CN202374022U - Charge and discharge control system - Google Patents

Charge and discharge control system Download PDF

Info

Publication number
CN202374022U
CN202374022U CN2011204723035U CN201120472303U CN202374022U CN 202374022 U CN202374022 U CN 202374022U CN 2011204723035 U CN2011204723035 U CN 2011204723035U CN 201120472303 U CN201120472303 U CN 201120472303U CN 202374022 U CN202374022 U CN 202374022U
Authority
CN
China
Prior art keywords
contactor
links
charging
charge
change
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
CN2011204723035U
Other languages
Chinese (zh)
Inventor
王营辉
尹雪芹
梁小贤
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.)
BYD Co Ltd
Original Assignee
BYD 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 BYD Co Ltd filed Critical BYD Co Ltd
Priority to CN2011204723035U priority Critical patent/CN202374022U/en
Application granted granted Critical
Publication of CN202374022U publication Critical patent/CN202374022U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model provides a charge and discharge control system, which comprises a battery pack, charge equipment and an alternating current network, wherein the charge equipment comprises a current conversion module and a controller; the controller controls the current conversion module to convert the electric energy of the alternating current network into direct current to charge the battery pack and controls the current conversion module to convert the electric energy which is released by the battery pack into alternating current; and the alternating current is fed back to the alternating current network. The battery pack is not required to be discharged by using a load, and resources are effectively saved.

Description

A kind of charge-discharge control system
Technical field
The utility model relates to a kind of charge-discharge control system.
Background technology
At present both at home and abroad the non-vehicle-mounted charge equipment for charging electric vehicle all is unidirectional, charging cabinet for example, and the conversion efficiency of unidirectional charging cabinet is low, and harmonic ratio is bigger; Meetings such as lithium battery in the electric automobile or iron cell are along with discharging and recharging for a long time and other factors and cause the capacity of battery to change; Thereby it is inaccurate to cause battery SOC to detect; Proofreading and correct the accuracy of battery SOC need thoroughly discharge to battery pack, and present individual event charging cabinet both domestic and external can only can not discharge for charging electric vehicle; If can only discharge by working load, cause the wasting of resources to the electric automobile discharge.
The utility model content
To the wasting of resources problem that at present can't adopt load discharge to bring to the electric automobile discharge because of unidirectional charging cabinet, the utility model proposes a kind of charge-discharge control system, can effectively economize on resources.
A kind of charge-discharge control system; Comprise battery pack, charging device and AC network; Said charging device comprises the controller that is used for the change of current module that alternating current and direct current are changed each other and is used to control charging device charging and discharge; Said change of current module comprises dc terminal and exchanges end, and the interchange end of said change of current module links to each other with AC network, and the dc terminal of said change of current module links to each other with battery pack.
Further, said equipment also comprises AC transformer, and the primary coil of said AC transformer links to each other with AC network, and the secondary coil of said AC transformer links to each other with the end that exchanges of change of current module.
Further, said change of current module is the three phase full bridge converter circuit, and the DC side of said three phase full bridge converter circuit is the dc terminal of change of current module, and the AC side of said three phase full bridge converter circuit is the interchange end of change of current module.
Further, said charging device also comprises D.C. contactor and A.C. contactor, and an end of said D.C. contactor links to each other with the dc terminal of change of current module, and the other end of said D.C. contactor links to each other with battery pack; One end of said A.C. contactor links to each other with the primary coil of AC transformer, and the other end of said A.C. contactor links to each other with AC network, and said D.C. contactor links to each other with controller respectively with A.C. contactor.
Further; Said charging device also comprises direct current preliminary filling contactor, direct current preliminary filling resistance, exchanges preliminary filling resistance and exchanges the preliminary filling contactor; Said direct current preliminary filling contactor is parallelly connected with D.C. contactor after connecting with direct current preliminary filling resistance; Said interchange preliminary filling contactor with exchange preliminary filling resistance series connection after parallelly connected with A.C. contactor, said direct current preliminary filling contactor with exchange the preliminary filling contactor and link to each other with controller respectively.
Further, said charging device also comprises the LC filter, and the input of said LC filter links to each other with the end that exchanges of change of current module, and the output of said LC filter links to each other with the secondary coil of AC transformer.
Further, said charging device comprises also and is used to import the human-computer interaction interface that discharges and recharges control signal and show the charging device operating state that said human-computer interaction interface links to each other with controller.
Further, said charging device also comprises dc fuse and the AC fuse that is used for protection system, and an end of said dc fuse links to each other with D.C. contactor, and the other end of said dc fuse links to each other with battery pack; One end of said AC fuse links to each other with A.C. contactor, and the other end of said AC fuse links to each other with AC network.
Further, said charging device also comprises AC circuit breaker, and an end of said AC circuit breaker links to each other with AC fuse, and the other end of said AC circuit breaker links to each other with AC network.
Further, said battery pack is an electric automobile vehicle mounted dynamic battery group.
A kind of charge-discharge control system that the utility model provides; Exchange with the mutual conversion of direct current and be battery charge and discharge through change of current module through controller control charging device; The electric energy feedback AC network of battery discharge, need not working load is battery power discharge, effectively economizes on resources.
Description of drawings
The structural representation of a kind of embodiment of a kind of charge-discharge control system that Fig. 1 provides for the utility model.
The structural representation of a kind of another embodiment of charge-discharge control system that Fig. 2 provides for the utility model.
The structural representation of the change of current module of a kind of charge-discharge control system that Fig. 3 provides for the utility model.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Shown in accompanying drawing 1; A kind of charge-discharge control system provided by the invention; Comprise battery pack 1, charging device 2 and AC network 3, charging device 2 comprises the controller 23 that is used for the change of current module 21 that AC and DC is changed each other and is used for control system charging and discharge, and change of current module 21 comprises dc terminal a and exchanges end b; The interchange end b of change of current module 21 links to each other with AC network 3; The dc terminal a of change of current module 21 links to each other with battery pack 1, and it is battery pack 1 charging that controller 23 control change of current modules 21 convert the electric energy of AC network to direct current, and control change of current module 21 electric energy that battery pack 1 is emitted converts alternating current to and feeds back to AC network 3.
Shown in accompanying drawing 2; Charging device 2 also comprises AC transformer 22; The primary coil of AC transformer 22 links to each other with AC network 3, and the secondary coil of AC transformer 22 links to each other with the end b that exchanges of change of current module 21, and the dc terminal a of change of current module 21 links to each other with battery pack 1.
Shown in accompanying drawing 3; Change of current module 21 comprises the three phase full bridge converter circuit; The DC side of three phase full bridge converter circuit is the dc terminal a of change of current module 21; The AC side of three phase full bridge converter circuit is the interchange end b of change of current module 21, and controller 23 carries out direct current and the mutual conversion that exchanges through the conducting of the thyristor of control three phase full bridge converter circuit with the shutoff Control current.
Shown in accompanying drawing 2, charging device 2 also comprises D.C. contactor K4 and A.C. contactor K1, and the end of D.C. contactor K4 links to each other with the dc terminal a of change of current module 21, and the other end of D.C. contactor K4 links to each other with battery pack 1; The end of A.C. contactor K1 links to each other with the primary coil of AC transformer 22; The other end of A.C. contactor K1 links to each other with AC network 3; D.C. contactor K4 links to each other with controller 23 respectively with A.C. contactor K1, and controller 23 charges through D.C. contactor K4 and A.C. contactor K1 control system and discharges.
Charging device 2 also comprises direct current preliminary filling contactor K3, direct current preliminary filling resistance R2, exchanges preliminary filling resistance R1 and exchanges preliminary filling contactor K2; It is parallelly connected after direct current preliminary filling contactor K3 connects with direct current preliminary filling resistance R2 with D.C. contactor K4; Parallelly connected after exchanging preliminary filling contactor K2 and exchanging preliminary filling resistance R1 series connection with A.C. contactor K1; Direct current preliminary filling contactor K3 with exchange preliminary filling contactor K2 and link to each other with controller 23 respectively; Controller 23 through control direct current preliminary filling contactor K3 with exchange preliminary filling contactor K2 and respectively DC side and AC side carried out preliminary filling, avoid battery pack 1 generation impulse current.
Charging device 2 also comprises LC filter 24, and the input of LC filter 24 links to each other with the end that exchanges of change of current module 21, and the output of LC filter 24 links to each other with the secondary coil of AC transformer 22.
Charging device 2 comprises also and is used to import the human-computer interaction interface 25 that discharges and recharges control signal and show the charging device operating state that human-computer interaction interface 25 links to each other with controller 23.
Charging device 2 also comprises dc fuse FU2 and the AC fuse FU1 that is used for protection system, and the end of dc fuse FU2 links to each other with D.C. contactor K4, and the other end of dc fuse FU2 links to each other with battery pack 1; The end of AC fuse FU1 links to each other with A.C. contactor K2, and the other end of AC fuse FU1 links to each other with AC network 3.
Charging device 2 also comprises AC circuit breaker K5; The end of AC circuit breaker K5 links to each other with AC fuse FU1; The other end of AC circuit breaker K5 links to each other with AC network 3, when system breaks down, can manually break off AC circuit breaker K5, effectively protection system.
Preferably, battery pack 1 is an electric automobile vehicle mounted dynamic battery group, as energy-storage units, is electric automobile that electrical network is done the electric power allotment in peak times of power consumption.。
Below further specify the present invention through specific embodiment.
When battery pack 1 needed charge or discharge, the AC circuit breaker K5 that closes can pass through human-computer interaction interface input operation information: information such as charge or discharge, size of current; Artificial through start and stop button input enabling signal, controller 23 receives enabling signal, at first adhesive direct current preliminary filling contactor K3; The capacitor C of battery 1 exchange flow module 21 is carried out preliminary filling; When controller 23 detects the capacitor C preliminary filling after certain voltage, adhesive D.C. contactor K4 breaks off direct current preliminary filling contactor K3; After controller 23 detects D.C. contactor K4 closure; Control exchanges preliminary filling contactor K2 adhesive; The AC side of AC network 3 exchange flow modules 21 is carried out preliminary filling, earlier AC side is carried out preliminary filling and can effectively avoid excessive impulse current to damage thyristor, after preliminary filling is accomplished; Controller 23 control A.C. contactor K1 adhesives exchange preliminary filling contactor K2 and break off.
To detect D.C. contactor K4 and A.C. contactor K1 all closed when controller; System begins to carry out work according to the signal of input, and when operation information was charging, the voltage of AC network 3 outputs converted target voltage to through AC transformer 22; Carry out filtering through LC filter 24 again; The three phase full bridge rectification is carried out in the thyristor conducting and the shutoff of controller 23 control change of current modules 21, exports a direct current that is complementary with battery 1, for battery 1 charges.
When operation information is discharge; The thyristor conducting of controller 23 control change of current modules 21 is carried out inversion with the voltage that turn-offs battery pack 1 output; Output AC voltage; The alternating voltage of output through after 24 filtering of LC filter again through AC transformer 22 obtain with AC network 3 with the synchronous alternating voltage of amplitude, and to AC network 3.
Charge-discharge control system if fault then can artificially be cut off AC circuit breaker K5, effectively guarantees the fail safe of system in the charge or discharge process.
Charging device 2 can be charging cabinet, charger and charging pile etc.
A kind of charge-discharge control system provided by the invention; Exchange with the mutual conversion of direct current and be batteries charging and discharge through change of current module through controller control charging device, the electric energy feedback AC network of battery power discharge, need not working load is battery discharge; Effectively economize on resources; The present invention can also apply to the intelligent grid field, as energy-storage units, is electric automobile that electrical network is done the electric power allotment in peak times of power consumption.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.

Claims (10)

1. charge-discharge control system; Comprise battery pack, charging device and AC network; It is characterized in that said charging device comprises the controller that is used for the change of current module that alternating current and direct current are changed each other and is used to control charging device charging and discharge, said change of current module comprises dc terminal and exchanges end; The interchange end of said change of current module links to each other with AC network, and the dc terminal of said change of current module links to each other with battery pack.
2. charge-discharge control system according to claim 1 is characterized in that said equipment also comprises AC transformer, and the primary coil of said AC transformer links to each other with AC network, and the secondary coil of said AC transformer links to each other with the end that exchanges of change of current module.
3. charge-discharge control system according to claim 1; It is characterized in that; Said change of current module is the three phase full bridge converter circuit, and the DC side of said three phase full bridge converter circuit is the dc terminal of change of current module, and the AC side of said three phase full bridge converter circuit is the interchange end of change of current module.
4. charge-discharge control system according to claim 2; It is characterized in that; Said charging device also comprises D.C. contactor and A.C. contactor, and an end of said D.C. contactor links to each other with the dc terminal of change of current module, and the other end of said D.C. contactor links to each other with battery pack; One end of said A.C. contactor links to each other with the primary coil of AC transformer, and the other end of said A.C. contactor links to each other with AC network, and said D.C. contactor links to each other with controller respectively with A.C. contactor.
5. charge-discharge control system according to claim 4; It is characterized in that; Said charging device also comprises direct current preliminary filling contactor, direct current preliminary filling resistance, exchanges preliminary filling resistance and exchanges the preliminary filling contactor; Said direct current preliminary filling contactor is parallelly connected with D.C. contactor after connecting with direct current preliminary filling resistance, said interchange preliminary filling contactor with exchange preliminary filling resistance connect afterwards parallelly connected with A.C. contactor, said direct current preliminary filling contactor with exchange the preliminary filling contactor and link to each other with controller respectively.
6. charge-discharge control system according to claim 2; It is characterized in that; Said charging device also comprises the LC filter, and the input of said LC filter links to each other with the end that exchanges of change of current module, and the output of said LC filter links to each other with the secondary coil of AC transformer.
7. charge-discharge control system according to claim 1 is characterized in that, said charging device comprises also and be used to import the human-computer interaction interface that discharges and recharges control signal and show the charging device operating state that said human-computer interaction interface links to each other with controller.
8. charge-discharge control system according to claim 4; It is characterized in that; Said charging device also comprises dc fuse and the AC fuse that is used for protection system, and an end of said dc fuse links to each other with D.C. contactor, and the other end of said dc fuse links to each other with battery pack; One end of said AC fuse links to each other with A.C. contactor, and the other end of said AC fuse links to each other with AC network.
9. charge-discharge control system according to claim 8 is characterized in that said charging device also comprises AC circuit breaker, and an end of said AC circuit breaker links to each other with AC fuse, and the other end of said AC circuit breaker links to each other with AC network.
10. charge-discharge control system according to claim 1 is characterized in that, said battery pack is an electric automobile vehicle mounted dynamic battery group.
CN2011204723035U 2011-11-24 2011-11-24 Charge and discharge control system Expired - Fee Related CN202374022U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204723035U CN202374022U (en) 2011-11-24 2011-11-24 Charge and discharge control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204723035U CN202374022U (en) 2011-11-24 2011-11-24 Charge and discharge control system

Publications (1)

Publication Number Publication Date
CN202374022U true CN202374022U (en) 2012-08-08

Family

ID=46597713

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204723035U Expired - Fee Related CN202374022U (en) 2011-11-24 2011-11-24 Charge and discharge control system

Country Status (1)

Country Link
CN (1) CN202374022U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103595063A (en) * 2013-11-21 2014-02-19 国网上海市电力公司 Energy storage converter and battery energy storage system of energy storage converter
CN103618328A (en) * 2013-11-28 2014-03-05 安徽启光能源科技研究院有限公司 Power conversion system of mobile energy accumulating device
CN104135020A (en) * 2014-07-23 2014-11-05 深圳市汇川技术股份有限公司 Battery access control system and method for direct-current side of energy storage converter
CN108566713A (en) * 2018-05-03 2018-09-21 珠海市睿影科技有限公司 Capacitance charge/discharge control circuit and X-ray machine for capacitive energy storage high pressure generator
CN110549899A (en) * 2018-06-01 2019-12-10 比亚迪股份有限公司 Charging method and charging system for rail transit vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103595063A (en) * 2013-11-21 2014-02-19 国网上海市电力公司 Energy storage converter and battery energy storage system of energy storage converter
CN103595063B (en) * 2013-11-21 2016-03-30 国网上海市电力公司 A kind of energy accumulation current converter and battery energy storage system thereof
CN103618328A (en) * 2013-11-28 2014-03-05 安徽启光能源科技研究院有限公司 Power conversion system of mobile energy accumulating device
CN104135020A (en) * 2014-07-23 2014-11-05 深圳市汇川技术股份有限公司 Battery access control system and method for direct-current side of energy storage converter
CN108566713A (en) * 2018-05-03 2018-09-21 珠海市睿影科技有限公司 Capacitance charge/discharge control circuit and X-ray machine for capacitive energy storage high pressure generator
CN108566713B (en) * 2018-05-03 2019-11-05 珠海市睿影科技有限公司 Capacitor charge/discharge control circuit and X-ray machine for capacitive energy storage high pressure generator
CN110549899A (en) * 2018-06-01 2019-12-10 比亚迪股份有限公司 Charging method and charging system for rail transit vehicle

Similar Documents

Publication Publication Date Title
CN102427266B (en) Multifunctional photovoltaic UPS (uninterruptible power supply) system and control method thereof
CN103236706B (en) The battery energy storage system of transformation topology is handed over based on modular multilevel
CN202374022U (en) Charge and discharge control system
CN201752075U (en) Charge-discharge and energy storage circuit
CN202424196U (en) Large-capacity energy storage converter formed by connecting multiple groups of inverter units in parallel
CN201466775U (en) Storage battery charging and discharging device
CN103138355A (en) Charge-discharge control system
CN203368044U (en) Bidirectional ac/dc multi-power-supply multi-load safe-isolation micro electrical network system
CN203800680U (en) Large power bidirectional deflector capable of supporting access of multiple cell groups
CN103915856B (en) A kind of base station is grid-connected-charging photovoltaic micro-inverter system and control method thereof
CN202712876U (en) Solar photovoltaic microgrid grid-connected power generation system
CN102005772A (en) Network combination inversion system and control method thereof
CN204836027U (en) Domestic energy storage power system
CN202231473U (en) Direct-current charger with high voltage and large current
CN102611171A (en) High-pressure large-current direct-current charger
CN202749870U (en) Storage battery intelligent uniform charging controller for grid-disconnection type wind and light complementary power generation system
CN102611173B (en) Two-level charge-discharge system
CN102651552B (en) Wind-powered electricity generation energy storage frequency modulation peak regulation control system
CN201690248U (en) Accumulator charging and discharging connection device
CN103259059A (en) Initial charging method of flow battery and circuit
CN203466613U (en) Household off-network light-storage supplementary electricity generation system compatible with multiple types of energy-storage systems
CN204928327U (en) Public generating line charge -discharge power auxiliary electrical power source of lead acid battery
CN101924372B (en) Energy storage control system
CN204304464U (en) A kind of solar grid-connected inverse control system
CN204928304U (en) Novel charging and protection system of two sections lithium cell core group batteries

Legal Events

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

Granted publication date: 20120808

Termination date: 20201124