CN109823232A - Battery balanced control method, device, battery management system and vehicle - Google Patents
Battery balanced control method, device, battery management system and vehicle Download PDFInfo
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- CN109823232A CN109823232A CN201910087126.XA CN201910087126A CN109823232A CN 109823232 A CN109823232 A CN 109823232A CN 201910087126 A CN201910087126 A CN 201910087126A CN 109823232 A CN109823232 A CN 109823232A
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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
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Abstract
This disclosure relates to a kind of battery balanced control method, device, battery management system and vehicle.The described method includes: after electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then the acquisition chip of battery management system carries out Balance route to the battery pack；The battery management system determines whether the battery pack meets balanced stop condition in each wake up, wherein the battery management system is set with wake-up period, so that the battery management system periodically can actively wake up according to the wake-up period；If the battery management system determines that the battery pack is unsatisfactory for the balanced stop condition when waking up, the acquisition chip continues to carry out Balance route to the battery pack.In this way, the consistency of battery pack can preferably be promoted, simultaneously, it is ensured that the safety of lower electrical equalization.
Description
Technical field
This disclosure relates to vehicular field, and in particular, to a kind of battery balanced control method, device, battery management system
And vehicle.
Background technique
For electric car, power battery pack in use for some time, between the single battery for constituting power battery pack
Inconsistency be gradually increased, hence it is evident that it is high to show as certain monomer battery voltages in battery pack, and certain monomer battery voltages are low.
For battery pack, the pressure difference being gradually increased will affect the charge and discharge of battery pack using capacity, to make in some cases
Certain single battery performances accelerate decaying, and finally cause battery pack premature failure.In the prior art, generally pass through battery management
System (BMS) carries out Balance route to battery pack, and the single battery high to voltage discharges.And battery management system is to battery
Group carries out when Balance route often focuses on vehicle smooth-ride or when Vehicular charging, and portfolio effect is bad.
Summary of the invention
Purpose of this disclosure is to provide a kind of battery balanced control method, device, battery management system and vehicles, to be promoted
Battery balanced effect.
To achieve the goals above, according to the disclosure in a first aspect, providing a kind of battery balanced control method, the side
Method includes:
After electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then the acquisition chip of battery management system is to described
Battery pack carries out Balance route；
The battery management system determines whether the battery pack meets balanced stop condition in each wake up, wherein
The battery management system is set with wake-up period, so that the battery management system can be periodical according to the wake-up period
Ground actively wakes up；
If the battery management system determines that the battery pack is unsatisfactory for the balanced stop condition when waking up, described
Acquisition chip continues to carry out Balance route to the battery pack.
Through the above scheme, on the one hand, Balance route is carried out to battery pack using the time of suspend mode electric under vehicle, to increase
The time for balance of battery pack, so as to preferably promote the consistency of battery pack.On the other hand, equilibrium is being carried out to battery pack
During control, battery management system is periodically waken up, to detect to battery pack, thereby may be ensured that lower electrical equalization
Safety.
Optionally, the acquisition chip of the battery management system to the battery pack carry out Balance route the step of it
Before, the method also includes:
Calculate balanced duration needed for the battery pack；
If balanced duration needed for the battery pack is greater than preset lower electrical equalization duration, for the battery management system
Set the wake-up period, wherein the wake-up period is less than the lower electrical equalization duration；
It is not the cell tube if balanced duration needed for the battery pack is less than or equal to the lower electrical equalization duration
Manage wake-up period described in default.
By the above-mentioned means, when the balanced duration needed for battery pack is less than or equal to preset lower electrical equalization duration, no
Wake-up period is set for battery management system, Balance route is carried out to battery pack in the acquisition chip of further battery management system
In the process without waking up entire battery management system.Balanced duration needed for battery pack is greater than preset lower electrical equalization duration
When, wake-up period is set for battery management system, convenient for period during acquisition chip carries out Balance route to battery pack
Entire battery management system is waken up to property, to guarantee the safety in long-time balancing procedure.
Optionally, whether the determination battery pack meets balanced stop condition, comprising:
If the single battery in the battery pack meets coherence request or the battery failure or the battery pack
Currently balanced duration reaches balanced duration needed for the battery pack, it is determined that the battery pack meets balanced stopping item
Part；
If the single battery in the battery pack is unsatisfactory for the coherence request, and the battery pack fault-free, and institute
It states the currently balanced duration of battery pack and balanced duration needed for the battery pack has not yet been reached, it is determined that the battery pack is discontented
The foot balanced stop condition.
Using aforesaid way, using to single battery consistency judgement, battery failure whether judgement, battery pack works as
Preceding balanced duration determines whether battery pack meets balanced stop condition, meets consistency with the single battery in battery pack and wants
It asks or stops in the case that duration that battery failure or battery pack are currently balanced has reached certain time length balanced.
Optionally, the method also includes:
If the battery failure, fault message is sent to remote supervisory and control(ling) equipment, the fault message is used to indicate institute
State battery failure.
Using aforesaid way, fault message is sent to remote supervisory and control(ling) equipment in battery failure, so that car owner knows in time
Know battery failure, guarantees vehicle safety.
Optionally, the method also includes:
If the battery management system actively wakes up failure, judge whether the wake-up for receiving remote supervisory and control(ling) equipment transmission
Instruction, wherein the remote supervisory and control(ling) equipment reaches preset suspend mode tolerance in the sleep time for determining the battery management system
In the case where duration, Xiang Suoshu battery management system sends the wake up instruction, wherein the suspend mode tolerance duration is greater than described
Wake-up period；
In response to the wake up instruction received, wake operation is executed.
It can also be set by remotely monitoring using aforesaid way in the case where battery management system actively wakes up failure
It is standby that battery management system is waken up, it avoids the occurrence of battery management system and actively wakes up failure and cause that cell tube can not be waken up
The case where reason system.
Optionally, the method also includes:
If the battery management system determines that the battery pack meets the balanced stop condition when waking up, described to adopt
Collect chip to stop carrying out Balance route to the battery pack.
Aforesaid way is used, if battery management system determines that battery pack meets balanced stop condition when waking up, is acquired
Chip stops carrying out Balance route to battery pack, stops the equilibrium to battery pack in time when battery pack meets balanced stop condition
Time for balance and the balanced electricity spent are saved in control.
According to the second aspect of the disclosure, a kind of battery balanced control device is provided, described device includes:
Equalization control module, for after electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then battery management system
Acquisition chip to the battery pack carry out Balance route；
Determining module determines whether the battery pack meets equilibrium and stop in each wake up for the battery management system
Only condition, wherein the battery management system is set with wake-up period, so that the battery management system can be called out according to described
It actively wakes up with waking up cycle；
If the equalization control module determines that the battery pack is unsatisfactory for institute when waking up for the battery management system
Balanced stop condition is stated, then the acquisition chip continues to carry out Balance route to the battery pack.
Through the above scheme, on the one hand, Balance route is carried out to battery pack using the time of suspend mode electric under vehicle, to increase
The time for balance of battery pack, so as to preferably promote the consistency of battery pack.On the other hand, equilibrium is being carried out to battery pack
During control, battery management system is periodically waken up, to detect to battery pack, thereby may be ensured that lower electrical equalization
Safety.
Optionally, the equalization control module includes:
Computational submodule, for the acquisition chip in the battery management system to the battery pack carry out Balance route it
Before, calculate balanced duration needed for the battery pack；
Submodule is set, if being greater than preset lower electrical equalization duration for balanced duration needed for the battery pack, for
The battery management system sets the wake-up period, wherein the wake-up period is less than the lower electrical equalization duration；
If balanced duration needed for the equalization control module is used for the battery pack is less than or equal to the lower electrical equalization
Duration does not then set the wake-up period for the battery management system.
By the above-mentioned means, when the balanced duration needed for battery pack is less than or equal to preset lower electrical equalization duration, no
Wake-up period is set for battery management system, Balance route is carried out to battery pack in the acquisition chip of further battery management system
In the process without waking up entire battery management system.Balanced duration needed for battery pack is greater than preset lower electrical equalization duration
When, wake-up period is set for battery management system, convenient for period during acquisition chip carries out Balance route to battery pack
Entire battery management system is waken up to property, to guarantee the safety in long-time balancing procedure.
Optionally, if single battery of the determining module in the battery pack meets coherence request or described
Currently the duration of equilibrium has reached balanced duration needed for the battery pack for battery failure or the battery pack, it is determined that institute
It states battery pack and meets balanced stop condition；If the single battery in the battery pack is unsatisfactory for the coherence request, and described
Battery pack fault-free, and currently balanced duration needed for the battery pack has had not yet been reached in the duration of equilibrium to the battery pack, then
Determine that the battery pack is unsatisfactory for the balanced stop condition.
Using aforesaid way, using to single battery consistency judgement, battery failure whether judgement, battery pack works as
Preceding balanced duration determines whether battery pack meets balanced stop condition, meets consistency with the single battery in battery pack and wants
It asks or stops in the case that duration that battery failure or battery pack are currently balanced has reached certain time length balanced.
Optionally, described device further include:
Failure sending module sends fault message, the event to remote supervisory and control(ling) equipment if being used for the battery failure
Barrier information is used to indicate the battery failure.
Using aforesaid way, fault message is sent to remote supervisory and control(ling) equipment in battery failure, so that car owner knows in time
Know battery failure, guarantees vehicle safety.
Optionally, described device further include:
Judgment module judges whether to receive long-range monitoring if actively waking up failure for the battery management system
The wake up instruction that equipment is sent, wherein the remote supervisory and control(ling) equipment reaches in the sleep time for determining the battery management system
In the case where preset suspend mode tolerance duration, Xiang Suoshu battery management system sends the wake up instruction, wherein the suspend mode is held
Duration is born greater than the wake-up period；
Wake-up module executes wake operation for the wake up instruction in response to receiving.
It can also be set by remotely monitoring using aforesaid way in the case where battery management system actively wakes up failure
It is standby that battery management system is waken up, it avoids the occurrence of battery management system and actively wakes up failure and cause that cell tube can not be waken up
The case where reason system.
Optionally, if the equalization control module is also used to the battery management system and determines the battery pack when waking up
Meet the balanced stop condition, then the acquisition chip stops carrying out Balance route to the battery pack.
Aforesaid way is used, if battery management system determines that battery pack meets balanced stop condition when waking up, is acquired
Chip stops carrying out Balance route to battery pack, stops the equilibrium to battery pack in time when battery pack meets balanced stop condition
Time for balance and the balanced electricity spent are saved in control.
According to the third aspect of the disclosure, a kind of battery management system is provided, the system comprises:
Battery pack；
Acquisition chip；
Battery balanced control device provided by disclosure second aspect.
Pass through above system, on the one hand, Balance route is carried out to battery pack using the time of suspend mode electric under vehicle, to increase
The time for balance of battery pack, so as to preferably promote the consistency of battery pack.On the other hand, equilibrium is being carried out to battery pack
During control, battery management system is periodically waken up, to be detected to battery pack, thereby may be ensured that electric under vehicle
Balanced safety.
According to the fourth aspect of the disclosure, a kind of vehicle, including battery management provided by the disclosure third aspect are provided
System.
The time that the vehicle can use lower electric suspend mode carries out Balance route to battery pack, when equilibrium to increase battery pack
Between, so as to preferably promote the consistency of battery pack, also, during balancing battery group, battery management system quilt
It periodically wakes up, to be detected to battery pack, to can guarantee the safety of electrical equalization under vehicle.
Through the above technical solutions, after electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then battery management system
Acquisition chip Balance route is carried out to battery pack, battery management system determines whether battery pack meets equilibrium in each wake up
Stop condition, if battery management system determines that battery pack is unsatisfactory for balanced stop condition when waking up, acquisition chip continues pair
The battery pack carries out Balance route.Thus it is possible, on the one hand, carrying out balanced control to battery pack using the time of suspend mode electric under vehicle
System, to increase the time for balance of battery pack, so as to preferably promote the consistency of battery pack.On the other hand, to battery
During group carries out Balance route, battery management system is periodically waken up, to detect to battery pack, so as to protect
Demonstrate,prove the safety of electrical equalization under vehicle.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the flow chart of the battery balanced control method provided according to an embodiment of the present disclosure；
Fig. 2 is the flow chart of the battery balanced control method provided according to the another embodiment of the disclosure；
Fig. 3 is the block diagram of the battery balanced control device provided according to an embodiment of the present disclosure；
Fig. 4 is the block diagram of the battery management system provided according to an embodiment of the present disclosure.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Fig. 1 is the flow chart of the battery balanced control method provided according to an embodiment of the present disclosure.Illustratively, should
Method can be applied to battery management system.As shown in Figure 1, this method may comprise steps of.
In a step 11, after electricity under vehicle, however, it is determined that battery pack needs to open balanced, the then acquisition of battery management system
Chip carries out Balance route to battery pack.
Under vehicle before electricity, battery management system (BMS) suspend mode, battery management system can acquire the electricity ginseng of battery pack
Number information, to determine whether the battery pack needs to open equilibrium.Illustratively, the electrical parameter information of battery pack can be in battery pack
The voltage of each single battery, if the pressure difference in battery pack between highest monomer battery voltage and minimum monomer battery voltage
Greater than the first preset threshold, can determine battery pack need to open it is balanced, and if in battery pack highest monomer battery voltage with
Pressure difference between minimum monomer battery voltage is less than or equal to the first preset threshold, then can determine that battery pack does not need to open
It is balanced.
After electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then the acquisition chip of battery management system is to battery
Group carries out Balance route.After electricity under vehicle, vehicle enters dormant state, and battery management system also enters dormant state, in electricity
Pond management system in a dormant state during, the acquisition chip of battery management system can't suspend mode, which can be in
Working condition is to carry out Balance route to battery pack.Wherein, in battery management system sleep procedure, since vehicle is in suspend mode
State can not power, therefore, can be battery-powered by this when acquisition chip carries out Balance route to battery pack.
In a kind of possible embodiment, a kind of exemplary process diagram for the battery balanced control method that the disclosure provides
It can be as shown in Figure 2.In Fig. 2, after electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then in battery management system
Before the step of acquisition chip carries out Balance route to battery pack, the method that the disclosure provides can also include the following steps.
In step 21, after electricity under vehicle, however, it is determined that battery pack needs to open balanced, equilibrium needed for calculating battery pack
Duration.
From the above mentioned, after electricity under vehicle, before battery management system suspend mode, battery management system can acquire battery pack
Electrical parameter information.If determining that battery pack needs to open equilibrium according to the electrical parameter information of battery pack, can be joined according to the electricity
Balanced duration needed for number information calculates battery pack.It illustratively, can be according to single in the electrical parameter information and battery pack of battery pack
Balanced duration needed for the corresponding coherence request of body battery calculates battery pack.The corresponding consistency of single battery is wanted in battery pack
Preset condition can be met for the electrical parameter of battery pack by asking.Illustratively, if the electrical parameter of battery pack is single battery in battery pack
Voltage, then in battery pack the corresponding coherence request of single battery can for highest monomer battery voltage in battery pack with most
Pressure difference between low monomer battery voltage is less than or equal to the second preset threshold, due to the monomer in the battery pack after equalized
Battery consistency Ying Genggao, so the second preset threshold here should be less than the first preset threshold being mentioned above.It needs
Bright, balanced duration needed for calculating battery pack belongs to the prior art, known to those skilled in the art, does not go to live in the household of one's in-laws on getting married herein
It states.
In step 22, determine whether balanced duration needed for battery pack is greater than preset lower electrical equalization duration.If battery
Balanced duration needed for group is greater than preset lower electrical equalization duration, executes step 23；If balanced duration needed for battery pack is less than
Or be equal to lower electrical equalization duration, then without executing step 23.
In step 23, wake-up period is set for battery management system.
Preset lower electrical equalization duration can be manually set, for example, being no more than 2h.If growing up when equilibrium needed for battery pack
In preset lower electrical equalization duration, illustrate that balanced duration needed for battery pack is longer, it, can to guarantee the safety in balancing procedure
Think that battery management system sets wake-up period.Wherein, wake-up period is less than the preset lower electrical equalization duration.For battery management
The wake-up period of default periodically can actively wake up in order to battery management system according to wake-up period.Example
Ground, wake-up period can be manually set.And if balanced duration needed for battery pack is less than or equal to lower electrical equalization duration, illustrates electricity
Balanced duration needed for the group of pond is not grown, and the equilibrium of battery pack can be completed in a short time, there is no need to be battery management
Default wake-up period.
By the above-mentioned means, when the balanced duration needed for battery pack is less than or equal to preset lower electrical equalization duration, no
Wake-up period is set for battery management system, Balance route is carried out to battery pack in the acquisition chip of further battery management system
In the process without waking up entire battery management system.Balanced duration needed for battery pack is greater than preset lower electrical equalization duration
When, wake-up period is set for battery management system, convenient for period during acquisition chip carries out Balance route to battery pack
Entire battery management system is waken up to property, to guarantee the safety in long-time balancing procedure.
In step 12, battery management system determines whether battery pack meets balanced stop condition in each wake up.
After electricity under vehicle, battery management system enters dormant state, and entering dormant state from battery management system can
Every later to pass through a wake-up period to start timing, then battery management system actively wakes up, to determine battery when waking up
Whether group meets balanced stop condition.
In a kind of possible embodiment, battery management system periodically can actively be called out by hardware timer
It wakes up.Illustratively, after setting wake-up period for battery management system, which is sent to hardware timer, so as to this
Hardware timer periodically actively wakes up battery management system according to wake-up period.
It, can also be by remotely calling out if battery management system actively wakes up failure in alternatively possible embodiment
Awake mode wakes up battery management system.In this embodiment, the method that the disclosure provides may comprise steps of:
If battery management system actively wakes up failure, judge whether that the wake-up for receiving remote supervisory and control(ling) equipment transmission refers to
It enables；
In response to the wake up instruction received, wake operation is executed.
Remote supervisory and control(ling) equipment can reach preset suspend mode tolerance duration in the sleep time for determining battery management system
In the case of, wake up instruction is sent to battery management system.Wherein, suspend mode tolerance duration is greater than wake-up period, and suspend mode tolerance week
Phase is less than lower electrical equalization duration.
It can also be set by remotely monitoring using aforesaid way in the case where battery management system actively wakes up failure
It is standby that battery management system is waken up, it avoids the occurrence of battery management system and actively wakes up failure and cause that cell tube can not be waken up
The case where reason system.
And if the mode of Remote Wake Up can not still wake up battery management system, remote supervisory and control(ling) equipment can be to car owner's terminal
Prompting message is sent, which can serve to indicate that battery management system wakes up failure.
It in a kind of possible embodiment, determines whether battery pack meets equilibrium condition, may comprise steps of:
If the single battery in battery pack meets the currently equilibrium of coherence request or battery failure or battery pack
Duration reaches balanced duration needed for battery pack, it is determined that battery pack meets balanced stop condition；
If the single battery in battery pack is unsatisfactory for coherence request, and battery pack fault-free, and battery pack is currently
Balanced duration needed for battery pack has not yet been reached in the duration of weighing apparatus, it is determined that battery pack is unsatisfactory for balanced stop condition.
By mentioned earlier, the corresponding coherence request of single battery can meet in advance in battery pack for the electrical parameter of battery pack
If condition.Battery management system can acquire the electrical parameter information of battery pack in each wake up, to be believed according to the electrical parameter
It ceases and determines whether the single battery in battery pack meets coherence request.Illustratively, if single battery corresponding one in battery pack
Cause property requires to be less than or equal to for the pressure difference in battery pack between highest monomer battery voltage and minimum monomer battery voltage
Second preset threshold, if the pressure when waking up between collected highest monomer battery voltage and minimum monomer battery voltage
Difference be less than or equal to the second preset threshold, then can determine that the single battery in battery pack has met coherence request, and if
Pressure difference when wake-up between collected highest monomer battery voltage and minimum monomer battery voltage is greater than the second default threshold
Value, then can determine that the single battery in battery pack is still unsatisfactory for coherence request.If the single battery in battery pack meets one
Cause property requires, and illustrates that the equilibrium of battery pack has been completed, therefore, can stop equilibrium.
Battery management system can detecte battery pack with the presence or absence of failure in each wake up.Illustratively, battery pack is detected
Whether failure can be by detecting any one or more realization in following, and detection is not limited to following a few persons: balanced
Effect, hardware state, equalizing device temperature, battery status, vehicle insulating properties.It wherein, can be with table for the detection of portfolio effect
Now for the detection to pressure drop, euqalizing current, inspection whether being shown as to hardware state normally for the detection of hardware state
It surveys, the detection to the acquisition chip temperature of battery management system can be shown as the detection of equalizing device temperature, for electricity
The detection of pond state can show as the detection to battery voltage, temperature.Illustratively, if portfolio effect is bad (for example, pressure drop
It is insufficient), determine battery failure.For another example if hardware anomalies (for example, hardware temperatures are excessively high), determine battery failure.Example again
Such as, if equalizing device temperature anomaly (for example, acquisition chip temperature is excessively high), determines battery failure.For another example battery is abnormal
(for example, battery temperature is excessively high), determines battery failure.For another example if vehicle Abnormal Insulation, determines battery failure.It needs
Illustrate, Rule of judgment can be manually set in judgement whether for battery failure, example is only done above, for others
Situation, the disclosure is without limitation.If battery failure, equilibrium can not be continued, stopped hence, it can be determined that battery pack meets equilibrium
Only condition.
If the currently balanced duration of battery pack reaches balanced duration needed for battery pack, illustrate adopting for battery management system
Collection chip has reached the sufficiently long time to the Balance route of battery pack, hence, it can be determined that battery pack meets balanced stopping item
Part.Wherein, battery pack it is currently balanced when it is a length of after electricity under vehicle, the acquisition chip of battery management system to battery pack into
The total duration of row Balance route.
Therefore, if the single battery in battery pack meets coherence request or battery failure or battery pack currently
The duration of weighing apparatus reaches balanced duration needed for battery pack, it is determined that battery pack meets balanced stop condition；And if in battery pack
Single battery is unsatisfactory for coherence request, and battery pack fault-free, and currently battery has had not yet been reached in the duration of equilibrium to battery pack
Balanced duration needed for group, it is determined that battery pack is unsatisfactory for balanced stop condition.
Using aforesaid way, using to single battery consistency judgement, battery failure whether judgement, battery pack works as
Preceding balanced duration determines whether battery pack meets balanced stop condition, meets consistency with the single battery in battery pack and wants
It asks or stops in the case that duration that battery failure or battery pack are currently balanced has reached certain time length balanced.
In a kind of possible embodiment, if battery failure, the method that the disclosure provides can also include following
Step:
If battery failure, fault message is sent to remote supervisory and control(ling) equipment.
Wherein, fault message can serve to indicate that battery failure.Illustratively, remote supervisory and control(ling) equipment can be long-range monitoring
Platform.If battery failure, fault message can be sent to entire car controller (VCU), then by entire car controller by failure
Information is sent to vehicle-mounted T-BOX, fault message is sent to remote supervisory and control(ling) equipment by vehicle-mounted T-BOX later, remotely to monitor
Equipment is alarmed to car owner.Illustratively, remote supervisory and control(ling) equipment to the held terminal alarms of car owner and can send fault message, with convinent car
Master knows battery failure, takes corresponding measure in time.
Using aforesaid way, fault message is sent to remote supervisory and control(ling) equipment in battery failure, so that car owner knows in time
Know battery failure, guarantees vehicle safety.
In step 13, if battery management system determines that battery pack is unsatisfactory for balanced stop condition when waking up, acquire
Chip continues to carry out Balance route to battery pack.
If battery management system determines that battery pack is unsatisfactory for balanced stop condition when waking up, illustrate also to need to battery pack
Balance route is carried out, therefore, acquisition chip can continue to carry out Balance route to battery pack.The mode of Balance route is hereinbefore
It has been described, does not repeat herein.
Through the above scheme, on the one hand, Balance route is carried out to battery pack using the time of suspend mode electric under vehicle, to increase
The time for balance of battery pack, so as to preferably promote the consistency of battery pack.On the other hand, equilibrium is being carried out to battery pack
During control, battery management system is periodically waken up, to detect to battery pack, thereby may be ensured that lower electrical equalization
Safety.
In alternatively possible embodiment, if battery management system determines that battery pack meets balanced stop when waking up
Condition, explanation can stop carrying out battery pack Balance route, therefore acquisition chip can stop carrying out battery pack balanced control
System.
Aforesaid way is used, if battery management system determines that battery pack meets balanced stop condition when waking up, is acquired
Chip stops carrying out Balance route to battery pack, stops the equilibrium to battery pack in time when battery pack meets balanced stop condition
Time for balance and the balanced electricity spent are saved in control.
Fig. 3 is the block diagram of the battery balanced control device provided according to an embodiment of the present disclosure.As shown in figure 3,
The device 30 may include:
Equalization control module 31, for after electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then battery management system
The acquisition chip of system carries out Balance route to the battery pack；
Determining module 32 determines whether the battery pack meets equilibrium in each wake up for the battery management system
Stop condition, wherein the battery management system is set with wake-up period, so that the battery management system can be according to described
Wake-up period periodically actively wakes up；
If the equalization control module 31 determines that the battery pack is unsatisfactory for when waking up for the battery management system
The equilibrium stop condition, then the acquisition chip continues to carry out Balance route to the battery pack.
Under vehicle before electricity, battery management system (BMS) suspend mode, battery management system can acquire the electricity ginseng of battery pack
Number information, to determine whether the battery pack needs to open equilibrium.Equalization control module 31 is after electricity under vehicle, however, it is determined that battery pack
Need to open equilibrium, then the acquisition chip of battery management system carries out Balance route to battery pack.After electricity under vehicle, cell tube
Reason system enters dormant state, since battery management system enter dormant state can timing, it is every later to call out by one
It wakes up the period, then battery management system actively wakes up, so that it is determined that module 32 can determine battery when battery management system wakes up
Whether group meets balanced stop condition.If equalization control module 31 determines that battery pack is unsatisfactory for when battery management system wakes up
Weigh stop condition, and equalization control module 31 can control acquisition chip and continue to carry out Balance route to battery pack.
Through the above scheme, on the one hand, Balance route is carried out to battery pack using the time of suspend mode electric under vehicle, to increase
The time for balance of battery pack, so as to preferably promote the consistency of battery pack.On the other hand, equilibrium is being carried out to battery pack
During control, battery management system is periodically waken up, to detect to battery pack, thereby may be ensured that lower electrical equalization
Safety.
Optionally, the equalization control module 31 includes:
Computational submodule, for the acquisition chip in the battery management system to the battery pack carry out Balance route it
Before, calculate balanced duration needed for the battery pack；
Submodule is set, if being greater than preset lower electrical equalization duration for balanced duration needed for the battery pack, for
The battery management system sets the wake-up period, wherein the wake-up period is less than the lower electrical equalization duration；
If balanced duration needed for the equalization control module 31 is used for the battery pack is less than or equal to the lower electricity
Weigh duration, then does not set the wake-up period for the battery management system.
After electricity under vehicle, before battery management system suspend mode, battery management system can acquire the electrical parameter of battery pack
Information.It, can be according to the electrical parameter information, benefit if determining that battery pack needs to open equilibrium according to the electrical parameter information of battery pack
Balanced duration needed for calculating battery pack with computational submodule.
If balanced duration needed for battery pack is greater than preset lower electrical equalization duration, submodule is set as battery management system
System setting wake-up period.If balanced duration needed for battery pack is less than or equal to lower electrical equalization duration, equalization control module 31
Without setting wake-up period for battery management system.Wherein, preset lower electrical equalization duration can be manually set, for example, not surpassing
Cross 2h.
By the above-mentioned means, when the balanced duration needed for battery pack is less than or equal to preset lower electrical equalization duration, no
Wake-up period is set for battery management system, Balance route is carried out to battery pack in the acquisition chip of further battery management system
In the process without waking up entire battery management system.Balanced duration needed for battery pack is greater than preset lower electrical equalization duration
When, wake-up period is set for battery management system, convenient for period during acquisition chip carries out Balance route to battery pack
Entire battery management system is waken up to property, to guarantee the safety in long-time balancing procedure.
Optionally, if single battery of the determining module 32 in the battery pack meets coherence request or institute
It states the currently balanced duration of battery failure or the battery pack and reaches balanced duration needed for the battery pack, it is determined that
The battery pack meets balanced stop condition；If the single battery in the battery pack is unsatisfactory for the coherence request, and institute
Battery pack fault-free is stated, and currently balanced duration needed for the battery pack has had not yet been reached in the duration of equilibrium to the battery pack,
Then determine that the battery pack is unsatisfactory for the balanced stop condition.
Using aforesaid way, using to single battery consistency judgement, battery failure whether judgement, battery pack works as
Preceding balanced duration determines whether battery pack meets balanced stop condition, meets consistency with the single battery in battery pack and wants
It asks or stops in the case that duration that battery failure or battery pack are currently balanced has reached certain time length balanced.
Optionally, described device 30 further include:
Failure sending module sends fault message, the event to remote supervisory and control(ling) equipment if being used for the battery failure
Barrier information is used to indicate the battery failure.
Fault message can serve to indicate that battery failure.Remote supervisory and control(ling) equipment can be remote monitoring platform.If battery
Group failure, then failure sending module can send fault message to entire car controller (VCU), then by entire car controller by failure
Information is sent to vehicle-mounted T-BOX, fault message is sent to remote supervisory and control(ling) equipment by vehicle-mounted T-BOX later, remotely to monitor
Equipment is alarmed to car owner.Illustratively, remote supervisory and control(ling) equipment to the held terminal alarms of car owner and can also send fault message, so as to
Car owner knows battery failure, takes corresponding measure in time.
Using aforesaid way, fault message is sent to remote supervisory and control(ling) equipment in battery failure, so that car owner knows in time
Know battery failure, guarantees vehicle safety.
Optionally, described device 30 further include:
Judgment module judges whether to receive long-range monitoring if actively waking up failure for the battery management system
The wake up instruction that equipment is sent, wherein the remote supervisory and control(ling) equipment reaches in the sleep time for determining the battery management system
In the case where preset suspend mode tolerance duration, Xiang Suoshu battery management system sends the wake up instruction, wherein the suspend mode is held
Duration is born greater than the wake-up period；
Wake-up module executes wake operation for the wake up instruction in response to receiving.
If battery management system actively wakes up failure, battery management system can also be waken up by way of Remote Wake Up.
In the case where the sleep time of battery management system reaches preset suspend mode tolerance duration, remote supervisory and control(ling) equipment is to battery management
System sends wake up instruction.Wherein, suspend mode tolerance duration be greater than wake-up period, and suspend mode tolerance the period be less than lower electrical equalization when
It is long.
It can also be set by remotely monitoring using aforesaid way in the case where battery management system actively wakes up failure
It is standby that battery management system is waken up, it avoids the occurrence of battery management system and actively wakes up failure and cause that cell tube can not be waken up
The case where reason system.
And if the mode of Remote Wake Up can not still wake up battery management system, remote supervisory and control(ling) equipment can also be to car owner's end
End sends prompting message, which is used to indicate battery management system and wakes up failure.
Optionally, if the equalization control module 31 is also used to the battery management system and determines the battery when waking up
Group meets the balanced stop condition, then the acquisition chip stops carrying out Balance route to the battery pack.
If battery management system determines that battery pack meets balanced stop condition when waking up, equalization control module 31 can be controlled
Acquisition chip processed can carry out Balance route to battery pack.
Aforesaid way is used, if battery management system determines that battery pack meets balanced stop condition when waking up, is acquired
Chip stops carrying out Balance route to battery pack, stops the equilibrium to battery pack in time when battery pack meets balanced stop condition
Time for balance and the balanced electricity spent are saved in control.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
Fig. 4 is the block diagram of the battery management system provided according to an embodiment of the present disclosure.The battery management system
40 may include:
Battery pack 41；
Acquisition chip 42；
Battery balanced control device 43 provided by disclosure any embodiment.
Pass through above system, on the one hand, Balance route is carried out to battery pack using the time of suspend mode electric under vehicle, to increase
The time for balance of battery pack, so as to preferably promote the consistency of battery pack.On the other hand, equilibrium is being carried out to battery pack
During control, battery management system is periodically waken up, to be detected to battery pack, thereby may be ensured that electric under vehicle
Balanced safety.
The disclosure also provides a kind of vehicle, including battery management system provided by disclosure any embodiment.
The time that the vehicle can use lower electric suspend mode carries out Balance route to battery pack, when equilibrium to increase battery pack
Between, so as to preferably promote the consistency of battery pack, also, during balancing battery group, battery management system quilt
It periodically wakes up, to be detected to battery pack, to can guarantee the safety of electrical equalization under vehicle.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of battery balanced control method, which is characterized in that the described method includes:
After electricity under vehicle, however, it is determined that battery pack needs to open equilibrium, then the acquisition chip of battery management system is to the battery
Group carries out Balance route；
The battery management system determines whether the battery pack meets balanced stop condition in each wake up, wherein described
Battery management system is set with wake-up period, so that the battery management system can be according to the wake-up period periodicity landlord
It is dynamic to wake up；
If the battery management system determines that the battery pack is unsatisfactory for the balanced stop condition, the acquisition when waking up
Chip continues to carry out Balance route to the battery pack.
2. the method according to claim 1, wherein the battery management system acquisition chip to the electricity
Before pond group carries out the step of Balance route, the method also includes:
Calculate balanced duration needed for the battery pack；
If balanced duration needed for the battery pack is greater than preset lower electrical equalization duration, for battery management system setting
The wake-up period, wherein the wake-up period is less than the lower electrical equalization duration；
It is not the battery management system if balanced duration needed for the battery pack is less than or equal to the lower electrical equalization duration
System sets the wake-up period.
3. according to the method described in claim 2, it is characterized in that, whether the determination battery pack meets balanced stopping item
Part, comprising:
If the single battery in the battery pack meets coherence request or the battery failure or the battery pack is current
Balanced duration reaches balanced duration needed for the battery pack, it is determined that the battery pack meets balanced stop condition；
If the single battery in the battery pack is unsatisfactory for the coherence request, and the battery pack fault-free, and the electricity
Balanced duration needed for the battery pack has not yet been reached in group currently balanced duration in pond, it is determined that the battery pack is unsatisfactory for institute
State balanced stop condition.
4. according to the method described in claim 3, it is characterized in that, the method also includes:
If the battery failure, fault message is sent to remote supervisory and control(ling) equipment, the fault message is used to indicate the electricity
Pond group failure.
5. the method according to claim 1, wherein the method also includes:
If the battery management system actively wakes up failure, judge whether that the wake-up for receiving remote supervisory and control(ling) equipment transmission refers to
It enables, wherein the remote supervisory and control(ling) equipment is when the sleep time for determining the battery management system reaches preset suspend mode tolerance
In the case where length, Xiang Suoshu battery management system sends the wake up instruction, wherein the suspend mode tolerance duration is greater than described call out
It wakes up the period；
In response to the wake up instruction received, wake operation is executed.
6. method according to any one of claims 1-5, which is characterized in that the method also includes:
If the battery management system determines that the battery pack meets the balanced stop condition, the acquisition core when waking up
Piece stops carrying out Balance route to the battery pack.
7. a kind of battery balanced control device, which is characterized in that described device includes:
Equalization control module, for after electricity under vehicle, however, it is determined that battery pack needs to open balanced, then battery management system is adopted
Collect chip and Balance route is carried out to the battery pack；
Determining module determines whether the battery pack meets balanced stopping item in each wake up for the battery management system
Part, wherein the battery management system is set with wake-up period, so that the battery management system can be according to the wake-up week
Phase periodically actively wakes up；
If the equalization control module for the battery management system wake up when determine the battery pack be unsatisfactory for it is described
Weigh stop condition, then the acquisition chip continues to carry out Balance route to the battery pack.
8. device according to claim 7, which is characterized in that the equalization control module includes:
Computational submodule, before carrying out Balance route to the battery pack for the acquisition chip in the battery management system,
Calculate balanced duration needed for the battery pack；
Submodule is set, is described if being greater than preset lower electrical equalization duration for balanced duration needed for the battery pack
Battery management system sets the wake-up period, wherein the wake-up period is less than the lower electrical equalization duration；
If balanced duration needed for the equalization control module is used for the battery pack is less than or equal to the lower electrical equalization duration,
Then the wake-up period is not set for the battery management system.
9. a kind of battery management system, which is characterized in that the system comprises:
Battery pack；
Acquisition chip；
Battery balanced control device described in claim 7 or 8.
10. a kind of vehicle, which is characterized in that the vehicle includes battery management system as claimed in claim 9.
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| CN201910087126.XA CN109823232A (en) | 2019-01-29 | 2019-01-29 | Battery balanced control method, device, battery management system and vehicle |
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| CN201910087126.XA CN109823232A (en) | 2019-01-29 | 2019-01-29 | Battery balanced control method, device, battery management system and vehicle |
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Application publication date: 20190531 |