CN103138017A - Battery control apparatus - Google Patents
Battery control apparatus Download PDFInfo
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- CN103138017A CN103138017A CN2012105078200A CN201210507820A CN103138017A CN 103138017 A CN103138017 A CN 103138017A CN 2012105078200 A CN2012105078200 A CN 2012105078200A CN 201210507820 A CN201210507820 A CN 201210507820A CN 103138017 A CN103138017 A CN 103138017A
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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
Abstract
The invention relates to a battery control apparatus capable of detecting micro-short circuit during interruption. The battery control apparatus is provided with a battery (100) containing a plurality of single batteries (C1-CN), wherein the battery is provided with an adjustment unit adjusting voltage or a charging state of the plurality of single batteries to regulated target values; a calculation unit calculating actual adjustment time, adjustment time of per unit time of actual adjustment and adjustment capacity of actual adjustment until voltage or the charging state of the plurality of single batteries is adjusted to the regulated target values; a storage unit storing a calculation value obtained by the calculation unit; and a determination unit utilizing the above calculation value to determine faises caused by the micro-short circuit in the battery.
Description
Technical field
The present invention relates to the control device of battery pack.
Background technology
The known checkout gear that extremely detects to electrical storage device, this electrical storage device is to connect by a plurality of Reserve Power Divisions that will comprise at least a charge storage element to consist of, the abnormal detector of this electrical storage device possesses: the equalization handling part, and it is repeatedly carried out and makes above-mentioned a plurality of Reserve Power Division capacity separately or the processing of the deviation equalization of voltage; This equalization processing and the time interval between another equalization performed before this equalization processing is processed when it is through with an equalization processing when above-mentioned equalization handling part, are calculated by equalization processing interval calculation section; The abnormal warning judging part that occurs, be compared to and be judged as that above-mentioned electrical storage device is in the state that approaches with abnormality and the time of setting is short in the situation that time interval that interval calculation section calculates is processed in above-mentioned equalization, this abnormal warning judgement section judges that occurs is that above-mentioned electrical storage device is in the state that approaches with abnormality; Abnormal judgment value calculating part, in the situation that above-mentioned abnormal generation warning judgement section judges is that above-mentioned electrical storage device is in the state that approaches with abnormality, this abnormal judgment value calculating part uses the charge/discharge capacity of above-mentioned electrical storage device measured after this judgement, calculates that absolute value to the charging and discharging currents of above-mentioned electrical storage device carries out integration and the abnormal judgment value that obtains; And extremely judge handling part, in the situation that the abnormal judgment value that above-mentioned abnormal judgment value calculating part calculates is more than or equal to as being judged as that above-mentioned electrical storage device is in abnormality and the fiducial value of the regulation set, this judges that extremely handling part is judged as above-mentioned electrical storage device and is in abnormality (patent documentation 1).
Patent documentation 1: TOHKEMY 2008-134060 communique
Summary of the invention
The problem that invention will solve
Yet, have following problem: between the stand-down that abnormal detector stops, can not carry out integration to charging and discharging currents, can't detect the abnormal of the battery that occurs between this stand-down.
The problem to be solved in the present invention is to provide a kind of control device of battery pack, the micro-short circuit that occurs in can detecting between stand-down.
For the scheme of dealing with problems
the present invention addresses the above problem by following mode: calculate the adjustment time that the voltage of a plurality of monocells or charged state is adjusted into actual needs till desired value, use the adjustment number of times of actual each unit interval of adjusting of adjustment unit, use the actual adjustment capacity of adjusting of adjustment unit, in the situation that the slope of the calculated value before between the stand-down of control device and between stand-down after the variable quantity of the difference of slope of the calculated value calculated value before and after within the limits prescribed and between stand-down larger than the threshold value of expression micro-short circuit, be judged as because the abnormal of battery pack occured the micro-short circuit in battery pack.
The effect of invention
According to the present invention, slope by the calculated value before and after comparing between stand-down, the variation of the calculated value that causes due to deterioration of battery in can grasping between stand-down, and can detect micro-short circuit according to the variable quantity of the calculated value before and after between stand-down, therefore can detect accurately the abnormal of the battery pack that causes because of micro-short circuit.
Description of drawings
Fig. 1 is the structure chart of the battery pack system of the related control device that comprises battery pack of embodiments of the present invention.
Fig. 2 is the block diagram of the battery controller of Fig. 1.
Fig. 3 means the curve chart of adjustment time response in respect of time in the battery pack of Fig. 1.
Fig. 4 means the flow chart of the control step in the battery controller of Fig. 2.
Fig. 5 is in the control device of the related battery pack of other execution mode of the present invention, the curve chart of adjustment time response in respect of time in battery pack.
Fig. 6 is in the control device of the related battery pack of other execution mode of the present invention, the flow chart of the control step of expression battery controller.
Fig. 7 means the curve chart of adjustment time response in respect of time in the control device of the battery pack that variation of the present invention is related.
Description of reference numerals
100: battery pack; C1 ~ CN, Cp: monocell; 102: temperature sensor; 200: load; 300: current sensor; 400: the capacity Circuit tuning; 401: resistance; 402: switch; 500: battery controller; 501: voltage detection department; 502: current detecting part; 503: the battery temperature test section; 504: the capacity adjustment part; 505: control part; 506: abnormal judging part; 507: storage part; 508: calculating part; 509: actual measurement section; 510: Department of Communication Force.
Embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.
The first execution mode
Fig. 1 is the structure chart of the battery pack system of the related control device that comprises battery pack of present embodiment.Below, the situation that the related battery pack system of example present embodiment is used as for motor vehicle battery of motor vehicle driven by mixed power, electric automobile etc. describes.
As shown in Figure 1, the related battery pack system of present embodiment possesses: battery pack 100, and it possesses a plurality of monocell C1 ~ CN that are connected in series; Load 200, it is connected electrically in the two ends of battery pack 100; Capacity Circuit tuning 400, it is used for battery pack 100 is carried out the capacity adjustment; And battery controller 500, it is controlled battery pack system integral body.
N the monocell C1 ~ CN that consists of battery pack 100 is connected in parallel to respectively capacity Circuit tuning 400.Capacity Circuit tuning 400 is made of resistance 401, switch 402, by turn on-switch 402, and monocell is carried out capacity adjustment discharge, can carry out the capacity adjustment to monocell.In addition, control switching on and off of each switch 402 by battery controller 500.
Load 200 for example, when Regeneration control, via motor and inverter, is inversely transformed into electric energy such as being motor and the inverter that carries in motor vehicle driven by mixed power, electric automobile vehicle etc., and battery pack 100 can be charged.In addition, for example battery pack 100 also can be charged by being connected with not shown external power source.
Fig. 2 is the block diagram of the function of battery controller 500.As shown in Figure 2, battery controller 500 possesses voltage detection department 501, current detecting part 502, battery temperature test section 503, capacity adjustment part 504, control part 505, abnormal judging part 506, storage part 507, calculating part 508, actual measurement section 509, Department of Communication Force 510.
Thereby voltage detection department 501 consists of the magnitude of voltage of terminal voltage of each monocell C1 ~ CN of battery pack 100 to be detected by the time sequence measuring with cycle of regulation via a plurality of terminal lines that are connected with each monocell C1 ~ CN, be digital signal with the terminal voltage of each monocell of measuring from analog signal conversion, and send to control part 505.In addition, as the method for the terminal voltage of measuring each monocell, such as enumerating striding capacitance mode etc.
Current detecting part 502 obtains by current sensor 300 with the cycle of regulation and detects the charging and discharging currents that obtains, and is digital signal with the charging and discharging currents that obtains from analog signal conversion, and sends to control part 505.In addition, current sensor 300 is such as being made of resistive element, current transformer etc.
Battery temperature test section 503 obtains the temperature of each monocell C1 ~ CN that the temperature sensor 102 that possessed by battery pack 100 measures with the cycle of regulation, be digital signal with the temperature of each monocell C1 ~ CN of obtaining from analog signal conversion, and send to control part 505.
In the situation that the deviation of the charged state of the terminal voltage in each monocell C1 ~ CN or each monocell C1 ~ CN (SOC:State of Charge) is more than setting, instruction is adjusted according to the capacity from control part 505 in capacity adjustment part 504, control switching on and off of each switch 402 that each capacity Circuit tuning 400 possesses, thus battery pack 100 is carried out the capacity adjustment.
At this, the voltage difference threshold value refers to following such threshold value: the size of the deviation of this voltage difference threshold value and each monocell adapts, and by reducing this threshold value, the deviation condition is become strictly, makes the deviation condition become loose by increasing this threshold value.In this example, also the voltage difference threshold value can be changed into value arbitrarily.
And instruction is adjusted according to capacity in capacity adjustment part 504, makes as the switch 402 of the monocell C1 ~ CN that adjusts object in the adjustment time that is calculated by actual measurement described later section 509 and connects, and carries out thus the capacity adjustment.Voltage detection department 501 also detects the voltage of monocell in the capacity adjustment.And the detection voltage of the monocell in the capacity adjustment becomes target equalization voltage V
tarThe time, control part 505 is to the instruction of capacity adjustment part 504 transmission expression end capacity adjustment.Capacity adjustment part 504 disconnects switch 402 according to this instruction, and the end capacity is adjusted thus.Capacity adjustment part 504 and control part 505 as the battery of adjusting object, carry out the capacity adjustment for other similarly.Thus, capacity adjustment part 504 is by controlling switching on and off of each switch 402, so control so that the voltage of each monocell C1 ~ CN at target equalization voltage V
tarThe place becomes equalization, can carry out the capacity adjustment thus.Perhaps, capacity adjustment part 504 is adjusted instruction according to capacity and is controlled switching on and off of each switch 402, carry out the capacity adjustment thus so that each monocell C1 ~ CN becomes respectively assigned voltage, afterwards, repeatedly discharge and recharge in battery pack 100, so control also can make each monocell C1 ~ CN voltage at target equalization voltage V
tarThe place becomes equalization.
Storage part 507 is following memories: will adjust the required adjustment time as the capacity of the monocell C1 ~ CN of the calculated value that is calculated by calculating part 508, adjust the data relevant to the capacity adjustment of battery pack 100 such as beginning or concluding time and store with time series.
Calculating part 508 calculates by capacity adjustment part 504 voltages with each monocell C1 ~ CN and is made as target equalization voltage V
tarTill time, be used as the adjustment time.In the situation that carry out capacity adjustment by discharge, the adjustment time of adjusting capacity is equivalent to make the time of each switch 402 connections.Owing to coming switching on and off of control switch 402 by capacity adjustment part 504, therefore, the turn-on time of actual measurement section 509 measuring switch 402, can calculate thus actual capacity and adjust the time in the control of capacity adjustment part 504.And the moment of the adjustment time that calculating part 508 will calculate and the adjustment of enforcement capacity is stored in storage part 507 explicitly.
In addition, can come calculated capacity to adjust the time according to the resistance value of the detection voltage of each monocell C1 ~ CN and resistance 401, so actual measurement section 509 also can calculate by the detection voltage that utilizes each monocell C1 ~ CN, come thus calculated capacity to adjust the time.In addition, in the situation that carry out capacity adjustment by discharging and recharging, also can become target equalization voltage V by calculating from adjusting the voltage that plays each monocell C1 ~ CN when beginning
tarTill time, come calculated capacity to adjust the time.
In the situation that detect the abnormal of battery pack 100 by abnormal judging part 506, the abnormal of battery pack 100 reported by not shown emergency warning lamp etc. is lighted by not shown report section.Department of Communication Force 510 is that the result of abnormal judgement of the battery pack 100 that will obtain by 506 judgements of abnormal judging part is to the communicator of PERCOM peripheral communication.
Then, use Fig. 2 and Fig. 3 that control to the abnormal judgement of battery pack 100 is described in battery controller 500.Fig. 3 means the curve chart of adjustment time response in respect of time.
In order to be judged the abnormal of battery pack 100 by abnormal judging part 506, calculating part 508 uses the data relevant to the capacity adjustment of battery pack 100 that are stored in storage part 507, calculates the slope by the adjustment time of time series arrangement.In addition, these data of calculating part 508 use are calculated abnormal judging part 506 variable quantity of the adjustment time before and after between out-of-operation stand-down.
Refer between stand-down abnormal judging part 506 not to battery pack 100 extremely monitor during.For example, and be connected to the interlock that switches on and off of relay switch (not shown) between battery pack 100 and load 200, in the situation that abnormal judging part 506 monitors the abnormal of battery pack 100, be equivalent to the off period of this relay switch between stand-down.Perhaps, with the interlock that switches on and off of the main switch (not shown) of vehicle, in the situation that abnormal judging part 506 monitors the abnormal of battery pack 100, be equivalent to the off period of this main switch between stand-down.
Then, use the passing of Fig. 3 explanation by the adjustment time in the situation of time series arrangement.As shown in Figure 3, from time (0) of starting to time (t
1) till during and time (t
2) be between the on-stream period of abnormal judging part 506 runnings, from time (t during later
1) to time (t
2) till during be that abnormal judging part 506 is between out-of-operation stand-down.
During operation, battery pack 100 is to load 200 supply capabilities or be recharged by the Regeneration control that is included in the motor in load 200, so deviation can occur the voltage between monocell C1 ~ CN.And, when the voltage difference between monocell C1 ~ CN reaches the voltage difference threshold value, carry out the capacity adjustment by capacity adjustment part 504.
It is deteriorated and increase in time that voltage difference between monocell C1 ~ CN can be accompanied by battery pack 100, therefore is accompanied by the time process, and the adjustment time that capacity is adjusted is also elongated.Therefore, as shown in Figure 3, in the running between in, adjustment time and time are through elongated pro rata.In addition, corresponding to the slope S of the adjustment time of time between on-stream period
1(the adjustment time of each unit interval) is the variation ratio because of the deteriorated adjustment time of causing of battery pack 100.
In addition, at time (t
1) time finishes the duration of runs, the voltage between monocell C1 ~ CN does not occur in the situation of deviation, (t between stand-down
1~ t
2) in, as long as voltage does not have deviation, with regard to not carrying out the capacity adjustment, do not obtain the data of adjustment time.
At this, suppose between stand-down at the interior micro-short circuit that occured of battery pack 100.In this case, owing in the monocell that micro-short circuit has occured, voltage drop having occured, therefore, the voltage difference that the voltage of the monocell of micro-short circuit and other normal monocell has occured becomes large.The capacity deterioration of micro-short circuit and monocell C1 ~ CN, internal resistance deteriorated different, do not follow the time through and occur, in the situation that shortly between the operating period of monocell C1 ~ CN also might occur in short time.And, in the situation that micro-short circuit has occured, to compare with the deteriorated voltage drop that causes because of monocell C1 ~ CN, the voltage effect when micro-short circuit occurs is large.
Therefore, at time (t
2) time when again becoming between on-stream period, time (t
2) the adjustment time than time (t
1) the adjustment time long.And, at time (t
2) in later duration of runs, and to time (t
1) till the duration of runs similarly, deteriorated due to battery pack 100, adjustment time and time are elongated pro rata.Time (t
2) slope (S of adjustment time of later duration of runs
2) and time (t
1) before the slope (S of adjustment time of the duration of runs
1) identical.
In addition, different from this example, when the only slope by the adjustment time in relatively between on-stream period and threshold value detect battery pack 100 abnormal, as shown in Figure 3, in the situation that micro-short circuit has occured, the slope (S of front and back between stand-down between stand-down
1And S
2) be not very different, therefore, might omit the abnormal of the battery pack 100 that causes because of the micro-short circuit between stand-down.
Therefore, in the present example, abnormal judging part 506 is the variable quantity of the adjustment time according to the slope of the adjustment time before and after between stand-down, before and after between stand-down as follows, judges the abnormal of the battery pack 100 that causes because of the micro-short circuit in battery pack 100.
During abnormal judging part 506 rerunning after between stand-down, judge whether to have occured micro-short circuit.When detecting micro-short circuit, calculating part 508 calculates the slope (S of adjustment times after the rerunning of abnormal judging part 506
2), thus can be not mistakenly with extremely being judged as of causing because of battery pack 100 deteriorated because of micro-short circuit cause abnormal.And, the slope (S of the adjustment time before abnormal judging part 506 calculates between the stand-down that is calculated by calculating part 508
1) and stand-down between after the slope (S of adjustment time
2) between the poor (S of slope
2-S
1).
Can be also, at slope calculations (S
1And S
2) time, the adjustment time that calculating part 508 will be stored in storage part 507 arranges by the time sequence, and establishing the x axle is the time, and establishing the y axle is the adjustment time, carries out linear regression and calculates, and comes slope calculations approx according to regression straight line.Can be also perhaps, according to time t
1With time t
2A plurality of adjustment times that the Time Calculation that approaches obtains calculate.
In abnormal judging part 506, preset and consider that battery pack 100 deteriorated, the error of adjusting the time etc. and the expression that obtains in time adjust the scope of variable quantity of the slope of time, be i.e. permissible range (Sc ~ Sc).And, the poor (S of abnormal judging part 506 these slopes of judgement
2-S
1) whether be in permissible range.Poor (S at slope
2-S
1) be in the situation in permissible range, whether the variation that abnormal judging part 506 judges the adjustment time is because of battery pack 100 deteriorated causing in time.On the other hand, at the poor (S of slope
2-S
1) be in permissible range situation in addition, the abnormal grade that abnormal judging part 506 is judged as due to resistance 401 has occured extremely.
Poor (S at slope
2-S
1) be in the situation in permissible range, for the micro-short circuit in detecting between stand-down, the upper adjustment time that calculating part 508 calculates before being right after between stand-down, the adjustment time before being used as between stand-down (Fig. 3 with time t
1The corresponding adjustment time).In addition, calculating part 508 calculates and carries out at first after rerunning the adjustment time of capacity when adjusting, the adjustment time after being used as between stand-down (Fig. 3 with time t
2The corresponding adjustment time).And calculating part 508 is by obtaining poor between adjustment time after the off time and the adjustment time before the off time, the variable quantity (Δ A) (with reference to Fig. 3) of the adjustment time before and after calculating between stand-down.
In abnormal judging part 506, preset the threshold value that judgment threshold (Ac) is used as having represented to occur micro-short circuit.And abnormal judging part 506 compares variable quantity (Δ A) and judgment threshold (Ac).In the situation that variable quantity (Δ A) is larger than judgment threshold (Ac), abnormal judging part 506 is judged as: micro-short circuit has occured between stand-down, due to micro-short circuit battery pack 100 interior occured abnormal.On the other hand, in the situation that variable quantity (Δ A) is less than judgment threshold (Ac), it is normal that abnormal judging part 506 is judged as battery pack 100.
Then, use Fig. 4 that the control step of this routine battery controller 500 is described.Fig. 4 means the flow chart of the control step of battery controller 500.In addition, be normal if be judged as battery pack 100, repeatedly carry out controlled circulation shown in Figure 4.
In step S 1, voltage detection department 501 detects the terminal voltage of monocell C1 ~ CN with the cycle of regulation.In step S2, control part 505 is determined ceiling voltage and minimum voltage from the detection voltage of each monocell, obtain the poor of ceiling voltage and minimum voltage, thus calculating voltage poor (Δ V).
In step S3, control part 505 compares voltage difference (Δ V) and voltage difference threshold value.In the situation that voltage difference (Δ V) is judged as less than the voltage difference threshold value deviation that does not occur between monocell, turn back to step S 1.On the other hand, in the situation that voltage difference (Δ V) is the voltage difference threshold value is above, in step S4, control part 505 is adjusted instruction with capacity and is sent to capacity adjustment part 504, and capacity adjustment part 504 connects switch 402 according to this instruction, and the enforcement capacity is adjusted.
In step S5, capacity adjustment part 504 is according to the detection voltage of voltage detection department 501, judges whether the voltage of adjusting whole monocells of object as capacity is target equalization voltage V
tar, judge thus whether the capacity adjustment finishes.In the situation that the capacity adjustment do not finish, proceed the capacity adjustment by capacity adjustment part 504 and control.In the situation that the capacity adjustment finishes, transfer to step S 6.
In step S6, the adjustment time during the capacity adjustment of calculating part 508 calculation procedure S4 and step S 5 is controlled, and with its with adjust after the moment store into explicitly in storage part 507.In step S 7, control part 505 judges whether to carry out the abnormal judgement control of abnormal judging part 506.In this example, mainly carry out controlling for detection of the abnormal judgement of the micro-short circuit between stand-down, so control part 505 in the situation that carried out driving again, carries out the abnormal judgement of this example and controls for example after between stand-down.In addition, whether control part 505 can according to the signal from not shown main switch, detect and carry out driving again.And, control in the situation that do not carry out abnormal judgement, finish the control of this example.
Control in the situation that carry out judgement extremely, in step S71, calculating part 508 calculates the slope (S of the adjustment time of front and back between stand-down according to the data that are stored in storage part 507
1And S
2).In step S 72, calculating part 508 calculates the variable quantity (Δ A) of the adjustment time of front and back between stand-down according to the data that are stored in storage part 507.
In step S73, the poor (S of the slope of the adjustment time before and after abnormal judging part 506 judges between stand-down
2-S
1) whether permissible range (in Sc ~ Sc), namely should be poor whether greater than-Sc and less than Sc.Poor (S at slope
2-S
1) (in Sc ~ Sc), in step S74, abnormal judging part 506 judges that whether variable quantity (Δ A) is greater than judgment threshold (Ac) in the situation that permissible range.
In the situation that variable quantity (Δ A) is greater than judgment threshold (Ac), in step S75, abnormal judging part 506 is judged as: because the micro-short circuit in battery pack 100 cause battery pack 100 to occur extremely.Control part 505 is according to the abnormal judgement of the micro-short circuit that is obtained by abnormal judging part 506, come control report section and Department of Communication Force 510, the abnormal meaning has occured because of micro-short circuit in report section report expression, and Department of Communication Force 510 will represent to send to the outside because the abnormal meaning has occured micro-short circuit.
Turn back to step S73, at the poor (S of slope
2-S
1) (Sc ~ Sc) outer, in step S76, abnormal judging part 506 is judged as: former thereby occured abnormal due to other outside the micro-short circuit between stand-down in the situation that permissible range.
Turn back to step S74, in the situation that variable quantity (Δ A) is below judgment threshold (Ac), it is not abnormal that abnormal judging part 506 is judged as battery pack 100, finishes the control of this example.
As mentioned above, in the present invention, the slope of adjustment time before between the stand-down of the abnormal judging part 506 that the control device of battery pack 100 comprises and between stand-down after the difference of slope of adjustment time in permissible range, and the variable quantity of the adjustment time before and after between stand-down is than in the large situation of the judgment threshold of expression micro-short circuit, and abnormal judging part 506 is judged as because the abnormal of battery pack 100 occured the micro-short circuit in battery pack 100.Thus, this example is by the situation of the variation size of the slope of the adjustment time before and after confirming between stand-down, and confirmed not to be subject to the impact that causes such as to disturb because of the sharply deteriorated, subjective of battery pack 100, and then judge the abnormal of micro-short circuit according to the variable quantity of the adjustment time before and after between stand-down, therefore can detect accurately the abnormal of the battery pack 100 that causes because of micro-short circuit.In addition, this example can detect the abnormal of the battery pack 100 that causes because of the micro-short circuit between stand-down accurately.
In addition, in this example, report section report battery pack 100 abnormal.Thus, the user can confirm the abnormal of battery pack 100.In addition, in the situation that the abnormal of battery pack 100 occured, report section via Department of Communication Force 510 to the outsides such as center reports because of the micro-short circuit of battery pack 100 cause abnormal, can cause thus the battery identical with battery pack 100 in the attention of the possibility of abnormal from now on.
In addition, in this example, the adjustment time that calculating part 508 calculated capacities are adjusted, abnormal judging part 506 is according to the adjustment time, detects the abnormal of the battery pack 100 that causes because of micro-short circuit.But can be also, the adjustment number of times of each unit interval that calculating part 508 calculated capacities are adjusted, abnormal judging part 506 be according to the adjustment number of times of each unit interval, detects the abnormal of the battery pack 100 that causes because of micro-short circuit.
Voltage difference between monocell C 1 ~ CN can be accompanied by the deteriorated and increase in time of battery pack 100, therefore is accompanied by the time process, and the adjustment number of times of each unit interval of capacity adjustment also increases.And, when arrange the data of the adjustment number of times of each unit interval according to the time series of carrying out the capacity adjustment, the x axle is made as the time, when the y axle is made as the adjustment number of times of each unit interval, with Fig. 3 in the same manner, can access the curve chart that the adjustment number of times of each unit interval and time increases pro rata.
In addition, in the situation that micro-short circuit has occured, in the monocell that micro-short circuit has occured, voltage drop occurs, the voltage difference between monocell C1 ~ CN further increases, and the adjustment number of times of each unit interval after micro-short circuit further increases.And in the situation that micro-short circuit has occured between stand-down, the passing of the adjustment number of times of each unit interval in respect of time presents the characteristic identical with Fig. 3.
Therefore, replace with the adjustment number of times of each unit interval by the adjustment time during the abnormal judgement of passing through the battery pack 100 that battery controller 500 carries out of above-mentioned explanation is controlled, the battery pack 100 of utilizing the adjustment number of times of each unit interval also can detect to cause because of micro-short circuit abnormal.
In addition, in this example, control part 505 is in the situation that use the deviation of the SOC judgement capacity of monocell C1 ~ CN, detected temperatures that also can serviceability temperature transducer 102.Between the detection voltage of the SOC of monocell and monocell, have certain correlation, but this correlation has temperature dependency.And, based on the characteristic of battery, pre-determine voltage-SOC curve and how to change corresponding to battery temperature.Therefore, control part 505 calculates corresponding SOC with reference to this curve, by proofreading and correct to calculate SOC based on temperature sensor 102 according to the detected temperatures of monocell.
In addition, in this example, the resistance value of resistance 401 is made as fixed value, but also resistance 401 can be made as variable resistor.In addition, resistance 401 is being made as in variable-resistance situation, calculating part 508 uses the adjustment capacity (charge/discharge capacity) of the battery before the deviation of adjusting monocell C1 ~ CN, replaces the adjustment number of times of adjustment time and each unit interval.The capacity of the battery after the capacity of the battery before in addition, the adjustment capacity is equivalent to capacity and adjusts and capacity adjustment poor.
Carried out capacity by capacity adjustment part 504 when adjusting, control part 505 is set the resistance value of resistance 401.In addition, control part 505 carries out integration by the detection electric current to current sensor 300 in the capacity adjustment, calculates the integrated value of the charging and discharging currents in adjustment.And control part 505 can and be set the resistance value that obtains and calculate the adjustment capacity according to this integrated value.
And, being accompanied by battery pack 100 deteriorated in time, it is large that the voltage difference between monocell C1 ~ CN becomes, and therefore, it is large that the adjustment capacity also becomes.In addition, in the situation that micro-short circuit has occured, in the monocell that micro-short circuit has occured, voltage drop occurs, the voltage difference between monocell C1 ~ CN further increases, and the adjustment capacity after micro-short circuit further increases.Between the on-stream period identical with Fig. 3 and between stand-down, in the situation that micro-short circuit has occured between stand-down, adjust number of times passing in respect of time and present the characteristic identical with Fig. 3.
Therefore, replace with the adjustment capacity by the adjustment time during the abnormal judgement of passing through the battery pack 100 that battery controller 500 carries out of above-mentioned explanation is controlled, the battery pack 100 of utilizing the adjustment capacity also can detect to cause because of micro-short circuit abnormal.
In addition, can be also in this example, abnormal judging part 506 be the variable quantity of the adjustment time before and after the off time variable quantity as each unit interval, judges the abnormal of the battery pack 100 that causes because of micro-short circuit.By with variable quantity (Δ A) divided by the time between stand-down, calculate the variable quantity of each unit interval.In addition, also judgment threshold (Ac) can be made as the threshold value corresponding with the variable quantity of each unit interval.Thus, the variable quantity of the adjustment time of each unit interval during this example can detect between stand-down detects the abnormal of the battery pack 100 that causes because of micro-short circuit accurately.
Above-mentioned voltage detection department 501 is equivalent to " voltage detection unit " of the present invention, capacity adjustment part 504 is equivalent to " capacity adjustment part " of the present invention, storage part 507 is equivalent to " memory cell ", calculating part 508 is equivalent to " computing unit ", abnormal judging part 506 is equivalent to " judging unit ", report section is equivalent to " reporting unit ", and Department of Communication Force 510 is equivalent to " communication unit ".
The second execution mode
Fig. 5 means the curve chart of adjustment time response in respect of time in other the control device of battery pack of execution mode of the present invention.In this example, for the first above-mentioned execution mode, the part of the control of the abnormal judgement of battery pack 100 is different.Structure in addition is identical with the first above-mentioned execution mode, therefore suitably quotes its record.
Abnormal judging part 506 is set judgment threshold (Ac) based on the length between stand-down, judgment threshold (Ac) is set as between stand-down longer judgment threshold (Ac) larger.
As shown in Figure 5, be Δ t between stand-down
1Situation under, the variable quantity of the adjustment time before and after between stand-down is Δ A
1, but be Δ t between stand-down
2(〉 Δ t
1) situation under, the variable quantity of the adjustment time before and after between stand-down is Δ A
2, variable quantity (Δ A
2) become than variable quantity (Δ A
1) long.That is, in the situation that long between stand-down, the drop-out voltage that causes because of micro-short circuit increases, and the adjustment time when therefore rerunning is elongated.Therefore, this example is set judgment threshold (Ac) based on the length between stand-down.
Becoming between stand-down in long-standing situation, even in the situation that micro-short circuit does not occur between stand-down, because battery pack 100 is deteriorated, the voltage difference between monocell C1 ~ CN also increases.Therefore, during rerunning after between long-standing stand-down, the adjustment time is elongated, and the variable quantity (Δ A) before and after between stand-down increases.And, judgment threshold (Ac) is being made as fixed value, variable quantity (Δ A) before and after between long-term stand-down is than in the large situation of judgment threshold (Ac), and abnormal judging part 506 might be judged as the variation because of the long-standing deteriorated adjustment time of causing the abnormal of the battery pack 100 that causes because of micro-short circuit mistakenly.
On the other hand, in this example, during rerunning after between long-standing stand-down, judgment threshold (Ac) is set as large value, therefore the variable quantity (Δ A) before and after between long-standing stand-down can be larger than judgment threshold (Ac), and abnormal judging part 506 can not be judged as the variation because of the long-standing deteriorated adjustment time of causing the abnormal of the battery pack 100 that causes because of micro-short circuit mistakenly.
Then, use Fig. 6 that the control step of battery controller is described.Fig. 6 means the flow chart of the control step of battery controller 500.In addition, be normal if be judged as battery pack 100, repeatedly carry out controlled circulation shown in Figure 6.The Control the content of the step S1 of Fig. 6 ~ step S7 is identical with the Control the content of the step S1 of Fig. 4 ~ step S7, and therefore description thereof is omitted.In addition, the Control the content of the step S81 of Fig. 6, step S82, step S84 ~ step S87 is identical respectively with the Control the content of the step S71 of Fig. 4 ~ step S76, and therefore description thereof is omitted.
After step S82, in step S83, abnormal judging part 506 is set judgment threshold (Ac) based on the length between stand-down, transfers to step S84.
As mentioned above, in this example, abnormal judging part 506 is set judgment threshold based on the length between stand-down.Thus, can detect accurately the abnormal of the battery pack 100 that causes because of micro-short circuit.
In addition, can be also in this example, abnormal judging part 506 is set judgment threshold (Ac) based on the length between the operating period of battery pack 100, judgment threshold (Ac) is set as between operating period of battery pack 100 longer judgment threshold (Ac) larger.In the situation that long between the operating period of battery pack 100, the degradation of battery pack 100 is high, and it is large that the deviation of the voltage difference between monocell C1 ~ CN also becomes.
Fig. 7 means the curve chart of adjustment time response in respect of time in the control device of the battery pack that variation of the present invention is related.Curve a represents the characteristic in situation short between the operating period of battery pack 100, and curve b represents the characteristic in situation long between the operating period of battery pack 100.As shown in Figure 7, even in the situation that identical between stand-down, between the operating period, the degradation of long battery pack 100 also uprises, therefore, and variable quantity (the Δ A of long battery pack 100 between the operating period
2) than variable quantity (the Δ A of battery pack short between the operating period 100
1) become large.Therefore, this example is by setting judgment threshold (Ac), can detect accurately the abnormal of the battery pack 100 that causes because of micro-short circuit based on the length between the operating period of battery pack 100.
In addition, in this example, abnormal judging part 506 also can be with setting judgment threshold by Department of Communication Force 510 information relevant to other battery pack 100 that receive.For example, in other vehicle, the data relevant to battery pack 100 have been obtained, and be stored in the database at the center that this other vehicle is managed, and will also be stored in the center as past data in the situation that the variable quantity of the adjustment time of micro-short circuit has occured in the battery pack 100 of other vehicle.When using battery pack 100 in this vehicle, control part 505 receives the information relevant to the variable quantity of adjustment time in the situation that micro-short circuit has occured via Department of Communication Force 510.And abnormal judging part 506 is set judgment threshold (Ac) according to this information that receives by Department of Communication Force 510.
Thus, this example can not only be used the data of the battery pack 100 of this vehicle, also sets judgment threshold with the data of the battery pack 100 of other vehicle, therefore can detect accurately the abnormal of the battery pack 100 that causes because of micro-short circuit.
Claims (7)
1. the control device of a battery pack, it is used for the battery pack that comprises a plurality of monocells is controlled, and the control device of this battery pack is characterised in that to possess:
Adjustment unit, the desired value that it is adjusted into regulation with voltage or the charged state of above-mentioned a plurality of monocells;
Computing unit, its calculating utilize above-mentioned adjustment unit that the voltage of above-mentioned a plurality of monocells or charged state are adjusted into the adjustment time of actual needs till above-mentioned desired value or utilize the adjustment number of times of actual each unit interval of adjusting of above-mentioned adjustment unit or utilize the actual adjustment capacity of adjusting of above-mentioned adjustment unit;
Memory cell, the calculated value that its storage is calculated by above-mentioned computing unit; And
Judging unit, its utilization are stored in the above-mentioned calculated value in said memory cells, according to the slope of the above-mentioned calculated value of arranging according to time series and the variable quantity of measured value, judge due to the micro-short circuit in above-mentioned battery pack cause abnormal,
Wherein, in the situation that the above-mentioned slope before between the stand-down of above-mentioned control device and between above-mentioned stand-down after the difference of the above-mentioned slope above-mentioned variable quantity before and after within the limits prescribed and between above-mentioned stand-down larger than the threshold value of expression micro-short circuit, the abnormal of above-mentioned battery pack for having occured in above-mentioned judgment unit judges due to the micro-short circuit in above-mentioned battery pack.
2. the control device of battery pack according to claim 1, is characterized in that,
Above-mentioned judging unit is set above-mentioned threshold value according to the length between above-mentioned stand-down.
3. the control device of battery pack according to claim 1, is characterized in that,
Above-mentioned judging unit is set above-mentioned threshold value between the operating period according to above-mentioned battery pack.
4. the control device of battery pack according to claim 1, is characterized in that,
Above-mentioned judging unit is set above-mentioned threshold value between the operating period according to the length between above-mentioned stand-down and above-mentioned battery pack.
5. the control device of the described battery pack of any one according to claim 1 ~ 4, is characterized in that,
Also possess voltage detection unit, this voltage detection unit detects the magnitude of voltage of above-mentioned a plurality of monocells,
Above-mentioned adjustment unit has resistance and the switch of the capacity adjustment use that is connected with above-mentioned monocell,
Above-mentioned adjustment unit is adjusted the capacity of above-mentioned monocell according to the above-mentioned switch connection of voltage official post of the above-mentioned magnitude of voltage between above-mentioned a plurality of monocells.
6. the control device of the described battery pack of any one according to claim 1 ~ 4, is characterized in that,
Also possess the Department of Communication Force that communicates with the outside,
Above-mentioned judging unit utilization is set above-mentioned threshold value by the information about above-mentioned battery pack that above-mentioned Department of Communication Force receives.
7. the control device of the described battery pack of any one according to claim 1 ~ 4, is characterized in that,
Also possesses the reporting unit of extremely reporting with above-mentioned battery pack.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2011264345A JP5879983B2 (en) | 2011-12-02 | 2011-12-02 | Battery control device |
| JP2011-264345 | 2011-12-02 |
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| CN103138017B CN103138017B (en) | 2015-04-15 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870301A (en) * | 2016-09-27 | 2018-04-03 | 华为技术有限公司 | A kind of detection method and device of battery micro-short circuit |
| CN108387850A (en) * | 2018-05-04 | 2018-08-10 | 金卡智能集团股份有限公司 | A kind of battery detection statistical system and its method based on Internet of Things |
| CN110609188A (en) * | 2019-09-25 | 2019-12-24 | 潍柴动力股份有限公司 | Method, device and equipment for detecting aging of oil quantity metering unit |
| CN111492555A (en) * | 2017-12-22 | 2020-08-04 | 三洋电机株式会社 | Management device and power supply system |
| CN111999656A (en) * | 2020-08-28 | 2020-11-27 | 广州小鹏汽车科技有限公司 | Method and device for detecting short circuit in vehicle battery and electronic equipment |
| CN113219337A (en) * | 2020-02-06 | 2021-08-06 | 丰田自动车株式会社 | Battery deterioration determination system, method, and non-transitory storage medium storing program |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6167775B2 (en) * | 2013-09-06 | 2017-07-26 | 日産自動車株式会社 | Secondary battery control device and control method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835330A (en) * | 2005-03-17 | 2006-09-20 | 丰田自动车株式会社 | Accumulating system and method for processing abnormality of accumulating system |
| JP2008134060A (en) * | 2006-11-27 | 2008-06-12 | Matsushita Electric Ind Co Ltd | Abnormality detection device of electric storage device, abnormality detection method of electric storage device, and abnormality detection program |
| WO2011036705A1 (en) * | 2009-09-24 | 2011-03-31 | トヨタ自動車株式会社 | Process for producing secondary battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002354692A (en) * | 2001-05-30 | 2002-12-06 | Toyota Motor Corp | Control device for secondary battery for use in vehicle |
| JP5262491B2 (en) * | 2008-09-17 | 2013-08-14 | 新神戸電機株式会社 | In-vehicle lead-acid battery charge state determination device |
-
2011
- 2011-12-02 JP JP2011264345A patent/JP5879983B2/en active Active
-
2012
- 2012-11-30 CN CN201210507820.0A patent/CN103138017B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835330A (en) * | 2005-03-17 | 2006-09-20 | 丰田自动车株式会社 | Accumulating system and method for processing abnormality of accumulating system |
| JP2008134060A (en) * | 2006-11-27 | 2008-06-12 | Matsushita Electric Ind Co Ltd | Abnormality detection device of electric storage device, abnormality detection method of electric storage device, and abnormality detection program |
| WO2011036705A1 (en) * | 2009-09-24 | 2011-03-31 | トヨタ自動車株式会社 | Process for producing secondary battery |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870301A (en) * | 2016-09-27 | 2018-04-03 | 华为技术有限公司 | A kind of detection method and device of battery micro-short circuit |
| WO2018059074A1 (en) * | 2016-09-27 | 2018-04-05 | 华为技术有限公司 | Detection method and device for micro short circuit of battery |
| US11215679B2 (en) | 2016-09-27 | 2022-01-04 | Huawei Technologies Co., Ltd. | Method and apparatus for detecting micro short circuit of battery |
| CN111492555A (en) * | 2017-12-22 | 2020-08-04 | 三洋电机株式会社 | Management device and power supply system |
| CN111492555B (en) * | 2017-12-22 | 2023-09-15 | 三洋电机株式会社 | Management device and power supply system |
| US20210404146A1 (en) * | 2018-03-15 | 2021-12-30 | Hitachi Construction Machinery Co., Ltd. | Construction Machine |
| CN108387850A (en) * | 2018-05-04 | 2018-08-10 | 金卡智能集团股份有限公司 | A kind of battery detection statistical system and its method based on Internet of Things |
| CN110609188A (en) * | 2019-09-25 | 2019-12-24 | 潍柴动力股份有限公司 | Method, device and equipment for detecting aging of oil quantity metering unit |
| CN113219337A (en) * | 2020-02-06 | 2021-08-06 | 丰田自动车株式会社 | Battery deterioration determination system, method, and non-transitory storage medium storing program |
| CN113219337B (en) * | 2020-02-06 | 2024-02-20 | 丰田自动车株式会社 | Battery degradation determination system, method, and non-transitory storage medium storing program |
| CN111999656A (en) * | 2020-08-28 | 2020-11-27 | 广州小鹏汽车科技有限公司 | Method and device for detecting short circuit in vehicle battery and electronic equipment |
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| JP2013117410A (en) | 2013-06-13 |
| JP5879983B2 (en) | 2016-03-08 |
| CN103138017B (en) | 2015-04-15 |
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