and _S2 corresponding to the battery element B1 are turned _on first, and the current flows through the battery element B _The loop formed by the corresponding switching element S ₁ , the inductive transformer L ₁ , the switching element S ₂ corresponding to the battery element B ₁ and the battery element B ₁ ; in this way, the energy of the battery element B ₁ is reduced, and the inductive transformer L is at the same time ₁ Energy storage, the inductor current rises. Further, the battery element B _i is charged; in the same PWM cycle, the switching element S ₁ corresponding to the battery element B ₁ is turned off, the first switching element corresponding to the battery element B _i is turned on, and the current flows through the switching elements S ₂ , The battery element B _i , the switching element S ₁ , and finally flow back to the inductive transformer L ₁ . In this way, the energy release _on the inductive transformer L1 is completed, and the battery _Bi is charged at the same time.

The equalization control circuit provided by the embodiment of the present application may also have the following equalization modes:

If there is less than one battery element with a high voltage of the plurality of battery elements, the voltage of the battery element B _i is the lowest among the voltages of the plurality of battery elements. Taking the battery elements B ₁ and B ₂ in the top two voltages as an example, the equalization process is divided into two steps: the battery elements B ₁ and B ₂ are discharged; The first switching elements corresponding to B ₁ and B ₂ are turned on to reduce the energy of the battery elements B ₁ and B ₂ , and meanwhile store energy for the inductive transformer L ₁ corresponding to the battery elements B ₁ and B ₂ , and the inductor current increases. Further, the battery element B _i is charged; in the same PWM cycle, the first switching element corresponding to B ₁ and B ₂ is turned off, and the first switching element corresponding to the battery element B _i is turned on to form a loop to complete the battery element. The energy on the inductive transformer L ₁ corresponding to B ₁ and B ₂ is released, and the battery B _i is charged at the same time.

If the voltage of the battery element _B1 is the highest among the voltages of the plurality of battery elements, there will not be one battery element with a lower voltage of the plurality of battery elements. Taking the battery elements B _i and B _j that are ranked the last two in the voltage of multiple battery elements as an example, the equalization process is divided into two steps: the battery element B _l is discharged; in a PWM cycle, the battery element is turned on first. The switch element corresponding to B _l reduces the energy of the battery element B ₁ and stores energy for the inductive transformer L ₁ at the same time, and the inductor current increases. Further, the battery elements B _i and B _j are charged; in the same PWM cycle, the first switching element corresponding to B _l is turned off, and the first switching element corresponding to the battery elements B _i and B _j is turned on to form a loop, _The energy release _on the inductive transformer L1 corresponding to the battery element B1 is completed, and the battery _B1 is charged at the same time.

When the plurality of battery elements have less than one battery element with a higher voltage, and the plurality of battery elements have less than one battery element with a lower voltage, the equalization process is similar to the above-mentioned equalization process, which is not repeated here.

Exemplarily, the second equalization module in FIG. 3 may be an inductive transformer, as shown in FIG. 7 , the second equalization module is represented by L ₂ .

Example 1, there is a one-to-many setting relationship between the third equalization module in the second layer equalization branch and the first layer equalization branch.

In some embodiments, the first-layer equalization branch includes multiple equalization branches, wherein the circuit structures of the multiple equalization branches may be the same, or the circuit structures of the multiple equalization branches are at least partially different.

4 and 8, the third equalization module in FIG. 4 may be an inductive transformer. As shown in FIG. ₈ , the inductive transformer is represented by L3, which is the same as the first _- layer equalization branch in FIG. 8. 801 has a one-to-many setting relationship. The first-layer equalization branch 801 in FIG. 8 may be the structure in FIG. 6 or the structure in FIG. 7 .

Example 2, there is a one-to-one setting relationship between the fourth equalization module in the equalization branch of the second layer and the equalization branch of the first layer.

In some embodiments, the first-layer equalization branch includes multiple equalization branches, wherein the circuit structures of the multiple equalization branches may be the same, or the circuit structures of the multiple equalization branches are at least partially different. 5 and 9, the fourth equalization module in FIG. 5 may be an inductive transformer. As shown in FIG. 9, the inductive transformer is represented by L ₄ , which is the same as the first-layer equalizing branch in FIG. 9 _. 901 has a one-to-one setting relationship. The first-layer equalization branch 901 in FIG. 9 may be the structure in FIG. 6 or the structure in FIG. 7 .

An embodiment of the present application provides an equalization control method, which is applied to the equalization control circuit described in the foregoing embodiment. Referring to FIG. 10 , the method includes the following steps:

Step 1001: When the energy difference between the N battery elements is greater than the first energy difference threshold, turn on the connections between the N battery elements and the M balancing modules to form a loop.

Step 1002: Balance the energy obtained by the N battery elements from the power source through the M balance modules.

Among them, M and N are both positive integers.

In this embodiment of the present application, the first energy difference threshold may be a numerical value, such as 0.1% of the full voltage range of the power supply, or a range, such as 0.1% to 5% of the full voltage range of the power supply.

It can be understood that, the first energy difference threshold may be set according to different system voltage levels and requirements. For example, in a system with a power supply voltage of 400V, the first energy difference threshold can be between 20V and 1V; in the case of high requirements, the first energy difference threshold can be set at 1V to 3V; in the case of low requirements, it can be set The first energy difference threshold is 4V˜20V.

In an optional embodiment of the present application, before step 1001, the method further includes: judging the current state of the N battery elements; acquiring the current energy of each battery when the N battery elements are in a charging state; calculating the N battery elements energy difference between.

In an optional embodiment of the present application, step 1002 may include: calculating the ratio of the remaining capacity of each battery element to the capacity of the fully charged state; determining the battery element with the lowest ratio as the battery element to be balanced; A balancing module charges the battery elements to be balanced.

An equalization control circuit, an equalization control method, a battery, and an electronic device provided by an embodiment of the present application, and the method is applied to a gateway, including: when the energy difference between N battery elements is greater than a first energy difference threshold, turning on N The connections between the battery elements and the M balancing modules form a loop; the energy obtained by the N battery elements from the power source is balanced by the M balancing modules. In this way, by monitoring the energy of the N battery elements, the energy difference between the N battery elements is obtained. When the energy difference is greater than the first energy difference threshold, the appropriate battery element can be turned on to balance the corresponding battery, avoiding the need for battery cells. There is a power difference between them, which prolongs the battery life and improves the safety of battery use.

The equalization control method in the above embodiment will be described below by taking an example.

FIG. 11 is an example of an equalization control method provided by an embodiment of the present application. As shown in FIG. 11 , the equalization control method may include:

Step 1101 : Determine whether the energy difference between the battery elements is greater than a preset threshold; if so, go to Step 1102 .

Step 1102: Calculate the battery element B _i with the lowest energy.

Among them, the voltages between the battery elements can be directly compared, and the battery element with the lowest voltage is determined as the battery element B _i with the lowest energy; it can also be calculated by using the battery state of charge (State of Charge, SOC) algorithm that comes with different systems. For example, the SOC value of the battery element is first calculated by the SOC algorithm, and then the battery element with the lowest SOC value is obtained by comparison, and the battery element is determined as the battery element B _i with the lowest energy.

Step 1103: Calculate the PWM duty cycle.

The range of the PWM duty cycle is 0% to 100%, and the PWM duty cycle can be set to 50%.

Step 1104: Use PWM to control the switching element corresponding to the battery element B _i .

The same as steps 1001 to 1002, the switching element corresponding to the battery element B _i with the lowest energy is turned on, so that the connection between the N battery elements and the M balancing modules forms a loop, and the N battery elements are connected to the N battery elements through the M balancing modules. The energy obtained by the power supply is equalized.

It should be noted that, for the description of the same steps and the same content in this embodiment as in other embodiments, reference may be made to the descriptions in other embodiments, and details are not repeated here.

An embodiment of the present application provides a battery that integrates the above-mentioned equalizing circuit.

An embodiment of the present application provides an electronic device, which can be applied to the method provided by the embodiment corresponding to FIG. 10 . Referring to FIG. 12 , the electronic device 12 includes: a battery pack 1201 , a processor 1202 and a communication bus 1203 ;

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

The battery pack 1201 is integrated with the above-mentioned balance control circuit;

The processor 1202 is configured to control the N switching elements, turn on the connections between the N battery elements and the M balancing modules to form a loop, and use the M balancing modules to control the connection between the N battery elements from all the N battery elements. The energy obtained by the power supply is balanced; wherein, the M and N are both positive integers.

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should be understood that references throughout the specification to "one embodiment" or "an embodiment" or "an embodiment of the present application" or "the preceding embodiments" or "some embodiments" or "some implementations" mean the same as implementing A particular feature, structure, or characteristic of an example is included in at least one embodiment of the present application. Thus, the appearances of "in one embodiment" or "in an embodiment" or "the present embodiments" or "the preceding embodiments" or "some embodiments" or "some implementations" in various places throughout the specification are not necessarily Must refer to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation. The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

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

The unit described above as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit; it may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may all be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above integration The unit can be implemented either in the form of hardware or in the form of hardware plus software functional units.

The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined under the condition of no conflict to obtain new method embodiments.

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

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

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, the execution includes: The steps of the above method embodiments; and the aforementioned storage medium includes: a removable storage device, a read only memory (Read Only Memory, ROM), a magnetic disk or an optical disk and other media that can store program codes.

