CN201789310U - Power direct current operating switching power supply - Google Patents

Power direct current operating switching power supply Download PDF

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Publication number
CN201789310U
CN201789310U CN2010201891227U CN201020189122U CN201789310U CN 201789310 U CN201789310 U CN 201789310U CN 2010201891227 U CN2010201891227 U CN 2010201891227U CN 201020189122 U CN201020189122 U CN 201020189122U CN 201789310 U CN201789310 U CN 201789310U
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CN
China
Prior art keywords
power supply
battery management
management module
switching power
batteries
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.)
Expired - Fee Related
Application number
CN2010201891227U
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Chinese (zh)
Inventor
张华平
张翼翔
樊越甫
刘海东
刘岩
刘方
任幼逢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luoyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Original Assignee
Luoyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Luoyang Power Supply Co of State Grid Henan Electric Power Co Ltd filed Critical Luoyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority to CN2010201891227U priority Critical patent/CN201789310U/en
Application granted granted Critical
Publication of CN201789310U publication Critical patent/CN201789310U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a power direct current operating switching power supply, which comprises accumulator batteries connected in series, wherein battery management modules are arranged inside the switching power supply, the number of the battery management modules is not less than the number of storage batteries of the accumulator batteries; positive and negative poles of each storage battery of the accumulator batteries are connected with an output end of each corresponding battery management module; an input end of each battery management module is connected with a direct current output end of a rectifying power distribution unit; and the output end of each battery management module is connected with a protecting bypass. The direct current operating switching power supply can carry out charging control on each single storage battery in the accumulator batteries, and can also protect the storage batteries and improve the stable reliability of the operation of the accumulator batteries.

Description

A kind of electric power dc operation Switching Power Supply
Technical field
The utility model relates to field of switch power, particularly electric power dc operation Switching Power Supply.
Background technology
In transformer station and power plant, be control loads such as automatics, and the system of living load power supplies such as circuit breaker electromagnetism combined floodgate, ac uninterrupted power supply, emergency lighting, be commonly referred to as dc operation power supply system.It is made of valve-regulated lead-acid battery group and charging device.Batteries is the important component part of electric power dc operation Switching Power Supply, and present way is, by rectification the alternating current of electrical network being transformed to direct current is whole battery charging.
Batteries normally is made of one group of storage battery of connecting, because all multifactor influences are transported in manufacturing process, measuring means and loading and unloading, even the battery of same model, parameter, its discreteness is ubiquity also, and all there are certain difference in the terminal voltage of every battery and internal resistance in the batteries.So the batteries unification charging when the series connection to storage battery constitutes when charging is finished, can make the less storage battery of raw capacity overcharge for a long time and cause the life of storage battery to shorten, and makes the bigger storage battery of capacity owe charging for a long time and capacity decline; And lack protection to each batteries, and work as accumulator failure, descend such as the single battery discharge capability, will drag down the discharge capability of whole batteries; Or be that single battery plate open circuit or internal resistance increase unusually, whole batteries is excised from system, whole power-supply system is quit work.
The utility model content
The purpose of this utility model provides a kind of electric power dc operation Switching Power Supply, with overcome existing Switching Power Supply to batteries can't charge the separately technical problem of the control and the storage battery of can't fixing a breakdown of whole charging.
For achieving the above object; the utility model adopts following technical scheme: a kind of electric power dc operation Switching Power Supply; the batteries that comprises series connection; be provided with the battery management module that quantity is no less than the storage battery quantity of batteries in this Switching Power Supply; the both positive and negative polarity of each storage battery of batteries connects with the output of a corresponding battery management module; the input of each battery management module all is connected with the dc output end of a rectification power supply unit, all is connected to a protection bypass on the output of each battery management module.
Because correspondence is connected with a battery management module on each storage battery of batteries, make that a battery management module can be separately to a charge in batteries, just can determine charging current and voltage according to the situation of each storage battery during charging, the battery quality that causes that overcharges and owe to fill that can avoid serial connection charge to cause descends.Owing on the output of each battery management module, all be connected to the protection bypass, make that when the storage battery of correspondence breaks down the protection bypass is bypass in time, excludes trouble accumulator, ensured reliable, the steady operation of batteries.
Battery management module comprises the high-frequency rectification circuit of anterior DC filtering circuit and a back-connected high-frequency rectification circuit or parallel connection more than two.
Described high-frequency rectification circuit comprises high-frequency inversion module, high frequency transformer and halfwave rectifier Buck converter.
Described halfwave rectifier Buck converter comprises rectifier diode, fly-wheel diode and LC filter inductance electric capacity; Rectifier diode and LC filter inductance electric capacity, high frequency transformer secondary winding form the loop, the rectifier diode anode connects high frequency transformer secondary winding end of the same name, and the fly-wheel diode anode connects high frequency transformer secondary winding different name end, negative electrode connects the rectifier diode negative electrode.
Described protection bypass is a bypass diode, with single storage battery reverse parallel connection.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the battery management module circuit diagram of embodiment 1;
Fig. 3 is the battery management module circuit diagram of embodiment 2.
Embodiment
Embodiment 1
As shown in Figure 1, electric power dc operation Switching Power Supply is made up of rectification power supply unit, battery management module, charging monitoring and battery cell monitoring unit, communication module, GPRS wireless module, touch panel monitor system module, distribution monitor, insulating monitoring, silicon stack step-down, serial line interface and USB flash disk interface, wind-cooling heat dissipating system.
The rectification power supply unit is made up of two-way alternating current self interlocking control circuit, and two groups of alternating currents are standby each other, is that direct current offers battery management module with AC rectification.Communication module is used for electric power dc operation Switching Power Supply and host computer data communication.The GPRS wireless module is used for electric power dc operation Switching Power Supply and attendant, reaches centralized control center's communication.The touch panel monitor system module is to input, setting, the demonstration of data.Serial line interface is used for upper machine communication, realizes the dual operation function; The USB flash disk interface is used for data and copies USB flash disk to, makes things convenient for the preservation of data.Insulating monitoring carries out insulating monitoring to direct current system.The step-down silicon stack provides power supply for the control bus.The wind-cooling heat dissipating system provides heat radiation for battery management module.Storage battery is a valve-regulated lead-acid battery.Charging monitoring and battery cell monitoring unit are controlled and are monitored each battery management module, floating charge, the time of all filling and charging current, the voltage of control storage battery, and the operation conditions of monitoring storage battery, match with GPRS wireless module and communication module, can be real-time the various information that discharge and recharge and battery information are sent to operating personnel's mobile phone or directly send to the host computer storage.
As can be seen from Figure 1, the battery management module is identical with storage battery quantity, and is corresponding one by one, during charging, is that corresponding storage battery charges separately by each battery management module; Each storage battery all is provided with the protection bypass, and when the storage battery operation troubles, its corresponding bypass can the short circuit storage battery.
As shown in Figure 2, battery management module comprises anterior a DC filtering circuit and a back-connected high-frequency rectification circuit thereof.The direct current that grid alternating current is carried out rectification formation enters high-frequency rectification circuit by the DC filtering circuit; At first pass through the high-frequency inversion module, carry out inversion, isolate by the high frequency transformer step-down then, the circuit of transformer secondary back forms a halfwave rectifier Buck circuit, be that rectifier diode D1 anode connects transformer secondary winding end of the same name, form the loop with LC filter inductance electric capacity, transformer secondary winding, sustained diode 2 anodes connect transformer secondary winding different name end, negative electrode connects rectifier diode D1 negative electrode.The corresponding battery management module of each storage battery (1-N) realizes charging separately.Above-mentioned high-frequency inversion module, high frequency transformer, halfwave rectifier Buck circuit, LC filter inductance electric capacity constitute high-frequency rectification circuit.
Storage battery 1 and corresponding battery management module and bypass thereof are analyzed.Diode D3 and storage battery 1 reverse parallel connection.During charging, bypass diode D3 bears back-pressure to be ended, to not influence of charging; During discharge, bypass diode D3 terminal voltage is equivalent to the poor of cell emf and internal resistance dividing potential drop, if storage battery 1 fault-free, because storage battery 1 internal resistance is minimum, bypass diode D3 still bears back-pressure to be ended; If storage battery 1 fault, then resistive is big in the storage battery 1, the internal resistance dividing potential drop becomes the big cell emf that surpasses makes the counter-rotating of bypass diode D3 terminal voltage, diode transfers conducting state to, then battery current is by bypass diode D3, the storage battery 1 of short trouble, whole batteries (not comprising storage battery 1) still can safe operations, thereby improved the security reliability of power supply operation.For the selection of bypass diode, should select the diode that conducting voltage is little, rated current is big, we have adopted conducting voltage 0.2V, the diode of rated current 200A.In addition; sustained diode 2 in the above-mentioned halfwave rectifier Buck converter, filter inductance become the π type with bypass diode D3; afterflow during sustained diode 2 chargings; when discharge, also can play the bypass effect; when battery current is big; can share the pressure of bypass diode D3, bypass diode D3 is had the certain protection effect.
Main circuit is aided with charging monitoring and battery cell monitoring unit; take a sample from output on the one hand in charging monitoring and battery cell monitoring unit; through comparing with established standards, remove to control main converter then, change its frequency or pulsewidth; it is stable to reach output; on the other hand, according to the data that test circuit provides, differentiate through protective circuit; provide control circuit that complete machine is carried out various safeguard measures, form control and monitoring system.
Embodiment 2
As shown in Figure 3, embodiment 2 is that with the different of embodiment 1 each battery management module all comprises plural described high-frequency rectification circuit, and high-frequency rectification circuit is parallel with one another, output termination storage battery.This way can be at double the increase charging current so that satisfy the charging demand of different capabilities battery.

Claims (5)

1. electric power dc operation Switching Power Supply; the batteries that comprises series connection; it is characterized in that; be provided with the battery management module that quantity is no less than the storage battery quantity of batteries in this Switching Power Supply; the both positive and negative polarity of each storage battery of batteries connects with the output of a corresponding battery management module; the input of each battery management module all is connected with the dc output end of a rectification power supply unit, all is connected to a protection bypass on the output of each battery management module.
2. electric power dc operation Switching Power Supply according to claim 1 is characterized in that, battery management module comprises the high-frequency rectification circuit of anterior DC filtering circuit and a back-connected high-frequency rectification circuit or parallel connection more than two.
3. electric power dc operation Switching Power Supply according to claim 2 is characterized in that, described high-frequency rectification circuit comprises high-frequency inversion module, high frequency transformer and halfwave rectifier Buck converter.
4. electric power dc operation Switching Power Supply according to claim 3 is characterized in that, described halfwave rectifier Buck converter comprises rectifier diode, fly-wheel diode and LC filter inductance electric capacity; Rectifier diode and LC filter inductance electric capacity, high frequency transformer secondary winding form the loop, the rectifier diode anode connects high frequency transformer secondary winding end of the same name, and the fly-wheel diode anode connects high frequency transformer secondary winding different name end, negative electrode connects the rectifier diode negative electrode.
5. according to arbitrary described electric power dc operation Switching Power Supply among the claim 1-4, it is characterized in that described protection bypass is a bypass diode, with single storage battery reverse parallel connection.
CN2010201891227U 2010-05-13 2010-05-13 Power direct current operating switching power supply Expired - Fee Related CN201789310U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201891227U CN201789310U (en) 2010-05-13 2010-05-13 Power direct current operating switching power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201891227U CN201789310U (en) 2010-05-13 2010-05-13 Power direct current operating switching power supply

Publications (1)

Publication Number Publication Date
CN201789310U true CN201789310U (en) 2011-04-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101958568A (en) * 2010-05-13 2011-01-26 张华平 Electric direct-current-operated switching power supply and storage battery pack management method thereof
CN104993722A (en) * 2015-07-26 2015-10-21 安徽彼德森电气设备有限公司 High-frequency switch rectifying module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101958568A (en) * 2010-05-13 2011-01-26 张华平 Electric direct-current-operated switching power supply and storage battery pack management method thereof
CN101958568B (en) * 2010-05-13 2013-03-20 洛阳普莱德电气有限公司 Electric direct-current-operated switching power supply and storage battery pack management method thereof
CN104993722A (en) * 2015-07-26 2015-10-21 安徽彼德森电气设备有限公司 High-frequency switch rectifying module

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110406

Termination date: 20150513

EXPY Termination of patent right or utility model