CN108693479A - A kind of battery health degree scaling method of power battery - Google Patents
A kind of battery health degree scaling method of power battery Download PDFInfo
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- CN108693479A CN108693479A CN201810475197.2A CN201810475197A CN108693479A CN 108693479 A CN108693479 A CN 108693479A CN 201810475197 A CN201810475197 A CN 201810475197A CN 108693479 A CN108693479 A CN 108693479A
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Abstract
The present invention relates to a kind of battery health degree scaling methods of power battery, are applied to charge-discharge machine, including:S11, the auxiliary source of progress low pressure powers on after connecting charging vehicle;S12, handshake operation is carried out, and receives charge information and discharge information;S13, the parameter configuration fixed for battery health scale is received, parameter configuration includes charge arrangement parameter and discharge configuration parameter;S14, it receives calibration strategy pattern and parameter configuration is carried out according to calibration strategy pattern;S15, calibration strategy pattern is executed, completes calibration.By applying the present invention, electric vehicle is not carried out returning factory be detected using special inspecting equipment in the case of, using the charge and discharge process of power battery, it is fixed that battery health scale safely and efficiently is carried out to power battery.
Description
Technical field
The present invention relates to electric automobile power batteries to demarcate field, more specifically to a kind of battery of power battery
Health degree scaling method.
Background technology
In recent years, with the development of energy revolution, electric vehicle is gradual to obtain as a kind of Second Revolution of orthodox car industry
It has arrived and has flourished, ended for the end of the year 2017 according to statistics, whole world electric vehicle ownership has broken through 3,300,000.And China is electronic
Car ownership has been sure to occupy the first in the world, and 2017 end of the year electric vehicle ownerships of cut-off have broken through 1,600,000.
The Zao Che main forces of electric vehicle are added in increasing battery enterprise and Automobile Enterprises, accelerate the fluffy of electric vehicle
The exhibition of breaking out.However, as further types of electric vehicle comes into the market, there are various problems in use in vehicle, wherein
The power performance of the as electric automobile power battery system of core the most.
Heart of the power battery as electric vehicle, with the test of vehicle various work condition environments in use,
Different degrees of decaying can occur at any time for power performance.The decaying of power battery performance includes can recovered part and irrecoverable
Part, wherein can recovered part can by finding in time, in time safeguard eliminate the partial properties decaying.
And how in time, accurately estimate the decaying situation of battery, i.e. the health degree SOH of battery, to battery management system
Be for BMS one be difficult the problem of.And the accuracy of power battery SOH estimations directly influences estimating for battery system SOC
Calculate exactness accurately.
Therefore when power battery performance decays, BMS the estimation of battery health degree then will appear estimate it is wrong from
And causing the SOC data estimations of BMS inaccurate, the person that may lead to car operation informs battery system in using vehicle processes in BMS
When the SOC that unites also has relatively margin, the operations such as vehicle cannot start or vehicle cannot be accelerated and be climbed, severe patient may
Vehicle is caused to stop power output in normal operation, situation of sitting on the way occurs in vehicle.
Invention content
The technical problem to be solved in the present invention is that above-mentioned for the prior art only leans on battery management system to power electric
The inaccurate defect of pond health degree calibration, provides a kind of battery health degree scaling method of power battery.
The technical solution adopted by the present invention to solve the technical problems is:Construct a kind of battery health scale of power battery
Determine method, is applied to charge-discharge machine, the method includes:
S11, the auxiliary source of progress low pressure powers on after connecting charging vehicle;
S12, handshake operation is carried out, and receives charge information and discharge information;
S13, the parameter configuration fixed for battery health scale is received, the parameter configuration includes charge arrangement
Parameter and discharge configuration parameter;
S14, it receives calibration strategy pattern and parameter configuration is carried out according to the calibration strategy pattern;
S15, the calibration strategy pattern is executed, completes calibration.
Preferably, the battery health degree scaling method of power battery of the present invention is shaken hands in the step S12
Operation includes:
S121, charge information message and discharge information message are sent;
S122, judge whether to receive charging confirmation message and electric discharge confirmation message;
If S123, otherwise retransmitting message;If S124, then entering and shaking hands the identification stage.
Preferably, the battery health degree scaling method of power battery of the present invention, is demarcated described in the step S14
Strategy pattern is:Electric discharge-standing-charge mode;
The calibration strategy pattern is executed described in the step S15 includes:
S1511, the charge-discharge machine carry out discharge operation, stop electric discharge after reaching electric discharge cut-off condition;
S1512, the charge-discharge machine enter static condition, stop power output;
S1513, the charge-discharge machine progress charging operations after preset time are stood, stops filling after reaching charge cutoff condition
Electricity.
Preferably, the battery health degree scaling method of power battery of the present invention, is demarcated described in the step S14
Strategy pattern is:Charging-standing-discharge mode;
The calibration strategy pattern is executed described in the step S15 includes:
S1521, the charge-discharge machine carry out charging operations, stop charging after reaching charge cutoff condition;
S1522, the charge-discharge machine enter static condition, stop power output;
S1523, the charge-discharge machine progress discharge operation after preset time is stood, stops putting after reaching electric discharge cut-off condition
Electricity.
Preferably, the battery health degree scaling method of power battery of the present invention, in the calibration strategy pattern
Discharge regime, from actually entering for the power demand of battery management system, the discharge configuration parameter and the charge-discharge machine
Minimum value is selected to carry out discharge operation in power;
In the charging stage of the calibration strategy pattern, join from the power demand of battery management system, the charge arrangement
Selection minimum value carries out charging operations in the real output of number and the charge-discharge machine.
In addition, the present invention also provides a kind of battery health degree scaling method of power battery, it is applied to include battery management system
The charging vehicle of system, the method includes:
T11, handshake operation is carried out after connecting charge-discharge machine;
T12, charge information and discharge information are sent;
T13, the parameter configuration fixed for battery health scale is sent, the parameter configuration includes charge arrangement
Parameter and discharge configuration parameter;
T14, calibration strategy pattern is sent;
T15, the calibration strategy pattern is executed, completes calibration.
Preferably, the battery health degree scaling method of power battery of the present invention is shaken hands in the step T11
Operation includes:
T111, judge whether to receive charge information message and discharge information message;
T112, if it is not, then continuing to message;
T113, confirmation message and electric discharge confirmation message if so, transmission is charged, into the identification stage of shaking hands.
Preferably, the battery health degree scaling method of power battery of the present invention, is demarcated described in the step T14
Strategy pattern is:Electric discharge-standing-charge mode;
The calibration strategy pattern is executed described in the step T15 includes:
T1511, the battery management system carry out discharge operation, stop electric discharge after reaching electric discharge cut-off condition;
T1512, the battery management system enter static condition;
T1513, the battery management system progress charging operations after preset time are stood, stopped after reaching charge cutoff condition
Only charge.
Preferably, the battery health degree scaling method of power battery of the present invention, is demarcated described in the step T14
Strategy pattern is:Charging-standing-discharge mode;
The calibration strategy pattern is executed described in the step T15 includes:
T1521, the battery management system carry out charging operations, stop charging after reaching charge cutoff condition;
T1522, the battery management system enter static condition;
T1523, the battery management system progress discharge operation after preset time is stood, stopped after reaching electric discharge cut-off condition
Only discharge.
Preferably, the battery health degree scaling method of power battery of the present invention, in the calibration strategy pattern
Discharge regime, from actually entering for the power demand of battery management system, the discharge configuration parameter and the charge-discharge machine
Minimum value is selected to carry out discharge operation in power;
In the charging stage of the calibration strategy pattern, join from the power demand of battery management system, the charge arrangement
Selection minimum value carries out charging operations in the real output of number and the charge-discharge machine.
The battery health degree scaling method for implementing a kind of power battery of the present invention, has the advantages that:This method
Applied to charge-discharge machine, including:S11, the auxiliary source of progress low pressure powers on after connecting charging vehicle;S12, handshake operation is carried out, and
Receive charge information and discharge information;S13, the parameter configuration fixed for battery health scale, parameter configuration are received
Including charge arrangement parameter and discharge configuration parameter;S14, it receives calibration strategy pattern and parameter is carried out according to calibration strategy pattern
Configuration;S15, calibration strategy pattern is executed, completes calibration.By applying the present invention, not carrying out returning factory's utilization to electric vehicle
In the case that special inspecting equipment is detected, using the charge and discharge process of power battery, safely and efficiently to power battery into
Row battery health scale is fixed.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the flow chart that a kind of battery health degree scaling method of power battery of the present invention is applied to charge-discharge machine;
Fig. 2 is a kind of battery health degree scaling method handshake operation flow chart of power battery of the present invention;
Fig. 3 is the first embodiment that a kind of battery health degree scaling method of power battery of the present invention is applied to charge-discharge machine
Flow chart;
Fig. 4 is the second embodiment that a kind of battery health degree scaling method of power battery of the present invention is applied to charge-discharge machine
Flow chart;
Fig. 5 is the flow chart that a kind of battery health degree scaling method of power battery of the present invention is applied to charging vehicle;
Fig. 6 is the first embodiment that a kind of battery health degree scaling method of power battery of the present invention is applied to charging vehicle
Flow chart;
Fig. 7 is the second embodiment that a kind of battery health degree scaling method of power battery of the present invention is applied to charging vehicle
Flow chart.
Specific implementation mode
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
The specific implementation mode of the present invention.
With reference to figure 1, the battery health degree scaling method of power battery of the invention is applied to charge-discharge machine, and method includes:
S11, the auxiliary source of progress low pressure powers on after connecting charging vehicle.When needing to demarcate power battery, by charge and discharge
Motor is connected to charging vehicle charge port so that charge-discharge machine is established with charging vehicle and connected.Charge-discharge machine is connected to charging vehicle
Include electrical connection and communication connection, wherein electrical connection is for charge and discharge between charge-discharge machine and electrokinetic cell system;Communication
Connection is for carrying out information exchange between charge-discharge machine and battery management system, and the information exchange is two-way, is entirely being marked
Multiple information exchange is carried out during fixed.After establishing connection, charge-discharge machine carries out the auxiliary source of low pressure and powers on.
S12, handshake operation is carried out, and receives charge information and discharge information.The cell tube of charge-discharge machine and charging vehicle
After reason system establishes communication connection, handshake operation is carried out, specific handshake procedure includes the following steps:
S121, charge information message and discharge information message are sent.Specifically, charge information message and discharge information message
Transmission sequence include following three kinds:
First sending method:Charge information message is first sent, it is rear to send discharge information message.
Second sending method:Discharge information message is first sent, it is rear to send charge information message.
Third sending method:Send charge information message and discharge information message simultaneously.
The above sending method can be selected as needed.
S122, judge whether to receive charging confirmation message and electric discharge confirmation message.
If S123, otherwise retransmitting message.If specifically, not receiving charging confirmation message, charging letter is retransmitted
Cease message.If not receiving electric discharge confirmation message, discharge information message is retransmitted.If charging confirmation message and electric discharge confirmation report
Wen Douwei is received, then sends charge information message and discharge information message.Alternatively, if not receiving charging confirmation message or not
Electric discharge confirmation message is received, then sends charge information message and discharge information message.
If S124, receiving charging confirmation message and electric discharge confirmation message, enters and shake hands the identification stage.
With reference to figure 2, first to send charge information message, the rear discharge information message that sends illustrates for example, other realities
The process of applying can refer to implementation, and step S2 includes:
SF121, charge information message is sent.
SF122, discharge information message is sent.
SF123, judge whether to receive charging confirmation message, be thened follow the steps if not receiving charging confirmation message
SF121.Alternatively, it if not receiving charging confirmation message yet more than default message receiving time, is directly entered to shake hands and distinguish
The knowledge stage.Such as do not receive charging confirmation message in 5 seconds always, then it is directly entered the identification stage of shaking hands.If in default message
Charging confirmation message is received in receiving time thens follow the steps SF124.
SF124, judge whether to receive electric discharge confirmation message, be thened follow the steps if not receiving electric discharge confirmation message
SF121, or execute step SF122.Alternatively, if not receiving electric discharge confirmation message yet more than default message receiving time,
Then it is directly entered the identification stage of shaking hands.Such as do not receive electric discharge confirmation message in 5 seconds always, then it is directly entered identification rank of shaking hands
Section.Enter if receiving electric discharge confirmation message and shakes hands the identification stage.
It will be understood by those skilled in the art that the sequencing that charge information message and discharge information message are sent is can root
According to being set;Similarly, judge whether to receive charging confirmation message and judge whether to receive electric discharge confirmation message
Sequencing is also to be set as needed.
Handshake operation is carried out in the battery management system of charge-discharge machine and charging vehicle simultaneously, charge-discharge machine and charging vehicle
Battery management system can realize the interaction of charge information and discharge information, wherein the charge information of charge-discharge machine and electric discharge are believed
Breath includes but not limited to maximum output voltage, minimum output voltage, highest charging current, minimum charging current etc., i.e., by charge and discharge
The attribute information of motor is sent to battery management system.Synchronous, the charge information and discharge information of power battery include but not
It is limited to maximum charging voltage, minimum charging voltage, highest discharge voltage, minimum discharge voltage, highest charging current, minimum charging
The attribute information of power battery is sent to charge-discharge machine by electric current etc..Pass through the battery management of charge-discharge machine and charging vehicle
The attribute information of system interacts, it is ensured that the safety of follow-up charge and discharge process.
Further, charge-discharge machine determines operation acknowledgement with charging vehicle progress battery health scale.
S13, the parameter configuration fixed for battery health scale is received, parameter configuration includes charge arrangement parameter
With discharge configuration parameter.Battery management system send parameter configuration to charge-discharge machine, in the charging stage, charge-discharge machine according to
Charge arrangement parameter charges to power battery;In discharge regime, charge-discharge machine is according to discharge configuration parameter to power battery
It discharges.Traditional charge-discharge machine only charges to power battery, and the present invention is to be demarcated to power battery, not only
It is charged to power battery using charge-discharge machine, is also discharged power battery using charge-discharge machine, to pass through charge and discharge
Electricity demarcates power battery.
S14, it receives calibration strategy pattern and parameter configuration is carried out according to calibration strategy pattern.Battery management system and charge and discharge
Motor formulates calibration strategy pattern by interaction, and calibration strategy pattern is sent to charge and discharge by battery management system after the completion of formulation
Machine.
S15, calibration strategy pattern is executed, completes calibration.The present invention provides two kinds of calibration strategy patterns, by both
The course of work of calibration strategy pattern illustrates technical scheme of the present invention.Both calibration strategy patterns are respectively:Electric discharge-quiet
Set-charge mode, charging-standing-discharge mode.It illustrates individually below.
First embodiment:Calibration strategy pattern is electric discharge-standing-charge mode.
Executing calibration strategy pattern with reference to figure 3, in step S15 includes:
S1511, charge-discharge machine carry out discharge operation, stop electric discharge after reaching electric discharge cut-off condition.Charge-discharge machine pair first
Power battery carries out discharge operation, and monitors the electric discharge that whether reaches interacted from battery management system BMS in real time and end item
Part information stops electric discharge after reaching electric discharge cut-off condition.
S1512, charge-discharge machine enter static condition, stop power output.After stopping electric discharge, charge-discharge machine and battery management
System enters static condition.In the stage of standing, charge-discharge machine is without power output, and the not lower electricity in the auxiliary source of charge-discharge machine, equipment is not
It is stopped, and charge-discharge machine and battery management system carry out status information interaction, which includes but not limited to dynamic
Power battery total voltage, power battery monomer battery voltage, power battery single battery ceiling voltage, power battery single battery are most
Low-voltage, temperature of powered cell, battery dump energy percentage (State Of Charge, SOC) etc., are believed by interaction mode
Breath makes charge-discharge machine and battery management system understand the state of other side, and can determine whether the status information of other side meets the requirements.
S1513, charge-discharge machine progress charging operations after preset time are stood, stops charging after reaching charge cutoff condition.
After switching to the charging stage by the standing stage, the main loop of power circuit of charge-discharge machine starts, in charging process, charge-discharge machine and battery
Management system still carries out status information real-time, interactive, and status information at this time further includes current charging voltage, current charging electricity
Stream, output power etc..
Second embodiment:Calibration strategy pattern is charging-standing-discharge mode.
Executing calibration strategy pattern with reference to figure 4, in step S15 includes:
S1521, charge-discharge machine carry out charging operations, stop charging after reaching charge cutoff condition.Charge-discharge machine pair first
Power battery carry out charging operations, and monitor in real time interacted from battery management system BMS whether reach charge cutoff item
Part information stops charging after reaching charge cutoff condition.
S1522, charge-discharge machine enter static condition, stop power output.After stopping charging, charge-discharge machine and battery management
System enters static condition.In the stage of standing, charge-discharge machine is without power output, and the not lower electricity in the auxiliary source of charge-discharge machine, equipment is not
It is stopped, and charge-discharge machine and battery management system carry out status information interaction, which includes but not limited to dynamic
Power battery total voltage, power battery monomer battery voltage, power battery single battery ceiling voltage, power battery single battery are most
Low-voltage, temperature of powered cell, battery dump energy percentage (State Of Charge, SOC) etc., are believed by interaction mode
Breath makes charge-discharge machine and battery management system understand the state of other side, and can determine whether the status information of other side meets the requirements.
S1523, charge-discharge machine progress discharge operation after preset time is stood, stops electric discharge after reaching electric discharge cut-off condition.
After switching to discharge regime by the standing stage, the main loop of power circuit of charge-discharge machine starts, in discharge process, charge-discharge machine and battery
Management system still carries out status information real-time, interactive, and status information at this time further includes present discharge voltage, present discharge electricity
Stream, output power etc..
Preferably, in the above two embodiments, in the discharge regime of calibration strategy pattern, from the work(of battery management system
Rate demand, discharge configuration parameter and actually entering in power for charge-discharge machine select minimum value to carry out discharge operation.It is demarcating
It is the charging stage of strategy pattern, defeated from the reality of the power demand of battery management system, charge arrangement parameter and charge-discharge machine
Going out in power selects minimum value to carry out charging operations.
After completing calibration, charge-discharge machine can be out of service by software or out of service using physical switch;Battery management
System can be out of service by software or out of service using physical switch.Preferably, in calibration process, pass through fault detect
Unit detects failure, once detecting failure, then stops the operation of charge-discharge machine and battery management system, ensures equipment peace
Entirely.
Alternatively, after completing calibration, calibration result can be shown by display screen, or demarcate by audio player plays
As a result, to inform user.
With reference to figure 5, the present invention also provides a kind of battery health degree scaling methods of power battery, are applied to include cell tube
The charging vehicle of reason system, method include:
T11, handshake operation is carried out after connecting charge-discharge machine.
Specifically, when needing to demarcate power battery, charge-discharge machine is connected to charging vehicle so that charge-discharge machine
It establishes and connects with charging vehicle.The connection that charge-discharge machine is connected to charging vehicle includes electrical connection and communication connection, wherein is electrically connected
It connects for the charge and discharge between charge-discharge machine and electrokinetic cell system;Communication connection for charge-discharge machine and battery management system it
Between carry out information exchange, and the information exchange is two-way.After establishing connection, charge-discharge machine carries out the auxiliary source of low pressure and powers on.
After the charge-discharge machine of charge-discharge machine and the battery management system of charging vehicle establish communication connection, the behaviour that shakes hands is carried out
Make, specific handshake procedure includes the following steps:
T111, judge whether to receive charge information message and discharge information message.Specifically, charge information can be received first
Message is followed by folding and unfolding power information message;Or discharge information message is first received, it is rear to receive charge information message.Or it receives fill simultaneously
Power information message and discharge information message.The above reception mode can be selected as needed.
T112, if it is not, then continuing to message.If not receiving charge information message, charge information message is continued to;
If not receiving discharge information message, discharge information message is continued to.If not receiving charge information message and discharge information report
Text then continues to charge information message and discharge information message.
If T113, receiving charge information message and discharge information message, sends charging confirmation message and electric discharge confirms
Message, into the identification stage of shaking hands.
With reference to figure 2, first to receive charge information message, it is followed by folding and unfolding power information message and is illustrated for example, other realities
The process of applying can refer to implementation.Step T11 includes:
TF111, judge whether to receive charge information message, if not receiving charge information message, continue to report
Text.Alternatively, if not receiving charge information message yet more than default message receiving time, it is directly entered identification rank of shaking hands
Section.Such as do not receive charge information message in 5 seconds always, then it is directly entered the identification stage of shaking hands.
If TF112, receiving charge information message, charging confirmation message is sent.
TF113, judge whether to receive discharge information message, if not receiving discharge information message, continue to report
Text.Alternatively, if not receiving discharge information message yet more than default message receiving time, it is directly entered identification rank of shaking hands
Section.Such as do not receive discharge information message in 5 seconds always, then it is directly entered the identification stage of shaking hands.
If TF114, receiving discharge information message, electric discharge confirmation message is sent, into the identification stage of shaking hands.
It will be understood by those skilled in the art that the sequencing that charge information message and discharge information message receive is can root
According to being set;Similarly, judge whether to receive charge information message and judge whether to receive discharge information message
Sequencing is also to be set as needed.
T12, charge information and discharge information are sent.In the charge-discharge machine of charge-discharge machine and the battery management system of charging vehicle
System carries out handshake operation simultaneously, and the battery management system of charge-discharge machine and charging vehicle can realize charge information and discharge information
Interaction, wherein the charge information and discharge information of charge-discharge machine include but not limited to maximum output voltage, minimum output voltage,
Highest charging current, minimum charging current etc., i.e., be sent to battery management system by the attribute information of charge-discharge machine.Synchronous,
The charge information and discharge information of power battery include but not limited to maximum charging voltage, minimum charging voltage, highest electric discharge electricity
Pressure, minimum discharge voltage, highest charging current, minimum charging current etc., i.e., be sent to charge and discharge by the attribute information of power battery
Motor.It is interacted with the attribute information of the battery management system of charging vehicle by charge-discharge machine, it is ensured that follow-up charge and discharge process
Safety.
Further, charge-discharge machine determines operation acknowledgement with charging vehicle progress battery health scale.
T13, the parameter configuration fixed for battery health scale is sent, parameter configuration includes charge arrangement parameter
With discharge configuration parameter.Battery management system send parameter configuration to charge-discharge machine, in the charging stage, charge-discharge machine according to
Charge arrangement parameter charges to power battery;In discharge regime, charge-discharge machine is according to discharge configuration parameter to power battery
It discharges.Traditional charge-discharge machine only charges to power battery, and the present invention is to be demarcated to power battery, not only
It is charged to power battery using charge-discharge machine, is also discharged power battery using charge-discharge machine, to pass through charge and discharge
Electricity demarcates power battery.
T14, calibration strategy pattern is sent.Battery management system and charge-discharge machine formulate calibration strategy pattern by interaction,
Calibration strategy pattern is sent to charge-discharge machine by battery management system after the completion of formulation.
T15, calibration strategy pattern is executed, completes calibration.The present invention provides two kinds of calibration strategy patterns, by both
The course of work of calibration strategy pattern illustrates technical scheme of the present invention.Both calibration strategy patterns are respectively:Electric discharge-quiet
Set-charge mode, charging-standing-discharge mode.It illustrates individually below.
First embodiment:Calibration strategy pattern is electric discharge-standing-charge mode.
Executing calibration strategy pattern with reference to figure 6, in step T15 includes:
T1511, battery management system carry out discharge operation, stop electric discharge after reaching electric discharge cut-off condition.Cell tube first
Reason system carries out discharge operation to power battery, and whether monitoring current state reaches electric discharge cut-off condition in real time, is put when reaching
It is interacted with charge-discharge machine after electric cut-off condition, charge-discharge machine stops discharging according to interactive information.
T1512, battery management system enter static condition.After stopping electric discharge, charge-discharge machine and battery management system enter
Static condition.In the stage of standing, charge-discharge machine is not stopped without power output, the not lower electricity in the auxiliary source of charge-discharge machine, equipment,
And charge-discharge machine and battery management system carry out status information interaction, which includes but not limited to that power battery is always electric
Pressure, power battery single battery ceiling voltage, power battery single battery minimum voltage, is moved power battery monomer battery voltage
Power battery temperature, battery dump energy percentage (State Of Charge, SOC) etc., by interaction mode information, make charge and discharge
Motor and battery management system understand the state of other side, and can determine whether the status information of other side meets the requirements.
T1513, battery management system progress charging operations after preset time are stood, stops filling after reaching charge cutoff condition
Electricity.After switching to the charging stage by the standing stage, the main loop of power circuit of charge-discharge machine starts, in charging process, charge-discharge machine and
Battery management system still carries out status information real-time, interactive, and status information at this time further includes current charging voltage, currently fills
Electric current, output power etc..
Second embodiment:Calibration strategy pattern is charging-standing-discharge mode.
Executing calibration strategy pattern with reference to figure 7, in step T15 includes:
T1521, battery management system carry out charging operations, stop charging after reaching charge cutoff condition.Cell tube first
Reason system carries out charging operations to power battery, and whether monitoring current state reaches charge cutoff condition in real time, is filled when reaching
It is interacted with charge-discharge machine after electric cut-off condition, charge-discharge machine stops charging according to interactive information.
T1522, battery management system enter static condition.After stopping charging, charge-discharge machine and battery management system enter
Static condition.In the stage of standing, charge-discharge machine is not stopped without power output, the not lower electricity in the auxiliary source of charge-discharge machine, equipment,
And charge-discharge machine and battery management system carry out status information interaction, which includes but not limited to that power battery is always electric
Pressure, power battery single battery ceiling voltage, power battery single battery minimum voltage, is moved power battery monomer battery voltage
Power battery temperature, battery dump energy percentage (State Of Charge, SOC) etc., by interaction mode information, make charge and discharge
Motor and battery management system understand the state of other side, and can determine whether the status information of other side meets the requirements.
T1523, battery management system progress discharge operation after preset time is stood, stops putting after reaching electric discharge cut-off condition
Electricity.After switching to discharge regime by the standing stage, the main loop of power circuit of charge-discharge machine starts, in discharge process, charge-discharge machine and
Battery management system still carries out status information real-time, interactive, and status information at this time further includes present discharge voltage, currently puts
Electric current, output power etc..
Preferably, in the above two embodiments, in the discharge regime of calibration strategy pattern, from the work(of battery management system
Rate demand, discharge configuration parameter and actually entering in power for charge-discharge machine select minimum value to carry out discharge operation;It is demarcating
It is the charging stage of strategy pattern, defeated from the reality of the power demand of battery management system, charge arrangement parameter and charge-discharge machine
Going out in power selects minimum value to carry out charging operations.
After completing calibration, charge-discharge machine can be out of service by software or out of service using physical switch;Battery management
System can be out of service by software or out of service using physical switch.Preferably, in calibration process, pass through fault detect
Unit detects failure, once detecting failure, then stops the operation of charge-discharge machine and battery management system, ensures equipment peace
Entirely.
Alternatively, after completing calibration, calibration result can be shown by display screen, or demarcate by audio player plays
As a result, to inform user.
Below by way of a specific test process, invention is further explained.
Health degree battery health scale is carried out to the power battery of the electric vehicle of a certain operation 1 year to determine, the vehicle is specified
Carried charge is 41.4kWh, rated capacity 120Ah.Specific calibration process is as follows:
The pipette tips of charge-discharge machine are connect with vehicle gun platform, complete the two physical connection.
The auxiliary source of charge-discharge machine powers on.
Charge-discharge machine sends battery health scale to battery management system and determines handshake message, and battery management system is according to receiving
Handshake message reply whether charge-discharge machine confirms that carry out battery health scale fixed, reply after confirming, battery health scale constant current
Journey starts to start.
Charge-discharge machine and battery management system carry out parameter to battery system and charge-discharge machine power output and input capability
Matching.The stage needs the charge parameter to battery, discharge parameter to carry out parameter matching, and configuration parameter is stored,
To wait for that the later stage calls.
The charge and discharge mode identification method (i.e. calibration strategy pattern) confirmed according to charge-discharge machine and battery management system
Carry out charge and discharge mode selection.
Calibration sequence:Electric discharge-standing-charging.
Discharge regime:Battery to be calibrated is discharged with 0.1-1C, after being discharged to regulation cut-off condition, such as power battery
Monomer minimum voltage reaches 2.5 ± 0.5V;
The standing stage:Charge-discharge machine and battery management system are transferred to static condition, when standing a length of 10-60min, fill at this time
Electrical Discharge Machine is not stopped without main power output, the not lower electricity in the auxiliary source of charge-discharge machine, i.e. equipment, charge-discharge machine and battery management
System carries out information exchange in real time;
Charging stage:Charging stage is switched to by the standing stage, charge and discharge owner's loop of power circuit starts, charge-discharge machine and battery
Management system carries out real-time information interaction.
In the discharge regime of calibration strategy pattern, from the power demand of battery management system, discharge configuration parameter, Yi Jichong
Actually entering in power for Electrical Discharge Machine selects minimum value to carry out discharge operation;In the charging stage of calibration strategy pattern, from battery
Selection minimum value is filled in the real output of the power demand of management system, charge arrangement parameter and charge-discharge machine
It is electrically operated.
At the end of calibration, after Electrical Discharge Machine is to power battery charging to regulation cut-off condition, charge-discharge machine stops power output,
Equipment shows battery health degree calibration result.
By applying the present invention, not carrying out returning the case where factory is detected using special inspecting equipment to electric vehicle
Under, using the charge and discharge process of power battery, it is fixed that battery health scale safely and efficiently is carried out to power battery.
Above example only technical concepts and features to illustrate the invention, its object is to allow person skilled in the art
Scholar can understand present disclosure and implement accordingly, can not limit the scope of the invention.It is all to be wanted with right of the present invention
The equivalent changes and modifications that range is done are sought, the covering scope of the claims in the present invention should all be belonged to.
Claims (10)
1. a kind of battery health degree scaling method of power battery is applied to charge-discharge machine, which is characterized in that the method packet
It includes:
S11, the auxiliary source of progress low pressure powers on after connecting charging vehicle;
S12, handshake operation is carried out, and receives charge information and discharge information;
S13, the parameter configuration fixed for battery health scale is received, the parameter configuration includes charge arrangement parameter
With discharge configuration parameter;
S14, it receives calibration strategy pattern and parameter configuration is carried out according to the calibration strategy pattern;
S15, the calibration strategy pattern is executed, completes calibration.
2. the battery health degree scaling method of power battery according to claim 1, which is characterized in that the step S12
Middle progress handshake operation includes:
S121, charge information message and discharge information message are sent;
S122, judge whether to receive charging confirmation message and electric discharge confirmation message;
If S123, otherwise retransmitting message;
If S124, then entering and shaking hands the identification stage.
3. the battery health degree scaling method of power battery according to claim 1, which is characterized in that the step S14
Described in calibration strategy pattern be:Electric discharge-standing-charge mode;
The calibration strategy pattern is executed described in the step S15 includes:
S1511, the charge-discharge machine carry out discharge operation, stop electric discharge after reaching electric discharge cut-off condition;
S1512, the charge-discharge machine enter static condition, stop power output;
S1513, the charge-discharge machine progress charging operations after preset time are stood, stops charging after reaching charge cutoff condition.
4. the battery health degree scaling method of power battery according to claim 1, which is characterized in that the step S14
Described in calibration strategy pattern be:Charging-standing-discharge mode;
The calibration strategy pattern is executed described in the step S15 includes:
S1521, the charge-discharge machine carry out charging operations, stop charging after reaching charge cutoff condition;
S1522, the charge-discharge machine enter static condition, stop power output;
S1523, the charge-discharge machine progress discharge operation after preset time is stood, stops electric discharge after reaching electric discharge cut-off condition.
5. the battery health degree scaling method of power battery according to claim 3 or 4, which is characterized in that in the mark
The discharge regime for determining strategy pattern, from the power demand of battery management system, the discharge configuration parameter and the charge and discharge
Actually entering in power for machine selects minimum value to carry out discharge operation;
In the charging stage of the calibration strategy pattern, from the power demand of battery management system, the charge arrangement parameter, with
And minimum value is selected to carry out charging operations in the real output of the charge-discharge machine.
6. a kind of battery health degree scaling method of power battery, special applied to the charging vehicle for including battery management system
Sign is, the method includes:
T11, handshake operation is carried out after connecting charge-discharge machine;
T12, charge information and discharge information are sent;
T13, the parameter configuration fixed for battery health scale is sent, the parameter configuration includes charge arrangement parameter
With discharge configuration parameter;
T14, calibration strategy pattern is sent;
T15, the calibration strategy pattern is executed, completes calibration.
7. the battery health degree scaling method of power battery according to claim 6, which is characterized in that the step T11
Middle progress handshake operation includes:
T111, judge whether to receive charge information message and discharge information message;
T112, if it is not, then continuing to message;
T113, confirmation message and electric discharge confirmation message if so, transmission is charged, into the identification stage of shaking hands.
8. the battery health degree scaling method of power battery according to claim 6, which is characterized in that the step T14
Described in calibration strategy pattern be:Electric discharge-standing-charge mode;
The calibration strategy pattern is executed described in the step T15 includes:
T1511, the battery management system carry out discharge operation, stop electric discharge after reaching electric discharge cut-off condition;
T1512, the battery management system enter static condition;
T1513, the battery management system progress charging operations after preset time are stood, stops filling after reaching charge cutoff condition
Electricity.
9. the battery health degree scaling method of power battery according to claim 6, which is characterized in that the step T14
Described in calibration strategy pattern be:Charging-standing-discharge mode;
The calibration strategy pattern is executed described in the step T15 includes:
T1521, the battery management system carry out charging operations, stop charging after reaching charge cutoff condition;
T1522, the battery management system enter static condition;
T1523, the battery management system progress discharge operation after preset time is stood, stops putting after reaching electric discharge cut-off condition
Electricity.
10. the battery health degree scaling method of power battery according to claim 8 or claim 9, which is characterized in that in the mark
The discharge regime for determining strategy pattern, from the power demand of battery management system, the discharge configuration parameter and the charge and discharge
Actually entering in power for machine selects minimum value to carry out discharge operation;
In the charging stage of the calibration strategy pattern, from the power demand of battery management system, the charge arrangement parameter, with
And minimum value is selected to carry out charging operations in the real output of the charge-discharge machine.
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