CN210640806U - Power converter with sealing device - Google Patents
Power converter with sealing device Download PDFInfo
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- CN210640806U CN210640806U CN201921712802.XU CN201921712802U CN210640806U CN 210640806 U CN210640806 U CN 210640806U CN 201921712802 U CN201921712802 U CN 201921712802U CN 210640806 U CN210640806 U CN 210640806U
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- power supply
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- conversion circuit
- voltage conversion
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Abstract
A power converter with a sealing device, comprising a housing and a connector; a voltage conversion circuit for converting power supply voltage is arranged in the shell, the shell is provided with a through hole, the connector is fixedly sealed on the through hole, a sealing colloid is arranged between the bottom surface of the connector and the outer edge of the through hole, and the connector is provided with a conducting strip and a power supply connecting column; the conducting strip is connected with the voltage conversion circuit, one end of the power connecting column is connected with the conducting strip, and the other end of the power connecting column is connected with an external power supply. The utility model discloses a sealed colloid direct solidification in on the holding tank of through-hole outer fringe, avoided the rubber ring to warp and the problem that the installation is not in place to produce the gap to guaranteed that power converter satisfies and prevented that the dust from getting into and prevent the sealed requirement that soaks for a short time.
Description
Technical Field
The utility model relates to a power conversion field, concretely relates to power converter with sealing device.
Background
The 48V-12V DC-DC power converter is used in a 48V system of a light mixed fuel vehicle, and has the function of converting a 48V DC power supply into a 12V DC power supply to supply electricity for the vehicle. The power converter is assembled in an engine compartment and has a harsh environment, such as high temperature, high humidity, high dust, etc., so that in order to protect the voltage conversion circuit inside the power converter, it is necessary to ensure that the power converter meets the sealing specification of IP 67: preventing dust from entering and preventing short-time soaking.
Because the connector and the shell of the power converter are two independent parts, the connector is arranged on the through hole of the shell, the bottom surface of the connector and the outer edge of the through hole need to be sealed, and the power converter can meet the requirements of preventing dust from entering and preventing short-time soaking.
In the prior art, as shown in fig. 1, a rubber ring 4 is disposed at the outer edge of a through hole 4, a connector 2 is disposed on the through hole 4, and the connector 2 is fixed to a housing 1 by bolts, so that the bottom surface of the connector and the outer edge of the through hole are sealed by the rubber ring.
The inventor thinks that the connector is embedded with a plurality of metal components, so that the rubber ring is easy to press and deform, the rubber ring needs to be manually installed, and the rubber ring is not installed in place, so that a storage gap between the bottom surface of the connector and the outer edge of the through hole is inevitable, and therefore, the defect of the prior art is that the power converter cannot be ensured to meet the sealing requirements of preventing dust from entering and short-time soaking.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a power converter with a sealing device, which solves the problem that the power converter can not meet the requirements of preventing dust from entering and short-time soaking.
In order to achieve the above purpose, the utility model adopts the technical scheme that: providing a power converter with a sealing device, comprising a housing and a connector; a voltage conversion circuit for converting power supply voltage is arranged in the shell, the shell is provided with a through hole, the connector is fixedly sealed on the through hole, a sealing colloid is arranged between the bottom surface of the connector and the outer edge of the through hole, and the connector is provided with a conducting strip and a power supply connecting column; the conducting strip is connected with the voltage conversion circuit, one end of the power connecting column is connected with the conducting strip, and the other end of the power connecting column is connected with an external power supply.
Further, the outer fringe of through-hole is provided with the holding tank, the holding tank is used for holding and placing sealed colloid.
Further, the external power supply includes an input power supply and an output power supply, an output voltage of the input power supply is an input voltage of the voltage conversion circuit, and an input voltage of the output power supply is an output voltage of the voltage conversion circuit.
Specifically, the output voltage of the input power supply is 48V, that is, the input voltage of the voltage conversion circuit is 48V; the input voltage of the output power supply is 12V, namely the output voltage of the voltage conversion circuit is 12V.
Further, the power connection post includes input, earthing terminal and output, the input with input power connects, the output with output power connects, input power's output voltage through with the conducting strip that the input is connected is inputed to voltage conversion circuit, voltage conversion circuit's output voltage through with the conducting strip that the output is connected exports to output power, the earthing terminal with the conducting strip that the earthing terminal is connected is used for the ground connection of converter.
Specifically, one end of the input end is connected with the 48V voltage of the input power supply, the other end of the input end is connected with the conducting strip, and the 48V voltage is input to the voltage conversion circuit through the conducting strip connected with the input end; one end of the output end is connected with the output power supply, the other end of the output end is connected with the conducting strip, 12V voltage output by the voltage conversion circuit is output to the output power supply through the conducting strip connected with the output end, and the output power supply provides 12V power supply voltage for connected equipment.
Furthermore, the connector is also provided with a signal end for connecting the voltage conversion circuit with a peripheral controller; the signal end comprises a plurality of signal connecting wires for connecting the voltage conversion circuit and the controller: on the one hand, the control signal of the peripheral controller is transmitted to the voltage conversion circuit, and on the other hand, the output signal of the voltage conversion circuit is transmitted to the peripheral controller. Specifically, when voltage conversion is required, the signal terminal transmits a start instruction sent by the peripheral controller to the voltage conversion circuit through the signal line, and the voltage conversion circuit starts voltage conversion and transmits a conversion signal to the peripheral controller through the signal line; when the voltage conversion needs to be stopped, the signal end transmits a stopping instruction sent by the peripheral controller to the voltage conversion circuit through the signal wire, and the voltage conversion circuit stops the voltage conversion and transmits an output signal to the peripheral controller through the signal wire.
Further, the connector fixes the through hole by a bolt.
Further, the sealing colloid is silica gel. The silica gel is the existing glue of production line, the glue is solidified through heating humidification, and the tough and elastic sealing body with the bonding performance is formed at the outer edge of the through hole.
Furthermore, the shell is also provided with an explosion-proof valve for protecting a voltage conversion circuit inside the shell; the periphery of the explosion-proof valve is provided with a protection sheet for preventing the explosion-proof valve from being extruded. The explosion-proof valve selects an expanded polytetrafluoroethylene (E-PTFE) microporous membrane as a main waterproof breathable material, the aperture of the E-PTFE membrane is more than 1000 times larger than the diameter of gas and is one thousands of water drops, and in addition, because the surface energy of the E-PTFE membrane is very low, small water drops can quickly form larger water drops on the surface of the E-PTFE membrane under the action of surface tension (water molecules are pulled mutually). Therefore, the gas can smoothly pass through the waterproof and breathable fabric, and liquid water cannot pass through the waterproof and breathable fabric, so that the waterproof and breathable fabric has good waterproof and breathable performance. When the pressure inside the shell is smaller than the set explosion value of the explosion-proof valve, the explosion-proof valve has the same working principle as the traditional waterproof ventilation valve, and the explosion-proof valve plays a role in dust prevention, water prevention and ventilation in the state; when the pressure intensity in the shell is larger than or equal to the set explosion value of the explosion-proof valve, the pressure in the shell jacks a piston body arranged in the explosion-proof valve, gas is directly communicated with the outside through an unobstructed channel, and rapid gas discharge is realized, so that the pressure in the shell is rapidly reduced, the shell is prevented from being exploded, and the explosion-proof valve plays an explosion-proof role in this state.
The beneficial effects of the utility model reside in that, the utility model provides a power converter with sealing device adopts sealed colloid direct solidification in the bottom surface of connector with between the outer fringe of through-hole, avoided the rubber ring to warp and the not in place problem of installation to guaranteed that power converter satisfies and prevents that the dust from getting into and prevent the sealed requirement of soaking for a short time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded schematic view of a prior art sealing technical solution of the present invention.
Fig. 2 is an external schematic view of a power converter with a sealing device according to an embodiment of the present invention.
Fig. 3 is an exploded schematic view of a power converter with a sealing device according to an embodiment of the present invention.
The housing, labeled 1 in the above figures; 2. a connector; 3. a through hole; 4. a rubber ring; 5. sealing the colloid; 201. an input end; 202. a ground terminal; 203. an output end; 204. an input terminal conducting strip; 205. a ground terminal conducting strip; 206. an output end conducting strip; 207. a signal terminal; 208. a connector housing; 101. a heat sink; 102. an upper cover; 103. an explosion-proof valve; 104. a bolt; 105. a connecting seat; 106. and (4) protecting the sheet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in 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.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2 and 3, the power converter with a sealing device provided in the present embodiment includes a housing 1, a connector 2, and a voltage converting circuit disposed inside the housing 1 for converting a power supply voltage; the shell 1 comprises an upper cover 102, a heat radiating fin 101 and a connecting seat 105, wherein the heat radiating fin 101 and the connecting seat 105 are the same shell, the upper cover 102 is fixedly connected with the shell through bolts, a through hole 3 is formed in the connecting seat 105, the connector 2 is fixedly installed on the through hole 3 through a bolt 104, a sealing colloid 5 is arranged between the bottom surface of the connector 2 and the outer edge of the through hole 3, and the sealing colloid 5 plays a role in preventing dust from entering and short-time soaking.
The connector 2 is provided with a conducting strip and a power connection column, wherein the conducting strip comprises an input end conducting strip 204, a grounding end conducting strip 205 and an output end conducting strip 206, the power connection column comprises an input end 201, a grounding end 202 and an output end 203, one end of the input end conducting strip 204 is connected with the input end 201, the other end of the input end conducting strip 204 is connected with the input voltage of the voltage conversion circuit, one end of the grounding end conducting strip 205 is connected with the grounding end 202, the other end of the grounding end conducting strip 205 is connected with the grounding end of the voltage conversion circuit, one end of the output end conducting strip 205 is connected with the output voltage of the voltage conversion circuit, the other end of the output end conducting strip is connected with the output end 203, one end of the input;
the output voltage of the external input power supply is the input voltage of the voltage conversion circuit, and the input voltage of the output power supply is the output voltage of the voltage conversion circuit;
specifically, the output voltage of the input power supply is 48V, that is, the input voltage of the voltage conversion circuit is 48V; the input voltage of the output power supply is 12V, namely the output voltage of the voltage conversion circuit is 12V; one end of the input end 201 is connected with the input power supply 48V voltage, the other end of the input end 201 is connected with the input end conducting strip 204, and the 48V voltage is input into the voltage conversion circuit through the input end conducting strip 204 connected with the input end 201; output 203 one end with output power connects, and the other end of output 203 links to each other with output conducting strip 205, the 12V voltage of voltage conversion circuit output through the output conducting strip 205 of being connected with output 203 export to output power, output power provides 12V supply voltage to the equipment of connecting.
The connector 2 is also provided with a signal end 207 for connecting the voltage conversion circuit with a peripheral controller; the signal terminal 207 includes a plurality of signal connection lines for connection between the voltage conversion circuit and the controller: on the one hand, the control signal of the peripheral controller is transmitted to the voltage conversion circuit, and on the other hand, the output signal of the voltage conversion circuit is transmitted to the peripheral controller. Specifically, when voltage conversion is required, the signal terminal 207 transmits a start instruction sent by the peripheral controller to the voltage conversion circuit through the signal line, and the voltage conversion circuit starts voltage conversion and transmits a conversion signal to the peripheral controller through the signal line; when the voltage conversion needs to be stopped, the signal end transmits a stopping instruction sent by the peripheral controller to the voltage conversion circuit through the signal wire, and the voltage conversion circuit stops the voltage conversion and transmits an output signal to the peripheral controller through the signal wire.
Preferably, the connection seat 105 is further provided with an explosion-proof valve 103 for a voltage conversion circuit inside the housing 1; the explosion-proof valve 103 is provided at the outer circumference thereof with a protection sheet 106 for preventing the explosion-proof valve 103 from being pressed. The explosion-proof valve 103 adopts an expanded polytetrafluoroethylene (E-PTFE) microporous membrane as a main waterproof and breathable material, the aperture of the E-PTFE membrane is more than 1000 times larger than the diameter of gas and is one thousands of water drops, and in addition, because the surface energy of the E-PTFE membrane is very low, small water drops can quickly form larger water drops on the surface of the E-PTFE membrane under the action of surface tension (water molecules are pulled mutually), so that gas can smoothly pass through, and liquid water cannot pass through, so that the explosion-proof valve has good waterproof and breathable performance. When the internal pressure of the shell 1 is smaller than the set explosion value of the explosion-proof valve 103, the explosion-proof valve 103 has the same working principle as the traditional waterproof ventilation valve, and in this state, the explosion-proof valve 103 plays a role in dust prevention, water prevention and ventilation; when the internal pressure of the shell 1 is greater than or equal to the set explosion value of the explosion-proof valve 103, the internal pressure of the shell 1 jacks up a piston body arranged in the explosion-proof valve 103, gas is directly communicated with the outside through an unobstructed channel, and rapid gas discharge is realized, so that the internal pressure of the shell 1 is rapidly reduced, the explosion of the shell 1 is prevented, and the explosion-proof valve 103 plays an explosion-proof role in this state.
Preferably, the outer edge of the through hole 3 is provided with an accommodating groove for accommodating and placing the sealing colloid 5, and the sealing colloid 5 is coated on the accommodating groove by adopting dispensing equipment, so that manual operation is avoided, and the production efficiency is improved;
preferably, the sealing colloid 5 is silica gel, which is an existing glue in a production line. Firstly, coating the sealing colloid 5 on the accommodating groove by adopting dispensing equipment, then installing the connector 2 on the through hole 3 and fixing the connector with the bolt 104, and then heating, humidifying and curing the colloid 5 to form a tough and elastic sealing body with bonding property between the bottom surface of the connector 2 of the colloid 5 and the outer edge of the through hole 3, thereby meeting the sealing requirement of preventing dust from entering and preventing short-time soaking of the power converter.
The embodiment of the utility model provides a power converter with sealing device's characteristics as follows: (1) the sealing colloid is directly solidified between the bottom surface of the connector and the outer edge of the through hole, so that the power converter is ensured to meet the sealing requirements of preventing dust from entering and short-time soaking, and the problems of deformation and gap generation caused by improper installation of the rubber ring are avoided; (2) from the product structure, the sealing colloid is directly solidified between the bottom surface of the connector and the outer edge of the through hole, so that the additional use of a rubber ring is reduced, and the production cost is reduced; (3) the glue dispensing equipment is adopted to coat the sealing glue on the accommodating groove at the outer edge of the through hole, so that manual operation is avoided, and automatic production of an assembly line is facilitated, so that labor cost is saved and production efficiency is improved; (4) the material of the sealing colloid is silica gel, which belongs to the existing material of the production line, and no additional cost is added.
The embodiments of the present invention have been described in detail, but the invention is not limited to the embodiments, and those skilled in the art can make many equivalent modifications or substitutions without departing from the spirit of the present invention, and the equivalent modifications or substitutions are included in the scope of protection defined by the claims of the present application.
Claims (9)
1. The power converter with the sealing device is characterized by comprising a shell and a connector; a voltage conversion circuit for converting power supply voltage is arranged in the shell, the shell is provided with a through hole, the connector is fixedly sealed on the through hole, a sealing colloid is arranged between the bottom surface of the connector and the outer edge of the through hole, and the connector is provided with a conducting strip and a power supply connecting column; the conducting strip is connected with the voltage conversion circuit, one end of the power connecting column is connected with the conducting strip, and the other end of the power connecting column is connected with an external power supply.
2. The power converter according to claim 1, wherein a receiving groove is disposed at an outer edge of the through hole, and the receiving groove is used for receiving and placing the sealant.
3. The power converter according to claim 1, wherein the external power supply comprises an input power supply and an output power supply, an output voltage of the input power supply is an input voltage of the voltage conversion circuit, and an input voltage of the output power supply is an output voltage of the voltage conversion circuit.
4. The power converter according to claim 3, wherein the power connection column comprises an input terminal, a ground terminal and an output terminal, the input terminal is connected to the input power supply, the output terminal is connected to the output power supply, the output voltage of the input power supply is input to the voltage conversion circuit through a conductive sheet connected to the input terminal, the output voltage of the voltage conversion circuit is output to the output power supply through a conductive sheet connected to the output terminal, and the conductive sheet connected to the ground terminal is used for grounding the converter.
5. The power converter of claim 1, wherein the connector further comprises a signal terminal for connecting the voltage conversion circuit to a peripheral controller.
6. The power converter according to claim 1 or 5, wherein the connector fixes the through hole by a bolt.
7. The power converter according to claim 1 or 2, wherein the sealant is a silicon gel.
8. The power converter of claim 1, wherein said housing is further provided with an explosion-proof valve for protecting said voltage conversion circuit.
9. A power converter according to claim 8, wherein the explosion-proof valve is provided with a protective sheet around its periphery for preventing the explosion-proof valve from being pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921712802.XU CN210640806U (en) | 2019-10-14 | 2019-10-14 | Power converter with sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921712802.XU CN210640806U (en) | 2019-10-14 | 2019-10-14 | Power converter with sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210640806U true CN210640806U (en) | 2020-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921712802.XU Active CN210640806U (en) | 2019-10-14 | 2019-10-14 | Power converter with sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210640806U (en) |
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2019
- 2019-10-14 CN CN201921712802.XU patent/CN210640806U/en active Active
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