CN205168220U - Composite energy accumulator and electric automobile - Google Patents
Composite energy accumulator and electric automobile Download PDFInfo
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- CN205168220U CN205168220U CN201520861573.3U CN201520861573U CN205168220U CN 205168220 U CN205168220 U CN 205168220U CN 201520861573 U CN201520861573 U CN 201520861573U CN 205168220 U CN205168220 U CN 205168220U
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- energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model provides a composite energy accumulator possesses a plurality of one -level direct current electrical storage devices and a plurality of second grade direct current electrical storage device, a plurality of second grade direct current electrical storage devices are parallelly connected, the back is connected with the DC -DC converter of the same quantity to a plurality of one -level direct current electrical storage devices, is connected with one of them second grade direct current electrical storage device, still further provides the electric automobile energy management method, utilizes above -mentioned composite energy accumulator, disposes an energy supply chain and the 2nd energy supply chain, and it is more nimble to make vehicle energy supply device use, reduces the failure risk of vehicle energy supply parts, the various consumers that need low pressure large current output of specially adapted.
Description
Technical field
The utility model relates to a kind of energy storage device, particularly, relates to a kind of compound energy holder being particularly suitable for elec. vehicle.
Background technology
In electronlmobil, modal composite power source is that ultracapacitor and storage battery are bonded hybrid power system, can improve the ability of high-power output in short-term of power-supply system, also possesses lasting tractive performance simultaneously.By the combination of ultracapacitor and battery, give full play to the advantage of the high power density of ultracapacitor and the high-energy-density of battery, met that hybrid vehicle accelerates in climbing, provide powerful power in start-up course.At present, be limited to the development technique of storage battery, also do not have to be applied to the collection high-energy of electronlmobil and the storage battery of VHO Very High Output, general way is the composite power source of super capacitor and the storage battery used, in order to coordinate the demand of vehicle, there is provided high-power output in short-term, super capacitor requires to provide High-current output in short-term.But the configuration mode of super capacitor and storage battery is very single at present, and the two carries out Energy transmission and exchange by dc-dc, and then outputs to load motor end.Such mode makes energy flow direction solely from storage battery to super capacitor, or is recycled to super capacitor from load motor, requires that storage battery and super capacitor meet the coupling of voltage and power grade.And, in the occasion that demand fulfillment low-voltage, high-current exports, high-capacity ultracapacitor means needs coupling high power D C-DC conv, and pre-charge circuit is coupled to described ultracapacitor, and described pre-charge circuit is configured to charge to described ultracapacitor and filter capacitor.Dc-dc is widely used possessing in power supply system of DC source.Dc-dc is applied to high-power Power convert more and more in recent years, as the industry such as new-energy automobile, wind-power electricity generation.These industries pursue high-performance while, also at the volume of reduction equipment of constantly trying every possible means, to exchange the performance of more high-quality for.Nearly multi-source of commercially occurring for 2 years drives advanced person's representative of new-energy automobile this technology just.High-power bidirectional DC-DC changer has broad application prospects in fields such as electronlmobil, closed-centre system, quality of power supply adjustment, renewable energy power generation and superconductive energy storage systems.
Utility model content
In order to solve in prior art composite power source, DC/DC conv volume is excessive, high cost, energy conversion efficiency are low, the dangerous problem such as greatly of potential fault, the utility model provides a kind of composite power source, and then provide a kind of energy management method of electronlmobil, be applicable to electronlmobil field, be specially adapted to the various consumer needing low-voltage, high-current to export.The high density energy is split into less energy bins by the utility model hybrid power system, hazard rating during energy resource system fault can be reduced, simultaneously, by using multiple dc-dc, the operating voltage of dc-dc is reduced, improve dc-dc frequency of operation, and then improve dc-dc work efficiency, ensure payload security smooth operation.Concrete scheme is as follows:
A kind of energy composite energy holder, possess multiple one-level direct current electrical storage device and multiple secondary direct current electrical storage device, it is characterized in that, described multiple secondary direct current electrical storage device is in parallel, after described multiple one-level direct current electrical storage device is connected with the dc-dc of equal number, be connected with one of them secondary direct current electrical storage device.
As a kind of embodiment, described dc-dc comprises at least 1 binistor and at least 1 coil device.If likely, dc-dc can use the minimum unit that can use, its binistor can be various high-frequency small power as binistors such as transistors.
In the utility model, one-level direct current electrical storage device can be energy type electrical storage device, secondary direct current electrical storage device can be power-type electrical storage device, and, described one-level direct current electrical storage device gross output power is less than described secondary direct current electrical storage device gross output power, and the total electricity of described one-level direct current electrical storage device is greater than the total electricity of described secondary direct current electrical storage device.
A wherein mode, described dc-dc is one-way type dc-dc.Also can be two-way type dc-dc.
Further, a described dc-dc wherein part is boosting type converter, and another part is buck converter, can be also all voltage-dropping type or boosting type converter.On the other hand, whole dc-dc may be all buck-boost type conv.
According to above-mentioned any point, described one-level direct current electrical storage device is electrokinetic cell, and described secondary direct current electrical storage device is super capacitor.
A kind of electronlmobil, comprise electrical motor, for driving described automobile, the super capacitor of at least two group parallel connections, is connected to described electrical motor; At least two group storage batteries, are connected to described super capacitor by dc-dc; Entire car controller and energy management device, and be arranged at the monitoring device of storage battery and super capacitor, described energy management device is connected with described dc-dc, and described monitoring device communicates with described entire car controller, and described entire car controller communicates with described energy management device.On the other hand, can charging inlet be provided with, connect described super capacitor and external electrical network, for charging to super capacitor.
The utility model embodies following beneficial effect:
1. the macro-energy density module be applied on vehicle is split into little density energy unit, add the safety of vehicle, especially large battery pack is divided into baby battery and independence, the fault of single battery can not affect the supply of car load energy, and vehicle reliability is strengthened;
2. dc-dc part is divided into junior unit DC-DC, reduces DC-DC module power grade and volume, the risk lost efficacy of generating heat in a large number when reducing the operation of high power D C-DC conv, improves the reliability of Vehicular system;
3., for the parallel configuration of super capacitor, excellent low-voltage, high-current electric energy can not only be provided, and the open fault of single capacitor cell can not produce devastating impact to system, ensures system safety further.
Accompanying drawing explanation
Fig. 1 is the energy composite energy reservoir configuration schematic diagram that the utility model relates to;
Fig. 2 is the utility model wherein embodiment connection diagram;
Detailed description of the invention
Below, the accompanying drawing with reference to the part forming this specification sheets illustrates in greater detail embodiment of the present utility model.In all of the figs same reference marker added to same or similar part and omit the description.Following examples are applied to electronlmobil for the utility model composite power source respectively, do not represent application of the present utility model and are only limitted to electronlmobil field, and any application of every use the utility model principle all falls in the utility model field of application.To the description of direct current electrical storage device in this specification sheets, wherein " one " direct current electrical storage device represents that having a positive terminal draws lead-in wire with the single direct current electrical storage device being connected other device beyond " one " direct current electrical storage device with a negative terminal.For storage battery, be somebody's turn to do multiple battery units that can not be split that " " direct current electrical storage device (storage battery) may comprise more than 1 or 1; And ultracapacitor represents the cond comprising the multiple capacitor units intercoupled, wherein capacitor unit can have the electric capacity being greater than 500 farads separately.Term as used herein " storage battery " describes and can realize about 100W-hr/kg or more the high-energy-density storage battery of macro-energy density or high-energy-density storage battery (such as lithium ion, sodium metal halide, sodium-nickel chloride, sodium sulphur or zinc air battery).
With reference to the energy composite energy holder of figure 1, possess multiple one-level direct current electrical storage device and multiple secondary direct current electrical storage device, wherein multiple secondary direct current electrical storage device is in parallel, after multiple one-level direct current electrical storage device is connected with the dc-dc of equal number, is connected with one of them secondary direct current electrical storage device.
According to the purpose of this utility model, above-mentioned secondary direct current electrical storage device is most possibly configured to the electric storage device of power-type, such as ultracapacitor, fully can reclaim the energy that load produces during braking; And above-mentioned one-level direct current electrical storage device is most possibly configured to energy type electric storage device, such as electrokinetic cell/accumulator plant, can secondary direct current electrical storage device electricity low be not enough to maintain during loaded work piece power to secondary direct current electrical storage device.So under above-mentioned situation is guided, preferred mode is that above-mentioned one-level direct current electrical storage device gross output power is generally less than above-mentioned secondary direct current electrical storage device gross output power, and the total electricity of above-mentioned one-level direct current electrical storage device is greater than the total electricity of above-mentioned secondary direct current electrical storage device.
Based on such scheme of the present utility model, the utility model and then provide a kind of electric automobile energy management process, comprising: be connected to motor of vehicle by after super capacitor parallel connection, forms the first energy supply chain; By multiple dc-dc, equivalent amount storage battery is connected with wherein one group of super capacitor, forms the second energy supply chain.This configuration mode, when super capacitor electricity SOC is enough, uses the first energy supply chain, for motor of vehicle provides electric energy, for driving vehicle; When super capacitor electricity SOC is not enough, use the second energy supply chain, by storage battery by dc-dc to super capacitor transfer electrical energy, then be supplied to motor of vehicle by super capacitor, drive vehicle.On the contrary, when car brakeing, braking energy is reclaimed by electrical motor, first super capacitor is recycled to by the first energy supply chain, after super capacitor electricity SOC is full, utilize the second energy supply chain, braking energy is recycled to storage battery by dc-dc, recuperated energy to greatest extent, to improve the utilization ratio of vehicle energy.
Detailed content of the present utility model is explained further below by Fig. 2.In Fig. 2, connection lead represents electrical connection or communication connection, for the energy composite energy holder being applied to vehicle, in the utility model, dc-dc may be Uniderectional DC-DC conv, bi-directional DC-DC converter, booster type dc-dc material, buck mode DC-DC converter, buck-boost type dc-dc, according to the specification different actual conditions of selected one-level direct current electrical storage device with secondary direct current electrical storage device, when relating to multiple DC-DC, may all use same type dc-dc, also may above-mentioned dissimilar dc-dc use with.
Below for the dc-dc of two types, explain the utility model further.When dc-dc is Uniderectional DC-DC conv, a binistor and at least one coil device should be comprised, multiple binistor and multiple coil device can certainly be comprised, the formation electric appliance unit of dc-dc can be selected according to actual service condition.For Uniderectional DC-DC conv, electric energy can only transmit from one-level direct current electrical storage device to secondary direct current electrical storage device.In this embodiment, one-level direct current electrical storage device is set to storage battery, and secondary direct current electrical storage device is set to super capacitor.Specifically, the energy composite energy holder in the present embodiment is made up of multiple storage battery and multiple super capacitor, and alleged storage battery can be battery unit here, also can be the series connection of multiple battery cell or battery pack that is in parallel or series-parallel connection composition; Super capacitor can be single supercapacitive cell, also can in parallel or series connection or series-parallel connection form by multiple supercapacitive cell super capacitor group.Multiple super capacitor parallel connection forms super capacitor group, and rear connection, for driving the electrical motor of vehicle, is connected with super capacitor group after multiple storage battery is connected one to one with Uniderectional DC-DC conv.Also be provided with energy management device in this hybrid power system, be connected with each dc-dc, control the break-make of dc-dc breaker in middle.In the present embodiment, each storage battery is independent mutually, and do not need to carry out special specification coupling, even wherein part storage battery occurs that fault cannot work, and other storage battery can continue to provide energy insusceptibly; Same, each dc-dc can work independently of one another, does not need to carry out synchro control or power match, reduces the complexity of Systematical control, makes this energy storage device safer.Super capacitor group in parallel can provide High-current output, meets very much high load capacity vehicle high-power output demand in short-term.In addition, above-mentioned each electrokinetic cell and each super capacitor are respectively arranged with monitoring device, monitoring device can monitor the voltage, electric current, electricity, temperature etc. of battery and electric capacity respectively.Above-mentioned monitoring device and energy management device or entire car controller are communicated by CAN and are connected, or control turning on and off of dc-dc according to real needs after energy management device obtains above information from entire car controller, electric energy shifts from electrokinetic cell to super capacitor, finally exports.
Energy composite energy memory applications, when electronlmobil, can carry out energy allotment as follows:
Vehicle launch: entire car controller receives vehicle launch signal, first by the first energy supply chain supply electric energy, discharged by super capacitor and provide direct motor drive energy, now dc-dc turns off.If super capacitor electricity is not enough, then enables the second energy supply chain, provide electric energy by electrokinetic cell, drive vehicle launch.Be specially, detect super capacitor or electrokinetic cell charge condition, if electricity meets entry condition, send startup command by entire car controller to energy management device.If used for the second energy generation answered chain, energy management device controls dc-dc and is powered to super capacitor by electrokinetic cell, exports electric energy by electrokinetic cell to super capacitor, and super capacitor is powered to vehicle driving motor, to drive vehicle launch simultaneously.Wherein, electrokinetic cell is in super capacitor power supply process, and uninterrupted monitoring super capacitor electricity, if super capacitor electricity exceedes the electricity upper limit Qm of setting, controls dc-dc by energy management device and turn off, stop powering to super capacitor; On the contrary, if super capacitor electricity is lower than the electricity lower limit Qm arranged, controls dc-dc by energy management device and open, continue to power to super capacitor.
Vehicle travels: in vehicle travel process, and energy management device controls dc-dc from electrokinetic cell to super capacitor transmission of electric energy, then is powered to driving motor by super capacitor, drives vehicle to travel.Therebetween, electrokinetic cell can adopt discontinuous power supply mode, monitors super capacitor electricity Q and electric current I, if electricity Q exceedes the electricity upper limit Qmax of setting by the monitoring device be arranged on super capacitor, turn off the dc-dc that electrokinetic cell connects in super capacitor, stop electric energy exporting; If electricity Q lower than arrange electricity lower limit Qmin or electric current I higher than setting upper limit Imax, continue export electric energy by electrokinetic cell to super capacitor.This power supply mode mainly causes damage to protect super capacitor to be unlikely to be overcharged or crossing to put.Specifically, when super capacitor electricity meets or exceeds upper limit Qmax, can think that continuing charging again can make super capacitor overcharge to cause super capacitor to damage, now should disconnect the connection of super capacitor and electrokinetic cell; When super capacitor electricity Q is lower than the electricity lower limit Qmin arranged, lasting electric discharge can cause super capacitor to cross to put, now should connect electrokinetic cell, to super capacitor charging to keep stable for electromigration; Or, when super capacitor outgoing current I is higher than the upper limit Imax of setting, can think that now vehicle needs lasting high-power output electric energy, electrokinetic cell should be kept to continue supply electric energy, to ensure normal vehicle operation.The opening to turn off of the detection of above electricity and dc-dc can adopt the mode known by the art personnel to realize, and repeats no more.
Energy regenerating: for electronlmobil, Brake energy recovery is indispensable part during its Conversion of Energy utilizes.Adopt composite power source of the present utility model, pass through driving motor recuperated energy during brake to super capacitor, monitor level electric capacity electricity Q by super capacitor monitoring device, if reach electricity Q to reach upper limit Qmax, stop energy regenerating to protect super capacitor.
When dc-dc is bi-directional DC-DC converter, its energy regenerating mode is slightly different from Uniderectional DC-DC conv.For electronlmobil, Brake energy recovery is indispensable part during its Conversion of Energy utilizes.Adopt energy composite energy holder of the present utility model, driving motor recuperated energy is passed through to super capacitor during brake, level electric capacity electricity Q is monitored by super capacitor monitoring device, if reach electricity Q to reach upper limit Qmax, energy management device controls dc-dc and connects, braking energy is recycled to electrokinetic cell by super capacitor, increases organic efficiency.
More than describe the detailed description of the invention of technical solutions of the utility model in detail, in order to the utility model is implemented better, in above embodiment, dc-dc binistor can be the high frequency switching device such as MOSFET or carborundum, and dc-dc is had, and response is fast, the feature of support high frequency.
Claims (9)
1. an energy composite energy holder, possess multiple one-level direct current electrical storage device and multiple secondary direct current electrical storage device, it is characterized in that, described multiple secondary direct current electrical storage device is in parallel, after described multiple one-level direct current electrical storage device is connected with the dc-dc of equal number, be connected with one of them secondary direct current electrical storage device.
2. energy composite energy holder according to claim 1, it is characterized in that, described one-level direct current electrical storage device gross output power is less than described secondary direct current electrical storage device gross output power, and the total electricity of described one-level direct current electrical storage device is greater than the total electricity of described secondary direct current electrical storage device.
3. energy composite energy holder according to claim 1, is characterized in that, described dc-dc is two-way type dc-dc.
4. energy composite energy holder according to claim 1, is characterized in that, a described dc-dc wherein part is boosting type converter, and another part is buck converter.
5. energy composite energy holder according to claim 1, is characterized in that, described dc-dc is all voltage-dropping type or boosting type converter.
6. energy composite energy holder according to claim 1, is characterized in that, described dc-dc is all buck-boost type conv.
7. the energy composite energy holder according to claim 1-6 any one, is characterized in that, described one-level direct current electrical storage device is electrokinetic cell, and described secondary direct current electrical storage device is super capacitor.
8. an electronlmobil, comprises electrical motor, and for driving described automobile, the super capacitor of at least two group parallel connections, is connected to described electrical motor; At least two group storage batteries, are connected to described super capacitor by dc-dc; Entire car controller and energy management device, and be arranged at the monitoring device of storage battery and super capacitor, described energy management device is connected with described dc-dc, and described monitoring device communicates with described entire car controller, and described entire car controller communicates with described energy management device.
9. electronlmobil according to claim 8, is characterized in that, storage battery is provided with chargeable interface, for connecting external electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861573.3U CN205168220U (en) | 2015-10-29 | 2015-10-29 | Composite energy accumulator and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861573.3U CN205168220U (en) | 2015-10-29 | 2015-10-29 | Composite energy accumulator and electric automobile |
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| Publication Number | Publication Date |
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| CN205168220U true CN205168220U (en) | 2016-04-20 |
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| CN201520861573.3U Expired - Fee Related CN205168220U (en) | 2015-10-29 | 2015-10-29 | Composite energy accumulator and electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112677779A (en) * | 2020-12-24 | 2021-04-20 | 北京理工大学 | Information physical fusion system for hybrid energy storage |
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2015
- 2015-10-29 CN CN201520861573.3U patent/CN205168220U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112677779A (en) * | 2020-12-24 | 2021-04-20 | 北京理工大学 | Information physical fusion system for hybrid energy storage |
| CN112677779B (en) * | 2020-12-24 | 2022-02-22 | 北京理工大学 | Information physical fusion system for hybrid energy storage |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20181029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |