CN107369859A - A kind of electric vehicle battery system charging and discharging method - Google Patents
A kind of electric vehicle battery system charging and discharging method Download PDFInfo
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- CN107369859A CN107369859A CN201610311601.3A CN201610311601A CN107369859A CN 107369859 A CN107369859 A CN 107369859A CN 201610311601 A CN201610311601 A CN 201610311601A CN 107369859 A CN107369859 A CN 107369859A
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- 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
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- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A kind of electric vehicle battery system charging method of the present invention, comprises the following steps：101st, battery management system detects the magnitude of voltage of the cell of each battery pack in N number of battery pack；Step 102, battery management system judge whether the summation of the current value of N number of battery pack requests charging is more than one and presets total charging current value；If so, then enter following steps 103；If it is not, then enter following steps 104；Step 103, battery management system control to be charged using presetting total charging current as each battery pack；Step 104, battery management system control the summation using the current value of N number of battery pack requests charging to be charged as each battery pack；Meanwhile battery management system detects the magnitude of voltage of the cell of each Battery pack group, when detecting that the voltage of magnitude of voltage highest cell of one of which is equal to upper voltage limit, battery management system cuts off the relay of N number of battery pack.The present invention also provides a kind of electric vehicle battery system charging method.
Description
Technical field
The invention belongs to electric vehicle engineering field, more particularly to a kind of electric vehicle battery system charging and discharging side
Method.
Background technology
Electric automobile is because its low-carbon environment-friendly performance has widely been promoted by more next, especially current industrial development and fuel oil
Automobile, which increases sharply, causes environmental pollution to become very serious, and electric automobile undoubtedly serves important work on ambient environment pollution is slowed down
With.Core component of the battery system as electric automobile, its security performance directly determine that automobile is safe to use, and battery system is general
Battery management system (the battery management being electrically connected with including the battery pack by multiple series connection and with battery pack
System, BMS), a relay is set in each battery pack and each battery pack carries out connection in series-parallel by multiple cells and
Into, when being charged to multiple battery packs, the relay closure of each battery pack, and set a total charged electrical flow and enter as each battery
Row charging, while BMS detects the voltage of cell in each battery pack, if the voltage of this group of cell reaches the upper of cut-out
During voltage limit, the high current situation block system relay directly in total charged electrical flow.Likewise, in multiple battery power discharges,
The relay closure of each battery pack, one total discharge current amount of setting causes each battery power discharge, while BMS detects each battery pack
The voltage of interior cell, if the voltage of this group of cell reaches the lower voltage limit of cut-out, directly in total discharge current
The high current situation of amount cuts off the relay.Above charging and discharging process all easily cause relay life reduce, it is necessary to through
Relay is often changed, security performance is low, improves cost.
The content of the invention
It is an object of the invention to for the technical problem present on, there is provided charging current in the course of charging and discharging
, can be with block system relay in the case of low current so as to the batteries of electric automobile of effective protective relay and discharge current is gradually reduced
System charging and discharging method.
To achieve the above object, the present invention provides a kind of step electric vehicle battery system charging method, including following step
Suddenly：
101st, battery management system detects the magnitude of voltage of the cell of each battery pack in N number of battery pack；If the electricity
When the magnitude of voltage highest cell of pond group is more than the first default ceiling voltage and is less than upper voltage limit, setting the battery pack please
The current value for asking charging is the first preset charged electric current；If it is default that the magnitude of voltage highest cell of the battery pack is more than second
Ceiling voltage and during less than the first default ceiling voltage, the current value for setting battery pack requests charging is electric for the second preset charged
Stream；If the magnitude of voltage highest cell of the battery pack is more than the 3rd default ceiling voltage and less than the second default ceiling voltage
When, the current value of request charging of the battery pack is set as the 3rd preset charged electric current；If the magnitude of voltage of the battery cell group
When highest cell is less than the 3rd default ceiling voltage, the current value of group request charging is set as the 4th preset charged electricity
Stream；
It is default that step 102, battery management system judge whether the summation of the current value of N number of battery pack requests charging is more than one
Total charging current value；If so, then enter following steps 103；If it is not, then enter following steps 104；
Step 103, battery management system control using preset total charging current is charged as each battery pack, while circulate into
The row step 101 and step 102, until entering step 104；
Step 104, battery management system control the summation using the current value of N number of battery pack requests charging to enter as each battery pack
Row charging；Meanwhile battery management system detects the magnitude of voltage of the cell of each Battery pack group, when detecting one of which
When the voltage of magnitude of voltage highest cell is equal to upper voltage limit, battery management system cuts off the relay of N number of battery pack.
The present invention also provides a kind of electric vehicle battery system charging method, comprises the following steps：
Step 201, battery management system detect the magnitude of voltage of the cell of each Battery pack group in N number of battery pack；If
When the minimum cell of the magnitude of voltage of the battery pack is more than the first default minimum voltage, the electricity of battery pack requests electric discharge is set
Flow valuve is the first default discharge current；If the minimum cell of the magnitude of voltage of the battery pack be more than the second default minimum voltage and
During less than the first default minimum voltage, the current value of battery pack requests electric discharge is set as the second default discharge current；If the electricity
The minimum cell of the magnitude of voltage of pond group is more than the 3rd default minimum voltage and during less than the second default minimum voltage, and setting should
The current value of the request electric discharge of battery pack is the 3rd default discharge current；If the minimum cell of the magnitude of voltage of the battery pack is big
In lower voltage limit and during less than the 3rd default ceiling voltage, the current value for setting group request electric discharge is electric for the 4th default electric discharge
Stream；
It is default that step 202, battery management system judge whether the summation of the current value of N number of battery pack requests electric discharge is more than one
Total discharge current value；If so, then enter following steps 203；If it is not, then enter following steps 204；
Step 203, battery management system control N number of battery pack to be discharged to preset total discharge current, at the same circulate into
The row step 201 and step 202, until entering step 204；
Step 204, battery management system control N number of battery pack to ask the summation of the current value of electric discharge to be discharged；Together
When, battery management system detects the magnitude of voltage of the cell of each Battery pack group, when detecting the magnitude of voltage of one of which most
When the voltage of low cell is equal to lower voltage limit, battery management system cuts off the relay of N number of battery pack, and each battery pack is stopped
Only discharge.
The beneficial effects of the invention are as follows：Electrical automobile battery system charging method of the present invention, each electricity is detected in charging process
The monomer battery voltage of pond group, and set according to the cell of maximum voltage value the request charging current of the battery, with filling
The progress of electricity, monomer battery voltage rise, preset total charging current and decline, when reaching cut-out condition, presetting total charging current can
Descend to very small, at this point it is possible to cut off the relay of each battery pack at low currents, relay life improves, drop
Low cost；Reduce and change relay number, it is safe；Electrical automobile battery system charging method of the present invention, examine in discharge process
The monomer battery voltage of each battery pack is surveyed, and the request electric discharge electricity of the battery is set according to the cell of minimum voltage value
Stream, with the progress of electric discharge, monomer battery voltage declines, and presets total discharge current and declines, default always to put when reaching cut-out condition
Electric current can descend to it is very small, at this point it is possible to cut off the relay of each battery pack, relay life at low currents
Improve, reduce cost；Reduce and change relay number, it is safe.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of electric vehicle battery system charging and discharging method provided by the invention.
Fig. 2 is a kind of FB(flow block) of electric vehicle battery system charging method provided by the invention.
Fig. 3 is a kind of FB(flow block) of electric vehicle battery system charging method provided by the invention.
