CN205509569U - Photovoltaic basic station is with lithium cell reserve electrical power generating system - Google Patents

Photovoltaic basic station is with lithium cell reserve electrical power generating system Download PDF

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Publication number
CN205509569U
CN205509569U CN201620188517.2U CN201620188517U CN205509569U CN 205509569 U CN205509569 U CN 205509569U CN 201620188517 U CN201620188517 U CN 201620188517U CN 205509569 U CN205509569 U CN 205509569U
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China
Prior art keywords
battery
base station
backup power
power system
lithium battery
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CN201620188517.2U
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李艳杰
王迎迎
陈海燕
李延涛
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China Lithium Battery Technology Co Ltd
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China Aviation Lithium Battery Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The utility model relates to a charging and discharging circuit that photovoltaic basic station is with lithium cell reserve electrical power generating system, this system include the group battery, are used for to detect the battery management system BMS of group battery information and be used for realizing the group battery charge -discharge, battery management system BMS control connection is used for controlling the switch of charging and discharging circuit break -make, and this system is still including the hot administrative unit that is used for keeping battery group temperature stable, hot administrative unit is connected with the dc bus that inserts the positive negative pole of group battery, hot administrative unit is including heating module and refrigerating module, battery management system BMS control connection heating module and refrigerating module. The utility model discloses a system makes in the basic station temperature of group battery suitable all the time, does not have under the condition of commercial power even in that the commercial power is unstable, still can guarantee suiting of in basic station temperature, the utility model discloses a system is applicable to the photovoltaic basic station that is in remote districts very much.

Description

A kind of photovoltaic base station lithium battery backup power system
Technical field
This utility model relates to photovoltaic base station backup power system, is specifically related to a kind of photovoltaic base station lithium battery backup power system.
Background technology
Traditional photovoltaic base station uses lead-acid battery, and the state of battery can only be detected by Switching Power Supply, and detection project only has set of cells integrality, does not has the information of cell.There is the biggest defect in this base station, one is the defect of lead-acid battery self, cycle life short increase battery altering frequency, and volume takies greatly space, base station, the efficiency for charge-discharge low waste energy, pollutes not environmentally, the most beneficially sustainable development;Two is the most complete Global Information only gathering battery system of system acquisition information, cannot quick failure judgement battery location when partial monosomy battery failure;Three is no data storage function, and historical data does not store and is difficult to quickly analyze the inducement causing battery failures, is unfavorable for that the later stage avoids fault inducement;Four is to be not carried out the communication with background monitoring system, and battery information can not realize quickly uploading backstage, is unfavorable for that system information monitors, and increases the work of patrol officer, is unfavorable for that equipment later maintenance uses.
Lithium iron battery compared with have for lead-acid battery use safety, overlong service life, without any heavy metal and rare metal, lightweight, volume is little, voltage platform is stable and memory-less effect.From 2009, three prefectures and cities of big operator gradually had and are applied in the communications industry by lithium iron battery.Within 2011, Henan company of China Mobile builds 200 experimental stations, the lithium iron battery bid that three big operators are taken the lead by each province and city simultaneously constantly occurs, within 2012, beginning extensive bid lithium iron battery back-up source is moved in Hebei, and within 2013, China Telecom starts centralized procurement, and within 2014, CHINAUNICOM starts centralized procurement.Using lithium iron battery to make back-up source and substitute use lead-acid battery to make back-up source is development trend from now on.
Patent documentation " a kind of communication discrete lithium battery back-up source " discloses a kind of lithium battery backup power system, control circuit is integrated by this backup power system with set of cells, and BMS driver element, diverter, catalyst, diode and display screen are integrated, although it is convenient for installation and maintenance, solve the defect of traditional lead acid batteries the most to a certain extent, but it does not accounts for the temperature impact on battery.Lithium iron battery performance degradation under high and low temperature environment is very fast, this is accomplished by ensureing the suitable of battery local environment temperature by some modes, prevent cell performance decay situation faster, existing mode is to arrange heating module in backup power system, wherein heating module uses civil power to be powered, as patent documentation " a kind of backup battery " discloses a kind of backup battery considering variations in temperature, wherein set heating unit is powered by electric main just.And for photovoltaic base station, the abundant place of solar energy is typically in the remotest place, day and night temperature is bigger, civil power instability is even without civil power, ambient temperature in common air-conditioning cannot be used to ensure base station, so, in the case of not using civil power, how to ensure that suitable temperature is also a thorny difficult problem in base station.
Utility model content
This utility model provides a kind of photovoltaic base station lithium battery backup power system, to solve the problem that existing the system with back-up power source used battery uses civil power not to be suitable in the way of powering battery heating unit being in the unstable photovoltaic base station of remote location mains-supplied.
For solving above-mentioned technical problem, photovoltaic base station of the present utility model lithium battery backup power system includes set of cells, connect the dc bus of set of cells, for detecting the battery management system of battery pack information and for realizing the charge-discharge circuit of battery set charge/discharge, described set of cells is lithium iron battery group, it is characterized in that, this system also includes for keeping the stable thermal management unit of battery pack temperature, the described described thermal management unit of DC bus powered connection, described thermal management unit includes heating module and refrigeration module.
Described charge-discharge circuit includes charging contactor K3 and the electric discharge catalyst K4 being serially connected, a diode contrary with the charging contactor K3 sense of current in parallel on charging contactor K3, a diode contrary with the electric discharge catalyst K4 sense of current in parallel on electric discharge catalyst K4.
This system also includes that DC/DC changer, the input terminal 1 of described DC/DC changer connect battery anode and dc bus plus end;The input terminal 2 of described DC/DC changer controls switch by one and connects battery electrode and a diode connection dc bus negative terminal, the input terminal 2 of described DC/DC changer connects battery electrode also by charge-discharge circuit, and the outfan of described DC/DC changer connects battery management system power interface.
Described control switch includes hand switch K2 and relay switch K5.
A shutdown switch K1 it is also associated with between input terminal 1 and the battery anode of described DC/DC changer.
Described battery management system controls to connect described heating module and refrigeration module.
It is serially connected with fuse between described set of cells and charge-discharge circuit.
It is serially connected with diverter between described set of cells and fuse.
Described photovoltaic base station lithium battery backup power system also includes display unit, and described display unit is connected with battery management system, is used for showing battery information.
Described photovoltaic base station lithium battery backup power system is provided with for the communication interface with monitoring Background communication.
The beneficial effects of the utility model are: this system is provided with heat management system, the temperature of set of cells can be controlled, make the temperature of set of cells in base station the most suitable, prevent performance degradation under battery high and low temperature environment more very fast, and thermal management unit is directly powered by set of cells or photovoltaic generation unit, in the case of civil power instability is even without civil power, still can ensure that the suitable of temperature in base station, system of the present utility model is highly suitable for being in the photovoltaic base station of remote districts.
The battery management system BMS of this system is connected to obtain the information of each cell with the both positive and negative polarity of each cell in set of cells, it is ensured that battery information gathers complete, the quick failure judgement battery location when partial monosomy battery failure.The control unit of simultaneity factor can realize Self-disconnecting function, prevents set of cells from crossing charge status, system can automatic shutdown, automatically restart, reliability is high, stable, it is adaptable to long-term unattended photovoltaic base station.
System of the present utility model is capable of the communication with background monitoring system, and battery information quickly uploads to backstage, beneficially system information monitoring, the beneficially maintenance in equipment later stage.
Set of cells in system of the present utility model uses ferric phosphate lithium cell as electrical source of power, thus reduces taking up room of system, increases system service life, shortens system maintenance number of times, environmental protection.
Accompanying drawing explanation
Fig. 1 is the backup power system block diagram of the present embodiment;
Fig. 2 is the backup power system electrical connection diagram of the present embodiment;
Fig. 3 is the heating system schematic diagram of the present embodiment;
In Fig. 1,1 is communication base station internal load, and 2 is heating unit, and 3 is photovoltaic generation unit, and 4 is refrigeration unit, and 5 is set of cells, and 6 is control unit, and 7 is storage device, and 8 is display screen;
In Fig. 2, K1 is shutdown switch, and K2 is activate switch, and K3 is charging contactor, and K4 is BMS Self-lock contactor for electric discharge catalyst, K5.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the technical solution of the utility model is further described in detail.
As shown in Figure 1, the system with back-up power source used battery of the present embodiment includes that this system includes set of cells, for measuring the battery management system BMS of battery pack information and for realizing the charge-discharge circuit of battery set charge/discharge, battery management system BMS controls the switch being connected to control charge-discharge circuit break-make, this system also includes for keeping the stable thermal management unit of battery pack temperature, add thermal management unit to be connected with the dc bus accessing set of cells both positive and negative polarity, add thermal management unit and include heating module and refrigeration module, battery management system BMS controls to connect heating module and refrigeration module.
The set of cells of the present embodiment includes battery module and battery standard subrack, and wherein, battery module is internally integrated silica gel heating device, battery gathers wire harness and quick connection port mouth.Depending on the number of battery standard subrack is according to cell number in set of cells, each battery standard subrack is provided with a quick connection port mouth.Quick connection port mouth can in the case of disconnecting load fast insert-pull, all there is fool proof measure each connectivity port.Battery management system BMS connects set of cells, is used for measuring each cell information in battery module.
The charge-discharge circuit of the present embodiment includes charging contactor K3 and the electric discharge catalyst K4 being serially connected, a diode contrary with the charging contactor K3 sense of current in parallel on charging contactor K3, a diode contrary with the electric discharge catalyst K4 sense of current in parallel on electric discharge catalyst K4.Battery management system BMS controls to connect charging contactor and electric discharge catalyst.Discharge and recharge can realize the conversion of zero propagation with mouth.
The thermal management unit being used for keeping battery pack temperature stable of this system includes heating unit and refrigeration unit, and wherein, heating unit includes that heater and switch, described refrigeration unit include on and off switch, refrigerating plant and temperature detecting module.By analyzing photovoltaic base station practical situation, formulating rational control mode in conjunction with lithium battery self performance (charging temperature does not allow too high or too low) makes thermal management unit rationally work, improve solar energy utilization ratio, reduce battery electric quantity consumption, extend the loaded work piece time.
Heating unit in the present embodiment is inherited and inside battery standard subrack, heater therein can be heating plate, resistance wire etc., and heating plate is between battery standard subrack, and the positive pole of each heating plate links together, and forms heating total negative;It is total the most just that the negative pole of heating plate is being joined together to form heating, is serially connected with one and adds thermorelay on the total negative connecting line of heating, and the contact adding thermorelay is normally opened contact, when battery pack temperature is too low need to heat up time, closing this normally opened contact is set of cells heating.Temperature-detecting device can be set in heating unit, this temperature-detecting device is connected with battery management system, temperature information is sent to battery management system, when temperature is too high, battery management system controls to add thermorelay and disconnects stopping heating, when the temperature is too low, control to add thermorelay connection to heat.Certainly as other embodiments, it would however also be possible to employ timing heated, do not heat, heat at night.Refrigeration unit is preferably the preferable air-conditioning of refrigeration, certainly, it is possible to use cooling fan.The thermal management unit that adds of the present embodiment is connected to access on the dc bus of set of cells, when daytime is sunny, can be by for photovoltaic generating system DC bus powered, when evening or rainy weather to set of cells charging, during solar energy deficiency, can be by battery-powered.
This system also includes DC/DC changer, for battery voltage is converted to BMS required voltage, powers for BMS.The input terminal 1 of described DC/DC changer connects battery anode and dc bus plus end;The input terminal 2 of described DC/DC changer controls switch by one and connects battery electrode and a diode connection dc bus negative terminal, the input terminal 2 of described DC/DC changer connects battery electrode also by charge-discharge circuit, and the outfan of described DC/DC changer connects battery management system power interface.Wherein, control switch and include hand switch K2 and relay switch K5.It is also associated with a diode between input terminal 2 and the control switch of described DC/DC changer.
A shutdown switch K1 it is also associated with between input terminal 1 and the battery anode of the DC/DC changer of the present embodiment.Shutdown switch is a normally closed switch.The setting of above-mentioned activate switch and shutdown switch can form self-starting Self-disconnecting circuit between Li-ion batteries piles and control unit, and protection Li-ion batteries piles is only put, and reduces manual maintenance cost.
It is serially connected with fuse between set of cells and the charge-discharge circuit of the present embodiment.
Being serially connected with diverter between set of cells and the fuse of the present embodiment, described diverter connects battery management system.Battery management system obtains battery pack current information by diverter.
The control unit of the present embodiment also includes display unit, and described display unit is connected with battery management system, is used for showing battery information.
The control unit of the present embodiment is provided with for the communication interface with monitoring Background communication, battery information is quickly uploaded backstage, beneficially system information monitoring, reduces the work of patrol officer, beneficially equipment later maintenance and use
The control unit of the present embodiment and set of cells are integrated in a battery standard subrack, add thermal management unit and set of cells is also integrated in a battery standard subrack.
The set of cells of the present embodiment is ferric phosphate lithium cell or lithium battery.
The operation principle of the present embodiment backup power system is as follows:
It is abundant that the environment of photovoltaic base station is usually daytime solar energy, a part of powering load, and a part charges the battery, and base station night, such as rainy weather, battery capacity was it is generally required to for load work in continuous 7 days by battery powering load.Normal work, starts first and closes K2, and battery management system (being called for short BMS) powers on, and after self-inspection is normal, closes K3, K4, K5, system starts;During deenergization system, disconnect shutdown switch K1, BMS power-off, system stalls.
Integrating control unit mainly includes BMS, catalyst, diode, switch etc., when battery failure, as overcharged, cross put, high temperature, low temperature etc., BMS control corresponding catalyst disconnect, it is to avoid battery abuse.Activate switch K2 is automatic reset switch, after system is opened, automatically disconnects, when set of cells is crossed and put, first BMS disconnects K4, and whole power loop quits work, BMS and DC/DC still consumes battery electric quantity, then BMS closedown own power source i.e. disconnects K5, prevents set of cells from continuing to put, when extraneous power supply charges the battery, activate BMS, closing K4, K5, system starts to charge normal, thus realizes the Self-disconnecting of whole system.BMS system can provide external communication, it is achieved with Switching Power Supply, rotating ring system communication, real-time uploads of battery information.
Whole power-supply system is integrated in interior of equipment cabinet, and rack has insulation effect, point battery case and electric box in cabinet, uses quick connector to realize power and is connected and communicate with connecting, it is simple to back-up source Fast Installation and maintenance between case.Thermal management unit is integrated in cabinet, the charging temperature scope of lithium iron battery is less (0~45 DEG C), discharge temp scope is relatively big (-20~55 DEG C), photovoltaic base station daytime is when ambient temperature reaches a high temperature marginal value and battery charging, open cabinet air conditioner and reduce in-cabinet temperature, when in-cabinet temperature drops to Appropriate, air-conditioning is automatically switched off, when ambient temperature drops to low temperature marginal value and battery charging, Guan Bi adds thermorelay, set of cells is heated, when battery temperature is raised to Appropriate, disconnects and add thermorelay.
Battery management system can be provided with display unit and storage device, by communicating with BMS, battery information is shown on a display screen, battery information is stored on a storage device simultaneously, storage device is USB interface, quickly information can be derived by computer, and EXCEL form during all data, beneficially data analysis.

Claims (10)

1. a photovoltaic base station lithium battery backup power system, this system includes set of cells, connect the dc bus of set of cells, for measuring the battery management system of battery pack information and for realizing the charge-discharge circuit of battery set charge/discharge, described set of cells is lithium iron battery group, it is characterised in that this system also includes for keeping the stable thermal management unit of battery pack temperature, the described described thermal management unit of DC bus powered connection, described thermal management unit includes heating module and refrigeration module.
Photovoltaic base station lithium battery backup power system the most according to claim 1, it is characterized in that, described charge-discharge circuit includes charging contactor K3 and the electric discharge catalyst K4 being serially connected, a diode contrary with the charging contactor K3 sense of current in parallel on charging contactor K3, a diode contrary with the electric discharge catalyst K4 sense of current in parallel on electric discharge catalyst K4.
Photovoltaic base station lithium battery backup power system the most according to claim 1, it is characterised in that this system also includes that DC/DC changer, the input terminal 1 of described DC/DC changer connect battery anode and dc bus plus end;The input terminal 2 of described DC/DC changer controls switch by one and connects battery electrode and a diode connection dc bus negative terminal, the input terminal 2 of described DC/DC changer connects battery electrode also by charge-discharge circuit, and the outfan of described DC/DC changer connects battery management system power interface.
Photovoltaic base station lithium battery backup power system the most according to claim 3, it is characterised in that described control switch includes hand switch K2 and relay switch K5.
Photovoltaic base station lithium battery backup power system the most according to claim 4, it is characterised in that be also associated with a shutdown switch K1 between input terminal 1 and the battery anode of described DC/DC changer.
Photovoltaic base station lithium battery backup power system the most according to claim 1, it is characterised in that described battery management system controls to connect described heating module and refrigeration module.
Photovoltaic base station lithium battery backup power system the most according to claim 1, it is characterised in that be serially connected with fuse between described set of cells and charge-discharge circuit.
Photovoltaic base station lithium battery backup power system the most according to claim 1, it is characterised in that be serially connected with diverter between described set of cells and fuse.
Photovoltaic base station lithium battery backup power system the most according to claim 1, it is characterised in that described photovoltaic base station lithium battery backup power system also includes display unit, and described display unit is connected with battery management system, is used for showing battery information.
10. according to claim 1-9 arbitrary described photovoltaic base station lithium battery backup power system, it is characterised in that described photovoltaic base station lithium battery backup power system is provided with for the communication interface with monitoring Background communication.
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106532872A (en) * 2016-12-31 2017-03-22 刘杰 Matrix control method for multiple battery packs in communication base station
CN107452995A (en) * 2017-08-21 2017-12-08 上海空间电源研究所 Space high-voltage batteries information management bus group network system based on CAN
CN107994669A (en) * 2017-11-30 2018-05-04 中国电子科技集团公司第四十八研究所 A kind of missile-borne microsatellite energy control system
CN108258754A (en) * 2017-12-29 2018-07-06 惠州市蓝微新源技术有限公司 A kind of charge and discharge quick seamless handoff system
CN109742825A (en) * 2019-02-27 2019-05-10 广州宝狮新能源有限公司 A kind of UPS and lithium battery group integral system
CN110244596A (en) * 2019-04-30 2019-09-17 成都科鑫电气有限公司 A kind of energy bag data intelligent acquisition analysis method
CN110774937A (en) * 2019-10-30 2020-02-11 电子科技大学 Vehicle-mounted centralized power distribution type parallel battery management system
CN111169287A (en) * 2019-09-30 2020-05-19 双登集团股份有限公司 Special vehicle lithium battery electrical control system and working mode thereof
CN112087017A (en) * 2020-07-27 2020-12-15 国网综合能源服务集团有限公司 Transformer substation direct-current power supply battery management system and battery management method thereof
CN112201867A (en) * 2020-09-29 2021-01-08 深圳悠典能源科技有限公司 All-weather intelligent military vehicle-mounted energy storage system
US11462917B1 (en) 2021-12-10 2022-10-04 NDSL, Inc. Methods, systems, and devices for maintenance and optimization of battery cabinets
CN115899807A (en) * 2023-01-13 2023-04-04 宁波斯凯蒙太阳能股份有限公司 Photovoltaic heat pump energy storage integrated intelligent temperature control system and control method thereof
US11689048B1 (en) 2021-12-10 2023-06-27 NDSL, Inc. Methods, systems, and devices for maintenance and optimization of battery cabinets

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106532872A (en) * 2016-12-31 2017-03-22 刘杰 Matrix control method for multiple battery packs in communication base station
CN107452995A (en) * 2017-08-21 2017-12-08 上海空间电源研究所 Space high-voltage batteries information management bus group network system based on CAN
CN107452995B (en) * 2017-08-21 2020-01-31 上海空间电源研究所 CAN bus-based space high-voltage storage battery information management bus networking system
CN107994669A (en) * 2017-11-30 2018-05-04 中国电子科技集团公司第四十八研究所 A kind of missile-borne microsatellite energy control system
CN108258754A (en) * 2017-12-29 2018-07-06 惠州市蓝微新源技术有限公司 A kind of charge and discharge quick seamless handoff system
CN109742825A (en) * 2019-02-27 2019-05-10 广州宝狮新能源有限公司 A kind of UPS and lithium battery group integral system
CN110244596A (en) * 2019-04-30 2019-09-17 成都科鑫电气有限公司 A kind of energy bag data intelligent acquisition analysis method
CN111169287A (en) * 2019-09-30 2020-05-19 双登集团股份有限公司 Special vehicle lithium battery electrical control system and working mode thereof
CN110774937A (en) * 2019-10-30 2020-02-11 电子科技大学 Vehicle-mounted centralized power distribution type parallel battery management system
CN110774937B (en) * 2019-10-30 2022-11-08 电子科技大学 Vehicle-mounted centralized power distribution type parallel battery management system
CN112087017A (en) * 2020-07-27 2020-12-15 国网综合能源服务集团有限公司 Transformer substation direct-current power supply battery management system and battery management method thereof
CN112087017B (en) * 2020-07-27 2024-04-02 国网综合能源服务集团有限公司 Battery management system and battery management method for direct-current power supply of transformer substation
CN112201867A (en) * 2020-09-29 2021-01-08 深圳悠典能源科技有限公司 All-weather intelligent military vehicle-mounted energy storage system
US11462917B1 (en) 2021-12-10 2022-10-04 NDSL, Inc. Methods, systems, and devices for maintenance and optimization of battery cabinets
US11689048B1 (en) 2021-12-10 2023-06-27 NDSL, Inc. Methods, systems, and devices for maintenance and optimization of battery cabinets
CN115899807A (en) * 2023-01-13 2023-04-04 宁波斯凯蒙太阳能股份有限公司 Photovoltaic heat pump energy storage integrated intelligent temperature control system and control method thereof

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Effective date of registration: 20220110

Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province

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Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd.

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