CN117284159A - Battery charging and heating control method, system, terminal equipment and storage medium - Google Patents

Battery charging and heating control method, system, terminal equipment and storage medium Download PDF

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Publication number
CN117284159A
CN117284159A CN202311520650.4A CN202311520650A CN117284159A CN 117284159 A CN117284159 A CN 117284159A CN 202311520650 A CN202311520650 A CN 202311520650A CN 117284159 A CN117284159 A CN 117284159A
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CN
China
Prior art keywords
battery
temperature
charging
heating power
temperature threshold
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Pending
Application number
CN202311520650.4A
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Chinese (zh)
Inventor
李军
蔡永明
王德滨
王宁
刘迷
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Chongqing Seres New Energy Automobile Design Institute Co Ltd
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Chongqing Seres New Energy Automobile Design Institute Co Ltd
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Application filed by Chongqing Seres New Energy Automobile Design Institute Co Ltd filed Critical Chongqing Seres New Energy Automobile Design Institute Co Ltd
Priority to CN202311520650.4A priority Critical patent/CN117284159A/en
Publication of CN117284159A publication Critical patent/CN117284159A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • 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
    • 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
    • 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
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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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 invention provides a battery charging and heating control method, a system, terminal equipment and a storage medium, wherein the method comprises the following steps of; when a charging connection signal is received, acquiring the temperature before charging of the battery; when the temperature before charging is judged to be smaller than or equal to a first temperature threshold value, a first environment temperature value and the rated capacity of the battery pack are obtained; determining a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and controlling an external power supply to heat the battery at the first preset heating power; according to the battery pack and the battery pack charging method, when the battery needs to be heated in the vehicle charging process, the battery is heated according to the acquired environmental temperature value and the rated capacity of the battery pack, and therefore the service life of the battery is prolonged.

Description

Battery charging and heating control method, system, terminal equipment and storage medium
Technical Field
The application relates to the technical field of battery heating, in particular to a battery charging and heating control method, a system, terminal equipment and a storage medium.
Background
Pure electric vehicles are favored by more and more users because of better dynamic performance, drivability, NVH (Noise, vibration and Harshness) performance and lower use cost.
However, the problem that the battery pack still has high energy consumption and short endurance mileage under the low-temperature environment exists in the pure electric vehicle, for example, patent publication No. CN202110454149.7 discloses a battery charging method, device, terminal and computer readable storage medium, in which the battery is heated according to the temperature, the ambient temperature and the current electric quantity of the battery, the rated capacity of the battery pack is not considered in the process of heating the battery, in this case, the battery is heated, the battery pack is caused to operate under lower capacity, so that the service life of the battery pack is reduced, the rated capacity of the battery pack determines the charging speed, if the battery pack is heated without considering the rated capacity of the battery pack, the charging speed is reduced, so that the charging efficiency is also reduced, and further the endurance mileage of the vehicle is affected.
Disclosure of Invention
An object of the present application is to provide a battery charging and heating control method, system, terminal device and storage medium, aiming at the above problems.
In a first aspect, the present application provides a battery charging heating control method, the method including:
when a charging connection signal is received, acquiring the temperature before charging of the battery;
when the temperature before charging is judged to be smaller than or equal to a first temperature threshold value, a first environment temperature value and the rated capacity of the battery pack are obtained;
and determining a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and controlling an external power supply to heat the battery with the first preset heating power.
According to the technical scheme provided by the embodiment of the application, determining the first preset heating power according to the first ambient temperature value and the rated capacity of the battery pack includes:
traversing a heating power meter to obtain the first preset heating power corresponding to the first environment temperature value and the rated capacity of the battery pack; the heating power meter includes: the battery pack comprises a plurality of groups of environment temperature value intervals, battery pack rated capacity intervals and first preset heating power corresponding to each environment temperature value interval and each battery pack rated capacity interval.
According to the technical scheme provided by the embodiment of the application, after the battery is heated by the first preset heating power, the method further comprises the following steps:
acquiring a first real-time temperature of a battery in real time;
and stopping heating the battery and starting charging the battery when the first real-time temperature is judged to be greater than a second temperature threshold, wherein the second temperature threshold is greater than the first temperature threshold.
According to the technical scheme provided by the embodiment of the application, when the first real-time temperature is determined to be greater than the second temperature threshold, the battery heating is stopped, and after the battery charging is started, the method further comprises the following steps:
when the current battery electric quantity is judged to reach the first electric quantity, acquiring a second temperature of the battery;
when the second temperature is judged to be smaller than or equal to a third temperature threshold value, a second environment temperature value is obtained; the third temperature threshold is greater than the second temperature threshold;
and traversing the heating power meter according to the second environment temperature value and the rated capacity of the battery pack to obtain second preset heating power, and heating the battery by the second preset heating power.
According to the technical scheme provided by the embodiment of the application, after receiving the charging connection signal, and before judging that the temperature before charging is less than or equal to the first temperature threshold value, the method further comprises:
obtaining a charging mode of the battery according to the charging connection signal; the charging modes comprise a direct current charging mode and an alternating current charging mode;
and determining the first temperature threshold according to the charging mode.
According to the technical scheme provided by the embodiment of the application, after the step of acquiring the first real-time temperature of the battery in real time, before the step of judging that the first real-time temperature is greater than the second temperature threshold value, the method comprises the following steps:
obtaining a charging mode of the battery according to the charging connection signal; the charging modes comprise a direct current charging mode and an alternating current charging mode;
and determining the second temperature threshold according to the charging mode.
According to the technical scheme provided by the embodiment of the application, the first temperature threshold corresponding to the direct current charging mode is larger than the first temperature threshold corresponding to the alternating current charging mode.
In a second aspect, the present application provides a battery charge heating control system comprising:
the first acquisition module is configured to acquire the temperature before charging of the battery when receiving the charging connection signal;
the second acquisition module is configured to acquire a first environment temperature value and rated capacity of the battery pack when the temperature before charging is less than or equal to a first temperature threshold;
and the first determining module is configured to determine a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and control an external power supply to heat the battery at the first preset heating power.
In a third aspect, the present application provides a terminal device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor;
the computer program when executed by the processor implements the steps of the battery charge heating control method as set forth in any one of the above.
In a fourth aspect, the present application provides a computer-readable storage medium having stored thereon a battery charge heating control program which, when executed by a processor, implements the steps of the battery charge heating control method as set forth in any one of the preceding claims.
Compared with the prior art, the beneficial effect of this application: the method comprises the steps that a charging connection signal is received, the temperature of a battery before charging is obtained, when the temperature of the battery before charging is judged to be smaller than or equal to a first temperature threshold value, a first environment temperature value and the rated capacity of a battery pack are obtained, first preset heating power is obtained, and the battery is heated by the first preset heating power; in the use process, after receiving a charging connection signal, acquiring the temperature of the battery before charging and judging, when judging that the temperature of the battery before charging is less than or equal to a first temperature threshold value, characterizing that the battery needs to be heated, then acquiring a first environment temperature value and the rated capacity of a battery pack, determining a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and controlling an external power supply to heat the battery with the first preset heating power;
this application is through in the vehicle charging process, receive the charge connection signal, and acquire the temperature before the battery charges, when judging that the temperature before the battery charges is less than or equal to first temperature threshold value, the characterization needs to heat the battery, then need acquire first ambient temperature numerical value and battery package rated capacity, and according to the first ambient temperature numerical value that acquires and the capacity of battery package, confirm the first heating power of predetermineeing that heats the battery, and control external power source heats the battery with first heating power of predetermineeing, this application takes into account this factor of the rated capacity of battery package, first aspect: the battery pack can be operated at rated capacity when being heated, so that the service life of the battery pack can be prolonged; second aspect: under the condition of considering the rated capacity of the battery pack, the battery pack is heated, so that the charging speed of the battery pack is not influenced, the charging speed of the battery can be improved, and further the endurance mileage of the vehicle can be improved; third aspect: the battery is heated under the condition of considering the rated capacity of the battery pack, so that the battery pack can be prevented from being overheated, and the service life and the safety of the battery pack are prolonged; meanwhile, under the condition that the rated capacity of the battery pack is considered, different heating powers can be formulated for the battery heating process according to the condition that multiple factors are comprehensively considered, particularly, different heating powers are set according to the difference of the rated capacity of the battery pack and the environmental temperature value, the corresponding heating powers can be ensured under the condition that the battery is different in environmental temperature and the rated capacity of the battery pack, and in addition, when the battery is heated, an external power supply is used, such as the electric quantity of a charging pile, the electric quantity of the battery can not be consumed, the service life of the battery can be prevented from being reduced, and the endurance mileage of the battery can be indirectly increased.
Drawings
Fig. 1 is a flowchart of a battery charging and heating control method according to an embodiment of the present application;
fig. 2 is a diagram of a battery charging and heating control system according to a second embodiment of the present application;
fig. 3 is a schematic structural diagram of a server provided in a fifth embodiment of the present application.
The text labels in the figures are expressed as: 1. a first acquisition module; 2. a second acquisition module; 3. a first determination module; 400. a server; 401. a Central Processing Unit (CPU); 402. read Only Memory (ROM); 403. random Access Memory (RAM); 404. a bus; 405. an input/output (I/O) interface; 406. an input section; 407. an output section; 408. a storage section; 409. a communication section; 410. a driver; 411. removable media.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present application, the following detailed description of the present application is provided by way of example and illustration only, and should not be construed to limit the scope of the present application in any way.
For clarity and conciseness in the description of the following embodiments, a brief description of the related art will be given first:
VCU is Vehicle Control Unit, vehicle control unit;
A+/CC2 is a signal of an alternating current charging gun and is used for communicating with a vehicle, and when the signal A+/CC2 is at a high level, the signal A+/CC2 indicates that the vehicle needs to be subjected to alternating current charging;
CC/CP is the signal of the direct current charging gun, is also used for communicating with the vehicle, when CC/CP signal is high level, it is indicated that the vehicle needs to charge directly;
PTC thermal management system: PTC (Positive Temperature Coefficient) the thermal management system is a thermal management system in the interior of an automobile for controlling the temperature of the battery to ensure safe and efficient operation of the battery when charged.
The VCU of the vehicle detects the level states of the signals A+/CC2 and CC/CP and sends the detected level states to the charging equipment, and the charging equipment can judge the charging mode of the vehicle after receiving the level states, so that corresponding charging service is provided.
Example 1
The embodiment of the application provides a battery charging and heating control method, which is shown in fig. 1, and specific values related to the following embodiments are for illustration only and not for any specific limitation:
s1, acquiring the temperature before charging of a battery when receiving a charging connection signal;
s2, when the temperature before charging is less than or equal to a first temperature threshold value, a first environment temperature value and the rated capacity of the battery pack are obtained;
and S3, determining a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and controlling an external power supply to heat the battery with the first preset heating power.
Specifically, in this embodiment, after the vehicle is connected to the charging gun, when a charging connection signal is received, the pre-charging temperature of the battery is obtained, and when it is determined that the pre-charging temperature of the battery is less than or equal to a first temperature threshold, a first environmental temperature value and a rated capacity of the battery pack are obtained; and then determining a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and simultaneously controlling an external power supply, namely the charging pile to heat the battery at the first preset heating power.
Further, the determining the first preset heating power according to the first ambient temperature value and the rated capacity of the battery pack includes:
traversing a heating power meter to obtain the first preset heating power corresponding to the first environment temperature value and the rated capacity of the battery pack; the heating power meter includes: the battery pack comprises a plurality of groups of environment temperature value intervals, battery pack rated capacity intervals and first preset heating power corresponding to each environment temperature value interval and each battery pack rated capacity interval.
Specifically, in this embodiment, the determining the first preset heating power according to the first ambient temperature value and the rated capacity of the battery pack includes:
traversing a heating power meter, finding the first preset heating power corresponding to the first environment temperature value and the rated capacity of the battery pack in the heating power meter, and storing the average environment temperature of the current day into an environment temperature database before each power-down of the vehicle, wherein the environment temperature database is shown in table 1:
table 1: ambient temperature database
Time Average ambient temperature
Day 4 month 19 -5
4 months and 18 days -8
Day 4 month 17 -10
4 months and 16 days -15
4 months 15 days -12
...... ......
In this embodiment, an average environmental temperature of the last five days is obtained, and then according to the contents in table 1, a first environmental temperature value is solved, where the first environmental temperature value= (-5-8-10-15-12)/5= -10 degrees celsius, that is, an average value of all environmental temperatures of five balances, and then a rated capacity of a battery pack is obtained, and assuming that the rated capacity of the currently charged battery pack is 45kWh, after obtaining the first environmental temperature value and the rated capacity of the battery pack, a heating power table needs to be traversed, where the heating power table is as shown in the following table 2:
table 2: heating power meter (kW)
The heating power meter comprises a plurality of groups of the environment temperature intervals, the battery pack rated capacity intervals and first preset heating power corresponding to the environment temperature intervals and the battery pack rated capacity intervals; that is, different first ambient temperatures and different rated capacities of the battery pack respectively correspond to different first preset heating powers, according to the first ambient temperature values (-10 ℃) and the rated capacities of the battery pack (45 kWh), in the heating power meter, the corresponding first heating power is found to be 1.7kW, then the battery is heated by the first preset heating power to be 1.7kW, the first preset power can be different due to the difference between the rated capacities of the battery pack and the first ambient temperatures, so that different heating powers can be corresponding to different rated capacities of the battery pack and different ambient temperature values, the service life of the battery can be prevented from being damaged because the heating power is too large or too small, and when the battery is heated, the electric source uses the electric quantity of an external charging pile instead of the electric quantity of the battery, and the service life of the battery can also be prevented from being damaged because the electric quantity of the battery is consumed.
Further, after the battery is heated with the first preset heating power, the method further comprises:
acquiring a first real-time temperature of a battery in real time;
and stopping heating the battery and starting charging the battery when the first real-time temperature is judged to be greater than a second temperature threshold, wherein the second temperature threshold is greater than the first temperature threshold.
Specifically, in this embodiment, after the battery is heated with the first heating power, the method further includes: and acquiring the first real-time temperature of the battery in real time, judging that when the first real-time temperature is larger than a second temperature threshold value, heating the battery, and starting to charge the battery, wherein the second temperature threshold value is larger than the first temperature threshold value.
Further, when the first real-time temperature is determined to be greater than the second temperature threshold, stopping heating the battery, and starting to charge the battery, the method further comprises:
when the current battery electric quantity is judged to reach the first electric quantity, acquiring a first temperature of the battery;
when the first temperature is judged to be smaller than or equal to a third temperature threshold value, a second environment temperature value is obtained; the third temperature threshold is greater than the second temperature threshold;
and traversing the heating power meter according to the second environment temperature value and the rated capacity of the battery pack to obtain second preset heating power, and heating the battery by the second preset heating power.
Specifically, in this embodiment, after starting to charge the battery, the method further includes:
when the current battery power reaches the first power, in this embodiment, when the battery power is 100%, obtaining the first temperature of the battery, when the first temperature is determined to be less than or equal to a third temperature threshold, then obtaining the second environmental temperature value, wherein the obtaining and calculating method of the second environmental temperature value are consistent with the calculating method of the first environmental temperature value, traversing the heating power meter, finding a second preset heating power corresponding to the second environmental temperature value in the heating power meter, and controlling the PTC thermal management system to heat the battery with the second preset heating power through an external charging pile, and in the process of heating the battery, obtaining the temperature of the battery in real time until the temperature of the battery is determined to be greater than the third temperature threshold, and in this embodiment, stopping heating the battery, wherein the third temperature threshold is consistent with the alternating current charging mode in the direct current charging mode and is 25 ℃.
Further, after receiving the charging connection signal, and before judging that the temperature before charging is less than or equal to the first temperature threshold value, the method further comprises:
obtaining a charging mode of the battery according to the charging connection signal; the charging modes comprise a direct current charging mode and an alternating current charging mode;
and determining the first temperature threshold according to the charging mode.
Further, the first temperature threshold corresponding to the dc charging mode is greater than the first temperature threshold corresponding to the ac charging mode.
Specifically, in this embodiment, after the vehicle is connected to the charging gun, when the VCU of the vehicle receives the charging connection signal, the charging mode of the battery is determined according to the received charging connection signal, where the charging mode includes a direct current charging mode and an alternating current charging mode, the charging connection signal includes an a+/CC2 signal and a CC/CP signal, and when the VCU of the vehicle detects the a+/CC2 signal, it indicates that the charging mode of the vehicle is the alternating current charging mode; when the VCU of the vehicle detects the CC/CP signal, the charging mode of the vehicle is indicated to be a direct current charging mode, and the magnitude of a real-time first temperature threshold value is determined according to different charging modes, wherein the first temperature threshold value in the direct current charging mode is larger than the first temperature threshold value in the alternating current charging mode, on one hand, because the first temperature threshold value is smaller than the first temperature threshold value in the alternating current charging mode in the direct current charging mode, the chemical reaction in the battery can be more stable, the phenomenon of heat accumulation and overheat in the battery can be reduced, and the service life of the battery can be prolonged; on the other hand, because the temperature rise rate of the battery in the direct current charging mode is faster than that in the alternating current charging mode, heating the battery at a higher first temperature threshold value accelerates the aging speed of the battery; secondly, in the direct current charging mode, the chemical reaction in the battery is accelerated due to the temperature rise of the battery, the electrochemical performance of the battery is changed, the service life and the safety of the battery are affected, in contrast, in the alternating current charging mode, the chemical reaction in the battery is not accelerated along with the temperature rise, and the electrochemical performance of the battery is not affected; in this embodiment, the first temperature threshold in the dc mode is 5 degrees celsius, and the first temperature threshold in the ac mode is-5 degrees celsius.
When the first temperature threshold is well determined and the VCU of the vehicle has acquired the temperature before the battery is charged, then in the direct current charging mode, when the VCU of the vehicle determines that the battery temperature is less than or equal to the first temperature threshold (5 degrees celsius), traversing table 1 to acquire a first environmental temperature value, and traversing table 2 to acquire the first preset heating power according to the first environmental temperature value and the rated capacity of the battery pack; in the alternating-current charging mode, when the vehicle VCU judges that the battery temperature is smaller than or equal to a first temperature threshold (-5 ℃), traversing table 1 to obtain a first environment temperature value, and traversing table 2 to obtain the first preset heating power according to the first environment temperature value and the rated capacity of the battery pack; in this embodiment, the direct current charging mode is consistent with the first ambient temperature value of the alternating current charging mode, the first ambient temperature value is 10 degrees celsius, and after the first preset heating power is determined, the PTC thermal management system inside the vehicle is controlled to obtain the electric quantity in the external charging pile, and meanwhile, the battery is heated with the first preset heating power.
Further, after the step of acquiring the first real-time temperature of the battery in real time, before the step of judging that the first real-time temperature is greater than the second temperature threshold value, the method includes:
obtaining a charging mode of the battery according to the charging connection signal; the charging modes comprise a direct current charging mode and an alternating current charging mode;
and determining the second temperature threshold according to the charging mode.
Specifically, in this embodiment, the magnitude of the second temperature threshold needs to be determined according to the charging mode, in this embodiment, the second temperature threshold in the dc charging mode is 10 degrees celsius, and the second temperature threshold in the ac charging mode is 0 degrees celsius, and since the temperature rise rate of the battery in the dc charging mode is smaller than the temperature rise rate of the battery in the ac mode, the second temperature threshold in the dc charging mode is greater than the second temperature threshold in the ac charging mode;
in the process of charging the battery, if the battery is in a direct current charging mode, when the first real-time temperature of the battery is judged to be higher than 10 ℃, the battery is stopped to be heated, because the temperature rise rate of the battery is smaller in the process of charging the battery, and the battery can generate certain heat, in the process of charging the battery, the battery can convert electric energy into chemical energy to be stored, so that the temperature of the battery can be raised, that is, when the first real-time temperature of the battery is judged to be higher than 10 ℃, the battery is stopped to be heated, then the battery is charged, the temperature of the battery is gradually increased in the process of charging the battery, and the temperature of the battery can be higher than a second temperature threshold after the electric quantity of the battery is full;
if the battery is in the ac charging mode, when the first real-time temperature of the battery is determined to be greater than 0 ℃, the battery is stopped to be heated, because in the process of ac charging, the battery can generate certain heat, in the process of charging the battery, the temperature rising rate of the battery is greater than the temperature rising rate of the battery in the dc charging mode, and the battery can convert electric energy into chemical energy to be stored, so that the temperature of the battery can be raised, that is, when the first real-time temperature of the battery is determined to be greater than 0 ℃, the battery is stopped to be heated, then the battery is charged, the temperature of the battery can be gradually increased in the process of charging the battery, and after the electric quantity of the battery is full, the temperature of the battery can be higher than a second temperature threshold.
In this embodiment, when it is determined that the battery needs to be heated, the battery is heated with specific power by consuming an external power source (the power source of the charging pile), instead of heating the battery by consuming the electric quantity inside the battery, and after the battery is charged, the temperature of the battery is reversely determined, and when the temperature of the battery does not reach the third temperature threshold value, the battery is still heated by using the electric quantity of the charging pile, and the service life of the battery can be prolonged by using the external power source and the specific heating power, so that indirectly, the reduction of the endurance mileage of the battery and the reduction of the whole vehicle energy consumption can be avoided.
Example two
The application provides a battery charge heating control system, as shown in fig. 2, comprising:
the first acquisition module is configured to acquire the temperature before charging of the battery when receiving the charging connection signal;
the second acquisition module is configured to acquire a first environment temperature value and rated capacity of the battery pack when the temperature before charging is less than or equal to a first temperature threshold;
and the first determining module is configured to determine a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and control an external power supply to heat the battery at the first preset heating power.
Specifically, in this embodiment, as shown in fig. 2, the battery charging heating control system includes a first acquisition module 1, where the first acquisition module 1 is configured to acquire a pre-charging temperature of the battery when receiving a charging connection signal; the first acquisition module 1 is connected with a second acquisition module 2, and the second acquisition module is configured to acquire a first environmental temperature value and rated capacity of the battery pack when the temperature before charging is judged to be less than or equal to a first temperature threshold value; the second obtaining module 2 is connected with a first determining module 3, and the first determining module 3 is configured to determine a first preset heating power according to the first environmental temperature value and the rated capacity of the battery pack, and control an external power supply to heat the battery with the first preset heating power.
Example III
The present embodiment provides a battery charge heating control device including:
a memory, a processor, and a computer program stored on the memory and executable on the processor;
the computer program when executed by the processor implements the steps of the battery charge heating control method as in fig. 1.
Example IV
The present embodiment provides a computer-readable storage medium having stored thereon a battery charge heating control program which, when executed by a processor, implements the steps of the battery charge heating control method as in fig. 1.
Example five
The present embodiment provides a server 400, as shown in fig. 3, the server 400 including a Central Processing Unit (CPU) 401, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 402 or a program loaded from a storage section into a Random Access Memory (RAM) 403. In the RAM403, various programs and data required for the system operation are also stored. The CPU401, ROM402, and RAM403 are connected to each other by a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
The following components are connected to the I/O interface 405: an input section 406 including a keyboard, a mouse, and the like; an output portion 407 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker, and the like; a storage section 408 including a hard disk or the like; and a communication section 409 including a network interface card such as a LAN card, a modem, or the like. The communication section 409 performs communication processing via a network such as the internet. The drives are also connected to the I/O interface 405 as needed. A removable medium 411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed on the drive 410 as needed, so that a computer program read therefrom is installed into the storage section 408 as needed.
In particular, the process described above with reference to fig. 1 may be implemented as a computer software program according to an embodiment of the invention. For example, embodiments of the present invention include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the methods shown in fig. 1 and 2. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 409 and/or installed from the removable medium 411.
The computer readable medium shown in the present invention may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted 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-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases. The described units or modules may also be provided in a processor, for example, as: the processor comprises a first generation module, an acquisition module, a search module, a second generation module and a combination module. The names of these units or modules do not in any way limit the units or modules themselves, and the acquisition module may also be described as "an acquisition module for acquiring a plurality of instances to be probed in the base table", for example.
As another aspect, the present application also provides a computer-readable medium, which may be contained in the server described in the above embodiment; or may exist alone without being incorporated into the electronic device. The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to implement the smart device rental method as described in the above embodiments. For example, the electronic device may implement the various steps as shown in fig. 1.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, due to the limited nature of text, there is an objectively infinite number of specific structures, and that, to those skilled in the art, several improvements, modifications or changes can be made, and the above technical features can be combined in a suitable manner, without departing from the principles of the present invention; such modifications, variations and combinations, or the direct application of the concepts and aspects of the invention in other applications without modification, are intended to be within the scope of this application.

Claims (10)

1. A battery charge heating control method, characterized by comprising the steps of:
when a charging connection signal is received, acquiring the temperature before charging of the battery;
when the temperature before charging is judged to be smaller than or equal to a first temperature threshold value, a first environment temperature value and the rated capacity of the battery pack are obtained;
and determining a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and controlling an external power supply to heat the battery with the first preset heating power.
2. The battery charge-and-heat control method according to claim 1, wherein determining a first preset heating power according to the first ambient temperature value and the battery pack rated capacity comprises:
traversing a heating power meter to obtain the first preset heating power corresponding to the first environment temperature value and the rated capacity of the battery pack; the heating power meter includes: the battery pack comprises a plurality of groups of environment temperature value intervals, battery pack rated capacity intervals and first preset heating power corresponding to each environment temperature value interval and each battery pack rated capacity interval.
3. The battery charge heating control method according to claim 2, characterized by further comprising, after heating the battery at the first preset heating power:
acquiring a first real-time temperature of a battery in real time;
and stopping heating the battery and starting charging the battery when the first real-time temperature is judged to be greater than a second temperature threshold, wherein the second temperature threshold is greater than the first temperature threshold.
4. The battery charge-and-heat control method according to claim 3, wherein when the first real-time temperature is determined to be greater than a second temperature threshold, stopping heating the battery and starting charging the battery further comprises:
when the current battery electric quantity is judged to reach the first electric quantity, acquiring a second temperature of the battery;
when the second temperature is judged to be smaller than or equal to a third temperature threshold value, a second environment temperature value is obtained; the third temperature threshold is greater than the second temperature threshold;
and traversing the heating power meter according to the second environment temperature value and the rated capacity of the battery pack to obtain second preset heating power, and heating the battery by the second preset heating power.
5. The battery charge-and-heat control method according to claim 4, further comprising, after receiving a charge connection signal and before determining that the pre-charge temperature is less than or equal to a first temperature threshold:
obtaining a charging mode of the battery according to the charging connection signal; the charging modes comprise a direct current charging mode and an alternating current charging mode;
and determining the first temperature threshold according to the charging mode.
6. The battery charge and heat control method according to claim 3, wherein after the step of acquiring the first real-time temperature of the battery in real time, the step of determining that the first real-time temperature is greater than the second temperature threshold value includes:
obtaining a charging mode of the battery according to the charging connection signal; the charging modes comprise a direct current charging mode and an alternating current charging mode;
and determining the second temperature threshold according to the charging mode.
7. The battery charge heating control method according to claim 5, wherein the first temperature threshold value corresponding to the dc charging mode is greater than the first temperature threshold value corresponding to the ac charging mode.
8. A battery charge heating control system, comprising:
the first acquisition module is configured to acquire the temperature before charging of the battery when receiving the charging connection signal;
the second acquisition module is configured to acquire a first environment temperature value and rated capacity of the battery pack when the temperature before charging is less than or equal to a first temperature threshold;
and the first determining module is configured to determine a first preset heating power according to the first environment temperature value and the rated capacity of the battery pack, and control an external power supply to heat the battery at the first preset heating power.
9. A terminal device, characterized in that the terminal device comprises: a memory, a processor, and a computer program stored on the memory and executable on the processor;
the computer program when executed by the processor implements the steps of the battery charge heating control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a battery charge heating control program which, when executed by a processor, implements the steps of the battery charge heating control method according to any one of claims 1 to 7.
CN202311520650.4A 2023-11-13 2023-11-13 Battery charging and heating control method, system, terminal equipment and storage medium Pending CN117284159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311520650.4A CN117284159A (en) 2023-11-13 2023-11-13 Battery charging and heating control method, system, terminal equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311520650.4A CN117284159A (en) 2023-11-13 2023-11-13 Battery charging and heating control method, system, terminal equipment and storage medium

Publications (1)

Publication Number Publication Date
CN117284159A true CN117284159A (en) 2023-12-26

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Country Status (1)

Country Link
CN (1) CN117284159A (en)

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