Control method and control system for voltage consistency of sodium ion battery pack

A technology of a control system and a control method, which is applied to battery/fuel cell control devices, battery circuit devices, arrangement of multiple synchronous batteries, etc., can solve problems such as voltage inconsistency, improve cycle life, increase actual use capacity, The effect of resolving voltage inconsistency

Active Publication Date: 2021-01-29
溧阳中科海钠科技有限责任公司 +1
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a control method and control system for the voltage consistency of a sodium ion battery pack, which can effectively solve the problem of voltage inconsistency between the monomers of the sodium ion battery pack in the process of recycling, and improve the actual use capacity and capacity of the battery pack. Cycle life

Method used

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  • Control method and control system for voltage consistency of sodium ion battery pack
  • Control method and control system for voltage consistency of sodium ion battery pack

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Embodiment Construction

[0056] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0057] The method for controlling the voltage consistency of the sodium-ion battery pack provided in this embodiment is used to control the voltage consistency of the single cells in the sodium-ion battery pack, especially the voltage consistency control after the sodium-ion battery pack has been used for a period of time.

[0058] Its method steps are as follows: figure 1 shown, including:

[0059] Step 101, connect the sodium ion battery pack to the control system, and the control system performs system initialization and self-test processing.

[0060] First connect the sodium-ion battery pack to the control system. After starting the control system, the system communication unit performs a self-test. If the communication is abnormal, try to connect again. If the communication is normal, the system initialization and ...

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Abstract

The embodiment of the present invention relates to a control method and control system for the voltage consistency of a sodium-ion battery pack. By judging the voltage difference of the single cells of the sodium-ion battery pack, it is determined whether consistency control is required. The controlled battery pack discharges all the power of the sodium-ion battery pack in one or more steps, and then controls the charging current to charge the sodium-ion battery pack, and then stops charging to a certain voltage, thereby effectively solving the problem of the sodium-ion battery pack being recycled. The problem of voltage inconsistency between monomers can improve the actual use capacity and cycle life of the battery pack.

Description

technical field [0001] The invention relates to the technical field of secondary batteries, in particular to a control method and a control system for voltage consistency of a sodium ion battery pack. Background technique [0002] Lithium-ion batteries are widely used in people's lives, but with the gradual consumption of limited lithium resources, the price of lithium is gradually increasing. Seeking alternatives to lithium-ion batteries has become an important research direction for power batteries or energy storage batteries. As an alkali metal element similar to lithium, sodium has the advantages of abundant resources, low price, and similar intercalation mechanism. The research on room temperature sodium-ion batteries has attracted more and more attention. Substantial progress has been made in room temperature Na-ion batteries in recent years. [0003] Limited to the voltage and capacity of single cells, hundreds or even thousands of single cells must be connected in s...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02J7/00B60L58/22
CPCB60L58/22H02J7/0016Y02T10/70
Inventor康利斌唐堃胡勇胜
Owner溧阳中科海钠科技有限责任公司