CN115139829A - Charging heating control method and device, electronic equipment and storage medium - Google Patents
Charging heating control method and device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN115139829A CN115139829A CN202210902386.XA CN202210902386A CN115139829A CN 115139829 A CN115139829 A CN 115139829A CN 202210902386 A CN202210902386 A CN 202210902386A CN 115139829 A CN115139829 A CN 115139829A
- Authority
- CN
- China
- Prior art keywords
- heating
- current value
- battery
- value
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
Abstract
The application provides a charging heating control method and device, electronic equipment and a storage medium, and relates to the technical field of batteries. In a heating mode, controlling a heating assembly to heat a battery by referring to a heating current value, acquiring the current value of the battery acquired by a current sensor in real time, if the absolute value of the current value is greater than the accuracy of the current sensor, determining the step length of the heating current according to the current value and the accuracy of the current sensor, determining a target heating current value according to the step length of the heating current and the reference heating current value, controlling the heating assembly to heat the battery by referring to the target heating current value, and if the absolute value of the current value is not greater than the accuracy of the current sensor, controlling the heating assembly to heat the battery by referring to the heating current value. Because in the process of charging the battery, the heating current value of the heating assembly can be controlled, the heating assembly can output the maximum power in real time, the heating speed is increased, and the heating efficiency and the charging efficiency can be improved.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a charging and heating control method and device, electronic equipment and a storage medium.
Background
The electric vehicle is generally heated by connecting a heating component to the outside of the battery to generate heat and raise the temperature.
At present, in the process of heating the battery through the heating assembly, the battery is usually heated by adopting constant heating current, however, because the internal resistance of the heating assembly changes along with the temperature in the working process, the heating assembly cannot provide the maximum heating power in real time, and thus the heating efficiency and the charging efficiency of the battery are low.
Disclosure of Invention
In order to solve the existing technical problems, embodiments of the present application provide a charging heating control method and apparatus, an electronic device, and a storage medium, which can improve the heating efficiency and charging efficiency of a battery.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a charging heating control method, where the method includes:
in the heating mode, controlling the heating assembly to heat the battery at a reference heating current value;
acquiring a current value of the battery acquired by a current sensor, if the absolute value of the current value is greater than the precision of the current sensor, determining a heating current step length according to the current value and the precision of the current sensor, determining a target heating current value according to the heating current step length and the reference heating current value, and controlling the heating assembly to heat the battery by using the target heating current value;
and if the absolute value of the current value is not greater than the accuracy of the current sensor, controlling the heating assembly to heat the battery by the reference heating current value.
According to the charging and heating control method provided by the embodiment of the application, in a heating mode, the heating assembly is controlled to heat the battery according to a reference heating current value, the current value of the battery acquired by the current sensor is acquired in real time, if the absolute value of the current value is larger than the accuracy of the current sensor, a heating current step length is determined according to the current value and the accuracy of the current sensor, a target heating current value is determined according to the heating current step length and the reference heating current value, the heating assembly is controlled to heat the battery according to the target heating current value, and if the absolute value of the current value is not larger than the accuracy of the current sensor, the heating assembly is controlled to heat the battery according to the reference heating current value. Because the heating current value of the heating assembly can be controlled in the process of charging the battery, the heating assembly can output the maximum power in real time, the heating speed is increased, and the heating efficiency and the charging efficiency of charging the battery can be increased.
In an alternative embodiment, the reference heating current value is a first heating current value determined based on a voltage value of the battery and a maximum value of the internal resistance of the heating assembly, or is a historical heating current value determined based on an absolute value of the current value at the previous time.
In this embodiment, the reference heating current value for heating the battery may be a first heating current value determined from the voltage value of the battery and the maximum value of the internal resistance of the heating element, or may be a historical heating current value determined from the absolute value of the current value at the previous time. Therefore, the heating current value of the heating assembly can be controlled, the heating assembly can output the maximum power in real time, and the heating efficiency is improved.
In an alternative embodiment, the determining a target heating current value according to the heating current step and the reference heating current value includes:
if the current sensor collects the discharge current value of the battery, determining a target heating current value according to the sum of the reference heating current value and the heating current step length; or
And if the charging current value of the battery is acquired by the current sensor, determining a target heating current value according to the difference between the reference heating current value and the heating current step length.
In this embodiment, if the current sensor acquires a discharge current value of the battery, the target heating current value is determined based on the sum of the reference heating current value and the heating current step, and if the current sensor acquires a charge current value of the battery, the target heating current value is determined based on the difference between the reference heating current value and the heating current step. Therefore, the heating current value for heating the battery can be determined according to whether the battery is in a charging state or a discharging state, the real-time control of the heating current value is realized, and the heating efficiency and the charging efficiency for charging the battery are improved.
In an optional embodiment, the method further comprises:
if the current sensor acquires the discharge current value of the battery and the determined target heating current value is greater than a first limited heating current value, controlling the heating assembly to heat the battery by the first limited heating current value; the first heating current limit value is determined according to a voltage value of the battery and a minimum value of the internal resistance of the heating assembly; or
If the charging current value of the battery is acquired by the current sensor and the determined target heating current value is smaller than a second heating limiting current value, controlling the heating assembly to heat the battery by the second heating limiting current value; the second limit heating current value is zero.
In the embodiment, if the current sensor collects the discharge current value of the battery and the determined target heating current value is greater than a first limit heating current value, the heating assembly is controlled to heat the battery by the first limit heating current value, wherein the first limit heating current value is determined according to the voltage value of the battery and the minimum internal resistance value of the heating assembly; and if the charging current value of the battery is acquired by the current sensor and the determined target heating current value is smaller than the second limit heating current value, controlling the heating assembly to heat the battery by the second limit heating current value, wherein the second limit heating current value is zero. Therefore, the heating current value of the heating assembly can be reasonably controlled, the heating assembly can output the maximum power in real time, and the heating efficiency is improved.
In an optional embodiment, the method further comprises:
under the heating and charging mode, controlling the heating assembly to heat the battery at a second heating current value; the second heating current value is determined based on a voltage value of the battery and an internal resistance representative value of the heating assembly.
In this embodiment, in the heating-while-charging mode, the heating block is controlled to heat the battery at a second heating current value determined based on the voltage value of the battery and the internal resistance representative value of the heating block. Therefore, the control of the heating current value of the heating assembly can be realized, the heating assembly can be controlled to heat the battery at the heating current value capable of providing the maximum heating power, and the heating efficiency and the heating speed for charging the battery are improved.
In a second aspect, an embodiment of the present application further provides a charging and heating control device, where the device includes:
a first heating control module for controlling the heating assembly to heat the battery with reference to a heating current value in a heating mode;
the second heating control module is used for acquiring a current value of the battery acquired by a current sensor, determining a heating current step length according to the current value and the current sensor precision if the absolute value of the current value is greater than the current sensor precision, determining a target heating current value according to the heating current step length and the reference heating current value, and controlling the heating assembly to heat the battery at the target heating current value;
a third heating control module for controlling the heating assembly to heat the battery at the reference heating current value if the absolute value of the current value is not greater than the current sensor accuracy.
In an alternative embodiment, the reference heating current value is a first heating current value determined based on a voltage value of the battery and a maximum value of the internal resistance of the heating element, or a historical heating current value determined based on an absolute value of the current value at the previous time.
In an alternative embodiment, the second heating control module is specifically configured to:
if the current sensor collects the discharge current value of the battery, determining a target heating current value according to the sum of the reference heating current value and the heating current step length; or
And if the charging current value of the battery is acquired by the current sensor, determining a target heating current value according to the difference between the reference heating current value and the heating current step length.
In an alternative embodiment, the apparatus further comprises a limit heating control module for:
if the current sensor acquires the discharge current value of the battery and the determined target heating current value is greater than a first limited heating current value, controlling the heating assembly to heat the battery by the first limited heating current value; the first heating current limit value is determined according to a voltage value of the battery and a minimum value of the internal resistance of the heating assembly; or
If the charging current value of the battery is acquired by the current sensor and the determined target heating current value is smaller than a second heating limiting current value, controlling the heating assembly to heat the battery by the second heating limiting current value; the second limit heating current value is zero.
In an alternative embodiment, the apparatus further comprises a fourth heating control module for:
under the heating and charging mode, controlling the heating assembly to heat the battery at a second heating current value; the second heating current value is determined based on a voltage value of the battery and an internal resistance representative value of the heating assembly.
In a third aspect, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the charging and heating control method of the first aspect is implemented.
In a fourth aspect, the present application further provides an electronic device, including a memory and a processor, where the memory stores a computer program executable on the processor, and when the computer program is executed by the processor, the processor is enabled to implement the charging and heating control method of the first aspect.
For technical effects brought by any one implementation manner in the second aspect to the fourth aspect, reference may be made to technical effects brought by a corresponding implementation manner in the first aspect, and details are not described here.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a battery system according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating communication between a BMS and a charging pile through a CAN bus according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a charging heating control method according to an embodiment of the present application;
fig. 4 is a flowchart of another charging heating control method provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a charging and heating control device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of another charging heating control device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that references in the specification of the present application to the terms "comprises" and "comprising," and variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Fig. 1 schematically illustrates a structural diagram of a battery system to which the charging and heating control method provided in the embodiment of the present application is applied. As shown in fig. 1, the battery system includes a battery 100, a heating assembly 200, a charging device 300, a heating relay 400, a charging relay 500, and a current sensor 600.
The current sensor 600 is used for collecting a charging current value or a discharging current value of the battery 100; when the heating relay 400 is opened and the charging relay 500 is closed, the battery system is in a pure charging mode, and the charging device 300 charges the battery 100; when the heating relay 400 is closed and the charging relay 500 is closed, the battery system is in the heating-only mode or the charging-while-charging mode, the charging device 300 charges the battery 100, and the heating assembly 200 heats the battery 100. The charging device 300 may be a charging pile or a vehicle-mounted charger.
In an alternative embodiment, the charging and heating control method provided in the embodiment of the present application may be applied to a Battery Management System (BMS). Fig. 2 is a schematic diagram of communication between the BMS and a charging device (charging pile or vehicle-mounted charger) through a CAN bus, as shown in fig. 2, the BMS may transmit a charging demand current of a battery to the charging device through the CAN bus, and the charging device may provide the charging demand current for the BMS, that is, the battery is charged with the charging demand current; the BMS may transmit a required charging voltage of the battery to the charging device through the CAN bus, and the charging device may provide the required charging voltage to the BMS, that is, charge the battery with the required charging voltage; the charging device may provide the actual charging current, at which the battery is charged, to the BMS.
In addition, other interactive signals CAN be communicated between the charging device and the BMS through the CAN bus.
In some embodiments, a flowchart of a charging heating control method provided in an embodiment of the present application may be as shown in fig. 3, and includes the following steps:
in the heating mode, the heating assembly is controlled to heat the battery with reference to the heating current value in step S301.
The reference heating current value may be a first heating current value determined according to the voltage value of the battery and the maximum value of the internal resistance of the heating assembly, or may be a historical heating current value determined according to the absolute value of the current value at the previous time.
The maximum internal resistance value of the heating assembly may be the maximum internal resistance value of the heating assembly obtained according to the technical specification of the heating assembly.
Alternatively, the heating element may be a heating film.
Step S302, acquiring a current value of the battery acquired by the current sensor, if the absolute value of the current value is greater than the accuracy of the current sensor, determining a heating current step length according to the current value and the accuracy of the current sensor, determining a target heating current value according to the heating current step length and a reference heating current value, and controlling the heating assembly to heat the battery by the target heating current value.
The current value of the battery can be collected through the current sensor, when the current value collected by the current sensor is a positive value, the discharging current value of the battery can be determined to be collected by the current sensor, and when the current value collected by the current sensor is a negative value, the charging current value of the battery can be determined to be collected by the current sensor.
When the current sensor acquires the charging current value of the battery and the absolute value of the charging current value of the battery is larger than the accuracy of the current sensor, the heating current step length can be determined according to the absolute value of the charging current value and the accuracy of the current sensor.
When the current sensor acquires the discharge current value of the battery and the discharge current value of the battery is greater than the current sensor precision, the heating current step length can be determined according to the discharge current value and the current sensor precision.
Wherein, the current sensor precision is the measurement error of the current sensor. For example, assuming that the measurement range of the current sensor is 0 to 200A and the accuracy is 1%, the current sensor accuracy may be 2A.
When the heating current step length is determined according to the absolute value of the charging current value and the accuracy of the current sensor, the heating current step length can be obtained by looking up a table according to the difference between the absolute value of the charging current value and the accuracy of the current sensor. Namely, the heating current step corresponding to the difference between the absolute value of the charging current value and the accuracy of the current sensor is determined according to the preset corresponding relationship between the current value and the heating current step.
When the heating current step length is determined according to the discharge current value and the current sensor precision, the heating current step length can be obtained by looking up a table according to the difference between the discharge current value and the current sensor precision. Namely, the heating current step corresponding to the difference between the discharging current value and the current sensor precision is determined according to the preset corresponding relation between the current value and the heating current step.
After the heating current step length is determined according to the current value of the battery acquired by the current sensor and the accuracy of the current sensor, if the current sensor acquires the discharge current value of the battery, determining a target heating current value according to the sum of the reference heating current value and the heating current step length; and if the current sensor acquires the charging current value of the battery, determining a target heating current value according to the difference between the reference heating current value and the heating current step length.
After the target heating current value is determined, the heating assembly can be controlled to heat the battery at the target heating current value.
In step S303, if the absolute value of the current value is not greater than the current sensor accuracy, the heating element is controlled to heat the battery with reference to the heating current value.
When the charging current value of the battery is acquired by the current sensor and the absolute value of the charging current value of the battery is not greater than the accuracy of the current sensor, the heating assembly can be controlled to heat the battery by referring to the heating current value.
When the current sensor collects the discharge current value of the battery and the discharge current value of the battery is not greater than the precision of the current sensor, the heating assembly can be controlled to heat the battery by referring to the heating current value.
Specifically, in a heating mode, a heating assembly is controlled at a certain moment to heat a battery by a reference heating current value, the charging or discharging current value of the battery is collected in real time through a current sensor, if the absolute value of the charging or discharging current value of the battery at the current moment is larger than the precision of the current sensor, a heating current step length is determined according to the difference between the absolute value of the current value and the precision of the current sensor, a target heating current value is determined according to the heating current step length and the reference heating current value, and the heating assembly is controlled to heat the battery by the target heating current value; and if the absolute value of the current value of the charging or discharging of the battery at the current moment is not greater than the accuracy of the current sensor, controlling the heating assembly to heat the battery by referring to the heating current value.
For example, in a heating mode, assuming that a current value of the battery collected by the current sensor is obtained at intervals of 1s, at the 1 st s, the heating assembly is controlled to heat the battery at a first heating current value I1, at the 2 nd s, the current sensor collects a discharging current value of the battery, the discharging current value is greater than the current sensor precision, a heating current step d1 of the 2 nd s is determined according to the discharging current value of the 2 nd s and the current sensor precision, and the first heating current value I1 and the heating current step d1 are added to obtain a target heating current value Ih1 of the 2 nd s, that is, ih1= I1+ d1.
And when the current sensor is at the 3s, the discharging current value of the battery is acquired by the current sensor, the discharging current value is greater than the current sensor precision, the heating current step length d2 of the 3s is determined according to the discharging current value and the current sensor precision of the 3s, and the target heating current value Ih1 of the 2s and the heating current step length d2 of the 3s are added to obtain the target heating current value Ih2 of the 3s, namely Ih2= Ih1+ d2.
And when the current sensor is at the 4 th time, the charging current value of the battery is acquired by the current sensor, the absolute value of the charging current value is greater than the accuracy of the current sensor, the heating current step length d3 of the 4 th time is determined according to the absolute value of the charging current value of the 4 th time and the accuracy of the current sensor, and the target heating current value Ih2 of the 3 rd time is subtracted from the heating current step length d3 of the 4 th time to obtain the target heating current value Ih3 of the 4 th time, namely Ih3= Ih2-d3.
And in the 5s, the current sensor acquires the charging current value of the battery, the absolute value of the charging current value is not greater than the accuracy of the current sensor, the target heating current value of the 5s is determined to be equal to the target heating current value Ih3 of the 4s, and the heating assembly is controlled to heat the battery at the target heating current value Ih 3.
In one embodiment, if the current sensor collects the discharge current value of the battery and the determined target heating current value is greater than the first heating current limit value, the heating assembly is controlled to heat the battery at the first heating current limit value. The first heating current limiting value is determined according to the voltage value of the battery and the minimum internal resistance value of the heating assembly, and the minimum internal resistance value of the heating assembly can be the minimum internal resistance value of the heating assembly obtained according to the technical specification of the heating assembly.
And if the charging current value of the battery is acquired by the current sensor and the determined target heating current value is smaller than the second limit heating current value, controlling the heating assembly to heat the battery by the second limit heating current value. Wherein the second limit heating current value may be zero.
Optionally, in a heating while charging mode, the heating assembly is controlled to heat the battery at a second heating current value. Wherein the second heating current value is determined based on the voltage value of the battery and the internal resistance representative value of the heating assembly. The typical internal resistance value of the heating assembly can be obtained according to the technical specification of the heating assembly, and the typical internal resistance value of the heating assembly is an internal resistance value of the heating assembly in a normal temperature state.
Specifically, the second heating current value may be determined by the following formula:
wherein, I heat2 At a second heating current value, U pack Is the voltage value of the battery, R ty Typical values for the internal resistance of the heating assembly.
In some embodiments, the charging heating control method proposed by the present application may also be implemented according to the process shown in fig. 4. As shown in fig. 4, the following steps may be included:
in the heating only mode, the heating assembly is controlled to heat the battery with reference to the heating current value, step S401.
The reference heating current value can be a first heating current value determined according to the voltage value of the battery and the maximum value of the internal resistance of the heating assembly, or a historical heating current value determined according to the current value of the battery collected by the current sensor at the last moment.
When the reference heating current value is the first heating current value, the reference heating current value may be determined by the following formula:
wherein, I heat1 For reference heating current value, U pack Is the voltage value of the battery, R max Is the maximum value of the internal resistance of the heating element.
When the reference heating current value is a historical heating current value at the previous moment, if the absolute value of the current value at the previous moment is greater than the current sensor precision, the reference heating current value is a heating current value at the previous moment determined according to the heating current value at the previous moment and the heating current step length determined at the previous moment; if the absolute value of the current value at the previous moment is not greater than the current sensor accuracy, the reference heating current value is the heating current value at the previous moment.
Step S402, acquiring a current value of the battery acquired by the current sensor, and determining whether the current value is greater than 0; if not, go to step S403; if so, step S410 is performed.
In step S403, it is determined that the current sensor collects the charging current value of the battery.
Step S404, determining whether the absolute value of the charging current value is greater than the current sensor precision; if not, executing step S405; if so, go to step S406.
In step S405, the heating assembly is controlled to heat the battery with reference to the heating current value.
Step S406, determining the heating current step according to the absolute value of the charging current value and the current sensor precision.
The heating current step length may be obtained by looking up a table according to a difference between the absolute value of the charging current value and the accuracy of the current sensor.
Step S407, determining a target heating current value according to a difference between the reference heating current value and the heating current step, and controlling the heating assembly to heat the battery at the target heating current value.
Step S408 of determining whether the target heating current value is smaller than the second limit heating current value; if not, executing step S402; if so, step S409 is performed.
And step S409, controlling the heating assembly to heat the battery by the second limit heating current value.
Wherein the second limit heating current value is zero.
Step S410, determining that the current sensor collects the discharge current value of the battery.
Step S411, determining whether the discharge current value is greater than the current sensor precision; if not, executing step S405; if so, step S412 is performed.
And step S412, determining the heating current step according to the discharge current value and the current sensor precision.
The heating current step size may be obtained by looking up a table based on the difference between the discharge current value and the current sensor accuracy.
And step S413, determining a target heating current value according to the sum of the reference heating current value and the heating current step, and controlling the heating assembly to heat the battery at the target heating current value.
Step S414, determining whether the target heating current value is larger than the first limit heating current value; if not, executing step S402; if so, step S415 is performed.
In step S415, the heating assembly is controlled to heat the battery with the first limited heating current value.
Wherein the first limit heating current value may be determined according to a voltage value of the battery and an internal resistance minimum value of the heating assembly. That is, the first limit heating current value may be determined by the following equation:
wherein, I lim For the first limit heating current value, U pack Is the voltage value of the battery, R min Is the minimum internal resistance of the heating assembly.
The charging heating control method proposed in the present application is explained in detail by using a specific example as follows:
in the heating mode, when the current sensors collect the discharge current values of the batteries, the heating assembly is controlled to heat the batteries at a first heating current value I1 in the initial stage. Assuming that the 1 st to 3s heating assemblies heat the battery by a first heating current value I1, the discharge current value Iact of the 4 th battery is greater than the current sensor precision delta I, and the heating current step length is determined to be d1, the heating current value for heating the battery in the 4 th s is I1+ d1; the discharging current value Iact of the 5 th battery is larger than the current sensor precision delta I, and the heating current step length is determined to be d2, so that the heating current value for heating the battery in the 5 th battery is I1+ d1+ d2; if the discharging current value Iact of the 6 th battery is not more than the current sensor precision delta I, the heating current value for heating the 6 th battery is I1+ d1+ d2; and if the discharge current value Iact of the 7 th battery is larger than the current sensor precision delta I and the determined step length is d3, the heating current value for heating the battery at the 7 th s is I1+ d1+ d2+ d3.
In the heating mode, when the charging current values of the batteries are acquired by the current sensors, the heating assembly is controlled to heat the batteries at a first heating current value I1 in the initial stage. Assuming that the 1 st to 3 th batteries are heated by the first heating current value I1, the absolute value | Iact | of the charging current value of the 4 th battery is larger than the current sensor precision δ I, and the heating current step length is determined to be d1, the heating current value for heating the 4 th battery in the 4 th s is I1-d1; the absolute value | Iact | of the charging current value of the battery at the 5 th s is larger than the current sensor precision δ I, and the heating current step length is determined to be d2, so that the heating current value for heating the battery at the 5 th s is I1-d1-d2; the absolute value | Iact | of the charging current value of the 6 th battery is not more than the current sensor precision δ I, and the heating current value for heating the battery in the 6 th battery is I1-d1-d2; the absolute value | Iact | of the charging current value of the 7 th battery is larger than the current sensor accuracy δ I, and the heating current step is determined to be d3, then the heating current value for heating the battery at the 7 th s is I1-d1-d2-d3.
According to the charging and heating control method provided by the embodiment of the application, in a heating mode, the heating assembly is controlled to heat the battery according to a reference heating current value, the current value of the battery acquired by the current sensor is acquired in real time, if the absolute value of the current value is larger than the accuracy of the current sensor, a heating current step length is determined according to the current value and the accuracy of the current sensor, a target heating current value is determined according to the heating current step length and the reference heating current value, the heating assembly is controlled to heat the battery according to the target heating current value, and if the absolute value of the current value is not larger than the accuracy of the current sensor, the heating assembly is controlled to heat the battery according to the reference heating current value. The charging and discharging current values of the battery collected by the current sensor can be obtained in real time in the process of charging the battery, and whether the heating current value for heating the battery is controlled or not is determined according to the charging and discharging current value of the battery and the accuracy of the current sensor, so that the heating and charging processes of the battery can be reasonably controlled, and the heating current value is controlled gradually, so that the heating assembly can output the maximum power in real time in the working process, the heating speed is increased, and the heating efficiency and the charging efficiency for charging the battery are improved.
The charging and heating control method shown in fig. 3 is based on the same inventive concept, and the embodiment of the present application further provides a charging and heating control device. Because the device is a device corresponding to the charging heating control method and the principle of solving the problems of the device is similar to that of the method, the implementation of the device can refer to the implementation of the method, and repeated details are not repeated.
Fig. 5 shows a schematic structural diagram of a charging heating control device provided in an embodiment of the present application, and as shown in fig. 5, the charging heating control device includes a first heating control module 501, a second heating control module 502, and a third heating control module 503.
Wherein, the first heating control module 501 is used for controlling the heating component to heat the battery with reference to the heating current value in the heating mode;
the second heating control module 502 is configured to obtain a current value of the battery acquired by the current sensor, determine a heating current step length according to the current value and the accuracy of the current sensor if the absolute value of the current value is greater than the accuracy of the current sensor, determine a target heating current value according to the heating current step length and a reference heating current value, and control the heating assembly to heat the battery at the target heating current value;
a third heating control module 503 for controlling the heating assembly to heat the battery with reference to the heating current value if the absolute value of the current value is not greater than the current sensor accuracy.
In an alternative embodiment, the reference heating current value is a first heating current value determined from the voltage value of the battery and the maximum value of the internal resistance of the heating assembly, or is a historical heating current value determined from the absolute value of the current value at the previous time.
In an alternative embodiment, the second heating control module 502 is specifically configured to:
if the current sensor collects the discharge current value of the battery, determining a target heating current value according to the sum of the reference heating current value and the heating current step length; or
And if the current sensor acquires the charging current value of the battery, determining a target heating current value according to the difference between the reference heating current value and the heating current step length.
In an alternative embodiment, as shown in fig. 6, the apparatus may further include a heating limit control module 601 for:
if the current sensor acquires the discharge current value of the battery and the determined target heating current value is larger than the first heating limiting current value, controlling the heating assembly to heat the battery by the first heating limiting current value; the first limit heating current value is determined according to the voltage value of the battery and the minimum value of the internal resistance of the heating assembly; or
If the charging current value of the battery is acquired by the current sensor and the determined target heating current value is smaller than the second limit heating current value, controlling the heating assembly to heat the battery by the second limit heating current value; the second limit heating current value is zero.
In an alternative embodiment, as shown in fig. 6, the apparatus may further include a fourth heating control module 602 for:
under the heating and charging mode, controlling the heating assembly to heat the battery at a second heating current value; the second heating current value is determined based on the voltage value of the battery and the internal resistance representative value of the heating assembly.
The electronic equipment is based on the same inventive concept as the method embodiment. The electronic device may be a battery management system BMS for controlling a heating current of the battery during charging. In this embodiment, the structure of the electronic device may be as shown in fig. 7, including a memory 701 and one or more processors 702.
A memory 701 for storing a computer program executed by the processor 702. The memory 701 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, a program required for running an instant messaging function, and the like; the storage data area can store various instant messaging information, operation instruction sets and the like.
The memory 701 may be a volatile memory (volatile memory), such as a random-access memory (RAM); the memory 701 may also be a non-volatile memory (non-volatile memory) such as, but not limited to, a read-only memory (rom), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD), or any other medium which can be used to carry or store desired program code in the form of instructions or data structures and which can be accessed by a computer 701. The memory 701 may be a combination of the above memories.
The processor 702 may include one or more Central Processing Units (CPUs), or be a digital processing unit, etc. The processor 702 is configured to implement the charging and heating control method when calling a computer program stored in the memory 701.
The specific connection medium between the memory 701 and the processor 702 is not limited in the embodiments of the present application. In fig. 7, the memory 701 and the processor 702 are connected by a bus 703, the bus 703 is represented by a thick line in fig. 7, and the connection manner between other components is merely illustrative and not limited. The bus 703 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
According to an aspect of the application, a computer program product or computer program is provided, comprising computer instructions, the computer instructions being stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the charging heating control method in the above-described embodiment.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (10)
1. A charging heating control method, characterized by comprising:
in the heating mode, controlling the heating assembly to heat the battery at a reference heating current value;
acquiring a current value of the battery acquired by a current sensor, if the absolute value of the current value is greater than the precision of the current sensor, determining a heating current step length according to the current value and the precision of the current sensor, determining a target heating current value according to the heating current step length and the reference heating current value, and controlling the heating assembly to heat the battery by using the target heating current value;
and if the absolute value of the current value is not greater than the accuracy of the current sensor, controlling the heating assembly to heat the battery by the reference heating current value.
2. The method according to claim 1, wherein the reference heating current value is a first heating current value determined from a voltage value of the battery and a maximum value of the internal resistance of the heating assembly, or a historical heating current value determined from an absolute value of the current value at the last time.
3. The method according to claim 1, wherein the determining a target heating current value from the heating current step and the reference heating current value comprises:
if the current sensor acquires the discharge current value of the battery, determining a target heating current value according to the sum of the reference heating current value and the heating current step length; or
And if the charging current value of the battery is acquired by the current sensor, determining a target heating current value according to the difference between the reference heating current value and the heating current step length.
4. The method of claim 1, further comprising:
if the current sensor acquires the discharge current value of the battery and the determined target heating current value is larger than a first heating limiting current value, controlling the heating assembly to heat the battery at the first heating limiting current value; the first heating current limit value is determined according to a voltage value of the battery and a minimum value of the internal resistance of the heating assembly; or
If the charging current value of the battery is acquired by the current sensor and the determined target heating current value is smaller than a second heating limiting current value, controlling the heating assembly to heat the battery by the second heating limiting current value; the second limit heating current value is zero.
5. The method according to any one of claims 1 to 4, further comprising:
under the heating and charging mode, controlling the heating assembly to heat the battery at a second heating current value; the second heating current value is determined based on a voltage value of the battery and an internal resistance representative value of the heating assembly.
6. A charging heating control device, the device comprising:
a first heating control module for controlling the heating assembly to heat the battery at a reference heating current value in a heating mode;
the second heating control module is used for acquiring a current value of the battery acquired by a current sensor, determining a heating current step length according to the current value and the current sensor precision if the absolute value of the current value is greater than the current sensor precision, determining a target heating current value according to the heating current step length and the reference heating current value, and controlling the heating assembly to heat the battery at the target heating current value;
a third heating control module for controlling the heating assembly to heat the battery at the reference heating current value if the absolute value of the current value is not greater than the current sensor accuracy.
7. The apparatus according to claim 6, wherein the reference heating current value is a first heating current value determined from a voltage value of the battery and a maximum value of the internal resistance of the heating assembly, or a historical heating current value determined from an absolute value of the current value at the last time.
8. The apparatus according to claim 6, wherein the second heating control module is specifically configured to:
if the current sensor collects the discharge current value of the battery, determining a target heating current value according to the sum of the reference heating current value and the heating current step length; or
And if the current sensor acquires the charging current value of the battery, determining a target heating current value according to the difference between the reference heating current value and the heating current step length.
9. A computer-readable storage medium having a computer program stored therein, the computer program characterized by: the computer program, when executed by a processor, implements the method of any one of claims 1 to 5.
10. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, the computer program, when executed by the processor, implementing the method of any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210902386.XA CN115139829A (en) | 2022-07-29 | 2022-07-29 | Charging heating control method and device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210902386.XA CN115139829A (en) | 2022-07-29 | 2022-07-29 | Charging heating control method and device, electronic equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115139829A true CN115139829A (en) | 2022-10-04 |
Family
ID=83414029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210902386.XA Pending CN115139829A (en) | 2022-07-29 | 2022-07-29 | Charging heating control method and device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115139829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667470A (en) * | 2022-11-10 | 2023-08-29 | 荣耀终端有限公司 | Charging method and electronic equipment |
-
2022
- 2022-07-29 CN CN202210902386.XA patent/CN115139829A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667470A (en) * | 2022-11-10 | 2023-08-29 | 荣耀终端有限公司 | Charging method and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110967636A (en) | Battery state of charge correction method, device and system and storage medium | |
| JP2020508442A (en) | Battery state of charge estimation apparatus and method | |
| CN112216886B (en) | Method and device for estimating battery charging time | |
| CN109466372B (en) | Charging remaining time calculation method and device and storage medium | |
| CN109991554B (en) | Battery electric quantity detection method and device and terminal equipment | |
| TW200415367A (en) | Method for counting cycle count of a smart battery and method and device for correcting full charge capacity of a smart battery using the same | |
| JP6844090B2 (en) | How to estimate the parameters of the equivalent circuit model for the battery and the battery management system | |
| WO2023197939A1 (en) | Ocv-soc calibration method and apparatus, ocv-soc estimation method and apparatus, and medium and vehicle | |
| JP6896965B2 (en) | Equivalent circuit model parameter estimation method and battery management system for batteries | |
| CN111740464B (en) | Battery power compensation method, device, equipment and readable storage medium | |
| JP5583057B2 (en) | Battery module, battery pack system, battery adjustment method and program | |
| CN115139829A (en) | Charging heating control method and device, electronic equipment and storage medium | |
| CN103902005A (en) | Battery charging management method, battery charging management device and mobile device | |
| CN116381522A (en) | SOC display method, device, equipment and storage medium during battery discharging | |
| CN115303128A (en) | Method, device, equipment and medium for calculating battery equalization time | |
| Selvabharathi et al. | Experimental analysis on battery based health monitoring system for electric vehicle | |
| US20200112069A1 (en) | Battery Pack | |
| EP3657593B1 (en) | Battery pack | |
| CN112946498B (en) | Method and device for obtaining electromotive force curve and processor | |
| CN116259866B (en) | Charging method, battery management system, battery, and readable storage medium | |
| JP7422898B2 (en) | Battery pack, battery system and precharging method | |
| CN113687248B (en) | Battery capacity determining method and device, electronic equipment and storage medium | |
| JP6907449B2 (en) | Battery charge status estimation device and method | |
| CN113075550B (en) | Method, device, medium and electronic device for obtaining electromotive force curve | |
| CN110970947B (en) | Charging method, terminal and computer storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |