CN108713274A - The control method of battery module, battery system and battery system - Google Patents
The control method of battery module, battery system and battery system Download PDFInfo
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- CN108713274A CN108713274A CN201780014826.5A CN201780014826A CN108713274A CN 108713274 A CN108713274 A CN 108713274A CN 201780014826 A CN201780014826 A CN 201780014826A CN 108713274 A CN108713274 A CN 108713274A
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Protection Of Static Devices (AREA)
Abstract
Provide safeguard battery safety battery module, battery system, and its control method, the battery module (10) of embodiment has battery (BT), to battery (BT) and primary circuit route (101, 102) switch (SW) that electrical connection switches over, voltage to battery (BT) and flow through the determination part (12) that the electric current of battery (BT) is measured, it can be with the communication unit (16) of PERCOM peripheral communication, based on the voltage value and current value determined by determination part (16), and judge whether via the value that communication unit (16) is received externally can be by battery (BT) and primary circuit route (101, 102) it is electrically connected and controls the control unit (14) of switch (SW).
Description
Technical field
Embodiments of the present invention are related to the control method of battery module, battery system and battery system.
Background technology
Battery system for example has 1 or multiple battery modules (module).Battery module has comprising multiple single electricity
The battery (battery) in pond (cell) measures the sensing of the voltage of battery, the electric current for flowing through battery, temperature near battery etc.
Device controls the control unit of the action of charge and discharge of battery etc., and the communication unit communicated with outside.
In battery system as described above, for example, each battery module can be removed, or it can when deteriorating in failure
It replaces.
Existing technical literature
Patent document
Patent document 1:Japanese Unexamined Patent Publication 11-234915 bulletins
Invention content
In the battery system made of connecting multiple battery modules in parallel, if in the battery of multiple battery modules
It is had differences in voltage, is then possible to flow through excessive electricity in battery module when battery module to be connect with primary circuit route
The reason of flowing, and becoming battery system stopping or failure.
If in order to ensure the safety of battery system, and into the cell voltage for exercising multiple battery modules in external device (ED)
Consistent processing, the then calculating in external device (ED) become complicated, need expensive calculating mechanism or component.Therefore, what one hopes or wishes for is simple
The battery system that can also carry of external device (ED).
Embodiments of the present invention are made in view of the foregoing, and it is an object of the present invention to provide ensureing the battery of the safety of battery
The control method of module, battery system and battery system.
The battery module of embodiment has：Battery；Switch is electrically connected progress to the battery and primary circuit route
Switching；Determination part, voltage to the battery and the electric current for flowing through the battery are measured；Communication unit, can be with outside
It is communicated；And control unit, based on the voltage value determined by the determination part with current value and via the communication unit
The value received from outside, judges whether to be electrically connected the battery with the primary circuit route and controls the switch.
Description of the drawings
Fig. 1 is the block diagram of an example of the composition of the battery module and battery system that illustrate embodiment.
Fig. 2 is the flow chart of an example of the control method of the battery module and battery system that illustrate embodiment.
Fig. 3 is the flow chart of an example for the startup processing for illustrating battery system shown in Fig. 2.
Fig. 4 is the flow chart of an example for the additional processing for illustrating battery module shown in Fig. 2.
Specific implementation mode
Hereinafter, it is described with reference to the battery module of embodiment, the control method of battery system and battery system.
Fig. 1 is the block diagram of an example of the composition of the battery module and battery system that illustrate embodiment.
The battery system 100 of present embodiment has positive terminal PT1, PT2, negative terminal MT1, MT2, communication terminal CT
And 1 or multiple battery modules 10.Positive terminal PT1 is electrically connected with negative terminal MT1 with epigyny device 200.Positive terminal
Sub- PT2 is electrically connected with negative terminal MT2 with load 300.Battery system 100 can via communication terminal CT and epigyny device 200
Communicatedly connect.In addition, can also be by wirelessly being communicated, in the situation between battery system 100 and epigyny device 200
Under can also omit communication terminal CT.In the present embodiment, CAN is pressed between battery system 100 and epigyny device 200
(Controller Area Network：Controller LAN) agreement communicated.
Epigyny device 200 is, for example, the equipment of battery-mounted system 100, including exports charging current to battery system 100
Charger.Load 300 is, for example, AC load, includes that the DC current exported from battery system 100 is converted to alternating current
The inverter of stream.