Alternatively, if the above-mentioned integrated units of the present application are implemented in the form of software function modules and sold or used as independent products, they may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of software products in essence or the parts that contribute to related technologies. The computer software products are stored in a storage medium and include several instructions to make A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the methods of the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.

It is worth noting that the accompanying drawings in the embodiments of the present application are only for illustrating the schematic positions of each device on the terminal device, and do not represent the real position in the terminal device. The real position of each device or each area can be determined according to the actual situation ( For example, the structure of the terminal equipment is changed or shifted accordingly, and the scales of different parts in the terminal equipment in the figures do not represent real scales.

The above is only the embodiment of the present application, but the protection scope of the present application is not limited to this. Covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (10)

1. An equalization control circuit, characterized in that it comprises M equalization modules, power supplies, N battery elements and N switching elements; wherein, M and N are both positive integers; The N battery elements are connected to the M equalization modules through the N switching elements; The N switching elements are used to turn on the connections between the N battery elements and the M balancing modules to form a loop, and the N battery elements are connected to the N battery elements from the M balancing modules through the M balancing modules to form a loop. The energy obtained by the power supply is equalized. 2. The balance control circuit according to claim 1, wherein each battery element is connected in series with a first switching element to form a first series module; The first end of the first series module is connected to the positive pole of the power supply through the first end of the first equalization module, and the second end of the first series module is connected to the negative pole of the power supply; The second end of the first equalization module is connected to the negative pole of the power supply through a second switch element; The positive electrode of each battery element is connected to the positive electrode of the power source through a third switching element, and the negative electrode of each battery element is connected to the negative electrode of the power source; Each first series module is connected in series with the first equalization module, and a plurality of first series modules are connected in parallel to form a first layer equalization branch; the first equalization module in the first layer equalization branch There is a one-to-many arrangement relationship with the battery elements. 3. The equalization control circuit according to claim 1, wherein, Each battery element is connected in parallel with a fourth switching element to form a first parallel module; The first end of the first parallel module is connected to the positive pole of the power supply through the second equalization module corresponding to each battery element, and the second end of the first parallel module is connected to the negative pole of the power supply , forming the first equilibrium branch; The first equalization branches where the plurality of second equalization modules are located are connected in parallel to form a first layer of equalization branches; the second equalization modules and the battery elements in the first layer of equalization branches are arranged one-to-one relation. 4. The equalization control circuit according to claim 2 or 3, wherein the equalization control circuit further comprises a second-layer equalization branch, and the second-layer equalization branch is used for balancing a plurality of first-layer equalization branches Equalize. 5. The equalization control circuit according to claim 4, wherein, Each first-layer equalizing branch is connected in series with a fifth switching element to form a second series module; The first end of the second series module is connected to the positive pole of the power supply through the first end of the third equalizing module, and the second end of the second series module is connected to the negative pole of the power supply; The second end of the third equalization module is connected to the negative pole of the power supply through a sixth switch element; The positive pole of each first-layer balancing branch is connected to the positive pole of the power supply through a seventh switch element, and the negative pole of each first-layer balancing branch is connected to the negative pole of the power supply; Each second series module is connected in series with the third equalization module, and a plurality of second series modules are connected in parallel to form a second layer equalization branch; the third equalization module in the second layer equalization branch There is a one-to-many setting relationship with the first-layer equalization branch. 6. The equalization control circuit according to claim 4, wherein, Each first-layer equalizing branch is connected in parallel with an eighth switching element to form a second parallel module; The first end of the second parallel module is connected to the positive pole of the power supply through the fourth equalization module corresponding to each first-layer equalization branch, and the second end of the second parallel module is connected to the the negative pole of the power supply to form a second equalizing branch; The second equalization branches where a plurality of fourth equalization modules are located are connected in parallel to form a second-layer equalization branch; the fourth equalization module in the second-layer equalization branch and the first-layer equalization branch have a One-to-one setting relationship. 7 . The equalization control circuit according to 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. 8 . 8. A balanced control method, characterized in that, comprising: When the energy difference between the N battery elements is greater than the first energy difference threshold, the connection between the N battery elements and the M balancing modules is turned on to form a loop; The energy obtained by the battery element from the power source is balanced; wherein, the M and N are both positive integers. 9. A battery, characterized in that the equalization control circuit of any one of claims 1 to 7 is integrated. 10. An electronic device, characterized in that 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 balance control circuit of any one of claims 1 to 7; The processor is configured to control the N switching elements, turn on the connections between the N battery elements and the M equalization modules to form a loop, and use the M equalization modules to control the transmission of the N battery elements from the N battery elements. The energy obtained by the power supply is balanced; wherein, the M and N are both positive integers.

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