CN204089331U - Direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment - Google Patents
Direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment Download PDFInfo
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- CN204089331U CN204089331U CN201420468201.XU CN201420468201U CN204089331U CN 204089331 U CN204089331 U CN 204089331U CN 201420468201 U CN201420468201 U CN 201420468201U CN 204089331 U CN204089331 U CN 204089331U
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- 238000001914 filtration Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 238000004146 energy storage Methods 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 abstract description 5
- 239000010703 silicon Substances 0.000 abstract description 5
- 210000000481 breast Anatomy 0.000 abstract description 4
- 150000003376 silicon Chemical class 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000020411 cell activation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment, it is characterized in that: external temperature linearly is converted into the signal of telecommunication by the temperature sensor in temperature collection circuit by power supply, then by this signal feedback to PWM control section, PWM control section is according to the change of this signal Modulating Power and output rectification filter, it normally cannot to start at extremely frigid zones equipment backup power systems such as the north for distribution power automation terminal and causes distribution network to occur the situation that mass termination goes offline, adopt power management module and the design of Novel breast body silicon energy storage device of full industrial design, choose the strong technical grade chip of anti-seismic design and the electrolyte of complex silicon salt for storage battery, ensure that storage battery is when-40 ° of C, capacity still can remain on more than 80%, work in the outdoor environment of-40 ° of C to+60 ° of C degree simultaneously, be not less than 5 years useful life.
Description
Technical field
The utility model relates to one direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment, is applied in electrical power distribution automatization system, belongs to Power System and its Automation field.
Background technology
Distribution Automation Construction is the inexorable trend of following intelligent grid development.In electrical power distribution automatization system, most of terminal backup power system can normally work at normal temperatures, meets all technical of distribution terminal in intelligent grid is built.But, under extremely frigid zones low temperature environment, often there is the phenomenon that cannot normally start, have a strong impact on the popularization of electrical power distribution automatization system in high latitude area and construction.So naturally just create anti-seismic design strong, low temperature environment can the active demand of the normal novel backup power system of directly cold start-up.
Summary of the invention
The purpose of this utility model is to provide one direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment, it normally cannot to start at extremely frigid zones equipment backup power systems such as the north for distribution power automation terminal and causes distribution network to occur the situation that mass termination goes offline, adopt power management module and the design of Novel breast body silicon energy storage device of full industrial design, choose the strong technical grade chip of anti-seismic design and the electrolyte of complex silicon salt for storage battery, make backup power system can-40 ° of direct cold start-ups of C low temperature environment, ensure that storage battery is when-40 ° of C, capacity still can remain on more than 80%, work in the outdoor environment of-40 ° of C to+60 ° of C degree simultaneously, be not less than 5 years useful life.
To achieve these goals, the technical solution of the utility model is achieved in that direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment, be made up of temperature collection circuit and output voltage controlling circuit, it is characterized in that: external temperature linearly is converted into the signal of telecommunication by the temperature sensor in temperature collection circuit by power supply, then by this signal feedback to PWM control section, PWM control section changes and output rectification filter according to this signal Modulating Power, the resistance R wherein in temperature collection circuit
11, resistance R
12, resistance R
13with temperature sensor PT100 composition sensor measurement electric bridge, electric bridge input, by controllable accurate source of stable pressure TL431 voltage stabilizing, adjusts arm resistance R
13, the differential voltage signal size that is input to amplifier can be changed for zeroing; Bridge output devises two-stage amplifying circuit; In output voltage controlling circuit, input voltage V
infirst disturb through EMI filter circuit filtering EMI and to interchange input rectifying, obtain stable DC input voitage V
dc, RCD clamp circuit is positioned at transformer primary, is used for suppressing the spike that excites of leakage inductance energy, and LD7575 is that PWM produces and control chip, the constant-duty cycle T=t of holding circuit switch element
on+ t
off; Circuit exports and connects close loop negative feedback, output voltage V
outfeedback voltage V is obtained through dividing potential drop
fb, feedback voltage V
fbthe sampled voltage V exported with temperature collection circuit
o1modulation voltage V is exported through difference amplifier EA
c, modulation voltage V
cafter optocoupler, control metal-oxide-semiconductor Q through the control chip LD7575 of PWM pulse width modulator
1oN time t
on, thus control output voltage V
out.
Good effect of the present utility model adopts technical grade circuit design, and choose technical grade components and parts, embeds in electric power loop with Effective Anti low temperature chip, realizes normally realizing control device at low temperature environment and power and the function of accumulator cell charging and discharging; Storage battery adopts newborn body silicon energy storage device, sulfuric acid electrolyte is replaced with newborn body electrolyte, electrolyte have employed novel complex silicon salt, the cryogenic property of battery is made to obtain very big improvement, thus ensure that storage battery is when-40 ° of C, capacity still can remain on more than 80%, works simultaneously, be not less than 5 years useful life in the outdoor environment of-40 ° of C to+60 ° of C degree.
Accompanying drawing explanation
Fig. 1 is the power work theory diagram of direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment.
Fig. 2 is the work block diagram of the power supply of direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment.
Fig. 3 is the circuit diagram of the power unit of direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment.
Fig. 4 is the fundamental diagram of direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment.
Fig. 5 is storage battery-40 ° of C charge-discharge test curve charts of direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described: as shown in Figure 1, 2, 3, direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment, be made up of temperature collection circuit and output voltage controlling circuit, it is characterized in that: external temperature linearly is converted into the signal of telecommunication by the temperature sensor in temperature collection circuit by power supply, then by this signal feedback to PWM control section, PWM control section changes and output rectification filter according to this signal Modulating Power, the resistance R wherein in temperature collection circuit
11, resistance R
12, resistance R
13with temperature sensor PT100 composition sensor measurement electric bridge, electric bridge input, by controllable accurate source of stable pressure TL431 voltage stabilizing, adjusts arm resistance R
13, the differential voltage signal size that is input to amplifier can be changed for zeroing; Bridge output devises two-stage amplifying circuit; In output voltage controlling circuit, input voltage V
infirst disturb through EMI filter circuit filtering EMI and to interchange input rectifying, obtain stable DC input voitage V
dc, RCD clamp circuit is positioned at transformer primary, is used for suppressing the spike that excites of leakage inductance energy, and LD7575 is that PWM produces and control chip, the constant-duty cycle T=t of holding circuit switch element
on+ t
off; Circuit exports and connects close loop negative feedback, output voltage V
outfeedback voltage V is obtained through dividing potential drop
fb, feedback voltage V
fbthe sampled voltage V exported with temperature collection circuit
o1modulation voltage V is exported through difference amplifier EA
c, modulation voltage V
cafter optocoupler, control metal-oxide-semiconductor Q through the control chip LD7575 of PWM pulse width modulator
1oN time t
on, thus control output voltage V
out.
PWM control section according to the change of this signal Modulating Power and output rectification filter, thus realizes under low-temperature condition, still keeps the stable normal of energy output voltage.
In order to prevent, single-stage multiplication factor is too high causes nonlinearity erron, and bridge output devises two-stage amplifying circuit (integrated operational amplifier can adopt LM358 etc.).Upon a drop in temperature, PT100 resistance diminishes, and the differential signal being input to amplifying circuit diminishes, the output voltage V of amplifying circuit
o1corresponding reduction.
Out-put supply control circuit comprises the discharge and recharge interface that two-way exchanges input and the output of two-way direct current and storage battery as shown in Figure 4, and technical grade chip ensure that module also can normally start under the low temperature environment of-40 ° of C.
When exchanging input and being normal, module can not only input dc power, can also charge to storage battery, keeps the electricity of storage battery sufficient; In time exchanging dead electricity, automatic seamless is switched to storage battery power supply pattern, and direct current input remains stable.On circuit, also have the node of cell activation in addition, can activate storage battery at any time, thus make storage battery still can keep good working state under cryogenic.The storage battery of backup power system adopts Novel breast body silicon energy storage device as shown in Figure 5, cryogenic property is good, what show is the process of a 12V Novel series breast body silicon energy storage device discharge and recharge under the condition of-40 ° of C, the time of each charging and discharging is 6 hours, red curve is charging and discharging currents, green curve is charging/discharging voltage, and the abscissa of reference axis is the discharge and recharge time, and the ordinate of reference axis is voltage and current value.As can be seen from the figure, each discharge electricity amount of battery all reaches 40% of rated capacity, meets Its Relevant Technology Standards requirement; Namely under the condition of-40 ° of C, charging and discharging currents still can maintain normal table.
Claims (1)
1. direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment, be made up of temperature collection circuit and output voltage controlling circuit, it is characterized in that: external temperature linearly is converted into the signal of telecommunication by the temperature sensor in temperature collection circuit by power supply, then by this signal feedback to PWM control section, PWM control section changes and output rectification filter according to this signal Modulating Power, the resistance R wherein in temperature collection circuit
11, resistance R
12, resistance R
13with temperature sensor PT100 composition sensor measurement electric bridge, electric bridge input, by controllable accurate source of stable pressure TL431 voltage stabilizing, adjusts arm resistance R
13, the differential voltage signal size that is input to amplifier can be changed for zeroing; Bridge output devises two-stage amplifying circuit; In output voltage controlling circuit, input voltage V
infirst disturb through EMI filter circuit filtering EMI and to interchange input rectifying, obtain stable DC input voitage V
dc, RCD clamp circuit is positioned at transformer primary, is used for suppressing the spike that excites of leakage inductance energy, and LD7575 is that PWM produces and control chip, the constant-duty cycle T=t of holding circuit switch element
on+ t
off; Circuit exports and connects close loop negative feedback, output voltage V
outfeedback voltage V is obtained through dividing potential drop
fb, feedback voltage V
fbthe sampled voltage V exported with temperature collection circuit
o1modulation voltage V is exported through difference amplifier EA
c, modulation voltage V
cafter optocoupler, control metal-oxide-semiconductor Q through the control chip LD7575 of PWM pulse width modulator
1oN time t
on, thus control output voltage V
out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420468201.XU CN204089331U (en) | 2014-08-19 | 2014-08-19 | Direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420468201.XU CN204089331U (en) | 2014-08-19 | 2014-08-19 | Direct applied Intelligent power distribution terminal backup power system under-40 ° of C environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089331U true CN204089331U (en) | 2015-01-07 |
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ID=52182002
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201764A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Intelligent power distribution terminal back-up source system directly applied under environment of -40 DEG C |
| CN110729793A (en) * | 2019-11-05 | 2020-01-24 | 上海置信电气股份有限公司 | Battery management device and method |
| CN112436580A (en) * | 2020-12-14 | 2021-03-02 | 国网北京市电力公司 | Suitcase type portable energy storage device and charging method thereof |
-
2014
- 2014-08-19 CN CN201420468201.XU patent/CN204089331U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201764A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Intelligent power distribution terminal back-up source system directly applied under environment of -40 DEG C |
| CN110729793A (en) * | 2019-11-05 | 2020-01-24 | 上海置信电气股份有限公司 | Battery management device and method |
| CN112436580A (en) * | 2020-12-14 | 2021-03-02 | 国网北京市电力公司 | Suitcase type portable energy storage device and charging method thereof |
| CN112436580B (en) * | 2020-12-14 | 2022-12-09 | 国网北京市电力公司 | Suitcase type portable energy storage device and charging method thereof |
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