CN108688504B - Battery charging control method and device, automobile and computing equipment - Google Patents

Battery charging control method and device, automobile and computing equipment Download PDF

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Publication number
CN108688504B
CN108688504B CN201810670619.1A CN201810670619A CN108688504B CN 108688504 B CN108688504 B CN 108688504B CN 201810670619 A CN201810670619 A CN 201810670619A CN 108688504 B CN108688504 B CN 108688504B
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time
battery
charging
preset
current
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CN108688504A (en
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李诗萌
代康伟
张骞慧
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention provides a battery charging control method, a battery charging control device, an automobile and computing equipment, wherein the method comprises the following steps: monitoring the variation of the battery temperature per unit time during the charging process; if the unit time variation is larger than a first preset value within a preset duration, calculating the real-time remaining time required by the battery to reach a preset maximum charging temperature according to the unit time variation within the preset duration; when the real-time remaining time is larger than the preset system temperature safety time, obtaining the remaining charging time required for fully charging the battery; and adjusting the charging current of the battery according to the residual charging time, the real-time residual time and the preset system temperature safety time. The dynamic adjustment of battery charging is realized, the charging efficiency is effectively improved, and the charging time is shortened.

Description

Battery charging control method and device, automobile and computing equipment
Technical Field
The invention relates to the technical field of charging, in particular to a battery charging control method and device, an automobile and computing equipment.
Background
The problems of energy crisis, environmental pollution, greenhouse effect and the like are increasingly serious, higher energy-saving and emission-reducing requirements are put forward to the automobile industry, and the development of new energy automobiles becomes a necessary trend of automobile industry revolution except that the traditional automobiles are further technically innovated to improve the energy-saving and emission-reducing effects. With the commercialization of the electric vehicle industry, at present, not only the electric charge needs to be paid in the public charging pile, but also the site charge needs to be paid according to the time of using the charging pile, how to improve the charging quality of the direct current quick charging and shorten the charging time of the whole vehicle become one of the important whole vehicle performances which are mainly concerned by users, and at present, the problem of the charging time becomes one of the most serious challenges in the popularization process of electric vehicles.
In the related technology, various direct current quick charging strategies exist, each whole vehicle manufacturer can customize a quick charging strategy according to different battery cell characteristics, a mainstream strategy roughly adopts a constant current charging method, a corresponding current value is obtained by dynamically checking a table according to an ammeter corresponding to voltage and temperature provided by the battery cell manufacturer, and a charging mode is always constant current charging. The method cannot dynamically adjust the current and has long charging time.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a battery charging control method, device, automobile and computing device, so as to solve the problem of long charging time.
In order to solve the above technical problem, an embodiment of the present invention provides a battery charging control method, including:
monitoring the variation of the battery temperature per unit time during the charging process;
if the unit time variation is larger than a first preset value within a preset duration, calculating the real-time remaining time required by the battery to reach a preset maximum charging temperature according to the unit time variation within the preset duration;
when the real-time remaining time is larger than the preset system temperature safety time, obtaining the remaining charging time required for fully charging the battery;
and adjusting the charging current of the battery according to the residual charging time, the real-time residual time and the preset system temperature safety time.
Preferably, the step of adjusting the charging current of the battery according to the remaining charging time, the real-time remaining time and the preset system temperature safety time includes:
if the real-time remaining time is less than the remaining charging time and the difference value between the remaining charging time and the real-time remaining time is greater than the preset system temperature safety time, performing current reduction processing on the charging current of the battery;
and/or;
and if the real-time remaining time is greater than the remaining charging time and the difference value between the real-time remaining time and the remaining charging time is greater than the preset system temperature safety time, performing current rising processing on the charging current of the battery.
Preferably, the step of performing a current boosting process on the charging current of the battery includes:
controlling the charging current to increase by a first current value, and controlling the charging current not to be larger than a third current value, wherein the first current value is determined according to the battery capacity of the battery;
the step of performing a current reduction process on the charging current of the battery comprises:
and controlling the charging current to reduce a second current value, wherein the charging current is controlled not to be smaller than a fourth current value, the second current value is determined according to the battery capacity of the battery, and the first current value and the second current value are the same or different.
Preferably, the step of monitoring the amount of change per unit time in the battery temperature during charging includes:
if the current temperature of the battery is in a first preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a first preset time period;
if the current temperature of the battery is in a second preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a second preset time period;
if the current temperature of the battery is in a third preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a third preset time period;
wherein the temperature in the third preset interval is greater than the temperature in the second preset interval, the temperature in the second preset interval is greater than the temperature in the first preset interval, and the first preset time period, the second preset time period and the third preset time period are sequentially reduced.
Preferably, after calculating the real-time remaining time required for the battery to reach the preset maximum charging temperature, the method further comprises:
when the real-time remaining time is less than the preset system temperature safety time, judging whether the one-time real-time remaining time is less than the preset system temperature safety time at an interval of a fourth preset time period;
and if the real-time remaining time is judged to be less than the preset system temperature safety time by the continuous preset times, reducing the charging current of the battery.
According to another aspect of the present invention, there is also provided a battery charging control apparatus, including:
the monitoring module is used for monitoring the unit time variation of the battery temperature in the charging process;
the calculation module is used for calculating the real-time remaining time required by the battery to reach the preset maximum charging temperature according to the unit time variation in the preset duration if the unit time variation is larger than a first preset value in the preset duration;
the acquisition module is used for acquiring the residual charging time required for fully charging the battery when the real-time residual time is greater than the preset system temperature safety time;
and the processing module is used for adjusting the charging current of the battery according to the residual charging time, the real-time residual time and the preset system temperature safety time.
Preferably, the processing module comprises:
the first processing unit is used for carrying out current reduction processing on the charging current of the battery if the real-time remaining time is less than the remaining charging time and the difference value between the remaining charging time and the real-time remaining time is greater than the preset system temperature safety time;
and/or;
and the second processing unit is used for performing current rise processing on the charging current of the battery if the real-time remaining time is greater than the remaining charging time and the difference value between the real-time remaining time and the remaining charging time is greater than the preset system temperature safety time.
Preferably, the first processing unit is specifically configured to:
controlling the charging current to increase by a first current value, and controlling the charging current not to be larger than a third current value, wherein the first current value is determined according to the battery capacity of the battery;
the second processing unit is specifically configured to:
and controlling the charging current to reduce a second current value, wherein the charging current is controlled not to be smaller than a fourth current value, the second current value is determined according to the battery capacity of the battery, and the first current value and the second current value are the same or different.
Preferably, the monitoring module is specifically configured to:
if the current temperature of the battery is in a first preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a first preset time period;
if the current temperature of the battery is in a second preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a second preset time period;
if the current temperature of the battery is in a third preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a third preset time period;
wherein the temperature in the third preset interval is greater than the temperature in the second preset interval, the temperature in the second preset interval is greater than the temperature in the first preset interval, and the first preset time period, the second preset time period and the third preset time period are sequentially reduced.
Preferably, the apparatus further comprises:
the judging module is used for judging whether the real-time remaining time is less than the preset system temperature safety time or not at intervals of a fourth preset time period when the real-time remaining time is less than the preset system temperature safety time;
and the processing module is also used for carrying out current reduction processing on the charging current of the battery if the real-time remaining time is judged to be less than the preset system temperature safety time by continuous preset times.
According to another aspect of the present invention, an automobile is further provided, including the battery charging control apparatus described above.
According to another aspect of the present invention, there is also provided a computing device including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the battery charging control method as described above when executed by the processor.
Compared with the prior art, the battery charging control method, the battery charging control device, the automobile and the computing equipment provided by the embodiment of the invention at least have the following beneficial effects:
according to the embodiment of the invention, the charging current of the battery is adjusted by calculating the real-time remaining time required for reaching the preset maximum charging temperature, the remaining charging time required for full charging and the preset system temperature safety time, so that the dynamic regulation of the charging of the battery is realized, the charging efficiency is effectively improved, and the charging time is shortened.
Drawings
FIG. 1 is a flow chart of a battery charging control method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery charging control method according to an embodiment of the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Referring to fig. 1, an embodiment of the present invention provides a battery charging control method, including:
step 101, monitoring the unit time variation of the battery temperature in the charging process;
here, the amount of change in the battery temperature per unit time may also be represented by a temperature rise slope, that is, the temperature of the battery during charging is monitored, and the temperature rise slope during charging is obtained.
The monitoring may be real-time monitoring with high accuracy, but because real-time monitoring has high energy consumption, in an embodiment, the monitoring may also be:
if the current temperature of the battery is in a first preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a first preset time period;
if the current temperature of the battery is in a second preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a second preset time period;
if the current temperature of the battery is in a third preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a third preset time period;
wherein the temperature in the third preset interval is greater than the temperature in the second preset interval, the temperature in the second preset interval is greater than the temperature in the first preset interval, and the first preset time period, the second preset time period and the third preset time period are sequentially reduced.
In this embodiment, when the temperature of the battery is in different intervals, the monitoring is performed at different intervals, for example, when the temperature of the battery is low, even if the charging current is greatly increased, the temperature of the battery does not reach the safe charging temperature in a short time, so the monitoring frequency can be low, and when the temperature of the battery is high, the influence of changing the charging current on the temperature is large, which easily causes the temperature of the battery to increase, and even exceeds the safe charging temperature, so the battery needs to be monitored at a high frequency. Here, an alternative embodiment is provided, in which the first preset interval is 45 ℃ or less, the amount of change per unit time may be acquired at intervals of about 6 minutes, the second preset interval is 45 to 55 ℃, the amount of change per unit time may be acquired at intervals of about 3 minutes, and the third preset interval is greater than 55 ℃, and the amount of change per unit time may be acquired at intervals of about 1 minute.
102, if the unit time variation is larger than a first preset value within a preset duration, calculating the real-time remaining time required by the battery to reach a preset maximum charging temperature according to the unit time variation within the preset duration;
here, the first preset value is a positive number, and may be selected to be 0 or slightly greater than 0, and when the variation per unit time is greater than the first preset value within the preset duration, it indicates that the temperature of the battery will continue to increase while continuing to charge at the present current.
Here, the real-time remaining time required for the battery to reach the preset maximum charging temperature may be calculated as: and calculating the real-time remaining time required by the battery to reach the preset maximum charging temperature according to the current temperature and the unit time variation of the battery. For example, if the battery is currently 30 ℃ and the amount of change per unit time is 1, this indicates a 1 ℃ increase per minute, and if the preset maximum charging temperature is 60 ℃, the required real-time remaining time is 30 minutes. The real time remaining time may be understood as the time to reach the maximum charging temperature at the present current charging, where the capacity problem of the battery is not considered.
103, when the real-time remaining time is greater than the preset system temperature safety time, obtaining the remaining charging time required for fully charging the battery;
here, the preset system temperature safety time will be explained. For a battery, the temperature change during charging tends to rise smoothly, but there exists a jump temperature, which is different for different battery cover jump temperatures and can be obtained according to experiments, for example, when a certain battery is charged with a stable current value, the temperature rise time of 40-50 ℃ is 20 minutes, but when 50 ℃, the temperature may rise sharply to the maximum charging temperature of the battery within only a few minutes, for example, 60 ℃, and when the temperature exceeds the temperature, the battery may be damaged or even cause damage to surrounding objects, and the jump temperature of the battery is about 50 ℃. For the battery, the charging temperature needs to be strictly controlled, if the battery reaches the jump temperature, the operable time for reducing the charging current again or no longer charging is short, for example, 5 minutes is needed for jumping to the maximum charging temperature when the battery reaches the jump temperature, a system temperature safety time needs to be set, the system temperature safety time is greater than the time for jumping to the maximum charging temperature when the battery reaches the jump temperature, for example, the system temperature safety time is set to 10 minutes, and when the battery is predicted to reach the maximum charging temperature, corresponding operation needs to be performed in advance by 10 minutes to improve the charging safety.
Here, the remaining charging time required to fully charge the battery may be obtained by: and acquiring the current residual capacity of the battery, wherein the residual capacity is the capacity capable of being continuously charged, the residual charging time is obtained according to the residual capacity and the current charging current, and t is the residual capacity (Ah)/the current value (A), and the residual capacity can be obtained according to the difference between the actual total capacity or the nominal capacity of the battery and the real-time capacity of the battery. The remaining charging time can be understood as the time during which the charging is full at the present current.
And 104, adjusting the charging current of the battery according to the residual charging time, the real-time residual time and the preset system temperature safety time.
The charging current of the battery is adjusted according to the remaining charging time, the real-time remaining time and the preset system temperature safety time, so that the dynamic adjustment of the charging of the battery is realized, the charging efficiency is effectively improved, and the charging time is shortened.
In an embodiment, the step of adjusting the charging current of the battery according to the remaining charging time, the real-time remaining time and the preset system temperature safety time may include:
if the real-time remaining time is less than the remaining charging time and the difference value between the remaining charging time and the real-time remaining time is greater than the preset system temperature safety time, performing current reduction processing on the charging current of the battery;
considering the temperature jump situation, it is also required to satisfy that the difference between the residual charging time t2 and the real-time residual time t1 is greater than the preset system temperature safety time △ t, i.e., t2-t1 > △ t, in other words, t2- △ t > t1, i.e., the time of reaching the maximum charging temperature minus the preset system temperature safety time is greater than the time of full charge, which indicates that the current reduction processing can avoid reaching the jump temperature, and the current reduction processing is safer at this time.
Of course, if the real-time remaining time is less than the remaining charging time, and the difference between the remaining charging time and the real-time remaining time is less than the preset system temperature safety time, the battery can be controlled to stop charging or perform current reduction processing within a time period, so that the charging safety is ensured. When the current reduction processing is performed, the charging current is reduced when the charging current is smaller than the real-time remaining time and smaller than the remaining charging time under the condition, and the difference value between the remaining charging time and the real-time remaining time is larger than the preset system temperature safety time;
and/or;
and if the real-time remaining time is greater than the remaining charging time and the difference value between the real-time remaining time and the remaining charging time is greater than the preset system temperature safety time, performing current rising processing on the charging current of the battery.
Accordingly, only the residual current processing in this case can improve the charging time and ensure the charging safety.
Of course, if the real-time remaining time is greater than the remaining charging time, and the difference between the real-time remaining time and the remaining charging time is less than the preset system temperature safety time, the battery can be controlled to stop charging or reduce current within a time period, so that the charging safety is ensured.
As to the current reduction processing and the current increase processing, in an embodiment of the present invention, the step of performing the current increase processing on the charging current of the battery may include:
controlling the charging current to increase by a first current value, and controlling the charging current not to be larger than a third current value, wherein the first current value is determined according to the battery capacity of the battery;
the step of performing a current reduction process on the charging current of the battery may include:
and controlling the charging current to reduce a second current value, wherein the charging current is controlled not to be smaller than a fourth current value, the second current value is determined according to the battery capacity of the battery, and the first current value and the second current value are the same or different.
Here, the first current value and the second current value may each be about 0.1C.
In step 102, after calculating the real-time remaining time required for the battery to reach the preset maximum charging temperature, the method may further include:
when the real-time remaining time is less than the preset system temperature safety time, judging whether the one-time real-time remaining time is less than the preset system temperature safety time at an interval of a fourth preset time period;
and if the real-time remaining time is judged to be less than the preset system temperature safety time by the continuous preset times, reducing the charging current of the battery.
Here, when the time for charging according to the present current to reach the maximum charging temperature, which is represented by the real-time remaining time, is less than the preset system temperature safety time, if the charging according to the present current is continued, danger may be caused due to the existence of the jump temperature, so that the current reduction processing needs to be performed, and of course, the battery may be controlled to stop charging within a time period, so as to ensure the safety of the battery.
Referring to fig. 2, according to another aspect of the present invention, an embodiment of the present invention further provides a battery charging control apparatus, including:
a monitoring module 201, configured to monitor a variation per unit time of a battery temperature during a charging process;
a calculating module 202, configured to calculate, according to the unit time variation in the preset duration, a real-time remaining time required for the battery to reach a preset maximum charging temperature if the unit time variation is greater than a first preset value within the preset duration;
an obtaining module 203, configured to obtain a remaining charging time required to fully charge the battery when the real-time remaining time is greater than a preset system temperature safety time;
and the processing module 204 is configured to adjust the charging current of the battery according to the remaining charging time, the real-time remaining time, and the preset system temperature safety time.
The control device of the embodiment of the invention can realize each process in the method embodiments, has corresponding beneficial effects, and is not repeated here to avoid repetition.
Preferably, the processing module 204 includes:
the first processing unit is used for carrying out current reduction processing on the charging current of the battery if the real-time remaining time is less than the remaining charging time and the difference value between the remaining charging time and the real-time remaining time is greater than the preset system temperature safety time;
and/or;
and the second processing unit is used for performing current rise processing on the charging current of the battery if the real-time remaining time is greater than the remaining charging time and the difference value between the real-time remaining time and the remaining charging time is greater than the preset system temperature safety time.
Preferably, the first processing unit is specifically configured to:
controlling the charging current to increase by a first current value, and controlling the charging current not to be larger than a third current value, wherein the first current value is determined according to the battery capacity of the battery;
the second processing unit is specifically configured to:
and controlling the charging current to reduce a second current value, wherein the charging current is controlled not to be smaller than a fourth current value, the second current value is determined according to the battery capacity of the battery, and the first current value and the second current value are the same or different.
Preferably, the monitoring module 201 is specifically configured to:
if the current temperature of the battery is in a first preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a first preset time period;
if the current temperature of the battery is in a second preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a second preset time period;
if the current temperature of the battery is in a third preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a third preset time period;
wherein the temperature in the third preset interval is greater than the temperature in the second preset interval, the temperature in the second preset interval is greater than the temperature in the first preset interval, and the first preset time period, the second preset time period and the third preset time period are sequentially reduced.
Preferably, the apparatus further comprises:
the judging module is used for judging whether the real-time remaining time is less than the preset system temperature safety time or not at intervals of a fourth preset time period when the real-time remaining time is less than the preset system temperature safety time;
the processing module 204 is further configured to perform current reduction processing on the charging current of the battery if it is determined that the real-time remaining time is less than the preset system temperature safety time for the preset number of times.
According to another aspect of the present invention, an automobile is further provided, including the battery charging control apparatus described above.
According to another aspect of the present invention, there is also provided a computing device including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the battery charging control method as described above when executed by the processor.
In summary, the embodiment of the present invention adjusts the charging current of the battery by calculating the real-time remaining time required to reach the preset maximum charging temperature, the remaining charging time required to be fully charged, and the preset system temperature safety time, thereby realizing dynamic adjustment of battery charging, effectively improving charging efficiency, and shortening charging time.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (12)

1. A battery charge control method, comprising:
monitoring the variation of the battery temperature per unit time during the charging process;
if the unit time variation is larger than a first preset value within a preset duration, calculating the real-time remaining time required by the battery to reach a preset maximum charging temperature according to the unit time variation within the preset duration;
when the real-time remaining time is longer than the preset system temperature safety time, obtaining the remaining charging time required for fully charging the battery, wherein the preset system temperature safety time is longer than the time required for jumping to the maximum charging temperature when the jumping temperature is reached;
and adjusting the charging current of the battery according to the residual charging time, the real-time residual time and the preset system temperature safety time.
2. The battery charging control method according to claim 1, wherein the step of adjusting the charging current of the battery according to the remaining charging time, the real-time remaining time, and the preset system temperature safety time comprises:
if the real-time remaining time is less than the remaining charging time and the difference value between the remaining charging time and the real-time remaining time is greater than the preset system temperature safety time, performing current reduction processing on the charging current of the battery;
and/or;
and if the real-time remaining time is greater than the remaining charging time and the difference value between the real-time remaining time and the remaining charging time is greater than the preset system temperature safety time, performing current rising processing on the charging current of the battery.
3. The battery charge control method according to claim 2, wherein the step of performing a current-up process on the charge current of the battery includes:
controlling the charging current to increase by a first current value, and controlling the charging current not to be larger than a third current value, wherein the first current value is determined according to the battery capacity of the battery;
the step of performing a current reduction process on the charging current of the battery comprises:
and controlling the charging current to reduce a second current value, wherein the charging current is controlled not to be smaller than a fourth current value, the second current value is determined according to the battery capacity of the battery, and the first current value and the second current value are the same or different.
4. The battery charge control method according to claim 1, wherein the step of monitoring the amount of change per unit time in the battery temperature during the charging process comprises:
if the current temperature of the battery is in a first preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a first preset time period;
if the current temperature of the battery is in a second preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a second preset time period;
if the current temperature of the battery is in a third preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a third preset time period;
wherein the temperature in the third preset interval is greater than the temperature in the second preset interval, the temperature in the second preset interval is greater than the temperature in the first preset interval, and the first preset time period, the second preset time period and the third preset time period are sequentially reduced.
5. The battery charge control method of claim 1, wherein after calculating the real-time remaining time required for the battery to reach the preset maximum charging temperature, the method further comprises:
when the real-time remaining time is less than the preset system temperature safety time, judging whether the one-time real-time remaining time is less than the preset system temperature safety time at an interval of a fourth preset time period;
and if the real-time remaining time is judged to be less than the preset system temperature safety time by the continuous preset times, reducing the charging current of the battery.
6. A battery charge control device, comprising:
the monitoring module is used for monitoring the unit time variation of the battery temperature in the charging process;
the calculation module is used for calculating the real-time remaining time required by the battery to reach the preset maximum charging temperature according to the unit time variation in the preset duration if the unit time variation is larger than a first preset value in the preset duration;
the obtaining module is used for obtaining the residual charging time required for fully charging the battery when the real-time residual time is greater than the preset system temperature safety time, and the preset system temperature safety time is greater than the time required for jumping to the maximum charging temperature when the jumping temperature is reached;
and the processing module is used for adjusting the charging current of the battery according to the residual charging time, the real-time residual time and the preset system temperature safety time.
7. The battery charge control device of claim 6, wherein the processing module comprises:
the first processing unit is used for carrying out current reduction processing on the charging current of the battery if the real-time remaining time is less than the remaining charging time and the difference value between the remaining charging time and the real-time remaining time is greater than the preset system temperature safety time;
and/or;
and the second processing unit is used for performing current rise processing on the charging current of the battery if the real-time remaining time is greater than the remaining charging time and the difference value between the real-time remaining time and the remaining charging time is greater than the preset system temperature safety time.
8. The battery charging control apparatus according to claim 7, wherein the first processing unit is specifically configured to:
controlling the charging current to increase by a first current value, and controlling the charging current not to be larger than a third current value, wherein the first current value is determined according to the battery capacity of the battery;
the second processing unit is specifically configured to:
and controlling the charging current to reduce a second current value, wherein the charging current is controlled not to be smaller than a fourth current value, the second current value is determined according to the battery capacity of the battery, and the first current value and the second current value are the same or different.
9. The battery charge control device of claim 6, wherein the monitoring module is specifically configured to:
if the current temperature of the battery is in a first preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a first preset time period;
if the current temperature of the battery is in a second preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a second preset time period;
if the current temperature of the battery is in a third preset interval, acquiring unit time variation of the primary battery in the charging process at intervals of a third preset time period;
wherein the temperature in the third preset interval is greater than the temperature in the second preset interval, the temperature in the second preset interval is greater than the temperature in the first preset interval, and the first preset time period, the second preset time period and the third preset time period are sequentially reduced.
10. The battery charge control apparatus of claim 6, further comprising:
the judging module is used for judging whether the real-time remaining time is less than the preset system temperature safety time or not at intervals of a fourth preset time period when the real-time remaining time is less than the preset system temperature safety time;
and the processing module is also used for carrying out current reduction processing on the charging current of the battery if the real-time remaining time is judged to be less than the preset system temperature safety time by continuous preset times.
11. An automobile characterized by comprising the battery charge control apparatus according to any one of claims 6 to 10.
12. A computing device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the battery charge control method according to any one of claims 1 to 5.
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