CN218335398U - Non-isolated power exchange cabinet device - Google Patents
Non-isolated power exchange cabinet device Download PDFInfo
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- CN218335398U CN218335398U CN202121608601.2U CN202121608601U CN218335398U CN 218335398 U CN218335398 U CN 218335398U CN 202121608601 U CN202121608601 U CN 202121608601U CN 218335398 U CN218335398 U CN 218335398U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The embodiment of the utility model provides a non-isolated form trades electric cabinet device, trade electric cabinet device and include boost type power factor correction circuit, at least one isolated form direct current/direct current converting circuit, at least one non-isolated form direct current/direct current converting circuit and controller; the boost power factor correction circuit is used for rectifying and boosting the alternating-current input power supply; the isolated direct current/direct current conversion circuit is used for electrical isolation and direct current conversion; the non-isolated DC/DC conversion circuit is used for performing DC conversion to generate a constant voltage or a constant current, and the controller is connected with the boost type power factor correction circuit, the isolated DC/DC conversion circuit and the non-isolated DC/DC conversion circuit. The embodiment of the utility model provides a system is simple, design cost is low, and the volume and the weight of trading the electric cabinet device are less relatively, simultaneously, have reduced the no-load loss of trading the normal during operation of electric cabinet device, have improved operation economic benefits.
Description
Technical Field
The embodiment of the utility model provides a battery charging field, in particular to non-isolated form trades electric cabinet device.
Background
The power changing cabinet device can charge a plurality of storage batteries simultaneously, and currently, in the power changing cabinet device, the storage batteries are charged in a one-to-one charging mode by adopting a plurality of independent charging modules. The charging module generally comprises a boost power factor correction circuit, an isolated direct current/direct current conversion circuit and a non-isolated direct current/direct current conversion circuit, N charging modules are required to be configured for a battery changing cabinet device with N storage batteries, and the structure of each charging module is the same, so that the device cost is high due to circuit repetition, the system design is complex, in addition, when the battery changing cabinet device works, because each charging module is in a normal working state, each charging module has certain no-load loss, and the no-load loss of the battery changing cabinet device with the N charging modules is N times of that of a single charging module.
Disclosure of Invention
An embodiment of the utility model provides a purpose provides a non-isolated form cabinet device that trades electricity for system design is simple, cost reduction, and reduces the space consumption.
In order to solve the above technical problem, an embodiment of the present invention adopts a technical solution that: the non-isolated power conversion cabinet device comprises a boost power factor correction circuit, at least one isolated direct current/direct current conversion circuit, at least one non-isolated direct current/direct current conversion circuit and a controller;
the first end of the boost type power factor correction circuit is connected with an alternating current input power supply, and the second end of the boost type power factor correction circuit is connected with the first end of the isolation type direct current/direct current conversion circuit and used for rectifying and boosting the alternating current input power supply;
the second end of the isolated direct current/direct current conversion circuit is connected with the first end of the non-isolated direct current/direct current conversion circuit;
the second end of the non-isolated direct current/direct current conversion circuit is used for being connected with the storage battery and performing direct current conversion to generate a constant voltage or a constant current;
the controller is connected with the boost type power factor correction circuit, the isolation type direct current/direct current conversion circuit and the non-isolation type direct current/direct current conversion circuit.
In some embodiments, the boost-type power factor correction circuit includes a first rectification circuit, a first filter circuit, and a first boost circuit, a first end of the first rectification circuit is connected to the ac input power source, a second end of the first rectification circuit is connected to a first end of the first filter circuit, a second end of the first filter circuit is connected to a first end of the first boost circuit, and a second end of the first boost circuit is connected to a first end of the isolated dc/dc conversion circuit.
In some embodiments, the boost-type power factor correction circuit further comprises a first control circuit, a first driving circuit, and an enabling circuit;
the enabling circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first switch tube, a second switch tube and an optical coupler, the first control circuit comprises a second controller, and the first driving circuit comprises a third switch tube, a fourth switch tube, a sixth resistor and a seventh resistor;
the first end of the first resistor is connected with the controller, the second end of the first resistor is connected with the first end of the first switch tube, the second end of the first switch tube is respectively connected with the first end of the second resistor and the second end of the optocoupler, the third end of the first switch tube is grounded, the second end of the second resistor is respectively connected with the first end of the optocoupler and the first end of the third resistor, the second end of the third resistor is connected with an external power supply, the third end of the optocoupler is respectively connected with the first end of the fourth resistor, the first end of the fifth resistor and the first end of the second switch tube, the fourth end of the optocoupler is respectively connected with the second end of the fourth resistor and the third end of the second switch tube and is grounded, and the second end of the second switch tube is connected with the first end of the second controller;
the first end of the sixth resistor is connected with the second end of the second controller, the second end of the sixth resistor is connected with the third end of the third switching tube and the third end of the fourth switching tube respectively, the second end of the third switching tube is connected with an external power supply, the first end of the third switching tube is connected with the first end of the seventh resistor and the first end of the fourth switching tube respectively, and the first end of the fourth switching tube is grounded.
In some embodiments, the boost power factor correction circuit further comprises an anti-surge circuit and a voltage sampling circuit;
the first end of the anti-surge circuit is connected with the controller, the second end of the anti-surge circuit is connected with the boost type power factor correction circuit, the first end of the voltage sampling circuit is connected with the boost type power factor correction circuit, and the second end of the voltage sampling circuit is connected with the controller;
the surge protection circuit comprises an eighth resistor, a fifth switch tube and a relay, the relay comprises a first switch and a coil, the first end of the fifth switch tube is connected with the first end of the eighth resistor, the second end of the fifth switch tube is connected with the coil, the third end of the fifth switch tube is grounded, the second end of the eighth resistor is connected with an external power supply, the first end of the first switch is connected with the alternating current input power supply, and the second end of the first switch is connected with the input end of the power factor correction circuit.
In some embodiments, the isolated dc/dc conversion circuit includes an inverter circuit, a first isolation circuit, and a second rectification circuit;
the first end of the inverter circuit is connected with the second end of the power factor correction circuit, the second end of the inverter circuit is connected with the first end of the first isolation circuit, the second end of the first isolation circuit is connected with the first end of the second rectification circuit, and the second end of the second rectification circuit is connected with the first end of the non-isolation type direct current/direct current converter.
In some embodiments, the first isolation circuit includes a first transformer, a primary side of the first transformer is connected to the second end of the inverter circuit, and a secondary side of the first transformer is connected to the first end of the second rectification circuit.
In some embodiments, the second rectifying circuit includes a first diode, a second diode, a third diode, a fourth diode, a first capacitor, and a second capacitor;
the anode of the first diode is connected to the second end of the isolation circuit, the cathode of the first diode is respectively connected to the cathode of the second diode, the cathode of the third diode, the cathode of the fourth diode, the first end of the first capacitor, the first end of the second capacitor and the first end of the non-isolation type direct current/direct current conversion circuit, the anode of the second diode is connected to the second end of the isolation circuit, the anode of the third diode is connected to the second end of the isolation circuit, the anode of the fourth diode is connected to the second end of the isolation circuit, and the second end of the first capacitor is respectively connected to the second end of the second capacitor, the second end of the isolation circuit and the first end of the non-isolation type direct current/direct current conversion circuit.
In some embodiments, the isolated dc/dc conversion circuit further includes a second driving circuit, a current sampling circuit, and an overcurrent protection circuit;
the first end of the second driving circuit is connected with the controller, the second end of the second driving circuit is connected with the third end of the inverter circuit and used for driving the inverter circuit to work, the first end of the current sampling circuit is connected with the second end of the inverter circuit, the second end of the current sampling circuit is connected with the first end of the overcurrent protection circuit, the second end of the overcurrent protection circuit is connected with the controller, and the overcurrent protection circuit is used for sending different level signals to the controller according to signals of the second end of the current sampling circuit.
In some embodiments, the second driving circuit includes a first driving chip, a second transformer, a sixth switching tube, a seventh switching tube, an eighth switching tube, a ninth switching tube, a tenth switching tube and an eleventh switching tube, the secondary side of the second transformer includes two windings, and the overcurrent protection circuit includes a first comparator, a tenth resistor, an eleventh resistor, a twelfth resistor and a thirteenth resistor;
the first end of the first driving chip is connected with the controller, the second end of the first driving chip is respectively connected with the first end of the sixth switching tube and the first end of the eighth switching tube, the third end of the first driving chip is respectively connected with the first end of the seventh switching tube and the first end of the ninth switching tube, the second end of the sixth switching tube is connected with the second end of the seventh switching tube, the third end of the sixth switching tube is respectively connected with the third end of the eighth switching tube and the first end of the primary side of the second transformer, the third end of the seventh switching tube is respectively connected with the third end of the ninth switching tube and the second end of the primary side of the second transformer, and the second end of the eighth switching tube is connected with the second end of the ninth switching tube and grounded;
the first end of the secondary side first winding of the second transformer is respectively connected with the second end of the tenth switching tube and the third end of the inverter circuit, the second end of the secondary side first winding of the second transformer is respectively connected with the first end and the third end of the tenth switching tube, the first end of the secondary side second winding of the second transformer is respectively connected with the second end of the eleventh switching tube and the third end of the inverter circuit, and the second end of the secondary side second winding of the second transformer is respectively connected with the first end and the third end of the eleventh switching tube;
the first end of the ninth resistor is connected with the second end of the current sampling circuit, the second end of the ninth resistor is connected with the positive electrode input end of the first comparator, the first end of the tenth resistor is connected with a first reference voltage, the second end of the tenth resistor is respectively connected with the first end of the eleventh resistor, the negative electrode input end of the first comparator and the first end of the twelfth resistor, the second end of the eleventh resistor is grounded, and the second end of the twelfth resistor is respectively connected with the output end of the first comparator and the controller.
In some embodiments, the non-isolated dc/dc conversion circuit includes a third driving circuit, a twelfth switching tube, a fifth diode, a first inductor, and a third capacitor, where the third driving circuit includes a thirteenth switching tube and a fourteenth switching tube;
the first end of the thirteenth switching tube is connected to the controller and the first end of the fourteenth switching tube respectively, the second end of the thirteenth switching tube is connected to an external power source, the third end of the thirteenth switching tube is connected to the third end of the fourteenth switching tube and the third end of the twelfth switching tube respectively, the first end of the twelfth switching tube is connected to the second end of the isolated dc/dc conversion circuit, the third end of the twelfth switching tube is connected to the cathode of the fifth diode and the first end of the first inductor respectively, the anode of the fifth diode is connected to the second end of the third capacitor and the cathode of the storage battery respectively, and the second end of the first inductor is connected to the first end of the third capacitor and the anode of the storage battery respectively.
The utility model discloses embodiment's beneficial effect is: be different from prior art, the utility model provides a non-isolated form trades electric cabinet device, the device includes boost type power factor correction circuit, at least one isolated form direct current/direct current converting circuit and at least one non-isolated form direct current/direct current converting circuit, through suitable design, the partial circuit that the function is the same in with a plurality of charging modules merges into a set of realization, thereby reduce the device, the complexity of the system is reduced, and the cost is reduced cuts down the volume and the weight of trading electric cabinet device, and simultaneously, reduce the no-load loss of the normal during operation of trading electric cabinet device, improve operation economic benefits.
Drawings
One or more embodiments are illustrated by the accompanying figures in the drawings that correspond thereto and are not to be construed as limiting the embodiments, wherein elements/modules and steps having the same reference numerals are represented by like elements/modules and steps, unless otherwise specified, and the drawings are not to scale.
Fig. 1 is a schematic structural diagram of a non-isolated battery replacing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another non-isolated power distribution cabinet device according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a boost power factor correction circuit in a non-isolated battery replacement device according to an embodiment of the present invention;
fig. 4 is a schematic circuit structure diagram of an isolated dc/dc conversion circuit in a non-isolated battery replacement device according to an embodiment of the present invention;
fig. 5 is a schematic circuit structure diagram of a non-isolated dc/dc conversion circuit in a non-isolated battery replacing device according to an embodiment of the present invention.
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present application, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the application. All falling within the scope of protection of the present application.
In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that, if not conflicting, various features of the embodiments of the present invention may be combined with each other and all are within the scope of protection of the present application. In addition, although the functional blocks are divided in the device diagram, in some cases, the blocks may be divided differently from those in the device. Further, the terms "first," "second," and the like, as used herein, do not limit the data and the execution order, but merely distinguish the same items or similar items having substantially the same functions and actions.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a structure of a non-isolated battery replacing device 100 according to an embodiment of the present invention, which includes a boost power factor correction circuit 10, an isolated dc/dc conversion circuit 20, at least one non-isolated dc/dc conversion circuit 30, and a controller 40;
a first end of the boost-type power factor correction circuit 10 is connected to an ac input power source, and a second end of the boost-type power factor correction circuit 10 is connected to a first end of the isolated dc/dc conversion circuit 20, and is configured to rectify, filter, and boost the ac input power source, thereby providing a stable dc output voltage;
the second end of the isolated dc/dc conversion circuit 20 is connected to the first end of the non-isolated dc/dc conversion circuit 30, and is configured to electrically isolate the battery from the ac input voltage and perform dc conversion, and provide a dc bus voltage of a suitable voltage level to the subsequent circuit;
the second end of the non-isolated dc/dc conversion circuit 30 is connected to a storage battery for performing dc conversion to generate a constant voltage or a constant current, thereby implementing charging of the storage battery.
The controller 40 is connected to the boost-type power factor correction circuit 10, the isolated dc/dc conversion circuit 20, and the non-isolated dc/dc conversion circuit 30, and is configured to control normal operations of the boost-type power factor correction circuit 10, the isolated dc/dc conversion circuit 20, and the non-isolated dc/dc conversion circuit 30.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating a structure of another non-isolated battery swapping cabinet apparatus 1000 according to an embodiment of the present invention, which includes a boost power factor correction circuit 100, at least one isolated dc/dc conversion circuit 200, at least one non-isolated dc/dc conversion circuit 300, and a controller 400;
a first end of the boost type power factor correction circuit 100 is connected with an alternating current input power supply, and a second end of the boost type power factor correction circuit 100 is connected with a first end of the isolation type direct current/direct current conversion circuit 200 and is used for rectifying, filtering and boosting the alternating current input power supply so as to provide stable direct current output voltage;
the second end of the isolated dc/dc conversion circuit 200 is connected to the first end of the non-isolated dc/dc conversion circuit 300, and is configured to electrically isolate the battery from the ac input voltage and perform dc conversion, and provide a dc bus voltage of an appropriate voltage level to the subsequent circuit;
the second end of the non-isolated dc/dc converting circuit 300 is connected to a storage battery for performing dc conversion to generate a constant voltage or a constant current, thereby implementing charging of the storage battery.
The controller 400 is connected to the boost-type power factor correction circuit 100, the isolated dc/dc conversion circuit 200, and the non-isolated dc/dc conversion circuit 300, and is configured to control normal operations of the boost-type power factor correction circuit 100, the isolated dc/dc conversion circuit 200, and the non-isolated dc/dc conversion circuit 300.
The utility model provides a non-isolated form trades electric cabinet device, the device includes power factor correction circuit, at least one isolated form direct current/direct current converting circuit and at least one non-isolated form direct current/direct current converting circuit, through suitable design, the partial circuit that the function is the same in the module that will charge merges into a set of realization, thereby reduce the device, the lowering system complexity, reduce cost, reduce the volume and the weight of trading electric cabinet device, and simultaneously, reduce the no-load loss of the normal during operation of trading electric cabinet device, improve operation economic benefits.
In some embodiments, referring to fig. 3, the boost-type power factor correction circuit 10 includes a first rectification circuit, a first filter circuit and a first boost circuit, a first end of the first rectification circuit is connected to the ac input power, a second end of the first rectification circuit is connected to a first end of the first filter circuit, a second end of the first filter circuit is connected to a first end of the first boost circuit, and a second end of the first boost circuit is connected to a first end of the isolated dc/dc conversion circuit 20. It should be noted that, the structures of the first rectifying circuit, the first filter circuit, and the first boost circuit are prior art, and are not described herein again, please refer to prior art.
In some embodiments, referring to fig. 3 again, the boost pfc circuit 10 further includes a first control circuit, a first driving circuit and an enabling circuit;
the enabling circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first switch tube Q1, a second switch tube Q2 and an optocoupler U1, the first control circuit comprises a second controller, and the first driving circuit comprises a sixth resistor R6, a seventh resistor R7, a third switch tube Q3 and a fourth switch tube Q4;
the first end connection director of first resistance R1, the first end of first switch tube Q1 is connected to first resistance R1's second end, second resistance R2's first end and opto-coupler U1's second end are connected respectively to first switch tube Q1's second end, first diode Q1's third end ground connection, opto-coupler U1's first end and third resistance R3's first end are connected respectively to second resistance R2's second end, the power VCC is connected to third resistance R3's second end, fourth resistance R4's first end is connected respectively to opto-coupler U1's third end, fifth resistance R5's first end and second switch tube Q2's first end, fourth resistance R4's second end is connected respectively to opto-coupler U1's fourth end, second switch tube Q2's third end and ground connection.
The second end of the second switch tube Q2 is connected with the first end of the second controller, the second end of the second controller is connected with the first end of a sixth resistor R6, the second end of the sixth resistor R6 is respectively connected with the third end of a third switch tube Q3 and the third end of a fourth switch tube Q4, the second end of the third switch tube Q3 is connected with a power supply VCC, the first end of the third switch tube Q3 is respectively connected with the first end of a seventh resistor R7 and the first end of the fourth switch tube Q4, and the first end of the third switch tube Q3 is grounded.
In some embodiments, the first switch tube Q1, the second switch tube Q2 and the fourth switch tube Q4 are NPN transistors, the third switch tube Q3 is a PNP transistor, a first end of the switch tube corresponds to a base of the transistor, a second end of the switch tube corresponds to a collector of the transistor, and a third end of the switch tube corresponds to an emitter of the transistor.
In some embodiments, referring to fig. 3 again, the boost pfc circuit 10 further includes an anti-surge circuit and a voltage sampling circuit;
the first end of the anti-surge circuit is connected with the controller, the second end of the anti-surge circuit is connected with the boost type power factor correction circuit, the first end of the voltage sampling circuit is connected with the boost type power factor correction circuit, and the second end of the voltage sampling circuit is connected with the controller;
the anti-surge circuit comprises an eighth resistor R8, a relay and a fifth switching tube Q5, wherein the relay comprises a switch S1 and a coil;
the first end of the switch S1 is connected to the positive electrode of the ac input power supply, the second end of the switch S1 is connected to the boost power factor correction circuit 10, the third end of the switch S1 is connected to the first end of the coil, the second end of the coil is connected to the second end of the fifth switch tube Q5, the first end of the fifth switch tube Q5 is connected to the first end of the eighth resistor R8, and the second end of the eighth resistor R8 is connected to the power supply VCC.
It should be noted that the structure of the voltage sampling circuit is the prior art, and details are not repeated herein, please refer to the prior art.
In some embodiments, referring to fig. 4, the isolated dc/dc conversion circuit 20 includes an inverter circuit, a first isolation circuit and a second rectification circuit;
the first end of the inverter circuit is connected to the second end of the power factor correction circuit, the second end of the inverter circuit is connected to the first end of the first isolation circuit, the second end of the first isolation circuit is connected to the first end of the second rectification circuit, and the second end of the second rectification circuit is connected to the first end of the non-isolated dc/dc conversion circuit 30.
It should be noted that the structure of the inverter circuit is the prior art, and details are not repeated herein, please refer to the prior art.
In some embodiments, referring to fig. 4 again, the isolated dc/dc converter circuit 20 further includes a second driving circuit, a current sampling circuit and an overcurrent protection circuit;
the first end of the second drive circuit is connected with the controller 40, the second end of the second drive circuit is connected with the main power circuit, the first end of the current sampling circuit is connected with the main power circuit, the second end of the current sampling circuit is connected with the first end of the overcurrent protection circuit, and the second end of the overcurrent protection circuit is connected with the controller 40.
In some embodiments, referring to fig. 4 again, the first isolation circuit includes a first transformer T1, the second rectification circuit includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first capacitor C1 and a second capacitor C2;
the primary side of the first transformer T1 is connected with an inverter circuit, the first end of the secondary side of the first transformer T1 is connected with the anode of a first diode D1, the second end of the secondary side of the first transformer T1 is respectively connected with the fifth end of the secondary side of the first transformer T1, the second end of a first capacitor C1, the second end of a second capacitor C2 and a non-isolated DC/DC conversion circuit, the third end of the secondary side of the first transformer T1 is connected with the anode of a second diode D2, the fourth end of the secondary side of the first transformer T1 is connected with the anode of a third diode D3, and the sixth end of the secondary side of the first transformer T1 is connected with the anode of a fourth diode D4.
The cathode of the first diode D1 is respectively connected with the cathode of the second diode D2, the cathode of the third diode D3, the cathode of the fourth diode D4, the first end of the first capacitor C1, the first end of the second capacitor C2 and the non-isolated DC/DC conversion circuit.
In some embodiments, referring to fig. 4 again, the second driving circuit includes a first driving chip, a sixth switching tube Q6, a seventh switching tube Q7, an eighth switching tube Q8, a ninth switching tube Q9, a tenth switching tube Q10, an eleventh switching tube Q11, and a second transformer T2, and the overcurrent protection circuit includes a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, and a first comparator U2;
the first end of the first driving chip is connected with the controller, the second end of the first driving chip is respectively connected with the first end of the sixth switching tube Q6 and the first end of the eighth switching tube Q8, the second end of the first driving chip is respectively connected with the first end of the seventh switching tube Q7 and the first end of the ninth switching tube Q9, the second end of the sixth switching tube Q6 is respectively connected with the second end of the seventh switching tube Q7 and the power VCC, the third end of the sixteenth switching tube Q6 is respectively connected with the third end of the eighth switching tube Q8 and the first end of the primary side of the second transformer T2, the third end of the seventh switching tube Q7 is respectively connected with the third end of the eighth switching tube Q8 and the second end of the primary side of the second transformer T2, and the second end of the seventh switching tube Q7 is connected with the second end of the ninth switching tube Q9 and grounded.
A first secondary end of the second transformer T2 is connected to the second end of the tenth switching tube Q10 and the inverter circuit, a second secondary end of the second transformer T2 is connected to the first end and the third end of the tenth switching tube Q10, a third secondary end of the second transformer T2 is connected to the second end of the eleventh switching tube Q11 and the inverter, and a fourth secondary end of the second transformer T2 is connected to the first end and the third end of the eleventh switching tube Q11.
In some embodiments, the sixth switching tube Q6, the eighth switching tube Q8, the ninth switching tube Q10 and the eleventh switching tube Q11 are NPN transistors, the seventh switching tube Q7 and the ninth switching tube Q9 are PNP transistors, a first end of the switching tube corresponds to a base of the transistor, a second end of the switching tube corresponds to a collector of the transistor, and a third end of the switching tube corresponds to an emitter of the transistor.
The first end of the voltage sampling circuit is connected with the inverter circuit, the second end of the voltage sampling circuit is connected with the second end of the ninth resistor R9 and is connected with the positive input end of the first comparator U2, the first end of the tenth resistor R10 is connected with the first reference voltage, the second end of the tenth resistor R10 is respectively connected with the first end of the eleventh resistor R11, the negative input end of the first comparator U2 and the first end of the twelfth resistor R12, the second end of the eleventh resistor R11 is grounded, and the second end of the twelfth resistor R12 is respectively connected with the output end of the first comparator U2 and the controller 40.
In some embodiments, referring to fig. 5, the non-isolated dc/dc conversion circuit 30 includes a third driving circuit, a third capacitor C3, a twelfth switch Q12, a first inductor L1, and a fifth diode D5, where the third driving circuit includes a thirteenth switch Q13 and a fourteenth switch Q14;
a first end of a thirteenth switching tube Q13 is connected to the controller and a first end of a fourteenth switching tube Q14, a second end of the thirteenth switching tube Q13 is connected to the power supply VCC, a third end of the thirteenth switching tube Q13 is connected to a third end of the fourteenth switching tube Q14 and a second end of a twelfth switching tube Q12, a first end of the twelfth switching tube Q12 is connected to the isolated dc/dc conversion circuit 20, a third end of the twelfth switching tube Q12 is connected to a cathode of a fifth diode D5 and a first end of a first inductor L1, a second end of the first inductor L1 is connected to a first end of a third capacitor C3 and an anode of the battery, and an anode of the fifth diode D5 is connected to the isolated dc/dc conversion circuit 20 and a cathode of the battery.
In some embodiments, the twelfth switch Q12 is an NMOS transistor, a first terminal of the switch Q12 corresponds to a drain of the NMOS transistor, a second terminal of the switch Q12 corresponds to a gate of the NMOS transistor, a third terminal of the switch Q12 corresponds to a source of the NMOS transistor,
the thirteenth switching tube Q13 is an NPN transistor, the fourteenth switching tube Q14 is a PNP transistor, the first end of the switching tube corresponds to the base of the transistor, the second end of the switching tube corresponds to the collector of the transistor, and the third end of the switching tube corresponds to the emitter of the transistor.
It should be noted that the above-described embodiments are merely illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. A non-isolated type power conversion cabinet device is characterized by comprising a boost type power factor correction circuit, at least one isolated type direct current/direct current conversion circuit, at least one non-isolated type direct current/direct current conversion circuit and a controller;
the first end of the boost type power factor correction circuit is connected with an alternating current input power supply, and the second end of the boost type power factor correction circuit is connected with the first end of the isolation type direct current/direct current conversion circuit and used for rectifying and boosting the alternating current input power supply;
the second end of the isolated direct current/direct current conversion circuit is connected with the first end of the non-isolated direct current/direct current conversion circuit;
the second end of the non-isolated direct current/direct current conversion circuit is used for being connected with a storage battery and is used for performing direct current conversion to generate a constant voltage or a constant current;
the controller is connected with the boost type power factor correction circuit, the isolated direct current/direct current conversion circuit and the non-isolated direct current/direct current conversion circuit.
2. The non-isolated battery swapping cabinet device according to claim 1, wherein the boost power factor correction circuit comprises a first rectification circuit, a first filter circuit and a first voltage boost circuit, a first end of the first rectification circuit is connected to the ac input power supply, a second end of the first rectification circuit is connected to a first end of the first filter circuit, a second end of the first filter circuit is connected to a first end of the first voltage boost circuit, and a second end of the first voltage boost circuit is connected to a first end of the isolated dc/dc conversion circuit.
3. The non-isolated battery swapping cabinet device of claim 2, wherein the boost power factor correction circuit further comprises a first control circuit, a first driving circuit, and an enabling circuit;
the enabling circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first switch tube, a second switch tube and an optical coupler, the first control circuit comprises a second controller, and the first driving circuit comprises a third switch tube, a fourth switch tube, a sixth resistor and a seventh resistor;
a first end of the first resistor is connected with the controller, a second end of the first resistor is connected with a first end of the first switch tube, a second end of the first switch tube is respectively connected with a first end of the second resistor and a second end of the optocoupler, a third end of the first switch tube is grounded, a second end of the second resistor is respectively connected with a first end of the optocoupler and a first end of the third resistor, a second end of the third resistor is connected with an external power supply, a third end of the optocoupler is respectively connected with a first end of the fourth resistor, a first end of the fifth resistor and a first end of the second switch tube, a fourth end of the optocoupler is respectively connected with a second end of the fourth resistor and a third end of the second switch tube and is grounded, and a second end of the second switch tube is connected with a first end of the second controller;
the first end of the sixth resistor is connected with the second end of the second controller, the second end of the sixth resistor is respectively connected with the third end of the third switch tube and the third end of the fourth switch tube, the second end of the third switch tube is connected with an external power supply, the first end of the third switch tube is respectively connected with the first end of the seventh resistor and the first end of the fourth switch tube, and the first end of the fourth switch tube is grounded.
4. The non-isolated battery swapping cabinet device of claim 3, wherein the boost power factor correction circuit further comprises an anti-surge circuit and a voltage sampling circuit;
the first end of the anti-surge circuit is connected with the controller, the second end of the anti-surge circuit is connected with the boost type power factor correction circuit, the first end of the voltage sampling circuit is connected with the boost type power factor correction circuit, and the second end of the voltage sampling circuit is connected with the controller;
the surge protection circuit comprises an eighth resistor, a fifth switch tube and a relay, the relay comprises a first switch and a coil, the first end of the fifth switch tube is connected with the first end of the eighth resistor, the second end of the fifth switch tube is connected with the coil, the third end of the fifth switch tube is grounded, the second end of the eighth resistor is connected with an external power supply, the first end of the first switch is connected with the alternating current input power supply, and the second end of the first switch is connected with the input end of the power factor correction circuit.
5. The non-isolated battery swapping cabinet device according to claim 1, wherein the isolated dc/dc conversion circuit comprises an inverter circuit, a first isolation circuit and a second rectification circuit;
the first end of the inverter circuit is connected with the second end of the power factor correction circuit, the second end of the inverter circuit is connected with the first end of the first isolation circuit, the second end of the first isolation circuit is connected with the first end of the second rectification circuit, and the second end of the second rectification circuit is connected with the first end of the non-isolation type direct current/direct current converter.
6. The non-isolated battery swapping cabinet device according to claim 5, wherein the first isolation circuit comprises a first transformer, a primary side of the first transformer is connected to the second end of the inverter circuit, and a secondary side of the first transformer is connected to the first end of the second rectification circuit.
7. The non-isolated charging cabinet device according to claim 5, wherein the second rectification circuit comprises a first diode, a second diode, a third diode, a fourth diode, a first capacitor and a second capacitor;
the anode of the first diode is connected to the second end of the isolation circuit, the cathode of the first diode is respectively connected to the cathode of the second diode, the cathode of the third diode, the cathode of the fourth diode, the first end of the first capacitor, the first end of the second capacitor and the first end of the non-isolation type DC/DC conversion circuit, the anode of the second diode is connected to the second end of the isolation circuit, the anode of the third diode is connected to the second end of the isolation circuit, the anode of the fourth diode is connected to the second end of the isolation circuit, and the second end of the first capacitor is respectively connected to the second end of the second capacitor, the second end of the isolation circuit and the first end of the non-isolation type DC/DC conversion circuit.
8. The non-isolated battery swapping cabinet device according to claim 5, wherein the isolated DC/DC conversion circuit further comprises a second driving circuit, a current sampling circuit and an overcurrent protection circuit;
the first end of the second driving circuit is connected with the controller, the second end of the second driving circuit is connected with the third end of the inverter circuit and used for driving the inverter circuit to work, the first end of the current sampling circuit is connected with the second end of the inverter circuit, the second end of the current sampling circuit is connected with the first end of the overcurrent protection circuit, the second end of the overcurrent protection circuit is connected with the controller, and the overcurrent protection circuit is used for sending different level signals to the controller according to signals of the second end of the current sampling circuit.
9. The non-isolated battery replacement device according to claim 8, wherein the second driving circuit comprises a first driving chip, a second transformer, a sixth switching tube, a seventh switching tube, an eighth switching tube, a ninth switching tube, a tenth switching tube and an eleventh switching tube, a secondary side of the second transformer comprises two windings, and the overcurrent protection circuit comprises a first comparator, a tenth resistor, an eleventh resistor, a twelfth resistor and a thirteenth resistor;
the first end of the first driving chip is connected with the controller, the second end of the first driving chip is respectively connected with the first end of the sixth switching tube and the first end of the eighth switching tube, the third end of the first driving chip is respectively connected with the first end of the seventh switching tube and the first end of the ninth switching tube, the second end of the sixth switching tube is connected with the second end of the seventh switching tube, the third end of the sixth switching tube is respectively connected with the third end of the eighth switching tube and the first end of the primary side of the second transformer, the third end of the seventh switching tube is respectively connected with the third end of the ninth switching tube and the second end of the primary side of the second transformer, and the second end of the eighth switching tube is connected with the second end of the ninth switching tube and grounded;
a first end of a secondary side first winding of the second transformer is connected with a second end of the tenth switching tube and a third end of the inverter circuit respectively, a second end of the secondary side first winding of the second transformer is connected with a first end and a third end of the tenth switching tube respectively, a first end of a secondary side second winding of the second transformer is connected with a second end of the eleventh switching tube and a third end of the inverter circuit respectively, and a second end of a secondary side second winding of the second transformer is connected with a first end and a third end of the eleventh switching tube respectively;
the first end of a ninth resistor is connected with the second end of the current sampling circuit, the second end of the ninth resistor is connected with the positive electrode input end of the first comparator, the first end of a tenth resistor is connected with a first reference voltage, the second end of the tenth resistor is respectively connected with the first end of the eleventh resistor, the negative electrode input end of the first comparator and the first end of the twelfth resistor, the second end of the eleventh resistor is grounded, and the second end of the twelfth resistor is respectively connected with the output end of the first comparator and the controller.
10. The non-isolated battery replacement device according to claim 1, wherein the non-isolated dc/dc conversion circuit comprises a third driving circuit, a twelfth switching tube, a fifth diode, a first inductor, and a third capacitor, and the third driving circuit comprises a thirteenth switching tube and a fourteenth switching tube;
the first end of the thirteenth switching tube is connected to the controller and the first end of the fourteenth switching tube respectively, the second end of the thirteenth switching tube is connected to an external power source, the third end of the thirteenth switching tube is connected to the third end of the fourteenth switching tube and the third end of the twelfth switching tube respectively, the first end of the twelfth switching tube is connected to the second end of the isolated dc/dc conversion circuit, the third end of the twelfth switching tube is connected to the cathode of the fifth diode and the first end of the first inductor respectively, the anode of the fifth diode is connected to the second end of the third capacitor and the cathode of the storage battery respectively, and the second end of the first inductor is connected to the first end of the third capacitor and the anode of the storage battery respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121608601.2U CN218335398U (en) | 2021-07-14 | 2021-07-14 | Non-isolated power exchange cabinet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121608601.2U CN218335398U (en) | 2021-07-14 | 2021-07-14 | Non-isolated power exchange cabinet device |
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| Publication Number | Publication Date |
|---|---|
| CN218335398U true CN218335398U (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121608601.2U Active CN218335398U (en) | 2021-07-14 | 2021-07-14 | Non-isolated power exchange cabinet device |
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| CN (1) | CN218335398U (en) |
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- 2021-07-14 CN CN202121608601.2U patent/CN218335398U/en active Active
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