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

Abstract

The application discloses a kind of equalization control circuits, comprising: M equalization module, power supply, N battery elements and N switching elements;Wherein, M, N are all positive integers;N battery elements are connected with M equalization module by N switching elements;Wherein, N switching elements are used to connect between N battery elements and M equalization module to form loop, and the energy obtained by N battery elements from power supply is balanced by M equalization module.The application also discloses a kind of equalization control method, battery and electronic equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery energy storage, in particular to a balancing control circuit, a balancing control method, a battery and an electronic device. BACKGROUND

[0002] At present, in the energy storage system, using a transformer to realize the balancing of the battery capacity in the battery system is the most common method. The advantage of such a method is that since energy does not flow between the batteries, the influence of circulating current on the battery life can be reduced; and by directly interacting with the power grid or charger through the transformer, the number of times of charging and discharging the battery energy is reduced, thereby improving the performance of the battery.

[0003] However, using a transformer for balancing in a high-voltage scenario will result in a particularly large volume and extremely high cost of energy storage components. SUMMARY

[0004] The present application provides a balancing control circuit, a balancing control method, a battery and an electronic device, which can reduce the volume of the energy storage components and save costs.

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

[0006] A balancing control circuit, comprising M balancing modules, a power supply, N battery elements and N switching elements; wherein M and N are positive integers;

[0007] The N battery elements are connected to the M balancing modules through the N switching elements;

[0008] The N switching elements are used to turn on the connection between the N battery elements and the M balancing modules to form a loop, and the M balancing modules are used to balance the energy obtained by the N battery elements from the power supply.

[0009] A balancing control method, comprising:

[0010] When the energy difference between the N battery elements is greater than a first energy difference threshold, the connection between the N battery elements and the M balancing modules is turned on to form a loop, and the M balancing modules are used to balance the energy obtained by the N battery elements from the power supply; wherein M and N are positive integers.

[0011] A battery integrated with the above-mentioned balancing circuit.

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

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

[0014] The battery pack integrates the above-mentioned equalization control circuit.

[0015] The processor is configured to control the N switch elements to turn on the connection between the N battery elements and the M equalization modules to form a loop, and equalize the energy obtained by the N battery elements from the power supply through the M equalization modules; wherein M and N are positive integers.

[0016] The equalization control circuit provided by the present application comprises: M equalization modules, a power supply, N battery elements and N switch elements; wherein M and N are positive integers; the N battery elements are connected with the M equalization modules through the N switch elements; wherein the N switch elements are configured to turn on the connection between the N battery elements and the M equalization modules to form a loop, and equalize the energy obtained by the N battery elements from the power supply through the M equalization modules. That is, the equalization circuit provided by the present application has a smaller size, saves cost, and the number of battery elements and equalization modules can be set according to actual scenarios, which is suitable for different scenarios and has a wide range of applications. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure diagram of an equalization control circuit provided by an embodiment of the present application is provided.

[0018] Figure 2 A structure diagram of a first-layer equalization branch provided by an embodiment of the present application is provided. Figure 1

[0019] Figure 3 A structure diagram of a first-layer equalization branch provided by an embodiment of the present application is provided. Figure 2

[0020] Figure 4 A circuit of a second-layer equalization branch provided by an embodiment of the present application is provided. Figure 1

[0021] Figure 2 A circuit of a second-layer equalization branch provided by an embodiment of the present application is provided. Figure 6

[0022] Figure 1 A circuit of a first-layer equalization branch provided by an embodiment of the present application is provided. Figure 7

[0023] Figure 2 A circuit of a first-layer equalization branch provided by an embodiment of the present application is provided. Figure 8

[0024] Figure 1 ​​​​​​A second layer equalization branch circuit provided for an embodiment of the present application Figure 9 ;

[0025] Figure 2 A second layer equalization branch circuit provided for an embodiment of the present application Figure 10 ;

[0026] Figure 11 A schematic diagram of an equalization control method provided for an embodiment of the present application

[0027] Figure 12 An example of an equalization control method provided for an embodiment of the present application

[0028] Figure 1 A structural schematic diagram of an electronic device provided for an embodiment of the present application DETAILED DESCRIPTION

[0029] In order to make the purposes, 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, and the described embodiments should not be regarded as limiting the present application, and all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0030] In the following description, "some embodiments" are described, which describe a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0031] In the following description, the terms "first\second\third" are only to distinguish similar objects, and do not represent a specific order of the objects, and it can be understood that "first\second\third" can be interchanged in a specific order or sequence as allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0032] 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 the present 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.

[0033] Figure 1 A structural schematic diagram of an equalization control circuit provided by an embodiment of the present application, as shown in Figure 2 The equalization circuit includes M equalization modules 101, a power supply 102, N battery elements 103 and N switch elements 104;

[0034] Wherein, M and N are both positive integers;

[0035] N battery elements 103 are connected with M equalization modules 101 through N switch elements 104;

[0036] Wherein, the N switch elements 104 are used to turn on the connection between the N battery elements 103 and the M equalization modules 101 to form a loop, and the energy obtained by the N battery elements 103 from the power supply 102 is equalized through the M equalization modules 101.

[0037] In some embodiments, the equalization module and the battery element can have a one-to-one setting relationship, that is, M=N; in other embodiments, the equalization module and the battery element can also have a one-to-many setting relationship, that is, M<N.

[0038] In the embodiments of the present application, the equalization module 101 includes but is not limited to the following devices or circuits: inductive transformer, coupled transformer, resonant circuit composed of capacitor and inductor, etc. Here, the embodiments of the present application are not limited.

[0039] In the embodiments of the present application, the power supply can be a switching power supply, a PCS (Power Conversion System, energy storage converter), or other circuits or devices that can provide power resources. Here, the embodiments of the present application are not limited.

[0040] In the embodiments of the present application, the battery element refers to a cup, tank or other container or part of the space of a composite container containing electrolyte solution and metal electrodes to generate current, which can convert chemical energy into electrical energy. The types of battery elements include but are not limited to lithium batteries and lead-acid batteries. The battery element can be a battery cluster composed of several battery boxes in series, or a battery system composed of several battery clusters in parallel. Here, the embodiments of the present application are not limited.

[0041] In the embodiments of the present application, the switch element can be a single-control switch, a double-control switch, a multi-control switch, etc., or a switch module composed of two Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) tube switches connected in anti-parallel, etc. Here, the embodiments of the present application are not limited.

[0042] The above balance control circuit, the balance control process can be: when there is a voltage difference between the battery elements, the highest in the voltage of the plurality of battery elements is determined as a high-voltage battery element, and the lowest in the voltage of the plurality of battery elements is determined as a low-voltage battery element; then, the switch module corresponding to the high-voltage battery element is turned on, and the high-voltage battery element stores electric energy to the balance module; then, the switch module corresponding to the low-voltage battery element is turned on, and the balance module transfers electric energy to the low-voltage battery element; in this way, the voltage balance between the high-voltage battery element and the low-voltage battery element is completed, the power difference between the battery monomers is avoided, the service life of the battery is prolonged, and the safety of the battery use is improved.

[0043] Example one, the first balance module in the first layer balance branch has a one-to-many setting relationship with the battery elements. Exemplarily, Figure 2 is a structural diagram of a first layer balance branch provided by the application. As Figure 3 indicated, N is 3 and M is 1.

[0044] Each battery element is connected in series with a first switch element S l to form a first series module;

[0045] 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 balance 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 balance module is connected to the negative pole of the power supply through a second switch element S2; the positive pole of each battery element is connected to the positive pole of the power supply through a third switch element S3, and the negative pole of each battery element is connected to the negative pole of the power supply; each first series module is connected in series with the first balance module, and a plurality of first series modules are connected in parallel to form a first layer balance branch.

[0046] Example two, the second balance module in the first layer balance branch has a one-to-one setting relationship with the battery elements. Exemplarily, Figure 3 is a structural diagram of a first layer balance branch provided by the application. As Figure 2 indicated, N is 3 and M is 3.

[0047] Each battery element is connected in parallel with a fourth switch 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 balance 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 to form a first balance branch; a plurality of second balance modules in the first balance branch are connected in parallel to form a first layer balance branch.

[0048] In other embodiments of the application, the balance module in the first layer balance branch can also have a many-to-many setting relationship with the battery elements, for example, N is 3 and M is 2, that is, two balance modules control the balance of three battery elements.

[0049] In the embodiments of the present application, the equalization control circuit can include one layer of equalization branches; the equalization control circuit can also include multiple layers of equalization branches, and the high-layer equalization branch is used for equalization control of the bottom-layer equalization branch. For example, the equalization control circuit further includes a second-layer equalization branch, and the second-layer equalization branch is used for equalization control of multiple first-layer equalization branches. Here, the number of layers of the multiple-layer equalization branch is not limited in the embodiments of the present application.

[0050] It can be understood that the multiple first-layer equalization branches controlled by the second-layer equalization branch can be Figure 3 or Figure 4 The structure shown in the figure, and the equalization modules in the second-layer equalization branch and the multiple first-layer equalization branches can also use the similar equalization control mode. That is, the equalization modules in the first-layer equalization branch and the battery elements can be in a one-to-many setting relationship, or the equalization modules in the first-layer equalization branch and the battery elements can be in a one-to-one setting relationship; the equalization modules in the second-layer equalization branch and the first-layer equalization branches can be in a one-to-many setting relationship, or the equalization modules in the second-layer equalization branch and the first-layer equalization branches can be in a one-to-one setting relationship; the present application can flexibly select the setting relationship between the equalization modules in different layers and the equalization control objects according to actual needs, and here, the embodiments of the present application are not limited.

[0051] Example one, the third equalization module in the second-layer equalization branch and the first-layer equalization branches are in a one-to-many setting relationship. For example, Figure 4 is a structure schematic diagram of a second-layer equalization branch provided by the present application. As Figure 5 shown, the number of first-layer equalization branches is 3, and the number of third equalization modules is 1.

[0052] Each first-layer equalization branch is connected in series with a fifth switch 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 equalization 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 S6; the positive pole of each first-layer equalization branch is connected to the positive pole of the power supply through a seventh switch element S7, and the negative pole of each first-layer equalization 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 the multiple second series modules are connected in parallel to form the second-layer equalization branch.

[0053] Example two, the fourth equalization module in the second-layer equalization branch and the first-layer equalization branches are in a one-to-one setting relationship. For example, Figure 5 is a structure schematic diagram of a second-layer equalization branch provided by the present application. As Figure 2As shown, the number of first-layer equalization branches is 3, and the number of fourth equalization modules is 3.

[0054] Each first-layer equalization branch is connected in parallel with an eighth switch element S8 to form a second parallel module; a first end of the second parallel module is connected to a positive pole of a power supply through a corresponding fourth equalization module of each first-layer equalization branch, and a second end of the second parallel module is connected to a negative pole of the power supply to form a second equalization branch; the second equalization branches in which the plurality of fourth equalization modules are connected in parallel form a second-layer equalization branch.

[0055] In other embodiments of the present application, the equalization modules in the second-layer equalization branch and the first-layer equalization branch can also have a many-to-many setting relationship, for example, the number of first-layer equalization branches is 3, and the number of equalization modules is 2, that is, two equalization modules control the three first-layer equalization branches.

[0056] It should be noted that the first-layer equalization branch can constitute an independent equalization control circuit, which is the smallest unit of the equalization control circuit in the present application. In addition to the second-layer equalization branch, there can be more layers of equalization branches, which are not limited in the embodiments of the present application.

[0057] For example, Figure 6 The first equalization module in the above formula can be an inductive transformer, such as Figure 6 As shown, the first equalization module is denoted by L1.

[0058] The equalization process of the equalization control circuit of the present application will be introduced by taking Figure 3 For example, the voltage of battery element B l is the highest among the voltages of the plurality of battery elements, and the voltage of battery element B i is the lowest among the voltages of the plurality of battery elements. The equalization process is divided into two steps: discharging of battery element B l ; in a pulse width modulation (PWM) period, the corresponding switches S l and S2 of battery element B l are turned on, and the current flows through the loop composed of the corresponding switch element S1 of battery element B l , the inductive transformer L1, the corresponding switch element S2 of battery element B l , and battery element B l ; in this way, the energy of battery element B1 is reduced, and the inductive transformer L1 is charged, and the inductive current rises. Further, charging of battery element B i ; in the same PWM period, the corresponding switch element S l of battery element B l is turned off, and the corresponding switch element S2 of battery element B iThe corresponding first switching element, current flows through switching element S2 and battery element B. i The energy flows from the switching element S1 back to the inductive transformer L1. This completes the energy release from the inductive transformer L1, simultaneously supplying power to battery B. i Charge.

