CN108336783A - The control method of voltage difference between energy-storage system and battery cluster - Google Patents
The control method of voltage difference between energy-storage system and battery cluster Download PDFInfo
- Publication number
- CN108336783A CN108336783A CN201810114197.XA CN201810114197A CN108336783A CN 108336783 A CN108336783 A CN 108336783A CN 201810114197 A CN201810114197 A CN 201810114197A CN 108336783 A CN108336783 A CN 108336783A
- Authority
- CN
- China
- Prior art keywords
- battery cluster
- battery
- voltage
- threshold
- cluster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
Abstract
The present invention provides a kind of control method of voltage difference between energy-storage system and battery cluster, which can rapidly be safely completed the parallel process of battery cluster.The energy-storage system includes：At least one battery cluster, DC bus, control unit；Each battery cluster includes：Energy-storage battery and high-voltaghe compartment；High-voltaghe compartment includes BMS, main positive contactor, main negative contactor, preliminary filling contactor and preliminary filling resistance；Control unit is connect with BMS, and control unit is used for：If the pressure difference of the battery cluster of ceiling voltage and minimum voltage is more than preset first threshold in the battery cluster group enabled in battery cluster, pressure difference is controlled, to realize the parallel running of each battery cluster.By carrying out grade classification to the different voltage difference sizes between battery cluster in the embodiment of the present invention, the each battery cluster larger to voltage difference, the voltage difference carrying out active equalization battery cluster is controlled pressure difference, each battery cluster of energy-storage system is made to realize parallel running as early as possible.
Description
Technical field
The present invention relates to a kind of controlling parties of voltage difference between battery technology field more particularly to energy-storage system and battery cluster
Method.
Background technology
Lithium ion battery have many advantages, such as monomer voltage it is high, it is bigger than energy, have extended cycle life, therefore lithium ion battery just by
Gradually become the development trend of energy-storage system.Battery cluster by multiple lithium ion batteries connect with it is in parallel by way of form, series connection
Purpose be increase battery terminal voltage, purpose in parallel be increase battery capacity.Pass of the battery cluster as storage and release electric energy
Key member is the key equipment of energy-storage system, directly influences the safe and stable operation of energy-storage system.
It is influenced by lithium ion battery characteristic and battery cluster self structure, the internal resistance very little of battery cluster.If energy-storage system requires
When higher capacity, then multigroup battery cluster parallel running is needed.If between battery cluster in parallel, there are larger voltage difference, Jiu Hui
Larger circulation is formed between batteries in parallel connection cluster, influences the safe and stable operation of energy-storage system equipment, or even causes equipment damage.
It is directed to the circulation problem of battery cluster parallel running at present, the method mainly screened by battery cluster voltage allows voltage
Close battery cluster is in parallel.The method influences caused by can effectively reducing circulation caused by voltage difference, but between battery cluster
Battery cluster parallel running can not be then carried out when voltage difference is larger.
Invention content
The present invention provides a kind of control method of voltage difference between energy-storage system and battery cluster, has solved existing for battery
The problem of battery cluster parallel running can not be then carried out when voltage difference is larger between cluster.
In a first aspect, the present invention provides a kind of energy-storage system, including：
At least one battery cluster, DC bus, control unit；
Each the battery cluster includes：Energy-storage battery and high-voltaghe compartment；The high-voltaghe compartment includes：Battery management system BMS, master
Positive contactor, main negative contactor, preliminary filling contactor and preliminary filling resistance；The preliminary filling contactor and the preliminary filling resistance connect to be formed
The first branch, first branch formation the second branch in parallel with the positive contactor of the master, one end of the second branch and institute
The anode connection of energy-storage battery is stated, the other end of the second branch is connect with the anode of the DC bus；The master is negative to be connect
One end of tentaculum is connect with the cathode of the energy-storage battery, and the master bears the cathode of the other end and the DC bus of contactor
Connection；
Described control unit is connect with the BMS, and described control unit is used for：If the battery cluster enabled in the battery cluster
In group the pressure difference of the battery cluster of the battery cluster and minimum voltage of ceiling voltage be more than preset first threshold, then to the pressure difference into
Row control, to realize the parallel running of each battery cluster.
Second aspect, the present invention provide a kind of control method of voltage difference between battery cluster, are applied to energy-storage system, including：
At least one battery cluster, DC bus, control unit；Each the battery cluster includes：Energy-storage battery and high-voltaghe compartment；The high pressure
Case includes：Battery management system BMS, main positive contactor, main negative contactor, preliminary filling contactor and preliminary filling resistance；The preliminary filling connects
Tentaculum and the preliminary filling resistance connect to form the first branch, and the first branch is in parallel with the positive contactor of the master to form second
Road, one end of the second branch are connect with the anode of the energy-storage battery, the other end of the second branch and the direct current
The anode connection of busbar；One end that the master bears contactor is connect with the cathode of the energy-storage battery, and the master bears contactor
The other end is connect with the cathode of the DC bus；Described control unit is connect with the BMS；The method, including：
Determine the battery cluster group enabled in the battery cluster；The battery cluster group includes at least one enabled battery cluster；
If the pressure of the battery cluster of the battery cluster and minimum voltage of ceiling voltage in the battery cluster group enabled in the battery cluster
Difference is more than preset first threshold, then controls the pressure difference, to realize the parallel running of each battery cluster.
The control method of voltage difference between energy-storage system and battery cluster provided by the invention is applied to energy-storage system, including：Extremely
Few battery cluster, DC bus, a control unit；Each the battery cluster includes：Energy-storage battery and high-voltaghe compartment；The high-voltaghe compartment
Including：Battery management system BMS, main positive contactor, main negative contactor, preliminary filling contactor and preliminary filling resistance；The preliminary filling contact
Device and the preliminary filling resistance connect to form the first branch, and the first branch is in parallel with the positive contactor of the master to form second
Road, one end of the second branch are connect with the anode of the energy-storage battery, the other end of the second branch and the direct current
The anode connection of busbar；One end that the master bears contactor is connect with the cathode of the energy-storage battery, and the master bears contactor
The other end is connect with the cathode of the DC bus；Described control unit is connect with the BMS；Described control unit is specifically used
In：If the pressure difference of the battery cluster of the battery cluster and minimum voltage of ceiling voltage is more than in the battery cluster group enabled in the battery cluster
Preset first threshold then controls the pressure difference, to realize the parallel running of each battery cluster, in the above process
When pressure difference between battery cluster is larger, the voltage difference carrying out active equalization battery cluster is controlled pressure difference, keeps energy-storage system each
Battery cluster realizes parallel running as early as possible, is influenced caused by can effectively reducing circulation caused by voltage difference.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.
Fig. 1 is the overall construction drawing of energy-storage system provided in an embodiment of the present invention；
Fig. 2 is the control strategy main flow schematic diagram of one embodiment of energy-storage system in the embodiment of the present invention；
Fig. 3 is that the preliminary filling of exempting from of one embodiment of energy-storage system in the embodiment of the present invention controls sub-process schematic diagram；
Fig. 4 is that the preliminary filling of one embodiment of energy-storage system in the embodiment of the present invention controls sub-process schematic diagram；
Fig. 5 is that the maintenance of the another embodiment of energy-storage system in the embodiment of the present invention controls sub-process schematic diagram；
The flow diagram of one embodiment of control method of voltage difference between Fig. 6 battery clusters provided in an embodiment of the present invention.
Through the above attached drawings, it has been shown that the specific embodiment of the disclosure will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of this disclosure concept by any means with verbal description, but is by referring to specific embodiments
Those skilled in the art illustrate the concept of the disclosure.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
Term " first ", " second " in description and claims of this specification and the attached drawing etc. are for distinguishing
Different objects, rather than for describing particular order.In addition, term " comprising " and " having " and their any deformations, it is intended that
It is to cover and non-exclusive includes.Such as process, method, system, product or the equipment for containing series of steps or unit do not have
It is defined in the step of having listed or unit, but further includes the steps that optionally not listing or unit, or optionally also wrap
It includes for the intrinsic other steps of these processes, method, product or equipment or unit.
The general structure schematic diagram of Fig. 1 energy-storage systems provided in an embodiment of the present invention.As shown in Figure 1, the storage of the present embodiment
Can system include：
At least one battery cluster, DC bus, control unit；
Each the battery cluster includes：Energy-storage battery and high-voltaghe compartment；The high-voltaghe compartment includes：Battery management system BMS, master
Positive contactor, main negative contactor, preliminary filling contactor and preliminary filling resistance；The preliminary filling contactor and the preliminary filling resistance connect to be formed
The first branch, first branch formation the second branch in parallel with the positive contactor of the master, one end of the second branch and institute
The anode connection of energy-storage battery is stated, the other end of the second branch is connect with the anode of the DC bus；The master is negative to be connect
One end of tentaculum is connect with the cathode of the energy-storage battery, and the master bears the cathode of the other end and the DC bus of contactor
Connection；
Described control unit is connect with the BMS, and described control unit is used for：If the battery cluster enabled in the battery cluster
In group the pressure difference of the battery cluster of the battery cluster and minimum voltage of ceiling voltage be more than preset first threshold, then to the pressure difference into
Row control, to realize the parallel running of each battery cluster.
Specifically, energy-storage battery provides anode, cathode electric interfaces for storing or discharging electric energy；High-voltaghe compartment provides just
Pole, cathode electric interfaces；DC bus is used to collect the electric energy of each battery cluster, and DC bus is divided into positive DC busbar and cathode
DC bus；Use electric power cable connection, each battery cluster high-voltaghe compartment negative between the high-voltaghe compartment anode and positive DC busbar of each battery cluster
Electric power cable connection is used between pole and negative DC busbar.
Wherein, preliminary filling contactor KM3 connects to form first branch A with preliminary filling resistance, first branch A again with the positive contactor of master
KM1 parallel connections form the second branch B, and the second branch B is connected to by copper bar between energy-storage battery anode and high-voltaghe compartment anode；It is main negative
Contactor KM2 is connected to by copper bar between energy-storage battery cathode and high-voltaghe compartment cathode.
Control unit is used for：If the battery cluster and minimum voltage of ceiling voltage in the battery cluster group enabled in the battery cluster
Battery cluster pressure difference be more than preset first threshold, then the pressure difference is controlled, to realize each battery cluster
Parallel running.
BMS can be used for acquire energy-storage battery in each battery cell voltage, battery cluster enabled state, current measurement
The information such as value, voltage measuring value, the temperature of preliminary filling resistance, each contactor location status are realized and are handed over the information of control unit
Mutually, main positive contactor, main negative contactor, the actuation of preliminary filling contactor and disconnection etc. can be controlled.
Control unit controls time and the mode that each battery cluster is incorporated to DC bus in the embodiment of the present invention, avoids battery cluster
Between pressure difference generate loop current damage equipment.
Specifically, the battery cluster enabled at least one battery cluster is formed battery cluster group, the enabled battery cluster is determined
The battery cluster of the battery cluster of ceiling voltage and minimum voltage in group, if the pressure difference of ceiling voltage and minimum voltage is more than first
Threshold value then controls the pressure difference, so that pressure difference reduces, to realize the parallel connection of each battery cluster at least two battery clusters
Each battery cluster, i.e., be connected to by operation with DC bus.
In some embodiments, as shown in Fig. 2, control unit can specifically proceed as follows：
Step Z01, a BmsArray array BmsArray is defined, and is emptied；
Step Z02, the enabled state of battery cluster in each BMS is traversed, the enabled state by battery cluster in each BMS is true
Battery cluster as element the BmsArray arrays are added (BmsArray.add (BmsN) are indicated enabled state in figure
The BmsArray arrays are added as an element for genuine battery cluster)；
Step Z03, the element number BmsN for judging BmsArray arrays has following two kinds of situations：
If 1) BmsN values are equal to 1, step Z04 is executed；
If 2) BmsN values are more than 1, step Z05 is executed；
Step Z04, be closed main positive contactor KM1, be closed main negative contactor KM2, execute step Z08 (at this time only there are one
Battery cluster is enabled, does not have to consider pressure difference, is directly incorporated into DC bus)；
Step Z05, the voltage of the energy-storage battery of the battery cluster in BmsArray is determined, and to voltage according to from big to small
Sequence is ranked up；
Step Z06, calculate ceiling voltage, minimum voltage and ceiling voltage in BmsArray in each battery cluster with
Pressure differential deltap V between minimum voltage；
Step Z07, two threshold parameters, first threshold para1, second threshold para2, it is assumed that para1 is small are preset
In para2；The relationship for judging the pressure differential deltap V and para1, para2 has following three kinds of situations：
If 1) Δ V is less than or equal to para1, preliminary filling control sub-process is exempted from execution；
If 2) Δ V is more than para1 and Δ V is less than or equal to para2, executes preliminary filling and control sub-process；
If 3) Δ V is more than para2, executes and safeguard control sub-process；
Step Z08, control strategy main flow terminate.
