CN-121980584-A - Lithium battery information processing method, equipment and storage medium

CN121980584ACN 121980584 ACN121980584 ACN 121980584ACN-121980584-A

Abstract

A lithium battery information processing method, equipment and storage medium relate to the technical field of lithium batteries and comprise the steps of obtaining inherent identity information and delivery performance parameter sets of a lithium battery core, carrying out correlation analysis and entropy evaluation on the performance parameter sets, dynamically selecting a differential compression strategy to compress according to the performance parameter sets, carrying out lightweight encryption on compressed data and identity information to generate a data block with physical meaning, writing the data block into a special storage chip embedded in a lithium battery core body, reading current key state parameters of the battery core from the special storage chip after an external access request is received, carrying out security state evaluation and permission verification by combining the current key state parameters and credentials attached to the access request, and selectively activating decryption of corresponding ciphertext segments in the data block and decompression reconstruction flow based on a parameter correlation model according to permission level passing verification. Deep binding and trusted tracing of data and physical entities are realized.

Inventors

ZHANG HUI
Zhu Ruida
Luo Ruiqiao
HU ZHIHAN
FENG GUIQING
LI TANXIN

Assignees

深能北方能源控股有限公司
深圳市盛路物联通讯技术有限公司
深能源(深圳)创新技术有限公司

Dates

Publication Date: 20260505
Application Date: 20260108

Claims (10)

1. The lithium battery cell information processing method is characterized by comprising the following steps of: acquiring inherent identity information and delivery performance parameter sets of a lithium battery core; Carrying out association analysis and entropy evaluation on the performance parameter set by using a parameter association model established based on a battery cell chemical system and a topological structure, and dynamically selecting a differential compression strategy to compress according to the association analysis and the entropy evaluation; carrying out lightweight encryption on the compressed data and the identity information to generate a data block with physical meaning; Writing the data block into a special storage chip embedded in the lithium battery core body, wherein the writing operation is triggered when the battery core is in a nominal standing voltage window, and the environmental state fingerprint acquired during writing is embedded in the written data block; After receiving an external access request, reading current key state parameters of the battery core from the special memory chip, and carrying out security state evaluation and permission verification by combining the current key state parameters and a certificate attached to the access request; And selectively activating decryption of corresponding ciphertext segments in the data block and decompression reconstruction flow based on the parameter association model according to the authority level passing the verification.
2. The method of claim 1, wherein the data blocks with physical meaning are in a hierarchical flexible packaging structure, the hierarchical flexible packaging structure comprises an outer packaging frame containing a digest value for checking data integrity and the environmental state fingerprint, and an inner layer load, the structure of which is dynamically organized according to the entropy evaluation result and at least comprises an encrypted static identity area and a dynamic performance parameter area which is grouped according to inter-parameter relevance strength and differentially compressed and encoded.
3. The method according to claim 2, wherein the grouping and differential compression coding according to the inter-parameter correlation comprises using differential coding based on model prediction for the parameter group determined to be strongly correlated in the parameter correlation model, and using independent lossless compression coding suitable for the data type for the weakly correlated or independent parameter.
4. The method of claim 1, wherein the dedicated memory chip includes a read-only memory area and a rewritable memory area, wherein the data block is solidified in the read-only memory area, and wherein the method further comprises: Acquiring process parameters and state transition events of the lithium battery cell in real time or at fixed time through a sensor interface integrated with the special memory chip or a direct channel of the battery management system; and the process parameters and the state transition events are packaged and written into the rewritable storage area according to the relevance between the process parameters and the inherent performance parameter set to form a life cycle log associated with the read-only storage area data.
5. The method of claim 4, wherein writing data into the re-writable memory area is managed using an adaptive cycling strategy based on a cell health state phase, wherein cycling coverage of a fixed period is used during a phase of steady cell health state decay rate, and wherein data writing frequency is increased and data is entered into a protected memory block during a characteristic phase of changing the cell health state decay rate.
6. The method of claim 1, wherein performing the security state assessment includes opening only access to the first level of authority if the current critical state parameter indicates that the cell is in an abnormal state, and introducing an additional verification factor based on the state into the decryption flow.
7. The method according to claim 1 or 6, wherein the selectively activating decryption of corresponding ciphertext segments in a data block and decompression reconstruction based on the parameter association model according to the verified authority levels comprises controlling not only the accessible data range but also the recovery accuracy of the data for different authority levels, and providing only the summary value of key parameters or the obfuscated result for a level smaller than the second level authority.
8. A lithium battery information processing apparatus, comprising: The acquisition module is used for acquiring inherent identity information and delivery performance parameter sets of the lithium battery core; The evaluation and compression module is used for carrying out association analysis and entropy evaluation on the performance parameter set by utilizing a parameter association model established based on a battery cell chemical system and a topological structure, and dynamically selecting a differential compression strategy to compress according to the association analysis and entropy evaluation; The encryption module is used for carrying out lightweight encryption on the compressed data and the identity information to generate a data block with physical meaning; the writing module is used for writing the data block into a special storage chip embedded in the lithium battery core body, wherein the writing operation is triggered when the battery core is in a nominal standing voltage window, and the environmental state fingerprint acquired during writing is embedded in the written data block; the verification module is used for reading the current key state parameters of the battery core from the special memory chip after receiving the external access request, and carrying out security state evaluation and authority verification by combining the current key state parameters and the certificates attached to the access request; and the activation module is used for selectively activating decryption of corresponding ciphertext segments in the data block and decompression reconstruction flow based on the parameter association model according to the authority level passing the verification.
9. A device for lithium battery information processing, characterized by comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 7 when the computer program is executed by the processor.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any one of claims 1 to 7.

