CN108081994A - Power supply management method and system - Google Patents
Power supply management method and system Download PDFInfo
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- CN108081994A CN108081994A CN201711401319.5A CN201711401319A CN108081994A CN 108081994 A CN108081994 A CN 108081994A CN 201711401319 A CN201711401319 A CN 201711401319A CN 108081994 A CN108081994 A CN 108081994A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/22—Balancing the charge of battery modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of power supply management method and system, the described method includes：Each cell system voltage is monitored in real time, main system of the battery system of voltage value maximum as electric power system is chosen, and main system is controlled to provide electric energy for drive system；By other battery systems and the voltage difference between main system respectively compared with first voltage difference threshold value；It when being more than first voltage difference threshold value there are the corresponding voltage difference of battery system, is charged using main system to the battery system, and stops charging when the voltage of the battery system is consistent with main system voltage；The electric current flowed through on the voltage balancing module being connected to the battery system for completing to charge is monitored, and when the current value monitored is more than predetermined current threshold, the battery system is controlled to provide electric energy for drive system.The method can ensure that electric power system is in the power supply state that cruising ability is strong and discharge power is big, improve the driving experience of electric vehicle driver.
Description
Technical field
The present invention relates to technical field of new energy, in particular to a kind of power supply management method and system.
Background technology
With the continuous development of science and technology, the continuous enhancing of people's environmental consciousness, New-energy electric vehicle technology is more
Ground is taken seriously, and for New-energy electric vehicle technology, how one kind is provided and can be ensured that electric power system power supply continuation of the journey energy
The problem of power supply management scheme that power is strong and discharge power is big is one particularly important.
Presently, existing power supply management scheme is to use the mode of multiple battery system switching power supplies electronic to ensure
Automobile can have stronger cruising ability.This power supply management scheme is supplied in power supply only with single battery system
Electricity can not provide stronger discharge power, influence the driving experience of driver.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, it is an object of the invention to provide a kind of power supply management method and it is
System, the power supply management method can ensure that electric power system is in the power supply state that cruising ability is strong and discharge power is big, improve electricity
The driving experience of electrical automobile driver.
For method, preferred embodiments of the present invention provide a kind of power supply management method, and the method is used for electronic
The electric power system of automobile is managed, and the electric power system and the drive system of the electric vehicle are electrically connected, the power supply
System includes multiple battery systems parallel with one another, and the cell system in series in every parallel branch has electric discharge relay and voltage
Balance module, wherein the electric discharge relay is in parallel with the voltage balancing module, the described method includes：
Each cell system voltage is monitored in real time, chooses the battery system of voltage value maximum as the electric power system
Main system, and the main system is controlled to provide electric energy for the drive system；
By the voltage difference between other battery systems and the main system respectively compared with first voltage difference threshold value；
When being more than first voltage difference threshold value there are the corresponding voltage difference of battery system, using the main system to described
The battery system that voltage difference is more than first voltage difference threshold value charges, and the voltage in the battery system and the main system
Stop charging when voltage is consistent；
The electric current flowed through on the voltage balancing module being connected to the battery system for completing to charge is monitored, and is being supervised
When the current value measured is more than predetermined current threshold, the battery system for completing to charge is controlled to provide electricity for the drive system
Energy.This method is used as main system by choosing the battery system of voltage maximum in electric power system, and using the main system as voltage
Other battery systems that difference is more than first voltage difference threshold value charge, and the battery system of charging complete is enable to coordinate the master
System provides electric energy for electric vehicle, and the multiple battery systems allowed in the electric power system are carried out at the same time power supply, so that it is guaranteed that for
Electric system is in the power supply state that cruising ability is strong and discharge power is big, improves the driving experience of electric vehicle driver.
For system, preferred embodiments of the present invention provide a kind of power supply management system, and the system is used for electronic
The electric power system of automobile is managed, and the electric power system and the drive system of the electric vehicle are electrically connected, the power supply
System includes multiple battery systems parallel with one another, and the cell system in series in every parallel branch has electric discharge relay and voltage
Balance module, wherein the electric discharge relay is in parallel with the voltage balancing module, the system comprises：
System chooses module, for being monitored in real time to each cell system voltage, chooses the battery system of voltage value maximum
The main system united as the electric power system, and the main system is controlled to provide electric energy for the drive system；
Voltage difference comparison module, for by the voltage difference between other battery systems and the main system respectively with first
Voltage difference threshold value is compared；
Charge control module, for when being more than first voltage difference threshold value there are the corresponding voltage difference of battery system, adopting
The battery system for being more than first voltage difference threshold value to the voltage difference with the main system charges, and in the battery system
Voltage and the main system voltage stop charging when being consistent；
The system chooses module, is additionally operable to the voltage balancing module upstream being connected to the battery system for completing to charge
The electric current of warp is monitored, and when the current value monitored is more than predetermined current threshold, the battery to charge is completed in control
System provides electric energy for the drive system.
In terms of existing technologies, the power supply management method and system that preferred embodiments of the present invention provide have following
Advantageous effect：The power supply management method can ensure that electric power system is in the power supply state that cruising ability is strong and discharge power is big,
Improve the driving experience of electric vehicle driver.The method is described for being managed to the electric power system of electric vehicle
Electric power system and the drive system of the electric vehicle are electrically connected, and the electric power system includes multiple battery systems parallel with one another
It unites, the cell system in series in every parallel branch has electric discharge relay and voltage balancing module, wherein the electric discharge relay
It is in parallel with the voltage balancing module.First, the method chooses voltage by being monitored in real time to each cell system voltage
It is worth main system of the maximum battery system as the electric power system, and the main system is controlled to provide electricity for the drive system
Energy；Then, the method by the voltage difference between other battery systems and the main system respectively with first voltage difference threshold value
It is compared；Then, the method there are the corresponding voltage difference of battery system when being more than first voltage difference threshold value, using institute
Main system is stated to charge to battery system of the voltage difference more than first voltage difference threshold value, and in the electricity of the battery system
Stop charging when pressure is consistent with the main system voltage；Finally, the method passes through the battery system to completing to charge
The electric current flowed through on the connected voltage balancing module of system is monitored, and is more than predetermined current threshold in the current value monitored
When, the battery system for completing to charge is controlled to provide electric energy for the drive system, it is more in the electric power system so as to allow
A battery system can be powered simultaneously, it is ensured that the electric power system is in the power supply shape that cruising ability is strong and discharge power is big
State, to improve the driving experience of electric vehicle driver.
For the above objects, features and advantages of the present invention is enable to be clearer and more comprehensible, present pre-ferred embodiments cited below particularly,
And attached drawing appended by coordinating, it is described in detail below.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope of the invention as claimed, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is the block diagram for the electric vehicle that preferred embodiments of the present invention provide.
Fig. 2 is a kind of flow diagram for the power supply management method that preferred embodiments of the present invention provide.
Fig. 3 is the flow diagram of the sub-step that step S230 includes in Fig. 2.
Fig. 4 is another flow diagram for the power supply management method that preferred embodiments of the present invention provide.
Fig. 5 is the flow diagram of the sub-step that step S250 includes in Fig. 4.
Fig. 6 is a kind of block diagram of the power supply management system shown in Fig. 1 that preferred embodiments of the present invention provide.
Fig. 7 is another box signal of the power supply management system shown in Fig. 1 that preferred embodiments of the present invention provide
Figure.
Icon：10- electric vehicles；100- electric power systems；110- battery systems；120- voltage balancing modules；130- discharges
Relay；200- drive systems；300- power supply management systems；400- vehicle control systems；310- systems choose module；320- electricity
Pressure difference comparison module；330- charge control modules；340- power sending modules.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention implementation being usually described and illustrated herein in the accompanying drawings
The component of example can configure to arrange and design with a variety of.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without creative efforts belong to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it is necessary to which explanation, unless otherwise clearly defined and limited, term " setting " " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
The concrete meaning of language in the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and cannot manage
It solves to indicate or imply relative importance.
Below in conjunction with the accompanying drawings, elaborate to some embodiments of the present invention.In the case where there is no conflict, it is following
Feature in embodiment and embodiment can be mutually combined.
Fig. 1 is refer to, is the block diagram for the electric vehicle 10 that preferred embodiments of the present invention provide.Of the invention real
It applies in example, the electric vehicle 10 includes electric power system 100, drive system 200 and power supply management system 300, the power supply system
System 100 is electrically connected with the drive system 200, and the electric power system 100 is used to provide electric energy to the drive system 200,
So that 200 normal operation of drive system, the power supply management system 300 is used to be managed the electric power system 100,
So that the electric power system 100 is in the power supply state that cruising ability is strong and discharge power is big, so as to improve the electric vehicle
The driving experience of 10 driver.
In the present embodiment, the electric power system 100 includes multiple battery systems 110 parallel with one another, each battery system
System 110 can include multiple single batteries, and the battery system 110 is the drive system by multiple single batteries
200 provide electric energy.Battery system 110 in wherein described 100 corresponding every parallel branch of electric power system is in series with electric discharge
Relay 130 and voltage balancing module 120, the electric discharge relay 130 and the voltage balancing module 120 are parallel with one another.
In the present embodiment, if the electric discharge relay 130 in a 110 place parallel branch of battery system is closed, the battery system
110 will provide electric energy to the drive system 200；The voltage balancing module 120 is used to make the battery system being serially connected with it
The voltage of system 110 is kept in balance in entire electric power system 100.
Fig. 2 is refer to, is a kind of flow diagram for the power supply management method that preferred embodiments of the present invention provide.At this
In inventive embodiments, the power supply management method makes institute for being managed to the electric power system 100 in the electric vehicle 10
The multiple battery systems 110 stated in electric power system 100 can be powered simultaneously, it is ensured that the electric power system 100 is in power supply
The state that cruising ability is strong and discharge power is big, to improve the driving experience of the driver of the electric vehicle 10.It is right below
The idiographic flow and step of power supply management method shown in FIG. 1 are described in detail.
In embodiments of the present invention, the power supply management method comprises the following steps：
Step S210 monitors each 110 voltage of battery system in real time, chooses the battery system 110 of voltage value maximum
As the main system of electric power system 100, and the main system is controlled to provide electric energy for drive system 200.
In the present embodiment, the method by monitoring the voltage of each battery system 110 in the electric power system 100 in real time
Mode, obtain the voltage value of each battery system 110 in the current situation, and voltage value chosen most from each battery system 110
Main system of the big battery system 110 as the electric power system 100, using by the main system as the drive system 200
Electric energy is provided.
Optionally, the described the step of main system is controlled to provide electric energy for drive system 200, including：
Voltage balancing module 120 where controlling the main system in parallel branch is out of service, and controls the principal series
Electric discharge relay 130 where system in parallel branch is closed, so that the main system is electrically connected to the electric power system 100
Drive system 200 provide electric energy.
Step S220 is poor with first voltage respectively by the voltage difference between other battery systems 110 and the main system
Threshold value is compared.
In the present embodiment, the first voltage difference threshold value is used for the principal series by other battery systems 110 and selection
Difference between uniting on voltage is divided into two classes, if there are the voltage difference between battery system 110 and the main system is small
When the first voltage difference threshold, it can determine that the battery system 110 belongs to the one kind that need not be charged；If there are battery systems
When voltage difference between system 110 and the main system is more than the first voltage difference threshold, the battery system 110 can determine that
Belong to one kind that needs charge.Wherein, the first voltage difference threshold can be 10V or 15V, can also be
12V, numerical value can carry out different settings according to actual demand.
Optionally, the voltage difference by between other battery systems 110 and the main system respectively with first voltage
The step of poor threshold value is compared, including：
Other battery systems 110 and the main system are calculated according to the voltage value of each battery system 110 monitored
Between voltage difference, and each 110 corresponding voltage difference of battery system is compared respectively with the first voltage difference threshold value
Compared with.
Step S230, when being more than first voltage difference threshold value there are 110 corresponding voltage difference of battery system, using described
The battery system 110 that main system is more than the voltage difference first voltage difference threshold value charges, and in the battery system 110
Voltage and the main system voltage stop charging when being consistent.
In the present embodiment, if there are corresponding voltage difference be more than first voltage difference threshold value battery system 110 when, institute
It states method the battery system 110 for being more than the voltage difference by the main system first voltage difference threshold value charges,
And stop charging when the voltage of the battery system 110 and the voltage of the main system are consistent.
Optionally, the battery system for being more than first voltage difference threshold value to the voltage difference using the main system
110 the step of being charged, including：
It controls with the voltage difference more than the electric voltage equalization mould that the battery system 110 of the first voltage difference threshold value is connected
Block 120 obtains electric energy at the main system, and is charged with the electric energy of acquisition to the battery system 110.
Fig. 3 is refer to, is the flow diagram of the sub-step that step S230 includes in Fig. 2.In the present embodiment, the step
The voltage in the battery system 110 in rapid S230 stops to wrap the step of charging when being consistent with the main system voltage
Enclosed tool step S231 and sub-step S232：
Sub-step S231, according to the battery system 110 in the voltage of the main system real-time monitored and charging
Voltage, the voltage difference when battery system 110 currently charges is calculated, and by the voltage difference and second voltage
Poor threshold value is compared.
In the present embodiment, the second voltage difference threshold value is less than the first voltage difference threshold value, and it is right that the method passes through
The voltage of the battery system 110 in charging and the voltage of the main system are monitored in real time, the electricity in being charged
Voltage difference of the cell system 110 under current charging situation, and by the voltage difference compared with second voltage difference threshold value,
To judge whether the voltage of the battery system 110 is consistent with the voltage of the main system.
Sub-step S232 if the voltage difference is less than the second voltage difference threshold value, controls 110 phase of battery system
Voltage balancing module 120 even stops obtaining electric energy at the main system, to stop filling the battery system 110
Electricity.
In the present embodiment, if the battery system 110 in the charging corresponding voltage difference in current charge is less than
During the second voltage difference threshold value, the voltage and the voltage of the main system that can determine that the battery system 110 are consistent, then may be used
By the way that the voltage balancing module 120 being connected with the battery system 110 is controlled to stop obtaining the side of electric energy at from the main system
Formula stops charging to the battery system 110.
Step S240, the electric current flowed through on the voltage balancing module 120 connected to the battery system 110 completing to charge
It is monitored, and when the current value monitored is more than predetermined current threshold, the battery system 110 that control is completed to charge is
The drive system 200 provides electric energy.
In the present embodiment, the main system is while charging to the battery system 110 that charges of needs, also to
The drive system 200 provides electric energy, and the main system remains on when completing and charging and can provide electricity to the drive system 200
Can, the voltage in the main system will progressively reduce at this time.When the voltage in the main system is less than the electricity for completing to charge
During the voltage of cell system 110, the battery system 110 for completing to charge will be based on the coupled voltage balancing module
120 discharge.The method is upper by the connected voltage balancing module 120 of the battery system 110 to completing to charge
The electric current of warp is monitored, and judges whether the electric power system 100 needs the battery system 110 for completing to charge also to be supplied
Electricity.When the current value monitored is more than predetermined current threshold, it is described to can determine that the electric power system 100 needs to complete to charge
Battery system 110 is also powered, then it is that the drive system 200 provides electricity to control and complete the battery system 110 to charge
Energy.Wherein described predetermined current threshold can be 4A or 5A, can also be 6A, numerical value can according to actual demand into
The different setting of row.
Optionally, the step that the battery system 110 to charge provides electric energy for the drive system 200 is completed in the control
Suddenly, including：
Control the voltage balancing module 120 in the 110 place parallel branch of the battery system of charging complete out of service,
And the electric discharge relay 130 in the 110 place parallel branch of the battery system of charging complete is controlled to be closed, so that charging complete
The battery system 110 coordinate the main system to the drive system 200 provide electric energy.
Fig. 4 is refer to, is another flow diagram for the power supply management method that preferred embodiments of the present invention provide.
In the embodiment of the present invention, the electric vehicle 10 can also include vehicle control system 400, the vehicle control system 400 with
The drive system 200 is electrically connected, for controlling the operating status of the drive system 200.After the step S240,
The method can also include：
Step S250, by the electric power system 100 it is current can discharge power be sent to the vehicle of the electric vehicle 10
Control system 400.
Optionally, Fig. 5 is refer to, is the flow diagram of the sub-step that step S250 includes in Fig. 4.In the present embodiment
In, the step S250 can include sub-step S251 and sub-step S252：
Sub-step S251, in the electric power system 100 it is current electric energy is being provided each battery system 110 it is corresponding can
Discharge power is counted.
In the present embodiment, the battery system 110 can discharge power be corresponding battery system 110 under corresponding voltage
The maximum discharge power being capable of providing, the method to currently providing electric energy in the electric power system 100 by owning
Battery system 110 can discharge power counted, obtain that the electric power system 100 is capable of providing in the current situation puts
Electrical power.Wherein described electric power system 100 be capable of providing in the current situation can discharge power, equal to the electric power system
The current all battery systems 110 for providing electric energy can the sum of discharge power in 100.
Sub-step S252, according to statistics obtain each battery system 110 can discharge power obtain the electric power system 100
It is current can discharge power, and by the electric power system 100 it is current can discharge power be sent to the vehicle of the electric vehicle 10
Control system 400.
In the present embodiment, the method passes through to the current all electricity for providing electric energy in the electric power system 100
Cell system 110 can discharge power carry out summation operation, obtain the electric power system 100 it is current can discharge power, and will
To it is described can discharge power be sent to the vehicle control system 400 so that the vehicle control system 400 is according to the confession
Electric system 100 it is current can discharge power the operating condition of the drive system 200 is controlled, improve driving for driver
Sail experience.
Fig. 6 is refer to, is one kind of the power supply management system 300 shown in Fig. 1 of preferred embodiments of the present invention offer
Block diagram.In embodiments of the present invention, the power supply management system 300 includes system selection module 310, voltage difference compares
Module 320 and charge control module 330.
The system chooses module 310, for being monitored in real time to each 110 voltage of battery system, chooses voltage value most
Main system of the big battery system 110 as electric power system 100, and the main system is controlled to provide electric energy for drive system 200.
The voltage difference comparison module 320, for by the voltage difference between other battery systems 110 and the main system
Respectively compared with first voltage difference threshold value.
In the present embodiment, the system chooses module 310 and the voltage difference comparison module 320 can perform Fig. 2 respectively
Shown in step S210 and step S220, specific implementation procedure can refer to above to the step S210 and the step
The detailed description of S220.
The charge control module 330, for there are 110 corresponding voltage difference of battery system be more than first voltage it is poor
During threshold value, the battery system 110 for being more than first voltage difference threshold value to the voltage difference using the main system is charged, and
Stop charging when the voltage of the battery system 110 is consistent with the main system voltage.
In the present embodiment, the charge control module 330 can perform institute in step S230 and Fig. 3 shown in Fig. 2
The sub-step S231 and sub-step S232 shown, specific implementation procedure can refer to above to the step S230, the sub-step
Rapid S231, the detailed description of the sub-step S232.
The system chooses module 310, is additionally operable to the electric voltage equalization mould being connected to the battery system 110 for completing to charge
The electric current flowed through on block 120 is monitored, and when the current value monitored is more than predetermined current threshold, control completes what is charged
The battery system 110 provides electric energy for the drive system 200.
In the present embodiment, the system chooses module 310 and can also carry out step S240 shown in Fig. 2, specifically
Implementation procedure can refer to above to the detailed description of the step S240.
Refer to Fig. 7, be preferred embodiments of the present invention provide Fig. 1 shown in power supply management system 300 it is another
Kind block diagram.In embodiments of the present invention, the power supply management system 300 can also include power sending module 340.
The power sending module 340, for by the electric power system 100 it is current can discharge power be sent to the electricity
The vehicle control system 400 of electrical automobile 10.
In the present embodiment, the power sending module 340 can perform institute in the step S250 and Fig. 5 shown in Fig. 4
The sub-step S251 and sub-step S252 shown, specific implementation procedure can refer to the step S250 above, the sub-step
The detailed description of the rapid S251 and sub-step S252.
In conclusion in the power supply management method and system that are provided in preferred embodiments of the present invention, the power supply management
Method can ensure that electric power system is in the power supply state that cruising ability is strong and discharge power is big, improve electric vehicle driver's
Driving experience.The method is for being managed the electric power system of electric vehicle, the electric power system and the electric vehicle
Drive system be electrically connected, the electric power system includes multiple battery systems parallel with one another, the electricity in every parallel branch
Cell system is in series with electric discharge relay and voltage balancing module, wherein the electric discharge relay and the voltage balancing module are simultaneously
Connection.First, the method chooses the battery system conduct of voltage value maximum by being monitored in real time to each cell system voltage
The main system of the electric power system, and the main system is controlled to provide electric energy for the drive system；Then, the method by its
His battery system and the voltage difference between the main system are respectively compared with first voltage difference threshold value；Then, the side
Method there are the corresponding voltage difference of battery system when being more than first voltage difference threshold value, using the main system to the voltage difference
The battery system that value is more than first voltage difference threshold value charges, and is protected in the voltage of the battery system with the main system voltage
Stop charging when holding consistent；Finally, the voltage balancing module that the method is connected by the battery system to charge to completion
On the electric current that flows through be monitored, and when the current value monitored is more than predetermined current threshold, control is completed to charge described
Battery system provides electric energy for the drive system, so as to which multiple battery systems in the electric power system can be carried out simultaneously
Power supply, it is ensured that the electric power system is in the power supply state that cruising ability is strong and discharge power is big, to improve electric vehicle driving
The driving experience of personnel.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of power supply management method, which is characterized in that be managed for the electric power system to electric vehicle, the power supply system
The drive system of system and the electric vehicle is electrically connected, and the electric power system includes multiple battery systems parallel with one another, often
Cell system in series in parallel branch has electric discharge relay and voltage balancing module, wherein the electric discharge relay with it is described
Voltage balancing module is in parallel, the described method includes：
Each cell system voltage is monitored in real time, chooses master of the battery system of voltage value maximum as the electric power system
System, and the main system is controlled to provide electric energy for the drive system；
By the voltage difference between other battery systems and the main system respectively compared with first voltage difference threshold value；
When being more than first voltage difference threshold value there are the corresponding voltage difference of battery system, using the main system to the voltage
The battery system that difference is more than first voltage difference threshold value charges, and the voltage in the battery system and the main system voltage
Stop charging when being consistent；
The electric current flowed through on the voltage balancing module being connected to the battery system for completing to charge is monitored, and is being monitored
Current value be more than predetermined current threshold when, control complete charging the battery system provide electric energy for the drive system.
2. according to the method described in claim 1, it is characterized in that, described control the main system to be provided for the drive system
The step of electric energy, including：
Voltage balancing module where controlling the main system in parallel branch is out of service, and controls the main system place simultaneously
The electric discharge relay for joining branch road is closed, so that the main system is provided to the drive system being electrically connected with the electric power system
Electric energy.
3. method according to claim 1 or 2, which is characterized in that it is described by other battery systems and the main system it
Between voltage difference respectively compared with first voltage difference threshold value the step of, including：
The voltage between other battery systems and the main system is calculated according to the voltage value of each battery system monitored
Difference, and by the corresponding voltage difference of each battery system respectively compared with the first voltage difference threshold value.
4. method according to claim 1 or 2, which is characterized in that described to use the main system to the voltage difference
The step of battery system more than the poor threshold value of first voltage is charged, including：
Control and the voltage difference more than first voltage difference threshold value the voltage balancing module that is connected of battery system from the master
Electric energy is obtained at system, and is charged with the electric energy got to the battery system.
5. according to the method described in claim 4, it is characterized in that, the voltage in the battery system and main system electricity
The step of stopping charging when pressure is consistent, including：
The voltage of the battery system in the voltage of the main system real-time monitored and charging is calculated described
Voltage difference when battery system currently charges, and by the voltage difference compared with second voltage difference threshold value, wherein institute
Second voltage difference threshold value is stated less than the first voltage difference threshold value；
If the voltage difference is less than the second voltage difference threshold value, the voltage balancing module that the battery system is connected is controlled to stop
Electric energy is only obtained at the main system, to stop charging to the battery system.
6. according to the method described in claim 1, it is characterized in that, the battery system that completion is controlled to charge is described
Drive system provides the step of electric energy, including：
Voltage balancing module where controlling the battery system of charging complete in parallel branch is out of service, and controls charging
Electric discharge relay where the battery system completed in parallel branch is closed, so that the battery system of charging complete is matched somebody with somebody
It closes the main system and provides electric energy to the drive system.
7. according to the method described in claim 1, it is characterized in that, the electric vehicle further includes vehicle control system, in institute
It states the electric current flowed through on the voltage balancing module that is connected of the battery system completing to charge is monitored, and monitoring
When current value is more than predetermined current threshold, the battery system for completing to charge is controlled to provide the step of electric energy for the drive system
After rapid, the method further includes：
By the electric power system it is current can discharge power be sent to the vehicle control system of the electric vehicle.
8. the method according to the description of claim 7 is characterized in that it is described by the electric power system it is current can discharge power send out
The step of giving the vehicle control system of the electric vehicle, including：
To in the electric power system it is current electric energy is being provided each battery system it is corresponding can discharge power count；
Each battery system obtained according to statistics can discharge power obtain the electric power system it is current can discharge power, and will
The electric power system it is current can discharge power be sent to the vehicle control system of the electric vehicle.
9. a kind of power supply management system, which is characterized in that be managed for the electric power system to electric vehicle, the power supply system
The drive system of system and the electric vehicle is electrically connected, and the electric power system includes multiple battery systems parallel with one another, often
Cell system in series in parallel branch has electric discharge relay and voltage balancing module, wherein the electric discharge relay with it is described
Voltage balancing module is in parallel, the system comprises：
System chooses module, and for being monitored in real time to each cell system voltage, the battery system for choosing voltage value maximum is made
For the main system of the electric power system, and the main system is controlled to provide electric energy for the drive system；
Voltage difference comparison module, for by the voltage difference between other battery systems and the main system respectively with first voltage
Poor threshold value is compared；
Charge control module, for there are the corresponding voltage difference of battery system be more than first voltage difference threshold value when, using institute
Main system is stated to charge to battery system of the voltage difference more than first voltage difference threshold value, and in the electricity of the battery system
Stop charging when pressure is consistent with the main system voltage；
The system chooses module, is additionally operable to what is flowed through on the voltage balancing module being connected to the battery system for completing to charge
Electric current is monitored, and when the current value monitored is more than predetermined current threshold, the battery system to charge is completed in control
Electric energy is provided for the drive system.
10. system according to claim 9, which is characterized in that the electric vehicle further includes vehicle control system, described
System further includes：
Power sending module, for by the electric power system it is current can discharge power be sent to the vehicle control of the electric vehicle
System processed.
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Effective date of registration: 20211018 Address after: 050899 No. 1, Qinghai Avenue, Ding County, Shijiazhuang City, Hebei Province Patentee after: SHIJIAZHUANG ZHONGBO AUTOMOBILE Co.,Ltd. Patentee after: YINLONG ENERGY Co.,Ltd. Patentee after: Luoyang Yinlong New Energy Co.,Ltd. Address before: 519000 16 Jinhu Road, San Zao Town, Jin Wan District, Zhuhai, Guangdong Patentee before: ZHUHAI GUANGTONG AUTOMOBILE Co.,Ltd. Patentee before: YINLONG ENERGY Co.,Ltd. |
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Address after: 050899 No. 1, Qinghai Avenue, Ding County, Shijiazhuang City, Hebei Province Patentee after: SHIJIAZHUANG ZHONGBO AUTOMOBILE Co.,Ltd. Patentee after: Gree titanium new energy Co.,Ltd. Patentee after: Luoyang Gree titanium new energy Co.,Ltd. Address before: 050899 No. 1, Qinghai Avenue, Ding County, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG ZHONGBO AUTOMOBILE Co.,Ltd. Patentee before: YINLONG ENERGY Co.,Ltd. Patentee before: Luoyang Yinlong New Energy Co.,Ltd. |