CN109525125B - High-voltage storage battery charger power module and circuit - Google Patents
High-voltage storage battery charger power module and circuit Download PDFInfo
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- CN109525125B CN109525125B CN201811433525.9A CN201811433525A CN109525125B CN 109525125 B CN109525125 B CN 109525125B CN 201811433525 A CN201811433525 A CN 201811433525A CN 109525125 B CN109525125 B CN 109525125B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
Abstract
The invention relates to high-voltage battery charger power modules and circuits, wherein each high-voltage battery charger power module comprises a radiator assembly, a front panel assembly and a support column, the radiator assembly is connected with the front panel assembly through the support column, the radiator assembly comprises an Insulated Gate Bipolar Transistor (IGBT), an aluminum nitride ceramic substrate, a nested insulator and a radiator, the front panel assembly comprises a voltage-sharing capacitor and a low-inductance busbar, the voltage-sharing capacitor is connected with the IGBT through the low-inductance busbar, the nested insulator is embedded on the radiator and used for electric insulation of the IGBT, and the aluminum nitride ceramic substrate is arranged between the radiator embedded insulator and the IGBT and used for insulation and voltage resistance of the IGBT and the radiator.
Description
Technical Field
The invention belongs to the technical field of power structures, and particularly relates to power modules and circuits of a high-voltage storage battery charger.
Background
For the rail transit vehicles of the DC1500V power supply system, the input voltage of the storage battery charger is generally AC380V output by an auxiliary inverter, and then stable DC110V or DC24V power is output after rectification and DC/DC conversion.
The input voltage of a high-voltage battery charger can reach 2000V, and the system can adopt the following methods:
(1) a single module full bridge or half bridge topology is employed.
The 3300V grade IGBT needs to be selected for the power device of the single module topological structure, however, the high-voltage IGBT is large in switching loss, frequency is difficult to improve, system efficiency is low, and meanwhile cost can be greatly improved.
(2) And a multi-module series topology structure is adopted.
The multi-module topological structure can reduce the power of a single module, reduce the voltage stress of a power device, realize multi-module staggered control, reduce output ripples, and is an ideal topological structure.A plurality of modules are connected in series to reduce the input voltage of the single module, the power device can select the IGBT with 1700V or 1200V voltage class with lower switching loss, thus the switching frequency of the system can be improved, and the weight and the volume of the system can be reduced.
Disclosure of Invention
The invention provides high-voltage battery charger power modules and circuits on the basis of the defects, and the power modules can be applied to high-voltage battery chargers with multi-module series connection structure topologies, so that the technical problems that the Insulated Gate Bipolar Transistor (IGBT) improves the voltage resistance and meets the heat dissipation requirements are effectively solved.
In order to achieve the above object, the invention provides a high-voltage battery charger power module and a circuit thereof, circuits comprise an input voltage-equalizing circuit, a power conversion loop, an output rectification loop and an output filtering loop;
the input voltage-sharing circuit comprises a half-bridge voltage-sharing circuit consisting of a voltage-sharing resistor R1R2 and a voltage-sharing capacitor C1C 2, and input voltage sharing is achieved;
the power conversion loop comprises a DC/DC conversion circuit consisting of an insulated gate bipolar transistor IGBT1 IGBT2, a current transformer TA1 and a high-frequency transformer TR1, is connected with the input voltage-sharing circuit and is used for converting input high-voltage direct current into 110V square waves;
the output rectifying circuit comprises a rectifying diode VD1VD2 and an RC filter circuit thereof, is connected with the power conversion circuit, and rectifies 110V square waves output by the power conversion circuit into 110V direct current;
the output filter loop comprises a filter circuit consisting of an output inductor L2 and an output filter capacitor C5, and is connected with the output rectifying loop to realize output filtering and voltage stabilization.
high-voltage battery charger power module adopts the circuit, including radiator subassembly, front panel subassembly and support column, the radiator subassembly passes through the support column with front panel subassembly and is connected, the radiator subassembly includes insulating bipolar transistor IGBT1 IGBT2, front panel subassembly includes voltage-sharing capacitance C1C 2 and low-inductance busbar, voltage-sharing capacitance C1C 2 is arranged the connection through low-inductance busbar with IGBT1 IGBT 2.
Preferably, the heat sink assembly further comprises an aluminum nitride ceramic substrate, a nested insulator and a heat sink, the nested insulator being embedded on the heat sink for electrical insulation of the IGBT1 IGBT 2; the aluminum nitride ceramic substrate is arranged between the radiator embedded with the nested insulator and the IGBT1 IGBT2 and is used for the insulation and voltage resistance of the IGBT1 IGBT2 and the radiator.
Preferably, the voltage-sharing resistor R1R2, the current transformer TA1, the high-frequency transformer TR1, the rectifier diode VD1VD2, the output filter inductor L2 and the output filter capacitor C5 are arranged on the heat sink assembly according to the circuit characteristics, and the voltage-sharing resistor R1R2 is connected in parallel to the voltage-sharing capacitor C1C 2.
Preferably, the heat sink assembly further includes a resistor-capacitor plate formed by an RC filter circuit, and the resistor-capacitor plate is connected in parallel to the rectifier diode VD1VD2 for a buffer circuit during reverse recovery.
Preferably, the front panel assembly includes a front panel, a driving board, a voltage transformer, and an external connector, the driving board, the voltage transformer, and the external connector are mounted on the front panel, and the driving board is connected to the IGBT.
Preferably, the front panel assembly further includes a flexible copper bar and a through-wall conductive post, the output filter capacitor C5 is connected to the through-wall conductive post through the flexible copper bar, and the through-wall conductive post is used as a connection point for connecting the final output of the power module of the high-voltage battery charger and the output of other power modules in parallel.
Preferably, the front panel is provided with a maintenance panel, and the maintenance panel is used for maintaining an internal circuit of the power module of the high-voltage battery charger after being opened.
Preferably, step includes a bearing bolt assembly that fits into a groove in the side of the heat sink for removal and installation of the heat sink.
Preferably, the bearing bolt assembly comprises an inner hexagonal socket head bolt, a flat washer and a bearing, and the outer diameter of the inner hexagonal socket head bolt is in interference fit with the inner ring on the shaft side.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides power modules aiming at a high-voltage storage battery charger for rail transit, the power modules can be directly applied to the high-voltage storage battery charger with a multi-module series structure topology, and the technical problems that the IGBT of a power device needs to improve the insulation and voltage resistance and meet the heat dissipation requirement are effectively solved.
(1) The IGBT of the invention adopts the aluminum nitride ceramic chip to be isolated and arranged on the surface of the radiator, thereby not only meeting the requirement of good thermal conductivity of the IGBT, but also realizing the requirement of high insulation and voltage resistance of the IGBT base and the radiator, effectively solving the technical problems that the IGBT improves the insulation and voltage resistance and meets the radiating requirement, and needing no customization of the special high insulation and voltage resistance IGBT, and the method enables the high-voltage battery charger with multiple modules connected in series to realize the batch engineering application.
(2) The power module of the high-voltage storage battery charger is designed according to the platform, the structure is compact, the integration level is high, the layout is reasonable, each power module is completely , the serial connection use of multiple modules can be conveniently realized, the platform module design is realized, and the subsequent design and development investment is saved.
(3) All the connections of the main circuit are connected by adopting low-inductance busbars, copper bars and soft copper bars, and the electrical connection adopts wall-through conductive columns and external connectors, so that the structure is compact, concise and attractive; the front panel is provided with a maintenance panel and a bearing bolt assembly, so that the module is convenient to install and maintain.
Drawings
FIG. 1 is a circuit topology diagram of a power module of a high voltage battery charger of the present invention;
FIG. 2 is an overall view of a power module of the high-voltage battery charger of the present invention;
FIG. 3 is a block diagram of the heat sink assembly of the present invention;
FIG. 4 is an exploded view of the IGBT of the present invention mounted to a ceramic substrate;
FIG. 5 is a front panel assembly block diagram of the present invention;
FIG. 6 is a block diagram of the bearing bolt assembly of the present invention;
the device comprises a radiator component 1, a radiator 1-1, a current transformer 1-2, a voltage-sharing resistor 1-3, an IGBT1-4, an aluminum nitride ceramic substrate 1-5, a temperature switch 1-6, a rectifier diode 1-7, a resistance-capacitance plate 1-8, a handle 1-9, a bearing bolt component 1-10, an inner hexagonal cylinder head bolt 1-10-1, a flat washer 1-10-2, a bearing 1-10-3, an output filter inductor 1-11, an output filter capacitor 1-12, an absorption capacitor 1-13, a high-frequency transformer 1-14, a fixing bolt 1-15 and a nested insulator 1-16; the device comprises a front panel assembly 2, a front panel 2-1, a voltage-sharing capacitor 2-2, a low-inductance busbar 2-3, a driving board 2-4, a voltage transformer 2-5, a flexible copper bar 2-6, an external connector 2-7 and a wall-through conductive column 2-8; and a support column 3.
Detailed Description
The following description provides a detailed description of the invention with reference to the drawings.
The invention provides high-voltage battery charger power modules and circuits, which are used for a multi-module series topology high-voltage battery charger, wherein the multi-module topology structure can reduce the power of a single module, reduce the voltage stress of a power device, realize multi-module staggered control and reduce output ripples, and is an ideal topology structure.
Referring to fig. 1, fig. 1 is a circuit topology diagram of a high voltage battery charger power module, which may implement a multi-module series connection, fig. 1 includes a main circuit topology of two high voltage battery charger power modules, wherein the input terminals are connected in series and the output terminals are connected in parallel, wherein each power module is completely .
Taking the high-voltage storage battery power module 1 as an example, a circuit of a high-voltage storage battery charger power module adopts a half-bridge topology structure, and the input voltage of DC1500V is converted into the power voltage of DC110V with stable output through a half-bridge input voltage-equalizing circuit, a power conversion loop, an output rectification loop and an output filtering loop. The voltage-sharing circuit comprises a half-bridge voltage-sharing circuit consisting of a voltage-sharing resistor R1R2 and a voltage-sharing capacitor C1C 2, and input voltage sharing is achieved; the positive electrode of the DC1500V is connected with the positive electrode of a voltage transformer TV1 and R1, R2 is connected with the negative electrode end of the voltage transformer TV1, C1 is connected with R1 in parallel, and C2 is connected with R2 in parallel.
The power conversion loop comprises a DC/DC conversion circuit consisting of an insulated gate bipolar transistor IGBT1, an IGBT2, a current transformer TA1 and a high-frequency transformer TR1, and is connected with an input voltage-sharing circuit to convert the voltage-shared input high-voltage direct current into 110V square waves, wherein the drain electrode of the IGBT1 is connected with the anode of the C1, the source electrode of the IGBT passes through TA1 and is connected with the end on the secondary side of the TR1, the drain electrode of the IGBT2 is connected with the source electrode of the IGBT1, the source electrode of the IGBT2 is connected with the cathode of the C2, and the other end on the secondary side of.
The output rectifying circuit comprises rectifying diodes VD1, VD2 and an RC filter circuit thereof, is connected with the power conversion circuit, and rectifies the 110V square wave output by the power conversion circuit into 110V direct current; the secondary side of TR1 is respectively connected with the midpoint of VD1 and the midpoint of VD2, an RC filter circuit formed by connecting R5 and C7 in series is connected with VD1 in parallel, and an RC filter circuit formed by connecting R6 and C8 in series is connected with VD2 in parallel.
The output filter loop comprises a filter circuit consisting of an output inductor L2 and an output filter capacitor C5, is connected with the output rectifying loop, filters and stabilizes the 110V direct current output by the output rectifying loop, and outputs stable DC110V power supply voltage; wherein, L2 is connected with C5 in parallel, L2 is connected with R6 and the anode of C5, and the cathode of C5 is connected with the cathode of C8.
Fig. 1 shows a high voltage battery power module 1 in series with a high voltage battery power module 2, where the TV1 of the high voltage battery power module 1 is in series with the TV2 of the high voltage battery power module 2, and the negative electrode of the high voltage battery power module 2 is connected to the negative electrode of DC1500V, enabling series connection of the input terminals; the C5 of the high-voltage storage battery power module 1 is connected with the C6 of the high-voltage storage battery power module 2 in parallel, so that the output ends are connected in parallel. The topological structure of the main circuit of the power module of the high-voltage battery charger can be widened to a charger circuit formed by connecting a plurality of power modules in series.
According to the circuit structure of the high-voltage battery charger, the invention provides power modules of the high-voltage battery charger, referring to fig. 2, fig. 2 is an overall structure diagram of the power module of the high-voltage battery charger, the power module comprises a radiator assembly 1, a front panel assembly 2 and a support column 3, and the radiator assembly 1 is connected with the front panel assembly 2 through the support column 3.
Referring to fig. 3, fig. 3 is a block diagram of a heat sink assembly; the radiator component mainly comprises a radiator 1-1, a current transformer 1-2, a voltage-sharing resistor 1-3, an IGBT1-4, an aluminum nitride ceramic substrate 1-5, a temperature switch 1-6, a rectifier diode 1-7, a resistance-capacitance plate 1-8, a handle 1-9, a bearing bolt component 1-10, an output filter inductor 1-11, an output filter capacitor 1-12, an absorption capacitor 1-13 and a high-frequency transformer 1-14. All devices are reasonably arranged according to the characteristics of the main circuit, so that the utilization rate of the air is greatly improved, the heat dissipation of the radiator is uniform, and the overall heat dissipation effect of the radiator is improved.
Referring to fig. 6, in the embodiment, a bearing bolt assembly 1-11 is installed in a groove on the side surface of a heat sink 1-1 for dismounting and installing the heat sink 1-1, the bearing bolt assembly is composed of an inner hexagonal cylindrical head bolt 1-10-1, a flat washer 1-10-2 and a bearing 1-10-3, and the outer diameter of the inner hexagonal cylindrical head bolt 1-10-1 is in interference fit with an inner ring on the shaft side.
Referring to fig. 4, fig. 4 is an exploded view of the IGBT and ceramic substrate assembly; the radiator module further comprises fixing bolts 1-15, nesting insulators 1-16. Wherein, the left side IGBT installation diagram of the figure 4 is an exploded view, and the right side IGBT installation diagram is a normal installation diagram. The nested insulators 1-15 are embedded in the radiator 1-1, in the embodiment, the nested insulators 1-17 are composed of epoxy structural adhesive and stainless steel screw sleeves, wherein the epoxy structural adhesive plays an electric insulation role, and the IGBT1-4 is fixed on the stainless steel screw sleeves through the fixing bolts 1-15. The aluminum nitride ceramic substrate 1-5 is arranged on the radiator 1-1 embedded with the nested insulator 1-16, then the IGBT1-4 is fixed on the aluminum nitride ceramic substrate 1-5 through the fixing bolt 1-15, and finally the insulation of the IGBT1-4 and the radiating fin 1-5 is realized. The aluminum nitride ceramic substrate has the excellent characteristics of high temperature resistance, low thermal expansion coefficient, high thermal conductivity, electric insulativity and the like, and the design solves the problem of improving the insulation and voltage resistance of the IGBT and simultaneously meets the heat dissipation requirement of the IGBT.
Referring to fig. 5, fig. 5 is a view showing a structure of a front panel assembly; the front panel assembly mainly comprises a front panel 2-1, a voltage-sharing capacitor 2-2, a low-inductance busbar 2-3, a driving board 2-4, a voltage transformer 2-5, a flexible copper bar 2-6, an external connector 2-7 and a wall-through conductive column 2-8. The driving board 2-4, the voltage transformer 2-5 and the external connector 2-7 are mounted on the front panel 2-1, the voltage-sharing capacitor 2-2 is connected with the IGBT1-4 through the low-inductance busbar 2-3, and the wall-through conductive column 2-8 is used as a final output port of a high-voltage storage battery charger power module and a connection point connected with the outputs of other power modules in parallel.
Referring to fig. 2, in the present embodiment, the mounting holes of the power module are 4 holes on the substrate surface of the heat sink 1-1 and 2 holes on the left and right of the bottom of the front panel 2-1, the substrate hole of the heat sink 1-1 is fixed to the side wall of the device, and the bottom hole of the front panel 2-1 is fixed to the bottom surface of the device.
In the power module of the high-voltage storage battery charger in the embodiment, the input positive electrode of the DC1500V is firstly connected to the positive electrode end of a low-inductance busbar 2-3, the positive electrode of a voltage-sharing capacitor 2-2 is electrically connected with the C electrode of a 1-4IGBT1 through the low-inductance busbar 2-3, the negative electrode of the voltage-sharing capacitor 2-2 is connected with the E electrode of the 1-4IGBT2 through the low-inductance busbar 2-3, and the middle electrode of the voltage-sharing capacitor 2-2 is connected with the primary side connecting point 2 of a 1-15 high-frequency transformer TR1 through the low-inductance busbar 2-3 and a copper bar. The voltage-sharing resistor 1-3 is connected in parallel with the voltage-sharing capacitor 2-2. The intermediate point of the IGBT1 and the IGBT2 is connected with the primary side connecting point 1 of the 1-15 high-frequency transformer TR1 through a low-inductance bus bar 2-3 and a cable. The voltage-sharing capacitor 2-2 is fixed on the front panel assembly 1 through an insulating plate, the IGBT1 and the IGBT2 are directly installed on an aluminum nitride ceramic substrate 1-5, the aluminum nitride ceramic substrate 1-5 is installed on the radiator 1-1, and the driving plate 2-4 is installed on the front panel 2-1 at the upper ends of the IGBT1 and the IGBT2 and is electrically connected with the IGBT1 and the IGBT 2.
The high-frequency power module output parallel connection method comprises the steps that a 1-15 high-frequency transformer TR1 secondary side connecting point 1 and a connecting point 2 are connected to the middle point of a 1-10 rectifier diode VD1 and a VD2 through copper bars, a resistance-capacitance plate 1-8 formed by an RC filter circuit is connected to the rectifier diode VD1 and the VD2 in parallel to serve as a buffer circuit during reverse recovery of the rectifier diode VD1 and the VD2, the positive poles of the rectifier diodes VD1 and VD2 are connected with the connecting point 1 of an output filter inductor 1-12 through the copper bars, the connecting point 2 of the output filter inductor 1-12 is connected with the positive pole of the output filter capacitor 1-13 through the copper bars, the negative poles of the rectifier diodes VD1 and VD2 are connected with the negative poles of the output filter capacitor 1-13 through the copper bars, the positive poles and the negative poles of the output filter capacitor 1-13 are connected with a wall-penetrating conductive column 2-8 through a soft copper bar and a soft copper bar II, and the wall penetrating conductive column.
The power module of the high-voltage battery charger is not limited to DC1500V as input and DC110V as output, and the structure and the method can be correspondingly expanded to DC/DC conversion circuits with other voltages.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (8)
- The power module comprises a main circuit, wherein the main circuit adopts a multi-module series topology structure, the input ends of the modules are connected in series, the output ends of the modules are connected in parallel, each module comprises an input voltage-sharing circuit, a power conversion circuit, an output rectification circuit and an output filter circuit, the input voltage-sharing circuit comprises a half-bridge voltage-sharing circuit consisting of a voltage-sharing resistor R1R2 and a voltage-sharing capacitor C1C 2 to realize input voltage sharing, the power conversion circuit comprises an insulated gate bipolar transistor IGBT1 IGBT2, a DC/DC conversion circuit consisting of a current transformer TA1 and a high-frequency transformer TR1 and is connected with the input voltage-sharing circuit and used for converting input high-voltage direct current into 110V square waves, the output rectification circuit comprises a rectifier diode VD1VD2 and an RC filter circuit thereof and is connected with the power conversion circuit to rectify the 110V direct current output by the power conversion circuit into the 110V direct current, and the output filter circuit comprises an output inductor L2 and a filter circuit consisting of an output filter capacitor C5 and is connected with the output;the power module is characterized by comprising a radiator assembly, a front panel assembly and a support column, wherein the radiator assembly is connected with the front panel assembly through the support column, the radiator assembly comprises an insulated bipolar transistor IGBT1 IGBT2, the front panel assembly comprises a voltage-sharing capacitor C1C 2 and a low-inductance busbar, and the voltage-sharing capacitor C1C 2 is connected with an IGBT1 IGBT2 through the low-inductance busbar; the heat sink assembly further comprises an aluminum nitride ceramic substrate, a nested insulator and a heat sink, wherein the nested insulator is embedded on the heat sink and is used for electrically insulating the IGBT1 IGBT 2; the aluminum nitride ceramic substrate is arranged between the radiator embedded with the nested insulator and the IGBT1 IGBT2 and is used for the insulation and voltage resistance of the IGBT1 IGBT2 and the radiator.
- 2. The power module of the high-voltage battery charger according to claim 1, characterized in that the voltage-sharing resistor R1R2, the current transformer TA1, the high-frequency transformer TR1, the rectifier diode VD1VD2, the output filter inductor L2 and the output filter capacitor C5 are arranged on the radiator assembly according to the main circuit, and the voltage-sharing resistor R1R2 is connected in parallel with the voltage-sharing capacitor C1C 2.
- 3. The high-voltage battery charger power module as claimed in claim 2, wherein the heat sink assembly further comprises RC filter circuit composed of RC filter plates, and the RC filter plates are connected in parallel to the rectifier diode VD1VD2 for buffering circuit during reverse recovery.
- 4. The high voltage battery charger power module of claim 1, wherein the front panel assembly comprises a front panel, a driving board, a voltage transformer, and an external connector, the driving board, the voltage transformer, and the external connector are mounted on the front panel, and the driving board is connected with an IGBT1 2.
- 5. The high-voltage battery charger power module of claim 4, wherein the front panel assembly further comprises flexible copper bars and through-wall conductive posts, the output filter capacitor C5 is connected to the through-wall conductive posts through the flexible copper bars, and the through-wall conductive posts serve as connection points for the final output of the high-voltage battery charger power module and the connections in parallel with the outputs of the other power modules.
- 6. The power module of a high-voltage battery charger according to claim 4, characterized in that the front panel is provided with a maintenance panel for maintaining the internal circuit of the power module of the high-voltage battery charger after being opened.
- 7. The high voltage battery charger power module of claim 1, further comprising a bearing bolt assembly mounted in a groove in a side of the heat sink.
- 8. The power module of the high-voltage battery charger according to claim 7, wherein the bearing bolt assembly is composed of an inner hexagonal socket head bolt, a plain washer and a bearing, and the outer diameter of the inner hexagonal socket head bolt is in interference fit with the inner ring on the shaft side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811433525.9A CN109525125B (en) | 2018-11-28 | 2018-11-28 | High-voltage storage battery charger power module and circuit |
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| CN201811433525.9A CN109525125B (en) | 2018-11-28 | 2018-11-28 | High-voltage storage battery charger power module and circuit |
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| CN109525125B true CN109525125B (en) | 2020-01-31 |
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| CN110341519A (en) * | 2019-07-11 | 2019-10-18 | 珠海英搏尔电气股份有限公司 | A kind of charger and electric vehicle of laminated circuit board layout |
| CN112787485A (en) * | 2019-11-11 | 2021-05-11 | 中车株洲电力机车研究所有限公司 | High-frequency DC-DC converter module and auxiliary converter system |
| CN112002948A (en) * | 2020-07-16 | 2020-11-27 | 清远市巨劲科技有限公司 | Unmanned aerial vehicle new forms of energy battery management system |
| CN113659850B (en) * | 2021-08-18 | 2023-03-10 | 中车青岛四方车辆研究所有限公司 | Inversion module and high-frequency auxiliary converter equipment with same |
| CN114006532B (en) * | 2021-09-28 | 2023-09-19 | 株洲中车时代电气股份有限公司 | Current transformer |
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| JP5625774B2 (en) * | 2010-11-09 | 2014-11-19 | 富士電機株式会社 | Power converter and electric drive vehicle using the same |
| CN203387417U (en) * | 2013-08-23 | 2014-01-08 | 青岛四方车辆研究所有限公司 | Vehicle-mounted current transformer power module |
| CN204350555U (en) * | 2015-02-06 | 2015-05-20 | 湖南心澄电气设备有限公司 | A kind of radiator structure of normal charge machine |
| CN105939095A (en) * | 2016-06-27 | 2016-09-14 | 武汉中直电气股份有限公司 | Charging device power module |
| CN106887955A (en) * | 2017-04-17 | 2017-06-23 | 中车青岛四方车辆研究所有限公司 | High-power DC/DC modules |
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Effective date of registration: 20200716 Address after: 266031 Shandong province Qingdao City, Ruichang Road No. 231 Co-patentee after: CHONGQING CRRC SIFANG INSTITUTE INTELLIGENT EQUIPMENT TECHNOLOGY Co.,Ltd. Patentee after: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Address before: 266031 Shandong province Qingdao City, Ruichang Road No. 231 Patentee before: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. |