CN203574396U - Charge and discharge controller - Google Patents
Charge and discharge controller Download PDFInfo
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- CN203574396U CN203574396U CN201320568387.1U CN201320568387U CN203574396U CN 203574396 U CN203574396 U CN 203574396U CN 201320568387 U CN201320568387 U CN 201320568387U CN 203574396 U CN203574396 U CN 203574396U
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Abstract
The utility model discloses a charge and discharge controller, and the controller comprises input-end positive and negative contacts, output-end positive and negative contacts, an isolation DC-DC converter of input-end positive and negative electrodes and output-end positive and negative electrodes, and a control unit which is connected with the isolation DC-DC converter, wherein the input-end positive and negative electrodes of the isolation DC-DC converter are respectively in electrical connection with the input-end positive and negative contacts. The output-end positive and negative electrodes of the isolation DC-DC converter are respectively in electrical connection with the output-end positive and negative contacts. The isolation DC-DC converter also comprises: an isolation transformer which is provided with a primary coil and a secondary coil; a first full-bridge circuit which is electrically connected with the primary coil of the isolation transformer, and a second full-bridge circuit which is electrically connected with the secondary coil of the isolation transformer. The turns ratio of the primary coil of the isolation transformer to the secondary coil of the isolation transformer is n: 1, wherein the n is greater than 1.
Description
Technical field:
The utility model relates to the electronic unit in a kind of new energy system, particularly a kind of charging-discharging controller.
Background technology:
Be accompanied by pollution problem and the kerosene consumption of growing interest on the earth, the technology of utilizing natural resources to obtain regenerative resource electric power has been subject to whole world scientist's extensive concern.In all methods, solar electric power, wind power generation are the most promising, because solar energy and wind energy are the abundantest in our environment, be also the cleanest in all resources, solar energy, these regenerative resources of wind energy will have larger development space future.Existing regenerative resource converting system all has a unidirectional charge controller conventionally, it is booster type charge controller, the electric power that solar panel or wind motor produce is inverter or high-voltage load power supply through booster type charge controller, be voltage-dropping type charge controller, the electric power that solar panel or wind motor produce is storage battery or low-voltage load power supply through voltage-dropping type charge controller.And in existing solar energy or powered by wind energy system, electrical network is as system stored energy device.When grid power blackout, system will quit work, and some important independent loads will lose electric power, and many times, these important independent loads must be worked, and the power supply that must ensure standby is supplied with.Therefore in a system, existing high-voltage load has again storage battery, and unidirectional charge controller is difficult to satisfy the demands.
Utility model content:
Technical problem to be solved in the utility model is to provide a kind of charging-discharging controller, it comprises input anode joint A, input cathode joint B, output head anode joint C, negative pole of output end joint D, also comprise that tape input rectifies utmost point a, input cathode b and output head anode c, the isolation DC-DC converter of negative pole of output end d, and the control unit being connected with isolation DC-DC converter, wherein, the input anode a of described isolation DC-DC converter is electrically connected to input anode joint A, the input cathode b of isolation DC-DC converter is electrically connected to input cathode joint B, the output head anode c of isolation DC-DC converter is electrically connected to output head anode joint C, the negative pole of output end d of isolation DC-DC converter is electrically connected to negative pole of output end joint D, described isolation DC-DC converter also comprises the isolating transformer with primary coil and secondary coil, the first full-bridge circuit being electrically connected to isolating transformer primary coil, and the second full-bridge circuit being electrically connected to isolating transformer secondary coil, the turn ratio of wherein said isolating transformer primary coil and secondary coil is that n is than 1, wherein n is greater than 1.
The utility model further technical characterictic is:
The input cathode b of described isolation DC-DC converter is electrically connected to output head anode joint C, and described negative pole of output end joint D is electrically connected to input cathode joint B.
It is MPPT circuit that described charging-discharging controller also includes MPPT maximum power point tracking.
Described charging-discharging controller has two kinds of mode of operations: the first mode of operation is that electric current is inputted from input positive and negative connector A, B, output positive and negative charge joint C, D output, i.e. voltage-dropping type mode of operation; The second mode of operation is that electric current is from output positive and negative charge joint C, D input, from input positive and negative connector A, B output, i.e. booster type mode of operation; These two kinds of mode of operations are selected to control by control unit.
The beneficial effects of the utility model are: owing to isolating DC-DC converter described in the utility model, comprise the isolating transformer with primary coil and secondary coil, the first full-bridge circuit being electrically connected to isolating transformer primary coil, and the second full-bridge circuit being electrically connected to isolating transformer secondary coil, the turn ratio of wherein said isolating transformer primary coil and secondary coil is that n is than 1, wherein n is greater than 1, known according to the turn ratio of the invertibity of full-bridge circuit and transformer and secondary coil, this charging-discharging controller can be done voltage-dropping type charge controller and use, also can be used as booster type charge controller uses.
Accompanying drawing explanation:
Fig. 1 is the topological structure schematic diagram of the utility model one embodiment;
Fig. 2 is the topological structure schematic diagram of another embodiment of the utility model.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the topological structure schematic diagram of the utility model one embodiment, in this embodiment, described charging-discharging controller comprises input anode joint A, input cathode joint B, output head anode joint C, negative pole of output end joint D, also comprise that tape input rectifies utmost point a, input cathode b and output head anode c, the isolation DC-DC converter of negative pole of output end d, and the control unit (not shown) being connected with isolation DC-DC converter, the input anode a that wherein isolates DC-DC converter is electrically connected to input anode joint A, the input cathode b of isolation DC-DC converter is electrically connected to input cathode joint B, the output head anode c of isolation DC-DC converter is electrically connected to output head anode joint C, the negative pole of output end d of isolation DC-DC converter is electrically connected to negative pole of output end joint D, described isolation DC-DC converter also comprises the isolating transformer with primary coil and secondary coil, the first full-bridge circuit being electrically connected to isolating transformer primary coil, and the second full-bridge circuit being electrically connected to isolating transformer secondary coil, the turn ratio of the primary coil of isolating transformer described in the present embodiment and secondary coil is 2:1, certainly, when practical application, can as required the turn ratio of isolating transformer primary coil and secondary coil be set as to 3:1,4:1,5:1,25:1,35:1,50:1,70:1 or 90:1.
Known according to the invertibity of full-bridge circuit, this charging-discharging controller has two kinds of mode of operations, and these two kinds of mode of operations are selected to control by control unit.Control unit is not shown in the figures, and being connected between control unit and isolation DC-DC transducer adopts routine techniques.Charging-discharging controller the first mode of operation is: electric current is from input positive and negative connector A, B input, and output positive and negative charge joint C, D export, and voltage-dropping type charge controller, can be charge in batteries or low-voltage load power supply; The second mode of operation is: electric current is from output positive and negative charge joint C, D input, and from input positive and negative connector A, B output, booster type discharge controller, can be inverter or high-voltage load power supply.
When charging-discharging controller is worked under the first mode of operation, very high to the resistance to fluidity requirement of electronic devices and components wherein, when charging-discharging controller is worked under the second mode of operation, very high to electronic devices and components resistance to pressure requirement wherein, this has improved the cost of charging-discharging controller undoubtedly, has also limited its useful life simultaneously; For overcoming these shortcomings, Fig. 2 provides the topological structure schematic diagram of another embodiment of the utility model, the input cathode b of wherein said isolation DC-DC converter is electrically connected to output head anode joint C as seen from Figure 2, and described negative pole of output end joint D is electrically connected to input cathode joint B.While working under the first mode of operation like this, one part of current is to be superimposed upon isolation DC-DC converter outside, do not need charging-discharging controller internal electronic component to carry this electric current, so the resistance to stream of electronic devices and components is wherein required significantly to reduce, the cost of charging-discharging controller will significantly reduce like this, and the life-span also can extend naturally, and under the first mode of operation, such connected mode can get around isolation DC-DC converter and directly send some energy to storage battery or low-voltage load, the power consumption of isolating DC-DC converter is also significantly reduced, the available horsepower of higher percent is delivered to storage battery or low-voltage load, charging-discharging controller efficiency is also improved largely thereupon like this, thereby can make the maximizing efficiency of whole electric power system.
Equally in the embodiment shown in Figure 2, when described charging-discharging controller is worked under the second mode of operation, part voltage is to be superimposed upon isolation DC-DC converter outside, do not need charging-discharging controller internal electronic component to carry this voltage, so electronic devices and components requirement of withstand voltage wherein is significantly reduced, the cost of charging-discharging controller will significantly reduce like this, and the life-span also can extend naturally, and such connected mode can get around isolation DC-DC converter and directly sends some energy to inverter or high-voltage load, the power consumption of isolating DC-DC converter is also significantly reduced, the available horsepower of higher percent is delivered to inverter or high-voltage load, the efficiency of charging-discharging controller is also improved largely thereupon like this, can make the maximizing efficiency of whole system.Control unit is not shown in the figures, and being connected between control unit and isolation DC-DC transducer adopts routine techniques.
In the embodiment of practical application, it is MPPT circuit that described charging-discharging controller can also include MPPT maximum power point tracking.
Take solar panel power supply system as example, in actual applications, important independent load is worked by mains supply conventionally, be connected with the output of inverter simultaneously, between independent load and electrical network and independent load and inverter output end, be conventionally connected with relay switch, when grid power blackout, inverter output end is electrically connected to independent load.Due to grid power blackout, inverter and electrical network can disconnect automatically, and solar panel will quit work.If the utility model charging-discharging controller is set in this system, make solar panel output, inverter input terminal connects the utility model charging-discharging controller input, charging-discharging controller output connects storage battery, when network operation, can utilize sufficient solar energy for charge in batteries, when grid cut-off, electrical network cuts off and is connected with inverter, now can utilize storage battery power supply in support, by the utility model charging-discharging controller, provide a stable input power for inverter, inverter can normally be worked, thereby solar panel also can be worked on, be independently important load power supply jointly.
Although the utility model has been described embodiment herein, coverage of the present utility model is not limited to this.On the contrary, the utility model is contained all technical schemes of falling in fact within the scope of the claims under all instructions on literal or in equivalents, as used soft switch technique ZVS and ZCS in circuit.Protection range of the present utility model is as the criterion with claims.
Claims (4)
1. a charging-discharging controller, it comprises input anode joint A, input cathode joint B, output head anode joint C, negative pole of output end joint D, also comprise that tape input rectifies utmost point a, input cathode b and output head anode c, the isolation DC-DC converter of negative pole of output end d, and the control unit being connected with isolation DC-DC converter, the input anode a of wherein said isolation DC-DC converter is electrically connected to input anode joint A, the input cathode b of isolation DC-DC converter is electrically connected to input cathode joint B, the output head anode c of isolation DC-DC converter is electrically connected to output head anode joint C, the negative pole of output end d of isolation DC-DC converter is electrically connected to negative pole of output end joint D, it is characterized in that: described isolation DC-DC converter also comprises the isolating transformer with primary coil and secondary coil, the first full-bridge circuit being electrically connected to isolating transformer primary coil, and the second full-bridge circuit being electrically connected to isolating transformer secondary coil, the turn ratio of wherein said isolating transformer primary coil and secondary coil is that n is than 1, wherein n is greater than 1.
2. charging-discharging controller as claimed in claim 1, is characterized in that: the input cathode b of described isolation DC-DC converter is electrically connected to output head anode joint C, and described negative pole of output end joint D is electrically connected to input cathode joint B.
3. charging-discharging controller as claimed in claim 1, is characterized in that: it is MPPT circuit that described charging-discharging controller also includes MPPT maximum power point tracking.
4. the charging-discharging controller as described in arbitrary claim in claim 1-3, it is characterized in that described charging-discharging controller has two kinds of mode of operations: the first mode of operation is that electric current is inputted from input positive and negative connector A, B, output positive and negative charge joint C, D output, i.e. voltage-dropping type mode of operation; The second mode of operation is that electric current is from output positive and negative charge joint C, D input, from input positive and negative connector A, B output, i.e. booster type mode of operation; These two kinds of mode of operations are selected to control by control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568387.1U CN203574396U (en) | 2013-09-13 | 2013-09-13 | Charge and discharge controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568387.1U CN203574396U (en) | 2013-09-13 | 2013-09-13 | Charge and discharge controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574396U true CN203574396U (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320568387.1U Expired - Lifetime CN203574396U (en) | 2013-09-13 | 2013-09-13 | Charge and discharge controller |
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| Country | Link |
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| CN (1) | CN203574396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490467A (en) * | 2013-09-13 | 2014-01-01 | 嘉兴凯希电子有限公司 | Charging and discharging controller |
-
2013
- 2013-09-13 CN CN201320568387.1U patent/CN203574396U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490467A (en) * | 2013-09-13 | 2014-01-01 | 嘉兴凯希电子有限公司 | Charging and discharging controller |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
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| CX01 | Expiry of patent term |