CN107554344B - The method for managing charge/discharge and system of double source battery pack - Google Patents
The method for managing charge/discharge and system of double source battery pack Download PDFInfo
- Publication number
- CN107554344B CN107554344B CN201710842505.6A CN201710842505A CN107554344B CN 107554344 B CN107554344 B CN 107554344B CN 201710842505 A CN201710842505 A CN 201710842505A CN 107554344 B CN107554344 B CN 107554344B
- Authority
- CN
- China
- Prior art keywords
- discharge
- battery pack
- main battery
- bag
- converters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title abstract description 10
- 238000007726 management method Methods 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000005611 electricity Effects 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of method for managing charge/discharge and system of double source battery pack, and electric discharge management method includes receiving discharge signal；Control main battery unwraps beginning electric discharge；The relevant parameter of detection main battery bag in real time；Judge the remaining capacity and/or discharge voltage of main battery bag：When the remaining capacity of main battery bag is more than the first power threshold, and discharge voltage is more than the discharge cut-off voltage of main battery bag, control DC/DC converters do not work, the electric discharge of main battery bag；When the remaining capacity of main battery bag is less than the first power threshold, or discharge voltage is less than or equal to the discharge cut-off voltage of main battery bag, control DC/DC converters are started to work, and auxiliary battery pack starts to discharge；Detect and judge the discharge voltage of auxiliary battery pack, and terminate to discharge when it reaches discharge cut-off voltage.The present invention is realized effective management to discharge and recharge, is avoided improper use and damaged caused by battery pack by the reasonable control to DC/DC converters.
Description
Technical field
The present invention relates to the power battery field of electric automobile, more particularly to a kind of double source battery for possessing and increasing Cheng Gongneng
The method for managing charge/discharge and system of bag.
Background technology
Global evolution is swift and violent at present by pure electric automobile EV (Electric Vehicle), by the shadow of orthodox car driving habit
Ring, the requirement to the long continual mileage of electric automobile EV is increasingly becoming main trend, such as tesla Model-S long continual mileage versions
Most high-purity electric nearly 500 kilometers of distance travelled, masses also declare the following electric automobile EV released more than 400km.
In order to meet long continual mileage requirement, the electrokinetic cell system (Battery Pack) of electric automobile configuration needs more
Large capacity, generally more than 50kWh.Battery system cost, battery pack take up space all to the system of electric automobile in vehicle installation
Make and propose sizable challenge.
At present, electric automobile generally solves the requirement of big Electronic power batteries bag using two ways：
First, the capacity of increase single battery core, as Samsung releases 96Ah ternary lithium ion batteries.Although add monomer electricity
The capacity of core, but the increase of its capacity will certainly bring the increase of space occupancy rate, so can also restrict vehicle battery significantly
The utilization rate in space, also, when designing battery pack, the single battery core of large capacity is not easy to be optionally combined, this causes battery pack
Expansibility be deteriorated, different continual mileage demands can not be adapted to.
Second, the single battery core using substantial amounts of low capacity：Such as the battery pack scheme of tesla, it is based on low capacity electricity
Core 18650, using up to ten thousand, the low capacity battery core is combined, and the requirement of big Electronic power batteries bag is solved with this.Up to ten thousand lists
Body battery core is optionally combined, certainly will using substantial amounts of single battery core although solving the problems, such as large capacity and easy to combine
Cause the reduction of the overall security and reliability of battery pack.
Also, whether using any of both the above scheme, in order to ensure the service life of vehicle, for single battery core
The requirement of reliability is high, and the cost for so also resulting in the integral battery door bag of electric automobile is difficult to control.
And in the integral vehicle cost of electric automobile EV, the cost of power battery packet system accounts for 40-70%.By current battery
Battery core calculation of price, the 50% of the integral vehicle cost that power battery pack cost mostly can be more than electric automobile EV.With based on fuel oil
Orthodox car is compared, and electric automobile EV has no cost advantage, so as to constrain the market acceptance of electric automobile EV significantly.
Also, while the battery pack to electric automobile is improved, how to realize the management of charging and discharging to battery pack
Also become the problem of those skilled in the art are of interest.
The content of the invention
In view of the foregoing deficiencies of prior art, it is an object of the invention to provide a kind of discharge and recharge of double source battery pack
Management method and system, the battery pack cost for solving electric automobile in the prior art is excessive, and how to battery pack into
The problem of row reasonable management of charging and discharging.
In order to achieve the above objects and other related objects, the present invention provides a kind of electric discharge management method of double source battery pack,
The double source battery pack is applied to electric automobile, including main battery bag, auxiliary battery pack, DC/DC converters and control unit, described
The first end and second end of DC/DC converters is connected to total anode of the auxiliary battery pack and total negative terminal, the 3rd end difference
Be connected with total anode of the main battery bag and total positive output end of the double source battery pack, the 4th end respectively with the main battery
Total negative terminal of bag is connected with total negative output terminal of the double source battery pack, so as to form the main battery bag and the auxiliary battery pack
Discharge and recharge path；And the electric discharge management method of the double source battery pack is applied to described control unit, including：Reception comes from
The discharge signal of the electric automobile；The main battery is controlled to unwrap beginning electric discharge；Wherein, before electric discharge is started, external master is returned
Road is into line precharge；The relevant parameter of the main battery bag is detected in real time, wherein, the relevant parameter includes：Discharge voltage, put
Electric current and/or remaining capacity；Judge the remaining capacity and/or discharge voltage of the main battery bag：When the main battery bag
Remaining capacity is more than the first power threshold, and when discharge voltage is more than the discharge cut-off voltage of the main battery bag, described in control
The DC/DC converters of double source battery pack do not work, the main battery bag electric discharge；When the remaining capacity of the main battery bag is less than institute
State the first power threshold, or when discharge voltage is less than or equal to the discharge cut-off voltage of the main battery bag, control the DC/DC to turn
Parallel operation is started to work, and the auxiliary battery pack takes over the main battery and unwraps beginning electric discharge；Detect and judge putting for the auxiliary battery pack
Whether piezoelectric voltage reaches its discharge cut-off voltage：If so, then terminate to discharge；If not, continue to discharge.
In one embodiment of the invention, the control main battery, which is unwrapped, to be begun to include the step of electric discharge：To described double
Source battery bag carries out self-test：If self-detection result is abnormal, failure is prompted；If self-detection result is normal, the master is detected
Whether the state of battery pack and the auxiliary battery pack is normal：If abnormal, failure is prompted；If normal, the master is controlled
Battery pack starts to discharge.
In one embodiment of the invention, the electric discharge management method further includes：The master is taken in the auxiliary battery pack
When battery pack starts electric discharge, the discharge power that the auxiliary battery pack exports after DC/DC converters conversion is detected and judged：
When the discharge power of output is more than the required power of the electric automobile, then the DC/DC converters are controlled so that described auxiliary
The electric discharge of battery pack is also charged after the DC/DC converters conversion while electric discharge for the main battery bag；When defeated
When the discharge power gone out is equal to the required power of the electric automobile, then the DC/DC converters are controlled so that the auxiliary battery
Bag only discharges；When the discharge power is less than the required power of the electric automobile, then the DC/DC converters are controlled
The rated power that the discharge power of the auxiliary battery pack is converted to the auxiliary battery pack is exported, and controls the main battery
Electric discharge is supplemented bag at the same time.
In one embodiment of the invention, the electric discharge management method further includes：The master is taken in the auxiliary battery pack
When battery pack starts electric discharge, the relevant parameter of the main battery bag is detected；Judge whether the remaining capacity of the main battery bag is big
In default second power threshold：If it is greater, then controlling the DC/DC converters to be stopped, the main battery unwraps the beginning
Electric discharge；If less than the second power threshold, then the DC/DC controllers still work, and the auxiliary battery pack continues to discharge；Its
In, first power threshold is less than second power threshold.
The invention also discloses a kind of charging management method of double source battery pack, the double source battery pack is applied to electronic vapour
Car, including main battery bag, auxiliary battery pack, DC/DC converters and control unit, the first end and second of the DC/DC converters
End is connected to total anode of the auxiliary battery pack and total negative terminal, the 3rd end total anode with the main battery bag and institute respectively
The total positive output end for stating double source battery pack is connected, the 4th end total negative terminal with the main battery bag and the double source battery pack respectively
Total negative output terminal be connected, so as to form the discharge and recharge path of the main battery bag and the auxiliary battery pack；And the double source electricity
The charging management method of Chi Bao is applied to described control unit, including：Receive the charging signals for coming from the electric automobile；With
Charging equipment establishes connection, charges to the main battery bag, wherein, before electric discharge is started, external major loop is carried out pre-
Charging；The relevant parameter of the main battery bag is detected in real time, and judges whether the relevant parameter of the main battery bag reaches described
The charging termination condition of main battery bag：If not, continue to charge；If so, then stopping the charging to the main battery bag, institute is controlled
The start-up operation of DC/DC converters is stated, is charged to the auxiliary battery pack, until detecting the relevant parameter of the auxiliary battery pack
Reach the charging termination condition of the auxiliary battery pack；Wherein, the relevant parameter includes charging voltage, charging current and/or remains
Remaining electricity.
In one embodiment of the invention, described reception the step of coming from the charging signals of the electric automobile, also wraps
Include：Self-test is carried out to the double source battery pack：If self-detection result is abnormal, failure is prompted；If self-detection result is normal,
Whether the state for detecting the main battery bag and the auxiliary battery pack is normal：If abnormal, failure is prompted；If normal,
Continue.
In one embodiment of the invention, described established with charging equipment connects, and charges to the main battery bag
Step includes：Established and connected using Handshake Protocol and the charging equipment；The main battery bag is controlled externally into line precharge；
Charge again to the main battery bag after preset time.
The invention discloses a kind of management of charging and discharging system of double source battery pack, the double source battery pack is applied to electronic vapour
Car, including main battery bag, auxiliary battery pack, DC/DC converters and control unit, the first end and second of the DC/DC converters
End is connected to total anode of the auxiliary battery pack and total negative terminal, the 3rd end total anode with the main battery bag and institute respectively
The total positive output end for stating double source battery pack is connected, the 4th end total negative terminal with the main battery bag and the double source battery pack respectively
Total negative output terminal be connected, so as to form the discharge and recharge path of the main battery bag and the auxiliary battery pack；And the double source electricity
The management of charging and discharging system of Chi Bao is applied to described control unit, including：Receiving module, comes from the electronic vapour for receiving
The charging signals and discharge signal of car；Connection establishment module, connects for being established with charging equipment, with to the main battery bag
And/or the auxiliary battery pack charges；Detection module, for detecting the main battery bag and/or the auxiliary battery pack in real time
Relevant parameter；Wherein, the relevant parameter includes：Remaining capacity, charging voltage, charging current, discharge voltage, electric discharge electricity
Stream, the charging equipment are after DC/DC converters conversion to the charge power of the auxiliary battery pack input and described auxiliary
The discharge power that battery pack exports after DC/DC converters conversion；Judgment module, for according to the first power threshold, the
Two power thresholds, the charging termination condition of the main battery bag and discharge cut-off voltage, the charging termination bar of the auxiliary battery pack
The required power of part and discharge cut-off voltage and the electric automobile, judges testing result；Control module, is used for
According to the judging result of the judgment module, the discharge and recharge of the main battery bag is controlled, and by controlling the DC/DC to change
The working status of device, realizes the control of the discharge and recharge to the auxiliary battery pack；Memory module, for preserving the first electricity threshold
Value, second power threshold, the charging termination condition of the main battery bag and discharge cut-off voltage and the auxiliary battery pack
Charging termination condition and discharge cut-off voltage.
In one embodiment of the invention, the detection module is additionally operable to carry out self-test to the double source battery pack, and
Whether the state for detecting the main battery bag and the auxiliary battery pack is normal.
In one embodiment of the invention, the management of charging and discharging system of the double source battery pack further includes：Reminding module, is used
When breaking down in testing result, fault cues are carried out.
As described above, the method for managing charge/discharge and system of the double source battery pack of the present invention, turn applied to DC/DC is employed
The control unit of the double source battery pack of parallel operation, by the reasonable control to DC/DC converters, realizes to whole double source battery pack
Discharge and recharge effective management, ensure that the normal use of double source battery pack, avoid improper use and double source battery pack is caused
Infringement.
Brief description of the drawings
Fig. 1 is shown as the method for managing charge/discharge and the system double source battery pack that is applicable in of the double source battery pack of the present invention
Structure diagram.
Fig. 2 is shown as the flow diagram of the electric discharge management method of double source battery pack disclosed by the embodiments of the present invention.
Fig. 3 is shown as the flow diagram of the charging management method of double source battery pack disclosed by the embodiments of the present invention.
Fig. 4 is shown as the theory structure signal of the management of charging and discharging system of double source battery pack disclosed by the embodiments of the present invention
Figure.
Component label instructions
110 main battery bags
120 first switch units
210 auxiliary battery packs
220 DC/DC converters
310 the 3rd switch elements
400 control units
S21-S25, S31-S33 step
510 receiving modules
520 connection establishment modules
530 monitoring modulars
540 judgment modules
550 control modules
560 reminding modules
570 memory modules
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the case where there is no conflict, following embodiments and implementation
Feature in example can be mutually combined.
Refer to attached drawing.It should be noted that the diagram provided in following embodiments only illustrates this hair in a schematic way
Bright basic conception, then in schema only the display component related with the present invention rather than component count during according to actual implementation,
Shape and size are drawn, and kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its component
Being laid out kenel may also be increasingly complex.
The present invention provides a kind of double source battery pack for being exclusively used in including DC/DC converters method for managing charge/discharge and be
System, and DC/DC converters are controlled and change for the discharge and recharge to the auxiliary battery pack in double source battery pack.Due to adopting
It can greatly reduce the cost of the double source battery pack applied to electric automobile with DC/DC converters, but the thing followed, for
The reasonable management of whole double source battery pack just becomes urgent problem to be solved.The management of charging and discharging of the double source battery pack of the present invention
Method and system makes full use of main battery bag and the basic parameter of auxiliary battery pack (remaining capacity, charging termination condition, electric discharge cut-off
Voltage etc.), by the control to DC/DC converters, realize to the main battery bag of whole double source battery pack and auxiliary battery pack
The reasonable management of discharge and recharge.
Wherein, the double source battery pack that is applicable in of the present invention as shown in Figure 1, including：Main battery bag 110, auxiliary battery pack 210,
First switch unit K11 and K12, DC/DC converter 220, the 3rd switch element K31, control unit 400.It should be noted that
Double source battery pack used in the present invention is not necessarily to include first switch unit and the 3rd switch element, as long as auxiliary battery pack
It is to realize the double source battery pack of the control of the discharge and recharge to auxiliary battery pack in the suitable of the present invention by DC/DC converters 220
In the range of.In addition, first switch unit K11 and K12 shown in Fig. 1, and the 3rd switch element K31 using opening firmly
Close, the double source battery pack that the present invention is applicable in is not limited to that, as long as first switch unit can be realized to main battery bag
Discharge and recharge path clustering, the 3rd switch element, which can be realized, is controlled i.e. the discharge and recharge path of main battery bag and auxiliary battery pack
Can.First switch unit and the 3rd switch element can also be realized using Sofe Switch.
The first end and second end of DC/DC converters 220 is connected to total anode of auxiliary battery pack 210 and total negative terminal,
Total positive output end OUT1 of 3rd end respectively with total anode and double source battery pack of main battery bag 110 is connected, the 4th end respectively with
Total negative terminal of main battery bag 110 is connected with total negative output terminal OUT2 of double source battery pack, forms main battery bag 110 and auxiliary battery
The discharge and recharge path of bag 210.
Main battery bag 110 and auxiliary battery pack 210 can both use the battery pack of identical battery core standard, can also use difference
The battery pack of battery core standard.Also, the battery core standard for the battery pack being previously mentioned in the present embodiment includes but not limited to：Shape shape
State, material, rated voltage, capacity, production time etc..
First switch unit K11 and K12 are used for the charge and discharge for controlling main battery bag 110.3rd switch element K31 is used for
The discharge and recharge to main battery bag 110 and auxiliary battery pack 210 is managed at the same time so that discharge and recharge path is safer.
DC/DC converters 220 are a switch power modules, by by the boost in voltage of auxiliary battery pack 210 or being depressured to
In the operating voltage range of main battery bag 110, and externally discharge；It also can be by the input voltage of double source battery pack at the same time
In operating voltage range by boosting or being depressured to auxiliary battery pack 210, and charge to auxiliary battery pack 210.
In the case that first switch unit K11 is closed, and the 3rd switch element K31 is closed, main battery bag 110 filled,
Electric discharge；It is in running order in DC/DC converters 220, and the 3rd switch element K31 close in the case of auxiliary battery pack 210 into
Row charge and discharge.
Control unit 400 is used for disconnection and the closure for controlling first switch unit K11 and K12 and the 3rd switch element K31,
And the working status of control DC/DC converters 220, so as to control the discharge and recharge of main battery bag 110 and/or auxiliary battery pack 210.
Embodiment 1
As shown in Fig. 2, the electric discharge management method of the double source battery pack of the present embodiment, applied to the double source battery shown in Fig. 1
The control unit 400 of bag, including：
Step S21, receives the discharge signal for coming from electric automobile；
Since the control unit of double source battery pack is the other relevant devices with electric automobile, such as entire car controller VCU
It is connected by CAN network, therefore it can receive the control signal for coming from electric automobile, including discharge signal.
Step S22, controls the main battery to unwrap beginning electric discharge；
Specifically include：
Self-test is carried out to double source battery pack：
If self-detection result is abnormal, failure is prompted；
If self-detection result is normal, main battery bag can be directly controlled and discharged.
Further, the double source battery pack that Fig. 1 is provided is a kind of relatively common structure, during actual use, it is main
Battery pack and auxiliary battery pack can be respectively in different battery pack storehouses, i.e., main battery bag is located at main battery bag storehouse, auxiliary battery
Bag is located at auxiliary battery pack storehouse；Even, the auxiliary battery pack storehouse for including auxiliary battery pack is detachably accepted in electric automobile
's.In this case, the state for main battery bag and auxiliary battery pack will also carry out a detection, if the results abnormity of detection
If, it can also carry out fault cues；If testing result is normal, control main battery bag discharges.
In addition, in order to protect the capacitive load in the external major loop of double source battery pack, before main battery bag is discharged,
The precharge of preset time is carried out to external major loop by main battery bag.
For double source battery pack as shown in Figure 1, the control of the electric discharge for main battery bag 110 is by first switch list
What first K11 and K12 and the 3rd switch element K31 were realized：First, the 3rd switch element K31 is closed, and is closed after 50ms
First switch unit K12, at this time, by main battery bag 110 to external major loop into line precharge；Then, after 500ms, closure
First switch unit K11, and first switch unit K12 is disconnected, at this time, main battery bag 110 then starts to discharge.
Step S23, detects the relevant parameter of the main battery bag in real time, wherein, relevant parameter includes but not limited to：Electric discharge
Voltage, discharge current and/or remaining capacity；
It is well known that battery pack is all the electricity for having it to fix, if the electricity of battery pack all given out light during electric discharge,
The service life of battery pack can be largely effected on, and irreversible infringement is caused to battery pack.Similarly, if discharge voltage is less than electric discharge
Blanking voltage, also can severe attrition battery service life.Therefore, when carrying out electric discharge management, it is necessary to electric to the residue of main battery bag
Amount and discharge voltage are detected.
Obtained it should be noted that remaining capacity is not direct detection, it is the voltage of the battery pack detected, electricity
Stream and temperature etc. calculate what is obtained.Due to the calculating and voltage of battery pack for remaining capacity, electric current and temperature
Detection is technology well-known to those skilled in the art, is just repeated no more herein.
Step S24, judges the remaining capacity and/or discharge voltage of the main battery bag：
When the remaining capacity of the main battery bag is more than the first power threshold, and discharge voltage is more than the main battery bag
During discharge cut-off voltage, the DC/DC converters of the double source battery pack are controlled not work, the main battery bag electric discharge；
When the remaining capacity of the main battery bag is less than first power threshold, or less than or equal to the main battery bag
During discharge cut-off voltage, the DC/DC converters are controlled to start to work, the auxiliary battery pack, which takes over the main battery and unwraps the beginning, puts
Electricity.
In the present embodiment, first power threshold has been preset, which is main battery bag in order to prevent
Over-discharge, similarly, by discharge voltage compared with the discharge cut-off voltage of main battery bag, be also in order at such a mesh
's.Preferably, in the present embodiment, the first power threshold is arranged to the 10% of whole electricity of main battery bag.
Since the electric discharge management of the double source battery pack of the present embodiment is to be applied to electric automobile.Also, electric automobile is big
It is the driving phase in an even pace when part；Occur once in a while or boost phase.Main battery bag and auxiliary battery
Even pace's driving that electric automobile is dealt with the electric discharge of bag has no problem completely, still, in the acceleration for accidentally occurring
Situation, the electric discharge of main battery bag is completely satisfiable, still, due to the main electricity of the targeted double source battery pack of the present embodiment
Chi Bao and auxiliary battery pack use the battery pack of different battery core standards, so, auxiliary battery pack is possible to not meet electric automobile
Acceleration request.
For such a situation, in the present embodiment, when auxiliary battery pack takes over main battery bag and discharged, auxiliary battery can be detected
The discharge power exported after the conversion of DC/DC converters is wrapped, also, the discharge power is also not that direct detection obtains, usually
In the case of be by detecting auxiliary battery pack voltage and current for exporting after the conversion of DC/DC converters, then being obtained using detection
Voltage and current calculate output discharge power.
When the discharge power of output is more than the required power of electric automobile, that is to say, that auxiliary battery pack is except that can meet
Outside the required electric energy of electric automobile, the electric energy of a part can also be additionally exported.Therefore, in the present embodiment, by this part
Electric energy is also utilized：Control DC/DC converters so that the electric discharge of auxiliary battery pack is being discharged after the conversion of DC/DC converters
While also charge for main battery pack；
When the discharge power of output is equal to the required power of electric automobile, then the DC/DC converters are controlled so that auxiliary
Battery pack is only discharged, to meet the energy requirement of electric automobile；
When discharge power is less than the required power of electric automobile, then DC/DC converters are controlled by the electric discharge of auxiliary battery pack
The rated power of battery pack is exported supplemented by power conversion, and is controlled main battery bag while discharged and supplemented.
By the accurate control to DC/DC converters, it can meet energy need of the electric automobile under different service conditions
Ask, ensure that the normal use of electric automobile.
Since main battery bag can meet the energy requirement under electric automobile difference service condition, the present embodiment is also
Including：
When the remaining capacity that detection calculates main battery bag is more than default second power threshold, control DC/DC conversions
Device is stopped, and is discharged by main battery bag；Otherwise, then DC/DC converters work on, and are still put by auxiliary battery pack
Electricity.Wherein, the second power threshold is more than the first power threshold；Preferably, in the present embodiment, electricity based on the setting of the second power threshold
The 40% of Chi Bao whole electricity.
Step S25, detects and judges whether the discharge voltage of the auxiliary battery pack reaches discharge cut-off voltage：
If so, then terminate to discharge；If not, continue to discharge.
As it was previously stated, if the discharge voltage of battery pack has reached discharge cut-off voltage it is necessary to terminate the electric discharge of battery pack
Operation, protection battery pack will not lose the service life because of over-discharge.
Embodiment 2
Present embodiment discloses a kind of charging management method of double source battery pack, applied to the double source battery pack shown in Fig. 1
Control unit 400.As shown in figure 3, including：
Step S31, receives the charging signals for coming from electric automobile；
Since the control unit of double source battery pack is the other relevant devices with electric automobile, such as entire car controller VCU
It is connected by CAN network, therefore it can receive the control signal for coming from electric automobile, including charging signals.
It is identical with the electric discharge management of double source battery pack after charging signals are received, also need for double source battery pack into
Row self-test, and the state of main battery bag and auxiliary battery pack is detected, if all gone well, step S32 is continued to execute,
Otherwise, then failure is prompted.
Step S32, establishes with charging equipment and connects, charge to the main battery bag：
Due to charging equipment is independently of double source battery pack and existing external equipment, carrying out double source battery pack
Charging when, it is necessary to establish and connect with exterior charging equipment.In the present embodiment, double source battery pack be by Handshake Protocol with
Charging equipment establishes connection.Also, if establishing connection failure, it can also prompt failure.
, be by before main battery bag is discharged in order to protect the capacitive load in the external major loop of double source battery pack
Main battery bag carries out external major loop the precharge of preset time.
For double source battery pack as shown in Figure 1, the charge control for main battery bag 110 is by first switch unit
What K11 and K12 and the 3rd switch element K31 was realized：First, the 3rd switch element K31 is closed, and closes after 50ms the
One switch element K12, at this time, main battery bag 110 is to external major loop into line precharge；Then, after 500ms, closure first
Switch element K11, and first switch unit K12 is disconnected, at this time, external equipment starts to charge to main battery bag 110.
Step S33, detects the relevant parameter of the main battery bag in real time, and judges that the relevant parameter of the main battery bag is
The no charging termination condition for reaching the main battery bag：
If not, continue to charge；
If so, then stopping the charging to main battery bag, control DC/DC converters start to work, auxiliary battery pack are filled
Electricity, until the relevant parameter of the auxiliary battery pack of detection reaches the charging termination condition of its charging.Wherein, relevant parameter is included but not
It is limited to charging voltage, charging current and/or remaining capacity.
Main battery bag and auxiliary battery pack overcharge the battery life for influencing main battery bag and/or auxiliary battery pack in order to prevent,
Therefore, it is necessary to be detected to the charging voltage of main battery bag and auxiliary battery pack, once charging voltage reaches charging termination condition,
Then stop charging to main battery bag and/or auxiliary battery pack.
The step of various methods divide above, be intended merely to describe it is clear, can be merged into when realizing a step or
Some steps are split, are decomposed into multiple steps, as long as including identical logical relation, all protection domain in this patent
It is interior；To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed
Core design with flow is all in the protection domain of the patent.
Embodiment 3
Present embodiment discloses a kind of management of charging and discharging system of double source battery pack, applied to the double source battery shown in Fig. 1
The control unit 400 of bag.As shown in figure 4, including：
Receiving module 510, the charging signals and discharge signal of electric automobile are come from for receiving；
Connection establishment module 520, connects for being established with exterior charging equipment, so as to main battery bag and/or auxiliary electricity
Chi Bao charges；
Computing module 530 is detected, for detecting main battery bag and/or the relevant parameter of auxiliary battery pack in real time；Wherein, it is related
Parameter includes but not limited to：Remaining capacity, charging voltage, charging current, discharge voltage, discharge current, the charging equipment of outside
The charge power and auxiliary battery pack inputted after the conversion of DC/DC converters to auxiliary battery pack is defeated after the conversion of DC/DC converters
The discharge power gone out.Wherein, remaining capacity, exterior charging equipment input after the conversion of DC/DC converters to auxiliary battery pack
What the discharge power and indirect detection that charge power and auxiliary battery pack export after the conversion of DC/DC converters obtained, it is logical
Cross voltage, electric current and temperature of the battery pack detected etc. and calculate what is obtained.Due to the calculating for remaining capacity, input
Charge power and the calculating of discharge power of output be technology well-known to those skilled in the art, it is just no longer superfluous herein
State.
Judgment module 540, for according to the first power threshold, the second power threshold, the charging termination condition of main battery bag
It is right with discharge cut-off voltage, the charging termination condition of auxiliary battery pack and the required power of discharge cut-off voltage and electric automobile
The detection technique result of calculation of detection module 530 is judged；
Control module 550, for the judging result according to judgment module 540, controls the discharge and recharge of main battery bag, Yi Jitong
The working status of control DC/DC converters is crossed, realizes the control of the discharge and recharge to auxiliary battery pack；
Reminding module 560, for when testing result breaks down, giving fault cues；
Memory module 570, for preserving the first power threshold, the second power threshold, the charging termination condition of main battery bag
With discharge cut-off voltage and the charging termination condition and discharge cut-off voltage of auxiliary battery pack.
In addition, in order to protrude the innovative part of the present invention, will not be proposed by the invention with solution in the present embodiment
The less close module of technical problem relation introduces, but this is not intended that in the present embodiment that there is no other modules.
Moreover, it is not difficult to find that the present embodiment be with first embodiment or the corresponding system embodiment of second embodiment,
The present embodiment can work in coordination implementation with first embodiment or second embodiment.Carried in first embodiment or second embodiment
The relevant technical details arrived are still effective in the present embodiment, and in order to reduce repetition, which is not described herein again.Correspondingly, this implementation
The relevant technical details mentioned in example are also applicable in first embodiment or second embodiment.
In conclusion the method for managing charge/discharge and system of the double source battery pack of the present invention, turn applied to DC/DC is employed
The control unit of the double source battery pack of parallel operation, by the reasonable control to DC/DC converters, realizes to whole double source battery pack
Discharge and recharge effective management, ensure that the normal use of double source battery pack, avoid improper use and double source battery pack is caused
Infringement.So the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (3)
- A kind of 1. electric discharge management method of double source battery pack, it is characterised in that：The double source battery pack is applied to electric automobile, bag Include main battery bag, auxiliary battery pack, DC/DC converters and control unit, the first end and second end difference of the DC/DC converters It is connected to total anode of the auxiliary battery pack and total negative terminal, the 3rd end total anode with the main battery bag and the double source respectively Total positive output end of battery pack is connected, and the 4th end is born with total negative terminal of the main battery bag and the total of the double source battery pack respectively Output terminal is connected, so as to form the discharge and recharge path of the main battery bag and the auxiliary battery pack；And the double source battery pack Electric discharge management method is applied to described control unit, including：Receive the discharge signal for coming from the electric automobile；The main battery is controlled to unwrap beginning electric discharge；Wherein, before electric discharge is started, to external major loop into line precharge；The relevant parameter of the main battery bag is detected in real time, wherein, the relevant parameter includes：Discharge voltage, discharge current and/ Or remaining capacity；Judge the remaining capacity and/or discharge voltage of the main battery bag：When the remaining capacity of the main battery bag is more than the first power threshold, and discharge voltage is more than the electric discharge of the main battery bag During blanking voltage, the DC/DC converters of the double source battery pack are controlled not work, the main battery bag electric discharge；When the remaining capacity of the main battery bag is less than first power threshold, or discharge voltage is less than or equal to the main battery During the discharge cut-off voltage of bag, the DC/DC converters are controlled to start to work, the auxiliary battery pack is taken over the main battery and unwrapped Begin to discharge；Detect and judge whether the discharge voltage of the auxiliary battery pack reaches its discharge cut-off voltage：If so, then terminate to discharge；Such as It is no, then continue to discharge；The electric discharge management method further includes：The main battery, which is taken over, in the auxiliary battery pack unwraps beginning electric discharge When,Detect and judge the discharge power that the auxiliary battery pack exports after DC/DC converters conversion：When the discharge power of output is more than the required power of the electric automobile, then the DC/DC converters are controlled so that institute The electric discharge of auxiliary battery pack is stated after DC/DC converters conversion, is also charged while electric discharge for the main battery bag；When the discharge power of output is equal to the required power of the electric automobile, then the DC/DC converters are controlled so that institute Auxiliary battery pack is stated only to discharge；When the discharge power is less than the required power of the electric automobile, then control the DC/DC converters will be described auxiliary The rated power that the discharge power of battery pack is converted to the auxiliary battery pack is exported, and controls the main battery bag to put at the same time Electricity is supplemented.
- 2. the electric discharge management method of double source battery pack according to claim 1, it is characterised in that：The control main electricity Pond, which is unwrapped, begins to include the step of electric discharge：Self-test is carried out to the double source battery pack：If self-detection result is abnormal, failure is prompted；If self-detection result is normal, whether the state for detecting the main battery bag and the auxiliary battery pack is normal：If abnormal, Then prompt failure；If normal, the main battery is controlled to unwrap beginning electric discharge.
- 3. the electric discharge management method of double source battery pack according to claim 1, it is characterised in that：The electric discharge management method Further include：When the auxiliary battery pack takes over the main battery and unwraps beginning electric discharge,Detect the relevant parameter of the main battery bag；Judge whether the remaining capacity of the main battery bag is more than default second power threshold：If it is greater, then described in control DC/DC converters are stopped, and the main battery unwraps beginning electric discharge；If less than the second power threshold, then the DC/DC is controlled Converter still works, and the auxiliary battery pack continues to discharge；Wherein, first power threshold is less than second power threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710842505.6A CN107554344B (en) | 2017-09-18 | 2017-09-18 | The method for managing charge/discharge and system of double source battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710842505.6A CN107554344B (en) | 2017-09-18 | 2017-09-18 | The method for managing charge/discharge and system of double source battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107554344A CN107554344A (en) | 2018-01-09 |
| CN107554344B true CN107554344B (en) | 2018-05-08 |
Family
ID=60981185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710842505.6A Active CN107554344B (en) | 2017-09-18 | 2017-09-18 | The method for managing charge/discharge and system of double source battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107554344B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108275026A (en) * | 2018-02-28 | 2018-07-13 | 深圳奥特迅电力设备股份有限公司 | Charging unit and method for vehicle-to-vehicle charging |
| CN109249822B (en) * | 2018-10-08 | 2021-01-15 | 爱驰汽车有限公司 | Battery management device supporting double power sources |
| CN109910678B (en) * | 2019-03-25 | 2021-03-30 | 爱驰汽车有限公司 | Energy charging system, method, device and storage medium for vehicle-mounted dual-source battery pack |
| WO2020192708A1 (en) * | 2019-03-25 | 2020-10-01 | 爱驰汽车有限公司 | Energy management system and method for vehicle-mounted two-source battery pack |
| CN109823231A (en) * | 2019-03-25 | 2019-05-31 | 爱驰汽车有限公司 | Energy management system, method, equipment and the storage medium of vehicle-mounted double source battery pack |
| CN109950650A (en) * | 2019-04-12 | 2019-06-28 | 爱驰汽车有限公司 | Multi-source battery pack charging/discharging thereof, device, electronic equipment, storage medium |
| WO2020207481A1 (en) * | 2019-04-12 | 2020-10-15 | 爱驰汽车有限公司 | Multi-source battery pack charging/discharging method and apparatus |
| CN109941149B (en) * | 2019-04-12 | 2021-08-20 | 爱驰汽车有限公司 | Multi-source battery pack charging and discharging method and device, electronic equipment and storage medium |
| CN109969039A (en) * | 2019-04-16 | 2019-07-05 | 爱驰汽车有限公司 | Energy management system, method, equipment and the storage medium of vehicle-mounted double source battery pack |
| CN110194078A (en) * | 2019-06-20 | 2019-09-03 | 爱驰汽车有限公司 | Electric car, battery pack charge-discharge circuit and charge/discharge control method |
| CN110244229A (en) * | 2019-07-30 | 2019-09-17 | 联想(北京)有限公司 | Battery control method and electronic equipment |
| CN113852164B (en) * | 2021-09-26 | 2024-07-23 | 上汽通用五菱汽车股份有限公司 | Method, device and storage medium for controlling charge and discharge of parallel dual-battery pack |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421630A (en) * | 2009-05-08 | 2012-04-18 | 丰田自动车株式会社 | Power supply system and vehicle equipped with power supply system |
| DE102013221597A1 (en) * | 2013-10-24 | 2015-04-30 | Robert Bosch Gmbh | Peak management system for a battery storage of an electrically operated vehicle |
| CN106956599A (en) * | 2017-05-09 | 2017-07-18 | 武汉微氢新能源有限公司 | The self-loopa charge and discharge device and power assembly system of electric automobile |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011114247A1 (en) * | 2010-03-15 | 2011-09-22 | Brusa Elektronik Ag | Balancing the states of charge of charge accumulators |
| KR101397023B1 (en) * | 2012-03-23 | 2014-05-20 | 삼성에스디아이 주식회사 | Battery pack and method for controlling the same |
-
2017
- 2017-09-18 CN CN201710842505.6A patent/CN107554344B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421630A (en) * | 2009-05-08 | 2012-04-18 | 丰田自动车株式会社 | Power supply system and vehicle equipped with power supply system |
| DE102013221597A1 (en) * | 2013-10-24 | 2015-04-30 | Robert Bosch Gmbh | Peak management system for a battery storage of an electrically operated vehicle |
| CN106956599A (en) * | 2017-05-09 | 2017-07-18 | 武汉微氢新能源有限公司 | The self-loopa charge and discharge device and power assembly system of electric automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107554344A (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107554344B (en) | The method for managing charge/discharge and system of double source battery pack | |
| CN103855748B (en) | The charging system and its charging method of a kind of vehicle | |
| CN106585399B (en) | Mend electric car and its charge-discharge control circuit | |
| CN107599867A (en) | The method for managing charge/discharge and system of double source battery bag | |
| CN107539159A (en) | Double source battery bag, management method and system and electric automobile | |
| CN108808754A (en) | Distributed battery, battery control method and electric vehicle | |
| CN106494254B (en) | Power battery charging protection control system, method and device | |
| CN107554323A (en) | The control system and electric automobile of a kind of power battery pack | |
| CN107554345A (en) | Double source battery bag, management method and system and electric automobile | |
| CN104412444B (en) | The safe design of battery | |
| CN104842814B (en) | Light bus two-way redundant safety high-tension apparatus and its control system and control method | |
| CN204567343U (en) | Light bus two-way redundant safety high-tension apparatus and control system thereof | |
| CN102470811A (en) | On-board electrical system for a vehicle and also control apparatus for an on-board electrical system | |
| CN105811495A (en) | Safety protection apparatus of vehicular lithium battery | |
| CN104600761B (en) | The control method and the automobile with it of inverter electric capacity precharge | |
| CN105914861A (en) | Composite energy storage power supply and method for realizing stabilization of DC bus voltage through composite energy storage power supply | |
| CN107599866A (en) | Double source battery bag and electric automobile | |
| CN110341483A (en) | A kind of detection system and detection method of electric vehicle motor controller | |
| CN207617554U (en) | Lithium ion battery for electric vehicle system | |
| CN102975628B (en) | High-voltage control system of electric automobile | |
| CN112277730A (en) | Charging protection method and device for electric automobile, electric automobile and storage medium | |
| EP3349327B1 (en) | Battery management device | |
| CN108110335A (en) | The control method of the battery system of electric vehicle, electric vehicle and battery system | |
| CN105048571B (en) | A kind of circuit and its method for realizing multiple battery pack complete alternation discharge and recharges | |
| CN110745022A (en) | A multi-functional controller and new energy automobile for new energy automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 334000 Jiangxi city of Shangrao Province Economic and Technological Development Zone West Hing Road Applicant after: AIWAYS AUTOMOBILE Co.,Ltd. Address before: 334000 Jiangxi Province, Shangrao city Shangrao Economic & Technological Development Zone West Park Avenue Applicant before: JIANGXI AICHI YIWEI INDUSTRIAL CO.,LTD. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230131 Granted publication date: 20180508 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240108 Granted publication date: 20180508 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20240227 Granted publication date: 20180508 |
|
| PP01 | Preservation of patent right |