CN203119563U - Household direct-current energy storage equipment for photovoltaic lithium batteries - Google Patents

Household direct-current energy storage equipment for photovoltaic lithium batteries Download PDF

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Publication number
CN203119563U
CN203119563U CN 201320131541 CN201320131541U CN203119563U CN 203119563 U CN203119563 U CN 203119563U CN 201320131541 CN201320131541 CN 201320131541 CN 201320131541 U CN201320131541 U CN 201320131541U CN 203119563 U CN203119563 U CN 203119563U
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CN
China
Prior art keywords
energy storage
control device
storage equipment
lithium ion
ion battery
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320131541
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Chinese (zh)
Inventor
张慧娟
董永站
高立军
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NERNST NEW ENERGY (SUZHOU) CO Ltd
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NERNST NEW ENERGY (SUZHOU) CO Ltd
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Priority to CN 201320131541 priority Critical patent/CN203119563U/en
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Publication of CN203119563U publication Critical patent/CN203119563U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to household direct-current energy storage equipment for photovoltaic lithium batteries. The household direct-current energy storage equipment comprises a solar battery component, and is characterized in that an energy source output end of the solar battery component is connected with a control device, an energy storage port of the control device is connected with a lithium ion battery pack, and the control device is provided with an output control switch and an output interface which are independent to each other. Accordingly, electric energy stored in lithium ion batteries is converted into utilization voltage for customer use by the aid of a charging and discharging DC-DC (direct current) conversion component. The control device further comprises lithium ion battery BMS (battery management system) functions, such as overcharging and overdischarging protection, charging and discharging balance, power indication and temperature protection. By adopting the lithium ion batteries high in energy density and long in circulating life, size and weight of the integral system are effectively reduced, and using of the household direct-current energy storage equipment is more flexible and convenient.

Description

Photovoltaic lithium battery family dc energy storage equipment
Technical field
The utility model relates to a kind of energy storage device, relates in particular to a kind of photovoltaic lithium battery family dc energy storage equipment.
Background technology
Outdoor solar photovoltaic generation system power is little, versatile and flexible, easy for installation, is a kind of effective means that solves no electric powerup issue from far-off regions.Because the application of solar energy is subjected to the influence of factors such as weather, intensity of illumination, directly cause the electric energy of opto-electronic conversion output extremely unstable, therefore general solar energy storage system earlier with the electrical power storage of opto-electronic conversion in storage battery, by storage battery power consumption equipment is powered again.Existing domestic solar mostly adopts lead-acid battery as energy-storage units with system, lead acid accumulator is compared with lithium ion battery and is existed that cycle life is short, energy density is lower, the problem of replacing and troublesome maintenance, and lead still is a kind of heavy metal that very easily causes environmental pollution.Lead-acid battery is faced with the trend that is progressively substituted by lithium ion battery.
At present standard lead-acid battery system all is that battery module by 12V is in series, its operating voltage be 12V N doubly, N is the quantity of the module of series connection lead-acid battery.Substitute need the connect lithium-ion battery monomer of some of lead-acid battery with lithium ion battery and form the lithium ion battery group, make it reach the requirement of operating voltage.Because the lithium ion battery charge-discharge characteristic has determined that the charging/discharging voltage of each battery need be controlled in certain scope of application, if charging voltage is too high, battery has the danger of blast.When the battery discharge brownout, can influence the cycle life of battery.
The utility model content
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of photovoltaic lithium battery family dc energy storage equipment is provided.
For realizing the purpose of this utility model, photovoltaic lithium battery family dc energy storage equipment, include solar module, wherein: be connected with control device on the energy source output terminal head of described solar module, be connected with the lithium ion battery group on the energy reserves port of described control device, described control device is provided with separate output control switch, output interface.
Further; above-mentioned photovoltaic lithium battery family dc energy storage equipment; wherein; be provided with in the described control device and discharge and recharge the DC-DC transition components; the output of the described DC-DC of discharging and recharging transition components can link to each other by the source output terminal head with solar module; the output of the described DC-DC of discharging and recharging transition components is protected assembly by BMS, connects output control switch and output interface.
Further, above-mentioned photovoltaic lithium battery family dc energy storage equipment, wherein, described control device is provided with display module.
Further, above-mentioned photovoltaic lithium battery family dc energy storage equipment, wherein, described ion battery group adopts the monomer lithium ion battery to be composed in series, or is composed in parallel by the monomer lithium ion battery, or is made up of the connection in series-parallel of monomer lithium ion battery.
Further, above-mentioned photovoltaic lithium battery family dc energy storage equipment wherein, is provided with auxiliary modular converter between the described output interface.
Again further, above-mentioned photovoltaic lithium battery family dc energy storage equipment, wherein, described output interface includes 12V/5A lead-out terminal and 5V/1A lead-out terminal.
Adopt technical solutions of the utility model, by discharging and recharging the DC-DC transition components in the control device, convert the lithium ion battery electric energy stored to utilization voltage, use for the user.Control device also comprises lithium ion battery BMS function, i.e. functions such as super-charge super-discharge protection, charge and discharge balancing, electric weight indication, temperature protection.Owing to the lithium ion battery that has adopted the energy density height, had extended cycle life, effectively reduced the volume and weight of whole system.It is flexible more and convenient that it is used.
The purpose of this utility model, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram that dc energy storage equipment is used at photovoltaic lithium battery family.
The implication of each Reference numeral is as follows among the figure:
1 solar module, 2 control device
3 lithium ion battery groups, 4 output control switch
5 discharge and recharge DC-DC transition components 6BMS protection assembly
7 display modules, 8 auxiliary modular converters
912V/5A lead-out terminal 105V/1A lead-out terminal
Embodiment
Photovoltaic lithium battery family dc energy storage equipment as shown in Figure 1 includes solar module 1, and its unusual part is: be connected with control device 2 on the energy source output terminal head of the solar module 1 that the utility model adopts.Specifically, be connected with lithium ion battery group 3 at the energy reserves port of control device 2, and control device 2 is provided with separate output control switch 4, output interface.Like this, output voltage is direct voltage, drives DC load, can realize direct current output DC-DC translation function.
In conjunction with the utility model one preferred implementation, be provided with in the control device 2 that the utility model adopts and discharge and recharge DC-DC transition components 5, discharge and recharge the output of DC-DC transition components 5 and linking to each other by the source output terminal head of solar module 1.And from the safety that reality is used, the output that discharges and recharges DC-DC transition components 5 of the present utility model connects output control switch 4 and output interface by BMS protection assembly 6.Thus, realize best control.
Further, in time know present use state for the ease of the user, control device 2 is provided with display module 7.Like this, connect each relevant assembly by display module 7, realize that electric weight shows and the demonstration of operating state.
Again further, consider that energy storage need be different with the field of follow-up practical application, the ion battery group adopts the monomer lithium ion battery to be composed in series.Simultaneously, also can adopt the monomer lithium ion battery to compose in parallel.Certainly, consider some special dimensions, can also be formed by the connection in series-parallel of monomer lithium ion battery.
Certainly, be used in conjunction stability in use in the electric device process outside in order to improve each output interface, be provided with auxiliary modular converter 8 between the output interface.Simultaneously, consider electricity consumption device needs commonly used, output interface includes 12V/5A lead-out terminal 9 and 5V/1A lead-out terminal 10.
From implementation process of the present utility model, solar module 1 adopts photovoltaic silicon plate, and it is positive electrode that lithium ion battery group 3 adopts Li (NiCoMn) O2, and the monomer capacity is the cylinder 18650 type lithium ion batteries series connection of 2000mAh and composes in parallel.Photovoltaic silicon plate will shine superincumbent conversion of solar energy and become electric energy, the photovoltaic input of the voltage access control apparatus 2 of output, control device 2 is detected the input voltage of photovoltaic silicon plate earlier, the output voltage of photovoltaic panel and sunshine environmental correclation, has unsteadiness, when in the photovoltaic input voltage setting voltage scope, 2 pairs of photovoltaic input voltages of control device carry out the conversion of DC-DC direct current, the electric energy of photovoltaic input is carried out permanent power transfer, the photovoltaic input voltage is converted to the charging voltage of lithium ion battery group 3, and lithium ion battery group 3 is carried out the constant voltage charging.
In charging process, the voltage of each string of control device 2 circuit analyses monitoring battery pack when the value difference value is pressed in wantonly two crosstalks greater than set point, carries out balance to the charging current of every string; When the voltage of rechargeable battery set reaches the charging set point or when wherein a string battery pack reaches the charging set point, cut off charging current and stop charging.In the present embodiment, be provided with the output switch at control device 2, be used for the control output current.When opening the output switch, the voltage of battery pack can directly connect the power device of direct current, as the direct-current LED lamp.Also can the voltage process constant voltage of lithium ion battery group 3 be changed by another auxiliary modular converter 8 and become the electrical appliance required voltage, connect power device again, as convert 5V voltage to, miniaturized electronicss such as mobile phone are charged, or output 12V voltage, to direct current TV even load equipment charge.In the discharge process, control device 2 circuit are analyzed the voltage of monitoring battery pack each string equally, when the voltage of rechargeable battery set is lower than the charging set point or when wherein a string battery pack is lower than the discharge set point, cuts off discharging current and stop discharge.
In the present embodiment, solar panels are to 3 chargings of lithium ion battery group, and in the process of lithium ion battery group 3 discharges, 2 pairs of chargings of control device and discharging current are also monitored, and when charging and put an electric current above set point, in time cut off electric current.The voltage of monitoring lithium ion battery group 3, according to the charging and discharging curve characteristic of battery voltage, the magnitude of voltage when finding out different battery electric quantity is used to indicate the electric weight of battery pack.
System configuration needs according to reality; can increase temperature protection function on the control device, increase temperature sensor port at control device, temperature sensor detects the variations in temperature of lithium ion battery group; when the temperature of battery pack surpasses the safe handling temperature of setting, cut off charging and discharging currents.
By above-mentioned character express and by reference to the accompanying drawings as can be seen, adopt the utility model after, by discharging and recharging the DC-DC transition components in the control device, convert the lithium ion battery electric energy stored to utilization voltage, use for the user.Control device also comprises lithium ion battery BMS function, i.e. functions such as super-charge super-discharge protection, charge and discharge balancing, electric weight indication, temperature protection.Owing to the lithium ion battery that has adopted the energy density height, had extended cycle life, effectively reduced the volume and weight of whole system.It is flexible more and convenient that it is used.
Certainly, more than only be concrete exemplary applications of the present utility model, protection range of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.

Claims (6)

1. photovoltaic lithium battery family dc energy storage equipment, include solar module, it is characterized in that: be connected with control device on the energy source output terminal head of described solar module, be connected with the lithium ion battery group on the energy reserves port of described control device, described control device is provided with separate output control switch, output interface.
2. photovoltaic lithium battery according to claim 1 family dc energy storage equipment; it is characterized in that: be provided with in the described control device and discharge and recharge the DC-DC transition components; the output of the described DC-DC of discharging and recharging transition components can link to each other by the source output terminal head with solar module; the output of the described DC-DC of discharging and recharging transition components is protected assembly by BMS, connects output control switch and output interface.
3. photovoltaic lithium battery according to claim 1 family dc energy storage equipment, it is characterized in that: described control device is provided with display module.
4. photovoltaic lithium battery according to claim 1 family dc energy storage equipment, it is characterized in that: described ion battery group adopts the monomer lithium ion battery to be composed in series, or composed in parallel by the monomer lithium ion battery, or formed by the connection in series-parallel of monomer lithium ion battery.
5. photovoltaic lithium battery according to claim 1 family dc energy storage equipment is characterized in that: be provided with auxiliary modular converter between the described output interface.
6. photovoltaic lithium battery according to claim 1 family dc energy storage equipment, it is characterized in that: described output interface includes 12V/5A lead-out terminal and 5V/1A lead-out terminal.
CN 201320131541 2013-03-22 2013-03-22 Household direct-current energy storage equipment for photovoltaic lithium batteries Expired - Fee Related CN203119563U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320131541 CN203119563U (en) 2013-03-22 2013-03-22 Household direct-current energy storage equipment for photovoltaic lithium batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320131541 CN203119563U (en) 2013-03-22 2013-03-22 Household direct-current energy storage equipment for photovoltaic lithium batteries

Publications (1)

Publication Number Publication Date
CN203119563U true CN203119563U (en) 2013-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320131541 Expired - Fee Related CN203119563U (en) 2013-03-22 2013-03-22 Household direct-current energy storage equipment for photovoltaic lithium batteries

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103208836A (en) * 2013-03-22 2013-07-17 苏州能斯特新能源有限公司 Outdoor solar lithium battery energy storage device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103208836A (en) * 2013-03-22 2013-07-17 苏州能斯特新能源有限公司 Outdoor solar lithium battery energy storage device

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130807

Termination date: 20140322