Detection method of lithium ion battery for hybrid power ship

A technology of lithium-ion batteries and detection methods, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., to achieve the effect of good power supply

CN104237800AInactive Publication Date: 2014-12-24SHANGHAI MARITIME UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-12-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a detection method of a lithium ion battery for a hybrid power ship. The detection method comprises the following steps of S1, acquiring the specific energy and the energy density of the lithium ion battery to be detected; S2, judging whether the specific energy and the energy density are larger than or equal to corresponding preset threshold values, and executing the S3 if the specific energy and the energy density are larger than or equal to the corresponding preset threshold values; S3, acquiring the electrical charge efficiency and the energy efficiency of the lithium ion battery to be detected; S4, judging whether the electrical charge efficiency and the energy efficiency are larger than or equal to corresponding preset threshold values, and executing the S5 if the electrical charge efficiency and the energy efficiency are larger than or equal to the corresponding preset threshold values; S5, acquiring the charging power and the discharging power of the lithium ion battery to be detected; S6, judging whether the charging power and the discharging power are larger than or equal to corresponding preset threshold values, determining that the lithium ion battery to be detected is qualified if the charging power and the discharging power are larger than or equal to the corresponding preset threshold values, and completing the test step. By means of the detection method, the using state and the working performance of the lithium ion battery are monitored at regular intervals, the aging and damaged battery can be replaced conveniently in time, and the lithium ion battery for the hybrid power ship is controlled within a safety range so that the hybrid power ship can work in a safe state all the time.
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Description

technical field

[0001] The invention relates to the technical field of lithium-ion batteries, in particular to a detection method for lithium-ion batteries used in hybrid ships. Background technique

[0002] As the global climate continues to deteriorate and fossil fuels are exhausted, human beings are constantly looking for new energy sources to replace traditional fossil fuels. Especially in the means of transportation, in the past ten years, various new types of electric mopeds that use electric energy as an alternative to traditional energy sources, as well as gasoline-electric hybrid / pure electric vehicles and other means of transportation have emerged. As a means of water transportation, ships are also actively seeking breakthroughs in their own power systems during this fuel crisis. Among them, oil-electric hybrid ships have attracted widespread attention for their energy-saving and clean features.

[0003] Lithium-ion batteries have become the preferred energy stora...

Examples

Embodiment

[0086] Embodiment: adopt the lithium iron phosphate battery (LiFePO4) sample that domestic manufacturer produces, basic information is as follows: rated capacity 20Ah, rated voltage 3.2V, the maximum charge voltage that allows is 3.65V, and minimum discharge voltage is 2.0V (cut-off voltage, 62.5% of the rated voltage), using a square stainless steel shell with a winding structure inside, the weight of the battery is 0.695 kg, and the volume is 0.314 liters. The test equipment adopts the FTV series battery tester of Bitrode Company, and the control software adopts its supporting VisuaLCN.

[0087]The target value set according to industry regulations is 64km pure electric mileage PHEB power consumption is 11.6kWh, which is equivalent to 181Wh per kilometer. Combined with the set PHEB requirements and battery cell information, the PHEB battery pack using this type of lithium iron phosphate battery is calculated. The data parameters (see Table 1) are compared with the target val...