CN106786965B - The method that SOC balance is carried out to multiple batteries in electrically-charging equipment - Google Patents
The method that SOC balance is carried out to multiple batteries in electrically-charging equipment Download PDFInfo
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- CN106786965B CN106786965B CN201710030642.XA CN201710030642A CN106786965B CN 106786965 B CN106786965 B CN 106786965B CN 201710030642 A CN201710030642 A CN 201710030642A CN 106786965 B CN106786965 B CN 106786965B
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/64—Optimising energy costs, e.g. responding to electricity rates
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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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/13—Maintaining the SoC within a determined range
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to charging technique field, the method that multiple batteries in a kind of pair of electrically-charging equipment carry out SOC balance is particularly provideed, the multiple battery is for simultaneously charging to same electric car.The present invention is directed to improve the charging service quality of electrically-charging equipment and the service life of battery.For this purpose, the method includes the following steps: obtaining the SOC of each battery in the multiple battery；The SOC of acquired each battery is compared；Determine that each battery is the power of electric car charging according to comparison result.The present invention carries out SOC balance by multiple batteries to electrically-charging equipment, on the one hand the small battery capacity emptying of SOC is avoided, and SOC big battery also has sufficient electricity, thus when charging to next electric car, multiple batteries can also be used simultaneously, are improved service quality, on the other hand be ensure that the consistency of the charge and discharge number of multiple batteries, it realizes the equilibrium to battery SOH, improves the service life of battery.
Description
Technical field
The present invention relates to multiple batteries in charging technique field more particularly to a kind of pair of electrically-charging equipment to carry out SOC balance
Method.
Background technique
Electric car is developed rapidly because of energy conservation and environmental protection, meanwhile, it is flexibly convenient in order to be provided to electric car
Charging service has been developed using the electrically-charging equipment that rechargeable battery to electric car charging, especially movable charging vehicle.
The charging service process of the existing electrically-charging equipment to be charged using battery is general are as follows: opens electrically-charging equipment control
Platform connects charging gun, selects charging service, and electrically-charging equipment control platform is filled according to the service type that operator selects
Electric control.If charged simultaneously to more vehicles, one piece of battery gives more vehicles to fill respectively to a vehicle charging, multiple batteries
Electricity.Since different user demands electricity is different, will lead to the muti-piece battery of electrically-charging equipment SOC (State of Charge:
State-of-charge is also remaining capacity) it is different.When muti-piece battery gives a vehicle charging simultaneously, muti-piece battery will export same
Power, if muti-piece battery SOC is different, may one piece of battery be vented, at this moment, if charged to next user,
It can only be charged with remaining battery, cause next user's charging time longer, reduce the experience effect of next user.
On condition that the capacity of the battery of electrically-charging equipment is as the capacity of battery for being electrically charged electrical automobile, if capacity is different
In the case where cause, SOC re-calibration, mark are carried out to the battery for being electrically charged electrical automobile using the SOC of the battery of electrically-charging equipment as standard
The SOC that electrical automobile is electrically charged after fixed, which is equal to, demarcates preceding SOC multiplied by calibration coefficient, and calibration coefficient is equal to the battery for being electrically charged electrical automobile
Capacity divided by the single battery of electrically-charging equipment capacity.
In addition, battery has certain remaining capacity after the completion of electrically-charging equipment charging service, if equal without SOC
Weighing apparatus, each piece of battery dump energy is different, for a long time it cannot be guaranteed that the consistency of each piece of battery charge and discharge number, charge and discharge number compared with
More batteries is by quick aging, at this moment if replacement battery, just has one piece of battery and does not reach the replacement service life, value is without most
Bigization utilizes.
Summary of the invention
For the above problem in the prior art, the object of the present invention is to provide multiple batteries in a kind of pair of electrically-charging equipment
The method for carrying out SOC balance, to improve the charging service quality of electrically-charging equipment and the charge and discharge number of each battery is allowed to keep preferable
Consistency, to improve battery whole service life in electrically-charging equipment.
The method for carrying out SOC balance multiple batteries in electrically-charging equipment of the invention includes the following steps: described in acquisition
The SOC of each battery in multiple batteries；The SOC of acquired each battery is compared；It is determined according to comparison result every
A battery is the power of the object charging to be charged.
Preferably, it is described according to comparison result determine the step of each battery is the power of the object to be charged charging into
A step include: that if the SOC of each battery is identical or difference within preset range, each battery is with maximum allowable function
Rate is the object charging to be charged.
Preferably, it is described according to comparison result determine the step of each battery is the power of the object to be charged charging into
If a step includes: that the SOC of each battery is not identical or difference is except preset range, the object to be charged is obtained
Demand SOC simultaneously judges whether the object to be charged needs promptly to charge.
Preferably, the method further includes: if it is determined that the object to be charged needs urgent charging, then further
The minimum SOC product of the multiple battery is compared with the demand SOC of the object to be charged, wherein the minimum SOC
Product is the product of the total quantity of the SOC and the multiple battery of the smallest battery of SOC in the multiple battery.
Preferably, the method further includes: if the minimum SOC product be greater than the object to be charged demand
SOC, then each battery is the object charging to be charged with maximum allowable power.
Preferably, the multiple battery includes the first battery and the second battery, the method further includes: if described
Minimum SOC product is less than the demand SOC of the object to be charged, then first battery and described is determined using following formula
The charging output power P of second battery1And P2Between ratio:
Wherein, S0For the demand SOC, S of the object to be charged1Indicate SOC in first battery and second battery
The SOC of lesser battery.
Preferably, the charging output power P of the biggish battery of SOC2It is set as the maximum allowable power of the electrically-charging equipment,
And according to the charging output power P of first battery and second battery1And P2Between ratio-dependent SOC it is lesser
The charging output power P of battery1。
Preferably, the multiple battery includes the first battery and the second battery, the method further includes: if it is determined that
The object to be charged does not need promptly to charge, then first battery and second battery are determined using following formula
Charge output power P1And P2Between ratio:
Wherein, S0For the demand SOC, S of the object to be charged1、S2Respectively described first battery and second battery
The SOC of the smaller and biggish battery of middle SOC, wherein work as S1+S2-S0When < 0, S is taken3=0.
Preferably, the charging output power P of first battery and second battery1With P2Summation depend on it is described
The demand SOC of object to be charged and expected service time.
Preferably, the electrically-charging equipment is movable charging vehicle or charging station or charging pile；And/or it is described to be charged right
Like electric car.
Method of the invention carries out SOC balance by multiple batteries to electrically-charging equipment, on the one hand avoids the small electricity of SOC
Electricity is vented when Chi Wei electric car provides charging service, and SOC big battery also has sufficient electricity, thus in the case where giving
When one electric car charging, moreover it is possible to while multiple batteries are used, shorten the charging time, improves service quality；On the other hand, lead to
The SOC balance for crossing battery ensure that the consistency of the charge and discharge number of multiple batteries, realize to battery SOH (State of
Health: the health status of battery) equilibrium, propose the service life for having done each battery, the maintenance of charging vehicle easy to remove.
Detailed description of the invention
Fig. 1 is the charging system structural block diagram of electrically-charging equipment in the embodiment of the present invention；
Fig. 2 is the flow chart of the method that multiple batteries in electrically-charging equipment are carried out with SOC balance of the embodiment of the present invention.
Specific embodiment
The preferred embodiment of the present invention is described with reference to the accompanying drawings and in conjunction with movable charging vehicle and electric car.Ability
Field technique personnel are it should be understood that these embodiments are used only for explaining technical principle of the invention, it is not intended that limitation
Protection scope of the present invention.For example, protection scope of the present invention is aobvious although the application is described in conjunction with electric car
It so should not be limited thereto, under the premise of without departing from balancing principle of the invention, protection scope of the present invention also be can be applied to
The device of other any need chargings.
In order to improve the charging service quality for the electrically-charging equipment for using rechargeable battery and improve the utility value of its battery,
The present invention provides the methods that multiple batteries in a kind of pair of electrically-charging equipment carry out SOC balance, and this method is in the multiple battery
Implement when for charging simultaneously to same electric car, wherein the electrically-charging equipment can be movable charging vehicle or charging station or
Charging pile etc..As shown in Figure 1, the charging system of electrically-charging equipment of the present invention includes multiple batteries, each of which is had
DC/DC charging module, each battery are connected in parallel by switch K.When switch K closure, each battery can be electronic to one simultaneously
Automobile charging, when switch K is disconnected, each battery can charge to multiple electric cars respectively.
It is the side that multiple batteries in electrically-charging equipment are carried out with SOC balance of the embodiment of the present invention referring next to Fig. 2, Fig. 2
The flow chart of method.Referring to Fig. 2, SOC balance method of the invention includes the SOC for obtaining the multiple battery in step sl.SOC
For the state-of-charge of battery, can be used to measure battery dump energy.The battery of electrically-charging equipment in use for some time, each battery
SOC can be different.In order to carry out the SOC balance of battery, receives the charge request of user in electrically-charging equipment, prepare to user's
When electric car charges, the SOC for obtaining each battery of electrically-charging equipment is first had to.It is known that there are many SOC acquisition methods, such as ampere-hour
Integration method, discharge test method, open circuit voltage method, neural network etc..For example, battery SOC is measured using current integration method
Calculation formula are as follows:Wherein, SOC0For initial SOC, CIFor battery rated capacity, I is
Charging and discharging currents, when charging, are negative, and when electric discharge is positive, and θ is efficiency for charge-discharge.Current integration method being capable of real-time estimation battery SOC.
SOC balance method of the invention further includes in step s 2 being compared the SOC of acquired each battery simultaneously
Determine whether the SOC of each battery is consistent or difference is in acceptable preset range according to comparison result.
In the embodiment shown in Figure 2, if the SOC of each battery is identical or difference within preset range,
Make each battery with the charging of maximum allowable power electric car in step S3.Specifically, if by it was found that filling
Electric facility be used for multiple batteries of same electric vehicle charging SOC is identical or difference within preset range, then show
The SOC of the multiple battery be currently it is balanced, at this moment each battery with maximum allowable power be the electric car charging,
Not only it had been able to maintain the SOC balance of the multiple battery, but also can complete to charge with most fast speed, has obtained good user experience.
On the contrary, if by above-mentioned it was found that the SOC of each battery is not identical or difference is except preset range,
The demand SOC of electric car is obtained in step s 4 and judges whether electric car needs promptly to charge.Specifically, if through
It crosses it was found that SOC of the electrically-charging equipment for multiple batteries to same electric vehicle charging be not identical or difference is in predetermined model
Except enclosing, then show the SOC of the multiple battery be currently it is unbalanced, at this moment need further obtain electric car demand
SOC simultaneously judges whether electric car needs promptly to charge, then according to the demand SOC and electronic vapour of the electric car got
The information whether vehicle needs promptly to charge determine each battery be electric car charging power.More specifically, if it is decided that
Electric car needs urgent charging, then further in the step s 7 by the minimum SOC product and electric car of the multiple battery
Demand SOC be compared, wherein the minimum SOC product is the SOC of the smallest battery of SOC and institute in the multiple battery
State the product of the total quantity of multiple batteries.If relatively being determined that the minimum SOC product is greater than the demand SOC of electric car,
Then in step slo each battery with maximum allowable power be the electric car charging.By each battery with maximum
Allow power for electric car charging, can complete to charge with prestissimo, meet the need that user's electric car needs promptly to charge
It asks, simultaneously because the minimum SOC product is greater than the demand SOC of the electric car, therefore, is not in after completing charging
The case where some battery is vented completely avoids percentage of batteries can only being used to charge when charging to next electric car
Situation improves customer experience.As an example, the demand SOC of electric car to be charged can be obtained by the APP of user,
When user initiates charging service request, the APP that solicited message leads to mobile phone, vehicle-mounted computer etc. is transmitted to movable charging vehicle, moving charging
Electric car can be equipped with corresponding communication terminal.User requests that demand electricity can also be clearly indicated when charging service, gives in this case
User charges to specified electricity.If user does not have specified services demand electricity, it is at full charge to be defaulted as user.
Further, if relatively being determined that the minimum SOC product is less than the demand SOC of electric car in the step s 7,
In order to avoid the smallest battery of SOC is completely emptied during the charging process, each battery cannot all be electricity with maximum allowable power
Electrical automobile charging, but need to redefine the charging output power of each battery according to the SOC of each battery.For example,
In the case where the multiple battery includes the first battery and the second battery, if the minimum SOC product is less than electric car
Demand SOC, then the charging output of first battery and second battery is determined using following formula in step s 8
Power P1And P2Between ratio:
Wherein, S0For the demand SOC, S of the electric car1Indicate in first battery and second battery SOC compared with
The SOC of small battery.The charging output power P of first battery and second battery is being determined1And P2Between ratio
Later, in step s 9 by the charging output power P of the biggish battery of SOC2It is set as the maximum allowable function of the electrically-charging equipment
Rate, and according to predetermined charging output power P1And P2Between ratio determine the charging output work of the lesser battery of SOC
Rate P1.The maximum allowable power of usual electrically-charging equipment is the specified charge power of the battery of electrically-charging equipment, the specified charge power
Depending on electrically-charging equipment fan-out capability.By by the charging output power P of the biggish battery of SOC2It is set as electrically-charging equipment most
It is big to allow power, it is able to satisfy the demand that user's electric car needs promptly to charge.
On the other hand, if determining that electric car does not need promptly to charge in step s 4, according to each electricity of acquisition
The SOC in the pond and demand SOC of electric car determines the charging output power of each battery respectively, so as to complete to electric car
After charging, the SOC of current unbalance each battery is made to reach balanced.For example, include in the multiple battery
In the case where first battery and the second battery, when electric car does not need promptly to charge in step s 5 using following formula come
Determine the charging output power P of first battery and second battery1And P2Between ratio:
Wherein, S0For the demand SOC, S of the electric car1、S2In respectively described first battery and second battery
The SOC of the smaller and biggish battery of SOC, wherein work as S1+S2-S0When < 0, S is taken3=0.Then, in step s 6 according to
The demand SOC of object to be charged and expected service time determine the charging output power of first battery and second battery
P1With P2Summation, and then determine charging output power P1With P2Value.As a result, after completing the charging of electric car, first
Battery reaches balanced with the SOC of the second battery.
Method of the invention can be realized the SOC balance of multiple batteries of electrically-charging equipment.SOC by multiple batteries is equal
On the one hand weighing apparatus avoids the small battery of SOC electricity when providing charging service for electric car and is vented, and SOC big battery is also
With sufficient electricity, thus when charging to next electric car, moreover it is possible to while multiple batteries are used, when shortening charging
Between, it improves service quality.On the other hand, by the SOC balance of battery, it ensure that the consistency of the charge and discharge number of multiple batteries,
The equilibrium to battery SOH is realized, the service life for having done battery, the maintenance of charging vehicle easy to remove are proposed.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (7)
1. the method that multiple batteries in a kind of pair of electrically-charging equipment carry out SOC balance, the multiple battery is for simultaneously to same
Object charging to be charged, which is characterized in that the method includes the following steps:
Obtain the SOC of each battery in the multiple battery；
The SOC of acquired each battery is compared；
Determine that each battery is the power of the object charging to be charged according to comparison result；
Wherein, described to determine that the step of each battery is the power of the object charging to be charged is further wrapped according to comparison result
It includes:
If the SOC of each battery is not identical or difference is except preset range, the demand of the object to be charged is obtained
SOC simultaneously judges whether the object to be charged needs promptly to charge；
According to judging result, determine that each battery is the power of the object charging to be charged；
Wherein, the method further includes:, then further will be described if it is determined that the object to be charged needs urgent charging
The minimum SOC product of multiple batteries is compared with the demand SOC of the object to be charged, wherein the minimum SOC product is
The product of the total quantity of the SOC and the multiple battery of the smallest battery of SOC in the multiple battery；
Wherein, the multiple battery includes the first battery and the second battery,
The method further includes: if the minimum SOC product is less than the demand SOC of the object to be charged, utilize
Following formula determines the charging output power P of first battery and second battery1And P2Between ratio:
Wherein, S0For the demand SOC, S of the object to be charged1Indicate that SOC is smaller in first battery and second battery
Battery SOC.
2. the method according to claim 1, wherein it is described according to comparison result determine each battery be it is described to
The step of power of charging object charging, further comprises: if the SOC of each battery is identical or difference preset range it
Interior, then each battery is the object charging to be charged with maximum allowable power.
3. the method according to claim 1, wherein the method further includes: if the minimum SOC multiplies
Product is greater than the demand SOC of the object to be charged, then each battery is the object charging to be charged with maximum allowable power.
4. the method according to claim 1, wherein the charging output power P of the biggish battery of SOC2It is set as institute
The maximum allowable power of electrically-charging equipment is stated, and according to the charging output power P of first battery and second battery1With
P2Between the lesser battery of ratio-dependent SOC charging output power P1。
5. the method according to claim 1, wherein the multiple battery include the first battery and the second battery,
The method further includes: if it is determined that the object to be charged does not need promptly to charge, then using following formula come
Determine the charging output power P of first battery and second battery1And P2Between ratio:
Wherein, S0For the demand SOC, S of the object to be charged1、S2In respectively described first battery and second battery
The SOC of the smaller and biggish battery of SOC.
6. according to the method described in claim 5, it is characterized in that, the charging of first battery and second battery exports
Power P1With P2Summation depend on the object to be charged demand SOC and charging expeced time.
7. method according to any one of claim 1 to 6, which is characterized in that the electrically-charging equipment is movable charging vehicle
Or charging station or charging pile；And/or the object to be charged is electric car.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030642.XA CN106786965B (en) | 2017-01-17 | 2017-01-17 | The method that SOC balance is carried out to multiple batteries in electrically-charging equipment |
| PCT/CN2017/095147 WO2018133362A1 (en) | 2017-01-17 | 2017-07-31 | Method for balancing socs of multiple batteries in charging facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030642.XA CN106786965B (en) | 2017-01-17 | 2017-01-17 | The method that SOC balance is carried out to multiple batteries in electrically-charging equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106786965A CN106786965A (en) | 2017-05-31 |
| CN106786965B true CN106786965B (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710030642.XA Active CN106786965B (en) | 2017-01-17 | 2017-01-17 | The method that SOC balance is carried out to multiple batteries in electrically-charging equipment |
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| CN (1) | CN106786965B (en) |
| WO (1) | WO2018133362A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786965B (en) * | 2017-01-17 | 2019-07-12 | 上海蔚来汽车有限公司 | The method that SOC balance is carried out to multiple batteries in electrically-charging equipment |
| CN108819747B (en) * | 2018-06-13 | 2021-11-02 | 蔚来(安徽)控股有限公司 | Multi-branch power distribution management for multi-branch energy storage system |
| CN110682831B (en) * | 2018-06-19 | 2021-05-14 | 广州汽车集团股份有限公司 | Vehicle-mounted power battery equalization method and device and automobile |
| CN110303941B (en) * | 2019-07-25 | 2021-06-15 | 爱驰汽车有限公司 | Battery equalization method, system, equipment and medium |
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