CN221103791U - Arrangement structure of motor controller of electric automobile - Google Patents
Arrangement structure of motor controller of electric automobile Download PDFInfo
- Publication number
- CN221103791U CN221103791U CN202322794594.5U CN202322794594U CN221103791U CN 221103791 U CN221103791 U CN 221103791U CN 202322794594 U CN202322794594 U CN 202322794594U CN 221103791 U CN221103791 U CN 221103791U
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- film capacitor
- thin film
- pcba
- circuit board
- box body
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- 239000003990 capacitor Substances 0.000 claims abstract description 66
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000010409 thin film Substances 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 229920006335 epoxy glue Polymers 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 7
- 230000010354 integration Effects 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The DC bus connector and the pressure connector are arranged on two sides of the box body, and the DC cover plate is arranged on the bottom surface of the box body; the thin film capacitor assembly and the PCBA integrated circuit module are stacked in the box body, the power module and the filter capacitor of the PCBA integrated circuit module are respectively arranged on the PCBA circuit board at intervals, the current sensor is arranged on the PCBA circuit board and is positioned on one side of the power module, and the three-phase busbar of the power module passes through the current sensor and is arranged side by side; the conductive column of the film capacitor assembly and the shell of the film capacitor are integrally injection molded, the filtering magnetic ring is encapsulated in the groove of the shell of the film capacitor, the conductive column is positioned in the filtering magnetic ring, the PCBA circuit board is fixed to the top end of the conductive column through bolts, and the direct-current bus connector terminal is fixed to the bottom end of the conductive column through bolts. The structure realizes high integration through the modularization, the inside is connected without the switching wire harness and the copper bar, the cost is lower, the integration level is high, and the assembly efficiency is high.
Description
Technical Field
The utility model relates to the technical field of motor control, in particular to an arrangement structure of an electric automobile motor controller.
Background
The motor controller structure for the traditional electric automobile is generally provided with a closed box body, wherein a plurality of parts such as a direct current wiring seat assembly, a direct current busbar, a three-phase busbar, a grounding busbar, a thin film capacitor, a driving module, a current sensor, an auxiliary power circuit board, a driving circuit board, a control circuit board, a filter circuit board, a low-voltage switching circuit board and the like are distributed in the box body and are fixed in the box body one by one through bolts; the direct current connectors, the pressure connection connectors, the water inlet and outlet pipes, the direct current cover plate, the three-phase cover plate and other parts are mostly fixed outside the box body through bolts. The components are fixed on the box body through bolts to form an assembly structure for controlling the motor, and the structure has high installation cost, low efficiency and large occupied space due to the fact that the components are multiple in types, scattered and independently installed, so that the whole space size of the motor controller is large, and the whole layout scheme of the electric automobile is limited. Meanwhile, the wiring harness plug-in components are adopted to connect signal transmission among all circuit boards in the existing motor controller, so that the difficulty in mounting the motor controller is increased, the defective rate of the wiring harness plug-in components in opposite insertion is increased, and the safe and reliable operation of the motor controller is affected.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an arrangement structure of an electric vehicle motor controller, which overcomes the defects of the layout of parts of the traditional motor controller, realizes high integration, high-efficiency assembly, small volume and low cost through modularization, reduces the overall cost of the motor controller, reduces the reject ratio caused by plugging of a wire harness plug-in unit and ensures the safe and reliable operation of the motor controller.
In order to solve the technical problems, the arrangement structure of the electric vehicle motor controller comprises a box body, a direct current cover plate, a direct current bus connector and a low-voltage connector, wherein the direct current bus connector and the low-voltage connector are respectively arranged on two sides of the box body;
The PCBA integrated circuit module comprises a PCBA circuit board, a current sensor, a power module and a filter capacitor, wherein the power module and the filter capacitor are respectively arranged on the PCBA circuit board at intervals, the current sensor is arranged on the PCBA circuit board and is positioned on one side of the power module, and three-phase busbar of the power module passes through the current sensor and is arranged side by side;
The thin film capacitor assembly comprises a filtering magnetic ring, a conductive column and a thin film capacitor, wherein the conductive column and a shell of the thin film capacitor are integrally injection molded, the filtering magnetic ring is encapsulated in a groove of the shell of the thin film capacitor through epoxy glue, the conductive column is located in the filtering magnetic ring, the PCBA circuit board is fixed to the top end of the conductive column through bolts, and the direct current bus connector terminal is fixed to the bottom end of the conductive column through bolts.
Further, the PCBA circuit board is sequentially provided with a driving function circuit area, an auxiliary power supply function circuit area, a control function circuit area and an EMC filtering function circuit area along the length direction, wherein the auxiliary power supply function circuit area and the control function circuit area are arranged in parallel; the current sensor and the power module are located on the back of the driving function circuit area of the PCBA circuit board, the filter capacitor is located on the back of the EMC filter function circuit area of the PCBA circuit board, and the auxiliary power supply function circuit area and the EMC filter function circuit area are connected with the conductive column of the thin film capacitor assembly through bolts and acquire high-voltage current.
Further, the conductive column of the thin film capacitor assembly is connected with the busbar of the thin film capacitor, and the output busbar of the thin film capacitor assembly is connected with the busbar of the corresponding polarity of the power module.
Further, the box is equipped with cooling water course, inlet tube and outlet pipe communicate respectively the cooling water course both ends, power module is equipped with the heat dissipation post and imbeds to the cooling water course.
Further, the water inlet pipe and the water outlet pipe are respectively arranged on the front surface and the back surface of the box body and are respectively connected with the whole car cooling circulation system.
Further, the bottom surface of the thin film capacitor shell of the thin film capacitor assembly is coated with heat conducting glue, and heat generated in the thin film capacitor assembly is conducted to the box body through the heat conducting glue to dissipate heat.
Further, when the PCBA integrated circuit module is installed in the box body, the filter capacitor is embedded into the groove in the box body, and the filter capacitor is fixed by filling the fixing glue in the groove.
Further, the periphery of the box body is provided with a continuous mounting surface, a plurality of connecting holes are formed in the mounting surface at intervals, and the box body is connected with the motor shell through the mounting surface and the connecting holes.
Further, the low voltage connector passes through a side wall of the box body and is connected to the PCBA circuit board in a butt-plug manner through a wire harness connector.
Further, the bottom surface of the box body is provided with an installation cavity at the position of the direct current bus connector, and the direct current cover plate is arranged on the installation cavity through bolts.
The arrangement structure of the motor controller of the electric automobile adopts the technical scheme that the direct current bus connector and the pressure connector are arranged on two sides of the box body, and the direct current cover plate is arranged on the bottom surface of the box body; the thin film capacitor assembly and the PCBA integrated circuit module are sequentially stacked in the box body, the PCBA integrated circuit module comprises a PCBA circuit board, a current sensor, a power module and a filter capacitor, the power module and the filter capacitor are respectively arranged on the PCBA circuit board at intervals, the current sensor is arranged on the PCBA circuit board and is positioned on one side of the power module, and three-phase busbar of the power module passes through the current sensor and is arranged side by side; the thin film capacitor assembly comprises a filtering magnetic ring, a conductive column and a thin film capacitor, wherein the conductive column and a shell of the thin film capacitor are integrally injection molded, the filtering magnetic ring is encapsulated in a groove of the shell of the thin film capacitor, the conductive column is positioned in the filtering magnetic ring, the PCBA circuit board is fixed to the top end of the conductive column through a bolt, and the direct current bus connector terminal is fixed to the bottom end of the conductive column through a bolt. The structure realizes high integration through the modularization, the inside is connected without the switching wire harness and the copper bar, the cost is lower, the integration level is high, and the assembly efficiency is high.
Drawings
The utility model is described in further detail below with reference to the attached drawings and embodiments:
FIG. 1 is an exploded schematic view of the arrangement of the motor controller of the electric vehicle of the present utility model;
FIG. 2 is an assembled schematic view of the present arrangement;
FIG. 3 is a schematic view of the back of the case in this arrangement;
FIG. 4 is a schematic diagram of a PCBA integrated circuit module in the present arrangement;
FIG. 5 is a schematic diagram of a PCBA circuit board of a PCBA integrated circuit module in the present arrangement;
FIG. 6 is a schematic surface view of a thin film capacitor assembly in the present arrangement;
fig. 7 is a schematic bottom view of a thin film capacitor assembly in the present arrangement.
Detailed Description
1-7, The arrangement structure of the electric vehicle motor controller of the present utility model includes a box 3, a dc cover 5, a dc bus connector 4 and a pressure connector 6, wherein the dc bus connector 4 and the pressure connector 6 are respectively disposed at two sides of the box 3, the dc cover 5 is disposed at the bottom surface of the box 3 and covers the dc bus connector 4, the structure further includes a thin film capacitor assembly 2 and a PCBA integrated circuit module 1, and the thin film capacitor assembly 2 and the PCBA integrated circuit module 1 are sequentially stacked in the box 3;
The PCBA integrated circuit module 1 comprises a PCBA circuit board 11, a current sensor 12, a power module 13 and a filter capacitor 14, wherein the power module 13 and the filter capacitor 14 are respectively arranged on the PCBA circuit board 11 at intervals, the current sensor 12 is arranged on the PCBA circuit board 11 and is positioned on one side of the power module 13, and three-phase busbar of the power module 13 passes through the current sensor 12 and is arranged side by side;
The film capacitor assembly 2 comprises a filtering magnetic ring 21, a conductive column 22 and a film capacitor 23, wherein the conductive column 22 and a shell of the film capacitor 23 are integrally injection molded, the filtering magnetic ring 21 is encapsulated in a groove of the shell of the film capacitor 23 through epoxy glue, the conductive column 22 is positioned in the filtering magnetic ring 21, the PCBA circuit board 11 is fixed to the top end of the conductive column 22 through bolts, and the direct-current bus connector 4 terminal is fixed to the bottom end of the conductive column 22 through bolts.
Preferably, the PCBA circuit board 11 is provided with a driving function circuit area 111, an auxiliary power supply function circuit area 112, a control function circuit area 113, and an EMC filter function circuit area 114 in sequence along the length direction, wherein the auxiliary power supply function circuit area 112 and the control function circuit area 113 are arranged in parallel; the current sensor 12 and the power module 13 are located at the back of the driving function circuit area 111 of the PCBA circuit board 11, the filter capacitor 14 is located at the back of the EMC filter function circuit area 114 of the PCBA circuit board 11, and the auxiliary power function circuit area 112 and the EMC filter function circuit area 114 are connected with the conductive posts 22 of the thin film capacitor assembly 2 through bolts, and obtain high voltage current.
Preferably, the conductive columns 22 of the thin film capacitor assembly 2 are connected with the busbar of the thin film capacitor 23, and the output busbar of the thin film capacitor assembly 2 is connected with the busbar of the corresponding polarity of the power module 13.
Preferably, the box 3 is provided with a cooling water channel, a water inlet pipe 31 and a water outlet pipe 32, the water inlet pipe 31 and the water outlet pipe 32 are respectively communicated with two ends of the cooling water channel, and the power module 13 is provided with a heat dissipation column and is embedded into the cooling water channel.
Preferably, the water inlet pipe 31 and the water outlet pipe 32 are respectively arranged on the front surface and the back surface of the box body 3, and are respectively connected with a cooling circulation system of the whole vehicle.
Preferably, the bottom surface of the thin film capacitor 23 housing of the thin film capacitor assembly 2 is coated with heat conducting glue, and heat generated in the thin film capacitor assembly 2 is conducted to the box 3 through the heat conducting glue to dissipate heat.
Preferably, when the PCBA integrated circuit module 1 is mounted in the box 3, the filter capacitor 14 is embedded in a groove inside the box 3, and the filter capacitor 14 is fixed by filling a fixing glue in the groove.
Preferably, the periphery of the box body 3 is provided with a continuous mounting surface, a plurality of connecting holes are arranged on the mounting surface at intervals, and the box body 3 is connected with the motor shell through the mounting surface and the connecting holes.
Preferably, the low voltage connector 6 passes through the side wall of the box 3 and is plugged into the PCBA circuit board 11 by a harness connector.
Preferably, the bottom surface of the box body 3 is provided with a mounting cavity 33 at the dc bus connector 4, and the dc cover plate 5 is arranged on the mounting cavity 33 through bolts.
The PCBA circuit board comprises a driving function circuit area, a control function circuit area, an auxiliary power supply function circuit area and an EMC filtering function circuit area, so that the multifunction of one circuit board is realized, and wireless beam plug-in connection among functions of the circuit board is realized. The cost of the whole motor controller is reduced, the reject ratio caused by the opposite insertion of the wire harness plug-in is reduced, the power density is improved, and the whole layout of the electric automobile is facilitated.
Claims (10)
1. The utility model provides an electric automobile motor controller's arrangement structure, includes box, direct current apron, direct current busbar connector and crimping plug-in components are located respectively the box both sides, the direct current apron is located the box bottom surface covers direct current busbar connector, its characterized in that: the thin film capacitor assembly and the PCBA integrated circuit module are sequentially stacked in the box body;
The PCBA integrated circuit module comprises a PCBA circuit board, a current sensor, a power module and a filter capacitor, wherein the power module and the filter capacitor are respectively arranged on the PCBA circuit board at intervals, the current sensor is arranged on the PCBA circuit board and is positioned on one side of the power module, and three-phase busbar of the power module passes through the current sensor and is arranged side by side;
The thin film capacitor assembly comprises a filtering magnetic ring, a conductive column and a thin film capacitor, wherein the conductive column and a shell of the thin film capacitor are integrally injection molded, the filtering magnetic ring is encapsulated in a groove of the shell of the thin film capacitor through epoxy glue, the conductive column is located in the filtering magnetic ring, the PCBA circuit board is fixed to the top end of the conductive column through bolts, and the direct current bus connector terminal is fixed to the bottom end of the conductive column through bolts.
2. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: the PCBA circuit board is sequentially provided with a driving function circuit area, an auxiliary power supply function circuit area, a control function circuit area and an EMC filtering function circuit area along the length direction, wherein the auxiliary power supply function circuit area and the control function circuit area are arranged in parallel; the current sensor and the power module are located on the back of the driving function circuit area of the PCBA circuit board, the filter capacitor is located on the back of the EMC filter function circuit area of the PCBA circuit board, and the auxiliary power supply function circuit area and the EMC filter function circuit area are connected with the conductive column of the thin film capacitor assembly through bolts and acquire high-voltage current.
3. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: the conductive column of the thin film capacitor assembly is connected with the busbar of the thin film capacitor, and the output busbar of the thin film capacitor assembly is connected with the busbar of the corresponding polarity of the power module.
4. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: the box is equipped with cooling water course, inlet tube and outlet pipe communicate respectively the cooling water course both ends, power module is equipped with the heat dissipation post and imbeds to the cooling water course.
5. The arrangement structure of the electric vehicle motor controller according to claim 4, characterized in that: the water inlet pipe and the water outlet pipe are respectively arranged on the front surface and the back surface of the box body and are respectively connected with the whole car cooling circulation system.
6. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: the bottom surface of the thin film capacitor shell of the thin film capacitor assembly is coated with heat conducting glue, and heat generated in the thin film capacitor assembly is conducted to the box body through the heat conducting glue to dissipate heat.
7. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: when the PCBA integrated circuit module is installed in the box body, the filter capacitor is embedded into the groove in the box body, and the filter capacitor is fixed by filling the fixing glue in the groove.
8. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: the periphery of the box body is provided with a continuous mounting surface, a plurality of connecting holes are formed in the mounting surface at intervals, and the box body is connected with the motor shell through the mounting surface and the connecting holes.
9. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: the low voltage connector passes through the side wall of the box body and is connected to the PCBA circuit board in a plug-in mode through a wire harness connector.
10. The arrangement structure of the electric vehicle motor controller according to claim 1, characterized in that: the box bottom surface is equipped with the installation cavity in direct current busbar connector department, direct current apron is located on the installation cavity through the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322794594.5U CN221103791U (en) | 2023-10-18 | 2023-10-18 | Arrangement structure of motor controller of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322794594.5U CN221103791U (en) | 2023-10-18 | 2023-10-18 | Arrangement structure of motor controller of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221103791U true CN221103791U (en) | 2024-06-07 |
Family
ID=91309371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322794594.5U Active CN221103791U (en) | 2023-10-18 | 2023-10-18 | Arrangement structure of motor controller of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221103791U (en) |
-
2023
- 2023-10-18 CN CN202322794594.5U patent/CN221103791U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |