CN118100355A - Quick charging technology based on lead-carbon battery and battery management system - Google Patents
Quick charging technology based on lead-carbon battery and battery management system Download PDFInfo
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- 238000007600 charging Methods 0.000 title claims abstract description 344
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- 230000036541 health Effects 0.000 claims abstract description 50
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- 238000012544 monitoring process Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000011156 evaluation Methods 0.000 claims abstract description 6
- 238000010277 constant-current charging Methods 0.000 claims description 24
- 238000010280 constant potential charging Methods 0.000 claims description 18
- 230000003247 decreasing effect Effects 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a quick charging technology and a battery management system based on a lead-carbon battery, wherein a battery charging mode of the lead-carbon battery is set based on battery capacity, a battery charging strategy of the lead-carbon battery is designed based on the battery charging mode, charging of different charging modes and different charging parameters is carried out according to different initial battery capacities of the lead-carbon battery, charging efficiency and charging speed are guaranteed, then the lead-carbon battery is charged according to a target charging mode and initial charging parameters, resistance change in the charging process of the lead-carbon battery is monitored, the surface temperature of the battery is monitored to obtain monitoring data, the charging process is evaluated based on the monitoring data, the initial charging parameters are adjusted according to an evaluation result, monitoring of the charging process is realized, and efficient charging is realized as much as possible under the condition that charging safety and battery health are guaranteed.
Description
Technical Field
The invention relates to the technical field of battery management, in particular to a quick charging technology based on a lead-carbon battery and a battery management system.
Background
The lead-carbon battery is a capacitive lead-acid battery, is a technology evolved from the traditional lead-acid battery, and can obviously prolong the service life of the lead-acid battery by adding activated carbon into the negative electrode of the lead-acid battery.
The lead-carbon battery is a novel super battery, combines the lead-acid battery and the super capacitor, not only plays the advantage of instant high-capacity charging of the super capacitor, but also plays the specific energy advantage of the lead-acid battery, and has very good charging and discharging performances. And due to the addition of carbon, the sulfation phenomenon of the negative electrode is prevented, one factor of the past battery failure is improved, and the service life of the battery is prolonged.
Due to the adoption of the lead-carbon technology, the performance of the lead-carbon battery is far superior to that of the traditional lead-acid battery, and the lead-acid battery can be applied to new energy vehicles, such as: hybrid electric vehicles, electric bicycles, and the like; the energy storage device can also be used in the field of new energy storage, such as wind-light power generation energy storage and the like. Has extremely strong competitive advantage in various application fields.
The existing lead-carbon battery charging and discharging can not effectively manage the differential battery cells, so that the single battery cells are irreversibly damaged due to overcharging, the influence of temperature factors on the battery use can not be considered in the use process, the charging and discharging protection threshold value can not be adjusted according to the environmental operation temperature, and the battery characteristics are not attached to carry out charging management.
Disclosure of Invention
The invention provides a quick charging technology based on a lead-carbon battery and a battery management system, which are used for solving the problems in the background technology.
A quick charge technique based on lead-carbon batteries and battery management system, comprising:
The strategy determining module is used for setting a battery charging mode of the lead-carbon battery based on the battery capacity and designing a battery charging strategy of the lead-carbon battery based on the battery charging mode;
the mode determining module is used for acquiring the initial battery capacity of the lead-carbon battery and matching a corresponding target charging mode for the lead-carbon battery from a battery charging strategy;
The charging monitoring module is used for charging the lead-carbon battery according to a target charging mode and initial charging parameters, monitoring resistance change in the charging process of the lead-carbon battery, and obtaining monitoring data;
and the charging adjustment module is used for evaluating the charging process based on the monitoring data and adjusting the initial charging parameters according to the evaluation result.
Preferably, the policy determining module includes:
The mode determining unit is used for determining that the battery charging mode of the lead-carbon battery is a constant-current charging mode when the battery capacity is smaller than a preset capacity threshold value;
The mode determining unit is further used for determining that the battery charging mode of the lead-carbon battery is a constant voltage charging mode when the battery capacity is not smaller than a preset capacity threshold value;
The parameter determining unit is used for setting initial charging parameters of a constant-current charging mode and a constant-voltage charging mode based on the full capacity of the lead-carbon battery;
And the strategy determining unit is used for obtaining the battery charging strategy of the lead-carbon battery based on the battery charging mode and the initial charging parameter combination.
Preferably, the parameter determining unit includes:
The range determining unit is used for matching the full capacity of the lead-carbon battery with a preset capacity-charging parameter comparison table and determining a corresponding charging parameter range;
and the parameter selection unit is used for determining and selecting the charging parameter which is most matched with the charging environment parameter from the charging parameter range as the initial charging parameter of the constant-current charging mode and the constant-voltage charging mode.
Preferably, the mode determining module includes:
The capacity judging unit is used for determining the size relation between the initial battery capacity of the lead-carbon battery and a preset capacity threshold value and determining a target charging mode of the lead-carbon battery;
A first determining unit, configured to determine a charging current according to an initial battery voltage of the lead-carbon battery when it is determined that the target charging mode is a constant current charging mode;
And a second determination unit configured to determine a magnitude of the charging current based on a latest battery capacity of the lead-carbon battery when it is determined that the target charging mode is the constant voltage charging mode.
Preferably, the first determining unit includes:
the voltage judging unit is used for judging whether the initial battery voltage of the lead-carbon battery is larger than a preset charging voltage or not when the target charging mode is determined to be a constant-current charging mode;
if yes, determining the charging current of the constant current charging mode as rated current;
otherwise, determining the charging current of the constant-current charging mode as the lowest limiting current determined by the rated current.
Preferably, the second determining unit includes:
And the parameter determining unit is used for determining initial charging current based on the initial battery capacity of the lead-carbon battery when the target charging mode is determined to be a constant-voltage charging mode, setting a current decreasing value and charging set time based on the historical charging characteristics of the lead-carbon battery, and charging the lead-carbon battery according to the decreasing value and the charging mode of the current decreasing based on the initial charging current to determine that the charging time of each charging current is the same and the charging set time.
Preferably, the charging monitoring module includes:
The charging unit is used for carrying out parameter setting on the charging equipment according to the target charging mode and the initial charging parameter, and charging the lead-carbon battery after the setting is completed;
The first acquisition unit is used for acquiring the internal resistance value of the lead-carbon battery in the charging process;
the second acquisition unit is used for acquiring a battery surface temperature value of the lead-carbon battery in the charging process;
and the data screening unit is used for carrying out data screening on the internal resistance value of the battery and the surface temperature value of the battery to obtain monitoring data.
Preferably, the charge adjustment module includes:
The difference determining unit is used for acquiring historical charge data and historical discharge data of the lead-carbon battery, establishing a historical charge data change curve and a historical discharge data change curve, and respectively carrying out comparison analysis on the historical charge data change curve and the historical discharge data change curve and a standard charge curve and a standard discharge curve based on the historical charge data change curve and the historical discharge data change curve to determine a charge curve difference and a discharge curve difference;
The grade determining unit is used for determining a first health grade of the lead-carbon battery based on the charging curve difference, determining a second health grade of the lead-carbon battery based on the discharging curve difference and determining a comprehensive health grade of the lead-carbon battery based on the first health grade and the second health grade;
A threshold setting unit for setting an internal resistance threshold and a temperature threshold of the lead-carbon battery based on the comprehensive health grade of the lead-carbon battery;
The data judging unit is used for acquiring a battery internal resistance value change curve of the lead-carbon battery in the charging process and a battery surface temperature value change curve in the charging process from the monitoring data, judging whether the battery internal resistance value change curve and the battery surface temperature value change curve are respectively smaller than an internal resistance threshold value and a temperature threshold value, if so, determining that the initial charging parameters are not required to be adjusted, otherwise, determining that the initial charging parameters are required to be adjusted;
The first adjusting unit is used for judging whether the resistance difference between the internal resistance value change curve of the battery and the internal resistance threshold value is within a preset resistance difference range or not after the initial charging parameters are required to be adjusted;
if so, adjusting initial charging parameters of the lead-carbon battery to achieve an equalizing charging effect;
Otherwise, setting and adjusting the charging current in the initial charging parameters of the lead-carbon battery to be one tenth of the current capacity of the lead-carbon battery for charging;
The second adjusting unit is used for judging whether the temperature value difference between the battery surface temperature value change curve and the temperature threshold value is within a preset temperature value difference range or not after the initial charging parameters are determined to be adjusted;
If so, adjusting initial charging parameters of the lead-carbon battery to enable the charging speed to be below a preset speed threshold;
Otherwise, the charging of the lead-carbon battery is stopped.
Preferably, the rank determination unit includes:
And the grade comparison unit is used for taking the first health grade as the comprehensive health grade when the first health grade is higher than the second health grade, and taking the first health grade as the comprehensive health grade otherwise.
Preferably, the threshold setting unit includes:
The first setting unit is used for determining that the internal resistance threshold of the lead-carbon battery is the sum of rated internal resistance and a first internal resistance value when the comprehensive health grade is higher than a preset grade threshold, otherwise, determining that the internal resistance threshold of the carbon battery is the sum of the rated internal resistance, the first internal resistance value and a second internal resistance value;
And the second setting unit is used for determining that the temperature threshold of the lead-carbon battery is rated temperature when the comprehensive health grade is higher than the preset grade threshold, otherwise, determining that the temperature threshold of the lead-carbon battery is the sum of the rated temperature and the preset temperature increment value.
Compared with the prior art, the invention has the following beneficial effects:
The method comprises the steps of setting a battery charging mode of a lead-carbon battery based on battery capacity, designing a battery charging strategy of the lead-carbon battery based on the battery charging mode, charging different initial battery capacities of the lead-carbon battery according to different charging modes and different charging parameters, guaranteeing charging efficiency and charging speed, then charging the lead-carbon battery according to a target charging mode and initial charging parameters, monitoring resistance change in a charging process of the lead-carbon battery, monitoring the surface temperature of the battery to obtain monitoring data, evaluating the charging process based on the monitoring data, adjusting the initial charging parameters according to an evaluation result, monitoring the charging process, and realizing efficient charging as much as possible under the condition of ensuring charging safety and battery health.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a block diagram of a lead-carbon battery-based fast charging technique and battery management system in accordance with an embodiment of the present invention;
FIG. 2 is a block diagram of a mode determining module according to an embodiment of the present invention;
fig. 3 is a block diagram of a charge adjustment module according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Example 1:
A quick charge technology and battery management system based on lead-carbon batteries, as shown in fig. 1, comprises:
The strategy determining module is used for setting a battery charging mode of the lead-carbon battery based on the battery capacity and designing a battery charging strategy of the lead-carbon battery based on the battery charging mode;
the mode determining module is used for acquiring the initial battery capacity of the lead-carbon battery and matching a corresponding target charging mode for the lead-carbon battery from a battery charging strategy;
The charging monitoring module is used for charging the lead-carbon battery according to a target charging mode and initial charging parameters, monitoring resistance change in the charging process of the lead-carbon battery, and obtaining monitoring data;
and the charging adjustment module is used for evaluating the charging process based on the monitoring data and adjusting the initial charging parameters according to the evaluation result.
In this embodiment, the battery charging modes include both constant voltage and constant current charging.
In this embodiment, the initial charging parameters are, for example, charging current, charging voltage, charging time, etc.
In this embodiment, the adjustment of the initial charge parameter includes adjusting the initial charge parameter for the purpose of equalizing charge or controlling the charge speed, and the like.
