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Battery equalization method and battery equalization device

A battery equalization and battery technology, which is applied in charge equalization circuit, battery/fuel cell control device, battery circuit device, etc., can solve problems such as poor effect, ignoring the overall balance effect of the battery pack, and imbalance, so as to improve inconsistency , Improve the equalization efficiency and equalization effect, and improve the effect of charging and discharging capacity

Inactive Publication Date: 2020-11-17
地上铁租车(深圳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional battery active equalization equipment only balances individual batteries, ignoring the overall equalization effect of the battery pack, and it is easy to appear unbalanced soon after equalization
[0004] It can be seen that in the prior art, the effect of equalizing the battery pack is not good

Method used

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  • Battery equalization method and battery equalization device
  • Battery equalization method and battery equalization device
  • Battery equalization method and battery equalization device

Examples

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Embodiment Construction

[0031] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In the following description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only for facilitating description of the present invention and has no specific meaning by itself. Therefore, 'module', 'part' or 'unit' may be used in combination.

[0033] The mobile terminal mentioned in the embodiment of the present invention may be a mobile phone, a tablet computer (Tablet PersonalComputer), a laptop computer (Laptop Computer), a personal digital assistant (personal digital assistant, referred to as PDA), a mobile Internet device (Mobile Internet Device, MID ) or wearable devices (Wearable Device), etc.

[0034] figure 1 It is one of the schematic structural diagrams of a battery balancing device provided by an embodiment of the present invention, such as figure 1 As shown, the batte...

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PUM

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Abstract

The invention discloses a battery equalization method and a battery equalization device, and the method comprises the steps of collecting the battery information of each battery in a battery pack which is electrically connected with the battery equalization device, wherein the battery information at least comprises a voltage, and the battery pack comprises a plurality of batteries which are connected in series and / or in parallel; analyzing the battery information of each battery through a battery health degree model to obtain the current capacity and the internal resistance of each battery; and determining a target equalization strategy according to the current capacity, the internal resistance and the voltage of each battery, and equalizing the battery pack according to the target equalization strategy, so that the battery pack is equalized by combining the historical data, the current capacity, the voltage and the internal resistance value of each battery, the inconsistency between the single batteries can be better improved, the charge-discharge capacity of the whole battery pack is improved, and the equalization efficiency and the equalization effect are effectively improved.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery balancing method and battery balancing equipment. Background technique [0002] As the source of power for electric vehicles, batteries can provide the required power for electric vehicles. Due to the limitation of battery energy and terminal voltage, it is usually necessary to use multiple batteries in series or in parallel to achieve higher voltage and greater energy in practical applications. Due to the highly nonlinear characteristics of batteries, there will be differences between batteries during the long-term charging and discharging process, and the inconsistency between individual batteries will increase, which will lead to a rapid decline in the capacity of the entire battery pack, and even cause individual batteries to be overcharged. Or over-discharge and damage, so the battery needs to be balanced to adjust the state of the entire battery pack. [0003] The BMS (...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44B60L58/22
CPCB60L58/22H01M10/441H02J7/0014Y02E60/10Y02T10/70
Inventor 张海莹李文普章登亮
Owner 地上铁租车(深圳)有限公司
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