CN210927210U - Emergency power supply system based on echelon power storage battery - Google Patents
Emergency power supply system based on echelon power storage battery Download PDFInfo
- Publication number
- CN210927210U CN210927210U CN201921172083.7U CN201921172083U CN210927210U CN 210927210 U CN210927210 U CN 210927210U CN 201921172083 U CN201921172083 U CN 201921172083U CN 210927210 U CN210927210 U CN 210927210U
- Authority
- CN
- China
- Prior art keywords
- battery
- power supply
- contactor
- power
- energy storage
- 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.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an emergency power supply system based on echelon power battery, including commercial power and load, still include circuit breaker F, contactor K, energy storage converter and battery, the battery is the power battery of electric automobile retirement, the commercial power is connected with the load after circuit breaker F, contactor K in proper order, draws forth wiring and energy storage converter's interchange between load and contactor K and surveys and be connected, energy storage converter's direct current side is connected with the battery. The utility model has the advantages that: the emergency power supply system is realized by adopting the retired power battery of the electric automobile, so that the power storage battery of the electric automobile is used to the maximum extent, waste is avoided, the life cycle of the power storage battery is prolonged, and solid waste discharge is reduced; the energy storage requirement of the emergency power supply is met while the cost of the emergency power supply is saved.
Description
Technical Field
The invention relates to the field of recycling of retired power batteries, in particular to an emergency power supply system based on a echelon power battery.
Background
The service life of the power storage battery is regulated to be 1000 times according to national standards, the discharge capacity is not lower than 80% of the initial capacity, the power storage battery is not used for the electric automobile when the capacity is lower than 80%, the power storage battery needs to be decommissioned from the electric automobile, and if the decommissioned power storage battery is not properly treated, a plurality of problems such as potential safety hazards, environmental pollution, resource loss and the like are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an emergency power supply system and a control method based on a echelon power storage battery, which are used for realizing an emergency power supply by adopting a retired power storage battery so as to utilize the retired power storage battery to the maximum extent.
In order to achieve the purpose, the invention adopts the technical scheme that: emergency power supply system based on echelon power storage battery includes commercial power and load, still includes circuit breaker F, contactor K, energy storage converter and battery, the battery is the power storage battery of electric automobile retirement, the commercial power is connected with the load after circuit breaker F, contactor K in proper order, draws forth between load and contactor K wiring and energy storage converter's interchange side and is connected, energy storage converter's direct current side is connected with the battery.
The power supply system also comprises a controller, wherein the controller is connected with the energy storage converter and is used for controlling the working state of the energy storage converter; and the I/O of the controller is connected with the auxiliary contact and the coil of the contactor and is used for controlling the contactor to be closed and opened.
The controller is connected with the battery management system through the CAN interface and is used for acquiring data acquired by the battery management system.
The controller is connected with the touch screen, and the touch screen is used for man-machine data interaction.
The battery management system comprises a battery management unit, a voltage and current detection unit, a temperature acquisition unit and a system insulation degree acquisition unit, wherein the battery management unit is respectively connected with the voltage and current detection unit, the temperature acquisition unit and the system insulation degree acquisition unit.
The controller is connected with the mains supply signal acquisition unit and used for judging whether the mains supply is normal or not and controlling the working states of the contactor and the energy storage converter according to the mains supply signal acquisition unit.
The invention has the advantages that: the emergency power supply system is realized by adopting the retired power storage battery of the electric automobile, so that the power storage battery of the electric automobile is used to the maximum extent, waste is avoided, the life cycle of the power storage battery is prolonged, and solid waste discharge is reduced; the energy storage requirement of the emergency power supply is met while the cost of the emergency power supply is saved; the circuit has simple structure, convenient realization and clear control logic; the system has the advantages of automatically judging whether the commercial power is normal or not, quickly switching the emergency power supply mode, guaranteeing the normal operation of the load, automatically identifying the electric quantity of the energy storage carrier, quickly switching the charging mode and improving the reliability of the power supply system.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic diagram of the emergency power system of the present invention;
FIG. 2 is a diagram of a controller hardware configuration according to the present invention;
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
As shown in fig. 1, the emergency power supply system based on the echelon power storage battery comprises a mains supply, a load, a circuit breaker F, a contactor K, an energy storage converter and a storage battery, wherein the storage battery is the power storage battery for decommissioning the electric vehicle, the mains supply sequentially passes through the circuit breaker F and the contactor K and then is connected with the load, a wiring is led out between the load and the contactor K and is connected with an alternating current side of the energy storage converter, and a direct current side of the energy storage converter is connected with the storage battery.
The storage battery in this embodiment is echelon power storage battery, and for the power storage battery of electric automobile retirement, after power battery retires, its residual capacity still can the storage electric energy, this application utilizes this a design emergency power system, provides emergency power supply for important load to satisfy emergency load's power supply when having played power battery's recycle. In actual work, when the mains supply is normal, the load is supplied with power through the circuit breaker and the contactor, the energy storage converter is controlled to be in a rectification state, the mains supply is rectified and then becomes direct current to charge the storage battery, and when the mains supply is powered off, the energy storage converter is controlled to be in an inversion state, and the direct current output by the storage battery is inverted into alternating current to supply power to the load.
The working states of the energy storage converter and the contactor are controlled by the controller. The controller is connected with the energy storage converter and is used for controlling the working state of the energy storage converter: whether the inverter state or the rectifier state; the I/O of the controller is connected with the auxiliary contact and the coil of the contactor and is used for controlling the contactor to be closed and opened.
The charging of the storage battery or the discharging of the storage battery to the load is controlled by controlling the opening and closing of the contactor.
The controller adopts an embedded computer, and a Cortex-A8RISC processor is used as a main controller CPU for realizing the control of the working states of the energy storage converter and the contactor; or the control of the energy storage converter and the contactor is realized by directly adopting a minimum system of a 51 single chip microcomputer. The energy storage converter PCS comprises a bidirectional ACDC converter and a control unit, wherein the control unit is used for controlling the working state of the bidirectional ACDC converter to be an inversion state or a rectification state according to a control signal sent by a controller. The contactor adopts an alternating current contactor for realizing control, preventing switching and providing guarantee for the power supply safety of the system.
The controller is connected with the mains supply signal acquisition unit and used for judging whether the mains supply is normal or not and controlling the working states of the contactor and the energy storage converter according to the mains supply signal acquisition unit. The commercial power signal acquisition unit can adopt a current transformer and the like to acquire the working state of a power supply grid so as to judge whether commercial power is normally supplied by acquiring grid signals such as current, voltage and the like. When the power supply is normal, the controller outputs a control signal to the contactor to control the contactor to be closed; the controller outputs a control signal to the energy storage converter to control the energy storage converter to be in a rectification working state, the commercial power supplies power to the storage battery after passing through the circuit breaker, the contactor and the energy storage converter, and the commercial power supplies power to the load after passing through the circuit breaker and the contactor. When the power grid is judged to be out of power, the controller sends a control signal to the contactor to control the contactor to be disconnected; the controller sends a control signal to the energy storage converter to control the energy storage converter to be in an inversion working state, and the output direct current of the storage battery is inverted into alternating current to supply power to the load.
The controller is connected with the battery management system through the CAN interface and is used for acquiring data acquired by the battery management system. The battery management system comprises a battery management unit, a voltage and current detection unit, a temperature acquisition unit, a system insulation degree acquisition unit and an SOC acquisition unit, wherein the battery management unit is respectively connected with the voltage and current detection unit, the temperature acquisition unit, the system insulation degree acquisition unit and the SOC acquisition unit. For obtaining status information of the battery. The controller is connected with the touch screen, the touch screen is used as a human-computer interaction interface HMI for human-computer data interaction, and state information of the battery can be displayed.
The utility power is connected with the utility power circuit breaker, and the output of the utility power circuit breaker is connected with the input of the contactor, and when the utility power is normal, the utility power supplies power for the load and the echelon power storage battery. The output of the contactor is connected with the load and the input of the bidirectional converter, the switching of the contactor is connected with the mains supply, and meanwhile, the switching is prevented, so that the power supply safety of the system is guaranteed.
The energy storage converter integrates inversion, rectification and control, when the mains supply is normal, the mains supply is used as a current source to charge the echelon power storage battery, and when the mains supply is lost, the power supply is output in a mode of a voltage source as a load.
The controller is used as the brain of the system, measures and collects commercial power signals, judges whether commercial power is normal or not, controls the charge-discharge mode of the bidirectional converter in real time through data communication, reads data of the battery management system, and judges the battery power and the stability and the safety of the battery.
The battery management system monitors the total voltage, the total current, the SOC, the voltage of the single battery, the temperature of the single battery and the insulation degree of the system in real time, and the system has the function of automatically heating and cooling the battery, so that the utilization rate and the safety of the battery are guaranteed to the maximum extent. The system data and state are displayed by a HIM (touch screen), so that the system operation is convenient.
The echelon power storage battery used in the embodiment is the power storage battery for retirement of the electric automobile, and has the advantages that the power storage battery of the electric automobile is used to the maximum extent, the life cycle is prolonged, solid waste discharge is reduced, national policy guidance is met, and the green development concept is conformed.
The working principle of the application comprises that a system judges that commercial power is electrified, a commercial power supply load and a battery are charged, an energy storage converter is in a charging mode, a power storage battery with echelon is charged in a current source mode, and a commercial power breaker (F) and a contactor (K) are in a closed state; the capacity of the echelon power storage battery is judged, the echelon power storage battery is prevented from being overcharged, when the electric quantity of the echelon power storage battery is equal to a preset charging electric quantity threshold value (a threshold value corresponding to full charge), the bidirectional converter is in a standby state, when the electric quantity of the echelon power storage battery is smaller than the preset charging electric quantity threshold value, the bidirectional converter continues to charge the echelon power storage battery, and the mains supply ensures that a load supplies power; the system judges that the commercial power is lost, the controller releases the coil of the contactor, and the contactor (K) is in a disconnected state, so that the system is safe in power utilization, prevents switching and ensures power supply of important loads; the bidirectional converter is output by a voltage source and supplies power to a load; the capacity of the echelon power storage battery is judged, the echelon power storage battery is prevented from being over-discharged, when the electric quantity of the echelon power storage battery is equal to a preset discharging electric quantity threshold (the electric quantity value corresponding to emptying or approaching to emptying prevention), the bidirectional converter is in a standby state, and when the electric quantity of the echelon power storage battery is larger than the preset discharging electric quantity threshold, the system is continuously in a discharging mode;
compared with the prior art, the invention has the beneficial effects that: from the perspective of social and environmental benefits, the system can use the echelon power storage battery as an energy storage carrier, so that the power storage battery is used to the maximum extent, the life cycle of the power storage battery is prolonged, and the solid waste discharge is reduced; from the power management control technology perspective, the system possesses whether automatic judgement commercial power is normal, fast switch over emergent power supply mode, guarantee load normal operating, also can automatic identification energy storage carrier electric quantity simultaneously, fast switch over charging mode has improved power supply system's reliability. In addition, the method has the following three advantages:
1. on the premise of ensuring the system function, the hardware design is optimized, and the failure rate of the hardware is reduced, so that the reliability of the emergency power supply system hardware is realized.
2. The controller of the emergency power supply system adopts an embedded computer, and a Cortex-A8RISC processor is provided with interfaces such as RS232, RS485, CAN, Ethernet and the like, so that the emergency power supply system is suitable for long-time continuous operation, and cannot break down due to hardware aging to cause communication interruption; the operating system is based on Linux, real-time multitask and high in running speed, has concurrent acquisition and forwarding functions of various communication protocols (ModbusRET/TCP, TCP/IP and the like), CAN realize interconversion of communication networks such as serial ports (RS232/RS485), CAN, Ethernet and the like from the communication protocol level, performs real-time data interaction with other equipment, and simultaneously completes data summarizing work such as all measurement, control, protection, signals and the like on each network.
3. The echelon power storage battery used in the invention is the retired power storage battery of the electric automobile, and has the advantages that the power storage battery of the electric automobile is used to the maximum extent, the life cycle is prolonged, the solid waste discharge is reduced, the national policy guidance is met, and the green development concept is conformed.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (6)
1. Emergency power supply system based on echelon power storage battery, including commercial power and load, its characterized in that: still include circuit breaker F, contactor K, energy storage converter and battery, the battery is the power battery of electric automobile retirement, the commercial power is connected with the load after circuit breaker F, contactor K in proper order, draws the wiring between load and contactor K and is connected with energy storage converter's alternating current side, energy storage converter's direct current side is connected with the battery.
2. The echelon power storage battery-based emergency power supply system of claim 1, wherein: the power supply system also comprises a controller, wherein the controller is connected with the energy storage converter and is used for controlling the working state of the energy storage converter; and the output end of the controller is connected with the contactor and used for controlling the contactor to be closed and opened.
3. The echelon power storage battery-based emergency power supply system of claim 2, wherein: the controller is connected with the battery management system through the CAN interface and is used for acquiring data acquired by the battery management system.
4. The echelon power storage battery-based emergency power supply system of claim 2 or 3, wherein: the controller is connected with the touch screen, and the touch screen is used for man-machine data interaction.
5. The echelon power storage battery-based emergency power supply system of claim 3, wherein: the battery management system comprises a battery management unit, a voltage and current detection unit, a temperature acquisition unit and a system insulation degree acquisition unit, wherein the battery management unit is respectively connected with the voltage and current detection unit, the temperature acquisition unit and the system insulation degree acquisition unit.
6. The echelon power storage battery-based emergency power supply system of any of claims 2 or 3, wherein: the controller is connected with the mains supply signal acquisition unit and used for judging whether the mains supply is normal or not and controlling the working states of the contactor and the energy storage converter according to the mains supply signal acquisition unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921172083.7U CN210927210U (en) | 2019-07-24 | 2019-07-24 | Emergency power supply system based on echelon power storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921172083.7U CN210927210U (en) | 2019-07-24 | 2019-07-24 | Emergency power supply system based on echelon power storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210927210U true CN210927210U (en) | 2020-07-03 |
Family
ID=71367459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921172083.7U Active CN210927210U (en) | 2019-07-24 | 2019-07-24 | Emergency power supply system based on echelon power storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210927210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299757A (en) * | 2019-07-24 | 2019-10-01 | 安徽瑞赛克再生资源技术股份有限公司 | Emergency power system and control method based on echelon power accumulator |
-
2019
- 2019-07-24 CN CN201921172083.7U patent/CN210927210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299757A (en) * | 2019-07-24 | 2019-10-01 | 安徽瑞赛克再生资源技术股份有限公司 | Emergency power system and control method based on echelon power accumulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102496991B (en) | Backup lithium ion battery pack management method and management system thereof | |
| CN104158259B (en) | Based on the vehicle-mounted charge/discharge control method of V2G technology | |
| CN107196366B (en) | Storage battery online maintenance system based on three-port charging and discharging machine | |
| CN103475059B (en) | Multiple-channel output cooperation control electric automobile integrated charger supervisory control system and method | |
| CN205565901U (en) | Transformer substation storage cell organizes intelligent management system | |
| CN107749632B (en) | Energy storage system and control method thereof | |
| CN110712556A (en) | Energy storage charging pile capable of reserving electricity utilization and control method thereof | |
| CN109301920A (en) | Intelligent multichannel based on daisy chain bus uses battery manager, control method and its application with | |
| CN110299757A (en) | Emergency power system and control method based on echelon power accumulator | |
| CN109449944A (en) | Substation's two-way type DC power control system and method | |
| CN204243884U (en) | For the supply unit of distribution terminal | |
| CN210927210U (en) | Emergency power supply system based on echelon power storage battery | |
| CN202856460U (en) | Power supply intelligent monitoring device | |
| CN114204658A (en) | Storage battery pack online capacity checking system | |
| CN207304116U (en) | A kind of highly integrated charger controller and charger | |
| CN116513899A (en) | Elevator power supply control method, system, computer equipment and storage medium | |
| CN208369223U (en) | Backup battery energy storage discharge control system | |
| CN215813253U (en) | Remote control system for checking capacity of communication power supply storage battery | |
| CN203416044U (en) | Self-starting DC generator | |
| CN103560558B (en) | A kind of elevator power failure emergency power supply | |
| CN203301212U (en) | Dual standby saving type DC power supply system | |
| CN211744131U (en) | Intelligent uninterrupted power supply capable of achieving ultra-long standby | |
| CN214707221U (en) | Intelligent switching multi-power battery pack charging and discharging control system | |
| CN112124132B (en) | Non-vehicle charging and discharging system in grid-connected mode and isolated grid mode and charging pile | |
| CN211579691U (en) | Interactive UPS control panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211122 Address after: 241000 rooms A206 and 207, complex building, 38 Yinhu North Road, Wuhu District, China (Anhui) pilot Free Trade Zone, Wuhu City, Anhui Province Patentee after: WUHU WANJIANG INTELLECTUAL PROPERTY OPERATION CENTER Co.,Ltd. Address before: 241000 Anhui Wuhu economic and Technological Development Zone, Changchun Road, No. 8 generator transformer joint factory Patentee before: ANHUI RUISAIKE RENEWABLE RESOURCE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230407 Address after: 241200 Fanchang Economic Development Zone, Wuhu City, Anhui Province Patentee after: Anhui Jiaqi Energy Technology Co.,Ltd. Address before: 241000 rooms A206 and 207, complex building, 38 Yinhu North Road, Wuhu District, China (Anhui) pilot Free Trade Zone, Wuhu City, Anhui Province Patentee before: WUHU WANJIANG INTELLECTUAL PROPERTY OPERATION CENTER Co.,Ltd. |