[0059] The equalization control circuit provided in this application embodiment can also have the following equalization methods:

[0060] If there is more than one battery element with a higher voltage among multiple battery elements, then battery element B... i The voltage of [B] is the lowest among the voltages of multiple battery elements. The battery element with the highest or second-highest voltage among the multiple battery elements is [B]. l Taking B2 as an example, the balancing process consists of two steps: battery element B l B1 and B2 discharge; within one PWM cycle, the first switching elements corresponding to B1 and B2 are turned on, reducing the energy of battery elements B1 and B2, while simultaneously storing energy for the inductive transformer L1 corresponding to battery elements B1 and B2, causing the inductor current to rise. Further, battery element B... i Charging; during the same PWM cycle, turn off B. l The first switching element corresponding to B2 turns on the battery element B. i The corresponding first switching element forms a loop, completing the energy release on the inductive transformer L1 corresponding to battery elements B1 and B2, and simultaneously supplying energy to battery B. i Charge.

[0061] If battery element B l The voltage of [B] is the highest among the multiple battery elements, and there is more than one battery element with a lower voltage. The battery element with the second-lowest voltage among the multiple battery elements is B. i B j For example, the balancing process consists of two steps: battery element B l Discharge; in one PWM cycle, battery element B is turned on first. l The corresponding switching element reduces the energy of battery element B1 while simultaneously storing energy for the inductive transformer L1, causing the inductor current to increase. Furthermore, battery element B... i B j Charging; during the same PWM cycle, turn off B. l The corresponding first switching element turns on battery element B. i B j The corresponding first switching element forms a loop, completing the battery element B. l The energy released from the corresponding inductive transformer L1 is also used for battery B. i Charge.

[0062] When the voltage of the high-voltage battery element of the plurality of battery elements is not one, and the voltage of the low-voltage battery element of the plurality of battery elements is not one, the equalization process is similar to the above-mentioned equalization process, which will not be described here.

[0063] Exemplarily, Figure 7 The second equalization module in the second equalization branch can be an inductive transformer, as shown in Figure 4 The second equalization module is denoted by L2.

[0064] In Example 1, the third equalization module in the second equalization branch has a one-to-many setting relationship with the first equalization branch.

[0065] In some embodiments, the first equalization branch includes a plurality of equalization branches, wherein the circuit structures of the plurality of equalization branches can be the same, or at least partially different.

[0066] In combination with Figure 8 and Figure 4 as shown, Figure 8 The third equalization module in the second equalization branch can be an inductive transformer, as shown in Figure 8 The inductive transformer is denoted by L3, and L3 has a one-to-many setting relationship with the first equalization branch 801 in Figure 8 . Among them, Figure 6 The first equalization branch 801 in Figure 7 may be the structure in Figure 5 may be the structure in

[0067] In Example 2, the fourth equalization module in the second equalization branch has a one-to-one setting relationship with the first equalization branch.

[0068] In some embodiments, the first equalization branch includes a plurality of equalization branches, wherein the circuit structures of the plurality of equalization branches can be the same, or at least partially different. In combination with Figure 9 and Figure 5 as shown, Figure 9 The fourth equalization module in the second equalization branch can be an inductive transformer, as shown in Figure 9 The inductive transformer is denoted by L4, and L4 has a one-to-one setting relationship with the first equalization branch 901 in Figure 9 . Among them, Figure 6 The first equalization branch 901 in Figure 7 may be the structure in Figure 10 may be the structure in

[0069] Embodiments of the present application provide an equalization control method applied to the equalization control circuit described in the above embodiments, referring to Figure 11 as shown, the method comprises the following steps:

[0070] Step 1001: when the energy difference between the N battery elements is greater than a first energy difference threshold, turn on the connection between the N battery elements and the M equalization modules to form a loop.

[0071] Step 1002: equalize the energy obtained by the N battery elements from the power supply through the M equalization modules.

[0072] Wherein, M and N are positive integers.

