CN115425729A - Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium - Google Patents

Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium Download PDF

Info

Publication number
CN115425729A
CN115425729A CN202211210550.7A CN202211210550A CN115425729A CN 115425729 A CN115425729 A CN 115425729A CN 202211210550 A CN202211210550 A CN 202211210550A CN 115425729 A CN115425729 A CN 115425729A
Authority
CN
China
Prior art keywords
lithium battery
temperature value
photovoltaic
output power
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211210550.7A
Other languages
Chinese (zh)
Inventor
黄言
岳冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Topband Battery Co ltd
Original Assignee
Shenzhen Topband Battery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Topband Battery Co ltd filed Critical Shenzhen Topband Battery Co ltd
Priority to CN202211210550.7A priority Critical patent/CN115425729A/en
Publication of CN115425729A publication Critical patent/CN115425729A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection 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
    • H02J7/007188—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
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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

Abstract

The invention relates to a photovoltaic-adaptive BMS charging method, photovoltaic-adaptive BMS charging equipment, photovoltaic-adaptive BMS charging device, a photovoltaic-adaptive BMS controller and a storage medium, and relates to the technical field of lithium battery heating. The photovoltaic-adaptive lithium battery charging method comprises the following steps: monitoring the temperature value of a battery core of the lithium battery and acquiring the output power of the photovoltaic charger; if the temperature value is lower than a preset reference temperature value and the output power is not in a preset output power range, controlling the lithium battery to heat a heating film of the lithium battery; and when the temperature value reaches the reference temperature value or above and is lower than a preset maximum temperature value, charging the lithium battery. The lithium battery discharges to provide heating current for the heating film, and the safety of the heating film in heating is guaranteed. The battery cell can be charged in a safe temperature range, the situation that the battery cell is damaged due to the fact that the battery cell is charged when the temperature of the battery cell is too low is avoided, and the problem that the battery cannot be charged safely in a low-temperature environment is solved.

Description

Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium
Technical Field
The invention relates to the technical field of lithium battery heating, in particular to a photovoltaic-adaptive BMS charging method, photovoltaic-adaptive BMS charging equipment, photovoltaic-adaptive BMS charging device, a photovoltaic-adaptive BMS controller and a storage medium.
Background
In the existing lithium battery charging, the battery is charged under a low-temperature environment, so that the battery core is damaged. In a low-temperature environment, the temperature of the battery cell of the lithium battery needs to be within a safe range so that the battery can be safely charged. In the existing heating method, the temperature of the battery core of the lithium battery cannot be increased to a safe range under the condition that the power of the photovoltaic charger is insufficient, namely, the lithium battery cannot be charged safely, so that the problem that the lithium battery cannot be charged in a low-temperature environment is caused.
Disclosure of Invention
The invention provides a photovoltaic-adaptive BMS charging method, device, controller and storage medium, and aims to solve the problem that a lithium battery cannot be charged due to too low temperature of the lithium battery in the prior art.
In a first aspect, the present invention provides a photovoltaic-adapted lithium battery charging method, comprising:
monitoring the temperature value of a battery core of the lithium battery and acquiring the output power of the photovoltaic charger;
if the temperature value is lower than a preset reference temperature value and the output power is not in a preset output power range, controlling the lithium battery to heat a heating film of the lithium battery;
and when the temperature value reaches the reference temperature value or above and is lower than a preset maximum temperature value, charging the lithium battery.
Its further technical scheme does, control the lithium cell is to the heating film of lithium cell heats, includes:
and controlling the discharge current output by the lithium battery to the heating film within a preset current range, and heating the heating film.
Its further technical scheme does, if the temperature value is less than preset benchmark temperature value and when output power was not in preset output power scope, control the lithium cell is to the heating membrane of lithium cell heats, include:
if the temperature value is lower than a preset reference temperature value and the output power is lower than a preset reference output power, controlling the lithium battery to heat the heating film;
if the temperature value is lower than a preset reference temperature value and the output power is higher than a preset maximum output power, controlling the lithium battery to heat the heating film; wherein the maximum output power is greater than the reference output power.
The further technical scheme is that the method also comprises the following steps:
and if the charging current of the lithium battery is not in a preset charging range and/or the discharging current of the lithium battery is not in a preset discharging range, sending a lithium battery charging and discharging abnormity warning to a terminal.
The further technical scheme is that the method also comprises the following steps:
monitoring the voltage of a cell of the lithium battery;
when the voltage of the battery core of the lithium battery is lower than a preset reference voltage value, judging whether the lithium battery outputs the discharge current;
and if the lithium battery outputs the discharge current, controlling the lithium battery to stop outputting the discharge current.
The further technical scheme is that the method also comprises the following steps:
acquiring a current value of the photovoltaic charger;
judging whether the current value of the photovoltaic charger is within a preset charging current range or not;
and if the current value of the photovoltaic charger is not within the preset charging current range, controlling the photovoltaic charger to stop outputting current to the lithium battery.
In a second aspect, the invention provides a photovoltaic adaptive BMS charging device, which comprises a core controller, a voltage detection module, a battery charging and discharging current detection module, a temperature detection module, a heating switch, a heating current detection module, a charger detection module, a photovoltaic charger, a lithium battery cell and a lithium battery heating film; the core controller is respectively connected with the voltage detection module, the battery charging and discharging current detection module, the temperature detection module, the heating switch, the heating current detection module, the charger detection module, the photovoltaic charger, the battery core and the heating film; the battery cell is respectively connected with the voltage detection module, the battery charging and discharging current detection module and the temperature detection module; the heating film is respectively connected with the temperature detection module, the heating switch and the heating current detection module; the charger detection module is connected with the photovoltaic charger; the core controller is adapted to perform the method according to the first aspect.
In a third aspect, the present invention provides a photovoltaic-adapted BMS charging device comprising means for performing the method according to the first aspect.
In a fourth aspect, the present invention provides a controller, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the steps of the method according to the first aspect when executing a program stored in the memory.
In a fifth aspect, the invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method according to the first aspect.
The invention has the beneficial effects that:
when the temperature value is lower than the preset reference temperature value and the output power is not in the preset output power range, the output power not in the preset output power range can be divided into too low output power/too high output power. When the temperature value is lower than the preset reference temperature value and the output power is too low, namely the photovoltaic charger can not heat the heating film of the lithium battery under the low-temperature environment, the lithium battery is controlled to heat the heating film at the moment, the heating film is heated by discharging through the lithium battery, so that the heating film can heat the electric core of the lithium battery, and finally the temperature value of the electric core reaches the temperature value higher than the reference temperature value and lower than the preset maximum temperature value. When the temperature value is lower than the preset reference temperature value and the output power is too high, the heating film is damaged, so that the current for heating the heating film is required to be supplied by discharging of the lithium battery, and the safety of the heating film in heating is ensured. The temperature value through making electric core reaches more than the reference temperature value and be less than the maximum temperature value of predetermineeing, also make electric core charge in the temperature range of safety promptly, prevent that the temperature of electric core from charging and causing the condition emergence of electric core damage to electric core when crossing excessively, solved and can't carry out the problem of safe charging to the battery under low temperature environment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a photovoltaic adaptive BMS charging method according to embodiment 1 of the present invention;
fig. 2 is a schematic flowchart of a pv-compliant BMS charging method according to embodiment 2 of the present invention;
fig. 3 is a structural diagram of a photovoltaic-adapted BMS charging device according to embodiment 3 of the present invention;
fig. 4 is a structural diagram of a photovoltaic-compliant BMS charging device according to embodiment 4 of the present invention;
fig. 5 is a structural diagram of a photovoltaic-compliant BMS charging device according to embodiment 5 of the present invention;
fig. 6 is a structural diagram of a controller provided in the present invention.
Detailed Description
In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and illustrated with reference to the following specific embodiments, but not limited thereto.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1, an embodiment 1 of the present invention provides a photovoltaic adaptive BMS charging method, and the photovoltaic adaptive BMS charging method of embodiment 1 includes the steps of: S101-S103.
S101, monitoring the temperature value of the battery cell of the lithium battery and obtaining the output power of the photovoltaic charger.
In the embodiment of the invention, the photovoltaic adaptive BMS charging method is mainly realized through a heating device, wherein the heating device comprises a core controller, a voltage detection module, a battery charging and discharging current detection module, a temperature detection module, a heating switch, a heating current detection module, a charger detection module, a photovoltaic charger and a lithium battery. Go to detect the temperature value of the electric core of lithium cell through temperature detection module, can rise to the time of the below-mentioned predetermined reference temperature value through the temperature that detects the lithium cell in the stage that the lithium cell started the heating, just can heat the heating film of lithium cell, just so can make the lithium cell heat and can not take place because of the damage condition of heating the lithium cell that leads to under the low temperature state in the temperature range of safety. The temperature detection module may be embodied as a temperature detection circuit. The output power of the photovoltaic charger is obtained through a charger detection module, which can be specifically a charger current detection circuit. Under the low temperature state, when photovoltaic charger's output is not enough, can't output corresponding electric current this moment and heat the lithium cell, the electric current of heating is provided to the certain electric current of accessible lithium cell self discharge output.
When the temperature value is lower than the preset reference temperature value and the output power is not in the preset output power range, the output power not in the preset output power range can be divided into too low output power/too high output power. When the temperature value is lower than the preset reference temperature value and output power is too low, namely the photovoltaic charger can not heat the heating film of the lithium battery under the low-temperature environment, the lithium battery is controlled to heat the heating film at the moment, the lithium battery is discharged through the lithium battery, the heating film is heated, and then the heating film can heat the battery cell of the lithium battery, so that the temperature value of the battery cell is higher than the reference temperature value and lower than the preset maximum temperature value. The temperature value through making electric core reach more than the reference temperature value and be less than preset maximum temperature value, also make electric core charge in the temperature range of safety promptly, prevent that the temperature of electric core from charging and causing the condition emergence of electric core damage to electric core when crossing excessively, solved and can't carry out the problem of safe charging to the battery under low temperature environment.
The core controller can process the parameters of current, voltage, output power and the like detected by the modules, and then issues control instructions to the modules and the lithium battery in real time. The core control ware simultaneously can report computer terminal and cell-phone APP in real time with whole BMS charging device's information, conveniently monitors whole BMS charging device's each item data.
S102, if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is not within a preset output power range, controlling the lithium battery to heat a heating film of the lithium battery.
In the embodiment of the present invention, the preset reference temperature value may be set according to actual requirements, and if the reference temperature value is set to 0 ℃, when the temperature value of the battery cell of the lithium battery is lower than 0 ℃, the battery cell is in a low temperature state, and at this time, the lithium battery needs to be heated by the heating film to reach a safe temperature range, so that the lithium battery in the low temperature state can be charged. The output power not in the preset output power range can be divided into too low output power/too high output power. When the temperature value is lower than the preset reference temperature value and output power is too low, namely the photovoltaic charger can not heat the heating film of the lithium battery under the low-temperature environment, the lithium battery is controlled to heat the heating film at the moment, the lithium battery is discharged through the lithium battery, the heating film is heated, and then the heating film can heat the battery cell of the lithium battery, so that the temperature value of the battery cell is higher than the reference temperature value and lower than the preset maximum temperature value. When the temperature value is lower than the preset reference temperature value and the output power is too high, the heating film is damaged, so that the current for heating the heating film is required to be supplied by discharging of the lithium battery, and the safety of the heating film in heating is ensured.
In one embodiment, controlling a lithium battery to heat a heating film of the lithium battery includes:
and controlling the discharge current output to the heating film by the lithium battery to be within a preset current range, and heating the heating film.
In the embodiment of the invention, the preset current range can be set according to actual needs, because the lithium battery cannot output excessive current when outputting current, otherwise, the good performance of the lithium battery cell is affected, and therefore, the discharging current of the lithium battery needs to be controlled within the preset current range, and the safety of the lithium battery is ensured.
In one embodiment, the above step S102 includes the steps of: S1021-S1022.
And S1021, if the temperature value of the battery cell is lower than the preset reference temperature value and the output power of the photovoltaic charger is lower than the preset reference output power, controlling the lithium battery to heat the heating film.
In the embodiment of the present invention, the preset reference output power may be set according to actual requirements. When the output power is lower than the preset reference output power, namely the output power of the photovoltaic charger is too low to provide heating for the heating film, the current required by the heating film is to heat the heating film through the self-discharge of the lithium battery.
S1022, if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is higher than a preset maximum output power, controlling the lithium battery to heat the heating film; wherein the maximum output power is greater than the reference output power.
In the embodiment of the invention, the preset maximum output power is set according to actual needs, and represents the maximum safe output power which can be output to the heating film by the photovoltaic charger, namely the maximum power which can be borne by the heating film. When the output power is higher than the preset maximum output power, namely the output power of the photovoltaic charger is too high, too large current can be output, and at the moment, the heating film cannot bear the too large current output by the photovoltaic charger to the heating film, so that the output current of the photovoltaic charger is stopped, and the lithium battery discharges to ensure the safety and reliability of heating.
And S103, charging the lithium battery when the temperature value of the battery core reaches above the reference temperature value and is lower than the preset maximum temperature value.
In the embodiment of the present invention, the preset maximum temperature value may be set according to actual needs, and it may be determined whether the temperature value of the electric core of the current lithium battery exceeds the temperature within the safety range through the preset maximum temperature value, so that when the temperature value of the electric core of the lithium battery reaches above the reference temperature value and is lower than the preset maximum temperature value, the maximum temperature value is a limit temperature value that the electric core of the lithium battery can bear, and when the temperature value of the electric core of the lithium battery exceeds the maximum temperature value, the electric core may be damaged, and therefore the temperature value of the electric core of the lithium battery may be charged only when the temperature value of the electric core of the lithium battery reaches above the reference temperature value and is lower than the maximum temperature value. When the temperature value of the electric core of the lithium battery is higher than the maximum temperature value, namely the temperature exceeds the temperature within the safety range, the lithium battery needs to be stopped to be charged, and then the lithium battery is prevented from being damaged.
Example 2
Referring to fig. 2, an embodiment 2 of the present invention provides a photovoltaic adaptive BMS charging method, and the photovoltaic adaptive BMS charging method of embodiment 2 includes the steps of: S201-S210.
S201, monitoring a temperature value of a battery core of the lithium battery and acquiring output power of the photovoltaic charger.
In the embodiment of the invention, the photovoltaic adaptive BMS charging method is mainly realized through a heating device, wherein the heating device comprises a core controller, a voltage detection module, a battery charging and discharging current detection module, a temperature detection module, a heating switch, a heating current detection module, a charger detection module, a photovoltaic charger and a lithium battery. Go to detect the temperature value of the electric core of lithium cell through temperature detection module, can rise to the time of the below-mentioned predetermined reference temperature value through the temperature that detects the lithium cell in the stage that the lithium cell started the heating, just can heat the heating film of lithium cell, just so can make the lithium cell heat and can not take place because of the damage condition of heating the lithium cell that leads to under the low temperature state in the temperature range of safety. The temperature detection module may be embodied as a temperature detection circuit. The output power of the photovoltaic charger is obtained through a charger detection module, and the charger detection module can be specifically a charger current detection circuit. Under the low temperature state, when photovoltaic charger's output is not enough, can't output corresponding electric current this moment and heat the lithium cell, the electric current of heating is provided to the certain electric current of accessible lithium cell self discharge output.
When the temperature value is lower than the preset reference temperature value and the output power is not in the preset output power range, the output power not in the preset output power range can be divided into too low output power/too high output power. When the temperature value is lower than the preset reference temperature value and output power is too low, namely the photovoltaic charger can not heat the heating film of the lithium battery under the low-temperature environment, the lithium battery is controlled to heat the heating film at the moment, the lithium battery is discharged through the lithium battery, the heating film is heated, and then the heating film can heat the battery cell of the lithium battery, so that the temperature value of the battery cell is higher than the reference temperature value and lower than the preset maximum temperature value. The temperature value through making electric core reach more than the reference temperature value and be less than preset maximum temperature value, also make electric core charge in the temperature range of safety promptly, prevent that the temperature of electric core from charging and causing the condition emergence of electric core damage to electric core when crossing excessively, solved and can't carry out the problem of safe charging to the battery under low temperature environment.
The core controller can process the parameters of current, voltage, output power and the like detected by the modules, and then issues control instructions to the modules and the lithium battery in real time. The core controller can report the information of the whole BMS charging device to a computer terminal and a mobile phone APP in real time at the same time, and various data of the whole BMS charging device are monitored conveniently.
S202, if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is not within a preset output power range, controlling the lithium battery to heat a heating film of the lithium battery.
In the embodiment of the present invention, the preset reference temperature value may be set according to actual requirements, and if the reference temperature value is set to 0 ℃, when the temperature value of the battery cell of the lithium battery is lower than 0 ℃, the battery cell is in a low temperature state, and at this time, the lithium battery needs to be heated by the heating film to reach a safe temperature range, so that the lithium battery in the low temperature state can be charged. The output power not in the preset output power range can be divided into too low output power/too high output power. When the temperature value is lower than the preset reference temperature value and output power is too low, namely the photovoltaic charger can not heat the heating film of the lithium battery under the low-temperature environment, the lithium battery is controlled to heat the heating film at the moment, the lithium battery is discharged through the lithium battery, the heating film is heated, and then the heating film can heat the battery cell of the lithium battery, so that the temperature value of the battery cell is higher than the reference temperature value and lower than the preset maximum temperature value. When the temperature value is less than preset reference temperature value and output was too high, can cause the damage to the heating film this moment, consequently need discharge through lithium cell self and provide the electric current of heating for the heating film, security when guaranteeing to the heating film heating.
In one embodiment, controlling a lithium battery to heat a heating film of the lithium battery includes:
and controlling the discharge current output to the heating film by the lithium battery to be within a preset current range, and heating the heating film.
In the embodiment of the invention, the preset current range can be set according to actual needs, because the lithium battery cannot output excessive current when outputting current, otherwise, the good performance of the lithium battery cell is affected, and therefore, the discharging current of the lithium battery needs to be controlled within the preset current range, and the safety of the lithium battery is ensured.
In one embodiment, the above step S202 includes the steps of: S2021-S2022.
S2021, if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is lower than a preset reference output power, controlling the lithium battery to heat the heating film.
In the embodiment of the present invention, the preset reference output power may be set according to actual requirements. When the output power is lower than the preset reference output power, namely the output power of the photovoltaic charger is too low to provide heating for the heating film, the current required by the heating film is to heat the heating film through the self-discharge of the lithium battery.
S2022, if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is higher than a preset maximum output power, controlling the lithium battery to heat the heating film; wherein the maximum output power is greater than the reference output power.
In the embodiment of the invention, the preset maximum output power is set according to actual needs, and represents the maximum safe output power which can be output to the heating film by the photovoltaic charger, namely the maximum power which can be borne by the heating film. When the output power is higher than the preset maximum output power, namely the output power of the photovoltaic charger is too high, too large current can be output, and at the moment, the heating film cannot bear the too large current output by the photovoltaic charger to the heating film, so that the output current of the photovoltaic charger is stopped, and the lithium battery discharges to ensure the safety and reliability of heating.
And S203, charging the lithium battery when the temperature value of the battery core reaches above the reference temperature value and is lower than the preset maximum temperature value.
In the embodiment of the present invention, the preset maximum temperature value may be set according to actual needs, and it may be determined whether the temperature value of the electric core of the current lithium battery exceeds the temperature within the safety range through the preset maximum temperature value, so that when the temperature value of the electric core of the lithium battery reaches above the reference temperature value and is lower than the preset maximum temperature value, the maximum temperature value is a limit temperature value that the electric core of the lithium battery can bear, and when the temperature value of the electric core of the lithium battery exceeds the maximum temperature value, the electric core may be damaged, and therefore the temperature value of the electric core of the lithium battery may be charged only when the temperature value of the electric core of the lithium battery reaches above the reference temperature value and is lower than the maximum temperature value. When the temperature value of the electric core of the lithium battery is higher than the maximum temperature value, namely the temperature exceeds the temperature within the safety range, the lithium battery needs to be stopped to be charged, and then the lithium battery is prevented from being damaged.
And S204, if the charging current of the lithium battery is not in the preset charging range and/or the discharging current of the lithium battery is not in the preset discharging range, sending a warning of abnormal charging and discharging of the lithium battery to the terminal.
In the embodiment of the invention, the charging current of the lithium battery and the discharging current of the lithium battery can be monitored by the core controller. The preset charging range and the preset discharging range can be set through actual needs, and when the charging current of the lithium battery is not in the preset charging range or the discharging current of the lithium battery is not in the preset discharging range, a lithium battery charging and discharging abnormity warning is sent to a terminal such as a mobile phone APP, a computer client and the like, so that the current abnormal charging and discharging of the lithium battery is indicated. Meanwhile, the charging current and the discharging current of the lithium battery can be controlled by the core controller to be adjusted back to the preset charging range and discharging range, so that reasonable charging and discharging of the lithium battery are guaranteed, and the lithium battery is prevented from being damaged.
And S205, monitoring the voltage of the battery cell of the lithium battery.
Specifically, the voltage of the battery cell of the lithium battery is monitored through the voltage detection module, and under the condition that the voltage of the battery cell of the lithium battery is low, if the voltage is further discharged, the voltage difference of the battery cell of the lithium battery is likely to be large, so that the consistency of the battery cell is damaged. The voltage detection module is used for detecting the voltage of the battery core, and when the battery is still discharging in a low-voltage state, the core controller controls the battery core to stop outputting current, so that the electric energy of the lithium battery is prevented from being further lost. When the battery voltage is low, discharge is not allowed, and in this case, the voltage of the battery cell drops to an unstable state due to discharge, which may cause the lithium battery to be unable to be charged.
And S206, judging whether the lithium battery outputs the discharge current or not when the voltage of the battery core of the lithium battery is lower than a preset reference voltage value.
In the embodiment of the invention, when the voltage of the battery core of the lithium battery is lower than the preset reference voltage value, whether the lithium battery outputs the discharge current is judged, that is, if the lithium battery continues to discharge the output current under the condition of low voltage, the electric energy of the lithium battery is further consumed.
And S207, if the lithium battery outputs the discharge current, controlling the lithium battery to stop outputting the discharge current.
Specifically, under the condition of low voltage of the battery core of the lithium battery, if the discharging current is continuously output, the lithium battery needs to be controlled to stop outputting the discharging current at this time, so that the good performance of the lithium battery is ensured.
And S208, acquiring a current value of the photovoltaic charger.
Specifically, the current value of the photovoltaic charger is obtained through the charger detection module, because the output current of the photovoltaic charger is provided for charging the lithium battery and starting the heating film, whether the current output current is in a safe range can be judged by obtaining the current value of the photovoltaic charger, and if the current of the photovoltaic charger is too large, the lithium battery and the heating film are damaged.
S209, judging whether the current value of the photovoltaic charger is within a preset charging current range.
Specifically, by determining whether the current value of the photovoltaic charger is within a preset charging current range, the preset charging current range may be set according to actual needs, which is not limited herein. The judgment of the current value of the photovoltaic charger can know whether the output power of the photovoltaic charger is too large and exceeds a safety range.
And S210, if the current value of the photovoltaic charger is not within the preset charging current range, controlling the photovoltaic charger to stop outputting current to the lithium battery.
Specifically, when the current value of the photovoltaic charger is not within the preset charging current range, that is, the current value of the photovoltaic charger may damage the lithium battery and the heating film due to an excessive current, the photovoltaic charger needs to be controlled to stop outputting the current to the lithium battery, so as to ensure the safety of heating and charging.
Example 3
The embodiment 3 of the invention provides photovoltaic adaptive BMS charging equipment, which comprises a core controller 1, a voltage detection module 2, a battery charging and discharging current detection module 3, a temperature detection module 4, a heating switch 5, a heating current detection module 6, a charger detection module 7, a photovoltaic charger 8, a battery cell 9 of a lithium battery and a heating film 10 of the lithium battery; the core controller 1 is respectively connected with a voltage detection module 2, a battery charging and discharging current detection module 3, a temperature detection module 4, a heating switch 5, a heating current detection module 6, a charger detection module 7, a photovoltaic charger 8, an electric core 9 and a heating film 10; the battery cell 9 is respectively connected with the voltage detection module 2, the battery charge-discharge current detection module 3 and the temperature detection module 4; the heating film 10 is respectively connected with the temperature detection module 4, the heating switch 5 and the heating current detection module 6; the charger detection module 7 is connected with the photovoltaic charger 8; the core controller 1 is used to perform the photovoltaic adapted BMS charging method as in embodiment 1 or embodiment 2.
Example 4
Referring to fig. 4, embodiment 4 of the present invention provides a photovoltaic adaptive BMS charging device 400, and the photovoltaic adaptive BMS charging device 400 includes a first monitoring unit 401, a first control unit 402, and a charging unit 403.
The first monitoring unit 401 is configured to monitor a temperature value of a battery cell of the lithium battery and obtain an output power of the photovoltaic charger.
The first control unit 402 is configured to control the lithium battery to heat a heating film of the lithium battery if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is not within a preset output power range.
The charging unit 403 is configured to charge the lithium battery when the temperature value of the battery cell reaches the reference temperature value or higher and is lower than a preset maximum temperature value.
In one embodiment, the method for controlling the lithium battery to heat a heating film of the lithium battery comprises the following steps:
and controlling the discharge current output to the heating film by the lithium battery to be within a preset current range, and heating the heating film.
In an embodiment, if the temperature value of the electric core is lower than the preset reference temperature value and the output power of the photovoltaic charger is not within the preset output power range, controlling the lithium battery to heat the heating film of the lithium battery, including:
if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is lower than a preset reference output power, controlling the lithium battery to heat the heating film;
if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is higher than a preset maximum output power, controlling the lithium battery to heat the heating film; wherein the maximum output power is greater than the reference output power.
Example 5
Referring to fig. 5, an embodiment 5 of the present invention provides a photovoltaic-adapted BMS charging device 400, and the photovoltaic-adapted BMS charging device 400 of the embodiment 5 is different from the photovoltaic-adapted BMS charging device 400 of the embodiment 4 in that it further includes: a second control unit 404, a second monitoring unit 405, a first judging unit 406, a third control unit 407, an obtaining unit 408, a second judging unit 409, and a fourth control unit 410.
And a second control unit 404, configured to send a lithium battery charging and discharging abnormality warning to the terminal if the charging current of the lithium battery is not within the preset charging range and/or the discharging current of the lithium battery is not within the preset discharging range.
And a second monitoring unit 405, configured to monitor a voltage of a cell of the lithium battery.
The first determining unit 406 is configured to determine whether the lithium battery outputs a discharge current when the voltage of the battery cell of the lithium battery is lower than a preset reference voltage value.
The third control unit 407 is configured to control the lithium battery to stop outputting the discharge current if the lithium battery outputs the discharge current.
The obtaining unit 408 is configured to obtain a current value of the photovoltaic charger.
The second determining unit 409 is configured to determine whether a current value of the photovoltaic charger is within a preset charging current range.
The fourth control unit 410 is configured to control the photovoltaic charger to stop outputting the current to the lithium battery if the current value of the photovoltaic charger is not within the preset charging current range.
In one embodiment, the method for controlling the lithium battery to heat a heating film of the lithium battery comprises the following steps:
and controlling the discharge current output to the heating film by the lithium battery to be within a preset current range, and heating the heating film.
In an embodiment, if the temperature value of the electric core is lower than the preset reference temperature value and the output power of the photovoltaic charger is not within the preset output power range, controlling the lithium battery to heat the heating film of the lithium battery, including:
if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is lower than a preset reference output power, controlling the lithium battery to heat the heating film;
if the temperature value of the battery cell is lower than a preset reference temperature value and the output power of the photovoltaic charger is higher than a preset maximum output power, controlling the lithium battery to heat the heating film; wherein the maximum output power is greater than the reference output power.
Example 6
Referring to fig. 6, in the controller according to the embodiment of the present invention, the controller includes a processor 111, a communication interface 112, a memory 113, and a communication bus 114, where the processor 111, the communication interface 112, and the memory 113 complete mutual communication through the communication bus 114.
A memory 113 for storing a computer program;
and a processor 111 for executing the program stored in the memory 113 to implement the photovoltaic adaptive BMS charging method provided in embodiment 1 or 2.
Embodiment 5 of the present invention also provides a computer-readable storage medium on which a computer program is stored, which, when executed by the processor 111, implements the steps of the photovoltaic-adapted BMS charging method as provided in embodiment 1 or embodiment 2.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A method of photovoltaic-adapted charging of a lithium battery, the method comprising:
monitoring the temperature value of a battery core of the lithium battery and acquiring the output power of the photovoltaic charger;
if the temperature value is lower than a preset reference temperature value and the output power is not in a preset output power range, controlling the lithium battery to heat a heating film of the lithium battery;
and when the temperature value reaches the reference temperature value or above and is lower than a preset maximum temperature value, charging the lithium battery.
2. The photovoltaic-compliant BMS charging method of claim 1, wherein said controlling the lithium battery to heat a heating film of the lithium battery comprises:
and controlling the discharging current output by the lithium battery to the heating film within a preset current range, and heating the heating film.
3. The photovoltaic-adaptive BMS charging method according to claim 1, wherein said controlling the lithium battery to heat a heating film of the lithium battery if the temperature value is lower than a preset reference temperature value and the output power is not within a preset output power range comprises:
if the temperature value is lower than a preset reference temperature value and the output power is lower than a preset reference output power, controlling the lithium battery to heat the heating film;
if the temperature value is lower than a preset reference temperature value and the output power is higher than a preset maximum output power, controlling the lithium battery to heat the heating film; wherein the maximum output power is greater than the reference output power.
4. The photovoltaic-adapted BMS charging method according to claim 1, characterized in that the method further comprises:
and if the charging current of the lithium battery is not in a preset charging range and/or the discharging current of the lithium battery is not in a preset discharging range, sending a warning of abnormal charging and discharging of the lithium battery to a terminal.
5. The photovoltaic-adapted BMS charging method according to claim 1, characterized in that the method further comprises:
monitoring the voltage of a cell of the lithium battery;
when the voltage of the battery core of the lithium battery is lower than a preset reference voltage value, judging whether the lithium battery outputs the discharge current;
and if the lithium battery outputs the discharge current, controlling the lithium battery to stop outputting the discharge current.
6. The photovoltaic-adapted BMS charging method according to claim 1, characterized in that the method further comprises:
acquiring a current value of the photovoltaic charger;
judging whether the current value of the photovoltaic charger is within a preset charging current range or not;
and if the current value of the photovoltaic charger is not within the preset charging current range, controlling the photovoltaic charger to stop outputting current to the lithium battery.
7. A photovoltaic-adaptive BMS charging device is characterized by comprising a core controller, a voltage detection module, a battery charging and discharging current detection module, a temperature detection module, a heating switch, a heating current detection module, a charger detection module, a photovoltaic charger, an electric core of a lithium battery and a heating film of the lithium battery; the core controller is respectively connected with the voltage detection module, the battery charging and discharging current detection module, the temperature detection module, the heating switch, the heating current detection module, the charger detection module, the photovoltaic charger, the battery core and the heating film; the battery cell is respectively connected with the voltage detection module, the battery charging and discharging current detection module and the temperature detection module; the heating film is respectively connected with the temperature detection module, the heating switch and the heating current detection module; the charger detection module is connected with the photovoltaic charger; the core controller is configured to perform the method of any of claims 1-6.
8. A photovoltaic-adapted BMS charging apparatus, comprising means for performing the method of any of claims 1-6.
9. A controller is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the steps of the method as claimed in any one of claims 1 to 6 when executing the program stored in the memory.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
CN202211210550.7A 2022-09-30 2022-09-30 Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium Pending CN115425729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211210550.7A CN115425729A (en) 2022-09-30 2022-09-30 Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211210550.7A CN115425729A (en) 2022-09-30 2022-09-30 Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium

Publications (1)

Publication Number Publication Date
CN115425729A true CN115425729A (en) 2022-12-02

Family

ID=84206704

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211210550.7A Pending CN115425729A (en) 2022-09-30 2022-09-30 Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium

Country Status (1)

Country Link
CN (1) CN115425729A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116417711A (en) * 2023-06-09 2023-07-11 如果新能源科技(江苏)股份有限公司 Battery pack, battery energy storage system, charging control method and battery management system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116417711A (en) * 2023-06-09 2023-07-11 如果新能源科技(江苏)股份有限公司 Battery pack, battery energy storage system, charging control method and battery management system
CN116417711B (en) * 2023-06-09 2024-03-29 如果新能源科技(江苏)股份有限公司 Battery pack, battery energy storage system, charging control method and battery management system

Similar Documents

Publication Publication Date Title
EP3573174B1 (en) Battery pack heating apparatus and method of battery pack heating control
CN106785237B (en) Power battery thermal management method and system
CN203839477U (en) Low-temperature charging and heating device of automobile power battery and system
CN108777339B (en) Pulse discharge self-heating method and device for lithium ion battery
JP6486558B2 (en) Battery pack charge control apparatus and method
CN104638718A (en) Intelligent management system and method of electric vehicle battery
CN204376464U (en) A kind of battery of electric vehicle intelligent management system
WO2021083149A1 (en) Charging method and charging system
CN105514526A (en) Heating control system and method for battery module
CN109066918B (en) Control method of storage battery charging circuit, electric vehicle and storage medium
CN115425729A (en) Photovoltaic-adaptive BMS charging method, equipment, device, controller and storage medium
CN111864291A (en) Control method and device for lithium battery auxiliary heating system
CN110931918A (en) Battery pack device and battery pack device preheating method
CN114400388A (en) Energy storage system and battery heating method thereof
CN114142550A (en) Control method and device of energy storage device and energy storage device
CN109167108A (en) Tappered rating in battery management system limits guard method
CN116344980B (en) Battery core leakage self-diagnosis dynamic reconstruction system, method and storage medium in battery pack
CN105305367A (en) Overcurrent protection method and system
CN111384751A (en) Charge-discharge management system of lithium battery pack
CN116345622A (en) Switch tube protection method, battery pack and energy storage system
CN111313490B (en) Method, device, medium and system for charging and discharging battery stack
CN112909900A (en) Fault processing method and device and energy storage system
JP2012200113A (en) Battery pack and charging system
CN104716719A (en) Battery management device with fuse
CN112693357A (en) Power supply and discharge method and device for power battery of new energy automobile

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination