CN109068525A - A kind of standard PC case structure of DC-DC power module - Google Patents

A kind of standard PC case structure of DC-DC power module Download PDF

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Publication number
CN109068525A
CN109068525A CN201810942550.3A CN201810942550A CN109068525A CN 109068525 A CN109068525 A CN 109068525A CN 201810942550 A CN201810942550 A CN 201810942550A CN 109068525 A CN109068525 A CN 109068525A
Authority
CN
China
Prior art keywords
port
power module
board
circuit board
cavity part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810942550.3A
Other languages
Chinese (zh)
Inventor
黄聪聪
郭鹏亮
汪超
刘小民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Clou Electronics Co Ltd
Original Assignee
Shenzhen Clou Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Clou Electronics Co Ltd filed Critical Shenzhen Clou Electronics Co Ltd
Priority to CN201810942550.3A priority Critical patent/CN109068525A/en
Publication of CN109068525A publication Critical patent/CN109068525A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/14Mounting supporting structure in casing or on frame or rack
    • H05K7/1422Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427Housings
    • H05K7/1432Housings specially adapted for power drive units or power converters
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20909Forced ventilation, e.g. on heat dissipaters coupled to components

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

The present invention relates to power module casing structure fields, refer in particular to a kind of standard PC case structure of DC-DC power module, it is characterised in that the cabinet includes left cap, right cap, main cartridge and cover board, and casing structure is compact, convenient disassembly;Wiring port can achieve touch-proof and fast insert-pull effect with lock in left cap;It is equipped with support frame in the main cartridge, PCB mounting plate is housed on support frame, insulating barrier is connected with PCB mounting plate is divided into cavity portion up and down, good heat dissipation effect for main cartridge;The circuit board is installed on the upper surface of PCB mounting plate, and PCB mounting plate is connected with circuit board with screw, and screw end is all installed in screw nut cap, and insulation effect is good;The power line of secondary line and Wiring port between the circuit board is attached in the upper cavity part of main cartridge, and is fixed with band, and anti-tampering effect is good.

Description

Standard case structure of DC-DC power module
Technical Field
The invention relates to the field of chassis structures of power modules, in particular to a standard chassis structure of a DC-DC power module.
Background
The DC-DC power module is a bidirectional inverter capable of converting direct current of a battery into direct current to feed energy to a power grid and charging the battery with the alternating current to store energy. When the electricity consumption of a user is in a peak-valley electricity consumption difference, capacity power distribution or demand power distribution mode, the system can save a large amount of electricity charges for the user. At present, however, for 60kw PCS (energy storage converter) DC-DC power modules existing in the market, there are many unreasonable places on the structural layout, poor heat dissipation, low space utilization, low waterproof level and high overall cost,
it is particularly proposed that 2017.09.05 is the date of the publication in the prior art, and the publication number is CN 206472039U utility model discloses an inverter power unit, which comprises a case, a PCB board is fixed on the case, a power integrated device and a capacitor unit are both welded on the PCB board, and the capacitor unit is connected in parallel between the DC + pole and the DC-pole of the power integrated device by the way of stacking bus-bars and routing, a radiator is fixed on the integrated device and is located in the radiating air duct of the case, and the power unit has a simple and compact structure. However, the power unit part structure is not made into a layered structure, so that the PCB inside is in direct contact with the heat dissipation air duct, the interference resistance is poor, meanwhile, various connecting wire harnesses on the PCB are easy to accumulate dust, and the service life of electrical components on the PCB can be shortened; in addition, the input/output terminals on the power integration module of the power unit have no touch-proof function.
Disclosure of Invention
The invention provides a standard case structure of a DC-DC power module, which is used for solving the problem of unreasonable layout of a power module case in the prior art.
In order to solve the above problems, the present invention provides the following technical solutions:
a standard chassis structure of DC-DC power module, the chassis includes the main box body, and sets up left side cap and right side cap at the main box body both ends, characterized by that,
the main box body is internally provided with a PCB mounting plate and an insulating partition plate which are used for mounting a circuit board, and the insulating partition plate is connected with the PCB mounting plate through screws to divide the inner space of the main box body into an upper cavity part and a lower cavity part; wherein,
the upper cavity part is provided with a circuit board;
the lower cavity part is internally provided with a relay, a fuse, a pre-charging resistor, a filter capacitor and a radiator which are electrically connected with the circuit board;
a fan is arranged on the right side cover and opposite to the lower cavity part;
and the left side cover is provided with an air hole at a position opposite to the lower cavity part.
Preferably, a support frame for fixing the PCB mounting plate is further arranged in the main box body;
the support frame includes a plurality of support bars that are used for supporting and fixing the PCB mounting panel and be used for with the spike of main box body inner wall connection.
Preferably, the support bars are arranged in parallel.
Preferably, the circuit board is connected with the PCB mounting plate through screws, and screw caps are arranged at the tail ends of the screws.
Preferably, a wiring port is arranged at a position of the left side cover opposite to the upper cavity part;
and the power line of the wiring port and the secondary line of the circuit board are both positioned in the upper cavity part.
Preferably, the wiring ports include a battery input positive port, a battery input negative port, a bus output positive port, a bus output negative port and a CAN communication port.
Preferably, the battery input positive electrode port, the battery input negative electrode port, the bus output positive electrode port and the bus output negative electrode port are provided with latches.
Preferably, the circuit board comprises a power board, a power auxiliary board, an input/output board, a control board, and a charging/discharging control board.
Preferably, the insulating spacer is L-shaped.
Preferably, the filter capacitor and the radiator are arranged at the lower part of the PCB mounting plate, and the filter capacitor and the radiator are arranged in the lower cavity part in sequence along the direction from the left side cover to the right side cover;
the relay, the fuse and the pre-charging resistor are arranged on the lower portion of the insulating partition plate and sequentially arranged from top to bottom.
Compared with the prior art, the invention has the following advantages:
1. compact structure, preceding, right side cap, main box body and apron all can be dismantled, can fix with the screw, and installation and maintenance are convenient, before the installation, during the electrical components and parts of right side cap and main box body, can part different places, many people simultaneous operation improve production efficiency.
2, the internal structure of the DC-DC power module is divided into two parts, the lower cavity part is mainly divided into a heat dissipation air duct, the upper cavity part is mainly a circuit board (a power board, a power supply auxiliary board, an input/output board, a control board and a charge/discharge control board), the middle part is separated by a PCB mounting board and an insulating partition board, the upper cavity part can be prevented from being subjected to dust accumulation, the IP protection grade is higher and can reach the IP5X grade; the power line between the secondary line and the wiring port between the circuit boards runs through the upper cavity part, so that the anti-interference performance is strong; the air is ensured to move away from the lower cavity part, no air leakage is caused, the heat dissipation effect is good, and the service life of electric components on the circuit board is prolonged.
3. The screw on circuit board and the PCB mounting panel is less than 4mm, but there is the restriction size machine case direction of height, and the partial circuit has the high-pressure part on the PCB, and insulating distance is not enough, and present screw block installs screw end whole in the screw block, can reach insulating purpose like this, and structural space utilization is high.
4. The battery input positive terminal port, battery input negative terminal port, the anodal port of bus output, bus output negative terminal port and CAN communication port on the left side lid all CAN realize quick plug, and wherein battery input positive terminal port, battery input negative terminal port, the anodal port of bus output, these four wiring ports of bus output negative terminal port that the left side was covered have the hasp, CAN reach and prevent touching and quick plug effect, provide the fail safe nature guarantee for production staff and operating personnel.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the reverse side of the left side cover of the present invention;
FIG. 3 is a schematic diagram of a patch port configuration of the present invention;
FIG. 4 is a schematic view of the structure of the lower chamber of the main case of the present invention;
FIG. 5 is a schematic view of the upper chamber part of the main case according to the present invention;
FIG. 6 is an internal layered structure of the present invention with major components removed;
FIG. 7 is a schematic view of the right side cover of the present invention;
the reference numerals are respectively:
the intelligent power supply comprises a case-1, a left side cover-2, a right side cover-3, a main box body-4, a cover plate-5, a relay-6, a fuse-7, a pre-charging resistor-8, a filter capacitor-9, a radiator-10, an insulating partition plate-11, a circuit board-12, a PCB mounting plate-13, a support frame-14, a battery input positive electrode port-15, a battery input negative electrode port-16, a bus output positive electrode port-17, a bus output negative electrode port-18, a CAN communication port-19, a lock catch-20, an interface board-21, an air hole-22, a fan-23, a wire protection sleeve-24 and a switch-25.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 6, the present invention provides a standard chassis structure of a DC-DC power module, which includes a chassis 1, the chassis includes a left side cover 2, a right side cover 3, a main box 4 and a cover plate 5, and the specific installation manner of the chassis 1 is as follows:
firstly, a relay 6, a fuse 7, a pre-charging resistor 8, a filter capacitor 9, a radiator 10 and the like are arranged at the bottom of a main box body 4; secondly, the wire sheath 24 and the circuit board 12 including a power board, a control board, a charge-discharge control board, a power supply auxiliary board and an input-output board are arranged on the PCB mounting board 13 and fixed on the support frame 14 together, the fan 23 is arranged on the right side cover 3, and the wiring ports including a battery input positive electrode port 15, a battery input negative electrode port 16, a bus output positive electrode port 17, a bus output negative electrode port 18, a CAN communication port 19 and the like are arranged on the left side cover 2; after the installation, the secondary connecting wires between the internal circuit boards are connected with the power wires of the wiring ports, the wires are fixed by a binding tape after the connection is finished, the insulating partition plate 11 is installed, and finally the cover plate 5 is installed.
The case adopts an open structure, has compact structure, can be fixed by screws because the left side cover 2, the right side cover 3, the main case body 4 and the cover plate 5 can be disassembled, is convenient to install and maintain, can be separated from different places when the electric components of the left side cover 2, the right side cover 3 and the main case body 4 are installed, can be operated by a plurality of people simultaneously, and improves the production efficiency.
As shown in fig. 1-3, the lower portion of the left side cover 2 is provided with an air hole, the connection port includes a battery input positive electrode port 15, a battery input negative electrode port 16, a bus output positive electrode port 17 and a bus output negative electrode port 18, which are installed on the upper end of the air hole 22, the connection port is divided into a connection port male connector and a connection port female connector, the connection port female connector is connected with the inside of the box body, the connection port male connector is connected with the outside through a connection wire, wherein a lock catch 20 is further installed on one side of each connection port to achieve the effects of touch prevention and quick insertion and extraction, and provide safety and reliability guarantee for production staff and operating staff, the CAN communication port 19 and the LED lamp are installed on the interface board 21, the interface board 21 is installed on the upper portion of the left side cover 2, and the switch is installed on the upper.
As shown in fig. 4-6, a support frame 14 is arranged in the main box body 4, the support frame 14 is arranged in the middle of the main box body 4, the support frame comprises 3 support bars for supporting and fixing the PCB mounting plate and two support feet for connecting with the inner wall of the main box body, and the 3 support bars are arranged in parallel. The support frame 14 is provided with a PCB mounting plate 13, the insulation partition plate 11 is connected with the PCB mounting plate 13 to divide the main box body 4 into an upper cavity part and a lower cavity part, the insulation partition plate is L-shaped and is used for completely dividing the upper cavity part and the lower cavity part of the main box body, wind is guaranteed to flow away from the lower cavity part, and the heat dissipation effect is good.
Chamber section on main case 4: the circuit board includes power board, control panel, charge-discharge control board, input/output board and power accessory plate, and wherein each board function is as follows:
the power board is responsible for power control and boosting;
the control panel is responsible for voltage and current sampling, PWM control and communication;
the charge and discharge control panel is responsible for communicating with the battery BMS;
the input and output board has the functions of total current sampling, pre-charging and input filtering;
the auxiliary power panel is responsible for the power supply of the whole system;
the power boards are 3 and are connected through copper bars and fixed on the upper part (part close to the right side cover) of the PCB mounting board, the charging and discharging control board and the input and output board are fixed in the middle of the PCB mounting board, the control board and the power supply auxiliary board are fixed on the lower part (part close to the left side cover) of the PCB mounting board, the battery input anode port 15 is connected with the input and output board through a relay, a fuse and a pre-charging resistor, the battery input cathode port 16 is connected with the input and output board, the bus output anode port 17 and the bus output cathode port 18 are respectively connected with the copper bars on the power board, the switch 25 and the fan 23 are respectively connected with the power supply auxiliary board, the relay 6 is also connected with the control board, and the; the PCB mounting plate 13 is connected with the circuit board 12 by screws, and the tail ends of the screws are all mounted in screw caps, so that the insulation purpose can be achieved, and the structural space utilization rate is high; besides, two wire protecting sleeves 24 are respectively arranged on the left side of the control panel and the right side of the auxiliary power panel, and the wire protecting sleeves 24 have the functions of preventing the wire harness from being scratched and reducing the air quantity of the lower cavity air duct.
In the lower chamber part of the main case 4: the radiator 10 is fixed at the lower part of the power board, and the filter capacitor 9 is arranged at the lower part of the charge-discharge control board and is connected with the charge-discharge control board through a wiring; relay, fuse, pre-charge resistance install in the lower part of insulating barrier, and from the top down is relay, fuse, pre-charge resistance in proper order, and relay 6 is fixed in 4 bottoms of main box body through the relay mounting, and fuse 7 is fixed in 4 bottoms of main box body through the insulated column, and pre-charge resistance 8 is fixed in 4 bottoms of main box body. The lower cavity part is used as a heat dissipation air duct, air leakage is avoided, the heat dissipation effect is good, the service life of electric devices on the circuit board 12 is prolonged, dust accumulation on the upper cavity part can be prevented, and the IP protection level is high.
The secondary wires between the circuit boards 12 and the power wires of the wiring ports are connected on the upper cavity of the main box body 4 through the wire protection sleeve 24 and are fixed by a binding belt, so that the anti-interference performance is strong.
As shown in FIG. 7, 3 fans 23 are arranged on the right side cover 3 opposite to the lower cavity part, and the air holes 22 are opposite to the fans 23, so that the heat dissipation effect is good.
The embodiments of the present invention have been described in detail, but the present invention is only exemplary and is not limited to the embodiments described above. It will be apparent to those skilled in the art that any equivalent modifications or substitutions can be made within the scope of the present invention, and thus, equivalent changes and modifications, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims (10)

1. A standard chassis structure of DC-DC power module, the chassis includes the main box body, and sets up left side cap and right side cap at the main box body both ends, characterized by that,
the main box body is internally provided with a PCB mounting plate and an insulating partition plate which are used for mounting a circuit board, and the insulating partition plate is connected with the PCB mounting plate through screws to divide the inner space of the main box body into an upper cavity part and a lower cavity part; wherein,
the upper cavity part is provided with a circuit board;
the lower cavity part is internally provided with a relay, a fuse, a pre-charging resistor, a filter capacitor and a radiator which are electrically connected with the circuit board;
a fan is arranged on the right side cover and opposite to the lower cavity part;
and the left side cover is provided with an air hole at a position opposite to the lower cavity part.
2. The standard chassis structure of a DC-DC power module of claim 1, wherein a support frame for fixing the PCB mounting plate is further provided in the main case;
the support frame includes a plurality of support bars that are used for supporting and fixing the PCB mounting panel and be used for with the spike of main box body inner wall connection.
3. The modular cabinet structure of claim 2, wherein the support bars are disposed parallel to each other.
4. The standard chassis structure of a DC-DC power module of claim 2, wherein the circuit board is connected to the PCB mounting board by screws, and the ends of the screws are provided with screw caps.
5. The modular cabinet structure of a DC-DC power module according to claim 1, wherein a wiring port is provided at a position of the left cover opposite to the upper cavity portion;
and the power line of the wiring port and the secondary line of the circuit board are both positioned in the upper cavity part.
6. The modular chassis structure of a DC-DC power module of claim 5, wherein the wiring ports include a battery input positive port, a battery input negative port, a bus output positive port, a bus output negative port, and a CAN communication port.
7. The modular chassis structure of a DC-DC power module of claim 6, wherein the positive battery input port, the negative battery input port, the positive bus output port and the negative bus output port are provided with latches.
8. The modular chassis structure of a DC-DC power module of claim 1, wherein the circuit board comprises a power board, a power auxiliary board, an input/output board, a control board, and a charging/discharging control board.
9. The modular cabinet structure for a DC-DC power module as claimed in claim 1, wherein the insulating partition is L-shaped.
10. The standard chassis structure of a DC-DC power module of claim 1, wherein the filter capacitor and the heat sink are mounted at the lower part of the PCB mounting board, and the filter capacitor and the heat sink are sequentially arranged in the lower cavity part along the direction from the left cover to the right cover;
the relay, the fuse and the pre-charging resistor are arranged on the lower portion of the insulating partition plate and sequentially arranged from top to bottom.
CN201810942550.3A 2018-08-17 2018-08-17 A kind of standard PC case structure of DC-DC power module Pending CN109068525A (en)

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Application Number Priority Date Filing Date Title
CN201810942550.3A CN109068525A (en) 2018-08-17 2018-08-17 A kind of standard PC case structure of DC-DC power module

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Application Number Priority Date Filing Date Title
CN201810942550.3A CN109068525A (en) 2018-08-17 2018-08-17 A kind of standard PC case structure of DC-DC power module

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CN109068525A true CN109068525A (en) 2018-12-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109980902A (en) * 2019-04-29 2019-07-05 中山大洋电机股份有限公司 A kind of fuel cell system dcdc converter
EP4075932A4 (en) * 2019-12-13 2024-01-03 Hitachi Industrial Equipment Systems Co., Ltd. Power conversion device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109980902A (en) * 2019-04-29 2019-07-05 中山大洋电机股份有限公司 A kind of fuel cell system dcdc converter
EP4075932A4 (en) * 2019-12-13 2024-01-03 Hitachi Industrial Equipment Systems Co., Ltd. Power conversion device

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Application publication date: 20181221

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