CN205017062U - New energy automobile equalizing charge system - Google Patents
New energy automobile equalizing charge system Download PDFInfo
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- CN205017062U CN205017062U CN201520765140.8U CN201520765140U CN205017062U CN 205017062 U CN205017062 U CN 205017062U CN 201520765140 U CN201520765140 U CN 201520765140U CN 205017062 U CN205017062 U CN 205017062U
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Abstract
The utility model relates to a new energy automobile equalizing charge system takes the topological network of dc bus power supply, the topological network of dc bus power supply includes distribution device, charging station, two -way ACDC module and balanced distribution module, and distribution device carries out vary voltage and post -filter from the high voltage electric network access, divides two the way to insert successor nodes, inserts all the way balanced distribution module, a low -voltage power supply network is inserted on another way, low -voltage power supply network is connected through the cable with two -way ACDC module, balanced distribution module and two -way ACDC module are connected through the cable, the inside of balanced distribution module is equipped with the data acquisition unit, the CAN bus, battery BMS system and BMS intelligent analysis unit, the charging station includes two -way DCDC device and charges the machine, dc bus 5 is connected with the machine that charges through two -way DCDC device. The utility model discloses output current, voltage and the current power consumption that charges the machine of the supporting low -voltage distribution cabinet of ability real -time detection.
Description
Technical field
The utility model belongs to new-energy automobile and manufactures field, is specifically related to a kind of new-energy automobile equalizing charge system.
Background technology
Due to the restriction of new-energy automobile power battery energy and terminal voltage, new-energy automobile needs to adopt polylith battery to carry out series and parallel combination, and the nonlinearity of electrokinetic cell characteristic, make battery management system (BMS-BatteryManagementSystem) become the necessary devices of electric automobile.The most basic function of BMS is the operating state (voltage of battery, electric current and temperature) of monitoring battery, the battery capacity (SOC) of prediction electrokinetic cell and corresponding remaining driving mileage, carry out battery management avoiding occurring overdischarge, overcharge, the serious energy imbalance of voltage between overheated and cell, maximally utilise battery storage capacity and cycle life.
Specify in GB, during new-energy automobile charging, BMS system and charger realize interactive communication by CAN, and in charging process, the Data Dynamic adjustment charge parameter that charger provides according to BMS, performs corresponding actions and complete charging process.But in actual moving process, the charging process of charger also will be subject to the load restriction of affiliated power distribution cabinet, in charging process, if do not take balanced way to be limited, probably causes whole power distribution cabinet overload operation and then causes whole charging system to paralyse.
Summary of the invention
The utility model is in order to overcome prior art deficiency, propose a kind of new-energy automobile equalizing charge system, native system can detect the power consumption of the output current of supporting low-voltage distribution cabinet, voltage and current charger in real time, once detect that output current exceedes amount restriction, by internal balance strategy, system will notify that corresponding charger carries out charging strategy adjustment.
Technical solutions of the utility model are, a kind of new-energy automobile equalizing charge system, adopt DC bus powered topological network, described DC bus powered topological network comprises power distribution equipment, charging station, two-way AC/DC module and balanced Power entry module, power distribution equipment accesses from high-voltage fence, after carrying out transformation and filtering, divide two-way access descendant node, the described balanced Power entry module of one tunnel access, a low voltage electric network is accessed on another road, low voltage electric network is connected by cable with two-way AC/DC module, balanced Power entry module is connected by cable with two-way AC/DC module, the inside of balanced Power entry module is provided with data acquisition unit, CAN, battery BMS system and BMS intellectual analysis unit, charging station comprises two-way DC/DC device and charger, DC bus 5 is connected with charger by two-way DC/DC device.
BMS intellectual analysis unit carries out early warning and internal balance calculating according to the power consumption of the Design cooling load of switchgear house and current charger, and ensure electric power system reliability service, the analytical method of BMS intellectual analysis unit is:
The first step: period preset time T
Second step: T subtracts one, gathers the power load of each charger of charging station;
3rd step: if current total power load is less than 80% of the Design cooling load of current transformer substation, then each charger voluntarily with battery BMS system negotiates charging strategy;
4th step: if current total power load is greater than 80% of the Design cooling load of current transformer substation, current total power load is less than 100% of the Design cooling load of current transformer substation simultaneously, then notify the charger adjustment charging strategy just having started to charge, restriction charging current;
5th step: if current total power load is greater than 100% of native system Design cooling load, then notification section charger stops charging, preferentially meets rechargeable battery close to the charger be full of;
6th step: period time T is zero, no, turns second step;
7th step: turn the first step.
The beneficial effects of the utility model are:
1) control module of the utility model charger receives the instruction of balanced Power entry module, its charging strategy set with BMS of adjustment in real time;
2) the balanced Power entry module of the utility model differentiates electricity consumption peak valley according to historical data analysis, and on the basis ensureing safety utilization of electric power, timesharing is avoided the peak hour as new energy car battery charging;
3) the utility model detects the total load and current loads that charger affiliated area powers in real time, in real time the state parameter etc. of each charger of monitoring;
4) total load of the utility model according to current charging electrical network and the power load of current charger, adopts equalization algorithm to carry out internal control, carries out reasonable distribution to the charging load required;
5) the comprehensive current loads of current charging electrical network of the utility model charger and the BMS system of new-energy automobile carry out equalizing charge to new energy vehicle;
6) the utility model is according to the Design cooling load of current power supply area, differentiates electricity consumption peak valley, preferentially meets non-charging load, and on the basis taking into full account electric power system security of operation, the new-energy automobile that timesharing is avoided the peak hour in local area network realizes charging.
Accompanying drawing explanation
Fig. 1 is network structure of the present utility model
In figure, 1, high-voltage fence; 2, power distribution equipment; 3, low voltage electric network; 4, balanced Power entry module; 5, DC bus; 6, charging station; 7, two-way DC/DC device; 8, charger; 9, two-way AC/DC module.
Embodiment
As shown in Figure 1, the utility model adopts DC bus powered topological network, comprise power distribution equipment 2, charging station 6, two-way AC/DC module 9 and balanced Power entry module 4, power distribution equipment 2 accesses from high-voltage fence 1, after carrying out transformation and filtering, divide two-way access descendant node, the described balanced Power entry module 4 of one tunnel access, a low voltage electric network 3 is accessed on another road, low voltage electric network 3 is connected by cable with two-way AC/DC module 9, balanced Power entry module 4 is connected by cable with two-way AC/DC module 9, the inside of balanced Power entry module 4 is provided with data acquisition unit, CAN, battery BMS system and BMS intellectual analysis unit, battery BMS Operation system setting has bidirectional interface, charging station 6 comprises two-way DC/DC device 7 and charger 8, DC bus 5 is connected with charger 8 by two-way DC/DC device 7.
BMS intellectual analysis unit carries out early warning and internal balance calculating according to the power consumption of the Design cooling load of switchgear house and current charger, and ensure electric power system reliability service, the analytical method of BMS intellectual analysis unit is:
The first step: period preset time T
Second step: T subtracts one, gathers the power load of each charger of charging station;
3rd step: if current total power load is less than 80% of the Design cooling load of current transformer substation, then each charger 8 voluntarily with battery BMS system negotiates charging strategy;
4th step: if current total power load is greater than 80% of the Design cooling load of current transformer substation, current total power load is less than 100% of the Design cooling load of current transformer substation simultaneously, then notify that the charger 8 just having started to charge adjusts charging strategy, restriction charging current;
5th step: if current total power load is greater than 100% of native system Design cooling load, then notification section charger 8 stops charging, preferentially meets rechargeable battery close to the charger 8 be full of;
6th step: period time T is zero, no, turns second step;
7th step: turn the first step.
Charger 8 inside is provided with control module, is received the instruction of balanced Power entry module 4 by two-way DC/DC device 7, the charging strategy of in real time adjustment itself and battery BMS default;
Balanced Power entry module 4 differentiates electricity consumption peak valley according to historical data analysis, and on the basis ensureing safety utilization of electric power, timesharing is avoided the peak hour as new energy car battery charging;
The major function of balanced Power entry module of the present utility model has:
1) total load and current loads that charger 8 affiliated area powers is detected in real time.
2) state parameter etc. of each charger 8 is monitored in real time;
3) according to the total load of current charging electrical network and the power load of current charger 8, adopt equalization algorithm to carry out internal control, reasonable distribution is carried out to the charging load required;
4) the comprehensive current loads of current charging electrical network of charger 8 and the BMS system of new-energy automobile carry out equalizing charge to new energy vehicle;
5) system is according to the Design cooling load of current power supply area, differentiates electricity consumption peak valley, preferentially meets non-charging load, and on the basis taking into full account electric power system security of operation, the new-energy automobile that timesharing is avoided the peak hour in local area network realizes charging.
The utility model power factor reaches 0.99.
The utility model harmonic content controls lower than 5%.
Claims (1)
1. a new-energy automobile equalizing charge system, take DC bus powered topological network, described DC bus powered topological network comprises power distribution equipment, charging station, two-way AC/DC module and balanced Power entry module, it is characterized in that: power distribution equipment accesses from high-voltage fence, after carrying out transformation and filtering, divide two-way access descendant node, the described balanced Power entry module of one tunnel access, a low voltage electric network is accessed on another road, low voltage electric network is connected by cable with two-way AC/DC module, balanced Power entry module is connected by cable with two-way AC/DC module, the inside of balanced Power entry module is provided with data acquisition unit, CAN, battery BMS system and BMS intellectual analysis unit, charging station comprises two-way DC/DC device and charger, DC bus 5 is connected with charger by two-way DC/DC device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765140.8U CN205017062U (en) | 2015-09-30 | 2015-09-30 | New energy automobile equalizing charge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765140.8U CN205017062U (en) | 2015-09-30 | 2015-09-30 | New energy automobile equalizing charge system |
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| Publication Number | Publication Date |
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| CN205017062U true CN205017062U (en) | 2016-02-03 |
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| CN201520765140.8U Active CN205017062U (en) | 2015-09-30 | 2015-09-30 | New energy automobile equalizing charge system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617106A (en) * | 2019-01-15 | 2019-04-12 | 中国华能集团清洁能源技术研究院有限公司 | A kind of distributing battery energy storage system |
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2015
- 2015-09-30 CN CN201520765140.8U patent/CN205017062U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617106A (en) * | 2019-01-15 | 2019-04-12 | 中国华能集团清洁能源技术研究院有限公司 | A kind of distributing battery energy storage system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: Longgang street community of Longgang District of Shenzhen City Tongde Guangdong province 518049 pit road No. 64 building two Patentee after: Shenzhen city and Wei Wei power Polytron Technologies Inc Address before: 518049 Guangdong city of Shenzhen province Futian District Camry Factory 1, the entire 318 Patentee before: AUTOWAY, GUANGDONG ELECTRIC POWER CONSTRUCTION CO., LTD. |