CN202513557U - Safety protecting system for energy storing device - Google Patents
Safety protecting system for energy storing device Download PDFInfo
- Publication number
- CN202513557U CN202513557U CN2012200493753U CN201220049375U CN202513557U CN 202513557 U CN202513557 U CN 202513557U CN 2012200493753 U CN2012200493753 U CN 2012200493753U CN 201220049375 U CN201220049375 U CN 201220049375U CN 202513557 U CN202513557 U CN 202513557U
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- pcs
- energy storage
- interface
- battery pack
- pcs device
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a safety protecting system for an energy storing device. The energy storing device comprises a battery pack and a PCS device, wherein the PCS device is internally provided with an internal processor; the battery pack and the PCS device are connected with each other; overcurrent protection contacts of each safety protecting element are connected with an I/O interface of the PCS device, and the internal processor controls the output of the PCS device by acquiring an overcurrent signal of the I/O interface. The safety protecting system for the energy storing device has strong setting characteristic, can change the protection threshold value, priority level, and the like which are set by software according to needs, and can provide effective and reliable protection for the battery pack and the PCS device, thereby improving the safety of the system.
Description
Technical field
The utility model relates to energy storage device safeguard protection field, especially relates to a kind of safety system of energy storage device.
Background technology
Energy storage is an important link during intelligent grid development effectively utilizes with new forms of energy, and energy storage device can be safely, stablize, reliability service is vital.Novel energy (wind-powered electricity generation, photovoltaic) electricity generation grid-connecting and the problem of utilizing receive people's attention deeply, because of the construction project of wind energy turbine set, optical electric field in recent years occurs again and again, and really are incorporated into the power networks and are utilized seldom.In the application of energy-storage system now, lack the energy-storage system of stable, safety, reliability service.
Chinese patent Granted publication number: CN202121303U discloses a kind of lithium ion battery group safety guard January 18 2012 Granted publication day, belongs to security appliance resist technology field.This lithium ion battery group safety guard; Comprise at least two group lithium ion batteries; Said lithium ion battery group connects one and has the charging and discharging protection device of protecting battery charging and discharging; Said charging and discharging protection device is made up of overcharge protection circuit and over-discharge protection circuit, and overcharge protection circuit also is in series with current foldback circuit, and over-discharge protection circuit also is in series with the high temperature protection circuit.This utility model has the characteristics in the useful life of effective raising battery pack.Weak point is that function singleness can only be protected battery pack.
The utility model content
The utility model is the deficiency for the function singleness that overcomes prior art, and a kind of safety guard of energy-storage system is provided.
To achieve these goals, the utility model adopts following technical scheme:
A kind of safety system of energy storage device, said energy storage device comprise battery pack, PCS device, it is characterized in that, are provided with internal processor in the said PCS device; Battery pack is connected with the PCS device; The overcurrent protection contact of each safeguard protection element is connected to the I/O interface of PCS device, and internal processor is controlled the output of PCS device through the over-current signal of gathering the I/O interface.
The utility model is on energy storage device, to be provided with safety guard, through the control and the operation of software and hardware, accomplishes the safeguard protection to energy storage device.
Battery pack is used to store the electric energy of wind, light generating.The PCS device is used for that the direct current that battery pack stores is transformed to alternating current and is connected to the grid.When battery voltage was on the low side, the PCS device was used for that alternating current is transformed into direct current and gives batteries charging.When over-current signal occurring in the battery set charge/discharge process, over-current signal flows to the I/O interface, and internal processor collects over-current signal, and the PCS device is broken off, thereby cut off main loop circuit, has guaranteed the safety of battery pack, PCS parts.
As preferably, said overcurrent protection contact is a closed type, is connected to the I/O interface of PCS device after each overcurrent protection contact series connection.This connected mode is simple and convenient.
As preferably, said protection component comprises the batteries management system and the contactor of air switch, fuse, battery pack.Air switch, fuse, contactor are located at positions different in the major loop, are used for the diverse location in loop is carried out overcurrent protection.Batteries management system is used for battery is carried out overcurrent protection.
As preferably, said PCS device comprises DC converter and two-way inverter, and DC converter is connected with two-way inverter.DC converter is used for voltage is carried out conversion.Two-way inverter is used for direct current converted into to exchange being incorporated into the power networks, and converts the interchange of electrical network to function that direct current is a batteries charging.
As preferably, be provided with air switch and fuse between said battery pack and the PCS device.
As preferably, comprise contactor and the high-power switch tube that is used to realize direct current and alternating-current bidirectional conversion in the said PCS device; Said internal processor carries out signal respectively with high-power switch tube and is connected.High-power switch tube is 6 groups of IGBT high-power switch tubes.After the signal that the protection of air switch, fuse, BMS, contactor, inverter is got an electric shock is connected; Be connected to the I/O input port of PCS device; Internal processor carries out real-time sampling and logical operation to the signal of I/O interface, need to judge whether open circuit protection.
When the needs open circuit protection, internal processor turn-offs high-power switch tube, and this moment, the battery pack output loop was in off-state.
As preferably, the I/O interface of PCS device comprises the I/O interface of DC converter and the I/O interface of two-way inverter.The I/O interface of DC converter and the I/O interface of two-way inverter are used for inserting respectively the over-current signal of overcurrent protection contact.
As preferably, battery pack is the lithium battery group.The lithium battery group has the operating voltage height, energy density is big, self-discharge rate is low, memory-less effect and the little advantage of volume.
Therefore, the utlity model has following beneficial effect: (1) property set is strong, can change software as required and set protection threshold values, priority etc.; (2) can provide effectively battery pack and PCS device, reliable protection, the fail safe that has improved system.
Description of drawings
Fig. 1 is that a kind of equipment of the utility model connects sketch map.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further description.
Embodiment as shown in Figure 1 is a kind of safety system of energy storage device, and energy storage device comprises battery pack, PCS device, is provided with internal processor in the PCS device; Battery pack is connected with the PCS device; The overcurrent protection contact of each safeguard protection element is connected to the I/O interface of PCS device, and internal processor is controlled opening of PCS device through the over-current signal of gathering the I/O interface and interrupted.The overcurrent protection contact is a closed type, is connected to the I/O interface of PCS device after each overcurrent protection contact series connection.Protection component comprises the batteries management system and the contactor of air switch, fuse, battery pack.The PCS device comprises DC converter and two-way inverter, and DC converter is connected with two-way inverter.Be provided with air switch and fuse between battery pack and the PCS device.Comprise contactor and the high-power switch tube that is used to realize direct current and alternating-current bidirectional conversion in the PCS device; Internal processor is connected respectively with high-power switch tube.The I/O interface of PCS device comprises that the I/O interface of DC converter and the I/O interface battery pack of two-way inverter are the lithium battery group.
Internal processor carries out real-time sampling and logical operation to the I/O interface signal, need to judge whether open circuit protection.When the needs open circuit protection, internal processor turn-offs 6 groups of IGBT high-power switch tubes, and this moment, the battery pack output loop was in off-state.
Claims (8)
1. the safety system of an energy storage device, said energy storage device comprises battery pack, PCS device, it is characterized in that, is provided with internal processor in the said PCS device; Battery pack is connected with the PCS device; The overcurrent protection contact of each safeguard protection element is connected to the I/O interface of PCS device, and internal processor is controlled the output of PCS device through the over-current signal of gathering the I/O interface.
2. the safety system of energy storage device according to claim 1 is characterized in that, said overcurrent protection contact is a closed type, is connected to the I/O interface of PCS device after each overcurrent protection contact series connection.
3. the safety system of energy storage device according to claim 1 is characterized in that, said protection component comprises the batteries management system and the contactor of air switch, fuse, battery pack.
4. the safety system of energy storage device according to claim 1 is characterized in that, said PCS device comprises DC converter and two-way inverter, and DC converter is connected with two-way inverter.
5. the safety system of energy storage device according to claim 1 is characterized in that, is provided with air switch and fuse between said battery pack and the PCS device.
6. the safety system of energy storage device according to claim 1 is characterized in that, comprises contactor and the high-power switch tube that is used to realize direct current and alternating-current bidirectional conversion in the said PCS device; Said internal processor carries out signal respectively with high-power switch tube and is connected.
7. according to the safety system of claim 1 or 2 or 3 or 4 or 5 or 6 described energy storage devices, it is characterized in that the I/O interface of PCS device comprises the I/O interface of DC converter and the I/O interface of two-way inverter.
8. according to the safety system of claim 1 or 2 or 3 or 4 or 5 or 6 described energy storage devices, it is characterized in that battery pack is the lithium battery group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200493753U CN202513557U (en) | 2012-02-16 | 2012-02-16 | Safety protecting system for energy storing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200493753U CN202513557U (en) | 2012-02-16 | 2012-02-16 | Safety protecting system for energy storing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513557U true CN202513557U (en) | 2012-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200493753U Expired - Fee Related CN202513557U (en) | 2012-02-16 | 2012-02-16 | Safety protecting system for energy storing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202513557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208778A (en) * | 2013-03-28 | 2013-07-17 | 浙江大学 | Method for protecting high-capacity energy storage system |
-
2012
- 2012-02-16 CN CN2012200493753U patent/CN202513557U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208778A (en) * | 2013-03-28 | 2013-07-17 | 浙江大学 | Method for protecting high-capacity energy storage system |
| CN103208778B (en) * | 2013-03-28 | 2015-12-23 | 浙江大学 | A kind of guard method for Large Copacity energy-storage system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20190216 |