CN108051748A

CN108051748A - Abort situation detection method, device, accumulator cell assembly and motor vehicle

Info

Publication number: CN108051748A
Application number: CN201711140639.XA
Authority: CN
Inventors: 窦国伟; 王英
Original assignee: Music Eco Automobile (zhejiang) Co Ltd
Current assignee: Music Eco Automobile (zhejiang) Co Ltd
Priority date: 2016-10-20
Filing date: 2016-10-20
Publication date: 2018-05-18
Also published as: CN106501711A; CN106501711B

Abstract

The embodiment of the present invention provides a kind of abort situation detection method, device, accumulator cell assembly and motor vehicle, in said program, after detecting that power-off failure failure occurs for switch control module under the instruction of lower forceful electric power, start setting to load and continue the first preset time, the terminal voltage changing value of the setting load and the terminal voltage changing value of each battery strings are obtained in the first preset time, if the terminal voltage changing value of a certain battery strings and the terminal voltage changing value of the setting load have uniformity, it is determined that the corresponding contact-making switch failure of the battery strings.I.e. in the case where not increasing any sensor additionally, it can accurately and rapidly determine the location of faults such as sintering or adhesion using existing detection part in motor vehicle power system, significantly reduce maintenance time and cost.

Description

Abort situation detection method, device, accumulator cell assembly and motor vehicle

Technical field

The present invention relates to battery technology field, in particular to a kind of abort situation detection method, a kind of fault bit Put detection device, a kind of accumulator cell assembly and a kind of motor vehicle.

Background technology

It is the power system architecture schematic diagram of electric motor vehicle as shown in Figure 1, accumulator body 100 includes an at least battery String 1001 and switch control module 1002.In figure by taking three battery strings 1001 as an example, each battery strings 1001 have independent connect Switch 1003 is touched, three groups of contact-making switches 1003 together constitute switch control module 1002.When three groups of contact-making switches 1003 close During conjunction, each battery strings 1001 provide power by bus circuit to driving motor 104,105 grade of hardware load (high pressure attachment). VMS101 (Vehicle Management System, vehicle management system) breaks to accumulator body 100 by BMS102 When electrically operated, the contact-making switch 1003 in each battery strings 1001 disconnects successively under the lower forceful electric power instruction of BMS102, and three groups connect Touch all off rear i.e. completion power operation of switch 1003.Contact-making switch 1003 in wherein any one battery strings 1001 glues Or sintering can all make to correspond to battery strings 1001 and can not effectively disconnect to cause power-off failure event.And BMS102 feedbacks are complete at this time It is operated into lower forceful electric power, then can generate many technological deficiencies.Such as：

(1) driver or maintenance personal can not know power-off identification, and there are Danger Electric shock risks.

(2) hardware load continues to work under high voltage bus, service life reduction.

(3) power accumulator continued power, service life reduction.

For this purpose, some realize the inspection of power-off failure by way of increasing sensor newly and adjusting BMS algorithms in the prior art It surveys.But can not be detected for power-off failure guilty culprit specific location, cause the increase of maintenance time and cost.

The content of the invention

Present invention seek to address that at least one of technical problem present in the prior art or correlation technique.

The embodiment of the first aspect of the present invention proposes a kind of abort situation detection method, includes the following steps：

After sending lower forceful electric power instruction, whether detection switch control module occurs power-off failure failure；

If power-off failure failure occurs for the switch control module, send and start the control instruction that setting loads, and The control instruction for closing the setting load is sent after first preset time；

In first preset time, the terminal voltage changing value of the setting load and the end electricity of each battery strings are obtained Press changing value；

If the difference of the terminal voltage changing value of a certain battery strings and the terminal voltage changing value of the setting load is in threshold range It is interior, it is determined that the corresponding contact-making switch failure of the battery strings；

Wherein, the lower forceful electric power instructs that each contact-making switch in the switch control module is controlled to disconnect.

The embodiment of the second aspect of the present invention, it is also proposed that a kind of abort situation detection device, including：

Fault determination module, after sending lower forceful electric power instruction, whether detection switch control module occurs power-off failure failure；；

Load control module if power-off failure failure occurs for the switch control module, sends and starts setting load Control instruction, and the control instruction for closing the setting load is sent after the first preset time；

Data acquisition module in first preset time, obtains the terminal voltage changing value of the setting load and every The terminal voltage changing value of one battery strings；

Fault location module, if the terminal voltage changing value of a certain battery strings with it is described setting load terminal voltage changing value it Difference is in threshold range, it is determined that the corresponding contact-making switch failure of the battery strings；

The embodiment of the third aspect of the present invention, it is also proposed that a kind of accumulator cell assembly, including：

Hardware load；

Accumulator body is connected by bus circuit with the hardware load, including multiple battery strings, each battery strings Contact-making switch is in series between the bus circuit, all contact-making switches form switch control module；

Battery management module is connected to the accumulator body, for controlling each institute in the switch control module Contact-making switch is stated to be closed or disconnect；

Main control module is connected to the battery management module and hardware load, under being obtained by the battery management module Forceful electric power completes instruction, is additionally operable to：

Under transmission after forceful electric power instruction, whether detection switch control module occurs power-off failure failure；

The embodiment of the fourth aspect of the present invention, it is also proposed that a kind of motor vehicle is filled including fault detect as described above It puts；Or accumulator cell assembly as described above.

Above technical scheme described in the embodiment of the present invention detects that switch control module occurs to break under the instruction of lower forceful electric power After electric failure of removal, start setting and load and continue the first preset time, the setting load is obtained in the first preset time Terminal voltage changing value and each battery strings terminal voltage changing value, if the terminal voltage changing value of a certain battery strings and the setting The terminal voltage changing value of load has uniformity, it is determined that the corresponding contact-making switch failure of the battery strings.Do not increasing additionally In the case of any sensor, sintering can be accurately and rapidly determined using existing detection part in motor vehicle power system Or the location of faults such as adhesion, significantly reduce maintenance time and cost.

Description of the drawings

Fig. 1 is motor vehicle power system architecture schematic diagram；

Fig. 2 is the flow chart of abort situation detection method described in one embodiment of the invention；

Fig. 3 is battery strings one end voltage change and busbar electricity described in one embodiment of the invention during one failure of battery strings The relation schematic diagram of wire-end voltage changing value；

Fig. 4 is the flow chart of abort situation detection method described in a specific example of the invention；

Fig. 5 is the original sampled described in one embodiment of the invention to bus circuit first voltage-Annual distribution information Manage schematic diagram；

Fig. 6 is the flow chart of abort situation detection method described in another embodiment of the present invention；

Fig. 7 for detection switch control module described in one embodiment of the invention whether the method flow diagram of failure；

Fig. 8 be detection switch control module described in a specific example of the invention whether the method flow diagram of failure；

Fig. 9 is the schematic flow diagram for the terminal voltage changing value that bus circuit is obtained described in a specific example of the invention；

Figure 10 is the functional block diagram of abort situation detection device described in one embodiment of the invention；

Figure 11 is the functional block diagram of fault determination module described in one embodiment of the invention；

Figure 12 is the structure diagram of accumulator cell assembly described in one embodiment of the invention；

Figure 13 is the schematic block diagram of motor vehicle described in one embodiment of the invention；

Figure 14 is the structure diagram for the electronic equipment that abort situation detection method is performed described in one embodiment of the invention.

Specific embodiment

It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real Mode is applied the present invention is further described in detail.It should be noted that in the case where there is no conflict, the implementation of the application Feature in example and embodiment can be mutually combined.

Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also To be implemented using other different from other modes described here, therefore, protection scope of the present invention and from described below Specific embodiment limitation.

Embodiment 1

Abort situation detection method described in the present embodiment, applied in vehicle management system, as shown in Fig. 2, including such as Lower step：

S201：After sending lower forceful electric power instruction, whether detection switch control module occurs power-off failure failure, the lower forceful electric power It instructs that each contact-making switch in the switch control module is controlled to disconnect.

S202：If power-off failure failure occurs for the switch control module, the control instruction for starting setting load is sent, And the control instruction for closing the setting load is sent after the first preset time.Wherein, the setting load is hardware load One or more of, such as high-pressure hydraulic pump, high-pressure fan；First preset time can be true according to the configuration of dynamical system It is fixed, it is as far as possible short on the basis of it can be ensured that fault location in principle.

S203：In first preset time, the terminal voltage changing value of the setting load and each battery strings are obtained Terminal voltage changing value.As shown in Figure 1, hardware load 105 is connected to bus circuit, therefore obtain the terminal voltage of setting load Changing value can be realized by obtaining the terminal voltage changing value of bus circuit.And the terminal voltage for obtaining bus circuit can pass through The acquiring unit with voltage acquisition that is connected with bus circuit carries out, i.e. VMS receives what acquiring unit obtained in real time The terminal voltage of bus circuit, and the terminal voltage changing value for setting load is calculated according to the terminal voltage of bus circuit；VMS Receive the terminal voltage value for the branch line circuit being serially connected between any battery string and bus circuit that acquiring unit obtains in real time, and root The terminal voltage changing value of the battery strings is calculated according to the terminal voltage value of the branch line circuit.And acquiring unit can be used and busbar electricity BMS102, MC103, hardware load 105 of road connection etc..In addition, in dynamical system, in the contact-making switch 1003 of battery strings, Have been provided with to carry out the sensor of voltage detecting in hardware load 105, VMS101 can obtain the detection of respective sensor As a result to obtain required terminal voltage changing value, for example, VMS101 and respective sensor wirelessly realize data sending with It receives, to obtain the terminal voltage value of the terminal voltage value of battery strings and/or setting load.

S204：If the difference of the terminal voltage changing value of a certain battery strings and the terminal voltage changing value of the setting load is in threshold value In the range of, it is determined that the corresponding contact-making switch failure of the battery strings, the threshold range can be set according to vehicle actual disposition It is fixed.

By taking the scheme that accumulator body shown in Fig. 1 includes three battery strings as an example, detect that switch control module powers off Failure of removal then illustrates that the corresponding contact-making switch of an at least battery strings does not disconnect normally, opens the setting load at this time simultaneously Continue the first preset time, the setting load can never normally open battery strings obtain electric energy, therefore set load Terminal voltage changing value should be consistent with providing the terminal voltage changing value of the battery strings of electric energy for it, i.e., difference is in threshold range It is interior.Such as the only normal disconnection of battery strings one, during starting setting load under the instruction of lower forceful electric power, set the electricity of load Can be all from battery strings one, therefore the terminal voltage changing value of battery strings one and setting load are the terminal voltage change of bus circuit Change value should be consistent, as shown in Figure 3, it is contemplated that the electric energy loss that all parts and conducting wire are brought in circuit, in battery strings Think one failure of battery strings when the difference of one terminal voltage changing value and the terminal voltage changing value of bus circuit is in threshold range, Its corresponding contact-making switch sintering or adhesion.

In addition, if when thering are two groups or more of battery strings not disconnect normally, for example, battery strings one and battery strings two are not just Normal off is opened, and during starting setting load under the instruction of lower forceful electric power, the electric energy for setting load comes from battery strings one and battery String two, therefore the sum of terminal voltage changing value of battery strings one and battery strings two changes with the setting load i.e. terminal voltage of bus circuit The difference of value is in threshold range, you can thinks two failure of battery strings one and battery strings, corresponding contact-making switch sintering or adhesion.

It, can be not after detecting that power-off failure failure occurs for switch control module using the said program of the present embodiment It, can be accurate using existing BMS, MCU, hardware load etc. in motor vehicle power system in the case of additionally increasing any sensor Really, the location of faults such as sintering or adhesion are quickly determined, significantly reduce maintenance time and cost.

Embodiment 2

In Fig. 4 by taking a battery strings break down as an example, a kind of schematic flow diagram of abort situation detection method is provided, is had Body includes：

S401：After sending lower forceful electric power instruction, whether detection switch control module occurs power-off failure failure；Event is carried out afterwards Barrier positioning, enters step S402.

S402：In the initial time T1 of the first preset time, the first battery strings initial voltage Bat1_Vol (T1), the are obtained Two battery strings initial voltage Bat2_Vol (T1), the 3rd battery strings initial voltage Bat3_Vol (T1) and bus circuit are initially electric Bus_Vol (T1) is pressed, the voltage value for the branch line circuit connected with each battery strings can be obtained by BMS to obtain in this step State data.

S403：In duration t1=0, VMS sends the control instruction for starting setting load, to start setting load.

S404：Judge whether the duration t1 is greater than or equal to the first preset time T h1, if then entering step Otherwise S405 repeats this step.The current time and initial time T1 that the duration can provide according to system clock obtain It arrives.

S405：In the end time T2 of first preset time, the terminal voltage changing value △ Bat1_ of acquisition battery strings one Vol (T2)=Bat1_Vol (T1)-Bat1_Vol (T2), battery strings two terminal voltage changing value △ Bat2_Vol (T2)= Bat2_Vol (T1)-Bat2_Vol (T2), battery strings three terminal voltage changing value △ Bat3_Vol (T2)=Bat3_Vol (T1)- Terminal voltage changing value △ Bus_Vol (T2)=Bus_Vol (T1)-Bus_Vol (T2) of Bat3_Vol (T2), bus circuit, Middle T2-T1=Th1, VMS directly acquire Bat1_Vol (T2), Bat2_Vol (T2), Bat3_Vol (T2) and Bus_ by BMS Vol (T2) carries out simple subtraction computing and can obtain above-mentioned data afterwards.

S406：VMS sends the control instruction for closing setting load, is loaded with closing the setting.

S407：Result of calculation in step S405 can be sentenced compared with being done simply with the voltage threshold Trd_Vol to prestore Whether the difference between the terminal voltage changing value of disconnected battery strings one and the terminal voltage changing value of bus circuit is less than voltage threshold Trd_Vol；If then illustrate the difference of the terminal voltage changing value of battery strings one and the terminal voltage changing value of bus circuit in threshold value model S408 is then entered step in enclosing；Otherwise S409 is entered step；.

S408：One failure of battery strings, contact-making switch sintering identifier put 1.

S409：One fault-free of battery strings, contact-making switch sintering identifier are set to 0.

S410：Judge whether is difference between the terminal voltage changing value of battery strings two and the terminal voltage changing value of bus circuit Less than voltage threshold Trd_Vol (i.e. in threshold range)；If then illustrate the terminal voltage changing value of battery strings two and busbar electricity The difference of the terminal voltage changing value on road then enters step S411 in threshold range；Otherwise S412 is entered step.

S411：Two failure of battery strings, contact-making switch sintering identifier put 1.

S412：Two fault-free of battery strings, contact-making switch sintering identifier are set to 0.

S413：Three failure of battery strings, contact-making switch sintering identifier puts 1, i.e., when battery strings one and battery strings two are not sent out During raw failure, then it can confirm that battery strings three break down.

For in said program, voltage threshold Trd_Vol can be set according to the configuration of dynamical system, when setting, considers The energy loss that each circuit generates in dynamical system, is obtained by the mode of demarcating.

In addition, if when having two groups or more of battery strings failure, △ Bat1_Vol (T2), △ Bat2_Vol are being obtained (T2), after △ Bat3_Vol (T2), △ Bus_Vol (T2), the terminal voltage changing value and bus circuit of possible each battery strings Terminal voltage changing value difference not in threshold range, can determine whether at this time, if certain group battery strings terminal voltage become The sum of change value and the difference of the terminal voltage changing value of the setting load are in threshold range, if then determining every in this group of battery strings The corresponding contact-making switch of one battery strings breaks down.If for example, during starting setting load under the instruction of lower forceful electric power, examine It measures：

∣[△Bat1_Vol(T2)+△Bat2_Vol(T2)]-△Bus_Vol(T2)∣<Trd_Vol, also, △ Bat3_ Vol (T2) is almost nil, i.e. the sum of terminal voltage changing value of battery strings one and battery strings two and the terminal voltage of bus circuit changes It is worth consistent, and the terminal voltage of battery strings three does not almost change, then can determine that battery strings one and battery strings two are not normal It disconnects, the electric energy for setting load comes from battery strings one and battery strings two, two corresponding contact-making switch of battery strings one and battery strings Occur being sintered or the failure of adhesion.

In the said program of the present embodiment, the acquisition of data can be realized using the function of original component in dynamical system, And only need to carry out simple subtraction, abort situation detection can be realized in comparison operation, reduce time needed for repair and Cost.

Embodiment 3

The end electricity of another terminal voltage changing value and each battery strings for obtaining the setting load is provided in the present embodiment The scheme of changing value is pressed, specifically includes following steps：

S1031：Obtain first voltage-Annual distribution information of the bus circuit and the second electricity of the branch line circuit Pressure-Annual distribution information；

S1032：First effective voltage is determined according to the first preset sample frequency and the first voltage-Annual distribution information The initial voltage of value and the bus circuit in the first preset time initial time；According to the described first default sampling frequency Rate and the second voltage-Annual distribution information determine the second effective voltage value and in the first preset time initial times The initial voltage of the branch line circuit；

S1033：First sampling instant is determined according to first preset sample frequency, in any first sampling It carves：Calculate the first voltage difference between first effective voltage value and the initial voltage of the bus circuit；Described in calculating Second voltage difference between the initial voltage of second effective voltage value and the branch line circuit；

S1034：To the corresponding first voltage difference of all first sampling instants in first preset time into Row weighted sum obtains the terminal voltage changing value of the setting load；All described first in first preset time are adopted Sample moment corresponding second voltage difference is weighted summation and obtains becoming with the terminal voltage of the battery strings of the branch line circuit connected in series Change value.

It is illustrated with reference to first voltage-Annual distribution information of bus circuit.As shown in figure 5, described first Six samplings are carried out in preset time to first voltage-Annual distribution information.Damage curve is 501 in the figure, theoretical calculation Normalized curve is 502, in the first preset time, records the voltage-time curve of bus circuit namely bus voltage value Bus_ The mapping relations of Vol (t) (volt) and time t (millisecond).It is set according to the first preset sample frequency in the first preset time Sampling number k, each Δ t1k can be differed, and Δ t11+ Δs t12+ ...+the first preset times of Δ t1k=, in Figure 5 Six time interval Δ t11, Δ t12, Δ t13, Δ t14, Δ t15 and Δ t16 are preset, i.e., in first preset time Sampling number k=6.Certainly, sampling number k can be set as needed as other numerical value.In multiple repairing weld, correspondence is each adopted The terminal voltage changing value (that is, the difference of Bus_Vol (t) and initial voltage Bus_Volt (T1)) at sample moment is Δ Bus_Vol (T1 + Δ t11), Δ Bus_Vol (T1+ Δ t12) ... Δ Bus_Vol (T1+ Δ t1k), determine six time intervals corresponding end electricity Changing value is pressed, the result for being weighted summation process is △ Bus_Vol (T2).Weighting weight can be accounted for whole with each sampling time The proportion in a sampling period, importance of sampled point etc. determine.

The process and method phase shown in Fig. 5 sampled for second voltage-Annual distribution information of each branch line circuit Seemingly.It should be noted that when being sampled to bus circuit and branch line circuit, cycle, sample frequency and sampling number are judged It is identical, it can obtain more accurately comparative result.

Embodiment 4

Abort situation detection method provided in this embodiment, as shown in fig. 6, including the following steps：

S601：After sending lower forceful electric power instruction, whether detection switch control module occurs power-off failure failure；Wherein, it is described Lower forceful electric power instructs that each contact-making switch in the switch control module is controlled to disconnect.

S602：If power-off failure failure occurs for the switch control module, the control instruction for starting setting load is sent, And the control instruction for closing the setting load is sent after the first preset time.

S603：In first preset time, the terminal voltage changing value of the setting load and each battery strings are obtained Terminal voltage changing value.

S604：If the difference of the terminal voltage changing value of a certain battery strings and the terminal voltage changing value of the setting load is in threshold value In the range of, it is determined that the corresponding contact-making switch failure of the battery strings.

S605：In the second preset time after sending the control instruction for closing the setting load, bus circuit is obtained Terminal voltage changing value as a reference value, obtain the terminal voltage changing value of each battery strings, the second preset time can be with first Preset time uses identical value.

S606：If the difference of the sum of terminal voltage changing value of certain group battery strings and a reference value is in threshold range, really The corresponding contact-making switch failure of the fixed battery strings.

S607：Abort situation prompt message is generated, to prompt the contact-making switch position broken down.It can will be above-mentioned Abort situation prompt message is sent to associated mobile terminal or above-mentioned abort situation prompt message is sent to server, Technological improvement and accident analysis are carried out for research staff.

That is, after VMS completes the process of of short duration startup setting load, normal closing setting can be entered and loaded Journey, it is whether accurate or whether there is new abort situation to occur in order to further determine abort situation testing result, it can also be It closes in the second preset time after setting load, carries out abort situation detection again.If there is a certain or battery strings not just Often close, then after setting load is closed, can detect the terminal voltages of the battery strings rise with the terminal voltage of bus circuit and Rise, and the amplitude of the rising of the two is consistent with trend, you can determine the contact-making switch sintering failure of the battery strings.If there is two During a or more battery strings failure, it can determine whether, if the sum of terminal voltage changing value of a certain group of battery strings and benchmark The difference of value is in threshold range, if then determining that the corresponding contact-making switch of each battery strings breaks down in this group of battery strings. Using the said program of the present embodiment, the time needed for abort situation detection is added, but can obtain more accurately result.

Embodiment 5

VMS sends lower forceful electric power and instructs to BMS, each contacts of the BMS in lower forceful electric power instruction control switch control module Switch disconnects, and after having sent lower forceful electric power and having instructed, what the feedback further according to BMS did not judged in switch control module each connects VMS Whether tactile switch normally disconnects, but is determined according to the terminal voltage changing value and predeterminated voltage changing value of bus circuit, specifically The present embodiment provides a kind of method whether detection switch control module occurs power-off failure failure, as shown in fig. 7, comprises such as Lower step：

S701：Obtain the terminal voltage changing value of bus circuit；

S702：Whether the terminal voltage changing value that the bus circuit is detected according to predeterminated frequency is less than predeterminated voltage variation Value；

S703：The terminal voltage changing value for recording the bus circuit is less than the number of the predeterminated voltage changing value；

S704：When detecting that the number is greater than or equal to preset times, it is disconnected to determine that the switch control module occurs Electric failure of removal.

As shown in figure 8, the fault detection method that a specific example according to the present invention is provided, step include：Record The initial time T of lower forceful electric power instruction is sent, 801 is entered step, records the initial voltage Bus_ of the bus circuit at forceful electric power moment Vol (T), sets n=0, m=0, and whether wherein n is less than default end electricity for continuous monitoring terminal voltage changing value Δ Bus_Vol (t) The actual judgement number of changing value Δ Bus_Vol_trd (t) is pressed, m is to detect Δ Bus_Vol (t)<ΔBus_Vol_trd(t) Actual frequency (that is, the terminal voltage changing value detected is less than the number of default terminal voltage changing value)；Step 802, n ＜ are judged Whether N is true, if so, step 803 is performed, if it is not, step 807 is then performed, wherein, N is continuous monitoring terminal voltage changing value Whether Δ Bus_Vol (t) is less than the actual judgement frequency threshold value of default terminal voltage changing value Δ Bus_Vol_trd (t)；Step 803, obtain the terminal voltage changing value of bus circuit, that is, the terminal voltage changing value Bus_Vol (t) for calculating bus circuit (that is, has the Triple effect voltage value) difference DELTA Bus_Vol (t) between the initial voltage Bus_Vol (T) of lower forceful electric power initial time；Step 804, judge whether that t ＞ Δs t is set up, if so, performing step 805, if it is not, then performing step 803, wherein Δ t sentences for one In other words fixed cycle, in the present embodiment, will carry out n times judgement, judged every time using Δ t as a judgement cycle, thus certainly Second predeterminated frequency is determined；Step 805, Δ Bus_Vol (t) is judged<Whether Δ Bus_Vol_trd (t) is true, if so, Step 806 is then performed, if it is not, then performing step 808, wherein Δ Bus_Vol_trd (t) is predeterminated voltage changing value；Step 806, it is actual to judge frequency n=n+1, number m=m+1；Step 807, judge whether m >=M is true, if so, switch control mould Block failure symbol puts 1, determines switch control module failure, if it is not, then switch control module failure symbol is set to 0, wherein M is default time Number.In other words, using each Δ t as a judgement cycle, n times judgement has been carried out, if finding there be m Δ after n times judgement Bus_Vol(t)<Δ Bus_Vol_trd (t) is set up and m is more than pre-determined number, it is determined that switch control module failure.

In the present embodiment, under transmission after forceful electric power instruction, how to judge to obtain in the cycle at first to be in series with switch control The terminal voltage changing value of the bus circuit of molding block, may be employed the method similar with Fig. 5, i.e.,：It is instructed from lower forceful electric power initial Moment T rises, and records the voltage-time curve of bus circuit namely bus voltage value Bus_Vol (t) (volt) and time t (millis Second) mapping relations.According to the second preset sample frequency, sampling number a k, each Δ tk judged in period Δ t is determined It can differ, and Δ t1+ Δs t2+ ...+Δ tk=Δs t.Sampling number k can be set as needed as other numerical value. During multiple repairing weld, terminal voltage changing value (that is, Bus_Vol (t) and the initial voltage Bus_Volt (T) of corresponding each sampling instant Difference) for Δ Bus_Vol (T+ Δ t1), Δ Bus_Vol (T+ Δ t2) ... Δ Bus_Vol (T+ Δ tk), when determining six Between be spaced corresponding terminal voltage changing value, be weighted summation process result be Δ Bus_Vol (T+ Δs t).If judge Δ (T+ Δs t) is less than default terminal voltage changing value Δ Bus_Vol_trd (t) to Bus_Vol, then judges to fail 1 time, i.e. m=m+ in Fig. 8 1.Weighting weight can be accounted for importance of the proportion in entire sampling period, sampled point etc. with each sampling time and be determined.

It should be noted that " predeterminated frequency " and " the second preset sample frequency " two terms are employed in this specification, Wherein, predeterminated frequency refers to judge that the cycle is once judged using Δ t as one, needs to carry out n times judgement in total, it is therefore an objective to examine The number for judging failure is measured, and the second preset sample frequency refers to judge to carry out k sampling in period Δ t at one, purpose It is the terminal voltage changing value for obtaining bus circuit.

During carrying out n times terminal voltage changing value and judging, it can carry out judging switch control mould using two ways Block whether failure, cumulative frequency m1 and read-around ratio m2 in determined number m, wherein, cumulative frequency m1 is completes n times terminal voltage After changing value judges, judge Failure count and be m1, read-around ratio m2 is in n times terminal voltage changing value decision process, continuously Judge the number of failure, specifically include：

Method one：After the judgement of n times terminal voltage changing value is completed, it is default to judge whether cumulative frequency m1 is greater than or equal to Cumulative frequency M1, if so, judging switch control module failure.

Method two：Judge whether read-around ratio m2 is greater than or equal to default read-around ratio M2, if so, judging switch control Module failure namely it is continuous judge m2 failure when, directly definite switch control module failure, it is not necessary to wait for n times end The judgement of voltage change.

That is, when cumulative frequency and/or read-around ratio are more than preset times M, switch control module failure is judged.

In the technical scheme, by calculating the voltage difference between effective voltage value and initial voltage, to judging the cycle The corresponding voltage difference of all sampling instants be weighted summation, using the result of weighted sum as terminal voltage changing value, When sintering or adhesion occur for switch control module, the failure of switch control module still can be effectively judged in time, improves electric power storage The reliability of pond fault detect and the usage experience of user, and judge at one in the cycle, multiple repairing weld is carried out, can be carried out More accurate fail-ure criterion.

As another judgement embodiment, under transmission after forceful electric power instruction, the terminal voltage changing value of bus circuit, tool are obtained Body comprises the following steps：From obtaining lower forceful electric power and completing the initial time T of instruction, the end electricity of the bus circuit of initial time is obtained Pressure, is denoted as initial voltage Bus_Vol (T)；Timing obtains the bus circuit of given time to given time from initial time T Terminal voltage, be denoted as sample voltage value；Calculate voltage differences of the initial voltage Bus_Vol (T) between sample voltage value；It will be just Voltage difference between beginning voltage and sample voltage value is determined as terminal voltage changing value.In other words, period Δ t is judged at one It is interior, it is only once sampled in the end of Δ t, it is not necessary to summation is weighted to the voltage difference of multiple time intervals, effectively Calculation amount and data pressure are reduced, improves the reliability of fault detect.

In the above description, each judgement period Δ t or each sampling interval Δ tk in, can always with Bus_Vol (T) is used as initial voltage, to reduce computational complexity.But during actual calculating, also the cycle can be judged by upper one Initial voltage of the effective voltage value of last sampling as next judgement cycle, this can improve the plan of calculated value and actual value It is right.

Above-mentioned predeterminated frequency, preset times and predeterminated voltage changing value or the second preset sample frequency are strong under transmission It sets and stores according to user instruction before electricity instruction, can be used as definite value storage.In the technical scheme, by according to Family instruction sets and stores the corresponding default electricity of any judgement cycle that predeterminated frequency, preset times and the second predeterminated frequency determine Press changing value (that is, the ordered series of numbers of one predeterminated voltage changing value), improve failure detection schemes flexibility and reliability namely Predeterminated frequency, predeterminated voltage changing value and preset times determine the precision and real-time of fault detect, meet user not Same detection demand.

Preferably, corresponding default terminal voltage changing value of any judgement cycle, i.e., default end are determined according to predeterminated frequency Voltage change Δ Bus_Vol_trd (t) is one and the ordered series of numbers of time correlation, and this have the advantage that actual Bus_ It is straight line that Vol (t)-t curves, which are not, and predeterminated voltage changing value is arranged to an ordered series of numbers can preferably judge failure song Whether the whole process of line with normalized curve generates deviation more than threshold value, so as to more accurately judge Failure count m. It is calculated to simplify, predeterminated voltage changing value Δ Bus_Vol_trd (t) can be also arranged to a constant, still, according to not Corresponding predeterminated voltage changing value is preset respectively with the judgement cycle, is realized for the different detection periods, is determined detection threshold value Technique effect, and then improve the reliability of the fault detect of switch control module.

Fig. 9 is shown after forceful electric power instruction, obtains the voltage for the bus circuit for being in series with switch control module under transmission One example, including：Step 901, the terminal voltage of bus circuit, such as the electricity for feeding back to VMS of motor control unit MCU are obtained Pressure MCU_Vol, battery management module BMS feed back to the terminal voltage BMS_Vol of the bus circuit of VMS；Step 902, BMS_ is judged Whether Vol_Max ＞ BMS_Vol ＞ BMS_Vol_Min are true, if so, step 904 is performed, if it is not, then performing step 903； Step 903, judge whether MCU_Vol_Max ＞ MCU_Vol ＞ MCU_Vol_Min are true, if so, step 905 is performed, if It is no, then perform step 906；Step 904, real-time busbar voltage Bus_Vol (t)=BMS_Vol；Step 905, real-time busbar voltage Bus_Vol (t)=MCU_Vol；Step 906, real-time busbar voltage Bus_Vol (t)=Def_Vol, wherein, Def_Vol is silent Recognize value.

Wherein, BMS_Vol_Max be BMS maximum threshold voltages, BMS_Vol_Min be BMS minimum threshold voltages, MCU_ Vol_Max is MCU maximum threshold voltages, and MCU_Vol_Min is MCU minimum threshold voltages.That is, in fig.9, pass through Whether the voltage that BMS, MCU feed back to VMS in respective threshold range judges BMS, MCU in itself and its redundant sensor is It is no normal：

(1) judge whether BMS_Vol meets BMS_Vol_Max ＞ BMS_Vol ＞ BMS_Vol_Min, if so, BMS is just Often, using the real-time voltage of BMS_Vol as busbar voltage information, if it is not, then BMS failures.

(2) judge whether MCU_Vol meets MCU_Vol_Max ＞ MCU_Vol ＞ MCU_Vol_Min, if so, MCU is just Often, using the real-time voltage of MCU_Vol as busbar voltage information, if it is not, then MCU failures.

(3) if the equal failures of BMS and MCU, busbar voltage is set to default value, i.e. terminal voltage changing value is always 0, at this time Directly judge switch control module failure.

It should be noted that it in fig.9, is only described using BMS and MCU as acquiring unit, when there are other acquisitions It, also can be right when unit can feed back bus circuit voltage, such as when other hardware loads can also feed back bus circuit voltage The threshold voltage ranges whether the bus circuit voltage acquired in other acquiring units belongs to the acquiring unit are detected, as long as Detect that bus circuit voltage acquired in a certain acquiring unit is in the threshold voltage ranges of the corresponding acquiring unit, then with The bus circuit voltage value that the acquiring unit obtains carries out subsequent terminal voltage changing value and calculates as busbar voltage；If institute There is the busbar voltage acquired in acquiring unit beyond threshold voltage ranges, then the voltage of bus circuit is labeled as default value Def_Vol, that is, it is always 0 to think terminal voltage changing value, although switch control module may not occur being sintered or adhesion at this time Etc. failures, but still directly judge switch control module failure, this is a kind of erroneous judgement.According to the technical teaching of this field, avoid missing Sentence target when being breakdown judge, but be away from each other with art technology introduction, the embodiment of the present invention sets this mistake Sentence pattern because for using electric power as the motor vehicle of power source, the forceful electric power of accumulator directly threaten driving staff or The life security of person maintenance personal, therefore under transmission after forceful electric power instruction, if acquiring unit generates failure and cannot obtain Real bus circuit voltage value (can not physically judge whether switch control module has completed lower forceful electric power at this time), then directly It connects and judges switch control module failure, be advantageous, this energy so as to prompt subsequently to carry out operation according to the state with forceful electric power Enough improve security.

In other words, in the embodiment in fig. 9, detect and whether there is in multiple acquiring units after forceful electric power instruction under transmission The voltage of bus circuit acquired in a certain acquiring unit belongs to threshold voltage ranges corresponding with the acquisition module, if so, The terminal voltage changing value of the bus circuit acquired in the acquiring unit is then calculated, if it is not, then the voltage of bus circuit is marked For a default value, that is, voltage change is judged for 0, directly determine switch control module failure.

In the embodiment shown in fig. 9, acquiring unit include BMS, MCU or air condition with camion, vehicle-mounted cooling fan, One or more in the hardware loads such as DCDC and vehicle-mounted cooling water pump.

In the above-mentioned technical solutions, the acquiring units such as BMS, MCU and hardware load redundant sensor to accumulator group The electric power detection failure (such as being detected to the current value and/or voltage value of accumulator cell assembly, busbar) of part or contact failure When, the failure of switch control module is still judged, while production cost and maintenance cost is not promoted, in a manner of forcing to judge by accident The reliability of accumulator failure detection and the usage experience of user are improved, improves security.

On the basis of said program, following steps can also be increased：In definite switch control module failure, event is sent Hinder prompt message.In the technical scheme, by definite switch control module failure, generating fault cues information, intuitively Switch control module fault cues information alert to user, is improved the usage experience of user by ground.It on the one hand, can will be above-mentioned Fault cues information is sent to associated mobile terminal, on the other hand, can above-mentioned fault cues information be sent to power side, Power-off is forced to ensure electrical safety, in another aspect, can above-mentioned fault cues information be sent to server, for researching and developing people Member carries out technological improvement and accident analysis.

Embodiment 6

The present embodiment provides a kind of abort situation detection device, as shown in Figure 10, including：

Fault determination module 11, after sending lower forceful electric power instruction, whether detection switch control module occurs power-off failure failure； The lower forceful electric power instructs that each contact-making switch in the switch control module is controlled to disconnect.

Load control module 12 if power-off failure failure occurs for the switch control module, sends startup setting load Control instruction, and after the first preset time send close it is described setting load control instruction；Wherein, the setting load For one or more of hardware load, such as high-pressure hydraulic pump, high-pressure fan；First preset time can be according to dynamical system Configuration determine, it is as far as possible short on the basis of it can be ensured that fault location in principle.

Data acquisition module 13, in first preset time, obtain it is described setting load terminal voltage changing value and The terminal voltage changing value of each battery strings；Hardware load is connected to bus circuit, therefore the terminal voltage for obtaining setting load becomes Change value can be realized by obtaining the terminal voltage changing value of bus circuit.And obtain bus circuit voltage can by with mother The connection of line circuit has the function of the acquiring unit of voltage acquisition to carry out, i.e. VMS receives the busbar that acquiring unit obtains in real time The voltage value of circuit, and the terminal voltage changing value for setting load is calculated according to the voltage value of bus circuit；VMS is received What acquiring unit obtained in real time is serially connected with the voltage value of the branch line circuit between a battery strings and bus circuit, and according to branch line electricity The terminal voltage changing value of the battery strings is calculated in the voltage value on road.Acquiring unit can be used be connected with bus circuit BMS, MCU, hardware load etc..

Fault location module 14, if the terminal voltage changing value of a certain battery strings and the terminal voltage changing value of the setting load Difference in threshold range, it is determined that the corresponding contact-making switch failure of the battery strings.If the terminal voltage changing value of each battery strings And not in threshold range, the fault location module 14 is additionally operable to the difference of the terminal voltage changing value of the setting load： When the difference of the sum of terminal voltage changing value of certain group battery strings and the terminal voltage changing value of the setting load is in threshold range, really The equal failure of the fixed corresponding contact-making switch of this group of battery strings.

By taking the scheme that accumulator body shown in Fig. 1 includes three battery strings as an example, detect that switch control module powers off Failure of removal then illustrates that the corresponding contact-making switch of an at least battery strings does not disconnect normally, opens the setting load at this time simultaneously Continue the first preset time, the setting load can never normally open battery strings obtain electric energy, therefore the end electricity loaded Pressure changing value should be consistent with providing the terminal voltage changing value of the battery strings of electric energy for it, i.e., difference is in threshold range. Such as the normal disconnection of battery strings one, during starting setting load under the instruction of lower forceful electric power, set the electric energy whole of load Come from battery strings one, therefore the terminal voltage changing value of battery strings one and the setting load i.e. terminal voltage changing value of bus circuit should This is consistent, the terminal voltage changing value and bus circuit of battery strings one terminal voltage changing value difference in threshold range when recognize For one failure of battery strings, corresponding contact-making switch sintering or adhesion.

In addition, if when having two groups or more of battery strings failure, disconnected for example, battery strings one and battery strings two are not normal When, under the instruction of lower forceful electric power, during starting setting load, the electric energy for setting load comes from battery strings one and battery strings Two, therefore the sum of terminal voltage changing value of battery strings one and battery strings two and the setting load i.e. terminal voltage changing value of bus circuit Difference in threshold range, you can think two failure of battery strings one and battery strings, corresponding contact-making switch sintering or adhesion.

In the present embodiment, the data acquisition module 13 can obtain the end electricity of the setting load by the following two kinds mode Press changing value and the terminal voltage changing value of each battery strings.

Mode one：

In the initial time of first preset time, the voltage for obtaining the bus circuit is denoted as the first initial voltage, The voltage for obtaining the branch line circuit is denoted as the second initial voltage；

In the end time of first preset time, the voltage for obtaining the bus circuit is denoted as the first final voltage, The voltage for obtaining the branch line circuit is denoted as the second final voltage；

The voltage difference between first initial voltage and first final voltage is calculated, as the setting load Terminal voltage changing value；Calculate the voltage difference between second initial voltage and second final voltage, as with institute State the terminal voltage changing value of the battery strings of branch line circuit connected in series.

Mode two：

Obtain first voltage-Annual distribution information of the bus circuit and second voltage-time of the branch line circuit Distributed intelligence；

According to the first preset sample frequency and the first voltage-Annual distribution information determine the first effective voltage value and The initial voltage of the bus circuit of the first preset time initial time；According to first preset sample frequency and institute It states second voltage-Annual distribution information and determines the second effective voltage value and the branch in the first preset time initial time The initial voltage of line circuit；

First sampling instant is determined according to first preset sample frequency, in any first sampling instant：It calculates First voltage difference between first effective voltage value and the initial voltage of the bus circuit；Calculate described second effectively Second voltage difference between the initial voltage of voltage value and the branch line circuit；

Judge that one the corresponding first voltage difference of all first sampling instants in the cycle is weighted summation Obtain the terminal voltage changing value of the setting load；All first sampling instants corresponding the judged in the cycle one Two voltage differences are weighted summation and obtain the terminal voltage changing value with the battery strings of the branch line circuit connected in series.Wherein it is possible to Using the first effective voltage value that the last in upper one judgement cycle samples as the bus circuit in next judgement cycle Initial voltage；Using the second effective voltage value that the last in upper one judgement cycle samples as the branch in next judgement cycle The initial voltage of line circuit can improve calculated value and the degree of fitting of actual value.

Preferably, the abort situation detection device further includes：

A reference value acquisition module 15, in the second preset time after sending the control instruction for closing the setting load, The terminal voltage changing value of bus circuit is obtained as a reference value, obtains the terminal voltage changing value of each battery strings；

The fault location module 14 is additionally operable to exist in the terminal voltage changing value of a certain battery strings and the difference of a reference value When in threshold range, it is determined that the corresponding contact-making switch failure of the battery strings.During if there is two groups or more of battery strings failure, Can determine whether, if the difference of the sum of terminal voltage changing value of a certain group of battery strings and a reference value in threshold range, if Then determine the equal failure of the corresponding contact-making switch of this group of battery strings.

That is, after VMS completes the process of of short duration startup setting load, normal closing setting can be entered and loaded Journey, it is whether accurate or whether there is new abort situation to occur in order to further determine abort situation testing result, it can also be It closes in the second preset time after setting load, carries out abort situation detection again.If there is a certain battery strings are not normal It closes, then after setting load is closed, the terminal voltage of the battery strings rises with the voltage of bus circuit and is risen, and the two The amplitude of rising is consistent with trend, you can determines the contact-making switch sintering failure of the battery strings.If there is two or more electricity It during the string failure of pond, can determine whether, if the difference of the sum of terminal voltage changing value of certain group battery strings and a reference value is in threshold value model In enclosing, if then determining the equal failure of the corresponding contact-making switch of this group of battery strings.Using the said program of the present embodiment, although increasing Time needed for abort situation detection, but can obtain more accurate result.

In any of the above-described technical solution, it is preferable that the abort situation detection device further includes：

Generation module 16 generates abort situation prompt message, to prompt the contact-making switch position broken down.It can be with Above-mentioned abort situation is sent to associated mobile terminal by 17 prompt message of sending module or puies forward above-mentioned abort situation Show that information is sent to server, technological improvement and accident analysis are carried out for research staff.Sending module 17 can be antenna, radio frequency Module, Wi-Fi module, bluetooth module or cellular data communication module.

Embodiment 7

Abort situation detection device provided in this embodiment, functional block diagram such as Figure 11 institutes of the fault determination module 11 Show, specifically include：

Data receipt unit 1101 obtains the terminal voltage changing value of bus circuit；

Whether detection unit 1102, the terminal voltage changing value that the bus circuit is detected according to predeterminated frequency are less than default end Voltage change；

Recording unit 1103, the terminal voltage changing value for recording the bus circuit are less than the default terminal voltage changing value Number；

Determination unit 1104 when detecting that the number is greater than or equal to preset times, determines the switch control mould Power-off failure failure occurs for block.

In the technical scheme, by detecting the terminal voltage changing value of bus circuit, and judge terminal voltage changing value with it is pre- If the magnitude relationship of terminal voltage changing value, so judge switch control module whether failure, forceful electric power but switch in the case where BMS has been fed back When control module actual sintered or adhesion, the failure of switch control module still can be effectively judged in time, is produced into not promoted While this is with maintenance cost, the reliability of accumulator failure detection and the usage experience of user are improved.

Preferably, detection unit 1102 is additionally operable to：It detects in multiple acquiring units and is obtained with the presence or absence of a certain acquiring unit The voltage of the bus circuit taken belongs to threshold voltage ranges corresponding with the acquiring unit；The generation module 16, is additionally operable to Determination unit detects when the number is greater than or equal to preset times or detects all described obtain in the detection unit It is raw when the voltage of the bus circuit acquired in unit being taken to be not belonging to threshold voltage ranges corresponding with acquiring unit this described Into fault cues information.

Data receipt unit 1101 is additionally operable to：When detection unit 1102 detects the busbar electricity acquired in all acquiring units When the voltage on road is not admitted to threshold voltage ranges corresponding with each acquiring unit, by the voltage of bus circuit labeled as acquiescence Value.

In the technical scheme, by carrying out voltage acquisition, data receipt unit 1101 to acquiring units such as BMS and MCU The voltage value collected according to acquiring unit carries out fault detect, further increases the reliability of fault detect and accurate Property namely when BMS and/or MCU is when whole failure, it is not necessary to the multiple repairing weld for carrying out busbar voltage judges, that is, generates failure and carry Show information, and then more effectively improve the security of subsequent operation and repair.

In the above-mentioned technical solutions, it is preferable that when number is cumulative frequency, preset times are preset cumulative number；It is or secondary When number is read-around ratio, preset times are default read-around ratio.

In the technical scheme, when being cumulative frequency by setting number, preset times are preset cumulative number M1, can be with After determining N number of judgement period Δ t, whether the Failure count m of switch control module reaches M1, judges to switch control if reaching When module failure, and then promote the accuracy of fault detect by setting number is read-around ratio, preset times are default continuous Number M2 can determine switch control module failure when read-around ratio m reaches M2, it is not necessary to complete n times detection, you can confirm Switch control module failure is effectively improved the efficiency of fault detect.

In any of the above-described technical solution, it is preferable that further include：Storage unit 1105, for being set according to user instruction And store predeterminated frequency, preset times and corresponding default terminal voltage changing value of any judgement cycle.

In the technical scheme, by being set according to user instruction and storing predeterminated frequency, preset times and predeterminated frequency Corresponding default terminal voltage changing value of definite any judgement cycle improves flexibility and the reliability of failure detection schemes, Namely predeterminated frequency, default terminal voltage changing value and preset times determine the precision and real-time of fault detect, meet use The different detection demands at family.

Wherein, corresponding default terminal voltage changing value is preset according to the different decision cycle respectively, realized for different inspections The period is surveyed, the technique effect of detection threshold value is determined, and then improves the reliability of the fault detect of switch control module.

In any of the above-described technical solution, it is preferable that the data receipt unit 1101 is additionally operable to：Obtain bus circuit Voltage-vs-time distributed intelligence；Determination unit 1104 is additionally operable to：It is determined according to preset sample frequency and voltage-vs-time distributed intelligence Initial voltage when effective voltage value and the lower forceful electric power of acquisition instruct；The fault determination module 11 further includes：First computing unit 1106, for determining sampling instant according to preset sample frequency, in any sampling instant, calculate effective voltage value and initial voltage Between voltage difference；First computing unit 1006 is additionally operable to：To judging the corresponding voltage difference of all sampling instants in cycle Summation is weighted, using the result of weighted sum as terminal voltage changing value.Judge to be obtained in the cycle at first initial Voltage can be as the initial voltage in subsequent judgement cycle, but preferably, determination unit 1104 is additionally operable to：It is calculated first After unit 1106 completes the calculating of terminal voltage changing value, the effective voltage that the last in upper one judgement cycle is sampled is as next A initial voltage for judging the cycle, i.e. initial voltage are continuously updated.

In the technical scheme, by calculating the voltage difference between effective voltage value and initial voltage, to judging the cycle The corresponding voltage difference of all sampling instants be weighted summation, using the result of weighted sum as terminal voltage changing value, energy The precision of breakdown judge is enough improved, improves the reliability of accumulator failure detection and the usage experience of user.

In any of the above-described technical solution, it is preferable that data receipt unit 1101 is additionally operable to：The forceful electric power instruction under sending Initial time rises, and obtains the voltage of the bus circuit of initial time, is denoted as initial voltage；Data receipt unit 1101 is additionally operable to： Timing obtains the voltage of the bus circuit of given time, is denoted as sample voltage value to given time from initial time；The event Barrier determining module 11 further includes：Second computing unit 1107, for calculating the voltage difference between initial voltage and sample voltage value Value；Second computing unit 1107 is additionally operable to：Voltage difference between initial voltage and sample voltage value is determined as terminal voltage to become Change value.

In the technical scheme, by from initial time timing to given time, obtain the bus circuit of given time Voltage, be denoted as sample voltage value, calculate the voltage difference between initial voltage and sample voltage value, by initial voltage and sampling Voltage difference between voltage value is determined as terminal voltage changing value, when can improve fault detection efficiency namely only sample specified Difference DELTA Bus_Vol (T+ Δ t), without the electricity to multiple time intervals between the voltage value at quarter and initial time voltage value Pressure difference is weighted summation, efficiently reduces calculation amount and data pressure, improves the reliability of fault detect.

