Battery cell equalization method and system of battery pack, battery equipment and storage medium
An equalization method and equalization system technology, applied in the direction of charge equalization circuit, battery circuit device, arrangement of multiple synchronous batteries, etc., can solve problems such as low efficiency and slow speed, achieve high efficiency, improve efficiency, and optimize equalization effect Effect
Pending Publication Date: 2022-02-11
博科能源系统(深圳)有限公司
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Problems solved by technology
The current cell equalization method is usually the most passive equalization technology. Its principle is to use the relative parity equalization algorithm or single cell equalization algorithm alone in combination with software to screen out qualified cells, but the use of relative parity equalization algorithm or single cell equalization algorithm less efficient and slower
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[0026] Now in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.
[0027] Please refer to figure 1 and figure 2 , figure 1 It is a schematic flow chart of the first embodiment of the battery cell equalization method provided by the present invention. figure 2 It is a structural schematic diagram of an embodiment of the battery pack provided by the present invention. Such as figure 2 As shown in , the battery pack 10 includes cells 11 .
[0028] The cell equalization method of the battery pack provided by the present invention comprises the following steps:
[0029] S101: Obtain charging parameters of the battery pack, the charging parameters include cell parameters of each cell, and the cell parameters include cell voltage.
[0030] In a specific implementation scenario, the charging parameters of the battery pack are obtained every preset cycle. The length of the preset cycle is 1-15s, such as 1...
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The invention provides a battery cell equalization method and system of a battery pack, battery equipment and a storage medium. The method comprises the steps: obtaining a charging parameter of the battery pack, wherein the charging parameter comprises a battery cell parameter of each battery cell, and the battery cell parameter comprises a battery cell voltage; according to the charging parameters, taking the battery cell meeting a preset equalization condition as a condition battery cell, and taking the battery cell with the highest battery cell voltage in the condition battery cell as a target equalization battery cell; selecting at least one section from the condition battery cells as other equalization battery cells according to the target equalization battery cell, so that the other equalization battery cells are not adjacent to each other and the other equalization battery cells are not adjacent to the target equalization battery cell; and performing equalization operation on the target equalization battery cell and the rest equalization battery cells. According to the invention, the equalization efficiency can be effectively improved, the equalization time is saved, the equalization effect is optimized, and the operation safety is improved.
Description
technical field [0001] The invention relates to the field of batteries, in particular to a cell equalization method, system, battery device and storage medium of a battery pack. Background technique [0002] At present, BMS (BATTERY MANAGEMENT SYSTEM, battery management system) battery pack is usually composed of multiple cells connected in series and parallel. The difference in capacity and other factors will cause the voltage of each battery cell to be inconsistent, which will eventually lead to a decrease in the life of the battery lithium ion and the battery life. [0003] In order to protect the cells of the battery, it is necessary to balance the cells of the battery. The current battery cell equalization method is usually the most passive equalization technology. Less efficient and slower. Contents of the invention [0004] The technical problem to be solved by the embodiments of the present invention lies in the low efficiency and slow speed of the battery pack ...
Claims
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Login to View More IPC IPC(8): H02J7/00
CPCH02J7/0016H02J7/00309
Inventor 林显炎王书涛严威
Owner 博科能源系统(深圳)有限公司