CN207117217U - A kind of solar street light charge and discharge balancing system - Google Patents
A kind of solar street light charge and discharge balancing system Download PDFInfo
- Publication number
- CN207117217U CN207117217U CN201720781447.6U CN201720781447U CN207117217U CN 207117217 U CN207117217 U CN 207117217U CN 201720781447 U CN201720781447 U CN 201720781447U CN 207117217 U CN207117217 U CN 207117217U
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- control module
- voltage modulation
- street light
- balancing system
- Prior art date
- 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
It the utility model is related to solar storage battery technical field, a kind of solar street light charge and discharge balancing system is specifically disclosed, including the serial lithium battery group being composed in series by several lithium batteries, lithium battery voltage detection control module, lithium battery break-make control module, charging voltage modulation module and solar panel output voltage control module.The serial lithium battery group can connect several lithium batteries, after the lithium battery of different charging states is cascaded, by charge or discharge once or several times, can reach balanced substantially；If wherein there is a lithium battery to break down, the use of whole system is not influenceed；Charging voltage modulation module directly electrically connects with solar cell panel voltages control module, avoids the erection of multi-line, reduces the complexity and production cost of line architecture.
Description
Technical field
It the utility model is related to solar storage battery technical field, and in particular to a kind of solar street light charge and discharge balancing system
System.
Background technology
Battery equalization system is generally responsible for the calculating of battery in battery pack electricity, battery protection, the electric quantity balancing between battery
Signal communication inside and outside control and battery equalization system etc..In the prior art, the product of battery is typically used, is all needed
Battery equalization system arrange in pairs or groups to control.
Because battery is in the fabrication process it is difficult to ensure that have complete homogeneity, can be deposited between the battery unit respectively connected
In the difference of charge or discharge characteristic.Therefore, when using the battery pack of series-connected cell unit, there is a problem in that：Fill
When electric, in same battery pack, even if some battery units are overcharged, remain on and some battery units be present and not yet reach full
With；When or discharging again, in same battery pack, some battery units are still not fully discharged, but still some battery units are excessively put
Electricity.In addition, if battery unit is excessively discharged/charged for a long time, it is possible that significantly in the material for forming battery unit
Deterioration so that one of the reason for characteristic of battery unit becomes different, and this deterioration is difference between aggravation battery unit, especially
In solar street light field, because the battery replacing difficulty of street lamp is big, it is therefore desirable to which the discharge and recharge to battery pack carries out effective
Control.
Utility model content
In view of this, the application provides a kind of charge and discharge balancing system, to overcome deficiency of the prior art.
To solve above technical problem, technical scheme provided by the utility model is a kind of solar street light charge and discharge balancing
System, including the serial lithium battery group being composed in series by several lithium batteries, in addition to：Lithium battery voltage detection control module,
Lithium battery break-make control module, charging voltage modulation module and solar panel output voltage control module；The lithium battery
Group voltage detecting control module is electrically connected with serial lithium battery group, lithium battery break-make control module and charging voltage modulation module respectively
Connect, the lithium battery break-make control module also electrically connects with serial lithium battery group, the charging voltage modulation module also with the sun
Can the electrical connection of cell panel output voltage control module, the solar panel output voltage control module also with solar cell
Plate electrically connects.
Preferably, the lithium battery break-make control module include its number it is consistent with the lithium battery number of the series connection, divide
Not with each single lithium battery is connected in the serial lithium battery group controlling switch.
Preferably, the controlling switch is single-pole double-throw relay.
Preferably, the serial lithium battery group also include its number it is consistent with the lithium battery number of the series connection, respectively with
Each single lithium battery Schottky diode in parallel in the serial lithium battery group.
Preferably, the charging voltage modulation module includes a two-way voltage modulation circuit.
Preferably, the voltage modulation circuit is a dutycycle by HF switch regulation electric current so as to control power
The BUCK circuits of output, bi-directional voltage modulation circuit pass through the electricity after parallel connection for two voltage modulation circuits of a positive and a negative
Road, while a voltage modulation circuit can only be passed through therefrom by diode control electric current.
Compared with prior art, its advantage describes in detail as follows the application：If the serial lithium battery group can connect
A dry lithium battery, after the lithium battery of different charging states is cascaded, by charge or discharge once or several times, substantially may be used
To reach balanced；If wherein there is a lithium battery to break down, the use of whole system is not influenceed；Charging voltage modulation module is direct
Electrically connected with solar cell panel voltages control module, avoided the erection of multi-line, reduce the complexity of line architecture
And production cost.
Brief description of the drawings
Fig. 1 is the modular structure schematic diagram of the utility model embodiment；
Fig. 2 is the Cell On-Off control circuit schematic diagram of the utility model embodiment；
Fig. 3 is the schematic diagram of voltage modulation circuit in the utility model embodiment.
Embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and have
The utility model is described in further detail for body embodiment.
As shown in figure 1, the application provides a kind of solar street light charge and discharge balancing system, including by several lithium battery strings
Join the serial lithium battery group of composition, in addition to：Lithium battery voltage detection control module, lithium battery break-make control module, charging electricity
Press modulation module and solar panel output voltage control module.
Lithium battery group voltage detecting control module is electric with serial lithium battery group, lithium battery break-make control module and charging respectively
Modulation module electrical connection is pressed, lithium battery break-make control module also electrically connects with serial lithium battery group, and charging voltage modulation module is also
Electrically connected with solar panel output voltage control module, solar panel output voltage control module also with solar-electricity
Pond plate electrical connection.
As shown in Fig. 2 lithium battery break-make control module include its number with series connection lithium battery number it is consistent, respectively with string
Join the controlling switch of each single lithium battery connection in lithium battery group, the controlling switch is single-pole double-throw relay.Serial lithium battery
Group also includes that its number is consistent with the lithium battery number of series connection, Xiao in parallel with each single lithium battery in serial lithium battery group respectively
Special based diode.
Lithium battery voltage detection control module includes MCU (not shown)s, lithium battery voltage detection control module detection
Difference to ceiling voltage of the serial lithium battery group in electric discharge between its each single lithium battery and minimum voltage exceedes and in advance set
During fixed threshold value, then control lithium battery break-make control module by the minimum single lithium battery of voltage in serial lithium battery group from series connection
Lithium battery group is broken；If lithium battery voltage detection control module detects that single lithium battery reaches full in advance during charging
With, then control lithium battery break-make control module the single lithium battery for reaching saturation in advance is broken from serial lithium battery group；Lithium
The information transmission that serial lithium battery group series number changes also is modulated mould by battery voltage detection control module to charging voltage
Block, charging voltage modulation module adjust its charging voltage according to the series number of serial lithium battery group.Specifically, it is worked
In journey by the way of disjunction is balanced, only a relatively low lithium battery string of capacity is temporarily left unused certain time, while maintain it
The work of its single lithium battery, avoid the charge and discharge cycles of the balanced loss of electricity transfer and internal battery pack.
As shown in figure 3, charging voltage modulation module includes a two-way voltage modulation circuit.The voltage modulation circuit root
The real time charging or discharge voltage provided according to lithium battery voltage detection control module, adjusts solar panel output voltage control
The output of module or input voltage, so as to adjust output or input power, output or input voltage are high, then power is big, it is on the contrary then
Power is small.
The voltage modulation circuit is a dutycycle by HF switch regulation electric current so as to control power output
BUCK circuits, bi-directional voltage modulation circuit for a positive and a negative two voltage modulation circuits by the circuit after parallel connection, simultaneously
A voltage modulation circuit it can only be passed through therefrom by diode control electric current.
It the above is only preferred embodiment of the present utility model, it is noted that above-mentioned preferred embodiment should not regard
For that should be defined to limitation of the present utility model, the scope of protection of the utility model by claim limited range.For
For those skilled in the art, do not departing from spirit and scope of the present utility model, can also make some
Improvements and modifications, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of solar street light charge and discharge balancing system, including the serial lithium battery group being composed in series by several lithium batteries,
Characterized in that, also include：Lithium battery voltage detection control module, lithium battery break-make control module, charging voltage modulation module
With solar panel output voltage control module；The lithium battery group voltage detecting control module respectively with serial lithium battery
Group, lithium battery break-make control module and the electrical connection of charging voltage modulation module, the lithium battery break-make control module is also with connecting
Lithium battery group electrically connects, and the charging voltage modulation module also electrically connects with solar panel output voltage control module, institute
Solar panel output voltage control module is stated also to electrically connect with solar panel.
2. solar street light charge and discharge balancing system according to claim 1, it is characterised in that the lithium battery break-make control
It is consistent with the lithium battery number of the series connection, electric with each single lithium in the serial lithium battery group respectively that molding block includes its number
The controlling switch of pond connection.
3. solar street light charge and discharge balancing system according to claim 2, it is characterised in that the controlling switch is single
Dpdt double-pole double-throw (DPDT) relay.
4. solar street light charge and discharge balancing system according to claim 2, it is characterised in that the serial lithium battery group
Also include its number it is consistent with the lithium battery number of the series connection, respectively with each single lithium battery in the serial lithium battery group simultaneously
The Schottky diode of connection.
5. solar street light charge and discharge balancing system according to claim 1, it is characterised in that the charging voltage modulation
Module includes a two-way voltage modulation circuit.
6. solar street light charge and discharge balancing system according to claim 5, it is characterised in that the voltage modulation circuit
It is one and the dutycycle of electric current is adjusted so as to controlling the BUCK circuits of power output, bi-directional voltage modulation circuit by HF switch
For a positive and a negative two voltage modulation circuits by the circuit after parallel connection, while can only be from it by diode control electric current
In a voltage modulation circuit pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720781447.6U CN207117217U (en) | 2017-06-30 | 2017-06-30 | A kind of solar street light charge and discharge balancing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720781447.6U CN207117217U (en) | 2017-06-30 | 2017-06-30 | A kind of solar street light charge and discharge balancing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207117217U true CN207117217U (en) | 2018-03-16 |
Family
ID=61586365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720781447.6U Expired - Fee Related CN207117217U (en) | 2017-06-30 | 2017-06-30 | A kind of solar street light charge and discharge balancing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207117217U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806093A (en) * | 2018-06-21 | 2018-11-13 | 宁波绿炻光伏科技有限公司 | The Software for Design of portable type solar energy system with password |
| CN110224474A (en) * | 2019-07-12 | 2019-09-10 | 重电智能科技扬州股份有限公司 | Photovoltaic cell system, street lamp and control method based on wireless equalization discharge |
-
2017
- 2017-06-30 CN CN201720781447.6U patent/CN207117217U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806093A (en) * | 2018-06-21 | 2018-11-13 | 宁波绿炻光伏科技有限公司 | The Software for Design of portable type solar energy system with password |
| CN110224474A (en) * | 2019-07-12 | 2019-09-10 | 重电智能科技扬州股份有限公司 | Photovoltaic cell system, street lamp and control method based on wireless equalization discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20180630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |