CN107482699A - Battery management method, battery management system, electrokinetic cell system and vehicle - Google Patents
Battery management method, battery management system, electrokinetic cell system and vehicle Download PDFInfo
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- CN107482699A CN107482699A CN201610430636.9A CN201610430636A CN107482699A CN 107482699 A CN107482699 A CN 107482699A CN 201610430636 A CN201610430636 A CN 201610430636A CN 107482699 A CN107482699 A CN 107482699A
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- 238000007726 management method Methods 0.000 title claims abstract description 81
- 238000004364 calculation method Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 30
- 230000005611 electricity Effects 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 17
- 239000010949 copper Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention discloses a kind of battery management method, battery management system, electrokinetic cell system and vehicle.Wherein battery management method includes：First voltage value is worth to according to first group of voltage, first group of magnitude of voltage is the magnitude of voltage for the battery cell being connected in each battery module of electrokinetic cell system with other battery modules；Second voltage value is worth to according to second group of voltage, second group of magnitude of voltage for the battery cell in each battery module of electrokinetic cell system in addition to the battery cell being connected with other battery modules magnitude of voltage；According to first voltage value and second voltage value offset value calculation；The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.The embodiment of the present invention by eliminate use one from control board management two with upper battery modules when existing uniformity difference the problem of, battery module can be configured according to the actual acquisition ability from control plate, reduce in battery management system from the quantity of control plate, so as to save resource, reduce cost.
Description
Technical field
The invention belongs to power technique fields, more particularly to a kind of battery management method, battery management system,
Electrokinetic cell system and vehicle.
Background technology
Electrokinetic cell is the main power resources of electric automobile, and electrokinetic cell in use is equipped with special
Battery management system (Battery Management System, BMS).Inspection to electrokinetic cell working condition
Survey is completed by battery management system, and other functions of battery management system, such as state-of-charge (State of
Charge, SOC), the meter of health status (State of Health, SOH) and battery protection function etc.
Calculate, be also all built upon on the basis to cell operating status detection.
The battery management system of existing large-scale pure electric automobile, such as pure electric coach, pure electronic logistic car,
The main distributed frame for using one master and multiple slaves, i.e., including a master control borad (Bus Control Unit,
BCU it is) and multiple from control plate (battery management unit, BMU).Because electrokinetic cell is by multiple electricity
Pond module composition, configuration one is needed from control plate generally for a battery module in electrokinetic cell, if
The actual acquisition ability from control plate that the quantity for the battery cell for needing to gather in battery module configures with it is not
Matching, cause a large amount of acquisition functions from control plate to be underutilized, the waste of resource can be produced, and
Because the usage quantity from control plate is more, the increase of cost will be caused.And if using one from control board management
The battery module of more than two, although the usage quantity from control plate can be reduced, in battery charging and discharging mistake
Cheng Zhonghui produces the problem of uniformity difference, so as to influence the calculating of battery management system various functions.
The content of the invention
The technical problem to be solved of the embodiment of the present invention is：A kind of battery management method, cell tube are provided
Reason system, electrokinetic cell system and vehicle, to reduce the cost of electrokinetic cell system.
One side according to embodiments of the present invention, there is provided a kind of battery management method, including：
First voltage value is worth to according to first group of voltage, first group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage for the battery cell being connected in each battery module with other battery modules；
Second voltage value is worth to according to second group of voltage, second group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage of battery cell in each battery module in addition to the battery cell being connected with other battery modules；
According to first voltage value and second voltage value offset value calculation；
The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
It is described to be worth to first according to first group of voltage in another embodiment based on the above method of the present invention
Magnitude of voltage, the average value of first group of magnitude of voltage is specially calculated as first voltage value.
It is described to be worth to second according to second group of voltage in another embodiment based on the above method of the present invention
Magnitude of voltage, the average value of second group of magnitude of voltage is specially calculated as second voltage value.
It is described according to first voltage value and second voltage in another embodiment based on the above method of the present invention
It is worth offset value calculation, including：
The difference for calculating first voltage value and second voltage value obtains voltage difference；
The absolute value of voltage difference is obtained as offset.
In another embodiment based on the above method of the present invention, it is described with offset in first group of magnitude of voltage
The magnitude of voltage of battery cell compensates, including：
Detect the current working condition of electrokinetic cell system；
If electrokinetic cell system is currently at charged state, each magnitude of voltage in first group of magnitude of voltage is judged
Whether the first preset value is more than；
If some magnitude of voltage in first group of magnitude of voltage is more than the first preset value, compensation is subtracted with the magnitude of voltage
Value；
If electrokinetic cell system is currently at discharge condition, each magnitude of voltage in first group of magnitude of voltage is judged
Whether the second preset value is less than；
If some magnitude of voltage in first group of magnitude of voltage is less than the second preset value, with the magnitude of voltage plus compensation
Value.
It is described to be worth to first according to first group of voltage in another embodiment based on the above method of the present invention
Before magnitude of voltage, in addition to：
Gather the magnitude of voltage of battery cell in each battery module of electrokinetic cell system；
Whether the battery cell for judging current collection voltages value is to connect in each battery module with other battery modules
The battery cell connect；
If the battery cell of current collection voltages value is the electricity being connected in each battery module with other battery modules
Pond monomer, the magnitude of voltage of collection is stored to first group of magnitude of voltage；
If the battery cell of current collection voltages value is not what is be connected in each battery module with other battery modules
Battery cell, the magnitude of voltage of collection is stored to second group of magnitude of voltage.
Other side according to embodiments of the present invention, there is provided a kind of battery management system, including：
First processing units, for being worth to first voltage value, first group of voltage according to first group of voltage
It is worth the magnitude of voltage for the battery cell being connected in each battery module for electrokinetic cell system with other battery modules；
Second processing unit, for being worth to second voltage value, second group of voltage according to second group of voltage
It is worth the electricity in addition to the battery cell being connected with other battery modules in each battery module for electrokinetic cell system
The magnitude of voltage of pond monomer；
Compensating unit, for according to first voltage value and second voltage value offset value calculation；And with offset pair
The magnitude of voltage of battery cell compensates in first group of magnitude of voltage.
Another aspect according to embodiments of the present invention, there is provided a kind of electrokinetic cell system, including：Above-mentioned
Battery management system described in one embodiment.
In another embodiment based on the above-mentioned electrokinetic cell system of the present invention, in addition to：Multiple battery modules,
The multiple battery module is connected；The battery management system includes：One master control borad and it is multiple from control plate；
Wherein, it is connected described in each from control plate with two battery modules described above, for gathering connected electricity
The magnitude of voltage of battery cell in the module of pond；The master control borad is connected with all from control plate, for performing following behaviour
Make：
First voltage value is worth to according to first group of voltage, first group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage for the battery cell being connected in each battery module with other battery modules；
Second voltage value is worth to according to second group of voltage, second group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage of battery cell in each battery module in addition to the battery cell being connected with other battery modules；
According to first voltage value and second voltage value offset value calculation；
The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
Another aspect according to embodiments of the present invention, there is provided a kind of vehicle, including：Any of the above-described embodiment
Described electrokinetic cell system.
Based on battery management method provided in an embodiment of the present invention, battery management system, electrokinetic cell system and
Vehicle, by eliminate use one from control board management two with during upper battery modules in battery charge and discharge process
The problem of existing uniformity difference, battery module can be configured according to the actual acquisition ability from control plate, reduced
From the quantity of control plate in battery management system, so as to save resource, cost is reduced.
Brief description of the drawings
The accompanying drawing of a part for constitution instruction describes embodiments of the invention, and is reinstated together with description one
In the principle for explaining the present invention.
Referring to the drawings, according to following detailed description, the present invention can be more clearly understood, wherein：
Fig. 1 is the flow chart of battery management method one embodiment of the present invention.
Fig. 2 is the flow chart of another embodiment of battery management method of the present invention.
Fig. 3 is the flow chart of another embodiment of battery management method of the present invention.
Fig. 4 is the structure chart of battery management system one embodiment of the present invention.
Fig. 5 is the structure chart of another embodiment of battery management system of the present invention.
Fig. 6 is the structure chart of another embodiment of battery management system of the present invention.
