CN102891476A - Communication standby lithium alternating-current power supply device, battery discharging protection system and method - Google Patents
Communication standby lithium alternating-current power supply device, battery discharging protection system and method Download PDFInfo
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- CN102891476A CN102891476A CN2011102033909A CN201110203390A CN102891476A CN 102891476 A CN102891476 A CN 102891476A CN 2011102033909 A CN2011102033909 A CN 2011102033909A CN 201110203390 A CN201110203390 A CN 201110203390A CN 102891476 A CN102891476 A CN 102891476A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007599 discharging Methods 0.000 title abstract description 8
- 238000004891 communication Methods 0.000 title description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title description 3
- 229910052744 lithium Inorganic materials 0.000 title description 3
- 238000012544 monitoring process Methods 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 230000002265 prevention Effects 0.000 claims description 27
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention relates to a discharging protection system (20) used for a battery power supply device (10). The discharging protection system (20) comprises a monitoring unit (103), a sampling unit, an analog-to-digital conversion unit (105) and a processor unit (106), wherein the discharging protection system (20) is used for monitoring at least one electric parameter of at least one battery unit and/or at least one inverter unit, and generating a monitoring signal; the sampling unit (104) is used for sampling the monitoring signal generated by the monitoring unit; the analog-to-digital conversion unit (105) is used for carrying out analog-to-digital conversion on a signal generated by sampling; the processor unit (106) is set to analyze the signal generated through the analog-to-digital conversion, and control one or more inverters when at least one electric parameter exceeds a preset threshold, so that the alternating current power supply output of at least one battery unit to a piece of corresponding external equipment is cut off. The invention also relates to a battery power supply device (10) comprising the system, and a battery discharging protection method.
Description
Technical field
The present invention relates to the discharge prevention of storage source electric power system, particularly relate to the discharge prevention for the iron lithium storage battery device for subsequent use of communication system, thereby avoid storage battery to be subjected to damage.
Background technology
Lithium iron battery has become a kind of development trend as the backup power of mobile far-end communication service access device and middle-size and small-size communication base station.Particularly, in the prior art, used a kind of communication lithium iron battery system of " SDA10-48 " type of being designed and developed by Jiangsu Shuangdeng Group Co.,Ltd.This system is a kind of intelligent unmanned standby electric power-supply system on duty, parts that can be used as power consumption equipment embed in the rack of power consumption equipment, the standby electricity that is used for access network equipment, far-end exchange, mobile communication equipment, transmission equipment, ground satellite station and the microwave communication equipment etc. of Small And Medium Capacity, function with concentrated monitoring, battery maintenance and management can satisfy unattended requirement.
But the communication of above-mentioned " SDA10-48 " type exists defective with the lithium iron battery system, because its rectifier and control circuit and lithium battery integrate, when the normal operation of equipment, can produce a large amount of heats, make lithium iron battery unit hot soak condition, this causes the catching fire of equipment easily, and hot operation itself also can cause ageing equipment to be accelerated or Frequent Troubles.On the other hand, should the communication of " SDA10-48 " type use the lithium iron battery system because heat radiation can not be used in outdoor mounted, so that promote certain limitation be arranged. can not satisfy the demand of mobile operator fully.
Summary of the invention
For overcoming the deficiencies in the prior art; the present invention aims to provide a kind of discharge prevention system and method for lithium iron battery standby power system; avoiding improper discharge prevention system and the guard method that causes of power supply discharge, so that the standby power system of a kind of stable performance, efficient and long service life to be provided.
According to an aspect of the present invention; a kind of discharge prevention system for the storage battery power supply device is provided; described storage battery power supply device comprises at least one secondary battery unit and at least one inverter unit; operation is used for providing Alternating Current Power Supply output to external equipment, and wherein this discharge prevention system comprises:
Monitoring means is used for monitoring at least one electrical quantity of described at least one secondary battery unit and/or described at least one inverter unit, and generates monitor signal;
Sampling unit is used for the monitor signal that monitoring means produces is sampled;
AD conversion unit is used for the signal that produces after sampling is carried out analog-to-digital conversion; With
Processor unit, be arranged for the signal that produces through analog-to-digital conversion is analyzed, and after described at least one electrical quantity exceeds predetermined value and reaches predetermined extent, control one or more in described at least one inverter unit, thereby so that cut off described at least one secondary battery unit to the Alternating Current Power Supply output of corresponding external equipment.In addition, described discharge prevention system also comprises: inverter cuts off protected location (107), is arranged to the control command according to described processor unit (106), and described at least one inverter unit (102) is cut off the interchange output of external equipment.
Wherein, according to a preferred embodiment, described secondary battery unit is the lithium iron battery unit, and described monitoring means is used for monitoring power output, output current and output voltage one or more of described at least one inverter unit, and perhaps described monitoring means is used for monitoring the terminal voltage of described at least one lithium iron battery unit.
Wherein, according to a preferred embodiment, described processor unit is arranged for: when the power output of described at least one inverter unit reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or when the power output of described inverter unit reaches predetermined extent less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
Wherein, according to a preferred embodiment, described processor unit is arranged for:
When the output voltage of described at least one inverter unit reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or when the output voltage of described inverter unit reaches predetermined extent less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
Wherein, according to a preferred embodiment, described processor unit is arranged for: when the output current of described at least one inverter unit reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
Wherein said processor unit is arranged for:
The external equipment Alternating Current Power Supply after 3 hours, is being reached 13% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of 150 watts of inverter section in described at least one inverter unit; Or the external equipment Alternating Current Power Supply after 6 hours, is being reached 15% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cut off the foreign exchanges power supply of the inverter section that is used for main equipment in described at least one inverter unit; Or the external equipment Alternating Current Power Supply after 7 hours, is being reached 20% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cut off the foreign exchanges power supply of the whole inverters in described at least one inverter unit.
According to another aspect of the present invention; a kind of battery AC electric supply installation is provided; comprise: at least one lithium iron battery unit and at least one inverter unit; operation is used for providing AC power output to external equipment; be characterised in that described device also comprises the aforementioned arbitrary discharge prevention system of root.
According to another aspect of the present invention; provide a kind of be used to monitoring accumulator plant and the method for discharge prevention being provided; wherein said battery powdered device comprises at least one secondary battery unit and at least one inverter unit; operation is used for providing AC power output to external equipment, and the method comprises:
Monitor at least one electrical quantity of described at least one secondary battery unit and/or described at least one inverter unit, and generate monitor signal;
The monitor signal that monitoring means produces is sampled;
The signal that produces after sampling is carried out analog-to-digital conversion;
The signal that produces through analog-to-digital conversion is analyzed, and after described at least one electrical quantity exceeds predetermined value and reaches predetermined extent, control one or more in described at least one inverter unit, thereby so that cut off described at least one secondary battery unit to the Alternating Current Power Supply output of corresponding external equipment.
The method according to this invention and system can avoid the storage battery over-discharge can, thereby protect it to suffer irreversible damage, increase its useful life.
Description of drawings
Figure 1 shows that the schematic diagram according to lithium iron battery electric supply installation of the present invention, comprising the structure of discharge prevention system;
Figure 2 shows that according to being used for monitoring accumulator plant of the present invention and the flow chart of the method for discharge prevention being provided.
Fig. 3 a-3d is depicted as and determines in the method according to this invention that inverter cuts off the flow chart of protection.
Embodiment
As shown in Figure 1, storage battery power supply device 10 of the present invention, comprise: at least one secondary battery unit 101 and at least one inverter unit 102, wherein at least one secondary battery unit is connected and/or is connected in parallel, to form the power supply of certain voltage, be connected with at least one inverter unit 102, each inverter unit can operate for providing Alternating Current Power Supply output to different external equipments respectively.Inverter unit is used for direct current output is become interchange output.
Further, the storage battery power supply device comprises discharge prevention system 20, and wherein this system 20 comprises:
Monitoring means 103, be connected with at least one inverter unit 102 with described at least one secondary battery unit 101, can operate be used at least one electrical quantity of monitoring described at least one secondary battery unit and/or described at least one inverter unit, and generate monitor signal; Sampling unit 104 is connected with described monitoring means 103, can operate for the monitor signal that monitoring means is produced and sample; AD conversion unit 105 is connected with described sampling unit 104, is used for the signal that produces after sampling is carried out analog-to-digital conversion; With processor unit 106, be connected with described AD conversion unit 105, be arranged for the signal that produces through analog-to-digital conversion is analyzed, and after described at least one electrical quantity exceeds predetermined threshold value, control one or more in described at least one inverter unit 102, thereby so that cut off the Alternating Current Power Supply output of 101 pairs of corresponding external equipments of described at least one secondary battery unit.
Also comprise under the inverter TURP from protected location 107, its according to the control signal of described processor to described at least one inverter unit 102 with exchange output and cut off protection.
According to one embodiment of present invention, comprise 4 groups inverter in described at least one inverter unit 102, each inverter 102 provides different interchange output to different external equipments respectively.Only for example purposes, suppose inverter 102
1Provide the interchange of 150W to export 102 to external equipment
2Provide the Alternating Current Power Supply of 90W to export 102 to external equipment
3Provide interchange output, 102 to main external equipment
4Provide interchange output to the core external equipment.Wherein, the output voltage of each inverter unit 102, output current and power output can be carried out Simultaneous Monitoring by monitoring means 103, and the overall both end voltage of secondary battery unit 101 is also by monitoring means 103 monitorings, and the Real-Time Monitoring value is transferred to sampling unit 104, signal by 103 pairs of monitorings of sampling unit carries out sampling processing, and sampled signal is sent to AD conversion unit 105 converts digital signal to, then carry out data analysis by 106 pairs of signals of processor unit.Processor unit 106 is judged concrete condition and is determined to take safeguard measure according to this digital signal.Wherein said monitoring means 103 can be observation circuit, and it only is connecting line more simply, and described inverter unit 102 and secondary battery unit 101 are connected to sampling unit 104.
Preferably, described processor unit 106 can adopt the TMS320VC2407 chip, and this TMS320VC2407 chip adopts dual power supply, and voltage and I/O interface voltage are respectively 1.8V and 3.3V in the nuclear of DSP, native system needs three kinds of power supplys, and voltage is 5V, 3.3V and 1.8V.Processor unit 106 also can adopt the TMS320C5402 chip.In addition, described AD conversion unit 105 can adopt MAX125/126 chip or MAX1324 chip.Wherein, MAX126/125 is one by one comparison A/D conversion chip of 14 of MAXIM company high speeds of producing, and 4 road synchronized samplings/retainer can be sampled simultaneously to the signal of 4 passages.
, be used for according to the flow chart that accumulator plant is carried out the method for discharge prevention of the present invention for originally being depicted as such as Fig. 2.This discharge prevention method relates to the discharge prevention of iron lithium storage battery power supply, and the control step by processor unit 106 is realized particularly.Wherein, comprise the steps:
Step 210: 103 pairs of inverter units of monitoring means, 102 at least one electrical quantity, for example output voltage, output current, power output are measured, and produce corresponding signal;
Step 220: 104 pairs of described at least one electrical quantitys of sampling unit for example voltage, electric current, power are sampled, the predeterminable or adjustment of sample frequency;
Step 230: 105 pairs of sampled signals of AD conversion unit are carried out modulus and are processed;
Step 240: 106 pairs of digital signals of processor unit are analyzed and are judged, and the output control command;
Step 250: inverter cuts off module 107 and according to the order of processor at least one inverter unit 102 is carried out lower TURP from protection, namely disconnects it to the Alternating Current Power Supply output of external equipment.
The below further describes and describes step 240.
Referring to Fig. 3 a, according to one embodiment of the method for the invention, (step 240) comprising in the control procedure of described processor unit 106:
When the power output of described at least one inverter unit for example reaches 10% greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or when the power output of described inverter unit (102) for example reaches 5% less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.Described inverter cuts off module 107 to be come inverter is carried out lower electric treatment according to the order of processor unit 106.
Wherein, the power output of inverter unit represents this inverter unit and storage battery overload greater than rated value, and power output then represents underloading less than another predetermined value.Overload and underloading mean that all some problems has appearred in storage battery or external equipment, need lower electro-detection or maintenance.
Referring to Fig. 3 a, another embodiment of the method according to this invention, (step 240) comprising in the control procedure of described processor unit 106:
When the output voltage of described at least one inverter unit 102 for example reaches 10% greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or when the output voltage of described inverter unit 102 for example reaches 3-5% less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
Described inverter cuts off module 107 to be come inverter is carried out lower electric treatment according to the order of processor unit 106.
Wherein, the output voltage of inverter unit represents this inverter unit and storage battery overvoltage greater than rated value, and output voltage then represents under-voltage less than another predetermined value.Overvoltage and under-voltage all meaning can cause storage battery or external equipment some problems to occur, need lower electro-detection or maintenance.
Referring to Fig. 3 c, another embodiment of the method according to this invention, (step 240) comprising in the control procedure of described processor unit 106:
For example 10% the time, cut off this inverter unit to the Alternating Current Power Supply output of external equipment greater than a predetermined value at the output current of described at least one inverter unit 102.
Wherein, the output current of inverter unit represents this inverter unit and storage battery overcurrent greater than rated value.Overcurrent all means and can cause storage battery or external equipment some problems to occur, and the problems such as too fast, partial short-circuit of for example discharging need lower electro-detection or maintenance.
Referring to Fig. 3 d, another embodiment of the method according to this invention, (step 240) comprising in the control procedure of described processor unit 106:
After predetermined power-on time, when the terminal voltage of described at least one secondary battery unit 101 is lower than a predetermined value and reaches predetermined extent, cut off at least one inverter unit to the Alternating Current Power Supply output of external equipment.
Wherein, the terminal voltage of secondary battery unit is lower than predetermined value and reaches predetermined degree and represent this storage battery over-discharge can, means that some problems appears in storage battery or external equipment, and the problems such as too fast, partial short-circuit of for example discharging need lower electro-detection or maintenance.
Particularly, the terminal voltage of secondary battery unit is lower than predetermined value and reaches predetermined extent and comprise:
The external equipment Alternating Current Power Supply after 3 hours, is being reached 13% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of 150 watts of inverter section in described at least one inverter unit; Or the external equipment Alternating Current Power Supply after 6 hours, is being reached 15% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cut off the foreign exchanges power supply of the inverter section that is used for main equipment in described at least one inverter unit; Or the external equipment Alternating Current Power Supply after 7 hours, is being reached 20% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cut off the foreign exchanges power supply of the whole inverters in described at least one inverter unit.
Further, in the solution of the present invention, can increase warning system or step, after secondary battery unit cuts off protection to portion of external equipment, can report to relevant system or department.
In addition, what need further specify is that each powers at least one inverter unit to different external equipments, and gives respectively the power supply safety guarantee according to the importance of external equipment.For general equipment, at battery discharge not at that time, should cut off as far as possible it was exchanged output, to reduce the infringement to battery, the tolerance level that its corresponding inverter exceeds predetermined value is lower.For important external equipment part, should keep as far as possible it is exchanged output, thus its corresponding inverter exceed the tolerance level of predetermined value should be higher.For extremely important external equipment part, should remain it is exchanged output, thus its corresponding inverter exceed the tolerance level of predetermined value should be high as much as possible.So when the energy shortage of battery own, the priority that inverter is cut off also should ensure the power supply priority of important external equipment.
Among the present invention, described secondary battery unit is the lithium iron battery unit, but does not get rid of the battery material that can adopt other.In addition, the purpose that cited numerical value is only used for illustrating among the present invention also can adopt other concrete numerical value.For example, 10% also can replace with 20%, 30%.5% also can replace with 2%, 3%.
Although above described the present invention with reference to specific embodiment, the invention is not restricted to these specific embodiments.To those skilled in the art, with reference to after aforementioned its illustrative embodiment that is not intended to limit the scope of the invention that only provides by example, many further modifications and variations will be proposed.Especially, the different characteristic from different embodiment can exchange in due course mutually.
In the claims, word " comprises " does not get rid of other elements or step, and indefinite article " " is not got rid of a plurality of.The minimum fact of narration different characteristic does not represent that the combination of these features can not advantageously be used in mutually different dependent claims.
Claims (13)
1. discharge prevention system (20) that is used for storage battery power supply device (10); described storage battery power supply device (10) comprises at least one secondary battery unit (101) and at least one inverter unit (102); operation is used for providing Alternating Current Power Supply output to external equipment, and wherein this discharge prevention system (20) comprising:
Monitoring means (103) is used for monitoring at least one electrical quantity of described at least one secondary battery unit and/or described at least one inverter unit, and generates monitor signal;
Sampling unit (104) is used for the monitor signal that monitoring means produces is sampled;
AD conversion unit (105) is used for the signal that produces after sampling is carried out analog-to-digital conversion; With
Processor unit (106), be arranged for the signal that produces through analog-to-digital conversion is analyzed, and after described at least one electrical quantity exceeds predetermined value and reaches predetermined extent, control one or more in described at least one inverter unit (102), thereby so that cut off described at least one secondary battery unit to the Alternating Current Power Supply output of corresponding external equipment.
2. discharge prevention according to claim 1 system, wherein
Described secondary battery unit (101) is the lithium iron battery unit, and
Described monitoring means (102) is one or more for power output, output current and the output voltage of monitoring described at least one inverter unit (102), and/or
Described monitoring means (102) is used for monitoring the terminal voltage of described at least one lithium iron battery unit.
3. discharge prevention according to claim 1 system, wherein
Described discharge prevention system (20) also comprises:
Inverter cuts off unit (107), is arranged to the control command according to described processor unit (106), and described at least one inverter unit (102) is cut off the interchange output of external equipment.
4. according to claim 1,2 or 3 described discharge prevention systems, wherein said processor unit (106) is arranged for:
When the power output of described at least one inverter unit (102) reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or
When the power output of described inverter unit (102) reaches predetermined extent less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
5. according to claim 1,2 or 3 described discharge prevention systems, wherein said processor unit (106) is arranged for:
When the output voltage of described at least one inverter unit (102) reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or
When the output voltage of described inverter unit (102) reaches predetermined extent less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
6. according to claim 1,2 or 3 described discharge prevention systems, wherein said processor unit (106) is arranged for:
When the output current of described at least one inverter unit (102) reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
7. according to claim 1,2 or 3 described discharge prevention systems, wherein said processor unit (106) is arranged for:
After predetermined power-on time, when the terminal voltage of described at least one secondary battery unit (101) is lower than a predetermined value and reaches predetermined extent, cut off at least one inverter unit to the Alternating Current Power Supply output of external equipment.
8. discharge prevention according to claim 7 system, wherein said processor unit (106) is arranged for:
The external equipment Alternating Current Power Supply after 3 hours, is being reached 13% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of 150 watts of inverter section in described at least one inverter unit; Or
The external equipment Alternating Current Power Supply after 6 hours, is being reached 15% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of the inverter section that is used for main equipment in described at least one inverter unit; Or
The external equipment Alternating Current Power Supply after 7 hours, is being reached 20% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of the whole inverters in described at least one inverter unit.
9. a battery AC electric supply installation (10); comprise: at least one lithium iron battery unit (101) and at least one inverter unit (102); operation is used for providing AC power output to external equipment; be characterised in that described device also comprises according to claim 1 arbitrary described discharge prevention system (20) in-8.
10. method that is used for accumulator plant is carried out discharge prevention, wherein said battery powdered device comprises at least one secondary battery unit and at least one inverter unit, and operation is used for providing AC power output to external equipment, and the method comprises:
At least one electrical quantity of monitoring (210) described at least one secondary battery unit and/or described at least one inverter unit, and generate monitor signal;
To the monitor signal that monitoring means produces sample (220);
The signal that produces after sampling is carried out analog-to-digital conversion (230);
The signal that produces through analog-to-digital conversion is analyzed, and after described at least one electrical quantity exceeds predetermined threshold value and reaches predetermined extent, one or more in (240) described at least one inverter unit of control, thus so that cut off described at least one secondary battery unit to the Alternating Current Power Supply output of corresponding external equipment.
11. method according to claim 10,
Wherein said monitoring step (210) comprising:
The monitoring described at least one inverter unit power output, output current and output voltage in one or more; And/or
The terminal voltage of described at least one secondary battery unit of monitoring; Or
Wherein said control step (240) comprising:
When the power output of described at least one inverter unit reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or
When the power output of described inverter unit reaches predetermined extent less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or
When the output voltage of described at least one inverter unit reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or
When the output voltage of described inverter unit reaches predetermined extent less than another predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment; And/or
When the output current of described at least one inverter unit reaches predetermined extent greater than a predetermined value, cut off this inverter unit to the Alternating Current Power Supply output of external equipment.
12. according to claim 10 or 11 described methods, wherein said control step (240) comprising:
After predetermined power-on time, when the terminal voltage of described at least one secondary battery unit is lower than a predetermined value and reaches predetermined extent, cut off at least one inverter unit to the Alternating Current Power Supply output of external equipment.
13. method according to claim 12, wherein said control step (240) comprises
The external equipment Alternating Current Power Supply after 3 hours, is being reached 13% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of 150 watts of inverter section in described at least one inverter unit; Or
The external equipment Alternating Current Power Supply after 6 hours, is being reached 15% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of the inverter section that is used for main equipment in described at least one inverter unit; Or
The external equipment Alternating Current Power Supply after 7 hours, is being reached 20% if the terminal voltage of the secondary battery unit of measuring is lower than corresponding nominal voltage, then cutting off the foreign exchanges power supply of the whole inverters in described at least one inverter unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110460020A (en) * | 2019-09-02 | 2019-11-15 | 广州番禺巨大汽车音响设备有限公司 | A kind of output protecting device of high-power mobile power source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110460020A (en) * | 2019-09-02 | 2019-11-15 | 广州番禺巨大汽车音响设备有限公司 | A kind of output protecting device of high-power mobile power source |
| CN110460020B (en) * | 2019-09-02 | 2022-05-17 | 广州番禺巨大汽车音响设备有限公司 | Output protection device of high-power mobile power supply |
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