CN109245197A

CN109245197A - Battery group working method and battery group

Info

Publication number: CN109245197A
Application number: CN201810991263.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Wei Xiufang
Current assignee: Wei Xiufang
Priority date: 2014-05-28
Filing date: 2014-05-28
Publication date: 2019-01-18
Also published as: CN105305510B; CN105305510A

Abstract

Invention describes a kind of by multiple constituted battery modules of being connected by cell batteries, load capacitor, DC-DC converter, battery module branch charge controller, battery module monitor controller, total monitor, displacement sensor, boost type battery group composed by temperature sensor, realize a variety of working methods of boost type battery group, enable constitute boost type battery group in each battery module it is mutually isolated in charge and discharge process and work independently, it can be avoided battery module influencing each other after in groups, and the discharge current of each battery module is adjusted according to the current state situation of each cell batteries, the cell batteries in each battery module may make to be in relatively reasonable low current electric discharge working condition, it improves battery life and application is safe, and have Have the characteristics that practical, easy to implement.

Description

Battery group working method and battery group

The application is that application No. is 2014102289868, invention and created names are as follows: boost type battery group working method and liter Pressure type battery group, the applying date are as follows: the divisional application of application for a patent for invention on May 28th, 2014.

Technical field

The present invention is boost type battery group working method and boost type battery group, belongs to accumulator of electric car in groups Art field.

Background technique

It is all using to monomer for the requirement for meeting load voltage in existing accumulator of electric car burst mode The mode of battery and battery module series boosting is combined to obtain the battery group for loading required high voltage output； Due to the limitation of the current production technology of battery and technique, cause the technical indicator consistency of each cell batteries poor, It influences each other after in groups, therefore the high tension battery group obtained in a manner of battery module of connecting has the following deficiencies:

1, battery group be easy in discharge process so that over-discharge electrical phenomena occur in certain cell batteries therein；? Battery group be easy in charging process so that certain cell batteries therein occur overcharging electrical phenomena；Although in electric power storage Switch and safety measures can be set in the group discharge loop of pond, turn off the electric discharge work of battery group in case of need, but Made due to structure of series boosting mode itself battery group there are intrinsic high pressure, it is safe to application have it is certain It influences；

2, due to the inconsistency of the cell batteries of composition battery module, so that the actual capacity of each battery module, Or load capacity is not identical, therefore in the discharge process of battery group, then can make that some actual capacities are low, load capacity is poor Cell batteries be in unreasonable heavy-current discharge working condition, and related battery module is made to shorten discharge time, So that other battery module burdens, reduce discharge time and the service life of battery group；

3, in the application of existing electric car, residual capacity and electric car to the Vehicular accumulator cell group of electric car it is surplus The monitoring and display of remaining running distance are particularly important, in existing technology, to the reason of the current capacities of each cell batteries It is larger by calculated result and practical situations gap, in the current capacities monitoring to battery group, since individual monomers store The performance of battery declines, and influences the fan-out capability of entire battery group, therefore occur very to the capacity monitoring of entire battery group Big deviation, this makes troubles for the application of electric car, influences the popularization and use of electric car；

4, in the application of existing electric car, due to the theoretical calculation of the current capacities of the Vehicular accumulator cell group to electric car As a result and monitoring situation and practical situations gap it is larger, can make electric car driving when occur monitor be shown as still having Compared with multicapacity, but in actual use, residual capacitance sharply drops to no electrical energy drive, and the vehicular electricity storage of electric car occurs The involuntary stoppage phenomenon that pond occurs by actual capacity problem, this makes troubles for the application of electric car, influences electric car Popularization and use.

Summary of the invention

For convenience of narration, following introduce is made to individual name, pa-rameter symbols and the correlativity in the present invention:

Cell batteries: also including by multiple cell batteries to constitute each minimum secondary battery unit in battery module In parallel and composition battery；

Battery module: refer to the battery connected by multiple cell batteries and formed, output voltage is lower than battery group Output voltage；

High tension battery group: refer to and battery group, high tension battery group are exported by the high voltage that multiple battery modules are composed in series Output voltage be higher than single battery module therein output voltage；

Boost type battery group: referring to by multiple battery modules, the electric power storage that cocurrent forms after being boosted by independent DC-DC converter Pond group；

The nominal electricity of battery module: for the nominal capacity of some cell batteries therein, usually dispatch from the factory theoretical value or mark Quasi- test value；

The total discharge capacity of the nearest history of battery module: i.e. battery module starts to be discharged to correspondence after the last charging complete The discharge electricity amount statistical value of the battery module during until DC-DC converter closing input and output electric current；That is: battery module From electric discharge is started up to electric discharge is closed；

Accumulator capacity decay coefficient: cell batteries capacity decay value is cell batteries volume change index；The coefficient with The factors such as accumulator material, technique, working environment, working time are related, and by storage battery production, producer is provided；

Battery module current capacities: refer to that battery module starts to discharge after charging, after discharging after a period of time Residual capacitance；

The total charge capacity of the history of battery module: when i.e. the charging of battery module last time finishes, the battery module is total Charge volume；

Symbol definition and correlativity expression formula:

1, the total discharge capacity CLn of the history of battery module

CLn=I1* △ t1+I2* △ t2+I1* △ t2+ ...+In* △ tm

Wherein:

CLn is the total discharge capacity of history of battery module n, and m is that module last time discharges into corresponding DC-DC converter closing When input and output electric current, the quantity of the total discharge time section of the history of corresponding battery module n；

I1 is the discharge current in the △ t1 period in upper primary discharge process completely；

I2 is the discharge current in the △ t2 period in upper primary discharge process completely；

…；

Im is the discharge current in the △ tm period in upper primary discharge process completely；

2, discharge electricity amount Cln in this electric discharge work of battery module

Cln=I1n*tl1+I2n*tl2+ ...+Imn*tlm

Wherein:

Cln is battery module n discharge electricity amount in this electric discharge work；

In1 is that battery module n passes by the discharge current in time period t l1 in this electric discharge,；

In2 is that battery module n passes by the discharge current in time period t l2 in this electric discharge,；

….；

Inm is that battery module n passes by the discharge current in time period t lm in this electric discharge,；

Wherein m is in this electric discharge, passes by cumulative time segment number of discharging；

3, the current capacities Cn of battery module

Cn=rn*CLn-Cln；Wherein:

Cn is the current capacities of corresponding battery module n；

Rn is the capacity decay coefficient of battery module n；

CLn is the total discharge capacity of nearest history of battery module n；

Cln is battery module n discharge electricity amount after this electric discharge work starts；

4, the current total capacity C of battery module

C=C1+C2+ ...+Cn

Cn is the current capacities of corresponding battery module n；

5, the electric discharge reference factor under the conditions of capacity ratio

K1=C1/C, k2=C2/C ..., kn=Cn/C；

Kn is the electric discharge reference factor of battery module n；

6, the electric discharge reference factor under the conditions of voltage ratio

K1=Δ V1/ Δ V, k2=Δ V2/ Δ V ..., kn=Δ Vn/ Δ V；

Wherein: Δ V=Vmax-Vmin

The charge cutoff voltage of Vmax- cell batteries

The discharge cut-off voltage of Vmin- cell batteries

The current voltage of Δ V1=V1-Vmin V1 battery module 1

The current voltage of Δ V2=V2-Vmin V2 battery module 2

…

The current voltage of Δ Vn=Vn-Vmin Vn battery module n；

Kn remains as the electric discharge reference factor of battery module n at this time；

7, socking out time tn of each battery module under the conditions of current flow

Tn=Cn/In

Tn is socking out time of the battery module n under present discharge current condition；

In is the present discharge electric current of battery module n；

Cn is the current capacities of corresponding battery module n；

T1, t2, t3 ..., tn be discharge time of each battery module under present discharge current condition, by arranging from small to large Column；

8, the boost type battery group socking out time

T=T1+T2+T3+ ...+Tn；Wherein:

T is the socking out time of the boost type battery group；

T1, T2, T3 ..., Tn be each battery module after previous battery module stops electric discharge until the battery mould Block stops the after discharge time of electric discharge, by arranging from small to large；And:

T1=t1；

T2=(C2-I2*T1)/[I2+I1/ (N-1)]

T3=[C3-I3* (T1+T2)]/[I3+ (I1+I2)/(N-2)]

…

Tn=[Cn-In* (T1+T2+ ...+Tn-1)]/{ In+ (I1+I2+ ...+In-1)/[N- (n-1)] }

Wherein N is the battery module quantity that discharge condition is in the boost type battery group；

9, the total charge capacity COn of the history of battery module

COn=IO1* △ tO1+IO2* △ tO2+IO1* △ tO2+ ...+IOm* △ tOm

Wherein:

COn is the total charge capacity of history of battery module n, when m is that module last time charging finishes, corresponding battery mould The quantity of the history total charging time section of block n；

IO1 is the charging current in the △ tO1 period in upper primary charging process；

IO2 is the charging current in the △ tO2 period in upper primary charging process；

…；

IOm is the charging current in the △ tm period in upper primary charging process；

10, current battery module discharge current limit value Inm

Inm=kn*Inmax

Wherein: Inmax is the discharge current limit value of battery module n；

In addition: V is current electric car running speed；S is the remaining running distance of electric car under conditions present, i.e., electronic vapour Vehicle can be further continued for the distance of driving after current time；Module in attached drawing process is battery module.

In order to solve the above problem 1, the present invention proposes a kind of boost type battery group working method, is stored using multiple by monomer Battery is composed in series low tension battery module, then to each low tension battery module using the boosting of independent DC-DC converter Voltage indexes needed for working method reaches load, and the working method of output is merged to the output electric current after boosting and is obtained To boost type battery group, enables each battery module mutually isolated and work independently, can be avoided each battery Module influencing each other in charge/discharge operation avoids the excessive charge and discharge of cell batteries therein, due to battery module Lower than the output voltage after combination, as long as and turn off the work of DC-DC converter and can eliminate high voltage, therefore can be avoided storage Intrinsic high-pressure phenomena in battery pack, improves battery life and application is safe, and has the characteristics that easy to implement.

To achieve the purpose that solve the above problems 1, the present invention introduces a kind of boost type battery group working method, includes Battery module, DC-DC converter, the battery module monitor controller, battery module branch being made of cell batteries Charge controller, load capacitor, total monitor, it is characterised in that selection uses following working method:

(1) in battery module monitor controller, setting cell batteries discharge voltage limit value, cell batteries charging electricity Press limit value, cell batteries operating temperature limit value, battery module discharge current limit value；It is arranged simultaneously in total monitor Show vibration limit value, the impact limit value, location status limit value, movement speed limit value of battery module；And in chief inspector It surveys on device and shows each limit value；

(2) voltage battery parameter value, each monomer storage that battery module monitor controller acquires in real time, stores each cell batteries The charging current parameter value of battery and the discharge current parameter value of battery module, and shown on total monitor；Chief inspector The displacement parameter value that device acquired in real time, stored displacement sensor is surveyed, and displacement parameter value and timer time parameter values are carried out Statistical disposition obtains shock value, the impact value, location status value, movement speed value of current battery module, and in total monitor On shown；

(3) under the work closed state that discharges, total monitor stops all DC-DC by each battery module monitor controller The electric current input and output of all DC-DC converters are closed in the work of converter；

(4) when discharging working condition, the output voltage of each battery module is subjected to independent boosting by DC-DC converter Then the output electric current merging of each DC-DC converter is pooled on load capacitor by transformation；

(5) under working condition of discharging, battery module monitor controller is limited according to set battery module discharge current The discharge current parameter value of definite value and current each battery module of acquisition adjusts the corresponding connection of the battery module The working condition of DC-DC converter, so that the input current of the DC-DC converter is less than set battery module electric discharge electricity Ductility limit definite value；

(6) under working condition of discharging, if the current temperature value of some cell batteries has exceeded the cell batteries of setting The current voltage parameter value of operating temperature limit value or some cell batteries is lower than set cell batteries discharge voltage Limit value, the then corresponding DC- connected of battery module where battery module monitor controller closes the cell batteries The input and output electric current of DC converter；

(7) under working condition of discharging, if the shock value of current battery module, impact value, location status value, movement speed Value has exceeded the vibration limit value of set battery module, impact limit value, location status limit value, movement speed and limits Value, then battery module monitor controller closes the input and output electric current of all DC-DC converters；

(8) under working condition of discharging, battery module monitor controller according to the temperature acquisition parameters of each cell batteries, A part that the output electric current of each battery module is arranged is used to carry out temperature adjusting to the cell batteries, it may be assumed that refrigeration Or heating；

(9) under charging work state, battery module monitor controller according to the temperature acquisition parameters of each cell batteries, Battery module branch charge controller is arranged to be used to a part of charging input current carry out temperature to the cell batteries It adjusts, it may be assumed that refrigeration or heating；

(10) when each battery module is in charged state, charge independence is taken to each cell batteries therein, when The voltage battery parameter value of some cell batteries therein or the temperature parameter value of cell batteries exceed set monomer electric power storage When the allowed band of pond charging voltage limit value or cell batteries operating temperature limit value, then battery module branch charges Controller closes the charging current to the cell batteries.

The operation principle of the present invention is that: battery module, each DC-DC converter point are constituted using series connection cell batteries The other output voltage to each battery module carries out cocurrent output after being boosted, and has thus obtained output voltage and has been higher than The boost type battery group of each battery module, since DC-DC becomes between each battery module in electric discharge working condition The buffer action of parallel operation influences each other without having；The current voltage that each cell batteries are monitored in electric discharge work, when certain When the current voltage of a cell batteries is lower than set cell batteries discharge voltage limit value, that is, exceed cell batteries When the range of discharge voltage limit value, then DC-DC converter that the battery module where closing the cell batteries is connected Output, that is, the input and output electric current for the DC-DC converter that the battery module where closing the cell batteries is connected or The output electric current of battery module where the cell batteries, in this way it is avoided that the over-discharge electrical phenomena of each cell batteries, And the battery module that other, current voltage is in the place of each cell batteries of normal condition continues to discharge, and maintains The output services of boost type battery group；Under working condition of discharging, if the Current Temperatures parameter value of some cell batteries The cell batteries operating temperature limit value of setting or the current voltage parameter value of some cell batteries are had exceeded beyond set The cell batteries discharge voltage limit value set, then battery module monitor controller closes the electric power storage where the cell batteries The input and output electric current for the DC-DC converter that pond module is connected；That is, closing the electric current output of battery module, in this way It avoids because giving battery group bring deleterious effects under the influence of individual monomers battery environment temperature；In electric discharge work shape Under state, if the shock value of current battery module, impact value, location status value, movement speed value have exceeded set storage Vibration limit value, the impact limit value, location status limit value, movement speed limit value of battery module, then total monitor passes through All battery module monitor controllers close the input and output electric current of all DC-DC converters, or close in electric discharge work Under state, total monitor closes the input and output electric current of all DC-DC converters by each battery module monitor controller, That is: total monitor closes the transformation output services of all DC-DC converters by each battery module monitor controller, also phase When in the electric current output for closing all battery modules；Due to closing the input and output electric current of DC-DC converter as use The mode for stopping the work of DC-DC converter transformation is achieved, and after closing DC-DC converter, boost type battery group is no longer There is high voltage output, the inherent voltage in boost type battery group is the voltage of battery module, and in setting battery mould When block formula, the battery module of the output voltage of DC-DC converter is relatively lower than using output voltage, such as can using 12V or Safe voltage battery module below, therefore this boost type battery group is deposited without the hidden danger of intrinsic high pressure in the off state ?；Under charging work state, each cell batteries in each battery module are taken with the working method of charge independence, When the voltage parameter or temperature parameter of some cell batteries therein are limited beyond set cell batteries charging voltage When value or the allowed band of cell batteries operating temperature limit value, then storage battery charge controller is closed to the cell batteries Charging；When avoiding to charge to boost type battery group in this way, there is overcharge condition in individual monomers battery, into And avoid the phenomenon that boost type battery group reduces the service life.

In order to solve the above problem 2, the present invention also proposes a kind of boost type battery group module boosting cocurrent working method, makes Boost type battery group each battery module during discharge, real-time detection load current and each monomer electric power storage The current state in pond, and the discharge current of each battery module is adjusted according to the current state situation of each cell batteries, It may make the cell batteries in each battery module to be in relatively reasonable low current electric discharge working condition, extend each storage The discharge time of battery module can extend discharge time and the service life of battery group.

To achieve the purpose that solve the above problems 2, the present invention introduces a kind of boost type battery group module boosting cocurrent work Make method, include cell batteries, battery module, DC-DC converter, battery module monitor controller, total monitor, Load capacitor, it is characterised in that use following working method:

(1) in battery module monitor controller, each cell batteries nominal capacity value is set, cell batteries capacity declines Variable coefficient；

(2) total monitor and battery module monitor controller will be during the complete discharges of each battery module the last time Corresponding discharge current parameter was acquired, was stored each period, and according to: CLn=I1* △ t1+I2* △ t2+I1* △ t2 + ...+In* △ tm method statistic calculates, and obtains the total discharge capacity CLn of the nearest history of each battery module and is stored；

(3) total monitor and battery module monitor controller acquire in real time, store each battery module in this work of discharging The present discharge electricity of each period corresponding discharge current parameter, each cell batteries and battery module since making to start Flow the speed parameter of parameter, current displacement sensor；

(4) battery module monitor controller according to each battery module this electric discharge work start since each period Corresponding discharge current parameter is calculated equal to each period with the corresponding discharge current sum of products according to discharged capacity Discharged capacity of each battery module since this electric discharge work starts；I.e. according to Cln=I1n*tl1+I2n*tl2 + ... the method for+Imn*tlm has calculated discharged capacity Cln of each battery module since this electric discharge work starts；

(5) battery module monitor controller holds according to the total discharge capacity of nearest history, the cell batteries of each battery module It measures decay coefficient, cell batteries nominal capacity, correspond to battery module present discharge electric current and discharge capacity statistical value, according to Cn=rn*CLn-Cln method calculates the current capacities Cn of each battery module；

(6) have the cell batteries current capacities of minimum current capacities value as the battery mould using in each battery module The current reference capability value of block regard the sum of each battery module current reference capacity as current total capacity value, i.e., according to C= C1+C2+ ...+Cn calculates boost type battery group currently and can discharge the current total capacity value of battery module；By each electric power storage The electric discharge reference factor of the current reference capacity of pond module and the ratio of current total capacity as each battery module, that is, press According to: kn=Cn/C obtains the electric discharge reference factor kn of each battery module；

(7) total monitor and battery module monitor controller are according to each electric discharge reference factor and battery module output electric current Current battery module discharge current limit value Inm=kn*Inmax of the product of limit value as corresponding battery module, and It adjusts to correspond to according to the current block discharge current limit value of each battery module and adjusts DC-DC converter input current or defeated Electric current out so that the output electric current of each battery module be in zero to corresponding current block discharge current limit value Inm it Between.

The operation principle of the present invention is that: in the initial state, battery module monitor controller allows each battery mould Block according to initial current output is provided within the scope of the battery module electric discharge limit value of setting, supervise by total monitor and battery module It surveys controller and current parameters, each cell batteries current voltage parameter is exported by the current each battery module of detection, it can To calculate the current capacities of each cell batteries, to have the monomer electric power storage of minimum capacity in each battery module Current reference capacity of the pond as the battery module, by the sum of each battery module current reference capacity as current total appearance Amount, using the ratio of each battery module current reference capacity and current total capacity as reference factor of discharging, total monitor and Battery module monitor controller exports the product conduct of current limit value according to each electric discharge reference factor and battery module The current block discharge current limit value of corresponding battery module, and according to the current block discharge current of each battery module Limit value adjusts corresponding adjusting DC-DC converter input current or output electric current, so that the output electric current of each battery module In zero between current block discharge current limit value；In this way, allowing for the permission discharge current model of each battery module It enclosing and is adjusted by the limitation of the current reference capacity state of value of minimum cell batteries therein, current reference capability value is lower, Indicate that the cell batteries load capacity in the battery module is poorer, then the limitation by above-mentioned battery module output electric current is former Then, it is just relatively lower to allow to export electric current for battery module, conversely, current reference capability value height, indicates the battery module In cell batteries load capacities it is high, then by the limitation principle of above-mentioned battery module output electric current, output electric current can With relatively high；The electric discharge allowed band for allowing for each cell batteries in this way is to be adjusted according to its current capacities state , unreasonable heavy-current discharge state is avoided, the discharge time of each battery module is extended, battery can be extended The discharge time of group and service life.

In order to solve the above problem 3, the present invention also proposes a kind of boost type battery group residual capacity and running distance dynamic Monitoring method can be suitable for realizing dynamic to the residual capacity of boost type battery group and the remaining running distance of electric car Monitoring and display, and have the characteristics that practical, easy to implement.

To achieve the purpose that solve the above problems 3, the present invention also proposes a kind of boost type battery group socking out time And running distance monitoring method, it include cell batteries, battery module, DC-DC converter, battery module monitoring Controller, total monitor, displacement sensor, it is characterised in that selection uses following working method:

(2) total monitor and battery module monitor controller will be each in the complete discharge of each battery module the last time Period corresponding discharge current parameter acquired, store and according to: CLn=I1* △ t1+I2* △ t2+I1* △ t2+ ...+ In* △ tm statistics calculates, and obtains the total discharge capacity CLn of the nearest history of each battery module and is stored；

(4) battery module monitor controller according to each battery module this electric discharge work start since each period Corresponding discharge current parameter is calculated equal to each period with the corresponding discharge current sum of products according to discharged capacity Discharged capacity of each battery module since this electric discharge work starts；I.e. according to Cln=I1n*tl1+I2n*tl2 + ... the method for+Imn*tlm has calculated discharged capacity of each battery module since this electric discharge work starts；

(5) battery module monitor controller holds according to the total discharge capacity of nearest history, the cell batteries of each battery module It measures decay coefficient, cell batteries nominal capacity, correspond to battery module present discharge electric current and discharge capacity statistical value, according to Cn=rn*CLn-Cln method calculates the current capacities of each battery module；

(6) each battery module of each battery module under the present conditions is calculated according to the method for tn=Cn/In to remain Remaining discharge time, and by the battery module socking out time it is ascending be ranked up, obtain t1, t2, t3 ..., tn parameter；

(7) total monitor and battery module monitor controller be according to T1=t1, and Tn=[Cn-In* (T1+T2+ ...+Tn-1)]/ { In+ (I1+I2+ ...+In-1)/[N- (n-1)] } method statistic be calculated each battery module after discharge time T1, T2,T3,…,TN；+ TN the statistical calculation method using T=T1+T2+T3+ ... obtains the boost type battery group socking out time T, and the data are shown on total monitor；

(8) total monitor is calculated surplus according to current driving speed V and boost type battery group socking out time T Remaining running distance S, and the parameter is shown on total monitor.

The operation principle of the present invention is that: in view of the composition feature of boost type battery group, because in boost type battery group Each battery module electric discharge and close as current state depending on each cell batteries therein, when an electric power storage Pond module is closed after electric discharge, and the discharge current which undertakes will be in the battery of discharge condition by other Module continues to undertake, and before a battery module is closed, other battery modules are also also being constantly in electric discharge shape Therefore state, i.e. consumption part electricity use real-time monitoring related the monitoring of the remaining generating dutation of boost type battery group Parameter, and counted stage by stage according to the relevant parameter of each acquisition, the nominal capacity of setting, limit value and history discharge capacity The socking out time is calculated, is finally collected；It that is:, will be each according to the current voltage of collected each cell batteries Minimum cell batteries present discharge voltage in module as reference value, corresponding battery module present discharge current parameters, Referring to the capacity under corresponding battery module discharge time in the past and the nearest static conditions of discharge current statistical value, cell batteries Value, cell batteries nominal capacity, i.e., the statistics available battery module of each battery module under the present conditions that calculates remain Remaining discharge time, and by the battery module socking out time it is ascending be ranked up, obtain t1, t2, t3 ..., tn parameter； According to T1=t1, Tn=[Cn-In* (T1+T2+ ...+Tn-1)]/{ In+ (I1+I2+ ...+In-1)/[N- (n-1)] } method statistic Be calculated after discharge time T1, T2 of each battery module, T3 ..., TN；Using T=T1+T2+T3+ ... ,+TN is counted Calculation method obtains boost type battery group socking out time T, and the data is shown on total monitor；According to Current driving speed V and boost type battery group socking out time T, is calculated remaining running distance S, and by the ginseng Number is shown on total monitor；Thereby realize the residual capacity and electricity of present invention boost type battery group achieved The remaining running distance of electrical automobile realizes the purpose of dynamic monitoring.

In order to solve the above problem 4, the present invention also proposes a kind of boost type battery group module method for obligating, can be suitable for The battery module application management of boost type battery group, the meaning for avoiding the Vehicular accumulator cell of electric car from occurring by capacity problem Outer parking phenomenon, and have the characteristics that practical, easy to implement.

To achieve the purpose that solve the above problems 4, the present invention introduces a kind of boost type battery group module method for obligating, packet Containing cell batteries, battery module, DC-DC converter, battery module monitor controller, total monitor, feature exists Following working method is used in selection:

(3) total monitor and battery module monitor controller are by each cell batteries in each battery module nearest Corresponding discharge current parameter was acquired, was stored and according to COn=IO1* each period in primary complete charging process △ tO1+IO2* △ tO2+IO1* △ tO2+ ...+IOm* △ tOm statistics calculates, and show that the nearest history of each battery module is total Charge volume COn parameter value is simultaneously stored；

(4) total monitor and battery module monitor controller are by the cell batteries capacity decay series of each battery module The total charge volume ginseng of nearest history of the total discharge capacity parameter value of the nearest history of several, each battery module, each battery module Numerical value is compared, and obtains best battery module state sequencing table；Total monitor and battery module monitor controller will be located Multiple best battery modules in battery module state sequencing table forefront are set as reserved battery module；

(5) total monitor and battery module monitor controller acquire in real time, store each battery module in electric discharge work The present discharge current parameters of corresponding discharge current parameter, each cell batteries and battery module；

(6) be in electric discharge preliminary work in boost type battery group, total monitor and battery module monitor controller close with The input and output electric current of the reserved relevant DC-DC converter of battery module, so that reserved battery module is in without output electricity Stream mode, and by total monitor monitor and show the working condition of each battery module；In the electric discharge of other battery modules After current-termination, then by the relevant DC-DC converter unlatching input and output electric current of reserved battery module, so that reserved battery Module is in electric discharge working condition, and the working condition and alarm of each battery module are shown on total monitor.

The operation principle of the present invention is that: composition feature and redundancy setting in view of boost type battery group, therefore boost type It the electric discharges of certain several battery module in battery group and closes on the electric discharge work of entire boost type battery group without influence, Therefore can be in the last battery module charging and discharging monitoring, wherein the preferable battery module of state is made for selection For last Emergency use, then other most of battery module power consumptions in boost type battery group finish and closes discharge it is defeated Out after electric current, is discharged and alerted by the preferably multiple battery module interventions of reserve in advance, state, it is electronic to ensure Automobile can also reach nearest processing place after alarm signal appearance.

Above-mentioned each working method, the present invention also introduce a kind of boost type battery group, contain to realize the present invention There are multiple constituted battery modules of being connected by cell batteries, it is characterised in that there are multiple battery module branch charging controls Device processed, multiple DC-DC converters, multiple battery module monitor controllers, total monitor, load capacitor, one A displacement sensor；Each cell batteries has a temperature sensor；There is an input electricity in each DC-DC converter Flow sensor, an output current sensor；The current output terminal of each battery module and a DC-DC converter input End is connected, each DC-DC converter output end is connected with load capacitor；The charging of each battery module branch Controller has a multipair charge independence output end, every a pair of of charge independence output end of the same battery module charger respectively with A cell batteries in the same battery module are in parallel；Temperature sensor, input current sensor, output electric current pass Each data output end of sensor is connected with the data of battery module monitor controller acquisition input terminal respectively, each DC- The working condition switch control terminal of DC converter, input current adjustable side respectively with corresponding battery module monitor controller control Output end processed is connected, one group of signal input of the parameter output of displacement sensor, each battery module monitor controller Output end, one group of signal input output end of battery module branch charge controller are defeated with the monitoring signal of total monitor respectively Enter output end to be connected.

Detailed description of the invention

Fig. 1 is that the boost type battery group of one embodiment of the invention constitutes electrical schematic diagram；

Fig. 2 is the composition electrical schematic diagram of the battery module branch charge controller of one embodiment of the invention；

Fig. 3 is the battery module composition figure of one embodiment of the invention；

Fig. 4 is the composition electrical schematic diagram of one embodiment of the invention DC-DC converter；

Fig. 5 is the work flow diagram of one embodiment of the invention boost type battery group working method；

Fig. 6 is the work flow diagram of one embodiment of the invention boost type battery group module boosting cocurrent working method；

Fig. 7 is the work of one embodiment of the invention boost type battery group socking out time and running distance monitoring method Flow chart；

Fig. 8 is the work flow diagram of one embodiment of the invention boost type battery group module method for obligating；

In Fig. 1, Fig. 2, Fig. 3 and Fig. 4, for the component with same function in the drawings using being identically numbered come table Show, excessively brings confusion to avoid number.

Specific embodiment

Illustrate the embodiment of the present invention by taking attached drawing as an example below:

Fig. 1 is that the boost type battery group of one embodiment of the invention constitutes electrical schematic diagram, in which:

A is battery module branch charge controller；B is battery module, the structure using the series connection of multiple conventional monomeric batteries At；C is DC-DC converter, and circuit principle of compositionality is detailed in shown in attached drawing 2；D is load capacitor, using large capacity electricity Container and pressure resistance match with DC-DC converter output voltage；E is battery module monitor controller, using with number It is constituted according to the microprocessor system of acquisition interface；F is total monitor, using the microprocessor with data acquisition interface and display It constitutes；Each charging output end of each battery module branch charge controller respectively with cell batteries mutually simultaneously It connects；The current output terminal of each battery module is connected with the low-tension current input terminal of a DC-DC converter, all The high-tension current output end of DC-DC converter is all connected with load capacitance, the output voltage terminal of each cell batteries, output Current sensor output end, temperature sensor output signal end, displacement sensor output signal end all respectively with battery The signal acquisition input terminal of module monitors controller and total monitor is connected, the operating switch control terminal of DC-DC converter and Output current regulation control end is connected with the control output end of battery module monitor controller respectively；

Fig. 2 is the composition electrical schematic diagram of the battery module branch charge controller of one embodiment of the invention, in which:

A is battery module branch charge controller, and A1, A2, A3, A4, An are module charging output end；H1,H2,H3,..,Hn For cell batteries charging current sensor, G is multi-channel charger, G1-G1 ' therein, G2-G2 ', G3-G3 ' ..., Gn- It Gn ', is charging output end independent, so-called charge independence output end, i.e., each charging output electric current to charging output end And voltage is respectively to carry out charging adjusting according to the state of the charging load of oneself, does not generate and influences each other；I adopts for charging current Collect signal output port；Internal connection relationship as shown, wherein G1, G2, G3 ..., Gn pass through respectively after current sensor with A1, A2, A3, A4, An module charging output end are connected；G1 ', G2 ', G3 ' ..., Gn ' fills with A2, A3, A4, An module respectively Electricity output end is connected；I is connected with the data acquisition signal input terminal of battery module monitor controller E；

Fig. 3 is the battery module composition figure of one embodiment of the invention, in which:

B1, B2, B3 ..., Bn be form battery module cell batteries, which may be multiple low capacity The large capacity single accumulator body that is formed in parallel of cell batteries；The end voltage output end and battery mould of each cell batteries The data acquisition signal input terminal of block monitor controller E is connected；A1, A2 of battery module branch charge controller A, A3, A4, An are that module charging output end is connected with the positive and negative anodes of each cell batteries of battery module respectively；

Fig. 4 is the composition electrical schematic diagram of one embodiment of the invention DC-DC converter, in which:

C is DC-DC converter, and C1 is input current sensor, and C2 is DC-DC DC booster converter, and C3 is that output electric current passes Sensor, input current sensor, DC-DC DC booster converter, output current sensor are connected in series with each other；Each electric current passes Sensor signal output end, DC-DC DC converter operating switch control terminal and output current regulation end respectively with battery module The data acquisition signal input terminal or control signal output of monitor controller E is connected；

According to component shown in attached drawing 1, Fig. 2, Fig. 3 and Fig. 4 and module composition and connection relationship, and the illustratively installation and company Boost type storage of the invention can be completed in jointing temp sensor, displacement sensor, the interconnection for completing modules and device Battery pack；

Fig. 5 is the work flow diagram of one embodiment of the invention boost type battery group working method；Wherein:

To each battery module monitor controller, the battery module branch charge controller in above-mentioned boost type battery group And total monitor can be realized boost type battery group working method of the invention according to following process authorized strength work softwares and implement Example:

(1) system initialization carries out system initialization to the microprocessor in total monitor and battery module monitor controller；

(2) in battery module monitor controller, setting cell batteries discharge voltage limit value, cell batteries charging electricity Press limit value, cell batteries operating temperature limit value, battery module discharge current limit value；It is arranged simultaneously in total monitor Show vibration limit value, the impact limit value, location status limit value, movement speed limit value of battery module；And in chief inspector It surveys on device and shows each limit value；

(3) voltage battery parameter value, each monomer storage that battery module monitor controller acquires in real time, stores each cell batteries The charging current parameter value of battery and the discharge current parameter value of battery module, and shown on total monitor；Chief inspector The displacement parameter value that device acquired in real time, stored displacement sensor is surveyed, and displacement parameter value and timer time parameter values are carried out Statistical disposition obtains shock value, the impact value, location status value, movement speed value of current battery module, and in total monitor On shown；

(4) under the work closed state that discharges, total monitor stops all DC-DC by each battery module monitor controller The electric current input and output of all DC-DC converters are closed in the work of converter；

(5) when discharging working condition, the output voltage of each battery module is subjected to independent boosting by DC-DC converter Then the output electric current merging of each DC-DC converter is pooled on load capacitor by transformation；

(6) under working condition of discharging, battery module monitor controller is limited according to set battery module discharge current The discharge current parameter value of definite value and current each battery module of acquisition adjusts the corresponding connection of the battery module The working condition of DC-DC converter, so that the input current of the DC-DC converter is less than set battery module electric discharge electricity Ductility limit definite value；

(7) under working condition of discharging, if the current temperature value of some cell batteries has exceeded the cell batteries of setting The current voltage parameter value of operating temperature limit value or some cell batteries is lower than set cell batteries discharge voltage Limit value, the then corresponding DC- connected of battery module where battery module monitor controller closes the cell batteries The input and output electric current of DC converter；

(8) under working condition of discharging, if the shock value of current battery module, impact value, location status value, movement speed Value has exceeded the vibration limit value of set battery module, impact limit value, location status limit value, movement speed and limits Value, then battery module monitor controller closes the input and output electric current of all DC-DC converters；

(9) under working condition of discharging, battery module monitor controller according to the temperature acquisition parameters of each cell batteries, A part that the output electric current of each battery module is arranged is used to carry out temperature adjusting to the cell batteries, it may be assumed that refrigeration Or heating；

(10) under charging work state, battery module monitor controller is joined according to the temperature acquisition of each cell batteries A part of charging input current is used to carry out temperature to the cell batteries by number, setting battery module branch charge controller Degree is adjusted, it may be assumed that refrigeration or heating；

(11) when each battery module is in charged state, charge independence is taken to each cell batteries therein, when The voltage battery parameter value of some cell batteries therein or the temperature parameter value of cell batteries exceed set monomer electric power storage When the allowed band of pond charging voltage limit value or cell batteries operating temperature limit value, then battery module branch charges Controller closes the charging current to the cell batteries；

(12) above-mentioned steps (3) are returned to；

Fig. 6 is the work flow diagram of one embodiment of the invention boost type battery group module boosting cocurrent working method；Wherein:

To in above-mentioned boost type battery group each battery module monitor controller and total monitor compile according to following processes Boost type battery group module boosting cocurrent working method embodiment of the invention can be realized in working software processed:

(2) in battery module monitor controller, each cell batteries nominal capacity value is set, cell batteries capacity declines Variable coefficient；

(3) total monitor and battery module monitor controller will be during the complete discharges of each battery module the last time Corresponding discharge current parameter was acquired, was stored each period, and according to: CLn=I1* △ t1+I2* △ t2+I1* △ t2 + ...+In* △ tm method statistic calculates, and obtains the total discharge capacity CLn of the nearest history of each battery module and is stored；

(4) total monitor and battery module monitor controller acquire in real time, store each battery module in this work of discharging The present discharge electricity of each period corresponding discharge current parameter, each cell batteries and battery module since making to start Flow the speed parameter of parameter, current displacement sensor；

(5) battery module monitor controller according to each battery module this electric discharge work start since each period Corresponding discharge current parameter is calculated equal to each period with the corresponding discharge current sum of products according to discharged capacity Discharged capacity of each battery module since this electric discharge work starts；I.e. according to Cln=I1n*tl1+I2n*tl2 + ... the method for+Imn*tlm has calculated discharged capacity Cln of each battery module since this electric discharge work starts；

(6) battery module monitor controller holds according to the total discharge capacity of nearest history, the cell batteries of each battery module It measures decay coefficient, cell batteries nominal capacity, correspond to battery module present discharge electric current and discharge capacity statistical value, according to Cn=rn*CLn-Cln method calculates the current capacities Cn of each battery module；

(7) have the cell batteries current capacities of minimum current capacities value as the battery mould using in each battery module The current reference capability value of block regard the sum of each battery module current reference capacity as current total capacity value, i.e., according to C= C1+C2+ ...+Cn calculates boost type battery group currently and can discharge the current total capacity value of battery module；By each electric power storage The electric discharge reference factor of the current reference capacity of pond module and the ratio of current total capacity as each battery module, that is, press According to: kn=Cn/C obtains the electric discharge reference factor kn of each battery module；

(8) total monitor and battery module monitor controller are according to each electric discharge reference factor and battery module output electric current Current battery module discharge current limit value Inm=kn*Inmax of the product of limit value as corresponding battery module, and It adjusts to correspond to according to the current block discharge current limit value of each battery module and adjusts DC-DC converter input current or defeated Electric current out so that the output electric current of each battery module be in zero to corresponding current block discharge current limit value Inm it Between；

(9) above-mentioned steps (3) are returned to；

Fig. 7 is the work of one embodiment of the invention boost type battery group socking out time and running distance monitoring method Flow chart；Wherein:

To in above-mentioned boost type battery group each battery module monitor controller and total monitor compile according to following processes It is real that boost type battery group socking out time and running distance monitoring method of the invention can be realized in working software processed Apply example:

(2) each cell batteries nominal capacity value, cell batteries capacity decay coefficient are set；

(3) it is corresponding to acquire, store and count each period in the complete discharge for calculating each battery module the last time Discharge current parameter, according to: each electric power storage is calculated in CLn=I1* △ t1+I2* △ t2+I1* △ t2+ ...+In* △ tm The total discharge capacity CLn of the nearest history of pond module is simultaneously stored；

(4) it acquires, stored each battery module each period corresponding discharge current since this electric discharge work starts The speed parameter of the present discharge current parameters of parameter, each cell batteries and battery module, current displacement sensor；

(5) according to each battery module since this electric discharge work starts each period corresponding discharge current parameter, Each battery module is calculated at this with the corresponding discharge current sum of products equal to each period according to discharged capacity It is secondary electric discharge work start since discharged capacity；The method meter of+Imn*tlm i.e. according to Cln=I1n*tl1+I2n*tl2+ ... Discharged capacity Cln of each battery module since this electric discharge work starts is calculated；

(6) according to the total discharge capacity of nearest history of each battery module, cell batteries capacity decay coefficient, cell batteries Nominal capacity corresponds to battery module present discharge electric current and discharge capacity statistical value, calculates according to the method for tn=Cnt/Int The each battery module socking out time of each battery module under the present conditions out, and battery module residue is put The electric time is ascending to be ranked up, obtain t1, t2, t3 ..., tn parameter；

(7) according to T1=t1, Tn=[Cn-In* (T1+T2+ ...+Tn-1)]/{ In+ (I1+I2+ ...+In-1)/[N- (n-1)] } Method statistic be calculated after discharge time T1, T2 of each battery module, T3 ..., TN；Using T=T1+T2+T3+ ... + TN statistical calculation method obtains boost type battery group socking out time T；

(8) it according to current driving speed V and boost type battery group socking out time T, is calculated according to S=V*T method Remaining running distance S；

(9) by boost type battery group socking out time T parameter, current driving speed V parameter, remaining running distance S parameter It is shown on total monitor；

(10) above-mentioned steps (3) are returned to.

Fig. 8 is the work flow diagram of one embodiment of the invention boost type battery group module method for obligating；Wherein:

To in above-mentioned boost type battery group each battery module monitor controller and total monitor compile according to following processes Boost type battery group module method for obligating embodiment of the invention can be realized in working software processed:

(3) total monitor and battery module monitor controller will be each in the complete discharge of each battery module the last time Period corresponding discharge current parameter acquired, store and according to: CLn=I1* △ t1+I2* △ t2+I1* △ t2+ ...+ In* △ tm statistics calculates, and obtains the total discharge capacity CLn of the nearest history of each battery module and is stored；

(4) total monitor and battery module monitor controller are by each cell batteries in each battery module nearest Corresponding discharge current parameter was acquired, was stored and according to COn=IO1* each period in primary complete charging process △ tO1+IO2* △ tO2+IO1* △ tO2+ ...+IOm* △ tOm statistics calculates, and show that the nearest history of each battery module is total Charge volume COn parameter value is simultaneously stored；

(5) total monitor and battery module monitor controller are by the cell batteries capacity decay series of each battery module The total charge volume ginseng of nearest history of the total discharge capacity parameter value of the nearest history of several, each battery module, each battery module Numerical value is compared, according to the total charge volume parameter of nearest history of the total discharge capacity parameter value of nearest history, each battery module It is worth the more excellent principle of bigger value, obtains best battery module state sequencing table；Total monitor and battery module monitoring control Multiple best battery modules in battery module state sequencing table forefront are set reserved battery module by device processed；

(6) total monitor and battery module monitor controller acquire in real time, store each battery module in electric discharge work The present discharge current parameters of corresponding discharge current parameter, each cell batteries and battery module；

(7) be in electric discharge preliminary work in boost type battery group, total monitor and battery module monitor controller close with The input and output electric current of the reserved relevant DC-DC converter of battery module, so that reserved battery module is in without output electricity Stream mode, and show by total monitor the working condition of each battery module；

(8) after the discharge current of other battery modules terminates, then the relevant DC-DC converter of reserved battery module opened Input and output electric current is opened, so that reserved battery module is in electric discharge working condition, and shows each electric power storage on total monitor The working condition and alarm of pond module；

(9) above-mentioned steps (3) are returned to.

This completes whole embodiments of the invention.

Boost type battery group module boosting cocurrent working method of the present invention, can also be that selection uses following work Make method:

(1) in battery module monitor controller, setting cell batteries highest discharge voltage value, cell batteries electric discharge electricity Minimum, battery module is pressed to export current limit value；

(2) total monitor and battery module monitor controller acquire in real time, store each cell batteries and battery module Current voltage parameter, the discharge current parameter of each battery module, and according to each of the parameters of acquisition and setting It limits Data-Statistics and cell batteries maximum discharge voltage difference (that is: cell batteries highest discharge voltage value and list is calculated Accumulator body discharge voltage minimum difference DELTA V=Vmax-Vmin), cell batteries present discharge voltage difference (that is: monomer The current voltage parameter of battery and the difference DELTA Vn=Vn-Vmin of cell batteries discharge voltage minimum)；

(3) to have the present discharge voltage difference of the cell batteries of minimum present discharge voltage difference in each battery module It is worth the current reference discharge voltage difference as the battery module, the current reference discharge voltage of each battery module is poor Electric discharge reference factor of the ratio of value and cell batteries maximum discharge voltage difference as each battery module, it may be assumed that kn= ΔVn/ΔV；

(4) total monitor and battery module monitor controller are according to each electric discharge reference factor and battery module output electric current Current battery module discharge current limit value Inm=kn*Inmax of the product of limit value as corresponding battery module, and It adjusts to correspond to according to the current block discharge current limit value of each battery module and adjusts DC-DC converter input current or defeated Electric current out so that the output electric current of each battery module be in zero to corresponding current block discharge current limit value Inm it Between.

Doing so can make boost type battery group module boosting cocurrent working method of the invention more simple, be easy to Implement.

Invention describes it is a kind of by it is multiple by cell batteries connect constituted battery modules, load capacitor, DC-DC converter, battery module branch charge controller, battery module monitor controller, total monitor, displacement sensing Boost type battery group composed by device, temperature sensor realizes a variety of working methods of boost type battery group, so that structure At boost type battery group in each battery module can in charge and discharge process it is mutually isolated and work independently, can Battery module influencing each other after in groups is avoided, the excessive charge and discharge of cell batteries therein is avoided, avoids battery Intrinsic high-pressure phenomena in group；So that boost type high tension battery group each battery module during discharge, in real time The current state of load current and each cell batteries is detected, and is adjusted according to the current state situation of each cell batteries The discharge current of each battery module may make the cell batteries in each battery module to be in relatively reasonable low electricity Electric working condition is banished, the discharge time of each battery module is extended, discharge time and the use of battery group can be extended Service life；It can be suitable for realizing dynamic monitoring to the residual capacity of boost type battery group and the remaining running distance of electric car And display, battery module application to boost type battery group can be suitable for, avoid the Vehicular accumulator cell of electric car because The involuntary stoppage phenomenon that capacity problem occurs；It improves battery life and application is safe, and there is practical, embodiment party Just the characteristics of.

Claims

1. a kind of boost type battery group working method includes the battery module being made of cell batteries, DC-DC transformation Device, battery module monitor controller, battery module branch charge controller, load capacitor, total monitor, feature exist Following working method is used in selection:

(1) in battery module monitor controller, setting cell batteries discharge voltage limit value, cell batteries charging electricity Press limit value, cell batteries operating temperature limit value, battery module discharge current limit value；

(2) it is arranged and shows that the vibration limit value of battery module, impact limit value, location status limit in total monitor Value, movement speed limit value；And each limit value is shown on total monitor；

(3) voltage battery parameter value, each monomer storage that battery module monitor controller acquires in real time, stores each cell batteries The charging current parameter value of battery and the discharge current parameter value of battery module, and shown on total monitor；

(4) total monitor acquires in real time, stores the displacement parameter value of displacement sensor, and by displacement parameter value and timer time Parameter value carries out statistical disposition, obtains shock value, the impact value, location status value, movement speed value of current battery module, and It is shown on total monitor；

(5) under the work closed state that discharges, total monitor stops all DC-DC by each battery module monitor controller The electric current input and output of all DC-DC converters are closed in the work of converter；

When discharging working condition, the output voltage of each battery module is subjected to independent boosting by DC-DC converter and is become It changes, then the output electric current merging of each DC-DC converter is pooled on load capacitor；

Under working condition of discharging, battery module monitor controller according to the temperature acquisition parameters of each cell batteries, if Set each battery module output electric current a part be used for the cell batteries carry out temperature adjusting, it may be assumed that refrigeration or Heating；

Under charging work state, battery module monitor controller according to the temperature acquisition parameters of each cell batteries, if Electric power storage (9) pond module branch charge controller is set to be used to a part of charging input current carry out temperature to the cell batteries It adjusts, it may be assumed that refrigeration or heating；

The cocurrent working method 2. a kind of boost type battery group module is boosted, includes the battery mould being made of cell batteries Block, DC-DC converter, battery module monitor controller, battery module branch charge controller, load capacitor, chief inspector Survey device, it is characterised in that selection uses following working method:

(4) battery module monitor controller according to each battery module this electric discharge work start since each period Corresponding discharge current parameter is calculated equal to each period with the corresponding discharge current sum of products according to discharged capacity Discharged capacity of each battery module since this electric discharge work starts, i.e., according to Cln=I1n*tl1+I2n*tl2 + ... the method for+Imn*tlm has calculated discharged capacity Cln of each battery module since this electric discharge work starts；

The cocurrent working method 3. a kind of boost type battery group module as claimed in claim 2 is boosted, includes to be stored by monomer The battery module of battery composition, DC-DC converter, battery module monitor controller, battery module branch charge control Device, load capacitor, total monitor, it is characterised in that selection uses following working method:

4. a kind of boost type battery group socking out time and running distance monitoring method, include cell batteries, Battery module, DC-DC converter, battery module monitor controller, total monitor, displacement sensor, it is characterised in that choosing It selects using following working method:

5. a kind of boost type battery group module method for obligating, include cell batteries, battery module, DC-DC converter, Battery module monitor controller, total monitor, it is characterised in that selection uses following working method:

6. a kind of boost type electric power storage for the boost type battery group working method as described in claims 1 or 2 or 3 or 4 or 5 Pond group contains multiple constituted battery modules of being connected by cell batteries, it is characterised in that have multiple battery modules point Road charge controller, multiple DC-DC converters, multiple battery module monitor controllers, a total monitor, a load electricity Container, a displacement sensor；Each cell batteries has a temperature sensor；Have one in each DC-DC converter A input current sensor, an output current sensor；The current output terminal of each battery module and a DC-DC become Parallel operation input terminal is connected, each DC-DC converter output end is connected with load capacitor；Each battery module Branch charge controller has multipair charge independence output end, every a pair of of charge independence output of the same battery module charger End is in parallel with a cell batteries in the same battery module respectively；It is temperature sensor, input current sensor, defeated Each data output end of current sensor is connected with the data of battery module monitor controller acquisition input terminal respectively out, The working condition switch control terminal of each DC-DC converter, input current adjustable side are monitored with corresponding battery module respectively Controller control output end is connected, and one group of the parameter output of displacement sensor, each battery module monitor controller One group of signal input output end prison with total monitor respectively of signal input output end, battery module branch charge controller Control signal input output end is connected.