CN115378056A - Battery type identification method and identification device - Google Patents
Battery type identification method and identification device Download PDFInfo
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- CN115378056A CN115378056A CN202110536346.3A CN202110536346A CN115378056A CN 115378056 A CN115378056 A CN 115378056A CN 202110536346 A CN202110536346 A CN 202110536346A CN 115378056 A CN115378056 A CN 115378056A
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 238000007600 charging Methods 0.000 claims abstract description 228
- 238000004590 computer program Methods 0.000 claims description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 22
- 229910052744 lithium Inorganic materials 0.000 claims description 22
- 239000002253 acid Substances 0.000 claims description 18
- 230000009467 reduction Effects 0.000 claims description 12
- 238000005474 detonation Methods 0.000 abstract description 6
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- 238000010586 diagram Methods 0.000 description 9
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- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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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
- H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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Abstract
The application is applicable to the technical field of battery charging, and provides a battery type identification method and an identification device, wherein the identification method comprises the following steps: charging the battery to be identified with a constant first charging voltage; determining the battery type of the battery to be identified according to first charging currents output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current; and stopping charging after a preset time length, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset moments. In the above scheme, different battery types are distinguished by the first charging current and/or the battery voltage. The charging logic of the charging equipment is prevented from being mismatched with the battery type, so that the conditions of damage of a battery protection board, overcharge of the battery, overhigh charging voltage, short circuit of the battery voltage or detonation are avoided.
Description
Technical Field
The present application relates to the field of battery charging technologies, and in particular, to a method and an apparatus for identifying a battery type.
Background
The battery is a common component for generating electric energy, and is widely applied to various mobile devices. The types of batteries are various, including: lithium batteries, lead-acid batteries, nickel-chromium batteries, and the like. Different batteries have different electrical characteristics, and therefore require different charging logics (charging logics refer to specific charging voltage, charging current and other electrical parameters for differentially charging different types of batteries).
However, the conventional charging device cannot accurately identify the battery type, so the charging logic of the charging device is often not matched with the battery type, and the situations of damage to the battery protection board, overcharge of the battery, overhigh charging voltage, short circuit or explosion of the battery voltage, etc. are caused, which is a technical problem to be solved urgently.
Disclosure of Invention
In view of this, embodiments of the present application provide a method, an apparatus, a charging device and a computer readable storage medium for identifying a battery type, which can solve the technical problem that a conventional charging device cannot accurately identify a battery type, so that a charging logic of the charging device is often not matched with the battery type, thereby causing a damage to a battery protection board, an overcharge to the battery, an excessively high charging voltage, a short circuit or a detonation of the battery voltage.
A first aspect of an embodiment of the present application provides a method for identifying a battery type, where the method includes:
charging the battery to be identified with a constant first charging voltage;
determining the battery type of the battery to be identified according to first charging currents output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current;
and stopping charging after a preset time length, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset moments.
A second aspect of an embodiment of the present application provides an apparatus for identifying a battery type, including:
the charging unit is used for charging the battery to be identified with a constant first charging voltage;
the first identification unit is used for determining the battery type of the battery to be identified according to first charging currents output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current;
and the second identification unit is used for stopping charging after a preset time length, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset moments.
A third aspect of embodiments of the present application provides a charging device, including a charging module, a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method according to the first aspect when executing the computer program.
A fourth aspect of embodiments of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the steps of the method according to the first aspect.
Compared with the prior art, the embodiment of the application has the beneficial effects that: when the charging equipment charges the battery to be identified with the constant first charging voltage, the first charging current output by the charging equipment presents different descending trends along with different types of batteries. And after the charging equipment stops charging, the battery voltage of the battery to be identified presents different descending trends along with different battery types. The present application distinguishes between different battery types with a first charging current and/or battery voltage. The charging logic of the charging equipment is prevented from being mismatched with the battery type, so that the conditions of damage of a battery protection board, overcharge of the battery, overhigh charging voltage, short circuit of the battery voltage or detonation are avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic flow chart of a method for identifying a battery type provided in the present application;
fig. 2 is a schematic diagram illustrating a first charging current drop trend of a lithium battery provided by the present application;
FIG. 3 is a schematic diagram illustrating a first charging current reduction trend of a lead-acid battery provided by the present application;
fig. 4 shows a specific schematic flowchart of step 102 in a method for identifying a battery type provided in the present application;
fig. 5 is a specific schematic flowchart illustrating step 1021 in a battery type identification method provided in the present application;
FIG. 6 is a specific schematic flowchart illustrating step 103 of a method for identifying a battery type provided by the present application;
fig. 7 is a specific schematic flowchart 1034 of a method for identifying a battery type provided in the present application;
fig. 8 is a specific schematic flowchart illustrating step B5 in a battery type identification method provided in the present application;
fig. 9 is a schematic diagram illustrating a device for identifying a battery type provided by the present application;
fig. 10 is a schematic diagram of a charging device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
The embodiment of the application provides a battery type identification method, an identification device, a charging device and a computer readable storage medium, which can solve the technical problems that the traditional charging device cannot accurately identify the battery type, so that the charging logic of the charging device is often not matched with the battery type, and further the conditions of battery protection board damage, battery overcharge, overhigh charging voltage, battery voltage short circuit or detonation and the like are caused.
Firstly, the application provides a method for identifying a battery type, which specifically comprises the following steps:
referring to fig. 1, fig. 1 shows a schematic flow chart of a battery type identification method provided in the present application. As shown in fig. 1, the identification method may include the steps of:
step 101, charging a battery to be identified with a constant first charging voltage.
When the charging equipment continuously charges the battery to be identified, the battery voltage of the battery to be identified continuously rises along with the rise of the electric quantity of the battery to be identified. Therefore, when the charging device charges the battery to be identified with the constant first charging voltage, the first charging current of the charging device is continuously reduced. And the batteries to be identified of different battery types have certain difference or regularity for the first charging current descending trend.
For example: as the electric quantity of the battery increases, the first charging current of the lithium battery uniformly decreases, and a first charging current decreasing curve of the lithium battery is similar to a straight line, please refer to fig. 2, and fig. 2 shows a schematic diagram of a first charging current decreasing trend of the lithium battery provided by the present application. Fig. 2 is only an example of the first charging current decreasing trend of the lithium battery, and does not represent the actual first charging current decreasing trend of the lithium battery, and the actual first charging current decreasing trend of the lithium battery is not regular and has small fluctuation.
Another example is: when the lead-acid battery increases along with the electric quantity of the battery, the first charging current decreasing amplitude distribution is not uniform, the first charging current decreasing curve of the lead-acid battery is similar to an inverted parabola, please refer to fig. 3, and fig. 3 shows a schematic diagram of a first charging current decreasing trend of the lead-acid battery provided by the application. As shown in fig. 3, the first charging current drop amplitude is large in the first 10 seconds, and gradually decreases after 10 seconds, wherein the drop is slow from the 40 th second to the 60 th second. Fig. 3 is only an example of a first charging current descending trend of the lead-acid battery, and does not represent a first charging current descending trend of an actual lead-acid battery, and the first charging current descending trend of the actual lead-acid battery is not regular and has small fluctuation.
Therefore, based on the above rule, the battery to be identified is charged by the constant first charging voltage, and the battery type of the battery to be identified is judged according to the first charging current descending trend.
The battery type includes, but is not limited to, a combination of one or more types of lithium batteries, lead-acid batteries, and nickel-chromium batteries.
Step 102, determining the battery type of the battery to be identified according to a plurality of first charging currents output to the battery to be identified at a plurality of first preset moments; or, the battery to be identified is charged with a constant second charging current.
The number of the first preset times can be determined according to actual requirements, and can be an even number multiple of 6, 8 or 10, and the like. In order to better explain the technical solution of the present application, the first charging current at 6 first preset times is taken as an example for explanation. It can be understood that when the number of the first preset times is 8 or 10, other numbers can be obtained by analogy, and thus, the description is omitted here.
Setting 6 first preset moments as t 1 =1 second, t 2 =2 seconds, t 3 =9 seconds, t 4 =10 seconds, t 5 =59 seconds and t 6 =60 seconds, the first charging current at 6 first preset times is I 1 、I 2 、I 3 、I 4 、I 5 And I 6 . The numerical value of the first preset time is only an example and is not limited at all. The first charging current reduction amplitude of the batteries to be identified with different battery types has certain regularity, so that the first charging current reduction amplitude can be determined according to I 1 、I 2 、I 3 、I 4 、I 5 And I 6 The current drop amplitude betweenThe battery type of the battery to be identified is determined. The manner in which the battery type is determined based on the decreasing magnitude of the first charging current is as follows in the alternative embodiment of fig. 4:
as an alternative embodiment of the present application, step 102 includes steps 1021 to 1023 as follows. Referring to fig. 4, fig. 4 is a specific schematic flowchart illustrating step 102 in a method for identifying a battery type according to the present application.
Step 1021, calculating a first current drop amplitude and a second current drop amplitude of different time periods according to the plurality of first charging currents; the time period corresponding to the first current drop amplitude is earlier than the time period of the second current drop amplitude.
The calculation method for the current drop amplitude comprises two methods:
mode (1): the slope formed between the first charging current and time is used as the current drop amplitude. For example: first current drop = I 2 -I 1 /t 2 -t 1 Second current drop = I 4 -I 3 /t 4 -t 3 Third current drop amplitude = I 5 -I 6 /t 5 -t 6 。
Mode (2): as an alternative embodiment of the present application, the first charging currents at a plurality of first preset times are arranged according to a time sequence relationship, and respectively: a first current I 1 A second current I 2 A third current I 3 A fourth current I 4 A fifth current I 5 And a sixth current I 6 Step 1021 includes the following steps A1 to A5. Referring to fig. 5, fig. 5 is a schematic flowchart illustrating step 1021 in a method for identifying a battery type according to the present application.
Step A1, a first difference between the second current and the first current is calculated.
Step A2, calculating a second difference between the fourth current and the third current.
Step A3, calculating a third difference between the sixth current and the fifth current.
I.e. the first difference down 2 ＝I 2 -I 1 Second difference down 10 ＝I 4 -I 3 Third difference down 60 ＝I 6 -I 5 。
Step A4, calculating a fourth difference between the first difference and the second difference, and dividing the fourth difference by the first difference to obtain the first current drop amplitude.
First current reduction Id 10 ＝(down 2 -down 10 )/down 2 。
Step A5, calculating a fifth difference between the first difference and the third difference, and dividing the fifth difference by the first difference to obtain the second current drop amplitude.
Second current reduction Id 60 ＝(down 2 -down 60 )/down 2 。
Step 1022, if the first current drop amplitude is greater than three times the second current drop amplitude, it is determined that the battery type of the battery to be identified is a lithium battery.
Based on the characteristic of the current reduction amplitude of the lithium battery, when the first current reduction amplitude Id is generated 10 A second current reduction Id greater than three times 60 And then, confirming that the battery type of the battery to be identified is a lithium battery.
As an alternative embodiment of the present application, in order to prevent the damage of the battery caused by the improper charging logic, the charging may be stopped after the charging current is less than a certain value. For example: when the charging current is less than I 2 At one tenth of the time, the charging is stopped. After determining the battery type of the battery to be identified, a charging logic matching the battery type is then selected. The charging logic refers to charging parameters such as charging voltage, charging current and charging time length output by the charging device.
And 1023, if the first current drop amplitude is not more than three times of the second current drop amplitude, charging the battery to be identified with a constant second charging current, and executing the subsequent steps.
When the first current decreasesAmplitude Id 10 A second current drop Id of not more than three times 60 When the battery type indicating the battery to be identified may not be a lithium battery.
It should be noted that, in an actual application scenario, there may be situations such as unstable charging voltage, and therefore, it is not possible to accurately determine the battery type of the battery to be identified. I.e. when the first current decreases by an amount Id 10 A second current drop Id of not more than three times 60 The battery type that does not represent the battery to be identified is not necessarily a lithium battery. Further determination is required according to more parameter information, so that the charging mode is changed in step 1023, the battery to be identified is charged with a constant second charging current, and subsequent steps are performed to accurately determine the battery type.
And 103, stopping charging after a preset time, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset moments.
After the charging is stopped, the battery voltage in the batteries to be identified of different battery types shows different descending trends. For example: the voltage drop amplitude of the lithium battery is small and stable; while the battery voltage of a lead-acid battery decreases by a relatively large amount and continues to decrease over time.
Therefore, based on the rule, the charging is stopped after the preset time, and the battery type of the battery to be identified is judged according to the battery voltage of the battery to be identified at a plurality of second preset moments. In order to improve the accuracy, the battery type may be determined by combining the battery voltages at the second predetermined times and the first charging currents.
The collection number of the second preset moments can be determined according to actual requirements, and can be 3, 4 or 5. In order to better explain the technical solution of the present application, the battery voltage at 3 second preset times is taken as an example for explanation. It can be understood that when the number of the second preset times is 4 or 5, the second preset times can be obtained by analogy, and thus, the description is omitted here.
Let 3 second predetermined moments be t 7 =10 seconds, t 8 =60 seconds and t 9 For =300 seconds, the battery voltage at 3 second preset times is V 1 、V 2 And V 3 . It should be noted that, the above-mentioned numerical value of the second preset time is only an example and is not limited at all. Because the battery voltage of the batteries to be identified of different battery types has certain regularity, the voltage can be determined according to V 1 、V 2 And V 3 The voltage drop amplitude therebetween determines the battery type of the battery to be identified. Or, the manner in which the battery type is determined from the battery voltage and/or the first charging current. The manner in which the battery type is determined is as shown in the alternative embodiment of fig. 6 below:
as an alternative embodiment of the present application, the battery voltages at the second preset times are arranged according to a time sequence relationship as follows: first battery voltage V 1 A second battery voltage V 2 And a third battery voltage V 3 Step 103 includes steps 1031 to 1033 as follows. Referring to fig. 6, fig. 6 is a specific schematic flowchart illustrating step 103 in a method for identifying a battery type according to the present application.
Step 1031 of calculating a sixth difference value between the second charging voltage and the battery voltage; the second charging voltage is a charging voltage output to the battery to be identified when the charging is stopped.
Obtaining a second charging voltage V output by the charging equipment when the charging is stopped 0 . A second charging voltage V 0 As a reference value, a voltage difference of the plurality of cell voltages is calculated.
Step 1032 calculates a seventh difference between the second charging voltage and the second battery voltage.
Step 1033, an eighth difference between the second charging voltage and the third battery voltage is calculated.
I.e. the sixth difference delta 10 ＝V 0 -V1, seventh difference delta 60 ＝V 0 -V 2 Eighth difference delta 300 ＝V 0 -V 3 。
Step 1034, determining the battery type of the battery to be identified according to the sixth difference, the seventh difference, the eighth difference and the plurality of first charging currents.
May be directly dependent on the sixth difference delta 10 Delta of the seventh difference 60 And an eighth difference delta 300 And determining the battery type of the battery to be identified. Or, according to the sixth difference delta 10 Delta of the seventh difference 60 The eighth difference delta 300 And a plurality of first charging currents, determining the battery type of the battery to be identified. Or, according to the sixth difference value delta 10 Delta of the seventh difference 60 And a eighth difference delta 300 And calculating the voltage drop amplitude, and determining the battery type of the battery to be identified according to the voltage drop amplitude. Or determining the battery type of the battery to be identified according to the voltage drop amplitude and the plurality of first charging currents. The specific judgment manner is as shown in the following alternative embodiment of fig. 7:
as an alternative embodiment of the present application, step 1034 includes the following steps B1 to B4. Referring to fig. 7, fig. 7 is a specific schematic flowchart illustrating step 1034 of the method for identifying a battery type according to the present application.
And B1, calculating a ninth difference value between the seventh difference value and the sixth difference value, and dividing the ninth difference value by the sixth difference value to obtain a first voltage drop amplitude.
And B2, calculating a tenth difference value between the eighth difference value and the sixth difference value, and dividing the tenth difference value by the sixth difference value to obtain a second voltage drop amplitude.
According to a sixth difference delta 10 Seventh difference delta 60 And a eighth difference delta 300 And calculating the first voltage drop amplitude and the second voltage drop amplitude. And determining the battery type according to the first voltage drop amplitude and the second voltage drop amplitude. Or determining the battery type according to the first voltage drop amplitude and the second voltage drop amplitude and the plurality of first charging currents.
First voltage drop amplitude D 60 ＝(delta 60 -delta 10 )/delta 10 。
Second voltage drop amplitude D 300 ＝(delta 300 -delta 10 )/delta 10 。
In order to better represent the voltage drop amplitude, the first voltage drop amplitude and the second voltage drop amplitude may be multiplied by 100% respectively, and the voltage drop amplitude may be represented in percentage.
And step B3, acquiring a first current drop amplitude and a second current drop amplitude corresponding to the plurality of first charging currents.
In step B3, the first current drop amplitude and the second current drop amplitude calculated in step A4 and step A5 may be directly obtained.
And B4, determining the battery type of the battery to be identified according to the first voltage drop amplitude, the second voltage drop amplitude, the first current drop amplitude and the second current drop amplitude.
The specific determination manner in step B4 is as shown in the following alternative embodiment of fig. 8:
as an alternative embodiment of the present application, step B4 includes the following steps B41 to B46. Referring to fig. 8, fig. 8 is a specific schematic flowchart illustrating step B4 in the method for identifying a battery type according to the present application.
Step B41, if the first current descending amplitude is larger than the second current descending amplitude which is two times larger than the first current descending amplitude, and the first voltage descending amplitude and the second voltage descending amplitude are both larger than a first threshold value, determining that the battery type of the battery to be identified is a lead-acid battery.
I.e. Id 10 ＞2Id 60 Or Id 10 ＝3Id 60 And D is 60 And D 300 If the battery types of the batteries to be identified are all larger than a first threshold (for example, numerical values such as 0.5, 1, 50% or 100%, wherein the numerical value types of the first threshold are selected according to whether the voltage drop amplitude is a percentage system or not), determining that the battery types of the batteries to be identified are lead-acid batteries.
And B42, if the first current drop amplitude is smaller than the second current drop amplitude which is two times larger than the first current drop amplitude, and the first voltage drop amplitude and the second voltage drop amplitude are both larger than a second threshold value, determining that the battery type of the battery to be identified is a lead-acid battery.
I.e. 2Id 60 ＞Id 10 And D is 60 And D 300 And if the value is larger than a second threshold (for example, a value such as 0.5, 1, 50% or 100%, wherein the type of the value of the second threshold is selected according to whether the voltage drop amplitude is a percentage system or not), determining that the battery type of the battery to be identified is a lead-acid battery.
And B43, if the sixth difference, the seventh difference and the eighth difference are all larger than a third threshold, determining that the battery type of the battery to be identified is a lead-acid battery.
D 60 And D 300 Are all greater than a third threshold (e.g., a value of 0.5, 1, 50%, or 100%, where the type of value of the third threshold is selected based on whether the voltage drop is a percentage or not).
And step B44, if the first voltage drop amplitude and the second voltage drop amplitude are not larger than a fourth threshold, determining that the battery type of the battery to be identified is a lithium battery.
I.e. D 60 And D 300 If the number of the battery types to be identified is not greater than the fourth threshold (for example, the number of the fourth threshold is 0.5, 1, 50% or 100%, and the like), the battery type of the battery to be identified is determined to be a lithium battery.
As an optional embodiment of the present application, on the basis of the above optional embodiments, the method for determining the battery type further includes:
and step B45, if the first current drop amplitude is larger than the second current drop amplitude and the first current drop amplitude is smaller than the second current drop amplitude which is two times larger than the first current drop amplitude, returning to the step of charging the battery to be identified by the constant first charging voltage and the subsequent steps.
I.e. 2Id 60 ＞Id 10 ＞Id 60 Then the procedure returns to step 101 and the following steps.
In order to avoid the occurrence of meaningless dead cycles, the present application counts every time the step 101 and subsequent steps are executed in a loop (i.e., the loop is once, and the value is accumulated to be 1). When the accumulated value exceeds a preset number (such as 3 times), the loop execution is stopped.
And step B46, if the battery type of the battery to be identified is not determined, returning to execute the step of determining that the battery type of the battery to be identified is a lithium battery and the subsequent steps if the first current reduction amplitude is greater than three times of the second current reduction amplitude.
When the process proceeds to step B46, if the battery type of the battery to be identified cannot be determined according to the determination conditions in the preceding step, the process returns to step 1022 and the subsequent steps.
Since the battery type cannot be determined according to the technical scheme of the present application when the battery is severely aged, in order to avoid the occurrence of meaningless dead cycles, the present application performs counting (i.e., one cycle is performed, and the number is accumulated to be 1) each time the step 1022 and subsequent steps are performed cyclically. When the accumulated value exceeds a preset number (such as 3 times), the loop execution is stopped.
It should be noted that the execution logic of the determining step in this embodiment is a progressive execution logic, such as: if step B41 is not met, step B42 is executed, if step B42 is not met, step B43 is executed, and so on. I.e. the subsequent steps must not satisfy the preamble step.
As an optional embodiment of the present application, step B4 may further include other determining logic, such as: the first voltage drop amplitude, the second voltage drop amplitude, the first current drop amplitude and the second current drop amplitude can be combined at will, corresponding threshold values are preset, judgment logic is formed, and then the battery type of the battery to be identified is judged.
It should be noted that the scheme adopted in the present application can be divided into two major parts. One part is as follows: and detecting a first charging current of the charging equipment in a constant-voltage charging mode. The other part is as follows: and charging in a constant current mode, and detecting the battery voltage of the battery to be identified. Judging the battery type of the battery to be identified according to the first charging current; or, the battery type of the battery to be identified is jointly judged according to the first charging current and the battery voltage.
In this embodiment, when the charging device charges the battery to be identified with the constant first charging voltage, the first charging current output by the charging device presents different decreasing trends along with different types of batteries. And after the charging equipment stops charging, the battery voltage of the battery to be identified presents different descending trends along with different battery types. The present application distinguishes between different battery types with a first charging current and/or battery voltage. The charging logic of the charging equipment is prevented from being mismatched with the battery type, so that the conditions of damage of a battery protection board, overcharge of the battery, overhigh charging voltage, short circuit of the battery voltage or detonation are avoided.
Fig. 9 shows a schematic diagram of a battery type identification device 9 provided in the present application, and fig. 9 shows a schematic diagram of a battery type identification device provided in the present application, and the battery type identification device shown in fig. 9 includes:
a charging unit 91 for charging the battery to be identified with a constant first charging voltage;
the first identification unit 92 is configured to determine a battery type of the battery to be identified according to a first charging current output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current;
and the second identification unit 93 is configured to stop charging after a preset time period, and determine the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset times.
The application provides a device for identifying battery types, which distinguishes different battery types by a first charging current and/or a battery voltage. The charging logic of the charging equipment is prevented from being mismatched with the battery type, so that the conditions of damage of a battery protection board, overcharge of the battery, overhigh charging voltage, short circuit of the battery voltage or detonation are avoided.
Fig. 10 is a schematic diagram of a charging device according to an embodiment of the present invention. As shown in fig. 10, a charging device 10 of this embodiment includes: a charging module 1001, a processor 1002, a memory 1003 and a computer program 1004, such as a battery type identification program, stored in said memory 1003 and executable on said processor 1002. The processor 1002, when executing the computer program 1004, implements the steps in each of the above embodiments of the method for identifying a battery type, such as the steps 101 to 103 shown in fig. 1. Alternatively, the processor 1002, when executing the computer program 1004, implements the functions of the units in the device embodiments described above, such as the functions of the units 91 to 93 shown in fig. 9.
Illustratively, the computer program 1004 may be divided into one or more units, which are stored in the memory 1003 and executed by the processor 1002 to implement the present invention. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 1004 in the charging device 10. For example, the computer program 1004 may be divided into an acquisition unit and a calculation unit, and the specific functions of each unit are as follows:
the charging unit is used for charging the battery to be identified with a constant first charging voltage;
the first identification unit is used for determining the battery type of the battery to be identified according to first charging currents output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current;
and the second identification unit is used for stopping charging after a preset time length, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset moments.
The charging device may include, but is not limited to, a charging module 1001, a processor 1002, and a memory 1003. Those skilled in the art will appreciate that fig. 10 is merely an example of one type of charging device 10 and is not intended to limit one type of charging device 10 and may include more or fewer components than shown, or some components may be combined, or different components, for example, the one type of charging device may also include input-output devices, network access devices, buses, etc.
The charging module 1001 is used to control a charging voltage, a charging current, a charging period, and the like, which are output to a battery to be identified.
The Processor 1002 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 1003 may be an internal storage unit of the charging device 10, such as a hard disk or a memory of the charging device 10. The memory 1003 may also be an external storage device of the charging device 10, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, provided on the charging device 10. Further, the memory 1003 may also include both an internal storage unit and an external storage device of the charging device 10. The memory 1003 is used for storing the computer program and other programs and data required by the one kind of charging device. The memory 1003 may also be used to temporarily store data that has been output or is to be output.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by functions and internal logic of the process, and should not constitute any limitation to the implementation process of the embodiments of the present application.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
It should be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is only used for illustration, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the foregoing method embodiments.
The embodiments of the present application provide a computer program product, which when running on a mobile terminal, enables the mobile terminal to implement the steps in the above method embodiments when executed.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/charging device, a recording medium, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In some jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and proprietary practices.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/network device and method may be implemented in other ways. For example, the above-described apparatus/network device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to monitoring ". Similarly, the phrase "if it is determined" or "if [ a described condition or event ] is monitored" may be interpreted depending on the context to mean "upon determining" or "in response to determining" or "upon monitoring [ a described condition or event ]" or "in response to monitoring [ a described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A method for identifying a battery type, the method comprising:
charging the battery to be identified with a constant first charging voltage;
determining the battery type of the battery to be identified according to first charging currents output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current;
and stopping charging after a preset time length, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset moments.
2. The identification method according to claim 1, wherein the battery type of the battery to be identified is determined according to a first charging current output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current, including:
calculating a first current drop amplitude and a second current drop amplitude of different time periods according to the plurality of first charging currents; the time period corresponding to the first current descending amplitude is earlier than the time period of the second current descending amplitude;
if the first current reduction amplitude is larger than three times of the second current reduction amplitude, determining that the battery type of the battery to be identified is a lithium battery;
and if the first current drop amplitude is not more than three times of the second current drop amplitude, charging the battery to be identified by constant second charging current, and executing subsequent steps.
3. The identification method according to claim 2, wherein the first charging currents at a plurality of the first preset times are arranged according to a time sequence relationship, and respectively: a first current, a second current, a third current, a fourth current, a fifth current, and a sixth current;
the calculating a first current drop amplitude and a second current drop amplitude for different time periods according to the plurality of first charging currents includes:
calculating a first difference between the second current and the first current;
calculating a second difference between the fourth current and the third current;
calculating a third difference between the sixth current and the fifth current;
calculating a fourth difference between the first difference and the second difference, and dividing the fourth difference by the first difference to obtain the first current drop amplitude;
and calculating a fifth difference value between the first difference value and the third difference value, and dividing the fifth difference value by the first difference value to obtain the second current drop amplitude.
4. The identification method according to claim 1, wherein the battery voltages at the second predetermined times are arranged according to the time sequence relationship as follows: a first battery voltage, a second battery voltage, and a third battery voltage;
the stopping charging after the preset time length, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging currents of the battery to be identified at a plurality of second preset moments, includes:
calculating a sixth difference between the second charging voltage and the battery voltage; the second charging voltage is the charging voltage output to the battery to be identified when the charging is stopped;
calculating a seventh difference between a second charging voltage and the second battery voltage;
calculating an eighth difference between the second charging voltage and the third battery voltage;
and determining the battery type of the battery to be identified according to the sixth difference, the seventh difference, the eighth difference and the plurality of first charging currents.
5. The identification method according to claim 4, wherein said determining the battery type of the battery to be identified according to the sixth difference, the seventh difference, the eighth difference and the plurality of the first charging currents comprises:
calculating a ninth difference between the seventh difference and the sixth difference, and dividing the ninth difference by the sixth difference to obtain a first voltage drop amplitude;
calculating a tenth difference value between the eighth difference value and the sixth difference value, and dividing the tenth difference value by the sixth difference value to obtain a second voltage drop amplitude;
acquiring a first current drop amplitude and a second current drop amplitude corresponding to a plurality of first charging currents;
and determining the battery type of the battery to be identified according to the first voltage drop amplitude, the second voltage drop amplitude, the first current drop amplitude and the second current drop amplitude.
6. The identification method according to claim 5, wherein the determining the battery type of the battery to be identified according to the first voltage drop amplitude, the second voltage drop amplitude, the first current drop amplitude and the second current drop amplitude comprises:
if the first current drop amplitude is larger than the second current drop amplitude which is two times larger than the first current drop amplitude, and the first voltage drop amplitude and the second voltage drop amplitude are both larger than a first threshold value, determining that the battery type of the battery to be identified is a lead-acid battery;
if the first current drop amplitude is not larger than two times of the second current drop amplitude, and the first voltage drop amplitude and the second voltage drop amplitude are both larger than a second threshold value, determining that the battery type of the battery to be identified is a lead-acid battery;
if the sixth difference, the seventh difference and the eighth difference are all larger than a third threshold, determining that the battery type of the battery to be identified is a lead-acid battery;
and if the first voltage drop amplitude and the second voltage drop amplitude are not larger than a fourth threshold, determining that the battery type of the battery to be identified is a lithium battery.
7. The identification method according to claim 6, wherein after determining that the battery type of the battery to be identified is a lithium battery if the first voltage drop amplitude and the second voltage drop amplitude are not greater than the fourth threshold, the method further comprises:
if the first current drop amplitude is larger than the second current drop amplitude and the first current drop amplitude is smaller than the second current drop amplitude which is two times larger than the first current drop amplitude, returning to the step of charging the battery to be identified by the constant first charging voltage and the subsequent steps;
and if the battery type of the battery to be identified is not determined, returning to execute the step of determining that the battery type of the battery to be identified is a lithium battery and the subsequent steps if the first current drop amplitude is greater than three times of the second current drop amplitude.
8. An apparatus for identifying a battery type, the apparatus comprising:
the charging unit is used for charging the battery to be identified with a constant first charging voltage;
the first identification unit is used for determining the battery type of the battery to be identified according to first charging currents output to the battery to be identified at a plurality of first preset moments; or, charging the battery to be identified with a constant second charging current;
and the second identification unit is used for stopping charging after a preset time length, and determining the battery type of the battery to be identified according to the battery voltage and/or the first charging current of the battery to be identified at a plurality of second preset moments.
9. A charging device, comprising a charging module, a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of a method according to any one of claims 1 to 7.
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| CN202110536346.3A CN115378056A (en) | 2021-05-17 | 2021-05-17 | Battery type identification method and identification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117301935A (en) * | 2023-11-28 | 2023-12-29 | 北京中能融创能源科技有限公司 | Charging control method and system based on voltage progressive excitation |
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| JP2009054373A (en) * | 2007-08-24 | 2009-03-12 | Toyota Motor Corp | Battery identification method and battery identification device |
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| JPH07326388A (en) * | 1994-05-30 | 1995-12-12 | Shin Kobe Electric Mach Co Ltd | Charging method and charging device for secondary battery |
| JP2009054373A (en) * | 2007-08-24 | 2009-03-12 | Toyota Motor Corp | Battery identification method and battery identification device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117301935A (en) * | 2023-11-28 | 2023-12-29 | 北京中能融创能源科技有限公司 | Charging control method and system based on voltage progressive excitation |
| CN117301935B (en) * | 2023-11-28 | 2024-02-13 | 北京中能融创能源科技有限公司 | Charging control method and system based on voltage progressive excitation |
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