CN204668986U - A kind of battery charging and discharging device - Google Patents
A kind of battery charging and discharging device Download PDFInfo
- Publication number
- CN204668986U CN204668986U CN201520256514.3U CN201520256514U CN204668986U CN 204668986 U CN204668986 U CN 204668986U CN 201520256514 U CN201520256514 U CN 201520256514U CN 204668986 U CN204668986 U CN 204668986U
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- contactor
- controlled rectifier
- current
- discharging device
- charge
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a kind of battery charging and discharging device, comprises DC side contactor J1, bypass contactor J2, pre-charge resistance, AC contactor J3, three-phase alternating current inductance, controlled rectifier, man-machine interface and control module; One end of DC side contactor J1 connects treats charge/discharge battery, and the other end connects one end of bypass contactor J2; Bypass contactor J2 is in parallel with pre-charge resistance, is connected to controlled rectifier DC side; AC contactor J3 is connected to the AC of controlled rectifier by three-phase alternating current inductance.The utility model can realize energy in bidirectional flow between electrical network and the energy-storage battery of different electric pressure, and the direct voltage continuously adjustabe exported.
Description
Technical field
The utility model relates to a kind of discharge and recharge technology, particularly relates to the continuously adjustable charge and discharge device of a kind of output dc voltage.
Background technology
Energy storage technology is widely used in multiple industries such as the energy, traffic, electric power and develops in recent years, and battery energy storage is owing to laying portable, that the advantage such as energy density is high, dependable performance becomes energy storage technology gradually important development direction.Charge and discharge device is as the key equipment of battery energy storage, achieve the transfer of energy between battery and electrical network, due to the importance of this equipment, along with the fast development of the novel industries such as photovoltaic inversion, electric automobile, intelligent grid, charge and discharge device obtains increasing demand.
The uncontrollable rectify control mode of the many employings of current domestic battery boosting technology realizes, make energy can only from grid side to battery side one-way flow, the function that energy-storage battery discharges to electrical network can not be realized, and output dc voltage is fixed, the discharge and recharge of a certain electric pressure energy-storage battery can only be exclusively used in.
Utility model content
The utility model is in order to solve prior art and adopt uncontrollable rectifier system and can only realizing energy one-way flow, be suitable for the narrow technical problem of voltage range, a kind of battery charging and discharging device is provided, energy in bidirectional flow can be realized between electrical network and the energy-storage battery of different electric pressure, and the direct voltage continuously adjustabe exported.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: battery charging and discharging device, comprises DC side contactor J1, bypass contactor J2, pre-charge resistance, AC contactor J3, three-phase alternating current inductance, controlled rectifier, man-machine interface and control module;
The side of described DC side contactor J1 connects treats charge/discharge battery, the opposite side of DC side contactor J1, and one end connects side, the other end connection controlled rectifier DC side of bypass contactor J2; Described bypass contactor J2 is in parallel with pre-charge resistance, and the side of bypass contactor J2 connects DC side contactor J1, and opposite side connects controlled rectifier DC side; The side of described AC contactor J3 connects the AC of controlled rectifier by three-phase alternating current inductance, opposite side is connected with electrical network;
Described control module is connected with man-machine interface, controlled rectifier, DC side contactor J1, bypass contactor J2, AC contactor J3 respectively; The charge/discharge operation electric current of the operational order that control module reception man-machine interface inputs and setting, detect direct voltage, the charge/discharge current in charge/discharge loop, and control the disconnection or closed of DC side contactor J1, bypass contactor J2, AC contactor J3; The parameter that control module inputs according to man-machine interface, output drive signal controls controlled rectifier.
Preferably, described control module comprises controller, drive plate, current/voltage detection module, and controller is connected with drive plate, current/voltage detection module respectively, and drive plate is connected with controlled rectifier; Described current/voltage detection module primary side is connected with the major loop of controlled rectifier, and secondary side is connected with controller.
Preferably, described current/voltage detection module comprises current Hall transducer, voltage transformer; The primary side of described current Hall transducer is connected with the major loop of controlled rectifier AC, and secondary side is connected with controller; The primary side of voltage transformer is connected with the major loop of controlled rectifier DC side, and secondary side is connected with controller.
Preferably, described man-machine interface is touch-screen.
Preferably, described battery charging and discharging device also comprises the side that is connected to DC side contactor J1 and treats the DC side circuit breaker K2 between charge/discharge battery.
Preferably, described battery charging and discharging device also comprises the AC circuit breaker K1 between side and electrical network being connected to AC contactor J3.
Compared with prior art, the utility model device has following technique effect: during to battery charging/discharging, can carry out charge/discharge, when cell voltage exceedes the upper limit or the lower range of respective settings by the current value of setting to battery, charge/discharge terminates, and achieves the two-way flow of energy; And output dc voltage scope can set according to battery, improve the applicability of charge-discharge machine to different electric pressure battery charging and discharging.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model operational flowchart.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, the utility model battery charging and discharging device comprises: AC circuit breaker K1, DC side circuit breaker K2, DC side contactor J1, bypass contactor J2, pre-charge resistance, AC contactor J3,380/220 transformer, three-phase alternating current inductance, DC filter capacitor, controlled rectifier, touch-screen, and primarily of the control module that power panel, controller, drive plate, current/voltage detection module are formed.Controller is connected with power panel, drive plate, current/voltage detection module, touch-screen respectively, and drive plate is connected with controlled rectifier.The disconnection of DC side contactor J1, bypass contactor J2 and AC contactor J3, be closedly controlled by control module.
The side of DC side contactor J1 is the DC side external interface of the utility model charge and discharge device, connects the positive and negative electrode treating the battery of charge/discharge; Opposite side is inner at charge and discharge device, and one end of opposite side connects one end of bypass contactor J2, and the other end of opposite side connects the negative pole of controlled rectifier DC side.Bypass contactor J2 is in parallel with pre-charge resistance, and the side of bypass contactor J2 connects DC side contactor J1, and opposite side connects the positive pole of controlled rectifier DC side.The negative pole of controlled rectifier DC side is the DC side external interface negative pole of the utility model charge and discharge device, between the positive pole that DC filter capacitor is connected to the survey of controlled rectifier direct current and negative pole.The DC side external interface of the utility model charge and discharge device is provided with DC side circuit breaker K2, for connect or off voltage scope is the energy-storage battery of 500V ~ 850V.
AC contactor J3 is a three-phase contactor, and side connects the AC of controlled rectifier by three-phase alternating current inductance, and opposite side is the AC external interface of the utility model charge and discharge device, is connected with three-phase 380V electrical network.The AC external interface of the utility model charge and discharge device is provided with AC circuit breaker K1, for connecting or disconnecting three-phase 380V.
Current/voltage detection module is made up of current Hall transducer, voltage transformer; The primary side of current Hall transducer is connected with the major loop of controlled rectifier AC, and the three-phase current signal that secondary side produces enters controller; The primary side of voltage transformer is connected with the major loop of controlled rectifier DC side, and the voltage signal that secondary side produces enters controller.
Touch-screen is by the real-time communication of RS232 Interface and Controler.Touch-screen is on the one hand for checking the running status of charge and discharge device, charged state, output current, direct voltage, charging current, discharging current, upper voltage limit, lower voltage limit, fault message and circuit-breaker status etc.; Be used on the other hand combining with controller, control DC side contactor and AC contactor deciliter, the instruction such as the start and stop/reset of charge and discharge device.
The disconnection of DC side contactor J1, Closed control by DC switch on operation touch-screen point, close button, make controller export corresponding point, close instruction and realize.Following rule is followed in deciliter control of bypass contactor J2: after DC side contactor J1 is closed, if the direct voltage that controller detects reach set lower limit and the duration more than 3s, then controller output conjunction instruction makes bypass contactor J2 close, otherwise controller output split instruction makes bypass contactor J2 disconnect.When DC side contactor J1 and bypass contactor J2 is closed, and controller is not when fault being detected, the disconnection of AC contactor J3, Closed control by alternating-current switch on operation touch-screen point, close button, make controller export corresponding point, close instruction and realize.
The parameter that controller inputs according to touch-screen carries out SVPWM calculating, PWM drive singal is exported to drive plate, to drive the work of controlled rectifier: when the utility model charge and discharge device is operated in charged state, energy flows to battery from electrical network, and export charging current (namely battery charger state makes electric current) by the current value preset in charging process, now power device is operated in controlled rectification state, charge when cell voltage reaches the higher limit of setting complete, charge and discharge device stops charging to battery; When charge and discharge device is operated in discharge condition, energy flows to electrical network from battery, and export discharging current (i.e. discharge condition operating current) by the current value preset in discharge process, now power device is operated in inverter mode, when cell voltage is lower than discharge off during the lower limit set, charge and discharge device disconnects contactor, stops battery discharge.
When DC side contactor J1 and AC contactor J3 closes, after pressing the start button on touch-screen, the utility model charge and discharge device presses setup parameter work; After pressing the stop button on touch-screen, the utility model charge and discharge device quits work; When controller detects fault, the utility model charge and discharge device quits work immediately and disconnects all contactors, now only has reset controller could continue to operate charge and discharge device.See Fig. 2, operating process of the present utility model is as follows: first by touch-screen close circuit breaker K1, K2 and D.C. contactor J1.If when direct voltage is in set point, automatically closed bypass contactor J2 afterwards in 3 seconds, then closed A.C. contactor J3, the current parameters of setting charge/discharge, start the utility model charge and discharge device and run; In the utility model charge and discharge device running, if controller detects there occurs fault, then disconnect contactor J1, J2 and J3, wait for reset charge and discharge device.If direct voltage exceeds set point, then stop charge/discharge work of the present utility model.
Above-described embodiment is a kind of execution mode of the present utility model; but execution mode of the present utility model is not limited thereto; be engaged in person skilled in art do not deviate from the utility model spirit and principle under make any combination, replacement, amendment, improvement, be all included in protection range of the present utility model.
Claims (9)
1. a battery charging and discharging device, is characterized in that, comprises DC side contactor J1, bypass contactor J2, pre-charge resistance, AC contactor J3, three-phase alternating current inductance, controlled rectifier, man-machine interface and control module;
The side of described DC side contactor J1 connects treats charge/discharge battery, the opposite side of DC side contactor J1, and one end connects the side of bypass contactor J2, and the other end connects controlled rectifier DC side; Described bypass contactor J2 is in parallel with pre-charge resistance, and the side of bypass contactor J2 connects DC side contactor J1, and opposite side connects controlled rectifier DC side; The side of described AC contactor J3 connects the AC of controlled rectifier by three-phase alternating current inductance, opposite side is connected with electrical network;
Described control module is connected with man-machine interface, controlled rectifier, DC side contactor J1, bypass contactor J2, AC contactor J3 respectively; The charge/discharge operation electric current of the operational order that control module reception man-machine interface inputs and setting, detect direct voltage, the charge/discharge current in charge/discharge loop, and control the disconnection or closed of DC side contactor J1, bypass contactor J2, AC contactor J3; The parameter that control module inputs according to man-machine interface, output drive signal controls controlled rectifier.
2. battery charging and discharging device according to claim 1, it is characterized in that, described control module comprises controller, drive plate, current/voltage detection module, and controller is connected with drive plate, current/voltage detection module respectively, and drive plate is connected with controlled rectifier; Described current/voltage detection module primary side is connected with the major loop of controlled rectifier, and secondary side is connected with controller.
3. battery charging and discharging device according to claim 2, is characterized in that, described current/voltage detection module comprises current Hall transducer, voltage transformer; The primary side of described current Hall transducer is connected with the major loop of controlled rectifier AC, and secondary side is connected with controller; The primary side of described voltage transformer is connected with the major loop of controlled rectifier DC side, and secondary side is connected with controller.
4. battery charging and discharging device according to claim 1, is characterized in that, is provided with DC filter capacitor between the positive pole that described controlled rectifier direct current is surveyed and negative pole.
5. battery charging and discharging device according to claim 1, is characterized in that, described man-machine interface is touch-screen.
6. battery charging and discharging device according to claim 1, is characterized in that, described drive singal is PWM drive singal.
7. battery charging and discharging device according to claim 1, is characterized in that, described battery charging and discharging device also comprises the side that is connected to DC side contactor J1 and treats the DC side circuit breaker K2 between charge/discharge battery.
8. battery charging and discharging device according to claim 1, is characterized in that, described battery charging and discharging device also comprises the AC circuit breaker K1 between side and electrical network being connected to AC contactor J3.
9. battery charging and discharging device according to claim 1, is characterized in that:
The disconnection of described DC side contactor J1, Closed control by DC switch in operation man-machine interface point, close button, make controller export corresponding point, close instruction and realize;
Following rule is followed in deciliter control of described bypass contactor J2: after DC side contactor J1 is closed, if the direct voltage that controller detects reach set lower limit and the duration more than 3s, then controller output conjunction instruction makes bypass contactor J2 close, otherwise controller output split instruction makes bypass contactor J2 disconnect;
When described DC side contactor J1 and described bypass contactor J2 is closed, and controller is not when fault being detected, the disconnection of described AC contactor J3, Closed control by alternating-current switch in operation man-machine interface point, close button, make controller export corresponding point, close instruction and realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256514.3U CN204668986U (en) | 2015-04-23 | 2015-04-23 | A kind of battery charging and discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256514.3U CN204668986U (en) | 2015-04-23 | 2015-04-23 | A kind of battery charging and discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204668986U true CN204668986U (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520256514.3U Expired - Fee Related CN204668986U (en) | 2015-04-23 | 2015-04-23 | A kind of battery charging and discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204668986U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111092471A (en) * | 2019-12-28 | 2020-05-01 | 天津易鼎丰动力科技有限公司 | Use method of overcharge and overdischarge protection circuit for energy storage battery pack |
| CN113872259A (en) * | 2020-06-30 | 2021-12-31 | 比亚迪股份有限公司 | Contactor, direct current distribution box and vehicle that charges |
-
2015
- 2015-04-23 CN CN201520256514.3U patent/CN204668986U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111092471A (en) * | 2019-12-28 | 2020-05-01 | 天津易鼎丰动力科技有限公司 | Use method of overcharge and overdischarge protection circuit for energy storage battery pack |
| CN111092471B (en) * | 2019-12-28 | 2023-05-09 | 天津易鼎丰动力科技有限公司 | Using method of overcharge and overdischarge protection circuit for energy storage battery pack |
| CN113872259A (en) * | 2020-06-30 | 2021-12-31 | 比亚迪股份有限公司 | Contactor, direct current distribution box and vehicle that charges |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 |