CN102868208A - Solar inverter, cell management system and solar power supply system - Google Patents
Solar inverter, cell management system and solar power supply system Download PDFInfo
- Publication number
- CN102868208A CN102868208A CN2012103598893A CN201210359889A CN102868208A CN 102868208 A CN102868208 A CN 102868208A CN 2012103598893 A CN2012103598893 A CN 2012103598893A CN 201210359889 A CN201210359889 A CN 201210359889A CN 102868208 A CN102868208 A CN 102868208A
- Authority
- CN
- China
- Prior art keywords
- battery
- circuit
- management system
- main control
- solar
- 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.)
- Granted
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application relates to the technical field of new energy source control and application and particularly relates to a solar inverter, a cell management system and a solar power supply system, wherein the solar power supply system comprises a cell pack, the solar inverter and the cell management system, which are correspondingly connected. Compared with the prior art, the use of a switch tube in the cell management system is concealed through communication of the solar inverter and the cell management system; detected operation parameters of the cell pack are reported to the solar inverter through the cell management system by uploading data; charge and discharge parameters of the cell pack are adjusted by the solar inverter; and the connection of the cell pack and the solar inverter does not need to be cut off, therefore, the abnormity of sudden current failure caused by disconnection of a main path switch tube of the cell management system is greatly reduced; the response speed is fast; current failure of rear-end load is not caused, and the reliability and the efficiency of the entire system are simultaneously improved.
Description
Technical field
The application relates to new forms of energy control and applied technical field, particularly a kind of solar inverter, battery management system and solar electric power supply system.
Background technology
At present, solar energy is used widely to the technology of battery charging, and the charge and discharge management of the battery pack of energy energy-storage system, energy management then are management difficult points of energy resource system.
In the prior art, solar electric power supply system all is comprised of discrete solar inverter, battery pack; The application lithium battery, also only just increased lithium battery management system (BMS) on the basis of lithium battery, also remain independently parts, to filling of battery, the discharge management, the energy management of battery all is that simple estimation obtains inversion system according to cell voltage, moreover, in the battery management system in the market, discharging and recharging coherency management only is applied on the lithium battery mostly, and the electric current of the master control in the battery management system (BMS) (electric switch pipe) is the insoluble difficult problem of industry, it also is the highest part of failure rate, simultaneously, after using this device, finish in the battery charging, excess temperature, in the situation of overvoltage, battery management system can be closed it, because the reaction speed of electric switch pipe is slow, delay when system restores electricity will cause the stand-by power supply of controller to be in off-state, cause easily the massive losses of rear end load outage, so that the reliability of system and inefficiency.
Summary of the invention
One of purpose of the application is to be to avoid weak point of the prior art and a kind of solar inverter is provided; this solar inverter; can carry out communication with battery management system; obtain the information such as operating position of battery pack by battery management system; and reaction speed is fast, can remove the switching tube that is used for overcurrent/over-charge protective in the conventional batteries management system (BMS), can not cause rear end load outage; can pass through rational maintenance and management, so that battery pack is rationally utilized.
Provide a kind of solar inverter for this reason, be provided with first interface and the battery interface that is connected with battery pack with the battery management system communication.
Solar inverter comprises solar energy branch road, civil power branch road, bypass branch and the first main control chip;
The solar energy branch road comprises the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the first current detection circuit that connects successively, the first voltage detecting circuit is connected with solar energy by the solar energy input, and the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the current detection circuit of being connected all are connected with the first main control chip;
The civil power branch road comprises second voltage testing circuit, A/D converter, direct voltage testing circuit and the D/A converter that connects successively, second voltage testing circuit, A/D converter, direct voltage testing circuit and D/A converter all are connected with the first main control chip, and the second voltage testing circuit is electrically connected with the city by the mains electricity input end;
Be connected to the second current detection circuit between contact between direct voltage testing circuit and the D/A converter and the first main control chip;
The first current detection circuit all is connected battery interface with the second current detection circuit;
First interface is located at the first main control chip;
Bypass branch comprises the tertiary voltage testing circuit, and the tertiary voltage testing circuit is connected with emergency power supply by the emergency power supply input, and the tertiary voltage testing circuit is connected with main control chip;
Tertiary voltage testing circuit, D/A converter and the main control chip of being connected are connected with AC load by conversion switch circuit.
The beneficial effect of a kind of solar inverter of the application is, by being provided with first interface at solar inverter, be used for carrying out communication with battery management system, need not to realize with switching tube, but detect the operating position of battery pack by battery management system, operating position is fed back to solar inverter, by solar inverter battery pack is carried out rational maintenance and management, reaction speed is fast, can not cause rear end load outage, so that battery pack is rationally utilized.
Two of the application's purpose is to be to avoid weak point of the prior art and a kind of battery management system is provided, this battery management system can carry out communication with solar inverter, need not to realize with switching tube, but by the battery pack operating position that detects is informed solar inverter, pass through rational maintenance and management by solar inverter, reaction speed is fast, can not cause rear end load outage, so that battery pack is rationally utilized.
Provide a kind of battery management system, battery management system is connected with the single battery of battery pack respectively for this reason, comprises the second interface with the solar inverter communication.
Battery management system comprises the detection control circuit of the second main control chip, current detection circuit and a plurality of monocells, each detects control circuit and the second main control chip communication, current detection circuit detects the total current of battery pack and current information is fed back to the second main control chip, and described the second interface is located at the second main control chip.
Detect control circuit and comprise control and management device, voltage detecting circuit, drive circuit and equalizing circuit, voltage detecting circuit detects the voltage at battery two ends and information of voltage is fed back to the control and management device, when this cell voltage was too high, the control and management device drove equalizing circuit by drive circuit unnecessary electric weight is transferred to the few battery of electric weight.
Equalizing circuit comprises switching tube and inductance, switching tube is controlled conducting/disconnection by drive circuit, during the switching tube conducting, the battery of too high voltages is stored in inductance with unnecessary electric weight, when switching tube turn-offs, the energy of inductance storage by the built-in damper diode of switching tube with electric energy transfer to next battery, the unnecessary electric energy transfer of battery to the few battery of electric energy, is reached the effect of equilibrium.
The battery two ends are connected to filter capacitor, and the inductance two ends are connected to the power resistor for current-limiting protection.
The second main control chip is MCU or DSP.
The beneficial effect of a kind of battery management system of the application is, by be provided with the second interface at battery management system, be used for carrying out communication with solar inverter, different from the battery management system of prior art is: the use of cancellation switching tube, by battery management system the operating position of the battery pack that detects is informed solar inverter by uploading data, by filling of solar inverter regulating cell group, discharge parameter, needn't disconnect being connected of battery pack and solar inverter, greatly reduce because disconnecting battery management system main path switch pipe and cause the unusual of system burst outage, reaction speed is fast, can not cause rear end load outage, the reliability of whole system and efficient are improved simultaneously.
Three of the application's purpose is to be to avoid weak point of the prior art and a kind of solar electric power supply system is provided, this solar electric power supply system can reduce the loss and raising reliability of circuit, and unusual, the problem that prevents the single battery short slab that can accomplish to prevent in advance battery, by rational maintenance and management, so that battery is rationally utilized, reaction speed is fast, can not cause rear end load outage.
Provide a kind of solar electric power supply system for this reason, comprise battery pack, above-described solar inverter and above-described battery management system, the connection of being connected of battery pack, solar inverter and battery management system.
The beneficial effect of a kind of solar electric power supply system of the application is; by the communication at solar inverter and battery management system; compared with prior art: cancelled in original battery management system (BMS) for filling; the use of discharge protection switch pipe; by battery management system the operating position of the battery pack that detects is informed solar inverter by uploading data; by filling of solar inverter regulating cell group; discharge parameter; needn't disconnect being connected of battery pack and solar inverter; greatly reduce because disconnecting battery management system main path switch pipe and cause the unusual of system burst outage; reaction speed is fast; can not cause rear end load outage, the reliability of whole system and efficient are improved simultaneously.
Description of drawings
Fig. 1 is a kind of schematic diagram of solar inverter
Fig. 2 is the circuit block diagram of Fig. 1
Fig. 3 is a kind of circuit diagram of battery management system
Fig. 4 is the circuit block diagram of Fig. 3
Fig. 5 is a kind of schematic diagram of solar electric power supply system
Include among Fig. 1 to Fig. 5:
1---solar inverter;
2---battery management system;
3---battery pack.
Embodiment
Embodiment 1.
A kind of solar inverter of present embodiment arranges with the first interface of battery management system 2 communications and is provided with first interface and the battery interface that is connected with battery pack 3 with battery management system 2 communications as shown in Figure 1.
Present embodiment is by being provided with first interface at solar inverter 1, be used for carrying out communication with battery management system 2, need not to realize with switching tube, but pass through the operating position that battery management system 2 detects battery pack 3, operating position is fed back to solar inverter 1, carry out rational maintenance and management by 1 pair of battery pack of solar inverter 3, reaction speed is fast, can not cause rear end load outage, so that battery pack is rationally utilized.
As shown in Figure 2, solar inverter 1 comprises solar energy branch road, civil power branch road, bypass branch and the first main control chip;
The solar energy branch road comprises the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the first current detection circuit that connects successively, the first voltage detecting circuit is connected with solar energy by the solar energy input, and the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the current detection circuit of being connected all are connected with the first main control chip;
The civil power branch road comprises second voltage testing circuit, A/D converter, direct voltage testing circuit and the D/A converter that connects successively, second voltage testing circuit, A/D converter, direct voltage testing circuit and D/A converter all are connected with the first main control chip, and the second voltage testing circuit is electrically connected with the city by the mains electricity input end;
Be connected to the second current detection circuit between contact between direct voltage testing circuit and the D/A converter and the first main control chip;
The first current detection circuit all is connected battery interface with the second current detection circuit;
First interface is located at the first main control chip;
Bypass branch comprises the tertiary voltage testing circuit, and the tertiary voltage testing circuit is connected with emergency power supply by the emergency power supply input, and the tertiary voltage testing circuit is connected with main control chip;
Tertiary voltage testing circuit, D/A converter and the main control chip of being connected are connected with AC load by conversion switch circuit.
When complete machine need to overhaul, utilize bypass branch to power for AC load, can guarantee that AC load do not cut off the power supply.
The operation principle of present embodiment is as follows:
When system started, solar inverter can be patrolled and examined total system, according to battery management system 2(BMS) charge information, the index request uploaded adjust;
When civil power, solar energy input were arranged, the MPPT controller can regulating system be followed the tracks of the maximal power tracing pattern, and the data in conjunction with battery management system 2 is uploaded in real time realize real-time adjustment to battery pack 3 charge parameters;
When the power of civil power, solar energy input is enough when full (exceed the battery charging requirement or fill), solar inverter can be controlled MPPT controller follow current, voltage;
If solar energy, civil power all are in when unusual, solar inverter can send warning message the very first time, notifies the user in time to process, and simultaneously, control charge and discharge mode of operation guarantees security of system, and the system of accomplishing is proactive.
System also is provided with communication interface, can carry out data upload with host computer (supervisory control system), with the battery management system that gets access to detect charge capacity, voltage data and monocell related data, state and each testing circuit, the A/D converter of battery, the service data of D/A converter is informed the user, can realize any place, any time can be to the service data of whole system solve perfectly clear.
Embodiment 2.
A kind of battery management system of present embodiment as shown in Figure 3, battery management system 2 is connected with the single battery of battery pack 3 respectively, battery management system 2 comprises the second interface with solar inverter 1 communication.
Present embodiment is by being provided with the second interface at battery management system 2, be used for carrying out communication with solar inverter 1, different from the battery management system 2 of prior art is: the use of cancellation switching tube, by battery management system 2 operating position of the battery pack 3 that detects is informed solar inverter 1 by uploading data, by filling of solar inverter 1 regulating cell group 3, discharge parameter, needn't disconnect being connected of battery pack 3 and solar inverter 1, greatly reduce because disconnecting battery management system 2 main path switch pipes and cause the unusual of system burst outage, reaction speed is fast, can not cause rear end load outage, the reliability of whole system and efficient are improved simultaneously.
As shown in Figure 4, battery management system 2 comprises the detection control circuit of the second main control chip, current detection circuit and a plurality of monocells, each detects control circuit and the second main control chip communication, current detection circuit detects the total current of battery pack 3 and current information is fed back to the second main control chip, and described the second interface is located at the second main control chip.
Concrete, detect control circuit and comprise control and management device, voltage detecting circuit, drive circuit and equalizing circuit, voltage detecting circuit detects the voltage at battery two ends and information of voltage is fed back to the control and management device, when this cell voltage was too high, the control and management device drove equalizing circuit by drive circuit unnecessary electric weight is transferred to the few battery of electric weight.
Concrete, equalizing circuit comprises switching tube and inductance, switching tube is controlled conducting/disconnection by drive circuit, during the switching tube conducting, the battery of too high voltages is stored in inductance with unnecessary electric weight, when switching tube turn-offs, the energy of inductance storage by the built-in damper diode of switching tube with electric energy transfer to next battery, the unnecessary electric energy transfer of battery to the few battery of electric energy, is reached balanced effect.
Concrete, the battery two ends are connected to filter capacitor, and the inductance two ends are connected to the power resistor for current-limiting protection.
Concrete, the second main control chip is MCU or DSP.
The operation principle of present embodiment is as follows:
Battery management system 2(BMS) is connected with battery pack 3, detect voltage, charge volume, discharge capacity, the battery temperature data of single battery, in real time with data upload to solar inverter, allow solar inverter 1 adjust in real time the operational factor of charging system, inverter system, guarantee reliable, the safe use of battery.
When finding that single battery overcharges, equalizing circuit can namely be opened by system, and the electric weight that this battery is unnecessary is transferred to the few battery of electric weight, simultaneously, battery management system 2(BMS) can send data notification solar inverter 1 and adjust charging voltage and electric current, guarantee the reliability of system.
The battery management system 2(BMS of present embodiment) compares with conventional battery management system 2 (BMS), difference is: cancelled and having filled, switching tube on the discharge major loop is (at the battery full charging, overvoltage, control and system disconnection during excess temperature) use, greatly reduce in the battery management system 2 because of switching tube charging is complete close with overvoltage after system restore electricity and postpone to cause the error cut-off machine fault, the problems such as the loss of switching tube, also having reduced because of the inverter load shock causes battery pack 3 unusual, elevator system reliability and efficient, by battery management system 2(BMS) the data notification solar energy inversion of uploading regulates, filling of control, discharge parameter, needn't by the be connected function that could realize correlated equilibrium of disconnection battery pack 3 with solar inverter 1, make the whole system Reliability Enhancement; Realize battery management system 2 and solar inverter 1 communication, exchanges data, reach the purpose of adjusting MPPT controller, rectification (charging) device electric current, voltage.
Embodiment 3.
A kind of solar electric power supply system of present embodiment comprises the solar inverter 1 of battery pack 3, embodiment 1 and the battery management system 2 of embodiment 2 as shown in Figure 5, and battery pack 3, solar inverter 1 are connected with battery management system corresponding the connection.
Present embodiment carries out communication by connection with battery pack 3 management systems (BMS) with solar inverter 1 and is connected, by battery management system 2 operating position of the battery pack 3 that detects is informed solar inverter 1 by uploading data, by the charge and discharge parameter of solar inverter 1 regulating cell group 3, solar energy MPPT charging system and battery management system 2(BMS), battery pack 3 more perfect combinations.Make the energy-storage battery group 3 of solar inverter 1 obtain more perfect management, make system can understand in real time the running status of energy-storage battery group 3, the charge and discharge capacity, temperature etc., omnibearing protection battery prolongs the useful life of battery pack 3.Simultaneously, by saving battery management system 2(BMS) be used as the switching tube of protection system in the system, reaction speed is fast, can not cause rear end load outage, simplification system, the efficient that has improved whole system and reliability.
In addition, the user can also arrange man-machine dialog interface by the communication interface at solar inverter 1, in order to understand running status, parameter and the control of whole (containing battery pack 3) system.Can also by with upper, network connection, realize strange land monitoring and control.The battery pack 3 of present embodiment also can be used other energy storage devices such as super capacitor.
Battery pack is placed with temperature sensor, when temperature sensor senses arrives the excess Temperature of battery pack 3, is reduced electric current and the voltage of battery by the control of the second main control chip.
Should be noted that at last; above embodiment only be used for explanation the application technical scheme but not to the restriction of the application's protection range; although with reference to preferred embodiment the application has been done detailed description; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the application's technical scheme, and not break away from essence and the scope of present techniques scheme.
Claims (10)
1. a solar inverter is characterized in that, is provided with first interface and the battery interface that is connected with battery pack with the battery management system communication.
2. a kind of solar inverter according to claim 1 is characterized in that, comprises solar energy branch road, civil power branch road, bypass branch and the first main control chip;
The solar energy branch road comprises the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the first current detection circuit that connects successively, the first voltage detecting circuit is connected with solar energy by the solar energy input, and the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the current detection circuit of being connected all are connected with the first main control chip;
The civil power branch road comprises second voltage testing circuit, A/D converter, direct voltage testing circuit and the D/A converter that connects successively, second voltage testing circuit, A/D converter, direct voltage testing circuit and D/A converter all are connected with the first main control chip, and the second voltage testing circuit is electrically connected with the city by the mains electricity input end;
Be connected to the second current detection circuit between contact between direct voltage testing circuit and the D/A converter and the first main control chip;
The first current detection circuit all is connected battery interface with the second current detection circuit;
First interface is located at the first main control chip;
Bypass branch comprises the tertiary voltage testing circuit, and the tertiary voltage testing circuit is connected with emergency power supply by the emergency power supply input, and the tertiary voltage testing circuit is connected with main control chip;
Tertiary voltage testing circuit, D/A converter and the main control chip of being connected are connected with AC load by conversion switch circuit.
3. a kind of solar inverter according to claim 2 is characterized in that, the first main control chip is MCU or DSP.
4. battery management system, battery management system is connected with the single battery of battery pack respectively, it is characterized in that, comprises the second interface with the solar inverter communication.
5. a kind of battery management system according to claim 4, it is characterized in that, battery management system comprises the detection control circuit of the second main control chip, current detection circuit and a plurality of monocells, each detects control circuit and the second main control chip communication, current detection circuit detects the total current of battery pack and current information is fed back to the second main control chip, and described the second interface is located at the second main control chip.
6. battery management system according to claim 5, it is characterized in that, detect control circuit and comprise control and management device, voltage detecting circuit, drive circuit and equalizing circuit, voltage detecting circuit detects the voltage at battery two ends and information of voltage is fed back to the control and management device, when this cell voltage was too high, the control and management device drove equalizing circuit by drive circuit unnecessary electric weight is transferred to the few battery of electric weight.
7. battery management system according to claim 6, it is characterized in that, equalizing circuit comprises switching tube and inductance, switching tube is controlled conducting/disconnection by drive circuit, and during the switching tube conducting, the battery of too high voltages is stored in inductance with unnecessary electric weight, when switching tube turn-offs, the energy of inductance storage by the built-in damper diode of switching tube with electric energy transfer to next battery, the unnecessary electric energy transfer of battery to the few battery of electric energy, is reached the effect of equilibrium.
8. battery management system according to claim 7 is characterized in that, the battery two ends are connected to filter capacitor, and the inductance two ends are connected to the power resistor for current-limiting protection.
9. a kind of battery management system according to claim 5 is characterized in that, the second main control chip is MCU or DSP.
10. solar electric power supply system, it is characterized in that, comprise battery pack, the described solar inverter of claims 1 to 3 any one and the described battery management system of claim 4 to 9 any one, the connection of being connected of battery pack, solar inverter and battery management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210359889.3A CN102868208B (en) | 2012-09-25 | 2012-09-25 | Solar inverter, cell management system and solar power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210359889.3A CN102868208B (en) | 2012-09-25 | 2012-09-25 | Solar inverter, cell management system and solar power supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102868208A true CN102868208A (en) | 2013-01-09 |
| CN102868208B CN102868208B (en) | 2015-04-08 |
Family
ID=47446886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210359889.3A Active CN102868208B (en) | 2012-09-25 | 2012-09-25 | Solar inverter, cell management system and solar power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102868208B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311981A (en) * | 2013-03-01 | 2013-09-18 | 合肥创源车辆控制技术有限公司 | Battery balance energy bypass unit |
| CN108988474A (en) * | 2018-09-27 | 2018-12-11 | 慈溪市才越光伏科技有限公司 | A kind of solar inverter and its control method |
| CN117375164A (en) * | 2023-10-16 | 2024-01-09 | 江苏淮海新能源股份有限公司 | Portable energy storage charging control system with adjustable charging speed and control strategy thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007335337A (en) * | 2006-06-19 | 2007-12-27 | Atsutoshi Inoue | Power supply device using battery pack |
| CN201349185Y (en) * | 2008-12-10 | 2009-11-18 | 胡浩 | Self-regulated building generating system utilizing solar energy |
| CN201947021U (en) * | 2011-03-11 | 2011-08-24 | 武汉承光博德光电科技有限公司 | Wind, light and power multi-energy power supply management control system |
| CN202050254U (en) * | 2010-12-28 | 2011-11-23 | 吴江合美新能源科技有限公司 | Inductance balancer of electric quantity of adjacent batteries in serial-connected plumbic acid battery pack |
| CN102427256A (en) * | 2011-10-28 | 2012-04-25 | 山东大学 | Lithium battery pack management system of electric automobile |
| CN202872449U (en) * | 2012-09-25 | 2013-04-10 | 广东易事特电源股份有限公司 | Solar inverter, battery management system and solar power supply system |
-
2012
- 2012-09-25 CN CN201210359889.3A patent/CN102868208B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007335337A (en) * | 2006-06-19 | 2007-12-27 | Atsutoshi Inoue | Power supply device using battery pack |
| CN201349185Y (en) * | 2008-12-10 | 2009-11-18 | 胡浩 | Self-regulated building generating system utilizing solar energy |
| CN202050254U (en) * | 2010-12-28 | 2011-11-23 | 吴江合美新能源科技有限公司 | Inductance balancer of electric quantity of adjacent batteries in serial-connected plumbic acid battery pack |
| CN201947021U (en) * | 2011-03-11 | 2011-08-24 | 武汉承光博德光电科技有限公司 | Wind, light and power multi-energy power supply management control system |
| CN102427256A (en) * | 2011-10-28 | 2012-04-25 | 山东大学 | Lithium battery pack management system of electric automobile |
| CN202872449U (en) * | 2012-09-25 | 2013-04-10 | 广东易事特电源股份有限公司 | Solar inverter, battery management system and solar power supply system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311981A (en) * | 2013-03-01 | 2013-09-18 | 合肥创源车辆控制技术有限公司 | Battery balance energy bypass unit |
| CN108988474A (en) * | 2018-09-27 | 2018-12-11 | 慈溪市才越光伏科技有限公司 | A kind of solar inverter and its control method |
| CN117375164A (en) * | 2023-10-16 | 2024-01-09 | 江苏淮海新能源股份有限公司 | Portable energy storage charging control system with adjustable charging speed and control strategy thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102868208B (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103560548B (en) | Battery pack, battery connection system and battery set charge/discharge management method | |
| CN102856976A (en) | Discontinuous power supply, battery management system and discontinuous power supply system | |
| US9601937B2 (en) | Power supply method, power supply device, and base station | |
| WO2019019296A1 (en) | On-line checking discharge apparatus and method for storage battery set | |
| CN101813755B (en) | Charge and discharge test equipment for full on-line storage battery pack | |
| CN105406580B (en) | A kind of electric power system and method | |
| CN104281977A (en) | Hybrid microgrid application platform and control method theref | |
| CN102856959B (en) | A kind of wind-solar hybrid intelligent charging-discharging controller and wind-solar hybrid intelligent charging system | |
| CN102280912B (en) | Equalization circuit of charge and discharge circuit of battery pack | |
| CN203014423U (en) | Battery module set management and control device of uninterruptible power supply | |
| CN102969756B (en) | Intelligent storage battery pack with self-detection function and connection circuit thereof | |
| CN108321827A (en) | Backup battery energy storage discharge control system and method | |
| CN102280924B (en) | Uninterrupted power supply system for relay protection device | |
| CN102624050A (en) | Battery management system capable of automatically shutting off unavailable units in serial-connection battery pack | |
| CN107994640A (en) | The battery management system and its management method of passive trigger-type charging current limiter | |
| CN104340146B (en) | A kind of track traffic backup power system | |
| CN102545322B (en) | Battery module, power supply system and battery power supply control method | |
| CN102868208B (en) | Solar inverter, cell management system and solar power supply system | |
| CN102801204B (en) | A kind of 240VDC high voltage direct current electric power system and method | |
| CN201656535U (en) | Full on-line accumulator battery charge and discharge test equipment | |
| CN202798130U (en) | Uninterruptible power supply and battery management system and uninterruptible power supply system | |
| CN103036307A (en) | Mains supply fault detection circuit and mains supply fault detection method and protective power supply emergency power supply system | |
| CN101860050A (en) | Discharge test device for distributed full online storage battery pack | |
| CN202872408U (en) | Wind-solar complementary intelligent charging and discharging controller, battery management system and wind-solar complementary intelligent charging system | |
| CN102882271A (en) | Distribution automation portable test power source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |