Charging control method, device, storage medium and electronic device

Abstract

The present disclosure relates to a charging control method, device, storage medium and electronic device, the method comprising: when the charging temperature is less than a first threshold temperature, charging a power battery based on a rated current, when the charging temperature is greater than the first threshold temperature and less than a second threshold temperature, reducing the charging current of the power battery based on a fuzzy control mode, the charging current in the fuzzy control mode decreases as the charging temperature increases, and when the charging temperature reaches the second threshold temperature, charging the power battery based on a preset current, the preset current being less than any charging current in the fuzzy control mode. Thus, the charging current can be adjusted more flexibly, and the charging time can be reduced and the charging efficiency can be improved under the premise of ensuring charging safety.

Description

Technical Field

[0001] The present disclosure relates to a battery charging domain, and in particular, to a charging control method, device, storage medium and electronic device. Background Art

[0002] The existing charging method for new energy vehicles is to connect the charging gun on the charging pile to the charging socket arranged on the vehicle, and the rear end of the charging socket is connected to the high-voltage wire harness to the distribution unit or power battery. After receiving the charging command, the charging pile transmits the charging current through the charging gun, charging socket, and high-voltage wire harness to the power battery to complete the charging process. Temperature sensors are arranged on various components in the charging path to monitor the temperature changes during the charging process. In the prior art, when the charging temperature reaches 90°C, it is determined that the temperature is too high, and the charging current is reduced to a fixed current for charging, which increases the charging time and affects the charging efficiency. Summary of the invention

[0003] The purpose of the present disclosure is to provide a charging control method, device, storage medium and electronic device to solve the technical problem in the existing charging adjustment strategy that when the charging temperature increases, the charging time increases and the charging efficiency decreases.

[0004] In order to achieve the above object, a charging control method is provided according to a first aspect of the present disclosure, the method comprising:

[0005] When the charging temperature is lower than the first threshold temperature, charging the power battery based on the rated current;

[0006] When the charging temperature is greater than the first threshold temperature and less than the second threshold temperature, the charging current of the power battery is reduced based on a fuzzy control mode, and the charging current is reduced as the charging temperature increases in the fuzzy control mode;

[0007] When the charging temperature reaches the second threshold temperature, the power battery is charged based on a preset current, and the preset current is less than any charging current in the fuzzy control mode.

[0008] Optionally, reducing the charging current of the power battery based on the fuzzy control mode includes:

[0009] In the fuzzy control mode, determining the percentage of the charging temperature increase per unit time;

[0010] The charging current is reduced within the unit time according to the percentage.

[0011] Optionally, the method further comprises:

[0012] If the charging current is reduced to a constant temperature current in the fuzzy control mode, the power battery is charged based on the constant temperature current so that the charging temperature remains constant.

[0013] Optionally, the method further comprises:

[0014] When the charging temperature reaches a third threshold temperature, stopping charging;

[0015] A charging fault signal is issued, and the third threshold temperature is greater than the second threshold temperature.

[0016] Optionally, when the charging temperature reaches the second threshold temperature, charging the power battery based on a preset current includes:

[0017] When the charging temperature is greater than the second threshold temperature and the charging temperature is less than the third threshold temperature, determining to use half of the rated current as the preset current;

[0018] The power battery is charged based on the preset current.

[0019] Optionally, the method further comprises:

[0020] When the charging temperature is less than the first threshold temperature, determining a difference between a current charging current and the rated current;

[0021] When the difference between the current charging current and the rated current is greater than a preset current threshold, the current charging current is increased to a transition charging current according to a unit adjustment step, and maintained for a preset time after reaching the transition charging current;

[0022] When the charging temperature after the preset time is maintained is still lower than the first threshold temperature, determining the difference between the transition charging current and the rated current;

[0023] When the difference between the transition charging current and the rated current is less than the preset current threshold, the power battery is charged based on the rated current.

[0024] Optionally, the method further comprises:

[0025] In response to the charging start signal, acquiring temperature data of a charging plug or a charging socket corresponding to the charging device;

[0026] The temperature data is digitally filtered to obtain the charging temperature.

[0027] According to a second aspect of the present disclosure, a charging control device is provided, the device comprising:

[0028] A charging module, configured to charge the power battery based on a rated current when the charging temperature is lower than a first threshold temperature;

[0029] a first execution module, configured to reduce the charging current of the power battery based on a fuzzy control mode when the charging temperature is greater than the first threshold temperature and less than a second threshold temperature, wherein the charging current decreases as the charging temperature increases in the fuzzy control mode;

[0030] The second execution module is used to charge the power battery based on a preset current when the charging temperature reaches the second threshold temperature, and the preset current is less than any charging current in the fuzzy control mode.

[0031] According to a third aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps of the method of the first aspect of the present disclosure are implemented.

[0032] According to a fourth aspect of the present disclosure, there is provided a vehicle-mounted terminal, comprising:

[0033] a memory having a computer program stored thereon;

[0034] A processor is used to execute the computer program in the memory to implement the steps of any one of the above methods.

[0035] The charging control method, device, storage medium and electronic device provided by the present disclosure charge the power battery based on the rated current when the charging temperature is lower than the first threshold temperature, reduce the charging current of the power battery based on the fuzzy control mode when the charging temperature is higher than the first threshold temperature and lower than the second threshold temperature, reduce the charging current of the power battery as the charging temperature increases under the fuzzy control mode, and charge the power battery based on the preset current when the charging temperature reaches the second threshold temperature, and the preset current is lower than any charging current under the fuzzy control mode. Thus, after the charging temperature rises to a certain temperature, the charging current can be adjusted more flexibly, and the charging time can be reduced and the charging efficiency can be improved under the premise of ensuring charging safety.

[0036] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0038] Figure 1The figure is a flow chart of a charging control method according to an exemplary embodiment.

[0039] Figure 2 is a schematic diagram showing another charging control method according to an exemplary embodiment.

[0040] Figure 3 The figure is a graph showing a relationship between a charging current and a charging temperature according to an exemplary embodiment.

[0041] Figure 4 is a structural diagram of a charging control device according to an exemplary embodiment.

[0042] Figure 5 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0043] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0044] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0045] In order to achieve the above object, the present disclosure provides a charging control method. Figure 1 is a flow chart of a charging control method according to an exemplary embodiment. Figure 1 The method comprises the following steps S11-S13, wherein:

[0046] Step S11: when the charging temperature is lower than the first threshold temperature, the power battery is charged based on the rated current.

[0047] It should be noted that the charging control method in this embodiment can be applied to various battery charging scenarios. For example, it can be applied to the charging environment of mobile terminals and the charging environment of vehicle-mounted power batteries. The temperature acquisition sensor set on the charging path is used to detect the temperature changes of each charging component during the charging process, so as to determine the charging temperature in the charging circuit. During the charging process of the battery, the corresponding charging temperature needs to be controlled within a certain temperature range to ensure charging safety. For example, in the charging environment of a mobile phone terminal, the battery corresponding to the mobile phone terminal usually needs to be kept in a temperature range of -20°C to 60°C to ensure charging safety. However, under normal circumstances, the battery can be charged for a long time in a charging temperature environment of -20℃~40℃; when the charging time is short, charging the battery in a charging temperature environment of 40℃~60℃ can ensure charging safety, so when the charging temperature reaches 40°, the charging current of the battery needs to be adjusted; similarly, in the charging scenario of the vehicle-mounted power battery, the charging temperature of the battery needs to be maintained in the temperature range of 0℃~110℃, and the power battery can be continuously charged at a charging temperature of 0℃~90℃; after exceeding 90℃, the charging current of the power battery needs to be adjusted to gradually slow down the charging temperature, thereby ensuring charging safety. In this embodiment, in order to ensure that the battery can be charged safely, the charging temperature needs to be controlled within a certain temperature range, where the first threshold temperature is the maximum temperature that the battery can withstand under 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 charging safety. When the charging temperature rises to the first threshold temperature, the charging of the power battery does not need to be stopped immediately, but the charging current needs to be reduced to avoid battery damage caused by a sharp rise in charging temperature. For example, in the charging scenario of a mobile terminal, the temperature of 40°C is the first threshold temperature in the charging scenario; in the charging scenario of a vehicle battery, the temperature of 90°C is the first threshold temperature in the charging scenario.

[0048] It is understandable that, in order to ensure charging efficiency, when the charging temperature is lower than the first threshold temperature, the power battery is charged with the rated current, which is the maximum current that the power battery can withstand. The power battery is charged based on the rated current to ensure that the charging efficiency is guaranteed when the charging temperature does not reach the first threshold temperature, thereby reducing the charging time of the power battery.

[0049] Optionally, before the above step S11, the charging control method further includes:

[0050] (1) In response to a charging start signal, temperature data of a charging plug or a charging socket corresponding to the charging device is obtained.

[0051] (2) The temperature data is digitally filtered to obtain the charging temperature.

[0052] It can be understood that, in this embodiment, after receiving the charging start signal, the corresponding charging temperature data is generated by acquiring the temperature data of the charging plug or the charging socket in the charging path.

[0053] In the charging path of the charging plug, charging harness, charging socket, and battery, the temperature data of the charging plug and the charging socket are relatively easy to collect, and can clearly reflect the temperature conditions of the charging path during the charging process. Therefore, in this embodiment, a temperature sensor is arranged at the 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 collecting data on the temperature of the charging plug or the charging socket, due to the influence of the external ambient temperature, it is easy to cause abnormal fluctuations in the temperature data. Therefore, in this embodiment, after obtaining the temperature data of the charging plug or the charging socket, it is necessary to perform digital filtering on the data to eliminate the influence of other interference factors such as ambient temperature, so as to obtain the charging temperature corresponding to the charging path.

[0054] Step S12, when the charging temperature is greater than the first threshold temperature and less than the second threshold temperature, reducing the charging current of the power battery based on the fuzzy control mode, in which the charging current decreases as the charging temperature increases.

[0055] It can be understood that based on the formula Q = I 2 Rt (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, the power battery is charged based on the rated current, that is, I is a constant value, the charging path remains unchanged during the charging process, that is, R remains constant, and the charging temperature increases accordingly with the increase of charging time, that is, the charging temperature is directly proportional to the charging time. In the process of charging at the rated current, as the charging time increases, the charging temperature will also increase successively. When the charging temperature reaches the first threshold temperature and the power battery is still not fully charged, the charging current needs to be adjusted to avoid the damage to the power battery caused by the continuous heating of the charging circuit. In this embodiment, the second threshold temperature is the warning temperature value of the power battery during the charging process. When the charging temperature reaches the second threshold temperature, the charging current needs to be greatly reduced to ensure charging safety. The second threshold temperature setting is related to the internal structure of the power battery. For example, when the power battery is a lithium battery in a mobile terminal, the second threshold temperature can be set to 50°C; when the power battery is a vehicle-mounted power battery, the second threshold temperature can be set to 105°C.

[0056] As the charging time increases, when the charging temperature rises to the range between the first threshold temperature and the second threshold temperature, continuing to charge the power battery at the rated current will easily cause the charging temperature to rise sharply. If the power battery is not fully charged, the charging temperature will reach a dangerous charging temperature, which will cause charging to stop. Therefore, it is necessary to reduce the charging current to slow down the rising trend of the charging temperature.

[0057] In this embodiment, when the charging temperature is between the first threshold temperature and the second threshold temperature, the charging current of the power battery is reduced based on the fuzzy control mode. In this fuzzy control mode, the charging current gradually decreases on the basis of the rated current as the charging temperature increases. It should be noted that the charging time of the power battery is positively correlated with the size of the charging current. Therefore, in this fuzzy control mode, the charging current will not be reduced by a large margin at one time, but it is necessary to control the charging current to gradually decrease as the charging temperature increases, so as to ensure that the charging efficiency is improved while slowing down the charging temperature increase trend.

[0058] Optionally, the above step S12 includes:

[0059] (1) In the fuzzy control mode, determine the percentage of temperature increase per unit time of the charging temperature.

[0060] (2) Reduce the charging current per unit time according to the percentage.

[0061] It can be understood that in the fuzzy control mode, the charging temperature gradually decreases as the charging temperature increases. In this embodiment, the reduction ratio of the charging current is the same as the increase ratio of the charging temperature. Based on the heat calculation formula Q = I 2 Rt, when other conditions remain constant, the charging temperature gradually increases with time. Therefore, by calculating the percentage of the increase in the charging temperature per unit time, the rising trend of the charging temperature is determined, and based on the percentage, the charging current is reduced by the percentage on the basis of the original charging current. For example, when the charging current of the power battery is 50A and the charging temperature is 95°C at this time, the charging temperature changes by 100°C within a unit time of 1s, and the corresponding percentage of increase in the charging temperature is 5.2%; at this time, the charging current needs to be reduced by 5.2% within a unit time of 1s, that is, the changed charging current is 50A (1-5.2%) = 47.4A, and the corresponding rate of change of the reduction in the charging current is the rate of change of the increase in the charging temperature within the unit time.

[0062] Optionally, in another possible implementation, the correspondence between the charging current and the charging temperature change can be preset. For example, the step size of the current reduction can be preset. The step size can be understood as the current value that the charging current needs to be reduced correspondingly for every 1°C decrease in the charging temperature. The step size can be constant, or different step sizes can be set according to different temperature ranges of the charging temperature.

[0063] By controlling the charging current under the fuzzy control mode, the maximum charging current is guaranteed while ensuring charging safety, thereby improving the charging efficiency and shortening the charging time of the power battery, thereby further ensuring charging safety.

[0064] Optionally, based on the above embodiment, the control method may further include:

[0065] 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 to keep the charging temperature constant.

[0066] It should be noted that, in this embodiment, the constant temperature current is the maximum value that will cause the temperature to rise when the charging current increases, and under normal circumstances, the constant temperature current of the power battery is smaller than the rated current. When the charging temperature is between the first threshold temperature and the second threshold temperature, in the fuzzy control mode, the charging current gradually decreases from the rated current. When the charging current is reduced to the constant temperature current, the constant temperature current is the maximum current value that causes the temperature change, and further reducing the charging current will not slow down the rising trend of the charging temperature. 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 maintained to charge the power battery until the charging temperature rises to the second threshold temperature. Optionally, for other charging scenarios where 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, thereby reducing the damage to the power battery caused by the continuous increase in the charging temperature.

[0067] Step S13: when the charging temperature reaches the second threshold temperature, the power battery is charged based on a preset current, where the preset current is less than any charging current in the fuzzy control mode.

[0068] It is understandable that the second threshold temperature in this embodiment is still within the temperature range of safe charging, but when the charging temperature reaches the second threshold temperature, the charging current needs to be significantly reduced to avoid damage to the power battery caused by the continuous increase in 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, wherein the preset current is less 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 of the power battery to the charging temperature. For example, the preset current can be set to 1 / 2 of the rated current, or the preset current can be set to 1 / 3 of the rated current.

[0069] Optionally, the control method may further include:

[0070] (1) When the charging temperature reaches the third threshold temperature, charging is stopped.

[0071] (2) A charging fault signal is issued, and the third threshold temperature is greater than the second threshold temperature.

[0072] It is understandable that the third threshold temperature in this embodiment is the maximum charging temperature acceptable for the power battery charging process, and the third threshold temperature is greater than the second threshold temperature. When the third threshold temperature is exceeded, it indicates that the charging is abnormal, and continuing to output electric energy to the power battery is likely to cause damage to the power battery. Normally, according to the above embodiment, when the charging temperature is at the third threshold temperature, the power battery can be fully charged after continuous charging for a certain period of time. When the charging temperature reaches the third threshold temperature and the power battery is still not fully charged, it indicates that the charging temperature is abnormal due to some fault during the charging process. Therefore, when the charging temperature reaches the third threshold temperature, it is necessary to stop inputting electric energy to the power battery and send a charging fault signal to prompt relevant technicians to troubleshoot the charging fault.

[0073] Figure 2 is a schematic diagram of another charging control method according to an exemplary embodiment. Figure 2 , the charging control method comprises:

[0074] After receiving the charging start command, the charging temperature in the charging path is detected based on the temperature sensor, and after digital filtering, it is determined what temperature range the charging temperature is in. When the charging temperature is less than 90°C, the power battery is charged with the rated current; when the charging temperature is greater than 90°C and less than 105°C, the power battery is charged with a constant temperature current; when the charging temperature is greater than 105°C and less than 110°C, the charging current is reduced to 1 / 2 of the rated current to charge the power battery; when the charging temperature is greater than 110°C, the input of electrical energy to the power battery is stopped. Figure 3is a graph showing a relationship between a charging current and a charging temperature according to an exemplary embodiment, see Figure 3 , when the charging temperature is within the range of 0℃~90℃, the power battery is charged with the rated current, and the charging temperature continues to rise. When the charging temperature is within the range of 90℃~105℃, the charging current gradually decreases on the basis of the rated current as the charging temperature increases; when the charging temperature is within the range of 105℃-110℃, the charging current is reduced to 1 / 2 of the rated current, and the charging temperature at this time will continue to rise to a certain value due to the influence of other factors such as thermal effects; when the charging temperature is higher than 110℃, it means that the power battery is affected by other fault factors, causing the charging temperature to continue to rise. Correspondingly, the charging current is reduced to 0℃ to avoid damage caused by the input of electrical energy to the power battery and the continued increase in the charging temperature.

[0075] Optionally, the above step S13 includes:

[0076] When the charging temperature is greater than the second threshold temperature and less than the third threshold temperature, half of the rated current is determined as the preset current.

[0077] The power battery is charged based on a preset current.

[0078] It can be understood that in this embodiment, when the charging temperature is between the second threshold temperature and the third threshold temperature, the power battery is charged based on a 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 to ensure the charging efficiency of the power battery while ensuring charging safety.

[0079] Optionally, the charging control method may further include:

[0080] When the charging temperature is less than the first threshold temperature, a difference between the current charging current and the rated current is determined.

[0081] When the difference between the current charging current and the rated current is greater than the preset current threshold, the current charging current is increased to the transition charging current according to the unit adjustment step, and maintained for a preset time after reaching the transition charging current.

[0082] When the charging temperature is still lower than the first threshold temperature after being maintained for a preset period of time, a difference between the transition charging current and the rated current is determined.

[0083] When the difference between the transition charging current and the rated current is less than a preset current threshold, the power battery is charged based on the rated current.

[0084] It should be noted that, in this embodiment, the charging temperature can be reduced based on other external environmental factors. For example, a cooling device can be arranged on the charging path. When the charging temperature reaches the corresponding temperature value, the cooling device is turned on to cool down the various components of the charging path, thereby reducing the charging temperature. It is also possible that after the charging current is reduced to a certain vertical, the charging temperature loses its heat source and stops heating, 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 less than the first threshold temperature, charging the power battery based on the original charging current will reduce the charging efficiency. Therefore, in this embodiment, when the charging temperature is lower than the first threshold temperature, the charging current needs to be increased synchronously. However, in the process of increasing the charging current, if the power battery receives a sharply increased charging current, it is easy to cause damage to the power battery. In this embodiment, when the charging temperature is less than the first threshold temperature, the difference between the current charging current and the rated current is determined. When the difference is greater than the preset current threshold, it means that the current charging current directly jumps to the rated current, which is easy to cause damage to the power battery. Therefore, it is necessary to increase the current charging current to the transition charging current according to the unit adjustment step size, and maintain the transition charging current for a preset time. Monitor the process of charging the power battery based on the transition charging current. When the charging temperature is still lower than the first threshold temperature during the process, determine the difference between the transition charging current and the rated current. When the difference is lower than the preset current threshold, change the charging current to the rated current to charge the power battery. When the difference between the transition charging current and the rated current is greater than the preset current threshold, it also means that charging the power battery directly from the transition charging current to the rated current is likely to cause damage to the power battery. It is necessary to continue to control the current charging current to approach the rated current according to the unit adjustment step size until the difference is lower than the preset current threshold, and change the current charging current to the rated charging current. For example, the rated current is 50A, the current charging current is 20A, the preset current threshold is 10A, and the unit adjustment step is 10A; when the current charging temperature is less than the first threshold temperature, it is determined that the difference between the rated current and the current charging current is 50A, which is greater than the preset current threshold 10A, then the current charging current is adjusted to a transition charging current of 30A, and the power battery is charged based on the transition charging current; until the transition charging current is 60A, the charging current is adjusted to 50A, and the charging current of 50A is maintained to charge the power battery. In this embodiment, through the step-type charging current control, after the charging temperature is less than the first threshold temperature, the charging current of the power battery is gradually increased to avoid damage to the power battery due to a sharp increase in the charging current.

[0085] Through the above implementation, when the charging temperature is lower than the first threshold temperature, the power battery is charged based on the rated current; when the charging temperature is higher than the first threshold temperature and lower than the 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 decreases as the charging temperature increases; when the charging temperature reaches the second threshold temperature, the power battery is charged based on the preset current, which is lower than any charging current in the fuzzy control mode. Thus, after the charging temperature rises to a certain temperature, the charging current can be adjusted more flexibly, and the charging time can be reduced and the charging efficiency can be improved under the premise of ensuring charging safety.

[0086] Figure 4 is a structural diagram of a charging control device according to an exemplary embodiment. Figure 4 The charging control device 100 includes: a charging module 110, a first execution module 120 and a second execution module 130.

[0087] The charging module 110 is used to charge the power battery based on the rated current when the charging temperature is lower than the first threshold temperature;

[0088] A first execution module 120, configured to reduce the charging current of the power battery based on a fuzzy control mode when the charging temperature is greater than a first threshold temperature and less than a second threshold temperature, wherein the charging current decreases as the charging temperature increases in the fuzzy control mode;

[0089] The second execution module 130 is used to charge the power battery based on a preset current when the charging temperature reaches a second threshold temperature, and the preset current is less than any charging current in the fuzzy control mode.

[0090] Optionally, the first execution module 120 may also be used to:

[0091] In the fuzzy control mode, the percentage of the temperature increase per unit time of the charging temperature is determined;

[0092] Reduce the charging current per unit time according to the percentage.

[0093] Optionally, the charging control device 100 further includes a third execution module, and the third execution module is used to:

[0094] 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 to keep the charging temperature constant.

[0095] Optionally, the charging device 100 further includes an alarm module, which is used to:

[0096] When the charging temperature reaches the third threshold temperature, charging is stopped;

[0097] A charging fault signal is issued, and the third threshold temperature is greater than the second threshold temperature.

[0098] Optionally, the second execution module 130 may also be used to:

[0099] When the charging temperature is greater than the second threshold temperature and less than the third threshold temperature, determining to use half of the rated current as the preset current;

[0100] The power battery is charged based on a preset current.

[0101] Optionally, the charging control device 100 further includes a fourth execution module, and the fourth execution module is used to:

[0102] When the charging temperature is less than the first threshold temperature, determining the difference between the current charging current and the rated current;

[0103] When the difference between the current charging current and the rated current is greater than the preset current threshold, the current charging current is increased to the transition charging current according to the unit adjustment step, and maintained for a preset time after reaching the transition charging current;

[0104] When the charging temperature is still lower than the first threshold temperature after the preset time period, determining the difference between the transition charging current and the rated current;

[0105] When the difference between the transition charging current and the rated current is less than a preset current threshold, the power battery is charged based on the rated current.

[0106] Optionally, the charging control device 100 further includes a collection module, which is used to:

[0107] In response to the charging start signal, acquiring temperature data of a charging plug or a charging socket corresponding to the charging device;

[0108] The temperature data is digitally filtered to obtain the charging temperature.

[0109] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0110] Figure 5 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Figure 5 As shown, 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.

[0111] The processor 501 is used to control the overall operation of the electronic device 500 to complete all or part of the steps in the above-mentioned charging control method. The memory 502 is used to store various types of data to support the operation of the electronic device 500. For example, these data may include instructions for any application or method used to operate on the electronic device 500, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 502 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 503 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 502 or sent through the communication component 505. The audio component 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, and the above-mentioned other interface modules may be keyboards, mice, 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), 4G, 5G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 505 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0112] In an exemplary embodiment, the electronic device 500 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned charging control method.

[0113] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned charging control method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 502 including program instructions, and the above-mentioned program instructions can be executed by the processor 501 of the electronic device 500 to complete the above-mentioned charging control method.

[0114] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program executable by a programmable device. The computer program has a code portion for executing the above-mentioned charging control method when executed by the programmable device.

[0115] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0116] It should also be noted that the various specific technical features described in the above specific implementation methods can be combined in any suitable manner without contradiction.

[0117] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A charging control method, characterized in that: include: When the charging temperature is lower than the first threshold temperature, charging the power battery based on the rated current; When the charging temperature is greater than the first threshold temperature and less than the second threshold temperature, the charging current of the power battery is reduced based on a fuzzy control mode, and the charging current is reduced as the charging temperature increases in the fuzzy control mode; In the fuzzy control mode, if the charging current is reduced to the constant temperature current, the constant temperature current is maintained to charge the power battery until the charging temperature rises to the second threshold temperature; When the charging temperature reaches the second threshold temperature, charging the power battery based on a preset current, wherein the preset current is less than any charging current in the fuzzy control mode; The reducing the charging current of the power battery based on the fuzzy control mode includes: In the fuzzy control mode, determining the percentage of the charging temperature increase per unit time; The charging current is reduced within the unit time according to the percentage.

2. The control method according to claim 1, characterized in that: The method further comprises: When the charging temperature reaches a third threshold temperature, stopping charging; A charging fault signal is issued, and the third threshold temperature is greater than the second threshold temperature.

3. The control method according to claim 2, characterized in that: When the charging temperature reaches the second threshold temperature, charging the power battery based on a preset current includes: When the charging temperature is greater than the second threshold temperature and the charging temperature is less than the third threshold temperature, determining to use half of the rated current as the preset current; The power battery is charged based on the preset current.

4. The control method according to claim 1, characterized in that: The method further comprises: When the charging temperature is less than the first threshold temperature, determining a difference between a current charging current and the rated current; When the difference between the current charging current and the rated current is greater than a preset current threshold, the current charging current is increased to a transition charging current according to a unit adjustment step, and maintained for a preset time after reaching the transition charging current; When the charging temperature after the preset time is maintained is still lower than the first threshold temperature, determining the difference between the transition charging current and the rated current; When the difference between the transition charging current and the rated current is less than the preset current threshold, the power battery is charged based on the rated current.

5. The control method according to claim 1, characterized in that: The method further comprises: In response to the charging start signal, acquiring temperature data of a charging plug or a charging socket corresponding to the charging device; The temperature data is digitally filtered to obtain the charging temperature.

6. A charging control device, characterized in that: include: A charging module, configured to charge the power battery based on a rated current when the charging temperature is lower than a first threshold temperature; a first execution module, configured to reduce the charging current of the power battery based on a fuzzy control mode when the charging temperature is greater than the first threshold temperature and less than a second threshold temperature, wherein the charging current decreases as the charging temperature increases in the fuzzy control mode; In the fuzzy control mode, if the charging current is reduced to the constant temperature current, the constant temperature current is maintained to charge the power battery until the charging temperature rises to the second threshold temperature; The reducing the charging current of the power battery based on the fuzzy control mode comprises: in the fuzzy control mode, determining the percentage of the temperature increase of the charging temperature in a unit time; and reducing the charging current in the unit time according to the percentage; The second execution module is used to charge the power battery based on a preset current when the charging temperature reaches the second threshold temperature, and the preset current is less than any charging current in the fuzzy control mode.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 5 are implemented.

8. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 5.

Images