CN102868208B - 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
- CN102868208B CN102868208B CN201210359889.3A CN201210359889A CN102868208B CN 102868208 B CN102868208 B CN 102868208B CN 201210359889 A CN201210359889 A CN 201210359889A CN 102868208 B CN102868208 B CN 102868208B
- Authority
- CN
- China
- Prior art keywords
- circuit
- battery
- solar
- management system
- main control
- 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.)
- Active
Links
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 and controls 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 that battery charges, and the charge and discharge management of the battery pack of energy energy-storage system, energy management are then management difficult points of energy resource system.
In prior art, solar electric power supply system, is all made up of discrete solar inverter, battery pack, application lithium battery, the basis of also only just lithium battery adds lithium battery management system (BMS), also independently parts are remained, filling battery, electric discharge management, the energy management of battery is all that inversion system is simply estimated according to cell voltage and obtained, moreover, in battery management system in the market, discharge and recharge coherency management is only applied on lithium battery mostly, and the electric current of master control (electric switch pipe) in battery management system (BMS) is the insoluble difficult problem of industry, also be the part that failure rate is the highest, simultaneously, after using this device, in battery charging complete, excess temperature, when overvoltage, battery management system can be closed, because the reaction speed of electric switch pipe is slow, delay when system resumes power is in off-state by causing the stand-by power supply of controller, easily cause the massive losses of backend load power-off, make reliability and the inefficiency of system.
Summary of the invention
One of object of the application is avoid weak point of the prior art and provide a kind of solar inverter; this solar inverter; communication can be carried out with battery management system; the information such as the service condition of battery pack are obtained by battery management system; and reaction speed is fast, can remove the switching tube for overcurrent/over-charge protective in conventional batteries management system (BMS), can not cause backend load power-off; by rational maintenance and management, battery pack is made to obtain Appropriate application.
Provide a kind of solar inverter for this reason, be provided with and the first interface of battery management system communication and the battery interface that is connected with battery pack.
Solar inverter comprises solar energy branch road, civil power branch road, bypass branch and the first main control chip;
Solar energy branch road comprises the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the first current detection circuit that connect successively, first voltage detecting circuit is connected with solar energy by solar energy input, and the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller are all connected with the first main control chip with the first current detection circuit;
Civil power branch road comprises the second voltage detecting circuit, AC/DC transducer, direct voltage testing circuit and the DC/AC transducer that connect successively, second voltage detecting circuit, AC/DC transducer, direct voltage testing circuit are all connected with the first main control chip with DC/AC transducer, and the second voltage detecting circuit is electrically connected with city by mains electricity input end;
Contact between direct voltage testing circuit and DC/AC transducer and be connected to the second current detection circuit between the first main control chip;
First current detection circuit is all connected battery interface with the second current detection circuit;
First interface is located at the first main control chip;
Bypass branch comprises tertiary voltage testing circuit, and tertiary voltage testing circuit is connected with emergency power supply by emergency power supply input, and tertiary voltage testing circuit is connected with main control chip;
Tertiary voltage testing circuit, DC/AC transducer are connected with AC load by conversion switch circuit with the first main control chip.
The beneficial effect of a kind of solar inverter of the application is, by being provided with first interface at solar inverter, for carrying out communication with battery management system, without the need to using switching tube to realize, but detected the service condition of battery pack by battery management system, service condition is fed back to solar inverter, by solar inverter, rational maintenance and management is carried out to battery pack, reaction speed is fast, can not cause backend load power-off, make battery pack obtain Appropriate application.
Two of the object of the application is avoid weak point of the prior art and provide a kind of battery management system, this battery management system can carry out communication with solar inverter, without the need to using switching tube to realize, but by the battery pack service condition detected is informed solar inverter, by solar inverter by rational maintenance and management, reaction speed is fast, can not cause backend load power-off, make battery pack obtain Appropriate application.
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 solar inverter communication.
Battery management system comprises the detection control circuit of the second main control chip, current detection circuit and multiple monocell, each detection 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 second interface is located at the second main control chip.
Detection control circuit comprises 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 control and management device, when this cell voltage is too high, control and management device drives equalizing circuit that unnecessary electricity is transferred to the few battery of electricity by drive circuit.
Equalizing circuit comprises switching tube and inductance, switching tube controls ON/OFF by drive circuit, during switching tube conducting, unnecessary electricity is stored in inductance by the battery of too high voltages, when switching tube turns off, the energy that inductance stores by the built-in damper diode of switching tube by electric energy transfer to next battery, by the unnecessary electric energy transfer of battery on the few battery of electric energy, reach the effect of equilibrium.
Battery two ends are connected to filter capacitor, and inductance two ends are connected to the power resistor for current-limiting protection.
Second main control chip is MCU or DSP.
The beneficial effect of a kind of battery management system of the application is, by being provided with the second interface at battery management system, for carrying out communication with solar inverter, with the battery management system of prior art unlike the use cancelling switching tube, by battery management system, the service condition of the battery pack detected is informed solar inverter by uploading data, by filling of solar inverter regulating cell group, discharge parameter, the connection of battery pack and solar inverter need not be disconnected, greatly reduce the exception causing system burst power-off because disconnecting battery management system main path switch pipe, reaction speed is fast, backend load power-off can not be caused, the reliability of whole system and efficiency are improved simultaneously.
Three of the object of the application is avoid weak point of the prior art and provide a kind of solar electric power supply system, this solar electric power supply system can reduce the loss of circuit and raising reliability, and can accomplish to prevent in advance abnormal, the problem that prevents single battery short slab of battery, by rational maintenance and management, battery is made to obtain Appropriate application, reaction speed is fast, can not cause backend load power-off.
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, battery pack, solar inverter are connected with battery management system correspondence.
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: eliminate in original battery management system (BMS) for filling, the use of discharge protection switch pipe, by battery management system, the service condition of the battery pack detected is informed solar inverter by uploading data, by filling of solar inverter regulating cell group, discharge parameter, the connection of battery pack and solar inverter need not be disconnected, greatly reduce the exception causing system burst power-off because disconnecting battery management system main path switch pipe, reaction speed is fast, backend load power-off can not be caused, the reliability of whole system and efficiency are improved simultaneously.
Accompanying drawing explanation
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 in Fig. 1 to Fig. 5:
1---solar inverter;
2---battery management system;
3---battery pack.
Embodiment
embodiment 1.
A kind of solar inverter of the present embodiment as shown in Figure 1, to be arranged and the first interface of battery management system 2 communication is provided with and the first interface of battery management system 2 communication and the battery interface that is connected with battery pack 3.
The present embodiment is by being provided with first interface at solar inverter 1, for carrying out communication with battery management system 2, without the need to using switching tube to realize, but the service condition of battery pack 3 is detected by battery management system 2, service condition is fed back to solar inverter 1, carry out rational maintenance and management by solar inverter 1 pair of battery pack 3, reaction speed is fast, backend load power-off can not be caused, make battery pack obtain Appropriate application.
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;
Solar energy branch road comprises the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the first current detection circuit that connect successively, first voltage detecting circuit is connected with solar energy by solar energy input, and the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller are all connected with the first main control chip with the first current detection circuit;
Civil power branch road comprises the second voltage detecting circuit, AC/DC transducer, direct voltage testing circuit and the DC/AC transducer that connect successively, second voltage detecting circuit, AC/DC transducer, direct voltage testing circuit are all connected with the first main control chip with DC/AC transducer, and the second voltage detecting circuit is electrically connected with city by mains electricity input end;
Contact between direct voltage testing circuit and DC/AC transducer and be connected to the second current detection circuit between the first main control chip;
First current detection circuit is all connected battery interface with the second current detection circuit;
First interface is located at the first main control chip;
Bypass branch comprises tertiary voltage testing circuit, and tertiary voltage testing circuit is connected with emergency power supply by emergency power supply input, and tertiary voltage testing circuit is connected with main control chip;
Tertiary voltage testing circuit, DC/AC transducer are connected with AC load by conversion switch circuit with the first main control chip.
When complete machine needs maintenance, utilize bypass branch to power for AC load, AC load not power-off can be ensured.
The operation principle of the present embodiment is as follows:
When system starts, solar inverter can be patrolled and examined total system, according to battery management system 2(BMS) charge information uploaded, index request adjust;
When having civil power, solar energy to input, MPPT controller regulating system can follow the tracks of maximal power tracing pattern, in conjunction with the data that battery management system 2 is uploaded in real time, realizes real-time adjustment to battery pack 3 charge parameter;
When the power of civil power, solar energy input is enough (when exceeding battery charging requirement or fill full), solar inverter can control MPPT controller follow current, voltage;
If when solar energy, civil power are all in abnormal, solar inverter can send warning message the very first time, notifies that user processes in time, meanwhile, controls charge and discharge mode of operation, ensures the safety of system, accomplish that system is proactive.
System is also provided with communication interface, data upload can be carried out with host computer (supervisory control system), the battery management system got is detected the charge capacity of battery, voltage data and monocell related data, state and each testing circuit, AC/DC transducer, DC/AC transducer service data inform user, can realize any place, any time can solve the service data of whole system perfectly clear.
embodiment 2.
As shown in Figure 3, battery management system 2 is connected with the single battery of battery pack 3 a kind of battery management system of the present embodiment respectively, and battery management system 2 comprises the second interface with solar inverter 1 communication.
The present embodiment is by being provided with the second interface at battery management system 2, for carrying out communication with solar inverter 1, with the battery management system 2 of prior art unlike the use cancelling switching tube, by battery management system 2, the service condition of the battery pack 3 detected is informed solar inverter 1 by uploading data, by filling of solar inverter 1 regulating cell group 3, discharge parameter, the connection of battery pack 3 and solar inverter 1 need not be disconnected, greatly reduce the exception causing system burst power-off because disconnecting battery management system 2 main path switch pipe, reaction speed is fast, backend load power-off can not be caused, the reliability of whole system and efficiency 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 multiple monocell, each detection 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 second interface is located at the second main control chip.
Concrete, detection control circuit comprises 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 control and management device, when this cell voltage is too high, control and management device drives equalizing circuit that unnecessary electricity is transferred to the few battery of electricity by drive circuit.
Concrete, equalizing circuit comprises switching tube and inductance, switching tube controls ON/OFF by drive circuit, during switching tube conducting, unnecessary electricity is stored in inductance by the battery of too high voltages, when switching tube turns off, the energy that inductance stores by the built-in damper diode of switching tube by electric energy transfer to next battery, by the unnecessary electric energy transfer of battery on the few battery of electric energy, reach balanced effect.
Concrete, battery two ends are connected to filter capacitor, and 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 the present embodiment is as follows:
Battery management system 2(BMS) be connected with battery pack 3, detect voltage, charge volume, discharge capacity, the battery temperature data of single battery, in real time by data upload to solar inverter, allow solar inverter 1 adjust the operational factor of charging system, inverter system in real time, ensure the use that battery is reliable, safe.
When finding that single battery overcharges, namely system can open equalizing circuit, electricity unnecessary for this battery is transferred to the few battery of electricity, simultaneously, battery management system 2(BMS) data notification solar inverter 1 can be sent adjust charging voltage and electric current, ensure the reliability of system.
The battery management system 2(BMS of the present embodiment) compared with conventional battery management system 2 (BMS), difference is: eliminate and fill, switching tube on electric discharge major loop is (at battery full charging, overvoltage, control during excess temperature to disconnect with system) use, greatly reduce in battery management system 2 because switching tube postpones at the complete system resumes power afterwards of closing with overvoltage of charging and causes error cut-off machine fault, the problems such as the loss of switching tube, also reduce because inverter load shock causes battery pack 3 abnormal, elevator system reliability and efficiency, by battery management system 2(BMS) the data notification solar energy inversion of uploading regulates, what control fills, discharge parameter, the function of correlated equilibrium need not could be realized by disconnecting battery pack 3 and the connection of solar inverter 1, whole system reliability is improved, realize battery management system 2 and solar inverter 1 communication, exchanges data, reach the object of adjustment MPPT controller, rectification (charging) device electric current, voltage.
embodiment 3.
A kind of solar electric power supply system of the present embodiment as shown in Figure 5, comprises battery pack 3, the solar inverter 1 of embodiment 1 and the battery management system 2 of embodiment 2, and battery pack 3, solar inverter 1 are connected with battery management system 2 correspondence.
Solar inverter 1 is carried out communication by connection with battery pack 3 management system (BMS) and is connected by the present embodiment, by battery management system 2, the service condition of the battery pack 3 detected 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 is more perfectly combined.Make the energy-storage battery group 3 of solar inverter 1 obtain more perfect management, make system can understand the running status of energy-storage battery group 3 in real time, charge and discharge capacity, temperature etc., omnibearing protection battery, extend the useful life of battery pack 3.Meanwhile, by saving battery management system 2(BMS) be used as the switching tube of protection system in system, reaction speed is fast, can not cause backend load power-off, simplification system, the efficiency that improve whole system and reliability.
In addition, user can also by arranging man-machine dialog interface at the communication interface of solar inverter 1, to understand the running status of whole (containing battery pack 3) system, parameter and control.By being connected with upper, network, strange land Inspect and control can also be realized.The battery pack 3 of the present embodiment also can use other energy storage devices such as super capacitor.
Battery pack is placed with temperature sensor, when temperature sensor senses is too high to the temperature of battery pack 3, controls by the second main control chip the electric current and the voltage that reduce battery.
Finally should be noted that; above embodiment is only for illustration of the technical scheme of the application but not the restriction to the application's protection range; although be explained in detail the application with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the application or equivalent replacement, and not depart from essence and the scope of technical scheme.
Claims (2)
1. a solar inverter, is characterized in that, is provided with and the first interface of battery management system communication and the battery interface that is connected with battery pack, carries out rational maintenance and management by solar inverter to battery pack;
Comprise solar energy branch road, civil power branch road, bypass branch and the first main control chip;
Solar energy branch road comprises the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller and the first current detection circuit that connect successively, first voltage detecting circuit is connected with solar energy by solar energy input, and the first voltage detecting circuit, reverse-connection preventing circuit, MPPT controller are all connected with the first main control chip with the first current detection circuit;
Civil power branch road comprises the second voltage detecting circuit, AC/DC transducer, direct voltage testing circuit and the DC/AC transducer that connect successively, second voltage detecting circuit, AC/DC transducer, direct voltage testing circuit are all connected with the first main control chip with DC/AC transducer, and the second voltage detecting circuit is electrically connected with city by mains electricity input end;
Contact between direct voltage testing circuit and DC/AC transducer and be connected to the second current detection circuit between the first main control chip;
First current detection circuit is all connected battery interface with the second current detection circuit;
First interface is located at the first main control chip;
Bypass branch comprises tertiary voltage testing circuit, and tertiary voltage testing circuit is connected with emergency power supply by emergency power supply input, and tertiary voltage testing circuit is connected with main control chip;
Tertiary voltage testing circuit, DC/AC transducer are connected with AC load by conversion switch circuit with the first main control chip.
2. a kind of solar inverter according to claim 1, is characterized in that, the first main control chip is MCU or DSP.
3. a solar electric power supply system, it is characterized in that, comprise battery pack, solar inverter described in claim 1 to 2 any one and battery management system, battery pack, solar inverter are connected with battery management system correspondence, battery management system is connected with the single battery of battery pack respectively, and comprises the second interface with solar inverter communication.
4. a kind of solar electric power supply system according to claim 3, it is characterized in that, battery management system comprises the detection control circuit of the second main control chip, current detection circuit and multiple monocell, each detection 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 second interface is located at the second main control chip.
5. a kind of solar electric power supply system according to claim 4, it is characterized in that, detection control circuit comprises 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 control and management device, when this cell voltage is too high, control and management device drives equalizing circuit that unnecessary electricity is transferred to the few battery of electricity by drive circuit.
6. a kind of solar electric power supply system according to claim 5, it is characterized in that, equalizing circuit comprises switching tube and inductance, switching tube controls ON/OFF by drive circuit, and during switching tube conducting, unnecessary electricity is stored in inductance by the battery of too high voltages, when switching tube turns off, the energy that inductance stores by the built-in damper diode of switching tube by electric energy transfer to next battery, by the unnecessary electric energy transfer of battery on the few battery of electric energy, reach the effect of equilibrium.
7. a kind of solar electric power supply system according to claim 6, is characterized in that, battery two ends are connected to filter capacitor, and inductance two ends are connected to the power resistor for current-limiting protection.
8. a kind of solar electric power supply system according to claim 4, is characterized in that, the second main control chip is MCU or DSP.
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 CN102868208A (en) | 2013-01-09 |
| CN102868208B true 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) |
Families Citing this family (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 |
| CN117375164B (en) * | 2023-10-16 | 2024-10-15 | 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4614922B2 (en) * | 2006-06-19 | 2011-01-19 | 敦俊 井上 | Power supply device using battery pack |
-
2012
- 2012-09-25 CN CN201210359889.3A patent/CN102868208B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102868208A (en) | 2013-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104065154B (en) | Frequency changer emergency power supply system | |
| CN102624050B (en) | Battery management system capable of automatically shutting off unavailable units in serial-connection battery pack | |
| CN202474990U (en) | Non-circulating-current battery pack device | |
| CN207910499U (en) | A kind of alternating current-direct current charging pile | |
| CN204012789U (en) | Vehicle-mounted monitoring platform power administration module | |
| CN102856976A (en) | Discontinuous power supply, battery management system and discontinuous power supply system | |
| CN102969756B (en) | Intelligent storage battery pack with self-detection function and connection circuit thereof | |
| CN203014423U (en) | Battery module set management and control device of uninterruptible power supply | |
| CN103078384B (en) | A kind of uninterrupted power supply | |
| CN102280912B (en) | Equalization circuit of charge and discharge circuit of battery pack | |
| CN102280924B (en) | Uninterrupted power supply system for relay protection device | |
| CN102856959B (en) | A kind of wind-solar hybrid intelligent charging-discharging controller and wind-solar hybrid intelligent charging system | |
| CN102651572B (en) | Zero-time power standby system and zero-time power standby method | |
| WO2012097594A1 (en) | Battery protection device and method for dc power supply | |
| CN204398897U (en) | A kind of novel environment friendly rail locomotive power-supply system | |
| CN102545322B (en) | Battery module, power supply system and battery power supply control method | |
| CN104340146B (en) | A kind of track traffic backup power system | |
| CN202455098U (en) | Lithium ion battery balancing device | |
| CN105576776A (en) | Lithium ion storage battery power and communication DC power system | |
| CN105071525A (en) | Uninterruptible power supply system | |
| CN102868208B (en) | Solar inverter, cell management system and solar power supply system | |
| CN103607012A (en) | Special direct-current input power supply for inverter | |
| CN205319726U (en) | Safe hot plug formula battery supply system | |
| CN105391112B (en) | Moving emergency power supply and its voltage adaptive method are used in one kind communication | |
| CN105262171A (en) | Battery charging protection control system and method |
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 |