CN202798130U - Uninterruptible power supply and battery management system and uninterruptible power supply system - Google Patents
Uninterruptible power supply and battery management system and uninterruptible power supply system Download PDFInfo
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- CN202798130U CN202798130U CN201220491676.1U CN201220491676U CN202798130U CN 202798130 U CN202798130 U CN 202798130U CN 201220491676 U CN201220491676 U CN 201220491676U CN 202798130 U CN202798130 U CN 202798130U
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Abstract
The utility model relates to the technical field of new energy control and application, in particular to an uninterruptible power supply and battery management system and an uninterruptible power supply system. The uninterruptible power supply system comprises a battery pack, an interruptible power supply and a battery management system which are connected correspondingly. The uninterruptible power supply is communicated with the battery management system. Compared with the prior art, use of a switch tube in the battery management system is canceled, running parameter of the battery pack and detected by the battery management system is transmitted to the interruptible power supply through uploading data, charging and discharging parameter of the battery pack are adjusted by the interruptible power supply, connection between the battery pack and the interruptible power supply is not required to be broken, and prompt power failure of the system caused by the fact that the main way switch tube in the battery management system is cut off is greatly reduced. The uninterruptible power supply and battery management system and the uninterruptible power supply system are high in reaction speed, cannot cause back end load power failure and simultaneously improve reliability and efficiency.
Description
Technical field
The application relates to new forms of energy control and applied technical field, particularly a kind of uninterrupted power supply, battery management system and uninterruptible power system.
Background technology
At present, uninterrupted power supply 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, uninterruptible power system all is comprised of discrete uninterrupted power supply, 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 uninterrupted power supply is provided; this uninterrupted power supply; 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 uninterrupted power supply for this reason, be provided with first interface and the battery interface that is connected with battery pack with the battery management system communication.
Uninterrupted power supply comprises civil power branch road, bypass branch and the first main control chip;
The civil power branch road comprises the first voltage detecting circuit, A/D converter, direct voltage testing circuit and the D/A converter that connects successively, the first voltage detecting 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 current detection circuit between contact between direct voltage testing circuit and the D/A converter and the first main control chip;
Current detection circuit connects battery interface;
First interface is located at the first main control chip;
Bypass branch comprises the second voltage testing circuit, and the second voltage testing circuit is connected with emergency power supply by the emergency power supply input, and the second voltage testing circuit is connected with main control chip;
Second 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 uninterrupted power supply of the application is, by being provided with first interface at uninterrupted power supply, 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 uninterrupted power supply, by uninterrupted power supply 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 uninterrupted power supply, need not to realize with switching tube, but by the battery pack operating position that detects is informed uninterrupted power supply, pass through rational maintenance and management by uninterrupted power supply, 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 uninterrupted power supply 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 uninterrupted power supply, 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 uninterrupted power supply by uploading data, by filling of uninterrupted power supply regulating cell group, discharge parameter, needn't disconnect being connected of battery pack and uninterrupted power supply, 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 uninterruptible power system is provided, this uninterruptible power 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 uninterruptible power system for this reason, comprise battery pack, above-described uninterrupted power supply and above-described battery management system, the connection of being connected of battery pack, uninterrupted power supply and battery management system.
The beneficial effect of a kind of uninterruptible power system of the application is; by the communication at uninterrupted power supply 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 uninterrupted power supply by uploading data; by filling of uninterrupted power supply regulating cell group; discharge parameter; needn't disconnect being connected of battery pack and uninterrupted power supply; 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 uninterrupted power supply
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 uninterruptible power system
Include among Fig. 1 to Fig. 5:
1---uninterrupted power supply;
2---battery management system;
3---battery pack.
Embodiment
Embodiment 1.
A kind of uninterrupted power supply 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 uninterrupted power supply 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 uninterrupted power supply 1, carry out rational maintenance and management by 1 pair of battery pack of uninterrupted power supply 3, reaction speed is fast, can not cause rear end load outage, so that battery pack is rationally utilized.
