CN111077453A - Battery electric quantity detection system and method - Google Patents
Battery electric quantity detection system and method Download PDFInfo
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- CN111077453A CN111077453A CN201911291372.3A CN201911291372A CN111077453A CN 111077453 A CN111077453 A CN 111077453A CN 201911291372 A CN201911291372 A CN 201911291372A CN 111077453 A CN111077453 A CN 111077453A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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Abstract
The invention relates to the technical field of batteries, in particular to a battery electric quantity detection system which comprises a controller, the controller is in signal connection with an information acquisition module, a temporary storage unit, a searching module, a voltage measuring module, a current measuring module, a temperature measuring module, a humidity measuring module and an aging detecting unit, the searching module is electrically connected with a database, the database is in signal connection with a pasting module, the pasting module is electrically connected with a clearing module, a microcontroller and a storage module, the storage module is in signal connection with an average module, the average module is in signal connection with an output module, the output module is in signal connection with a display module, and the display module, the output module, the average value module, the storage module, the pasting module and the clearing module are in signal connection with the microcontroller. The invention has the advantage of enhancing the accuracy of the battery electric quantity detection effect.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a system and a method for detecting electric quantity of a battery.
Background
When the battery is used, the electric quantity of the battery needs to be detected, so that the electric quantity of the battery is known in real time, the battery is charged in time, the condition that the electric quantity of the battery is used up is prevented, the existing detection system only measures the voltage of the battery, the electric quantity of the battery is obtained, but the accuracy of a measurement result can be influenced because the battery is influenced by aging and only depends on the voltages at two ends of the battery to measure.
Disclosure of Invention
The invention aims to solve the defect of inaccurate detection result in the prior art, and provides a battery capacity detection system and a battery capacity detection method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the detection system for the electric quantity of the battery comprises a controller, wherein the controller is in signal connection with an information acquisition module, a temporary storage unit, a searching module, a voltage measurement module, a current measurement module, a temperature measurement module, a humidity measurement module and an aging detection unit, the searching module is electrically connected with a database, the database is in signal connection with a pasting module, the pasting module is electrically connected with a clearing module, a microcontroller and a storage module, the storage module is in signal connection with an average value module, the average value module is in signal connection with an output module, the output module is in signal connection with a display module, and the display module, the output module, the average value module, the storage module, the pasting module and the clearing module are in signal connection with the microcontroller;
preferably, the aging detection unit comprises a search module, a copy module, an internal resistance measurement module and a calculation module, wherein the search module, the copy module, the internal resistance measurement module and the calculation module are in signal connection with the controller, the search module is in signal connection with the copy module, and the search module is in signal connection with a resistance database.
Preferably, the temporary storage module comprises a voltage data storage module, a current data storage module, a temperature data storage module, a humidity data storage module and an aging data storage module.
Preferably, the database is in signal connection with an expansion module and a cloud database.
Preferably, the information acquisition module includes information about internal resistance of the battery, information about type of the battery, a standard voltage of the battery, and a standard current of the battery.
The invention also provides a method for detecting the electric quantity of the battery, which comprises the following steps:
s1, measuring the voltage, the current, the temperature, the humidity and the aging degree of the battery through a voltage measuring module, a current measuring module, a temperature measuring module and a humidity measuring and aging measuring unit;
s2, storing the measurement result through the temporary storage unit, searching data matched with the measurement result in the database through the searching module, copying and pasting the inquired data through the pasting module, and storing the data in the storage module;
and S3, repeating the steps S1 and S2 for 5-7 times, storing the result in a storage module, taking out the average value through an average value module, outputting through an output module, and finally displaying through a display module.
Preferably, the measurement of the degree of ageing comprises the following steps:
a1, by measuring the temperature of the battery, searching the internal resistance value R1 of the normal battery changing along with the temperature in the resistance database through a searching module;
a2, measuring an internal resistance value R2 after the battery is aged through an internal resistance measuring module;
a3, subtracting the internal resistance R1 changing with the temperature from the measured resistance R2 to obtain the internal resistance R3 after the actual aging of the battery, and obtaining the standard internal resistance R of the battery through an information obtaining module;
and A4, calculating the ratio of R3 to R by a calculation module, thereby obtaining the aging degree of the battery.
Preferably, when the searching module searches, the searching module searches for data corresponding to the voltage in the database, then the searching module searches for data corresponding to the current in the searched data to be recorded as first data, then the searching module searches for data corresponding to the temperature and humidity in the first data to be recorded as second data, and finally the searching module searches for data corresponding to the aging in the second data.
The invention provides a system and a method for detecting the electric quantity of a battery, which have the beneficial effects that: through the design of aging measurement unit, voltage measurement module, current measurement module, temperature measurement module, humidity measurement module, measure each item index of battery, guaranteed the accuracy that the battery detected the battery power to in time charge the battery, prevent that the battery from appearing the condition that the electric quantity was used up.
Drawings
FIG. 1 is a block diagram of a system for detecting battery power according to the present invention;
fig. 2 is a system block diagram of an aging detection unit of a battery power detection system according to the present invention;
fig. 3 is a system block diagram of a temporary storage unit of a battery power detection system according to the present invention;
fig. 4 is a system block diagram of a system information obtaining module for detecting battery power according to the present invention;
fig. 5 is a flowchart of a method for detecting battery power according to the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-4, a battery power detection system comprises a controller, the controller is in signal connection with an information acquisition module, a temporary storage unit, a search module, a voltage measurement module, a current measurement module, a temperature measurement module, a humidity measurement module, and an aging detection unit, the search module is electrically connected with a database, the database is in signal connection with a paste module, the paste module is electrically connected with a cleaning module, a microcontroller, and a storage module, the storage module is in signal connection with an average value module, the average value module is in signal connection with an output module, the output module is in signal connection with a display module, the output module, the average value module, the storage module, the paste module, the cleaning module is in signal connection with the microcontroller, and the detection system is connected with the microcontroller through the voltage measurement module, the current measurement module, the voltage, the current, the temperature, the humidity and the aging degree of the battery are detected, and the accuracy of battery electric quantity detection is facilitated;
the aging detection unit comprises a searching module, a copying module, an internal resistance measurement module and a calculation module, the searching module, the copying module, the internal resistance measurement module and the calculation module are in signal connection with the controller, the searching module is in signal connection with the copying module, the searching module is in signal connection with a resistance database, when the battery is aged, the internal resistance of the battery can be increased, and the aging degree of the battery is obtained by detecting the internal resistance of the battery.
The temporary storage module comprises a voltage data storage module, a current data storage module, a temperature data storage module, a humidity data storage module and an aging data storage module, and the database is in signal connection with an expansion module and a cloud database.
The information acquisition module is used for acquiring internal resistance information, battery type information, battery standard voltage and battery standard current of the battery, and the internal resistance, the type, the standard voltage and the standard current of the battery under normal conditions are conveniently acquired through the information acquisition module.
Referring to fig. 5, the present invention further provides a method for detecting battery power, including the following steps:
s1, measuring the voltage, the current, the temperature, the humidity and the aging degree of the battery through a voltage measuring module, a current measuring module, a temperature measuring module and a humidity measuring and aging measuring unit;
s2, storing the measurement result through the temporary storage unit, searching data matched with the measurement result in the database through the searching module, copying and pasting the inquired data through the pasting module, and storing the data in the storage module;
and S3, repeating the steps S1 and S2 for 5-7 times, storing the result in a storage module, taking out the average value through an average value module, outputting the average value through an output module, and finally displaying the average value through a display module, so that accidental factors are avoided by adopting the average value, and the accuracy of the detection result is facilitated.
Example 2
As another preferred embodiment of the present invention, the difference from embodiment 1 is that the measurement of the degree of aging includes the steps of:
a1, by measuring the temperature of the battery, searching the internal resistance value R1 of the normal battery changing along with the temperature in the resistance database through a searching module;
a2, measuring an internal resistance value R2 after the battery is aged through an internal resistance measuring module;
a3, subtracting the internal resistance R1 changing with the temperature from the measured resistance R2 to obtain the internal resistance R3 after the actual aging of the battery, and obtaining the standard internal resistance R of the battery through an information obtaining module;
a4, the ratio of R3 to R is calculated through a calculation module, so that the aging degree of the battery is obtained, when the battery works, the temperature rises, the internal resistance of the battery is increased, the internal resistance value R1 of the temperature change is removed, the accuracy of the internal resistance of the battery after actual aging is guaranteed, the interference of temperature rise is reduced, and the accuracy of the aging degree of the battery is facilitated.
Example 3
As another preferred embodiment of the present invention, the difference from embodiment 1 is that when the search module searches, the search module searches for data corresponding to voltage in the database, then the search module searches for data corresponding to current in the searched data and records the data as first data, then the search module searches for data corresponding to temperature and humidity in the first data and records the data as second data, and finally the search module searches for data corresponding to aging in the second data, and searches again from the searched data, so that the number of searches is reduced, and the time required by the search is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The detection system for the electric quantity of the battery comprises a controller and is characterized in that the controller is in signal connection with an information acquisition module, a temporary storage unit, a search module, a voltage measurement module, a current measurement module, a temperature measurement module, a humidity measurement module and an aging detection unit, the search module is electrically connected with a database, the database is in signal connection with a pasting module, the pasting module is electrically connected with a clearing module, a microcontroller and a storage module, the storage module is in signal connection with an average value module, the average value module is in signal connection with an output module, the output module is in signal connection with a display module, and the display module, the output module, the average value module, the storage module, the pasting module and the clearing module are in signal connection with the microcontroller;
the aging detection unit comprises a search module, a copy module, an internal resistance measurement module and a calculation module, wherein the search module, the copy module, the internal resistance measurement module and the calculation module are in signal connection with the controller, the search module is in signal connection with the copy module, and the search module is in signal connection with a resistance database.
2. The battery power detection system of claim 1, wherein the temporary storage module comprises a voltage data storage module, a current data storage module, a temperature data storage module, a humidity data storage module, and an aging data storage module.
3. The battery level detection system of claim 1, wherein the database is signally connected to an expansion module and a cloud database.
4. The system for detecting battery power according to claim 1, wherein the information acquiring module includes information about internal resistance of the battery, information about type of the battery, a standard voltage of the battery, and a standard current of the battery.
5. The method for detecting battery power according to any one of claims 1-4, characterized by comprising the following steps:
s1, measuring the voltage, the current, the temperature, the humidity and the aging degree of the battery through a voltage measuring module, a current measuring module, a temperature measuring module and a humidity measuring and aging measuring unit;
s2, storing the measurement result through the temporary storage unit, searching data matched with the measurement result in the database through the searching module, copying and pasting the inquired data through the pasting module, and storing the data in the storage module;
and S3, repeating the steps S1 and S2 for 5-7 times, storing the result in a storage module, taking out the average value through an average value module, outputting through an output module, and finally displaying through a display module.
6. The method of claim 5, wherein the step of measuring the degree of aging comprises the steps of:
a1, by measuring the temperature of the battery, searching the internal resistance value R1 of the normal battery changing along with the temperature in the resistance database through a searching module;
a2, measuring an internal resistance value R2 after the battery is aged through an internal resistance measuring module;
a3, subtracting the internal resistance R1 changing with the temperature from the measured resistance R2 to obtain the internal resistance R3 after the actual aging of the battery, and obtaining the standard internal resistance R of the battery through an information obtaining module;
and A4, calculating the ratio of R3 to R by a calculation module, thereby obtaining the aging degree of the battery.
7. The method according to claim 5, wherein when the search module searches, the search module searches for data corresponding to the voltage in the database, then the search module searches for data corresponding to the current in the searched data and records the data as the first data, then the search module searches for data corresponding to the temperature and humidity in the first data and records the data as the second data, and finally the search module searches for data corresponding to the aging in the second data.
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| CN201911291372.3A CN111077453A (en) | 2019-12-16 | 2019-12-16 | Battery electric quantity detection system and method |
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| CN201911291372.3A CN111077453A (en) | 2019-12-16 | 2019-12-16 | Battery electric quantity detection system and method |
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Cited By (1)
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| CN111913118A (en) * | 2020-09-04 | 2020-11-10 | 湖州快驴科技有限公司 | Detection method capable of detecting battery history information |
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Application publication date: 20200428 |