In any of the above-described technical solution, it is preferable that further include：Generation unit 1108, for determining the switch control During module failure processed, fault cues information is generated.Fault cues information is sent by sending module 17.

In the technical scheme, by sending generated fault cues information, on the one hand, can be by above-mentioned fault cues Information is sent to associated mobile terminal, on the other hand, above-mentioned fault cues information can be sent to power side, force power-off To ensure electrical safety, in another aspect, can above-mentioned fault cues information be sent to server, so that research staff carries out skill Art is improved and accident analysis.

Wherein, storage unit 1105 can be the storage devices such as ROM, RAM or EPROM, during generation unit 1108 is connected to Control prompting interface, driving motor and transmitting element 1108, detection unit 1102, recording unit 1103, determination unit 1104, first 1106 and second computing unit 1107 of computing unit is integrated in motor control unit or main control module.

Embodiment 8

The present embodiment provides a kind of accumulator cell assemblies, and as shown in figure 12, which includes each in Figure 10,11 A module, unit.As shown in the figure, accumulator cell assembly includes：The driving interface 1202 of hardware load (high pressure attachment) 1200 connects To accumulator body 1204, in fact, driving motor 1212 is also a kind of hardware load, it is separately shown in figure for clarity. Switch control module 1206 is in series between accumulator body 1204 and the bus circuit of driving interface 1202；Battery management module (i.e. BMS1208) is connected to accumulator body 1204, for controlling the closure state of switch control module 1206；Main control module (including VMS etc.) is connected to battery management module (i.e. BMS1208) and accumulator body 1204, for according to driving interface 1202 terminal voltage variation is worth to the terminal voltage changing value of bus circuit namely the terminal voltage changing value of hardware load.Wherein, BMS1208, MCU1210 and hardware load 1200 can be used as acquiring unit.Accumulator body 1204 described in figure should wrap Multiple battery strings are included, each battery strings are connected by contact-making switch with bus circuit, and all contact-making switches constitute switch control Molding block.

Wherein VMS under transmission forceful electric power instruction after, according to the terminal voltage changing value of the bus circuit and default terminal voltage Whether changing value detection switch control module 1206 occurs power-off failure failure；If the switch control module 1206 powers off Failure of removal then sends the control for starting setting load (the setting load is one or more of described hardware load 1200) System instruction, and the control instruction for closing the setting load is sent after the first preset time；In first preset time, Obtain the terminal voltage changing value of the setting load and the terminal voltage changing value of each battery strings；If the terminal voltage of a certain battery strings The difference of changing value and the terminal voltage changing value of the setting load is in threshold range, it is determined that the corresponding contact of the battery strings is opened Close failure.In the technical scheme, by setting accumulator body 1204, battery management module (i.e. in accumulator cell assembly BMS1208) and main control module (including VMS etc.), and according to the terminal voltage changing value of driving interface 1202, predeterminated voltage change 1206 failures of detection switch control module such as value, battery strings terminal voltage changing value and determine the contact-making switch to break down.In electricity The redundant sensor of pond management module (i.e. BMS1208) is to the electric power detection failure of accumulator cell assembly (such as to accumulator cell assembly Current value and/or voltage value be detected) or contact failure when, still can effectively judge switch control module 1206 in time Failure simultaneously determine abort situation, while production cost and maintenance cost is not promoted, improve accumulator failure detection can By property and the usage experience of user.

Wherein, motor vehicle central control system of the main control module including VMS.

In the above-mentioned technical solutions, it is preferable that further include：Motor control unit (i.e. MCU1210), is connected to driving interface Between 1202 and main control module (including VMS etc.), for detecting the terminal voltage changing value of driving interface 1202.In the technical solution In, by set motor control unit (i.e. MCU1210) be connected to driving interface 1202 and main control module (including VMS etc.) it Between, for detecting the terminal voltage changing value of driving interface 1202, in battery management module (i.e. BMS1208) failure, can still have Effect judges the failure of switch control module 1206 in time, improves the reliability of accumulator failure detection and the use body of user It tests.

In any of the above-described technical solution, it is preferable that further include：Memory module is connected to main control module (including VMS Deng), it is default for storing the first preset time, default terminal voltage changing value, preset times, the first preset sample frequency and second Sample frequency.

In any of the above-described technical solution, it is preferable that further include：Communication module is connected to main control module (including VMS Deng), for main control module (including VMS when) determine 1206 failure of switch control module when, send generated fault cues Information after abort situation is determined, sends abort situation prompt message.

In the technical scheme, by setting communication module, and fault cues information is sent, on the one hand, can be by failure Prompt message is sent to associated user terminal 1216, on the other hand, can fault cues information be sent to driving motor 1212 or other hardware load 1200, power-off is forced to ensure electrical safety, in another aspect, can be by fault cues information Server is sent to, so that research staff carries out technological improvement.

In any of the above-described technical solution, it is preferable that further include：CAN bus is connected to main control module (including VMS etc.) Between battery management module (i.e. BMS1208), for the closure state of switch control module 1206 to be transmitted to main control module (including VMS etc.).

In any of the above-described technical solution, it is preferable that CAN bus is also attached to main control module (including VMS etc.) and motor Between control unit (i.e. MCU1210), for terminal voltage changing value to be transmitted to main control module (including VMS etc.).

In any of the above-described technical solution, it is preferable that switch control module 1206 includes：The main control module is connected to, It is carried for when the main control module determines the switch control module failure, generating the corresponding failure of the switch control module Show information；It is additionally operable to after the main control module determines the contact-making switch position broken down, generation abort situation prompting Information.By setting reminding module, and in definite 1206 failure of switch control module and definite abort situation, in middle control prompting Corresponding prompt message is generated in interface 1214, switch control module failure and abort situation are intuitively prompted to user, carried The usage experience of user is risen.

As previously mentioned, switch control module 1206 includes multiple contact-making switches, wherein each contact-making switch can there are many real Scheme is applied, such as：

Example one, contact-making switch include the first relay and the second relay：

First relay is arranged at the cathode output end of accumulator body 1204 and the electrode input end of driving interface 1202 Between；Second relay, be arranged at accumulator body 1204 cathode output end and driving interface 1202 negative input it Between.

Example two, the contact point of the positive terminal of bus circuit and the contact point of negative terminal are using same relay Two groups of contacts.

In any of the above-described technical solution, it is preferable that hardware load is included in air condition with camion, vehicle-mounted fan and engine At least one.

Embodiment 9

Figure 13 shows the schematic block diagram of motor vehicle according to an embodiment of the invention.As shown in figure 13, according to the present invention Embodiment motor vehicle 1300, including：Abort situation detection device 1301 as described in any of the above-described technical solution；Or such as Accumulator cell assembly 1302 described in any of the above-described technical solution.Motor vehicle 1300 can use above-mentioned abort situation detection method The sintering or adhesion fault of switch control module are detected, and determine which or which contact-making switch of sintering or adhesion be One group, thus possess higher security.

In the technical scheme, by detecting the terminal voltage changing value of bus circuit, and judge terminal voltage changing value with it is pre- If the magnitude relationship of terminal voltage changing value, so judge switch control module whether failure；It is set by of short duration startup after a failure Fixed load, and detect each battery strings terminal voltage changing value and bus circuit terminal voltage changing value, it may be determined that breaks down connects Which battery strings is touched corresponding to switch is, so that it is determined that abort situation.BMS redundant sensor to the electricity of accumulator cell assembly Detect failure (such as being detected to the current value and/or voltage value of accumulator cell assembly) or contact failure when, still can effectively and When judge the failure of switch control module and carry out fault location, improve reliability and the user of accumulator failure detection Usage experience.

In the above-mentioned technical solutions, it is preferable that motor vehicle is pure electric vehicle motor vehicle, Fuel cell electric motor-car or mixing Engine motor-car.

Embodiment 10

The present embodiment provides a kind of nonvolatile computer storage media, the computer storage media is stored with computer Executable instruction, the computer executable instructions can perform the abort situation detection method in above-mentioned any means embodiment.

Embodiment 9

Figure 14 is the hardware architecture diagram of the electronic equipment of execution abort situation detection method provided in this embodiment, such as Shown in Figure 14, which includes：One or more processors 1401 and memory 1402, with a processor 1401 in Figure 14 Exemplified by.Performing the equipment of abort situation detection method can also include：Input unit 1403 and output device 1404.Processor 1401st, memory 1402, input unit 1403 can be connected with output device 1404 by bus or other modes, Tu14Zhong Exemplified by being connected by bus.

Memory 1402 is used as a kind of non-volatile computer readable storage medium storing program for executing, available for storage non-volatile software journey Sequence, non-volatile computer executable program and module, such as the execution abort situation detection method pair in the embodiment of the present application Program instruction/the module answered is (for example, attached fault determination module shown in Fig. 10 11, load control module 12, data acquisition module 13rd, fault location module 14 etc.).Processor 1401 by operation be stored in non-volatile software program in memory 1402, Instruction and module, various function application and data processing so as to execute server, that is, realize above method embodiment Perform abort situation detection method.Memory 1402 can include storing program area and storage data field, wherein, storing program area It can storage program area, the required application program of at least one function；Storage data field can be stored and detected according to abort situation Device uses created data etc..In addition, memory 1402 can include high-speed random access memory, can also include Nonvolatile memory, for example, at least a disk memory, flush memory device or other non-volatile solid state memory parts. In some embodiments, memory 1402 is optional including compared with the remotely located memory of processor 1401, these are remotely deposited Reservoir can pass through network connection to abort situation detection device.The example of above-mentioned network includes but not limited to internet, enterprise In-house network, LAN, mobile radio communication and combinations thereof.

Input unit 1403 can receive the number of input or character information and generate and the use of abort situation detection device The key signals input that family is set and function control is related.Output device 1404 may include the display devices such as display screen.

One or more of modules are stored in the memory 1402, when by one or more of processors During 1401 execution, the execution abort situation detection method in above-mentioned any means embodiment is performed.

The said goods can perform the method that the embodiment of the present application is provided, and possesses the corresponding function module of execution method and has Beneficial effect.The not technical detail of detailed description in the present embodiment, reference can be made to the method that the embodiment of the present application is provided.

The electronic equipment of the embodiment of the present invention exists in a variety of forms, includes but not limited to:

(1) mobile communication equipment:The characteristics of this kind equipment is that possess mobile communication function, and to provide speech, data It communicates as main target.This Terminal Type includes:Smart mobile phone (such as iPhone), multimedia handset, functional mobile phone and low Hold mobile phone etc..

(2) super mobile personal computer equipment:This kind equipment belongs to the scope of personal computer, there is calculating and processing work( Can, generally also possess mobile Internet access characteristic.This Terminal Type includes:PDA, MID and UMPC equipment etc., such as iPad.

(3) portable entertainment device:This kind equipment can show and play multimedia content.The kind equipment includes:Audio, Video player (such as iPod), handheld device, e-book and intelligent toy and portable car-mounted navigation equipment.

(4) server:The equipment for providing the service of calculating, the composition of server are total including processor, hard disk, memory, system Line etc., server is similar with general computer architecture, but due to needing to provide highly reliable service, in processing energy Power, stability, reliability, security, scalability, manageability etc. are more demanding.

(5) other have the function of the electronic device of data interaction.

The apparatus embodiments described above are merely exemplary, wherein the unit illustrated as separating component can To be or may not be physically separate, the component shown as unit may or may not be physics list Member, you can be located at a place or can also be distributed in multiple network element.It can be selected according to the actual needs In some or all of module realize the purpose of this embodiment scheme.

Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can It is realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on such understanding, on Technical solution is stated substantially in other words to embody the part that the prior art contributes in the form of software product, it should Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including several fingers Order, which is used, so that computer equipment (can be personal computer, server or the network equipment etc.) performs each implementation Method described in some parts of example or embodiment.

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used To modify to the technical solution recorded in foregoing embodiments or carry out equivalent substitution to which part technical characteristic； And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical solution spirit and Scope.

Claims

1. a kind of abort situation detection method, which is characterized in that include the following steps：

If power-off failure failure occurs for the switch control module, the control instruction for starting setting load is sent, and first The control instruction for closing the setting load is sent after preset time；

In first preset time, obtain the terminal voltage changing value of the setting load and the terminal voltage of each battery strings becomes Change value；

If the difference of the terminal voltage changing value of each battery strings and the terminal voltage changing value of the setting load is not in threshold range It is interior, further include following steps：

If the difference of the sum of terminal voltage changing value of certain group battery strings and the terminal voltage changing value of the setting load is in threshold range It is interior, it is determined that the corresponding contact-making switch of each battery strings breaks down in this group of battery strings；

2. abort situation detection method according to claim 1, which is characterized in that in first preset time, point The terminal voltage changing value of the setting load and the terminal voltage changing value of each battery strings are not obtained, specifically include following steps：

The voltage value for the bus circuit that acquiring unit obtains in real time is received, and according to being calculated the voltage value of bus circuit Set the terminal voltage changing value of load；

Receive the voltage for each branch line circuit being serially connected between each battery strings and bus circuit that acquiring unit obtains in real time It is worth, and the terminal voltage changing value of respective battery string is calculated according to the voltage value of each branch line circuit.

3. abort situation detection method according to claim 2, which is characterized in that obtain the terminal voltage of the setting load The terminal voltage changing value of changing value and each battery strings, specifically includes following steps：

Obtain first voltage-Annual distribution information of the bus circuit and second voltage-Annual distribution of the branch line circuit Information；

First effective voltage value is determined and described according to the first preset sample frequency and the first voltage-Annual distribution information The initial voltage of the bus circuit of first preset time initial time；According to first preset sample frequency and described Two voltage-vs-time distributed intelligences determine the second effective voltage value and the branch line electricity in the first preset time initial time The initial voltage on road；

First sampling instant is determined according to first preset sample frequency, in any first sampling instant：Described in calculating First voltage difference between the initial voltage of first effective voltage value and the bus circuit；Calculate second effective voltage Second voltage difference between value and the initial voltage of the branch line circuit；

Summation is weighted to the corresponding first voltage difference of all first sampling instants in first preset time Obtain the terminal voltage changing value of the setting load；All first sampling instants in first preset time are corresponded to Second voltage difference be weighted summation obtain the terminal voltage changing value with the battery strings of the branch line circuit connected in series.

4. a kind of abort situation detection device, which is characterized in that including：

Fault determination module, after sending lower forceful electric power instruction, whether detection switch control module occurs power-off failure failure；

Load control module if power-off failure failure occurs for the switch control module, sends the control for starting setting load Instruction, and the control instruction for closing the setting load is sent after the first preset time；

Data acquisition module in first preset time, obtains the terminal voltage changing value of the setting load and each electricity The terminal voltage changing value of pond string；

Fault location module, if the difference of the terminal voltage changing value of each battery strings and the terminal voltage changing value of the setting load is equal Not in threshold range, the fault location module is used for：

5. abort situation detection device according to claim 4, which is characterized in that the data acquisition module, it is specific to use In：

6. abort situation detection device according to claim 5, which is characterized in that the data acquisition module, it is specific to use In：

7. a kind of abort situation detection method progress abort situation detection using as described in any one of claim 1-3 or Abort situation detection device of the person as described in any one of claim 4-6 carries out the motor vehicle of abort situation detection.

8. a kind of accumulator cell assembly, which is characterized in that including：

Hardware load；

Accumulator body is connected by bus circuit with the hardware load, including multiple battery strings, each battery strings and institute It states and contact-making switch is in series between bus circuit, all contact-making switches form switch control modules；

Battery management module is connected to the accumulator body, each described is connect for control in the switch control module Switch is touched to be closed or disconnect；

Main control module is connected to the battery management module and hardware load, is additionally operable to：

If the difference of the terminal voltage changing value of each battery strings and the terminal voltage changing value of the setting load is not in threshold range It is interior, then：

9. accumulator cell assembly according to claim 8, which is characterized in that each contact-making switch includes：

First relay is arranged between the cathode output end of battery strings and the electrode input end of the bus circuit；

Second relay is arranged between the cathode output end of battery strings and the negative input of the bus circuit.

10. a kind of motor vehicle, which is characterized in that including：

Accumulator cell assembly as claimed in claim 8 or 9.