CN102998625B - Monitor - Google Patents
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- CN102998625B CN102998625B CN201210321587.7A CN201210321587A CN102998625B CN 102998625 B CN102998625 B CN 102998625B CN 201210321587 A CN201210321587 A CN 201210321587A CN 102998625 B CN102998625 B CN 102998625B
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- monitoring arrangement
- charge storage
- storage element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
It is detected promptly that an electric storage device is used in an improper condition that a monitor cannot receive an actuation signal from a load side. Accordingly, the electric storage device does not become in an abnormal state. A monitor 30 monitors a state of a secondary battery 10 that is an electric storage device. The monitor 30 includes a CPU 31, a measurement unit 41, and a wakeup timer 35. The measurement unit detects the state of the secondary battery 10. The wakeup timer 35 counts time. Every time the wakeup timer 35 reaches a certain set time, the monitor 30 is actuated from a sleep state and therefore, the monitor 30 is actuated with every certain actuation period T.; The measurement unit 41 detects values of the battery 10 and the CPU 31 determines if the value detected by the measurement unit 41 is changed from a previous detected value every time the monitor 30 is actuated. If determining that the value is changed, the CPU 31 changes the actuation period T.
Description
Technical field
The present invention relates to the technology that the state to charge storage element is monitored.
Background technology
In following patent documents 1, disclose by performing voltage measuring mode with making voltage monitoring units alternately and sleeping
Sleep mode suppresses the technology of the consumption electric power of secondary cell.
Patent document 1：Japanese Unexamined Patent Publication 8-140204 publications
Monitor that the battery monitoring apparatus of secondary cell receive enabling signal to start generally when battery is used from load-side,
In order to depart from from sleep pattern, the state of secondary cell can be monitored in battery use.
But, in the case of to have used secondary cell from the removed state of load, or logical with load-side
Exist in letter it is ill in the case of, due to enabling signal cannot be received from load-side, so battery monitoring apparatus are still sleeping
Sleep mode, so as to monitor battery with the fixed cycle.Because the state not monitored if the fixed cycle is long can continue, so false
It is located in the case of having carried out unsuitable charging, there is cell voltage can enter using prohibited area (overcharge or overdischarge
Deng) medium, secondary cell can the misgivings as abnormality.In addition, in the capacitor of the problem beyond secondary cell etc.
Can equally occur.
The content of the invention
The present invention is completed based on above-mentioned situation, open not received from load-side it is intended that being detected early
The situation of charge storage element is currently in use in the state of dynamic signal, so that charge storage element will not turn into abnormality.
The present invention is a kind of monitoring arrangement of the state for monitoring charge storage element, is possessed：Measurement portion, its measurement electric power storage unit
The state of part；Timer is waken up, it makes the monitoring arrangement start from sleep state according to the startup cycle for having determined, and makes
The Measurement portion measures the state of the charge storage element；And control device, it there occurs change in the measured value of the Measurement portion
In the case of change, the startup cycle is changed.In addition, so-called measured value there occurs that the situation of change means, the number of measured value
Value is sent out relative to the past measured value such as last or upper last time, a reference value set in advance etc. as the value of comparison other
The situation of change is given birth to.
In the present invention, if measured value is changed, because the startup cycle is changed, so the monitoring of monitoring arrangement is frequently
Degree becomes many.Be currently in use in the state of enabling signal is not received from load-side secondary electricity thereby, it is possible to detect early
The situation of the charge storage elements such as pond.Even if additionally, assume that the state of the charge storage element such as secondary cell there occurs change, due to secondary electricity
The non-monitored state of the charge storage elements such as pond will not for a long time, it is possible to prevent the charge storage elements such as secondary cell from entering overcharging
The abnormalities such as electricity, overdischarge are in possible trouble.
Following composition is preferably as embodiments of the present invention.
The control device changes the startup cycle according to the variable quantity of the measured value.
Control device voltage of the charge storage element when being shifted to sleep pattern is close to full of piezoelectric voltage
Value in the case of, by it is described startup periodic change must be also shorter than initial value.
The Measurement portion measures the voltage and current value of the charge storage element, and the control device is in the charge storage element
Voltage change and in the case that electric current flows through in the charge storage element, carry out the change in the startup cycle.
The charge storage element is the olivine iron based lithium-ion secondary cell that positive pole has used olivine-type ferric phosphate.
The present invention is a kind of monitoring arrangement of the state for monitoring charge storage element, is possessed：Measurement portion, its measurement electric power storage unit
The state of part；Timer is waken up, it makes the monitoring arrangement start from sleep state according to the startup cycle for having determined, and makes
The Measurement portion measures the state of the charge storage element；And control device, it does not occur in the measured value of the Measurement portion
In the case of change, the startup cycle is changed.
Invention effect
In accordance with the invention it is possible to detect the state in the enabling signal that monitoring arrangement is not received from load-side early
Under be currently in use the situation of secondary cell.Furthermore it is possible to prevent secondary cell from entering the abnormalities such as overcharge, overdischarge in not
So.
Brief description of the drawings
Fig. 1 is the block diagram of the electric composition for representing the monitoring arrangement that embodiments of the present invention 1 are related to.
Fig. 2 is the flow chart for representing the handling process for starting periodic change order.
Fig. 3 be represent cell voltage be not changed in the case of monitoring arrangement startup the cycle figure.
Fig. 4 be represent cell voltage change in the case of monitoring arrangement startup the cycle figure.
Fig. 5 is the figure in the startup cycle for representing the monitoring arrangement that embodiments of the present invention 2 are related to.
Fig. 6 is the figure of the charge characteristic for representing olivine iron based lithium-ion secondary cell.
Fig. 7 is the flow chart of the handling process for representing the startup periodic change order that embodiments of the present invention 3 are related to.
Symbol description：
10：Secondary cell (one of " charge storage element " of the invention)；20：Charger；30：Monitoring arrangement；31：CPU (this
One of " control device " of invention)；35：Wake up timer；41：Measurement portion；T：The startup cycle；S1：Internal enabling signal；
Sa：Sleep signal；Sb：External start signal.
Specific embodiment
<Implementation method 1>
Embodiments of the present invention 1 are illustrated by Fig. 1 to Fig. 4.
Monitoring arrangement 30 is assembled with the one of secondary cell 10 as of charge storage element, for monitoring secondary cell 10
State, specifically for monitoring cell voltage, battery temperature, current value.The composition of monitoring arrangement 30 is as shown in figure 1, adopt
With including with the composition of lower component：(wake up timer) 35, house dog is fixed for CPU31, clock oscillator 33, wake-up timer
When device (watchdog timer) 37, Measurement portion 41, A/D converter 43, RAM45, ROM47, communication interface 49.In addition, CPU31
It is of control device of the invention.
Measurement portion 41 undertakes cell voltage (voltage between terminals), battery temperature, the work(of current value of measurement secondary cell 10
Energy.The measured values such as the cell voltage of secondary cell 10, battery temperature, current value are converted to digital value and defeated by A/D converter 43
Go out to CPU31.The cell voltage of secondary cells 10 of the CPU31 to being taken into by A/D converter 43, the information of battery temperature are carried out
Whether parsing is no abnormal in the secondary battery 10 to monitor, that is, monitor the state of battery.RAM45 is deposited as the work of CPU31
Reservoir is used.ROM47 stores the data needed for for performing program, the various computings for starting periodic change order described later
Deng.
There are measurement pattern and sleep pattern (low consumption power mode) this 2 patterns to set in monitoring arrangement 30.Measurement
Pattern is the pattern for measuring the cell voltage of secondary cell 10, battery temperature, current value to monitor the state of battery, in the pattern
It is middle to provide electric power to monitoring arrangement 30 is overall.
Sleep pattern is the pattern of the monitoring and sleep state (also referred to as stopping) that battery is repeated.Monitoring arrangement 30 leads to
Cross and receive to start from the inside enabling signal S1 for waking up timer 35 in sleep pattern, so as to according to fixed startup week
Phase T monitors the state of battery, turns into sleep state in the case of in addition.In addition, waking up timer 35 pairs starts week
Phase T is counted and is exported internal enabling signal S1, thus play make monitoring arrangement 30 according to the startup cycle T for having determined from
Sleep state starts, and makes cell voltage, electric current, the work(of temperature of the measurement secondary cell 10 of Measurement portion 41 of monitoring arrangement 30
Energy.
In a sleep state, only to the clock oscillator 33 in monitoring arrangement 30, wake-up timer 35, communication interface 49
Electric power is provided, the electric power offer for each portion in addition is stopped, it is possible to suppressing the power consumption of secondary cell 10.
In addition, can by making monitoring arrangement 30 suppress the power consumption of secondary cell 10 as sleep state the reason for be, supervise
View apparatus 30 receive electric power and provide from secondary cell 10.
In addition, using following compositions：By control system from load-side (for example, if vehicle-mounted secondary cell 10
Situation, then refer to vehicle-mounted EUC) output 2 control signals Sa, Sb come control measurement pattern and sleep pattern pattern turn
Move.That is, the control system of load-side is detecting situation of unused state fixed duration of secondary cell 10 etc., to sleeping
At the time point of the jump condition of sleep mode transfer, sleep signal Sa is exported by communication interface 49, and make monitoring arrangement 30 to sleeping
Sleep mode is shifted.
Additionally, the control system of load-side is when using battery, external start signal Sb is exported by communication interface 49, and
Monitoring arrangement 30 is set to be shifted to measurement pattern.Therefore, if secondary cell 10 is in can receive external start signal from load
The state of Sb, then monitor the use state of secondary cell 10 when battery is used by monitoring arrangement 30.
But, in the case of to have used secondary cell 10 from the removed state of load or with load-side
Exist in communication it is ill in the case of, due to external start signal Sb cannot be received from load-side, so monitoring arrangement 30 has
When can be still sleep state, so as to monitoring battery with the fixed cycle set in advance.Thus, carried out according to secondary cell 10
Situations such as time of unsuitable charging, from battery monitor monitoring next time untill during, battery can enter abnormal
State, such as cell voltage enter use prohibited area (overcharge, overdischarge etc.).
Therefore, in the present embodiment, in a sleep mode the cell voltage of secondary cell 10 than last measured value
In the case of changing, the monitoring period that cycle T is monitored secondary cell 10 to shorten by monitoring arrangement 30 is started by changing, from
And can detect early be currently in use secondary cell in the state of external start signal Sb is not received from load-side
Situation, and the entrance of secondary cell 10 is prevented from using prohibited area in possible trouble.
Hereinafter, reference picture 2 come illustrate change monitoring arrangement 30 startup cycle T startup periodic change sequentially.In addition, setting
Secondary cell 10 is initially equipped in load, and it is 60sec to wake up the setting time of timer 35, the i.e. initial value of startup cycle T.
Start periodic change order to detect the jump condition shifted from measurement pattern to sleep pattern, and from load-side
Start for condition to the output of monitoring arrangement 30 sleep signal Sa.
If monitoring arrangement 30 receives sleep signal Sa, the sleep of consumption electric power is suppressed as sleep pattern is transferred to
State.That is, only clock oscillator 33, wake-up timer 35, communication interface 49 receive electric power and provide and turn into working condition, for
The electric power in each portion in addition is provided and is stopped (S10).
Wake up the time started after being shifted to sleep state of timer 35 timing, if setting time is reached to
The internal enabling signal S1 of CPU31 outputs.Here, because the initial value of setting time is 60sec, so turning to sleep state
The time point of 60sec is have passed through from during the transfer of shifting, internal enabling signal S1 is exported to CPU31 from timer 35 is waken up.
If CPU31 receives internal enabling signal S1, each portion of monitoring arrangement 30 is powered, start monitoring arrangement 30
(S20、S30).Afterwards, the cell voltage to secondary cell 10, battery temperature, current value are performed by Measurement portion 41 to survey
The treatment of amount.
Then, the measured value for being measured by Measurement portion 41 is changed to after digital value by A/D converter 43, is taken into
CPU31(S40).If being taken into measured value, CPU31 judges whether measured value there occurs change than the last time.Specifically, sentence
Whether the cell voltage for determining secondary cell 10 there occurs change (S50) than last measured value.In addition, as determinating reference,
It is preferred that secondary cell 10 cell voltage than upper once measurement variation more than setting (for example, more than 0.05V)
In the case of, it is judged to change.So, because the minor variations of the cell voltage that can cause by behaviour in service are (even without entering
The voltage change that unsuitable charging of row etc. can also cause), will not be judged to change.Additionally, in first judgement, due to not
In the presence of last measured value, so by just into the newest measured value measured under the measurement pattern before sleep pattern
It is judged to last measured value.Here, if measured value is not changed in going on to say.
Afterwards, treatment is transferred to S70, and the setting time for waking up timer 35 is maintained at initial value.Afterwards, treatment is returned
S10, monitoring arrangement 30 is transferred again into sleep state.Then, it is defeated to CPU31 if waking up timer 35 reaches setting time
Go out internal enabling signal S1, start monitoring arrangement 30 (S20, S30).
Thus, monitoring arrangement 30 starts, and measures cell voltage, battery temperature, the current value of secondary cell 10.If secondary
The cell voltage of battery 10 is not changed in, then be judged to "No" in S50, and the setting time for waking up timer 35 is maintained at just
Initial value.
Therefore, if cell voltage 10 continues than the state that last measured value is not changed in, monitoring arrangement 30 is such as
Turn into following states shown in Fig. 3：Repeat to start with the interval of 60sec to monitor the state of secondary cell 10.
Then, the feelings for being charged after the secondary cell 10 for being carried is removed together with charger 20 from load
In the case that condition, the charger beyond by the charger 20 for assembling together are charged, the cell voltage of secondary cell 10
Rise, so as to be changed than last measured value.Thus, in the judgement followed by S50, it is judged to "Yes".
In this case, CPU31 changes wake up the setting time of timer 35 to shorten the startup cycle T of monitoring arrangement 30.For example, will call out
The setting time of timer 35 of waking up is changed to 30sec from 60sec, by the startup cycle T of monitoring arrangement 30 from the 60sec of initial value
It is changed to 30sec.
Thus, monitoring arrangement 30 is started when followed by monitoring with the interval of 30sec.Then, if monitoring
Result is that cell voltage is not changed in, then the setting time for waking up timer 35 is returned as initial value by CPU31, if battery is electric
The state changed than last measured value is pressed to continue, then the setting time for waking up timer 35 is maintained change by CPU31
More value, i.e. 30sec.
Thus, it (is in the example in fig. 4 proportional that the cell voltage in secondary cell 10 changes relative to time shaft
Change) state continue in the case of, monitoring arrangement 30 is in start with the interval of 30sec repeatedly carries out secondary cell 10
The state of monitoring.
If the change of cell voltage continues repeatedly, CPU31 can interpolate that to be not receive outside from load-side
Secondary cell 10 is currently in use in the state of enabling signal Sb.Also, in the present embodiment, in the battery electricity of secondary cell 10
In the case that pressure there occurs change than last measured value, due to shortening the startup cycle T of monitoring arrangement 30, so repeatedly
Time needed for measurement shortens.
Therefore, compared with the situation that the startup cycle T of monitoring arrangement 30 is not changed than initial value, can examine early
Survey is currently in use the situation of secondary cell 10 in the state of external start signal Sb is not received from load-side.In addition,
Detect in the case where secondary cell 10 is currently in use in the state of not receiving external start signal Sb from load-side, prison
The CPU31 of view apparatus 30 carries out the abnormal treatment of alarm, for example, light the treatment of abnormality alarm lamp or ring buzzer etc..
Additionally, the startup cycle T by shortening monitoring arrangement 30, so that the monitoring period of secondary cell 10 shortens, so
Relay R was switched off before overcharge is entered to stop charging, thus, it is possible to prevent secondary cell 10 from turning into overcharge in not
So.
In addition, in advance by threshold value be set in secondary cell 10 full of piezoelectric voltage near, it is super in the cell voltage for measuring
In the case of going out threshold value and continuing to rise, if as shown in figure 4, change the startup cycle T of monitoring arrangement 30 further short,
Then can more reliably prevent secondary cell 10 from entering overcharge.
<Implementation method 2>
Next, illustrating embodiments of the present invention 2 by Fig. 5, Fig. 6.In implementation method 1, secondary electricity is listed
The cell voltage in pond 10 relative to the example that time shaft is proportionally elapsed, list by the startup cycle T of monitoring arrangement 30 from
60sec is changed to the example of 30sec.
In implementation method 2, the variable quantity of the measured value according to cell voltage changes startup cycle of monitoring arrangement 30
T.Specifically, the variable quantity of the measured value of cell voltage is bigger, then more shorten and start cycle T.Thus, for example, such as Fig. 5 institutes
Show, in the case where cell voltage is elapsed relative to time shaft with the curve close to conic section, warp over time
Cross, the startup cycle T of monitoring arrangement 30 is set to shorter.
So, if the change quantitative change of cell voltage (cell voltage) starts greatly and close to full of piezoelectric voltage
Cycle T shortens, and the monitoring frequency monitored to secondary cell 10 by monitoring arrangement 30 becomes many.Thereby, it is possible to prevent secondary cell 10
As overcharge in possible trouble.In addition, as the secondary electricity of the characteristic for being sharply increased in the final voltage that charges as shown in Figure 5
Pond, it is known that olivine iron based lithium-ion secondary cell.Olivine iron system battery is one kind of lithium ion battery, and positive pole uses olive
Stone-type ferric phosphate, i.e. LiFePO4 (LiFePO4), negative pole use such as carbon etc..Olivine iron based lithium-ion secondary cell such as Fig. 6
It is shown because being of about 3.5V full of piezoelectric voltage, close to full of piezoelectric voltage 3.45V~3.5V between, if in advance
First will start cycle T be set to it is shorter, then because it is fully charged nearby battery monitoring frequency increase, it is possible to more reliably
Prevent olivine iron based lithium-ion secondary cell 10 from entering overcharge.
<Implementation method 3>
Next, illustrating embodiments of the present invention 3 by Fig. 7.Startup cycle of the implementation method 3 to implementation method 1
Change order has added the treatment of S3 and S5, treatment (specifically, the treatment of S10~S70) in addition and implementation method 1
Startup periodic change order it is identical.Therefore, here, it is merely illustrative the treatment as the S3 and S5 of difference.
As shown in fig. 7, in implementation method 3, if detecting the jump condition shifted to sleep pattern and defeated from load-side
Go out sleep signal Sa, then monitoring arrangement 30 carries out following treatment first：The secondary cell 10 that judgement is measured in measurement pattern
Nearest cell voltage whether be full of piezoelectric voltage nearby (S3).Specifically, by newest cell voltage with preset
Threshold value (close to full of piezoelectric voltage numerical value) be compared, if newest cell voltage exceed threshold value, be judged to be
Full of piezoelectric voltage nearby (judgement "Yes"), in the case of less than threshold value, it is judged to that not being filled with piezoelectric voltage nearby (judges
"No").
(the S3 in the case where being judged to not be filled near piezoelectric voltage：It is no), treatment is transferred to S10.After being shifted to S10
Treatment is identical with implementation method 1, in the case that once measured value is not changed in, is supervised than upper in the cell voltage of secondary cell 10
View apparatus 30 are started with the startup cycle T of 60sec, monitor secondary cell 10, if cell voltage is changed, change starts
Cycle T.
Next, in the case where being judged to be filled near piezoelectric voltage (S3：It is), treatment is transferred to S5.In S5, lead to
Cross CPU31 and the setting time for waking up timer 35 is changed to the time also shorter than initial value.If waking up setting for timer 35
The initial value fixed time is 60sec, then when the setting time for waking up timer 35 being set as into also shorter than 60sec in S5
Between, such as 30sec.Thus, monitoring arrangement 30 is than initially to the transfer of sleep pattern with the startup also shorter than initial setting
Cycle T starts, and monitors secondary cell 10.
So, the stage before from measurement pattern to the transfer of sleep pattern, is to fill in the cell voltage of secondary cell 10
In the case of near full electricity, if the startup cycle T of monitoring arrangement 30 is set to, than initially also short, to be prevented from secondary electricity
Pond turns into overcharge in possible trouble.
<Other embodiment>
The present invention is not limited to by above-mentioned narration and the implementation method for illustrating, such as such below to implement
Mode is also included in the technical scope of the present invention.
(1) in the above-described embodiment, show by monitoring arrangement 30 come the example of the state for monitoring secondary cell 10, but
The supervision object for being monitoring arrangement 30 can be charge storage element (element of savings electricity), can also be supervised in addition to secondary cell 10
The state of apparent capacity device.Additionally, in the above-described embodiment, although show by CPU31 to constitute the example of control device,
But can also be made up of hardware circuit.
(2) in the above-described embodiment, the cell voltage listed in secondary cell 10 has change than upper once measured value
In the case of change, the example of the startup cycle T of monitoring arrangement 30 is changed.But in addition for example can also be in secondary cell 10
Battery temperature changed than last measured value in the case of, change monitoring arrangement 30 startup cycle T.Represent secondary electricity
The information of the state in pond 10 is in addition to battery temperature, or SOC (State of Charge), current value, inner pressure of battery
Etc. the amount for being able to detect that battery is abnormal possibility.For example, by taking electric current as an example, being disappeared by secondary cell 10 in parking of automobile
During the dark current of consumption is for the system of below 100mA, if dark current is, less than 100mA, to set monitoring arrangement 30 for normal value
It is 60 seconds (initial value) to start cycle T.On the other hand, if more than 100mA, then will start cycle T and be set as 30 seconds without exception
Cycle, or startup cycle T is periodically shortened according to the level of dark current.For example, the capacity in secondary cell 10 is
It is 0.1CA in dark current if it is 30 seconds to start cycle T in the case that 60Ah and dark current are less than 100mA~0.1CA (6A)
In the case of (6A)~0.5CA (30A), if it is 20 seconds to start cycle T, in the case where dark current is more than 0.5CA (30A),
If it is 10 seconds to start cycle T.Additionally, in addition to the foregoing, it is also possible to determine to start cycle T based on multiple measured values.For example,
In the case where electric current and cell voltage combining and both sides being more than setting level, exceed with an only wherein side and set
The situation for determining level is compared, and can further speed up startup cycle T.
(3) in the above-described embodiment, the measured value listed in secondary cell 10 there occurs than upper once measured value
In the case of change, the example of the startup cycle T of monitoring arrangement 30 is changed.The comparison other of the measured value of secondary cell 10 except
Can be upper last measured value, a reference value beyond last measured value, it is also possible to secondary cell 10 measured value compared with
In the case that last measured value, a reference value are changed, the startup cycle T of monitoring arrangement 30 is changed.
(4) in the above-described embodiment, although the cell voltage exemplified with secondary cell 10 is once measured relative to upper
The situation (charging) changed on the big direction of value change, but the present invention also can once be surveyed suitable for cell voltage relative to upper
The situation (electric discharge) changed on the direction that value diminishes.In addition, cell voltage is on the direction diminished than upper once measured value
The situation of change is also identical with situation about changing on the direction for becoming big, shortens the prison for starting cycle T to shorten monitoring arrangement 30
Apparent cycle.
(5) in the above-described embodiment, show monitoring arrangement 30 receive from load-side output sleep signal Sa and from
Measurement pattern is transferred to the example of sleep pattern, but monitoring arrangement 30 self can also detect the transfer shifted to sleep pattern
Condition, so as to be shifted to sleep pattern.
(6) in the above-described embodiment, although using sleep signal Sa and external start signal Sb as respectively different letter
Number, but this 2 signals Sa, Sb as 1 signal can also be controlled monitoring by " High "/" Low " of signal level
The mode shifts of device 30.
(7) in the above-described embodiment, the cell voltage listed in secondary cell 10 there occurs than upper once measurement
In the case of change, change monitoring arrangement 30 startup cycle T example, but except will flow through electric current as change condition with
Outward, it is also possible to changed and electric current flows in the secondary battery 10 than upper once measurement in the cell voltage of secondary cell 10
In the case of crossing, the startup cycle T of monitoring arrangement 30 is changed.So, it is effective in following point.Typically, due to discharge and recharge knot
There is the region that cell voltage changes in the of short duration period after beam, so being turned to open if only by the change of cell voltage
The change condition of dynamic cycle T, even if then under the usual state for not carrying out unsuitable charging, it is also possible to change the startup cycle
T.If at this point, do not changed in the state of generally and opened plus electric current is flowed through in the change condition in the cycle of startup
Dynamic cycle T, can only change in the case where unsuitable use (such as charging) has been carried out and start cycle T.
(8) in implementation method 2, although illustrate that the variable quantity of the measured value of cell voltage is bigger, then more shorten and start
The example of cycle T, but startup cycle T can also be changed according to the variable quantity of measured value, for example come in following modes
Change the startup cycle T of monitoring arrangement 30.As shown in fig. 6, olivine iron based lithium-ion secondary cell is used being full of piezoelectric voltage
About 3.5V, the voltage for being usually 3.3V~3.5V.In this case, 200mVs of the use scope E of battery for 3.3V~3.5V,
Its 10 be 20mV.Therefore, when the startup cycle T when measured value is not changed in is set to the 60sec of initial value,
In the case that measured value has changed equivalent to the 20mV using 1/10th of scope than last time measurement, cycle T will be started
It is changed to from 60sec secondly the 30sec (pattern 1) of a times for dividing.Additionally, in measurement variation equivalent to using the hundred of scope
In the case of/bis- ten 40mV, cycle T will be started and be changed to its a quarter 15sec (pattern 2) again from 60sec.This
Outward, in measurement variation 20mV and cycle T will be started and is changed to after 30sec from the 60sec of initial value, measured next time
In the case of middle measurement variation 40mV, will start cycle T be changed to from 30sec secondly point one times of 15sec, in measurement
In the case of value changes and last variable quantity identical 20mV, cycle T will be started remain unchanged and be set to 30sec (pattern 3).This
Outward, make startup cycle T change mode except it is above-mentioned so start cycle T on be multiplied by it is corresponding with the variable quantity of measured value normal
Subtracted often from cycle T is started beyond the method for number (1/2 or 1/4), or according to the size of the variable quantity of measured value
The method of number (20sec, 40sec).
(9) in the above-described embodiment, although list the cell voltage in secondary cell 10 than upper once measured value
In the case of changing, the example of the startup cycle T of monitoring arrangement 30 is changed, but can also be in the battery of secondary cell 10 electricity
In the case that pressure does not change than last measured value, a reference value, the startup cycle is changed.Specifically, in measured value
In the case of being not changed in, because the inappropriate possibility for using of secondary cell 10 is relatively low, even if so by monitoring arrangement 30
The startup cycle is elongated, and it is relatively low that abnormal possibility occurs in secondary cell 10.Thus, if it is initial value to start cycle T
60sec, then in the case where measured value is not changed in, can will start cycle T and be set as that 90sec, 120sec etc. compare initial value
Value also long.If starting, cycle T is elongated, because can correspondingly suppress the consumption electric power of monitoring arrangement 20, it is
Effectively.In addition, being changed in the case where the cell voltage of secondary cell 10 is not changed in than upper once measured value, a reference value
Start the control of cycle T, it is also possible to and start the control of cycle T as the change in the case where changing.I.e., it is possible to there is change
Cycle T will be started in the case of change and change shorter, cycle T will started in the case where being not changed in and changes more long.
Claims (4)
1. a kind of monitoring arrangement, the state to charge storage element monitors that the monitoring arrangement possesses：
Measurement portion, the state of its measurement charge storage element, acquisition is able to detect that the charge storage element is abnormal possibility
Amount；
Timer is waken up, it makes the monitoring arrangement start from sleep state according to the startup cycle for having determined, and made described
Measurement portion measures the state of the charge storage element；And
Control device, it changes the startup cycle in the case where the measured value of the Measurement portion there occurs change,
The control device changes the startup cycle according to the variable quantity of the measured value.
2. monitoring arrangement according to claim 1, it is characterised in that
Control device voltage of the charge storage element when being shifted to sleep pattern is close to the value full of piezoelectric voltage
In the case of, must be also shorter than initial value by the startup periodic change.
3. monitoring arrangement according to claim 1, wherein,
The Measurement portion measures the voltage and current value of the charge storage element,
The control device is in the situation that the voltage of the charge storage element changes and electric current flows through in the charge storage element
Under, carry out the change in the startup cycle.
4. monitoring arrangement according to any one of claim 1 to 3, wherein,
The charge storage element is the olivine iron based lithium-ion secondary cell that positive pole has used olivine-type ferric phosphate.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-197077 | 2011-09-09 | ||
| JP2011197077 | 2011-09-09 | ||
| JP2012176839 | 2012-08-09 | ||
| JP2012-176839 | 2012-08-09 |
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| CN102998625A CN102998625A (en) | 2013-03-27 |
| CN102998625B true CN102998625B (en) | 2017-05-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023090605A1 (en) * | 2021-11-16 | 2023-05-25 | 주식회사 엘지에너지솔루션 | Device for managing battery and method for controlling battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE112016007120T5 (en) * | 2016-08-05 | 2019-04-25 | Mitsubishi Electric Corporation | Security Monitor |
| CN112425023A (en) * | 2018-07-11 | 2021-02-26 | 株式会社村田制作所 | Control device, battery pack, electric vehicle, control method, and control method for battery pack |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101943929B1 (en) | 2019-01-30 |
| KR20130028663A (en) | 2013-03-19 |
| CN102998625A (en) | 2013-03-27 |
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