Fig. 7 is the structure chart of electrokinetic cell system one embodiment of the present invention.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless
Illustrate in addition, positioned opposite, the numerical expression sum of the part otherwise illustrated in these embodiments
Value does not limit the scope of the invention.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not
What the proportionate relationship according to reality was drawn.
The description only actually at least one exemplary embodiment is illustrative below, never as pair
The present invention and its application or any restrictions used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant,
But in the appropriate case, the technology, method and apparatus should be considered as part for specification.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once certain
One is defined in an accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.
Existing electrokinetic cell is to form battery module by battery cell connection in series-parallel, then battery module is connected
Form, such as will be together in series between battery module by copper bar, when battery management system uses one from control
When board management two is with upper battery modules, for example with one from control two battery modules of board management, from control
When the information of voltage of plate two battery modules of collection, due to the connected mode and battery of two battery modules
Connected mode in module between battery cell is different, and the copper bar resistance for connecting battery module is larger, will
Cause from the voltage difference being connected between two battery cells at copper bar both ends that is gathered of control plate in discharge and recharge
During it is especially big, and electric current is bigger, and voltage difference is bigger, so as to cause the battery list of whole electrokinetic cell
The uniformity of body is poor.
Inventor has found that the consistent gender gap of the magnitude of voltage of this percentage of batteries monomer is in electrokinetic cell by studying
Charging end and electric discharge end performance it is particularly evident, by one from control two battery modules of board management exemplified by,
In electrokinetic cell, the first battery module is connected with the second battery module by copper bar, wherein the first battery mould
Last battery cell in block is connected with first battery cell in the second battery module across copper bar, from
Control plate and manage the first battery module and the second battery module simultaneously, under same environment, filled in electrokinetic cell
When electric, first battery cell in the second battery module is relative to the battery cell being not at across copper bar connection
Voltage it is higher, when electrokinetic cell discharges, first battery cell in the second battery module be not relative to
Low voltage in the battery cell connected across copper bar.
Fig. 1 is the flow chart of battery management method one embodiment of the present invention.As shown in figure 1, the present embodiment
Battery management method, including：
S120, first voltage value is worth to according to first group of voltage.
Wherein, first group of magnitude of voltage is to be connected in each battery module of electrokinetic cell system with other battery modules
Battery cell magnitude of voltage.
S140, second voltage value is worth to according to second group of voltage.
Wherein, second group of magnitude of voltage connects to be removed in each battery module of electrokinetic cell system with other battery modules
The magnitude of voltage of the battery cell outside battery cell connect.
S160, according to first voltage value and second voltage value offset value calculation.
S180, the magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
Based on battery management method provided in an embodiment of the present invention, one is used from control board management two by eliminating
It is individual with during upper battery modules present in battery charge and discharge process the problem of uniformity difference, can be according to from control
The actual acquisition ability configuration battery module of plate, is reduced from the quantity of control plate in battery management system, so as to save
About resource, reduces cost.
Fig. 2 is the flow chart of another embodiment of battery management method of the present invention.As shown in Fig. 2 this implementation
The battery management method of example, including：
S210, the average value of first group of magnitude of voltage is calculated as first voltage value.
Wherein, first group of magnitude of voltage is to be connected in each battery module of electrokinetic cell system with other battery modules
Battery cell magnitude of voltage.
S220, the average value of second group of magnitude of voltage is calculated as second voltage value.
Wherein, second group of magnitude of voltage connects to be removed in each battery module of electrokinetic cell system with other battery modules
The magnitude of voltage of the battery cell outside battery cell connect.
S230, the difference for calculating first voltage value and second voltage value obtain voltage difference.
S240, the absolute value of voltage difference is obtained as offset.
S250, the current working condition of detection electrokinetic cell system；If electrokinetic cell system is currently at charging
State, perform operation 260；If electrokinetic cell system is currently at discharge condition, operation 270 is performed.
S260, judges whether each magnitude of voltage in first group of magnitude of voltage is more than the first preset value.
S280, if some magnitude of voltage in first group of magnitude of voltage is more than the first preset value, subtracted with the magnitude of voltage
Remove offset.
S270, judges whether each magnitude of voltage in first group of magnitude of voltage is less than the second preset value.
S290, if some magnitude of voltage in first group of magnitude of voltage is less than the second preset value, added with the magnitude of voltage
Upper offset.
Wherein, if operation 260 judges that some magnitude of voltage in first group of magnitude of voltage is not more than the first preset value,
Then continue to judge whether next magnitude of voltage in first group of magnitude of voltage is more than the first preset value, until to first
All magnitudes of voltage have all judged in group magnitude of voltage.If operation 270 judges some in first group of magnitude of voltage
Magnitude of voltage is not less than the second preset value, then continues to judge whether next magnitude of voltage in first group of magnitude of voltage is big
In the first preset value, until all having judged magnitude of voltage all in first group of magnitude of voltage.
Wherein, the first preset value and the second preset value can be according to the battery lists in specific electrokinetic cell system
Body determine, for example, they can be in electrokinetic cell system a battery module in the absence of the feelings across copper bar
Average value of all battery cells in charge and discharge process during condition, or can also be institute in electrokinetic cell system
There is the battery module average value of all battery cells in charge and discharge process when in the absence of across the situation of copper bar.
Fig. 3 is the flow chart of another embodiment of battery management method of the present invention.As shown in figure 3, this implementation
The difference of the battery management method and the battery management method shown in Fig. 1 and Fig. 2 of example is, is obtaining first
Before magnitude of voltage, in addition to：
S320, gather the magnitude of voltage of battery cell in each battery module of electrokinetic cell system.
S340, judge current collection voltages value battery cell whether be in each battery module with other battery moulds
The battery cell of block connection；If the battery cell of current collection voltages value be in each battery module with other batteries
The battery cell of module connection, performs operation 360；If the battery cell of current collection voltages value is not each electricity
The battery cell being connected in the module of pond with other battery modules, perform operation 380.
S360, the magnitude of voltage of collection is stored to first group of magnitude of voltage.
S380, the magnitude of voltage of collection is stored to second group of magnitude of voltage.
Fig. 4 is the structure chart of battery management system one embodiment of the present invention.As shown in figure 4, the present embodiment
Battery management system, including：
First processing units, for being worth to first voltage value according to first group of voltage.
Wherein, first group of magnitude of voltage is to be connected in each battery module of electrokinetic cell system with other battery modules
Battery cell magnitude of voltage.
Second processing unit, for being worth to second voltage value according to second group of voltage.
Wherein, second group of magnitude of voltage connects to be removed in each battery module of electrokinetic cell system with other battery modules
The magnitude of voltage of the battery cell outside battery cell connect.
Compensating unit, for according to first voltage value and second voltage value offset value calculation；And with offset pair
The magnitude of voltage of battery cell compensates in first group of magnitude of voltage.
Based on battery management system provided in an embodiment of the present invention, one is used from control board management two by eliminating
It is individual with during upper battery modules present in battery charge and discharge process the problem of uniformity difference, can be according to from control
The actual acquisition ability configuration battery module of plate, is reduced from the quantity of control plate in battery management system, so as to save
About resource, reduces cost.
Fig. 5 is the structure chart of another embodiment of battery management system of the present invention.As shown in figure 5, this implementation
The battery management system of example, including：
First processing units, for calculating the average value of first group of magnitude of voltage as first voltage value.
Wherein, first group of magnitude of voltage is to be connected in each battery module of electrokinetic cell system with other battery modules
Battery cell magnitude of voltage.
Second processing unit, for calculating the average value of second group of magnitude of voltage as second voltage value.
Wherein, second group of magnitude of voltage connects to be removed in each battery module of electrokinetic cell system with other battery modules
The magnitude of voltage of the battery cell outside battery cell connect.
Compensating unit, for according to first voltage value and second voltage value offset value calculation；And with offset pair
The magnitude of voltage of battery cell compensates in first group of magnitude of voltage.
Wherein, compensating unit includes：
Computing module, the difference for calculating first voltage value and second voltage value obtain voltage difference.
Acquisition module, for obtaining the absolute value of voltage difference as offset.
Compensating unit also includes：
Detection module, the working condition current for detecting electrokinetic cell system.
Judge module, for the testing result according to detection module, if electrokinetic cell system is currently at charging
State, judges whether each magnitude of voltage in first group of magnitude of voltage is more than the first preset value；If electrokinetic cell
System is currently at discharge condition, and it is pre- to judge whether each magnitude of voltage in first group of magnitude of voltage is less than second
If value.
Execution module, for the judged result according to judge module, if some electricity in first group of magnitude of voltage
Pressure value is more than the first preset value, and offset is subtracted with the magnitude of voltage；If some electricity in first group of magnitude of voltage
Pressure value is less than the second preset value, and offset is added with the magnitude of voltage.
Wherein, judge module, if judging, some magnitude of voltage in first group of magnitude of voltage is default no more than first
Value, then continue to judge whether next magnitude of voltage in first group of magnitude of voltage is more than the first preset value, until right
All magnitudes of voltage have all judged in first group of magnitude of voltage.If judge some voltage in first group of magnitude of voltage
Whether value be not less than the second preset value, then continue to judge next magnitude of voltage in first group of magnitude of voltage more than the
One preset value, until all having judged magnitude of voltage all in first group of magnitude of voltage.
Wherein, the first preset value and the second preset value can be according to the battery lists in specific electrokinetic cell system
Body determine, for example, they can be in electrokinetic cell system a battery module in the absence of the feelings across copper bar
Average value of all battery cells in charge and discharge process during condition, or can also be institute in electrokinetic cell system
There is the battery module average value of all battery cells in charge and discharge process when in the absence of across the situation of copper bar.
Fig. 6 is the structure chart of another embodiment of battery management system of the present invention.As shown in fig. 6, this implementation
The difference of battery management system and the battery management system shown in Fig. 4 and Fig. 5 of example is, in addition to：
Collecting unit, the magnitude of voltage of battery cell in each battery module for gathering electrokinetic cell system.
Judging unit, for judge current collection voltages value battery cell whether be in each battery module with its
The battery cell of its battery module connection.
Execution unit, for the judged result according to the judging unit；If the battery of current collection voltages value
Monomer is the battery cell that is connected with other battery modules in each battery module, by the magnitude of voltage of collection store to
First group of magnitude of voltage；If the battery cell of current collection voltages value be not in each battery module with other battery moulds
The battery cell of block connection, the magnitude of voltage of collection is stored to second group of magnitude of voltage.
In addition, the embodiment of the present invention additionally provides a kind of electrokinetic cell system, any of the above-described embodiment is provided with
Battery management system.
Based on electrokinetic cell system provided in an embodiment of the present invention, any of the above-described embodiment of the present invention is provided with
Battery management system, it use one from board management two is controlled to be filled during upper battery modules in battery by eliminating
Present in discharge process the problem of uniformity difference, battery can be configured according to the actual acquisition ability from control plate
Module, reduce in battery management system from the quantity of control plate, so as to save resource, reduce cost, and
And be easily achieved based on electrokinetic cell system provided in an embodiment of the present invention is simple in construction, it can save in battery
The space in portion.
Fig. 7 is the structure chart of electrokinetic cell system one embodiment of the present invention.As shown in fig. 7, the present embodiment
Electrokinetic cell system, including：Multiple battery modules 710 and battery management system.Wherein, multiple batteries
Module 710 is connected, and each component units of the battery management system of any of the above-described embodiment of the present invention are integrated in electricity
Pond management system 720.Battery management system 720 includes：One master control borad 721 and it is multiple from control plate 722,
Each of which is connected from control plate 722 with two with upper battery modules 710, for gathering connected battery
The magnitude of voltage of battery cell 711 in module 710, master control 721 is connected with all from control plate 722, for holding
Row is following to be operated：
First voltage value is worth to according to first group of voltage, wherein first group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage for the battery cell being connected in each battery module with other battery modules；
Second voltage value is worth to according to second group of voltage, wherein second group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage of battery cell in each battery module in addition to the battery cell being connected with other battery modules；
According to first voltage value and second voltage value offset value calculation；
The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
The electrokinetic cell system of the present embodiment by performing aforesaid operations elimination except using one from control plate pipe
Reason two with during upper battery modules present in battery charge and discharge process the problem of uniformity difference outside, can be with
Go to avoid by the integral structure layout of battery, i.e., connect battery mould with material copper bar using formed objects as far as possible
Block, some of being tried not between the same battery module being connected from control plate are connected with wire, some copper
Row's connection connection, the otherness for the battery module that the battery module for avoiding wire from connecting connects with copper bar cause electricity
Voltage error between the monomer of pond, and battery module will control their phases when being connected with copper bar by nut
Moment of torsion between mutually, is allowed to identical.
In the present embodiment, multiple battery modules can make to be connected by copper bar or wire.In electrokinetic cell system
In system, multiple battery modules can be series, parallel or series-parallel connection.
Furthermore the embodiment of the present invention additionally provides a kind of vehicle, the power electric of any of the above-described embodiment is provided with
Cell system.
Based on vehicle provided in an embodiment of the present invention, the electrokinetic cell of any of the above-described embodiment of the present invention is provided with
System, its by eliminate use one from control board management two with during upper battery modules in battery charge and discharge process
Present in uniformity difference the problem of, can according to from control plate actual acquisition ability configure battery module, subtract
From the quantity of control plate in few battery management system, so as to save resource, cost is reduced.
The embodiments of the invention provide following technical scheme：
1st, a kind of battery management method, including：
First voltage value is worth to according to first group of voltage, first group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage for the battery cell being connected in each battery module with other battery modules；
Second voltage value is worth to according to second group of voltage, second group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage of battery cell in each battery module in addition to the battery cell being connected with other battery modules；
According to first voltage value and second voltage value offset value calculation；
The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
2nd, the method according to 1, it is described that first voltage value is worth to according to first group of voltage, be specially
The average value of first group of magnitude of voltage is calculated as first voltage value.
3rd, the method according to 2, it is described that second voltage value is worth to according to second group of voltage, be specially
The average value of second group of magnitude of voltage is calculated as second voltage value.
4th, the method according to 3, it is described according to first voltage value and second voltage value offset value calculation,
Including：
The difference for calculating first voltage value and second voltage value obtains voltage difference；
The absolute value of voltage difference is obtained as offset.
5th, the method according to 4, the voltage with offset to battery cell in first group of magnitude of voltage
Value compensates, including：
Detect the current working condition of electrokinetic cell system；
If electrokinetic cell system is currently at charged state, each magnitude of voltage in first group of magnitude of voltage is judged
Whether the first preset value is more than；
If some magnitude of voltage in first group of magnitude of voltage is more than the first preset value, compensation is subtracted with the magnitude of voltage
Value；
If electrokinetic cell system is currently at discharge condition, each magnitude of voltage in first group of magnitude of voltage is judged
Whether the second preset value is less than；
If some magnitude of voltage in first group of magnitude of voltage is less than the second preset value, with the magnitude of voltage plus compensation
Value.
6th, the method according to 1 to 5 any one, it is described that first electricity is worth to according to first group of voltage
Before pressure value, in addition to：
Gather the magnitude of voltage of battery cell in each battery module of electrokinetic cell system；
Whether the battery cell for judging current collection voltages value is to connect in each battery module with other battery modules
The battery cell connect；
If the battery cell of current collection voltages value is the electricity being connected in each battery module with other battery modules
Pond monomer, the magnitude of voltage of collection is stored to first group of magnitude of voltage；
If the battery cell of current collection voltages value is not what is be connected in each battery module with other battery modules
Battery cell, the magnitude of voltage of collection is stored to second group of magnitude of voltage.
7th, a kind of battery management system, including：
First processing units, for being worth to first voltage value, first group of voltage according to first group of voltage
It is worth the magnitude of voltage for the battery cell being connected in each battery module for electrokinetic cell system with other battery modules；
Second processing unit, for being worth to second voltage value, second group of voltage according to second group of voltage
It is worth the electricity in addition to the battery cell being connected with other battery modules in each battery module for electrokinetic cell system
The magnitude of voltage of pond monomer；
Compensating unit, for according to first voltage value and second voltage value offset value calculation；And with offset pair
The magnitude of voltage of battery cell compensates in first group of magnitude of voltage.
8th, the battery management system according to 7, the first processing units, specifically for calculating first
The average value of group magnitude of voltage is as first voltage value.
9th, the battery management system according to 8, the second processing unit, specifically for calculating second
The average value of group magnitude of voltage is as second voltage value.
10th, the battery management system according to 9, the compensating unit include：
Computing module, the difference for calculating first voltage value and second voltage value obtain voltage difference；
Acquisition module, for obtaining the absolute value of voltage difference as offset.
11st, the battery management system according to 10, the compensating unit also include：
Detection module, the working condition current for detecting electrokinetic cell system；
Judge module, for the testing result according to detection module, if electrokinetic cell system is currently at charging
State, judges whether each magnitude of voltage in first group of magnitude of voltage is more than the first preset value；If electrokinetic cell
System is currently at discharge condition, and it is pre- to judge whether each magnitude of voltage in first group of magnitude of voltage is less than second
If value；
Execution module, for the judged result according to judge module, if some electricity in first group of magnitude of voltage
Pressure value is more than the first preset value, and offset is subtracted with the magnitude of voltage；If some electricity in first group of magnitude of voltage
Pressure value is less than the second preset value, and offset is added with the magnitude of voltage.
12nd, the battery management system according to 7 to 11 any one, in addition to：
Collecting unit, the magnitude of voltage of battery cell in each battery module for gathering electrokinetic cell system；
Judging unit, for judge current collection voltages value battery cell whether be in each battery module with its
The battery cell of its battery module connection；
Execution unit, for the judged result according to the judging unit；If the battery of current collection voltages value
Monomer is the battery cell that is connected with other battery modules in each battery module, by the magnitude of voltage of collection store to
First group of magnitude of voltage；If the battery cell of current collection voltages value be not in each battery module with other battery moulds
The battery cell of block connection, the magnitude of voltage of collection is stored to second group of magnitude of voltage.
13rd, a kind of electrokinetic cell system, including：Battery management system according to 7 to 12 any one
System.
14th, the electrokinetic cell system according to 13, in addition to：Multiple battery modules, the multiple electricity
Pond module is connected；The battery management system includes：One master control borad and it is multiple from control plate；Wherein, it is each
It is connected described in individual from control plate with two battery modules described above, for gathering electricity in connected battery module
The magnitude of voltage of pond monomer；The master control borad is connected with all from control plate, for performing following operation：
First voltage value is worth to according to first group of voltage, first group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage for the battery cell being connected in each battery module with other battery modules；
Second voltage value is worth to according to second group of voltage, second group of magnitude of voltage is electrokinetic cell system
The magnitude of voltage of battery cell in each battery module in addition to the battery cell being connected with other battery modules；
According to first voltage value and second voltage value offset value calculation；
The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
15th, the electrokinetic cell system according to 14, the multiple battery module pass through copper bar or wire phase
Even.
16th, the electrokinetic cell system according to 14 or 15, the multiple battery module are series, parallel
Or series-parallel connection.
17th, a kind of vehicle, including：According to the electrokinetic cell system described in 13 to 16 any one.
Each embodiment is described by the way of progressive in this specification, and each embodiment stresses
It is the difference with other embodiments, same or analogous part cross-reference is between each embodiment
Can.For device embodiment, because it is substantially corresponding with embodiment of the method, so the comparison of description is simple
Single, the relevent part can refer to the partial explaination of embodiments of method.
Description of the invention in order to example and description for the sake of and provide, and be not exhaustively or will
The present invention is limited to disclosed form.Many modifications and variations are for the ordinary skill in the art
Obvious.Selection and description embodiment are to more preferably illustrate the principle and practical application of the present invention, and make
One of ordinary skill in the art is it will be appreciated that the present invention repaiies so as to design suitable for special-purpose with various
The various embodiments changed.
Claims (10)
- A kind of 1. battery management method, it is characterised in that including：First voltage value is worth to according to first group of voltage, first group of magnitude of voltage is electrokinetic cell system The magnitude of voltage for the battery cell being connected in each battery module with other battery modules；Second voltage value is worth to according to second group of voltage, second group of magnitude of voltage is electrokinetic cell system The magnitude of voltage of battery cell in each battery module in addition to the battery cell being connected with other battery modules；According to first voltage value and second voltage value offset value calculation；The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
- 2. according to the method for claim 1, it is characterised in that described to be obtained according to first group of magnitude of voltage To first voltage value, the average value of first group of magnitude of voltage is specially calculated as first voltage value.
- 3. according to the method for claim 2, it is characterised in that described to be obtained according to second group of magnitude of voltage To second voltage value, the average value of second group of magnitude of voltage is specially calculated as second voltage value.
- 4. according to the method for claim 3, it is characterised in that described according to first voltage value and the Two magnitude of voltage offset value calculations, including：The difference for calculating first voltage value and second voltage value obtains voltage difference；The absolute value of voltage difference is obtained as offset.
- 5. according to the method for claim 4, it is characterised in that described electric to first group with offset The magnitude of voltage of battery cell compensates in pressure value, including：Detect the current working condition of electrokinetic cell system；If electrokinetic cell system is currently at charged state, each magnitude of voltage in first group of magnitude of voltage is judged Whether the first preset value is more than；If some magnitude of voltage in first group of magnitude of voltage is more than the first preset value, compensation is subtracted with the magnitude of voltage Value；If electrokinetic cell system is currently at discharge condition, each magnitude of voltage in first group of magnitude of voltage is judged Whether the second preset value is less than；If some magnitude of voltage in first group of magnitude of voltage is less than the second preset value, with the magnitude of voltage plus compensation Value.
- 6. according to the method described in claim 1 to 5 any one, it is characterised in that described according to One group of voltage is worth to before first voltage value, in addition to：Gather the magnitude of voltage of battery cell in each battery module of electrokinetic cell system；Whether the battery cell for judging current collection voltages value is to connect in each battery module with other battery modules The battery cell connect；If the battery cell of current collection voltages value is the electricity being connected in each battery module with other battery modules Pond monomer, the magnitude of voltage of collection is stored to first group of magnitude of voltage；If the battery cell of current collection voltages value is not what is be connected in each battery module with other battery modules Battery cell, the magnitude of voltage of collection is stored to second group of magnitude of voltage.
- A kind of 7. battery management system, it is characterised in that including：First processing units, for being worth to first voltage value, first group of voltage according to first group of voltage It is worth the magnitude of voltage for the battery cell being connected in each battery module for electrokinetic cell system with other battery modules；Second processing unit, for being worth to second voltage value, second group of voltage according to second group of voltage It is worth the electricity in addition to the battery cell being connected with other battery modules in each battery module for electrokinetic cell system The magnitude of voltage of pond monomer；Compensating unit, for according to first voltage value and second voltage value offset value calculation；And with offset pair The magnitude of voltage of battery cell compensates in first group of magnitude of voltage.
- A kind of 8. electrokinetic cell system, it is characterised in that including：Battery according to claim 7 Management system.
- 9. electrokinetic cell system according to claim 8, it is characterised in that also include：Multiple electricity Pond module, the multiple battery module are connected；The battery management system includes：One master control borad and multiple From control plate；Wherein, it is connected described in each from control plate with two battery modules described above, for gathering The magnitude of voltage of battery cell in the battery module of connection；The master control borad is connected with all from control plate, for holding Row is following to be operated：First voltage value is worth to according to first group of voltage, first group of magnitude of voltage is electrokinetic cell system The magnitude of voltage for the battery cell being connected in each battery module with other battery modules；Second voltage value is worth to according to second group of voltage, second group of magnitude of voltage is electrokinetic cell system The magnitude of voltage of battery cell in each battery module in addition to the battery cell being connected with other battery modules；According to first voltage value and second voltage value offset value calculation；The magnitude of voltage of battery cell in first group of magnitude of voltage is compensated with offset.
- A kind of 10. vehicle, it is characterised in that including：Electrokinetic cell according to claim 8 or claim 9 System.
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| WO2023117556A1 (en) | 2021-12-23 | 2023-06-29 | Renault S.A.S | Method and system for managing a battery device of an electric or hybrid vehicle containing a voltage measurement of the cells connected to an interconnection bar |
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