CN117382470A - Charging method, device, apparatus, medium, program product, and vehicle - Google Patents
Charging method, device, apparatus, medium, program product, and vehicle Download PDFInfo
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- CN117382470A CN117382470A CN202210782789.5A CN202210782789A CN117382470A CN 117382470 A CN117382470 A CN 117382470A CN 202210782789 A CN202210782789 A CN 202210782789A CN 117382470 A CN117382470 A CN 117382470A
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- 238000000034 method Methods 0.000 title claims abstract description 76
- 238000010438 heat treatment Methods 0.000 claims abstract description 184
- 230000008569 process Effects 0.000 claims abstract description 25
- 238000004590 computer program Methods 0.000 claims description 12
- 238000013021 overheating Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
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- 238000011217 control strategy Methods 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- 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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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a charging method, a charging device, a charging equipment, a charging medium, a charging program product and a vehicle. The method comprises the following steps: acquiring battery charging power, maximum output power of a charging pile and vehicle load power of a battery; heating the battery under the condition that the battery charging power is smaller than the target charging power; in the process of heating the battery, when the battery charging power increases to the target charging power, the heating of the battery is stopped. Therefore, the battery can be heated when the charging power of the battery is smaller than the target charging power, and when the charging power of the battery reaches the target charging power, the battery is stopped from being heated, so that the charging efficiency of the battery is fully improved, the resource waste caused by overheating is avoided, the battery is heated according to the actual charging information of the battery, and the charging efficiency of the battery is improved.
Description
Technical Field
The application belongs to the technical field of automobiles, and particularly relates to a charging method, a device, equipment, a medium, a program product and a vehicle.
Background
With the continuous development of the automobile industry, electric automobiles are also increasingly favored by people, but when the electric automobiles are charged at low temperature, the current allowed by the battery to be charged is small, so that the charging speed of the battery at low temperature is low. To solve this problem, an external heating device is generally used in the prior art to heat the power battery, and the temperature of the power battery is heated to a preset temperature, so as to increase the current allowed to charge the power battery.
However, when the external heating device in the prior art heats the battery, a fixed heating threshold is often adopted, namely, when the temperature of the battery is lower than a preset threshold, the heating is started, and when the temperature of the battery is higher than the preset threshold, the heating is stopped, so that the heating strategy has poor adaptability, the heating threshold of the battery can not be adjusted according to the actual situation of the vehicle, and the charging efficiency of the battery is easy to be low.
Disclosure of Invention
The embodiment of the application provides a charging method, a device, equipment, a medium, a program product and a vehicle, so as to improve the charging efficiency of the vehicle.
In a first aspect, an embodiment of the present application provides a charging method, including:
acquiring battery charging power, maximum output power of a charging pile and vehicle load power;
heating the battery under the condition that the battery charging power is smaller than a target charging power, wherein the target charging power is the difference value between the maximum output power of the charging pile and the vehicle load power;
and stopping heating the battery when the battery charging power is increased to the target charging power in the process of heating the battery.
In some embodiments, stopping heating the battery when the battery charging power increases to the target charging power during heating the battery comprises:
acquiring a first temperature of the battery when the battery charging power is increased to the target charging power in the process of heating the battery;
and stopping heating the battery when the temperature of the battery is increased by a preset temperature range from the first temperature.
In some embodiments, the heating the battery if the battery charging power is less than a target charging power comprises:
and under the condition that the battery charging power is smaller than the target charging power, heating the battery by a heating device with a first heating power, wherein the first heating power is the maximum heating power of the heating device, and the first heating power is smaller than the target charging power.
In some embodiments, the heating the battery further includes, when the battery charging power increases to the target charging power:
the heating device heats the battery by using second heating power, wherein the second heating power is preset heating power corresponding to a first temperature difference value, and the first temperature difference value is a difference value between the battery temperature and the ambient temperature.
In some embodiments, the method further comprises:
in case the battery charge is greater than a preset charge threshold,
acquiring a second temperature of the battery;
and heating the battery until the battery temperature is increased to the third temperature when the second temperature is smaller than the third temperature, wherein the third temperature is the battery temperature with the maximum battery capacity corresponding to the ambient temperature.
In a second aspect, an embodiment of the present application provides a charging device, including:
the first acquisition module is used for acquiring battery charging power, maximum output power of the charging pile and vehicle load power;
the heating module is used for heating the battery under the condition that the battery charging power is smaller than a target charging power, and the target charging power is the difference value between the maximum output power of the charging pile and the vehicle load power;
and the control module is used for stopping heating the battery when the battery charging power is increased to the target charging power in the process of heating the battery.
In a third aspect, an embodiment of the present application provides a charging device, including: a processor and a memory storing program instructions;
the processor, when executing the program instructions, implements a method as described above in the first aspect.
In a fourth aspect, embodiments of the present application provide a vehicle including: the charging device of the above second aspect or the charging apparatus of the above third aspect.
In a fifth aspect, embodiments of the present application provide a storage medium, where computer program instructions are stored on the storage medium, the computer program instructions implementing the method according to the first aspect, when executed by a processor.
According to the charging method, the device, the equipment, the medium, the program product and the vehicle, firstly, battery charging power, charging pile maximum output power and vehicle load power of a battery are obtained, target charging power of the battery is determined through the difference value between the charging pile maximum output power and the vehicle load power, and the battery is heated under the condition that the battery charging power is smaller than the target charging power; in the process of heating the battery, when the battery charging power increases to the target charging power, the heating of the battery is stopped. Therefore, the battery can be heated when the charging power of the battery is smaller than the target charging power, the charging power of the battery is increased along with the increase of the temperature of the battery, and when the charging power of the battery reaches the target charging power, the heating is stopped, so that the charging efficiency of the battery is fully improved, the resource waste caused by overheating is avoided, and the battery is heated according to the actual charging information of the battery, and the charging efficiency of the battery is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.
Fig. 1 is a schematic flow chart of a charging method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a charging device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.
It is noted that relational terms such as first and second, and the like are 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. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
When the electric automobile is charged at a low temperature, the charging speed of the power battery at the low temperature is low because the charging current of the power battery is low, so that in order to improve the charging speed of the power battery at the low temperature, an external heating device is needed to heat the power battery, so that the temperature of the power battery is quickly increased to a proper temperature, and the charging current of the power battery is improved.
In the prior art, in the current common alternating-current charging, the power battery heating control is a control strategy based on a fixed heating threshold, and when the temperature of the power battery is lower than the temperature threshold (such as 5 ℃), a heating device is used for heating the power battery; heating is stopped when the battery temperature is above the threshold. The heating strategy of the power battery does not fully consider the charging characteristics of the power battery, the power of the alternating-current charging equipment and the consumed power of the high-voltage accessories, and the phenomenon that the charging speed of the power battery is always slow due to unreasonable set heating threshold value during alternating-current charging can exist.
Thus, the applicant found that the heating strategy in the existing power battery heating technology has poor adaptability, and the heating threshold of the battery cannot be adjusted according to the actual situation of the vehicle, so that the battery charging efficiency is low easily.
Based on the above research findings, embodiments of the present application provide a charging method, a device, an apparatus, a storage medium, and a vehicle, which are used to solve the above technical problems.
The charging method provided in the embodiment of the present application will be described first.
Fig. 1 is a schematic flow chart of a charging method according to an embodiment of the present application. As shown in fig. 1, the method may include the following steps S101 to S104:
s101, acquiring battery charging power of a battery, maximum output power of a charging pile and vehicle load power;
s102, heating the battery under the condition that the battery charging power is smaller than a target charging power, wherein the target charging power is the difference value between the maximum output power of the charging pile and the load power of the vehicle;
s103, when the charging power of the battery is increased to the target charging power in the process of heating the battery, acquiring a first temperature of the battery at a first moment.
The specific implementation of each of the above steps will be described in detail below.
In this embodiment of the application, when the charging power of the battery is less than the target charging power, the battery is heated, and along with the rise of the battery temperature, the charging power of the battery is also raised, and when the charging power of the battery reaches the target charging power, the heating is stopped, so that the charging efficiency of the battery is fully improved, the waste of resources caused by overheating is avoided, and the battery is heated according to the actual charging information of the battery, and the charging efficiency of the battery is improved.
In S101, battery charge power of the battery, charging pile maximum output power, and vehicle load power are acquired.
Specifically, the charging current of the battery, the charging voltage of the battery, the charging power of the charging post, and the consumed power of the vehicle load may be acquired in real time through the BMS battery system.
In some embodiments, battery charge power may be calculated based on a battery charge current and a battery charge voltage.
Since the battery has a limited charge and discharge capability at a low temperature, if the battery is charged or discharged with an excessive power at a low temperature, the battery is damaged or normal performance of the battery cannot be exerted, and thus, in S102, the battery is heated if the battery charge power is less than the target charge power.
The target charging power is the difference between the maximum output power of the charging pile and the load power of the vehicle, namely the maximum chargeable power of the battery.
Specifically, when the battery charging power is smaller than the target charging power, it is indicated that the current charging power of the battery is smaller and the maximum chargeable power of the battery is not yet reached, and at this time, in order to increase the charging power of the battery, the battery may be heated, and the charging power of the battery is further increased by increasing the battery temperature.
In some embodiments, heating the battery in the event that the battery charge power is less than the target charge power may include:
and under the condition that the battery charging power is smaller than the target charging power, the battery is heated by the heating device with the first heating power, wherein the first heating power is the maximum heating power of the heating device, and the first heating power is smaller than the target charging power.
Specifically, the battery can be heated by the heating device, and when the power battery starts to be heated, the heating device is heated with the maximum power so as to quickly raise the temperature of the power battery, and meanwhile, the working power of the heating device is ensured not to exceed the target charging power so as to prevent the power battery from discharging.
Because the heating device can be a load arranged on the vehicle, the heating device consumes the electric energy of the battery, when the battery is charged by p1 power, the heating device heats the battery by p2 power, and the effective charging power of the battery is p1-p2 at the moment, so that the first heating power needs to be smaller than the target charging power, otherwise, the battery is in a discharging state actually, and the charging efficiency of the battery is reduced.
In the embodiment of the application, the battery is heated by arranging the heating device, and when the battery is heated, the battery can be quickly warmed up by adopting the maximum heating power of the heating device, so that the charging power of the battery is quickly raised; meanwhile, the heating power of the heating device is smaller than the maximum chargeable power (target charging power) of the battery, so that the situation that the battery is in a discharging state due to the fact that the charging power of the heating device is too large and the discharging power of the battery is larger than the charging power of the battery is avoided.
In S103, in the process of heating the battery, when the battery charging power increases to the target charging power, the heating of the battery is stopped.
Specifically, when the charging power of the battery increases to the target charging power, it is explained that the temperature of the battery has reached the temperature of the maximum chargeable power at this time. At this time, the heating of the battery may be stopped
In some embodiments, in the case where the ambient temperature is low, after the battery is heated to the maximum charging power, notification of the heating may be that the heat dissipation rate is too high, resulting in a decrease in the battery temperature during the period of time, so in S103, in order to avoid repeated heating, when the battery charging power increases to the target charging power during the heating of the battery, stopping the heating of the battery may include:
acquiring a first temperature of the battery when the charging power of the battery is increased to a target charging power in the process of heating the battery;
in the case where the battery temperature is raised from the first temperature by a preset temperature magnitude, the heating of the battery is stopped.
Specifically, after the temperature of the power battery reaches T1 (the first temperature), the battery temperature may be raised by a preset temperature range, so that the battery temperature is slowly reduced below the first temperature after the heating of the battery is stopped, and the battery is prevented from being heated again in a short time. The preset temperature range may be set according to practical situations, for example: after being added to T1+3deg.C, the battery is stopped from being heated.
In some embodiments, in the heating the battery in the above steps, when the battery charging power is not less than the target charging power, the method may further include:
the heating device heats the battery by using a second heating power, wherein the second heating power is preset heating power corresponding to a first temperature difference value, and the first temperature difference value is a difference value between the temperature of the battery and the ambient temperature.
In this embodiment of the present application, when the temperature of the power battery increases to the first temperature, the battery charging power reaches the target charging power, and at this time, only the battery temperature needs to be maintained, and the heating device is not required to be heated with high power, so that the heating power of the heating device can be determined by looking up a table (a table corresponding to the preset battery temperature and the difference between the ambient temperature and the heating power of the heating device) according to the difference between the ambient temperature and the battery temperature, so as to save energy.
Here, the preset table of the difference between the battery temperature and the ambient temperature and the heating power of the heating device can be obtained by testing the battery in advance, and as the difference between the battery temperature and the ambient temperature increases, the higher the heating power of the heating device is, that is, the higher the heating power of the heating device is, the heating power needs to be used for heating the battery to raise the battery temperature, so that the phenomenon that the higher the heating raised temperature is less than the temperature drop caused by the temperature difference, the lower the battery temperature is caused is avoided.
In some embodiments, the above charging method may further include:
in the case where the battery charge is greater than the preset charge threshold,
acquiring a second temperature of the battery;
and heating the battery until the temperature of the battery is increased to the third temperature in the case that the second temperature is less than the third temperature.
The third temperature is a battery temperature at which a battery capacity corresponding to the ambient temperature is maximum.
Specifically, the temperature of the battery affects the battery capacity, and therefore, when the battery capacity approaches a preset threshold, the battery temperature is heated to a third temperature (in which case the battery capacity is maximum), and the capacity of the battery can be fully utilized.
In the above-described charging methods S101 to S104, the battery is heated to a temperature (first temperature) at which the battery temperature reaches the maximum charging power, so that the battery charging efficiency is improved, and the first temperature is usually lower than the temperature value at which the battery capacity is maximum.
The third temperature can determine the corresponding temperature of the battery at the maximum electric quantity under the current ambient temperature by inquiring a preset corresponding table of the ambient temperature and the third temperature. The table of correspondence between the ambient temperature and the third temperature may be obtained by testing the battery in advance, which is not limited in this application.
In order to facilitate understanding of the charging method provided in the present embodiment, a description is provided herein of practical application of the above charging method, specifically referring to the following examples:
the present example proposes a charging method that increases the charging speed at the time of low-temperature ac charging, taking into account the charging characteristics of the power battery, the power of the ac charging device, and the heating control strategy of the accessory consumption power. The method comprises the following specific steps:
in step 1, during low-temperature ac charging of the electric automobile, the BMS needs to collect the transmitted charging request current I (i.e., battery charging current), the external voltage U of the power battery (i.e., battery charging voltage), the maximum allowable charging power P1 of the ac charging pile (i.e., maximum charging power of the charging pile), and the consumed work P2 of the accessories (i.e., vehicle load power, such as DCDC).
And 2, when U < (P1-P2), representing that the charging capacity of the power battery does not reach the maximum output of the pile at the moment, controlling the heating device to work for heating the power battery (namely heating the battery under the condition that the battery charging power is smaller than the target charging power, wherein the target charging power is the difference value between the maximum output power of the charging pile and the load power of the vehicle).
And 3, along with the rise of the temperature of the power battery, when U is larger and larger, and when U is larger and smaller than or equal to (P1-P2), recording the temperature of the power battery as T1 at the moment (namely, when the charging power of the battery is not smaller than the target charging power in the process of heating the battery, acquiring the first temperature of the battery at the first moment).
Step 4, in order to prevent the temperature of the power battery from decreasing after stopping heating, and thus repeatedly heating the power battery, it is necessary to stop heating the battery after the temperature of the battery is increased to t1+3℃ (i.e. in the case that the temperature of the battery is increased by a preset temperature range from the first temperature, heating the battery is stopped).
And 5, when the temperature of the power battery is reduced to U < (P1-P2), continuously starting the heating device to heat the power battery, and repeating the steps 1-4, so that the heating is repeatedly started and stopped, and the charging power of the battery is kept at the maximum charging power.
And 6, when the power battery is nearly full (for example, the SOC is 95%), heating the temperature of the power battery to a higher temperature threshold T2 (namely, obtaining a second temperature of the battery at a second moment when the battery electric quantity is larger than a preset electric quantity threshold, and heating the battery until the battery temperature is raised to a third temperature which is the battery temperature with the maximum battery capacity corresponding to the environment temperature when the second temperature is smaller than the third temperature).
The full-charged temperature of the power battery directly influences the capacity of the power battery when the power battery is fully charged, so that the endurance mileage of the power battery when the power battery is fully charged is further influenced. The capacity of the power battery is generally maximized when the power battery is fully charged at 25-45 ℃, and the temperature of the power battery is generally heated to 5-10 ℃ in the process of alternating-current charging, so that the temperature of the power battery needs to be heated to a higher temperature threshold T2 when the power battery is nearly fully charged (for example, the SOC is 95%).
Because the lower the ambient temperature, the higher the power cell temperature, the faster the power cell dissipates heat, and therefore the higher the heated temperature threshold T2 as the current ambient temperature increases.
The temperature threshold T2 is determined according to a look-up table of the current ambient temperature, as shown in table 1 below:
TABLE 1
In addition, in the heating process, in order to rapidly raise the battery temperature, the battery charging efficiency is improved, and the working power of the heating device can be controlled, and the control rule is as follows:
(1) The working power of the heating device is ensured not to exceed P1-P2 so as to prevent the discharge of the power battery.
(2) When heating the power battery, the heating device is operated at the maximum power (P1-P2 is not exceeded) so as to quickly raise the temperature of the power battery (namely, when the battery charging power is smaller than the target charging power, the battery is heated by the heating device at the first heating power, wherein the first heating power is the maximum heating power of the heating device and is smaller than the target charging power);
when the temperature of the power battery rises to be equal to or greater than (P1-P2) and meets the U.I. at this time, the charging power of the battery reaches the maximum chargeable power, so that the heating device is not required to work in a large power to maintain the battery temperature, the working power P of the heating device can be determined by looking up a table according to the difference between the ambient temperature and the battery temperature to reduce the energy consumption (namely, the heating device heats the battery by using the second heating power, the second heating power is the preset heating power corresponding to the first temperature difference, and the first temperature difference is the difference between the battery temperature and the ambient temperature).
Wherein the operating power P of the heating device increases with the difference between the battery temperature and the ambient temperature, the higher the operating power of the heating device is as shown in table 2 below.
TABLE 2
Based on the charging method provided by the embodiment, correspondingly, the application also provides a specific implementation mode of the charging device. Please refer to the following examples.
Referring first to fig. 2, a charging device 200 provided in an embodiment of the present application may include the following modules:
a first obtaining module 201, configured to obtain battery charging power, charging pile maximum output power, and vehicle load power;
a heating module 202, configured to heat the battery when the battery charging power is less than a target charging power, where the target charging power is a difference between a maximum output power of the charging pile and a load power of the vehicle;
and the control module 203 is used for stopping heating when the battery charging power is increased to the target charging power in the process of heating the battery.
In some embodiments, to avoid repetitive heating, the control module 203 may include:
the second acquisition sub-module is used for acquiring a first temperature of the battery when the battery charging power is increased to the target charging power in the process of heating the battery;
and the control sub-module is used for stopping heating the battery under the condition that the temperature of the battery is increased by a preset temperature range from the first temperature.
In some embodiments, to quickly increase the battery temperature, the heating module 202 is specifically configured to:
and under the condition that the battery charging power is smaller than the target charging power, the battery is heated by the heating device with a first heating power, wherein the first heating power is the maximum heating power of the heating device, and the first heating power is smaller than the target charging power.
In some embodiments, to reduce energy consumption, the heating module 202 may be further configured to:
in the process of heating the battery, when the charging power of the battery is not less than the target charging power, the heating device heats the battery by using second heating power, wherein the second heating power is preset heating power corresponding to a first temperature difference value, and the first temperature difference value is a difference value between the temperature of the battery and the ambient temperature.
In some embodiments, to increase the battery capacity, the charging device 200 may further include:
the third acquisition module is used for acquiring a second temperature of the battery at a second moment under the condition that the battery electric quantity is larger than a preset electric quantity threshold value;
the heating module may be further configured to heat the battery until the temperature of the battery increases to the third temperature when the second temperature is less than the third temperature.
The third temperature is a battery temperature at which a battery capacity corresponding to the ambient temperature is maximum.
In some embodiments, the first obtaining module 201 may be further configured to calculate the battery charging power based on the battery charging current and the battery charging voltage.
In the above embodiment of the present application, first, battery charging power, maximum output power of a charging pile and vehicle load power of a battery are obtained, a target charging power of the battery is determined by a difference value between the maximum output power of the charging pile and the vehicle load power, and the battery is heated under a condition that the battery charging power is smaller than the target charging power; in the process of heating the battery, when the battery charging power increases to the target charging power, the heating of the battery is stopped. Therefore, the battery can be heated when the charging power of the battery is smaller than the target charging power, the charging power of the battery is increased along with the increase of the temperature of the battery, and when the charging power of the battery reaches the target charging power, the heating is stopped, so that the charging efficiency of the battery is fully improved, the battery is heated according to the actual charging information of the battery, and the charging efficiency of the battery is improved.
Each module/unit in the apparatus shown in fig. 2 has a function of implementing each step in fig. 1, and can achieve a corresponding technical effect, which is not described herein for brevity.
Based on the charging device provided by the above embodiment, correspondingly, the present application further provides a vehicle, which includes: the charging device is used for realizing the charging method provided by the embodiment.
Based on the charging method provided by the embodiment, correspondingly, the application also provides a specific implementation mode of the electronic equipment. Please refer to the following examples.
Fig. 3 shows a schematic hardware structure of an electronic device according to an embodiment of the present application.
The electronic device may comprise a processor 301 and a memory 302 storing computer program instructions.
In particular, the processor 301 may include a central processing unit (Central Processing Unit, CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits of embodiments of the present application.
Memory 302 may include mass storage for data or instructions. By way of example, and not limitation, memory 302 may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. In one example, memory 302 may include removable or non-removable (or fixed) media, or memory 402 may be a non-volatile solid state memory. Memory 302 may be internal or external to the integrated gateway disaster recovery device.
In one example, memory 302 may be Read Only Memory (ROM). In one example, the ROM may be mask-programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.
Memory 302 may include Read Only Memory (ROM), random Access Memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical/tangible memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software comprising computer-executable instructions and when the software is executed (e.g., by one or more processors) it is operable to perform the operations described with reference to the methods according to any of the embodiments of the disclosure.
The processor 301 reads and executes the computer program instructions stored in the memory 302 to implement the methods/steps S101 to S104 in the embodiment shown in fig. 1, and achieve the corresponding technical effects achieved by executing the methods/steps in the embodiment shown in fig. 1, which are not described herein for brevity.
In one example, the electronic device may also include a communication interface 303 and a bus 310. As shown in fig. 3, the processor 301, the memory 302, and the communication interface 303 are connected to each other by a bus 310 and perform communication with each other.
The communication interface 303 is mainly used to implement communication between each module, device, unit and/or apparatus in the embodiments of the present application.
Bus 310 includes hardware, software, or both that couple the components of the online data flow billing device to each other. By way of example, and not limitation, the buses may include an accelerated graphics port (Accelerated Graphics Port, AGP) or other graphics Bus, an enhanced industry standard architecture (Extended Industry Standard Architecture, EISA) Bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an industry standard architecture (Industry Standard Architecture, ISA) Bus, an infiniband interconnect, a Low Pin Count (LPC) Bus, a memory Bus, a micro channel architecture (MCa) Bus, a Peripheral Component Interconnect (PCI) Bus, a PCI-Express (PCI-X) Bus, a Serial Advanced Technology Attachment (SATA) Bus, a video electronics standards association local (VLB) Bus, or other suitable Bus, or a combination of two or more of the above. Bus 310 may include one or more buses, where appropriate. Although embodiments of the present application describe and illustrate a particular bus, the present application contemplates any suitable bus or interconnect.
Based on the charging device provided by the above embodiment, correspondingly, the present application further provides a vehicle, including: the charging device is used for realizing the charging method provided by the embodiment.
In addition, in combination with the charging method in the above embodiment, the embodiment of the application may be implemented by providing a computer storage medium. The computer storage medium has stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the charging methods of the above embodiments.
In summary, in the charging method, the device, the vehicle equipment and the computer storage medium according to the embodiments of the present application, firstly, the battery charging power, the maximum output power of the charging pile and the vehicle load power of the battery are obtained, the target charging power of the battery is determined through the difference between the maximum output power of the charging pile and the vehicle load power, and the battery is heated under the condition that the battery charging power is smaller than the target charging power; in the process of heating the battery, when the charging power of the battery is not smaller than the target charging power, acquiring a first temperature of the battery at a first moment; in the case where the battery temperature is raised from the first temperature by a preset temperature magnitude, the heating of the battery is stopped. Therefore, the battery can be heated when the charging power of the battery is smaller than the target charging power, the charging power of the battery is increased along with the increase of the temperature of the battery, and when the charging power of the battery reaches the target charging power, the heating is stopped, so that the charging efficiency of the battery is fully improved, the battery is heated according to the actual charging information of the battery, and the charging efficiency of the battery is improved.
It should be clear that the present application is not limited to the particular arrangements and processes described above and illustrated in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps, after appreciating the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be different from the order in the embodiments, or several steps may be performed simultaneously.
Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, which are intended to be included in the scope of the present application.
Claims (10)
1. A method of charging, the method comprising:
acquiring battery charging power, maximum output power of a charging pile and vehicle load power;
heating the battery under the condition that the battery charging power is smaller than a target charging power, wherein the target charging power is the difference value between the maximum output power of the charging pile and the vehicle load power;
and stopping heating the battery when the battery charging power is increased to the target charging power in the process of heating the battery.
2. The method of claim 1, wherein the stopping the heating of the battery when the battery charging power increases to the target charging power during the heating of the battery comprises:
acquiring a first temperature of the battery when the battery charging power is increased to the target charging power in the process of heating the battery;
and stopping heating the battery when the temperature of the battery is increased by a preset temperature range from the first temperature.
3. The method of claim 1, wherein heating the battery if the battery charge power is less than a target charge power comprises:
and under the condition that the battery charging power is smaller than the target charging power, heating the battery by a heating device with a first heating power, wherein the first heating power is the maximum heating power of the heating device, and the first heating power is smaller than the target charging power.
4. A method according to any one of claims 1 to 3, wherein said increasing the battery charging power to the target charging power during heating of the battery further comprises:
the heating device heats the battery by using second heating power, wherein the second heating power is preset heating power corresponding to a first temperature difference value, and the first temperature difference value is a difference value between the battery temperature and the ambient temperature.
5. The method according to claim 4, wherein the method further comprises:
in case the battery charge is greater than a preset charge threshold,
acquiring a second temperature of the battery;
and heating the battery until the battery temperature is increased to the third temperature when the second temperature is smaller than the third temperature, wherein the third temperature is the battery temperature with the maximum battery capacity corresponding to the ambient temperature.
6. A charging device, the device comprising:
the first acquisition module is used for acquiring battery charging power, maximum output power of the charging pile and vehicle load power;
the heating module is used for heating the battery under the condition that the battery charging power is smaller than a target charging power, and the target charging power is the difference value between the maximum output power of the charging pile and the vehicle load power;
and the control module is used for stopping heating the battery when the battery charging power is increased to the target charging power in the process of heating the battery.
7. A charging apparatus, the apparatus comprising: a processor and a memory storing program instructions;
the processor, when executing the program instructions, implements the method of any one of claims 1-5.
8. A storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any of claims 1-5.
9. A computer program product, characterized in that it comprises computer program instructions which, when executed by a processor, implement the method of any one of claims 1-5.
10. A vehicle, characterized in that the vehicle comprises:
the charging device according to claim 6 or the charging apparatus according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210782789.5A CN117382470A (en) | 2022-07-05 | 2022-07-05 | Charging method, device, apparatus, medium, program product, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210782789.5A CN117382470A (en) | 2022-07-05 | 2022-07-05 | Charging method, device, apparatus, medium, program product, and vehicle |
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| CN117382470A true CN117382470A (en) | 2024-01-12 |
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| CN202210782789.5A Pending CN117382470A (en) | 2022-07-05 | 2022-07-05 | Charging method, device, apparatus, medium, program product, and vehicle |
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| CN (1) | CN117382470A (en) |
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