[0073] In the embodiments of the present application, the first energy difference threshold can be a numerical value, for example, 0.1% of the full voltage range of the power supply; or a range, for example, 0.1% to 5% of the full voltage range of the power supply.

[0074] It can be understood that 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; in the case of high requirements, the first energy difference threshold can be set to 1V to 3V; in the case of low requirements, the first energy difference threshold can be set to 4V to 20V.

[0075] In an optional embodiment of the present application, before step 1001, it further includes: judging 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; and calculating the energy difference between the N battery elements.

[0076] In an optional embodiment of the present application, step 1002 can include: calculating the ratio of the remaining capacity of each battery element to the capacity of its full charge state; determining the battery element with the lowest ratio as the battery element to be equalized; and charging the battery element to be equalized through the M equalization modules.

[0077] The embodiments of the present application provide an equalization control circuit, an equalization control method, a battery and an electronic device. The method is applied to a gateway and includes: when the energy difference between the N battery elements is greater than a first energy difference threshold, turning on the connection between the N battery elements and the M equalization modules to form a loop; and equalizing the energy obtained by the N battery elements from the power supply through the M equalization modules. In this way, by monitoring the energy of the N battery elements, the energy difference between the N battery elements is obtained, and when the energy difference is greater than the first energy difference threshold, the appropriate battery element can be turned on to equalize the corresponding battery, avoiding the existence of power difference between the battery monomers, prolonging the service life of the battery, and improving the safety of the battery use.

[0078] The equalization control method in the above embodiments will be described below by way of example.

[0079] Figure 11An example of an equalization control method provided for an embodiment of the present application is shown in Figure 10 The equalization control method can include:

[0080] Step 1101: Determine whether the energy difference between the battery elements is greater than a preset threshold; if yes, execute step 1102.

[0081] Step 1102: Calculate the battery element B i with the lowest energy.

[0082] Wherein, the voltage 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; or the battery element with the lowest energy can be calculated by using the battery state of charge (SOC) algorithm of different systems, for example, the SOC value of the battery element is calculated by the SOC algorithm first, and then the battery element with the lowest SOC value is compared and determined as the battery element B i with the lowest energy.

[0083] Step 1103: Calculate the PWM duty cycle.

[0084] Wherein, the range of the PWM duty cycle is 0% to 100%, and the PWM duty cycle can be set to 50%.

[0085] Step 1104: Control the corresponding switching element of the battery element B i .

[0086] The same as steps 1001-1002, the corresponding switching element of the battery element B i with the lowest energy is turned on, so that the connection between the N battery elements and the M equalization modules forms a loop, and the energy obtained by the N battery elements from the power supply is equalized by the M equalization modules.

[0087] It should be noted that the same steps and the same content in the present embodiment and other embodiments are described with reference to the description in other embodiments, and will not be described here.

[0088] The present embodiment provides a battery integrated with the above-mentioned equalization circuit.

[0089] The present embodiment provides an electronic device which can be applied to Figure 12 The method provided by the corresponding embodiment is described with reference to ​ The electronic device 12 includes a battery pack 1201, a processor 1202, and a communication bus 1203.

[0090] The communication bus 1203 is configured to realize the communication connection between the processor 1201 and the battery pack 1201.

[0091] The battery pack 1201 is integrated with the above-mentioned equalization control circuit.

[0092] The processor 1202 is configured to control N switch elements to turn on the connection between the N battery elements and M equalization modules to form a loop, and equalize the energy obtained by the N battery elements from the power supply through the M equalization modules; wherein, M and N are positive integers.

[0093] It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip with processing capability of signals. The processor mentioned above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general processor can be a microprocessor or the processor can also be any conventional processor.

[0094] It should be understood that the "one embodiment" or "an embodiment" or "the embodiment of the present application" or "the foregoing embodiment" or "some embodiments" or "some implementations" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" or "the embodiment of the present application" or "the foregoing embodiment" or "some embodiments" or "some implementations" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can 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 number of the above-mentioned processes does not mean the execution order, and the execution order of the processes should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence number of the embodiments of the present application is only for description, not representing the advantages and disadvantages of the embodiments.

[0095] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other manners. The embodiments described above are merely exemplary, and the unit division is merely logical function division, and there can be other division manners in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling, direct coupling, or communication connection between the components can be indirect coupling or communication connection through some interfaces, and can be electrical, mechanical, or in other forms.

[0096] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units; they can be located in one place, or distributed on a plurality of network units; and some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0097] In addition, each functional unit in each embodiment of the present 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 the form of hardware, or in the form of hardware plus software functional units.

[0098] The methods disclosed in the several method embodiments provided in the present application can be combined arbitrarily without conflict, to obtain new method embodiments.

[0099] The features disclosed in the several product embodiments provided in the present application can be combined arbitrarily without conflict, to obtain new product embodiments.

[0100] The features disclosed in the several method or device embodiments provided in the present application can be combined arbitrarily without conflict, to obtain new method embodiments or device embodiments.

[0101] Those skilled in the art can understand that all or part of the steps of the above method embodiments can be completed by program instruction related hardware, and the foregoing program can be stored in a computer readable storage medium, and the program is executed to perform steps including the above method embodiments; and the foregoing storage medium includes mobile storage devices, read only memory (ROM), magnetic disks or optical disks, and various media that can store program codes.

[0102] Alternatively, the above-mentioned integrated units of the present application, if realized in the form of software function modules and sold or used as independent products, can also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the embodiments of the method of the present application. The aforementioned storage medium includes: mobile storage devices, ROM, magnetic disks or optical disks, and various media that can store program codes.

[0103] It is worth noting that the drawings in the embodiments of the present application are only for illustrating the schematic positions of various devices on the terminal device, and do not represent the real positions in the terminal device, and the real positions of various devices or various regions can be changed or offset according to the actual situation (for example, the structure of the terminal device), and the proportions of different parts in the terminal device in the drawings do not represent the real proportions.

[0104] The above is only the implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An equalization control circuit, characterized by, The equalization control circuit comprises M equalization modules, a power supply, N battery elements and N switch elements; wherein, M and N are positive integers; The N battery elements are connected with the M equalization modules through the N switch elements; The N switch elements are used for conducting the connection between the N battery elements and the M equalization modules to form a loop, and equalizing the energy obtained by the N battery elements from the power supply through the M equalization modules; Each battery element is connected with a first switch element in series 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 pole of each battery element is connected to the positive pole of the power supply through a third 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 the first equalization module in series, 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 has a one-to-many setting relationship with the battery elements; Alternatively, each battery element is connected with a fourth switch element in parallel 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 corresponding second equalization module of each battery element, and the second end of the first parallel module is connected to the negative pole of the power supply, forming a first equalization branch; A plurality of first equalization branches in which the second equalization modules are located are connected in parallel to form a first layer equalization branch; the second equalization module in the first layer equalization branch has a one-to-one 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, which is used for equalizing a plurality of first layer equalization branches.

3. The equalization control circuit of claim 2, wherein, Wherein, Each first layer equalization branch is connected with a fifth switch element in series 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 equalization 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 equalization branch is connected to the positive pole of the power supply through a seventh switch element, and the negative pole of each first layer equalization branch is connected to the negative pole of the power supply; Each second series module is connected with the third equalization module in series, 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 has a one-to-many setting relationship with the first layer equalization branch.

4. The equalization control circuit of claim 2, wherein, Wherein, Each first layer equalization branch is connected with an eighth switch element in parallel 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 corresponding fourth equalization module of each first layer equalization branch, and the second end of the second parallel module is connected to the negative pole of the power supply, forming a second equalization branch; The second equalization branches in parallel are formed by a plurality of fourth equalization modules; the fourth equalization modules in the second equalization branches have a one-to-one setting relationship with the first equalization branches.

5. 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.

6. An equalization control method characterized by, The equalization control circuit for controlling any one of claims 1 to 5 comprises: 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 equalization modules is turned on to form a loop; the energy obtained by the N battery elements from the power supply is balanced by the M equalization modules; wherein M and N are positive integers.

7. A battery, characterized by The equalization control circuit of any one of claims 1 to 5 is integrated.

8. 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 of any one of claims 1 to 5; The processor is used to control N switching elements, turn on the connection between the N battery elements and the M equalization modules to form a loop, and balance the energy obtained by the N battery elements from the power supply by the M equalization modules; wherein M and N are positive integers.

Images