1 or multiple battery modules 10 are respectively in the side of the positive electrode being electrically connected with positive terminal PT1 and positive terminal PT2
Primary circuit route 101 and with the primary circuit route 102 of negative terminal MT1 and negative terminal the MT2 negative side being electrically connected it
Between, it connects in parallel each other.
1 or multiple battery modules 10 have battery (battery) BT, determination part 12, control unit 14, communication unit respectively
16 and switch SW.
Battery BT has multiple monocells (not shown).Monocell is the secondary monocell that can be charged and discharge, example
Such as it is lithium ion battery or Ni-MH battery.
Determination part 12 have detection battery BT voltage between terminals (voltage of positive terminal and the voltage of negative terminal it
Difference) voltage sensor, the current sensor of electric current of battery BT is flowed through in detection and the temperature of temperature of detection battery BT passes
Sensor.In addition, determination part 12 can also detect the voltage between terminals of the monocell contained by battery BT, and measure each monocell
Voltage between terminals of the summation of voltage between terminals as battery BT.Determination part 12 is supplied to control unit 14 with the defined period and is detected
Voltage value, current value and the temperature value that (or measurement) goes out.
Communication unit 16 is for example configured to according to CAN protocol and PERCOM peripheral communication.Communication unit 16 is received from control unit 14 and is closed
These are exported in voltage value, current value and the temperature value of the battery BT of the battery module 10 of itself, and to epigyny device 200
Value.In addition, communication unit 16 is by the voltage value and electric current of the battery BT of the battery module 10 of itself received from control unit 14
It is worth to other battery modules 10 and exports.In addition, communication unit 16 is received from other battery modules 10 about other battery moulds
The voltage value and current value of the battery BT of block 10, and export these values to control unit 14.
Control unit 14 include calculate mechanism, the calculating mechanism have such as CPU (central processing unit) or
At least one processor (not shown) and at least one processor of MPU (micro processing unit) etc. (is not schemed
Show).
Control unit 14 connects based on the voltage value determined by determination part 12 with current value and via communication unit 16 from outside
The value of receipts judges whether to be electrically connected the battery BT of itself with primary circuit route 101,102 and controls switch SW.At this
In embodiment, the value received from outside via communication unit 16 is about 1 or the battery of multiple other battery modules 10
The voltage value and current value of BT.
Switch SW is the mechanism of the positive terminal and the primary circuit route 101 of side of the positive electrode that switch battery BT being electrically connected,
For example, electromagnetic contactor (contactor).
Next, being illustrated to an example of the action of above-mentioned battery module 10 and battery system 100 with reference to attached drawing.With
Under, after starting to battery module 10, the switch SW of battery module 10 disconnect (positive terminal of battery BT and the main electricity of side of the positive electrode
Road wiring 101 does not turn on) in the state of, an example of the action of the progress of control unit 14 of battery module 10 illustrates.
Fig. 2 is the flow chart of an example of the control method of the battery module and battery system that illustrate embodiment.
First, control unit 14 obtains the voltage value of the battery BT detected in determination part 12 and flows through the electricity of battery BT
Flow valuve.(step ST1)
Then, control unit 14 sends the voltage value and current value obtained by determination part 12 to communication unit 16, and via logical
Letter portion 16 sends the voltage value and current value of battery BT to other battery modules 10.(step ST2)
Next, control unit 14 receives the voltage value of the battery BT exported from other battery modules 10 via communication unit 16
With current value (step ST3).In addition, control unit 14 (such as 1 minute) can also not received from communication unit 16 during the prescribed period
When voltage value and current value about the battery BT of other battery modules 10, it is judged as that other battery modules 10 are not present
(only the battery module 10 of itself is equipped on battery system 100), to carry out the startup processing of battery system 100.
Control unit 14 is with processing below simultaneously and periodically from the voltage value and electricity of the reception battery of determination part 12 BT
Flow valuve, via communication unit 16 to other battery modules 10 receive the battery BT of itself voltage value and current value and via
Communication unit 16 receives the voltage value and current value of the battery of other battery modules 10.
Next, control unit 14 calculates the summation for the current value that from 1 or multiple other battery modules 10 receive
Or average value, judge whether result of calculation is zero (± detection error) [A].(step ST4)
Here, it is preferred that the threshold value being compared with current value to be set as to the value of the detection error comprising current sensor.Example
Such as, if the summation of the current value received from other battery modules 10 is -5[A]Above and 5[A]Range below, then control
Portion 14 processed is judged as that the electric current for flowing through battery BT of 1 or multiple other battery modules 10 is Ling [A], electric from others
The summation for the current value that pond module 10 receives is less than -5[A]Or more than 5[A]When, control unit 14 is judged as 1 or multiple
The electric current Bu Weiling [ for flowing through battery BT of other battery modules 10;A].
In addition, the value of the detection error of current sensor is not limited to above-mentioned value, should suitably be adjusted.For example, electric current
The value of the detection error of sensor may not be constant value but according to the battery module 10 by being equipped on battery system 100
Number of units, when measuring the expressions such as resistance value for being considered as the calculated value of function.
It is Ling [ in the electric current for flowing through battery BT for being judged as other battery modules 10;A]When, control unit 14 carries out battery
The startup of system 100 is handled.(step ST5)
In the electric current Bu Weiling [ for flowing through battery BT for being judged as other battery modules 10;A]When, control unit 14 carries out electricity
The additional processing of pond module 10.(step ST6)
In addition, when battery system 100 only has a battery module 10, control unit 14 can omit above-mentioned steps ST4,
Carry out the startup processing (step ST5) of battery system 100.
Hereinafter, the startup processing to battery system 100 illustrates.
Fig. 3 is the flow chart of an example for the startup processing for illustrating battery system shown in Fig. 2.
In addition, in figure 3, being illustrated including the case where multiple battery modules 10 to battery system 100.In battery system
100 when having a battery module 10, as long as the voltage value of the battery BT of the battery module 10 of control unit 14 itself is normal
Value just can carry out following step ST55, start battery system 100.
Control unit 14 compare the other battery modules 10 received via communication unit 16 whole voltage values, with from survey
The voltage value for determining the battery BT of itself that portion 12 receives, calculates the difference of the maxima and minima in these values, judges to calculate
As a result whether it is within defined threshold value (step ST51).In the present embodiment, such as threshold value is set as 5[V], control unit 14 sentences
Whether disconnected result of calculation is 5[V]Below.
Control unit 14 is defined threshold value (5[ in the difference of the maxima and minima of calculated voltage;V]) below when, warp
From communication unit 16 to 1 or multiple other outputs of battery module 10 indicate that the battery BT of the battery module 10 of itself can fill
Electricity and the value of electric discharge (battery BT capable of being electrically connected with primary circuit route 101,102).(step ST52)
Then, control unit 14 is received via communication unit 16 indicates whether the battery BT of other battery modules 10 can charge
And the value of electric discharge.(step ST53)
Next, control unit 14 based on the value received via communication unit 16, judge whole battery modules 10 whether be
The state that can be charged and discharge.(step ST54)
Control unit 14 be judged as whole battery modules 10 be can charge and discharge state when, control itself
Battery BT is electrically connected by the switch SW of battery module 10 with primary circuit route 101,102.(step ST55)
Control unit 14 be judged as being not at can charge and the battery module 10 of state that discharges there are 1 or more
When, return to step ST51 calculates the difference of the maxima and minima of the voltage value of the whole battery modules 10 received, judges
Whether result of calculation is within defined threshold value.In addition, in step ST54, it is judged as that other battery modules 10 are not at energy
Enough states for charging and discharging refer to, such as other battery modules 10 are followed by being powered compared with the battery module 10 of itself
Source, when not yet starting to start the state of processing, or when other battery modules 10 produce certain abnormal, failure state etc..
Control unit 14 is more than defined threshold value (5[ in the difference of the maxima and minima of calculated voltage;V]) when, into one
Step judges whether the difference of the maxima and minima of the voltage value of other battery modules 10 is within threshold value.(step ST56)
Then, control unit 14 is within threshold value in the difference of the maxima and minima of the voltage value of other battery modules 10
When, it notifies to indicate the value (step that the battery BT of the battery module 10 of itself cannot charge and discharge to other battery modules 10
Rapid ST57), stop the battery module 10 of itself.(step ST58)
When as described above, in the range of being judged as that the voltage value of battery module 10 of itself is not included in regulation, lead to
It crosses and stops the battery module 10 of itself, can only be started in other battery modules 10.In addition, control unit 14 can also
It carries out that user's notice cannot be executed the warning processing for starting processing using such as visual information or auditory information.In addition, control
Portion 14 can also be handled after stopping the battery module 10 of itself, such as according to the additional of aftermentioned battery module, periodically
Judge whether to start, in the start by set date battery module 10 that can start.
If carrying out the startup processing of battery system 100 as described above, battery module 10 can be based in multiple batteries
The voltage value and current value communicated between module 10, judge whether can by the battery BT of the battery module 10 of itself with
Primary circuit route 101,102 is electrically connected.
Hereinafter, the additional processing to battery module 10 illustrates.
Fig. 4 is the flow chart of an example for the additional processing for illustrating battery module shown in Fig. 2.
The current value that flows through battery BT of the control unit 14 based on the other battery modules 10 received via communication unit 16,
Judge whether detect charging current in other battery modules 10.(step ST61)
When detecting charging current in other battery modules 10, control unit 14 judges that the voltage of the battery BT of itself is
It is no than 1 or the voltage of the battery BT of multiple other battery modules 10 it is low as defined in it is more than threshold value.For example, control unit 14 is sentenced
It is disconnected whether the battery BT of the battery module 10 of itself voltage value, with 1 or the battery BT of multiple other battery modules 10
The difference of maximum value of voltage value be defined threshold value (such as 0.55[V]) below and the battery BT of the battery module of itself 10
Voltage value than 1 or the low rule of minimum value of the voltage value of the battery BT of the battery module 10 of multiple other battery modules 10
Fixed threshold value (such as 90[mV]) more than.(step ST62)
Control unit 14 is in the voltage value of the battery BT for the battery module 10 for being judged as itself and 1 or multiple other electricity
The difference of the maximum value of the voltage value of the battery BT of pond module 10 is defined threshold value or less and the electricity of the battery module 10 of itself
The voltage value of pond BT is than 1 or the low regulation of the minimum value of the voltage value of the battery BT of the battery module 10 of multiple battery modules 10
Threshold value more than when, control the switch SW of the battery module 10 of itself, battery BT and primary circuit route 101,102 be electrically connected
It connects.(step ST69)
It as described above, will when lower than the battery BT of other battery modules 10 by the voltage of the battery BT at itself
The battery BT of itself is electrically connected with primary circuit route 101,102, and larger charging current can not be made to flow through other battery moulds
The battery BT of block 10 avoids the battery BT of the failure of battery module 10, protection 1 or multiple other battery modules 10.
In the voltage value of the battery BT for the battery module 10 for being judged as itself and 1 or the battery of multiple battery modules 10
The voltage of the battery BT of the case where difference of the maximum value of the voltage value of BT is more than defined threshold value and the battery module 10 of itself
Value unlike 1 or the minimum value of the voltage value of the battery BT of the battery module 10 of multiple battery modules 10 it is low as defined in threshold value with
When at least one party in the case of upper, control unit 14 periodically obtains the battery BT of the battery module 10 of itself from determination part 12
Voltage value and current value (step ST63), and periodically receive the voltage from other battery modules 10 from communication unit 16
Value and current value (step ST64), execute step ST62 again.
In addition, when not detecting charging current in other battery modules 10, control unit 14 judges in other batteries
Whether discharge current (step ST65) is detected in module 10.When not detecting discharge current in other battery modules 10,
Control unit 14 terminates the additional processing (step 6) of battery module.At this point, control unit 14 can also be configured to upper control 200
Battery system 100 is notified to be possible to the meaning in failure.In addition, in the case where not detecting the failure etc. of battery system 100,
It can be omitted step 65.
