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Active equalization circuit suitable for 16-string battery pack

An active equalization and battery pack technology, applied in the direction of charge equalization circuit, battery circuit device, arrangement of multiple synchronous batteries, etc., can solve the large difference of single cells, the influence of battery pack service life, and the inconsistency of single cells Accumulation and other problems to achieve the effect of improving utilization and prolonging cycle life

Pending Publication Date: 2019-10-08
广东思诺伟智能技术有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the long-term use of the battery pack will lead to the accumulation of inconsistencies in the single cells. The longer the time, the greater the difference between the single cells, and the service life of the battery pack will be seriously affected.

Method used

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  • Active equalization circuit suitable for 16-string battery pack
  • Active equalization circuit suitable for 16-string battery pack
  • Active equalization circuit suitable for 16-string battery pack

Examples

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Embodiment Construction

[0029] The present invention is further described in conjunction with the following examples.

[0030] Depend on Figure 1 to Figure 8 It can be seen that an active equalization circuit suitable for 16-string battery packs described in this embodiment includes a battery pack, a single-string voltage compensation module, a relay switching control module, a balance string number selection module, an MCU module, and a voltage detection module; The battery pack includes 16 strings of batteries B1-B16; the relay switching control module includes 17 relay modules; the 16 strings of battery packs are connected to the 17 relay modules; the total power of the 16 strings of battery packs is connected to form a total battery pack, 17 One of the relay modules controls the switch of the total battery pack, and the total battery pack can supply power to the single string voltage compensation module;

[0031] The voltage detection module is used to detect the voltage of each string of batte...

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PUM

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Abstract

The invention relates to the technical field of electric vehicle battery management, in particular to an active equalization circuit suitable for a 16-string battery pack. The active equalization circuit comprises battery packs, a single-string voltage compensation module, a relay switching control module, an equalization string number selection module, an MCU module and a voltage detection module. The voltage detection module is used for detecting the voltage of each battery pack and transmitting the voltage data to the MCU module. The single-string voltage compensation module charges each string of battery pack through the relay switching control module. After receiving the voltage data, the MCU module controls connection and disconnection of each relay module through the equalization string number selection module. The active equalization control of the battery packs is realize by arrangement of the single-string voltage compensation module, the relay switching control module, the equalization string number selection module, the MCU module and the voltage detection module so that the utilization rate of the battery packs is improved and the cycle service life of the battery packs is prolonged.

Description

technical field [0001] The invention relates to the technical field of electric vehicle battery management, in particular to an active equalization circuit suitable for 16-series battery packs. Background technique [0002] During the manufacturing process of electric vehicles, due to process problems and uneven materials, there are slight differences in the thickness of the battery plates, microporosity, activation degree of active materials, etc. The internal structure and materials of the batteries are not completely consistent. Therefore, the parameter values ​​such as battery capacity, internal resistance and voltage of the same model shipped from the same batch cannot be completely consistent. [0003] In addition, the long-term use of the battery pack will lead to the accumulation of inconsistencies in the single cells. The longer the time, the greater the difference between the single cells, and the service life of the battery pack will be seriously affected. Theref...

Claims

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Application Information

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IPC IPC(8): H02J7/00B60L58/22
CPCH02J7/0019B60L58/22Y02T10/70
Inventor 王德源张伟海
Owner 广东思诺伟智能技术有限公司
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