CN106501711B

CN106501711B - Abort situation detection method, device, accumulator cell assembly and motor vehicle

Info

Publication number: CN106501711B
Application number: CN201610918307.9A
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: 2017-12-19
Anticipated expiration: 2036-10-20
Also published as: CN108051748A; CN106501711A

Abstract

The embodiment of the present invention provides a kind of abort situation detection method, device, accumulator cell assembly and motor vehicle, in such scheme, 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 contact-making switch failure corresponding to the battery strings.I.e. in the case where not increasing any sensor additionally, the location of faults such as sintering or adhesion can be accurately and rapidly determined 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 means, 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 motor 104, the grade of hardware load (high pressure annex) 105. VMS101 (Vehicle Management System, vehicle management system) is broken by BMS102 to accumulator body 100 When electrically operated, the contact-making switch 1003 in each battery strings 1001 disconnects successively under BMS102 lower forceful electric power instruction, 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 now BMS102 feedbacks are complete Operated into lower forceful electric power, then can produce many technological deficiencies.Such as：

(1) driver or maintenance personal can not know power-off identification, Danger Electric shock risk be present.

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

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

Therefore, some realize the inspection of power-off failure by way of increasing sensor newly and adjusting BMS algorithms in the prior art Survey.But can not be detected for power-off failure guilty culprit particular 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 prior art or correlation technique.

The embodiment of the first aspect of the present invention proposes a kind of abort situation detection method, comprises 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 contact-making switch failure corresponding to the battery strings；

Wherein, the lower forceful electric power is instructed for controlling each contact-making switch in the switch control module to disconnect.

The embodiment of the second aspect of the present invention, it is also proposed that a kind of abort situation detection means, 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, send and start 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, obtain 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 contact-making switch failure corresponding to 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, it is connected by bus circuit with the hardware load, it includes 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, the accumulator body is connected to, for controlling each institute in the switch control module State contact-making switch closure or disconnect；

Main control module, the battery management module and hardware load are connected to, 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, including fault detect as described above dress Put；Or accumulator cell assembly as described above.

Above technical scheme described in the embodiment of the present invention, detect 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 contact-making switch failure corresponding to the battery strings.Do not increasing additionally In the case of any sensor, it can accurately and rapidly determine to sinter using existing detection part in motor vehicle power system Or the location of fault such as adhesion, significantly reduce maintenance time and cost.

Brief 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 bus 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 be 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 theory diagram of abort situation detection means described in one embodiment of the invention；

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

Figure 12 is the structural representation 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 structural representation for the electronic equipment that abort situation detection method is performed described in one embodiment of the invention.

Embodiment

It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, 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 different from other modes described here using other to implement, therefore, protection scope of the present invention is not by 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 Instruct for controlling each contact-making switch in the switch control module 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 fault location is able to ensure that 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 function that is connected with bus circuit is carried 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 use and bus electricity BMS102, MC103, the hardware load 105 etc. of road connection.In addition, in dynamical system, in the contact-making switch 1003 of battery strings, Have been provided with carrying 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 send with Receive, 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 contact-making switch failure corresponding to 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 illustrate that contact-making switch does not disconnect normally at least corresponding to a battery strings, now open the setting load 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 the failure of battery strings one 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 terminal voltage changing value sum of battery strings one and battery strings two changes with setting the terminal voltage that load is bus circuit The difference of value is in threshold range, you can thinks battery strings one and the failure of battery strings two, its corresponding contact-making switch sintering or adhesion.

, can be not after detecting that power-off failure failure occurs for switch control module using the such scheme of the present embodiment , 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 so that a battery strings break down as an example, there is provided a kind of schematic flow diagram of abort situation detection method, tool 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, into 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, can be obtained in this step by the magnitude of voltage for the branch line circuit that BMS acquisitions are connected with each battery strings 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 more than or equal to the first preset time T h1, if then entering step S405, otherwise repeat this step.The current time and initial time T1 that the duration can provide according to system clock obtain Arrive.

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)- Bat3_Vol (T2), bus circuit terminal voltage changing value △ Bus_Vol (T2)=Bus_Vol (T1)-Bus_Vol (T2), its Middle T2-T1=Th1, VMS directly obtain Bat1_Vol (T2), Bat2_Vol (T2), Bat3_Vol (T2) and Bus_ by BMS Vol (T2), simple subtraction computing is carried out afterwards and can obtain above-mentioned data.

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 Then enter step S408 in enclosing；Otherwise step S409 is entered；.

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

S409：The fault-free of battery strings one, 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 and bus electricity of battery strings two The difference of the terminal voltage changing value on road then enters step S411 in threshold range；Otherwise step S412 is entered.

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

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

S413：The failure of battery strings three, 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.

Consider in such scheme, voltage threshold Trd_Vol can be set according to the configuration of dynamical system, during setting Energy loss caused by each circuit, is obtained by the mode of demarcating in dynamical system.

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 now determine whether, if the terminal voltage of certain Battery pack string becomes Change value sum and the difference of the terminal voltage changing value of the setting load are in threshold range, if then determining every in the Battery pack string Contact-making switch corresponding to one battery strings breaks down.If for example, during starting setting load under the instruction of lower forceful electric power, examine Measure：

∣[△Bat1_Vol(T2)+△Bat2_Vol(T2)]-△Bus_Vol(T2)∣<Trd_Vol, also, △ Bat3_ Vol (T2) is almost nil, i.e., the terminal voltage changing value sum of battery strings one and battery strings two and the terminal voltage of bus circuit change 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 Disconnect, the electric energy for setting load comes from battery strings one and battery strings two, contact-making switch corresponding to battery strings one and battery strings two Occur sintering or the failure of adhesion.

In the such scheme of the present embodiment, the function using original part in dynamical system is that the acquisition of data can be achieved, And only need to carry out simple subtraction, comparison operation and abort situation detection can be achieved, reduce time needed for maintenance 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 Carve：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：First voltage difference corresponding to all first sampling instants in first preset time is entered Row weighted sum obtains the terminal voltage changing value of the setting load；All described first in first preset time are adopted Second voltage difference corresponding to the sample moment is weighted summation and obtains becoming with the terminal voltage of the battery strings of the branch line circuit connected in series Change value.

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_ Vol (t) (volt) and time t (millisecond) mapping relations.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+ ...+preset times of Δ t1k=first, in Figure 5 Default six time interval Δ t11, Δ t12, Δ t13, Δ t14, Δ t15 and Δ t16, i.e., in first preset time Sampling number k=6.Certainly, sampling number k can be set as other numerical value as needed.It is corresponding each to adopt in multiple repairing weld The terminal voltage changing value (that is, Bus_Vol (t) and initial voltage Bus_Volt (T1) difference) at sample moment is Δ Bus_Vol (T1 + Δ t11), Δ Bus_Vol (T1+ Δ t12) ... Δ Bus_Vol (T1+ Δ t1k), determine end electricity corresponding to six time intervals 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 individual 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

The abort situation detection method that the present embodiment provides, as shown in fig. 6, comprising 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 is instructed for controlling each contact-making switch in the switch control module 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 contact-making switch failure corresponding to 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 terminal voltage changing value sum of certain Battery pack string and the difference of a reference value are in threshold range, really Contact-making switch failure corresponding to the fixed battery strings.

S607：Abort situation prompt message is generated, to prompt the contact-making switch position broken down.Can will be above-mentioned Abort situation prompt message is sent to the mobile terminal of association, 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, can also be in order to further determine that whether abort situation testing result is accurate or whether has new abort situation to occur Close in the second preset time after setting load, carry out abort situation detection again.If 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 two During individual or more battery strings failure, it can determine whether, if the terminal voltage changing value sum and benchmark of a certain Battery pack string The difference of value is in threshold range, if then determining that contact-making switch corresponding to each battery strings breaks down in the Battery pack string. Using the such scheme 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 instructed to BMS, each contacts of the BMS in lower forceful electric power instruction controlling switch control module Switch off, after the instruction of lower forceful electric power has been sent, 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 a kind of method whether detection switch control module occurs power-off failure failure is provided, 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 change 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 more 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 provided according to the specific example of the present invention, step include：Record The initial time T of lower forceful electric power instruction is sent, into step 801, records the initial voltage Bus_ of the bus circuit at forceful electric power moment Vol (T), sets n=0, m=0, and wherein n is whether continuous monitoring terminal voltage changing value Δ Bus_Vol (t) is less than default end electricity Changing value Δ Bus_Vol_trd (t) actual judgement number 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 sets up, if so, step 803 is then 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 default terminal voltage changing value Δ Bus_Vol_trd (t) actual judgement frequency threshold value；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 magnitude of voltage) 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, then performing step 805, if it is not, then performing step 803, wherein Δ t is one and sentenced Fixed cycle, in other words, in the present embodiment, n times judgement is carried out, 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) sets up, 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 sets up, if so, then 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 exceedes 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, the method similar with Fig. 5 can be used, i.e.,：From the initial of lower forceful electric power instruction 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 other numerical value as needed. 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) be Δ Bus_Vol (T+ Δ t1), Δ Bus_Vol (T+ Δ t2) ... Δ Bus_Vol (T+ Δ tk), when determining six Between interval corresponding to terminal voltage changing value, the result for being weighted summation process is 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 account for the determination such as importance of the proportion in whole sampling period, sampled point with each sampling time.

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 altogether, 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 more than or equal to Cumulative frequency M1, if so, then judging switch control module failure.

Method two：Judge whether read-around ratio m2 is more than or equal to default read-around ratio M2, if so, then judging switch control Module failure, namely in continuous m2 failure of judgement, directly determine 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 All sampling instants corresponding to voltage difference 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 for specifying the moment to the specified moment 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；Will be just Voltage difference between beginning voltage and sample voltage value is defined as terminal voltage changing value.In other words, period Δ t is judged at one It is interior, only once sampled in Δ t end, it is not necessary to summation is weighted to the voltage difference of multiple time intervals, effectively Amount of calculation 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 all the time with Bus_Vol (T) is used as initial voltage, to reduce computational complexity.But during actual calculating, also it can judge the cycle 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 Set and store according to user instruction before electricity instruction, can be used as definite value storage.In the technical scheme, by according to Family instruction setting simultaneously stores default electricity corresponding to any judgement cycle that predeterminated frequency, preset times and the second predeterminated frequency determine Changing value (that is, the ordered series of numbers of one predeterminated voltage changing value) is pressed, improves flexibility and the reliability of failure detection schemes, 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, terminal voltage changing value is preset according to corresponding to predeterminated frequency determines any judgement cycle, i.e., default end 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 into 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. Calculated to simplify, predeterminated voltage changing value Δ Bus_Vol_trd (t) can be also arranged to a constant, still, according to not Predeterminated voltage changing value corresponding to being preset respectively with the judgement cycle, realization are directed to the different detection periods, determine detection threshold value Technique effect, and then improve the reliability of the fault detect of switch control module.

Fig. 9 indicates 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 motor control unit MCU electricity for feeding back to VMS are obtained Pressure MCU_Vol, battery management module BMS feed back to the terminal voltage BMS_Vol of VMS bus circuit；Step 902, BMS_ is judged Whether Vol_Max ＞ BMS_Vol ＞ BMS_Vol_Min set up, if so, step 904 is then performed, if it is not, then performing step 903； Step 903, judge whether MCU_Vol_Max ＞ MCU_Vol ＞ MCU_Vol_Min set up, if so, step 905 is then 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 is BMS maximum threshold voltages, and BMS_Vol_Min is 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 judges BMS, MCU in itself and its redundant sensor is in the respective threshold range It is no normal：

(1) judge whether BMS_Vol meets BMS_Vol_Max ＞ BMS_Vol ＞ BMS_Vol_Min, if so, then BMS is being just Often, using BMS_Vol real-time voltage 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, then MCU is being just Often, using MCU_Vol real-time voltage 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, now Directly judge switch control module failure.

It should be noted that in fig.9, be only described using BMS and MCU as acquiring unit, when other acquisitions being present , 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 bus circuit voltage acquired in a certain acquiring unit be in should in the threshold voltage ranges of acquiring unit, then with The bus circuit magnitude of voltage that the acquiring unit obtains carries out follow-up terminal voltage changing value and calculated as busbar voltage；If institute There is the busbar voltage acquired in acquiring unit to exceed 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 now switch control module may not occur sintering or adhesion Etc. failure, but still directly judge switch control module failure, this is a kind of erroneous judgement.According to the technical teaching of this area, avoid missing Sentence target when being breakdown judge, but mutually deviate from art technology teaching, embodiments of the invention set this mistake Sentence pattern because for using electric power as the motor vehicle of power source, the forceful electric power of battery directly threaten driving staff or The life security of person maintenance personal, therefore under transmission after forceful electric power instruction, if acquiring unit produces failure and can not obtained Real bus circuit magnitude of voltage (now can not physically judge whether switch control module has completed lower forceful electric power), then directly Connect and judge 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 it is, 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 includes BMS, MCU, or air condition with camion, vehicle-mounted cooling fan, One or more in the hardware load such as DCDC and vehicle-mounted cooling water pump.

In the above-mentioned technical solutions, the acquiring unit such as BMS, MCU and hardware load redundant sensor to batteries The electric power detection failure (such as being detected to accumulator cell assembly, the current value of bus and/or magnitude of voltage) of part or contact failure When, the failure of switch control module is still judged, while production cost and maintenance cost is not lifted, 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 such scheme, following steps can also be increased：It is determined that during switch control module failure, sending therefore Hinder prompt message.In the technical scheme, by it is determined that during 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.On the one hand, can will be above-mentioned Fault cues information is sent to the mobile terminal of association, on the other hand, above-mentioned fault cues information can be sent into power side, Force power-off to ensure electrical safety, another further aspect, above-mentioned fault cues information can 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 means, 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 is instructed for controlling each contact-making switch in the switch control module to disconnect.

Load control module 12, if power-off failure failure occurs for the switch control module, send and start 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 fault location is able to ensure that 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 acquiring unit with voltage acquisition function of line circuit connection is carried out, i.e. the bus that VMS receptions acquiring unit obtains in real time The magnitude of voltage of circuit, and the terminal voltage changing value for setting load is calculated according to the magnitude of voltage of bus circuit；VMS is received What acquiring unit obtained in real time is serially connected with the magnitude of voltage 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 magnitude of voltage on road.Acquiring unit can use 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 contact-making switch failure corresponding to 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 terminal voltage changing value sum of certain Battery pack string and the difference of the terminal voltage changing value of the setting load are in threshold range, really The equal failure of contact-making switch corresponding to the fixed Battery pack string.

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 illustrate that contact-making switch does not disconnect normally at least corresponding to a battery strings, now open the setting load 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 is answered with the terminal voltage changing value that load is bus circuit is set This is consistent, battery strings one terminal voltage changing value and bus circuit terminal voltage changing value difference in threshold range when recognize For the failure of battery strings one, its 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 terminal voltage changing value sum of battery strings one and battery strings two is with setting the terminal voltage changing value that load is bus circuit Difference in threshold range, you can think battery strings one and the failure of battery strings two, its 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 State second voltage-Annual distribution information and determine 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：Calculate First voltage difference between first effective voltage value and the initial voltage of the bus circuit；It is effective to calculate described second Second voltage difference between the initial voltage of magnitude of voltage and the branch line circuit；

Summation is weighted to first voltage difference corresponding to all first sampling instants judged in the cycle Obtain the terminal voltage changing value of the setting load；To the corresponding to all first sampling instants judged in the cycle 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；The branch using the second effective voltage value that the last in upper one judgement cycle samples as next judgement cycle The initial voltage of line circuit, it is possible to increase calculated value and the degree of fitting of actual value.

Preferably, the abort situation detection means also 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, it 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 contact-making switch failure corresponding to the battery strings.During if two groups or more of battery strings failure, Can determine whether, if the terminal voltage changing value sum of a certain Battery pack string and the difference of a reference value in threshold range, if Then determine the equal failure of contact-making switch corresponding to the Battery pack string.

That is, after VMS completes the process of of short duration startup setting load, normal closing setting can be entered and loaded Journey, can also be in order to further determine that whether abort situation testing result is accurate or whether has new abort situation to occur Close in the second preset time after setting load, carry out abort situation detection again.If a certain battery strings are not normal Close, then after setting load is closed, the terminal voltage of the battery strings rises and risen with the voltage of bus circuit, 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 two or more electricity During the string failure of pond, it can determine whether, if the terminal voltage changing value sum of certain Battery pack string and the difference of a reference value are in threshold value model In enclosing, if then determining the equal failure of contact-making switch corresponding to the Battery pack string.Using the such scheme of the present embodiment, although increase Time needed for abort situation detection, but can obtain more accurate result.

In any of the above-described technical scheme, it is preferable that the abort situation detection means also includes：

Generation module 16, abort situation prompt message is generated, to prompt the contact-making switch position broken down.Can be with Above-mentioned abort situation is sent to the mobile terminal of association by the prompt message of sending module 17, or above-mentioned abort situation is carried 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

The abort situation detection means that the present embodiment provides, theory diagram such as Figure 11 institutes of the fault determination module 11 Show, specifically include：

Data receipt unit 1101, obtain 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；

Determining unit 1104, when detecting that the number is more than or equal to preset times, determine 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 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 lifted 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：Detect in multiple acquiring units and 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 Determining unit detects when the number is more than or equal to preset times or detects all described obtain in the detection unit It is raw when taking the voltage of the bus circuit acquired in unit 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 bus 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 magnitude of voltage collected according to acquiring unit carries out fault detect, further increasing the reliability of fault detect and accurate Property, namely in whole failures such as BMS and/or MCU, 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 maintenance.

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 by setting number being cumulative frequency, 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, and switch control is judged if reaching Module failure, and then lift the accuracy of fault detect, when by setting number be read-around ratio, preset times for it is default continuously Number M2, switch control module failure can be determined when read-around ratio m reaches M2, it is not necessary to complete n times detection, you can confirm Switch control module failure, it is effectively improved the efficiency of fault detect.

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

In the technical scheme, by being set according to user instruction and storing predeterminated frequency, preset times and predeterminated frequency Terminal voltage changing value is preset corresponding to any judgement cycle determined, 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, terminal voltage changing value is preset corresponding to being preset respectively according to the different decision cycle, realization is directed to different inspections The period is surveyed, determines the technique effect of detection threshold value, and then improve the reliability of the fault detect of switch control module.

In any of the above-described technical scheme, it is preferable that the data receipt unit 1101 is additionally operable to：Obtain bus circuit Voltage-vs-time distributed intelligence；Determining unit 1104 is additionally operable to：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 also 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 voltage difference corresponding to all sampling instants in cycle Summation is weighted, terminal voltage changing value is used as using the result of weighted sum.Obtained within first judgement cycle initial Voltage can be as the initial voltage in follow-up judgement cycle, but preferably, determining unit 1104 is additionally operable to：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 The individual 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 All sampling instants corresponding to voltage difference be weighted summation, terminal voltage changing value, energy are used as using the result of weighted sum 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 scheme, 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 for the bus circuit for specifying the moment, is denoted as sample voltage value to the specified moment from initial time；The event Barrier determining module 11 also 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 defined as into terminal voltage to become Change value.

In the technical scheme, by from initial time timing to the specified moment, obtain the bus circuit for specifying the moment 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 magnitude of voltage is defined 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 magnitude of voltage and initial time magnitude of voltage at quarter Pressure difference is weighted summation, efficiently reduces amount of calculation and data pressure, improves the reliability of fault detect.

In any of the above-described technical scheme, it is preferable that also include：Generation unit 1108, for it is determined that 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 the fault cues information generated, on the one hand, can be by above-mentioned fault cues Information is sent to the mobile terminal of association, on the other hand, above-mentioned fault cues information can be sent to power side, force power-off To ensure electrical safety, another further aspect, above-mentioned fault cues information can be sent to server, so that research staff carries out skill Art is improved and accident analysis.

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

Embodiment 8

The present embodiment provides a kind of accumulator cell assembly, and as shown in figure 12, the accumulator cell assembly includes each in Figure 10,11 Individual module, unit.As illustrated, accumulator cell assembly includes：The driving interface 1202 of hardware load (high pressure annex) 1200 connects To accumulator body 1204, in fact, motor 1212 and a kind of hardware load, in order to clearly in figure it is separately shown. 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), accumulator body 1204 is connected to, the closure state for controlling switch control module 1206；Main control module (including VMS etc.), battery management module (i.e. BMS1208) and accumulator body 1204 are connected to, for according to driving interface 1202 terminal voltage change 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 use as acquiring unit.Accumulator body 1204 described in figure, it 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 send 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 contact is opened corresponding to the battery strings 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 The contact-making switch that the failures of detection switch control module 1206 such as value, battery strings terminal voltage changing value and determination are broken 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 magnitude of voltage detected) or contact failure when, still can effectively judge switch control module 1206 in time Failure simultaneously determines abort situation, while production cost and maintenance cost is not lifted, 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 also 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 scheme 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 Test.

In any of the above-described technical scheme, it is preferable that also include：Memory module, it 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 scheme, it is preferable that also include：Communication module, it is connected to main control module (including VMS Deng), for when main control module determines 1206 failure of switch control module (including VMS etc.), sending the fault cues generated Information, it is determined that after abort situation, send 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 the user terminal 1216 of association, on the other hand, fault cues information can be sent into motor 1212 or other hardware loads 1200, forcing power-off, another further aspect can be by fault cues information to ensure electrical safety Send to server, so that research staff carries out technological improvement.

In any of the above-described technical scheme, it is preferable that also include：CAN, it 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 scheme, it is preferable that CAN 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 scheme, it is preferable that switch control module 1206 includes：The main control module is connected to, Carried for failure corresponding to when the main control module determines the switch control module failure, generating the switch control module Show information；It is additionally operable to behind the contact-making switch position that main control module determination is broken down, generation abort situation prompting Information.By setting reminding module, and it is determined that the failure of switch control module 1206 and when determining abort situation, in middle control prompting Prompt message corresponding to generation, is intuitively prompted to user by switch control module failure and abort situation, carries in interface 1214 The usage experience of user is risen.

As it was previously stated, switch control module 1206 includes multiple contact-making switches, each of which contact-making switch can have a variety of realities Scheme is applied, such as：

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

First relay, it 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 scheme, 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 means 1301 described in any one technical scheme as described above；Or such as Accumulator cell assembly 1302 described in any of the above-described technical scheme.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；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 magnitude of voltage 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 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, and the computer-readable storage medium 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 for the execution abort situation detection method that the present embodiment provides, such as Shown in Figure 14, the equipment 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 Programmed instruction/the module answered is (for example, fault determination module 11, load control module 12, data acquisition module shown in accompanying drawing 10 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 Application program that can be required for storage program area, 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 certain embodiments, memory 1402 is optional including relative to the remotely located memory of processor 1401, these are remotely deposited Reservoir can pass through network connection to abort situation detection means.The example of above-mentioned network includes but is not limited to internet, enterprise In-house network, LAN, mobile radio communication and combinations thereof.

Input unit 1403 can receive the numeral or character information of input, and produce the use with abort situation detection means The key signals input that family is set and function control is relevant.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 functional module of execution method and has Beneficial effect.Not ins and outs 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 is not limited to:

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

(2) super mobile personal computer equipment:This kind equipment belongs to the category of personal computer, there is calculating and processing work( Can, typically 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 content of multimedia.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, internal memory, system Line etc., server is similar with general computer architecture, but due to needing to provide highly reliable service, therefore in processing energy Power, stability, reliability, security, scalability, manageability etc. require higher.

(5) other electronic installations with data interaction function.

Device embodiment described above is only schematical, wherein the unit illustrated as separating component can To be or may not be physically separate, it can be as the part that unit is shown or may not be physics list Member, you can with positioned at a place, or can also be distributed on multiple NEs.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 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 The part that technical scheme substantially in other words contributes to prior art is stated to embody in the form of software product, should Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including some fingers Make to cause a computer equipment (can be personal computer, server, or network equipment etc.) to perform 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 within the art that：It still may be used To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out 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 scheme spirit and Scope.

Claims

1. a kind of abort situation detection method, it is characterised in that comprise 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 terminal voltage changing value of a certain battery strings and it is described setting load terminal voltage changing value difference in threshold range, Determine contact-making switch failure corresponding to the battery strings；

2. abort situation detection method according to claim 1, it is characterised 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 magnitude of voltage for the bus circuit that acquiring unit obtains in real time is received, and according to being calculated the magnitude of voltage 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 magnitude of voltage of each branch line circuit.

3. abort situation detection method according to claim 2, it is characterised in that the acquiring unit include BMS, MCU, One or more in hardware load.

4. abort situation detection method according to claim 2, it is characterised 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：

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

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

5. abort situation detection method according to claim 2, it is characterised 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 first voltage difference corresponding to all first sampling instants in first preset time Obtain the terminal voltage changing value of the setting load；It is corresponding to all first sampling instants in first preset time Second voltage difference be weighted summation obtain the terminal voltage changing value with the battery strings of the branch line circuit connected in series.

6. abort situation detection method according to claim 1, it is characterised in that further comprising the steps of：

In the second preset time after sending the control instruction for closing the setting load, the terminal voltage for obtaining bus circuit becomes Change value obtains the terminal voltage changing value of each battery strings as a reference value；

If the terminal voltage changing value of a certain battery strings and the difference of a reference value are in threshold range, it is determined that the battery strings are corresponding Contact-making switch failure.

7. abort situation detection method according to claim 1, it is characterised in that further comprising the steps of：

Abort situation prompt message is generated, to prompt the contact-making switch position broken down.

8. according to the abort situation detection method described in claim any one of 1-7, it is characterised in that send lower forceful electric power instruction Afterwards, whether detection switch control module occurred in the step of power-off failure failure, specifically included：

Obtain the terminal voltage changing value of bus circuit；

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

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

When detecting that the number is more than or equal to preset times, determine that power-off failure event occurs for the switch control module Barrier.

9. abort situation detection method according to claim 8, it is characterised in that after sending lower forceful electric power instruction, obtain female The terminal voltage changing value of line circuit, specifically includes following steps：

Detect in multiple acquiring units with the presence or absence of the bus circuit acquired in a certain acquiring unit terminal voltage belong to Threshold voltage ranges corresponding to the acquiring unit, if it is, calculating the end of the bus circuit acquired in the acquiring unit Voltage change, if it is not, then the terminal voltage of the bus circuit is labeled as into a default value.

10. abort situation detection method according to claim 8, it is characterised in that in the terminal voltage of the bus circuit During labeled as default value, directly determine that power-off failure failure occurs for the switch control module.

11. abort situation detection method according to claim 8, it is characterised in that when the number is cumulative frequency, institute It is preset cumulative number to state preset times；Or the number, when being read-around ratio, the preset times are default read-around ratio.

12. abort situation detection method according to claim 8, it is characterised in that after sending lower forceful electric power instruction, obtain female The terminal voltage changing value of line circuit, specifically includes following steps：

From the initial time for sending lower forceful electric power instruction, the terminal voltage of the bus circuit of the initial time is obtained, is denoted as initial Magnitude of voltage；

Timing obtains the terminal voltage of the bus circuit at the specified moment, is denoted as adopting to the specified moment from the initial time Sample magnitude of voltage；

Calculate terminal voltage of the voltage difference as the bus circuit between the initial voltage value and the sample voltage value Changing value.

13. abort situation detection method according to claim 8, it is characterised in that after sending lower forceful electric power instruction, obtain female The terminal voltage changing value of line circuit, specifically includes following steps：

Obtain tertiary voltage-Annual distribution information of the bus circuit；

Under determining the 3rd effective voltage value according to the second preset sample frequency and the tertiary voltage-Annual distribution information and obtain Forceful electric power completes the 3rd initial voltage of bus circuit during instruction；

Second sampling instant is determined according to second preset sample frequency, in any second sampling instant, described in calculating Tertiary voltage difference between 3rd effective voltage value and the 3rd initial voltage；

Summation is weighted to tertiary voltage difference corresponding to all second sampling instants judged in the cycle, with institute State terminal voltage changing value of the result as the bus circuit of weighted sum.

14. abort situation detection method according to claim 8, it is characterised in that after sending lower forceful electric power instruction, obtain female The terminal voltage changing value of line circuit, it is further comprising the steps of：

Using the 3rd effective voltage value that the last in upper one judgement cycle samples as the bus circuit in next judgement cycle 3rd initial voltage.

15. a kind of abort situation detection method using as described in any one of claim 1-14 carries out abort situation detection Motor vehicle.

A kind of 16. abort situation detection means, it is characterised 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, send 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, obtain 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 a certain battery strings and the terminal voltage changing value of the setting load exists In threshold range, it is determined that contact-making switch failure corresponding to the battery strings；

17. abort situation detection means according to claim 16, it is characterised in that the data acquisition module, specifically For：

18. abort situation detection means according to claim 17, it is characterised in that the acquiring unit include BMS, One or more in MCU, hardware load.

19. abort situation detection means according to claim 17, it is characterised in that the data acquisition module, specifically For：

20. abort situation detection means according to claim 17, it is characterised in that the data acquisition module, specifically For：

21. abort situation detection means according to claim 17, it is characterised in that also include：

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

The fault location module, it is additionally operable in the terminal voltage changing value of a certain battery strings and the difference of a reference value in threshold value model When enclosing interior, it is determined that contact-making switch failure corresponding to the battery strings.

22. abort situation detection means according to claim 16, it is characterised in that also include：

Generation module, abort situation prompt message is generated, to prompt the contact-making switch position broken down.

23. according to the abort situation detection means described in claim any one of 16-22, it is characterised in that the failure determines Module, specifically include：

Data receipt unit, obtain the terminal voltage changing value of bus circuit；

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

Recording unit, the terminal voltage changing value for recording the bus circuit are less than the number of the predeterminated voltage changing value；

Determining unit, when detecting that the number is more than or equal to preset times, it is disconnected to determine that the switch control module occurs Electric failure of removal.

24. abort situation detection means according to claim 23, it is characterised in that the detection unit is additionally operable to：

Detect in multiple acquiring units and belong to the presence or absence of the voltage of the bus circuit acquired in a certain acquiring unit Threshold voltage ranges corresponding with acquiring unit this described；

The generation module, be additionally operable to when the determining unit detects that the number is more than or equal to preset times or The detection unit detects that the voltage of the bus circuit acquired in all acquiring units is not belonging to being obtained this described When taking threshold voltage ranges corresponding to unit, fault cues information is generated.

25. abort situation detection means according to claim 24, it is characterised in that the data receipt unit is also used In：

When the detection unit detect the voltage of the bus circuit acquired in all acquiring units be not admitted to Corresponding to each acquiring unit during threshold voltage ranges, the voltage of the bus circuit is labeled as default value.

26. abort situation detection means according to claim 25, it is characterised in that the confirmation unit, in the inspection When survey unit detects that the voltage of the bus circuit is labeled as default value, directly determine that the switch control module powers off Failure of removal.

27. abort situation detection means according to claim 23, it is characterised in that the data receipt unit is also used In：

From obtaining lower forceful electric power and completing the initial time of instruction, the voltage of the bus circuit of the initial time is obtained, is denoted as just Beginning magnitude of voltage；

Timing obtains the voltage of the bus circuit at the specified moment, is denoted as sampling to the specified moment from the initial time Magnitude of voltage；

28. abort situation detection means according to claim 23, it is characterised in that the data receipt unit is also used In：

Obtain tertiary voltage-Annual distribution information of the bus circuit；

29. abort situation detection means according to claim 28, it is characterised in that the data receipt unit is also used In：

30. a kind of abort situation detection means using as described in any one of claim 16-29 carries out abort situation inspection The motor vehicle of survey.

A kind of 31. accumulator cell assembly, it is characterised in that including：

Hardware load；

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

Battery management module, the accumulator body is connected to, each described is connect for control in the switch control module Touch switch closure or disconnect；

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

32. accumulator cell assembly according to claim 31, it is characterised in that the main control module is additionally operable to：

Determine whether the switch control module is former according to the terminal voltage changing value of the bus circuit and predeterminated voltage changing value Barrier.

33. accumulator cell assembly according to claim 31, it is characterised in that also include：

Motor control unit, it is connected by bus circuit with the hardware load, for detecting the terminal voltage of the bus circuit Changing value, and the terminal voltage changing value of the bus circuit is sent to the main control module.

34. accumulator cell assembly according to claim 31, it is characterised in that also include：

Memory module, the main control module is connected to, become for storing the first preset time, the second preset time, predeterminated voltage Change value, preset times, the first preset sample frequency and the second preset sample frequency.

35. accumulator cell assembly according to claim 31, it is characterised in that also include：

Communication module, the main control module is connected to, for when the main control module determines the switch control module failure, Send the fault cues information generated；It is additionally operable to behind the contact-making switch position that main control module determination is broken down Send the abort situation prompt message generated.

36. accumulator cell assembly according to claim 31, it is characterised in that also include：

CAN, it is connected between the main control module and the battery management module, for the battery management module to be obtained The closure state or off-state for the switch control module got are transmitted to the main control module.

37. accumulator cell assembly according to claim 36, it is characterised in that：

The CAN is also attached between the main control module and the motor control unit, for by the motor control The terminal voltage changing value for the bus circuit that unit is got is transmitted to the main control module.

38. accumulator cell assembly according to claim 31, it is characterised in that the switch control module also includes：

Reminding module, the main control module is connected to, for when the main control module determines the switch control module failure, Generate fault cues information corresponding to the switch control module；It is additionally operable to the contact broken down in main control module determination After switching position, abort situation prompt message is generated.

39. accumulator cell assembly according to claim 31, it is characterised in that each contact-making switch includes：

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

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

40. according to the accumulator cell assembly described in claim any one of 31-39, it is characterised in that

The hardware load includes at least one of vehicle-mounted electric air conditioner, vehicle-mounted cooling fan, DCDC and vehicle-mounted cooling water pump.

A kind of 41. motor vehicle, it is characterised in that including：

Accumulator cell assembly as any one of claim 31 to 40.

42. motor vehicle according to claim 41, it is characterised in that：

The motor vehicle is pure electric motor vehicle, Fuel cell electric motor-car or hybrid motor vehicle.