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Device and method for balancing control of lithium battery

A balance control, lithium battery technology, applied in lithium batteries, charge balance circuits, secondary batteries, etc., can solve the problems of increased heat, inability to dissipate heat in time, abnormal functions of electronic equipment, etc., to prevent overheating, reduce heat, and improve stability. sexual effect

Active Publication Date: 2011-11-02
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above process, the power consumption on the shunt unit generates heat. When multiple shunt circuits are turned on at the same time, the heat generated will increase and cannot be dissipated in time, which will lead to abnormal function of electronic equipment.

Method used

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  • Device and method for balancing control of lithium battery
  • Device and method for balancing control of lithium battery
  • Device and method for balancing control of lithium battery

Examples

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Embodiment Construction

[0026] A lithium battery balance control device and method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] A lithium battery balance control device, such as figure 2 As shown, it includes a battery pack, a scheduling unit, a shunt unit and a voltage acquisition unit, and a voltage acquisition unit is arranged on one side of the single battery in the battery pack; the shunt circuit in the single battery and the shunt unit is connected in parallel; the shunt unit The voltage acquisition unit is connected to the dispatching unit respectively; a temperature acquisition unit is arranged on one side of the shunt unit; the temperature acquisition unit is connected to the dispatching unit;

[0028] The battery pack is composed of at least two single cells connected in series;

[0029] The shunt unit is used to shunt the charging current to reduce the charging speed of the single battery. The shunt unit includes at le...

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Abstract

The present invention discloses a device and a method for balancing control of a lithium battery, and belongs to the field of electrical energy storage. The device is designed to solve the problem in the prior art that an abnormity of an electric device may result from overheating of a shunt unit during the balancing process of a lithium battery set. The device for balancing control of the lithium battery comprises a battery set, a scheduling unit, the shunt unit and a voltage acquiring unit, wherein the voltage acquiring unit is arranged at one side of single batteries in the battery set; the single batteries are connected with shunt circuits in the shunt unit in parallel; the shunt unit and the voltage acquiring unit are respectively connected with the scheduling unit; a temperature acquiring unit is arranged at one side of the shunt unit; and the temperature acquiring unit is connected with the scheduling unit.

Description

technical field [0001] The invention relates to a lithium battery charging device and method, in particular to a lithium battery equalization control device and method. Background technique [0002] Lithium batteries are widely used in electronic devices due to their high energy, long cycle life, high energy density and stable working voltage. When multiple lithium batteries are connected in series to form a battery pack, it is necessary to prevent over-discharging and over-charging of single cells due to the safety and cycle performance of lithium batteries. Therefore, the capacity of the battery pack depends on the capacity of each single battery, wherein the capacity of the lithium battery is related to its voltage value. In the process of charging the battery pack, in order to make the battery pack reach the rated voltage, each single battery needs to reach the rated voltage. When a single battery has a low capacity, its voltage is also lower than other single batterie...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH01M2010/4271H01M10/441H01M10/482H01M10/052H02J7/0014Y02E60/12Y02E60/10
Inventor 刘伟刘新宇水伟
Owner HUAWEI DIGITAL POWER TECH CO LTD
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