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Battery balancing method, device and battery system

A battery equalization and battery technology, which is applied in the electronic field, can solve the problems of battery service life and system capacity impact, achieve the effects of charging and discharging capacity and temperature balance, avoiding over-balancing, and prolonging the service life

Active Publication Date: 2019-07-09
NEUSOFT REACH AUTOMOTIVE TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If the battery system is left to operate in this condition without management, the service life of the battery and the capacity of the system will be affected

Method used

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  • Battery balancing method, device and battery system
  • Battery balancing method, device and battery system
  • Battery balancing method, device and battery system

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Embodiment Construction

[0021] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

[0022] The battery balancing method, device and battery system according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0023] figure 1 is a schematic flowchart of a battery balancing method according to an embodiment of the present application.

[0024] Such as figure 1 As shown, the battery balancing method includes:

[0025] Step 101, obtain the voltage value across the i-th battery in the battery pack, where i is an integer greater than 1 and less t...

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Abstract

The invention provides a battery equalization method and apparatus and a battery system. The battery equalization method comprises the steps of obtaining the voltage values at the two ends of the i battery in the battery pack, wherein i is an integer which is greater than 1 and less than or equal to N; N is the number of the batteries included in the battery pack; and determining the circuit access time of the i resistor which is connected with the i battery in parallel according to the relations between the voltage values and the first preset value and the second preset value. Therefore, the equalizing current of the battery can be adjusted according to the voltages at the two ends of each battery, so that the aging speed, the charging-discharging capacity, the temperature and the like of each battery in the battery pack can be equalized; and the equalizing time tends to be consistent, so that the generation of over-equalization can be avoided, and the service life of the battery pack can be prolonged.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to a battery balancing method, device and battery system. Background technique [0002] At present, most of the power batteries used in the industrial field are battery packs composed of multiple single batteries with the same performance and parameters. For a battery pack containing multiple batteries, since the parameters of the batteries cannot be completely consistent, there will be problems with the aging speed, temperature, and charge and discharge capacity of each battery, which will cause some battery cells in the battery pack to It does not match the capacity of other battery cells, which in turn leads to a capacity mismatch of the entire battery pack. [0003] When charging, other battery cells in series have not been fully charged yet, and the aging battery cell has been fully charged. When discharging, other battery cells have not been fully discharged, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/441H01M10/443H02J7/0016Y02E60/10
Inventor 陈明亮张晓璐宋春东
Owner NEUSOFT REACH AUTOMOTIVE TECH SHANGHAI CO LTD
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