CN221227202U - High-voltage direct-current charger with energy warehouse - Google Patents
High-voltage direct-current charger with energy warehouse Download PDFInfo
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- CN221227202U CN221227202U CN202322552641.5U CN202322552641U CN221227202U CN 221227202 U CN221227202 U CN 221227202U CN 202322552641 U CN202322552641 U CN 202322552641U CN 221227202 U CN221227202 U CN 221227202U
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- 238000007600 charging Methods 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims description 16
- 239000013307 optical fiber Substances 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 8
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 238000004146 energy storage Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 structures Substances 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a high-voltage direct-current charger with an energy store, which relates to the technical field of charging and comprises the following components: the power supply battery and the inversion boosting rectification part are arranged in the box body, and the inversion boosting rectification part consists of two groups of inversion boosting rectification circuits and a control protection circuit which are symmetrically distributed; the inversion boosting rectification circuit comprises: the device comprises a filter, a phase-shifting full-bridge inverter, a high-frequency transformer and a voltage doubling circuit. The utility model can charge the power supply battery in batches when in idle time, disconnect the power supply battery from the power grid during working, use the stored energy in the power supply battery to provide electric energy for the charger, generate high-voltage direct current and charge the energy warehouse of the device, can meet the power supply requirements of a large number of charging cluster equipment, can optimize the power supply quality, reduce the construction cost of the power grid, enhance the internal anti-interference performance, reduce the loss of the power grid and the internal equipment, and can realize quick and safe charging.
Description
Technical Field
The utility model relates to the technical field of charging, in particular to a high-voltage direct-current charger with an energy store.
Background
The existing extra-large energy warehouse needs to be charged with consistency and symmetry, and when a huge amount of charging power supplies are started simultaneously, the following possibility exists: firstly, extremely high requirements are put on the load bearing performance of a power grid, the capacity of the power grid must be huge, otherwise, the construction cost of a large-scale transformer substation is greatly increased; secondly, the load loss of the power grid can be increased when the power grid is started at the same time, so that great damage and buried potential safety hazards are caused to the power grid; thirdly, the simultaneous starting can cause great harmonic interference to the power grid and damage to other electricity utilization units; fourth, based on the above reasons, it is certain that the charging speed of part of the chargers cannot reach the charging standard, and the consistency of the whole energy warehouse is affected; fifthly, when charging is started, the conduction voltages at the two ends of the trigger switch in the charging power supply are asymmetric and deflect, at this time, the trigger switch is possibly caused to act in an inconsistent way, and misoperation is possibly caused, so that the power grid equipment is damaged or the equipment is not charged in time to reach the standard, and therefore, the symmetry of the charging power supply is required to be strict.
Disclosure of utility model
The utility model aims to provide a high-voltage direct-current charger with an energy store, which optimizes the power supply quality by charging a power supply battery in batches, can greatly reduce the construction cost of a power grid, enhances the internal anti-interference performance and reduces the loss of the power grid and internal equipment.
In order to achieve the above object, the present utility model provides the following solutions:
A high voltage dc charger with energy store, comprising: the box body, a battery supply and an inversion boosting rectifying part are arranged in the box body, wherein,
The battery is used for storing electric energy and providing electric energy for the high-voltage direct-current charger;
the inversion boosting rectification part consists of two groups of inversion boosting rectification circuits and a control protection circuit which are symmetrically distributed;
The inversion boosting rectification circuit comprises:
the filter is used for reducing alternating current components in the pulsating direct current voltage and retaining the direct current components;
The phase-shifting full-bridge inverter comprises four power switching tubes and a freewheeling diode;
the high-frequency transformer is used for performing high-frequency DC/AC conversion, converting the low-voltage direct current into high-frequency low-voltage alternating current, boosting the high-frequency low-voltage alternating current through the high-frequency transformer, and rectifying the high-frequency low-voltage alternating current into high-voltage direct current through the high-frequency rectifying and filtering circuit;
the voltage doubling circuit is used for boosting the input voltage to reach a preset value;
The output end of the power supply is connected with the input end of the filter, and the filter, the phase-shifting full-bridge inverter, the high-frequency transformer and the voltage doubling circuit are sequentially connected; the voltage doubling circuit is connected with the output circuit and supplies power to the load;
and the phase-shifting full-bridge inverter and the voltage doubling circuit are respectively connected with the control protection circuit.
Further, the battery supply is a lithium iron titanate battery.
Furthermore, the power switch tube adopts IGBT.
Further, the control protection circuit includes: the phase-shifting control circuit, the auxiliary power supply, the input/output protection circuit, the fault output and reset circuit are used for controlling the phase of the switching circuit of the phase-shifting full-bridge inverter.
Furthermore, the high-voltage direct-current charger further comprises an optical fiber communication interface, the control protection circuit is connected with the optical fiber communication interface, the optical fiber communication interface is connected with an optical path control switch through a communication optical fiber, and the optical path control switch is connected with an upper computer in a communication mode.
Further, a heat dissipation air duct is arranged on the side wall of the box body.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects: the high-voltage direct current charger with the energy store provided by the utility model charges the power supply battery in batches when the charger is idle, and is disconnected from the power grid when the charger works, and the stored energy in the power supply battery is used for providing electric energy for the charger to generate high-voltage direct current so as to charge the energy store of the device; therefore, the power supply requirements of a large number of charging machine group devices can be met, the power supply quality of the battery can be optimized, the construction cost of a power grid is reduced, the internal anti-interference performance is enhanced, the loss of the power grid and the internal devices is reduced, and the safe and rapid charging is realized. The utility model also improves the trigger switch in the charging power supply, optimizes and promotes the trigger conduction, and avoids the problem that the misleading equipment is not timely charged and cannot reach the charging standard. The utility model adopts voltage doubling rectification to greatly simplify the design of the transformer, reduce output current ripple, disperse inductance heat consumption and facilitate synchronous rectification.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a high-voltage direct-current charger with an energy store according to an embodiment of the present utility model;
Fig. 2 is a schematic diagram of a high-voltage direct-current charger with an energy store according to an embodiment of the utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a high-voltage direct-current charger with an energy store, which optimizes the power supply quality by charging a power supply battery in batches, can greatly reduce the construction cost of a power grid, enhances the internal anti-interference performance and reduces the loss of the power grid and internal equipment.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 and fig. 2, a high-voltage direct-current charger with an energy store according to an embodiment of the present utility model includes: the box body, a battery supply and an inversion boosting rectifying part are arranged in the box body, wherein,
The battery is used for storing electric energy and providing electric energy for the high-voltage direct-current charger;
the inversion boosting rectification part consists of two groups of inversion boosting rectification circuits and a control protection circuit which are symmetrically distributed;
The inversion boosting rectification circuit comprises:
The filter is used for reducing alternating current components in the pulsating direct current voltage, retaining the direct current components, and reducing ripple waves in the output voltage more smoothly;
The phase-shifting full-bridge inverter comprises four power switching tubes and a freewheeling diode;
The high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency (10 kHz), is mainly used as a high-frequency switching power transformer in a high-frequency switching power supply, performs high-frequency DC/AC conversion, inverts low-voltage direct current into high-frequency low-voltage alternating current, and rectifies the high-frequency low-voltage alternating current into high-voltage direct current through a high-frequency rectifying and filtering circuit after the high-frequency low-voltage alternating current is boosted by the high-frequency transformer; in the embodiment, a ferrite core is adopted, the magnetic flux density is designed to be 2000Gs, the rated low-voltage input is 500V, PWM waves of 20kHz, the rated high-voltage output is 20kV, the low-voltage winding adopts a plurality of strands of entangled litz wires, the high-voltage die is a POM slot die, and the high-voltage package is vacuum-cast by epoxy resin.
The voltage doubling circuit is used for boosting the input voltage to reach a preset value;
The output end of the power supply is connected with the input end of the filter, and the filter, the phase-shifting full-bridge inverter, the high-frequency transformer and the voltage doubling circuit are sequentially connected; the voltage doubling circuit is connected with the output circuit and supplies power to the load;
and the phase-shifting full-bridge inverter and the voltage doubling circuit are respectively connected with the control protection circuit.
In this embodiment, the battery is a lithium iron titanate battery; therefore, the lithium iron phosphate battery can realize quick charge, has better safety performance than ternary lithium iron phosphate batteries, longer cycle life and stable working temperature range than other lithium batteries, provides stable direct current for equipment, and supplies power for other devices through the cooperation of an energy storage capacitor and a discharge load. In addition, the requirement for power supply of the power grid can be greatly reduced, the cost investment is greatly reduced, and particularly, the later maintenance cost is reduced; the battery is used as primary energy storage, the whole system has high autonomy, free energy sources, convenient transformation, flexible transportation and the like, and the system is a difficult-to-reach advantage of a fixed power supply mode of a power grid in the prior art.
In this embodiment, the control protection circuit includes: the phase-shifting control circuit, the auxiliary power supply, the input/output protection circuit, the fault output and reset circuit are used for controlling the phase of the switching circuit of the phase-shifting full-bridge inverter.
In this embodiment, the high-voltage direct current charger further includes an optical fiber communication interface, the control protection circuit is connected with the optical fiber communication interface, the optical fiber communication interface is connected with an optical path control switch through a communication optical fiber, and the optical path control switch is connected with the upper computer in a communication manner. The optical program-controlled exchanger is used for parallel transmission of information between each power supply and the exchanger, has a timely and accurate speed, can realize real-time monitoring of each power supply by an upper computer monitoring system, and realizes electrical isolation.
In this embodiment, a heat dissipation air duct is disposed on a side wall of the case.
In the embodiment, the power switch tube adopts an IGBT (insulated gate bipolar transistor), the GTR saturation voltage is reduced, the current carrying density is high, and the driving current is large; the MOSFET (metal-oxide semiconductor field effect transistor) has small driving power, high switching speed, large conduction voltage drop and small current carrying density. The IGBT combines the advantages of the two devices, and has small driving power and reduced saturation voltage. However, any power semiconductor switching device has certain drawbacks, and the IGBT may cause breakdown due to overvoltage/overcurrent of the collector and the emitter and overvoltage/overcurrent of the gate after a long time of use. Therefore, in this embodiment, a freewheeling diode is added to protect the device, and the voltage and the current are too large to reverse-turn on and breakdown. Thus, a phase-shifting full-bridge inverter circuit is formed, the shape of the circuit is like an H bridge, four switching tubes and a freewheeling diode are matched to form two pairs of bridge arms, the bridge arms are crossed in pairs and are conducted simultaneously, phase shift phase angles (0 DEG < phi <180 DEG) in signals are converted and output by changing the width of voltage pulses.
In this embodiment, the voltage doubling circuit is used for voltage doubling rectification, and uses the rectification and guiding functions of the diode to store the voltages on the respective capacitors respectively, and then connects them in series according to the principle of polarity addition to output a high voltage higher than the input voltage. The output voltage is divided into two-voltage, three-voltage and multiple-voltage rectifying circuits according to the output voltage which is more than the input voltage.
In this embodiment, the control and protection module realizes an integral control and protection circuit, including: the phase-shifting control circuit, an auxiliary power supply, an input/output protection circuit and a fault output and reset circuit.
In this embodiment, the control and protection module uses a high-end phase-shift control chip to control the phase of the switching circuit, and the control and protection module can work in both a voltage mode and a current mode and has the functions of overcurrent protection, soft start and the like.
The power supply adopts closed-loop control, and the whole system has good stability and dynamic response speed. The closed-loop control of the power supply system ensures the steady state of the output direct-current voltage, so that the power supply system has low output impedance and has good transient response speed; the method has strong robustness to uncertainty of circuit parameters. The feedback control can automatically correct the controlled quantity deviating from the given value, thereby inhibiting error disturbance caused by internal interference and external interference and realizing automatic control of the system. The closed loop control detects the output quantity in the control process, and transmits the output quantity to the input end to be compared with a given value, and the generated control signal is fed back to the input end to control the input quantity. And a current loop is added on a voltage loop of the phase-shifting full-bridge inverter, and the influence of load disturbance is weakened by means of the anti-interference performance of the current inner loop. In such a closed loop system, the current inner loop is controlled by the voltage outer loop, which is only responsible for the output voltage, and the current inner loop is then to monitor the transient variation of the output current.
In this embodiment, the phase-shifted full-bridge inverter further includes a resonant circuit for preventing harmonic interference of the switching tube, for example: the resonant inductor Lr has the function that the current of the inverter circuit is not zero after the power semiconductor switching tube on the leading bridge arm is turned off, so that energy is provided for the leading bridge arm to realize ZVS, and the switching tube on the lagging bridge arm is facilitated to realize ZVS; the resonance frequency of the circuit is 40kHz, which is slightly larger than twice of the chopping frequency of the IGBT, so that the aim of realizing zero current turn-off and zero voltage turn-on and improving the short circuit resistance of the power supply is achieved. The LC resonant link constitutes a load with a fixed impedance, and even if an external load is shorted, the internal inherent LC load is still current limited for the full bridge inverter. Series resonant converter principle, according to inverter switching frequencyAnd resonance frequency/>The charging power supply adopting the series resonant circuit has 3 working modes:
</2: current discontinuous operation mode (DCM);
/2＜/>＜/> : a current continuous operation mode (CCM);
＞/> : a current continuous operation mode (CCM) for enabling the circuit to work at/>, by adjusting the output pulse frequency of the control circuit /2＜/>＜/>A mode.
In the embodiment, multifunctional modules such as a battery, a filter, a phase-shifting full-bridge inverter, a high-frequency transformer, a voltage doubling circuit, data acquisition, state detection and the like are integrated and embedded in a small standardized box body; can be matched with an upper computer for remote control. The design principle of minimizing the external connection cable of the system is adopted, and other high-voltage external connection cables are not contained except the high-voltage coaxial cable connected with the load.
The working principle of the high-power direct-current high-voltage charger with the energy warehouse is as follows: after the mains supply is input, stable direct current is output through a power supply circuit to supply power, ripple waves in the voltage are large, and the ripple waves are filtered through a filter circuit, so that a smooth direct current voltage is obtained. The direct-current voltage is inverted through the phase-shifting full-bridge inverter circuit to generate high-frequency voltage, and the internal oscillating circuit carries out oscillation conversion on the voltage. Outputting a high-frequency (rectangular alternating current) voltage to a high-frequency transformer as a primary of a high-frequency step-up transformer, wherein the high-frequency step-up transformer performs primary step-up on the voltage; then the voltage is boosted to a preset value through a voltage doubling rectifying circuit, and the load is charged through an output circuit.
In a further embodiment, the high-power dc high-voltage charger with energy store further comprises:
High voltage output insulation protection module: the high-voltage cable and the aviation plug are customized and connected, so that connection reliability and enough creepage distance and air gap are ensured;
Isolation and security module: the optical fiber communication is adopted, so that the safety isolation between the control and the equipment is ensured;
Ground potential lifting protection: ground potential elevation means that a ground surface instantaneously generates a high potential due to a large current impact; the ground potential lifting can cause ground potential counterattack to damage electronic equipment in the ground potential lifting range; aiming at the ground potential lifting problem encountered in the use process of the power supply, the power supply is protected by adopting a special ground potential lifting protection module; the protection module can effectively protect the power supply, prevent the ground potential from being raised to cause harm to the power supply, greatly improve the reliability, stability and service life of the power supply;
And (3) power protection: the input part is provided with undervoltage protection, thunder overvoltage protection and overcurrent protection, and the inverter part is provided with IGBT overcurrent protection, through protection, overheat protection and interlocking protection; the output part is provided with overvoltage protection, overcurrent protection and discharge current limiting protection, and has the functions of high-voltage output flashover, arc detection and protection.
In a further embodiment, aiming at a main heating device, an air duct is designed according to a space structure and the appearance of the device, so that reliable heat dissipation under full power output is ensured;
In a further embodiment, the voltage doubling circuit adopts a vacuum infusion process, and has high insulation strength, small volume and no risk of oil pollution.
In summary, the high-power direct-current high-voltage charger with the energy storage provided by the utility model separately charges the power supply when in idle state, and is disconnected from the power grid when in operation, and the stored energy in the power supply battery is used for providing electric energy for the charger to generate high-voltage direct current so as to charge the energy storage of the device. Therefore, the power supply requirements of a large number of charging machine group devices can be met, the power supply quality can be optimized through the power supply battery, the construction cost of a power grid is reduced, the internal anti-interference performance is enhanced, and the loss of the power grid and the internal devices is reduced. The trigger switch in the charging power supply is also improved, the trigger conduction is optimized and improved, and the condition that the charging of the equipment is not timely achieved due to the fact that the equipment is conducted by mistake is avoided.
The maintenance-free lithium iron titanate battery is used as the primary energy storage of the battery, so that the power supply requirement of a power grid can be greatly reduced, the cost investment is greatly reduced, and particularly, the later maintenance cost is reduced; the power supply is used as primary energy storage, so that the whole system has high autonomy, free energy sources, convenient transformation, flexible transportation and the like, and the power grid fixed power supply mode is difficult to achieve. The charging part of the utility model adopts a technical route of a high-frequency soft switch full-bridge inversion phase-shifting resonance voltage doubling circuit, has the characteristics of small volume, light weight, low noise and high reliability, and has the advantages of convenient control, high response speed, constant current charging, small volume, high efficiency, high power density, suitability for wide-range variable load and the like. The utility model adopts voltage doubling rectification to greatly simplify the design of the transformer, reduce the ripple wave of output current, disperse the heat consumption of inductance, and facilitate the realization of synchronous rectification; by adopting the optical path control switch technology, information between each power supply and the switch is transmitted in parallel, the speed is timely and accurate, the real-time monitoring of each power supply by an upper computer monitoring system can be realized, and the electrical isolation is realized.
The algorithms used in this embodiment are all of the prior art.
In the other technical features of the embodiment, those skilled in the art can flexibly select to meet different specific actual requirements according to actual conditions. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the utility model. In other instances, well-known compositions, structures, or components have not been described in detail so as not to obscure the utility model, and are within the scope of the utility model as defined by the appended claims.
In the description of the utility model, the terms "disposed," "mounted," "connected," and the like are intended to be broad in the sense that those skilled in the art will appreciate broadly unless otherwise specifically defined and limited. For example, the present utility model may be fixedly connected, movably connected, integrally connected, or partially connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements, etc., and it is understood by those skilled in the art that the specific meaning of the terms in the present utility model, i.e., the expression of the word language and the implementation of the actual technology may be flexibly corresponding, and the expression of the word language (including the drawing) in the specification of the present utility model does not constitute any single limiting interpretation of the claims.
Modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the utility model as defined by the appended claims. In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the utility model. In other instances, well-known techniques, such as specific construction details, operating conditions, and other technical conditions, have not been described in detail in order to avoid obscuring the present utility model.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present utility model and the core ideas thereof; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (6)
1. The utility model provides a from high voltage direct current machine that takes energy storehouse which characterized in that includes: the box body, a battery supply and an inversion boosting rectifying part are arranged in the box body, wherein,
The battery is used for storing electric energy and providing electric energy for the high-voltage direct-current charger;
the inversion boosting rectification part consists of two groups of inversion boosting rectification circuits and a control protection circuit which are symmetrically distributed;
The inversion boosting rectification circuit comprises:
the filter is used for reducing alternating current components in the pulsating direct current voltage and retaining the direct current components;
The phase-shifting full-bridge inverter comprises four power switching tubes and a freewheeling diode;
the high-frequency transformer is used for performing high-frequency DC/AC conversion, converting the low-voltage direct current into high-frequency low-voltage alternating current, boosting the high-frequency low-voltage alternating current through the high-frequency transformer, and rectifying the high-frequency low-voltage alternating current into high-voltage direct current through the high-frequency rectifying and filtering circuit;
the voltage doubling circuit is used for boosting the input voltage to reach a preset value;
The output end of the power supply is connected with the input end of the filter, and the filter, the phase-shifting full-bridge inverter, the high-frequency transformer and the voltage doubling circuit are sequentially connected; the voltage doubling circuit is connected with the output circuit and supplies power to the load;
and the phase-shifting full-bridge inverter and the voltage doubling circuit are respectively connected with the control protection circuit.
2. The self-contained battery-powered dc link charger of claim 1, wherein the battery supply is a lithium iron titanate battery.
3. The high-voltage direct-current charger with the energy store according to claim 1, wherein the power switch tube is an IGBT.
4. The self-contained battery-powered dc charging machine of claim 1, wherein said control and protection circuit comprises: the phase-shifting control circuit, the auxiliary power supply, the input/output protection circuit, the fault output and reset circuit are used for controlling the phase of the switching circuit of the phase-shifting full-bridge inverter.
5. The high-voltage direct-current charger with energy store according to claim 1, further comprising an optical fiber communication interface, wherein the control protection circuit is connected with the optical fiber communication interface, the optical fiber communication interface is connected with an optical path control switch through a communication optical fiber, and the optical path control switch is connected with an upper computer in a communication way.
6. The high-voltage direct-current charger with the energy warehouse of claim 1, wherein the side wall of the box body is provided with a heat dissipation air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322552641.5U CN221227202U (en) | 2023-09-20 | 2023-09-20 | High-voltage direct-current charger with energy warehouse |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322552641.5U CN221227202U (en) | 2023-09-20 | 2023-09-20 | High-voltage direct-current charger with energy warehouse |
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| CN221227202U true CN221227202U (en) | 2024-06-25 |
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| CN202322552641.5U Active CN221227202U (en) | 2023-09-20 | 2023-09-20 | High-voltage direct-current charger with energy warehouse |
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