CN107539159A - Double source battery bag, management method and system and electric automobile - Google Patents
Double source battery bag, management method and system and electric automobile Download PDFInfo
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- CN107539159A CN107539159A CN201710841992.4A CN201710841992A CN107539159A CN 107539159 A CN107539159 A CN 107539159A CN 201710841992 A CN201710841992 A CN 201710841992A CN 107539159 A CN107539159 A CN 107539159A
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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 present invention, which provides a kind of double source battery bag, management method and system and electric automobile, double source battery bag, 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 bag and be removably mounted on the auxiliary battery bag storehouse in electric automobile；DC/DC converters first end and the second end are connected to total anode of auxiliary battery bag 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 bag；Control unit is by controlling DC/DC converters to realize the charge and discharge control to auxiliary battery bag；Main battery bag is different with the battery core standard of auxiliary battery bag.The present invention reduces the performance requirement of auxiliary battery bag while the vehicle dynamic property and economy of electric automobile is ensured so that double source battery bag saves 10% 30% cost compared with galvanic cell group.
Description
Technical field
The present invention relates to the electrokinetic cell field of electric automobile, more particularly to a kind of double source battery for possessing and increasing Cheng Gongneng
Bag, management method and system 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 electric automobile EV long continual mileage is increasingly becoming main trend, such as the long continual mileage versions of tesla Model-S
Most high-purity nearly 500 kilometers of electric 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 Copacity, generally more than 50kWh.Battery system cost, battery bag take up space all to the system of electric automobile in vehicle installation
Make and propose sizable challenge.
At present, electric automobile typically 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 bag, the single battery core of Large Copacity is not easy to be optionally combined, and this causes battery bag
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 bag scheme of tesla, it is based on low capacity electricity
Core 18650, using up to ten thousand, the low capacity battery core is combined, the requirement for solving big Electronic power batteries bag 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 Copacity and being easy to combination
Cause the reduction of the overall security and reliability of battery bag.
Also, whether using any of both the above scheme, in order to ensure the life-span 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 electric automobile EV integral vehicle cost, the cost of electrokinetic cell packet system accounts for 40-70%.By current battery
Battery core calculation of price, electrokinetic cell are bundled into the 50% of this integral vehicle cost that can exceed electric automobile EV mostly.With based on fuel oil
Orthodox car is compared, and electric automobile EV has no cost advantage, so as to constrain electric automobile EV market acceptance significantly.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of double source battery bag, manager
Method and system and electric automobile, for solving the problems, such as that the battery bag cost of electric automobile in the prior art is too high.
In order to achieve the above objects and other related objects, the present invention provides a kind of double source battery bag, applied to electric automobile,
The double source battery bag includes：Main battery bag storehouse and auxiliary battery bag storehouse；The main battery bag storehouse is fixed in the electric automobile,
Including main battery bag and control unit；The auxiliary battery bag storehouse is removably mounted on the electronic vapour by mechanical quick change construction
In-car, including auxiliary battery bag；Auxiliary battery bag storehouse is connected described in the main battery Bao Cangyu；The double source battery bag also includes
DC/DC converters, its first end and the second end are connected to total anode of the auxiliary battery bag 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 bag, 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 bag；So as to form the main battery bag and the auxiliary battery bag
Discharge and recharge path；And the DC/DC converters are located at the main battery bag storehouse or the auxiliary battery bag storehouse；Described control unit
It is connected respectively with the DC/DC converters, the main battery bag and the auxiliary battery bag, described control unit passes through described in control
The working condition of DC/DC converters, realize the charge and discharge control to the auxiliary battery bag；The main battery bag and the auxiliary battery
The battery core standard of bag is different.
In one embodiment of the invention, the battery core standard includes：Profile form, material, rated voltage, capacity, life
Produce the time.
In one embodiment of the invention, including the auxiliary battery bag storehouse of the auxiliary battery bag is according in actual driving
Journey demand carries out selecting installation.
In one embodiment of the invention, described control unit controls institute according to the power demand needed for the electric automobile
DC/DC converters are stated by boosting or being depressured the control realized to the discharge power of the auxiliary battery bag；In the auxiliary battery bag
During charging, charging termination condition of the described control unit according to the auxiliary battery bag, the DC/DC converters are controlled to pass through boosting
Or it is depressured to realize the charging to the auxiliary battery bag.
In one embodiment of the invention, when the end of charge voltage of the auxiliary battery bag is less than putting for the main battery bag
In the case of electric blanking voltage：In the auxiliary battery bag electric discharge, described control unit controls the DC/DC converters to pass through liter
Pressure realizes the control to the discharge power of the auxiliary battery, to meet the discharge power needed for the electric automobile；Described auxiliary
When battery bag charges, described control unit controls the DC/DC converters to be filled by being depressured to realize to the auxiliary battery bag
Electricity.
In one embodiment of the invention, described control unit is to be dependent on dump energy and the source of the main battery bag
The working condition of the DC/DC converters is controlled in the power demand of the electric automobile.
In one embodiment of the invention, when the dump energy of the main battery bag is less than the first power threshold, then institute
Stating control unit controls the DC/DC converters to start working, and the auxiliary battery bag takes over the main battery and unwraps beginning electric discharge, and
Charged simultaneously for the main battery bag；It is when the dump energy 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 is less than
Second power threshold.
In one embodiment of the invention, discharge condition is in the auxiliary battery bag, and after the DC/DC converters
When the discharge power of output can not meet the power demand of the electric automobile, then described control unit is by controlling the DC/
DC converters, discharged with the rated power of the auxiliary battery bag, and control the main battery bag while discharge and supplemented.
In one embodiment of the invention, when the DC/DC converters are located at the main battery bag storehouse；The double source electricity
Chi Bao also includes the second switch unit in the auxiliary battery bag storehouse；The second switch unit is connected to the auxiliary battery
Between total anode of bag and the first end of the DC/DC converters, for controlling the discharge and recharge of the auxiliary battery bag.
In one embodiment of the invention, the double source battery bag is also opened including the 3rd in the auxiliary battery bag storehouse
Close unit；3rd switch element be connected to total negative terminal of the auxiliary battery bag and the DC/DC converters the second end it
Between, for controlling the discharge and recharge of the auxiliary battery bag.
In one embodiment of the invention, the main battery bag storehouse also include first switch unit, common switch unit and
First memory cell；The auxiliary battery bag storehouse also includes the second memory cell；The discharge and recharge path includes being exclusively used in the master
The main path and the confession main battery bag and the common path of the common discharge and recharge of auxiliary battery bag of battery bag discharge and recharge；Described
One switch element is arranged on the main path, for controlling the discharge and recharge of the main battery bag；The common switch unit is set
It is placed on the common path, for controlling the discharge and recharge of the main battery bag and the auxiliary battery bag；First storage is single
It is first to be connected with the main battery bag and described control unit, for preserving the related data of the main battery bag；Described second deposits
Storage unit is connected with the auxiliary battery bag and described control unit, for preserving the related data of the auxiliary battery bag.
The invention also discloses a kind of electric automobile, the electric automobile uses double source battery bag as described above.
The invention also discloses a kind of management method of double source battery bag, applied to the entire car controller of electric automobile, and
The auxiliary battery bag storehouse of the double source battery bag is removably mounted in the electric automobile by mechanical quick change construction；It is described double
The management method of source battery bag includes：Step S31, receive the continual mileage demand of driver；Step S32, judge the driving
Mileage requirement：When the continual mileage demand is less than default first mileage threshold value, do not prompt that the auxiliary battery bag storehouse is installed,
And jump to step S34；When the continual mileage demand is more than the first mileage threshold value, then the auxiliary battery is installed in prompting
Bao Cang；Step S33, detect whether the auxiliary battery bag storehouse installs well using the control unit of the double source battery bag：If so,
Then jump to step S34；If it is not, then prompt early warning；Step S34, adjust the power output of the double source battery bag.
In one embodiment of the invention, the step S32 also includes：Whether big continue to judge the continual mileage demand
In default second mileage threshold value, in this way, the then auxiliary battery bag storehouse of the prompting installation with high electricity, then jump to the step
Rapid S33；If it is not, the then auxiliary battery bag 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 bag, applied to the entire car controller of electric automobile, and
The auxiliary battery bag storehouse of the double source battery bag is removably mounted in the electric automobile by mechanical quick change construction；It is described double
Source battery bag management system includes：Receiving module, the continual mileage demand provided for receiving driver；Judge control mould
Block, for continual mileage demand to be judged and controlled according to default first mileage threshold value and the second mileage threshold value；Detection
Module, for detecting whether the auxiliary battery bag storehouse installs well using the control unit of the double source battery bag；Prompt early warning
Module, for the judge control result and/or the testing result of the detection module according to the judge control module, to driving
Person makes prompting or early warning；Adjusting module, for adjusting the power output of the double source battery bag；Memory module, for preserving
The first mileage threshold value and the second mileage threshold value.
As described above, a kind of double source battery bag and electric automobile of the present invention, have following advantageous effects：
1) present invention uses the battery bag of different battery core standards respectively as main battery bag and auxiliary battery bag, and passes through DC/
DC converters control the discharge and recharge of auxiliary battery bag, ensure that the discharge-rate of auxiliary battery bag 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 high energy
The defects of than between battery core multiplying power discharging and life-span；
2) by the present invention in that electrokinetic cell (main battery bag and auxiliary battery bag) with different battery core standards so that double source electricity
Chi Bao saves 10%-30% cost compared with galvanic cell group；
3) present invention can also ensure that dynamic property, the economy of the vehicle of electric automobile are not influenceed and reduced by battery；
4) invention enhances the safety redundancy of electric automobile, even if a battery bag breaks down, driver also can
Car is reached into destination or 4S maintenances；On the premise of meeting the needs of driver's trip, mileage anxiety is eliminated, again can be with
The holistic cost of electrokinetic cell system is reduced, enhances vehicle competitiveness；
5) because auxiliary battery bag storehouse is removably, so the present invention can be according to the continual mileage demand of driver to double source
Battery bag is managed, and for different continual mileage demands, prompts installation to have the auxiliary battery of auxiliary battery bag of different electricity
Bao Cang so that the main battery bag storehouse of double source battery bag can carry out flexible combination with different auxiliary battery bag storehouses, to meet difference
Continual mileage, adaptively meet 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 bag disclosed in the embodiment of the present invention.
Fig. 2 is shown as the structural representation of the disclosed double source battery bag using hard switching of the embodiment of the present invention.
Fig. 3 is shown as a kind of theory structure schematic diagram of double source battery bag disclosed in second embodiment of the invention.
Fig. 4 is shown as a kind of theory structure schematic diagram of double source battery bag disclosed in third embodiment of the invention.
Fig. 5 is shown as the theory structure schematic diagram of another double source battery bag disclosed in third embodiment of the invention.
Fig. 6 is shown as a kind of schematic flow sheet of the management method of double source battery bag disclosed in the embodiment of the present invention.
Fig. 7 is shown as a kind of theory structure schematic diagram of the management system of double source battery bag disclosed in the embodiment of the present invention.
Component label instructions
110 main battery bags
120 first switch units
130 first detection units
140 main battery bag storehouses
150 first memory cell
210 auxiliary battery bags
220 DC/DC converters
230 second detection units
240 auxiliary battery bag storehouses
250 second memory cell
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 adjusting modules
550 prompting warning modules
560 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 specific realities different in addition
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 not conflicting, following examples and implementation
Feature in example can be mutually combined.
Refer to accompanying drawing.It should be noted that the diagram provided in following examples only illustrates this hair in a schematic way
Bright basic conception, then in schema only display with relevant component in the present invention rather than according to component count during actual implement,
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 invention provides a kind of double source battery bag and electric automobile, the battery bag for employing different battery core standards is distinguished
As main battery bag and auxiliary battery bag, and by the discharge and recharge of the auxiliary battery bag of DC/DC converters control, it ensure that auxiliary battery bag
Discharge-rate is remained in certain scope, and can constant output；And during if there is discharge power deficiency, then by main electricity
Chi Bao is supplemented.Also, main battery bag storehouse and auxiliary battery bag storehouse are carried out separation design by the present invention so that main battery bag and
Auxiliary battery bag can not only use different battery core standards, and auxiliary battery bag storehouse can also be selected as desired, then removable
It is arranged in electric automobile with unloading.In this way, more meeting the demand of the different continual mileages of driver, entirety is avoided
Crossing for battery bag designs, and reduces the cost of vehicle.Also, the detachable auxiliary battery bag storehouse is directed to, discloses an arbitrage
The method and system being managed with entire car controller to double source battery bag
Embodiment 1
Present embodiment discloses a kind of double source battery bag applied to electric automobile, as shown in figure 1, including：Main battery bag
Storehouse 140 and auxiliary battery bag 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 bag storehouse 240 includes：Auxiliary battery bag 210, DC/DC converters 220.Wherein,
Main battery bag storehouse 140 is the main source of electric car electric energy, and it is fixedly mounted on electric automobile, is to change
Become and change；Auxiliary battery bag storehouse 240 is the aiding sources of electric car electric energy, and it is detachably accepted to electric automobile
On, and be connected with main battery bag storehouse 140.Preferably, auxiliary battery bag storehouse 240 and electric automobile are carried out by mechanical quick change construction
Between replacing.That is, auxiliary battery bag storehouse 240 is can be according to the battery health and/or vehicle of auxiliary battery bag 210
Continual mileage demand is changed, and so can more efficiently aid in main battery bag 110, to meet the different need of driver
Ask.
The first end of DC/DC converters 220 and the second end are connected with total anode of auxiliary battery bag 210 and total negative terminal respectively,
Total positive output end OUT1 of 3rd end respectively with total anode and double source battery bag 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 bag, has been thusly-formed main battery bag 110 and auxiliary
The discharge and recharge path of battery bag 210, such as chain lines of accompanying drawing 1 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, the branching path is that main battery bag 110 is special；Bypass footpath (the institute of auxiliary battery bag 210 in Fig. 1
Solid line) be branching path in discharge and recharge path where auxiliary battery bag 210, the branching path is that auxiliary battery bag 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 bag 210 in charge and discharge process
Middle be used in conjunction with path.
Main battery bag 110 and auxiliary battery bag 210 can both use the battery bag of identical battery core standard, can also use difference
The battery bag of battery core standard.The battery core standard for the battery bag being previously mentioned in the present embodiment includes but is not limited to：Profile form, material
Material, rated voltage, capacity, production time etc..
Preferably, the highest end of charge voltage of the auxiliary battery bag 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 bag of better performances, preferably power energy mixed type battery core, can
Daily continual mileage after enough meeting battery bag in groups, the instantaneous power of crest discharge can be met again.Under normal circumstances, 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 bag 210 is adopted
Compare battery core with the less high energy of cycle life.As it was previously stated, auxiliary battery bag 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 bag in groups after continual mileage can freely be arranged in pairs or groups according to vehicle demand.It is preferred that
Ground, the cycle life of auxiliary battery bag 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 bag 210 can both meet the needs of driver is for trip, eliminate mileage anxiety, can reduce again dynamic
The holistic cost of power battery bag, enhance 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 bag.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 bag 210 carry out charge and discharge.
DC/DC converters 220 are a switch power modules, by by the boost in voltage of auxiliary battery bag 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 bag simultaneously
Pressure is by boosting or is depressured in the operating voltage range of auxiliary battery bag 210, and auxiliary battery bag 210 is charged.This implementation
For example by DC/DC converters 220, identical or phase must be maintained at main battery bag 110 by having broken traditional auxiliary battery bag 210
Near voltage platform, influence of the main battery bag 110 to auxiliary battery bag 210 is overcome, reduces each side of auxiliary battery bag 210
(performance, voltage) requirement so that the different schemes of auxiliary battery bag 210 can apply to the double source battery bag of the present invention；Also, also
It can 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 bag 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 bag 210 is discharged, DC/DC converters 220 pass through
Boost mode, to control the discharge power of auxiliary battery bag 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 bag 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 (accompanying 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 bag 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 up 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 loop 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 bag, and ensure main battery bag
110th, the high-voltage safety of auxiliary battery bag 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 bag 210.Therefore, in the present embodiment, main battery bag storehouse 140 also includes the first detection unit 130 and public affairs
Detection unit 320 altogether, auxiliary battery bag storehouse 240 also includes the 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, the working condition of first switch unit 120 etc. of main battery bag 110.
Second detection unit 230 is the relevant information for detecting auxiliary battery bag 210 and/or DC/DC converters 220, bag
Include but be not limited to：Voltage, the electric current, the working condition of DC/DC converters 220 etc. of auxiliary battery bag 210.
Common detection unit 320 is the relevant information for detecting common path, is included but is not limited to：The electricity of common path
Pressure, electric current, the working condition of the 3rd switch element 310.
It should be noted that the first detection unit 130, the 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 condition 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 bag 210, according to the first detection unit 130
The temperature conditions detected with the second detection unit 230, can be to main battery bag 110, DC/DC converters 220 when temperature is too high
And/or auxiliary battery bag 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 bag of the present embodiment, because auxiliary battery bag storehouse 240 is replaceable, therefore, starting
Auxiliary battery bag storehouse 240 is detected during work, to ensure whether auxiliary battery bag storehouse 240 installs well.Also, in order to detect
Accuracy, second memory cell 250 is also specially equipped with each auxiliary battery bag storehouse 240, corresponding to preserving
The related data of auxiliary battery bag 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 bag, includes but is not limited to：The production time of battery bag, battery bag 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 bag before last time power-off, includes but is not limited to：Power-off time, failure letter
Breath, dump energy, cell health state, total voltage, single battery core voltage etc..
Detection of the control unit 400 to auxiliary battery bag storehouse 240 is except the related data preserved in the second memory cell 250
Outside, the testing result and common detection unit 320 for being also dependent on the second detection unit 230 for the voltage of auxiliary battery bag 210 are right
The voltage detecting result of common path.Only in the voltage and common path of the auxiliary battery bag 210 for detecting auxiliary battery bag storehouse 240
Voltage identical in the case of, can just judge that auxiliary battery bag 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 the first detection unit 130 and the second detection unit 230,
The electricity of main battery bag 110 and/or auxiliary battery bag 210, dump energy, 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 bag 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 also 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 delivery comes, refer to according to control
Order is controlled to first switch unit 120, the switch element 310 of DC/DC converters 220 and the 3rd；
Second, control unit 400 is to be dependent on the first detection unit 130, the second detection unit 230 and common detection unit
320 testing result, is judged, to enter to first switch unit 120, the switch element 310 of DC/DC converters 220 and the 3rd
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 memory cell 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 bag 210 is identical.Control unit 400 is one
Possesses the chip of data processing function, it is to the first detection unit 130, the 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 dump energy of main battery bag 110 with the power for coming from electric automobile
Ask to control the working condition of DC/DC converters 220：
When the dump energy of main battery bag 110 is more than the first power threshold, control unit 400 controls DC/DC converters
220 are not worked, i.e., auxiliary battery bag 210 is discharged without electric discharge by main battery bag 110；
When 110 dump energy of main battery bag is less than the first power threshold, control unit 400 controls DC/DC conversions
Device 220 is started working so that auxiliary battery bag 210 takes over main battery bag 110 and starts to discharge.Also, in the electric discharge of auxiliary battery bag 210
When power is more than the power demand of electric automobile, auxiliary battery bag 210 also charges while electric discharge to main battery bag 110；
It can not meet that the power demand of electric automobile is in the discharge power of auxiliary battery bag 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 bag 210 is discharged, when the dump energy 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 bag 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 present invention, will not be proposed by the invention with solution in the present embodiment
The less close unit of technical problem relation introduces, but this is not intended that in the present embodiment and other units are not present.
It should be noted that the diagram provided in the present embodiment only illustrates the basic conception of the present invention in a schematic way,
Then the component relevant with the present invention is only shown in schema rather than is painted according to component count, shape and the size during actual implement
System, kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its assembly layout kenel also may be used
Can be increasingly complex.
Embodiment 2
Present embodiment discloses a kind of double source battery bag applied to electric automobile, as shown in figure 3, including：Main battery bag
Storehouse 140 and auxiliary battery bag 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 bag storehouse 240 only includes auxiliary battery bag 210.
Double source battery bag disclosed in the present embodiment is only DC/DC converters 220 with double source battery bag disclosed in embodiment 1
Installation site it is different, it is arranged in main battery bag storehouse 140.Correspond, the second detection unit 230 is only used for realization pair
The detection of the voltage of auxiliary battery bag 210, electric current, temperature and insulaion resistance, and the first detection unit 210 is except for detecting main electricity
Outside voltage, electric current, temperature and the insulaion resistance of pond bag 110 and the working condition of first switch unit 120, it is additionally operable to detect
The working condition of DC/DC converters 220 in main battery bag 140.
The operation principle and annexation of whole double source battery bag, it is identical with embodiment 1, it will not be repeated here.
Embodiment 3
Present embodiment discloses a kind of double source battery bag applied to electric automobile, as shown in figure 4, including：Main battery bag
Storehouse 140 and auxiliary battery bag 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 bag 210 and second in auxiliary battery bag storehouse 240
Close unit 260.Wherein, second switch unit 260 is be connected to total anode of auxiliary battery bag 210 and DC/DC converters 220 the
Between one end.Due to controlling the DC/DC converters 220 of auxiliary battery bag 210 not to be arranged on auxiliary electricity simultaneously with auxiliary battery bag 210
In Chi Bao storehouses 240, therefore, considering based on security, second switch unit 260 is additionally arranged in total anode of auxiliary battery bag 210,
So that auxiliary battery bag storehouse 240 is safer during dismounting.
Also, in the double source battery bag shown in Fig. 4, the second detection unit 230 except the voltage to auxiliary battery bag 210,
Outside electric current, temperature and insulaion resistance are detected, also the working condition of second switch unit 260 is detected.For DC/
The detection of the working condition of DC converters 220 equally changes by the first detection unit 130 to realize.
Further, as shown in figure 5, can also be in auxiliary battery bag storehouse 240, the total negative terminal and DC/DC of auxiliary battery bag 210
3rd switch element 270 is set between second end of converter 220, to reach to the dual of the security in auxiliary battery bag storehouse 240
Protection.Also, in the double source battery bag shown in Fig. 5, the second detection unit 230 except to the voltage of auxiliary battery bag 210, electric current,
, will also be to the working condition of the switch element 270 of second switch unit 260 and/or the 3rd outside temperature and insulaion resistance are detected
Detected.Detection for the working condition of DC/DC converters 220 equally changes by the 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 bag of the present embodiment is similarly same as Example 1,
This is just repeated no more.Simply, when being controlled to auxiliary battery bag 210, only in second switch unit 260 or second switch
, just can be by controlling the working conditions of DC/DC converters 220 when the switch element 270 of unit 260 and the 3rd is closed at, control
Make the discharge and recharge of auxiliary battery bag 210；Otherwise, as long as the switch element 270 of second switch unit 260 or the 3rd 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 bag, applied to having used such as embodiment 1,2 or 3 disclosures
Double source battery bag electric automobile entire car controller (Vehicle Control Unit), with realize to double source battery bag
Main battery bag storehouse and the management in auxiliary battery bag storehouse.
As shown in fig. 6, the management method of the double source battery bag of the present embodiment includes：
Step S31, receive 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 Shanghai self-driving and come and go Suzhou, that is to say, that continual mileage demand is in 220 kms.It should be noted that the present embodiment
The continual mileage demand of disclosed reception driver, it 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 guarantor of the present invention
In the range of shield.
Step S32, judge the continual mileage demand of driver：
When continual mileage demand is less than the first mileage threshold value, then prompt that auxiliary battery bag is not installed, and jump to step
S34；
When continual mileage demand is more than the first mileage threshold value, then auxiliary battery bag is installed in prompting, and jumps to step S33；
Preferably, in order to realize the more accurate management to double source battery bag, 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 bag 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 bag 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.
Because the auxiliary battery bag storehouse of the separate type double source battery bag 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 bag storehouse.Also, according to different continual mileage demands, the battery bag storehouse that installation possesses different electricity can be prompted as auxiliary
Battery bag storehouse.For example, Shanghai self-driving comes and goes Suzhou, continual mileage demand is at 220 kilometers, as long as therefore according to low battery
Auxiliary battery bag storehouse can meet demand.
Step S33, detect whether auxiliary battery bag storehouse installs well using the control unit of double source battery bag：
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 bag to auxiliary battery bag storehouse has had been described in detail in embodiment 1,
No longer write herein.
Step S34, the power output of double source battery bag is adjusted, different auxiliary battery bag storehouses varies in weight, uneasy in selection
When filling the auxiliary battery bag storehouse of auxiliary battery bag storehouse or installation with low battery, system can adaptively reduce power output, 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 bag had both included the power output of adjustment main battery bag, also included adjustment
The power output of main battery bag and auxiliary battery bag.
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 multiple steps are decomposed into, as long as comprising identical logical relation, all in the protection domain of this 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 bag, applied to the double source electricity used such as embodiment 1
The entire car controller of Chi Bao electric automobile.And the management system of the double source battery bag is connected with double source battery bag.
As shown in fig. 7, the management system of the battery bag of the present embodiment includes：Receiving module 510, control module 520 is judged,
Detection module 530, adjusting 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 bag 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 bag 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 bag storehouse of electricity.
Detection module 530 is used to detect whether auxiliary battery bag storehouse installs well using the control unit of double source battery bag, and
In the case where detecting that auxiliary battery bag storehouse is not installed well, by prompting warning module 550 to carry out early warning.
Adjusting module 540 is used for the power output for adjusting double source battery bag.
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 bag, auxiliary battery bag 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 present invention, will not be proposed by the invention with solution in the present embodiment
The less close unit of technical problem relation introduces, but this is not intended that in the present embodiment and other units are not present.
And it is seen that the present embodiment is the system embodiment corresponding with second embodiment, the present embodiment can be with
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, repeat no more here.Correspondingly, the relevant technical details mentioned in the present embodiment are also applicable in fourth embodiment
In.
In summary, a kind of double source battery bag of the invention and electric automobile, using the battery bag of different battery core standards
Respectively as main battery bag and auxiliary battery bag, and by the discharge and recharge of the auxiliary battery bag 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 during if there is discharge power deficiency, then by
Main battery bag is supplemented, and this measure effectively compensate for the defects of high energy is than between battery core multiplying power discharging and life-span；The present invention passes through
Use the electrokinetic cell (main battery bag and auxiliary battery bag) of different battery core standards so that double source battery bag saves compared with galvanic cell group
About 10%-30% cost；The present invention can also ensure that the dynamic property of the vehicle of electric automobile, economy are not influenceed by battery
And reduce；Invention enhances the safety redundancy of electric automobile, even if a battery bag breaks down, driver also can be by car
Reach destination or 4S maintenances；On the premise of meeting the needs of driver's trip, mileage anxiety is eliminated, can be reduced again
The holistic cost of electrokinetic cell system, enhance vehicle competitiveness；Because auxiliary battery bag storehouse is removably, so the present invention can
Double source battery bag is managed according to the continual mileage demand of driver, for different continual mileage demands, prompts installation
The auxiliary battery bag storehouse of auxiliary battery bag with different electricity so that the main battery bag storehouse of double source battery bag can be with different auxiliary electricity
Chi Bao storehouses carry out flexible combination, to meet different continual mileages, adaptively meet the continual mileage demand of driver.Institute
So that 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 (15)
1. a kind of double source battery bag, it is characterised in that applied to electric automobile, the double source battery bag includes：Main battery bag storehouse
With auxiliary battery bag storehouse；
The main battery bag storehouse is fixed in the electric automobile, including main battery bag and control unit；The auxiliary battery bag storehouse
It is removably mounted on by mechanical quick change construction in the electric automobile, including auxiliary battery bag；The main battery Bao Cangyu institutes
Auxiliary battery bag storehouse is stated to be connected；
The double source battery bag also includes DC/DC converters, and its first end and the second end are connected to the auxiliary battery bag
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 bag
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 bag respectively；So as to be formed
The discharge and recharge path of the main battery bag and the auxiliary battery bag；And the DC/DC converters be located at the main battery bag storehouse or
The auxiliary battery bag storehouse；
Described control unit is connected with the DC/DC converters, the main battery bag and the auxiliary battery bag respectively, the control
Unit realizes the charge and discharge control to the auxiliary battery bag by controlling the working conditions of the DC/DC converters；
The main battery bag is different with the battery core standard of the auxiliary battery bag.
2. double source battery bag according to claim 1, it is characterised in that：The battery core standard includes：Profile form, material
Material, rated voltage, capacity, production time.
3. double source battery bag according to claim 1, it is characterised in that：The auxiliary battery bag including the auxiliary battery bag
Storehouse is to carry out selecting installation according to actual continual mileage demand.
4. double source battery bag 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 bag
System；In the auxiliary battery bag charging, charging termination condition of the described control unit according to the auxiliary battery bag, described in control
DC/DC converters are by boosting or being depressured the charging process to realize to the auxiliary battery bag.
5. double source battery bag according to claim 4, it is characterised in that：When the end of charge voltage of the auxiliary battery bag is small
In the case of the discharge cut-off voltage of the main battery bag：In the auxiliary battery bag electric discharge, described control unit control institute
DC/DC converters are stated by control of the realization to the discharge power of the auxiliary battery of boosting, to meet needed for the electric automobile
Discharge power；In the auxiliary battery bag charging, described control unit controls the DC/DC converters to be realized by being depressured
To the charging process of the auxiliary battery bag.
6. double source battery bag according to claim 1, it is characterised in that：Described control unit is to be dependent on the main battery
The dump energy of bag and power demand from the electric automobile control the working condition of the DC/DC converters.
7. double source battery bag according to claim 6, it is characterised in that：
When the dump energy 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 working, and the auxiliary battery bag takes over the main battery and unwraps beginning electric discharge, and is filled simultaneously for the main battery bag
Electricity；
When the dump energy 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 bag according to claim 6, it is characterised in that：Discharge condition is in the auxiliary battery bag, 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 bag
Electric discharge is supplemented bag simultaneously.
9. double source battery bag 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 bag also includes the second switch unit in the auxiliary battery bag storehouse；
The second switch unit is connected between total anode of the auxiliary battery bag and the first end of the DC/DC converters,
For controlling the discharge and recharge of the auxiliary battery bag.
10. double source battery bag according to claim 9, it is characterised in that：The double source battery bag is also included positioned at described
The 3rd switch element in auxiliary battery bag storehouse；3rd switch element be connected to total negative terminal of the auxiliary battery bag with it is described
Between second end of DC/DC converters, for controlling the discharge and recharge of the auxiliary battery bag.
11. double source battery bag according to claim 1, it is characterised in that：The main battery bag storehouse also includes first switch
Unit, common switch unit and the first memory cell；The auxiliary battery bag storehouse also includes the second memory cell；
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 bag；
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 bag
Charge and discharge；
First memory cell is connected with the main battery bag and described control unit, for preserving the phase of the main battery bag
Close data；
Second memory cell is connected with the auxiliary battery bag and described control unit, for preserving the phase of the auxiliary battery bag
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 bag.
A kind of 13. management method of double source battery bag, it is characterised in that：Applied to the entire car controller of electric automobile, and it is described
The auxiliary battery bag storehouse of double source battery bag is removably mounted in the electric automobile by mechanical quick change construction；The double source electricity
Chi Bao management method includes：
Step S31, receive the continual mileage demand of driver；
Step S32, judge the continual mileage demand：
When the continual mileage demand is less than default first mileage threshold value, do not prompt that the auxiliary battery bag storehouse is installed, and jump
Go to step S34；
When the continual mileage demand is more than the first mileage threshold value, then the auxiliary battery bag storehouse is installed in prompting；
Step S33, detect whether the auxiliary battery bag storehouse installs well using the control unit of the double source battery bag：If so,
Then jump to step S34；If it is not, then prompt early warning；
Step S34, adjust the power output of the double source battery bag.
14. the management method of double source battery bag according to claim 13, it is characterised in that：The step S32 also includes：
Continue to judge whether the continual mileage demand is more than default second mileage threshold value, in this way, then prompting installation has height
The auxiliary battery bag storehouse of electricity, then jump to the step S33；If it is not, then prompting installation has the auxiliary electricity of low battery
Chi Bao storehouses, then jump to step S33.
A kind of 15. management system of double source battery bag, it is characterised in that：Applied to the entire car controller of electric automobile, and it is described
The auxiliary battery bag storehouse of double source battery bag is removably mounted in the electric automobile by mechanical quick change construction；The double source electricity
Pond bag management system includes：
Receiving module, the continual mileage demand provided for receiving driver；
Control module is judged, for being commented according to default first mileage threshold value and the second mileage threshold value continual mileage demand
Sentence and control；
Detection module, for detecting whether the auxiliary battery bag storehouse installs well using the control unit of the double source battery bag；
Warning module is prompted, for the judge control result according to the judge control module and/or the inspection of the detection module
Result is surveyed, prompting or early warning are made to driver；
Adjusting module, for adjusting the power output of the double source battery bag；
Memory module, for preserving the first mileage threshold value and the second mileage threshold value.
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| CN112757882A (en) * | 2019-11-06 | 2021-05-07 | 观致汽车有限公司 | Battery pack and management method and system thereof |
| CN111231690A (en) * | 2020-03-20 | 2020-06-05 | 张东才 | System for charging electric vehicle by using solar energy, and related device and method |
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