CN107433874A - Electric control system of electric vehicle and its charge/discharge control method with telecommunication - Google Patents
Electric control system of electric vehicle and its charge/discharge control method with telecommunication Download PDFInfo
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- CN107433874A CN107433874A CN201710632705.9A CN201710632705A CN107433874A CN 107433874 A CN107433874 A CN 107433874A CN 201710632705 A CN201710632705 A CN 201710632705A CN 107433874 A CN107433874 A CN 107433874A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/14—Preventing excessive discharging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a kind of electric control system of electric vehicle and its charge/discharge control method with telecommunication, described electric-control system includes polling module, signal processor, discharge module, charging module and communication module；The signal output part of the signal input part connection polling module of signal processor, its signal output part connect the signal input part of discharge module, charging module respectively；The signal input part connection battery pack both ends of polling module and its series connection tap terminals of each modular battery；The signal input part of communication module is connected with the signal output part of signal processor or polling module；Information data can be provided with this electric-control system and charge/discharge control method by telecommunication for the data receiver outside electric car, and signal acquisition, processing are carried out to the real-time voltage of modular battery, control capability falls behind modular battery and is not overcharged by deep discharge and not, extends the service life of battery of electric vehicle group.
Description
Technical field
The present invention relates to the power supply design field of electric car, more particularly to a kind of electric car electricity with telecommunication
Control system and its charge/discharge control method.
Background technology
Power battery pack and its charge and discharge control are one of technical bottlenecks of electric automobile, and power battery pack requires high electricity
Pressure, it is necessary to numerous batteries are used in series, management of charging and discharging control to monomer can cost it is too high, it is practical in often selection control to mould
Block battery, the generally described modular battery of industry are A-battery groups, such as more lattice conjoined structures of lead accumulator, and monomer
Internally not only connected but also lithium battery pack in parallel, and also refered in particular to cell.
The management object of electric car routine discharge and recharge is the voltage for controlling battery pack both ends, causes to hold in battery pack during electric discharge
Measure backward modular battery deep discharge, terminate the life-span in advance, the modular battery that can be led to capacity lagging during charging again overcharged and
Accelerate capacity attenuation；Also technical scheme proposes charging voltage managing object control to modular battery, in fact, this be directed to
Although the technical scheme of modular battery charging can be filled each modular battery, because the modular battery in whole group battery holds
Amount is unbalanced, can be led to that the electric discharge of more depth occurs when next whole group is discharged for the modular battery of capacity lagging, accelerate capacity
Decay.
Why power battery pack is difficult to reach projected life in practicality, and most common technical problem is the failure to send out in time
The modular battery of capacity lagging in existing battery pack, therefore, industry wishes to seek to a kind of remote monitoring electric car series battery
Middle capacity lagging modular battery, effectively prevent capacity lagging modular battery by deep discharge and the technical scheme being overcharged, drop
The cost that low battery of electric vehicle uses.
The content of the invention
It is an object of the present invention to be directed to technological deficiency existing for electric car series battery routine management of charging and discharging, carry
For a kind of electric-control system for being different from routine techniques, the electric-control system can monitor capacity in battery pack in real time by telecommunication and fall
Modular battery afterwards, and with preventing that capacity lagging modular battery, can be effective by deep discharge and the control function being overcharged
Extend the service life of battery of electric vehicle group, reduce the replacement cost of battery.
To realize above-mentioned technical purpose, the invention provides a kind of electric control system of electric vehicle with telecommunication, this is
System includes：Polling module, signal processor, charging module, discharge module and communication module；Described signal processor at least wraps
Voltage signal comparing function and logical process function are included, its signal input part connects the signal output part of the polling module, its
Signal output part connects the signal input part of described discharge module and charging module respectively；The power input of the discharge module
End connects the battery pack both ends of the electric car, its power output end connection discharge load；The power supply output of the charging module
End connection battery pack both ends, its power input connect the external power source of electric car；The signal input part of the polling module connects
Connect the series connection tap terminals of each modular battery in battery pack both ends and battery pack；The electric control system of electric vehicle by outside
Data receiver transport module battery data realizes described telecommunication, and is dropped to and set with the voltage of any modular battery
Definite value is discharged battery group termination, and rising to setting value in charging next time with the voltage of capacity lagging modular battery performs corresponding behaviour
Make.
In the present invention, the battery pack that the electric control system of electric vehicle with telecommunication uses is coordinated to include at least two
The modular battery being connected in series, and serial interface of the modular battery both ends in battery pack is provided with tap terminals；Described communication
Module is to the transmitting terminal of the data receiver remote transmission data of outside, the data receiver being arranged on outside electric car
Equipment is the receiving terminal of communication module remote transmission data.
In above-mentioned technical proposal, the automatically controlled program for performing corresponding operating to battery pack in charging next time is built in charging
Module, the charging constant pressure value of charging module are controlled by the signal instruction of the signal processor.
In above-mentioned technical proposal, the signal output part of the signal input part of the communication module and the signal processor connects
Connect, or be connected with the signal output part of the polling module.Described communication module receives to realize to electric car external data
Equipment (information receiving end) transmits the information transmitting terminal of storage data in the electric-control system.
In above-mentioned technical proposal, described telecommunication includes the wireless communication networks of any wave band and any form of letter
Cease internet, LAN.
One kind as above-mentioned technical proposal is improved, and the polling module of the electric control system of electric vehicle, signal processor, is put
Discrete setting or selective combination settings or shared integrated module are set between electric module, charging module and communication module.Institute
The selective combination settings stated, including partial function the control submodule of each module or repertoire it is integrated, example
Partial function or repertoire such as the polling module are integrated in signal processor, discharge module collection integrated with charging module
Into design.The power supply output form of the discharge module is any, including the ripple that direct current, inversion are regular alternating current electricity and electric current
Shape, frequency are any.
Based on the above-mentioned electric control system of electric vehicle with telecommunication, present invention also offers a kind of electric car is automatically controlled
The charge/discharge control method of system, this method include：
Step 1) carries out data using polling module to the modules battery or/and the real-time discharge voltage of battery pack
Inspection；
The data that step 2) is obtained by step 1) inspection, the data using communication module the data to outside
Receiving device real time remote transmits, and compared with storing setting value in the data and its by signal processor, when detecting
When the voltage of any modular battery drops to interior storage setting value, send corresponding signal control discharge module and terminate to the electricity
Pond group electric discharge；
Step 3) passes through signal processor record and storage steps 1) inspection is obtained or step 2) the battery group termination is put
The data of the minimum capacity lagging modular battery of magnitude of voltage that the electric moment obtains；
Step 4) monitors the capacity lagging mould in charging next time by the signal record of step 3) using signal processor
The voltage rise condition of block battery, when the perseverance that interior storage setting is risen to by charging voltage for monitoring the capacity lagging modular battery
When pressing charging upper limit value Vm/V, the real-time voltage that corresponding signal control charging module is charged with the moment to the battery pack is sent
As constant voltage values；When the electric current that charging module is charged to battery pack with the constant voltage values drops to built-in setting value,
It is transformed to constant float charge voltage value floating charge.
In above-mentioned technical proposal, described step 2) also includes：Using communication module to the data outside the electric car
Receiving device remote transmission modules battery is terminating the real-time voltage data of discharging time.
In above-mentioned technical proposal, the step 4) is by storing the constant-voltage charge higher limit Vm/V of setting, root in signal processor
Determined according to the modular battery species of the battery pack, the described preferred national technical standards of constant-voltage charge higher limit Vm/V or industry
To the recommendation of the kind of module battery.
A kind of electric control system of electric vehicle and its charge/discharge control method advantage with telecommunication of the present invention is：
The modular battery discharge condition reflected in real time in battery pack with the electric control system of electric vehicle of the present invention, and to battery
The real-time voltage state of modules battery carries out signal acquisition, processing in group, and control capability falls behind modular battery and do not put deeply
Electricity and be not overcharged, so as to effectively extend battery pack service life.
Brief description of the drawings
Fig. 1 is signal monitoring structural representation of the conventional electric car electric-control system to battery pack.
Fig. 2 a be in the present invention electric control system of electric vehicle to the signal monitoring control structure schematic diagram of battery pack.
Fig. 2 b are the structure rough schematic views of the electric control system of electric vehicle shown in Fig. 2 a.
Fig. 2 c are another electric control system of electric vehicle logic control constructs schematic diagrames for setting communication module.
Fig. 3 is the electric control system of electric vehicle logic control constructs schematic diagram of signal processor and polling module combination settings.
Fig. 4 is the electric control system of electric vehicle logic control constructs schematic diagram of charging module and discharge module combination settings.
It is electronic with discharge module combination settings and signal processor and polling module combination settings that Fig. 5 is charging module
Car electric-control system logic control constructs schematic diagram.
Accompanying drawing identifies：
1st, battery pack 1a, the first modular battery 1b, the second modular battery
2nd, signal processor 3, polling module 5, discharge module
6th, charging module 7, discharge load 8, communication module
9th, conventional discharge management system 10, normal charge management system
Embodiment
With reference to the accompanying drawings and examples further to a kind of electric control system of electric vehicle with telecommunication of the present invention
And its charge/discharge control method is described in detail.
Fig. 1 is one and forms most simply stating for battery of electric vehicle group by the first modular battery 1a and the second modular battery 1b
Example, it is using the both ends of two modular battery 1a/1b series connection for voltage signal monitoring in Fig. 1 examples, the characteristics of charge and discharge control
Object, conventional discharge management system 9 are all connected with the both ends of battery pack, this simple discharge and recharge with normal charge management system 10
Control method and the untrue actual discharge voltage for predicting two modular battery 1a/1b, must when two modular batteries are unbalanced
So there is a wherein modular battery that deep discharge occurs.
Referring to shown in Fig. 2 a, in one embodiment of the electric control system of electric vehicle provided by the invention with telecommunication
In, electric control system of electric vehicle includes：Polling module 3, signal processor 2, discharge module 5, charging module 6 and communication module 8, its
In, battery pack 1 is made up of two the first modular battery 1a being connected in series and the second modular battery 1b, and the first modular battery
1a and the second modular battery 1b serial interface are provided with series connection tap terminals；Signal processor 2 has at the logic of voltage signal
Function is managed, its signal input part connects the voltage signal output end of polling module 3, and its three signal output parts connect electric discharge respectively
The signal input part of module 5, charging module 6 and communication module；The two of the power input connection battery pack 1 of discharge module 5
End, its power output end connect the discharge load 7 of battery pack；The both ends of the power output end connection battery pack 1 of charging module 6,
The external charging power supply that its power input connects the battery pack 1 (represents logic control relation, Fig. 2 a, which are not indicated, to be put to be clear
The electric charging module 6 of module 5/ and the connection at the both ends of battery pack 1)；Three signal input parts of polling module 3 connect the first mould respectively
The both ends and series connection tap terminals that block battery 1a and the second modular battery 1b are connected in series.In the embodiment, polling module 3 is logical
Cross and real-time inspection is carried out to two modular battery 1a/1b discharge voltage data, by communication module 8 modules battery
Or/and the real-time discharge voltage data real-time Transmission of battery pack 1 gives the data receiver being arranged on outside electric car, and by believing
Number processor 2 is compared with interior storage data, when the magnitude of voltage for detecting any modular battery in two modular battery 1a/1b
When dropping to interior storage setting value, send signal control discharge module 5 and terminate and battery pack 1 is discharged；In the discharge process, at signal
Reason device also monitors and records the data of the minimum capacity lagging modular battery of discharge voltage value in battery pack 1, is battery pack next time
Charging provides monitoring objective foundation, and is that foundation controls charging module to battery by charging voltage using the capacity lagging modular battery
Group performs next charging operations.
In the present invention, described electric control system of electric vehicle can with the conventional discrete setting of management of charging and discharging system of electric car,
Also can be by its partial function or repertoire and described conventional management of charging and discharging System all-in-one Integration；Described discharge load
7 include motor driven systems, control panel system and other use dc source device；The battery pack of described electric car
Or/and modular battery, including the secondary cell used that can arbitrarily charge repeatedly, for example, lithium battery, lead battery, nickel-zinc cell and
Metal hydrogen storage battery；Described modular battery can be that series/parallel forms inside cell or multiple cells
Integral structure product, the latter can be considered the higher modular battery of external voltage.It is more than described electric car, including a wheel
The power car using battery as drive energy.
The internal structure of signal processor 2 generally comprises signaling interface, operating circuit and some function sub-modules, such as
Interior storage, timing, computing submodule, due to the development of large scale integrated circuit, the one of in the market a large amount of signal logic processing
Body IC-components, therefore in technical solutions according to the invention, the function that signal processor 2 needs only is illustrated, it is right
Inside modules structure is not limited in any way.Storage setting value, the state of preferred module battery 1a/1b species in the signal processor 2
Depending on family's technical standard or industry recommendation, such as when modular battery 1a/1b selects nominal 12V lead accumulator, national standard is recommended
Electric discharge lower limit be 10.50V.
Discharge module 5 has is controlled electric discharge and by the function of the priority acccess control of signal processor 2 by electric car operation device,
It can also be provided that the priority acccess control interface circuit of electric car conventional discharge management system, i.e. discharge module 5 can be intactly independent
Design, can also electric car conventional discharge management system add priority acccess control interface circuit and be formed, including be arranged to
The logic power switch that battery power discharge output end is connected in series.Discharge module 5 is led to by the method for controlling priority of signal processor 2
Frequently with 0/1 digital control logic, in one embodiment, discharge module 5 and the discrete setting of battery power discharge management system,
Discharge module 5 is the priority acccess control interface circuit of electric discharge management system, and the priority acccess control interface circuit is controlled by signal processor 2
0/1 instruction of output, normal work when discharge module 5 receives " 1 " signal, the not work of discharge module 5 when receiving " 0 " signal
Make.
Charging module 6 has to the function of the constant-potential charge of battery pack 1, and to the monitoring of the charging current of battery pack 1 and
The function of constant current charge, the instruction of its constant voltage values charging are preferentially controlled by signal processor 2, charging current monitoring and
The control program of constant current charge is built in charging module 6；When charging module 6 receives the constant pressure that signal processor 2 sends
Instruction (signal processor 2 is risen to setting value by what polling module 3 monitored capacity lagging modular battery by charging voltage), it is right
Battery pack 1 performs corresponding constant voltage charging operation, and continues executing with the constant current charge some time of built-in setting.Charge mould
Block 6 can independent design, the constant pressure value that can be charged by the priority acccess control of signal processor 2 also can be added in normal charge management system
Logic interfacing and formed.
Polling module 3 can be independently arranged, and its inspection function can be also integrated in signal processor 2.Market is exclusively used in electricity
The integrated circuit modules of signal inspection are pressed typically to add microprocessor to form by A/D conversion special chips, A/D conversion special chips are born
The analog signal of voltage is converted to data signal by duty, and microprocessor is controlled at different moments to certain module in series battery
Battery is sampled, and is compared by the sampling time, it is possible to the real-time voltage of certain modular battery is accurately known, using this kind of special
Polling module, the first modular battery 1a and the second modular battery 1b real-time electricity shown in Fig. 2 a are predicted from its output end can
Pressure, the precision of the integrated circuit modules of this kind of special inspection signal transacting is general higher, and signal input part is also more, suitable for crowd
The real-time voltage inspection of multimode battery., can also be by electricity when the signal input part enough used times for the signal processor 2 chosen
The signal processing function of pressure inspection is integrated in signal processor, and the signal input part of the voltage polling is typically designed as (n+1) road
Input channel, n is the modular battery number of elements in series battery, and during work, the A/D transform subblocks inside signal processor are born
The analog signal of voltage is converted to data signal by duty, and microprocessor is controlled at different moments to certain modular battery in battery pack
Sampled, the real-time voltage of certain modular battery is more equally would know that by the sampling time.
In a polling module 3 and the interface-embodiment of battery pack, examined in determination is the 72V of low-speed electronic automobile using
Battery pack, the battery pack are composed in series by 6 12V lead accumulators, and its both ends adds 5 tap terminals totally 7 external signaling interfaces, point
Do not connect with 7 signal input parts of polling module, polling module selection A/D conversion special chips, its signal output part is with believing
The signal input part of number processor connects, and A/D conversion special chips are responsible for the analog signal of voltage being converted to data signal, by
Signal processor 2 controls the polling module being sampled at different moments to the modular battery in series battery, passes through sampling
Time compares, and can know the real-time voltage of modular battery.Real-time electric discharge electricity of the polling module 3 except monitoring each modular battery
Pressure, the voltage at battery pack both ends can also be monitored simultaneously.In the following drawings and explanation, polling module 3 and string are no longer specially indicated
Join the inspection schematic construction of modular battery in battery pack 1, the electric control system of electric vehicle schematic diagram of inspection structure shown in Fig. 2 a simplifies
For shown in Fig. 2 b.
Communication module 8 is to realize that the electric-control system is carried by telecommunication to the data receiver outside electric car
For real time information data, signal processor 2 is provided with the submodule of storage in data, and the signal input part of communication module 8 can be such as figure
It is connected, can be also connected with the signal output part of the polling module, such as with the signal output part of the signal processor shown in 2b
Shown in Fig. 2 c.Described real time information data, including the first modular battery 1a described in above example and the second modular battery 1b
It is real-time/terminate discharge voltage value, and battery pack it is real-time/terminate discharge voltage value；Described termination electric discharge, including signal
Processor 2 sends signal control discharge module 5 and terminates electric discharge to battery pack 1, and discharge load 7 in conventional operation to electricity
The termination electric discharge of pond group 1.By the teledata receiving device outside electric car, the real-time electric discharge shape of each modular battery can be grasped
State, it is easy to grasp the state of battery pack at any time in electric car operation process, detects the module of capacity lagging exactly in maintenance
Battery.
In electric control system of electric vehicle of the present invention with telecommunication, described polling module 3, signal processor
2nd, the charging module 6 of discharge module 5 and communication module 8 discrete can be set, also alternative combination settings, above-mentioned by voltage polling mould
The function of block 3 is integrated in one embodiment that signal processor 2 is selective combination settings, as shown in Figure 3；Similarly, discharge mould
The function of block 5 and charging module 6 can also share integrated module setting, as shown in Fig. 4 and Fig. 5；Even can by polling module 3,
The repertoire that signal processor 2, discharge module 5, charging module 6 include communication module 8 shares integrated module setting.
Present invention also offers a kind of charge/discharge control method of the electric control system of electric vehicle with telecommunication, this method
Modules battery or/and the discharge voltage data of battery pack 1 are connect by telecommunications network to the data outside electric car
Receiving unit carries out teletransmission, and the discharge voltage of any modular battery drops to setting value as termination electric discharge using in battery pack
Foundation, using the capacity lagging modular battery in battery pack by charging voltage as monitoring object, filled by signal processor control
Electric module performs the charging operations of flotation constant pressure value to whole group battery.It is described with reference to the electric control system of electric vehicle shown in figure 2-5
Charge/discharge control method specifically includes following steps：
Step 1) enters line number using polling module 3 to the real-time discharge voltage of the modules battery or/and battery pack 1
According to inspection；
The data that step 2) is obtained by step 1) inspection, the number using communication module 8 the data to outside
According to receiving device real time remote transmit, and by signal processor 2 by the data and its in store setting value compared with, work as detection
To any modular battery voltage drop to it is interior storage setting value when, send corresponding signal control discharge module 5 terminate to institute
Battery pack 1 is stated to discharge；
Step 3) passes through the record of signal processor 2 and storage steps 1) inspection obtains or the step 2) battery pack 1 terminates
The data of the minimum capacity lagging modular battery of magnitude of voltage that discharging time obtains；
Step 4) monitors the capacity lagging in charging next time by the signal record of step 3) using signal processor 2
The voltage rise condition of modular battery, when monitor the capacity lagging modular battery risen to by charging voltage it is interior storage setting
During constant-voltage charge higher limit Vm/V, transmission corresponding signal control charging module 6 is charged real-time with the moment to the battery pack 1
Voltage is as constant voltage values；The electric current that charging module 6 is charged to battery pack 1 with the constant voltage values drops to built-in setting
During value, constant float charge voltage value floating charge is transformed to.
It is foregoing in existing conventional techniques, charge and discharge control equipment is to monitor the voltage at battery of electric vehicle group both ends, can be led
Cause modular battery deep discharge and the overcharge of capacity lagging；If being respectively filled with electricity to each modular battery, electricity can be caused again
The capacity of each modular batteries of Chi Zuzhong is more unbalanced.The charge/discharge control method of the present invention, is with capacity lagging modular battery
Discharge voltage to reach lower limit be according to terminating to whole group battery discharge, prevent the modular battery deep discharge of capacity lagging, the above
The data of capacity lagging modular battery described in step 3), including its discharge voltage value, or its position note in a power
Recall, the technical purpose of the data is recorded using signal processor 2, be to provide the target of voltage monitoring for charging next time of battery pack 1
Foundation.
By the record of step 3) described above, being risen to by charging voltage with capacity lagging modular battery of being charged in next time
The Vm/V moment determines the constant pressure value to the charging of whole group battery, and this constant pressure value is according to the species of the modular battery by signal
Manage storage setting flotation logic in device 2.Such as in the battery pack for 6 nominal 12V lead accumulators series connection that low-speed electronic car is commonly used,
The national standard recommendation of nominal 12V lead accumulator constant-voltage charges is 14.7V, when signal processor 2 monitors the capacity lagging module
When being risen to 14.7V by charging voltage of battery, send signal control charging module 6 this moment is charged to whole group battery it is real-time
Voltage is as constant pressure value；The flotation refers to that this constant pressure value determined by whole group battery charging real-time voltage is not fixed, should
Constant pressure value determines at the time of being and rise to 14.7V by the charging voltage of the capacity lagging modular battery, so as to prevent capacity from falling
Modular battery afterwards is overcharged.
Charging module 6 is transformed to floating charge to battery pack 1 in constant-voltage charge latter stage in the step 4), is that one kind is continuously electricity
Persistently the electric design method for preventing overcharge again of supplement, described float charge voltage value depend on battery variety, its preferred value to pond group 1
For well known to industry technology personnel；Such as the nominal 12V lead accumulators that low-speed electronic car is conventional, the preferred recommendation of its float charge voltage
Be worth for 13.50V, when low-speed electronic car is made up of 6 nominal 12V lead accumulator, the float charge voltage of lead accumulator group it is excellent
It is 81.00V to select recommendation.
Following examples are only used for further illustrating technical scheme, and these technical schemes can be used alone,
It can add or combine and use other mature technologies.
Embodiment 1
A kind of electric control system of electric vehicle of four-wheel electric automobile using is designed, the electric control system of electric vehicle includes polling module
3rd, signal processor 2, discharge module 5, charging module 6 and communication module 8, wherein, the battery pack 1 that the supporting electric automobile uses
Formed by 6 12V150Ah lead accumulator is electrically coupled in series, and the serial interface of 6 batteries is provided with series connection tap terminals, i.e. the 72V
Battery pack adds 5 tap terminals totally 7 external signaling interfaces by its both ends, and 7 signal input parts with polling module 3 connect respectively
Connect；Signal processor 2 has voltage signal comparing function and logical process function, its signal input part connection polling module 3
Signal output part, its three signal output parts connect the signal input of the signal input part of discharge module 5, charging module 6 respectively
End and the signal input part of communication module 8, the control logic structural representation of each functional module is as shown in Figure 2 a.
The both ends of the power input connection battery pack 1 of discharge module 5, the electric discharge of its power output end connection battery pack are born
7 are carried, the discharge module 5 adds priority acccess control interface circuit by electric car conventional discharge management system and formed, and the priority acccess control connects
Mouthful circuit is controlled by 0/1 instruction of the output of signal processor 2, the normal work when receiving " 1 " signal of discharge module 5, when connecing
Do not worked when receiving " 0 " signal.The both ends of the power output end connection battery pack 1 of charging module 6, its power input connection institute
The external power source of electric car is stated, the charging module 6 is built-in with some charging procedures, and the specific constant pressure value that charges is controlled by signal transacting
The command adapted thereto that device 2 exports.
When the electric control system of electric vehicle works, signal processor 2 sends " 1 " signal, discharge module to control discharge module 5
5 are controlled regular picture by electric car manual operation device；Polling module 3 is obtained by the inspection to 6 lead accumulators and put in real time
Piezoelectric voltage data, polling period are 3 seconds, and by communication module 86 modular batteries and the real-time discharge voltage of battery pack 1
Data are transmitted by telecommunication real time remote, and telecommunication uses the remote radio communication net of any wave band；Meanwhile inspection mould
The real-time discharge voltage data for each battery that block 3 obtains each inspection sends signal processor 2 to, by being provided with interior storage
The signal processor 2 of module is compared with the data set, when signal processor 2 detects any electricity in 6 lead accumulators
When the voltage in pond drops to the 10.5V of interior storage setting, terminated by sending " 0 " signal to control discharge module 5 to 72V electricity
The electric discharge of pond group.During the electric discharge observing and controlling, signal processor 2 is also relatively minimum to electric discharge real-time voltage or terminates discharging time
The battery for reaching 10.5V first makes record, and the record is being believed with position signalling of the battery in the power circuit of battery pack 1
The interior storage of number processor 2 is kept in, as the voltage monitoring target foundation to charging next time of battery pack 1.
Charging procedure is set as：Charging module 6 with 25A constant currents to the initiation of charge of battery pack 1, when signal processor 2
Monitor that the charging voltage for the battery that voltage in discharge process is relatively minimum or discharge voltage reaches 10.5V first rises to
During 14.7V, control signal is sent to charging module 6, at the time of charging module 6 receives instruction, this moment is filled to battery pack 1
The real-time voltage of electricity is used as constant voltage values, with the constant real-time voltage value, limits 25A current versus cells group 1 and continues to charge,
When the charging current of battery pack 1 drops to 4.00A naturally, it is floating to battery pack 1 for 81.00V to be transformed to constant float charge voltage value
Fill.
Electric control system of electric vehicle described in the present embodiment can be used family real by the teledata receiving device of external dedicated
When obtain the real-time voltage value of each battery discharge in battery pack, be easy to accurately to detect in the four-wheel electric vehicle maintenance,
The battery of capacity lagging is changed, reduces the turnover rate of the four-wheel electric automobile batteries group.
Embodiment 2
In the present embodiment, the discharge module 5 of embodiment 1 and charging module 6 are carried out into integrated design, with reference to shown in figure 4
Electric control system of electric vehicle structure.
In embodiment 1, communication module 8 be the real-time discharge voltage data of 6 modular batteries and battery pack 1 is passed through it is remote
Cheng Tongxin real-time Transmissions, the present embodiment are further configured to the interior storage programming of signal processor 2：When the termination pair of discharge module 5
During battery power discharge, control communication module 8 is terminating electric discharge by telecommunication to 6 batteries of data receiver real-time Transmission
The magnitude of voltage at moment, the magnitude of voltage send " 0 " signal control discharge module 5 including signal processor 2 and terminate electric discharge (wherein at least
The voltage of one battery drops to the 10.5V of storage setting in signal processor 2), and signal processor 2 is in " 1 " signal shape
State but electric automobile conventional manual manipulate discharge module 5 and terminate two kinds of situations that battery pack 1 is discharged.Family can be used in the present embodiment
It is more very clear to the discharge condition data of 6 batteries of the battery of electric vehicle group 1 by teledata receiving device.
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (7)
1. a kind of electric control system of electric vehicle with telecommunication, it is characterised in that including polling module（3）, signal processor
（2）, discharge module（5）Charging module（6）And communication module（8）, the signal processor（2）Signal input part connection described in
Polling module（3）Signal output part, its signal output part connects the discharge module respectively（5）And charging module（6）Letter
Number input；The discharge module（5）Power input connect the battery pack of the electric car（1）Both ends, the output of its power supply
End connection discharge load（7）；The charging module（6）Power output end connection battery pack（1）Both ends, its power input connect
Connect the external power source of electric car；The polling module（3）Signal input part connection battery pack（1）Both ends and battery pack（1）
In each modular battery series connection tap terminals；The electric control system of electric vehicle passes through the data receiver transport module electricity to outside
Pond data realize described telecommunication, and drop to setting value to battery pack with the voltage of any modular battery（1）Termination is put
Electricity, setting value is risen to the voltage of capacity lagging modular battery in charging next time and performs corresponding operating.
2. the electric control system of electric vehicle according to claim 1 with telecommunication, it is characterised in that described to be filled in next time
Electricity is to battery pack（1）The automatically controlled program for performing corresponding operating is built in charging module（6）, charging module（6）Charging constant pressure value
It is controlled by the signal processor（2）Signal instruction.
3. the electric control system of electric vehicle according to claim 1 with telecommunication, it is characterised in that the communication module
（8）Signal input part and the signal processor（2）Signal output part connection, or with the polling module（3）Signal
Output end connects.
4. the electric control system of electric vehicle according to claim 1 with telecommunication, it is characterised in that described is long-range logical
Letter includes the wireless communication networks and any form of information interconnected network, LAN of any wave band.
5. the electric control system of electric vehicle according to claim 1 with telecommunication, it is characterised in that the polling module
（3）, signal processor（2）, discharge module（5）, charging module（6）And communication module（8）Between it is discrete setting or selective group
Close and set, or shared integrated module is set.
6., should based on the charge/discharge control method of any electric control system of electric vehicle with telecommunication of Claims 1 to 5
Method includes：
Step 1）Utilize polling module（3）To the modules battery or/and battery pack（1）Real-time discharge voltage enter line number
According to inspection；
Step 2）By step 1）The data that inspection obtains, utilize communication module（8）Data from the data to outside
Receiving device real time remote transmits, and by signal processor（2）By the data compared with storage setting value in it, work as detection
To any modular battery voltage drop to it is interior storage setting value when, send corresponding signal control discharge module（5）Termination pair
The battery pack（1）Electric discharge；
Step 3）Pass through signal processor（2）Record simultaneously storage steps 1）Inspection obtains or step 2）The battery pack（1）Terminate
The data of the minimum capacity lagging modular battery of magnitude of voltage that discharging time obtains；
Step 4）By step 3）Signal record, next time charging utilize signal processor（2）Monitor the capacity lagging mould
The voltage rise condition of block battery, when the perseverance that interior storage setting is risen to by charging voltage for monitoring the capacity lagging modular battery
When pressing charging upper limit value Vm/V, corresponding signal control charging module is sent（6）With the moment to the battery pack（1）The reality of charging
When voltage as constant voltage values；Charging module（6）To battery pack（1）In the electric current to be charged with the constant voltage values drops to
When installing definite value, constant float charge voltage value floating charge is transformed to.
7. the charge/discharge control method of the electric control system of electric vehicle with telecommunication, its feature exist according to claim 6
In described step 2）Also include：Utilize communication module（8）It is each to the data receiver remote transmission outside the electric car
Individual modular battery is terminating the real-time voltage data of discharging time.
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Cited By (1)
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