Battery pack safety evaluation and protection method

A battery pack and safety technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of not considering protection measures, battery status evaluation, and not giving protection schemes, etc., to reduce the risk of loss of control , prevent further expansion, and reduce the effect of destruction

Pending Publication Date: 2022-02-01
WUXI SILENT ELECTRIC SYST SES TECH CO LTD
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Problems solved by technology

For example, the patent CN202110005030.1 proposes a safety assessment method by detecting battery status information and considering the actual attenuation of the battery, and measuring the health of the battery pack through four preset safety assessment information, but does not consider the corresponding protection measures; Patent CN201910333880.7 adopts particle filter-based degradation model prediction method and BP neural network method from two aspects of battery performance attenuation and possible failure, which can more accurately evaluate the performance status of the battery, but there is no hierarchical evaluation of the battery status and no Give the protection scheme under the corresponding state

Method used

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  • Battery pack safety evaluation and protection method

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Embodiment Construction

[0039] Specific embodiments of the present invention are described in detail below;

[0040] The battery pack safety assessment and protection method, the specific process is as follows:

[0041] Step 1, fault hazard parameter setting; set the frequency of battery pack faults and the degree of damage to the battery power system when the fault occurs, as follows:

[0042] Step 1-1, F level setting of fault occurrence frequency;

[0043] (1) F=1, this kind of failure will basically not occur in the battery pack, and the probability of failure is less than 5%;

[0044] (2) F=2, such failures rarely occur in battery packs, and the probability of failure is 5% to 10%;

[0045] (3) F=3, this kind of failure may occur in the battery pack, and the probability of failure is 10% to 30%;

[0046] (4) F=4, this kind of failure occurs occasionally in the battery pack, and the probability of failure is 30% to 50%;

[0047] (5) F=5, such failures often occur in battery packs, and the pro...

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Abstract

The invention discloses a battery pack safety evaluation and protection method, and the method comprises the steps of constructing a risk matrix suitable for a battery pack through setting a fault probability and a fault influence result, defining various fault conditions in a parameterized manner, and quantitatively defining the risk level of a battery pack when facing various different faults. According to the present invention, a worker on a ship can accurately measure the condition of a current battery power system in the operation process, and the damage of faults to the system is reduced; the actual response measures of the battery pack under each risk level are defined, so that the worker can quickly and effectively respond to the risk according to a measure scheme when facing a risk alarm, and the further expansion of the fault is prevented.

Description

technical field [0001] The invention relates to a new energy ship battery power system, in particular to a battery pack safety assessment and protection method. Background technique [0002] In the new energy ship battery power system, the stable charging and discharging of the battery pack plays a very important role in the smooth operation of the entire battery power system, so its safety assessment and protection during operation are imperative. For example, the patent CN202110005030.1 proposes a safety assessment method by detecting battery status information and considering the actual attenuation of the battery, and measuring the health of the battery pack through four preset safety assessment information, but does not consider the corresponding protection measures; Patent CN201910333880.7 adopts particle filter-based degradation model prediction method and BP neural network method from two aspects of battery performance attenuation and possible failure, which can more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F111/08G06F119/02
CPCG06F30/20G06F2111/08G06F2119/02
Inventor 岳凡乌云翔邵诗逸常国梅刘洋武治江徐国林
Owner WUXI SILENT ELECTRIC SYST SES TECH CO LTD
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