CN112865219A - Automobile lithium battery dynamic charging protection system based on knowledge graph and 5G technology - Google Patents
Automobile lithium battery dynamic charging protection system based on knowledge graph and 5G technology Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/30—Information retrieval; Database structures therefor; File system structures therefor of unstructured textual data
- G06F16/36—Creation of semantic tools, e.g. ontology or thesauri
- G06F16/367—Ontology
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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Abstract
According to the automobile lithium battery dynamic charging protection system based on the knowledge graph and the 5G technology, charging information is input into the second self-query knowledge graph through the second self-query knowledge graph, the second charging threshold voltage can be rapidly queried and obtained, the second charging threshold voltage is more accurate due to the fact that the incidence relation of the knowledge graph is more accurate compared with the conventional corresponding relation, and meanwhile, the incidence relation of the knowledge graph comprises the correlation between charging information entities, therefore, due to the fact that the charging information changes, the second charging threshold voltage can be dynamically changed and adjusted along with the charging information, accuracy is higher, and the influence of the self-loss condition of the battery can be eliminated through the knowledge graph; meanwhile, the knowledge graph is coupled by applying a 5G technology, so that the query efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of dynamic protection of battery charging, in particular to a dynamic charging protection system of an automobile lithium battery based on a knowledge graph and a 5G technology.
Background
At present, batteries (such as lithium batteries of mobile phones, lithium batteries of automobiles, lead-acid batteries, and the like) generally have a charging protection function and a quick charging function, but the current charging scheme generally adopts the quick charging function to charge the batteries to about 80%, and then adopts a slow charging mode to perform charging protection, so that the charging protection can be performed on the rechargeable batteries.
But on the one hand, the functions only carry out relatively rigid protection on the rechargeable battery, the loss of the rechargeable battery is not considered, the charging protection error is relatively large, and the battery cannot be effectively charged and protected, on the other hand, for the automobile lithium battery, the charging pile is required to be adopted for charging, the method increases the burden of the charging pile, particularly for the current popular charging pile, the charging pile has the electricity storage function, when the automobile lithium battery is charged, the charging voltage needs to be adjusted at any time, the charging power is adjusted at any time, the charging pile is undoubtedly damaged, the current charging protection is not complete fundamentally, the risk of the charging protection for the automobile lithium battery is only transferred to a charging pile manufacturer from a consumer end, and the problem of the charging protection is not solved.
Disclosure of Invention
To solve the problems in the prior art, an embodiment of a first aspect of the present invention provides a battery charging dynamic protection method, including:
acquiring charging information of a battery, wherein the charging information comprises residual recyclable time data, charging time data and charging duration information each time;
inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
in the process that the battery is charged by a charging power supply, if the charging voltage of the battery is lower than the first charging threshold voltage, triggering to generate a first pulse current, and if the charging voltage of the battery reaches the second charging threshold voltage, triggering to generate a second pulse current; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the battery, and the second pulse current is used for triggering the energy storage device to be coupled with the charging power supply.
In a preferred embodiment, further comprising: establishing the second self-query knowledge-graph, establishing the first self-query knowledge-graph.
In a preferred embodiment, said establishing said second self-query knowledge-graph comprises:
generating associated data of a second charging threshold voltage and charging information according to charging information of a plurality of different batteries in the same type and a first verified value of the corresponding second charging threshold voltage;
establishing the association relation according to the association data, setting the second charging threshold voltage, the remaining recyclable time data in the charging information, the charging time data and the charging time length information as entities, and generating a second self-query knowledge graph by combining the association relation and the entities; wherein the content of the first and second substances,
the first empirical value is obtained based on evaluation data of the first expert model.
In a preferred embodiment, said establishing said first self-query knowledge-graph comprises:
generating associated data of the first charging threshold voltage and the charging information according to charging information of a plurality of different batteries in the same type and a second empirical value of the corresponding first charging threshold voltage;
establishing the association relation according to the association data, setting the first charging threshold voltage, the remaining recyclable time data, the charging time data and the charging duration information in the charging information as entities, and generating a second self-query knowledge graph by combining the association relation and the entities; wherein the content of the first and second substances,
the second empirical value is obtained based on the evaluation data of the second expert model.
In a preferred embodiment, further comprising:
acquiring first fraction data corresponding to the total charging time from an expert database by combining a third expert model;
determining a corresponding first weight factor according to the first scoring data in combination with a preset corresponding relation table of the first scoring data and the first weight factor;
and correcting the output result of the first self-query knowledge graph by using the first weight factor.
In a preferred embodiment, further comprising:
acquiring second grading data corresponding to the total charging time from the expert database by combining a fourth expert model;
determining a corresponding second weight factor according to the second scoring data in combination with a preset corresponding relation table of the second scoring data and the second weight factor;
and correcting the output result of the second self-query knowledge graph by using the second weighting factor.
In a preferred embodiment, the battery dynamic protection method further includes:
generating a high-temperature inhibition protection coefficient according to the current charging environment temperature;
modifying the first charging threshold voltage and/or the second charging threshold voltage output by the first self-query knowledge map in combination with the high temperature rejection protection factor.
An embodiment of a second aspect of the present invention provides a battery charging dynamic protection apparatus, including:
the charging information acquisition module is used for acquiring charging information of the battery, wherein the charging information comprises residual recyclable time data, charging time data and charging duration information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the battery reaches the second charging threshold voltage in the charging process of the battery through a charging power supply; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the battery, and the second pulse current is used for triggering the energy storage device to be coupled with the charging power supply.
In a preferred embodiment, further comprising:
and the knowledge map model generation module is used for establishing the second self-query knowledge map.
In a preferred embodiment, further comprising:
the scoring data acquisition module is used for acquiring first scoring data corresponding to the total charging time from the expert database by combining with a third expert model;
the weight factor generation module is used for determining a corresponding first weight factor according to the first scoring data and a preset corresponding relation table of the first scoring data and the first weight factor;
and the result correction module corrects the output result of the first self-query knowledge graph by using the first weight factor.
An embodiment of a third aspect of the present invention provides a dynamic charging protection system for an automotive lithium battery, including: battery dynamic protection device and car charging pile, wherein battery charging dynamic protection device includes:
the charging information acquisition module is used for acquiring charging information of the automobile lithium battery from an automobile BMS system, wherein the charging information comprises residual recyclable time data, charging time data and charging time information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the automobile lithium battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the automobile lithium battery reaches the second charging threshold voltage in the process that the automobile lithium battery is charged through the automobile charging pile; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the automobile lithium battery, and the second pulse current is used for triggering the energy storage device to be coupled with the automobile charging pile.
The embodiment of the fourth aspect of the invention provides an automobile lithium battery dynamic charging protection system based on a knowledge graph and a 5G technology, which comprises the following steps: battery dynamic protection device and car charging pile, wherein battery charging dynamic protection device includes:
the charging information acquisition module is used for acquiring charging information of the automobile lithium battery from an automobile BMS system through a 5G network, wherein the charging information comprises residual recyclable time data, charging time data and charging time length information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the automobile lithium battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the automobile lithium battery reaches the second charging threshold voltage in the process that the automobile lithium battery is charged through the automobile charging pile; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the automobile lithium battery, and the second pulse current is used for triggering the energy storage device to be coupled with the automobile charging pile.
Advantageous effects
According to the technical scheme, the automobile lithium battery dynamic charging protection system based on the knowledge graph and the 5G technology firstly generates a high charging threshold voltage (a second charging threshold voltage) and a low charging threshold voltage (a first charging threshold voltage) through the charging information of a battery, wherein the low charging threshold voltage corresponds to rapid charging, the high charging threshold voltage corresponds to an overshoot interval, further, when the charging voltage of the battery is in a lower level, the charging can be supplemented through discharging of an energy storage device, the charging speed is improved, when the charging voltage of the battery is in a higher level, the charging electric quantity of a charging power supply can be shared by using the energy storage device for charging, further, the loss of the battery due to rapid charging of a final end charging link is avoided, the effect of dynamic balance charging is achieved, and meanwhile, the charging threshold voltage of the invention is dynamically generated by using a self-checking knowledge graph based on the charging information, the battery protection device can be adjusted according to the loss condition of the battery, and can be dynamically attached to the actual condition of each battery, so that dynamic protection is more accurate and adaptive, and the service life of the battery is greatly prolonged. Meanwhile, charging information is input into the second self-query knowledge graph through the second self-query knowledge graph, the second charging threshold voltage can be rapidly queried and obtained, the incidence relation of the knowledge graph is more accurate compared with the conventional corresponding relation, the second charging threshold voltage is more accurate, meanwhile, the incidence relation of the knowledge graph comprises the correlation between charging information entities, the second charging threshold voltage can be dynamically changed and adjusted along with the change of the charging information, the accuracy is higher, the influence of the loss condition of the battery can be eliminated through the knowledge graph, the first charging threshold voltage can be dynamically changed and adjusted along with the change of the charging information, the accuracy is higher, and the influence of the loss condition of the battery can be eliminated through the knowledge graph.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating a dynamic protection method for battery charging according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a dynamic protection apparatus for battery charging according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery charging dynamic protection system according to an embodiment of the present invention;
fig. 4 is a schematic structural example of a topology structure of a bayesian network in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a first embodiment of the present invention provides a battery charging dynamic protection method, including:
s101: acquiring charging information of a battery, wherein the charging information comprises residual recyclable time data, charging time data and charging duration information each time;
s102: inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
s103: in the process that the battery is charged by a charging power supply, if the charging voltage of the battery is lower than the first charging threshold voltage, triggering to generate a first pulse current, and if the charging voltage of the battery reaches the second charging threshold voltage, triggering to generate a second pulse current; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the battery, and the second pulse current is used for triggering the energy storage device to be coupled with the charging power supply.
According to the technical scheme, the battery charging dynamic protection method provided by the invention comprises the steps of firstly generating a high charging threshold voltage (a second charging threshold voltage) and a low charging threshold voltage (a first charging threshold voltage) through the charging information of the battery, wherein the low charging threshold voltage corresponds to quick charging, the high charging threshold voltage corresponds to an overshoot interval, further discharging and supplementing charging can be carried out through an energy storage device when the charging voltage of the battery is in a lower level, the charging speed is improved, when the charging voltage of the battery is in a higher level, the charging electric quantity of a charging power supply can be shared by using the energy storage device for charging, further, the loss of the battery caused by quick charging in the last terminal charging link is avoided, the effect of dynamic balance charging is achieved, meanwhile, the charging threshold voltage of the battery is dynamically generated based on the charging information, and can be adjusted according to the self loss condition of the battery, the battery protection device can dynamically fit the actual condition of each battery, so that dynamic protection is more accurate and adaptive, and the service life of the battery is greatly prolonged.
Furthermore, the second charging threshold voltage is obtained based on a second self-query knowledge graph, the second self-query knowledge graph can represent the association relation between the remaining recyclable time data, the charging time data and the charging time length information and the second charging threshold voltage, the second charging threshold voltage is searched by inputting the charging information, the speed of obtaining the second charging threshold voltage can be greatly improved, the charging continuity and the charging real-time performance are guaranteed, and the first charging threshold voltage is similar to the first charging threshold voltage.
Specifically, in the implementation process of the present invention, when charging is started, the charging power supply charges the battery of the present invention with a constant current, and since in the initial stage of charging, rapid charging can be performed, at this time, since the charging voltage of the battery is lower than a second threshold voltage (for example, for a battery with a rated voltage of 48v, the second threshold voltage is 10v), a first pulse current is triggered, the first pulse current is used for triggering an energy storage device to be coupled to the battery, for example, the first pulse current triggers a switch to be turned off, the switch is coupled between the energy storage device and the battery, and thus the energy storage device and the battery can be disconnected and connected through on and off control of the switch.
When the energy storage device is coupled with the battery, because the energy storage device reaches saturation (namely the energy storage device is gradually in a charged state) under the second charging threshold voltage when the energy storage device is charged at the previous time, after the energy storage device is coupled with the battery, the energy storage device can serve as a supplementary power supply to feed the battery, and the charging speed of the battery is improved.
It can be understood that the present charging voltage of the battery in the present invention is related to the internal electric quantity of the battery and is positively correlated, when the battery is charged, the present charging voltage gradually increases from 0 to the maximum saturation voltage of the battery, and the present charging voltage may have one or more different terms in the industry, but the meanings thereof are consistent and are all parameters that can represent the present electric quantity, which is not described in the present invention.
When the current charging voltage of the battery reaches the second charging threshold voltage, the battery is already in a 'large-capacity' state, the battery can be damaged by quick charging at the moment, the prior art realizes the purpose by setting charging power (reducing the charging power), and then certain burden is caused to the charging source, especially for the automobile charging pile.
When the battery reaches the second charging threshold voltage, the second pulse current can be triggered, the energy storage device can be triggered to be coupled with the charging power supply by the second pulse current, and it can be understood that the voltage of the energy storage device is smaller than the voltage of the charging power supply, so that the energy storage device is in a charged state, the charging power supply charges the energy storage device, on one hand, the energy storage device shares the voltage of the charging power supply, so that the current charging power of the battery is reduced, on the other hand, the charging power supply is not required to perform power switching, so that the charging power supply is protected.
In a preferred embodiment, further comprising: establishing the first self-query knowledge-graph.
In a preferred embodiment, said establishing said second self-query knowledge-graph comprises:
generating associated data of a second charging threshold voltage and charging information according to charging information of a plurality of different batteries in the same type and a first verified value of the corresponding second charging threshold voltage;
establishing the association relation according to the association data, setting the second charging threshold voltage, the remaining recyclable time data in the charging information, the charging time data and the charging time length information as entities, and generating a second self-query knowledge graph by combining the association relation and the entities; wherein the content of the first and second substances,
the first empirical value is obtained based on evaluation data of the first expert model.
In a preferred embodiment, said establishing said first self-query knowledge-graph comprises:
generating associated data of the first charging threshold voltage and the charging information according to charging information of a plurality of different batteries in the same type and a second empirical value of the corresponding first charging threshold voltage;
establishing the association relation according to the association data, setting the first charging threshold voltage, the remaining recyclable time data, the charging time data and the charging duration information in the charging information as entities, and generating a second self-query knowledge graph by combining the association relation and the entities; wherein the content of the first and second substances,
the second empirical value is obtained based on the evaluation data of the second expert model.
Further, the method also comprises the following steps:
acquiring first fraction data corresponding to the total charging time from an expert database by combining a third expert model;
determining a corresponding first weight factor according to the first scoring data in combination with a preset corresponding relation table of the first scoring data and the first weight factor;
and correcting the output result of the first self-query knowledge graph by using the first weight factor.
In the embodiment, the weight factor can avoid the correction value from generating larger deviation, and the addition of the weight factor greatly improves the accuracy of the output result of the Bayesian network model and has better reference effect because the weight factor is obtained by combining the expert model.
Furthermore, the charging information is input into the first self-query knowledge map to generate a first charging threshold voltage, the charging information is input into a preset second self-query knowledge map, and the second self-query knowledge map outputs a second charging threshold voltage, namely the first charging threshold voltage and the second charging threshold voltage are changed and are not fixed values, so that the loss influence of the battery in the use process is avoided.
The first and second self-query knowledge maps can input charging information, then form a retrieval formula with the charging information to perform self-query, and quickly obtain corresponding charging threshold voltages, wherein each charging threshold voltage is obtained based on evaluation data of an expert model, namely calibrated by experts according to experience and the like.
In a preferred embodiment, further comprising:
acquiring first fraction data corresponding to the total charging time from an expert database by combining a third expert model;
determining a corresponding first weight factor according to the first scoring data in combination with a preset corresponding relation table of the first scoring data and the first weight factor;
and correcting the output result of the first self-query knowledge graph by using the first weight factor.
In a preferred embodiment, further comprising:
acquiring second grading data corresponding to the total charging time from the expert database by combining a fourth expert model;
determining a corresponding second weight factor according to the second scoring data in combination with a preset corresponding relation table of the second scoring data and the second weight factor;
and correcting the output result of the second self-query knowledge graph by using the second weighting factor.
In the embodiment, the weight factor can avoid the correction value from generating larger deviation, and the addition of the weight factor greatly improves the accuracy of the output result of the second self-query knowledge graph and has better reference function because the weight factor is obtained by combining an expert model.
In a preferred embodiment, the battery dynamic protection method further includes:
generating a high-temperature inhibition protection coefficient according to the current charging environment temperature;
modifying the first charging threshold voltage and/or the second charging threshold voltage output by the first self-query knowledge map in combination with the high temperature rejection protection factor.
And correcting the first charging threshold voltage and/or the second charging threshold voltage output by the first self-query knowledge graph based on the high-temperature inhibition protection coefficient, so that the accuracy of the self-query knowledge graph is greatly improved.
Referring to fig. 2, a second embodiment of the present invention provides a battery charging dynamic protection apparatus, including:
the charging information acquisition module is used for acquiring charging information of the battery, wherein the charging information comprises residual recyclable time data, charging time data and charging duration information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the battery reaches the second charging threshold voltage in the charging process of the battery through a charging power supply; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the battery, and the second pulse current is used for triggering the energy storage device to be coupled with the charging power supply.
Referring to fig. 3, a battery charging dynamic protection system according to a third embodiment of the present invention includes: a dynamic battery charging protection device 301 and an automobile charging post 302,
wherein the battery charging dynamic protection device comprises:
the charging information acquisition module is used for acquiring charging information of the automobile lithium battery from an automobile BMS system, wherein the charging information comprises residual recyclable time data, charging time data and charging time information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the automobile lithium battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the automobile lithium battery reaches the second charging threshold voltage in the process that the automobile lithium battery is charged through the automobile charging pile; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the automobile lithium battery, and the second pulse current is used for triggering the energy storage device to be coupled with the automobile charging pile.
The relevant effect of the system in the present invention is the same as the above corresponding method, and will not be described herein.
The embodiment of the fourth aspect of the invention provides an automobile lithium battery charging dynamic protection system based on a knowledge graph and a 5G technology, which comprises the following steps: a dynamic protection device for charging a battery and an automobile charging pile,
wherein the battery charging dynamic protection device comprises:
the charging information acquisition module is used for acquiring charging information of the automobile lithium battery from an automobile BMS system through a 5G network, wherein the charging information comprises residual recyclable time data, charging time data and charging time length information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage; (ii) a
The charging protection module triggers to generate a first pulse current if the charging voltage of the automobile lithium battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the automobile lithium battery reaches the second charging threshold voltage in the process that the automobile lithium battery is charged through the automobile charging pile; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the automobile lithium battery, and the second pulse current is used for triggering the energy storage device to be coupled with the automobile charging pile.
The relevant effect of the system in the present invention is the same as the above corresponding method, and will not be described herein.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for dynamic protection of battery charging, comprising:
acquiring charging information of a battery, wherein the charging information comprises residual recyclable time data, charging time data and charging duration information each time;
inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
in the process that the battery is charged by a charging power supply, if the charging voltage of the battery is lower than the first charging threshold voltage, triggering to generate a first pulse current, and if the charging voltage of the battery reaches the second charging threshold voltage, triggering to generate a second pulse current; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the battery, and the second pulse current is used for triggering the energy storage device to be coupled with the charging power supply.
2. The battery charging dynamic protection method of claim 1, further comprising: establishing the second self-query knowledge-graph, establishing the first self-query knowledge-graph.
3. The battery charge dynamic protection method of claim 2, wherein said establishing the second self-query knowledge-graph comprises:
generating associated data of a second charging threshold voltage and charging information according to charging information of a plurality of different batteries in the same type and a first verified value of the corresponding second charging threshold voltage;
establishing the association relation according to the association data, setting the second charging threshold voltage, the remaining recyclable time data in the charging information, the charging time data and the charging time length information as entities, and generating a second self-query knowledge graph by combining the association relation and the entities; wherein the content of the first and second substances,
the first empirical value is obtained based on evaluation data of the first expert model.
4. The battery charge dynamic protection method of claim 2, wherein said establishing the first self-query knowledge-graph comprises:
generating associated data of the first charging threshold voltage and the charging information according to charging information of a plurality of different batteries in the same type and a second empirical value of the corresponding first charging threshold voltage;
establishing the association relation according to the association data, setting the first charging threshold voltage, the remaining recyclable time data, the charging time data and the charging duration information in the charging information as entities, and generating a second self-query knowledge graph by combining the association relation and the entities; wherein the content of the first and second substances,
the second empirical value is obtained based on the evaluation data of the second expert model.
5. The battery charging dynamic protection method of claim 3, further comprising:
acquiring first fraction data corresponding to the total charging time from an expert database by combining a third expert model;
determining a corresponding first weight factor according to the first scoring data in combination with a preset corresponding relation table of the first scoring data and the first weight factor;
and correcting the output result of the first self-query knowledge graph by using the first weight factor.
6. The battery charging dynamic protection method of claim 4, further comprising:
acquiring second grading data corresponding to the total charging time from the expert database by combining a fourth expert model;
determining a corresponding second weight factor according to the second scoring data in combination with a preset corresponding relation table of the second scoring data and the second weight factor;
and correcting the output result of the second self-query knowledge graph by using the second weighting factor.
7. The battery charging dynamic protection method of claim 1, further comprising:
generating a high-temperature inhibition protection coefficient according to the current charging environment temperature;
modifying the first charging threshold voltage and/or the second charging threshold voltage output by the first self-query knowledge map in combination with the high temperature rejection protection factor.
8. A battery charging dynamic protection device, comprising:
the charging information acquisition module is used for acquiring charging information of the battery, wherein the charging information comprises residual recyclable time data, charging time data and charging duration information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the battery reaches the second charging threshold voltage in the charging process of the battery through a charging power supply; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the battery, and the second pulse current is used for triggering the energy storage device to be coupled with the charging power supply.
9. The utility model provides a car lithium cell dynamic charging protection system which characterized in that includes: battery dynamic protection device and car charging pile, wherein battery charging dynamic protection device includes:
the charging information acquisition module is used for acquiring charging information of the automobile lithium battery from an automobile BMS system, wherein the charging information comprises residual recyclable time data, charging time data and charging time information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the automobile lithium battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the automobile lithium battery reaches the second charging threshold voltage in the process that the automobile lithium battery is charged through the automobile charging pile; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the automobile lithium battery, and the second pulse current is used for triggering the energy storage device to be coupled with the automobile charging pile.
10. Automobile lithium battery dynamic charging protection system based on knowledge map and 5G technique, its characterized in that includes: battery dynamic protection device and car charging pile, wherein battery charging dynamic protection device includes:
the charging information acquisition module is used for acquiring charging information of the automobile lithium battery from an automobile BMS system through a 5G network, wherein the charging information comprises residual recyclable time data, charging time data and charging time length information each time;
the threshold voltage generation module is used for inputting the charging information into a first self-query knowledge graph to generate a first charging threshold voltage, and inputting the charging information into a preset second self-query knowledge graph, wherein the second self-query knowledge graph outputs a second charging threshold voltage; the first self-query knowledge-graph comprises: the correlation between the remaining cyclable number data, the charging number data and the charging duration information and the first charging threshold voltage is provided, and the second self-query knowledge map comprises: the residual recyclable time data, the charging time data and the incidence relation between the charging time length information and the second charging threshold voltage;
the charging protection module triggers to generate a first pulse current if the charging voltage of the automobile lithium battery is lower than the first charging threshold voltage, and triggers to generate a second pulse current if the charging voltage of the automobile lithium battery reaches the second charging threshold voltage in the process that the automobile lithium battery is charged through the automobile charging pile; wherein the content of the first and second substances,
the first pulse current is used for triggering an energy storage device to be coupled with the automobile lithium battery, and the second pulse current is used for triggering the energy storage device to be coupled with the automobile charging pile.
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