Embodiment
In order that the purpose of the present invention, technical scheme and advantageous effects become apparent from understanding, below in conjunction with accompanying drawing and
Embodiment, the present invention will be described in further detail.It should be appreciated that the specific implementation described in this specification
Mode is not intended to limit the present invention just for the sake of explaining the present invention.
A kind of as shown in figure 1, schematic diagram of electric vehicle battery system charging and discharging method provided by the invention.It is described
Electric vehicle battery system charging and discharging method is used for the charging and discharging process for controlling electric vehicle battery system 100.
The battery pack that the electric vehicle battery system 100 includes battery management system 10 and N number of (N is natural number) connects
20.One relay 22 is set in each battery pack 20 and each battery pack 20 carries out connection in series-parallel by multiple cells 24 and
Into.In present embodiment, the battery management system 10 by CAN (Controller Area Network, CAN) buses with
Each battery pack 20 is electrically connected with.The battery management system 10 can gather the ginseng such as voltage, electric current, temperature of each battery pack 20
Count and each battery pack can be controlled, such as when each battery pack 20 carries out charge or discharge, relay corresponding to control
Device 22 is switched on or off.
Please refer to Fig. 1 and Fig. 2, the present invention provides a kind of electric vehicle battery system charging method, including following step
Suddenly：
Step 101, battery management system 10 detect the voltage of the cell 24 of each battery pack 20 in N number of battery pack
Value；If specifically, the magnitude of voltage highest cell 24 of the battery pack 20 is more than the first default ceiling voltage and is less than the upper limit
During voltage, the current value of the battery pack 20 request charging is set as the first preset charged electric current；If the magnitude of voltage of the battery pack 20
When highest cell 24 is more than the second default ceiling voltage and ceiling voltage is preset less than first, setting the battery pack 20 please
The current value for asking charging is the second preset charged electric current；If the magnitude of voltage highest cell 24 of the battery pack 20 is more than the 3rd
When presetting ceiling voltage and ceiling voltage is preset less than second, the current value for setting the request charging of the battery pack is preset as the 3rd
Charging current；If the magnitude of voltage highest cell 24 of the battery cell group 20 is less than the 3rd default ceiling voltage, if
The current value of fixed group request charging is the 4th preset charged electric current；In present embodiment, the 4th preset charged electric current>The
Three preset charged electric currents>Second preset charged electric current>First preset charged electric current.
It is pre- that step 102, battery management system judge whether the summation of the current value of the N number of request of battery pack 20 charging is more than one
If total charging current value；If so, then enter following steps 103；If it is not, then enter following steps 104；
Step 103, battery management system 10 control charging device (such as charging pile) to preset total charging current as each electricity
Pond group 20 is charged, while is circulated and carried out the step 101 and step 102, until entering step 104；
Step 104, battery management system 10 control the electricity that charging device (such as charging pile) is charged with N number of battery pack requests
The summation of flow valuve is that each battery pack 20 is charged；Meanwhile battery management system 10 detects the monomer electricity of each Battery pack group 20
The magnitude of voltage in pond 24, when detecting that the voltage of magnitude of voltage highest cell of one of which is equal to upper voltage limit, battery
Management system cuts off the relay 22 of N number of battery pack 20, i.e. battery management system controls charging device to stop entering for each battery pack
Row charging.
In present embodiment, the cell 24 is lithium battery, and its upper voltage limit is 3.65 volts (V), and described first is pre-
If ceiling voltage is 3.6V, the described second default ceiling voltage is 3.55 volts, and the described 3rd default ceiling voltage is 3.50V.
The first preset charged electric current is 10A, and the second preset charged electric current is 50A, the 3rd preset charged
Electric current is 100A, and the 4th preset charged electric current is 200A.Default total charging current is 398A.The N is four.
Above electric vehicle battery system charging method is illustrated by taking four battery packs 20 as an example below,
The cell 24 of each Battery pack group 20 in four battery packs is detected for step 101, battery management system 10
Magnitude of voltage；Such as the magnitude of voltage highest cell 24 of first battery pack be more than the first default ceiling voltage 3.60V and
During less than upper voltage limit 3.65V, the current value of first battery pack requests charging is set as the first preset charged electric current 10A；
The magnitude of voltage highest cell of second battery pack is more than the second default ceiling voltage 3.55V and is less than the first predeterminated voltage
When 3.60, the current value of second battery pack requests charging is set as the second preset charged electric current 50A；3rd battery pack
When magnitude of voltage highest cell is more than the 3rd default ceiling voltage 3.50V and is less than the second predeterminated voltage 3.55, setting should
The current value of 3rd battery pack requests charging is the 3rd preset charged electric current 100A；The magnitude of voltage highest of 4th battery pack
When cell is less than the 3rd default ceiling voltage 3.50V, the current value of the 4th battery pack requests charging is set as the 4th
Preset charged electric current 200A；
Judge whether the summation of the current value of four battery pack requests chargings is more than for step 102, battery management system
One presets total charging current value, and the summation of the current value of four battery pack requests charging as exemplified above is 10A+50A+100A+
200A=360A, it is 398A less than default total charging current, therefore enters step 104,
The current value to be charged for step 104, the control charging device of battery management system 10 with four battery pack requests
Summation 360A is that four battery packs are charged；Meanwhile battery management system detects the electricity of the cell of each Battery pack group
Pressure value, such as when detecting that the voltage of magnitude of voltage highest cell of first battery pack is equal to upper voltage limit 3.65V,
Battery management system cuts off the relay of four battery packs.
It is understood that for step 101, such as the magnitude of voltage highest cell of first to fourth battery pack is equal
When ceiling voltage 3.50V is preset more than the 3rd and being less than the second predeterminated voltage 3.55V, setting first to fourth battery pack please
The current value for asking charging is the 3rd preset charged electric current 100A；The electricity so to be charged for step 102, four battery pack requests
The summation of flow valuve is 100A+100A+100A+100A=400A, is 398A more than default total charging current, therefore enter step
103, control charging device to enter to preset total charging current 398A as each battery pack 20 for step 103, battery management system 10
Row charging, while circulate and carry out the step 101 and step 102, until entering step 104.
Electrical automobile battery system charging method of the present invention, the monomer battery voltage of each battery pack is detected in charging process,
And the request charging current of the battery is set according to the cell of maximum voltage value, with the progress of charging, cell electricity
Pressure rise, preset total charging current and decline, when reaching cut-out condition, preset total charging current can descend to it is very small, now,
The relay of each battery pack can be cut off at low currents, and relay life improves, and reduces cost；Reduce and change relay
Number, it is safe.
Fig. 1 and Fig. 3 is referred to, the present invention also provides a kind of electric vehicle battery system charging method, comprised the following steps：
Step 201, battery management system 10 detect the voltage of the cell 24 of each Battery pack group 20 in N number of battery pack
Value；If specifically, when the minimum cell 24 of the magnitude of voltage of the battery pack 20 is more than the first default minimum voltage, the electricity is set
The current value of the request electric discharge of pond group 20 is the first default discharge current；If the minimum cell 24 of the magnitude of voltage of the battery pack 20
During more than the second default minimum voltage and less than the first default minimum voltage, set the current value of the battery pack 20 request electric discharge as
Second default discharge current；If the minimum cell 24 of the magnitude of voltage of the battery pack 20 is more than the 3rd default minimum voltage and small
When the second default minimum voltage, the current value of request electric discharge of the battery pack is set as the 3rd default discharge current；If the electricity
The minimum cell 24 of the magnitude of voltage of pond group 20 is more than lower voltage limit and during less than the 3rd default ceiling voltage, and setting the group please
The current value for asking electric discharge is the 4th default discharge current；In present embodiment, the described 4th default discharge current<3rd default puts
Electric current<Second default discharge current<First default discharge current.
It is pre- that step 202, battery management system judge whether the summation of the current value of the N number of request of battery pack 20 electric discharge is more than one
If total discharge current value；If so, then enter following steps 203；If it is not, then enter following steps 204；
Step 203, battery management system 10 control N number of battery pack to be discharged to preset total discharge current, circulate simultaneously
The step 201 and step 202 are carried out, until entering step 204；
Step 204, battery management system 10 control N number of battery pack to ask the summation of the current value of electric discharge to be discharged；
Meanwhile battery management system 10 detects the magnitude of voltage of the cell 24 of each Battery pack group 20, when detecting one of which
When the voltage of the minimum cell of magnitude of voltage is equal to lower voltage limit, battery management system cuts off the relay of N number of battery pack 20
22, each battery pack stops electric discharge.
In present embodiment, the cell 24 is lithium battery, and its lower voltage limit is 2.60 volts (V), and described first is pre-
If minimum voltage is 2.90V, the described second default minimum voltage is 2.80 volts, and the described 3rd default minimum voltage is 2.70V.
Described first default discharge current be 200A, and the described second default discharge current is 100A, and the described 3rd presets and put
Electric current is 50A, and the described 4th default discharge current is 10A.Default total discharge current is 398A.The N is four.
Above electric vehicle battery system charging method is illustrated by taking four battery packs 20 as an example below,
The cell 24 of each Battery pack group 20 in four battery packs is detected for step 201, battery management system 10
Magnitude of voltage；Such as the magnitude of voltage minimum cell 24 of first battery pack is when being more than the first default minimum voltage 2.90V,
The current value of first battery pack requests electric discharge is set as the first preset charged electric current 200A；The magnitude of voltage of second battery pack
Minimum cell is more than the second default minimum voltage 2.80V and during less than the first default minimum voltage 2.90V, set this
The current value of two battery pack requests electric discharges is the second default discharge current 100A；The minimum list of the magnitude of voltage of 3rd battery pack
When body battery is more than the 3rd default minimum voltage 2.70V and minimum voltage 2.80V is preset less than second, the 3rd battery is set
The current value of group request electric discharge is the 3rd default discharge current 50A；The cell that the magnitude of voltage of 4th battery pack is minimum is big
In lower voltage limit 2.60V and when being less than three predeterminated voltages 2.70, set the current value of the 4th battery pack requests charging as
4th preset charged electric current 10A；
Judge whether the summation of the current value of four battery pack requests electric discharges is more than for step 202, battery management system
One presets total discharge current value, and the summation of the current value of four battery pack requests electric discharge as exemplified above is 200A+100A+50A+
10A=360A, it is 398A less than default total discharge current, therefore enters step 204,
Four battery packs are controlled for step 204, battery management system 10 to ask the summation 360A of the current value of electric discharge
Discharged for four battery packs；Meanwhile battery management system detects the magnitude of voltage of the cell of each Battery pack group, such as
When the voltage of the minimum cell of the magnitude of voltage for detecting one of battery pack is equal to lower voltage limit 2.60V, cell tube
Manage the relay of four battery packs of system shutdown.
It is understood that for step 201, for example, first to fourth battery pack magnitude of voltage it is minimum cell it is equal
Minimum voltage 2.80V default more than second and when being less than the first predeterminated voltage 2.90, set this and first fill to individual battery pack requests
The current value of electricity is the second default discharge current 100A；The current value so to be charged for step 202, four battery pack requests
Summation be 100A+100A+100A+100A=400A, be 398A more than default total discharge current, therefore enter step 203,
For step 203, battery management system 10 control each battery pack with preset total discharge current 398A charge, while circulate into
The row step 201 and step 202, until entering step 204.
Electrical automobile battery system charging method of the present invention, the monomer battery voltage of each battery pack is detected in discharge process,
And the request discharge current of the battery is set according to the cell of minimum voltage value, with the progress of electric discharge, cell electricity
Drops, preset total discharge current and decline, when reaching cut-out condition, preset total discharge current can descend to it is very small, now,
The relay of each battery pack can be cut off at low currents, and relay life improves, and reduces cost；Reduce and change relay
Number, it is safe.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, it is included within the scope of the present invention.
Claims (8)
1. a kind of electric vehicle battery system charging method, comprises the following steps：
Step 101, battery management system detect the magnitude of voltage of the cell of each battery pack in N number of battery pack；If the electricity
When the magnitude of voltage highest cell of pond group is more than the first default ceiling voltage and is less than upper voltage limit, setting the battery pack please
The current value for asking charging is the first preset charged electric current；If it is default that the magnitude of voltage highest cell of the battery pack is more than second
Ceiling voltage and during less than the first default ceiling voltage, the current value for setting battery pack requests charging is electric for the second preset charged
Stream；If the magnitude of voltage highest cell of the battery pack is more than the 3rd default ceiling voltage and less than the second default ceiling voltage
When, the current value of request charging of the battery pack is set as the 3rd preset charged electric current；If the magnitude of voltage of the battery cell group
When highest cell is less than the 3rd default ceiling voltage, the current value of group request charging is set as the 4th preset charged electricity
Stream；
Step 102, battery management system judge whether the summation of the current value of N number of battery pack requests charging is default more than one and always filled
Electric current value；If so, then enter following steps 103；If it is not, then enter following steps 104；
Step 103, battery management system control to be charged using presetting total charging current as each battery pack, while is circulated and carried out institute
Step 101 and step 102 are stated, until entering step 104；
Step 104, battery management system control the summation using the current value of N number of battery pack requests charging to be filled as each battery pack
Electricity；Meanwhile battery management system detects the magnitude of voltage of the cell of each Battery pack group, when the voltage for detecting one of which
When the voltage of value highest cell is equal to upper voltage limit, battery management system cuts off the relay of N number of battery pack.
2. electric vehicle battery system charging method as claimed in claim 1, it is characterised in that：The 4th preset charged electricity
Stream>3rd preset charged electric current>Second preset charged electric current>First preset charged electric current.
3. electric vehicle battery system charging method as claimed in claim 1, it is characterised in that：The first preset charged electricity
It is 50A to flow for 10A, the second preset charged electric current, and the 3rd preset charged electric current is 100A, the 4th preset charged
Electric current is 200A.Default total charging current is 398A, and the N is four.
4. electric vehicle battery system charging method as claimed in claim 3, it is characterised in that：The upper voltage limit is
3.65V, the described first default ceiling voltage are 3.6V, and the described second default ceiling voltage is 3.55 volts, and the described 3rd presets most
High voltage is 3.50V.
5. a kind of electric vehicle battery system charging method, comprises the following steps：
Step 201, battery management system detect the magnitude of voltage of the cell of each Battery pack group in N number of battery pack；If the electricity
When the minimum cell of the magnitude of voltage of pond group is more than the first default minimum voltage, the current value of battery pack requests electric discharge is set
For the first default discharge current；If the minimum cell of the magnitude of voltage of the battery pack is more than the second default minimum voltage and is less than
During the first default minimum voltage, the current value of battery pack requests electric discharge is set as the second default discharge current；If the battery pack
The minimum cell of magnitude of voltage be more than the 3rd default minimum voltage and during less than the second default minimum voltage, set the battery
The current value of the request electric discharge of group is the 3rd default discharge current；If under the minimum cell of the magnitude of voltage of the battery pack is more than
Voltage limit and during less than the 3rd default ceiling voltage, the current value for setting group request electric discharge presets discharge current for the 4th；
Step 202, battery management system judge whether the summation of the current value of N number of battery pack requests electric discharge is default more than one and always put
Electric current value；If so, then enter following steps 203；If it is not, then enter following steps 204；
Step 203, battery management system control N number of battery pack to be discharged to preset total discharge current, while circulate and carry out institute
Step 201 and step 202 are stated, until entering step 204；
Step 204, battery management system control N number of battery pack to ask the summation of the current value of electric discharge to be discharged；Meanwhile electricity
Pond management system detects the magnitude of voltage of the cell of each Battery pack group, when the list that the magnitude of voltage for detecting one of which is minimum
When the voltage of body battery is equal to lower voltage limit, battery management system cuts off the relay of N number of battery pack, and each battery pack stops putting
Electricity.
6. electric vehicle battery system charging method as claimed in claim 5, it is characterised in that：Described 4th default electric discharge electricity
Stream<3rd default discharge current<Second default discharge current<First default discharge current.
7. electric vehicle battery system charging method as claimed in claim 6, it is characterised in that：Described first default electric discharge electricity
Flow for 200A, the described second default discharge current be 100A, and the described 3rd default discharge current is 50A, and the described 4th presets and put
Electric current is 10A.Default total discharge current is 398A；The N is four.
8. electric vehicle battery system charging method as claimed in claim 7, it is characterised in that：The lower voltage limit is
2.60V, the described first default minimum voltage are 2.90V, and the described second default minimum voltage is 2.80 volts, and the described 3rd presets most
Low-voltage is 2.70V.
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| CN201610311601.3A CN107369859A (en) | 2016-05-12 | 2016-05-12 | A kind of electric vehicle battery system charging and discharging method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391473A (en) * | 2018-04-20 | 2019-10-29 | 罗伯特·博世有限公司 | Method for charging to electric flux storage unit |
| WO2023004673A1 (en) * | 2021-07-29 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Battery charging method, battery management system, and charging and discharging device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800344A (en) * | 2010-03-25 | 2010-08-11 | 江苏华富控股集团有限公司 | Charge method of lithium ion power storage battery |
| CN101953015A (en) * | 2009-01-07 | 2011-01-19 | 松下电器产业株式会社 | Battery set charging method and battery charging system |
| CN102934314A (en) * | 2011-04-25 | 2013-02-13 | 丰田自动车株式会社 | Cell pack |
| CN103051028A (en) * | 2012-12-31 | 2013-04-17 | 东风汽车股份有限公司 | Dynamic equalizing charging method for electric automobile |
| JP2013529455A (en) * | 2010-05-24 | 2013-07-18 | チャン、チュン−チエ | Advanced storage battery system |
| CN104733793A (en) * | 2015-04-21 | 2015-06-24 | 中投仙能科技（苏州）有限公司 | Sectional charging method of lithium ion battery |
-
2016
- 2016-05-12 CN CN201610311601.3A patent/CN107369859A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101953015A (en) * | 2009-01-07 | 2011-01-19 | 松下电器产业株式会社 | Battery set charging method and battery charging system |
| CN101800344A (en) * | 2010-03-25 | 2010-08-11 | 江苏华富控股集团有限公司 | Charge method of lithium ion power storage battery |
| JP2013529455A (en) * | 2010-05-24 | 2013-07-18 | チャン、チュン−チエ | Advanced storage battery system |
| CN102934314A (en) * | 2011-04-25 | 2013-02-13 | 丰田自动车株式会社 | Cell pack |
| CN103051028A (en) * | 2012-12-31 | 2013-04-17 | 东风汽车股份有限公司 | Dynamic equalizing charging method for electric automobile |
| CN104733793A (en) * | 2015-04-21 | 2015-06-24 | 中投仙能科技（苏州）有限公司 | Sectional charging method of lithium ion battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391473A (en) * | 2018-04-20 | 2019-10-29 | 罗伯特·博世有限公司 | Method for charging to electric flux storage unit |
| WO2023004673A1 (en) * | 2021-07-29 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Battery charging method, battery management system, and charging and discharging device |
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