CN111403761B - Voltage equalization method and device, computer equipment and readable storage medium - Google Patents
Voltage equalization method and device, computer equipment and readable storage medium Download PDFInfo
- Publication number
- CN111403761B CN111403761B CN202010228603.2A CN202010228603A CN111403761B CN 111403761 B CN111403761 B CN 111403761B CN 202010228603 A CN202010228603 A CN 202010228603A CN 111403761 B CN111403761 B CN 111403761B
- Authority
- CN
- China
- Prior art keywords
- voltage
- matrix
- equalization
- battery
- scheme
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
- H01M6/5011—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature for several cells simultaneously or successively
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a voltage equalization method, a voltage equalization device, computer equipment and a storage medium, wherein the voltage equalization method is applied to a battery comprising a multi-channel battery cell and comprises the following steps: acquiring the voltage of each channel battery cell; assigning the voltage of each channel battery cell; acquiring all feasible schemes for voltage balancing of the battery; determining a scheme for voltage equalization based on the feasible scheme and the voltage assignment. According to the method, the optimal voltage balancing scheme can be determined under the condition that the balancing chip limit is met, the cells with the highest voltage can be balanced, and the cells with the higher voltage can be balanced as much as possible, so that the maximum voltage difference between the cells can be prevented from being further enlarged, the balancing efficiency is maximized, and the time required by balancing is shortened.
Description
Technical Field
Embodiments of the present invention relate to battery technologies, and in particular, to a voltage balancing method and apparatus, a computer device, and a computer-readable storage medium.
Background
In battery applications, it is generally desirable that the voltage values of the battery cells are at the same level, so as to improve the energy utilization rate of the battery. Therefore, when the voltage difference of a certain circuit of battery cells in the battery is obviously higher than that of other battery cells, the battery protection chip at the front end of the analog battery is usually used for passive equalization, and the circuit with the higher voltage value of the battery cells is kept consistent with the lower voltage of the battery cells in a mode of consuming energy through the resistor.
However, due to the design limitation of the circuit inside the analog front-end battery protection chip and other reasons, there is a special requirement for the channels that can be opened for equalization, when multiple battery cells in the battery need to be passively equalized, any one of the cell circuits cannot be opened at the same time, and the traditional equalization method cannot accurately select which cell to equalize, so that the equalization efficiency is poor.
Disclosure of Invention
Based on this, in order to solve the above technical problem, the present invention provides a voltage balancing method, device, computer device, and storage medium, which can determine an optimal voltage balancing scheme under the condition of satisfying the limitation of a balancing chip, thereby improving the balancing efficiency.
In a first aspect, an embodiment of the present invention provides a voltage equalization method, which is applied to a battery including a multi-channel cell, and the method includes:
acquiring the voltage of each channel battery cell;
assigning the voltage of each channel battery cell;
acquiring all feasible schemes for voltage balancing of the battery;
determining a scheme for voltage equalization based on the feasible scheme and the voltage assignment.
According to the voltage balancing method, the optimal voltage balancing scheme can be determined under the condition that the limitation of the balancing chip is met, the cells with the highest voltage can be balanced, and the cells with the higher voltage can be balanced as much as possible, so that the maximum voltage difference between the cells can be prevented from being further enlarged, the maximization of the balancing efficiency is realized, and the time required by balancing is shortened.
In one embodiment, the step of assigning the voltages of the channel battery cells includes:
assigning the voltage of the battery cell which does not meet the preset balance condition to be 0;
and assigning the battery cells meeting the preset balance condition according to the ascending order of the voltage.
In one embodiment, the method further comprises:
the voltage assignments for each cell are greater than the sum of the voltage assignments for all of the remaining cells that are less than the cell.
In one embodiment, the step of determining the scheme for voltage equalization based on the feasible scheme and the voltage assignment comprises:
establishing a first matrix according to all the feasible schemes;
establishing a second matrix according to the voltage assignment of each channel battery cell;
determining a scheme for voltage equalization based on the first matrix and the second matrix.
In one embodiment, the step of establishing the first matrix according to all possible schemes comprises:
the value of the battery cell allowing the equalization circuit to be opened is 1;
the battery cell of the equalizing circuit forbidden to be opened is assigned to be 0;
establishing the first matrix based on the assignment of each channel battery cell, wherein the number of rows of the first matrix is the number of feasible schemes for voltage equalization; the number of columns of the first matrix is the number of the battery cell channels of the battery.
In one embodiment, the step of establishing the second matrix according to the voltage assignments of the channel battery cells includes:
the number of rows of the second matrix is the number of cell channels of the battery.
In one embodiment, the step of determining the scheme for voltage equalization based on the first matrix and the second matrix comprises:
multiplying the first matrix with the second matrix to obtain a third matrix;
determining a row with the largest value in the third matrix;
and taking the feasible scheme in the first matrix corresponding to the row with the maximum numerical value as a voltage equalization scheme.
In a second aspect, an embodiment of the present invention further provides a voltage balancing apparatus, which is applied to a battery including a multi-channel battery cell, where the voltage balancing apparatus includes:
the voltage acquisition module is used for acquiring the voltage of each channel battery cell;
the voltage assignment module is used for assigning the voltage of each channel battery cell;
the scheme acquisition module is used for acquiring all feasible schemes for voltage balancing of the battery;
and the balance determining module is used for determining a voltage balance scheme based on the feasible scheme and the voltage assignment.
The voltage balancing device can determine the optimal voltage balancing scheme under the condition of meeting the limitation of the balancing chip, not only can balance the battery cell with the highest voltage, but also can balance the battery cells with the higher voltage as much as possible, thereby ensuring that the maximum voltage difference between the battery cells cannot be further enlarged, realizing the maximization of the balancing efficiency and shortening the time required by balancing.
In a third aspect, an embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program to implement the voltage equalization method as described above.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the voltage equalization method as described above.
Drawings
FIG. 1 is a schematic flow chart diagram of a voltage balancing method in one embodiment;
fig. 2 is a schematic flow chart illustrating steps of assigning voltages to the battery cells of the channels in one embodiment;
FIG. 3 is a flow diagram of a scheme for determining voltage equalization based on a feasible scheme and a voltage assignment in one embodiment;
FIG. 4 is a flow diagram illustrating steps for building a first matrix according to all possible scenarios in one embodiment;
FIG. 5 is a flow diagram illustrating a process for determining a voltage equalization based on a first matrix and a second matrix in one embodiment;
FIG. 6 is a block diagram of a voltage balancing apparatus according to an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
Fig. 1 is a schematic flowchart of a voltage equalization method in an embodiment, and as shown in fig. 1, in an embodiment, a voltage equalization method is applied to a battery including multi-channel battery cells, and the voltage equalization method includes:
step S120: and acquiring the voltage of each channel battery cell.
Step S140: and assigning the voltage of each channel battery cell.
Specifically, first, voltage data of all channel battery cores in the battery are obtained, and the values are assigned according to the voltage data of each channel battery core, where the assignment may be specifically determined according to the voltage of each channel battery core, whether equalization is needed, and other factors. Generally, an equalization threshold may be set, if the voltage of a certain channel battery cell exceeds the voltage difference of the standard voltage or the voltage difference with the lowest voltage is less than or equal to the equalization threshold, the battery cell may be considered as not requiring equalization, and may be assigned to 0, if the voltage of a certain channel battery cell exceeds the voltage difference of the standard voltage or the voltage difference with the lowest voltage is greater than the equalization threshold, the battery cell may be considered as requiring equalization, and the voltage assignment of the channel battery cell may generally be proportional to the voltage of the channel battery cell.
Step S160: all feasible schemes for voltage equalization of the battery are obtained.
Specifically, because the equalization chip has a circuit design limitation, it may not be possible to equalize the battery cells of any channel at the same time, and because the number of equalization battery cell channels of the equalization chip is limited, there are necessarily a limited number of equalization scheme combinations that satisfy the "chip limitation", and therefore it is necessary to count all feasible schemes that the equalization chip of the current battery can equalize the battery cells of each channel. The number of the feasible schemes can be specifically determined according to the circuit limit of the equalization chip and the number of the cell channels in the battery. For example, in one particular embodiment, an analog front-end battery protection chip of model ML5238, model LAPIS semiconductor, incorporated in the battery, limits the equalization circuitry to: equalization circuit switches of adjacent cells cannot be turned on simultaneously; the equalization circuits on both sides of a circuit that is turned off (i.e., circuits that are spaced apart from each other) cannot be turned on at the same time. Based on the above principle, if the current battery includes cells of 4 channels, there are three possible schemes for balancing the ML5238 chip, that is, balancing the cells of the first channel and the fourth channel simultaneously, balancing the cells of the second channel separately, and balancing the cells of the third channel separately.
Step S180: and determining a voltage balancing scheme based on the feasible scheme and the voltage assignment.
Specifically, in order to implement an optimal scheme of voltage equalization, it is generally necessary to equalize the cells with the highest voltage, so as to ensure that the maximum voltage difference between the cells is not further increased, and on the premise that the cells with the highest voltage are equalized, as many cells with higher voltages as possible should be equalized, so as to improve the equalization efficiency and shorten the time required for equalization. In all the feasible balancing schemes obtained in step S160, the feasible scheme with the highest sum of the voltage assignments is calculated according to the assignment of the cell voltages of the channels, that is, the highest balancing efficiency can be realized to obtain the optimal voltage balancing scheme, so that the cell of the corresponding channel in the battery can be balanced according to the balancing scheme.
According to the voltage balancing method, the optimal voltage balancing scheme can be determined under the condition that the limitation of the balancing chip is met, the cells with the highest voltage can be balanced, and the cells with the higher voltage can be balanced as much as possible, so that the maximum voltage difference between the cells can be prevented from being further enlarged, the maximization of the balancing efficiency is realized, and the time required by balancing is shortened.
Fig. 2 is a schematic flow chart illustrating the steps of assigning the voltages of the channel battery cells in one embodiment, and as shown in fig. 2, based on the foregoing technical solution, step S140 may specifically include:
step S142: and assigning the voltage of the battery cell which does not meet the preset balance condition as 0.
Step S144: and assigning the battery cells meeting the preset balance condition according to the ascending order of the voltage.
Specifically, after voltage data of each channel battery cell in the battery is acquired, voltages of the channel battery cells can be assigned to 0 for battery cells which do not satisfy a preset equalization condition in a sequence from small to large. And for the cells meeting the preset equalization conditions, the cells can be assigned according to the ascending order of the voltage, so that the assignment of the cells with higher voltage is larger, and the equalization can be preferentially obtained, so that the equalization efficiency is improved.
Further, in an embodiment, the step S120 may further include:
step S146: the voltage assignments for each cell are greater than the sum of the voltage assignments for all of the remaining cells that are less than the cell.
Specifically, for the voltage assignment of the battery cell meeting the preset equalization condition, it is true according to the mathematical induction method that the voltage assignment is specifically performed according to the ascending order of the voltage and the following inequality is satisfied:
for example, based on the inequality, the cell voltages of the channels meeting the equalization condition are assigned to 1, 2, 4 and 8 \8230fromlow to high in sequence. According to the inequality, the voltage assignment of the cell with the highest voltage is larger than the sum of the voltage assignments of all other cells, so that the condition that the cell with the highest voltage needs to be balanced is realized. In the same way, after the battery cell with the highest voltage is balanced, except the battery cell with the highest voltage, the battery cell with the second highest voltage value is also satisfied, and the analogy can be established, so that the balancing chip always preferentially balances the battery cell with the highest current voltage.
Fig. 3 is a schematic flow chart of the scheme for determining voltage equalization based on the feasible scheme and the voltage assignment in the foregoing embodiment, and as shown in fig. 3, on the basis of the foregoing technical scheme, step S180 may specifically include:
step S182: and establishing a first matrix according to all feasible schemes.
Step S184: and establishing a second matrix according to the voltage assignment of each channel battery core.
Step S186: a scheme for voltage equalization is determined based on the first matrix and the second matrix.
Specifically, after all the obtained feasible balanced schemes and the assignment of the cell voltages of each channel are obtained, a feasible scheme with the highest accumulated sum of voltage assignments can be obtained through calculation by establishing a matrix. Firstly, a first matrix is established by balancing which channel or channels in each feasible scheme, then a second matrix is established according to the voltage assignment of each channel battery core, and then the feasible scheme with the highest accumulated sum of voltage assignments, namely the optimal scheme of voltage balancing of the balancing chip, can be calculated by means of multiplying the first matrix and the second matrix.
Fig. 4 is a schematic flow chart of establishing the first matrix according to all feasible solutions in the foregoing embodiment, and as shown in fig. 4, on the basis of the foregoing technical solutions, step S182 in this embodiment may specifically include:
step S1822: the cell which allows the equalization circuit to be opened is assigned a value of 1.
Step S1824: and assigning 0 to the battery cell which forbids to open the equalizing circuit.
Step S1826: establishing the first matrix based on the assignment of each channel battery cell, wherein the number of rows of the first matrix is the number of feasible schemes for voltage equalization; the number of columns of the first matrix is the number of cell channels of the battery.
Specifically, for establishing the first matrix gate including all possible equalization schemes, the cell to which the equalization circuit is allowed to be opened by the chip may be assigned to 1, and the cell to which the circuit is prohibited from being opened by the chip may be assigned to 0, according to the circuit limit of the equalization chip. For example, in a specific embodiment, when the ML5238 described above is used to simulate a front end battery protection chip, the equalization circuit switches of the chip to the adjacent cells cannot be turned on simultaneously; and the equalization circuits (i.e. circuits spaced from each other) on both sides of a closed circuit cannot be opened simultaneously, so if the battery totally comprises 4-channel battery cores, three equalization feasible schemes can be obtained according to the circuit limitation of the chip, and a first moment can be established after assignment is carried outArraying:
each row of the first matrix represents a feasible combination of equalization schemes, and each column of the first matrix represents a channel cell in the battery.
Further, in an embodiment, on the basis of the foregoing technical solution, the step S184 specifically includes: the number of rows of the second matrix is the number of cell channels of the battery.
Specifically, after the first matrix is established, a second matrix may be obtained according to the voltage assignment of each channel battery cell, and the voltage assignment of each channel battery cell in the second matrix may be represented as bn. For example, if the battery includes 4 channels of cells in total, and the voltage assignments are b1, b2, b3, and b4, respectively, a second matrix may be established according to the voltage assignments:
each row of the first matrix represents one channel cell in the battery, so that the first matrix and the second matrix can be multiplied.
Fig. 5 is a schematic flow chart of a scheme of determining voltage equalization based on the first matrix and the second matrix in the foregoing embodiment, as shown in fig. 5, based on the foregoing technical scheme, step S186 in this embodiment may specifically include:
step S1862: the first matrix is multiplied by the second matrix to obtain a third matrix.
Step S1864: the row with the largest value in the third matrix is determined.
Step S1866: and taking the feasible scheme in the first matrix corresponding to the row with the maximum value as the scheme of voltage equalization.
Specifically, after obtaining a first matrix including all feasible solutions and a second matrix of each channel cell voltage assignment, the first matrix may be multiplied by the second matrix to obtain a new matrix, that is, C = a x
Each row of the third matrix represents the accumulated sum of the equalization voltage assignments of a feasible scheme, and the row with the largest value in c1, c2 and c3 is selected to represent the feasible scheme with the most equalization voltage assignments, namely the optimal equalization scheme, so that the equalization efficiency is highest. In one specific embodiment, when the ML5238 described above is used to simulate a front-end battery protection chip including a 4-channel cell, the first matrix is ≥ based on ≤ cell>
If the voltage assignments for each channel are 1, 2, 4, 8, respectively, then the second matrix is
So that a third matrix of +can be calculated>
That is, the value of the feasible solution in the first row is the maximum, and the first feasible solution is the optimal equalization solution, that is, the first channel and the fourth channel battery cells are equalized at the same time.
Fig. 6 is a schematic structural diagram of a voltage equalizing device in an embodiment, and as shown in fig. 6, in an embodiment, a voltage equalizing device 300 is applied to a battery including multiple channel battery cells, and the voltage equalizing device 300 includes: the voltage acquisition module 320 is configured to acquire voltages of the channel battery cells; the voltage assignment module 340 is configured to assign a voltage of each channel battery cell; the scheme acquisition module 360 is used for acquiring all feasible schemes for voltage balancing of the battery; and an equalization determining module 380 for determining a voltage equalization scheme based on the feasible scheme and the voltage assignment.
Specifically, the voltage obtaining module 320 obtains voltage data of all channel cells in the battery, and sends the voltage data to the voltage assigning module 340. After receiving the voltage data of each channel cell, the voltage assignment module 340 determines whether the voltage assignment data meets a preset equalization condition, the voltage assignment of the cell that does not meet the equalization condition is 0, the cells that meet the equalization condition are assigned according to an ascending voltage sequence, for balancing the cell with the highest current voltage all the time preferentially, the voltage assignment of each cell can be larger than the sum of the voltage assignments of all the other cells that are smaller than the cell, and after the assignment, the voltage assignment module 340 sends the voltage assignment data of each channel cell to the equalization determination module 380. The scheme acquisition module 360 determines all feasible schemes that the equalization chip can equalize the battery cells of each channel according to the circuit limit of the equalization chip and the number of the battery cell channels, and the scheme acquisition module 360 sends all feasible scheme data to the equalization determination module 380.
The equalization determining module 380 establishes a first matrix according to all the received feasible schemes, establishes a second matrix according to the received voltage assignments of the battery cells of each channel, and multiplies the first matrix and the second matrix to obtain a third matrix, thereby determining a feasible scheme with the highest accumulated sum of equalization voltage assignments in the third matrix, determining the feasible scheme as an optimal equalization scheme, and performing voltage equalization on the battery cells of the corresponding channels according to the scheme.
The voltage balancing device 300 can determine an optimal voltage balancing scheme under the condition of meeting the limitation of the balancing chip, so that the cells with the highest voltage can be balanced, and the cells with the higher voltage can be balanced as much as possible, thereby ensuring that the maximum voltage difference between the cells cannot be further enlarged, realizing the maximization of the balancing efficiency and shortening the time required by balancing.
It can be understood that the voltage balancing device provided by the embodiment of the present invention can execute the voltage balancing method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. Each unit and module included in the voltage balancing device in the above embodiment are only divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be realized; in addition, the specific names of the functional units are only for the convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
In one embodiment, a computer device is provided that includes a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor, when running the program, may perform the steps of: acquiring the voltage of each channel battery cell; assigning the voltage of each channel battery cell; acquiring all feasible schemes for voltage balancing of the battery; and determining a voltage balancing scheme based on the feasible scheme and the voltage assignment.
It is to be understood that the computer device provided by the embodiments of the present invention, the processor of which executes the program stored in the memory, is not limited to the method operations described above, and may also execute the relevant operations in the voltage equalization method provided by any embodiments of the present invention.
Further, the number of processors in the computer may be one or more, and the processors and the memory may be connected by a bus or other means. The memory can mainly comprise a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some instances, the memory may further include memory located remotely from the processor, which may be connected to the device/terminal/server over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
In one embodiment, the present invention also provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor, causes the processor to perform the steps of: acquiring the voltage of each channel battery cell; assigning the voltage of each channel battery cell; acquiring all feasible schemes for voltage balancing of the battery; and determining a voltage equalization scheme based on the feasible scheme and the voltage assignment.
It is to be understood that the computer-readable storage medium containing the computer program according to the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the voltage equalization method according to any embodiments of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present invention.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above embodiments only represent the preferred embodiments of the present invention and the applied technical principles, and the description thereof is specific and detailed, but not construed as limiting the scope of the invention. Numerous variations, changes and substitutions will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in more detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A voltage equalization method is applied to a battery comprising a multi-channel cell, and is characterized by comprising the following steps:
acquiring the voltage of each channel battery cell;
assigning the voltage of each channel battery cell;
acquiring all feasible schemes for voltage balancing of the battery;
determining a scheme for voltage equalization based on the feasible scheme and the voltage assignment; wherein the step of assigning the voltages of the channel battery cells includes:
assigning the voltage of the battery cell which does not meet the preset balance condition to be 0;
assigning the battery cells meeting the preset balance condition according to the ascending order of the voltage;
wherein the step of determining a scheme for voltage equalization based on the feasible scheme and the voltage assignment comprises:
establishing a first matrix according to all the feasible schemes;
establishing a second matrix according to the voltage assignment of each channel battery cell;
determining a scheme for voltage equalization based on the first matrix and the second matrix.
2. The method of claim 1, further comprising:
the voltage rating for each cell is greater than the sum of the voltage ratings for all remaining cells that are less than the cell.
3. The method according to claim 1, wherein the step of building a first matrix according to all possible scenarios comprises:
the value of the battery cell allowing the equalization circuit to be opened is 1;
the battery cell of the equalizing circuit forbidden to be opened is assigned to be 0;
establishing the first matrix based on the assignment of each channel battery cell, wherein the number of rows of the first matrix is the number of feasible schemes for voltage equalization; the number of columns of the first matrix is the number of the battery cell channels of the battery.
4. The method according to claim 3, wherein the step of establishing a second matrix according to the voltage assignments of the channel cells comprises:
the number of rows of the second matrix is the number of cell channels of the battery.
5. The method of claim 4, wherein the step of determining a scheme for voltage equalization based on the first matrix and the second matrix comprises:
multiplying the first matrix with the second matrix to obtain a third matrix;
determining a row with the largest value in the third matrix;
and taking the feasible scheme in the first matrix corresponding to the row with the maximum numerical value as a voltage equalization scheme.
6. The utility model provides a voltage balancing unit, is applied to the battery that includes multichannel electricity core, its characterized in that includes:
the voltage acquisition module is used for acquiring the voltage of each channel battery cell;
the voltage assignment module is used for assigning the voltage of each channel battery cell;
the scheme acquisition module is used for acquiring all feasible schemes for voltage balancing of the battery;
an equalization determination module for determining a scheme for voltage equalization based on the feasible scheme and the voltage assignment;
the voltage assignment module is specifically used for assigning the voltage of the battery cell which does not meet the equalization condition to 0 and assigning the battery cells which meet the equalization condition according to the ascending order of the voltage;
the balance determining module is specifically used for establishing a first matrix according to all the feasible schemes; establishing a second matrix according to the voltage assignment of each channel battery cell; determining a scheme for voltage equalization based on the first matrix and the second matrix.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the voltage equalization method according to any one of claims 1 to 5 when executing the program.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a voltage equalization method as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010228603.2A CN111403761B (en) | 2020-03-27 | 2020-03-27 | Voltage equalization method and device, computer equipment and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010228603.2A CN111403761B (en) | 2020-03-27 | 2020-03-27 | Voltage equalization method and device, computer equipment and readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111403761A CN111403761A (en) | 2020-07-10 |
| CN111403761B true CN111403761B (en) | 2023-03-28 |
Family
ID=71436737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010228603.2A Active CN111403761B (en) | 2020-03-27 | 2020-03-27 | Voltage equalization method and device, computer equipment and readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111403761B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718562A (en) * | 2009-11-20 | 2010-06-02 | 电子科技大学 | Method for real-time correcting error of multi-channel high-speed parallel alternative acquisition system |
| CN102136613A (en) * | 2011-02-18 | 2011-07-27 | 江苏技术师范学院 | Valve-regulated lead-acid battery equalizing charge method |
| US20120281444A1 (en) * | 2011-05-08 | 2012-11-08 | Paul Wilkinson Dent | Solar energy conversion and utilization system |
| CN104617621A (en) * | 2015-01-28 | 2015-05-13 | 杭州高特电子设备有限公司 | Improved battery pack maintaining method |
| CN109617151A (en) * | 2018-11-19 | 2019-04-12 | 浙江大学 | Lithium battery group active equalization control method based on Model Predictive Control |
-
2020
- 2020-03-27 CN CN202010228603.2A patent/CN111403761B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718562A (en) * | 2009-11-20 | 2010-06-02 | 电子科技大学 | Method for real-time correcting error of multi-channel high-speed parallel alternative acquisition system |
| CN102136613A (en) * | 2011-02-18 | 2011-07-27 | 江苏技术师范学院 | Valve-regulated lead-acid battery equalizing charge method |
| US20120281444A1 (en) * | 2011-05-08 | 2012-11-08 | Paul Wilkinson Dent | Solar energy conversion and utilization system |
| CN104617621A (en) * | 2015-01-28 | 2015-05-13 | 杭州高特电子设备有限公司 | Improved battery pack maintaining method |
| CN109617151A (en) * | 2018-11-19 | 2019-04-12 | 浙江大学 | Lithium battery group active equalization control method based on Model Predictive Control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111403761A (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104980389A (en) | Differential new user selection access method applicable to non-orthogonal multi-access system | |
| CN101938837B (en) | Inter-cell interference suppression method and device | |
| CN110248417B (en) | Resource allocation method and system for communication service in power Internet of things | |
| CN106162680A (en) | Dilatation parameter determination method and device | |
| CN102404862B (en) | Method for PDCCH (Physical Downlink Control Channel) resource allocation in LTE (Long Term Evolution) system | |
| CN108819774B (en) | Electric automobile and battery management system thereof | |
| CN102395158B (en) | Load balance optimization method considering user service quality requirements in mobile communication system | |
| CN111403761B (en) | Voltage equalization method and device, computer equipment and readable storage medium | |
| CN104968051B (en) | A kind of resource allocation methods and device of partial wideband uplink | |
| WO2014018539A1 (en) | Method and apparatus for inter-carrier load balancing | |
| CN111343719B (en) | LTE physical resource block allocation method, device and storage medium | |
| CN107888524B (en) | Interference alignment method based on maximum signal-to-leakage-and-noise ratio under interference broadcast channel | |
| CN107204817B (en) | Interference detection method and terminal | |
| CN109525995B (en) | Cell identification method, device and computer readable storage medium | |
| Park et al. | Computationally efficient dynamic code assignment schemes with call admission control (DCA-CAC) for OVSF-CDMA systems | |
| CN104202095B (en) | A kind of method and apparatus reducing base station bottom noise | |
| CN107895983A (en) | Battery equalization method and device, computer readable storage medium, battery management device and vehicle | |
| CN103200623A (en) | Decision-making method for regulating reserved channels dynamically in cognitive radio and implementation device | |
| CN114492083A (en) | Direct-current microgrid attack detection and recovery method for FDI attack | |
| CN109951329A (en) | A kind of network resource scheduling method and device | |
| CN111385001B (en) | User grouping method and device and electronic equipment | |
| CN111314963B (en) | Cell load balancing method and device | |
| CN104618932B (en) | A kind of optimization method and system of composite service | |
| CN104202270B (en) | The channel estimation methods and channel estimating apparatus of multiaerial system | |
| CN102484890B (en) | User device, base station and information feedback method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |