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Battery management system and method

A battery management system and battery pack technology, applied in battery circuit devices, terminal battery switching devices, electrical components, etc., can solve the problems of high cost, low reliability, and aggravate the charging and discharging characteristics of battery cells, so as to achieve low cost and high performance. The effect of power balance

Inactive Publication Date: 2015-04-29
SUZHOU NEW EASY ELECTRONICS
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AI Technical Summary

Problems solved by technology

[0002] In the application of solar energy storage batteries, the expected service time of the battery often reaches more than 10 years, but because it is difficult to report that the battery has a complete direction during the manufacturing process, there will be charging or discharging between the battery cells in series. The difference in characteristics, and the long-term use will further aggravate the difference in charge and discharge characteristics between the battery cells
Therefore, when using a battery pack of battery cells connected in series, there will be such a problem: when charging, even if some battery cells are overcharged in the same battery pack, there are still some battery cells that have not yet reached saturation; , in the same battery pack, some battery cells have not been fully discharged, but some battery cells are still over-discharged
[0004] However, there is still a problem that because the above two power balance methods need to involve complex control circuits and algorithms, the reliability is low and the cost is high

Method used

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0031] Moreover, in different implementations, the same reference numerals or signs may be used, but this does not represent a structural or functional connection, but is only for convenience of description.

[0032] ginseng figure 1 , to introduce a specific implementation manner of the battery management system 100 of the present invention. In this embodiment, the battery management system 100 includes a backup battery module 60 , several switch modules 40 , and a controller 10 .

[0033] The number of switch modules 40 corresponds to the number of battery modules 201 in the battery pack 200 , and ...

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Abstract

The invention discloses a battery management system and method. The battery management system comprises a standby battery module, a plurality of switch modules and a controller, wherein the switch modules are in series connection between the standby battery module and a plurality of battery modules in a battery pack, and the controller is used for detecting the voltage value of the battery modules in the battery pack and controls closing and opening of a specific switch module according to the charging and discharging state of the battery pack in order to connect a corresponding battery module in the battery pack with the standby battery module in parallel. The battery management system is provided with the standby battery module, enables the specific battery module in the battery pack to be charged or discharged according to the charging and discharging state of the battery pack, achieves electric quantity balance of the battery pack in the charging and discharging process, and is simple, reliable and low in cost.

Description

technical field [0001] The invention belongs to the technical field of battery pack production and manufacturing, and in particular relates to a battery management system and method. Background technique [0002] In the application of solar energy storage batteries, the expected service time of the battery often reaches more than 10 years, but because it is difficult to report that the battery has a complete direction during the manufacturing process, there will be charging or discharging between the battery cells in series. The difference in characteristics, and the long-term use will further aggravate the difference in charge and discharge characteristics between the battery cells. Therefore, when using a battery pack of battery cells connected in series, there will be such a problem: when charging, even if some battery cells are overcharged in the same battery pack, there are still some battery cells that have not yet reached saturation; , In the same battery pack, some ...

Claims

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Application Information

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IPC IPC(8): H02J7/36
CPCH02J7/342H02J7/36
Inventor 卢圣凯
Owner SUZHOU NEW EASY ELECTRONICS
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