CN215528846U

CN215528846U - Flow guide filtering structure and electric automobile

Info

Publication number: CN215528846U
Application number: CN202121103334.3U
Authority: CN
Inventors: 冯颖盈; 姚顺; 罗耀文; 王虎
Original assignee: Shenzhen Vmax Power Co Ltd
Current assignee: Shenzhen Vmax Power Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-01-14
Anticipated expiration: 2031-05-21

Abstract

The utility model provides a flow guide filtering structure and an electric automobile, wherein the flow guide filtering structure comprises a shell and a connecting piece arranged on the shell, one end of the connecting piece is provided with a flow guide assembly extending out of the shell, and the other end of the connecting piece is provided with at least one bus bar extending into the shell; the shell is internally provided with a mainboard which is electrically connected with the busbar and is provided with at least one filter capacitor set. Install the connecting plate behind the casing, because the wiring double-screw bolt and the wiring nut of connecting plate one end have stretched out to the casing outside, the copper bar and the filter magnetic core of the other end have stretched into inside the casing, and first filter capacitor group and second filter capacitor group directly set up at the mainboard, only need weld the weld joint of mainboard and the welding port of the copper bar that corresponds extremely, can once realize simultaneously that the second grade EMC filtering that the filter capacitor group of water conservancy diversion subassembly and mainboard and the filter magnetic core of copper bar are constituteed is connected with the electricity of voltage converter and vehicle charger, the EMC filtering veneer has been saved, the screw assembly of copper bar, manufacturing cost is lower.

Description

Flow guide filtering structure and electric automobile

Technical Field

The utility model belongs to the technical field of charging and power transformation of new energy electric vehicles, and particularly relates to a flow guide filtering structure and an electric vehicle.

Background

With the increasing demand for energy conservation, emission reduction and air pollution control in social development, new energy automobiles are gradually commercialized in the market, wherein electric automobiles (including pure electric automobiles and hybrid electric automobiles) become new mastery in the new energy automobile industry and keep high-speed development. The electric vehicle is further divided into a pure electric vehicle and a hybrid electric vehicle, wherein the vehicle-mounted charger OBC and the voltage converter DCDC are important components of a vehicle-mounted power supply of the electric vehicle, and the flow guide structural member and the EMC filter structure are important components of the vehicle-mounted charger OBC and the voltage converter DCDC. And at present water conservancy diversion structure spare and EMC filtering structure on the market, as shown in FIG. 1, mainly adopt the structural layout of "connector + EMC filtering veneer + female arranging + mainboard" to realize water conservancy diversion and EMC filtering: firstly, a current connector 8 (for guiding a large current) is installed on a side plate 11 of a machine shell 1, then an EMC filtering single plate 9 with a filtering capacitor set (comprising a first filtering capacitor set 5 and a second filtering capacitor set 6 which are used as a first-level EMC filtering together) is connected with the current connector 8 through screws, then the EMC filtering single plate 9 is connected with a busbar 3 (usually adopting a copper bar) with a filtering magnetic core 31 (used as a second-level EMC filtering) through screws, and finally the busbar 3 is welded on a mainboard (namely a PCB mainboard) connected with a supporting column 13 of a bottom plate 12, so that the process is complex and the production cost is high.

Therefore, the technical problems to be solved in the field are that the assembly process is complex and the production cost is high due to the fact that the traditional flow guide structure and the traditional filter structure of the electric automobile are separately arranged.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flow guide filtering structure and an electric automobile, aiming at solving the technical problems of complex assembly process and high production cost caused by the separate arrangement of a flow guide structure and a filtering structure of the existing electric automobile.

In order to solve the problems, the utility model adopts the technical scheme that: the flow guide filtering structure comprises a machine shell and a connecting piece arranged on the machine shell, wherein a flow guide assembly extending out of the machine shell is arranged at one end of the connecting piece, and at least one busbar extending into the machine shell is arranged at the other end of the connecting piece; the shell is internally provided with a mainboard which is electrically connected with the busbar and is provided with at least one filter capacitor set.

Further, the bus bar sleeve is provided with a filtering magnetic core.

Furthermore, the mainboard is also electrically connected to the voltage converter and the vehicle-mounted charger, and the filter capacitor bank comprises a first filter capacitor bank and a second filter capacitor bank which are respectively and correspondingly electrically connected with the voltage converter and the vehicle-mounted charger.

Further, the guide assembly includes: the connector comprises a mounting plate connected to the connector, a wiring stud extending from the mounting plate, and a wiring nut mounted on the wiring stud.

Preferably, the busbar is a copper bar.

Preferably, the surface of the connecting member is provided with an insulating layer.

Preferably, the insulating layer is an encapsulating plastic.

Preferably, the busbar is welded to the main plate.

Further, the connecting piece penetrates through the side plate of the machine shell and is connected with the machine shell through a screw.

The utility model also provides an electric automobile which comprises a vehicle-mounted power supply device, wherein the vehicle-mounted power supply device comprises the diversion filtering structure.

Compared with the prior art, the flow guide filtering structure and the electric automobile provided by the utility model have the following beneficial effects:

compared with the traditional diversion structure member and EMC filtering structure which adopt a connector, an EMC filtering single plate, a copper bar and a mainboard, namely, the structural layout which can be completely assembled can be realized by multiple times of screw connection and one-time welding after the diversion structure member is installed on the shell, by using the diversion filtering structure and the electric automobile provided by the utility model, after the connecting plate is installed on the shell, because the diversion assembly with the wiring stud and the wiring nut arranged at one end of the connecting plate extends out of the shell, and the copper bar arranged at the other end of the connecting plate and the filtering magnetic core sleeved outside the copper bar extend into the shell, redundant screw installation procedures are not needed at the moment, and only one-time welding is needed, namely, each welding port of the mainboard is welded with a welding port at the tail end of the corresponding copper bar one by one, so that the diversion assembly and the EMC filtering can be synchronously realized at one time (including the steps of moving from the traditional EMC filtering single plate to the first filtering capacitor group and the second filtering capacitor group which are directly arranged on the mainboard The first filter capacitor bank and the second filter capacitor bank on the wave capacitor bank mainboard are used as primary EMC filter processing, and the filter magnetic core sleeved by the copper bar is used as secondary EMC filter processing) and are electrically connected with the voltage converter and the vehicle-mounted charger, so that screw assembly of an EMC filter single plate and the copper bar is omitted, the assembly process is simple, and the production cost is low.

Drawings

Fig. 1 is an assembly view of a conventional flow guide structure and a filter structure;

FIG. 2 is a schematic diagram of a partial assembly of a guided filtering architecture according to the present invention;

fig. 3 is a partially assembled schematic view of an unassembled motherboard of the guided filtering structure provided by the present invention;

fig. 4 is a first schematic diagram illustrating a complete assembly of a guided filtering structure according to the present invention;

fig. 5 is a schematic diagram of a complete assembly of the guide filter structure according to the present invention;

fig. 6 is a third schematic diagram of the complete assembly of the guide filter structure provided by the present invention.

Wherein, in the drawings, the reference numerals are mainly as follows:

1-a machine shell; 11-side plate; 12-a base plate; 13-a support column; 2-a connector; 21-a boss; 22-mounting holes; 23-a screw; 3-bus bar; 31-a filter core; 32-a welding port; 4, a main board; 5-a first filter capacitor bank; 6-a second filter capacitor bank; 7-mounting a plate; 71-a wiring stud; 72-a terminal nut; 8-a current connector; 9-EMC filtering veneer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to fig. 2 to 6 and the embodiments.

Referring to fig. 2-6, the flow guiding filter structure of the present invention includes a housing 1, where the housing 1 includes a bottom plate 12 and a side plate 11 disposed around the bottom plate 12. The portable terminal further comprises a connecting piece 2 mounted on the machine shell 1, and the connecting piece 2 is mounted on a mounting opening of a side plate 11 of the machine shell 1 as a preferred embodiment. The connecting piece 2 is preferably a rectangular substrate, and the connecting piece 2 is made of conductive metal materials such as copper, aluminum and alloy thereof; and the connecting member 2 penetrates the side plate 11 of the casing 1 (i.e. passes through the mounting opening entirely), and is connected with the casing 1 through the mounting hole 22 on the connecting member by the screw 23. In a preferred embodiment, the surface of the connecting element 2 is provided with an insulating layer, which is preferably an encapsulated plastic, and may also be an insulating plastic or an insulating rubber layer.

In this embodiment, the one end of connecting piece 2 is equipped with the water conservancy diversion subassembly that stretches out casing 1, and the water conservancy diversion subassembly includes: and a mounting plate 7 connected to the connector 2, wherein the mounting plate 7 is made of conductive metal material such as copper, aluminum or alloy thereof, preferably arranged perpendicular to the connector 2, and may be integrally formed with the connector 2 or welded to the connector 2. A wiring stud 71 protrudes from the top surface of the mounting plate 7, and the wiring is preferably arranged perpendicular to the mounting plate 7, and may be formed integrally with the mounting plate 7 or may be welded to the mounting plate 7. A terminal nut 72 is mounted on the terminal stud 71 through an internal thread and an external thread of the terminal stud 71, and is used for fixedly contacting an external lead (not shown) on the terminal stud 71 through the terminal nut 72, so as to output power input into the current guiding assembly to an input port of an external input device through the external lead.

Referring to fig. 2-5, in the present embodiment, at least one busbar 3 is disposed at the other end of the connecting element 2 and extends into the interior of the housing 1, and the busbar 3 is preferably a copper bar, an aluminum bar, or other conductive metal material, and is used to connect the main board with the connecting element and the conductive element, and guide the output power of the component connected to the main board to the conductive element. Can be integrally formed with the connecting piece 2 or can be welded with the connecting piece 2. As a preferred embodiment, the other end of the connecting piece 2 is provided with a boss 21, the surface of the boss 21 is provided with the above-mentioned insulating layer, and the boss 21 is used for being inserted into a step corresponding to the mounting opening of the side plate 11 of the casing 1, so as to better realize the fixation of the connecting piece 2 and the side plate 11 of the casing 1; a plurality of (preferably two) busbars 3 are disposed on the boss 21 and extend from the boss 21 into the interior of the cabinet 1.

Referring to fig. 4-5, in the present embodiment, a main board 4 electrically connected to the busbar 3 is disposed in the chassis 1, and the main board 4 is preferably disposed on a bottom plate 12 of the chassis 1 and fixedly connected to a bottom of the main board 4 by a plurality of supporting pillars 13 extending upward from the bottom plate 12, where the supporting pillars may be connected by welding, bonding, and the like, so as to mount and support the main board 4 in the chassis 1. In a preferred embodiment, the main board 4 is provided with a welding port for welding with a welding port at the end of the bus bar 3, and the welding port at the end of the bus bar 3 is inserted into the welding port of the main board 4 and then welded with the main board 4, so as to electrically connect the bus bar 3 and the main board 4. The main board 4 is provided with at least one filter capacitor bank. As a preferred embodiment, the main board 4 is electrically connected to a voltage converter (not shown in the figure) and an on-board charger (not shown in the figure), the voltage converter and the on-board charger are disposed in the housing 1, and the main board 4 is correspondingly provided with two filter capacitor sets, that is, the filter capacitor set includes a first filter capacitor set 5 and a second filter capacitor set 6 which are respectively and electrically connected to the voltage converter and the on-board charger, and the first filter capacitor set 5 and the second filter capacitor set 6 are respectively and electrically connected to a welding port at the end of one busbar 3; the first filter capacitor bank 5 and the second filter capacitor bank 6 are used for performing corresponding first-stage EMC filtering processing on the voltage converter and the vehicle-mounted charger respectively. The voltage converter is preferably a direct current converter (DC/DC), and the on-board charger is preferably an electric vehicle on-board charger (OBC).

Referring to fig. 2-5, as a preferred embodiment, the bus bar 3 is sleeved with a filter magnetic core 31, and the filter magnetic core 31 is sleeved on the bus bar 3 through connection manners such as dispensing, plastic interference fit, wrapping and the like, and is used for intensively providing a secondary EMC filtering process for the voltage converter and the vehicle-mounted charger connected through the main board 4, so as to further improve the EMC filtering capability for the voltage converter and the vehicle-mounted charger on the basis of the primary EMC filtering process provided by the first filter capacitor bank 5 and the second filter capacitor bank 6 of the main board 4.

The utility model also provides an electric automobile which comprises a vehicle-mounted power supply device, wherein the vehicle-mounted power supply device comprises the diversion filtering structure, and other components, wiring and circuit structures of the vehicle-mounted power supply device are also arranged in the shell 1.

The steps of the integral assembly of the guide filtering structure provided by the utility model are as follows:

firstly, the flow guide filtering structure passes through a mounting opening of a side plate 11 of the machine shell 1, so that a mounting plate 7 at one end of the connecting piece 2, a wiring stud 71 on the mounting plate 7 and a wiring nut 72 on the wiring stud 71 extend out of the machine shell 1 to the outside of the machine shell 1, and two busbars 3 (one of which is sleeved with a filtering magnetic core 31, or both of which are sleeved with the filtering magnetic core 31 and can be arranged according to actual requirements) at the other end of the connecting piece 2 extend into the machine shell 1.

Secondly, then, after each welding port of mainboard 4 and the terminal welding port one-to-one cooperation of two female 3 of arranging, pass through welding or bonding connection in the support column 13 on the bottom plate 12 of casing 1 with the bottom of mainboard 4, weld each welding port one-to-one with the welding port that corresponds again and die, make two female 3 of arranging respectively with the mainboard 4 on first filter capacitor group 5 and the electricity of second filter capacitor group 6 be connected to be connected with voltage converter and on-vehicle charger electricity through first filter capacitor group 5 and second filter capacitor group 6 respectively.

And finally, fixedly contacting an external lead on a wiring stud 71 through a wiring nut 72 to realize the current guiding path and secondary EMC filtering processing of the voltage converter and the vehicle-mounted charger, namely a main board 4 (a first filter capacitor set 5 and a second filter capacitor set 6), a busbar 3 (a filter magnetic core 31), a current guiding assembly, and an external line.

For example, as shown in fig. 1, the conventional flow guiding structure and EMC filtering structure adopt a connector, an EMC filtering board, a bus bar and a main board, that is, after the flow guiding structure is mounted on the housing, a structural layout that complete assembly can be realized only by multiple screw connections and one welding is required, after the connection board is mounted on the housing 1, because the flow guiding assembly with the wiring stud 71 and the wiring nut 72, which is arranged at one end of the connection board, extends out of the housing 1, and at the same time, the bus bar 3 and the filtering core 31, which is sleeved outside the bus bar 3, which are arranged at the other end of the connection board, extend into the housing 1, no additional screw 23 mounting process is required, and only one welding is required, that is, each welding port of the main board 4 and the welding port at the tail end of the corresponding bus bar 3 are welded one by one, so that the flow guiding assembly and EMC filtering can be synchronously realized at one time (including moving from the conventional filtering board to directly mounting the EMC filtering board The first filter capacitor group 5 and the second filter capacitor group 6 on the main board 4 are used for primary EMC filter processing, and the filter magnetic core 31 sleeved with the busbar 3 is used for secondary EMC filter processing) and are electrically connected with the voltage converter and the vehicle-mounted charger.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A flow guide filtering structure comprises a machine shell and is characterized by further comprising a connecting piece arranged on the machine shell, wherein a flow guide assembly extending out of the machine shell is arranged at one end of the connecting piece, and at least one bus bar extending into the machine shell is arranged at the other end of the connecting piece; the shell is internally provided with a mainboard electrically connected with the busbar, and the mainboard is provided with at least one filter capacitor set.

2. A flow-guiding filter structure as claimed in claim 1, wherein the bus bar sleeve is provided with a filter magnetic core.

3. The structure of claim 1, wherein the motherboard is further electrically connected to a voltage converter and a vehicle charger, and the filter capacitor bank comprises a first filter capacitor bank and a second filter capacitor bank respectively electrically connected to the voltage converter and the vehicle charger.

4. The flow directing filter structure of claim 1, wherein the flow directing assembly comprises: the connecting piece comprises a mounting plate connected to the connecting piece, a wiring stud extending from the mounting plate, and a wiring nut mounted on the wiring stud.

5. The flow-guiding filtering structure according to any one of claims 1 to 4, wherein the busbar is a copper bar.

6. Flow guiding filter structure according to any of claims 1-4, characterised in that the connector surface is provided with an insulating layer.

7. The flow directing filter structure of claim 6, wherein the insulating layer is an encapsulated plastic.

8. The flow-guiding filter structure according to any one of claims 1 to 4, wherein the busbar is welded to the main board.

9. Flow guiding and filtering structure according to any of claims 1-4, wherein said connection piece extends through a side plate of said housing and is connected to said housing by means of screws.

10. An electric vehicle comprising an onboard power supply apparatus, characterized in that the onboard power supply apparatus comprises a flow-guiding filter structure according to any one of claims 1 to 9.