CN104242396A - Electromobile optimized energy source system with balancing function - Google Patents
Electromobile optimized energy source system with balancing function Download PDFInfo
- Publication number
- CN104242396A CN104242396A CN201410497793.2A CN201410497793A CN104242396A CN 104242396 A CN104242396 A CN 104242396A CN 201410497793 A CN201410497793 A CN 201410497793A CN 104242396 A CN104242396 A CN 104242396A
- Authority
- CN
- China
- Prior art keywords
- voltage
- battery module
- energy resource
- transformer
- resource system
- 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.)
- Pending
Links
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides an electromobile optimized energy source system with a balancing function. The electromobile optimized energy source system is provided with a flyback-type transformer, and a power battery system is divided into a plurality of battery modules equal in nominal voltage; when voltage of a certain battery module is higher than average voltage of all battery modules, energy of the battery module is transmitted to a primary coil through a secondary coil, and the transformer stores the energy and converts voltage into 9-16V by reasonably designing number of coil turns to power low-voltage appliances. A switch connecting a high-voltage module with the secondary coil is switched off, switches of voltage lower than the average voltage of the battery modules are switched off, and the transformer charges a low-voltage module. Balance of batteries is realized through conversion between a magnetic field and an electric field, and DC/DC and a low-voltage energy source system are omitted.
Description
Technical field
The invention belongs to electric automobile energy system regions, relate to a kind of electric automobile and optimize energy resource system, especially this system possesses battery balanced function simultaneously.
Background technology
Electric automobile, as a kind of vehicles of new green environment protection, serves important function for minimizing environmental pollution.But because power battery technology is still immature at present, the problems such as the continual mileage caused thus is short have impact on the development of electric automobile to a certain extent.
Optimize the energy resource system of electric automobile, promote the performance of electrokinetic cell system for extending driving range, the fail safe, the reliability that promote electric automobile play an important role.Current optimization energy resource system is mainly concentrated both ways, and one is adopt equalization function that the performance of battery is given full play to, and two is optimize existing energy resource system, and parts take into account multiple function, save some parts.
For battery balanced function, a lot of company and scientific research institutions have carried out related work.Patent of invention N102480141A discloses a kind of battery balanced device and method, between the battery of different voltage, carry out energy trasfer to realize the electric quantity balancing between each battery, this battery balanced device comprises in order to the monitoring module of monitoring battery, the electromagnetic coupled transformer connecting this power brick and switch module and triggers this electromagnetic coupled transformer to produce electromagnetic coupling effect and carry out balanced main control module to those batteries.This equalization function adds the useful life of battery.Patent of invention CN103606999A discloses a kind of novel battery balanced charging method, each battery cell balanced unit all in parallel of this device, in charging process, monomer battery voltage is less than to the cell of average monomer voltage, corresponding balanced unit work, to each corresponding monomer boost charge; Monomer battery voltage is greater than to the cell of average monomer voltage, is still charged by charger; Along with the carrying out of boost charge, each monomer voltage is more and more close, until last balanced unit boost charge completes; The output voltage of each balanced unit is completely equal, and in whole charging process, accurately can carry out balanced boost charge, portfolio effect is better.
For the existing energy resource system of optimization, patent of invention CN101811437B discloses a kind of optimizing structure and the pure electric automobile of layout, eliminates the trouble that general electric automobile needs to arrange multiple drive motors.Simplify the structure of electric automobile on the one hand, reduce cost, further mitigate the weight of electric automobile, enhance the lightweight of automobile, on the other hand, enhance the damping performance of drive motors, improve reliability, be more conducive to the performance improving electric automobile.
Both are not combined by above energy resource system or only possess equalization function, or the optimization just to energy resource system structure.The optimization of energy resource system and battery balanced function are achieved by the present invention in same set of energy resource system, play an important role for raising car load continual mileage and fail safe.
Summary of the invention
The object of this invention is to provide a kind of electric automobile with equalization function and optimize energy resource system.
Technology contents of the present invention is:
The described electric automobile with equalization function is optimized energy resource system and is comprised electrokinetic cell system and a flyback transformer.
Electrokinetic cell system is divided into the equal battery module of several nominal voltages.
The battery module quantity that electrokinetic cell system divides is 10-25 block.
The nominal voltage scope of each battery module divided is 3-24V.
The each secondary coil of flyback transformer is in parallel with a battery module after division, and by switch control rule, and the number of turn of all secondary coils is identical.
The output voltage of transformer is adjusted to 9-16V by the turn ratio of flyback transformer primary coil and secondary coil.
When the voltage of a certain battery module is higher than battery module average voltage, the switch between this module and secondary coil closes, and the energy transferring of this module is to transformer, and now transformer energy storage is also exported to low power used system and powered; When the voltage of a certain battery module is lower than battery module average voltage, disconnect the switch of high-voltage battery module, the switch that closed low-voltage battery module is connected with secondary coil, now transformer charges to low-voltage battery module; The optimization of energy resource system of above process implementation, eliminates DC/DC and low-voltage energy source system, simultaneously by the conversion in electric field and magnetic field, achieves battery balanced.
The positive electrode of this electrokinetic cell system is ternary material or lithium manganate material.
Energy resource system optimized by the electric automobile with equalization function provided by the invention, and structure is simple, with low cost, installs and easy to use, both can save DC/DC and low-voltage energy source system, and can carry out equilibrium again to battery.Transformer is powered to car load low power used system as low-voltage energy source system simultaneously.DC/DC and low-voltage energy source system save and the realization of battery balanced function has significant for raising car load continual mileage.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electric automobile optimization energy resource system with equalization function.
Embodiment
See Fig. 1, the electric automobile with equalization function provided by the invention is optimized energy resource system and is comprised electrokinetic cell system and a flyback transformer.Electrokinetic cell system is divided into the equal battery module of several nominal voltages, and for power battery of pure electric automobile system, the battery module quantity of division can be 10-25 block, and the nominal voltage scope of each battery module of division is 3-24V.The positive electrode of electrokinetic cell system is ternary material or lithium manganate material.Each secondary coil of flyback transformer is in parallel with a battery module, and by switch control rule, and the number of turn of all secondary coils is all identical.The present invention, by the primary coil of appropriate design flyback transformer and the turn ratio of secondary coil, can make transformer output voltage in the scope of 9-16V.When the voltage of a certain battery module is higher than module average voltage, the switch between this module and secondary coil closes, and to transformer energy storage, voltage transitions becomes 9-16V, powers to low power used system.When the voltage of a certain battery module is lower than module average voltage, disconnect the switch of high-voltage module, the switch that closed low-voltage module is connected with secondary coil, now transformer charges to low-voltage module.The optimization of energy resource system of above process implementation, eliminates DC/DC and low-voltage energy source system.Simultaneously by the conversion in electric field and magnetic field, achieve battery balanced.
The present invention is illustrated below with embodiment:
Electrokinetic cell system total voltage is 333V, and positive electrode is ternary material.This electrokinetic cell system is divided into 15 battery modules, the nominal voltage of each module is 22.2V.
This electrokinetic cell system is equipped with a flyback transformer device, and the number of turn of each secondary coil of this device is identical.
If find the average voltage of voltage higher than all battery modules of first battery module, Closing Switch S1, now electric current flows to transformer from battery, transformer energy storage, converts the low tension of 9-16V simultaneously to, powers to low-voltage electrical appliance.
If find the average voltage of voltage lower than all battery modules of the 3rd battery module, cut-off switch S1, Closing Switch S3, now the energy trasfer of transformer is to the 3rd battery module, charges to this module.
Claims (8)
1. an energy resource system optimized by the electric automobile with equalization function, it is characterized in that:
The described electric automobile with equalization function is optimized energy resource system and is comprised electrokinetic cell system and a flyback transformer.
2. energy resource system according to claim 1, is characterized in that: electrokinetic cell system is divided into the equal battery module of several nominal voltages.
3. energy resource system according to claim 2, is characterized in that: the battery module quantity that electrokinetic cell system divides is 10-25 block.
4. the energy resource system according to Claims 2 or 3, is characterized in that: the nominal voltage scope of each battery module divided is 3-24V.
5. energy resource system according to claim 2, is characterized in that: each secondary coil of flyback transformer is in parallel with a battery module after division, and by switch control rule, and the number of turn of all secondary coils is identical.
6. energy resource system according to claim 5, is characterized in that: the output voltage of transformer is adjusted to 9-16V by the turn ratio of flyback transformer primary coil and secondary coil.
7. the energy resource system according to claim 1 or 6, it is characterized in that: when the voltage of a certain battery module is higher than battery module average voltage, switch between this module and secondary coil closes, the energy transferring of this module is to transformer, and now transformer energy storage is also exported to low power used system and powered; When the voltage of a certain battery module is lower than battery module average voltage, disconnect the switch of high-voltage battery module, the switch that closed low-voltage battery module is connected with secondary coil, now transformer charges to low-voltage battery module; The optimization of energy resource system of above process implementation, eliminates DC/DC and low-voltage energy source system, simultaneously by the conversion in electric field and magnetic field, achieves battery balanced.
8. energy resource system according to claim 1, is characterized in that: the positive electrode of this electrokinetic cell system is ternary material or lithium manganate material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410497793.2A CN104242396A (en) | 2014-09-25 | 2014-09-25 | Electromobile optimized energy source system with balancing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410497793.2A CN104242396A (en) | 2014-09-25 | 2014-09-25 | Electromobile optimized energy source system with balancing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242396A true CN104242396A (en) | 2014-12-24 |
Family
ID=52229975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410497793.2A Pending CN104242396A (en) | 2014-09-25 | 2014-09-25 | Electromobile optimized energy source system with balancing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104242396A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226775A (en) * | 2015-11-13 | 2016-01-06 | 中山大学 | The nondissipative equalization method of lithium ion battery of electric automobile group |
| WO2018121655A1 (en) * | 2016-12-30 | 2018-07-05 | 华为技术有限公司 | Energy balancing circuit and energy balancing apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074985A1 (en) * | 2000-10-19 | 2002-06-20 | Fujio Matsui | Voltage equalizer apparatus and method thereof |
| US20040217735A1 (en) * | 2001-05-08 | 2004-11-04 | Ehsan Chitsazan | Interleaved switching lead-acid battery equalizer |
| CN102035010A (en) * | 2009-09-29 | 2011-04-27 | 凹凸电子（武汉）有限公司 | Battery unit equalizing circuit and method |
| CN103199589A (en) * | 2013-04-12 | 2013-07-10 | 哈尔滨工业大学 | Lithium ion battery pack modularization fast equalization circuit and equalizing method |
| CN103606999A (en) * | 2013-11-04 | 2014-02-26 | 江苏嘉钰新能源技术有限公司 | Novel cell equalization charging method |
-
2014
- 2014-09-25 CN CN201410497793.2A patent/CN104242396A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074985A1 (en) * | 2000-10-19 | 2002-06-20 | Fujio Matsui | Voltage equalizer apparatus and method thereof |
| US20040217735A1 (en) * | 2001-05-08 | 2004-11-04 | Ehsan Chitsazan | Interleaved switching lead-acid battery equalizer |
| CN102035010A (en) * | 2009-09-29 | 2011-04-27 | 凹凸电子（武汉）有限公司 | Battery unit equalizing circuit and method |
| CN103199589A (en) * | 2013-04-12 | 2013-07-10 | 哈尔滨工业大学 | Lithium ion battery pack modularization fast equalization circuit and equalizing method |
| CN103606999A (en) * | 2013-11-04 | 2014-02-26 | 江苏嘉钰新能源技术有限公司 | Novel cell equalization charging method |
Non-Patent Citations (1)
| Title |
|---|
| 陈涛: ""电动汽车锂动力电池组均衡***"", 《全国优秀硕士学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226775A (en) * | 2015-11-13 | 2016-01-06 | 中山大学 | The nondissipative equalization method of lithium ion battery of electric automobile group |
| WO2018121655A1 (en) * | 2016-12-30 | 2018-07-05 | 华为技术有限公司 | Energy balancing circuit and energy balancing apparatus |
| CN108306397A (en) * | 2016-12-30 | 2018-07-20 | 华为技术有限公司 | A kind of energy balance circuit and balancing energy device |
| US10923922B2 (en) | 2016-12-30 | 2021-02-16 | Huawei Technologies Co., Ltd. | Energy balancing circuit and energy balancing apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104600799B (en) | A kind of series battery equalizing circuit and equalization methods | |
| CN103117577B (en) | Energy balance circuit for battery pack of electric vehicle | |
| CN102368628B (en) | Intelligent balance device of power batteries of electric vehicle | |
| CN106532852B (en) | Battery pack equalization circuit based on LC series energy storage | |
| CN103580252B (en) | A kind of electric automobile A-battery charging system and charging method thereof | |
| CN201478865U (en) | Improved charging balanced circuit | |
| CN107294174A (en) | Equalizing circuit structure and method between a kind of battery cell and battery pack | |
| CN102832653A (en) | Active equalization circuit for multi-monomer series battery | |
| CN103457325A (en) | Direct-type lithium ion battery lossless equilibration circuit and equilibration control method | |
| CN202231461U (en) | Charge-discharge balance control system for power battery pack | |
| CN105140998A (en) | Bidirectional lossless equalization circuit of series battery pack based on inductive energy storage | |
| CN103812153A (en) | Active balance type BMS control module and control method for new energy automobile | |
| CN202435080U (en) | Active equalization circuit of battery pack formed by connecting multiple single batteries in series | |
| CN104442437B (en) | A kind of electric automobile optimization energy resource system for having equalization function concurrently | |
| CN204271706U (en) | A kind of battery module voltages balancer based on AC bus | |
| CN205583754U (en) | Storage battery charge -discharge intelligence equalizing system based on divide into groups by turns | |
| CN104242396A (en) | Electromobile optimized energy source system with balancing function | |
| CN106877415A (en) | A kind of transmission line online monitoring system power supply | |
| CN103066642B (en) | Energy balance control system in a kind of battery pack between cell | |
| JP2020503834A (en) | Improved circuit for bidirectional lossless balancing of series battery packs based on inductive energy storage | |
| CN204947672U (en) | The two-way non-dissipative equalizing circuit of series battery based on inductive energy storage | |
| CN201752078U (en) | Charging tube management system of energy transfer way of multi lithium ion battery set | |
| CN204376462U (en) | The efficient equalizer topological circuit of a kind of double-deck brachium pontis series-connected batteries | |
| CN207967973U (en) | A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device | |
| CN103904720A (en) | Intelligent equalizing charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141224 |
|
| RJ01 | Rejection of invention patent application after publication |