CN114019394A - Battery quick-charging map testing method, device and equipment - Google Patents
Battery quick-charging map testing method, device and equipment Download PDFInfo
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- 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
- 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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- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
The invention discloses a method for testing a quick battery charging map, which comprises the following steps: acquiring the open-circuit voltage and the internal resistance of the battery under the target condition; inquiring corresponding target current multiplying power in a quick charging map based on the target temperature condition and the open-circuit voltage, and calculating the product of the target current multiplying power and the battery capacity to obtain charging current; and calculating a charging voltage corresponding to the charging current based on the open-circuit voltage and the internal resistance of the battery, comparing the charging voltage with the protection voltage, and adjusting the target current multiplying power in the quick charging map if the charging voltage exceeds the protection voltage so as to enable the charging voltage not to be larger than the protection voltage. According to the technical scheme provided by the invention, the multiplying power numerical value in the quick charging map is accurately adjusted by calculating the error between the charging voltage and the protection voltage under the target condition, so that the safety of the battery during charging is ensured.
Description
Technical Field
The invention relates to the field of new energy battery design, in particular to a method, a device and equipment for testing a battery quick charging map.
Background
With the popularization of battery quick-charging technology, more and more battery firing events occur, and most of the firing events occur in a battery charging stage. The safety performance of charging the battery directly affects the life safety and public safety of the user. In order to shorten the charging time, the currently common quick charging technology is to increase the rate of charging current, which can cause the temperature to rise sharply during the charging process, and meanwhile, the large-rate charging is also accompanied with the influence of the battery safety. The quick-charging map is a charging meter for recording the multiplying power of the charging current of the battery under the conditions of different terminal voltages and different temperatures, so how to ensure that the multiplying power value in the quick-charging map can amplify the current under safe and reasonable conditions, thereby realizing quick charging and being one of the technical difficulties for preventing potential safety hazards in the charging process of the battery.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, an apparatus, and a device for testing a battery quick-charging map, so as to avoid that a charging voltage exceeds a normal voltage use range due to an excessively high current multiplying factor in the quick-charging map, and improve the safety of battery charging.
According to a first aspect, the present invention provides a method for testing a battery quick charge map, the method comprising: acquiring an open-circuit voltage and an internal resistance of a battery under target conditions, wherein the target conditions comprise a target temperature condition and a target SOC condition; inquiring corresponding target current multiplying power in the quick charging map based on the target temperature condition and the open circuit voltage, and calculating the product of the target current multiplying power and the battery capacity to obtain charging current; and calculating a charging voltage corresponding to the charging current based on the open-circuit voltage and the internal resistance of the battery, comparing the charging voltage with a protection voltage, and if the charging voltage exceeds the protection voltage, adjusting the target current multiplying power in the quick-charging map so as to enable the charging voltage not to be larger than the protection voltage.
Optionally, the acquiring the open-circuit voltage and the internal resistance of the battery comprises: querying the open circuit voltage in a standard open circuit voltage map based on the target temperature condition and the target SOC condition; the internal resistance is queried in a standard internal resistance map based on the target temperature condition and the target SOC condition.
Optionally, the calculating a charging voltage corresponding to the charging current based on the open-circuit voltage and the internal resistance of the battery includes: substituting the charging current, the open-circuit voltage and the battery internal resistance into a formula: and the charging voltage is equal to the open-circuit voltage + the charging current multiplied by the internal resistance of the battery, and the charging voltage of the battery is obtained.
Optionally, the adjusting the target current multiplying power in the fast charging map includes: adjusting the target current rate based on the protection voltage, the open-circuit voltage, the battery internal resistance, and the battery capacity.
Optionally, the adjusting the target current magnification based on the protection voltage, the open-circuit voltage, the battery internal resistance, and the battery capacity includes: substituting the protection voltage, the open-circuit voltage, the battery internal resistance and the battery capacity into a formula:
obtaining a first current multiplying power; and replacing the corresponding target current multiplying power in the quick charge map by using the first current multiplying power to serve as a new current multiplying power corresponding to the target condition in the quick charge map.
Optionally, the test method is performed in two states, namely, a cell BOL state and a cell EOL state.
Optionally, the method further comprises: extracting a plurality of test conditions generated by matching a preset temperature interval and a preset SOC interval; and traversing all the test conditions based on the steps from the acquisition of the open-circuit voltage and the internal resistance of the battery to the adjustment of the target current multiplying power in the quick-charge map so as to generate the quick-charge map matched with all the test conditions.
According to a second aspect, the present invention provides a battery quick-charging map testing apparatus, comprising: the battery protection device comprises a parameter acquisition module, a parameter storage module and a control module, wherein the parameter acquisition module is used for acquiring the open-circuit voltage and the internal resistance of a battery under a target condition, and the target condition comprises a target temperature condition and a target SOC condition; the current calculation module is used for inquiring corresponding target current multiplying power in the quick charging map based on the target temperature condition and the open circuit voltage, and calculating the product of the target current multiplying power and the battery capacity to obtain charging current; and the test adjusting module is used for calculating a charging voltage corresponding to the charging current based on the open-circuit voltage and the internal resistance of the battery, comparing the charging voltage with a protection voltage, and adjusting the target current multiplying power in the quick charging map if the charging voltage exceeds the protection voltage so as to enable the charging voltage not to be larger than the protection voltage.
According to a third aspect, the present invention provides a battery quick-charging map testing apparatus, comprising: a memory and a processor, the memory and the processor being communicatively coupled to each other, the memory having stored therein computer instructions, and the processor performing the method of the first aspect, or any one of the optional embodiments of the first aspect, by executing the computer instructions.
According to a fourth aspect, the present invention provides a computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of the first aspect, or any one of the optional implementations of the first aspect.
The technical scheme provided by the application has the following advantages:
according to the technical scheme, the corresponding target current multiplying power in the quick charging map is extracted according to the open-circuit voltage and the target temperature condition of the battery, then the charging current calculated based on the capacity and the current multiplying power of the battery is combined with the open-circuit voltage and the internal resistance of the battery, and the charging voltage corresponding to the charging current obtained through calculation is compared with the protection voltage. If the charging voltage exceeds the protection voltage, the current multiplying power in the quick charging map is correspondingly adjusted, so that the charging voltage is not greater than the protection voltage, the safety of using the current multiplying power in the charging map under the target condition is improved, and the danger of fire accidents caused by overhigh battery temperature due to the fact that the voltage exceeds the protection range is avoided.
In addition, the battery open-circuit voltage and the battery internal resistance under the target condition are obtained through inquiring the standard open-circuit voltage map and the standard internal resistance map, and the data accuracy of subsequent calculation is guaranteed. On the other hand, the test of the quick charge map not only sets various test conditions, but also tests in the BOL state and the EOL state of the battery cell according to each test condition, so that the quick charge map used by the battery cell in different service life states and under different conditions can be safely and stably used, the completeness of the test is ensured, and the safety of the battery during charging is further improved.
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The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic diagram illustrating steps of a method for testing a battery rapid charging map according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating an exemplary configuration of a battery rapid-charge map according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating a battery quick-charging map testing apparatus according to an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of an electronic device in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, in one embodiment, a method for testing a battery quick charge map specifically includes the following steps:
step S1: under target conditions, an open-circuit voltage and an internal resistance of the battery are acquired, and the target conditions include a target temperature condition and a target SOC condition. Specifically, as shown in fig. 2, the fast charge map is a two-dimensional table composed of different temperature conditions and different cell voltage conditions, and data in the table is current multiplying power. Before testing the current multiplying power Of a specified position, specific position conditions, namely the open-circuit voltage and the temperature Of the battery, need to be known, and the open-circuit voltage Of the battery is related to the temperature and the SOC (State Of Charge) Of the battery, so the open-circuit voltage Of the battery can be obtained through experiments according to the specified temperature conditions and SOC conditions. The internal resistance of the battery is required to be used in subsequent calculation of the charging voltage of the battery, and the actual internal resistance of the battery is also related to the temperature and the SOC of the battery, so that the open-circuit voltage and the internal resistance of the battery can be simultaneously obtained through experiments based on target conditions. In one embodiment, it is inconvenient to obtain the open-circuit voltage and the internal resistance of the battery through experiments each time, and a large amount of time is wasted, so that in this embodiment, the open-circuit voltage is inquired in the standard open-circuit voltage map based on the target temperature condition and the target SOC condition, and the internal resistance is inquired in the standard internal resistance map based on the target temperature condition and the target SOC condition, so that the corresponding open-circuit voltage and the internal resistance parameter of the battery can be quickly and accurately obtained.
Step S2: and inquiring corresponding target current multiplying power in the quick charging map based on the target temperature condition and the open-circuit voltage, and calculating the product of the target current multiplying power and the battery capacity to obtain the charging current. Specifically, 1C, 2C, 0.2C, and the like used in charging and discharging of the battery have two meanings: on the one hand, C represents the capacity of the battery per se in Ah or mAh, and on the other hand, C is used to indicate the ratio of the magnitude of the charge and discharge current of the battery, i.e., the current multiplying power. Assuming the battery is 1000mAh, 1C charging is charging with 1000mA of current. Namely: the charge/discharge rate is the charge/discharge current/rated capacity, and for example, when the battery 20A having a rated capacity of 100Ah is discharged, the discharge rate is 0.2C. The battery charge-discharge rate C represents a measure of how fast the battery is charged and discharged. Thus, the charging current of the battery under the target condition is obtained by the product of the target current rate and the battery capacity.
Step S3: and calculating a charging voltage corresponding to the charging current based on the open-circuit voltage and the internal resistance of the battery, comparing the charging voltage with the protection voltage, and adjusting the target current multiplying power in the quick charging map if the charging voltage exceeds the protection voltage so as to enable the charging voltage not to be larger than the protection voltage. Specifically, in one embodiment, after the charging current of the battery is calculated, the charging current, the open-circuit voltage and the internal resistance of the battery are substituted into the formula: the charging voltage is equal to the open-circuit voltage + the charging current × the internal resistance of the battery. The charging voltage of the battery can be calculated, so that the comparison result of the charging voltage and the protection voltage of the battery is used as a reference, when the charging voltage exceeds the protection voltage, the current multiplying power given by the quick charging map is not appropriate, unsafe dangers such as battery ignition are easy to occur, the current multiplying power in the quick charging map needs to be adjusted, and the function of correcting inaccurate data in the quick charging map is achieved. In an embodiment, the adjusting of the charging rate in the fast charging map is performed based on the protection voltage, the open-circuit voltage, the internal resistance of the battery, and the capacity of the battery, and the specific adjustment formula is as follows:
the current multiplying power obtained by the formula is calculated, so that the charging voltage of the battery can be completely equal to the protection voltage during charging, the maximum current multiplying power and the charging speed are ensured under the condition that the protection voltage of the battery is not exceeded, the charging time of the battery is shortened as far as possible, and the charging efficiency is improved.
Specifically, in one embodiment, the testing steps are performed in two states of BOL (Beginning of Life) and EOL (End of Life) of the battery cell. Different cell states correspond to different battery capacities (generally, an EOL state is assumed to be when a battery life state reaches 80% of an initial state of the battery), so that under the same temperature and SOC conditions, the open-circuit voltage and the internal resistance of the battery are different, and thus, different battery fast-charging maps are provided. And (4) testing in steps S1-S3 at different service life stages to adjust the quick charging maps at different service life stages, so as to ensure that the battery can be stably and safely charged in the whole service life cycle.
Specifically, in an embodiment, a method for testing a battery quick charge map further includes the following steps:
the method comprises the following steps: and extracting a plurality of test conditions generated by matching the preset temperature interval and the preset SOC interval.
Step two: and traversing all the test conditions based on the steps from obtaining the open-circuit voltage and the internal resistance of the battery to adjusting the target current multiplying power in the quick-charge map so as to generate the quick-charge map matched with all the test conditions.
Specifically, the temperature change law of the environment where the battery is located is different for different geographic environments. Therefore, the temperature interval and the SOC interval can be preset by combining the change range of the actual external environment temperature, so that the test conditions are selected at preset intervals in the preset interval, all the test conditions are traversed by using the method of the steps S1-S3, the corresponding current multiplying power value in the fast charging map is modified, and the reliability of the fast charging map is guaranteed under the condition of the minimum test times according to different use scenes. For example: the battery system temperature operating interval is set, and at intervals of 0.1 ℃, T is [ T (1), T (2), …, T (m) ], and the SOC operating interval is set, at intervals of 0.1%, and SOC is [ SOC (1), SOC (2), …, SOC (n) ]. The traversal detection circulation mode is that the temperature T is used as a large circulation, the SOC is used as a small circulation, namely when the temperature T (1) is reached, the circulation is carried out from the SOC minimum value to the SOC maximum value in sequence for n times of detection, and after the temperature T (1) is detected, the circulation of the temperature T (2) is carried out until the SOC (n) in T (m) is detected, and m times of charge current multiplying factor detection is carried out. In the detection process, if the temperature and SOC required to be detected cannot be completely matched with the conditions in the standard open-circuit voltage map and the standard internal resistance map, a table look-up method of forward temperature interpolation, backward SOC interpolation and backward voltage interpolation is adopted. For example: assuming that the gradient of the temperature condition in the table is [ 0102030 ], the current temperature of the battery is 5 ℃, the forward interpolation of the temperature is to take the data in the row corresponding to 0 ℃, and the current multiplying power data corresponding to 5 ℃ is not obtained through linear calculation, because in the detection process, the current multiplying power is required to be ensured not to be changed frequently, on one hand, the battery performance plays a role in protection, on the other hand, the working difficulty of the battery management system is reduced, and the condition that the battery management system crashes due to the overlarge operation amount is prevented.
Through the steps, the method for testing the quick-charging map of the battery extracts the corresponding target current multiplying power in the quick-charging map according to the open-circuit voltage and the target temperature condition of the battery, and then compares the charging voltage corresponding to the charging current obtained through calculation with the protection voltage by combining the open-circuit voltage and the internal resistance of the battery based on the charging current calculated based on the capacity and the current multiplying power of the battery. If the charging voltage exceeds the protection voltage, the current multiplying power in the quick charging map is correspondingly adjusted, so that the charging voltage is not greater than the protection voltage, the safety of using the current multiplying power in the charging map under the target condition is improved, and the danger of fire accidents caused by overhigh battery temperature due to the fact that the voltage exceeds the protection range is avoided.
In addition, the battery open-circuit voltage and the battery internal resistance under the target condition are obtained through inquiring the standard open-circuit voltage map and the standard internal resistance map, and the data accuracy of subsequent calculation is guaranteed. On the other hand, the test of the quick charge map not only sets various test conditions, but also tests in the BOL state and the EOL state of the battery cell according to each test condition, so that the quick charge map used by the battery cell in different service life states and under different conditions can be safely and stably used, the completeness of the test is ensured, and the safety of the battery during charging is further improved.
As shown in fig. 3, this embodiment further provides a battery quick-charging map testing apparatus, which includes:
the parameter acquisition module 101 is configured to acquire an open-circuit voltage and an internal resistance of the battery under a target condition, where the target condition includes a target temperature condition and a target SOC condition. For details, refer to the related description of step S1 in the above method embodiment, and no further description is provided here.
And the current calculation module 102 is configured to query a corresponding target current multiplying factor in the fast charging map based on the target temperature condition and the open-circuit voltage, and calculate a product of the target current multiplying factor and the battery capacity to obtain the charging current. For details, refer to the related description of step S2 in the above method embodiment, and no further description is provided here.
And the test adjusting module 103 is configured to calculate a charging voltage corresponding to the charging current based on the open-circuit voltage and the battery internal resistance, compare the charging voltage with the protection voltage, and adjust a target current multiplying factor in the fast charging map if the charging voltage exceeds the protection voltage, so that the charging voltage is not greater than the protection voltage. For details, refer to the related description of step S3 in the above method embodiment, and no further description is provided here.
The battery quick-charging map testing device provided by the embodiment of the invention is used for executing the battery quick-charging map testing method provided by the embodiment, the implementation manner and the principle are the same, and the detailed content refers to the relevant description of the method embodiment and is not repeated.
Through the cooperation of the above components, the battery quick-charging map testing device provided by the application extracts the corresponding target current multiplying power in the quick-charging map through the open-circuit voltage and target temperature conditions of the battery, and then compares the charging voltage corresponding to the charging current obtained through calculation with the protection voltage by combining the open-circuit voltage and the internal resistance of the battery based on the charging current calculated based on the battery capacity and the current multiplying power. If the charging voltage exceeds the protection voltage, the current multiplying power in the quick charging map is correspondingly adjusted, so that the charging voltage is not greater than the protection voltage, the safety of using the current multiplying power in the charging map under the target condition is improved, and the danger of fire accidents caused by overhigh battery temperature due to the fact that the voltage exceeds the protection range is avoided.
In addition, the battery open-circuit voltage and the battery internal resistance under the target condition are obtained through inquiring the standard open-circuit voltage map and the standard internal resistance map, and the data accuracy of subsequent calculation is guaranteed. On the other hand, the test of the quick charge map not only sets various test conditions, but also tests in the BOL state and the EOL state of the battery cell according to each test condition, so that the quick charge map used by the battery cell in different service life states and under different conditions can be safely and stably used, the completeness of the test is ensured, and the safety of the battery during charging is further improved.
Fig. 4 shows a battery rapid charging map testing apparatus according to an embodiment of the present invention, where the apparatus includes a processor 901 and a memory 902, and the apparatus may be connected by a bus or by another way, and fig. 4 takes the example of connection by a bus as an example.
The memory 902, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the methods in the above-described method embodiments. The processor 901 executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory 902, that is, implements the methods in the above-described method embodiments.
The memory 902 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 901, and the like. Further, the memory 902 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 902 may optionally include memory located remotely from the processor 901, which may be connected to the processor 901 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more modules are stored in the memory 902, which when executed by the processor 901 performs the methods in the above-described method embodiments.
The specific details of the battery quick-charging map testing device may be understood by referring to the corresponding related descriptions and effects in the above method embodiments, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, and the implemented program can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A method for testing a quick battery charging map is characterized by comprising the following steps:
acquiring an open-circuit voltage and an internal resistance of a battery under target conditions, wherein the target conditions comprise a target temperature condition and a target SOC condition;
inquiring corresponding target current multiplying power in the quick charging map based on the target temperature condition and the open circuit voltage, and calculating the product of the target current multiplying power and the battery capacity to obtain charging current;
and calculating a charging voltage corresponding to the charging current based on the open-circuit voltage and the internal resistance of the battery, comparing the charging voltage with a protection voltage, and if the charging voltage exceeds the protection voltage, adjusting the target current multiplying power in the quick-charging map so as to enable the charging voltage not to be larger than the protection voltage.
2. The method of claim 1, wherein obtaining the open circuit voltage and the internal resistance of the battery comprises:
querying the open circuit voltage in a standard open circuit voltage map based on the target temperature condition and the target SOC condition;
the internal resistance is queried in a standard internal resistance map based on the target temperature condition and the target SOC condition.
3. The method of claim 1, wherein calculating the charging voltage corresponding to the charging current based on the open-circuit voltage and the internal battery resistance comprises:
substituting the charging current, the open-circuit voltage and the battery internal resistance into a formula:
charging voltage is equal to open circuit voltage + charging current multiplied by internal resistance of battery
Obtaining the charging voltage of the battery.
4. The method of claim 1, wherein the adjusting the target current rate in the fast charge map comprises:
adjusting the target current rate based on the protection voltage, the open-circuit voltage, the battery internal resistance, and the battery capacity.
5. The method of claim 4, wherein said adjusting the target current rate based on the protection voltage, the open circuit voltage, the battery internal resistance, and the battery capacity comprises:
substituting the protection voltage, the open-circuit voltage, the battery internal resistance and the battery capacity into a formula:
obtaining a first current multiplying power;
and replacing the corresponding target current multiplying power in the quick charge map by using the first current multiplying power to serve as a new current multiplying power corresponding to the target condition in the quick charge map.
6. The method of claim 1, wherein the testing method is performed in both the cell BOL and the cell EOL states, respectively.
7. The method of claim 6, further comprising:
extracting a plurality of test conditions generated by matching a preset temperature interval and a preset SOC interval;
and traversing all the test conditions based on the steps from the acquisition of the open-circuit voltage and the internal resistance of the battery to the adjustment of the target current multiplying power in the quick-charge map so as to generate the quick-charge map matched with all the test conditions.
8. The utility model provides a battery map testing arrangement that fills soon which characterized in that, the device includes:
the battery protection device comprises a parameter acquisition module, a parameter storage module and a control module, wherein the parameter acquisition module is used for acquiring the open-circuit voltage and the internal resistance of a battery under a target condition, and the target condition comprises a target temperature condition and a target SOC condition;
the current calculation module is used for inquiring corresponding target current multiplying power in the quick charging map based on the target temperature condition and the open circuit voltage, and calculating the product of the target current multiplying power and the battery capacity to obtain charging current;
and the test adjusting module is used for calculating a charging voltage corresponding to the charging current based on the open-circuit voltage and the internal resistance of the battery, comparing the charging voltage with a protection voltage, and adjusting the target current multiplying power in the quick charging map if the charging voltage exceeds the protection voltage so as to enable the charging voltage not to be larger than the protection voltage.
9. The utility model provides a battery fills map test equipment soon which characterized in that includes:
a memory and a processor communicatively coupled to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the method of any of claims 1-7.
10. A computer-readable storage medium having stored thereon computer instructions for causing a computer to thereby perform the method of any one of claims 1-7.
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|---|---|---|---|---|
| WO2024197918A1 (en) * | 2023-03-31 | 2024-10-03 | 华为技术有限公司 | Battery charging method and device |
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