Description

Lithium battery information processing method, equipment and storage medium Technical Field The application belongs to the technical field of lithium battery management, and particularly relates to a lithium battery information processing method, equipment and a storage medium. Background With the rapid development of industries such as new energy automobiles, large-scale energy storage and the like, the lithium battery is used as a core energy component, and the quality traceability and the safety management of the whole life cycle are important. Currently, in order to realize traceability of cell data, a method generally adopted by the industry is to assign an independent identification code (such as a two-dimensional code or a serial number) to each cell, associate the identification code with detailed performance parameters, production data and the like, and store the identification code in a cloud or supply chain database in a centralized manner. However, the split architecture of binding the identity mark with the physical entity and storing the key data in the cloud has a fundamental core defect that the data is seriously unhooked from the physical entity, so that the trusted tracing chain is fragile. During lengthy periods of complex production, transportation, integration, use, or even recycling of the cells, once the background database is inaccessible (e.g., network disruption, system failure), data is tampered with maliciously, or the identification code is destroyed, the association between the cells and their complete historical data archive will be broken thoroughly. This makes independent verification of the cell state, accurate attribution of safety incidents, and evaluation of value at echelon utilization extremely difficult or even impossible. Therefore, how to implement tamper-resistant, highly-trusted and efficient autonomous storage and verification of key data on the battery core body becomes a core technical problem to be solved in the field. Disclosure of Invention In view of the above, the embodiments of the present application provide a method, an apparatus, and a storage medium for processing lithium battery information, which are capable of implementing deep binding and trusted tracing of data and physical entities by reconstructing a storage paradigm of cell data and generating and curing identity information with description in a body chip. The embodiment of the application provides a lithium battery information processing method, which comprises the following steps: acquiring inherent identity information and delivery performance parameter sets of a lithium battery core; Carrying out association analysis and entropy evaluation on the performance parameter set by using a parameter association model established based on a battery cell chemical system and a topological structure, and dynamically selecting a differential compression strategy to compress according to the association analysis and the entropy evaluation; carrying out lightweight encryption on the compressed data and the identity information to generate a data block with physical meaning; Writing the data block into a special storage chip embedded in the lithium battery core body, wherein the writing operation is triggered when the battery core is in a nominal standing voltage window, and the environmental state fingerprint acquired during writing is embedded in the written data block; After receiving an external access request, reading current key state parameters of the battery core from the special memory chip, and carrying out security state evaluation and permission verification by combining the current key state parameters and a certificate attached to the access request; And selectively activating decryption of corresponding ciphertext segments in the data block and decompression reconstruction flow based on the parameter association model according to the authority level passing the verification. In an embodiment, the data block with the physical meaning adopts a layered flexible packaging structure, wherein the layered flexible packaging structure comprises an outer packaging frame, an inner load and a dynamic performance parameter area, wherein the outer packaging frame comprises a summary value for checking data integrity and the environmental state fingerprint, and the inner load is dynamically organized according to the entropy evaluation result and at least comprises an encrypted static identity area and a dynamic performance parameter area which is grouped according to the correlation strength among parameters and differentially compressed and encoded. In one embodiment, the grouping and differential compression coding according to the inter-parameter relevance comprises the steps of adopting differential coding based on model prediction for the parameter group judged to be strongly relevant in the parameter relevance model, and adopting independent lossless compression coding suitable for the data typ