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Lithium power battery clustering system and management method thereof

A power battery and cluster system technology, applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve problems such as overcharging or overdischarging, unbalanced power output, damage, etc., and achieve the effect of high performance

Inactive Publication Date: 2012-12-05
陈旭东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the working process of series lithium batteries, due to individual differences (such as internal resistance, output voltage, etc.), the power output is unbalanced
This imbalance causes the low-quality batteries in the series circuit to have a large working loss, and under extreme conditions, it may cause fatal overcharge or overdischarge, which seriously affects the life of lithium batteries.
[0004] At present, the single charge and discharge experiments of lithium batteries have proved that the charge and discharge times of single lithium batteries can reach 3000 times or more under the working conditions (mainly limit the charge and discharge current and voltage), while in the case of series connection, lithium batteries The battery pack generally can only work around 500 cycles
Damage caused by imbalance is the most important factor affecting battery life

Method used

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  • Lithium power battery clustering system and management method thereof
  • Lithium power battery clustering system and management method thereof

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Embodiment Construction

[0012] The structure and management principles of the lithium power battery cluster system of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] refer to Figure 1-Figure 2 , a lithium power battery cluster system, including a central controller and a plurality of lithium battery modules connected in parallel, each lithium battery module includes a plurality of single lithium batteries BT in series, and each single lithium battery BT is configured with a The single lithium battery BT is connected to the relay of the series circuit, and the input control terminals 2 and 4 of each relay are connected to the module processor, and the positive electrode of the series circuit of the lithium battery BT is connected in series with the VMOS transistor Q1 and the inductor L in sequence to serve as a lithium battery. The positive pole output of the battery module, the negative pole of the series circuit of the lithium battery ...

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Abstract

The invention relates to a lithium power battery clustering system and a management method thereof, which can be used for the discharging and charging control of a power lithium battery pack. The system comprises a central controller and plural parallel lithium battery modules, wherein each lithium battery module comprises plural serial monomer lithium batteries; each monomer lithium battery is configured with a relay which causes the monomer lithium battery to be accessed into a serial loop; and the input control end of each relay is connected with a module processor. Each monomer lithium battery is accessed into the circuit at the most proper time according to state data collected by the module processor and the order of the central controller; and the discharging process for the lithium battery to output outwards and the charging process for adsorbing external circuit energy can be realized by a bidirectional current path so as to obtain the optimal working state of the monomer battery and prolong the service life of the battery to be almost as long as that of the monomer battery.

Description

technical field [0001] The invention relates to a lithium power battery cluster system and a management method thereof. Background technique [0002] Compared with traditional batteries, lithium batteries have the advantages of large capacity-to-volume ratio, multiple charge-discharge cycles, and no need to consider the placement direction of solid-state batteries. At present, lithium batteries are gradually becoming the first choice for batteries in systems that require strong electric power. Due to its own structural characteristics, it is difficult for lithium batteries to achieve high voltage and high current output. That is to say, a single lithium battery cannot output large power. At present, a single lithium battery is mainly used in mobile phones, small electric tools, etc. [0003] In order to give full play to the advantages of lithium batteries, lithium batteries must be connected in parallel and in series to form a battery pack to achieve the required power req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/44
CPCY02E60/12Y02E60/10
Inventor 陈旭东林榆滨
Owner 陈旭东
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