The beneficial effects of above-mentioned design scheme are: the method comprises the steps of setting a battery charging mode of a lead-carbon battery based on battery capacity, designing a battery charging strategy of the lead-carbon battery based on the battery charging mode, charging different initial battery capacities of the lead-carbon battery according to different charging modes and different charging parameters, guaranteeing charging efficiency and charging speed, then charging the lead-carbon battery according to a target charging mode and initial charging parameters, monitoring resistance change in a charging process of the lead-carbon battery, monitoring the surface temperature of the battery to obtain monitoring data, evaluating the charging process based on the monitoring data, adjusting the initial charging parameters according to an evaluation result, monitoring the charging process, and realizing efficient charging as much as possible under the condition of ensuring charging safety and battery health.
Example 2:
based on embodiment 1, the embodiment of the invention provides a quick charging technology based on a lead-carbon battery and a battery management system, wherein the policy determining module comprises:
The mode determining unit is used for determining that the battery charging mode of the lead-carbon battery is a constant-current charging mode when the battery capacity is smaller than a preset capacity threshold value;
The mode determining unit is further used for determining that the battery charging mode of the lead-carbon battery is a constant voltage charging mode when the battery capacity is not smaller than a preset capacity threshold value;
The parameter determining unit is used for setting initial charging parameters of a constant-current charging mode and a constant-voltage charging mode based on the full capacity of the lead-carbon battery;
And the strategy determining unit is used for obtaining the battery charging strategy of the lead-carbon battery based on the battery charging mode and the initial charging parameter combination.
In this embodiment, the initial charging parameter is, for example, a constant current magnitude, a constant voltage magnitude, a charging time, or the like.
The beneficial effects of above-mentioned design scheme are: by setting the battery charging mode of the lead-carbon battery based on the battery capacity, the battery charging strategy of the lead-carbon battery is designed based on the battery charging mode, and charging of different charging modes and different charging parameters is performed aiming at different initial battery capacities of the lead-carbon battery, so that the charging efficiency and the charging speed are ensured.
Example 3:
Based on embodiment 2, an embodiment of the present invention provides a quick charging technology based on a lead-carbon battery and a battery management system, where the parameter determining unit includes:
The range determining unit is used for matching the full capacity of the lead-carbon battery with a preset capacity-charging parameter comparison table and determining a corresponding charging parameter range;
and the parameter selection unit is used for determining and selecting the charging parameter which is most matched with the charging environment parameter from the charging parameter range as the initial charging parameter of the constant-current charging mode and the constant-voltage charging mode.
The beneficial effects of above-mentioned design scheme are: the charging parameters which are most matched with the charging environment parameters are determined and selected from the charging parameter range to serve as initial charging parameters of the constant-current charging mode and the constant-voltage charging mode, so that the reasonability of the obtained initial charging parameters is guaranteed, and a foundation is provided for guaranteeing the charging efficiency.
Example 4:
Based on embodiment 1, an embodiment of the present invention provides a quick charging technology and a battery management system based on a lead-carbon battery, as shown in fig. 2, where the mode determining module includes:
The capacity judging unit is used for determining the size relation between the initial battery capacity of the lead-carbon battery and a preset capacity threshold value and determining a target charging mode of the lead-carbon battery;
A first determining unit, configured to determine a charging current according to an initial battery voltage of the lead-carbon battery when it is determined that the target charging mode is a constant current charging mode;
And a second determination unit configured to determine a magnitude of the charging current based on a latest battery capacity of the lead-carbon battery when it is determined that the target charging mode is the constant voltage charging mode.
In this embodiment, the present charging current is selected when the magnitude of the charging current is determined to be inconsistent with the initial charging parameters.
The beneficial effects of above-mentioned design scheme are: the charging current after the charging mode is determined is set by referring to the initial battery voltage and the latest battery capacity of the lead-carbon battery, and the charging effect is ensured by setting reasonable charging current.
Example 5:
based on embodiment 4, an embodiment of the present invention provides a quick charging technology based on a lead-carbon battery and a battery management system, where the first determining unit includes:
the voltage judging unit is used for judging whether the initial battery voltage of the lead-carbon battery is larger than a preset charging voltage or not when the target charging mode is determined to be a constant-current charging mode;
if yes, determining the charging current of the constant current charging mode as rated current;
otherwise, determining the charging current of the constant-current charging mode as the lowest limiting current determined by the rated current.
In this embodiment, the minimum limiting current is less than the rated current.
The beneficial effects of above-mentioned design scheme are: and determining the charging current of the constant-current charging mode by judging whether the initial battery voltage of the lead-carbon battery is larger than the preset charging voltage, so as to ensure the charging efficiency and the charging safety.
Example 6:
based on embodiment 4, an embodiment of the present invention provides a quick charging technology based on a lead-carbon battery and a battery management system, where the second determining unit includes:
And the parameter determining unit is used for determining initial charging current based on the initial battery capacity of the lead-carbon battery when the target charging mode is determined to be a constant-voltage charging mode, setting a current decreasing value and charging set time based on the historical charging characteristics of the lead-carbon battery, and charging the lead-carbon battery according to the decreasing value and the charging mode of the current decreasing based on the initial charging current to determine that the charging time of each charging current is the same and the charging set time.
In this embodiment, the historical charging characteristics include a historical charging current, a historical charging time, and its corresponding charging efficiency, etc.
The beneficial effects of above-mentioned design scheme are: through determining initial charging current based on initial battery capacity of the lead-carbon battery, setting current decreasing values and charging set time based on historical charging characteristics of the lead-carbon battery, and charging the lead-carbon battery according to the decreasing values and the charging mode of current decreasing based on the initial charging current, determining that the charging time of each charging current is the same and is the charging set time, realizing reasonable design of the charging current in a constant-voltage charging mode, realizing rapid charging and improving charging efficiency.
Example 7:
based on embodiment 1, an embodiment of the present invention provides a quick charging technology and a battery management system based on a lead-carbon battery, where the charging monitoring module includes:
The charging unit is used for carrying out parameter setting on the charging equipment according to the target charging mode and the initial charging parameter, and charging the lead-carbon battery after the setting is completed;
The first acquisition unit is used for acquiring the internal resistance value of the lead-carbon battery in the charging process;
the second acquisition unit is used for acquiring a battery surface temperature value of the lead-carbon battery in the charging process;
and the data screening unit is used for carrying out data screening on the internal resistance value of the battery and the surface temperature value of the battery to obtain monitoring data.
In the embodiment, data screening is performed on the internal resistance value of the battery and the surface temperature value of the battery, error data are screened out, and accuracy of the obtained monitoring data is guaranteed.
The beneficial effects of above-mentioned design scheme are: the data monitoring of the charging process is realized by collecting the internal resistance value of the battery and the surface temperature value of the battery of the lead-carbon battery in the charging process, and a data base is provided for healthy charging.
Example 8:
based on embodiment 1, an embodiment of the present invention provides a quick charging technology and a battery management system based on a lead-carbon battery, as shown in fig. 3, the charging adjustment module includes:
The difference determining unit is used for acquiring historical charge data and historical discharge data of the lead-carbon battery, establishing a historical charge data change curve and a historical discharge data change curve, and respectively carrying out comparison analysis on the historical charge data change curve and the historical discharge data change curve and a standard charge curve and a standard discharge curve based on the historical charge data change curve and the historical discharge data change curve to determine a charge curve difference and a discharge curve difference;
The grade determining unit is used for determining a first health grade of the lead-carbon battery based on the charging curve difference, determining a second health grade of the lead-carbon battery based on the discharging curve difference and determining a comprehensive health grade of the lead-carbon battery based on the first health grade and the second health grade;
A threshold setting unit for setting an internal resistance threshold and a temperature threshold of the lead-carbon battery based on the comprehensive health grade of the lead-carbon battery;
The data judging unit is used for acquiring a battery internal resistance value change curve of the lead-carbon battery in the charging process and a battery surface temperature value change curve in the charging process from the monitoring data, judging whether the battery internal resistance value change curve and the battery surface temperature value change curve are respectively smaller than an internal resistance threshold value and a temperature threshold value, if so, determining that the initial charging parameters are not required to be adjusted, otherwise, determining that the initial charging parameters are required to be adjusted;
The first adjusting unit is used for judging whether the resistance difference between the internal resistance value change curve of the battery and the internal resistance threshold value is within a preset resistance difference range or not after the initial charging parameters are required to be adjusted;
if so, adjusting initial charging parameters of the lead-carbon battery to achieve an equalizing charging effect;
Otherwise, setting and adjusting the charging current in the initial charging parameters of the lead-carbon battery to be one tenth of the current capacity of the lead-carbon battery for charging;
The second adjusting unit is used for judging whether the temperature value difference between the battery surface temperature value change curve and the temperature threshold value is within a preset temperature value difference range or not after the initial charging parameters are determined to be adjusted;
If so, adjusting initial charging parameters of the lead-carbon battery to enable the charging speed to be below a preset speed threshold;
Otherwise, the charging of the lead-carbon battery is stopped.
In this embodiment, the smaller the charging curve difference, the higher the corresponding first health level, and the smaller the discharging curve difference, the higher the corresponding second health level.
The beneficial effects of above-mentioned design scheme are: setting an internal resistance threshold and a temperature threshold of the lead-carbon battery based on the comprehensive health grade of the lead-carbon battery, ensuring the consistency of the internal resistance threshold and the temperature threshold with the service condition of the battery, providing a basis for healthy charging of the battery, then judging whether the internal resistance value change curve of the battery and the surface temperature value change curve of the battery are respectively smaller than the internal resistance threshold and the temperature threshold, if so, determining that initial charging parameters do not need to be adjusted, otherwise, determining that the initial charging parameters need to be adjusted, and determining whether the charging parameters need to be adjusted through the size relation between the change curve and the threshold, so as to realize judgment of parameter adjustment, and particularly judging whether the resistance difference between the internal resistance value change curve of the battery and the internal resistance threshold is within a preset resistance difference range; if so, adjusting initial charging parameters of the lead-carbon battery to achieve an equalizing charging effect, otherwise, setting and adjusting charging current in the initial charging parameters of the lead-carbon battery to be one tenth of the current capacity of the lead-carbon battery to charge, realizing effective charging and healthy charging of the battery from the aspect of internal resistance of the battery, judging whether the temperature value difference between a battery surface temperature value change curve and a temperature threshold is within a preset temperature value difference range, and if so, adjusting the initial charging parameters of the lead-carbon battery to achieve a charging speed below a preset speed threshold; otherwise, stopping charging the lead-carbon battery, and realizing effective charging and healthy charging of the battery in terms of the surface temperature of the battery, thereby realizing effective management of the battery charging process.
Example 9:
Based on embodiment 8, an embodiment of the present invention provides a quick charging technology based on a lead-carbon battery and a battery management system, where the grade determining unit includes:
And the grade comparison unit is used for taking the first health grade as the comprehensive health grade when the first health grade is higher than the second health grade, and taking the first health grade as the comprehensive health grade otherwise.
The beneficial effects of above-mentioned design scheme are: and the accuracy of the comprehensive health grade of the obtained lead-carbon battery is ensured.
Example 10:
based on embodiment 8, an embodiment of the present invention provides a quick charging technology based on a lead-carbon battery and a battery management system, where the threshold setting unit includes:
The first setting unit is used for determining that the internal resistance threshold of the lead-carbon battery is the sum of rated internal resistance and a first internal resistance value when the comprehensive health grade is higher than a preset grade threshold, otherwise, determining that the internal resistance threshold of the carbon battery is the sum of the rated internal resistance, the first internal resistance value and a second internal resistance value;
And the second setting unit is used for determining that the temperature threshold of the lead-carbon battery is rated temperature when the comprehensive health grade is higher than the preset grade threshold, otherwise, determining that the temperature threshold of the lead-carbon battery is the sum of the rated temperature and the preset temperature increment value.
In this embodiment, the first internal resistance value, the second internal resistance value and the preset temperature increase value are both set in advance according to the actual condition of the battery.
The beneficial effects of above-mentioned design scheme are: the internal resistance threshold and the temperature threshold are set and obtained according to the relation between the comprehensive health grade and the preset grade threshold support, so that high matching performance between the internal resistance threshold and the temperature threshold and the battery condition is ensured, and a foundation is provided for adjustment of charging parameters.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A quick charge technique and battery management system based on lead carbon battery, characterized by comprising:
The strategy determining module is used for setting a battery charging mode of the lead-carbon battery based on the battery capacity and designing a battery charging strategy of the lead-carbon battery based on the battery charging mode;
the mode determining module is used for acquiring the initial battery capacity of the lead-carbon battery and matching a corresponding target charging mode for the lead-carbon battery from a battery charging strategy;
The charging monitoring module is used for charging the lead-carbon battery according to a target charging mode and initial charging parameters, monitoring resistance change in the charging process of the lead-carbon battery, and obtaining monitoring data;
and the charging adjustment module is used for evaluating the charging process based on the monitoring data and adjusting the initial charging parameters according to the evaluation result.
2. The lead-carbon battery-based rapid charging technique and battery management system of claim 1, wherein the policy determination module comprises:
The mode determining unit is used for determining that the battery charging mode of the lead-carbon battery is a constant-current charging mode when the battery capacity is smaller than a preset capacity threshold value;
The mode determining unit is further used for determining that the battery charging mode of the lead-carbon battery is a constant voltage charging mode when the battery capacity is not smaller than a preset capacity threshold value;
The parameter determining unit is used for setting initial charging parameters of a constant-current charging mode and a constant-voltage charging mode based on the full capacity of the lead-carbon battery;
And the strategy determining unit is used for obtaining the battery charging strategy of the lead-carbon battery based on the battery charging mode and the initial charging parameter combination.
3. The quick charge technology and battery management system based on a lead-carbon battery according to claim 2, wherein the parameter determining unit comprises:
The range determining unit is used for matching the full capacity of the lead-carbon battery with a preset capacity-charging parameter comparison table and determining a corresponding charging parameter range;
and the parameter selection unit is used for determining and selecting the charging parameter which is most matched with the charging environment parameter from the charging parameter range as the initial charging parameter of the constant-current charging mode and the constant-voltage charging mode.
4. The lead-carbon battery-based rapid charging technique and battery management system of claim 1, wherein the mode determination module comprises:
The capacity judging unit is used for determining the size relation between the initial battery capacity of the lead-carbon battery and a preset capacity threshold value and determining a target charging mode of the lead-carbon battery;
A first determining unit, configured to determine a charging current according to an initial battery voltage of the lead-carbon battery when it is determined that the target charging mode is a constant current charging mode;
And a second determination unit configured to determine a magnitude of the charging current based on a latest battery capacity of the lead-carbon battery when it is determined that the target charging mode is the constant voltage charging mode.
5. The quick charge technology and battery management system according to claim 4, wherein the first determining unit comprises:
the voltage judging unit is used for judging whether the initial battery voltage of the lead-carbon battery is larger than a preset charging voltage or not when the target charging mode is determined to be a constant-current charging mode;
if yes, determining the charging current of the constant current charging mode as rated current;
otherwise, determining the charging current of the constant-current charging mode as the lowest limiting current determined by the rated current.
6. The quick charge technology and battery management system based on a lead carbon battery as claimed in claim 4, wherein the second determining unit comprises:
And the parameter determining unit is used for determining initial charging current based on the initial battery capacity of the lead-carbon battery when the target charging mode is determined to be a constant-voltage charging mode, setting a current decreasing value and charging set time based on the historical charging characteristics of the lead-carbon battery, and charging the lead-carbon battery according to the decreasing value and the charging mode of the current decreasing based on the initial charging current to determine that the charging time of each charging current is the same and the charging set time.
7. The lead-carbon battery-based rapid charging technique and battery management system of claim 1, wherein the charge monitoring module comprises:
The charging unit is used for carrying out parameter setting on the charging equipment according to the target charging mode and the initial charging parameter, and charging the lead-carbon battery after the setting is completed;
The first acquisition unit is used for acquiring the internal resistance value of the lead-carbon battery in the charging process;
the second acquisition unit is used for acquiring a battery surface temperature value of the lead-carbon battery in the charging process;
and the data screening unit is used for carrying out data screening on the internal resistance value of the battery and the surface temperature value of the battery to obtain monitoring data.
8. The lead-carbon battery-based rapid charging technique and battery management system of claim 1, wherein the charge adjustment module comprises:
The difference determining unit is used for acquiring historical charge data and historical discharge data of the lead-carbon battery, establishing a historical charge data change curve and a historical discharge data change curve, and respectively carrying out comparison analysis on the historical charge data change curve and the historical discharge data change curve and a standard charge curve and a standard discharge curve based on the historical charge data change curve and the historical discharge data change curve to determine a charge curve difference and a discharge curve difference;
The grade determining unit is used for determining a first health grade of the lead-carbon battery based on the charging curve difference, determining a second health grade of the lead-carbon battery based on the discharging curve difference and determining a comprehensive health grade of the lead-carbon battery based on the first health grade and the second health grade;
A threshold setting unit for setting an internal resistance threshold and a temperature threshold of the lead-carbon battery based on the comprehensive health grade of the lead-carbon battery;
The data judging unit is used for acquiring a battery internal resistance value change curve of the lead-carbon battery in the charging process and a battery surface temperature value change curve in the charging process from the monitoring data, judging whether the battery internal resistance value change curve and the battery surface temperature value change curve are respectively smaller than an internal resistance threshold value and a temperature threshold value, if so, determining that the initial charging parameters are not required to be adjusted, otherwise, determining that the initial charging parameters are required to be adjusted;
The first adjusting unit is used for judging whether the resistance difference between the internal resistance value change curve of the battery and the internal resistance threshold value is within a preset resistance difference range or not after the initial charging parameters are required to be adjusted;
if so, adjusting initial charging parameters of the lead-carbon battery to achieve an equalizing charging effect;
Otherwise, setting and adjusting the charging current in the initial charging parameters of the lead-carbon battery to be one tenth of the current capacity of the lead-carbon battery for charging;
The second adjusting unit is used for judging whether the temperature value difference between the battery surface temperature value change curve and the temperature threshold value is within a preset temperature value difference range or not after the initial charging parameters are determined to be adjusted;
If so, adjusting initial charging parameters of the lead-carbon battery to enable the charging speed to be below a preset speed threshold;
Otherwise, the charging of the lead-carbon battery is stopped.
9. The quick charge technology and battery management system based on lead carbon batteries of claim 8, wherein the grade determination unit comprises:
And the grade comparison unit is used for taking the first health grade as the comprehensive health grade when the first health grade is higher than the second health grade, and taking the first health grade as the comprehensive health grade otherwise.
10. The quick charge technology and battery management system based on a lead-carbon battery according to claim 8, wherein the threshold setting unit comprises:
The first setting unit is used for determining that the internal resistance threshold of the lead-carbon battery is the sum of rated internal resistance and a first internal resistance value when the comprehensive health grade is higher than a preset grade threshold, otherwise, determining that the internal resistance threshold of the carbon battery is the sum of the rated internal resistance, the first internal resistance value and a second internal resistance value;
And the second setting unit is used for determining that the temperature threshold of the lead-carbon battery is rated temperature when the comprehensive health grade is higher than the preset grade threshold, otherwise, determining that the temperature threshold of the lead-carbon battery is the sum of the rated temperature and the preset temperature increment value.
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