CN109747482A - A kind of operation method and running gear of Vehicular dynamic battery group - Google Patents
A kind of operation method and running gear of Vehicular dynamic battery group Download PDFInfo
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- CN109747482A CN109747482A CN201910106256.3A CN201910106256A CN109747482A CN 109747482 A CN109747482 A CN 109747482A CN 201910106256 A CN201910106256 A CN 201910106256A CN 109747482 A CN109747482 A CN 109747482A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
Embodiment of the present invention discloses the operation method and running gear of a kind of Vehicular dynamic battery group.It include: that reserce cell group unit and (N-1) a working battery group unit are determined from N number of battery assembly module, enabled reserce cell group unit enters stand-by state, and (N-1) a working battery group unit enters working condition；The battery health degree of each working battery group unit in (N-1) a working battery group unit is calculated, and determines the inconsistency health degree of (N-1) a working battery group unit；When the increment of the inconsistency health degree of (N-1) a working battery group unit, which is greater than the minimum battery health degree in predetermined threshold and (N-1) a working battery group unit, spends lower than the battery health of reserce cell group unit, reserce cell group unit is updated to working battery group unit and enters working condition, the battery assembly module of minimum battery health degree is updated to reserce cell group unit and enters stand-by state.Improve the service life of Vehicular dynamic battery group.
Description
Technical field
Embodiment of the present invention is related to electric vehicle engineering field, in particular to a kind of operation side of Vehicular dynamic battery group
Method and running gear.
Background technique
Have in national newest standards " term and definition of automobile and trailer type " (GB/T 3730.1-2001) to automobile
Such as give a definition: by power drive, the vehicle of the non-track carrying with 4 or 4 or more wheels is mainly used for: carrying personnel
And (or) cargo；Draw the vehicle of carrying personnel and (or) cargo；Specific use.Energy shortage, oil crisis and environmental pollution
It grows in intensity, brings tremendous influence to people's lives, be directly related to the sustainable development of national economy and society.The world is each
State is all in active development new energy technology.
Electric car is as a kind of new-energy automobile for reducing consumption of petroleum, low pollution, low noise, it is considered to be solves energy
The important channel of source crisis and environmental degradation.
The active volume and battery life of the Vehicular dynamic battery group of electric car are closely bound up.With the use of battery,
Battery capacity reduces, and the service life reduces.Vehicular dynamic battery group (such as Li-ion batteries piles) onboard usually have first and after go here and there
Type of attachment, to meet the voltage requirements and current needs of vehicle.
However, since there are inconsistencies for performance in the fabrication process for the battery of same type, specification, with making for battery
With the difference of condition, this inconsistency can be gradually expanded.Similar to wooden pail effect, performance is worst in Vehicular dynamic battery group
Battery assembly module generally determines the service life of battery pack.
Currently, the service life for how improving Vehicular dynamic battery group is a problem to be resolved.
Summary of the invention
In view of this, the object of the present invention is to provide the operation methods and running gear of a kind of Vehicular dynamic battery group.
The technical solution of embodiment of the present invention is as follows:
A kind of operation method of Vehicular dynamic battery group, the Vehicular dynamic battery group include N number of battery being serially connected
Group unit, wherein N is the positive integer for being at least 2, this method comprises:
Reserce cell group unit and (N-1) a working battery group unit are determined from N number of battery assembly module, are enabled
The reserce cell group unit enters stand-by state, and (N-1) a working battery group unit enters working condition；
The battery health degree of each working battery group unit in (N-1) described in calculating a working battery group unit, and be based on
The inconsistency health of (N-1) a working battery group unit described in the battery health degree of each working battery group unit is determining
Degree；
When the increment of the inconsistency health degree of (N-1) a working battery group unit is greater than predetermined threshold and described
(N-1) when the minimum battery health degree in a working battery group unit is spent lower than the battery health of reserce cell group unit, by institute
It states reserce cell group unit to be updated to working battery group unit and enter working condition, by the battery of the minimum battery health degree
Group unit is updated to reserce cell group unit and enters stand-by state.
In one embodiment, described that reserce cell group unit and (N-1) a work are determined from N number of battery assembly module
Include: as battery assembly module
Operation is completely filled into power battery pack execution comprising the N number of battery assembly module for being in working condition；
The minimum battery assembly module of battery health degree is determined as by the battery health degree for calculating N number of battery assembly module
Battery assembly module other than the minimum battery assembly module of the battery health degree is determined as work by reserce cell group unit
Battery assembly module.
In one embodiment, the battery assembly module includes m single batteries parallel with one another, and wherein m is at least
For 2 positive integer；Or
The battery assembly module includes the q single battery groups being serially connected, wherein each single battery group includes p phase
Mutually single battery in parallel, p are the positive integer for being at least 2, and q is the positive integer for being at least 2.
In one embodiment, described to calculate each working battery group unit in (N-1) a working battery group unit
Battery health degree are as follows: when (N-1) a working battery group unit is in first and completely fills the moment, (N-1) a work described in calculating
Make the battery health degree of each working battery group unit in battery assembly module；
The increment of the inconsistency health degree of (N-1) a working battery group unit is greater than predetermined threshold are as follows: described
(N-1) inconsistency health degree of a working battery group unit when first completely fills the moment, with (N-1) a working battery group
Unit described first completely fill upper the one of the moment completely fill the moment when inconsistency health degree between difference, be greater than predetermined threshold
Value.
In one embodiment, this method further include:
The reserce cell group unit is updated to (N-1) a working battery group unit after working battery group unit by calculating
In each working battery group unit battery health degree, and working battery group unit is updated to based on the reserce cell group unit
The battery health degree of each working battery group unit in a working battery group unit of (N-1) afterwards determines described by backup again
Battery assembly module is updated to the inconsistency health degree of (N-1) a working battery group unit after working battery group unit；
When the increment of the inconsistency health degree of described (N-1) a working battery group unit determined again is greater than predetermined door
Limit value and the minimum electricity being updated to reserce cell group unit in (N-1) a working battery group unit after working battery group unit
When pond health degree is spent lower than the battery health of reserce cell group unit, the battery assembly module of minimum battery health degree is updated to standby
Part battery assembly module simultaneously enters stand-by state, the reserce cell group unit is updated to working battery group unit and enters work
The battery assembly module of the minimum battery health degree is updated to reserce cell group unit and enters stand-by state by state.
A kind of running gear of Vehicular dynamic battery group, the Vehicular dynamic battery group include N number of battery being serially connected
Group unit, wherein N is the positive integer for being at least 2, which includes:
Determining module, for determining reserce cell group unit and (N-1) a work electricity from N number of battery assembly module
Pond group unit enables the reserce cell group unit and enters stand-by state, and (N-1) a working battery group unit enters work
State；
Inconsistency health degree determining module, for calculating each work electricity in described (N-1) a working battery group unit
The battery health degree of pond group unit, and it is a based on (N-1) described in the determination of the battery health degree of each working battery group unit
The inconsistency health degree of working battery group unit；
Update module, the increment for the inconsistency health degree when described (N-1) a working battery group unit are greater than pre-
Determine the battery that the minimum battery health degree in threshold value and (N-1) a working battery group unit is lower than reserce cell group unit
When health degree, the reserce cell group unit is updated to working battery group unit and enters working condition, by the minimum electricity
The battery assembly module of pond health degree is updated to reserce cell group unit and enters stand-by state.
In one embodiment, determining module, for will include be in working condition N number of battery assembly module it is dynamic
Operation is completely filled in the execution of power battery pack；The battery health degree for calculating N number of battery assembly module, by the battery that battery health degree is minimum
Group unit is determined as reserce cell group unit, by the battery pack list other than the minimum battery assembly module of the battery health degree
Member is determined as working battery group unit.
In one embodiment, the battery assembly module includes m single batteries parallel with one another, and wherein m is at least
For 2 positive integer；Or
The battery assembly module includes the q single battery groups being serially connected, wherein each single battery group includes p phase
Mutually single battery in parallel, p are the positive integer for being at least 2, and q is the positive integer for being at least 2.
In one embodiment, inconsistency health degree determining module, in (N-1) a working battery group list
Member in first completely fill the moment when, the battery of each working battery group unit in (N-1) a working battery group unit described in calculating
Health degree；
Wherein the increment of the inconsistency health degree of described (N-1) a working battery group unit is greater than predetermined threshold are as follows:
Inconsistency health degree of (N-1) a working battery group unit when first completely fills the moment, with (N-1) a work electricity
Pond group unit described first completely fill upper the one of the moment completely fill the moment when inconsistency health degree between difference, be greater than predetermined
Threshold value.
In one embodiment, update module is also used to calculating for the reserce cell group unit and is updated to work electricity
The battery health degree of each working battery group unit in (N-1) a working battery group unit after the group unit of pond, and based on described
Reserce cell group unit is updated to each working battery group list in (N-1) a working battery group unit after working battery group unit
The battery health degree of member determines (N-1) after reserce cell group unit to be updated to working battery group unit a work electricity again
The inconsistency health degree of pond group unit；When the inconsistency health of described (N-1) a working battery group unit determined again
(N-1) a work electricity that the increment of degree is greater than predetermined threshold and is updated to reserce cell group unit after working battery group unit
When minimum battery health degree in the group unit of pond is spent lower than the battery health of reserce cell group unit, by minimum battery health degree
Battery assembly module is updated to reserce cell group unit and enters stand-by state, and the reserce cell group unit is updated to work electricity
Pond group unit simultaneously enters working condition, and the battery assembly module of the minimum battery health degree is updated to reserce cell group unit simultaneously
Into stand-by state.
It can be seen from the above technical proposal that in embodiments of the present invention, determining to back up from N number of battery assembly module
Battery assembly module and (N-1) a working battery group unit, enabled reserce cell group unit enter stand-by state, (N-1) a work
Battery assembly module enters working condition；The battery for calculating each working battery group unit in (N-1) a working battery group unit is strong
Kang Du, and determine the inconsistency health degree of (N-1) a working battery group unit；When (N-1) a working battery group unit not
The minimum battery health degree that the increment of consistency health degree is greater than in predetermined threshold and (N-1) a working battery group unit is lower than
When the battery health of reserce cell group unit is spent, reserce cell group unit is updated to working battery group unit and enters work shape
The battery assembly module of minimum battery health degree is updated to reserce cell group unit and enters stand-by state by state.It can be seen that this
Invention embodiment passes through one group of redundant load removable battery assembly module (battery backup unit), calculates each working battery
The SOH of group unit judges whether the battery assembly module for replacing least life, worst battery pack is rested,
Effect is similar to the decrease speed for delaying the minimum short slab in wooden pail effect, to improve the operation longevity of Vehicular dynamic battery group
Life.
Moreover, in embodiments of the present invention, can be added based on very poor and pre-set maximum allowable very poor calculate
Weight coefficient, calculated weighting coefficient with it is very poor closely related, the accuracy of inconsistency health degree can be significantly improved.
Detailed description of the invention
Only illustratively description and explain the present invention for the following drawings, not delimit the scope of the invention.
Fig. 1 is the flow chart of the operation method of Vehicular dynamic battery group of the present invention.
Fig. 2 is the demonstrative structure figure according to Vehicular dynamic battery group of the present invention.
Fig. 3 is the first demonstrative structure figure of battery assembly module of the present invention.
Fig. 4 is the second demonstrative structure figure of battery assembly module of the present invention.
Fig. 5 is the exemplary flow chart of the operation method of Vehicular dynamic battery group of the present invention.
Fig. 6 is the structure chart of the running gear of Vehicular dynamic battery group of the present invention.
Specific embodiment
In order to which the technical features, objects and effects of invention are more clearly understood, the Detailed description of the invention present invention is now compareed
Specific embodiment, identical label indicates identical part in the various figures.
It is succinct and intuitive in order to what is described, hereafter by describing several representative embodiments come to side of the invention
Case is illustrated.A large amount of details is only used for helping to understand the solution of the present invention in embodiment.However, it will be apparent that of the invention
Technical solution can be not limited to these details when realizing.In order to avoid unnecessarily having obscured the solution of the present invention, Yi Xieshi
It applies mode not described meticulously, but only gives frame.Hereinafter, " comprising " refers to " including but not limited to ", " root
According to ... " refer to " according at least to ..., but be not limited to according only to ... ".Due to the speech habits of Chinese, hereinafter without spy
When not pointing out the quantity of an ingredient, it is meant that the ingredient is either one or more, or can be regarded as at least one.
Vehicular dynamic battery group usually has the connection type gone here and there first and afterwards, i.e., multiple parallel units are serially connected again as vehicle
Use power battery pack.In embodiments of the present invention, for avoid performance poor parallel units due to lasting use performance it is continuous
Deteriorate, propose the concept of redundancy replacement, the parallel units for making the service life minimum are rested, to realize the longevity of Vehicular dynamic battery group
Destiny row.
Fig. 1 is the flow chart of the operation method of Vehicular dynamic battery group of the present invention.Vehicular dynamic battery group includes N number of mutual
Concatenated battery assembly module, wherein N is the positive integer for being at least 2.
As shown in Figure 1, this method comprises:
Step 101: reserce cell group unit and (N-1) a working battery group unit are determined from N number of battery assembly module,
Enabled reserce cell group unit enters stand-by state, and (N-1) a working battery group unit enters working condition.Wherein, N number of battery
Group unit is with identical structure and has identical electrical properties.
Wherein, reserce cell group unit enters stand-by state and is meant that: although battery assembly module keeps series connection,
Electrical power is not provided for Vehicular dynamic battery group, the battery assembly module is reserce cell group unit at this time；Working battery group list
Member enters working condition and is meant that: battery assembly module provides electrical power for Vehicular dynamic battery group, at this time the battery assembly module
For working battery group unit.
In one embodiment, reserce cell group unit and (N-1) a work electricity are determined from N number of battery assembly module
Pond group unit includes:
Operation is completely filled into power battery pack execution comprising the N number of battery assembly module for being in working condition；Calculate N number of electricity
The minimum battery assembly module of battery health degree is determined as reserce cell group unit by the battery health degree (SOH) of pond group unit, will
Battery assembly module other than the minimum battery assembly module of battery health degree is determined as working battery group unit.
Fig. 2 is the demonstrative structure figure according to Vehicular dynamic battery group of the present invention.
In Fig. 2, Vehicular dynamic battery group includes N number of battery assembly module being serially connected, and each battery assembly module
Also it is parallel with respective switch.For example, battery assembly module is parallel with switch 1；Battery pack that battery assembly module 2 is parallel with switch 2 ...
Unit N parallel has switch N.Wherein, when switching in the closure state, battery assembly module corresponding with closed state switch is
Stand-by state；When switch is in an off state, battery assembly module corresponding with off-state switch is in working condition.
Citing: in Fig. 2, the switch 1 of battery assembly module 1 is in an off state, and the branch of switch 1 disconnects, battery pack list
Member 1 provides electrical power for Vehicular dynamic battery group, and battery assembly module 1 is in running order；The switch 2 of battery assembly module 2 is in
Off-state, the branch of switch 2 disconnect, and battery assembly module 2 provides electrical power for Vehicular dynamic battery group, at battery assembly module 2
In working condition；The switch N of battery assembly module N is in closed state, and the branch of switch N is connected, and battery assembly module N is short-circuited,
Therefore battery assembly module N does not provide electrical power for Vehicular dynamic battery group, and battery assembly module N is in stand-by state.
In one embodiment, battery assembly module includes m single batteries parallel with one another, and wherein m is to be at least 2
Positive integer.
Fig. 3 is the first demonstrative structure figure of battery assembly module of the present invention.As seen from Figure 3, the single battery C in battery pack
Parallel with one another, wherein m is number of parallel, m >=1.
In one embodiment, battery assembly module includes the q single battery groups being serially connected, wherein each monomer is electric
Pond group includes p single batteries parallel with one another, and p is the positive integer for being at least 2, and q is the positive integer for being at least 2.
Fig. 4 is the second demonstrative structure figure of battery assembly module of the present invention.
From fig. 4, it can be seen that battery assembly module includes cascaded structure.A parallel units are formed after p single battery is in parallel, and
And q parallel units series connection becomes a battery assembly module, p >=1, q >=1.In Fig. 4, parallel units S1 includes p a mutually simultaneously
The single battery of connection；Parallel units S2 includes that p single battery ... parallel units Sq parallel with one another include p parallel with one another
Single battery.Moreover, parallel units S1, parallel units S2 ... parallel units Sq are serially connected to form battery assembly module.
Step 102: the battery health degree of each working battery group unit in (N-1) a working battery group unit is calculated, and
The inconsistency health degree of (N-1) a working battery group unit is determined based on the battery health degree of each working battery group unit.
Herein, the inconsistency health degree H of (N-1) a working battery group unit can be (N-1) a working battery group
The very poor of the SOH of unit, mean square deviation or the very poor combination with pole variance or other variants.
Citing: the calculation method of H:
H=a*A+b* σ；Wherein A is the very poor of the SOH of (N-1) a working battery group unit；σ is (N-1) a working battery
The mean square deviation of the SOH of group unit；A, b are weight coefficient；a≥0；b≥0；A+b=1.
It is specific:
A=Pmax-Pmin, wherein Pmax and Pmin is the maximum value in the SOH of (N-1) a working battery group unit respectively
And minimum value；
Wherein Pi indicates i-th of numerical value in (N-1) a SOH, i ∈ [1, (N-
1)]；Indicate the mean value of all (N-1) a SOH.
In one embodiment, weighting coefficient a is predefined, in which: a=(A-A (0))/(A (max)-A (0)).
Wherein: A (max) is the maximum allowable very poor of preset, battery assembly module SOH；A (0) is factory state
When, battery assembly module SOH it is very poor.
As it can be seen that in embodiments of the present invention, based on A, A (0) and pre-set maximum allowable very poor can calculate
A, calculated a and A is closely related, can significantly improve the accuracy of H.
For example, A will become larger, and cause a relatively large, and b is relatively after the battery in Vehicular dynamic battery group breaks down
Small, H is relatively large, and thus accurate response goes out the inconsistency between the battery pack that works.
Step 103: when (N-1) a working battery group unit inconsistency health degree increment be greater than predetermined threshold and
It (N-1), will be standby when the minimum battery health degree in a working battery group unit is spent lower than the battery health of reserce cell group unit
Part battery assembly module is updated to working battery group unit and enters working condition, more by the battery assembly module of minimum battery health degree
Newly it is reserce cell group unit and enters stand-by state.
In one embodiment, the battery of each working battery group unit in (N-1) a working battery group unit is calculated
Health degree are as follows: when (N-1) a working battery group unit is in first and completely fills the moment, calculate (N-1) a working battery group unit
In each working battery group unit battery health degree；The inconsistency health of (N-1) a working battery group unit in step 103
The increment of degree is greater than predetermined threshold are as follows: inconsistency health of (N-1) a working battery group unit when first completely fills the moment
Degree, with (N-1) a working battery group unit first completely fill upper the one of the moment completely fill the moment when inconsistency health degree between
Difference, be greater than predetermined threshold.
Preferably, before reserce cell group unit is updated to working battery group unit, further judge reserce cell
Whether the state-of-charge (SOC) and the SOC of working battery group unit of group unit are at equilibrium.Wherein: if be in
Reserce cell group unit is then directly updated to working battery group unit by equilibrium state；If being not at equilibrium state, it is directed to
Vehicular dynamic battery group executes equalization operation, so that reserce cell group unit is in balanced shape with the SOC of working battery group unit
State and then reserce cell group unit is updated to working battery group unit.
Exemplary, equalization operation may include:
(1), when the SOC of reserce cell group unit is lower, enabled working battery group unit is put to reserce cell group unit
Electricity.
(2), as the SOC higher of reserce cell group unit, enabled reserce cell group unit is put to working battery group unit
Electricity.
The above demonstration describes the specific example of equalization operation, it will be appreciated by those of skill in the art that this description
Be only it is exemplary, be not intended to limit the present invention the protection scope of embodiment.
In one embodiment, this method is after step 103 further include:
It calculates every in (N-1) a working battery group unit after reserce cell group unit to be updated to working battery group unit
The battery health degree of a working battery group unit, and (the N- after working battery group unit is updated to based on reserce cell group unit
1) in a working battery group unit each working battery group unit battery health degree, determine again described by reserce cell group list
Member is updated to the inconsistency health degree of (N-1) a working battery group unit after working battery group unit；When what is determined again
(N-1) increment of the inconsistency health degree of a working battery group unit be greater than predetermined threshold and by reserce cell group unit more
Minimum battery health degree in new (N-1) a working battery group unit for after working battery group unit is lower than reserce cell group list
When the battery health of member is spent, the battery assembly module of minimum battery health degree is updated to reserce cell group unit and enters spare shape
The reserce cell group unit is updated to working battery group unit and enters working condition, by the minimum battery health by state
The battery assembly module of degree is updated to reserce cell group unit and enters stand-by state.
As it can be seen that in embodiments of the present invention, each battery assembly module of Vehicular dynamic battery group can be removed or be accessed
In current supply circuit.When battery assembly module is stand-by state, battery assembly module removes out current supply circuit；When battery assembly module is work
When making state, battery assembly module accesses current supply circuit.It persistently include the battery pack of a stand-by state in Vehicular dynamic battery group
Unit, remaining battery assembly module are in working condition.
When Vehicular dynamic battery group is in fully charged state every time, the electricity of each working condition in Vehicular dynamic battery group is estimated
The SOH of pond group unit calculates the inconsistency health degree of Vehicular dynamic battery group, when inconsistency health degree was completely filled compared to last time
Increment when state is more than given threshold, and SOH minimum in the battery pack of each working condition is lower than battery backup unit
When SOH, then the battery pack of the minimum working condition of SOH is displaced with battery backup unit, power operating system after replacement
Before inconsistency health degree will be significantly better than replacement.Moreover, other battery assembly module service lives reduce in dynamical system
In the process, stand-by unit is being rested, until replacement is arrived next time.
Fig. 5 is the exemplary flow chart of the operation method of Vehicular dynamic battery group of the present invention.
In Fig. 5, Vehicular dynamic battery group includes N number of removable cell group, the number of each unit battery pack
For 1~N, any of them (N-1) a cell group series connection can provide vehicle and operate normally required voltage.
In the initial stage combo of Vehicular dynamic battery group, progress is once completely filled, and calculates the respective longevity of N number of cell group
Life, service life worst cell group is recorded as the stand-by unit battery pack of electrical power, service life is not provided
SOHmin0, remaining (N-1) a battery pack is as operation part in system to provide electrical power.
With the use of battery, (N-1) a cell group carries out charge and discharge, and capacity reduces, life time decay (SOH drop
It is low).In some fully charged moment t that battery uses, the service life of each cell group in (N-1) a cell group is calculated,
Service life based on each cell group calculates the inconsistency health degree H of (N-1) a cell group, inconsistency health
Degree H can be the very poor of each unit battery life, mean square deviation and combination or other variants.Moreover, from (N-1) a list
The service life minimum corresponding cell group of SOHmin is filtered out in first battery pack.
Citing: H (t)=aA (t)+b σ (t), a, b are weight coefficient, and wherein t is meant that and currently completely fills the moment；a≥0,b
>=0, a+b=1.H (t) is the inconsistency health degree for currently completely filling the moment；A (t) is very poor currently completely to fill the SOH at moment；σ
(t) the SOH mean square deviation currently completely to fill the moment.
Next, it is determined whether needing replacing cell group.Herein, the growth of inconsistency health degree H is preset
Threshold value HS.When this inconsistency health degree H (t) and last inconsistency health degree H (t-1) difference are more than threshold value HS,
And when least life cell group service life SOHmin is lower than stand-by unit battery life in operation battery pack, then from circuit
The corresponding cell group of the SOHmin is removed, the corresponding battery pack of SOHmin is updated to battery backup and enters spare shape
State, and original stand-by unit battery pack enters working condition.
Wherein, after determining to need replacing cell group, further judge the state-of-charge of reserce cell group unit
(SOC) whether at equilibrium with the SOC of working battery group unit.Wherein: if at equilibrium, directly will
Reserce cell group unit is updated to working battery group unit；If being not at equilibrium state, held for Vehicular dynamic battery group
Row equalization operation, so that the SOC of reserce cell group unit and working battery group unit is at equilibrium and then will back up electricity
Pond group unit is updated to working battery group unit.
Operation method shown in fig. 5 is recycled, one group of redundant load removable battery assembly module (battery backup list is passed through
Member), and the SOH for calculating each working battery group unit constantly is completely filled every time, judge whether the battery pack list for replacing least life
Member allows worst battery pack to be rested, and effect is similar to the lower reduction of speed for delaying the minimum short slab in wooden pail effect
Degree, to extend the service life of battery.
Based on foregoing description, embodiment of the present invention also proposed the running gear of Vehicular dynamic battery group.
Fig. 6 is the structure chart of the running gear of Vehicular dynamic battery group of the present invention.Vehicular dynamic battery group includes N number of mutual
Concatenated battery assembly module, wherein N is the positive integer for being at least 2.
As shown in fig. 6, the running gear includes:
Determining module 601, for determining reserce cell group unit and (N-1) a work from N number of battery assembly module
Make battery assembly module, enables the reserce cell group unit and enter stand-by state, (N-1) a working battery group unit enters
Working condition；
Inconsistency health degree determining module 602, for calculating each work in described (N-1) a working battery group unit
The battery health degree of battery assembly module, and based on described in the determination of the battery health degree of each working battery group unit (N-1)
The inconsistency health degree of a working battery group unit；
Update module 603, the increment for the inconsistency health degree when described (N-1) a working battery group unit are greater than
Minimum battery health degree in predetermined threshold and (N-1) a working battery group unit is lower than the electricity of reserce cell group unit
When the health degree of pond, the reserce cell group unit is updated to working battery group unit and enters working condition, it will be described minimum
The battery assembly module of battery health degree is updated to reserce cell group unit and enters stand-by state.
In one embodiment: determining module 601, for that will include the N number of battery assembly module for being in working condition
Power battery pack execution completely fill operation；The battery health degree of N number of battery assembly module is calculated, battery health degree is minimum
Battery assembly module is determined as reserce cell group unit, by the battery pack list other than the minimum battery assembly module of battery health degree
Member is determined as working battery group unit.
In one embodiment: battery assembly module includes m single batteries parallel with one another, and wherein m is to be at least 2
Positive integer.
In one embodiment: battery assembly module includes the q single battery groups being serially connected, wherein each monomer is electric
Pond group includes p single batteries parallel with one another, and p is the positive integer for being at least 2, and q is the positive integer for being at least 2.
In one embodiment: inconsistency health degree determining module 602, in (N-1) a working battery
Group unit is in first when completely filling the moment, each working battery group unit in (N-1) a working battery group unit described in calculating
Battery health degree；
Wherein the increment of the inconsistency health degree of (N-1) a working battery group unit is greater than predetermined threshold are as follows: (N-1)
Inconsistency health degree of a working battery group unit when first completely fills the moment, with (N-1) a working battery group unit
Difference between one upper one inconsistency health degree when completely filling the moment for completely filling the moment, is greater than predetermined threshold.
In one embodiment: update module 603 is also used to calculating for reserce cell group unit and is updated to working battery
The battery health degree of each working battery group unit in (N-1) a working battery group unit after group unit, and based on backup electricity
Pond group unit is updated to the electricity of each working battery group unit in (N-1) a working battery group unit after working battery group unit
Pond health degree, reserce cell group unit is updated to (N-1) a working battery group list after working battery group unit by determination again
The inconsistency health degree of member；When the increment of the inconsistency health degree of (N-1) a working battery group unit determined again is big
In predetermined threshold and reserce cell group unit is updated in (N-1) a working battery group unit after working battery group unit
Minimum battery health degree when being spent lower than the battery health of reserce cell group unit, by the battery assembly module of minimum battery health degree
It is updated to reserce cell group unit and enters stand-by state, reserce cell group unit is updated to working battery group unit and is entered
The battery assembly module of minimum battery health degree is updated to reserce cell group unit and enters stand-by state by working condition.
Can by embodiment of the present invention proposes the operation method of Vehicular dynamic battery group be applied to various types of electricity
In electrical automobile.For example, can be applied to mixed power electric car (HEV), pure electric automobile (BEV), fuel battery electric vapour
Vehicle (FCEV) and other new energy (such as supercapacitor, flywheel high-efficiency energy storage vehicle) automobiles etc..
In conclusion embodiment of the present invention include: determined from N number of battery assembly module reserce cell group unit and
(N-1) a working battery group unit, enabled reserce cell group unit enter stand-by state, (N-1) a working battery group unit into
Enter working condition；The battery health degree of each working battery group unit in (N-1) a working battery group unit is calculated, and is determined
(N-1) the inconsistency health degree of a working battery group unit；When the inconsistency health degree of (N-1) a working battery group unit
Increment be greater than the minimum battery health degree in predetermined threshold and (N-1) a working battery group unit and be lower than reserce cell group list
When the battery health of member is spent, reserce cell group unit is updated to working battery group unit and enters working condition, by minimum electricity
The battery assembly module of pond health degree is updated to reserce cell group unit and enters stand-by state.It can be seen that embodiment party of the present invention
Formula passes through one group of redundant load removable battery assembly module (battery backup unit), completely fills and calculates each working battery group constantly
The SOH of unit judges whether the battery assembly module for replacing least life, worst battery pack is rested, imitates
Fruit is similar to delay the decrease speed of the minimum short slab in wooden pail effect, to improve the operation longevity of Vehicular dynamic battery group
Life.
Moreover, in embodiments of the present invention, can be added based on very poor and pre-set maximum allowable very poor calculate
Weight coefficient, calculated weighting coefficient with it is very poor closely related, the accuracy of inconsistency health degree can be significantly improved.
Hardware module in each embodiment mechanically or can be realized electronically.For example, a hardware module
It may include that the permanent circuit specially designed or logical device (such as application specific processor, such as FPGA or ASIC) are specific for completing
Operation.Hardware module also may include programmable logic device or circuit by software provisional configuration (as included general procedure
Device or other programmable processors) for executing specific operation.Mechanical system is used as specific, or using dedicated permanent
Property circuit, or Lai Shixian hardware module (such as is configured) by software using the circuit of provisional configuration, can according to cost with
Temporal consideration is to determine.
The present invention also provides a kind of machine readable storage medium, storage is for making a machine execute side as described herein
The instruction of method.Specifically, system or device equipped with storage medium can be provided, store in realization on the storage medium
State the software program code of the function of any embodiment in embodiment, and make the system or device computer (or CPU or
MPU the program code being stored in a storage medium) is read and executed.Further, it is also possible to be made by the instruction based on program code
Operating system of hands- operation etc. is calculated to complete partly or completely practical operation.It can also will read from storage medium
The expansion being connected to a computer is write in memory set in the expansion board in insertion computer or write to program code
In the memory being arranged in exhibition unit, then the instruction based on program code makes to be mounted on expansion board or expanding element
CPU etc. comes execution part and whole practical operations, to realize the function of any embodiment in above embodiment.
Storage medium embodiment for providing program code include floppy disk, hard disk, magneto-optic disk, CD (such as CD-ROM,
CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), tape, non-volatile memory card and ROM.Selectively,
It can be by communication network from download program code on server computer or cloud.
It should be noted that step and module not all in above-mentioned each process and each system construction drawing is all necessary
, certain steps or module can be ignored according to the actual needs.Each step execution sequence be not it is fixed, can be according to need
It is adjusted.System structure described in the various embodiments described above can be physical structure, be also possible to logical construction, that is, have
A little modules may be realized by same physical entity, be realized alternatively, some modules may divide by multiple physical entities, alternatively, can be with
It is realized jointly by certain components in multiple autonomous devices.
Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.To make simplified form,
Part related to the present invention is only schematically shown in each figure, and does not represent its practical structures as product.Separately
Outside, so that simplified form is easy to understand, with the component of identical structure or function in some figures, it is only symbolically depicted
In one, or only marked one of those.Herein, "one" is not offered as limiting the quantity of relevant portion of the present invention
It is made as " only this ", and "one" situation for not indicating to exclude the quantity " more than one " of relevant portion of the present invention.At this
Wen Zhong, "upper", "lower", "front", "rear", "left", "right", "inner", "outside" etc. are only used for indicating the opposite position between relevant portion
Set relationship, and the absolute position of these non-limiting relevant portions.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope that is bright, and being not intended to limit the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of operation method of Vehicular dynamic battery group, which is characterized in that the Vehicular dynamic battery group includes N number of mutual string
The battery assembly module of connection, wherein N is the positive integer for being at least 2, this method comprises:
Reserce cell group unit and (N-1) a working battery group unit are determined from N number of battery assembly module, are enabled described
Reserce cell group unit enters stand-by state, and (N-1) a working battery group unit enters working condition；
The battery health degree of each working battery group unit in (N-1) described in calculating a working battery group unit, and based on described
The inconsistency health degree of (N-1) a working battery group unit described in the battery health degree of each working battery group unit is determining；
When the increment of the inconsistency health degree of (N-1) a working battery group unit is greater than predetermined threshold and the (N-
It 1), will be described standby when the minimum battery health degree in a working battery group unit is spent lower than the battery health of reserce cell group unit
Part battery assembly module is updated to working battery group unit and enters working condition, by the battery pack list of the minimum battery health degree
Member is updated to reserce cell group unit and enters stand-by state.
2. the operation method of Vehicular dynamic battery group according to claim 1, which is characterized in that described from N number of battery pack
Reserce cell group unit is determined in unit and (N-1) a working battery group unit includes:
Operation is completely filled into power battery pack execution comprising the N number of battery assembly module for being in working condition；
The minimum battery assembly module of battery health degree is determined as backing up by the battery health degree for calculating N number of battery assembly module
Battery assembly module other than the minimum battery assembly module of the battery health degree is determined as working battery by battery assembly module
Group unit.
3. the operation method of Vehicular dynamic battery group according to claim 1, which is characterized in that
The battery assembly module includes m single batteries parallel with one another, and wherein m is the positive integer for being at least 2；Or
The battery assembly module includes the q single battery groups being serially connected, wherein each single battery group includes p a mutually simultaneously
The single battery of connection, p are the positive integer for being at least 2, and q is the positive integer for being at least 2.
4. the operation method of Vehicular dynamic battery group according to claim 1, which is characterized in that
The battery health degree for calculating each working battery group unit in (N-1) a working battery group unit the are as follows: in (N-
1) a working battery group unit is in first when completely filling the moment, each work in (N-1) a working battery group unit described in calculating
The battery health degree of battery assembly module；
The increment of the inconsistency health degree of (N-1) a working battery group unit is greater than predetermined threshold are as follows: (N-1)
Inconsistency health degree of a working battery group unit when first completely fills the moment, with (N-1) a working battery group unit
Described first completely fill upper the one of the moment completely fill the moment when inconsistency health degree between difference, be greater than predetermined threshold.
5. the operation method of Vehicular dynamic battery group according to claim 1, which is characterized in that this method further include:
It calculates every in (N-1) a working battery group unit after the reserce cell group unit to be updated to working battery group unit
The battery health degree of a working battery group unit, and after being updated to working battery group unit based on the reserce cell group unit
(N-1) in a working battery group unit each working battery group unit battery health degree, determine again described by reserce cell
Group unit is updated to the inconsistency health degree of (N-1) a working battery group unit after working battery group unit；
When the increment of the inconsistency health degree of described (N-1) a working battery group unit determined again is greater than predetermined threshold
And it is strong that reserce cell group unit is updated to the minimum battery in (N-1) a working battery group unit after working battery group unit
When Kang Du is spent lower than the battery health of reserce cell group unit, the battery assembly module of minimum battery health degree is updated to backup electricity
Pond group unit simultaneously enters stand-by state, the reserce cell group unit is updated to working battery group unit and enters work shape
The battery assembly module of the minimum battery health degree is updated to reserce cell group unit and enters stand-by state by state.
6. a kind of running gear of Vehicular dynamic battery group, which is characterized in that the Vehicular dynamic battery group includes N number of mutual string
The battery assembly module of connection, wherein N is the positive integer for being at least 2, which includes:
Determining module, for determining reserce cell group unit and (N-1) a working battery group from N number of battery assembly module
Unit enables the reserce cell group unit and enters stand-by state, and (N-1) a working battery group unit enters work shape
State；
Inconsistency health degree determining module, for calculating each working battery group in described (N-1) a working battery group unit
The battery health degree of unit, and based on (N-1) a work described in the determination of the battery health degree of each working battery group unit
The inconsistency health degree of battery assembly module；
Update module, the increment for the inconsistency health degree when described (N-1) a working battery group unit are greater than predetermined door
Minimum battery health degree in limit value and (N-1) a working battery group unit is lower than the battery health of reserce cell group unit
When spending, the reserce cell group unit is updated to working battery group unit and enters working condition, the minimum battery is good for
The battery assembly module of Kang Du is updated to reserce cell group unit and enters stand-by state.
7. the running gear of Vehicular dynamic battery group according to claim 6, which is characterized in that
Determining module, for by include be in N number of battery assembly module of working condition power battery pack execution completely fill operation；
The minimum battery assembly module of battery health degree is determined as reserce cell by the battery health degree for calculating N number of battery assembly module
Group unit, is determined as working battery group list for the battery assembly module other than the minimum battery assembly module of the battery health degree
Member.
8. the running gear of Vehicular dynamic battery group according to claim 6, which is characterized in that
The battery assembly module includes m single batteries parallel with one another, and wherein m is the positive integer for being at least 2；Or
The battery assembly module includes the q single battery groups being serially connected, wherein each single battery group includes p a mutually simultaneously
The single battery of connection, p are the positive integer for being at least 2, and q is the positive integer for being at least 2.
9. the running gear of Vehicular dynamic battery group according to claim 6, which is characterized in that
Inconsistency health degree determining module is used for when (N-1) a working battery group unit is in first and completely fills the moment,
The battery health degree of each working battery group unit in (N-1) described in calculating a working battery group unit；
Wherein the increment of the inconsistency health degree of described (N-1) a working battery group unit is greater than predetermined threshold are as follows: described
(N-1) inconsistency health degree of a working battery group unit when first completely fills the moment, with (N-1) a working battery group
Unit described first completely fill upper the one of the moment completely fill the moment when inconsistency health degree between difference, be greater than predetermined threshold
Value.
10. the running gear of Vehicular dynamic battery group according to claim 6, which is characterized in that
Update module is also used to calculate (N-1) a work after the reserce cell group unit to be updated to working battery group unit
Make the battery health degree of each working battery group unit in battery assembly module, and work is updated to based on the reserce cell group unit
The battery health degree of each working battery group unit in (N-1) a working battery group unit after making battery assembly module, again really
The fixed inconsistency health that reserce cell group unit is updated to (N-1) a working battery group unit after working battery group unit
Degree；When the increment of the inconsistency health degree of described (N-1) a working battery group unit determined again is greater than predetermined threshold
And it is strong that reserce cell group unit is updated to the minimum battery in (N-1) a working battery group unit after working battery group unit
When Kang Du is spent lower than the battery health of reserce cell group unit, the battery assembly module of minimum battery health degree is updated to backup electricity
Pond group unit simultaneously enters stand-by state, the reserce cell group unit is updated to working battery group unit and enters work shape
The battery assembly module of the minimum battery health degree is updated to reserce cell group unit and enters stand-by state by state.
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