CN117497892A - Temperature control type storage battery formation control method and device, charger and storage medium - Google Patents
Temperature control type storage battery formation control method and device, charger and storage medium Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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Abstract
The invention provides a temperature control type storage battery formation control method, a temperature control type storage battery formation control device, a charger and a storage medium. The method comprises the following steps: acquiring the current battery temperature and the current charging current in the battery formation process at the initial stage of battery formation; if the current battery temperature is less than or equal to the low-temperature threshold value, performing formation charging according to the low-temperature current; if the current battery temperature is greater than the low temperature threshold and the current battery temperature is less than the high temperature threshold, determining to perform chemical charging according to the low temperature current or the high temperature current according to the current charging current, wherein the low temperature current is greater than the high temperature current; and if the current battery temperature is greater than or equal to the high-temperature threshold value, performing formation charging according to the high-temperature current. The invention can shorten the formation time and ensure the temperature within the process range without adding new equipment.
Description
Technical Field
The invention relates to the technical field of lead-acid storage battery production, in particular to a formation control method and device for a temperature control storage battery, a charger and a storage medium.
Background
At present, a battery factory usually controls current and time through a charger to realize charging formation of a lead-acid storage battery, and in order to shorten formation time and improve production efficiency, a current increasing mode can be adopted to utilize a reverse acidification formation process. However, the relatively large charging current at the initial stage of formation causes the temperature to exceed the upper limit specified by the current production requirements, and in actual production, the control of the over-temperature is usually realized by increasing the circulating water flow, so that the control effect is limited.
The primary reason for the initial temperature rise in cell formation is analyzed by the exothermic reaction of the electrochemical reaction process, i.e. the heat generated by the current overcoming the polarized internal resistance, which mainly relates to concentration polarization, electrochemical polarization and ohmic polarization. The charge current is large in the initial formation stage, and the electrochemical reaction speed is increased, so that concentration polarization and chemical polarization are increased, and the temperature rise is obvious.
To control the initial temperature rise of the battery formation, it is necessary to eliminate or control the polarization of the battery. The current modes of eliminating or controlling polarization in the formation process mainly include pulse formation and acid recycle formation. The pulse formation mode is adopted, and a pulse charger is needed. The acid circulation formation mode which enables the acid to flow so as to achieve the purposes of controlling the temperature and eliminating concentration polarization can be realized only by purchasing corresponding large-scale equipment and carrying out related experiments. For battery factories, how to shorten the formation time and ensure the temperature within the process range without purchasing new equipment becomes the key for cost reduction and efficiency improvement.
Disclosure of Invention
The embodiment of the invention provides a temperature control type storage battery formation control method, a temperature control type storage battery formation control device, a charger and a storage medium, which are used for solving the problems of shortening formation time and ensuring that the temperature is within a process range under the condition of not purchasing new equipment.
In a first aspect, an embodiment of the present invention provides a method for controlling formation of a temperature-controlled storage battery, including:
acquiring the current battery temperature and the current charging current in the battery formation process at the initial stage of battery formation;
if the current battery temperature is less than or equal to the low-temperature threshold value, performing formation charging according to the low-temperature current;
if the current battery temperature is greater than the low-temperature threshold and the current battery temperature is less than the high-temperature threshold, determining to perform formation charging according to low-temperature current or high-temperature current according to the current charging current, wherein the low-temperature current is greater than the high-temperature current;
and if the current battery temperature is greater than or equal to the high-temperature threshold value, performing formation charging according to the high-temperature current.
In one possible implementation manner, the determining to perform the chemical charging according to the low-temperature current or the high-temperature current according to the present charging current includes:
if the current charging current is the low-temperature current, performing formation charging according to the low-temperature current;
and if the current charging current is the high-temperature current, performing formation charging according to the high-temperature current.
In one possible implementation manner, after the formation charging according to the low-temperature current or the formation charging according to the high-temperature current, the method further includes:
acquiring at least one of current capacity, current power, current energy or first current temperature in the battery formation process, and acquiring first accumulated time of battery formation;
determining whether to switch to a next stage of battery formation based on at least one of a current capacity, a current power, a current energy, or a first current temperature, and the first accumulated time.
In one possible implementation, the determining whether to switch to the next stage of battery formation according to at least one of the current capacity, the current power, the current energy, or the first current temperature, and the first accumulated time includes:
and if at least one of the current capacity, the current power, the current energy or the current temperature reaches a set threshold value or the first accumulated time reaches a first time threshold value, determining to switch to the next stage of battery formation.
In one possible implementation, after determining whether to switch to the next stage of battery formation according to at least one of the current capacity, the current power, the current energy, or the first current temperature, and the first accumulated time, the method further includes:
if the next stage of battery formation is a standing stage, acquiring the current voltage or the second current temperature in the standing process and the second accumulated time of standing;
and if the current voltage or the second current temperature meets the conversion condition or the second accumulated time reaches a second time threshold value, determining to be converted into the next stage of the stationary stage.
In a second aspect, an embodiment of the present invention provides a temperature-controlled storage battery formation control apparatus, including: the acquisition module is used for acquiring the current battery temperature and the current charging current in the battery formation process at the initial stage of battery formation;
the first processing module is used for performing formation charging according to low-temperature current if the current battery temperature is less than or equal to a low-temperature threshold value;
the second processing module is used for determining to perform formation charging according to the low-temperature current or the high-temperature current according to the current charging current if the current battery temperature is greater than the low-temperature threshold and the current battery temperature is less than the high-temperature threshold;
and the third processing module is used for performing formation charging according to the high-temperature current if the current battery temperature is greater than or equal to the high-temperature threshold value.
In one possible implementation manner, the second processing module is specifically configured to perform formation charging according to the low-temperature current if the present charging current is the low-temperature current;
and if the current charging current is the high-temperature current, performing formation charging according to the high-temperature current.
In one possible implementation manner, the obtaining module is further configured to obtain at least one of a current capacity, a current power, a current energy, or a first current temperature in the battery formation process, and obtain a first accumulated time of the battery formation;
the first processing module, the second processing module, and the third processing module are further configured to determine whether to transition to a next stage of battery formation based on the first accumulated time and at least one of a current capacity, a current power, a current energy, or a first current temperature.
In a third aspect, an embodiment of the present invention provides a battery charger, including a memory for storing a computer program and a processor for calling and running the computer program stored in the memory, to perform the steps of the method according to the first aspect or any one of the possible implementations of the first aspect.
In a fourth aspect, embodiments of the present invention provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method as described above in the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the invention provides a temperature control type storage battery formation control method, a temperature control type storage battery formation control device, a charger and a storage medium. Therefore, the battery temperature is used for controlling the magnitude of initial charging current in battery formation, when the battery temperature is low, the formation charging is carried out by adopting larger low-temperature current, when the battery temperature is higher than a high-temperature threshold value, the formation charging is carried out by adopting smaller high-temperature current, and then when the battery temperature is lower than the low-temperature threshold value, the formation charging is carried out by adopting larger low-temperature current, so that a pulse charger or an acid circulating system is not required to be added, the formation time can be shortened by using larger low-temperature current, and the requirement that the formation temperature is within a process range can be ensured by using smaller high-temperature current.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of an implementation of a formation control method of a temperature-controlled storage battery according to an embodiment of the present invention;
fig. 2 is a schematic view showing a location of a temperature sensor in a battery according to an embodiment of the present invention;
fig. 3 is a schematic diagram of parameter setting of a temperature-controlled storage battery formation control method according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating setting of conversion parameters of temperature-controlled charging according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of setting of conversion parameters for a rest phase according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of the surface of a side plate after dissection of a test cell according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of the surface of an inner plate after dissection of a test cell according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a temperature-controlled storage battery formation control device according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a charger 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 the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention 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 invention with unnecessary detail.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, a flowchart of an implementation of a temperature control type storage battery formation control method provided by an embodiment of the present invention is shown, and details are as follows:
in step 101, at an initial stage of battery formation, a current battery temperature and a current charging current during battery formation are acquired.
In this embodiment, in order to achieve the requirements of shortening the formation time and ensuring the formation temperature within the process range without adding a pulse charger or an acid circulation system, a charger commonly used in a battery factory is improved, and a temperature control module and a temperature acquisition interface are added, so that the improved charger can realize the formation control method of the temperature-controlled storage battery provided by this embodiment.
As shown in fig. 2, the temperature sensor may be disposed inside the middle cell of the battery, and the battery temperature collected by the temperature sensor may be sent to the temperature collection interface of the charger, so that the charger obtains the current battery temperature in the battery formation process, thereby controlling the charging current in the battery formation process according to the current battery temperature, realizing temperature control charging, and avoiding the temperature exceeding the process range due to too large charging current.
In step 102, if the present battery temperature is less than or equal to the low temperature threshold, formation charging is performed according to the low temperature current.
In step 103, if the current battery temperature is greater than the low temperature threshold and the current battery temperature is less than the high temperature threshold, it is determined that formation charging is performed according to the low temperature current or the high temperature current according to the current charging current.
In step 104, if the present battery temperature is greater than or equal to the high temperature threshold, the formation charging is performed according to the high temperature current.
Wherein the low temperature current is greater than the high temperature current.
Optionally, determining to perform formation charging according to the low-temperature current or the high-temperature current according to the present charging current may include: if the current charging current is low-temperature current, performing formation charging according to the low-temperature current; and if the current charging current is high-temperature current, performing formation charging according to the high-temperature current.
As shown in fig. 3, in order to achieve temperature-controlled charging, parameters corresponding to the temperature-controlled charging, that is, a high temperature threshold (i.e., a high temperature in fig. 3), a low temperature threshold (i.e., a low temperature in fig. 3), a low temperature current, a high temperature current, and the like may be set.
By setting the parameters corresponding to the temperature-controlled charging, the temperature-controlled charging mode can be selected at the initial stage of battery formation, so that the formation charging is performed by adopting a large low-temperature current during the period when the battery temperature rises from the initial temperature to the high-temperature threshold value. After the battery temperature reaches the high temperature threshold, the battery is switched to a smaller high temperature current for formation and charging. The battery then gradually decreases in temperature in the water bath, and still employs a small high temperature current for chemical charging before the battery temperature decreases to the low temperature threshold. When the temperature of the battery is reduced to the low temperature threshold value or below, the battery is subjected to formation charging by adopting a large low-temperature current.
That is, when the current battery temperature is less than or equal to the low temperature threshold, the formation charging is performed according to the low temperature current. When the current battery temperature is greater than the low temperature threshold and less than the high temperature threshold, if the current charging current is low temperature current, that is, the current battery temperature is the temperature in the period from the initial temperature to the high temperature threshold, the formation charging is still performed according to the low temperature current, so that the capacity for charging the battery is improved as much as possible, the formation charging time is shortened, and the charging efficiency is improved. And then performing formation charging according to the high-temperature current when the current battery temperature is greater than or equal to the high-temperature threshold. And when the current battery temperature is greater than the low temperature threshold and less than the high temperature threshold, if the current charging current is high temperature current, namely the current battery temperature is the temperature in the process of falling from the high temperature threshold, the battery temperature is still subjected to formation charging according to the high temperature current, so that the battery temperature is ensured not to exceed the upper limit of the production requirement.
Wherein, the low temperature threshold and the high temperature threshold can be determined in combination with the process range specified by battery formation and the actual condition of the battery, and the low temperature threshold can be 50 ℃ and the high temperature threshold can be 62 ℃ by way of example. The low temperature current and the high temperature current can be determined by combining multiple tests such as monitoring of the charging temperature of the battery, for example, the low temperature current can be 35A, and the high temperature current can be 10A.
Based on the design thought of temperature control charging, the high temperature threshold, the low temperature current and the high temperature current are introduced in formation control, so that the charging current is controlled according to the relative magnitudes of the battery temperature, the high temperature threshold and the low temperature threshold, and then the conventional water bath formation can be matched, and the requirements of shortening the formation time and ensuring the formation temperature within the process range can be met on the basis of not adding a pulse charger or an acid circulation system.
According to the embodiment of the invention, the current battery temperature and the current charging current in the battery formation process are obtained at the initial stage of battery formation, then formation charging is carried out according to the larger low-temperature current when the current battery temperature is smaller than or equal to the low-temperature threshold value, formation charging is carried out according to the larger low-temperature current or the smaller high-temperature current according to the current charging current when the current battery temperature is larger than the low-temperature threshold value and the current battery temperature is smaller than the high-temperature threshold value, and formation charging is carried out according to the smaller high-temperature current when the current battery temperature is larger than or equal to the high-temperature threshold value. Therefore, the battery temperature is used for controlling the magnitude of initial charging current in battery formation, when the battery temperature is low, the formation charging is carried out by adopting larger low-temperature current, when the battery temperature is higher than a high-temperature threshold value, the formation charging is carried out by adopting smaller high-temperature current, and then when the battery temperature is lower than the low-temperature threshold value, the formation charging is carried out by adopting larger low-temperature current, so that a pulse charger or an acid circulating system is not required to be added, the formation time can be shortened by using larger low-temperature current, and the requirement that the formation temperature is within a process range can be ensured by using smaller high-temperature current.
Optionally, after the formation charging according to the low-temperature current or the formation charging according to the high-temperature current, the method may further include: acquiring at least one of current capacity, current power, current energy or first current temperature in the battery formation process, and acquiring first accumulated time of battery formation; it is determined whether to transition to a next stage of battery formation based on at least one of the current capacity, the current power, the current energy, or the first current temperature, and the first accumulated time.
Optionally, determining whether to transition to a next stage of battery formation based on at least one of the current capacity, the current power, the current energy, or the first current temperature, and the first accumulated time may include:
if at least one of the current capacity, the current power, the current energy, or the current temperature reaches a set threshold, or the first accumulated time reaches a first time threshold, then a transition to a next stage of battery formation is determined.
As shown in fig. 3 and 4, in order to further shorten the formation time, considering that the battery formation process generally includes charging, standing, discharging, etc., conversion parameters such as capacity, power, energy, temperature, etc. in fig. 4 may be set for the next stage of conversion from temperature-controlled charging to battery formation. Thereby transitioning to the next stage of battery formation when at least one of capacity, power, energy, or temperature reaches a set threshold, or when the first accumulated time reaches a first time threshold. Thereby introducing capacity, power, energy, temperature and the like to perform formation control, combining temperature control charging, and when at least one of the capacity, the power, the energy, the temperature and the like reaches a set threshold value in advance by the temperature control charging, switching to the next stage of battery formation in advance, rather than determining whether to switch to the next stage of battery formation only according to whether the first accumulated time of battery formation reaches a first time threshold value.
For example, when the first integrated time and the capacity are used as the conversion parameters of the temperature-controlled charging and the first integrated time reaches 10h or the capacity reaches 160Ah, the battery is converted to the next stage of battery formation. At this time, since the formation charging time is shortened as much as possible by adopting the temperature control charging, if the capacity has reached 160Ah when the first accumulated time does not reach 10h, the next stage of the battery formation can be switched in advance, thereby further shortening the battery formation time.
As shown in fig. 4, at the time of constant voltage charging, a current may also be set as a switching parameter to switch to the next stage of battery formation when the present current is equal to or less than a set current threshold.
It should be noted that, for different batteries, at least one parameter of capacity, power, energy, and temperature, and the first accumulated time of battery formation charging may be selected as the conversion parameter of temperature control charging. The specific selection of several parameters of capacity, power, energy and temperature and the first accumulated time together as the conversion parameters of temperature-controlled charging may be determined according to practical situations, which is not limited in this embodiment.
Besides, according to the actual condition of the battery, other parameters besides capacity, power, energy and temperature can be selected to be used as the conversion parameters of temperature control charging together with the first accumulation.
The set threshold corresponding to the parameters such as capacity, power, energy, temperature and the like can be determined according to the battery formation process before improvement. For example, the battery formation process before modification is divided into a charging stage, a discharging stage and a charging stage, and the charging capacity of the charging stage before the discharging stage is 169.75Ah, so that the charging stage before the discharging stage can be changed to temperature-controlled charging, and the set threshold corresponding to the capacity in the conversion condition of converting the temperature-controlled charging into the next stage is set to 160Ah or 170Ah, so that the battery is charged with a certain amount of electricity in the temperature-controlled charging stage.
Optionally, after determining whether to switch to the next stage of battery formation according to at least one of the current capacity, the current power, the current energy, or the first current temperature, and the first accumulated time, the method further includes:
if the next stage of battery formation is a standing stage, acquiring the current voltage or the second current temperature in the standing process and the second accumulated time of standing; and if the current voltage or the second current temperature meets the conversion condition or the second accumulated time reaches a second time threshold value, determining to be converted to the next stage of the stationary stage.
In the battery formation process, a standing phase is set after a general charging phase to consider the charge-discharge conversion capability of the device and provide time for reducing the virtual voltage and the temperature of the battery. In order to shorten the second accumulation time of the standing as much as possible, that is, to shorten the overall battery formation time as much as possible, as shown in fig. 5, at least one of the voltage or the temperature and the second accumulation time of the standing may be used together as a conversion parameter of the standing stage, so as to reasonably consider the conditions of the conversion of the device, the battery polarization and the battery temperature.
The following describes a temperature-controlled storage battery formation control method provided in this embodiment with reference to examples:
to determine the efficiency and effectiveness of temperature-controlled charging, comparative test analysis was performed on the formation process to represent the product 55D23R/L-MF (K) cell:
the chemical formation and charging process for mass produced 55D23L/R-MF (K) batteries is generally shown in Table 1. As can be seen from table 1, the formation process of mass-produced 55D23L/R-MF (K) cells can be generally divided into three stages: a charging stage, a discharging stage and a charging stage, wherein the first charging stage (i.e. a plurality of charging-standing stages before the discharging stage) is the initial stage of battery formation, the charging current overcomes polarization to generate high heat, and the charging electric quantity 169.75Ah and the electric quantity account for 68.79% of the total 10 hours in the stage; the discharging stage is carried out for 1 hour, the discharging quantity is 15Ah, and the electric quantity accounts for 8.84% of the total quantity; the second charging stage is carried out for 6 hours and 40 minutes, the charging quantity is 92Ah, and the quantity of electricity accounts for 37.28% of the whole. The total charge amount was 246.75Ah.
TABLE 1
The formation charging process after the 55D23L/R-MF (K) battery is modified to be temperature controlled charged is shown in Table 2:
TABLE 2
The capacity in the conversion parameters of the temperature control charging stage is 160Ah, the electric quantity is about 65% of the total, the discharging electric quantity is 15Ah and about 10% of the total, the charging electric quantity in the second charging stage is 90Ah and about 38.30% of the total, and the total charging quantity is 235Ah.
The battery formation test was performed according to the formation charging process of table 2, and the overall time of the battery formation test was set to be 14 hours and 5 minutes at maximum, and finally the whole battery formation process took 10 hours and 41 minutes, and the temperature did not exceed the process range, and the formation time was shortened by 3 hours and 24 minutes in the temperature-controlled charging stage.
Initial results of the test batteries of 2 55D23R/L-MF (K) using the formation charging process of Table 2 were extracted, and the results of the verification are shown in Table 3, which shows that the performance meets the standard requirement after changing the initial charging of the battery formation before the discharging stage to temperature-controlled charging.
TABLE 3 Table 3
The 55D23R/L-MF (K) test cells using the formation charging process of Table 2 were extracted for dissection, and the results of the dissection are shown in FIGS. 6 and 7, which show that the internal positive plate formation was good except that the side plate surface had a certain number of white flowers.
Experiments show that the temperature control charging control method is introduced into the charger, so that the problem of temperature rise in the rapid formation process can be solved, the formation time of the battery can be greatly shortened on the premise of not increasing the charge quantity, and the formation effect and the battery performance of the battery meet the standard requirements.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
The following are device embodiments of the invention, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 8 is a schematic structural diagram of a temperature-controlled battery formation control device according to an embodiment of the present invention, and for convenience of explanation, only the portions related to the embodiment of the present invention are shown, which is described in detail below:
as shown in fig. 8, the temperature-controlled battery formation control device includes: an acquisition module 81, a first processing module 82, a second processing module 83 and a third processing module 84.
An obtaining module 81, configured to obtain a current battery temperature and a current charging current in a battery formation process at an initial battery formation stage;
a first processing module 82, configured to perform formation charging according to the low-temperature current if the current battery temperature is less than or equal to the low-temperature threshold;
the second processing module 83 is configured to determine that formation charging is performed according to the low-temperature current or the high-temperature current according to the current charging current if the current battery temperature is greater than the low-temperature threshold and the current battery temperature is less than the high-temperature threshold;
the third processing module 84 is configured to perform formation charging according to the high-temperature current if the current battery temperature is greater than or equal to the high-temperature threshold.