As shown in Figure 2, uninterrupted power supply 1 comprises civil power branch road, bypass branch and the first main control chip;
The civil power branch road comprises the first voltage detecting circuit, A/D converter, direct voltage testing circuit and the D/A converter that connects successively, the first voltage detecting 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 current detection circuit between contact between direct voltage testing circuit and the D/A converter and the first main control chip;
Current detection circuit connects battery interface;
First interface is located at the first main control chip;
Bypass branch comprises the second voltage testing circuit, and the second voltage testing circuit is connected with emergency power supply by the emergency power supply input, and the second voltage testing circuit is connected with main control chip;
Second 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, uninterrupted power supply can be patrolled and examined total system, according to battery management system 2(BMS) charge information, the index request uploaded adjust;
When the civil power input was 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;
If civil power is in when unusual, uninterrupted power supply 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.
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 uninterrupted power supply 1 communication.
Present embodiment is by being provided with the second interface at battery management system 2, be used for carrying out communication with uninterrupted power supply 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 uninterrupted power supply 1 by uploading data, by filling of uninterrupted power supply 1 regulating cell group 3, discharge parameter, needn't disconnect being connected of battery pack 3 and uninterrupted power supply 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 uninterrupted power supply, allow uninterrupted power supply 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 uninterrupted power supply 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 uninterrupted power supply 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 uninterrupted power supply 1, make the whole system Reliability Enhancement; Realize battery management system 2 and uninterrupted power supply 1 communication, exchanges data, reach the purpose of adjusting MPPT controller, rectification (charging) device electric current, voltage.
A kind of uninterruptible power system of present embodiment comprises the uninterrupted power supply 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, uninterrupted power supply 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 uninterrupted power supply 1 and is connected, by battery management system 2 operating position of the battery pack 3 that detects is informed uninterrupted power supply 1 by uploading data, by the charge and discharge parameter of uninterrupted power supply 1 regulating cell group 3, uninterrupted power supply and battery management system 2(BMS), battery pack 3 more perfect combinations.Make the energy-storage battery group 3 of uninterrupted power supply 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 uninterrupted power supply 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 uninterrupted power supply 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 uninterrupted power supply according to claim 1 is characterized in that, comprises civil power branch road, bypass branch and the first main control chip;
The civil power branch road comprises the first voltage detecting circuit, A/D converter, direct voltage testing circuit and the D/A converter that connects successively, the first voltage detecting 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 current detection circuit between contact between direct voltage testing circuit and the D/A converter and the first main control chip;
Current detection circuit connects battery interface;
First interface is located at the first main control chip;
Bypass branch comprises the second voltage testing circuit, and the second voltage testing circuit is connected with emergency power supply by the emergency power supply input, and the second voltage testing circuit is connected with main control chip;
Second 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 uninterrupted power supply 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 uninterrupted power supply 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. uninterruptible power system, it is characterized in that, comprise battery pack, the described uninterrupted power supply 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, uninterrupted power supply and battery management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220491676.1U CN202798130U (en) | 2012-09-25 | 2012-09-25 | Uninterruptible power supply and battery management system and uninterruptible power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220491676.1U CN202798130U (en) | 2012-09-25 | 2012-09-25 | Uninterruptible power supply and battery management system and uninterruptible power supply system |
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| Publication Number | Publication Date |
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| CN202798130U true CN202798130U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220491676.1U Expired - Lifetime CN202798130U (en) | 2012-09-25 | 2012-09-25 | Uninterruptible power supply and battery management system and uninterruptible power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856976A (en) * | 2012-09-25 | 2013-01-02 | 广东易事特电源股份有限公司 | Discontinuous power supply, battery management system and discontinuous power supply system |
| CN104753099A (en) * | 2013-12-27 | 2015-07-01 | 中国移动通信集团广西有限公司 | Power supply system and power supply control method |
-
2012
- 2012-09-25 CN CN201220491676.1U patent/CN202798130U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856976A (en) * | 2012-09-25 | 2013-01-02 | 广东易事特电源股份有限公司 | Discontinuous power supply, battery management system and discontinuous power supply system |
| CN104753099A (en) * | 2013-12-27 | 2015-07-01 | 中国移动通信集团广西有限公司 | Power supply system and power supply control method |
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Granted publication date: 20130313 |