CN105429471A - Electric car DC-DC converter with storage battery protection function - Google Patents
Electric car DC-DC converter with storage battery protection function Download PDFInfo
- Publication number
- CN105429471A CN105429471A CN201510973962.XA CN201510973962A CN105429471A CN 105429471 A CN105429471 A CN 105429471A CN 201510973962 A CN201510973962 A CN 201510973962A CN 105429471 A CN105429471 A CN 105429471A
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- CN
- China
- Prior art keywords
- circuit module
- module
- output system
- current output
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
Abstract
The invention discloses an electric car DC-DC converter with a storage battery protection function. The converter is characterized by comprising an EMI circuit module, an auxiliary power module, a high current output system used for supplying power to a load in an electric car, and a low current output system used for charging a storage battery, wherein the EMI circuit module is electrically connected with the auxiliary power module; the high current output system and the low current output system are respectively connected with the EMI circuit module electrically; a diode is connected in series between the high current output system and the low current output system. The converter has the advantages that since the high current output system used for supplying power to the load in the electric car and the low current output system used for charging the storage battery are arranged in the DC-DC converter, the DC-DC converter is capable of safely and reliably charging the storage battery when sever voltage loss of the storage battery occurs and the normal power supply to the load of the electric car is not affected, thus ensuring the service life of the storage battery.
Description
Technical field
The present invention relates to the charging system of storage battery in electric automobile, particularly relate to a kind of electric automobile dcdc converter with accumulator protecting function.
Background technology
Electric automobile is mainly powered to it by electrokinetic cell and storage battery, and the charging safety of current people to electric automobile is more the concern to power battery pack charging, but the storage battery of electric automobile also security incident can occur when charging.On-Board Vehicle DC/DC Converter due to current electric automobile is all that voltage stabilizing single channel exports, when discharged or defective battery serious (namely storage battery both end voltage is less than 8V), dcdc converter charges a battery electric current instantaneously can very greatly (exceeding its safe charging current range), this not only can useful life of serious curtailment storage battery, also may produce battery bulge and the security incident such as catch fire.
The measure of existing dcdc converter charge protection is the both end voltage detecting storage battery, and when finding that discharged or defective battery is serious, dcdc converter stops exporting, and dcdc converter could be used to it to charge after must safeguarding to storage battery.But the trouble of dismounting storage battery can be produced like this, and storage battery close to under-voltage protection point time, dcdc converter charge a battery moment output current still can be very large.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of maximum current limited charge in batteries, ensures charge in batteries safety, and does not affect the electric automobile dcdc converter with accumulator protecting function of other circuit.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of electric automobile dcdc converter with accumulator protecting function, comprise EMI circuit module, auxiliary power module, for giving the High-current output system of load supplying in electric automobile and the small area analysis output system for charging a battery, described EMI circuit module is electrically connected with described auxiliary power module, described High-current output system and described small area analysis output system are electrically connected with described EMI circuit module respectively, diode is serially connected with between described High-current output system and described small area analysis output system.
Described High-current output system comprises the first inverter circuit module, the first rectification circuit module and High-current output control module, described EMI circuit module, the first described rectification circuit module, described High-current output control module are electrically connected with the first described inverter circuit module respectively, described High-current output control module is electrically connected with described auxiliary power module, and the first described rectification circuit module is electrically connected with the load in electric automobile.
The first described inverter circuit module is the inverter circuit module using full-bridge resonance, the first described rectification circuit module adopts synchronous double current rectify mode, described High-current output control module is that the integrated chip of ISL6754 and peripheral circuit form by model, and this High-current output system is applicable to the higher High-current output mode of efficiency requirements.
Described small area analysis output system comprises the second inverter circuit module, the second rectification circuit module and small area analysis output control module, described EMI circuit module, the second described rectification circuit module, described small area analysis output control module are electrically connected with the second described inverter circuit module respectively, described small area analysis output control module is electrically connected with described auxiliary power module, and the second described rectification circuit module is connected with described storage battery.
The second described inverter circuit module is the inverter circuit module using half-bridge logical link control (LLC) resonant, the second described rectification circuit module adopts way of full-wave rectification, described small area analysis output control module is that the half-bridge LLC control chip of FAN7621 and peripheral circuit form by model, and this small area analysis output system structure is simple, efficiency is high and cheap.
The positive pole of described diode is electrically connected with the output cathode of the second rectification circuit module, and the negative pole of described diode is electrically connected with the output cathode of the first described rectification circuit module.
Fuse is serially connected with between the output negative pole of the first described rectification circuit module and the output negative pole of the second described rectification circuit module; When dcdc converter quits work, storage battery is by diode to the load supplying of electric automobile, and when storage battery output current is excessive, fuse can quick fuse, prevents storage battery output current excessive and damages storage battery.
Compared with prior art, advantage of the present invention is owing to being provided with for the High-current output system of load supplying in electric automobile and the small area analysis output system for charging a battery in dcdc converter, and High-current output system and small area analysis output system separate, therefore, this dcdc converter can at battery tension power shortage seriously and under not affecting the normal power supply to vehicle load, safe and reliable charging is carried out to storage battery, ensures the useful life of storage battery.
Accompanying drawing explanation
Fig. 1 is the circuit catenation principle block diagram of the embodiment of the present invention one;
Fig. 2 is the circuit catenation principle block diagram of the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one: as shown in the figure, a kind of electric automobile dcdc converter with accumulator protecting function, comprise EMI circuit module 1, auxiliary power module 2, diode 11, the High-current output system of powering for giving the load 3 in electric automobile and the small area analysis output system of charging for accumulators 4, EMI circuit module 1 is electrically connected with the electrokinetic cell 13 in electric automobile, EMI circuit module 1 is electrically connected with auxiliary power module 2, High-current output system comprises the first inverter circuit module 5 using full-bridge resonance, use the first rectification circuit module 6 and the High-current output control module 7 of synchronous double current rectify mode, High-current output control module 7 is that the integrated chip of ISL6754 and peripheral circuit form by model, EMI circuit module 1, first rectification circuit module 6, High-current output control module 7 is electrically connected with the first inverter circuit module 5 respectively, High-current output control module 7 is electrically connected with auxiliary power module 2, first rectification circuit module 6 is electrically connected with the load 3 in electric automobile, small area analysis output system comprises the second inverter circuit module 8 using half-bridge logical link control (LLC) resonant, use the second rectification circuit module 9 and the small area analysis output control module 10 of way of full-wave rectification, small area analysis output control module 10 is that the half-bridge LLC control chip of FAN7621 and peripheral circuit form by model, EMI circuit module 1, second rectification circuit module 9, small area analysis output control module 10 is electrically connected with the second inverter circuit module 8 respectively, small area analysis output control module 10 is electrically connected with auxiliary power module 2, second rectification circuit module 9 is electrically connected with storage battery 4, the positive pole of diode 11 is electrically connected with the output cathode of the second rectification circuit module 9, the negative pole of diode 11 is electrically connected with the output cathode of the first rectification circuit module 6.
Embodiment two: as shown in the figure, other structure is with embodiment one, and difference is to be serially connected with fuse 12 between the output negative pole of the first rectification circuit module 6 and the output negative pole of the second rectification circuit module 9.
In above-described embodiment two, the operation principle of this dcdc converter is: when dcdc converter works, the output voltage of High-current output system is identical with the output voltage of small area analysis output system and export simultaneously, diode 11 forward conduction oppositely end and conducting time need some pressure drops, second rectification circuit module output current accumulators 4 charges, and control the charging current to storage battery 4 by small area analysis output control module 10, to ensure the charging safety to storage battery 4, forward conduction due to diode 11 needs to there is pressure drop between the cathode voltage of the cathode voltage of diode 11 and diode 11, so small area analysis output system powers to load 3, High-current output control module 7 can control the supply current size to load 3 simultaneously, and powered to load 3 by the first rectification circuit module 6 output current, and due to the reverse cut-off characteristics of diode 11, so High-current output system can not be charged by accumulators 4, when dcdc converter quits work, storage battery 4 powers to load 3 by diode 11, owing to being serially connected with fuse 12 between the output negative pole of the first rectification circuit module 6 and the output negative pole of the second rectification circuit module 9, can quick fuse when storage battery 4 output current is excessive, prevent the output current of storage battery 4 excessive and volume damages storage battery 4.
Claims (7)
1. one kind has the electric automobile dcdc converter of accumulator protecting function; it is characterized in that comprising EMI circuit module, auxiliary power module, for the High-current output system of load supplying in electric automobile and the small area analysis output system for charging a battery; described EMI circuit module is electrically connected with described auxiliary power module; described High-current output system and described small area analysis output system are electrically connected with described EMI circuit module respectively, are serially connected with diode between described High-current output system and described small area analysis output system.
2. a kind of electric automobile dcdc converter with accumulator protecting function as claimed in claim 1, it is characterized in that described High-current output system comprises the first inverter circuit module, first rectification circuit module and High-current output control module, described EMI circuit module, the first described rectification circuit module, described High-current output control module is electrically connected with the first described inverter circuit module respectively, described High-current output control module is electrically connected with described auxiliary power module, the first described rectification circuit module is electrically connected with the load in electric automobile.
3. a kind of electric automobile dcdc converter with accumulator protecting function as claimed in claim 2; it is characterized in that the first described inverter circuit module is the inverter circuit module using full-bridge resonance; the first described rectification circuit module adopts synchronous double current rectify mode, and described High-current output control module is that the integrated chip of ISL6754 and peripheral circuit form by model.
4. a kind of electric automobile dcdc converter with accumulator protecting function as claimed in claim 2, it is characterized in that described small area analysis output system comprises the second inverter circuit module, second rectification circuit module and small area analysis output control module, described EMI circuit module, the second described rectification circuit module, described small area analysis output control module is electrically connected with the second described inverter circuit module respectively, described small area analysis output control module is electrically connected with described auxiliary power module, the second described rectification circuit module is connected with described storage battery.
5. a kind of electric automobile dcdc converter with accumulator protecting function as claimed in claim 4; it is characterized in that the second described inverter circuit module is the inverter circuit module using half-bridge logical link control (LLC) resonant; described second rectification circuit module adopts way of full-wave rectification, and described small area analysis output control module is that the half-bridge LLC control chip of FAN7621 and peripheral circuit form by model.
6. a kind of electric automobile dcdc converter with accumulator protecting function as claimed in claim 4; it is characterized in that the positive pole of described diode is electrically connected with the output cathode of the second rectification circuit module, the negative pole of described diode is electrically connected with the output cathode of the first described rectification circuit module.
7. a kind of electric automobile dcdc converter with accumulator protecting function as claimed in claim 4, is characterized in that being serially connected with fuse between the output negative pole of the first described rectification circuit module and the output negative pole of the second described rectification circuit module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510973962.XA CN105429471A (en) | 2015-12-22 | 2015-12-22 | Electric car DC-DC converter with storage battery protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510973962.XA CN105429471A (en) | 2015-12-22 | 2015-12-22 | Electric car DC-DC converter with storage battery protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105429471A true CN105429471A (en) | 2016-03-23 |
Family
ID=55507463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510973962.XA Pending CN105429471A (en) | 2015-12-22 | 2015-12-22 | Electric car DC-DC converter with storage battery protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105429471A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369461B1 (en) * | 2000-09-01 | 2002-04-09 | Abb Inc. | High efficiency power conditioner employing low voltage DC bus and buck and boost converters |
| CN2930061Y (en) * | 2006-07-20 | 2007-08-01 | 青岛经济技术开发区创统科技发展有限公司 | UPS for industrial driving |
| CN103187876A (en) * | 2011-12-28 | 2013-07-03 | 艾默生网络能源有限公司 | DC/DC circuit for UPS |
| CN204886384U (en) * | 2015-07-28 | 2015-12-16 | 北京京仪椿树整流器有限责任公司 | Integrative terminal of domestic photovoltaic power generation energy storage of miniwatt |
| CN205265530U (en) * | 2015-12-22 | 2016-05-25 | 浙江续航新能源科技有限公司 | Electric automobile DCDC converter with battery protect function |
-
2015
- 2015-12-22 CN CN201510973962.XA patent/CN105429471A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369461B1 (en) * | 2000-09-01 | 2002-04-09 | Abb Inc. | High efficiency power conditioner employing low voltage DC bus and buck and boost converters |
| CN2930061Y (en) * | 2006-07-20 | 2007-08-01 | 青岛经济技术开发区创统科技发展有限公司 | UPS for industrial driving |
| CN103187876A (en) * | 2011-12-28 | 2013-07-03 | 艾默生网络能源有限公司 | DC/DC circuit for UPS |
| CN204886384U (en) * | 2015-07-28 | 2015-12-16 | 北京京仪椿树整流器有限责任公司 | Integrative terminal of domestic photovoltaic power generation energy storage of miniwatt |
| CN205265530U (en) * | 2015-12-22 | 2016-05-25 | 浙江续航新能源科技有限公司 | Electric automobile DCDC converter with battery protect function |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |
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| WD01 | Invention patent application deemed withdrawn after publication |