Power supply device, power assembly and electric vehicle

Abstract

The utility model provides a power supply device, a power assembly and an electric vehicle. A groove-shaped shell of the power supply device is used for containing a capacitor filtering integrated module and a three-phase power module which are arranged in a stacked mode. A pair of first connecting copper bars in the capacitor filtering integrated module is used for electrically connecting at least one of the bus capacitor and the filtering assembly with the high-voltage connector. The two first side walls of the groove-shaped shell are oppositely arranged in the first direction, the two second side walls of the groove-shaped shell are oppositely arranged in the second direction, the direct-current mounting holes are distributed in one first side wall and used for fixing a high-voltage connector used for being electrically connected with a power battery, and the pair of first connecting copper bars is opposite to one first side wall in the first direction and used for fixing a high-voltage connector used for being electrically connected with the power battery. And the three pairs of second connecting copper bars are electrically connected with the input copper bar of the three-phase power module and are opposite to one second side wall along the second direction, and the output copper bar of the three-phase power module is opposite to the other second side wall along the second direction, so that all parts in the capacitor filtering integrated module in the groove-shaped shell are mounted and fixed without mutual interference, and more convenience is realized.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, and in particular to a power supply device, powertrain, and electric vehicle. Background Technology

[0002] The power battery of an electric vehicle converts high-voltage direct current into alternating current through a power supply device to provide power to the drive motor. In order to provide a stable current with less interference, filter components and bus capacitors need to be installed in the power supply device. This results in a large number of electromagnetic components in the power supply device, as well as a large number of connection components and transfers when the power battery transmits high-voltage direct current to the power supply device, leading to a complex assembly problem for the power supply device. Utility Model Content

[0003] This application provides a power supply device, a powertrain, and an electric vehicle to simplify the assembly process of the power supply device.

[0004] In a first aspect, this application provides a power supply device, which includes a capacitor filter integrated module and a three-phase power module. The power supply device includes a slotted housing for accommodating the capacitor filter integrated module and the three-phase power module, with the three-phase power module stacked on top of the capacitor filter integrated module. The capacitor filter integrated module includes a bus capacitor, a filter assembly, a pair of first connecting copper busbars, and three pairs of second connecting copper busbars. The bus capacitor and filter assembly are used for filtering and stabilizing high-voltage DC power. The pair of first connecting copper busbars is used to electrically connect at least one of the bus capacitor and filter assembly to a high-voltage connector. The three pairs of second connecting copper busbars are used to electrically connect to the input copper busbar of the three-phase power module. The output copper busbar of the three-phase power module is used to connect to a drive motor via a three-phase connector. The channel-shaped housing includes two first sidewalls, two second sidewalls, and a DC mounting hole. The two first sidewalls are arranged opposite each other along a first direction, and the two second sidewalls are arranged opposite each other along a second direction, which is perpendicular to the first direction. The DC mounting hole is distributed on one of the first sidewalls and is used to fix a high-voltage connector. The high-voltage connector is used to electrically connect to the power battery. A pair of first connecting copper busbars are opposite to one of the first sidewalls along the first direction. Three pairs of second connecting copper busbars and the input copper busbar of the three-phase power module are opposite to one of the second sidewalls along the second direction. The output copper busbar of the three-phase power module is opposite to another second sidewall along the second direction.

[0005] In this embodiment, the capacitor filter integrated module integrates a bus capacitor, a filter component, a pair of first connecting copper busbars and three pairs of second connecting copper busbars, which makes the power supply device more integrated and fused. The capacitor filter integrated module can also be assembled first and then installed into the slotted housing, which simplifies the assembly process of the power supply device.

[0006] In this embodiment, the high-voltage connector transmits the high-voltage DC power from the power battery to at least one of the bus capacitor and the filter component via a pair of first connecting copper busbars. The high-voltage DC power is then filtered and stabilized by the bus capacitor and the filter component. The filtered and stabilized high-voltage DC power is then transmitted to the input copper busbar of the three-phase power module via three pairs of second connecting copper busbars. The three-phase power module converts the high-voltage DC power into three-phase AC power, and then outputs the three-phase AC power from the output copper busbar to the drive motor via the three-phase connector, causing the motor rotor of the drive motor to rotate.

[0007] In this embodiment, DC mounting holes are distributed on a first sidewall. These holes are used to fix a high-voltage connector, which is used to electrically connect to the power battery. A pair of first connecting copper busbars are opposite to the first sidewall along a first direction, facilitating the installation of the two first connecting copper busbars into the slotted housing after they are fixed to the capacitor filter integrated module, and then electrically connected to the high-voltage connector fixed in the DC mounting holes. This also allows the pair of first connecting copper busbars to be closer to the high-voltage connector fixed to the first sidewall, facilitating the input of high-voltage DC power from the high-voltage connector into the capacitor filter integrated module via the pair of first connecting copper busbars.

[0008] In this embodiment, the three pairs of second connecting copper busbars and the input copper busbars of the three-phase power module are positioned opposite a second sidewall along a second direction. Arranging all three pairs of second connecting copper busbars and the input copper busbars of the three-phase power module near this second sidewall allows for closer proximity between them. This facilitates the stacking of the three pairs of second connecting copper busbars and the input copper busbars of the three-phase power module. Stacking the three-phase power module on top of the capacitor filter integrated module prevents the arrangement of the three-phase power module from occupying additional space along the second direction of the capacitor filter integrated module, thus promoting miniaturization of the power supply device. Furthermore, the stacked arrangement of the three pairs of second connecting copper busbars and the input copper busbars of the three-phase power module eliminates the need for additional adapters for electrical connections between them, reducing the number of components, simplifying the assembly process, and improving the integration and cohesion of the power supply device.

[0009] In this embodiment, the output copper busbar of the three-phase power module is opposite to another second sidewall along the second direction, so that the input copper busbar and the output copper busbar of the three-phase power module can be arranged opposite each other along the second direction. This ensures that the output copper busbar of the three-phase power module transmitting three-phase AC power and the three pairs of second connecting copper busbars transmitting DC power will not interfere with each other. It also facilitates the electrical connection and assembly of the output copper busbar with the three-phase connector arranged in the middle of the slotted housing for receiving the three-phase AC power output from the three-phase power module. Arranging the three-phase connector in the middle of the slotted housing does not require additional space for the power supply device along the second direction.

[0010] In this embodiment, the three-phase power module and the capacitor filter integrated module are stacked, with DC mounting holes distributed on a first sidewall. A pair of first connecting copper busbars are opposite to the first sidewall along a first direction, allowing the pair of first connecting copper busbars to be arranged close to the high-voltage connector for convenient electrical connection and assembly. Meanwhile, three pairs of second connecting copper busbars and the input copper busbar of the three-phase power module are opposite to a second sidewall along a second direction, and the output copper busbar of the three-phase power module is opposite to another second sidewall along a second direction. This allows the capacitor filter integrated module and the three-phase power module to be arranged along the first direction in their length direction. The width direction of the three-phase power module is arranged along the second direction, so that the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars of the three-phase power module are arranged on different sides of the capacitor filter integrated module with the high-voltage connector and one pair of first connecting copper busbars. This ensures that the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars of the three-phase power module will not interfere with the arrangement of the high-voltage connector and one pair of first connecting copper busbars. It also makes the arrangement of the high-voltage connector, one pair of first connecting copper busbars, capacitor filter integrated module, and three-phase power module in the slot-shaped housing more compact, and facilitates the assembly process of the high-voltage connector, capacitor filter integrated module, and three-phase power module in the slot-shaped housing.

