CN208767847U - A kind of UPS of pair of battery under-voltage protection point Intelligent Dynamic variation - Google Patents
A kind of UPS of pair of battery under-voltage protection point Intelligent Dynamic variation Download PDFInfo
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- CN208767847U CN208767847U CN201820998839.2U CN201820998839U CN208767847U CN 208767847 U CN208767847 U CN 208767847U CN 201820998839 U CN201820998839 U CN 201820998839U CN 208767847 U CN208767847 U CN 208767847U
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Abstract
The utility model discloses the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation, comprising: alternating current main input end, the first static switch; EMI and lightning protection unit; fuse FU1, charger, rectifier; inverter; DC/DC boosting unit, charger, switching switch; fuse FU2, alternating current output end are connected.UPS described in the utility model can independently carry out the setting of battery under-voltage protection point Intelligent Dynamic, without increasing additional battery management system equipment, save the cost.
Description
Technical field
The utility model relates to circuit design fields, and in particular to what a kind of pair of battery under-voltage protection point Intelligent Dynamic changed
UPS。
Background technique
With the needs in market, UPS is widely used in various industries, and battery is the heart and uninterrupted power supply of UPS
The motivational guarantee of system, the UPS for not being equipped with battery can only be referred to as constant voltage and constant frequency.In city, battery becomes chemical energy when electrical anomaly
At electric energy, AC energy is become by the inverter in UPS and is conveyed to load, the uninterrupted continuous operation of proof load.In order to
Every profession and trade user is adapted to the requirements at the higher level of UPS power supply system, especially in terms of UPS battery intelligent management function, the skill of UPS
Art development level also needs to be continuously improved.
Valve-controlled type maintenance-free sealed lead acid storage battery is widely used in large, medium and small type UPS, occupies the 1/ of UPS totle drilling cost
4~1/2.And in the daily work, people think that battery is non-maintaining without aggravating to regard often unilaterally.However due to electricity
The unreasonable use in pond produces overdischarge, electrolyte dry-out, thermal runaway, early stage capacitance loss, internal short-circuit of battery etc. and asks
Topic, and then seriously affect the reliability of power supply system.Data show that battery failures and cause UPS hostdown or work
Abnormal ratio is about 60%.
The existing battery management system based on microprocessor monitors technology of the UPS of large capacity at present, observation is electric at any time
The charge and discharge state in pond periodically activates battery, and core holds and protection.But do not have battery under-voltage protection point intelligence
Function is set dynamically, therefore there are battery low current long-time over-discharge situation, battery is shortened, to reduce
The reliability of ups system.
In view of the above drawbacks, the utility model creator obtains originally practical new finally by prolonged research and practice
Type.
Utility model content
To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is, provides a kind of pair of battery undervoltage and protects
The UPS of shield point Intelligent Dynamic variation, comprising: alternating current main input end, the AC input and the first static switch
Input terminal is connected, and the input terminal of the output end and EMI and lightning protection unit of first static switch is connected in series, the EMI and
The output end of lightning protection unit is separately connected the input terminal of fuse FU1 and the input terminal of charger；The output of the fuse FU1
Hold the input terminal of cascade rectifiers；The input terminal of the output end shunt chopper of the rectifier and DC/DC boosting unit
The input terminal of output end, the DC/DC boosting unit is connected with the output end of charger；The output end of the inverter with cut
The input terminal for changing switch is connected, and the output end of the switching switch is connected with the input terminal of fuse FU2, the fuse
The output end of FU2 is connected with alternating current output end；The input terminal of the output end of the charger and the DC/DC boosting unit
It is connected with battery group；The input terminal of first static switch is additionally provided with to be connected with another input terminal of switching switch
The bypass connect.
Preferably, the input terminal of the output end of the charger and the DC/DC boosting unit also with a current transformer
It is connected, the current transformer is connected with battery group.
Preferably, the output end of the fuse FU2 is additionally provided with the circuit that alternating current bypass input end is connected, it is described
The second static switch is provided between the output end of fuse FU2 and alternating current bypass input end.
Preferably, the output end of the fuse FU2 is additionally provided with the circuit that alternating current bypass input end is connected, it is described
The second static switch is provided between the output end of fuse FU2 and alternating current bypass input end.
Preferably, the UPS further includes a control system, the control system is to respectively at the rectifier, DC/DC
Boosting unit, inverter, battery group, the first static switch, the second static switch are attached and control respectively.
Preferably, the rectifier is the APFC rectifier of booster type.
Preferably, the inverter is the inverter of DC/AC single-phase semi-bridge.
Preferably, the charger is single-end ortho-exciting charger.
Preferably, the control system is the CPU of STM32F103C8T6.
Preferably, normal/abnormal alternating current is converted into positive and negative 380V direct current by the rectifier.
Preferably, the direct current is transformed into 220V alternating current by the inverter.
Compared with the prior art the utility model has the beneficial effects that:
1, the utility model can be according to battery discharge current size and battery temperature dynamic adjustment battery under-voltage protection point
Voltage；
2, the utility model can make full use of battery capacity, while also be avoided that battery long-time low current overdischarge,
Extend battery；
3, the utility model can be improved ups system reliability, effectively reduce UPS power supply system failure rate, reduces and uses
Family use cost；
4, UPS described in the utility model can independently carry out the setting of battery under-voltage protection point Intelligent Dynamic, without increasing volume
Outer battery management system equipment, save the cost.
Detailed description of the invention
It, below will be to institute in embodiment description in order to illustrate more clearly of the technical solution in various embodiments of the utility model
Attached drawing to be used is needed to be briefly described.
Fig. 1 is the principles of the present invention block diagram；
Fig. 2 is the accumulator battery voltage sample circuit of the utility model:
Fig. 3 is the battery current sample circuit of the utility model；
Fig. 4 is the battery group temperature sampling circuit of the utility model；
Fig. 5 is the control system cpu circuit of the utility model；
Fig. 6 is the control flow chart of the utility model.
Specific embodiment
Below in conjunction with attached drawing, the above and other technical features and advantages of the present invention are described in more detail.
Embodiment 1
As shown in Figure 1, the UPS (uninterruptible power supply) of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation, comprising: exchange
Electric main input end 1, AC input 1 are connected with the input terminal of the first static switch Q1, and the first static switch Q1's is defeated
Outlet and the input terminal of EMI (electromagnetic interference) and lightning protection unit 2 are connected in series, and the output end of EMI and lightning protection unit 2 is separately connected guarantor
The input terminal of dangerous silk FU1 and the input terminal of charger 7；The input terminal of the output end cascade rectifiers 3 of fuse FU1；Rectifier 3
Selection is APFC (active power factor correction) rectifier of booster type；The output end of rectifier 3 is parallel with the defeated of inverter 4
Enter the output end at end and DC/DC boosting unit 8, what inverter was selected is the inversion of DC/AC (DC/AC) single-phase semi-bridge
Device；The input terminal of DC/DC boosting unit 8 is connected with the output end of charger 7；Charger is single-end ortho-exciting charger.Inversion
The output end of device 4 is connected with the input terminal of switching switch 5, and the output end of switching switch 5 is connected with the input terminal of fuse FU2
It connects, the output end of fuse FU2 is connected with alternating current output end 12.
Also it is connected with current transformer 10 in the output end of charger 7 with the input terminal of DC/DC boosting unit 8, electric current
Mutual inductor 10 is connected with battery group 11.
The bypass being connected with the switching another input terminal of switch 5 is additionally provided in the input terminal of the first static switch Q1.
It is additionally provided with the circuit that alternating current bypass input end 6 is connected in the output end of fuse FU2, fuse FU2's
The second static switch Q2 is provided between output end and alternating current bypass input end 6.
Control system 9 is to respectively at above-mentioned rectifier 3, DC/DC boosting unit 8, inverter 4, battery group 11, first
Static switch Q1, the second static switch Q2 are attached and control respectively.
As shown in figure 5, the CPU of the model STM32F103C8T6 of control system 9, it is a based on ARM Cortex-
32 microcontrollers of M kernel STM32 series, program storage capacity is 64KB, needs voltage 2V~3.6V, operating temperature
It is -40 DEG C~85 DEG C.
Wherein, the 10th foot is that accumulator battery voltage samples input pin, and the 11st foot is the sampling input of battery group discharge current
Foot, the 13rd foot are battery group temperature sampling input pin, and the 14th foot is that DC/DC boosting unit 8 and the control of 4 enable end of inverter are defeated
Foot out.
When alternating current is normal, alternating current is filtered by EMI and lightning protection device 2, fuse FU1, into average current control mode
Booster type APFC rectifier 3 and single-end ortho-exciting charger 7, wherein enter booster type APFC rectifier 3 be converted into it is positive and negative
380V direct current, direct current pass through single phase half bridge inverter 4 again, become 220V alternating current, and alternating current switches switch 5 by static
Powering load is exported with after fuse FU2；Into single-end ortho-exciting charger 7, intelligent charge is carried out to battery.
When city's electrical anomaly, the current transformer 10 of battery group 11, into DC/DC boosting unit 8, storage battery group
Voltage is converted into positive and negative 380V direct current, and direct current passes through single phase half bridge inverter 4 again, becomes 220V alternating current, and alternating current is logical
Powering load is exported after crossing fuse FU2.
When UPS breaks down, alternating current is directly output to load supplying by bypass input end 6.
According to battery discharge current size and battery temperature, control cell discharge curve, dynamic adjusts UPS battery most minimum living
Protect voltage.Battery capacity can be made full use of in this way, while being also avoided that battery long-time low current overdischarge, improve UPS system
System reliability, extends battery, reduces customer using cost.
As shown in Fig. 2, the accumulator battery voltage sampling in battery under-voltage protection point Intelligent Dynamic variation hardware sample circuit
Circuit, circuit theory: accumulator battery voltage BAT+ passes through resistance R44, resistance R43, resistance R63, capacitor C35 electric resistance partial pressure and resistance
Enter operational amplifier U3A amplifier after appearance, passes through resistance R68, capacitor C56 capacitance-resistance filter and two poles after the output of amplifier voltage follow
Pipe D15 clamper protects metering-in control system 9.
As shown in figure 3, the battery current sampling in battery under-voltage protection point Intelligent Dynamic variation hardware sample circuit
Circuit, circuit theory: current transformer current sampling signal BAT- is by resistance R66, resistance R4, capacitor C33 electric resistance partial pressure and
Enter operational amplifier U3B amplifier after capacitance-resistance filter, passes through resistance R70, capacitor C57 capacitance-resistance after the amplification output of amplifier arc in phase
Filtering and diode D16 clamper protect metering-in control system 9.
As shown in figure 4, the battery group temperature sampling in battery under-voltage protection point Intelligent Dynamic variation hardware sample circuit
Circuit, circuit theory: thermistor RT1 resistance value changes with temperature change, then puts voltage value TEM and also occurs mutually to strain
Change, therefore can be according to the voltage value of metering-in control system 9 by tabling look-up to obtain corresponding battery temperature value.
As shown in figure 5, control system 9 acquires accumulator battery voltage (ADC-V), battery discharge current (ADC-I), battery temperature
Spend (TEM) data, the data of acquisition back are filtered by CPU software, are calculated etc. handle, then data after processing and
The battery discharge curve data being pre-stored in CPU are compared, and generate new battery under-voltage protection point, new battery is finally arranged
Under-voltage protection point.When cell discharge voltage reaches newest battery under-voltage protection point, control system 9 will turn off DC/DC liter
Unit 8 and inverter 4 are pressed, UPS stops exchange electricity output.
As shown in fig. 6, battery under-voltage protection point Intelligent Dynamic changes software control method:
S1, device power.
S2, it is powered on and initialized, default value assignment is carried out to the initial condition data of equipment, to accumulator parameter (packet
Containing rated capacity, voltage, electric current, type, under-voltage protection point etc.) press default value assignment.
After the completion of S3, initialization, default carries out the acquisition of the data such as accumulator battery voltage, discharge current, temperature.
S4, the data of acquisition back such as are calculated, are filtered at the processing, it is then that data after processing and electric power storage tank discharge are bent
Line number generates new battery under-voltage protection point data according to being compared.
The new battery under-voltage protection point of S5, setting.
S6, the relevant data acquisition for starting next round repeat S3, S4, S5 step.
The UPS of the utility model has sampled more advanced protected mode: can be according to battery discharge current size and battery
Temperature dynamic adjustment battery under-voltage protection point voltage.When discharge current is big, the setting of battery under-voltage protection point is relatively lower；Electric discharge
Electric current hour, the setting of battery under-voltage protection point are relatively higher.Battery capacity can be made full use of in this way, while being also avoided that electricity
Pond long-time low current overdischarge extends battery.
The above is only the preferred embodiment of the present invention, is merely illustrative for the utility model, and
It is unrestricted.Those skilled in the art understand that can be to it in the spirit and scope defined by the utility model claims
Many changes, modifications, and even equivalents are carried out, but all will fall within the protection scope of the utility model.
Claims (10)
1. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation characterized by comprising alternating current main input end,
The AC input is connected with the input terminal of the first static switch, the output end of first static switch and EMI and
The input terminal of lightning protection unit is connected in series, and the output end of the EMI and lightning protection unit is separately connected the input terminal of fuse FU1 and fills
The input terminal of electric appliance；The input terminal of the output end cascade rectifiers of the fuse FU1；The output end parallel connection of the rectifier is inverse
Become the input terminal of device and the output end of DC/DC boosting unit, the output of the input terminal and charger of the DC/DC boosting unit
End is connected；The output end of the inverter is connected with the input terminal of switching switch, the output end of the switching switch and guarantor
The input terminal of dangerous silk FU2 is connected, and the output end of the fuse FU2 is connected with alternating current output end；The charger
Output end is connected with the input terminal of the DC/DC boosting unit with battery group；The input terminal of first static switch is also
It is provided with and switchs the bypass that another input terminal is connected with the switching.
2. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as described in claim 1, which is characterized in that described
The output end of charger is also connected with a current transformer with the input terminal of the DC/DC boosting unit, the Current Mutual Inductance
Device is connected with battery group.
3. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as claimed in claim 2, which is characterized in that described
The output end of fuse FU2 is additionally provided with the circuit that alternating current bypass input end is connected, the output end of the fuse FU2 and
The alternating current bypass input is provided with the second static switch between end.
4. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as claimed in claim 3, which is characterized in that described
UPS further includes a control system, and the control system is to respectively at the rectifier, DC/DC boosting unit, inverter, storage
Battery pack, the first static switch, the second static switch are attached and control respectively.
5. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as described in claim 1 or 4, which is characterized in that institute
State the APFC rectifier that rectifier is booster type.
6. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as described in claim 1 or 4, which is characterized in that institute
State the inverter that inverter is DC/AC single-phase semi-bridge.
7. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as described in claim 1, which is characterized in that described
Charger is single-end ortho-exciting charger.
8. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as claimed in claim 4, which is characterized in that described
Control system is the CPU of STM32F103C8T6.
9. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as described in claim 1, which is characterized in that described
Normal/abnormal alternating current is converted into positive and negative 380V direct current by rectifier.
10. the UPS of a kind of pair of battery under-voltage protection point Intelligent Dynamic variation as claimed in claim 9, which is characterized in that described
Direct current is transformed into 220V alternating current by the inverter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820998839.2U CN208767847U (en) | 2018-06-27 | 2018-06-27 | A kind of UPS of pair of battery under-voltage protection point Intelligent Dynamic variation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820998839.2U CN208767847U (en) | 2018-06-27 | 2018-06-27 | A kind of UPS of pair of battery under-voltage protection point Intelligent Dynamic variation |
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| CN208767847U true CN208767847U (en) | 2019-04-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729784A (en) * | 2019-10-23 | 2020-01-24 | 重庆梅安森科技股份有限公司 | Battery management system integrating high-side switch and MOS (metal oxide semiconductor) tube for controlling AC/DC (alternating current/direct current) switching of power supply |
| CN110797964A (en) * | 2019-05-29 | 2020-02-14 | 湖北中科能能源技术有限公司 | Direct-current power supply circuit applied to photovoltaic power station |
| CN111509835A (en) * | 2020-05-21 | 2020-08-07 | 广东电科院能源技术有限责任公司 | UPS battery device and UPS battery system |
| TWI736202B (en) * | 2020-02-06 | 2021-08-11 | 碩天科技股份有限公司 | On-line uninterruptible power system and operation method thereof |
| CN113708656A (en) * | 2021-10-26 | 2021-11-26 | 深圳市首航新能源股份有限公司 | Vehicle-mounted power supply conversion system and vehicle-mounted power supply conversion device |
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2018
- 2018-06-27 CN CN201820998839.2U patent/CN208767847U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797964A (en) * | 2019-05-29 | 2020-02-14 | 湖北中科能能源技术有限公司 | Direct-current power supply circuit applied to photovoltaic power station |
| CN110729784A (en) * | 2019-10-23 | 2020-01-24 | 重庆梅安森科技股份有限公司 | Battery management system integrating high-side switch and MOS (metal oxide semiconductor) tube for controlling AC/DC (alternating current/direct current) switching of power supply |
| CN110729784B (en) * | 2019-10-23 | 2023-04-28 | 重庆梅安森科技股份有限公司 | Battery management system integrating high-side switch and MOS tube control power supply AC/DC switching |
| TWI736202B (en) * | 2020-02-06 | 2021-08-11 | 碩天科技股份有限公司 | On-line uninterruptible power system and operation method thereof |
| US11183870B2 (en) | 2020-02-06 | 2021-11-23 | Cyber Power Systems, Inc. | On-line uninterruptible power system and operation method thereof |
| CN111509835A (en) * | 2020-05-21 | 2020-08-07 | 广东电科院能源技术有限责任公司 | UPS battery device and UPS battery system |
| CN113708656A (en) * | 2021-10-26 | 2021-11-26 | 深圳市首航新能源股份有限公司 | Vehicle-mounted power supply conversion system and vehicle-mounted power supply conversion device |
| CN113708656B (en) * | 2021-10-26 | 2022-02-22 | 深圳市首航新能源股份有限公司 | Vehicle-mounted power supply conversion system and vehicle-mounted power supply conversion device |
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