CN205178602U - Online energy storage system's control of charge and discharge circuit - Google Patents
Online energy storage system's control of charge and discharge circuit Download PDFInfo
- Publication number
- CN205178602U CN205178602U CN201521065060.8U CN201521065060U CN205178602U CN 205178602 U CN205178602 U CN 205178602U CN 201521065060 U CN201521065060 U CN 201521065060U CN 205178602 U CN205178602 U CN 205178602U
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- Prior art keywords
- contactor
- diode
- direct current
- current contactor
- battery pack
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an online energy storage system's control of charge and discharge circuit, including a direct current contactor, the 2nd direct current contactor, group battery, first diode and second diode, a direct current contactor and the 2nd direct current contactor's the contact back of establishing ties, a termination charging source input and load incoming end, another termination group battery, the other end ground connection of group battery, a direct current contactor and the 2nd direct current contactor's coil meets charging control signal respectively and discharges control signal, first diode and second diode connect in parallel respectively on a direct current contactor and the 2nd direct current contactor. The utility model discloses, charging source end and load end are directly received together, and charging source is all the time for the load power supply, and when the load was too big, the power supply was attendd simultaneously to charging source and group battery, improves bearing force, and direct current contactor can frequently not move, makes its working life extension, and the group battery just absorbs extra energy in the circuit, has prolonged the life of group battery.
Description
Technical field
The utility model relates to charge-discharge control circuit, is specifically related to the charge-discharge control circuit of online energy-storage system.
Background technology
Extensive online energy-storage system is in the equal extensive application in each field.In electric energy storing system (such as electric automobile), the main equipment such as lithium battery and lead-acid battery that adopts realizes, and one of them core technology is that charging and discharging controls.
Because D.C. contactor can fast shut-off exchange and direct current major loop, and can action continually, there is the effect of low-voltage release guard simultaneously, so extensively adopt in the charging and discharging control circuit of battery apparatus.Fig. 1 is the charge-discharge control circuit of current a kind of conventional online energy-storage system, as shown in Figure 1, charge power supply (charger) and load (load) are connected to the positive pole of battery pack (BT1) respectively by D.C. contactor K1, K2, the minus earth of battery pack (BT1).What foregoing circuit adopted is the different mouth circuit that charge and discharge separates, the energy-storage system carried out when being applicable to charging and discharging difference.During charging, K1, K2 connect, and charge power supply and battery pack are connected, batteries charging, simultaneously powering load; When battery pack is full of electricity, K1 disconnects, only by battery pack powering load, when battery pack cross put time, K1 will close again, charge power supply to batteries charging and powering load, so repeatedly.This circuit, when load is excessive, K1 can be fragile because working frequently.
In view of this, be badly in need of improving the charge-discharge control circuit of online energy-storage system, make its load excessive require batteries charging and electric discharge carry out simultaneously time, D.C. contactor can not damage because of frequent movement.
Utility model content
Technical problem to be solved in the utility model be load excessive require batteries charging and electric discharge carry out simultaneously time, the problem that D.C. contactor can not damage because of frequent movement.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is the charge-discharge control circuit of online energy-storage system, comprises the first D.C. contactor, the second D.C. contactor, battery pack, the first diode and the second diode;
After described first D.C. contactor is connected with the contact of described second D.C. contactor, one termination charge power supply input and load incoming end, battery pack described in another termination, the other end ground connection of described battery pack, the coil of the first D.C. contactor and the second D.C. contactor connects charging control signal and discharge control signal respectively; Described first diode and the second diode are parallel on described first D.C. contactor and described second D.C. contactor respectively.
In such scheme, the moving contact of described second D.C. contactor connects the positive pole of battery pack, the positive pole of described first diode is connected with the moving contact of described first D.C. contactor, the negative pole of described first diode connects the fixed contact of described first D.C. contactor, the positive pole of described second diode connects the fixed contact of described second D.C. contactor, and the negative pole of described second diode connects the moving contact of described second D.C. contactor.
In such scheme, when described charge power supply is negative voltage, the moving contact of described second D.C. contactor connects the negative pole of battery pack, the positive pole of described first diode connects the fixed contact of described first D.C. contactor, the negative pole of described first diode connects the moving contact of described first D.C. contactor, the positive pole of described second diode connects the moving contact of described second D.C. contactor, and the negative pole of described second diode connects the fixed contact of described first D.C. contactor.
The utility model is directly received together the input of charge power supply (charging end) and load incoming end (load end), charge power supply is always load supplying, when load is excessive, charge power supply and battery pack participate in power supply simultaneously, improve load capacity, and D.C. contactor K1 can not frequent movement, makes its operating lifetime.This circuit topological structure is applied in energy-storage system, and battery pack just absorbs extra energy in battery pack, extends the useful life of battery pack.
Accompanying drawing explanation
Fig. 1 is the charge-discharge control circuit schematic diagram of existing energy-storage system;
Embodiment one schematic diagram that Fig. 2 provides for the utility model;
Embodiment two schematic diagram that Fig. 3 provides for the utility model.
Embodiment
The utility model provides a kind of charge-discharge control circuit of energy-storage system, and in charge and discharge process, charge power supply remains powers to load, and contactor can not frequent movement, and its working life is increased greatly.This circuit topological structure is applied in energy-storage system, and battery pack just absorbs extra energy in battery pack, extends the useful life of battery pack, and in addition during overload, battery pack can participate in power supply simultaneously, improves load capacity.Below in conjunction with embodiment and Figure of description, the utility model is described in detail.
As shown in Figure 2, the charge-discharge control circuit that the charge power supply that this practicality newly provides adopts positive voltage to power, comprises the first D.C. contactor K1, the first diode D1, the second D.C. contactor K2, the second diode D2 and battery pack BT1.
After first D.C. contactor K1 connects with the contact of the second D.C. contactor K2, the positive pole of a termination charge power supply charger, the positive pole of another termination battery pack BT1, the minus earth of battery pack BT1.The coil of the first D.C. contactor K1 and the second D.C. contactor K2 connects charging control signal (charge-control+ and charge-control-) and discharge control signal (discharge-control+ and discharge-control-) respectively.First diode D1 is in parallel with the first D.C. contactor K1, second diode D2 is in parallel with the second D.C. contactor K2, the negative pole of the first diode D1 connects the fixed contact of contactor K1, the negative pole of the second diode D2 connects the moving contact of contactor K2, be connected with the moving contact of the first D.C. contactor K1 after first diode D1 and the positive pole of the second diode D2 are interconnected (namely the positive pole of the first diode D1 and the second diode D2 interconnected after, be connected with the line between the first D.C. contactor K1 moving contact and the second D.C. contactor K2 fixed contact).
Operation principle of the present utility model is as follows:
Charge power supply is powered directly to load and battery pack BT1, when load normally works, is powered by charge power supply, and battery pack BT1 charges and do not participate in powering to the load.
When battery pack BT1 needs charging, charging control signal and discharge control signal control K1, K2 close, battery pack BT1 is connected to charge power supply, and battery pack BT1 is in charged state, after battery pack BT1 is full of, K1 disconnects by the first D.C. contactor, second D.C. contactor K2 remains closed, and battery pack BT1 charges stopping, and now battery pack BT1 keeps to load by D1 power supply capacity, when load is excessive, can be powered by battery pack BT1 and charge power supply simultaneously.
When battery pack BT1 cross put time, discharge control signal controls the second D.C. contactor K2 and disconnects, and the first D.C. contactor K1 remains closed, and battery pack BT1 stops electric discharge, and electric current will flow in battery pack BT1 through the second diode D2, and now battery pack BT1 starts charging.
The sharpest edges of this circuit are in battery pack BT1 charge and discharge process, and its sharpest edges are in charge and discharge process, and charge power supply remains powers to load, and contactor can not frequent movement, and its working life is increased greatly.This circuit topological structure is applied in energy-storage system, and battery pack just absorbs extra energy in battery pack, extends the useful life of battery pack, and in addition during overload, battery pack can participate in power supply simultaneously, improves load capacity.
When charge power supply surprisingly increases electric current because load is excessive, charging control signal can also control the first D.C. contactor K1 and disconnect, and protection battery pack BT1, extends the useful life of battery pack.
Fig. 3 is another kind of embodiment schematic diagram of the present utility model, is that charge power supply adopts negative voltage to power with the difference of enforcement one.Now, the polarity of first, second diode D1, D2 is contrary with the connection of first, second diode D1, D2 in embodiment one, first diode D1 is connected with the moving contact of the first D.C. contactor K1 afterwards with the negative pole of the second diode D2 is interconnected, and the connection of its operation principle and other elements is substantially identical with the embodiment one shown in Fig. 2.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change made under enlightenment of the present utility model, and every have identical or close technical scheme with the utility model, all falls within protection range of the present utility model.
Claims (3)
1. the charge-discharge control circuit of online energy-storage system, comprises the first D.C. contactor, the second D.C. contactor and battery pack, it is characterized in that: also comprise the first diode and the second diode;
After described first D.C. contactor is connected with the contact of described second D.C. contactor, one termination charge power supply input and load incoming end, battery pack described in another termination, the other end ground connection of described battery pack, the coil of the first D.C. contactor and the second D.C. contactor connects charging control signal and discharge control signal respectively; Described first diode and the second diode are parallel on described first D.C. contactor and described second D.C. contactor respectively.
2. the charge-discharge control circuit of online energy-storage system as claimed in claim 1, it is characterized in that, the moving contact of described second D.C. contactor connects the positive pole of battery pack, the positive pole of described first diode is connected with the moving contact of described first D.C. contactor, the negative pole of described first diode connects the fixed contact of described first D.C. contactor, the positive pole of described second diode connects the fixed contact of described second D.C. contactor, and the negative pole of described second diode connects the moving contact of described second D.C. contactor.
3. the charge-discharge control circuit of online energy-storage system as claimed in claim 1, it is characterized in that, when described charge power supply is negative voltage, the moving contact of described second D.C. contactor connects the negative pole of battery pack, the positive pole of described first diode connects the fixed contact of described first D.C. contactor, the negative pole of described first diode connects the moving contact of described first D.C. contactor, the positive pole of described second diode connects the moving contact of described second D.C. contactor, and the negative pole of described second diode connects the fixed contact of described first D.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065060.8U CN205178602U (en) | 2015-12-18 | 2015-12-18 | Online energy storage system's control of charge and discharge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065060.8U CN205178602U (en) | 2015-12-18 | 2015-12-18 | Online energy storage system's control of charge and discharge circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205178602U true CN205178602U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521065060.8U Expired - Fee Related CN205178602U (en) | 2015-12-18 | 2015-12-18 | Online energy storage system's control of charge and discharge circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205178602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928809A (en) * | 2021-04-23 | 2021-06-08 | 阳光电源股份有限公司 | Power supply device, control method and system |
| CN113937850A (en) * | 2021-09-30 | 2022-01-14 | 秦皇岛远舟工业气体有限公司 | Contactor cut-off protection device and method for marine battery system |
-
2015
- 2015-12-18 CN CN201521065060.8U patent/CN205178602U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928809A (en) * | 2021-04-23 | 2021-06-08 | 阳光电源股份有限公司 | Power supply device, control method and system |
| CN112928809B (en) * | 2021-04-23 | 2024-05-14 | 阳光电源股份有限公司 | Power supply device, control method and system |
| CN113937850A (en) * | 2021-09-30 | 2022-01-14 | 秦皇岛远舟工业气体有限公司 | Contactor cut-off protection device and method for marine battery system |
| CN113937850B (en) * | 2021-09-30 | 2023-08-18 | 秦皇岛远舟工业气体有限公司 | Contactor cut-off protection device and method for marine battery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jiashen Inventor after: Sun Dongsheng Inventor after: Wang Hongpeng Inventor after: Kang Jian Inventor before: Zhang Jiashen |
|
| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20181218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |