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Data storage and reading method

A battery management system and data storage technology, which is applied in the field of data storage and reading method improvement solutions, can solve problems such as poor reliability, inability to data, and recovery, so as to improve anti-destructive performance, improve data reliability, and ensure correctness Effect

Active Publication Date: 2013-11-20
HUIZHOU EPOWER ELECTRONICS
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Problems solved by technology

[0004] Existing methods for saving data in EEPROM are relatively simple. One is to save only one piece of data. After the data is destroyed, the data cannot be obtained, and the data cannot be recovered by other methods, and its reliability is poor.
Another method is to save two copies of data, one original and one copy. When the data of the original copy is consistent when reading, the data is considered correct. When the data is inconsistent, it is impossible to distinguish which data is wrong, and it is impossible to recover the data.

Method used

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Embodiment Construction

[0027] In order to facilitate the understanding of those skilled in the art, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0028] The data storage and reading method of the electric vehicle battery management system disclosed in this embodiment adopts the method of multi-redundant backup and sequential writing to store data to ensure the correctness of data storage, and when some data is damaged, Using multiple backup data to compare and read the correct data, and effectively recover the wrong data, improves the reliability of the electric vehicle data.

[0029] The method includes a data storage step and a data reading step, as attached figure 1 As shown, the data storage steps are:

[0030] (11) Separate four districts a, b, c, and d on the memory in advance, wherein a district is used to store the original copy of data, and three districts b, c, and d are used to store data copies;

[0031]...

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Abstract

The invention relates to a data storage and reading method in an improvement scheme, which includes a data storage step and a data reading step. The data storage and reading method is used for storing, reading and recovering data by means of multi-redundant backup and successive writing, providing a multi-backup mechanism on a storage, ensuring reliable writing of the data and improving data reliability and destruction resistance. When the data are read, even if parts of the data are destructed, the destructed data can be recovered by the aid of normal data, so that accuracy of data reading is ensured.

Description

technical field [0001] The invention relates to an improvement scheme of a data storage and reading method. Background technique [0002] An EEPROM is often used in a battery management system for data storage, and there is usually only one EEPROM in the battery management system. All important control parameters and operating data of the battery management system must be stored in this memory. During the initialization process of the battery management system, it is necessary to read the initialization parameters from the EEPROM and read the previously saved data. During the operation of the battery management system In the process, data such as the remaining power of the battery and fault information need to be saved in real time. The stable and reliable operation of the battery management system requires these parameters and data to be guaranteed, so the reliability and recoverability of data storage are particularly important. [0003] The data of the battery managemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14G06F13/16
Inventor 刘飞阮旭松文锋张金灵
Owner HUIZHOU EPOWER ELECTRONICS
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