CN207257415U - Double source battery pack and electric automobile - Google Patents
Double source battery pack and electric automobile Download PDFInfo
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- CN207257415U CN207257415U CN201721193388.7U CN201721193388U CN207257415U CN 207257415 U CN207257415 U CN 207257415U CN 201721193388 U CN201721193388 U CN 201721193388U CN 207257415 U CN207257415 U CN 207257415U
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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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- 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
Abstract
The utility model, which provides a kind of double source battery pack and electric automobile, double source battery pack, to be included：Including main battery bag and control unit and the main battery bag storehouse be fixed in electric automobile；With including auxiliary battery pack and be removably mounted on the auxiliary battery pack storehouse in electric automobile；DC/DC converter first end and second ends are connected to total anode of auxiliary battery pack and total negative terminal, and the 3rd end is connected with total anode of main battery bag and total positive output end；4th end is connected with total negative terminal of main battery bag and total negative output terminal, forms the discharge and recharge path of main battery bag and auxiliary battery pack；Control unit is by controlling DC/DC converters to realize the charge and discharge control to auxiliary battery pack；Main battery bag is different with the battery core standard of auxiliary battery pack.The utility model reduces the performance requirement of auxiliary battery pack while the vehicle dynamic property and economy of electric automobile is ensured so that double source battery pack saves 10% 30% cost compared with primary battery group.
Description
Technical field
The power battery field of electric automobile is the utility model is related to, more particularly to a kind of double source for possessing and increasing Cheng Gongneng
Battery pack and electric automobile.
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.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of double source battery pack, pipe
Manage method and system and electric automobile, the battery pack cost for solving the problems, such as electric automobile in the prior art are excessive.
In order to achieve the above objects and other related objects, the utility model provides a kind of double source battery pack, applied to electronic
Automobile, the double source battery pack include：Main battery bag storehouse and auxiliary battery pack storehouse；The electronic vapour is fixed in the main battery bag storehouse
In-car, including main battery bag and control unit；The auxiliary battery pack storehouse is removably mounted on described by mechanical quick change construction
In electric automobile, including auxiliary battery pack；Auxiliary battery pack storehouse is connected described in the main battery Bao Cangyu；The double source battery pack is also
Including DC/DC converters, its first end and second end is connected to total anode of the auxiliary battery pack and total negative terminal, the 3rd end
Be connected respectively 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 master
Total negative terminal of battery pack is connected with total negative output terminal of the double source battery pack；So as to form the main battery bag and the auxiliary electricity
The discharge and recharge path of Chi Bao；And the DC/DC converters are located at the main battery bag storehouse or the auxiliary battery pack storehouse；The control
Unit is connected with the DC/DC converters, the main battery bag and the auxiliary battery pack respectively, and described control unit passes through control
The working status of the DC/DC converters, realizes the charge and discharge control to the auxiliary battery pack；The main battery bag and described auxiliary
The battery core standard of battery pack is different.
In an embodiment of the utility model, the battery core standard includes：Shape form, material, rated voltage, appearance
Amount, production time.
In an embodiment of the utility model, including the auxiliary battery pack storehouse of the auxiliary battery pack is according to actual continuous
Sail mileage requirement and make choice installation.
In an embodiment of the utility model, described control unit is according to the power demand control needed for the electric automobile
The DC/DC converters are made by boosting or being depressured the control realized to the discharge power of the auxiliary battery pack；In the auxiliary electricity
When Chi Bao charges, charging termination condition of the described control unit according to the auxiliary battery pack, controls the DC/DC converters to pass through
Boosting is depressured to realize the charging to the auxiliary battery pack.
In an embodiment of the utility model, when the end of charge voltage of the auxiliary battery pack is less than the main battery bag
Discharge cut-off voltage in the case of：In the auxiliary battery pack electric discharge, described control unit controls the DC/DC converters to lead to
Control of the boosting realization to the discharge power of the auxiliary battery is crossed, to meet the discharge power needed for the electric automobile；Institute
When stating auxiliary battery pack charging, described control unit controls the DC/DC converters to be realized by being depressured to the auxiliary battery pack
Charging.
In an embodiment of the utility model, described control unit be dependent on the main battery bag remaining capacity and
Power demand from the electric automobile controls the working status of the DC/DC converters.
In an embodiment of the utility model, when the remaining capacity of the main battery bag is less than the first power threshold,
Then described control unit controls the DC/DC converters to start to work, and the auxiliary battery pack, which takes over the main battery and unwraps the beginning, puts
Electricity, and charge at the same time for the main battery bag；When the remaining capacity of the main battery bag is more than the second power threshold, then
Described control unit controls the DC/DC converters to be stopped, and the main battery unwraps beginning electric discharge；First power threshold
Less than second power threshold.
In an embodiment of the utility model, discharge condition is in the auxiliary battery pack, and change through the DC/DC
When the discharge power exported after device can not meet the power demand of the electric automobile, then described control unit passes through described in control
DC/DC converters, are discharged with the rated power of the auxiliary battery pack, and are controlled the main battery bag while discharged and mended
Fill.
In an embodiment of the utility model, when the DC/DC converters are located at the main battery bag storehouse；It is described double
Source battery bag further includes the second switch unit in the auxiliary battery pack storehouse；The second switch unit is connected to described auxiliary
Between the first end of total anode of battery pack and the DC/DC converters, for controlling the discharge and recharge of the auxiliary battery pack.
In an embodiment of the utility model, the double source battery pack further includes in the auxiliary battery pack storehouse
Three switch elements；3rd switch element is connected to total negative terminal and the second of the DC/DC converters of the auxiliary battery pack
Between end, for controlling the discharge and recharge of the auxiliary battery pack.
In an embodiment of the utility model, the main battery bag storehouse further includes first switch unit, common switch list
Member and the first storage unit；The auxiliary battery pack storehouse further includes the second storage unit；The discharge and recharge path includes being exclusively used in institute
State the main path of main battery bag discharge and recharge and for the main battery bag and the common path of the common discharge and recharge of auxiliary battery pack；Institute
State first switch unit to be arranged on the main path, for controlling the discharge and recharge of the main battery bag；The common switch list
Member is arranged on the common path, for controlling the discharge and recharge of the main battery bag and the auxiliary battery pack；Described first deposits
Storage unit is connected with the main battery bag and described control unit, for preserving the related data of the main battery bag；Described
Two storage units are connected with the auxiliary battery pack and described control unit, for preserving the related data of the auxiliary battery pack.
The invention also discloses a kind of electric automobile, the electric automobile uses double source battery pack as described above.
The invention also discloses a kind of management method of double source battery pack, the full-vehicle control applied to electric automobile
Device, and the auxiliary battery pack storehouse of the double source battery pack is removably mounted in the electric automobile；The double source battery pack
Management method includes：Step S31, receives the continual mileage demand of driver；Step S32, judges the continual mileage demand：When
When the continual mileage demand is less than default first mileage threshold value, do not prompt that the auxiliary battery pack storehouse is installed, and jump to step
Rapid S34；When the continual mileage demand is more than the first mileage threshold value, then the auxiliary battery pack storehouse is installed in prompting；Step
S33, detects whether the auxiliary battery pack storehouse installs well using the control unit of the double source battery pack：If so, then jump to
Step S34；If it is not, then prompt early warning；Step S34, adjusts the power output of the double source battery pack.
In an embodiment of the utility model, the step S32 is further included：Continue to judge the continual mileage demand be
It is no to be more than default second mileage threshold value, if so, the then auxiliary battery pack storehouse of the prompting installation with high electricity, then jump to institute
State step S33；If it is not, the then auxiliary battery pack storehouse of the prompting installation with low battery, then jump to step S33.
The invention also discloses a kind of management system of double source battery pack, the full-vehicle control applied to electric automobile
Device, and the auxiliary battery pack storehouse of the double source battery pack is removably mounted in the electric automobile；The double source battery is assured
Reason system includes：Receiving module, the continual mileage demand provided for receiving driver；Control module is judged, for foundation
Default first mileage threshold value and the second mileage threshold value are judged and controlled to continual mileage demand；Detection module, for profit
Detect whether the auxiliary battery pack storehouse installs well with the control unit of the double source battery pack；Prompt warning module, for according to
According to the judge control result of the judge control module and/or the testing result of the detection module, prompting is made to driver
Or early warning；Module is adjusted, for adjusting the power output of the double source battery pack；Memory module, for preserving in described first
Journey threshold value and the second mileage threshold value.
As described above, a kind of double source battery pack and electric automobile of the utility model, have following advantageous effects：
1) the utility model uses the battery pack of different battery core standards respectively as main battery bag and auxiliary battery pack, and passes through
DC/DC converters control the discharge and recharge of auxiliary battery pack, ensure that the discharge-rate of auxiliary battery pack remains at certain scope
It is interior, and can constant output；And during if there is discharge power deficiency, then supplemented by main battery bag, this measure effectively compensate for
The defects of high energy is than between battery core multiplying power discharging and service life；
2) the utility model by using different battery core standards power battery (main battery bag and auxiliary battery pack) so that it is double
Source battery bag saves the cost of 10%-30% compared with primary battery group；
3) the utility model can also ensure that the dynamic property of the vehicle of electric automobile, economy drop from the influence of battery
It is low；
4) the utility model enhances the safety redundancy of electric automobile, even if a battery pack breaks down, driver
Car can also be reached to destination or 4S maintenances；On the premise of meeting the needs of driver's trip, mileage anxiety is eliminated, again
The holistic cost of electrokinetic cell system can be reduced, enhances vehicle competitiveness；
5) since auxiliary battery pack storehouse is removably, so the utility model can be according to the continual mileage demand pair of driver
Double source battery pack is managed, and for different continual mileage demands, prompts the auxiliary of auxiliary battery pack of the installation with different electricity
Battery pack storehouse so that the main battery bag storehouse of double source battery pack can carry out flexible combination with different auxiliary battery pack storehouses, to meet
Different continual mileages, adaptively meets the continual mileage demand of driver.
Brief description of the drawings
Fig. 1 is shown as a kind of theory structure schematic diagram of double source battery pack disclosed in the utility model embodiment.
Fig. 2 is shown as the structure diagram of the disclosed double source battery pack using hard switching of the utility model embodiment.
Fig. 3 is shown as a kind of theory structure schematic diagram of double source battery pack disclosed in the utility model second embodiment.
Fig. 4 is shown as a kind of theory structure schematic diagram of double source battery pack disclosed in the utility model 3rd embodiment.
Fig. 5 is shown as the theory structure schematic diagram of another double source battery pack disclosed in the utility model 3rd embodiment.
Fig. 6 is shown as a kind of flow diagram of the management method of double source battery pack disclosed in the utility model embodiment.
Fig. 7 is shown as a kind of theory structure signal of management system of double source battery pack disclosed in the utility model embodiment
Figure.
Component label instructions
110 main battery bags
120 first switch units
130 first detection units
140 main battery bag storehouses
150 first storage units
210 auxiliary battery packs
220 DC/DC converters
230 second detection units
240 auxiliary battery pack storehouses
250 second storage units
260 second switch units
270 the 3rd switch elements
310 common switch units
320 common detection units
400 control units
S31~S34 steps
510 receiving modules
520 judge module
530 detection modules
540 adjustment modules
550 prompting warning modules
560 memory modules
Embodiment
Illustrate the embodiment of the utility model below by way of specific instantiation, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages and effect of the utility model easily.The utility model can also be by addition
Different embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints with answering
With carrying out various modifications or alterations under the spirit without departing from the utility model.It should be noted that in situation about not conflicting
Under, the feature in following embodiments and embodiment can be mutually combined.
Refer to attached drawing.It should be noted that the diagram provided in following embodiments only illustrates this reality in a schematic way
With new basic conception, only the display component related with the utility model rather than group during according to actual implementation in schema then
Number of packages mesh, 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 assembly layout kenel may also be increasingly complex.
The utility model provides a kind of double source battery pack and electric automobile, employs the battery pack of different battery core standards
Respectively as main battery bag and auxiliary battery pack, and by the discharge and recharge of the auxiliary battery pack of DC/DC converters control, it ensure that auxiliary battery
The discharge-rate of bag is remained in certain scope, and can constant output；And if there is discharge power it is insufficient when, then by
Main battery bag is supplemented.Also, main battery bag storehouse and auxiliary battery pack storehouse are carried out separation design by the utility model so that main
Battery pack and auxiliary battery pack can not only use different battery core standards, and auxiliary battery pack storehouse can also be selected as desired
Select, then be removably mounted in electric automobile.In this way, the demand of the different continual mileages of driver is more met,
Avoid crossing for integral battery door bag to design, reduce the cost of vehicle.Also, the detachable auxiliary battery pack storehouse is directed to, it is public
A set of method and system being managed using entire car controller to double source battery pack is opened
Embodiment 1
Present embodiment discloses a kind of double source battery pack applied to electric automobile, as shown in Figure 1, including：Main battery bag
Storehouse 140 and auxiliary battery pack storehouse 240.Wherein, main battery bag storehouse 140 includes：It is main battery bag 110, first switch unit 120, public
Switch element 310 and control unit 400.Auxiliary battery pack storehouse 240 includes：Auxiliary battery pack 210, DC/DC converters 220.Wherein,
Main battery bag storehouse 140 is the main source of electric car electric energy, it is fixedly mounted on electric automobile, is to change
Become and replace；Auxiliary battery pack storehouse 240 is the aiding sources of electric car electric energy, it is detachably accepted to electric automobile
On, and be connected with main battery bag storehouse 140.Preferably, auxiliary battery pack storehouse 240 and electric automobile are carried out by mechanical quick change construction
Between replacement.That is, auxiliary battery pack storehouse 240 is can be according to the battery health and/or vehicle of auxiliary battery pack 210
Continual mileage demand is replaced, and so can more efficiently aid in main battery bag 110, to meet the different need of driver
Ask.
The first end and second end of DC/DC converters 220 is connected with total anode of auxiliary battery pack 210 and total negative terminal respectively,
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, has been thusly-formed main battery bag 110 and auxiliary
The discharge and recharge path of battery pack 210, such as 1 chain lines of attached drawing and shown in solid.Wherein, discharge and recharge path includes main path, auxiliary
Path and common path.Main path (solid line where main battery bag 110 in Fig. 1) is to refer to main battery in discharge and recharge path
Branching path where bag 110, which is that main battery bag 110 is dedicated；Bypass footpath (the institute of auxiliary battery pack 210 in Fig. 1
Solid line) be branching path in discharge and recharge path where auxiliary battery pack 210, which is that auxiliary battery pack 210 is special
's；Common path (chain-dotted line in Fig. 1) be in discharge and recharge path main battery bag 110 and auxiliary battery pack 210 in charge and discharge process
Middle be used in conjunction with path.
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.The battery core standard for the battery pack being previously mentioned in the present embodiment includes but not limited to：Shape form, material
Material, rated voltage, capacity, production time etc..
Preferably, the highest end of charge voltage of the auxiliary battery pack 210 of the present embodiment is less than the electric discharge of main battery bag 110
Blanking voltage.
The main battery bag 110 of the present embodiment uses the battery pack of better performances, preferably power energy mixed type battery core, can
Daily continual mileage after enough meeting battery pack in groups, and can meet the instantaneous power of crest discharge.Under normal conditions, main electricity
Battery core selected by pond bag 110 at least meets the requirement of the cycle life (80%) of 2500 1C charge and discharge.Auxiliary battery pack 210 is adopted
Compare battery core with the less high energy of cycle life.As it was previously stated, auxiliary battery pack 210 is primarily to meet farther continual mileage
Demand and set, the ratio that this part continual mileage accounts in the Life cycle of vehicle is no more than 10%, therefore auxiliary battery
Bag 210 selection high energy than battery core so that battery pack in groups after continual mileage can freely arrange in pairs or groups according to vehicle demand.It is preferred that
Ground, the cycle life of auxiliary battery pack 210 meet the requirement of the circulation (80%) of the 1C charge and discharge of more than 800 times.In this way, main electricity
Pond bag 110 and auxiliary battery pack 210 can both meet the needs of driver is for trip, eliminate mileage anxiety, and can reduce dynamic
The holistic cost of power battery pack, enhances vehicle competitiveness.
First switch unit 120 is arranged on main path, for controlling the discharge and recharge of main battery bag 110.Common switch list
Member 310 is arranged on common path, for controlling the operating mode of whole double source battery pack.First switch unit 120 closes, and public
In the case that switch element 310 closes, main battery bag 110 carries out charge and discharge；It is in running order in DC/DC converters 220,
And the 3rd switch element 310 close in the case of auxiliary battery pack 210 carry out charge and discharge.
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 to externally discharging.It also can be by the input electricity of double source battery pack at the same time
Pressure is by boosting or is depressured in the operating voltage range of auxiliary battery pack 210, and charges to auxiliary battery pack 210.This implementation
Example has broken traditional auxiliary battery pack 210 and has had to be maintained at identical or phase with main battery bag 110 by DC/DC converters 220
Near voltage platform, overcomes influence of the main battery bag 110 to auxiliary battery pack 210, reduces each side of auxiliary battery pack 210
(performance, voltage) requirement so that different 210 schemes of auxiliary battery pack can be applied to the double source battery pack of the utility model；And
And it can also freely arrange according to the vehicle space unrestricted choice of electric automobile, space availability ratio is maximized.
Preferably, the end of charge voltage of auxiliary battery pack 210 is less than the discharge cut-off voltage of main battery bag 110, in this way,
As long as DC/DC converters 220 are just in following pattern：When auxiliary battery pack 210 is discharged, DC/DC converters 220 pass through
Boost mode, to control the discharge power of auxiliary battery pack 210, so as to meet the discharge power needed for electric automobile；In auxiliary battery
When bag 210 is charged, DC/DC converters 220 reduce the charging voltage of external input, reach and auxiliary battery pack 210 is filled
The purpose of electricity.In such cases, the structural topology of DC/DC converters 220 is relatively easy.
In the present embodiment, first switch unit 120 and common switch unit 310 can both use hard switching, can also adopt
With Sofe Switch, and controlled by control unit 400.
Preferably, the hard switching of the present embodiment uses contactor, and (attached drawing only identifies control unit as shown in Figure 2
400th, first switch unit 120, common switch unit 310, main battery bag 110, auxiliary battery pack 210 and DC/DC converters 220),
First switch unit 120 and common switch unit 310 are realized using contactor：First switch unit 120 is included by contacting
The switch K11 and K12 of device composition；And common switch unit 310 includes the switch K31 that is made of contactor.Wherein, switch
The disconnection of the charging and discharging circuit of K11 control main batterys bag 110 and closure；The disconnection in the preliminary filling circuit of K12 control main batterys bag 110
And closure.The switch that K31 is common path is switched, controls the discharge and recharge of main battery bag or auxiliary battery pack, and ensure main battery bag
110th, the high-voltage safety of auxiliary battery pack 210 in abnormal cases.
Preferably, the Sofe Switch of the present embodiment is using IGBT or carborundum etc..
Control unit 400 is connected with first switch unit 120, DC/DC converters 220, common switch unit 310, uses
It is opened or closed in control first switch unit 120 and common switch unit 310, and the work shapes of DC/DC converters 220
State.Also, the transmission line of the control signal of the present embodiment is as shown in phantom in fig. 1.In order to realize control unit 400 to
The accurate control of one switch element 120, DC/DC converters 220 and common switch unit 310, it needs to be dependent on main battery bag
110th, the parameter of auxiliary battery pack 210.Therefore, in the present embodiment, main battery bag storehouse 140 further includes first detection unit 130 and public affairs
Detection unit 320 altogether, auxiliary battery pack storehouse 240 further includes second detection unit 230.Wherein,
First detection unit 130 is the relevant information for detecting main battery bag 110 and/or first switch unit 120, bag
Include but be not limited to：Voltage, electric current and the temperature of main battery bag 110, working status of first switch unit 120 etc..
Second detection unit 230 is the relevant information for detecting auxiliary battery pack 210 and/or DC/DC converters 220, bag
Include but be not limited to：Voltage, the electric current of auxiliary battery pack 210, working status of DC/DC converters 220 etc..
Common detection unit 320 is the relevant information for detecting common path, is included but not limited to：The electricity of common path
Pressure, electric current, the working status of the 3rd switch element 310.
It should be noted that first detection unit 130, second detection unit 230 and public inspection that the present embodiment is proposed
Survey unit 320 and be not only a device or chip or realized by multiple chip portfolio uses, also, it is right
Detection in voltage, electric current and temperature and the detection of the working status for switch element are all those skilled in the art institutes
It is well known, just repeat no more herein.In addition, for main battery bag 110 and auxiliary battery pack 210, according to first detection unit 130
The temperature conditions detected with second detection unit 230, can be to main battery bag 110, DC/DC converters 220 when temperature is excessive
And/or auxiliary battery pack 210 imposes corresponding cooling treatment, to ensure main battery bag 110, DC/DC converters 220 and/or auxiliary electricity
The normal work of pond bag 210.
Also, in the double source battery pack of the present embodiment, due to auxiliary battery pack storehouse 240 be it is replaceable, starting
Auxiliary battery pack storehouse 240 is detected during work, to ensure whether auxiliary battery pack storehouse 240 installs well.Also, in order to detect
Accuracy, be also specially equipped with second storage unit 250 in each auxiliary battery pack storehouse 240, it is corresponding for preserving
The related data of auxiliary battery pack 210, so that control unit 400 refers to.The related data is divided into permanent data and real time data；Institute
Meaning permanent data refers to the intrinsic supplemental characteristic of battery pack, includes but not limited to：The production time of battery pack, battery pack are compiled
Number, battery types, maximum allowable charging voltage, minimum allowable discharge voltage, maximum allowable charging current, maximum allowable electric discharge work(
Rate etc.；So-called real time data refers to data of the battery pack before last time power-off, includes but not limited to：Power-off time, failure letter
Breath, remaining capacity, cell health state, total voltage, single battery core voltage etc..
Detection of the control unit 400 to auxiliary battery pack storehouse 240 is except the related data preserved in the second storage unit 250
Outside, the testing result and common detection unit 320 for being also dependent on second detection unit 230 for the voltage of auxiliary battery pack 210 are right
The voltage detecting result of common path.Only in the voltage and common path of the auxiliary battery pack 210 for detecting auxiliary battery pack storehouse 240
Voltage it is identical in the case of, can just judge that auxiliary battery pack storehouse 240 is installed well, otherwise, control unit 400 can prompt early warning.
In addition, the detection data that control unit 400 is provided by first detection unit 130 and second detection unit 230,
The electricity of main battery bag 110 and/or auxiliary battery pack 210, remaining capacity, health status, dump energy etc. can be calculated.With
This is foundation, and first switch unit 120 and DC/DC converters 220 are accurately controlled, and is realized to main battery bag 110 or auxiliary
The accurate management of the charge and discharge of battery pack 210.
In the present embodiment, control unit 400 is realized to first switch unit 120, DC/DC converters by two ways
220 and the control of common switch unit 310：
First, control unit 400 further includes communication subelement (drawing not in the drawings), using communicating, subelement receives
The control instruction that CAN (Controller Area Network, controller local area network) network passes over, refers to according to control
Order is controlled first switch unit 120,220 and the 3rd switch element 310 of DC/DC converters；
Second, control unit 400 is to be dependent on first detection unit 130, second detection unit 230 and common detection unit
320 testing result, is judged, with to first switch unit 120,220 and the 3rd switch element 310 of DC/DC converters into
Row control.Under such a mode, in order to coordinate control unit 400, one and control unit are provided with main battery storehouse 140
400 the first storage units 150 being connected with main battery bag 110, for preserving the correlation of parameter preset and main battery bag 110
Data.Wherein, the related data of main battery bag 110 is that the related data of auxiliary battery pack 210 is identical.Control unit 400 is one
Possesses the chip of data processing function, it is to first detection unit 130, second detection unit 230 and common detection unit 320
Testing result is handled and judged, is further realized and is switched list to first switch unit 120, DC/DC converters 220 and the 3rd
The control of member 310.
Preferably, control unit 400 is to be needed by the remaining capacity of main battery bag 110 with the power for coming from electric automobile
Ask to control the working status of DC/DC converters 220：
When the remaining capacity of main battery bag 110 is more than the first power threshold, control unit 400 controls DC/DC converters
220 do not work, i.e., auxiliary battery pack 210 is discharged without electric discharge by main battery bag 110；
When 110 remaining capacity of main battery bag is less than the first power threshold, control unit 400 controls DC/DC conversions
Device 220 is started to work so that auxiliary battery pack 210 takes over main battery bag 110 and starts to discharge.Also, in the electric discharge of auxiliary battery pack 210
When power is more than the power demand of electric automobile, auxiliary battery pack 210 also charges main battery bag 110 while electric discharge；
It can not meet that the power demand of electric automobile is in the discharge power of auxiliary battery pack 210, then control unit 400 controls DC/DC to turn
Parallel operation 220 exports rated power, and controls main battery bag 110 while discharge and supplemented.
Further, in the case where auxiliary battery pack 210 is discharged, when the remaining capacity of main battery bag 110 is more than the second electricity
When measuring threshold value, control unit 400 then controls DC/DC converters to be stopped, and main battery bag 110 continues to discharge.
In addition, when auxiliary battery pack 210 is discharged, if electric automobile whole suddenly slows down, when producing feedback current, DC/
DC converters 220 can stop exporting, and the energy after feedback is received completely by main battery bag.
Wherein, the first power threshold and the second power threshold are pre-set.Preferably, the first power threshold is
10%；Second power threshold is 40%.
In addition, in order to protrude the innovative part of the utility model, will not be with solving the utility model in the present embodiment
The less close unit of the technical problem relation that is proposed introduces, but this is not intended that in the present embodiment that there is no other single
Member.
It should be noted that the diagram provided in the present embodiment only illustrates the basic structure of the utility model in a schematic way
Think, then in schema only the display component related with the utility model rather than component count during according to actual implementation, shape and
Size is drawn, and kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its assembly layout type
State may also be increasingly complex.
Embodiment 2
Present embodiment discloses a kind of double source battery pack applied to electric automobile, as shown in figure 3, including：Main battery bag
Storehouse 140 and auxiliary battery pack storehouse 240.Wherein, main battery bag storehouse 140 includes：It is main battery bag 110, first switch unit 120, public
Switch element 310, control unit 400 and DC/DC converters 220.Auxiliary battery pack storehouse 240 only includes auxiliary battery pack 210.
Double source battery pack disclosed in the present embodiment is only DC/DC converters 220 with double source battery pack disclosed in embodiment 1
Installation site it is different, it is installed in main battery bag storehouse 140.Correspond, second detection unit 230 is only used for realization pair
The detection of the voltage of auxiliary battery pack 210, electric current, temperature and insulation resistance, and first detection unit 210 is except for detecting main electricity
Outside voltage, electric current, temperature and the insulation resistance of pond bag 110 and the working status of first switch unit 120, it is additionally operable to detect
The working status of DC/DC converters 220 in main battery bag 140.
The operation principle and connection relation of whole double source battery pack, identical with embodiment 1, details are not described herein.
Embodiment 3
Present embodiment discloses a kind of double source battery pack applied to electric automobile, as shown in figure 4, including：Main battery bag
Storehouse 140 and auxiliary battery pack storehouse 240.Wherein, main battery bag storehouse 140 includes：It is main battery bag 110, first switch unit 120, public
Switch element 310, control unit 400 and DC/DC converters 220.Opened including auxiliary battery pack 210 and second in auxiliary battery pack storehouse 240
Close unit 260.Wherein, second switch unit 260 is be connected to total anode of auxiliary battery pack 210 and DC/DC converters 220 the
Between one end.DC/DC converters 220 due to controlling auxiliary battery pack 210 are not installed on auxiliary electricity at the same time with auxiliary battery pack 210
In Chi Bao storehouses 240, therefore, considering based on security, second switch unit 260 is additionally arranged in total anode of auxiliary battery pack 210,
So that auxiliary battery pack storehouse 240 is safer during dismounting.
Also, in double source battery pack shown in Fig. 4, second detection unit 230 except the voltage to auxiliary battery pack 210,
Electric current, temperature and insulation resistance will also be detected the working status of second switch unit 260 outside being detected.For DC/
The detection of the working status of DC converters 220 equally changes by first detection unit 130 to realize.
Further, as shown in figure 5, can also be in auxiliary battery pack storehouse 240, the total negative terminal and DC/DC of auxiliary battery pack 210
3rd switch element 270 is set between the second end of converter 220, to reach to the dual of the security in auxiliary battery pack storehouse 240
Protection.Also, in the double source battery pack shown in Fig. 5, second detection unit 230 except to the voltage of auxiliary battery pack 210, electric current,
, will also be to the working status of 260 and/or the 3rd switch element 270 of second switch unit outside temperature and insulation resistance are detected
It is detected.Detection for the working status of DC/DC converters 220 equally changes by first detection unit 130 to realize.
In addition, second switch unit 260 and/or the 3rd switch element 270 such as the first switch unit 120 in embodiment 1
Equally, hard switching can be both used, Sofe Switch can also be used, just repeated no more herein.
The operation principle of the DC/DC converters 220 of the double source battery pack of the present embodiment is similarly same as Example 1,
This is just repeated no more.Simply, when being controlled to auxiliary battery pack 210, only in second switch unit 260 or second switch
, just can be by controlling the working statuses of DC/DC converters 220 when 260 and the 3rd switch element 270 of unit is closed at, control
Make the discharge and recharge of auxiliary battery pack 210；Otherwise, as long as 260 or the 3rd switch element 270 of second switch unit disconnects, auxiliary battery
Bag 210 can not carry out discharge and recharge.
Embodiment 4
Present embodiment discloses a kind of management method of double source battery pack, applied to having used such as embodiment 1,2 or 3 disclosures
Double source battery pack electric automobile entire car controller (Vehicle Control Unit), with realize to double source battery pack
Main battery bag storehouse and the management in auxiliary battery pack storehouse.
As shown in fig. 6, the management method of the double source battery pack of the present embodiment includes：
Step S31, receives the continual mileage demand of driver：
Driver inputs its estimated continual mileage demand by the panel of entire car controller.For example, driver beats today
Calculate from the round-trip Suzhou of Shanghai self-driving, that is to say, that continual mileage demand is at 220 kilometers or so.It should be noted that the present embodiment
The continual mileage demand of disclosed reception driver, is not limited in driver and directly inputs a kind of continual mileage demand this feelings
Condition, it can also input corresponding destination-address, by the continual mileage demand needed for navigation equipment statistics and be supplied to vehicle
Controller.Therefore, as long as the mode of corresponding continual mileage demand can be provided for entire car controller in the utility model
Protection domain in.
Step S32, judges the continual mileage demand of driver：
When continual mileage demand is less than the first mileage threshold value, then prompt that auxiliary battery pack is not installed, and jump to step
S34；
When continual mileage demand is more than the first mileage threshold value, then auxiliary battery pack is installed in prompting, and jumps to step S33；
Preferably, in order to realize the more accurate management to double source battery pack, therefore, to continual mileage demand and the
After one mileage threshold value is judged, continual mileage demand and the second mileage threshold value can also be judged again, i.e.,：
When continual mileage demand is less than the second mileage threshold value, then prompting installation has the auxiliary battery pack storehouse of low battery；And
Jump to step S32；
When continual mileage demand is more than the second mileage threshold value, then prompting installation has the auxiliary battery pack storehouse of high electricity；And
Jump to step S32.
In the present embodiment, the first mileage threshold value and the second mileage threshold value are all based on the daily average traveling of electric automobile
Mileage statistical value and it is default.Preferably, the first mileage threshold value is 150 kilometers, and the second mileage threshold value is 250 kilometers.
Since the auxiliary battery pack storehouse of the separate type double source battery pack of embodiment 1,2 or 3 is removably and main battery bag one
As disclosure satisfy that 150 kilometers of continual mileage demand, therefore, when less than the first mileage threshold value, then need not additionally install auxiliary
Battery pack storehouse.Also, according to different continual mileage demands, the battery pack storehouse that installation possesses different electricity can be prompted as auxiliary
Battery pack storehouse.For example, the round-trip Suzhou of Shanghai self-driving, continual mileage demand is at 220 kilometers, as long as therefore according to low battery
Auxiliary battery pack storehouse can meet demand.
Step S33, detects whether auxiliary battery pack storehouse installs well using the control unit of double source battery pack：
If installation is good, step S34 is jumped to；
If do not installed, early warning is prompted.
Detection of the control unit of double source battery pack to auxiliary battery pack storehouse has had been described in detail in embodiment 1,
No longer write herein.
Step S34, adjusts the power output of double source battery pack, and different auxiliary battery pack storehouses varies in weight, uneasy in selection
When filling the auxiliary battery pack storehouse of auxiliary battery pack storehouse or installation with low battery, system can adaptively reduce output power, in not shadow
Energy loss is reduced in the case of ringing dynamic property, increases continual mileage.
Wherein, adjusting the power output of double source battery pack had both included the power output of adjustment main battery bag, also included adjustment
The power output of main battery bag and auxiliary battery pack.
The step of above method, divides, and is intended merely to describe clear, a step is can be merged into when realizing or to certain
A little steps are split, and are decomposed into multiple steps, as long as comprising identical logical relation, within the protection scope of the present patent；
To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm and stream are not changed
The core design of journey is all in the protection domain of the patent.
Embodiment 5
Present embodiment discloses a kind of management system of double source battery pack, applied to the double source electricity used such as embodiment 1
The entire car controller of the electric automobile of Chi Bao.And the management system of the double source battery pack is connected with double source battery pack.
As shown in fig. 7, the management system of the battery pack of the present embodiment includes：Receiving module 510, judges control module 520,
Detection module 530, adjustment module 540, prompting warning module 550, memory module 560 are installed.
Wherein, receiving module 510 is used to receive the continual mileage demand that driver is provided；
Control module 520 is judged to be used to judge continual mileage demand：
When continual mileage demand is less than the first mileage threshold value, then auxiliary battery pack storehouse is not installed；
When continual mileage demand is between the first mileage threshold value and the second mileage threshold value, then by prompting warning module
550 auxiliary battery pack storehouses of the prompting installation with low battery；
When continual mileage demand is more than the second mileage threshold value, then by prompting the prompting installation of warning module 550 that there is height
The auxiliary battery pack storehouse of electricity.
Detection module 530 is used to detect whether auxiliary battery pack storehouse installs well using the control unit of double source battery pack, and
In the case where detecting that auxiliary battery pack storehouse is not installed well, by prompting warning module 550 to carry out early warning.
Adjustment module 540 is used for the power output for adjusting double source battery pack.
Warning module 550 is prompted to be used to provide corresponding prompting and early warning to driver.Such as；Prompting installation low battery
Auxiliary battery pack, auxiliary battery pack are not installed good etc..
Memory module 560 is used to preserve default first mileage threshold value and the second mileage threshold value.
In addition, in order to protrude the innovative part of the utility model, will not be with solving the utility model in the present embodiment
The less close unit of the technical problem relation that is proposed introduces, but this is not intended that in the present embodiment that there is no other single
Member.
And it is not difficult to find that the present embodiment is can be with the corresponding system embodiment of second embodiment, the present embodiment
Four embodiments are worked in coordination implementation.The relevant technical details mentioned in fourth embodiment are still effective in the present embodiment, in order to
Reduce and repeat, which is not described herein again.Correspondingly, the relevant technical details mentioned in the present embodiment are also applicable in fourth embodiment
In.
In conclusion a kind of double source battery pack and electric automobile of the utility model, using the electricity of different battery core standards
Chi Bao ensure that auxiliary respectively as main battery bag and auxiliary battery pack, and by the discharge and recharge of the auxiliary battery pack of DC/DC converters control
The discharge-rate of battery pack is remained in certain scope, and can constant output；And during if there is discharge power deficiency,
Then supplemented by main battery bag, this measure effectively compensate for the defects of high energy is than between battery core multiplying power discharging and service life；This practicality
The new power battery (main battery bag and auxiliary battery pack) by using different battery core standards so that double source battery pack and primary battery
Group is compared to the cost for saving 10%-30%；The utility model can also ensure the dynamic property of the vehicle of electric automobile, economy not
Influenced and reduced by battery；The utility model enhances the safety redundancy of electric automobile, even if event occurs in a battery pack
Car can also be reached destination or 4S maintenances by barrier, driver；On the premise of meeting the needs of driver's trip, in eliminating
Journey anxiety, and the holistic cost of electrokinetic cell system can be reduced, enhance vehicle competitiveness；Since auxiliary battery pack storehouse is removable
Ground is unloaded, so the utility model can be managed double source battery pack according to the continual mileage demand of driver, for different
Continual mileage demand, prompts the auxiliary battery pack storehouse of auxiliary battery pack of the installation with different electricity so that the main electricity of double source battery pack
Chi Bao storehouses can carry out flexible combination with different auxiliary battery pack storehouses, to meet different continual mileages, adaptively meet to drive
The continual mileage demand for the person of sailing.So the utility model effectively overcomes various shortcoming of the prior art and has high industrial
Utility value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by the claim of the utility model.
Claims (12)
1. a kind of double source battery pack, it is characterised in that applied to electric automobile, the double source battery pack includes：Main battery bag storehouse
With auxiliary battery pack storehouse；
The main battery bag storehouse is fixed in the electric automobile, including main battery bag and control unit；The auxiliary battery pack storehouse
It is removably mounted on by mechanical quick change construction in the electric automobile, including auxiliary battery pack；The main battery Bao Cangyu institutes
Auxiliary battery pack storehouse is stated to be connected；
The double source battery pack further includes DC/DC converters, its first end and second end is connected to the auxiliary battery pack
Total anode and total negative terminal, the 3rd end respectively with total anode of the main battery bag and total positive output end phase of the double source battery pack
Even, the 4th end is connected with total negative terminal of the main battery bag and total negative output terminal of the double source battery pack respectively；So as to be formed
The discharge and recharge path of the main battery bag and the auxiliary battery pack；And the DC/DC converters be located at the main battery bag storehouse or
The auxiliary battery pack storehouse；
Described control unit is connected with the DC/DC converters, the main battery bag and the auxiliary battery pack respectively, the control
Unit realizes the charge and discharge control to the auxiliary battery pack by controlling the working statuses of the DC/DC converters；
The main battery bag is different with the battery core standard of the auxiliary battery pack.
2. double source battery pack according to claim 1, it is characterised in that：The battery core standard includes：Shape form, material
Material, rated voltage, capacity, production time.
3. double source battery pack according to claim 1, it is characterised in that：The auxiliary battery pack including the auxiliary battery pack
Storehouse makes choice installation according to actual continual mileage demand.
4. double source battery pack according to claim 1, it is characterised in that：Described control unit is according to the electric automobile institute
The power demand needed controls the DC/DC converters by boosting or being depressured the control realized to the discharge power of the auxiliary battery pack
System；In the auxiliary battery pack charging, charging termination condition of the described control unit according to the auxiliary battery pack, described in control
DC/DC converters are by boosting or being depressured the charging process to realize to the auxiliary battery pack.
5. double source battery pack according to claim 4, it is characterised in that：When the end of charge voltage of the auxiliary battery pack is small
In the case of the discharge cut-off voltage of the main battery bag：In the auxiliary battery pack electric discharge, described control unit control institute
The control that DC/DC converters are realized to the discharge power of the auxiliary battery by boosting is stated, to meet needed for the electric automobile
Discharge power；In the auxiliary battery pack charging, described control unit controls the DC/DC converters to be realized by being depressured
To the charging process of the auxiliary battery pack.
6. double source battery pack according to claim 1, it is characterised in that：Described control unit is to be dependent on the main battery
The remaining capacity of bag and power demand from the electric automobile control the working status of the DC/DC converters.
7. double source battery pack according to claim 6, it is characterised in that：
When the remaining capacity of the main battery bag is less than the first power threshold, then described control unit controls 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, and is filled at the same time for the main battery bag
Electricity；
When the remaining capacity of the main battery bag is more than the second power threshold, then described control unit controls the DC/DC to turn
Parallel operation is stopped, and the main battery unwraps beginning electric discharge；
First power threshold is less than second power threshold.
8. double source battery pack according to claim 6, it is characterised in that：Discharge condition is in the auxiliary battery pack, and
When the discharge power exported after the DC/DC converters can not meet the power demand of the electric automobile, then the control
Unit is discharged, and control the main battery by controlling the DC/DC converters with the rated power of the auxiliary battery pack
Electric discharge is supplemented bag at the same time.
9. double source battery pack according to claim 1, it is characterised in that：When the DC/DC converters are located at the main electricity
During Chi Bao storehouses；The double source battery pack further includes the second switch unit in the auxiliary battery pack storehouse；
The second switch unit is connected between total anode of the auxiliary battery pack and the first end of the DC/DC converters,
For controlling the discharge and recharge of the auxiliary battery pack.
10. double source battery pack according to claim 9, it is characterised in that：The double source battery pack is further included positioned at described
The 3rd switch element in auxiliary battery pack storehouse；3rd switch element be connected to total negative terminal of the auxiliary battery pack with it is described
Between the second end of DC/DC converters, for controlling the discharge and recharge of the auxiliary battery pack.
11. double source battery pack according to claim 1, it is characterised in that：The main battery bag storehouse further includes first switch
Unit, common switch unit and the first storage unit；The auxiliary battery pack storehouse further includes the second storage unit；
The discharge and recharge path includes being exclusively used in the main path of the main battery bag discharge and recharge and for the main battery bag and described
The common path of the auxiliary common discharge and recharge of battery pack；
The first switch unit is arranged on the main path, for controlling the discharge and recharge of the main battery bag；
The common switch unit is arranged on the common path, for controlling the main battery bag and the auxiliary battery pack
Charge and discharge；
First storage unit is connected with the main battery bag and described control unit, for preserving the phase of the main battery bag
Close data；
Second storage unit is connected with the auxiliary battery pack and described control unit, for preserving the phase of the auxiliary battery pack
Close data.
A kind of 12. electric automobile, it is characterised in that：The electric automobile is used as described in any one in claim 1-11
Double source battery pack.
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|---|---|---|---|
| CN201721193388.7U CN207257415U (en) | 2017-09-18 | 2017-09-18 | Double source battery pack and electric automobile |
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| CN201721193388.7U CN207257415U (en) | 2017-09-18 | 2017-09-18 | Double source battery pack and electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749617A (en) * | 2018-06-11 | 2018-11-06 | 浙江衡远新能源科技有限公司 | A kind of interchangeable electric battery control system of electric vehicle |
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2017
- 2017-09-18 CN CN201721193388.7U patent/CN207257415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749617A (en) * | 2018-06-11 | 2018-11-06 | 浙江衡远新能源科技有限公司 | A kind of interchangeable electric battery control system of electric vehicle |
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