Optionally, described control unit is specifically used for：
A：If the pressure difference is more than the first threshold, and, it is less than or equal to preset second threshold, then is closed highest electricity
Master in the battery cluster of pressure bears contactor；
B：If after preset first duration, the battery measurement voltage of the battery cluster measures the pressure difference of voltage with busbar
It is less than or equal to the second threshold and institute less than or equal to the second threshold and more than the first threshold or the pressure difference
The electric current stated between the cathode of DC bus and the cathode of the battery cluster is more than current threshold, then is closed in the battery cluster
Preliminary filling contactor；The battery measurement voltage is the voltage between the positive electrode and negative electrode of energy-storage battery in the battery cluster；It is described
Busbar measures the voltage between the cathode and the anode of the battery cluster mesohigh case that voltage is the energy-storage battery；
C：If after preset first duration, the battery measurement voltage of the battery cluster measures the pressure difference of voltage with busbar
Less than or equal to the first threshold, and the electric current between the cathode of the DC bus and the cathode of the battery cluster be less than or
Equal to the current threshold, then the positive contactor of master being closed in the battery cluster, and disconnect preliminary filling contactor；
The battery cluster group is updated, the A-C is repeated, until the battery cluster group is sky.
Optionally, described control unit, also particularly useful for：
After being closed the preliminary filling contactor in the battery cluster, and after preset second duration, if the preliminary filling contacts
The closure duration of device is less than or equal to preset time threshold, and the temperature of the preliminary filling resistance in the battery cluster is less than or equal to
Preset temperature threshold then repeats B or C.
The above process is the operating process that preliminary filling controls sub-process.As shown in Figure 4：
Step Y01, the maximum battery clusters of voltage V1 of energy-storage battery in BmsArray arrays are searched；
Step Y02, the master for being closed battery cluster described in step Y01 bears contactor KM2；
Step Y03, delay T3 (the first duration)；
Step Y04, the difference of the battery measurement voltage V2 of battery cluster described in step Y01 and busbar measurement voltage V3 are calculated
Absolute value abs (V2-V3)；The relationship for judging second threshold para2 described in abs (V2-V3) and step Z07, is divided to following two kinds
Situation：
If abs (V2-V3) is more than para2, step Y11 is executed；
If abs (V2-V3) is less than or equal to para2, step Y05 is executed；
Step Y05, judge the relationship of first threshold para1 described in abs (V2-V3) and step Z07, while judging direct current
The value of electric current I between the cathode of busbar and the cathode of the battery cluster is divided to following two kinds of situations：
If abs (V2-V3) is more than para1 or electric current I and is more than current threshold para3, step Y06 is executed；
If abs (V2-V3) is less than or equal to para1, and electric current I is less than or equal to the current threshold para3, executes step
Y08；
Step Y06, it is closed the preliminary filling contactor KM3 of battery cluster described in step Y01；
Step Y07, delay T4 (the second duration) judges that preliminary filling contactor KM3 is closed the temperature of duration t and preliminary filling resistance
Temp is divided to following two kinds of situations：
If being closed, duration t is more than preset time threshold para4 or the temperature temp of preliminary filling resistance is more than preset temperature
Threshold value para5 is spent, step Y11 is executed；
It is less than or equal to time threshold para4 if being closed and taking t, and the temperature of preliminary filling resistance is less than or equal to the temperature threshold
Value para5 executes step Y05；
Step Y08, it is closed the positive contactor KM1 of master of battery cluster described in step Y01, disconnects preliminary filling contactor KM3；
Step Y09, be delayed T5；
Step Y10, battery cluster element described in step Y01 is eliminated in BmsArray arrays；Judging BmsArray arrays is
It is no if it is empty to execute step Y11 to be empty, if non-empty executes step Y01；
Step Y11, preliminary filling control sub-process terminates.
Wherein, battery measurement voltage V2 is the voltage between the positive electrode and negative electrode of energy-storage battery in battery cluster；Busbar measures
Voltage V3 is the voltage between the cathode and the anode of the battery cluster mesohigh case of the energy-storage battery, and difference can pass through two
Voltage measuring apparatus measures.
Electric current I between the cathode of DC bus and the cathode of the battery cluster can be measured with current measure device.
Optionally, described control unit is specifically used for：
D：If the pressure difference is less than or equal to the first threshold, the master being closed in the battery cluster of ceiling voltage bears contact
Device；
E：If after preset third duration, the battery measurement voltage of the battery cluster measures the difference of voltage with busbar
Value is more than the first threshold, then executes the A-C；
F：If after preset third duration, the battery measurement voltage of the battery cluster measures the difference of voltage with busbar
Value is less than or equal to the first threshold, the then positive contactor of master being closed in the battery cluster；The battery cluster group is updated, weight
The D-F is executed again, until the battery cluster group is sky.
Specifically, the above process is the operating process for exempting from preliminary filling control sub-process.As shown in Figure 3：
Step M01, the maximum battery clusters of voltage V1 of energy-storage battery in BmsArray arrays are searched；
Step M02, the master for being closed battery cluster described in step M01 bears contactor KM2；
Step M03, delay T1 (third duration)；
Step M04, the difference of the battery measurement voltage V2 of battery cluster described in step M01 and busbar measurement voltage V3 are calculated
Absolute value abs (V2-V3)；The relationship for judging first threshold para1 described in abs (V2-V3) and step Z07, is divided to following two kinds
Situation：
If 1) abs (V2-V3) is more than para1, preliminary filling control sub-process (executing the A-C) is executed；
If 2) abs (V2-V3) is less than or equal to para1, step M05 is executed；
Step M05, it is closed the positive contactor KM1 of master of battery cluster described in step M01；
Step M06, be delayed T2；
Step M07, battery cluster element described in step M01 is eliminated in BmsArray arrays；Judge BmsArray whether be
If it is empty sky executes step M08, if non-empty executes step M01；
Step M08 exempts from preliminary filling control sub-process and terminates.
The energy-storage system of the present embodiment, including：At least one battery cluster, DC bus, control unit；Each battery
Cluster includes：Energy-storage battery and high-voltaghe compartment；The high-voltaghe compartment includes：Battery management system BMS, main positive contactor, main negative contactor,
Preliminary filling contactor and preliminary filling resistance；The preliminary filling contactor and the preliminary filling resistance connect to form the first branch, described first
Road formation the second branch in parallel with the positive contactor of the master, one end of the second branch and the anode of the energy-storage battery connect
It connects, the other end of the second branch is connect with the anode of the DC bus；The master bears one end of contactor and the storage
The cathode connection of energy battery, the other end that the master bears contactor are connect with the cathode of the DC bus；Described control unit
It is connect with the BMS；Described control unit is specifically used for：If the electricity of ceiling voltage in the battery cluster group enabled in the battery cluster
The pressure difference of the battery cluster of pond cluster and minimum voltage is more than preset first threshold, then controls the pressure difference, each to realize
The parallel running of a battery cluster when the pressure difference in the above process between battery cluster is larger, controls pressure difference to come actively
Voltage difference between balancing battery cluster makes each battery cluster of energy-storage system realize parallel running as early as possible, can effectively reduce voltage difference and draw
It is influenced caused by the circulation risen.
On the basis of the above embodiments, optionally, described control unit is specifically used for：
If the pressure difference is more than preset second threshold, the first threshold will be less than with the pressure difference of the ceiling voltage
The corresponding battery cluster of voltage, the battery cluster as electric discharge group；
By battery cluster corresponding less than the voltage of the first threshold with the pressure difference of the minimum voltage, as charging group
Battery cluster；
According to the operating status of the energy-storage system, using the one of which in the charging group and the electric discharge group as dimension
Shield group carries out charge or discharge maintenance to the maintenance group, until the voltage value of battery cluster of the ceiling voltage and described
The pressure difference of the voltage value of the battery cluster of minimum voltage is less than preset third threshold value, and stopping is charged or put to the maintenance group
Electricity is safeguarded.
Optionally, described control unit is specifically used for：
When the operating status is that discharge condition puts the maintenance group then using the electric discharge group as maintenance group
Electricity is safeguarded；
When the operating status is that charged state fills the maintenance group then using the charging group as maintenance group
Electricity is safeguarded；
It is when the operating status is light condition, then that battery number of clusters amount in the charging group and the electric discharge group is most
One of which carries out charge or discharge maintenance as maintenance group, to the maintenance group.
Specifically, the above process is the operating process for safeguarding control sub-process, as shown in Figure 5：
Step W01, electric discharge group NeedDisChargeArray is defined, by the voltage of the energy-storage battery in BmsArray arrays
Maximum V1 values Vmax as the reference voltage, and electric discharge group is added in the corresponding battery cluster of maximum V1 values, by BmsArray numbers
The voltage value of energy-storage battery battery cluster corresponding less than the first threshold para1 with Vmax values difference, which is added, in group discharges
Group；
Step W02, charging group NeedChargeArray is defined, most by the voltage of the energy-storage battery in BmsArray arrays
Small V1 values Vmin as the reference voltage, and by the minimum corresponding battery cluster addition charging group of V1 values, by BmsArray arrays
The voltage value of middle energy-storage battery differs the battery cluster less than the first threshold para1 with the Vmin values and charging group is added；
Step W03, maintenance group MaintainArray is defined, judges energy-storage system operating status, point following three kinds of situations：
1) energy-storage system is in discharge condition, using electric discharge group described in step W01 as maintenance group；
2) energy-storage system is in charged state, using charging group described in step W02 as maintenance group；
3) energy-storage system is in light condition, by both charging groups described in electric discharge group described in step W01 and step W02
Middle battery number of clusters productive person is as maintenance group；
Step W04, according to energy-storage system operating status, charge or discharge maintenance is carried out to the maintenance group；Specially press
According to main negative contactor KM2, delay T6 is closed, be closed main positive contactor KM1, be delayed T7 the step of institute in operating procedure W03 successively
State the battery cluster in maintenance group；
Step W05, current V1 values that Vmax is corresponded to battery cluster are defined as Vh, and Vmin is corresponded to the current V1 values of battery cluster
It is defined as Vs；Charge or discharge are safeguarded, judge the size of Vh and Vs, if the absolute value of the difference of the two is less than preset third
Threshold value executes step W06, if the absolute value of the difference of the two is greater than or equal to third threshold value, executes step W04；
Step W06, according to main positive contactor KM1, delay T8 is disconnected, disconnect main negative contactor KM2, be delayed T9 the step of according to
Battery cluster in maintenance group described in secondary operating procedure W03；
Step W07, it safeguards that control sub-process terminates, continues to execute control strategy main flow step Z05.
In the embodiment of the present invention, the different voltage difference sizes between battery cluster carry out grade classification and (are divided into different
Stage), the battery cluster smaller to voltage difference, by exempt from preliminary filling control be directly realized by each battery cluster parallel running, to voltage difference compared with
Big battery cluster keeps energy-storage system each by the methods of preliminary filling control, maintenance control come the voltage difference between active equalization battery cluster
Battery cluster realizes parallel running as early as possible.The control strategy of the embodiment of the present invention is to differences such as the chargings, electric discharge, zero load of energy-storage system
Operational mode is applicable in.
The flow diagram of one embodiment of control method of voltage difference between Fig. 6 battery clusters provided in an embodiment of the present invention.Such as
Shown in Fig. 6, the control method of voltage difference between the battery cluster of the present embodiment is applied to energy-storage system, including：At least one battery
Cluster, DC bus, control unit；Each the battery cluster includes：Energy-storage battery and high-voltaghe compartment；The high-voltaghe compartment includes：Battery
Management system BMS, main positive contactor, main negative contactor, preliminary filling contactor and preliminary filling resistance；The preliminary filling contactor and described pre-
Charging resistance, which is connected, forms the first branch, first branch formation the second branch in parallel with the positive contactor of the master, and described second
One end of branch is connect with the anode of the energy-storage battery, and the other end of the second branch and the anode of the DC bus connect
It connects；One end that the master bears contactor is connect with the cathode of the energy-storage battery, the other end of the negative contactor of the master with it is described
The cathode of DC bus connects；Described control unit is connect with the BMS；The method, including：
Step 601 determines the battery cluster group enabled in the battery cluster；The battery cluster group includes at least one enabled
Battery cluster；
If the battery cluster of ceiling voltage and the electricity of minimum voltage in the battery cluster group enabled in step 602, the battery cluster
The pressure difference of pond cluster is more than preset first threshold, then controls the pressure difference, to realize the parallel connection of each battery cluster
Operation.
Optionally, described that the pressure difference is controlled, it specifically includes：
A：If the pressure difference is more than the first threshold, and, it is less than or equal to preset second threshold, then is closed highest electricity
Master in the battery cluster of pressure bears contactor；
B：If after preset first duration, the battery measurement voltage of the battery cluster measures the pressure difference of voltage with busbar
It is less than or equal to the second threshold and institute less than or equal to the second threshold and more than the first threshold or the pressure difference
The electric current stated between the cathode of DC bus and the cathode of the battery cluster is more than current threshold, then is closed in the battery cluster
Preliminary filling contactor；The battery measurement voltage is the voltage between the positive electrode and negative electrode of energy-storage battery in the battery cluster；It is described
Busbar measures the voltage between the cathode and the anode of the battery cluster mesohigh case that voltage is the energy-storage battery；
C：If after preset first duration, the battery measurement voltage of the battery cluster measures the pressure difference of voltage with busbar
Less than or equal to the first threshold, and the electric current between the cathode of the DC bus and the cathode of the battery cluster be less than or
Equal to the current threshold, then the positive contactor of master being closed in the battery cluster, and disconnect preliminary filling contactor；
The battery cluster group is updated, the A-C is repeated, until the battery cluster group is sky.
Optionally, after being closed the preliminary filling contactor in the battery cluster, further include：
After preset second duration, if the closure duration of the preliminary filling contactor is less than or equal to preset time threshold
Value, and the temperature of the preliminary filling resistance in the battery cluster is less than or equal to preset temperature threshold, then repeats B or C.
Optionally, described that the pressure difference is controlled, also specifically include：
If the pressure difference is more than preset second threshold, the first threshold will be less than with the pressure difference of the ceiling voltage
The corresponding battery cluster of voltage, the battery cluster as electric discharge group；
By battery cluster corresponding less than the voltage of the first threshold with the pressure difference of the minimum voltage, as charging group
Battery cluster；
According to the operating status of the energy-storage system, using the one of which in the charging group and the electric discharge group as dimension
Shield group carries out charge or discharge maintenance to the maintenance group, until the voltage value of battery cluster of the ceiling voltage and described
The pressure difference of the voltage value of the battery cluster of minimum voltage is less than preset third threshold value, and stopping is charged or put to the maintenance group
Electricity is safeguarded.
Optionally, according to the operating status of the energy-storage system, by wherein one in the charging group and the electric discharge group
Group is used as maintenance group, including：
When the operating status is that discharge condition puts the maintenance group then using the electric discharge group as maintenance group
Electricity is safeguarded；
When the operating status is that charged state fills the maintenance group then using the charging group as maintenance group
Electricity is safeguarded；
It is when the operating status is light condition, then that battery number of clusters amount in the charging group and the electric discharge group is most
One of which carries out charge or discharge maintenance as maintenance group, to the maintenance group.
Optionally, the method for the present embodiment further includes：
D：If the pressure difference is less than or equal to the first threshold, the master being closed in the battery cluster of ceiling voltage bears contact
Device；
E：If after preset third duration, the battery measurement voltage of the battery cluster measures the difference of voltage with busbar
Value is more than the first threshold, then executes the A-C；
F：If after preset third duration, the battery measurement voltage of the battery cluster measures the difference of voltage with busbar
Value is less than or equal to the first threshold, the then positive contactor of master being closed in the battery cluster；The battery cluster group is updated, weight
The D-F is executed again, until the battery cluster group is sky.
The method of the present embodiment, implementing principle and technical effect are similar with system embodiment above-mentioned, no longer superfluous herein
It states.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.The present invention is directed to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and includes the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following
Claims are pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by appended claims
System.
Claims (10)
1. a kind of energy-storage system, which is characterized in that including：
At least one battery cluster, DC bus and control unit；
Each the battery cluster includes：Energy-storage battery and high-voltaghe compartment；The high-voltaghe compartment includes：Battery management system BMS, master just connect
Tentaculum, main negative contactor, preliminary filling contactor and preliminary filling resistance；The preliminary filling contactor and the preliminary filling resistance connect to form first
Branch, first branch formation the second branch in parallel with the positive contactor of the master, one end of the second branch and the storage
The anode connection of energy battery, the other end of the second branch are connect with the anode of the DC bus；The master bears contactor
One end connect with the cathode of the energy-storage battery, the cathode that the master bears the other end and the DC bus of contactor connects
It connects；
Described control unit is connect with the BMS, and described control unit is used for：If in the battery cluster group enabled in the battery cluster
The pressure difference of the battery cluster of ceiling voltage and the battery cluster of minimum voltage is more than preset first threshold, then is controlled to the pressure difference
System, to realize the parallel running of each battery cluster.
2. system according to claim 1, which is characterized in that described control unit is specifically used for：
A：If the pressure difference is more than the first threshold, and, it is less than or equal to preset second threshold, then is closed ceiling voltage
Master in battery cluster bears contactor；
B：If after preset first duration, the pressure difference of the battery measurement voltage and busbar measurement voltage of the battery cluster is less than
Or it is less than or equal to the second threshold and described straight equal to the second threshold and more than the first threshold or the pressure difference
The electric current flowed between the cathode and the cathode of the battery cluster of busbar is more than current threshold, the then preliminary filling being closed in the battery cluster
Contactor；The battery measurement voltage is the voltage between the positive electrode and negative electrode of energy-storage battery in the battery cluster；The busbar
Measure the voltage between the cathode and the anode of the battery cluster mesohigh case that voltage is the energy-storage battery；
C：If after preset first duration, the pressure difference of the battery measurement voltage and busbar measurement voltage of the battery cluster is less than
Or it is equal to the first threshold, and the electric current between the cathode of the DC bus and the cathode of the battery cluster is less than or equal to
The current threshold, then the positive contactor of master being closed in the battery cluster, and disconnect preliminary filling contactor；
The battery cluster group is updated, the A-C is repeated, until the battery cluster group is sky.
3. system according to claim 2, which is characterized in that described control unit, also particularly useful for：
After being closed the preliminary filling contactor in the battery cluster, and after preset second duration, if the preliminary filling contactor
It is closed duration and is less than or equal to preset time threshold, and the temperature of the preliminary filling resistance in the battery cluster is less than or equal to default
Temperature threshold, then repeat B or C.
4. according to claim 1-3 any one of them systems, which is characterized in that described control unit is specifically used for：
If the pressure difference is more than preset second threshold, the electricity of the first threshold will be less than with the pressure difference of the ceiling voltage
Corresponding battery cluster is pressed, the battery cluster as electric discharge group；
By battery cluster corresponding less than the voltage of the first threshold with the pressure difference of the minimum voltage, the battery as charging group
Cluster；
According to the operating status of the energy-storage system, using the one of which in the charging group and the electric discharge group as maintenance
Group, to the maintenance group carry out charge or discharge maintenance, until the ceiling voltage battery cluster voltage value and it is described most
The pressure difference of the voltage value of the battery cluster of low-voltage is less than preset third threshold value, stops carrying out charge or discharge to the maintenance group
It safeguards.
5. system according to claim 4, which is characterized in that described control unit is specifically used for：
When the operating status is that discharge condition carries out electric discharge dimension then using the electric discharge group as maintenance group to the maintenance group
Shield；
When the operating status is that charged state carries out charging dimension then using the charging group as maintenance group to the maintenance group
Shield；
When the operating status be light condition, then by battery number of clusters amount in the charging group and the electric discharge group at most wherein
One group is used as maintenance group, and charge or discharge maintenance is carried out to the maintenance group.
6. system according to claim 2 or 3, which is characterized in that described control unit is specifically used for：
D：If the pressure difference is less than or equal to the first threshold, the master being closed in the battery cluster of ceiling voltage bears contactor；
E：If after preset third duration, the battery measurement voltage of the battery cluster measures the difference of voltage with busbar, greatly
In the first threshold, then the A-C is executed；
F：If after preset third duration, the battery measurement voltage of the battery cluster measures the difference of voltage with busbar, small
In or be equal to the first threshold, then the positive contactor of master being closed in the battery cluster；The battery cluster group is updated, is repeated
The D-F, until the battery cluster group is sky.
7. the control method of voltage difference between a kind of battery cluster, which is characterized in that it is applied to energy-storage system, including：At least one electricity
Pond cluster, DC bus and control unit；Each the battery cluster includes：Energy-storage battery and high-voltaghe compartment；The high-voltaghe compartment includes：Electricity
Pond manages system BMS, main positive contactor, main negative contactor, preliminary filling contactor and preliminary filling resistance；The preliminary filling contactor and described
Preliminary filling resistance connects to form the first branch, first branch formation the second branch in parallel with the positive contactor of the master, and described
One end of two branches is connect with the anode of the energy-storage battery, the anode of the other end of the second branch and the DC bus
Connection；One end that the master bears contactor is connect with the cathode of the energy-storage battery, and the master bears the other end and the institute of contactor
State the cathode connection of DC bus；Described control unit is connect with the BMS；The method, including：
Determine the battery cluster group enabled in the battery cluster；The battery cluster group includes at least one enabled battery cluster；
If the pressure difference of the battery cluster of the battery cluster and minimum voltage of ceiling voltage is big in the battery cluster group enabled in the battery cluster
In preset first threshold, then the pressure difference is controlled, to realize the parallel running of each battery cluster.
8. the method according to the description of claim 7 is characterized in that described control the pressure difference, specifically include：
A：If the pressure difference is more than the first threshold, and, it is less than or equal to preset second threshold, then is closed ceiling voltage
Master in battery cluster bears contactor；
B：If after preset first duration, the pressure difference of the battery measurement voltage and busbar measurement voltage of the battery cluster is less than
Or it is less than or equal to the second threshold and described straight equal to the second threshold and more than the first threshold or the pressure difference
The electric current flowed between the cathode and the cathode of the battery cluster of busbar is more than current threshold, the then preliminary filling being closed in the battery cluster
Contactor；The battery measurement voltage is the voltage between the positive electrode and negative electrode of energy-storage battery in the battery cluster；The busbar
Measure the voltage between the cathode and the anode of the battery cluster mesohigh case that voltage is the energy-storage battery；
C：If after preset first duration, the pressure difference of the battery measurement voltage and busbar measurement voltage of the battery cluster is less than
Or it is equal to the first threshold, and the electric current between the cathode of the DC bus and the cathode of the battery cluster is less than or equal to
The current threshold, then the positive contactor of master being closed in the battery cluster, and disconnect preliminary filling contactor；
The battery cluster group is updated, the A-C is repeated, until the battery cluster group is sky.
9. according to the method described in claim 8, it is characterized in that, further including：
After being closed the preliminary filling contactor in the battery cluster, and after preset second duration, if the preliminary filling contactor
It is closed duration and is less than or equal to preset time threshold, and the temperature of the preliminary filling resistance in the battery cluster is less than or equal to default
Temperature threshold, then repeat B or C.
10. according to claim 7-9 any one of them methods, which is characterized in that it is described that the pressure difference is controlled, also have
Body includes：
If the pressure difference is more than preset second threshold, the electricity of the first threshold will be less than with the pressure difference of the ceiling voltage
Corresponding battery cluster is pressed, the battery cluster as electric discharge group；
By battery cluster corresponding less than the voltage of the first threshold with the pressure difference of the minimum voltage, the battery as charging group
Cluster；
According to the operating status of the energy-storage system, using the one of which in the charging group and the electric discharge group as maintenance
Group, to the maintenance group carry out charge or discharge maintenance, until the ceiling voltage battery cluster voltage value and it is described most
The pressure difference of the voltage value of the battery cluster of low-voltage is less than preset third threshold value, stops carrying out charge or discharge to the maintenance group
It safeguards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810114197.XA CN108336783B (en) | 2018-02-05 | 2018-02-05 | Energy storage system and control method for voltage difference between battery clusters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810114197.XA CN108336783B (en) | 2018-02-05 | 2018-02-05 | Energy storage system and control method for voltage difference between battery clusters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108336783A true CN108336783A (en) | 2018-07-27 |
| CN108336783B CN108336783B (en) | 2020-10-09 |
Family
ID=62926982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810114197.XA Active CN108336783B (en) | 2018-02-05 | 2018-02-05 | Energy storage system and control method for voltage difference between battery clusters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108336783B (en) |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274086A (en) * | 2018-10-03 | 2019-01-25 | 深圳库博能源科技有限公司 | A kind of automatic simultaneously off-network control method of energy-storage battery cluster based on DC bus differential pressure security |
| CN109617247A (en) * | 2018-12-27 | 2019-04-12 | 广东电网有限责任公司 | A kind of energy storage system control method and equipment |
| CN109742471A (en) * | 2018-11-28 | 2019-05-10 | 北京海博思创科技有限公司 | The processing system of retired battery |
| CN110303943A (en) * | 2019-08-01 | 2019-10-08 | 中车资阳机车有限公司 | The double branch power battery high-voltage parallel systems of pure electric vehicle rail locomotive and control method |
| CN110571886A (en) * | 2019-09-12 | 2019-12-13 | 上海电气国轩新能源科技有限公司 | control method and system for voltage balance of battery system |
| CN111009949A (en) * | 2019-12-27 | 2020-04-14 | 深圳市欧力普能源与自动化技术有限公司 | Current-sharing control method for parallel lithium battery packs |
| CN111276989A (en) * | 2020-02-26 | 2020-06-12 | 深圳市科陆电子科技股份有限公司 | Energy storage control protection method and system |
| CN111431231A (en) * | 2020-03-31 | 2020-07-17 | 清华大学 | Battery grouping framework based on flexible connection and redundancy |
| CN111786450A (en) * | 2019-04-04 | 2020-10-16 | 宁德时代新能源科技股份有限公司 | Control method of energy storage system |
| CN112140892A (en) * | 2020-10-14 | 2020-12-29 | 中车株洲电力机车有限公司 | Rail transit vehicle and multi-energy-storage-power-supply grid-connected control method and system thereof |
| CN112751399A (en) * | 2019-10-31 | 2021-05-04 | 中车株洲电力机车研究所有限公司 | Energy storage system |
| CN113193633A (en) * | 2021-06-04 | 2021-07-30 | 傲普(上海)新能源有限公司 | Battery cluster access method and device, energy storage power station, equipment and storage medium |
| CN113285507A (en) * | 2021-05-24 | 2021-08-20 | 阳光电源股份有限公司 | Battery cluster parallel connection method and related device |
| CN113517747A (en) * | 2021-08-30 | 2021-10-19 | 阳光储能技术有限公司 | Battery cluster balanced energy storage system and control method thereof |
| CN113690982A (en) * | 2021-08-26 | 2021-11-23 | 成都振中电气集团有限公司 | Inter-cluster voltage balancing device based on half-bridge Buck principle |
| CN113740782A (en) * | 2021-09-16 | 2021-12-03 | 远景能源有限公司 | Wiring detection method |
| CN113745673A (en) * | 2021-08-18 | 2021-12-03 | 东莞新能安科技有限公司 | Battery cluster electrifying method and system, battery management system and battery cluster |
| WO2022002121A1 (en) * | 2020-06-30 | 2022-01-06 | 比亚迪股份有限公司 | Charging and discharging system |
| CN114336888A (en) * | 2022-01-11 | 2022-04-12 | 阳光电源股份有限公司 | Energy storage unit parallel operation control method, battery management system and battery energy storage system |
| CN114513036A (en) * | 2022-04-19 | 2022-05-17 | 深圳市德兰明海科技有限公司 | Portable energy storage power supply parallel packaging system and method |
| WO2022188053A1 (en) * | 2021-03-10 | 2022-09-15 | 华为数字能源技术有限公司 | Distributed power supply system and control method |
| CN115276246A (en) * | 2022-09-19 | 2022-11-01 | 清华大学 | Chain type energy storage system and starting control method |
| CN116073493A (en) * | 2023-04-06 | 2023-05-05 | 西安图为电气技术有限公司 | Power control method, power energy storage system, device, equipment and storage medium |
| CN116436133A (en) * | 2023-06-14 | 2023-07-14 | 苏州精控能源科技有限公司 | Circulation control method, equipment and storage medium applied to large-scale energy storage system |
| CN116995785A (en) * | 2023-09-26 | 2023-11-03 | 杭州华塑科技股份有限公司 | Battery pack parallel connection method, device and system |
| WO2023216431A1 (en) * | 2022-05-09 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Energy storage apparatus |
| CN117175748A (en) * | 2023-10-30 | 2023-12-05 | 宁德时代新能源科技股份有限公司 | Battery state parameter balancing method, energy storage unit, BMS and storage medium |
| CN111431231B (en) * | 2020-03-31 | 2024-04-26 | 清华大学 | Battery grouping architecture based on flexible connection and redundancy |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001265A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | High-voltage output electrical box for power battery |
| CN103311979A (en) * | 2012-03-15 | 2013-09-18 | 株式会社日立制作所 | Battery system |
| CN103414224A (en) * | 2013-08-14 | 2013-11-27 | 惠州市亿能电子有限公司 | High-capacity high-voltage integrated battery pack system and control method thereof |
| US20140306666A1 (en) * | 2013-04-11 | 2014-10-16 | Sk Innovation Co., Ltd. | Apparatus and Method for Battery Balancing |
| CN104600784A (en) * | 2014-12-25 | 2015-05-06 | 北京新能源汽车股份有限公司 | Method and device for controlling power-on flow of multi-branch battery energy storage system |
| CN106329643A (en) * | 2016-09-13 | 2017-01-11 | 北京经纬恒润科技有限公司 | Charging control method and charging control system |
| CN106696707A (en) * | 2015-11-17 | 2017-05-24 | 北汽福田汽车股份有限公司 | Power on and off control method and system for power battery pack of electric automobile |
| CN107104453A (en) * | 2017-05-11 | 2017-08-29 | 沃太能源南通有限公司 | A kind of many clusters of the container for having multi-stage protection concurrently energy-storage system in parallel |
-
2018
- 2018-02-05 CN CN201810114197.XA patent/CN108336783B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001265A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | High-voltage output electrical box for power battery |
| CN103311979A (en) * | 2012-03-15 | 2013-09-18 | 株式会社日立制作所 | Battery system |
| US20140306666A1 (en) * | 2013-04-11 | 2014-10-16 | Sk Innovation Co., Ltd. | Apparatus and Method for Battery Balancing |
| CN103414224A (en) * | 2013-08-14 | 2013-11-27 | 惠州市亿能电子有限公司 | High-capacity high-voltage integrated battery pack system and control method thereof |
| CN104600784A (en) * | 2014-12-25 | 2015-05-06 | 北京新能源汽车股份有限公司 | Method and device for controlling power-on flow of multi-branch battery energy storage system |
| CN106696707A (en) * | 2015-11-17 | 2017-05-24 | 北汽福田汽车股份有限公司 | Power on and off control method and system for power battery pack of electric automobile |
| CN106329643A (en) * | 2016-09-13 | 2017-01-11 | 北京经纬恒润科技有限公司 | Charging control method and charging control system |
| CN107104453A (en) * | 2017-05-11 | 2017-08-29 | 沃太能源南通有限公司 | A kind of many clusters of the container for having multi-stage protection concurrently energy-storage system in parallel |
Cited By (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274086A (en) * | 2018-10-03 | 2019-01-25 | 深圳库博能源科技有限公司 | A kind of automatic simultaneously off-network control method of energy-storage battery cluster based on DC bus differential pressure security |
| CN109274086B (en) * | 2018-10-03 | 2021-07-27 | 深圳库博能源科技有限公司 | Automatic grid-connection and grid-disconnection control method for energy storage battery cluster based on direct-current bus differential pressure protection |
| CN109742471A (en) * | 2018-11-28 | 2019-05-10 | 北京海博思创科技有限公司 | The processing system of retired battery |
| CN109617247A (en) * | 2018-12-27 | 2019-04-12 | 广东电网有限责任公司 | A kind of energy storage system control method and equipment |
| CN109617247B (en) * | 2018-12-27 | 2021-06-29 | 广东电网有限责任公司 | Energy storage system control method and equipment |
| CN111786450A (en) * | 2019-04-04 | 2020-10-16 | 宁德时代新能源科技股份有限公司 | Control method of energy storage system |
| CN110303943A (en) * | 2019-08-01 | 2019-10-08 | 中车资阳机车有限公司 | The double branch power battery high-voltage parallel systems of pure electric vehicle rail locomotive and control method |
| CN110303943B (en) * | 2019-08-01 | 2024-01-30 | 中车资阳机车有限公司 | Control method for high-voltage parallel system of double-branch power battery of pure electric rail locomotive |
| CN110571886A (en) * | 2019-09-12 | 2019-12-13 | 上海电气国轩新能源科技有限公司 | control method and system for voltage balance of battery system |
| CN112751399A (en) * | 2019-10-31 | 2021-05-04 | 中车株洲电力机车研究所有限公司 | Energy storage system |
| CN111009949B (en) * | 2019-12-27 | 2023-09-26 | 深圳市欧力普能源与自动化技术有限公司 | Parallel lithium battery pack current sharing control method |
| CN111009949A (en) * | 2019-12-27 | 2020-04-14 | 深圳市欧力普能源与自动化技术有限公司 | Current-sharing control method for parallel lithium battery packs |
| CN111276989A (en) * | 2020-02-26 | 2020-06-12 | 深圳市科陆电子科技股份有限公司 | Energy storage control protection method and system |
| CN111276989B (en) * | 2020-02-26 | 2023-08-08 | 深圳市科陆电子科技股份有限公司 | Energy storage control protection method and system |
| CN111431231A (en) * | 2020-03-31 | 2020-07-17 | 清华大学 | Battery grouping framework based on flexible connection and redundancy |
| CN111431231B (en) * | 2020-03-31 | 2024-04-26 | 清华大学 | Battery grouping architecture based on flexible connection and redundancy |
| WO2022002121A1 (en) * | 2020-06-30 | 2022-01-06 | 比亚迪股份有限公司 | Charging and discharging system |
| CN112140892A (en) * | 2020-10-14 | 2020-12-29 | 中车株洲电力机车有限公司 | Rail transit vehicle and multi-energy-storage-power-supply grid-connected control method and system thereof |
| WO2022188053A1 (en) * | 2021-03-10 | 2022-09-15 | 华为数字能源技术有限公司 | Distributed power supply system and control method |
| CN113285507A (en) * | 2021-05-24 | 2021-08-20 | 阳光电源股份有限公司 | Battery cluster parallel connection method and related device |
| CN113285507B (en) * | 2021-05-24 | 2024-04-12 | 阳光电源股份有限公司 | Battery cluster parallel connection method and related device |
| CN113193633B (en) * | 2021-06-04 | 2023-09-08 | 傲普(上海)新能源有限公司 | Battery cluster access method, device, energy storage power station, equipment and storage medium |
| CN113193633A (en) * | 2021-06-04 | 2021-07-30 | 傲普(上海)新能源有限公司 | Battery cluster access method and device, energy storage power station, equipment and storage medium |
| CN113745673A (en) * | 2021-08-18 | 2021-12-03 | 东莞新能安科技有限公司 | Battery cluster electrifying method and system, battery management system and battery cluster |
| CN113690982A (en) * | 2021-08-26 | 2021-11-23 | 成都振中电气集团有限公司 | Inter-cluster voltage balancing device based on half-bridge Buck principle |
| CN113517747B (en) * | 2021-08-30 | 2024-02-23 | 阳光储能技术有限公司 | Battery cluster balanced energy storage system and control method thereof |
| CN113517747A (en) * | 2021-08-30 | 2021-10-19 | 阳光储能技术有限公司 | Battery cluster balanced energy storage system and control method thereof |
| CN113740782A (en) * | 2021-09-16 | 2021-12-03 | 远景能源有限公司 | Wiring detection method |
| CN114336888B (en) * | 2022-01-11 | 2024-04-12 | 阳光电源股份有限公司 | Energy storage unit parallel operation control method, battery management system and battery energy storage system |
| CN114336888A (en) * | 2022-01-11 | 2022-04-12 | 阳光电源股份有限公司 | Energy storage unit parallel operation control method, battery management system and battery energy storage system |
| CN114513036B (en) * | 2022-04-19 | 2022-07-19 | 深圳市德兰明海科技有限公司 | Portable energy storage power supply parallel packaging system and method |
| CN114513036A (en) * | 2022-04-19 | 2022-05-17 | 深圳市德兰明海科技有限公司 | Portable energy storage power supply parallel packaging system and method |
| WO2023216431A1 (en) * | 2022-05-09 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Energy storage apparatus |
| CN115276246A (en) * | 2022-09-19 | 2022-11-01 | 清华大学 | Chain type energy storage system and starting control method |
| CN116073493A (en) * | 2023-04-06 | 2023-05-05 | 西安图为电气技术有限公司 | Power control method, power energy storage system, device, equipment and storage medium |
| CN116436133B (en) * | 2023-06-14 | 2023-08-29 | 苏州精控能源科技有限公司 | Circulation control method, equipment and storage medium applied to large-scale energy storage system |
| CN116436133A (en) * | 2023-06-14 | 2023-07-14 | 苏州精控能源科技有限公司 | Circulation control method, equipment and storage medium applied to large-scale energy storage system |
| CN116995785B (en) * | 2023-09-26 | 2023-12-22 | 杭州华塑科技股份有限公司 | Battery pack parallel connection method, device and system |
| CN116995785A (en) * | 2023-09-26 | 2023-11-03 | 杭州华塑科技股份有限公司 | Battery pack parallel connection method, device and system |
| CN117175748A (en) * | 2023-10-30 | 2023-12-05 | 宁德时代新能源科技股份有限公司 | Battery state parameter balancing method, energy storage unit, BMS and storage medium |
| CN117175748B (en) * | 2023-10-30 | 2024-04-02 | 宁德时代新能源科技股份有限公司 | Battery state parameter balancing method, energy storage unit, BMS and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108336783B (en) | 2020-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108336783A (en) | The control method of voltage difference between energy-storage system and battery cluster | |
| CN105449295B (en) | Electrokinetic cell balance control method, device and circuit | |
| KR101227747B1 (en) | Method for cell balancing for lithium battery systems | |
| CN110380144B (en) | Mixed coordination control method and system for retired lithium iron phosphate and ternary lithium battery | |
| EP2685591B1 (en) | Battery management unit for vehicle | |
| US8760118B2 (en) | System and method for charging and discharging a Li-ion battery | |
| CN101826745A (en) | Lithium ion power battery lossless charger | |
| CN216389527U (en) | Battery heating system, battery pack and electric device | |
| CN105119022A (en) | Lithium ion battery equalization control enablement method and quitting method for hybrid vehicle | |
| CN108321906A (en) | A kind of power battery pack static equilibrium control method | |
| CN110323801A (en) | A kind of energy-storage system battery module equalizing structure and control method | |
| CN110492555A (en) | A kind of equal balance system and its control method of high capacity cell | |
| CN109655753A (en) | A kind of evaluation method of battery pack SOC | |
| CN108879816A (en) | A kind of charge control method based on lithium battery characteristic | |
| CN109884529A (en) | A kind of power battery for hybrid electric vehicle remaining capacity calculation method | |
| CN110266081A (en) | A kind of energy-accumulating power station and its compatibilizing method | |
| CN109193863A (en) | Battery voltage balance control method and circuit | |
| CN112202160B (en) | Direct-hanging bus type energy storage control system and control method | |
| CN101964431B (en) | Multi-stage constant-voltage charging method of lithium secondary battery | |
| CN112467825A (en) | Lithium battery pack equalization method based on big data | |
| Bentley et al. | On beneficial Vehicle-to-Grid (V2G) services | |
| CN105529782B (en) | Online storage battery pack lagging battery emergency auxiliary system and working method thereof | |
| CN110112812B (en) | Battery module active equalization method and system, control device and storage medium | |
| CN102709614B (en) | Method for charging and discharging lithium secondary battery | |
| CN114268147A (en) | Energy storage battery management method and system and energy storage battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Unit 1201, unit 3, 12 / F, building 2, yard 9, FengHao East Road, Haidian District, Beijing 100094 Applicant after: Beijing Haibo Sichuang Technology Co., Ltd Address before: 100083 room No. two, block C, building, science and technology research center, Beijing Forestry University, Qinghua East Road, Beijing, Haidian District Applicant before: BEIJING HYPERSTRONG TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |