CN106533324B - The automatic jump system of the function of photovoltaic power converter and method - Google Patents
The automatic jump system of the function of photovoltaic power converter and method Download PDFInfo
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- CN106533324B CN106533324B CN201610071631.1A CN201610071631A CN106533324B CN 106533324 B CN106533324 B CN 106533324B CN 201610071631 A CN201610071631 A CN 201610071631A CN 106533324 B CN106533324 B CN 106533324B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010248 power generation Methods 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 32
- 238000007689 inspection Methods 0.000 claims description 3
- 238000002503 electroluminescence detection Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The present invention discloses the automatic jump system of function and method of a kind of photovoltaic power converter.According to the present invention, the current direction of photovoltaic power converter is detected.According to the current direction of the photovoltaic power converter detected, photovoltaic power converter is made to keep or jump to corresponding functional status.Technology according to the present invention can allow photovoltaic power converter seamlessly to meet the application scenarios such as power generation and EL detection, not need human intervention and setting, can greatly improve automated job degree, lower production cost.
Description
Technical field
The present invention relates to photovoltaic power generation, relate more specifically to the function of the photovoltaic power converter in photovoltaic generating system certainly
Dynamic jump system and method.
Background technique
In recent years, as the extensive of photovoltaic generating system of worldwide and Chinese market is popularized, photovoltaic power generation is
Through becoming the outstanding person in new energy field.
Fig. 1 is the schematic diagram of typical photovoltaic generating system.As shown in Figure 1, typical power station photovoltaic generating system is main
It is divided into two parts: a plurality of photovoltaic group string and confluence inversion.The function of confluence inversion is the electricity generated in a plurality of photovoltaic group string
Can be carried out collect, inversion and grid-connected output.The photovoltaic module array that a plurality of photovoltaic group string is formed is to expose to sunlight and generate electricity
Unit after wherein photovoltaic module is first gone here and there simultaneously be connected in header box, carry out the generation and transmission of electric energy.
Photovoltaic plant uses maximum power point tracking technology often to improve the generating efficiency in power station.Maximum power point with
Track technology helps photovoltaic system constantly to work near maximum output power point.Implementation method there are two types of this function is usual, one
Kind is maximum power point tracking technology to be integrated in confluence Converting Unit, for example allow inverter work on maximum power point, from
Maximum power point is extracted in group string.Another kind is that maximum power point tracking technology is distributed to each component, passes through single component
Photovoltaic power converter completes MPPT maximum power point tracking.
Summary of the invention
The state transition Trigger Problems of photovoltaic power converter are solved the purpose of the present invention is to provide a kind of technology.It is logical
The current direction that judgement currently flows through photovoltaic power converter is crossed, realizes that auto state jumps, to make photovoltaic power converter
Better adapt to application environment.
The claimed first aspect of the present invention is a kind of automatic jump system of the function for photovoltaic power converter, packet
Include: photovoltaic power converter has input port and output port;Current detection means, for detecting photovoltaic power converter
Current direction;And function jumps device, for the current direction according to the photovoltaic power converter detected, makes photovoltaic function
Rate converter keeps or jumps to corresponding functional status.
Preferably, the current detection means is by the current direction of element in detection photovoltaic power converter come detection light
Lie prostrate the current direction of power converter.
Preferably, the current detection means passes through the input port of detection photovoltaic power converter or the electricity of output port
Direction is flowed to detect the current direction of photovoltaic power converter.
On the one hand, if the current direction for the photovoltaic power converter that the current detection means detects is from input terminal
Mouth arrives output port, then the function, which jumps device, makes the photovoltaic power converter keep or jump to photovoltaic power generation state.
On the other hand, if the current direction for the photovoltaic power converter that the current detection means detects is from output port to defeated
Inbound port, then the function, which jumps device, makes the photovoltaic power converter keep or jump to detecting state.
Preferably, the detecting state is EL detecting state.
The claimed second aspect of the present invention is a kind of automatic jump method of the function for photovoltaic power converter, institute
Photovoltaic power converter is stated with input port and output port, which comprises the electric current of detection photovoltaic power converter
Direction;And the current direction according to the photovoltaic power converter detected, so that photovoltaic power converter is kept or jump to phase
The functional status answered.
Preferably, the current direction for detecting photovoltaic power converter includes the electric current for detecting element in photovoltaic power converter
Direction.
Preferably, detect photovoltaic power converter current direction include detect photovoltaic power converter input port or
The current direction of output port.
On the one hand, if the current direction of the photovoltaic power converter detected be from input port to output port,
The photovoltaic power converter is set to keep or jump to photovoltaic power generation state.On the other hand, if the photovoltaic power detected turns
The current direction of parallel operation is so that the photovoltaic power converter is kept or jump to detection shape from output port to input port
State.
Preferably, the detecting state is EL detecting state.
Technology according to the present invention can allow photovoltaic power converter seamlessly to meet the applied fields such as power generation and EL detection
Scape does not need human intervention and setting, can greatly improve automated job degree, lowers production cost.
Detailed description of the invention
Below with reference to the accompanying drawings it is described in conjunction with the embodiments the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of typical photovoltaic generating system.
Fig. 2 illustrates the principle of typical photovoltaic power converter.
Fig. 3 illustrates the schematic diagram that photovoltaic power converter is abstracted as to a Two-port netwerk device.
Fig. 4 shows the service condition of a common power.
Fig. 5 A illustrates circuit diagram of the photovoltaic power converter in power generation application.
Fig. 5 B illustrates circuit diagram of the photovoltaic power converter in test-purpose.
Fig. 6 is the method for the current direction that preferred embodiment in accordance with the present invention is used to detect photovoltaic power converter.
Fig. 7 shows the frame of the automatic jump system of function for photovoltaic power converter of embodiment according to the present invention
Figure.
Fig. 8 shows the stream of the automatic jump method of function for photovoltaic power converter of embodiment according to the present invention
Cheng Tu.
Specific embodiment
Specific embodiments of the present invention are explained in detail below in conjunction with attached drawing.
The basic principle of photovoltaic power converter is the conversion by certain way, so that original electric current Incomplete matching
Component realizes real-time current matching, to eliminate the generating capacity non-matching phenomenon of each component in group string, improves system
Whole generated energy.The promotion of this generated energy at every moment all exists, the economy generated in the service life of photovoltaic plant 20-30
Benefit and return are considerable.
Fig. 2 illustrates the principle of typical photovoltaic power converter.
The top half of Fig. 2 is to be fitted without the photovoltaic module of photovoltaic power converter (to be also applied in photovoltaic module electric
Pond piece substring or single battery piece), its power generation characteristics in photovoltaic plant shows as exit potential VoutWith outlet electric current
Iout.Because of the I of various componentsoutFor various reasons not exclusively, to generate non-matching phenomenon.The lower half portion of Fig. 2 is peace
The photovoltaic module of photovoltaic power converter is filled.Photovoltaic power converter is first connected on component, by converting new outlet
Characteristic (shows as exit potential Vout1With outlet electric current Iout1) instead of the outlet characteristic of photovoltaic module script.
Photovoltaic power converter can be further abstracted as to a Two-port netwerk device.Fig. 3 is illustrated photovoltaic function
Rate converter is abstracted as the schematic diagram of a Two-port netwerk device.
As shown in figure 3, a figure left side is the input terminal of Two-port netwerk device, input state is determined by two parameters: VinAnd Iin;Figure
The right side is the output end of Two-port netwerk device, determines output state by two parameters: VoutAnd Iout.Although showing electric current side in Fig. 3
To and voltage positive and negative terminals, but in fact, the directionality of aforementioned four parameter is not unique." just " side is specified by arrow
To opposite direction mutually should be " negative " direction.
Photovoltaic power converter is used to carry out photovoltaic module, battery strings or cell piece outlet characteristic conversion, to change
The adaptability of photovoltaic module, battery strings or cell piece in photovoltaic generating system, promotes the efficiency of photovoltaic generating system, stability
Etc. characteristics.Under normal conditions, photovoltaic power converter does not have the characteristic of energy storage, and efficiency is (usual as close possible to 100%
In the case of photovoltaic power converter efficiency close to 100%) so as to as far as possible without loss carry out the conversion of photovoltaic power generation energy.According to
The input-output characteristic of this photovoltaic power converter can indicate (V with following formula according to Fig. 3 markin,Iin,Vout,Iout?
For absolute value) to meet basic law of conservation of energy:
Vin×Iin=Vout×Iout (1)
It is similarly Two-port netwerk device, photovoltaic power converter and common power have greatest differences in use.Commonly
The common purposes of power supply is power supply, such as inputs from 12V and generates 5V output.Fig. 4 shows the service condition of a common power.
As shown in Figure 4, the left side is input terminal, in addition to VinOutside, electric current forward direction IinIt is directed toward power module, to complete electricity
The input of energy.The right is output end, in addition to VoutOutside, electric current forward direction IoutIt is directed toward outside power module, to complete the output of electric energy
(VoutIt is opposite when being negative).
Although common power can also be abstracted as two-port network, service condition and photovoltaic power converter are very not
Together, under normal circumstances, energy input end and energy output end will not change function, i.e. energy is inputted from the left side, the right output.This
The state of sample common power only designs major function and state according to this service condition.If encountering special circumstances, need
Transformation energy input terminal is output end, and energy output end is input terminal, is typically due to fortuitous event, main not as one
Operating mode occur.Therefore common power is generally this latter case special designing state transition and critical function etc..
The case where when photovoltaic power converter is used in photovoltaic module, is then different.Photovoltaic power converter is described below to connect
Two kinds of typical uses (being not limited only to this) when in photovoltaic panel.
Fig. 5 A illustrates circuit diagram of the photovoltaic power converter in power generation application.As shown in Figure 5 A, light
Volt component generates electricity in the sun, and delivers power to the peripheral equipments such as load or inverter and electricity by photovoltaic power converter
The situation on road etc..For photovoltaic power converter, the left side is energy input end, and electric current flows into photovoltaic power converter;It is right
While being energy output end, electric current flows out photovoltaic power converter.The left side is shown in Fig. 5 A as photovoltaic module, but photovoltaic module
It may alternatively be battery substring or cell piece;The right be load but it is also possible to be inverter etc. absorb energy peripheral equipment,
Circuit etc..
Fig. 5 B illustrates circuit diagram of the photovoltaic power converter in test-purpose.As shown in Figure 5 B, instead
Photovoltaic module has been reflected the case where carrying out EL test.Identical with the connection in Fig. 5 A, only right end has changed external electrical by loading
Source, for pushing energy and electric current to photovoltaic module by photovoltaic power converter.In this case, photovoltaic power is turned
For parallel operation, the left side is energy output end, and electric current flows out photovoltaic power converter;The right is energy input end, and electric current flows into light
Lie prostrate power converter.It is photovoltaic module that the left side is shown in Fig. 5 B, but photovoltaic module also may alternatively be battery substring or electricity
Pond piece;The right is the property that power supply can detect photovoltaic module etc. but it is also possible to be other to the push electric current such as photovoltaic module
Peripheral equipment, the circuit etc. of energy.
EL mentioned herein is electroluminescent, also known as electroluminescent, is the abbreviation of English Electroluminescence.
EL imaging technique is used by many photovoltaic cells and component producer at present, for the latent defect of testing product, controls product
Quality.About its test philosophy and process, related data can refer to, details are not described herein.
It (for example is fixed with photovoltaic module it can be seen from analyzing above when photovoltaic power converter connects on photovoltaic module
Become a combination together), and when needing to meet simultaneously requirement (being not limited only to both of these case) that power generation and EL are tested, light
The function of volt power converter needs while meeting both (or a variety of) situations, and can accomplish the task satisfactorily.
It, can there are two types of situations to want to allow it to adapt to varying environment since photovoltaic power converter is an electronic equipment
It asks, realizes jumping for functional status, to meet different application environments.One is by setting, such as place switch, such as
The artificial mode of external write-in program order etc. allows photovoltaic power converter not have to detection external environment, and directly outside is artificial changes
Or the function of setting photovoltaic power converter, to be adapted in different application scenarios.Another, is without people
To intervene, photovoltaic power converter can be by detecting the variation of external environment, to carry out function turn automatically or adaptively
It changes, realizes and cope with different application scenarios.
The present invention is used for latter situation, and concentrates the positive negative direction using detection electric current, the conversion of Lai Shixian photovoltaic power
The automatic or adaptation function of device jumps.
Compare power generation from Fig. 5 A and Fig. 5 B and EL detects two kinds of application situations and (also can be used for voltage and current including other
The case where positive and negative directional combination) it can be seen that in power generation and EL detection, the connection type of photovoltaic power converter is identical,
The direction that only electric current flows through photovoltaic power converter changes.In power generation scene, photovoltaic power converter is defeated from the left side
Enter forward current, exports forward current from the right;In EL detection scene, photovoltaic power converter is that positive electricity is inputted from the right
Stream exports forward current from the left side.
A kind of typical electric current detecting method is given below in preferred embodiment in accordance with the present invention.
Fig. 6 is the method for the current direction that preferred embodiment in accordance with the present invention is used to detect photovoltaic power converter.
In Fig. 6, (this figure is in ground terminal or negative end) places an inspection leakage resistance R in current loop, when electric current stream
When through R, pressure drop will form on R.When electric current from left to right flows through R, the pressure drop of formation is left positive right negative;When electric current from the right side to
When a left side flows through R, the pressure drop of formation is that the right side is being born just in a left side.The current direction detected in this figure can be the current direction of output end.Root
According to formula (1), when the current direction of output end uniquely determines, the current direction of input terminal is also determining, therefore input terminal
Current direction also with regard to this establishment.
Fig. 6 is the current direction that photovoltaic power converter is known by examining the pressure drop direction of leakage resistance.There can also be other
Method knows the current direction of photovoltaic power converter, such as the pressure drop direction of switch A and B, the current direction in filter element,
Etc..As long as current direction can be obtained, specific method is not unique.
After current direction detection obtains, photovoltaic power converter can learn application scenarios locating at present.If root
According to the testing result of current direction, photovoltaic power converter should be in generating state, and the state of function setting at present is not such as
This, then it can jump to generating function, for example enter functions such as MPPT maximum power point tracking (MPPT), to realize power generation.Such as
Fruit is according to the testing result of current direction, and photovoltaic power converter should be in EL detecting state, and the state of function setting at present
Really not so, then it can jump to EL detection function, such as fixed operative duty cycles (duty cycle), so that photovoltaic
The input terminal and the complete direct ratio of output end characteristic of power converter, such EL detection device can be exported according to photovoltaic power converter
End characteristic directly analyzes the characteristic for obtaining the photovoltaic module of input terminal connection of photovoltaic power converter, thus in EL detection not
It needs to separate photovoltaic power converter and photovoltaic module also and can analyze and detect the characteristic of photovoltaic module.In above description, such as
The state of the current function setting of fruit itself matches with the application scenarios as obtained from detection current direction, then can keep this
The state of sample.
It is worth noting that, the positive and negative of current direction is not absolutely positive and negative, but there is threshold value.Such as " negative " next
It says, -2A is negative current direction, but can be judged with threshold value in practicing, for example detect (one, electric current less than 100mA
The positive value of very little), it is considered as electric current and has begun " negative " direction.Photovoltaic power converter can be carried out accordingly as a result,
Function jumps.
The above technology of the invention can allow photovoltaic power converter seamlessly to meet the applied fields such as power generation and EL detection
Scape does not need human intervention and setting, can greatly improve automated job degree, lowers production cost.
This patent is using the positive negative direction of detection electric current, and the function of Lai Shixian photovoltaic power converter jumps, to meet
The needs of different scenes remove human intervention and setting.Here scene is for generating electricity and detect with EL, however it is not limited to which this two
Kind.Other scenes, if the function of Lai Shixian photovoltaic power converter jumps, for subtracting using the positive negative direction of detection electric current
Less and human intervention and setting are removed, belongs to this patent range.
More generally, the function for photovoltaic power converter that Fig. 7 shows embodiment according to the present invention is jumped automatically
Transfer from one department to another the block diagram of system.
As shown in fig. 7, the automatic jump system 700 of the function for photovoltaic power converter of embodiment according to the present invention
In, at least may include following module: photovoltaic power converter 701 has input port and output port;Current detection means
702, for detecting the current direction of photovoltaic power converter;And function jumps device 703, for being filled according to by current detecting
The current direction for setting the photovoltaic power converter 701 that 702 detect makes photovoltaic power converter 701 keep or jump to accordingly
Functional status.
In above preferred embodiment, the current detection means 702 passes through member in detection photovoltaic power converter 701
The current direction of part detects the current direction of photovoltaic power converter 701.
In addition, the current detection means 702 can by detect photovoltaic power converter 701 input port or output
The current direction of port detects the current direction of photovoltaic power converter 701.
If the current direction for the photovoltaic power converter 701 that the current detection means 702 detects is from input terminal
Mouth arrives output port, then the function, which jumps device 703, makes the photovoltaic power converter 701 keep or jump to photovoltaic power generation
State.
On the other hand, if the current direction for the photovoltaic power converter 701 that the current detection means 702 detects is
From output port to input port, then the function, which jumps device 703, makes the photovoltaic power converter 701 keep or jump to
Detecting state.
In above preferred embodiment, the detecting state is EL detecting state.
Similarly, the function for photovoltaic power converter that Fig. 8 shows embodiment according to the present invention jumps automatically
The flow chart of method.
As shown in figure 8, the automatic jump method 800 of the function for photovoltaic power converter of embodiment according to the present invention
Start from step S801, in this step, detects the current direction of photovoltaic power converter.In step S803, according in step
The current direction for the photovoltaic power converter that S801 is detected makes photovoltaic power converter keep or jump to corresponding function shape
State.
In above preferred embodiment, the current direction of detection photovoltaic power converter includes detection photovoltaic power conversion
The current direction of element in device.
In addition, the current direction of detection photovoltaic power converter may include the input port for detecting photovoltaic power converter
Or the current direction of output port.
If the current direction of the photovoltaic power converter detected is to make the light from input port to output port
Volt power converter keeps or jumps to photovoltaic power generation state.
On the other hand, if the current direction of the photovoltaic power converter detected be from output port to input port,
The photovoltaic power converter is then set to keep or jump to detecting state.
In above preferred embodiment, the detecting state is EL detecting state.
After step S803, method 800 terminates.
Various embodiments of the present invention and implementation situation are described above.But the spirit and scope of the present invention are not
It is limited to this.Those skilled in the art will it is according to the present invention introduction and make more applications, and these application all this
Within the scope of invention.
Claims (8)
1. a kind of automatic jump system of function for photovoltaic power converter, comprising:
Photovoltaic power converter has input port and output port;
Current detection means, for detecting the current direction of photovoltaic power converter;And
Function jumps device, for the current direction according to the photovoltaic power converter detected, protects photovoltaic power converter
Corresponding functional status is held or jumps to,
Wherein:
If the current direction for the photovoltaic power converter that the current detection means detects is from input port to output end
Mouthful, then the function, which jumps device, makes the photovoltaic power converter keep or jump to photovoltaic power generation state;
If the current direction for the photovoltaic power converter that the current detection means detects is from output port to input terminal
Mouthful, then the function, which jumps device, makes the photovoltaic power converter keep or jump to detecting state.
2. the function automatic jump system according to claim 1 for photovoltaic power converter, wherein the electric current inspection
Device is surveyed by detecting the current direction of element in photovoltaic power converter to detect the current direction of photovoltaic power converter.
3. the function automatic jump system according to claim 1 for photovoltaic power converter, wherein the electric current inspection
Device is surveyed to convert by the current direction of the input port or output port that detect photovoltaic power converter to detect photovoltaic power
The current direction of device.
4. the function automatic jump system according to claim 1 for photovoltaic power converter, wherein the detection shape
State is EL detecting state.
5. a kind of automatic jump method of function for photovoltaic power converter, the photovoltaic power converter has input port
And output port, which comprises
Detect the current direction of photovoltaic power converter;And
According to the current direction of the photovoltaic power converter detected, photovoltaic power converter is made to keep or jump to corresponding function
Energy state,
Wherein:
If the current direction of the photovoltaic power converter detected is to make the photovoltaic function from input port to output port
Rate converter keeps or jumps to photovoltaic power generation state;
If the current direction of the photovoltaic power converter detected is to make the photovoltaic function from output port to input port
Rate converter keeps or jumps to detecting state.
6. the function automatic jump method according to claim 5 for photovoltaic power converter, wherein detection photovoltaic function
The current direction of rate converter includes the current direction for detecting element in photovoltaic power converter.
7. the function automatic jump method according to claim 5 for photovoltaic power converter, wherein detection photovoltaic function
The current direction of rate converter includes the current direction for detecting the input port or output port of photovoltaic power converter.
8. the function automatic jump method according to claim 5 for photovoltaic power converter, wherein the detection shape
State is EL detecting state.
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CN204836027U (en) * | 2015-07-16 | 2015-12-02 | 中航锂电(洛阳)有限公司 | Domestic energy storage power system |
CN105164885A (en) * | 2013-04-19 | 2015-12-16 | 京瓷株式会社 | Power control system, power control device, and method for controlling power control system |
CN105190941A (en) * | 2013-03-19 | 2015-12-23 | 索尼公司 | Separator, battery, battery pack, electronic apparatus, electric vehicle, power storage device, and power system |
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CN105190941A (en) * | 2013-03-19 | 2015-12-23 | 索尼公司 | Separator, battery, battery pack, electronic apparatus, electric vehicle, power storage device, and power system |
CN105164885A (en) * | 2013-04-19 | 2015-12-16 | 京瓷株式会社 | Power control system, power control device, and method for controlling power control system |
CN204836027U (en) * | 2015-07-16 | 2015-12-02 | 中航锂电(洛阳)有限公司 | Domestic energy storage power system |
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