CN103675686A - Electric vehicle power battery charging and discharging operating condition simulation system and method - Google Patents
Electric vehicle power battery charging and discharging operating condition simulation system and method Download PDFInfo
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- CN103675686A CN103675686A CN201210352323.8A CN201210352323A CN103675686A CN 103675686 A CN103675686 A CN 103675686A CN 201210352323 A CN201210352323 A CN 201210352323A CN 103675686 A CN103675686 A CN 103675686A
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
Abstract
The invention discloses an electric vehicle charging and discharging operating condition simulation system. The operating condition simulation system comprises: a power battery for storing the electric power required by an electric vehicle, wherein the power battery is a power battery pack or a partial power battery pack; a charging and discharging unit for performing charging and/or discharging on the power battery; and a monitoring device for monitoring the charging or discharging state of the power battery and for controlling the charging or discharging process of the power battery, wherein the monitoring device further comprises a detection unit, a control unit and an operating condition simulation instruction generation unit, the operating condition simulation instruction generation unit is used to generate charging and/or discharging voltage, current or power instruction values at the current time according to operating condition set parameters, the control unit is used to control the charging and/or discharging process of the charging and discharging unit on the power battery according to the charging and/or discharging voltage, current or power instruction values at the current time, and the detection unit is used to detect actual operating parameters of the power battery in the charging and/or discharging process.
Description
Technical field
The present invention relates to electric power application, and more particularly, relate to a kind of electric vehicle dynamic cell and discharge and recharge Simulated System and method.
Background technology
At present, be reply global climate problem and energy starved problem, countries in the world are all in the clean regenerative resource of develop actively.Orthodox car has further aggravated day by day serious environmental pollution and energy shortage problem.In order to overcome the dependence of orthodox car to non-renewable resources, the electric automobile of electric power as the energy all usingd greatly developing in each state.Electric automobile efficiency is high, it is low to discharge, and can fundamentally reduce the dependence to oil, increases the utilization of regenerative resource, reduces the discharge of carbon dioxide and pollutant, obtained paying attention to widely.Countries in the world are dropped into a huge sum of money one after another, carry out electric vehicle engineering research and development, especially, aspect the electric power system of core, drive system, have carried out large quantity research, have obtained considerable progress.
Electric automobile refers to all or part of by motor-driven automobile, mainly contains at present pure electric automobile, hybrid vehicle, FC-EV and external charge formula hybrid vehicle etc.In order to provide electric power to electric automobile, must setting can provide for electric automobile the electrokinetic cell of power.In actual use, thereby conventionally need to simulate the correlation parameter that obtains electrokinetic cell to the performance of electrokinetic cell, therefore need to discharge and recharge Work condition analogue or emulation to electrokinetic cell.In addition, power battery pack loops and discharges and recharges under the various operating modes of automobile, so the charge-discharge performance of power battery pack, service life cycle, battery pack temperature variation, battery capacity variation etc. also can affect the operating characteristic of electric battery.Batteries management system can Real-Time Monitoring electric battery total current, total voltage, single Battery pack module voltage, battery pack temperature, and can estimating battery pool-size, transmitting data in real time is to whole-control system.Batteries management system plays an important role to the safety of hybrid-power battery group.In the prior art, not high to battery voltage, current sample precision, this causes the battery capacity estimation out of true to electric battery; Do not detect battery pack temperature characteristic; Adopt Serial Communication to cause data transmission unreliable with the communication of power assembly control system, poor anti jamming capability more.
Therefore need to provide a kind of electric vehicle dynamic cell to discharge and recharge Simulated System and method, can analog electrical electrical automobile to battery charge and discharge process, for research and development designer studies electric automobile, discharge and recharge related data and theoretical support be provided.The correlation parameter that electrokinetic cell discharges and recharges discharges and recharges Simulated System by electric vehicle dynamic cell and completes.Simulation adopts popular, to be simple and easy to use picture output and mode of operation, Structured Design, Universal Database access mode, multi-process, multithread mode, make system have high reliability, man-machine interactive operation, high-quality picture disply and extensibility flexibly easily.
Summary of the invention
In order to address the above problem, according to an aspect of the present invention, provide a kind of electric vehicle to discharge and recharge Simulated System, described Simulated System comprises: electrokinetic cell, be used for storing the needed electric power of electric vehicle, described electrokinetic cell is electrokinetic cell bag or part electrokinetic cell bag; Charge/discharge unit, for charging to electrokinetic cell and/or discharging; Watch-dog, for monitoring the charge or discharge state of electrokinetic cell, and control for the charge or discharge process to electrokinetic cell, described watch-dog also comprises: detecting unit, control module and Work condition analogue instruction generation unit, Work condition analogue instruction generation unit wherein, generates the command value of the charging of current time and/or the voltage of electric discharge, electric current or power according to operating mode setup parameter; Control module, controls charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the command value of the voltage of the charging of current time and/or electric discharge, electric current or power; And detecting unit, detect the actual operation parameters in power battery charging and/or discharge process.Preferably, utilize display device to show the actual operation parameters in power battery charging and/or discharge process.Preferably, utilize Parameter storage equipment to store the actual operation parameters in power battery charging and/or discharge process.Preferably, control module can adopt two kinds of modes of Open loop and closed loop to control the charging of electrokinetic cell and/or discharge process.
According to a further aspect in the invention, provide a kind of electric vehicle that utilizes to discharge and recharge the method that Simulated System carries out Work condition analogue, wherein said simulation system comprises: electrokinetic cell, be used for storing the needed electric power of electric vehicle, described electrokinetic cell is electrokinetic cell bag or part electrokinetic cell bag; Charge/discharge unit, for charging to electrokinetic cell and/or discharging; Watch-dog, for monitoring the charge or discharge state of electrokinetic cell, and control for the charge or discharge process to electrokinetic cell, described watch-dog also comprises: control module and Work condition analogue instruction generation unit, it is characterized in that, described method comprises: step 1: the operating mode setup parameter that reads charging and/or electric discharge; Step 2: Work condition analogue instruction generation unit generates the command value of the charging of current time and/or the voltage of electric discharge, electric current or power according to operating mode setup parameter; Step 3: control module is controlled charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the command value of the voltage of the charging of current time and/or electric discharge, electric current or power; Step 4: determine whether to reach the termination condition of operating mode, if reached, enter step 5, otherwise return to step 3; Step 5: determined whether all operating modes, if do not completed, obtained next operating mode setup parameter, got back to step 2; If completed, finish.
According to a further aspect in the invention, a kind of electric vehicle that utilizes discharges and recharges the method that Simulated System carries out Work condition analogue, wherein said simulation system comprises: electrokinetic cell, and for storing the needed electric power of electric vehicle, described electrokinetic cell is electrokinetic cell bag or part electrokinetic cell bag; Charge/discharge unit, for charging to electrokinetic cell and/or discharging; Watch-dog, for monitoring the charge or discharge state of electrokinetic cell, and control for the charge or discharge process to electrokinetic cell, described watch-dog also comprises: detecting unit, control module and Work condition analogue instruction generation unit, it is characterized in that, described method comprises: step 1, reads the operating mode setup parameter relevant to charging and/or discharge regime; Step 2, Work condition analogue instruction generation unit generates the initial order value of voltage, electric current or the power of charging and/or electric discharge according to operating mode setup parameter; Step 3, control module is controlled charge/discharge unit according to described initial order value and electrokinetic cell is carried out to charging and/or the electric discharge trial run of a period of time; Step 4, detecting unit detects the actual operation parameters of electrokinetic cell between trial run period, and described actual operation parameters is sent to Work condition analogue instruction generation unit; Step 5, Work condition analogue instruction generation unit generates Work condition analogue modified value according to described initial order value and actual operation parameters, step 6, control module is controlled charge/discharge unit according to described Work condition analogue modified value and electrokinetic cell is charged and/or discharge; Step 7: determine whether to reach the termination condition of current charging and/or discharge regime, if reached, enter step 8, otherwise return to step 6; Step 8, has determined whether whole chargings and/or discharge regime, if do not completed, enters step 9, obtains the operating mode setup parameter relevant to next charging and/or discharge regime, gets back to step 2; If completed, finish.
Preferably, wherein said charge/discharge unit comprises: at least one AC/DC Bidirectional variable-flow module, and the two-way copped wave module of at least one DC/DC.Preferably, the teleswitch that the two-way copped wave module series connection of wherein said at least one DC/DC is connected to hand switch and/or is controlled by described watch-dog.Preferably, wherein said at least one AC/DC Bidirectional variable-flow module is connected at least one capacitor with the points of common connection of the two-way copped wave module of at least one DC/DC.Wherein the two-way copped wave module of at least one DC/DC comprises at least two two-way copped wave modules of DC/DC, described watch-dog can be controlled described Simulated System and operate in following state: described at least one AC/DC Bidirectional variable-flow module is in not connecting the state of electrical network, and at least one operates in respectively charge or discharge state at least two two-way copped wave modules of DC/DC described in simultaneously; Or described at least one AC/DC Bidirectional variable-flow module is in maintaining state, at least one operates in respectively charge or discharge state at least two two-way copped wave modules of DC/DC described in simultaneously.Preferably, wherein said AC/DC Bidirectional variable-flow module and the two-way copped wave module of at least one DC/DC are provided with output dc voltage sensor and output DC current sensor, and the actual operation parameters that wherein said detecting unit detects in power battery charging and/or discharge process is specially: utilize described output dc voltage sensor and/or output DC current sensor to detect the actual operation parameters in power battery charging and/or discharge process.
Preferably, described operating mode comprises base regime, and described base regime is at least one in following content: constant voltage charging, and its duty parameter comprises charging voltage and cut-off condition; Constant current charge, its duty parameter comprises charging current and cut-off condition; Permanent power charging, its duty parameter comprises charge power and cut-off condition; Constant voltage, continuous current, permanent power step charge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition; According to voltage, electric current and/or powertrace charging, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition; Constant voltage electric discharge, its duty parameter comprises sparking voltage and cut-off condition; Constant current discharge, its duty parameter comprises discharge current and cut-off condition; Permanent power discharge, its duty parameter comprises discharge power and cut-off condition; Constant voltage, continuous current, permanent power segmentation electric discharge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition; According to voltage, electric current and/or powertrace electric discharge, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition; And electrokinetic cell is standing, its duty parameter comprises time of repose.
Preferably, also be provided with device cabinet, the measuring instrument of electrokinetic cell DC voltage, electrokinetic cell DC current and/or charge/discharge unit alternating voltage is installed in described device cabinet, the measuring instrument of wherein said electrokinetic cell DC current has positive and negative range, the forward and the negative current that in the time of can monitoring charging and/or electric discharge, produce.Preferably, described operating mode also comprises: the composite condition being formed according to combination order and/or multiplicity by base regime.Preferably, described Work condition analogue instruction generation unit is according to the command value computed correction of the voltage of the charging of described actual operation parameters and current time and/or electric discharge, electric current or power, to obtain the revision directive value of the charging of current time and/or the voltage of electric discharge, electric current or power; And control module, controls charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the revision directive value of the voltage of the charging of current time and/or electric discharge, electric current or power.Preferably, described watch-dog also comprises floor data storage unit, and it stores at least one base regime data that identified by base regime sequence number, and described base regime data comprise base regime setup parameter; And/or, at least one composite condition data that identified by composite condition sequence number of floor data cell stores, described composite condition packet contains at least one in following content: base regime sequence number, base regime setup parameter, combination order or base regime multiplicity.
Accompanying drawing explanation
Read in conjunction with the drawings the following detailed description of preferred illustrative embodiment, these that the present invention may be better understood and further characteristics and advantages, wherein:
Fig. 1 shows the schematic diagram of electric vehicle charge-discharge system of the prior art;
Fig. 2 shows the schematic diagram that discharges and recharges Simulated System according to the electric vehicle dynamic cell of embodiment of the present invention;
Fig. 3 shows according to the schematic diagram of the device cabinet of the simulation system of embodiment of the present invention;
Fig. 4 shows the process flow diagram that discharges and recharges working condition simulation method according to the electric vehicle dynamic cell of embodiment of the present invention; And
The electric vehicle dynamic cell that Fig. 5 shows another embodiment of the present invention discharges and recharges the process flow diagram of working condition simulation method.
It should be noted that structure and/or material that these accompanying drawings are intended to the general characteristic of describing method, use in certain exemplary embodiments, and the description being intended to providing supplements below.Yet these accompanying drawings are not pro rata, and neither accurately reflect fine structure or the Performance Characteristics of the embodiment providing arbitrarily, and also should not be construed as by illustrative embodiments comprised numerical range or attribute are defined or limited.In each accompanying drawing, use same or identical Reference numeral to be intended to indication and have same or identical element or feature.
Embodiment
Although illustrative embodiments can be carried out various modifications and be adopted alternative form, its embodiment provides in the accompanying drawings as embodiment, and will be described in detail here.Yet, should be understood that, illustrative embodiments should be defined as to particular forms disclosed, on the contrary, illustrative embodiments is intended to contain and falls into right and will remove all modifications, equivalent and the substitute in scope.In the description of whole accompanying drawing, identical Reference numeral represents identical element.
Be understandable that, although may use first, second grade of term to describe various elements here, these elements should not limited by these terms.These terms are only for distinguishing an element and another element.For example, in the situation that not departing from illustrative embodiments scope, the first element also can be described as the second element, and similarly, the second element also can be described as the first element.As used herein, term "and/or" comprises combining arbitrarily and all of one or more relevant projects of listing.Be understandable that, when relating to that an element " is connected " with another element or when " coupling ", it can directly be connected or be coupled with other element, or can exist between its neutral element.On the contrary, when relating to that an element " is directly connected " with another element or when " direct-coupling ", the element in the middle of it not.Other word for relation between descriptive element should make an explanation in an identical manner (for example, " and ... between " with " and directly exist ... between ", " adjacent " and " direct neighbor " etc.).
Term used herein only, for describing specific implementations, is not intended to illustrative embodiments to limit.As used herein, singulative " ", " one " and " described " are also intended to comprise plural form, unless indicated clearly in context.What can also further understand is, term used herein " comprises ", " by ... form ", " comprising " and/or " containing " illustrate feature, integral body, step, operation, element and/or the element that has defined, but does not repel existence or increase one or more further features, integral body, step, operation, element, element and/or its combination.
Also it should be noted that, in some interchangeable implementations, related function/action can also be according to occurring in sequence of not relating in figure.For example, according to related function/action, in fact two figure that illustrate in a continuous manner can carry out concomitantly, or sometimes carry out in reverse order.
Unless be particularly limited, all terms used herein (comprising technology and scientific terminology) are identical with the implication that the person of an ordinary skill in the technical field of illustrative embodiments understands conventionally.Can also further understand, such as the term limiting with general dictionary, should be interpreted as consistently with they implications in the context of association area, and be not interpreted as idealized or excessive formal implication, unless be particularly limited here.
Illustrative embodiments and the corresponding part of describing in detail can be according to software or algorithms, and the symbol that the data bit in computer memory is operated represents to present.These explanations and expression be those of ordinary skills to this area their work a kind of mode of purport of other those of ordinary skill effective expression.Term as used herein, and normally used as its institute, algorithm is envisioned for to the self-congruent sequence of steps that causes expected result.This step is that those require the step that physical quantity is carried out to physical operations.Conventionally, although not necessarily, this tittle adopts and can store, transmits, combines, compares and carry out the form of the optical, electrical or magnetic signal of other operations.Verified (particularly for normally used reason) is sometimes called bit, numerical value, element, symbol, character, item, numeral etc. by these signals is easily.
In following explanation, to and (for example operate according to action, symbol in a flowchart) represents to describe indicative embodiment, wherein operate the function course that can be embodied as program module or comprise routine, program, object, element, data structure etc., wherein program module or function course are carried out and are specifically worked or realize specific summary data type, and can use existing hardware to realize on existing network element.Existing like this hardware can comprise one or more CPU (central processing unit) (CPU), digital signal processor (DSP), special IC, field programmable gate array (FPGA) computing machine etc.
Yet, it should be noted in the discussion above that all these terms and the similar term that are associated with suitable physical quantity are only the labels easily that is applied to this tittle.Unless specifically stated otherwise, or obviously obtain from discuss, term such as " processing ", " calculating ", " estimation ", " determining ", " demonstration " etc., relate to action and the processing of computer system or similar electronic computing device, the data that are expressed as physical quantity, amount of electrons in the RS of computer system are handled and to be converted to other similar data that are expressed as physical quantity in the such information-storing device of computer system memory or register or other, transmission or display device.
Also it should be noted that, the software of illustrative embodiments is realized aspect and on the program recorded medium of some forms, is encoded typically, or realizes on the transmission medium of some types.Computer-readable medium can be magnetic (for example, floppy disk or hard disk drive) or light (for example, compact disk ROM (read-only memory), or " CD ROM "), and can be read-only or random-access.Similarly, transmission medium can be twisted-pair feeder, concentric cable, optical fiber or other suitable transmission medium well known in the art.Illustrative embodiments is not limited to these aspects that any appointment realizes.
Fig. 1 shows the schematic diagram of electric vehicle charge-discharge system of the prior art.As shown in Figure 1, in the prior art, electric vehicle charge-discharge system comprises electrokinetic cell and charge/discharge unit.Preferably, electrokinetic cell is used for storing the needed electric power of electric vehicle.Conventionally, described electrokinetic cell is electrokinetic cell bag or part electrokinetic cell bag.Preferably, charge/discharge unit is for charging and/or discharge electrokinetic cell.Yet in the prior art, electric vehicle charge-discharge system does not possess conventionally to the monitoring equipment charging and/or discharge process is monitored and controlled.Thus, cannot know charging and/or the details of discharge process, cannot rechargeable battery and charging and/or discharge process be adjusted and be improved.Therefore, in prior art, there is the system and method that is used to electric vehicle dynamic cell to discharge and recharge to simulate to a kind of, the system and method that the operating mode especially electric vehicle dynamic cell being discharged and recharged is simulated.
Fig. 2 shows the schematic diagram that discharges and recharges Simulated System according to the electric vehicle dynamic cell of embodiment of the present invention.As shown in Figure 2, electric vehicle dynamic cell discharges and recharges Simulated System and comprises: electrokinetic cell, charge/discharge unit and watch-dog.Preferably, described watch-dog further comprises: detecting unit, control module and Work condition analogue instruction generation unit.Described simulation system can realize the in the situation that of base regime or composite condition to electrokinetic cell charge and/simulation of discharge process, thereby monitor and simulates the charge and discharge process of control electrokinetic cell.Wherein, the parameter obtaining in charge and discharge process and related data can be advantageously as the bases of improving electrokinetic cell performance.
According to the preferred embodiment of the present invention, described electrokinetic cell is used for storing the needed electric power of electric vehicle, and described electrokinetic cell can be electrokinetic cell bag or part electrokinetic cell bag.Wherein, the driving motor that electrokinetic cell is electric automobile provides electric energy, and motor is mechanical energy by the electric energy conversion of electrokinetic cell, by gearing or direct drive of wheel and equipment.Preferably, the outlet of the electrokinetic cell in described system is in series with fuse, thus can be at voltage excessive or electric current electrokinetic cell is protected when excessive.Preferably, the correlation parameter of electrokinetic cell comprises with lower at least one: a) battery capacity: battery capacity is determined by battery discharge voltage * discharge current *, generally indicate with ampere-hour (Ah) in battery industry discharge time.B) fill (putting) electric rate: (putting) the electric rate of filling is that the electric charge of all told is put to (filling) complete needed time, as the standard speed of filling (putting) when electricity, be generally used for speed that explanation puts (filling) electricity and be how many.Such as the electric discharge of two hour rates refers to the electric current with 0.5C, the times of two hours, battery all told is discharged; 20 minutes rates represent battery specified electric quantity all to be discharged in 20 minutes with the electric current of 3C.On the battery specifications of manufacturer, also often with hour rate, represent standard discharge time, as long as be how many according to the convert discharge current that just can settle the standard of rated capacity.Conventionally in the specification that manufacturer provides, rated capacity is that the condition of discharging with 20 ℃ of temperature, 0.2C measures.C) nominal voltage: when battery has just dispatched from the factory, the electric potential difference between both positive and negative polarity is called the nominal voltage of battery.D) internal resistance: refer to that electric current flows through the suffered resistance of inside battery.The internal resistance of rechargeable battery is very little, generally will test by specialized equipment.Charging state internal resistance and the internal resistance of electric discharge state are variant, and the internal resistance of electric discharge state is slightly large, and less stable.Internal resistance is larger, and the energy of consumption is larger, and charging heating is larger.Along with increasing of battery access times, internal resistance meeting increases, and quality is poorer, and internal resistance increases faster.E) end of charge voltage: during accumulator full charge, the state that reached capacity of the active substance on pole plate, then continue charging, and the voltage of accumulator can not rise yet, and voltage is now called end of charge voltage.F) final discharging voltage: the minimum voltage allowing while referring to battery discharging.G) cycle life: the number of times that battery can repeat to discharge and recharge.Life-span and capacity are inversely proportional to, and with to discharge and recharge condition closely related, general charging current is larger, and the life-span is shorter.H) retention of charge: be often referred to self-discharge rate.Relevant with battery material, production technology and condition of storage, general temperature is higher, and self-discharge rate is higher.
According to the preferred embodiment of the present invention, described charge/discharge unit is for charging and/or discharge electrokinetic cell.Preferably, can utilize charge/discharge unit within a plurality of time periods, electrokinetic cell charged and/or discharge.For example, in very first time section, charge, within the second time period, first charge and discharge afterwards, within the 3rd time period, discharge and first discharge within the 4th time period and charge afterwards etc.Preferably, discharge cell comprises AC/DC Bidirectional variable-flow module, and the two-way copped wave module of at least one DC/DC.Wherein, the teleswitch that the two-way copped wave module series connection of described at least one DC/DC is connected to hand switch and/or is controlled by described watch-dog.Wherein, described AC/DC Bidirectional variable-flow module is connected at least one capacitor with the points of common connection of the two-way copped wave module of at least one DC/DC.Preferably, described AC/DC Bidirectional variable-flow module and the two-way copped wave module of at least one DC/DC are provided with output dc voltage sensor and output DC current sensor, the actual operation parameters while wherein utilizing described output dc voltage sensor and output DC current sensor to detect power battery charging and/or electric discharge.Preferably, the two-way copped wave module of at least one DC/DC is defined as and comprises at least two two-way copped wave modules of DC/DC.Preferably, in the situation that comprising at least two two-way copped wave modules of DC/DC, at described watch-dog, can control described Simulated System and operate in following state:
(1) described AC/DC Bidirectional variable-flow module is in not connecting the state of electrical network, and simultaneously, at least two two-way copped wave modules of DC/DC, at least one operates in respectively charge or discharge state.
(2) described AC/DC Bidirectional variable-flow module is in maintaining state, and simultaneously, at least two two-way copped wave modules of DC/DC, at least one operates in respectively charge or discharge state.Wherein in maintaining state, AC/DC Bidirectional variable-flow module mainly maintains the voltage stabilization of capacitor, and output power is zero or is approximately zero.
That is to say, described in guaranteeing, at least two two-way copped wave modules of DC/DC, have at least a two-way copped wave module of DC/DC to operate in charged state, and the two-way copped wave module of described at least two DC/DC have at least the two-way copped wave module of another DC/DC to operate in discharge condition.Illustrate, in the situation that thering are 5 two-way copped wave modules of DC/DC (being greater than 2), have 1 two-way copped wave module of DC/DC in charged state, have 4 two-way copped wave modules of DC/DC in charged state.Without any a two-way copped wave module of DC/DC, in charged state or discharge condition, be unallowed, for example, in the situation of above-mentioned 5 two-way copped wave modules of DC/DC, have 5 two-way copped wave modules of DC/DC not to be allowed in charged state.
Preferably, charge/discharge unit comprises at least one in following content to the mode of the charging of electrokinetic cell: constant voltage charging; Constant current charge; Permanent power charging; Constant voltage, continuous current, permanent power step charge; According to voltage, electric current or powertrace charging; Constant voltage electric discharge; Constant current discharge; Permanent power discharge; Constant voltage, continuous current, permanent power segmentation electric discharge; According to voltage, electric current or powertrace electric discharge.Preferably, can also comprise that electrokinetic cell is standing.
According to the preferred embodiment of the present invention, described watch-dog is used for monitoring the charge or discharge state of electrokinetic cell, and controls for the charge or discharge process to electrokinetic cell.In addition, watch-dog also can generate the command value of voltage, electric current or the power of satisfactory charging and/or electric discharge, to simulate according to instruction.Preferably, described in, meet the requirements such as being to meet user to require, meet test request, meet the requirement of the own performance of electrokinetic cell etc.Described watch-dog is realized above-mentioned functions by its inner element.Preferably, described watch-dog also comprises: detecting unit, control module and Work condition analogue instruction generation unit.
Preferably, Work condition analogue instruction generation unit is according to generate the command value of the charging of current time and/or the voltage of electric discharge, electric current or power according to operating mode setup parameter.Preferably, described operating mode setup parameter can be set in advance by system manager or user.Preferably, described operating mode setup parameter can be inputted by user before operation simulation system.Preferably, Work condition analogue instruction generation unit can generate according to current working setup parameter the initial order value of voltage, electric current or the power of satisfactory charging and/or electric discharge.Preferably, Work condition analogue instruction generation unit generates Work condition analogue modified value according to described initial order value and actual operation parameters.Preferably, described Work condition analogue instruction generation unit is according to the command value computed correction of the voltage of the charging of described actual operation parameters and current time and/or electric discharge, electric current or power, to obtain the revision directive value of the charging of current time and/or the voltage of electric discharge, electric current or power.
Wherein, simulation system (for example, the control module of watch-dog) is controlled charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the command value of the voltage of the charging of current time and/or electric discharge, electric current or power.For example, voltage during charging, electric current or power, and voltage, electric current or the power in when electric discharge.Preferably, described control module can carry out according to described initial order value control charge/discharge unit charging and/or the electric discharge trial run of a period of time to electrokinetic cell.Preferably, described control module can charge to electrokinetic cell and/or discharge according to described Work condition analogue modified value control charge/discharge unit.Preferably, described control module, controls charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the revision directive value of the voltage of the charging of current time and/or electric discharge, electric current or power.
Preferably, wherein said operating mode is the real work situation of charge/discharge unit when electrokinetic cell being charged and/or discharging.Preferably, described operating mode comprises base regime and composite condition.Described composite condition can be comprised of one or more base regimes.Preferably, the pattern that described base regime charges and/or discharges corresponding to charge/discharge unit, at least one in following content: constant voltage charging, its duty parameter comprises charging voltage and cut-off condition; Constant current charge, its duty parameter comprises charging current and cut-off condition; Permanent power charging, its duty parameter comprises charge power and cut-off condition; Constant voltage, continuous current, permanent power step charge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition; According to voltage, electric current and/or powertrace charging, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition; Constant voltage electric discharge, its duty parameter comprises sparking voltage and cut-off condition; Constant current discharge, its duty parameter comprises discharge current and cut-off condition; Permanent power discharge, its duty parameter comprises discharge power and cut-off condition; Constant voltage, continuous current, permanent power segmentation electric discharge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition; According to voltage, electric current and/or powertrace electric discharge, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition; And electrokinetic cell is standing, its duty parameter comprises time of repose.Preferably, described composite condition can be for example, in very first time section constant voltage charging; At the second time period constant voltage, continuous current, permanent power step charge; The 3rd time period discharged according to voltage curve; The 4th and five-stage repeat according to voltage curve electric discharge etc.
Actual parameter when preferably, Work condition analogue instruction generation unit carries out charge or discharge according to described Work condition analogue initial value and electrokinetic cell generates Work condition analogue modified value.Actual parameter while wherein carrying out charge or discharge according to described Work condition analogue initial value and electrokinetic cell generates Work condition analogue modified value and comprises: by sensor, detected and obtained the voltage of power battery charging or electric discharge and/or the actual parameter of electric current and/or power, based on described actual parameter and described Work condition analogue initial value, according to predefined control strategy, generate Work condition analogue modified value.Preferably, control module can start charge or discharge to electrokinetic cell according to described Work condition analogue modified value.Preferably, control module can adopt two kinds of modes of Open loop and closed loop to control the charge and discharge process of charge/discharge unit.
According to the preferred embodiment of the present invention, control module is controlled charge/discharge unit to the charging of electrokinetic cell and/or electric discharge according to the command value of the voltage of satisfactory charging and/or electric discharge, electric current or power.Preferably, detecting unit detects the actual operation parameters in power battery charging and/or discharge process.Preferably, described detecting unit detects the actual operation parameters of electrokinetic cell between trial run period, and described actual operation parameters is sent to Work condition analogue instruction generation unit.Preferably, wherein said actual operation parameters can comprise: the alternating voltage of (1) charging set, the alternating current of charging set, the DC current of the DC voltage of electrokinetic cell, electrokinetic cell, the temperature of the SOC of electrokinetic cell and/or electrokinetic cell; (2) duration of charging of charging from external power source, charging curve and/or charge capacity; (3) discharge time, discharge curve and/or discharge electricity amount while connecting load; (4) speed that discharges and recharges while connecting charge-discharge machine, discharge and recharge time, charging and discharging curve and/or charge/discharge electricity amount.Wherein, power battery charged state SOC(State of Charge), as the characterising parameter of battery capacity state, the residual capacity that its numerical value is defined as battery accounts for the ratio of battery capacity.Conventionally battery under uniform temperature is charged to endergonic state again and is defined as state-of-charge 100%, and the state that battery can not be emitted energy is again defined as to state-of-charge 0%.The above-mentioned status data of charge and discharge monitoring device storage is also controlled at least one electrokinetic cell charge/discharge unit.Preferably, can in various nonvolatile memories, store above-mentioned status data.
Fig. 3 shows according to the schematic diagram of the device cabinet of the simulation system of embodiment of the present invention.As shown in Figure 3, described cabinet is used for holding electrokinetic cell, charge/discharge unit and watch-dog.In addition in cabinet, can also comprise: sensor, communication unit, input equipment, display device, electrokinetic cell DC voltage measuring instrument, electrokinetic cell DC current measuring instrument, charge/discharge unit alternating voltage measuring instrument and/or battery management system.Preferably, electrokinetic cell is also furnished with power battery management system conventionally, in charge and discharge process, can communicate by letter with charge-discharge machine, coordinates charge-discharge machine to control charge and discharge process.The battery management system mating with electrokinetic cell can improve the utilization factor of battery, prevent that battery from occurring overcharging and overdischarge, the prolongation serviceable life of battery, the state of monitoring battery, the aspects such as the safety applications to battery when using in groups and life-time dilatation all play conclusive effect.Communication unit makes user can realize the Long-distance Control to simulation system.User can send to communication unit via networks such as wireless networks by control command, and communication unit is transmitted to watch-dog by control command.Preferably, user can be pre-entered or inputted Work condition analogue setting value before operation simulation system by input equipment.Preferably, display device can display simulation system repaiies relevant information, for example setup parameter, operation result, running status.Preferably, can utilize the function of the integrated input equipment of touch-screen and display device.
Preferably, the measuring instrument of electrokinetic cell DC voltage, electrokinetic cell DC current and/or charge/discharge unit alternating voltage is installed in cabinet, the measuring instrument of wherein said electrokinetic cell DC current has positive and negative range, the forward and the negative current that in the time of can monitoring charging and/or electric discharge, produce.
Preferably, described sensor can be sound transducer, smoke transducer, humidity sensor, temperature sensor etc.Preferably, described electric vehicle discharges and recharges simulation system and also comprises monitoring panel, and described monitoring panel is usually located at the front panel of cabinet.But those skilled in the art should understand, monitoring panel is not limited to the front panel at cabinet, and it can be set to be easy to simulation system to control conventionally.Described monitoring panel is used for arranging gauge tap, status indicator lamp and/or measuring instrument.Preferably, described system has been installed total power switch, and total power switch can disconnect the power supply of all primary equipments in cabinet after disconnecting.Preferably, described system has been installed smoke alarm unit and/or high-temperature alarming device, thereby realize, reports to the police when there is smog or high temperature in cabinet.Preferably, the external power on-position of described system is parallel with lightning arrester, thereby realizes the effect of overvoltage protection.
According to the preferred embodiment of the present invention, storage unit can also be set, it stores at least one base regime data that identified by base regime sequence number, and described base regime data comprise base regime setup parameter.Preferably, at least one composite condition data that identified by composite condition sequence number of floor data cell stores, described composite condition packet contains at least one in following content: base regime sequence number, base regime setup parameter, combination order or base regime multiplicity.Storage unit is such as volatibility and nonvolatile memory.Wherein volatile memory is for example random-access memory (ram), and nonvolatile memory is for example ROM (read-only memory) (ROM).
Fig. 4 shows the process flow diagram that discharges and recharges working condition simulation method 400 according to the electric vehicle dynamic cell of embodiment of the present invention.As shown in Figure 4, described method 400 starts at step 401 place, and then proceeds to step 402.In step 402, read the operating mode setup parameter of charging and/or electric discharge.Operating mode setup parameter is now initial operating mode setup parameter or initial setting parameter.Preferably, can be the first stage of Work condition analogue herein, after the first stage completes, if also have other stage, can obtain the operating mode setup parameter relevant to next charging and/or discharge regime, and repeat.Then, proceed to step 403, Work condition analogue instruction generation unit generates the command value of the charging of current time and/or the voltage of electric discharge, electric current or power according to operating mode setup parameter.Preferably, operating mode setup parameter now can be initial operating mode setup parameter as above or initial setting parameter, the operating mode setup parameter relevant to next charging and/or discharge regime that step 407 place of introducing after can being also obtains.Then, method 400 enters step 404, and control module is controlled charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the command value of the voltage of the charging of current time and/or electric discharge, electric current or power.Method 400 enters step 405, determines whether to reach the termination condition of operating mode, if reached, current charging and/or discharge regime complete, and method 400 enters step 406, otherwise returns to step 404.Then, method 400 enters step 406, has determined whether all operating modes, if do not completed, obtains next operating mode setup parameter.If do not completed, i.e. this simulation also has next charging and/or discharge regime, and method 400 enters step 407, obtains the operating mode setup parameter relevant to next charging and/or discharge regime, and then gets back to step 403.If completed whole chargings and/or discharge regime, proceed to step 408, method 400 finishes.
The electric vehicle dynamic cell that Fig. 5 shows another embodiment of the present invention discharges and recharges the process flow diagram of working condition simulation method 500.As shown in Figure 5, described method 500 starts at step 501 place, and then proceeds to step 502.In step 502, read the operating mode setup parameter relevant to charging and/or discharge regime.Operating mode setup parameter is now initial operating mode setup parameter or initial setting parameter.Preferably, can be the first stage of Work condition analogue herein, after the first stage completes, if also have other stage, can obtain the Work condition analogue setting value relevant to next charging and/or discharge regime, and repeat.Then, proceed to step 503, Work condition analogue instruction generation unit generates the initial order value of voltage, electric current or the power of charging and/or electric discharge according to operating mode setup parameter.Preferably, operating mode setup parameter now can be initial operating mode setup parameter as above or initial setting parameter, the operating mode setup parameter relevant to next charging and/or discharge regime that step 510 place of introducing after can being also obtains.Then method 500 proceeds to step 504: control module is controlled charge/discharge unit according to described initial order value and electrokinetic cell carried out to charging and/or the electric discharge trial run of a period of time; Step 505: detecting unit detects the actual operation parameters of electrokinetic cell between trial run period, and described actual operation parameters is sent to Work condition analogue instruction generation unit; Step 506: Work condition analogue instruction generation unit generates Work condition analogue modified value according to described initial order value and actual operation parameters, step 507, control module is controlled charge/discharge unit according to described Work condition analogue modified value and electrokinetic cell is charged and/or discharge; Step 508: determine whether to reach the termination condition of current charging and/or discharge regime, if reached, enter step 509, otherwise return to step 507; Step 509, has determined whether whole chargings and/or discharge regime, if do not completed, enters step 510, obtains the operating mode setup parameter relevant to next charging and/or discharge regime, gets back to step 503; If completed, proceed to step 511, method 400 finishes.
By reference to a small amount of embodiment, the present invention has mainly been described.Yet, known in those skilled in the art, as subsidiary Patent right requirement, limit, except above disclosed other the embodiment of the present invention falls within the scope of the invention equally.
Normally, all terms that use in the claims are all explained in the common implication of technical field according to them, unless defined clearly in addition therein.All references " one/described/should [device, assembly etc.] " are all interpreted as at least one example in described device, assembly etc. by open, unless clearly stated in addition.The step of any method disclosed herein all need not be with the operation of disclosed order accurately, unless clearly stated.
Claims (15)
1. electric vehicle discharges and recharges a Simulated System, and described Simulated System comprises:
Electrokinetic cell, for storing the needed electric power of electric vehicle, described electrokinetic cell is electrokinetic cell bag or part electrokinetic cell bag;
Charge/discharge unit, for charging to electrokinetic cell and/or discharging;
Watch-dog, for monitoring the charge or discharge state of electrokinetic cell, and controls for the charge or discharge process to electrokinetic cell, and described watch-dog also comprises: detecting unit, control module and Work condition analogue instruction generation unit, wherein
Work condition analogue instruction generation unit, according to the command value of the generation charging of current time of operating mode setup parameter and/or the voltage of electric discharge, electric current or power;
Control module, controls charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the command value of the voltage of the charging of current time and/or electric discharge, electric current or power; And
Detecting unit, detects the actual operation parameters in power battery charging and/or discharge process.
2. Simulated System according to claim 1, wherein said charge/discharge unit comprises: at least one AC/DC Bidirectional variable-flow module, and the two-way copped wave module of at least one DC/DC.
3. Simulated System according to claim 2, the teleswitch that the two-way copped wave module series connection of wherein said at least one DC/DC is connected to hand switch and/or is controlled by described watch-dog.
4. Simulated System according to claim 2, wherein said at least one AC/DC Bidirectional variable-flow module is connected at least one capacitor with the points of common connection of the two-way copped wave module of at least one DC/DC.
5. Simulated System according to claim 2, wherein the two-way copped wave module of at least one DC/DC comprises at least two two-way copped wave modules of DC/DC, described watch-dog can be controlled described Simulated System and operate in following state: described at least one AC/DC Bidirectional variable-flow module is in not connecting the state of electrical network, and at least one operates in respectively charge or discharge state at least two two-way copped wave modules of DC/DC described in simultaneously; Or described at least one AC/DC Bidirectional variable-flow module is in maintaining state, at least one operates in respectively charge or discharge state at least two two-way copped wave modules of DC/DC described in simultaneously.
6. Simulated System according to claim 2, wherein said at least one AC/DC Bidirectional variable-flow module and the two-way copped wave module of at least one DC/DC are provided with output dc voltage sensor and output DC current sensor, and the actual operation parameters that wherein said detecting unit detects in power battery charging and/or discharge process is specially: utilize described output dc voltage sensor and/or output DC current sensor to detect the actual operation parameters in power battery charging and/or discharge process.
7. Simulated System according to claim 1, is characterized in that, described operating mode comprises base regime, and described base regime is at least one in following content:
Constant voltage charging, its duty parameter comprises charging voltage and cut-off condition;
Constant current charge, its duty parameter comprises charging current and cut-off condition;
Permanent power charging, its duty parameter comprises charge power and cut-off condition;
Constant voltage, continuous current, permanent power step charge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition;
According to voltage, electric current and/or powertrace charging, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition;
Constant voltage electric discharge, its duty parameter comprises sparking voltage and cut-off condition;
Constant current discharge, its duty parameter comprises discharge current and cut-off condition;
Permanent power discharge, its duty parameter comprises discharge power and cut-off condition;
Constant voltage, continuous current, permanent power segmentation electric discharge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition;
According to voltage, electric current and/or powertrace electric discharge, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition; And
Electrokinetic cell is standing, and its duty parameter comprises time of repose.
8. Simulated System according to claim 1, it is characterized in that, also be provided with device cabinet, the measuring instrument of electrokinetic cell DC voltage, electrokinetic cell DC current and/or charge/discharge unit alternating voltage is installed in described device cabinet, the measuring instrument of wherein said electrokinetic cell DC current has positive and negative range, the forward and the negative current that in the time of can monitoring charging and/or electric discharge, produce.
9. Simulated System according to claim 7, is characterized in that, described operating mode also comprises: the composite condition being formed according to combination order and/or multiplicity by base regime.
10. Simulated System according to claim 1, it is characterized in that, described Work condition analogue instruction generation unit is according to the command value computed correction of the voltage of the charging of described actual operation parameters and current time and/or electric discharge, electric current or power, to obtain the revision directive value of the charging of current time and/or the voltage of electric discharge, electric current or power; And control module, controls charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the revision directive value of the voltage of the charging of current time and/or electric discharge, electric current or power.
11. Simulated Systems according to claim 1, it is characterized in that described watch-dog also comprises floor data storage unit, it stores at least one base regime data that identified by base regime sequence number, and described base regime data comprise base regime setup parameter;
And/or, at least one composite condition data that identified by composite condition sequence number of floor data cell stores, described composite condition packet contains at least one in following content: base regime sequence number, base regime setup parameter, combination order or base regime multiplicity.
12. 1 kinds are utilized electric vehicle to discharge and recharge the method that Simulated System carries out Work condition analogue, and wherein said simulation system comprises: electrokinetic cell, and for storing the needed electric power of electric vehicle, described electrokinetic cell is electrokinetic cell bag or part electrokinetic cell bag; Charge/discharge unit, for charging to electrokinetic cell and/or discharging; Watch-dog, for monitoring the charge or discharge state of electrokinetic cell, and control for the charge or discharge process to electrokinetic cell, described watch-dog also comprises: control module and Work condition analogue instruction generation unit, it is characterized in that, described method comprises:
Step 1: the operating mode setup parameter that reads charging and/or electric discharge;
Step 2: Work condition analogue instruction generation unit generates the command value of the charging of current time and/or the voltage of electric discharge, electric current or power according to operating mode setup parameter;
Step 3: control module is controlled charge/discharge unit to the charging of electrokinetic cell and/or discharge process according to the command value of the voltage of the charging of current time and/or electric discharge, electric current or power;
Step 4: determine whether to reach the termination condition of operating mode, if reached, enter step 5, otherwise return to step 3;
Step 5: determined whether all operating modes, if do not completed, obtained next operating mode setup parameter, got back to step 2; If completed, finish.
13. working condition simulation methods according to claim 12, is characterized in that, described operating mode comprises base regime, and described base regime is at least one in following content:
Constant voltage charging, its duty parameter comprises charging voltage and cut-off condition;
Constant current charge, its duty parameter comprises charging current and cut-off condition;
Permanent power charging, its duty parameter comprises charge power and cut-off condition;
Constant voltage, continuous current, permanent power step charge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition;
According to voltage, electric current and/or powertrace charging, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition;
Constant voltage electric discharge, its duty parameter comprises sparking voltage and cut-off condition;
Constant current discharge, its duty parameter comprises discharge current and cut-off condition;
Permanent power discharge, its duty parameter comprises discharge power and cut-off condition;
Constant voltage, continuous current, permanent power segmentation electric discharge, its duty parameter comprises voltage, electric current, the power parameter of segmentation, switch condition and cut-off condition;
According to voltage, electric current and/or powertrace electric discharge, its duty parameter comprises charging voltage, electric current and/or powertrace and cut-off condition; And
Electrokinetic cell is standing, and its duty parameter comprises time of repose.
14. working condition simulation methods according to claim 13, are further characterized in that, described operating mode also comprises: the composite condition being formed according to combination order and/or multiplicity by base regime.
15. working condition simulation methods according to claim 12, it is characterized in that described watch-dog also comprises floor data storage unit, it stores at least one base regime data that identified by base regime sequence number, and described base regime data comprise base regime setup parameter;
And/or, at least one composite condition data that identified by composite condition sequence number of floor data cell stores, described composite condition packet contains at least one in following content: base regime sequence number, base regime setup parameter, combination order or base regime multiplicity.
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