When detecting discharge current in other battery modules 10, control unit 14 judges that the voltage of the battery BT of itself is
It is no than 1 or the voltage of the battery of multiple other battery modules 10 it is high as defined in it is more than threshold value.For example, control unit 14 judges
Whether the battery BT of the battery module 10 of itself voltage value and 1 or multiple battery modules 10 battery BT voltage value
The difference of maximum value is defined threshold value (such as 0.55[V]) below and the voltage value ratio of the battery BT of the battery module of itself 10
Threshold value as defined in the maximum value height of the voltage value of the battery BT of the battery module 10 of 1 or multiple battery modules 10 (such as 90
[mV]) more than.(step ST66)
Control unit 14 is in the voltage value of the battery BT for the battery module 10 for being judged as itself and 1 or multiple battery modules
The difference of the maximum value of the voltage value of 10 battery BT is defined threshold value or less and the battery BT of the battery module 10 of itself
Voltage value than 1 or the maximum value of the voltage value of the battery BT of the battery module 10 of multiple battery modules 10 it is high as defined in threshold value
When above, the switch SW of the battery module 10 of itself is controlled, battery BT is electrically connected with primary circuit route 101,102.(step
ST69)
As described above, by the voltage of the battery BT at itself than other battery modules 10 battery BT high when, will
The battery BT of itself is electrically connected with primary circuit route 101,102, and larger discharge current can not be made from other battery modules
10 battery BT flows through, and avoids the battery BT of the failure of battery module 10, protection 1 or multiple battery modules 10.
In the voltage value of the battery BT for the battery module 10 for being judged as itself and 1 or the battery of multiple battery modules 10
The voltage of the battery BT of the case where difference of the maximum value of the voltage value of BT is more than defined threshold value and the battery module 10 of itself
Value unlike 1 or threshold value as defined in the maximum value height of the voltage value of the battery BT of the battery module 10 of multiple battery modules 10 with
When at least one party in the case of upper, control unit 14 periodically obtains the battery BT of the battery module 10 of itself from determination part 12
Voltage value and current value (step ST67), and periodically receive the voltage from other battery modules 10 from communication unit 16
Value and current value (step ST68), execute step ST66 again.
If carrying out the additional processing of battery module 10 as described above, battery module 10 is based in multiple battery modules 10
Between the voltage value and current value that are communicated, being capable of deciding whether can be by the battery BT and master of the battery module 10 of itself
Wiring 101,102 is electrically connected.
In addition, the controlling party of battery module 10, battery system 100 and battery system 100 according to the present embodiment
Method, battery module 10 can not by epigyny device 200 control started running by itself.In the present embodiment, upper
Device 200 for example has monitoring from itself output or the current value inputted to itself, the battery BT received from battery system 100
Voltage value and the fault message of temperature value and battery module 10 etc. function etc..For example, epigyny device 200 monitors
The current value of itself output and the voltage value of the battery BT received from battery system 100 reach defined in electric current and voltage
When value, stop the action of output of electric current etc., no longer needs to carry out complicated control.
In addition, the controlling party of battery module 10, battery system 100 and battery system 100 according to the present embodiment
Method can ensure the safety of battery BT.
Although the description of the several embodiments of the application, but these embodiments are shown as an example, it is not intended to be limited
Surely the range invented.These new embodiments can be implemented in various other forms, in the range for the purport for not departing from invention
It is interior, various omissions, displacement, change can be carried out.These embodiments and modifications thereof are contained in the scope and summary of invention,
And it is contained in the range impartial with it of the invention recorded in claims.
For example, battery module 10 according to the present embodiment and battery system 100, in the power supply of battery module 10
When producing the failures such as broken string in path, failure can be also detected.For example, being supplied from epigyny device 200 to battery system 100
When charging current, roughly equal electric current is flowed through in the battery BT of multiple battery modules 10.In this state, if as multiple
Some failure of battery module 10, and be unable to the state of supplying charging current, then it cannot be examined in the battery module of failure 10
The value of electric current is measured, and the value for flowing through the charging current of other battery modules 10 changes.Due to multiple battery modules
10 share the value for the electric current for flowing through battery BT each other, therefore control unit 14 is capable of detecting when the variation of battery value as described above,
It can carry out fault detect.If control unit 14 detects that a certain battery module 10 is the state that cannot be charged, such as can be to
Epigyny device 200 notifies failure.
In addition, in the above-described embodiment, in the startup processing for carrying out battery system 100, in any battery module 10
In the case of failure, the voltage value of the battery BT of itself can be set as by the control unit 14 of the battery module 10 of failure with current value
Invalid value (such as value outside the range of normal value, maximum value " FFFF " of 16 systems etc.) is to 1 or more via communication unit 16
A others battery module 10 exports.Other battery modules 10 are in the voltage value and current value received via communication unit 16
In there are invalid value in the case of, can be merely with other if can ignore that invalid value and start other battery modules 10
Battery module 10 start.
Claims (6)
1. a kind of battery module, has：
Battery；
Switch switches over the battery with being electrically connected for primary circuit route；
Determination part, voltage to the battery and the electric current for flowing through the battery are measured；
Communication unit can be communicated with outside；And
Control unit is connect with current value and via the communication unit from outside based on the voltage value determined by the determination part
The value received judges whether to be electrically connected the battery with the primary circuit route and controls the switch.
2. battery module as claimed in claim 1, wherein
The control unit can be communicated via the communication unit and with epigyny device and other battery modules,
The control unit upon actuation, is not received via the communication unit from other battery modules during the prescribed period
Value when, be closed the switch and start the charge or discharge of the battery.
3. a kind of battery system, wherein
Have the battery module described in multiple claims 1 or claim 2,
Multiple battery modules are connect with the primary circuit route in parallel,
The control unit is via the communication unit to 1 or multiple others battery modules send the voltage of the battery
Value and current value.
4. a kind of control method of battery system, which is electric made of connecting multiple battery modules in parallel
Cell system,
Multiple battery modules execute following steps respectively：
Measure the voltage value and current value of the battery of itself；
To 1 or multiple others battery module sends the voltage value and current value of the battery of itself；
From 1 or multiple others battery module receives the voltage value and current value of other batteries；
Judge whether the total and/or average value of the current value of other batteries is zero；
When described total and/or average value is zero, the battery of multiple battery modules voltage value maximum value with most
When the difference of small value is defined threshold value or less, battery described in closed pair is electrically connected the switching switched over primary circuit route
Device starts the charge or discharge of the battery.
5. a kind of control method of battery system, which has the multiple electricity connected in parallel via switch
Pond module,
Multiple battery modules execute following steps respectively：
Measure the voltage value and current value of the battery of itself；
To 1 or multiple others battery module sends the voltage value and current value of the battery of itself；
From 1 or multiple others battery module receives the voltage value and current value of other batteries；
Judge whether the total and/or average value of the current value of other batteries is zero；
In described total and/or average value non-zero and when thering is charging current to flow through in other batteries, in multiple batteries
The difference of the maxima and minima of the voltage value of the battery of module is defined threshold value or less and the battery of itself
When more than threshold value as defined in voltage value is lower than the minimum value of the voltage value of other batteries, it is closed the switch and starts
The charging of the battery of itself.
6. a kind of control method of battery system, which has the multiple electricity connected in parallel via switch
Pond module,
Multiple battery modules execute following steps respectively：
Measure the voltage value and current value of the battery of itself；
To 1 or multiple others battery module sends the voltage value and current value of the battery of itself；
From 1 or multiple others battery module receives the voltage value and current value of other batteries；
Judge whether the total and/or average value of the current value of other batteries is zero；
In described total and/or average value non-zero and when flowing through discharge current from other batteries, in multiple battery modules
The battery voltage value maxima and minima difference be defined threshold value below and the battery of itself voltage
When being worth defined threshold value higher than the maximum value of the voltage value of other batteries or more, it is closed the switch and starts described
The electric discharge of the battery of itself.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-040668 | 2016-03-03 | ||
| JP2016040668 | 2016-03-03 | ||
| PCT/JP2017/008582 WO2017150722A1 (en) | 2016-03-03 | 2017-03-03 | Battery unit, battery system, and method for controlling battery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108713274A true CN108713274A (en) | 2018-10-26 |
| CN108713274B CN108713274B (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780014826.5A Active CN108713274B (en) | 2016-03-03 | 2017-03-03 | Battery module, battery system, and control method for battery system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6571267B2 (en) |
| CN (1) | CN108713274B (en) |
| WO (1) | WO2017150722A1 (en) |
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Also Published As
| Publication number | Publication date |
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| JP6571267B2 (en) | 2019-09-04 |
| CN108713274B (en) | 2021-11-19 |
| JPWO2017150722A1 (en) | 2018-11-08 |
| WO2017150722A1 (en) | 2017-09-08 |
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