CN113809798A - Charging method and system based on electric vehicle battery, storage medium and battery replacement cabinet - Google Patents

Charging method and system based on electric vehicle battery, storage medium and battery replacement cabinet Download PDF

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Publication number
CN113809798A
CN113809798A CN202111061619.XA CN202111061619A CN113809798A CN 113809798 A CN113809798 A CN 113809798A CN 202111061619 A CN202111061619 A CN 202111061619A CN 113809798 A CN113809798 A CN 113809798A
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China
Prior art keywords
battery
charging
value
electric vehicle
information
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CN202111061619.XA
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Chinese (zh)
Inventor
葛福胜
李�杰
匡旭
费剑伟
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Shenzhen Yidian New Power Co ltd
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Shenzhen Yidian New Power Co ltd
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Priority to CN202111061619.XA priority Critical patent/CN113809798A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • 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
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H02J7/007186—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage obtained with the battery disconnected from the charge or discharge circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/46—Vehicles with auxiliary ad-on propulsions, e.g. add-on electric motor kits for bicycles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a charging method and system based on an electric vehicle battery, a storage medium and a power exchange cabinet. The method comprises the following steps: s1, collecting battery information of the battery; s2, charging the battery according to the battery information, and recording the charging information; and S3, calculating the battery charging condition according to the charging information, and judging whether the battery is charged. By collecting the battery information and controlling the charging current according to the battery information, the service life of the battery of the electric vehicle is prolonged.

Description

Charging method and system based on electric vehicle battery, storage medium and battery replacement cabinet
Technical Field
The invention relates to the field of electric vehicles, in particular to a charging method, a charging system, a storage medium and a power change cabinet based on an electric vehicle battery.
Background
Under the big background of global energy crisis and serious environmental crisis, in order to alleviate increasingly serious energy crisis and environmental pollution, the electric vehicle industry develops towards the direction of cleanness, environmental protection, energy saving, and the electric vehicle as a green travel tool with wide development prospect and a transportation tool for riders in the instant delivery industry has extremely rapid popularization speed in the future and extremely huge market prospect in the future.
According to statistics, the daily riding requirement of the domestic two-wheel vehicle is close to 10 hundred million times, the charging frequency of the electric vehicle is 1 hundred million times daily, and the number of times reaches 365 hundred million times every year. The market for domestic electric vehicles holds over 2 million vehicles and presents an increasing situation of over 3000 million vehicles per year. More than 300 electric vehicle battery changing enterprises exist in China, and more than 30 electric vehicle battery changing enterprises with relatively large scale exist.
Along with the continuous increase of different crowds to the electric motor car demand, what bring by the way is fatal problems such as the short life of battery, short continuation of the journey, the outage of riding, battery spontaneous combustion, and these fatal problems not only influence the experience of riding, also bring the personal safety problem simultaneously. However, the problems are attributed to the fact that the single battery cell of the battery is damaged, the voltage difference of the battery cell is large, the charging curve is unreasonable, and the battery thermal failure causes that the balancing strategy and the protection strategy which are purely based on the battery BMS protection board cannot be solved.
Disclosure of Invention
Aiming at the problems that the balancing strategy and the protection strategy which are only based on a battery BMS protection board cannot be solved due to damage of a single battery cell, large battery cell pressure difference, unreasonable charging curve and thermal failure of the battery in the prior art, the invention provides a charging method, a charging system, a storage medium and a power change cabinet based on an electric vehicle battery.
In order to achieve the purpose, the technical scheme adopted by the invention is a charging method based on an electric vehicle battery, and the method comprises the following steps:
s1, collecting battery information of the battery;
s2, charging the battery according to the battery information, and recording the charging information;
and S3, calculating the battery charging condition according to the charging information, and judging whether the battery is charged.
Further, the battery information includes a battery SOC value, a battery SOH value, a cell temperature value, a cell differential pressure value, a single cell voltage value, and a battery charging current.
Further, the step S2 specifically includes:
s21, setting the cell temperature value to be less than or equal to 10 ℃ or 50 ℃ to be less than or equal to 55 ℃ or the battery SOC value to be less than or equal to 5%, and setting the battery charging current to be 2A;
s22, setting the battery core temperature value between 40 ℃ and 40 ℃ to be less than 50 ℃, or setting the battery SOC value between 5% and 80%, or keeping the battery SOC value to be less than 10%, wherein if the battery SOH value is less than or equal to 80%, the battery charging current is 2A, and if the battery SOH value is more than 80%, the battery charging current is 4A;
s23, setting the battery core temperature value between 10 ℃ and 40 ℃ or setting the battery SOC value between 10% and 80%, if the battery SOH value is 80%, then the battery charging current is 4A, if the battery SOH value is 80%, then the battery charging current is 8A;
and S24, stopping charging when the temperature value of the battery core is larger than or equal to 55 ℃, checking the temperature value of the battery core, and if the temperature value of the battery core is reduced to 50 ℃, determining the charging current of the battery to be 2A.
Further, the step S3 specifically includes:
s31, calculating battery classification information according to the charging information;
and S32, judging whether the battery is charged according to the battery classification information.
Further, the step S31 specifically includes:
s311, if the SOC value of the battery is more than 80%, the voltage value of a single cell is more than 3.4V, and the voltage difference value of the cell is more than or equal to 100mV, the rechargeable battery is a lithium iron phosphate battery;
and S312, if the SOC value of the battery is more than 80%, the voltage value of a single cell is more than 3.8V, and the cell voltage difference value is more than or equal to 60mV, the rechargeable battery is a ternary lithium battery.
Further, the step S32 specifically includes:
s321, under the full-charge condition of the lithium iron phosphate battery, if the SOC value of the battery is larger than 96%, detecting a cell voltage difference value, wherein the cell voltage difference value is larger than 100mV, and the battery is in a full-charge state and stops charging; if the SOC value of the battery is 100%, the battery is in a full-charge state, and the charging is stopped;
s322, under the full-charge condition of the ternary lithium battery, if the SOC value of the battery is larger than 96%, the cell differential pressure value is detected, and the cell differential pressure value is larger than 60mV, the battery is in a full-charge state, and the charging is stopped; if the SOC value of the battery is 100%, the battery is fully charged and charging is stopped.
Further, in the step S24, the cell temperature value is checked every other minute.
In addition, to achieve the above object, the present invention also provides a charging system based on a battery of an electric vehicle, the system including:
the battery acquisition module is used for acquiring battery information of the battery;
the battery charging processing module is used for charging the battery according to the battery information and recording charging information;
and the battery full charge identification module is used for calculating the battery charging condition according to the charging information and judging whether the battery is charged or not.
In addition, to achieve the above object, the present invention also proposes a storage medium having stored thereon a program of an electric vehicle battery-based charging method, which when executed by a processor, implements the steps of the electric vehicle battery-based charging method as described above.
In addition, in order to achieve the above object, the present invention further provides a power exchange cabinet, including: a memory, a processor and a program of an electric vehicle battery based charging method stored on the memory and executable on the processor, the program of the electric vehicle battery based charging method being configured to implement the steps of the electric vehicle battery based charging method as described above.
The invention has the beneficial effects that: the invention provides a charging method, a charging system, a storage medium and a power change cabinet based on an electric vehicle battery, which can prolong the service life of the electric vehicle battery by acquiring battery information and controlling charging current according to the battery information.
Drawings
FIG. 1 is a flow chart of a method for charging an electric vehicle battery according to the present invention;
FIG. 2 is a block diagram of an electric vehicle battery-based charging system provided by the present invention;
fig. 3 is a schematic structural diagram of the power change cabinet provided by the invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the charging method based on the electric vehicle battery provided by the present invention specifically includes:
and S1, collecting battery information of the battery.
The method comprises the steps of collecting battery information of a battery, wherein the battery information comprises a battery SOC value, a battery SOH value, a battery core temperature value, a battery core voltage difference value, a single-section battery core voltage value and a battery charging current, the battery SOC value represents the ratio of the residual capacity of the battery after the battery is used for a period of time or is placed for a long time without use to the capacity of the battery in a full charging state, the common percentage represents that the battery is completely discharged when the battery SOC value is 0%, the battery is completely charged when the battery SOC value is 100%, the battery SOH value represents the ratio of the current capacity of the battery divided by the nominal capacity, the battery core temperature value is the temperature value of a battery core, the battery core voltage difference value is the voltage difference value of each section of the battery, the single-section battery core voltage value is the single-section voltage value, and the battery charging current is the current during charging.
And S2, charging the battery according to the battery information and recording the charging information.
After battery information is acquired, corresponding matching is carried out according to battery information numerical values, if the electric core temperature value of the lithium battery is less than or equal to 10 ℃, or the electric core temperature value is less than or equal to 55 ℃ and the battery SOC value is less than or equal to 5%, if the battery is in the numerical value range, the current battery state can be judged to be not good or in a feeding state and cannot be charged by large current according to the numerical values, and the battery can be effectively protected by using the battery charging current 2A, so that the battery is prevented from being further damaged.
If the temperature value of the battery core is more than or equal to 40 ℃ and less than 50 ℃, or if the SOC value of the battery is more than or equal to 5% and less than or equal to 10%, or the SOC value of the battery is more than 80%, or the state of warehouse prohibition, and if the SOH value of the battery is less than or equal to 80%, according to the numerical values, the battery can not be charged with large current based on the self health of the battery and the current battery condition, the battery can be damaged when the large current quick charging is carried out, the battery charging current is 2A, the battery is protected, and if the SOH value of the battery is more than 80%, the self health state of the battery is better, the battery can be quickly charged, and the service life of the battery can not be influenced, and the battery charging current is 4A; it should be noted that the forbidden state means that the SOH value of the battery is only 50%
If the temperature value of the battery core is higher than 10 ℃ and lower than 40 ℃, or if the SOC value of the battery is higher than 10% and lower than or equal to 80%, if the battery is in the numerical value ranges, the current state of the battery is good according to the numerical values, the charging current of the battery can be rotated according to the actual SOH value of the battery, in order to prevent the damage of the battery caused by heavy current, if the SOH value of the battery is lower than or equal to 80%, the charging current of the battery is 4A, and if the SOH value of the battery is higher than 80%, the health degree of the battery is high, the charging current of the battery is 8A;
when the temperature value of the electric core is larger than or equal to 55 ℃, the charging is stopped, the potential safety hazard is prevented, the temperature value of the electric core is checked, the temperature value of the electric core can be detected once every one minute, or can be detected once every thirty seconds, or can be detected once every two minutes, and the like, and when the temperature value of the electric core is reduced to 50 ℃, the charging current of the battery 2A can be used. It should be noted that, in the charging process, the magnitude of the charging current is adjusted at any time according to the battery information, so that the curve charging is continuously learned and optimally adjusted, and the service life of the battery is prolonged.
And S3, calculating the battery charging condition according to the charging information, and judging whether the battery is charged.
And calculating battery classification information according to the charging information.
According to the battery information of the battery, data information can be detected in the charging state of the battery, and if the SOC value of the battery is more than 80%, the voltage value of a single cell is more than 3.4V and the cell voltage difference value is more than or equal to 100mV according to the data information, the data information is a lithium iron phosphate battery equalization condition, and when the battery is equalized, the output current of a charging power supply is 500mA, the charging battery is a lithium iron phosphate battery;
if the SOC value of the battery is more than 80%, the voltage value of a single cell is more than 3.8V and the cell voltage difference value is more than or equal to 60mV, the battery is the balancing condition of the ternary lithium battery, and the output current of the charging power supply is 500mA during battery balancing, the rechargeable battery is the ternary lithium battery. It should be noted that if the voltage value of a single cell is greater than 3.8V and the cell voltage difference value is greater than or equal to 100mV, it is determined as a ternary lithium battery.
And judging whether the battery is charged or not according to the battery classification information.
Aiming at different types of lithium batteries, the full-charge conditions of the lithium iron phosphate batteries are different, wherein the full-charge conditions of the lithium iron phosphate batteries are that if the SOC value of the battery is more than 96%, the cell voltage difference value is detected, the cell voltage difference value is more than 100mV and lasts for 5-30 seconds, wherein the continuous detection time can be adjusted according to the actual use condition, if the adjustment is one minute, two minutes and the like, the battery is in a full-charge state, and the charging is stopped; if the SOC value of the battery is 100% and lasts for 5-30 seconds, the duration of the continuous detection may be adjusted according to the actual usage, for example, the battery is fully charged and the charging is stopped when the duration is adjusted to one minute, two minutes, etc.; if the cell voltage difference value is less than 100mV, it indicates that the battery is not fully charged, and the charging is continued.
Under the full-charge condition of the ternary lithium battery, if the SOC value of the battery is more than 96%, the cell differential pressure value is detected, the cell differential pressure value is more than 60mV and lasts for 5-30 seconds, wherein the continuous detection time can be adjusted according to the actual use condition, if the continuous detection time is adjusted to one minute, two minutes and the like, the battery is in a full-charge state, and the charging is stopped; if the SOC value of the battery is 100% and lasts for 5-30 seconds, the duration of the continuous detection may be adjusted according to the actual usage, for example, one minute, two minutes, etc., the battery is fully charged, and the charging is stopped. If the cell voltage difference value is less than 60mV, it indicates that the battery is not fully charged, and the charging is continued.
Referring to fig. 2, in addition, an embodiment of the present invention further provides a charging system based on an electric vehicle battery, where the charging system includes:
a battery collecting module 2001 for collecting battery information of the battery;
a battery charging processing module 2002 for charging the battery according to the battery information and recording the charging information;
and the battery full charge identification module 2003 calculates the battery charging condition according to the charging information and judges whether the battery is charged or not.
Furthermore, an embodiment of the present invention also provides a storage medium having a program of an electric vehicle battery-based charging method stored thereon, which when executed by a processor implements the steps of the electric vehicle battery-based charging method as described above.
Referring to fig. 3, in addition, an embodiment of the present invention further provides a battery replacement cabinet, where the battery replacement cabinet includes: a memory 3002, a processor 3001 and a program of an electric vehicle battery-based charging method stored on the memory and executable on the processor 3001, the program of the electric vehicle battery-based charging method being configured to implement the steps of the electric vehicle battery-based charging method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The charging method based on the electric vehicle battery is characterized by comprising the following steps:
s1, collecting battery information of the battery;
s2, charging the battery according to the battery information, and recording the charging information;
and S3, calculating the battery charging condition according to the charging information, and judging whether the battery is charged.
2. The electric vehicle battery-based charging method according to claim 1, wherein the battery information includes a battery SOC value, a battery SOH value, a cell temperature value, a cell differential pressure value, a cell voltage value, and a battery charging current.
3. The charging method based on the electric vehicle battery as claimed in claim 2, wherein the step S2 specifically comprises:
s21, setting the cell temperature value to be less than or equal to 10 ℃ or 50 ℃ to be less than or equal to 55 ℃ or the battery SOC value to be less than or equal to 5%, and setting the battery charging current to be 2A;
s22, setting the battery core temperature value between 40 ℃ and 40 ℃ to be less than 50 ℃, or setting the battery SOC value between 5% and 80%, or keeping the battery SOC value to be less than 10%, wherein if the battery SOH value is less than or equal to 80%, the battery charging current is 2A, and if the battery SOH value is more than 80%, the battery charging current is 4A;
s23, setting the battery core temperature value between 10 ℃ and 40 ℃ or setting the battery SOC value between 10% and 80%, if the battery SOH value is 80%, then the battery charging current is 4A, if the battery SOH value is 80%, then the battery charging current is 8A;
and S24, stopping charging when the temperature value of the battery core is larger than or equal to 55 ℃, checking the temperature value of the battery core, and if the temperature value of the battery core is reduced to 50 ℃, determining the charging current of the battery to be 2A.
4. The charging method based on the electric vehicle battery as claimed in claim 3, wherein the step S3 specifically comprises:
s31, calculating battery classification information according to the charging information;
and S32, judging whether the battery is charged according to the battery classification information.
5. The charging method based on the electric vehicle battery as claimed in claim 4, wherein the step S31 specifically comprises:
s311, if the SOC value of the battery is more than 80%, the voltage value of a single cell is more than 3.4V, and the voltage difference value of the cell is more than or equal to 100mV, the rechargeable battery is a lithium iron phosphate battery;
and S312, if the SOC value of the battery is more than 80%, the voltage value of a single cell is more than 3.8V, and the cell voltage difference value is more than or equal to 60mV, the rechargeable battery is a ternary lithium battery.
6. The charging method based on the electric vehicle battery as claimed in claim 5, wherein the step S32 specifically comprises:
s321, under the full-charge condition of the lithium iron phosphate battery, if the SOC value of the battery is larger than 96%, detecting a cell voltage difference value, wherein the cell voltage difference value is larger than 100mV, and the battery is in a full-charge state and stops charging; if the SOC value of the battery is 100%, the battery is in a full-charge state, and the charging is stopped;
s322, under the full-charge condition of the ternary lithium battery, if the SOC value of the battery is larger than 96%, the cell differential pressure value is detected, and the cell differential pressure value is larger than 60mV, the battery is in a full-charge state, and the charging is stopped; if the SOC value of the battery is 100%, the battery is fully charged and charging is stopped.
7. The electric vehicle battery-based charging method according to claim 3, wherein in the step S24, the cell temperature value is checked every other minute.
8. A charging system based on an electric vehicle battery, the system comprising:
the battery acquisition module is used for acquiring battery information of the battery;
the battery charging processing module is used for charging the battery according to the battery information and recording charging information;
and the battery full charge identification module is used for calculating the battery charging condition according to the charging information and judging whether the battery is charged or not.
9. Storage medium, characterized in that the storage medium has stored thereon a program of an electric vehicle battery-based charging method, which when executed by a processor implements the steps of the electric vehicle battery-based charging method according to any one of claims 1 to 7.
10. The cabinet of changing electricity, its characterized in that, the cabinet of changing electricity includes: a memory, a processor and a program of an electric vehicle battery based charging method stored on the memory and executable on the processor, the program of the electric vehicle battery based charging method being configured to implement the steps of the electric vehicle battery based charging method as claimed in any one of claims 1 to 7.
CN202111061619.XA 2021-09-10 2021-09-10 Charging method and system based on electric vehicle battery, storage medium and battery replacement cabinet Pending CN113809798A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115439983A (en) * 2022-09-23 2022-12-06 协鑫电港云科技(海南)有限公司 Battery replacement settlement method and device, storage medium and electronic equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115439983A (en) * 2022-09-23 2022-12-06 协鑫电港云科技(海南)有限公司 Battery replacement settlement method and device, storage medium and electronic equipment
CN115439983B (en) * 2022-09-23 2024-02-02 协鑫电港云科技(海南)有限公司 Electricity-exchanging settlement method and device, storage medium and electronic equipment

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