CN114771328A - Charging control method, charging control device, storage medium and electronic equipment - Google Patents
Charging control method, charging control device, storage medium and electronic equipment Download PDFInfo
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- CN114771328A CN114771328A CN202210350884.8A CN202210350884A CN114771328A CN 114771328 A CN114771328 A CN 114771328A CN 202210350884 A CN202210350884 A CN 202210350884A CN 114771328 A CN114771328 A CN 114771328A
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- charging
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- 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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
Abstract
The disclosure relates to a charging control method, a charging control device, a storage medium and an electronic device, wherein the method comprises the following steps: the method comprises the steps of charging a power battery based on rated current under the condition that the charging temperature is smaller than a first threshold temperature, reducing the charging current of the power battery based on a fuzzy control mode under the condition that the charging temperature is larger than the first threshold temperature and the charging temperature is smaller than a second threshold temperature, reducing the charging current along with the rise of the charging temperature under the fuzzy control mode, charging the power battery based on preset current under the condition that the charging temperature reaches a second threshold temperature, and enabling the preset current to be smaller than any charging current under the fuzzy control mode. Therefore, the charging current is adjusted more flexibly, the charging time is shortened on the premise of ensuring the charging safety, and the charging efficiency is improved.
Description
Technical Field
The present disclosure relates to a battery charging current domain, and in particular, to a charging control method and apparatus, a storage medium, and an electronic device.
Background
The existing new energy automobile charging method is characterized in that a charging gun on a charging pile is connected with a charging socket arranged on a vehicle, and the rear end of the charging socket is connected with a high-voltage wire harness to a power distribution unit or a power battery. After receiving a charging command, the charging pile sends charging current to the power battery through the charging gun, the charging socket and the high-voltage wire harness to complete the charging process. Temperature changes during charging are monitored by arranging temperature sensors on various components in the charging path. In the prior art, when the charging temperature is collected to reach 90 ℃, the temperature is judged to be too high, the charging current is reduced to a certain fixed current for charging, so that the charging time is prolonged, and the charging efficiency is influenced.
Disclosure of Invention
The present disclosure provides a charging control method, a charging control apparatus, a storage medium, and an electronic device, so as to solve the technical problem that in the existing charging adjustment strategy, when the charging temperature is increased, the charging time is increased, and the charging efficiency is reduced.
In order to achieve the above object, there is provided a charge control method according to a first aspect of the present disclosure, the method including:
under the condition that the charging temperature is lower than a first threshold temperature, charging the power battery based on the rated current;
in the case that the charging temperature is greater than the first threshold temperature and the charging temperature is less than a second threshold temperature, reducing the charging current of the power battery based on a fuzzy control mode, wherein the charging current is reduced along with the increase of the charging temperature in the fuzzy control mode;
and charging the power battery based on a preset current under the condition that the charging temperature reaches the second threshold temperature, wherein the preset current is smaller than any charging current in the fuzzy control mode.
Optionally, the reducing the charging current of the power battery based on the fuzzy control mode includes:
determining a percentage of temperature increase of the charging temperature per unit time in the fuzzy control mode;
reducing the charging current in the unit time according to the percentage.
Optionally, the method further comprises:
and if the charging current is reduced to a constant temperature current in the fuzzy control mode, charging the power battery based on the constant temperature current so as to keep the charging temperature constant.
Optionally, the method further comprises:
stopping charging when the charging temperature reaches a third threshold temperature;
and sending a charging fault signal, wherein the third threshold temperature is greater than the second threshold temperature.
Optionally, the charging the power battery based on a preset current when the charging temperature reaches the second threshold temperature includes:
under the condition that the charging temperature is greater than the second threshold temperature and the charging temperature is less than the third threshold temperature, determining that half of the rated current is used as the preset current;
and charging the power battery based on the preset current.
Optionally, the method further comprises:
determining a difference value between a current charging current and the rated current under the condition that the charging temperature is less than the first threshold temperature;
under the condition that the difference value between the current charging current and the rated current is larger than a preset current threshold, increasing the current charging current to a transitional charging current according to a unit adjustment step length, and maintaining for a preset time length after the transitional charging current is reached;
determining the difference value between the transitional charging current and the rated current under the condition that the charging temperature after the preset time duration is maintained is still less than the first threshold temperature;
and charging the power battery based on the rated current under the condition that the difference value between the transitional charging current and the rated current is smaller than the preset current threshold.
Optionally, the method further comprises:
responding to the charging starting signal, and acquiring temperature data of a charging plug or a charging socket corresponding to the charging device;
and carrying out digital filtering processing on the temperature data to obtain the charging temperature.
In a second aspect of the present disclosure, there is provided a charge control device, the device including:
the charging module is used for charging the power battery based on rated current under the condition that the charging temperature is lower than a first threshold temperature;
a first execution module, configured to, when the charging temperature is greater than the first threshold temperature and the charging temperature is less than a second threshold temperature, decrease a charging current of the power battery based on a fuzzy control mode in which the charging current decreases as the charging temperature increases;
and the second execution module is used for charging the power battery based on a preset current under the condition that the charging temperature reaches the second threshold temperature, wherein the preset current is smaller than any charging current in the fuzzy control mode.
According to a third aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of the first aspect of the present disclosure.
According to a fourth aspect of the present disclosure, there is provided a vehicle-mounted terminal including:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of any of the above methods.
According to the charging control method, the charging control device, the storage medium and the electronic equipment, the power battery is charged based on the rated current under the condition that the charging temperature is smaller than the first threshold temperature, the charging current of the power battery is reduced based on the fuzzy control mode under the condition that the charging temperature is larger than the first threshold temperature and the charging temperature is smaller than the second threshold temperature, the charging current is reduced along with the increase of the charging temperature under the fuzzy control mode, the power battery is charged based on the preset current under the condition that the charging temperature reaches the second threshold temperature, and the preset current is smaller than any charging current under the fuzzy control mode. Therefore, after the charging temperature rises to a certain temperature, the charging current is adjusted more flexibly, the charging time is shortened on the premise of ensuring the charging safety, and the charging efficiency is improved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but do not constitute a limitation of the disclosure. In the drawings:
fig. 1 is a flow chart illustrating a charge control method according to an exemplary embodiment.
FIG. 2 is a schematic diagram illustrating another charge control method according to an exemplary embodiment.
Fig. 3 is a graph of a change in charging current versus charging temperature according to an example embodiment.
Fig. 4 is a block diagram illustrating a charge control device according to an exemplary embodiment.
FIG. 5 is a block diagram of an electronic device shown in accordance with an example embodiment.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
It should be noted that all the actions of acquiring signals, information or data in the present disclosure are performed under the premise of complying with the corresponding data protection regulation policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
In order to achieve the above object, an embodiment of the present disclosure provides a charging control method, fig. 1 is a flowchart illustrating a charging control method according to an exemplary embodiment, referring to fig. 1, the method includes the following steps S11-S13, wherein:
and step S11, charging the power battery based on the rated current under the condition that the charging temperature is less than the first threshold temperature.
It should be noted that the charging control method in this embodiment may be applied to various storage battery charging scenarios, for example, may be applied to a charging environment of a mobile terminal, and may also be applied to a charging environment of a vehicle-mounted power battery. The temperature change condition of each charging assembly in the charging process is detected through the temperature acquisition sensor arranged on the charging path, so that the charging temperature in the charging circuit is determined. During the charging process of the storage battery, the corresponding charging temperature needs to be controlled within a certain temperature range, and the charging safety can be ensured. For example, in a charging environment of a mobile phone terminal, a battery corresponding to the mobile phone terminal generally needs to be maintained within a temperature range of-20 ℃ to 60 ℃ to ensure charging safety. However, in general, the battery can be charged for a long time in a charging temperature environment of-20 ℃ to 40 ℃; when the charging time is short, the battery is charged under the environment of charging temperature of 40-60 ℃, so that the charging safety can be ensured, and therefore, when the charging temperature reaches 40 ℃, the charging current of the battery needs to be adjusted; similarly, in the charging scene of the vehicle-mounted power battery, the charging temperature of the battery needs to be kept within the temperature range of 0-110 ℃, and the power battery can be continuously charged at the charging temperature of 0-90 ℃; after the temperature exceeds 90 ℃, the charging current of the power battery needs to be adjusted to gradually slow down the charging temperature, so that the charging safety is guaranteed. In this embodiment, in order to ensure that the battery can be safely charged, the charging temperature needs to be controlled within a certain temperature range, where the first threshold temperature is a maximum temperature that the battery can bear on the premise of safe charging. When the charging temperature reaches the first threshold temperature, the relevant control module needs to adjust the charging current of the battery to ensure the charging safety. After the charging temperature rises to the first threshold temperature, the charging of the power battery is not stopped immediately, but the charging current needs to be reduced so as to avoid the battery damage caused by the sharp rise of the charging temperature. For example, in a charging scenario for the mobile terminal, the temperature of 40 ℃ is a first threshold temperature in the charging scenario; in a charging scene of the vehicle-mounted battery, the temperature of 90 ℃ is the first threshold temperature in the charging scene.
It is understood that, in order to ensure the charging efficiency, when the charging temperature is less than the first threshold temperature, the charging is performed at the rated current of the power battery, which is the maximum current that the power battery can bear. The power battery is charged based on the rated current, and the charging efficiency is guaranteed under the condition that the charging temperature does not reach the first threshold temperature, so that the charging time of the power battery is shortened.
Optionally, before the step S11, the charging control method further includes:
(1) and responding to the charging starting signal, and acquiring the temperature data of the charging plug or the charging socket corresponding to the charging device.
(2) And carrying out digital filtering processing on the temperature data to obtain the charging temperature.
It can be understood that, in this embodiment, after receiving the charging start signal, by acquiring the temperature data of the charging plug or the charging socket in the charging path, the corresponding charging temperature data is generated.
In the charging paths of the charging plug, the charging harness, the charging socket and the battery, the temperature data of the charging plug and the charging socket are relatively convenient to collect, and the temperature condition of the charging path in the charging process can be clearly reflected. Therefore, in the present embodiment, the temperature sensor is disposed at a corresponding position of the charging plug or the charging socket to detect the temperature change during the charging process. It should be noted that, in the process of acquiring the temperature of the charging plug or the charging socket, due to the influence of the external ambient temperature, abnormal fluctuation of the temperature data is easily caused, and therefore, in this embodiment, after the temperature data of the charging plug or the charging socket is acquired, digital filtering processing needs to be performed on the data to eliminate the influence of other interference factors such as the ambient temperature, so as to obtain the charging temperature corresponding to the charging path.
In step S12, in the case that the charging temperature is greater than the first threshold temperature and the charging temperature is less than the second threshold temperature, the charging current of the power battery is reduced based on the fuzzy control mode, and the charging current is reduced along with the increase of the charging temperature in the fuzzy control mode.
It is understood that based on the formula Q ═ I2Rt (heat calculation formula, Q is heat, I is current, R is resistance, t is time), when the charging temperature is less than the first threshold temperature, charging the power battery based on the rated current, I is a fixed value, the charging path is unchanged during the charging process, i.e. R is kept constant, the charging temperature rises correspondingly with the increase of the charging time, i.e. the charging temperature and the charging time are in a direct proportional relationship. In the process of keeping the rated current for charging, the charging temperature can be increased successively along with the increase of the charging time, and when the charging temperature reaches the first threshold temperature and the power battery is not fully charged, the charging current needs to be adjusted, so that the damage of the power battery caused by the continuous temperature rise of the charging circuit is avoided. In this embodiment, the second threshold temperature is an alert temperature value of the power battery during charging, and when the charging temperature reaches the second threshold temperature, the charging current needs to be greatly reduced, so as to ensure charging safety, and the second threshold temperature is set to be related to the internal structure of the power battery. For example, when the power battery is a lithium battery in the mobile terminal, the second threshold temperature may be set to be 50 ℃; when the power battery is an on-vehicle power battery, the second threshold temperature may be set to 105 ℃.
With the increase of the charging time, when the charging temperature rises to a range between the first threshold temperature and the second threshold temperature, the power battery is continuously charged with the rated current, so that the charging temperature is easy to rise sharply, and under the condition that the charging of the power battery is not completed, the charging temperature reaches the dangerous charging temperature, so that the charging is stopped. Therefore, the charging current needs to be reduced to alleviate the rising tendency of the charging temperature.
In the embodiment, when the charging temperature is between a first threshold temperature and a second threshold temperature, the charging current of the power battery is reduced based on the fuzzy control mode. In the fuzzy control mode, the charging current is gradually decreased as the charging temperature increases on the basis of the rated current. It should be noted that, the charging duration of the power battery is in positive correlation with the magnitude of the charging current, so in the fuzzy control mode, the charging current is not decreased by a large extent at one time, but the charging current is required to be controlled to be gradually decreased along with the increasing trend of the charging temperature, thereby ensuring that the charging efficiency is improved on the premise of slowing down the increasing trend of the charging temperature.
Optionally, the step S12 includes:
(1) in the fuzzy control mode, the percentage of temperature increase in the charging temperature per unit time is determined.
(2) The charging current is reduced per unit time according to a percentage.
It is understood that in the fuzzy control mode, the charging temperature is gradually decreased as the charging temperature increases, and in the present embodiment, the decreasing rate of the charging current is the same as the increasing rate of the charging temperature. Based on the heat quantity calculation formula Q ═ I2Rt, otherwise constant, the charging temperature gradually increases with time. Therefore, the rising trend of the charging temperature is determined by calculating the percentage of increase in the charging temperature per unit time, and accordingly, based on the percentage, the charging current is decreased by the charging current of the percentage based on the original charging current. For example, when the charging current of the power battery is 50A, and the charging temperature is 95 ℃, the charging temperature changes to 100 ℃ within 1s of unit time, and the corresponding percentage increase of the charging temperature is 5.2%; in this case, the charging current needs to be decreased by 5.2% within 1s per unit time, that is, the changed charging current is 47.4A (1 to 5.2%), and the rate of change according to the decrease in the charging current is the rate of change in the increase in the charging temperature per unit time.
Alternatively, in another possible implementation manner, a corresponding relationship between the charging current and the charging temperature variation may be preset, for example, a step size of current reduction may be preset, where the step size may be understood as a current value that needs to be correspondingly reduced for each reduction of the charging temperature by 1 ℃ of the charging current, and the step size may be constant, or different step sizes may be set according to different temperature ranges where the charging temperature is located.
Through the control of the charging current in the fuzzy control mode, the charging current is ensured to the maximum extent under the condition of ensuring the charging safety, so that the charging efficiency is improved, the charging time of the power battery is shortened, and the charging safety is further ensured.
Optionally, on the basis of the foregoing embodiment, the control method may further include:
and in the fuzzy control mode, if the charging current is reduced to the constant temperature current, the power battery is charged based on the constant temperature current so as to keep the charging temperature constant.
In this embodiment, the constant temperature current is the maximum value of the temperature increase caused by the increase of the charging current, and the constant temperature current of the power battery is usually smaller than the rated current. In the fuzzy control mode, the charging current is gradually reduced from the rated current when the charging temperature is between the first threshold temperature and the second threshold temperature. When the charging current is reduced to the constant-temperature current, the constant-temperature current is the maximum current value causing temperature change, and then the charging current is reduced, so that the rising trend of the charging temperature is not slowed down. Therefore, in order to ensure the charging efficiency, after the charging current is reduced from the rated current to the constant-temperature current, the constant-temperature current is kept to charge the power battery until the charging temperature is increased to the second threshold temperature. Optionally, for other charging scenarios in which the power battery is sensitive to the charging temperature, when the charging current is in the fuzzy control mode, the charging current is reduced from the rated current to the constant-temperature current, and the power battery is charged based on the constant-temperature current, so that damage to the power battery caused by continuous rise of the charging temperature is reduced.
And step S13, charging the power battery based on the preset current under the condition that the charging temperature reaches the second threshold temperature, wherein the preset current is smaller than any charging current in the fuzzy control mode.
It can be understood that the second threshold temperature in this embodiment is still within the temperature range for safe charging, but after the charging temperature reaches the second threshold temperature, the charging current needs to be greatly reduced, so as to avoid damage to the power battery caused by continuous increase of the charging temperature. In this embodiment, when the charging temperature reaches the second threshold temperature, the power battery is charged according to a preset current, where the preset current is smaller than any charging current in the fuzzy control mode, and the preset current is lower than the constant temperature current. The preset current can be set according to the sensitivity degree of the power battery to the charging temperature, for example, the preset current can be set to 1/2 of the rated current, and the preset current can also be set to 1/3 of the rated current.
Optionally, the control method may further include:
(1) and stopping charging when the charging temperature reaches a third threshold temperature.
(2) And sending a charging fault signal, wherein the third threshold temperature is greater than the second threshold temperature.
It is understood that, in this embodiment, the third threshold temperature is the maximum charging temperature acceptable for the charging process of the power battery, and the third threshold temperature is greater than the second threshold temperature. When the third threshold temperature is exceeded, charging is abnormal, and electric energy is continuously output to the power battery, so that the power battery is easily damaged. Generally, the charging of the power battery can be completed after the charging temperature is below the third threshold temperature and the charging is continued for a certain time according to the above embodiment. And when the charging temperature reaches the third threshold temperature and the power battery is still not fully charged, the charging temperature is abnormal due to some fault reason in the charging process. Therefore, when the charging temperature reaches the third threshold temperature, the input of the electric energy to the power battery needs to be stopped, and a charging fault signal is sent out to prompt a relevant technician to perform charging fault troubleshooting.
Fig. 2 is a schematic diagram illustrating another charge control method according to an exemplary embodiment, referring to fig. 2, the charge control method including:
after receiving a charging starting instruction, detecting the charging temperature in the charging path based on the temperature sensor, and after digital filtering processing, determining the temperature range of the charging temperature. When the charging temperature is less than 90 ℃, charging the power battery at a rated current; when the charging temperature is higher than 90 ℃ and lower than 105 ℃, constant-temperature current is kept to charge the power battery; when the charging temperature is higher than 105 ℃ and lower than 110 ℃, 1/2 for reducing the charging current to the rated current charges the power battery; and when the charging temperature is higher than 110 ℃, stopping inputting the electric energy into the power battery. Fig. 3 is a graph showing a variation of a charging current with respect to a charging temperature according to an exemplary embodiment, and referring to fig. 3, the power battery is charged with a rated current at the charging temperature in a range of 0 ℃ to 90 ℃, and the charging temperature is continuously increased. When the charging temperature is in the range of 90-105 ℃, the charging current is gradually reduced along with the increase of the charging temperature on the basis of the rated current; when the charging temperature is in the range of 105-110 ℃, the charging current is reduced to 1/2 of the rated current, and the charging temperature is still continuously increased by a certain value under the influence of other factors such as thermal effect and the like; when the charging temperature is higher than 110 ℃, the charging temperature is continuously increased due to the influence of other fault factors on the power battery, and the charging current is correspondingly reduced to 0 ℃ so as to avoid the damage caused by the fact that the charging temperature is continuously increased due to the fact that electric energy is input into the power battery.
Optionally, the step S13 includes:
and under the condition that the charging temperature is greater than the second threshold temperature and is less than the third threshold temperature, determining that half of the rated current is used as the preset current.
And charging the power battery based on the preset current.
It can be understood that, in the present embodiment, in the case that the charging temperature is between the second threshold temperature and the third threshold temperature, the power battery is charged based on the preset charging current. The preset charging current is half of the rated current. The preset current is set to 1/2 of the rated current, so that the charging efficiency of the power battery is guaranteed on the premise of ensuring the charging safety.
Optionally, the charge control method may further include:
in the case that the charging temperature is less than a first threshold temperature, a difference between the present charging current and the rated current is determined.
And under the condition that the difference value between the current charging current and the rated current is greater than a preset current threshold, increasing the current charging current to a transitional charging current according to the unit adjustment step length, and maintaining the preset time length after the transitional charging current is reached.
And determining the difference value between the transitional charging current and the rated current under the condition that the charging temperature after the preset time duration is maintained is still less than the first threshold temperature.
And under the condition that the difference value between the transitional charging current and the rated current is smaller than a preset current threshold, charging the power battery based on the rated current.
It should be noted that, in this embodiment, the charging temperature may be reduced based on other external environmental factors, for example, a cooling device may be disposed on the charging path, and when the charging temperature reaches a corresponding temperature value, the cooling device is started to cool down each component of the charging path, so as to reduce the charging temperature. After the charging current is reduced to a certain vertical level, the charging temperature loses the heat source, the temperature rise is stopped, and then the charging temperature is reduced by heat conduction with the external environment. In the process of reducing the charging temperature, when the charging temperature is lower than the first threshold temperature, the charging efficiency is reduced by charging the power battery based on the original charging current. Therefore, in the present embodiment, when the charging temperature is lower than the first threshold temperature, the charging current needs to be synchronously increased. However, in the process of increasing the charging current, if the power battery receives the charging current which is increased sharply, the power battery is easily damaged. In this embodiment, when the charging temperature is lower than the first threshold temperature, a difference between the present charging current and the rated current is determined, and when the difference is higher than the preset current threshold, it indicates that the present charging current directly jumps to the rated current, which is likely to cause damage to the power battery. Therefore, the current charging current needs to be increased to the transitional charging current according to the unit adjustment step length, and the transitional charging current with the preset duration needs to be maintained. And monitoring a process of charging the power battery based on the transitional charging current, determining a difference value between the transitional charging current and the rated current when the charging temperature is still less than a first threshold temperature in the process, and changing the charging current into the rated current to charge the power battery under the condition that the difference value is less than a preset current threshold value. When the difference between the transitional charging current and the rated current is larger than the preset current threshold, the transitional charging current is directly jumped to the rated current to charge the power battery, so that the power battery is easily damaged, the current charging current needs to be continuously controlled to approach the rated current according to the unit adjustment step length until the difference is smaller than the preset current threshold, and the current charging current is jumped to the rated charging current. Illustratively, the rated current is 50A, the current charging current is 20A, the preset current threshold is 10A, and the unit adjustment step length is 10A; when the current charging temperature is lower than a first threshold temperature, determining that the difference value between the rated current and the current charging current is 50A and is larger than a preset current threshold value 10A, correspondingly adjusting the current charging current to be a transitional charging current 30A, and charging the power battery based on the transitional charging current; and when the transitional charging current is 60A, adjusting the charging current to 50A, and maintaining the charging current of 50A to charge the power battery. In this embodiment, through the step-by-step charging current control, after the charging temperature is lower than the first threshold temperature, the charging current of the power battery is gradually increased, so as to avoid the damage to the power battery caused by the rapid increase of the charging current.
Through the embodiment, under the condition that the charging temperature is lower than the first threshold temperature, the power battery is charged based on the rated current, under the condition that the charging temperature is higher than the first threshold temperature and the charging temperature is lower than the second threshold temperature, the charging current of the power battery is reduced based on the fuzzy control mode, under the fuzzy control mode, the charging current is reduced along with the increase of the charging temperature, under the condition that the charging temperature reaches the second threshold temperature, the power battery is charged based on the preset current, and the preset current is lower than any charging current under the fuzzy control mode. Therefore, after the charging temperature is increased to a certain temperature, the charging current is adjusted more flexibly, the charging time is shortened on the premise of ensuring the charging safety, and the charging efficiency is improved.
Fig. 4 is a block diagram showing a charging control apparatus according to an exemplary embodiment, and referring to fig. 4, the charging control apparatus 100 includes: a charging module 110, a first execution module 120, and a second execution module 130.
The charging module 110 is used for charging the power battery based on the rated current under the condition that the charging temperature is less than a first threshold temperature;
a first executing module 120, configured to reduce a charging current of the power battery based on a fuzzy control mode in which the charging current decreases as the charging temperature increases, if the charging temperature is greater than a first threshold temperature and the charging temperature is less than a second threshold temperature;
and the second execution module 130 is configured to charge the power battery based on a preset current when the charging temperature reaches the second threshold temperature, where the preset current is smaller than any charging current in the fuzzy control mode.
Optionally, the first executing module 120 may be further configured to:
determining a percentage of temperature increase of the charging temperature per unit time in a fuzzy control mode;
the charging current is reduced per unit time according to the percentage.
Optionally, the charging control apparatus 100 further includes a third executing module, where the third executing module is configured to:
and in the fuzzy control mode, if the charging current is reduced to the constant temperature current, the power battery is charged based on the constant temperature current so as to keep the charging temperature constant.
Optionally, the charging device 100 further includes an alarm module, and the alarm module is configured to:
stopping charging when the charging temperature reaches a third threshold temperature;
and sending a charging fault signal, wherein the third threshold temperature is greater than the second threshold temperature.
Optionally, the second executing module 130 may be further configured to:
under the condition that the charging temperature is higher than a second threshold temperature and lower than a third threshold temperature, determining that half of rated current is used as preset current;
and charging the power battery based on the preset current.
Optionally, the charging control apparatus 100 further includes a fourth executing module, where the fourth executing module is configured to:
determining the difference value between the current charging current and the rated current under the condition that the charging temperature is less than a first threshold temperature;
under the condition that the difference value between the current charging current and the rated current is larger than a preset current threshold, the current charging current is increased to a transitional charging current according to the unit adjustment step length, and the preset time length is maintained after the transitional charging current is reached;
determining the difference value between the transitional charging current and the rated current under the condition that the charging temperature after the preset time duration is maintained is still less than the first threshold temperature;
and under the condition that the difference value between the transitional charging current and the rated current is smaller than a preset current threshold, charging the power battery based on the rated current.
Optionally, the charging control apparatus 100 further includes an acquisition module, where the acquisition module is configured to:
responding to the charging starting signal, and acquiring temperature data of a charging plug or a charging socket corresponding to the charging device;
and carrying out digital filtering processing on the temperature data to obtain the charging temperature.
With regard to the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.
FIG. 5 is a block diagram of an electronic device shown in accordance with an example embodiment. As shown in fig. 5, the electronic device 500 may include: a processor 501 and a memory 502. The electronic device 500 may also include one or more of a multimedia component 503, an input/output (I/O) interface 504, and a communication component 505.
The processor 501 is configured to control the overall operation of the electronic device 500, so as to complete all or part of the steps in the charging control method. The memory 502 is used to store various types of data to support operation at the electronic device 500, such as instructions for any application or method operating on the electronic device 500 and application-related data, such as contact data, messaging, pictures, audio, video, and the like. The Memory 502 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia component 503 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving an external audio signal. The received audio signal may further be stored in the memory 502 or transmitted through the communication component 505. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 504 provides an interface between the processor 501 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 505 is used for wired or wireless communication between the electronic device 500 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC for short), 4G, 5G, NB-IOT, eMTC, or other 5G, etc., or one or a combination of them, which is not limited herein. The corresponding communication component 505 may thus comprise: Wi-Fi module, Bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic Device 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the charging control method described above.
In another exemplary embodiment, there is also provided a computer readable storage medium including program instructions which, when executed by a processor, implement the steps of the charging control method described above. For example, the computer readable storage medium may be the memory 502 described above that includes program instructions that are executable by the processor 501 of the electronic device 500 to perform the charging control method described above.
In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described charge control method when executed by the programmable apparatus.
The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure as long as it does not depart from the gist of the present disclosure.
Claims (10)
1. A charge control method, characterized by comprising:
under the condition that the charging temperature is lower than a first threshold temperature, charging the power battery based on the rated current;
in the case that the charging temperature is greater than the first threshold temperature and the charging temperature is less than a second threshold temperature, reducing the charging current of the power battery based on a fuzzy control mode, wherein the charging current is reduced along with the increase of the charging temperature in the fuzzy control mode;
and charging the power battery based on a preset current under the condition that the charging temperature reaches the second threshold temperature, wherein the preset current is smaller than any charging current in the fuzzy control mode.
2. The control method according to claim 1, wherein the reducing the charging current of the power battery based on the fuzzy control mode comprises:
determining a percentage of temperature increase of the charging temperature per unit time in the fuzzy control mode;
reducing the charging current in the unit time according to the percentage.
3. The control method according to claim 2, characterized in that the method further comprises:
and in the fuzzy control mode, if the charging current is reduced to a constant temperature current, charging the power battery based on the constant temperature current so as to keep the charging temperature constant.
4. The control method according to claim 1, characterized in that the method further comprises:
stopping charging when the charging temperature reaches a third threshold temperature;
and sending a charging fault signal, wherein the third threshold temperature is greater than the second threshold temperature.
5. The control method according to claim 4, wherein the charging the power battery based on a preset current in the case where the charging temperature reaches the second threshold temperature includes:
under the condition that the charging temperature is greater than the second threshold temperature and less than the third threshold temperature, determining that half of the rated current is used as the preset current;
and charging the power battery based on the preset current.
6. The control method according to claim 1, characterized in that the method further comprises:
determining a difference value between a current charging current and the rated current under the condition that the charging temperature is less than the first threshold temperature;
under the condition that the difference value between the current charging current and the rated current is larger than a preset current threshold, increasing the current charging current to a transitional charging current according to a unit adjustment step length, and maintaining a preset time length after the transitional charging current is reached;
determining the difference value between the transitional charging current and the rated current under the condition that the charging temperature after the preset time duration is maintained is still less than the first threshold temperature;
and charging the power battery based on the rated current under the condition that the difference value between the transitional charging current and the rated current is smaller than the preset current threshold.
7. The control method according to claim 1, characterized in that the method further comprises:
responding to the charging starting signal, and acquiring temperature data of a charging plug or a charging socket corresponding to the charging device;
and carrying out digital filtering processing on the temperature data to obtain the charging temperature.
8. A charge control device, characterized by comprising:
the charging module is used for charging the power battery based on rated current under the condition that the charging temperature is less than a first threshold temperature;
a first execution module, configured to, when the charging temperature is greater than the first threshold temperature and the charging temperature is less than a second threshold temperature, decrease a charging current of the power battery based on a fuzzy control mode in which the charging current decreases as the charging temperature increases;
and the second execution module is used for charging the power battery based on a preset current under the condition that the charging temperature reaches the second threshold temperature, wherein the preset current is smaller than any charging current in the fuzzy control mode.
9. A non-transitory computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
10. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 7.
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| CN202210350884.8A CN114771328A (en) | 2022-04-02 | 2022-04-02 | Charging control method, charging control device, storage medium and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115946559A (en) * | 2022-12-26 | 2023-04-11 | 上海挚达科技发展股份有限公司 | Charging pile charging current adjusting method and device and charging pile |
| FR3141110A1 (en) * | 2022-10-25 | 2024-04-26 | Psa Automobiles Sa | MONITORING THE CHARGING CURRENT PROVIDED BY AN EXTERNAL POWER SOURCE TO RECHARGE A VEHICLE BATTERY BY DIRECT CURRENT |
-
2022
- 2022-04-02 CN CN202210350884.8A patent/CN114771328A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3141110A1 (en) * | 2022-10-25 | 2024-04-26 | Psa Automobiles Sa | MONITORING THE CHARGING CURRENT PROVIDED BY AN EXTERNAL POWER SOURCE TO RECHARGE A VEHICLE BATTERY BY DIRECT CURRENT |
| WO2024089322A1 (en) * | 2022-10-25 | 2024-05-02 | Stellantis Auto Sas | Monitoring of recharging current provided by an external power source for direct current recharging of a vehicle battery |
| CN115946559A (en) * | 2022-12-26 | 2023-04-11 | 上海挚达科技发展股份有限公司 | Charging pile charging current adjusting method and device and charging pile |
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