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A detection method and system based on cascade utilization of battery packs

A detection method and a technology of a battery pack, which are applied in the detection field, can solve problems such as long detection time, and achieve the effect of reducing detection time

Active Publication Date: 2019-12-24
JIANGSU PYLON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the cascade utilization battery pack enters the working state again, it is necessary to perform corresponding detection on the cascade utilization battery pack to judge its health status. The voltage, capacity and other data information recorded during the charging and discharging cycle, and the internal resistance state of the cascade utilization battery pack is calculated according to the voltage and capacity data, and the health status of the cascade utilization battery pack is judged based on the above information. Use the battery pack to do a complete charge and discharge cycle, and the detection takes a long time

Method used

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  • A detection method and system based on cascade utilization of battery packs
  • A detection method and system based on cascade utilization of battery packs
  • A detection method and system based on cascade utilization of battery packs

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Embodiment 1

[0073] like figure 2 As shown, the present invention provides a detection method based on cascade utilization of battery packs, including;

[0074] Step S110, after the secondary use of battery packs into groups, use a constant current signal to process the charging and discharging of the battery packs in the pre-set time through a constant current signal, and generate charging data and discharge data output; usually the pre-set time is relatively short Short, it can be set according to the actual application, but it is necessary to ensure that the SOC (State of Charge battery charge) of the battery pack is approximately constant within the preset time. The preset time includes charging preset time and discharging preset time. Further, the constant current signal matches the maximum charging current of the cascade utilization battery pack. The constant current signal may be 100A.

[0075] like image 3 a shows a schematic diagram of the constant current charging curve of ...

Embodiment 2

[0083] In the first embodiment above, the charging time and discharging time are relatively short, and the measurement may be inaccurate. Therefore, this embodiment provides a detection method based on cascaded utilization of battery packs with high detection accuracy.

[0084] Step S210, after the step-by-step battery packs are grouped for the second time, use a constant current signal to charge and discharge the step-up use battery packs at a pre-set time, and output charging data and discharge data; wherein, the pre-set The time may be a first predetermined time, a second predetermined time, a third predetermined time, or a fourth predetermined time;

[0085] Step S220, calculating and forming a charging resistor and a discharging resistor according to the charging data and the discharging data;

[0086] Step S230, judging whether the charging resistance matches the standard charging resistance threshold and whether the discharging resistance matches the standard dischargin...

Embodiment 3

[0151] like Figure 9 As shown, the present invention further provides a detection system based on cascaded utilization of battery packs, which includes;

[0152] Timing unit, which forms a prefabricated time according to the user's settings;

[0153] The constant current device is used to process the charging and discharging of the cascaded battery packs at the prefabricated time through a constant current signal after the cascaded battery packs are grouped for the second time, and output charging data and discharging data;

[0154] A calculation unit, calculating and forming a charging resistance and a discharging resistance according to the charging data and the discharging data;

[0155] A judging unit, judging whether the charging resistor matches the standard charging resistor threshold, whether the discharging resistor matches the standard discharging resistor, and outputs a health status judging result for identifying the cascaded battery pack.

[0156] As a further ...

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Abstract

The invention belongs to the detection technical field and relates to an echelon-use battery pack-based detection method and system. The echelon-use battery pack-based detection method includes the following steps that: after secondary grouping is performed on a echelon-use battery pack, charging and discharging processing is performed on the echelon-use battery pack through a constant current signal, so that charging data and discharging data are formed, and the charging data and discharging data are outputted, calculation is performed based on the charging data and discharging data, so that charging resistance and discharge resistance can be formed and outputted; and whether the charging resistance is matched with a standard charging resistance threshold value is determined, and whether the discharging resistance is matched with a standard discharging resistance threshold value is determined, a judgment result is formed, and the status of health of the echelon-use battery pack is judged according to the judgment result.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a detection method and system based on cascaded utilization of battery packs. Background technique [0002] The cascading utilization of power lithium batteries means that when the capacity of power lithium batteries cannot meet the continued use of electric vehicles after one year of use, the battery pack is disassembled into battery modules or even batteries, which can be screened by level according to the elimination They are respectively used in communication power supply, solar street lamps, and energy storage fields so that the power lithium battery can continue to exert waste heat to improve energy utilization efficiency. [0003] The existing cascaded utilization method of the residual energy of the power battery for electric vehicles mainly includes the following steps: figure 1 As shown, S1, dismantling the waste power battery pack; S2, performing performance testing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/385G01R31/396
CPCG01R31/382G01R31/396
Inventor 陈佰爽施璐李番军李杰
Owner JIANGSU PYLON TECH CO LTD