CN203788024U - Lithium iron phosphate battery energy storage system - Google Patents

Lithium iron phosphate battery energy storage system Download PDF

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Publication number
CN203788024U
CN203788024U CN201420167967.4U CN201420167967U CN203788024U CN 203788024 U CN203788024 U CN 203788024U CN 201420167967 U CN201420167967 U CN 201420167967U CN 203788024 U CN203788024 U CN 203788024U
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China
Prior art keywords
battery
voltage
iron phosphate
lithium iron
group
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Withdrawn - After Issue
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CN201420167967.4U
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Chinese (zh)
Inventor
韩竞科
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Jiangsu Bo strong new energy Polytron Technologies Inc
Original Assignee
JIANGSU RICHPOWER NEW ENERGY TECHNOLOGY Co Ltd
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Abstract

The utility model provides a lithium iron phosphate battery energy storage system which is characterized in that a lithium iron phosphate storage battery pack comprises M*N single-body lithium iron phosphate storage batteries. The connecting mode of the M*N single-body lithium iron phosphate storage batteries is that M packs of battery strings, which are formed by N single-body lithium iron phosphate storage batteries via series connection, are connected in parallel. Each pack of the battery string is connected in series with an electronic switch, and each electronic switch is connected with a control module. A detection module is used for detecting current, voltage and temperature of each pack of the battery string respectively, and detection data are transmitted to a controller. According to the lithium iron phosphate battery energy storage system, one electronic switch is connected in series in each pack of the battery string to control on/off of each pack of the battery string, and battery overcharge and over-discharge are completely managed, i.e. when the single-body lithium iron phosphate storage battery or the whole pack of the battery string fails to work, another pack is switched on to operate continuously without influencing emergency or standby power use so that continuous operation of the system is guaranteed, and time for repairing or maintenance is also reserved.

Description

Ferric phosphate lithium cell energy-storage system
Technical field
The utility model relates to battery energy storage technical field, relates in particular to a kind of ferric phosphate lithium cell energy-storage system.
Background technology
At present, due to the advantage of ferric phosphate lithium cell self, the every field such as energy storage device, electric automobile, electric bicycle, electric tool have been widely used in, China and the lithium iron phosphate battery management system of Ye Youduojia manufacturer development abroad; Yet these battery management systems are all mainly used in the battery management of electric automobile, this has significantly different from the battery management system in the power-supply system of power plant, hydroelectric station and all kinds of transformer stations.But, ferric phosphate lithium cell is in the large voltage source system such as all kinds of transformer stations in use procedure, the problem that equilibrium while there will be battery cell quantity more and the coordination discharging and recharging are controlled, and and charger between Harmonic Control, be mainly manifested in because of strange ten thousand changes of extraneous load thousand, and the individual difference very easily producing in discharging and recharging use procedure between battery strings, all can cause whole system by physical switch, to cut off that whole system is forced to is out of service, be not suitable for standby electric demand, this 24 hours is being can not be received in uninterrupted operation environment such as IPG data center module, folding because of physical switch is hot line job simultaneously, is also very easy to cause damage and the useful life of himself, lithium battery is under floating charge state, if battery is inconsistent, single-unit overtension can occur, if only use physical switch, and the life-span of physical switch is limited, after inefficacy, easily cause fail safe accident to occur, so also cause in addition whole management system can not carry out short-circuit protection and reverse connecting protection.
Utility model content
The technical problems to be solved in the utility model is: owing to only there being the physical switch of controlling integral battery door group break-make in existing ferric phosphate lithium cell system, have easily because the difference of load or the individual difference of single battery are cut off whole electric power system, thereby affect the problem of the continuous service of load, the break-make that the utility model provides a kind of ferric phosphate lithium cell energy-storage system to control respectively every Battery pack string by the electronic switch of connecting in every Battery pack string solves the problems referred to above.
The utility model solves the technical scheme that its technical problem adopts: a kind of ferric phosphate lithium cell energy-storage system, comprise lithium iron phosphate storage battery group, detection module, control module, charge-discharge modules and relay switch, described lithium iron phosphate storage battery group is connected with relay switch with charge-discharge modules, described charge-discharge modules is connected with described control module with relay switch, described lithium iron phosphate storage battery group comprises M*N monomer lithium iron phosphate storage battery, the connected mode of described M*N monomer lithium iron phosphate storage battery is that M group is by the battery series-parallel connection of N monomer lithium iron phosphate storage battery series connection, the battery strings electronic switch of all connecting described in every group, described in each, electronic switch is connected with described control module, described detection module is for detecting respectively the electric current of battery strings described in every group, voltage and temperature also will detect transfer of data to controller, described in each, electronic switch is controlled respectively the break-make of every Battery pack string, during monomer lithium iron phosphate storage battery generation unusual condition in a certain Battery pack string, the described electronic switch of reaction can disconnect with the reaction speed of Millisecond at first, thereafter described relay switch is played to front end barrier, can not cause indivedual battery strings generation overvoltages because of the difference of load or the individual difference of monomer lithium iron phosphate storage battery, under-voltage, during the situation of overcurrent or excess temperature, cut off whole system, guaranteed the continuous service of load, in addition in the situation that monomer lithium iron phosphate storage battery number is identical, the monomer lithium iron phosphate storage battery of the series connection in every Battery pack string is just fewer, it is more careful to detect, control better effects if, and the quantity of electronic switch also can correspondingly increase.
Concrete, described control module comprises
MCU control chip, is connected with electronic switch described in each, and the detection data of electric current, voltage and the temperature of the every Battery pack string of reception & disposal are also controlled respectively the break-make of electronic switch described in each;
Memory, is connected with described MCU control chip, for storing the threshold values of the overvoltage of battery strings described in every group, under-voltage, overcurrent and excess temperature;
Display, be connected with described MCU control chip, for showing the threshold values contrast situation of the detection data of electric current, voltage and temperature of every Battery pack string and the detection data of electric current, voltage and the temperature of every Battery pack string and described overvoltage, under-voltage, overcurrent and excess temperature;
Alarm module, is connected with described MCU control chip, for sending alarm signal battery strings generation overvoltage described in any a group, under-voltage, overcurrent or the excess temperature in the situation that, notifies staff;
Communication module, be connected with described MCU control chip with external computer respectively, for described MCU control chip, the detection transfer of data of the electric current of described every Battery pack string, voltage and temperature be transferred to described MCU control chip to external computer and by the threshold values of the overvoltage of battery strings described in input by described computer every group, under-voltage, overcurrent and excess temperature.
As preferably, described detection module comprises M voltage detecting circuit, a M current detection circuit and M temperature sensing circuit, the input of a described M voltage detecting circuit is connected with battery strings described in every group respectively, output is connected with described MCU control chip, the input of a described M current detection circuit is connected with battery strings described in every group respectively, output is connected with described MCU control chip, the input of a described M temperature sensing circuit is connected with battery strings described in every group respectively, and output is connected with described MCU control chip.
As preferably, described electronic switch is IGBT or MOSET.
In order to control respectively discharging and recharging of described lithium iron phosphate storage battery group, described charge-discharge modules comprises charging control circuit and charge/discharge control circuit, is all connected with described MCU control chip;
Described MCU control chip is controlled described charging control circuit and charge/discharge control circuit and is stopped charging or electric discharge when battery strings generation overvoltage described in any a group, under-voltage, overcurrent or excess temperature.
As preferably, described alarm module comprises for sending the loud speaker of alarm sound and for the warning light of the flash of light that gives the alarm.
The beneficial effects of the utility model are, this ferric phosphate lithium cell energy-storage system electronic switch of connecting in every Battery pack string is controlled respectively the break-make of every Battery pack string, solved relay switch is depended on unduly, there is abnormal and unstablely all can processing by electronic switch of causing in any Battery pack string; In the time of can not causing the situation of indivedual battery strings generation overvoltages, under-voltage, overcurrent or excess temperature because of the difference of load or the individual difference of monomer lithium iron phosphate storage battery, cut off whole system, over-charging of battery is put into row management completely with crossing, when monomer lithium iron phosphate storage battery or a whole Battery pack string degenerate, can be switched to other one group and continue operation, not affecting emergent or standby electricity uses, guaranteed the continuous service of system, also given maintenance or safeguard the time that stayed; Also ensured in addition the safety at extreme situations such as short circuit, reversal connections, utilized electronic switch theoretic infinite life, guaranteed over-charging of battery or cross the reliability of putting; Carry out short-circuit protection and reverse connecting protection.
This ferric phosphate lithium cell energy-storage system is mainly structural innovation,, after each road electronic switch, loads the innovation of so a kind of structure of physical switch; This structure to prolong the life-span of system, electronic switch is theoretic infinite life, has avoided the damage to physical switch; This structure is applicable to energy storage field, especially lithium battery energy storage battery.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the optimum embodiment of the utility model ferric phosphate lithium cell energy-storage system.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model is only described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, the utility model provides a kind of ferric phosphate lithium cell energy-storage system, comprise lithium iron phosphate storage battery group, detection module, control module, charge-discharge modules and relay switch, lithium iron phosphate storage battery group is connected with relay switch with charge-discharge modules, lithium iron phosphate storage battery group comprises M*N monomer lithium iron phosphate storage battery, the connected mode of M*N monomer lithium iron phosphate storage battery is M group by the battery series-parallel connection of N monomer lithium iron phosphate storage battery series connection, every Battery pack string MOSET that all connects.
Control module comprises
MCU control chip, is connected with each MOSET, and the detection data of electric current, voltage and the temperature of the every Battery pack string of reception & disposal are also controlled respectively the break-make of each MOSET;
Relay switch is connected with MCU control chip, detection module comprises M voltage detecting circuit, M current detection circuit and M temperature sensing circuit, the input of M voltage detecting circuit connects with every Battery pack series winding respectively, output is connected with MCU control chip, the input of M current detection circuit connects with every Battery pack series winding respectively, output is connected with MCU control chip, the input of M temperature sensing circuit connects with every Battery pack series winding respectively, output is connected with MCU control chip, an above M voltage detecting circuit, M current detection circuit and M temperature sensing circuit detect respectively the electric current of every Battery pack string, voltage and temperature also will detect transfer of data to MCU control chip, charge-discharge modules comprises charging control circuit and charge/discharge control circuit, all be connected with MCU control chip, in any Battery pack string generation overvoltage, under-voltage, when overcurrent or excess temperature, control charging control circuit and charge/discharge control circuit and stop charging or electric discharge,
Memory, is connected with MCU control chip, for storing the threshold values of the overvoltage of every Battery pack string, under-voltage, overcurrent and excess temperature;
Display, is connected with MCU control chip, for showing the threshold values contrast situation of the detection data of electric current, voltage and temperature of every Battery pack string and the detection data of electric current, voltage and the temperature of every Battery pack string and overvoltage, under-voltage, overcurrent and excess temperature;
Alarm module, comprise for sending loud speaker and the warning light for giving the alarm and glistening of alarm sound, be connected with MCU control chip respectively, for sending alarm signal any Battery pack string generation overvoltage, under-voltage, overcurrent or the excess temperature in the situation that, notify staff;
Communication module, be connected with MCU control chip with external computer respectively, for MCU control chip, the detection transfer of data of the electric current of every Battery pack string, voltage and temperature be transferred to MCU control chip to external computer and by the threshold values of the overvoltage of every Battery pack string of inputting by computer, under-voltage, overcurrent and excess temperature.
The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this utility model technological thought, carry out various change and modification completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to claim scope.

Claims (6)

1. a ferric phosphate lithium cell energy-storage system, it is characterized in that: comprise lithium iron phosphate storage battery group, detection module, control module, charge-discharge modules and relay switch, described lithium iron phosphate storage battery group is connected with relay switch with charge-discharge modules, described charge-discharge modules is connected with described control module with relay switch, described lithium iron phosphate storage battery group comprises M*N monomer lithium iron phosphate storage battery, the connected mode of described M*N monomer lithium iron phosphate storage battery is that M group is by the battery series-parallel connection of N monomer lithium iron phosphate storage battery series connection, the battery strings electronic switch of all connecting described in every group, described in each, electronic switch is connected with described control module, described detection module is for detecting respectively the electric current of battery strings described in every group, voltage and temperature also will detect transfer of data to controller.
2. ferric phosphate lithium cell energy-storage system as claimed in claim 1, is characterized in that: described control module comprises
MCU control chip, is connected with electronic switch described in each, and the detection data of electric current, voltage and the temperature of the every Battery pack string of reception & disposal are also controlled respectively the break-make of electronic switch described in each;
Memory, is connected with described MCU control chip, for storing the threshold values of the overvoltage of battery strings described in every group, under-voltage, overcurrent and excess temperature;
Display, be connected with described MCU control chip, for showing the threshold values contrast situation of the detection data of electric current, voltage and temperature of every Battery pack string and the detection data of electric current, voltage and the temperature of every Battery pack string and described overvoltage, under-voltage, overcurrent and excess temperature;
Alarm module, is connected with described MCU control chip, for sending alarm signal battery strings generation overvoltage described in any a group, under-voltage, overcurrent or the excess temperature in the situation that, notifies staff;
Communication module, be connected with described MCU control chip with external computer respectively, for described MCU control chip, the detection transfer of data of the electric current of described every Battery pack string, voltage and temperature be transferred to described MCU control chip to external computer and by the threshold values of the overvoltage of battery strings described in input by described computer every group, under-voltage, overcurrent and excess temperature.
3. ferric phosphate lithium cell energy-storage system as claimed in claim 2, it is characterized in that: described detection module comprises M voltage detecting circuit, M current detection circuit and M temperature sensing circuit, the input of a described M voltage detecting circuit is connected with battery strings described in every group respectively, output is connected with described MCU control chip, the input of a described M current detection circuit is connected with battery strings described in every group respectively, output is connected with described MCU control chip, the input of a described M temperature sensing circuit is connected with battery strings described in every group respectively, output is connected with described MCU control chip.
4. ferric phosphate lithium cell energy-storage system as claimed in claim 1, is characterized in that: described electronic switch is IGBT or MOSET.
5. ferric phosphate lithium cell energy-storage system as claimed in claim 2, is characterized in that: described charge-discharge modules comprises charging control circuit and charge/discharge control circuit, is all connected with described MCU control chip;
Described MCU control chip is controlled described charging control circuit and charge/discharge control circuit and is stopped charging or electric discharge when battery strings generation overvoltage described in any a group, under-voltage, overcurrent or excess temperature.
6. ferric phosphate lithium cell energy-storage system as claimed in claim 2, is characterized in that: described alarm module comprises for sending loud speaker and the warning light for giving the alarm and glistening of alarm sound.
CN201420167967.4U 2014-04-08 2014-04-08 Lithium iron phosphate battery energy storage system Withdrawn - After Issue CN203788024U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103972990A (en) * 2014-04-08 2014-08-06 江苏博强新能源科技有限公司 Lithium iron phosphate battery energy storage system
CN104917276A (en) * 2015-06-11 2015-09-16 三峡大学 Photovoltaic energy storage BMS system
CN108028437A (en) * 2015-09-08 2018-05-11 株式会社东芝 Accumulator plant, battery system, method and program
CN109066831A (en) * 2018-07-10 2018-12-21 湖北华中光电科技有限公司 A kind of Multifunctional battery protective device suitable for blind operation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103972990A (en) * 2014-04-08 2014-08-06 江苏博强新能源科技有限公司 Lithium iron phosphate battery energy storage system
CN103972990B (en) * 2014-04-08 2017-04-12 江苏博强新能源科技股份有限公司 Lithium iron phosphate battery energy storage system
CN104917276A (en) * 2015-06-11 2015-09-16 三峡大学 Photovoltaic energy storage BMS system
CN108028437A (en) * 2015-09-08 2018-05-11 株式会社东芝 Accumulator plant, battery system, method and program
CN109066831A (en) * 2018-07-10 2018-12-21 湖北华中光电科技有限公司 A kind of Multifunctional battery protective device suitable for blind operation

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 215600 Zhangjiagang, Jiangsu, Jiangsu, Yangtze River, the Yangtze River International Metallurgical Industrial Park (Yu Bridge Village, the 25 buildings) Jiangsu Bo Qiang new energy Polytron Technologies Inc,

Patentee after: Jiangsu Bo strong new energy Polytron Technologies Inc

Address before: 215600 Zhangjiagang, Jiangsu, Jiangsu, Yangtze River, the Yangtze River International Metallurgical Industrial Park (Yu Bridge Village, the 25) Jiangsu Bo Qiang Amperex Technology Limited ()

Patentee before: Jiangsu Richpower New Energy Technology Co., Ltd.

AV01 Patent right actively abandoned

Granted publication date: 20140820

Effective date of abandoning: 20170412

AV01 Patent right actively abandoned