According to the embodiment of the invention, the current battery temperature and the current charging current in the battery formation process are obtained at the initial stage of battery formation, then formation charging is carried out according to the larger low-temperature current when the current battery temperature is smaller than or equal to the low-temperature threshold value, formation charging is carried out according to the larger low-temperature current or the smaller high-temperature current according to the current charging current when the current battery temperature is larger than the low-temperature threshold value and the current battery temperature is smaller than the high-temperature threshold value, and formation charging is carried out according to the smaller high-temperature current when the current battery temperature is larger than or equal to the high-temperature threshold value. Therefore, the battery temperature is used for controlling the magnitude of initial charging current in battery formation, when the battery temperature is low, the formation charging is carried out by adopting larger low-temperature current, when the battery temperature is higher than a high-temperature threshold value, the formation charging is carried out by adopting smaller high-temperature current, and then when the battery temperature is lower than the low-temperature threshold value, the formation charging is carried out by adopting larger low-temperature current, so that a pulse charger or an acid circulating system is not required to be added, the formation time can be shortened by using larger low-temperature current, and the requirement that the formation temperature is within a process range can be ensured by using smaller high-temperature current.
In a possible implementation manner, the second processing module 83 may be configured to perform formation charging according to the low-temperature current if the present charging current is the low-temperature current;
and if the current charging current is the high-temperature current, performing formation charging according to the high-temperature current.
In one possible implementation, the obtaining module 81 may also be configured to obtain at least one of a current capacity, a current power, a current energy, or a first current temperature during formation of the battery, and obtain a first accumulated time of formation of the battery; the first, second and third processing modules 82, 83, 84 may also be configured to determine whether to transition to a next stage of battery formation based on at least one of the current capacity, the current power, the current energy, or the first current temperature, and the first accumulated time.
In one possible implementation, the first processing module 82, the second processing module 83, and the third processing module 84 may be configured to determine to transition to a next stage of battery formation if at least one of the current capacity, the current power, the current energy, or the current temperature reaches a set threshold, or the first accumulated time reaches a first time threshold.
In one possible implementation, the obtaining module 81 may be further configured to obtain the current voltage or the second current temperature during the standing process and the second accumulated time of the standing if the next stage of battery formation is the standing stage; the first, second and third processing modules 82, 83, 84 may also be configured to determine to transition to a next phase of the stationary phase if the current voltage or the second current temperature meets a transition condition, or the second accumulated time reaches a second time threshold.
Fig. 9 is a schematic diagram of a charger according to an embodiment of the present invention. As shown in fig. 9, the charger 9 of this embodiment includes: a processor 90, a memory 91 and a computer program 92 stored in the memory 91 and executable on the processor 90. The steps of the embodiments of the temperature-controlled battery formation control method described above, such as steps 101 through 104 shown in fig. 1, are implemented by the processor 90 when executing the computer program 92. Alternatively, the processor 90, when executing the computer program 92, performs the functions of the modules/units in the above-described apparatus embodiments, such as the functions of the modules/units 81 to 84 shown in fig. 8.
By way of example, the computer program 92 may be partitioned into one or more modules/units that are stored in the memory 91 and executed by the processor 90 to complete the present invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions describing the execution of the computer program 92 in the charger 9. For example, the computer program 92 may be split into modules/units 81 to 84 shown in fig. 8.
The charger 9 may include, but is not limited to, a processor 90, a memory 91. It will be appreciated by those skilled in the art that fig. 9 is merely an example of the charger 9 and is not meant to be limiting of the charger 9, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the charger may further include input and output devices, network access devices, buses, etc.
The processor 90 may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 91 may be an internal storage unit of the charger 9, such as a hard disk or a memory of the charger 9. The memory 91 may also be an external storage device of the charger 9, 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, which are provided on the charger 9. Further, the memory 91 may also include both an internal storage unit and an external storage device of the charger 9. The memory 91 is used to store computer programs and other programs and data required by the charger. The memory 91 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a 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 process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
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 solution. 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 invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/charger and method may be implemented in other manners. For example, the above-described apparatus/charger embodiments are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the procedures in the methods of the above embodiments, or may be implemented by a computer program for instructing related hardware, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of the respective embodiments of the temperature-controlled storage battery formation control method when executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (10)
1. A temperature-controlled battery formation control method, characterized by comprising:
acquiring the current battery temperature and the current charging current in the battery formation process at the initial stage of battery formation;
if the current battery temperature is less than or equal to the low-temperature threshold value, performing formation charging according to the low-temperature current;
if the current battery temperature is greater than the low-temperature threshold and the current battery temperature is less than the high-temperature threshold, determining to perform formation charging according to low-temperature current or high-temperature current according to the current charging current, wherein the low-temperature current is greater than the high-temperature current;
and if the current battery temperature is greater than or equal to the high-temperature threshold value, performing formation charging according to the high-temperature current.
2. The method according to claim 1, wherein the determining of the formation charge according to the low-temperature current or the high-temperature current based on the present charge current includes:
if the current charging current is the low-temperature current, performing formation charging according to the low-temperature current;
and if the current charging current is the high-temperature current, performing formation charging according to the high-temperature current.
3. The method according to claim 1, characterized by further comprising, after the formation charging according to the low-temperature current or the formation charging according to the high-temperature current:
acquiring at least one of current capacity, current power, current energy or first current temperature in the battery formation process, and acquiring first accumulated time of battery formation;
determining whether to switch to a next stage of battery formation based on at least one of a current capacity, a current power, a current energy, or a first current temperature, and the first accumulated time.
4. The temperature-controlled storage battery formation control method according to claim 3, wherein the determining whether to switch to the next stage of the battery formation based on at least one of a current capacity, a current power, a current energy, or a first current temperature, and the first accumulated time includes:
and if at least one of the current capacity, the current power, the current energy or the current temperature reaches a set threshold value or the first accumulated time reaches a first time threshold value, determining to switch to the next stage of battery formation.
5. The temperature-controlled storage battery formation control method according to claim 3, further comprising, after determining whether to shift to a next stage of battery formation based on at least one of a current capacity, a current power, a current energy, or a first current temperature, and the first integration time:
if the next stage of battery formation is a standing stage, acquiring the current voltage or the second current temperature in the standing process and the second accumulated time of standing;
and if the current voltage or the second current temperature meets the conversion condition or the second accumulated time reaches a second time threshold value, determining to be converted into the next stage of the stationary stage.
6. A temperature-controlled battery formation control apparatus, comprising:
the acquisition module is used for acquiring the current battery temperature and the current charging current in the battery formation process at the initial stage of battery formation;
the first processing module is used for performing formation charging according to low-temperature current if the current battery temperature is less than or equal to a low-temperature threshold value;
the second processing module is used for determining to perform formation charging according to the low-temperature current or the high-temperature current according to the current charging current if the current battery temperature is greater than the low-temperature threshold and the current battery temperature is less than the high-temperature threshold;
and the third processing module is used for performing formation charging according to the high-temperature current if the current battery temperature is greater than or equal to the high-temperature threshold value.
7. The device according to claim 6, wherein the second processing module is specifically configured to perform formation charging according to the low-temperature current if the present charging current is the low-temperature current;
and if the current charging current is the high-temperature current, performing formation charging according to the high-temperature current.
8. The temperature-controlled battery formation control apparatus according to claim 6, wherein the acquisition module is further configured to acquire at least one of a current capacity, a current power, a current energy, or a first current temperature during the battery formation, and acquire a first accumulated time of the battery formation;
the first processing module, the second processing module, and the third processing module are further configured to determine whether to transition to a next stage of battery formation based on the first accumulated time and at least one of a current capacity, a current power, a current energy, or a first current temperature.
9. A charger comprising a memory for storing a computer program and a processor for calling and running the computer program stored in the memory to perform the method of any one of claims 1 to 5.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any of the preceding claims 1 to 5.
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| CN202311638738.6A CN117497892A (en) | 2023-12-01 | 2023-12-01 | Temperature control type storage battery formation control method and device, charger and storage medium |
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| CN202311638738.6A CN117497892A (en) | 2023-12-01 | 2023-12-01 | Temperature control type storage battery formation control method and device, charger and storage medium |
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