[0011] In one embodiment, the grooved housing further includes three-phase wire mounting holes distributed on another first sidewall, which are used to fix three-phase connectors.

[0012] In this embodiment, the three-phase mounting holes are distributed on another first sidewall, and the DC mounting holes are distributed on one first sidewall, such that the three-phase mounting holes and the DC mounting holes are arranged opposite to each other along the first direction, so that the three-phase connector fixed to the three-phase mounting holes will not interfere with the high-voltage connector fixed to the DC mounting holes.

[0013] In this embodiment, the three-phase wire mounting holes are distributed on another first sidewall, and the DC mounting holes are distributed on one first sidewall. This allows the high-voltage DC power input to the power supply device from the high-voltage connector fixed to the DC mounting holes to be converted into three-phase AC power by the three-phase power module and then output to the drive motor more smoothly via a short path from the three-phase connector fixed to the three-phase wire mounting holes. It also facilitates the electrical connection and installation of the output copper busbar of the three-phase power module with the three-phase connector.

[0014] In this embodiment, the three-phase mounting holes and the DC mounting holes are arranged opposite each other along the first direction, which can make the current flow in the power supply device more reasonable and the circuit layout more orderly.

[0015] In one embodiment, the distance between the three-phase mounting hole and a second sidewall along the second direction is greater than the distance between the DC mounting hole and a second sidewall.

[0016] In this embodiment, since the input and output copper busbars of the three-phase power module are arranged along a second direction, and the distance between the three-phase line mounting holes and a second sidewall is greater than the distance between the DC mounting holes and a second sidewall, the three-phase line mounting holes and the DC mounting holes can be staggered along the second direction. This facilitates arranging the three-phase connectors fixed to the three-phase line mounting holes away from a second sidewall along the second direction, thereby making it easier to electrically connect and assemble the output copper busbars of the three-phase power module, which are arranged opposite to the other second sidewall, with the three-phase connectors. Furthermore, the closer distance between the output copper busbars and the three-phase connectors also allows for a shorter and faster path for the output copper busbars to transmit three-phase AC power to the three-phase connectors, reducing power loss.

[0017] In one embodiment, the bottom of the groove-shaped housing includes a shielding protrusion, which is arranged between two first sidewalls along a first direction. The space between the shielding protrusion and the other first sidewall is used to accommodate a capacitor filter integrated module. The space between the shielding protrusion and the first sidewall is used to accommodate a filter magnetic ring. A high-voltage connector passes through the filter magnetic ring. The shielding protrusion includes a clearance notch for a pair of first connecting copper busbars to pass through.

[0018] In this embodiment, shielding protrusions are arranged between two first sidewalls along the first direction. The space between the shielding protrusion and the other first sidewall is used to accommodate the capacitor filter integrated module. The space between the shielding protrusion and the first sidewall is used to accommodate the filter magnetic ring. The high-voltage connector passes through the filter magnetic ring. The shielding protrusions can isolate electrical interference between the capacitor filter integrated module, the filter magnetic ring, and the high-voltage connector, so that the capacitor filter integrated module, the filter magnetic ring, and the high-voltage connector can work normally relatively independently, which is beneficial to ensuring the normal operation of the power supply device.

[0019] In this embodiment, the shielding protrusion includes a clearance notch for passing through a pair of first connecting copper busbars, facilitating the installation of the pair of first connecting copper busbars that are electrically connected to the high-voltage connector. This eliminates the need for the pair of first connecting copper busbars to extend into the capacitor filter integrated module from above the shielding protrusion, ensuring that the pair of first connecting copper busbars do not occupy additional space in the height direction of the shielding protrusion, which is beneficial for the miniaturization of the power supply device.

[0020] In one embodiment, the spacing between a pair of first connecting copper busbars and the output copper busbars of the three-phase power module along the second direction is less than the spacing between a pair of first connecting copper busbars and three pairs of second connecting copper busbars. The spacing between the clearance notch along the second direction and a second sidewall is greater than half the length of the shielding protrusion along the second direction.

[0021] In this embodiment, a pair of first connecting copper busbars and a first sidewall are opposite each other along a first direction. The distance between the pair of first connecting copper busbars and the output copper busbars of the three-phase power module along a second direction is less than the distance between the pair of first connecting copper busbars and the three pairs of second connecting copper busbars. This allows the pair of first connecting copper busbars to be positioned away from the three pairs of second connecting copper busbars along the second direction. This also allows for reserved space between the pair of first connecting copper busbars and the three pairs of second connecting copper busbars along the second direction to accommodate the filter magnetic ring and the high-voltage connector. This facilitates the assembly of the filter magnetic ring and the high-voltage connector after the capacitor filter integrated module is assembled into the slotted housing.

[0022] In this embodiment, since the pair of first connecting copper busbars in the capacitor filter integrated module are far from the three pairs of second connecting copper busbars, it is necessary to arrange the end of the avoidance notch away from a second sidewall. The distance between the avoidance notch along the second direction and a second sidewall is greater than half the length of the shielding protrusion along the second direction. This allows the pair of first connecting copper busbars in the capacitor filter integrated module to pass through the avoidance notch. In addition to ensuring that the shielding protrusion can isolate the electrical interference between the capacitor filter integrated module and the filter magnetic ring, it also facilitates the installation and fixing of the capacitor filter integrated module with the pair of first connecting copper busbars.

[0023] In one embodiment, the distance between the DC mounting hole along the second direction and a second sidewall is less than the distance between the clearance notch and a second sidewall, and the space between the shielding protrusion and a first sidewall is also used to accommodate a pair of transition copper busbars for connecting the high-voltage connector and a pair of first connecting copper busbars.

[0024] In this embodiment, a pair of first connecting copper busbars need to pass through the clearance notch. The distance between the DC mounting hole and a second sidewall is smaller than the distance between the clearance notch and a second sidewall in the second direction, so that the clearance notch is arranged away from the DC mounting hole in the second direction. This allows the clearance notch to be away from the high-voltage connector, thereby providing sufficient space between the shielding protrusion and a first sidewall and a second sidewall to accommodate a pair of adapter copper busbars.

[0025] In this embodiment, a DC mounting hole is used to fix the high-voltage connector, and a clearance notch is used to pass through a pair of first connecting copper busbars. The distance between the DC mounting hole and a second sidewall along the second direction is less than the distance between the clearance notch and a second sidewall, causing the DC mounting hole and the clearance notch to be misaligned along the second direction. By using a pair of adapter copper busbars to connect the high-voltage connector and the pair of first connecting copper busbars, the pair of first connecting copper busbars can be made shorter, facilitating their integration into the capacitor filter integrated module. Furthermore, using a pair of adapter copper busbars to connect the high-voltage connector and the pair of first connecting copper busbars also allows for more flexible installation and arrangement of the high-voltage connector and the pair of first connecting copper busbars.

[0026] In one embodiment, the power supply device further includes multiple electrical components of an on-board charger, the multiple electrical components of the on-board charger, a capacitor filter integrated module and a second sidewall arranged along a second direction, and a pair of adapter copper busbars for electrically connecting the multiple electrical components of the on-board charger.

[0027] In this embodiment, multiple electrical components of the on-board charger, the capacitor filter integrated module, and a second sidewall are arranged along a second direction, so that the multiple electrical components of the on-board charger and the capacitor filter integrated module in the power supply device can be laid flat in the slotted housing along the second direction. This is beneficial to reduce the space in the height direction of the power supply device and also facilitates the assembly of the on-board charger and the capacitor filter integrated module into the slotted housing from the direction of the slot opening.

[0028] In this embodiment, a pair of adapter copper busbars are also used to electrically connect multiple electrical components of the on-board charger, so that the high-voltage DC power received by the pair of adapter copper busbars from the high-voltage connector can supply not only the capacitor filter integrated module but also the on-board charger. Furthermore, the high-voltage DC power flowing into the capacitor filter integrated module and the high-voltage DC power flowing into the on-board charger can share a single filter magnetic ring for filtering, thereby improving the integration of the power supply device and reducing the number of components used in the power supply device, thus reducing costs. The reduction in the number of components can also simplify the assembly process of the power supply device.

[0029] In one embodiment, each second connecting copper busbar includes a bent section and an overlapping section. The bent section is bent away from a second sidewall along a second direction. The overlapping section is stacked on the housing of the capacitor filter integrated module along the stacking direction of the three-phase power module and the capacitor filter integrated module. Each overlapping section is used to overlap one input copper busbar of the three-phase power module.

[0030] In this embodiment, each second connecting copper busbar includes a bent section and an overlapping section. The bent section bends away from a second sidewall along a second direction, allowing the overlapping section connected to the bent section to be positioned closer to the three-phase power module. This prevents the second connecting copper busbar from occupying additional space in the housing of the capacitor filter integrated module along the second direction. It also increases the height of the overlapping section of the second connecting copper busbar along the stacking direction of the three-phase power module and the capacitor filter integrated module. Raising the overlapping section facilitates direct overlapping between each overlapping section and one input copper busbar of the three-phase power module without the need for additional adapters, simplifying the assembly process of the input copper busbar of the three-phase power module and the three pairs of second connecting copper busbars.

[0031] In this embodiment, the overlapping section of the three-phase power module and the capacitor filter integrated module is stacked on the housing of the capacitor filter integrated module along the stacking direction, and the three-phase power module is also stacked on the housing of the capacitor filter integrated module, thereby making it easier to assemble and connect the overlapping section of the second connecting copper busbar with the input copper busbar of the three-phase power module.

[0032] In one embodiment, the two second connecting copper busbars are also used to connect an external copper busbar respectively. The external copper busbars are stacked on the housing along the stacking direction of the three-phase power module and the capacitor filter integrated module. The external copper busbars are spaced apart from the overlapping section. The external copper busbars are used to connect capacitors or to connect DC converters of power supply devices.

[0033] In this embodiment, an external copper busbar is stacked on the housing along the stacking direction of the three-phase power module and the capacitor filter integrated module. The external copper busbar and the overlapping section are spaced apart, so that the overlapping section of the external copper busbar and the second connecting copper busbar can work relatively independently.

[0034] In this embodiment, the external copper busbar is used to connect capacitors or DC converters for power supply devices. This allows for the expansion of capacity by connecting external capacitors to the casing of the capacitor filter integrated module according to the high power requirements of the power supply device. It also allows the high-voltage DC power filtered and regulated by the capacitor filter integrated module to be directly transmitted to the DC converter via the external copper busbar. The DC converter then converts the high-voltage DC power into low-voltage DC power for use by low-voltage DC electrical components.

[0035] In one embodiment, the housing of the capacitor filter integrated module includes a capacitor cavity and a first shielding wall. The capacitor cavity includes a first cavity wall and a second cavity wall arranged opposite to each other along a first direction. The bus capacitor includes two sets of capacitor cores, each set of capacitor cores including at least one capacitor core. The two sets of capacitor cores are arranged along a second direction, and the length of one set of capacitor cores along the first direction is greater than the length of the other set of capacitor cores. The first cavity wall includes a first segment and a second segment arranged along the second direction. The distance between the second segment and the second cavity wall along the first direction is less than the distance between the first segment and the second cavity wall. The space between the first segment and the second cavity wall is used to accommodate one set of capacitor cores. The space between the inner side of the second segment and the second cavity wall is used to accommodate another set of capacitor cores and a portion of the electrical components of the filter assembly. The outer side of the second segment is used to enclose the first shielding wall to form a receiving groove. The receiving groove accommodates another portion of the electrical components of the filter assembly. The receiving groove includes an opening for a pair of first connecting copper busbars to pass through. The opening faces a first sidewall along the first direction.

[0036] In this embodiment, the distance between the second segment and the second cavity wall along the first direction is smaller than the distance between the first segment and the second cavity wall, and the distance between the first segment and the second cavity wall along the first direction is larger, so that the space between the first segment and the second cavity wall can be used to accommodate a group of capacitor cores with a longer length along the first direction. The distance between the second segment and the second cavity wall along the first direction is smaller, and the length of another group of capacitor cores along the first direction is smaller, so that the space between the inner side of the second segment and the second cavity wall is also sufficient to accommodate another group of capacitor cores and part of the electrical components of the filter assembly.

[0037] In this embodiment, the second outer section is used to enclose the first shielding wall to form a receiving groove. The receiving groove accommodates another part of the electrical components of the filter assembly. The receiving groove is formed by using the remaining space of one set of capacitor cores relative to another set of capacitor cores along the first direction to enclose the first shielding wall. The layout of the receiving groove borrows part of the space of the capacitor cavity, so that the formation of the receiving groove will not occupy too much space of the capacitor cavity along the first and second directions, and the overall volume of the capacitor filter integrated module is small.

[0038] In this embodiment, the receiving slot includes an opening for a pair of first connecting copper busbars to pass through, thereby allowing the pair of first connecting copper busbars to be fixed and electrically connected to the capacitor filter integrated module from the opening of the receiving slot, facilitating installation. It also eliminates the need for the pair of first connecting copper busbars to pass through the cavity wall of the capacitor cavity, allowing electrical isolation between the pair of first connecting copper busbars and the bus capacitor within the capacitor cavity through the cavity wall, which is beneficial for the normal operation of the power supply device.

[0039] In this embodiment of the application, the opening faces a first sidewall along a first direction, which facilitates the electrical connection and installation of a pair of first connecting copper busbars passing through the opening with a high-voltage connector fixed to a DC mounting hole on a first sidewall.

[0040] In one embodiment, the first shielding wall can be an iron plate, steel plate, or silicon steel plate, etc. In another embodiment, the first shielding wall can be injection molded from both injection molding compound and shielding material, wherein the shielding material includes iron, steel, or silicon steel.

[0041] In one embodiment, the capacitor cavity further includes a connecting segment for connecting the first segment and the second segment. The connecting segment is arranged opposite to the first shielding wall along the second direction. The housing further includes a second shielding wall, which is arranged adjacent to the connecting segment along the first direction. The second shielding wall is arranged opposite to the first shielding wall along the second direction. The second shielding wall is used to enclose the connecting segment, the first shielding wall, and the outer side of the second segment to form a receiving groove. The second shielding wall and the first shielding wall form the opening of the receiving groove.

[0042] In this embodiment, the connecting segment along the second direction is arranged opposite to the first shielding wall, and the housing also includes a second shielding wall. The second shielding wall and the connecting segment are arranged adjacent to each other along the first direction. The second shielding wall is used to enclose the connecting segment, the first shielding wall and the outer side of the second segment to form a receiving groove. This allows the second shielding wall to extend the length of the connecting segment and expand the space of the receiving groove along the first direction when the length of the connecting segment is insufficient to form a sufficiently large receiving groove to accommodate another part of the electrical components of the filter assembly. This allows the second shielding wall to be used to extend the length of the connecting segment and expand the space of the receiving groove along the first direction, so that the other part of the electrical components of the filter assembly can be completely installed and fixed in the receiving groove.

[0043] In this embodiment, the second shielding wall is used to enclose the connecting section, the first shielding wall, and the outer side of the second section to form a receiving groove. The second shielding wall and the first shielding wall form the opening of the receiving groove, so that when the other part of the electrical components of the filter assembly is installed and fixed in the receiving groove, it can be done from the direction of the opening of the receiving groove. The opening of the receiving groove is also used to pass through a pair of first connecting copper busbars, which also facilitates the pair of first connecting copper busbars to transmit the high voltage DC power received from the power battery through the other part of the electrical components of the filter assembly into the capacitor filter integrated module.

[0044] In one embodiment, the second shielding wall and the connecting segment along the first direction need to satisfy the requirement that the sum of the lengths of the second shielding wall and the connecting segment is sufficient to accommodate another portion of the electrical components of the filter assembly. In some embodiments, if the length of the connecting segment is long enough, it may not be necessary to arrange a second shielding wall to extend its length.

[0045] In one embodiment, the second shielding wall can be an iron plate, steel plate, or silicon steel plate, etc. In another embodiment, the second shielding wall can be injection molded from injection molding compound and shielding material, the shielding material including iron, steel, or silicon steel. In one embodiment, during the injection molding of the housing, shielding material can be added at the locations where the first and second shielding walls are injection molded, so that these shielding materials are integrally injection molded into the injection molding compound to form the first and second shielding walls.

[0046] In one embodiment, the capacitor cavity includes a top plate and a bottom plate, which are opposite each other along the stacking direction of the three-phase power module and the capacitor filter integrated module. The surface of the top plate facing away from the bottom plate is used to fix the three-phase power module. A portion of the surface of the top plate facing the bottom plate forms the bottom of a receiving groove, and the opening of the receiving groove faces away from the top plate along the stacking direction of the capacitor filter integrated module and the bottom of the groove-shaped housing.

[0047] In this embodiment, the top plate and the bottom plate are opposite each other along the stacking direction of the three-phase power module and the capacitor filter integrated module. The surface of the top plate away from the bottom plate is used to fix the three-phase power module, so that the arrangement of the three-phase power module can utilize the space of the capacitor cavity along the first and second directions, which is beneficial to reduce the size of the power supply device along the first and second directions.

[0048] In this embodiment, a portion of the surface of the top plate facing the bottom plate forms the bottom of the receiving groove, so that the receiving groove can reuse a portion of the top plate of the capacitor cavity to form the bottom of the groove, so that the receiving groove will not occupy additional space of the capacitor cavity along the first and second directions, which is beneficial to make the capacitor filter integrated module have a smaller volume along the first and second directions, and is beneficial to the miniaturization of the power supply device.

[0049] In this embodiment, since the surface of the top plate facing away from the bottom plate is used to fix the three-phase power module, the slot opening of the receiving slot is facing away from the top plate along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing, so that another part of the electrical components of the filter assembly can be arranged and installed from the slot opening direction of the receiving slot, which facilitates the installation and fixing of the filter assembly of the capacitor filter integrated module.

[0050] In one embodiment, the bottom plate of the capacitor cavity includes a recessed groove for accommodating the connectors of the filter assembly and the bus capacitor. The recessed groove is recessed towards the top plate along the stacking direction of the capacitor filter integrated module and the bottom of the slotted housing. A portion of the electrical components of the filter assembly includes multiple first capacitors for electrically connecting to a first connecting copper busbar. The space between the bottom of the recessed groove and the top plate accommodates the multiple first capacitors of the filter assembly. The bottom of the recessed groove also includes a through-hole extending through the bottom of the recessed groove along the stacking direction of the three-phase power module and the capacitor filter integrated module. The through-hole connects the capacitor cavity and the recessed groove and allows a grounding plate to pass through. The grounding plate electrically connects the multiple first capacitors and electrically connects to the slotted housing.

[0051] In this embodiment, the recessed slot along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing is recessed towards the top plate, which ensures that the connection of the filter component and the bus capacitor will not occupy additional space outside the stacking direction of the bottom plate of the capacitor cavity along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing.

[0052] In this embodiment, the height of a portion of the electrical components of the filter assembly is lower than the height of the capacitor core of the bus capacitor. Therefore, by designing a recessed groove in the top plate, the connectors of the filter assembly and the bus capacitor are arranged in the recessed groove, and a portion of the electrical components of the filter assembly are placed inside the recessed groove. This ensures that the connectors between the filter assembly and the bus capacitor do not additionally increase or decrease the dimensions of the capacitor filter integrated module along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing. This fully utilizes the space of the housing of the capacitor filter integrated module, making the overall volume of the capacitor filter integrated module smaller and facilitating the assembly of the capacitor filter integrated module into the slot-shaped housing.

[0053] In this embodiment, a plurality of first capacitors are used to electrically connect to a first connecting copper busbar, so that the first capacitors can receive high-voltage direct current transmitted from a pair of first connecting copper busbars.

[0054] In this embodiment, the bottom of the clearance slot also includes a through hole. The through hole extends through the bottom of the clearance slot along the stacking direction of the three-phase power module and the capacitor filter integrated module, allowing the grounding plate to directly pass through the through hole to electrically connect the multiple first capacitors in the capacitor cavity to the slot-shaped housing. This also allows the multiple first capacitors in the capacitor cavity to be grounded by the slot-shaped housing, which helps ensure the normal operation of the capacitor filter integrated module. Furthermore, it allows the grounding plate to be directly electrically connected to the slot-shaped housing after the capacitor filter integrated module is assembled. In one embodiment, the first capacitor is a subsequent capacitor in the filter assembly, and the grounding plate is used to electrically connect to the subsequent capacitor in the filter assembly.

[0055] In one embodiment, the connector between the filter assembly and the bus capacitor includes a fourth connecting copper bus and a fifth connecting copper bus. The fourth connecting copper bus is used to embed another part of the electrical components of the filter assembly, and the fifth connecting copper bus is used to embed the capacitor cavity and electrically connect the bus capacitor. The fourth connecting copper bus is also used to fix the fifth connecting copper bus. The recessed slot includes two openings and a through hole. One opening is located away from the top plate along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing. The other opening faces the receiving slot along a first direction and is used to connect the receiving slot and the recessed slot, as well as to allow the fourth connecting copper bus to pass through. The through hole extends through the wall of the recessed slot along a second direction and is used to connect the capacitor cavity and the recessed slot, as well as to allow the fifth connecting copper bus to pass through.

[0056] In this embodiment, by opening two slots and wire holes in the recessed slot, the arrangement of the fourth and fifth connecting copper busbars in the connector is determined. One slot is located away from the top plate along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing, facilitating the installation of the connector from the direction away from the top plate. The other slot faces the receiving slot along the first direction. The other slot is used to connect the receiving slot and the recessed slot and to allow the fourth connecting copper busbar to pass through, facilitating the electrical connection between the fourth connecting copper busbar in the recessed slot and another part of the electrical components of the filter assembly in the receiving slot.

[0057] In this embodiment, the through hole penetrates the wall of the relief groove along the second direction. The through hole is used to connect the capacitor cavity and the relief groove and to pass through the fifth connecting copper busbar, so that the fifth connecting copper busbar can directly pass through the through hole and make electrical connection with the bus capacitor in the capacitor cavity, without the need to arrange cables or adapters from outside the housing of the capacitor filter integrated module, making the circuit layout more orderly.

[0058] In this embodiment, the clearance slot accommodates the fourth and fifth connecting copper busbars. The fourth connecting copper busbar passes through another slot and is electrically connected to another part of the electrical components of the filter assembly. The fifth connecting copper busbar passes through the wiring hole and is electrically connected to the bus capacitor. This makes the arrangement of the connecting parts of the filter assembly and the bus capacitor compact and allows the filter assembly and the bus capacitor to be electrically connected with the shortest copper busbar distance.

[0059] In one embodiment, the capacitor cavity further includes a third cavity wall connected to the first and second cavity walls. The third cavity wall extends along a first direction, and the third cavity wall, the second segment, and the first segment are arranged sequentially along a second direction. The clearance slot further includes a connecting hole penetrating the slot wall along the second direction. The connecting hole and the wire-passing hole are arranged opposite each other along the second direction. The connecting hole connects the clearance slot and the outer side of the third cavity wall. The grounding piece includes a bent portion, through which the connecting hole passes. The outer side of the third cavity wall is used to fix the bent portion.

[0060] In this embodiment, the recessed slot further includes a connecting hole that penetrates the slot wall along the second direction. This allows the bent portion of the grounding plate to pass directly through the connecting hole and be fixed to the outside of the third cavity wall via the shortest path, simplifying the electrical connection structure between the grounding plate and the multiple first capacitors and the slot-shaped housing within the capacitor filter integrated module. Furthermore, the arrangement of the grounding plate does not affect the arrangement of the filter components and bus capacitor connectors within the recessed slot, resulting in a more organized and rational layout of all components.

[0061] In one embodiment, the bottom of the groove-shaped housing includes a boss. The boss protrudes from the bottom of the groove towards the groove opening along the stacking direction of the three-phase power module and the capacitor filter integrated module. The boss is used for electrical connection with the grounding plate. Multiple electrical components of the on-board charger, the boss, and the capacitor filter integrated module are arranged sequentially along the second direction. The grounding plate has a bent portion, which can also make the grounding plate protrude outward from the third cavity wall, so that the grounding plate can better make a pressing contact electrical connection with the boss in the bottom of the groove-shaped housing.

[0062] In one embodiment, the capacitor cavity includes a wire outlet hole that extends through the cavity wall of the capacitor cavity along a second direction. The wire outlet hole is arranged opposite to the third cavity wall along the second direction, and the wire outlet hole is used to pass through three pairs of second connecting copper busbars.

[0063] In this embodiment, the capacitor cavity includes a wire outlet hole for passing through three pairs of second connecting copper busbars, so that the arrangement of the three pairs of second connecting copper busbars will not interfere with the arrangement of the electrical components of the filter assembly. It can also more smoothly transmit the high-voltage DC power transmitted by the filter assembly to the input copper busbar of the three-phase power module after filtering and current stabilization by the bus capacitor in the capacitor cavity.

[0064] In one embodiment, the wire outlet holes along the second direction are arranged opposite to a second sidewall.

[0065] In one embodiment, the filtering component includes an integrated bracket, which includes a plurality of filter capacitor slots. Another part of the electrical components of the filtering component includes a plurality of second capacitors. The plurality of filter capacitor slots are used to accommodate the plurality of second capacitors for fixing the filtering component. Two filter capacitor slots are distributed on both sides of the integrated bracket along a second direction, and the opening directions of the two filter capacitor slots are opposite to each other. The two filter capacitor slots are used to accommodate two second capacitors.

[0066] In this embodiment, an integrated bracket is designed to integrate multiple second capacitors of the filter assembly into one unit. This allows another part of the electrical components of the filter assembly to be integrated and installed in the receiving slot of the capacitor filter integrated module housing, facilitating installation. Using an integrated bracket to fix multiple second capacitors also increases the integration level of the filter assembly, which is beneficial for reducing the size of the filter assembly and capacitor filter integrated module. The second capacitor is the pre-stage capacitor in the filter assembly.

[0067] In this embodiment, two filter capacitor slots are distributed on both sides of the integrated bracket along the second direction. The opening directions of the two filter capacitor slots are opposite. The two filter capacitor slots are used to accommodate two second capacitors, which makes the arrangement of the second capacitors more regular and facilitates the installation of the second capacitors on the integrated bracket from both sides.

[0068] In one embodiment, the two second capacitors are capacitors and need to be grounded.

[0069] In one embodiment, the bottom of the integrated bracket includes a connector groove, the opening of which faces the same direction as the opening of the receiving groove. The connector groove is used to receive a portion of a metal component, another portion of which extends out of the connector groove, and another part of which is used to electrically connect to the slot-shaped housing of the power supply device.

[0070] In this embodiment, the opening of the connector groove faces the same direction as the opening of the receiving groove, and the opening of the receiving groove faces the bottom of the groove-shaped housing. By setting the connector groove at the bottom of the integrated bracket, the metal parts are arranged in the connector groove and extend out of the connector groove to achieve grounding with the bottom of the groove-shaped housing. This allows the two second capacitors fixed by the integrated bracket to be directly grounded to the groove-shaped housing of the power supply device when the capacitor filter integrated module is installed during assembly, simplifying the assembly process.

[0071] In this embodiment, arranging the connector slot at the bottom of the integrated bracket allows the metal parts inside the connector slot to also be arranged at the bottom of the integrated bracket. This facilitates the installation of the capacitor filter integrated module onto the slotted housing. The metal parts can be subjected to the squeezing torque of the integrated bracket and the bottom of the slotted housing, allowing the metal parts to better electrically connect the two second capacitors and the bottom of the slotted housing.

[0072] In one embodiment, the metal part is made of an elastic metal material. During the installation of the capacitor filter integrated module into the slotted housing, the metal part can be squeezed to deform so that the two second capacitors are grounded to the slotted housing.

[0073] In one embodiment, another part of the electrical components of the filter assembly includes a magnetic ring, which is arranged adjacent to the integrated bracket along a first direction. The magnetic ring can filter the high-voltage direct current flowing through the second capacitor. The high-voltage direct current from the power battery passes through the filtering magnetic ring, and the magnetic ring can undergo two filtering processes, thereby improving the electromagnetic compatibility of the power supply device and facilitating the transmission of more stable and accurate high-voltage direct current to the bus capacitor in the capacitor cavity.

[0074] In one embodiment, portions of the two first connecting copper busbars extend into the capacitor filter integrated module through the magnetic ring.

[0075] In one embodiment, the housing of the filter assembly for accommodating the magnetic ring includes a fixed protrusion, and the outer wall of the capacitor cavity includes a fixed boss. The fixed boss extends away from the top plate of the capacitor cavity along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing. The fixed protrusion and the fixed boss are arranged opposite to each other along the stacking direction of the capacitor filter integrated module and the bottom of the slot-shaped housing. The fixed protrusion and the fixed boss are fixedly connected by screws, so that the filter assembly can be stably fixed in the receiving slot of the housing of the capacitor filter integrated module.

[0076] Secondly, this application provides a powertrain including a drive motor, a reducer, and a power supply device as described in the first aspect. The power supply device is used to provide three-phase AC power to the drive motor to drive the drive motor, and the drive motor drives the wheels through the reducer.

[0077] The powertrain in this embodiment includes a power supply device. By stacking a three-phase power module and a capacitor filter integrated module, DC mounting holes are distributed on a first sidewall. A pair of first connecting copper busbars are opposite to the first sidewall along a first direction, allowing the pair of first connecting copper busbars to be positioned close to the high-voltage connector for convenient electrical connection and assembly. Three pairs of second connecting copper busbars and the input copper busbar of the three-phase power module are opposite to a second sidewall along a second direction, and the output copper busbar of the three-phase power module is opposite to another second sidewall along a second direction. This allows the capacitor filter integrated module and the three-phase power module to be arranged along the first direction in their length direction. The width direction of the three-phase power module is arranged along the second direction, so that the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars of the three-phase power module are arranged on different sides of the capacitor filter integrated module with the high-voltage connector and one pair of first connecting copper busbars. This ensures that the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars of the three-phase power module will not interfere with the arrangement of the high-voltage connector and one pair of first connecting copper busbars. It also makes the arrangement of the high-voltage connector, one pair of first connecting copper busbars, capacitor filter integrated module, and three-phase power module in the slotted housing more compact, and facilitates the assembly process of the high-voltage connector, capacitor filter integrated module, and three-phase power module in the slotted housing, thereby simplifying the assembly process of the powertrain.

[0078] Thirdly, this application provides an electric vehicle, which includes a frame, a power battery, and a powertrain as described in the second aspect. The frame is used to fix the power battery and the powertrain, and the power battery provides high-voltage direct current to the power supply device of the powertrain.

[0079] The powertrain in this embodiment includes a power supply device. By stacking a three-phase power module and a capacitor filter integrated module, DC mounting holes are distributed on a first sidewall. A pair of first connecting copper busbars are opposite to the first sidewall along a first direction, allowing the pair of first connecting copper busbars to be positioned close to the high-voltage connector for convenient electrical connection and assembly. Three pairs of second connecting copper busbars and the input copper busbar of the three-phase power module are opposite to a second sidewall along a second direction, and the output copper busbar of the three-phase power module is opposite to another second sidewall along a second direction. This allows the capacitor filter integrated module and the three-phase power module to be arranged along the first direction in their length direction. The width direction of the three-phase power module is arranged along the second direction, so that the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars of the three-phase power module are arranged on different sides of the capacitor filter integrated module with the high-voltage connector and one pair of first connecting copper busbars. This ensures that the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars of the three-phase power module will not interfere with the arrangement of the high-voltage connector and one pair of first connecting copper busbars. It also makes the arrangement of the high-voltage connector, one pair of first connecting copper busbars, capacitor filter integrated module, and three-phase power module in the slotted housing more compact, and facilitates the assembly process of the high-voltage connector, capacitor filter integrated module, and three-phase power module in the slotted housing, thereby simplifying the assembly process of the powertrain. Attached Figure Description

[0080] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0081] Figure 1 This is a schematic diagram of an electric vehicle provided in an embodiment of this application;

[0082] Figure 2 This is a schematic diagram of a powertrain provided in an embodiment of this application;

[0083] Figure 3 This is a schematic diagram of a power supply device provided in an embodiment of this application;

[0084] Figure 4 This is another schematic diagram of the power supply device provided in the embodiments of this application;

[0085] Figure 5 This is another schematic diagram of the power supply device provided in the embodiments of this application;

[0086] Figure 6 This is an exploded view of a power supply device provided in an embodiment of this application;

[0087] Figure 7 This is another schematic diagram of the power supply device provided in the embodiments of this application;

[0088] Figure 8 This is a schematic diagram of a capacitor filter integrated module provided in an embodiment of this application;

[0089] Figure 9 This is a schematic diagram of a high-voltage connector provided in an embodiment of this application;

[0090] Figure 10 This is another schematic diagram of the capacitor filter integrated module provided in the embodiments of this application;

[0091] Figure 11 yes Figure 6 A partial enlarged view of section M1 in the power supply unit;

[0092] Figure 12 This is a schematic diagram of a groove-shaped shell provided in an embodiment of this application;

[0093] Figure 13 This is a partial exploded view of the power supply device provided in an embodiment of this application;

[0094] Figure 14 This is another schematic diagram of the capacitor filter integrated module provided in the embodiments of this application;

[0095] Figure 15 This is an exploded view of the capacitor filter integrated module provided in the embodiments of this application;

[0096] Figure 16 This is another exploded view of the capacitor filter integrated module provided in the embodiments of this application;

[0097] Figure 17 This is a schematic diagram of an integrated bracket in the filtering component provided in this application embodiment. Detailed Implementation

[0098] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0099] This application provides a power supply device including a capacitor filter integrated module and a three-phase power module. The power supply device includes a slotted housing for accommodating the capacitor filter integrated module and the three-phase power module, with the three-phase power module stacked on top of the capacitor filter integrated module. The capacitor filter integrated module includes a bus capacitor, a filter assembly, a pair of first connecting copper busbars, and three pairs of second connecting copper busbars. The bus capacitor and filter assembly are used for filtering and stabilizing high-voltage DC power. The pair of first connecting copper busbars electrically connects at least one of the bus capacitor and filter assembly to a high-voltage connector. The three pairs of second connecting copper busbars electrically connect to the input copper busbar of the three-phase power module. The output copper busbar of the three-phase power module is used to connect to a drive motor via a three-phase connector. The channel-shaped housing includes two first sidewalls, two second sidewalls, and a DC mounting hole. The two first sidewalls are arranged opposite each other along a first direction, and the two second sidewalls are arranged opposite each other along a second direction, which is perpendicular to the first direction. The DC mounting hole is distributed on one of the first sidewalls and is used to fix a high-voltage connector. The high-voltage connector is used to electrically connect to the power battery. A pair of first connecting copper busbars are opposite to one of the first sidewalls along the first direction. Three pairs of second connecting copper busbars and the input copper busbar of the three-phase power module are opposite to one of the second sidewalls along the second direction. The output copper busbar of the three-phase power module is opposite to another second sidewall along the second direction.

[0100] By stacking the three-phase power module and the capacitor filter integrated module, the DC mounting holes are distributed on a first sidewall. A pair of first connecting copper busbars are opposite to the first sidewall along a first direction, allowing the pair of first connecting copper busbars to be arranged close to the high-voltage connector, facilitating the electrical connection assembly of the pair of first connecting copper busbars and the high-voltage connector. Meanwhile, the three pairs of second connecting copper busbars and the input copper busbars of the three-phase power module are opposite to a second sidewall along a second direction, facilitating the electrical connection of the three pairs of second connecting copper busbars and the input copper busbars of the three-phase power module. The output copper busbars of the three-phase power module are opposite to another second sidewall along a second direction, thus separating the second connecting copper busbars that transmit DC power from the output copper busbars of the three-phase power module that transmit AC power along the second direction, avoiding assembly interference. By arranging the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars and one pair of first connecting copper busbars of the three-phase power module on different sides of the capacitor filter integrated module, the input copper busbar, output copper busbar, and three pairs of second connecting copper busbars of the three-phase power module will not interfere with the arrangement of the high-voltage connector and one pair of first connecting copper busbars. This also makes the arrangement of the high-voltage connector, one pair of first connecting copper busbars, capacitor filter integrated module, and three-phase power module in the slotted housing more compact, and also facilitates the assembly process of the high-voltage connector, capacitor filter integrated module, and three-phase power module in the slotted housing.

[0101] Figure 1 This is a schematic diagram of an electric vehicle 1 provided in an embodiment of this application. Figure 2 This is a schematic diagram of a powertrain 30 provided in an embodiment of this application.

[0102] In one embodiment, the electric vehicle 1 includes a frame 10, a power battery 20, and a powertrain 30, such as... Figure 1 As shown, the frame 10 is used to fix the power battery 20 and the powertrain 30. In this embodiment, the electric vehicle 1 refers to a wheeled device driven or towed by a power unit. In this embodiment, the powertrain 30 is used to receive power from the power battery 20 and to drive the wheels 40.

[0103] In one embodiment, such as Figure 1 and Figure 2 As shown, the powertrain 30 includes a power supply unit 31, a drive motor 32, and a reducer 33. In this embodiment, the power supply unit 31 receives high-voltage direct current from the power battery 20 and converts it into three-phase alternating current, which is then supplied to the drive motor 32 to drive the drive motor 32 to rotate. The drive motor 32 drives the wheels 40 through the reducer 33.

[0104] In this embodiment, the drive motor 32 includes a motor shaft (not shown), a motor stator (not shown), and a motor rotor (not shown). The reducer 33 includes a gear assembly (not shown), an input shaft (not shown), and an output shaft (not shown). The motor rotor in the drive motor 32 is fixedly sleeved on the motor shaft. After receiving AC power, the motor stator drives the motor rotor to rotate, thereby driving the motor shaft to rotate. The motor shaft of the drive motor 32 is used for transmission connection with the input shaft of the reducer 33. The input shaft receives the power transmitted from the motor shaft of the drive motor 32 and transmits the power to the output shaft through the gear assembly, driving the wheels 40 of the electric vehicle 1 to move.

[0105] In one embodiment, the power supply device 31 is used to charge and discharge the power battery 20 and to drive the drive motor 32. Specifically, the power supply device 31 receives high-voltage direct current (DC) from the power battery 20 and converts it into high-voltage alternating current (AC) to drive the drive motor 32, causing it to rotate. In another embodiment, the power supply device 31 receives AC power and converts it into DC power to charge the power battery 20. The AC power includes mains power or household AC power. In yet another embodiment, the power supply device 31 receives high-voltage DC power and provides it to the power battery 20 to charge it.

[0106] Figure 3 This is a schematic diagram of a power supply device 31 provided in an embodiment of this application. Figure 4 This is another schematic diagram of the power supply device 31 provided in the embodiments of this application. Figure 5 This is another schematic diagram of the power supply device 31 provided in the embodiments of this application.

[0107] In one embodiment, the power supply device 31 includes at least one of a motor controller 31a, an on-board charger 31b, a vehicle controller 31c, and a DC-DC converter 31d. Figures 3 to 5 As shown, in one embodiment, the power supply device 31 includes a motor controller 31a, an on-board charger 31b, a vehicle controller 31c, and a DC-DC converter 31d.

[0108] The full name of the motor controller 31a is Motor Control Unit, abbreviated as MCU. In one embodiment, the motor controller 31a is used to receive the high-voltage DC power from the power battery 20 and convert it into high-voltage AC power, which is then transmitted to the three-phase windings (not shown) of the drive motor 32, causing the motor rotor and motor shaft of the drive motor 32 to rotate.

[0109] The on-board charger 31b is abbreviated as OBC. In one embodiment, the on-board charger 31b is used to transfer current from an external power source to charge the power battery 20 or to supply power to the vehicle's load. The external power source can be an AC power grid, an AC charging station, or a DC charging station. In one embodiment, the on-board charger 31b includes a power conversion circuit, which converts the external power source and outputs high-voltage DC power to charge the power battery 20. The power conversion circuit includes multiple power switching transistors.

[0110] The vehicle controller 31c is called the Vehicle Control Unit (VCU). In one embodiment, the vehicle controller 31c is responsible for the normal driving of the vehicle, brake energy feedback, energy pipelines and network pipelines of the vehicle drive system and power battery 20, fault diagnosis and handling, and vehicle status monitoring.

[0111] The DC-to-DC converter 31d is also known as a DC-CDC converter. In one embodiment, the DC-to-DC converter 31d is used to convert a high-voltage DC power supply into a DC (or near-DC) power supply of a different voltage.

[0112] In one embodiment, such as Figure 3 and Figure 4As shown, the power supply device 31 includes a slotted housing 400, a circuit board 500, and a cover plate 600. The slotted housing 400 and the cover plate 600 enclose a receiving space for accommodating the circuit board 500 and the electrical components of the motor controller 31a, the on-board charger 31b, and the DC-DC converter 31d mounted on the circuit board 500. In this embodiment, the slotted housing 400 of the power supply device 31 is integrally die-cast, improving the structural stability of the power supply device 31. The slotted housing 400 accommodates the electrical components of the motor controller 31a and the on-board charger 31b, and also provides support for the electrical components of the motor controller 31a and the on-board charger 31b.

[0113] In one embodiment, the slotted housing 400 is integrally formed with the housing of the drive motor 32 and the housing of the reducer 33, and the slotted housing 400 is part of the overall housing of the powertrain 30.

[0114] In one embodiment, such as Figure 5 As shown, the motor controller 31a includes a capacitor filter integrated module 100 and a three-phase power module 200. The capacitor filter integrated module 100 is used to filter out harmonic interference, common-mode interference, differential-mode interference, and stabilize the current and voltage in the high-voltage direct current, improving the electromagnetic compatibility of the power supply device 31. The three-phase power module 200 receives the high-voltage direct current output from the capacitor filter integrated module 100 and converts it into three-phase alternating current. The three-phase power module 200 then transmits the three-phase alternating current to the drive motor 32, driving the drive motor 32 to operate.

[0115] In one embodiment, such as Figure 5 As shown, the capacitor filter integrated module 100 includes a pair of first connecting copper busbars 110 and three pairs of second connecting copper busbars 120. The pair of first connecting copper busbars 110 includes two first connecting copper busbars 110. The pair of first connecting copper busbars 110 is used to connect to the power battery 20, and the three pairs of second connecting copper busbars 120 are used to connect to the three-phase power module 200. The capacitor filter integrated module 100 is electrically connected to the positive and negative terminals of the power battery 20 through the two first connecting copper busbars 110 respectively, receives the high-voltage DC power from the power battery 20, and transmits the high-voltage DC power from the second connecting copper busbars 120 to the three-phase power module 200. The three-phase power module 200 converts the high-voltage DC power into three-phase AC power and transmits the high-voltage AC power to the three-phase windings of the drive motor 32 through the three-phase connector 300, driving the drive motor 32 to rotate. The power battery 20 is electrically connected to the capacitor filter integrated module 100 of the power supply device 31 through a pair of first connecting copper busbars 110, which eliminates the need for excessive external cables, simplifies the wiring layout, and improves the integration of the power supply device 31.

[0116] Figure 6This is an exploded view of the power supply device 31 provided in an embodiment of this application. Figure 7 This is another schematic diagram of the power supply device 31 provided in the embodiments of this application. Figure 8 This is a schematic diagram of a capacitor filter integrated module 100 provided in an embodiment of this application. Figure 9 This is a schematic diagram of a high-voltage connector 700 provided in an embodiment of this application.

[0117] In one embodiment, such as Figure 5 and Figure 6 As shown, the power supply device 31 includes a circuit board 500, a three-phase power module 200, and a capacitor filter integrated module 100. The circuit board 500 is used to carry the electrical components of the on-board charger 31b. The power supply device 31 includes a slotted housing 400, which is used to house the circuit board 500, the three-phase power module 200, and the capacitor filter integrated module 100. Figure 6 and Figure 7 As shown, the circuit board 500, the three-phase power module 200, and the capacitor filter integrated module 100 are stacked along the slot 410 of the slot-shaped housing 400 towards direction Z. Among them, as... Figure 8 As shown, the capacitor filter integrated module 100 includes a bus capacitor 130 and a filter component 140. The bus capacitor 130 and the filter component 140 are used to filter and regulate the high-voltage DC power. A portion 111 of two first connecting copper busbars 110 extends into the capacitor filter integrated module 100. The two first connecting copper busbars 110 are arranged adjacent to each other, as shown. Figure 6 , Figure 8 and Figure 9 As shown, the groove wall of the groove housing 400 is used to fix the high voltage connector 700. The high voltage connector 700 is exposed outside the battery connector 710 of the groove housing 400 for connecting the power battery 20. The two overlapping copper busbars 720 of the high voltage connector 700 extend into the groove housing 400 for electrically connecting the two first connecting copper busbars 110 exposed to the other part 112 of the capacitor filter integrated module 100. The two first connecting copper busbars 110 and the two overlapping copper busbars 720 are arranged in the same direction.

[0118] In this embodiment, the power supply device 31 includes a slotted housing 400, which is used to accommodate the circuit board 500, the three-phase power module 200 and the capacitor filter integrated module 100. The slotted housing 400 provides support for the circuit board 500, the three-phase power module 200 and the capacitor filter integrated module 100, which helps to improve the reliability of the power supply device 31.

[0119] In this embodiment, the groove wall of the groove housing 400 is used to fix the high voltage connector 700. The high voltage connector 700 is exposed outside the battery connector 710 of the groove housing 400 for connecting the power battery 20. It also facilitates the installation of the high voltage connector 700 through the groove wall of the groove housing 400, and allows the high voltage DC power output from the power battery 20 to be input into the groove housing 400 from the battery connector 710.

[0120] In this embodiment, a portion 111 of the two first connecting copper busbars 110 extends into the capacitor filter integrated module 100. The two overlapping copper busbars 720 of the high-voltage connector 700 extend into the slotted housing 400 for electrical connection. The other portion 112 of the two first connecting copper busbars 110 is exposed, which facilitates the electrical connection and assembly of the two overlapping copper busbars 720 with the capacitor filter integrated module 100 through the two first connecting copper busbars 110. It also allows the high-voltage DC power input from the two overlapping copper busbars 720 of the high-voltage connector 700 to flow from the other portion 112 of the two first connecting copper busbars 110 into a portion 111 of the two first connecting copper busbars 110 and into the capacitor filter integrated module 100. The bus capacitor 130 and the filter component 140 in the capacitor filter integrated module 100 filter and stabilize the voltage, and then transmit it to the three-phase power module 200 for current conversion.

[0121] In this embodiment, the two first connecting copper busbars 110 are arranged adjacent to each other, and the two first connecting copper busbars 110 and the two overlapping copper busbars 720 are arranged in the same direction, so that the two first connecting copper busbars 110 and the two overlapping copper busbars 720 can be laid flat, which facilitates the installation and fixation of the high-voltage connector 700, the two first connecting copper busbars 110 and the capacitor filter integrated module 100 in the slot-shaped housing 400. It also ensures that the arrangement of the two first connecting copper busbars 110 and the two overlapping copper busbars 720 does not occupy too much space of the power supply device 31 along the slot 410 of the slot-shaped housing 400 in the Z direction.

[0122] In this embodiment, the three-phase power module 200 and the capacitor filter integrated module 100 are stacked, and the bus capacitor 130 and the filter component 140 are integrated into one unit. This allows the capacitor filter integrated module 100 to be assembled as a separate component, simplifying the installation process of the capacitor filter integrated module 100 into the slotted housing 400. Furthermore, the high-voltage DC power from the power battery 20 is received by the battery connector 710 exposed outside the slotted housing 400 through the high-voltage connector 700 and transmitted to two overlapping copper busbars 720, and then transmitted to a pair of first connecting copper busbars 110 extending into the capacitor filter integrated module 100 to transmit the high-voltage DC power to the capacitor filter integrated module 100. Setting the two first connecting copper busbars 110 and the two overlapping copper busbars 720 in the same direction allows the two first connecting copper busbars 110 and the two overlapping copper busbars 720 to be laid flat, making it easier to assemble the two first connecting copper busbars 110 and the two overlapping copper busbars 720 from the slot 410 of the slot-shaped housing 400 into the slot-shaped housing 400.

[0123] in, Figure 5 and Figure 6 The high-voltage connector 700 is for illustrative purposes only and does not represent the actual structure. For the specific structure of the high-voltage connector 700, please refer to [link / reference needed]. Figure 9 .

[0124] In one embodiment, the electrical components of the on-board charger 31b include multiple capacitors, multiple inductors, and multiple power switching transistors.

[0125] Figure 10 This is another schematic diagram of the capacitor filter integrated module 100 provided in the embodiments of this application.

[0126] In one embodiment, such as Figure 10 As shown, the capacitor filter integrated module 100 includes a bus capacitor 130, a filter component 140, a pair of first connecting copper busbars 110, and three pairs of second connecting copper busbars 120. The bus capacitor 130 and the filter component 140 are used for filtering and regulating high-voltage DC power, such as... Figure 5 and Figure 10 As shown, a pair of first connecting copper busbars 110 are used to electrically connect at least one of the bus capacitor 130 and the filter assembly 140 and the high voltage connector 700; three pairs of second connecting copper busbars 120 are used to electrically connect the input copper busbar 210 of the three-phase power module 200; and the output copper busbar 220 of the three-phase power module 200 is used to connect the drive motor 32 through the three-phase connector 300.

[0127] In this embodiment, the bus capacitor 130, the filter component 140, a pair of first connecting copper busbars 110 and three pairs of second connecting copper busbars 120 are integrated into a capacitor filter integrated module 100, which makes the power supply device 31 more integrated and fused. The capacitor filter integrated module 100 can also be assembled first and then installed into the slotted housing 400, which simplifies the assembly process of the power supply device 31.

[0128] In this embodiment, the high-voltage connector 700 transmits the high-voltage DC power from the power battery 20 to at least one of the bus capacitor 130 and the filter component 140 through a pair of first connecting copper busbars 110. The high-voltage DC power is then filtered and stabilized by the bus capacitor 130 and the filter component 140. The filtered and stabilized high-voltage DC power is then transmitted to the input copper busbar 210 of the three-phase power module 200 through three pairs of second connecting copper busbars 120. The three-phase power module 200 converts the high-voltage DC power into three-phase AC power. The three-phase AC power of the three-phase power module 200 is then output from the output copper busbar 220 and transmitted to the drive motor 32 through the three-phase connector 300, causing the motor rotor of the drive motor 32 to rotate.

[0129] Figure 11 yes Figure 6 A partial enlarged view of section M1 in the power supply device 31.

[0130] In one embodiment, such as Figure 6 , Figure 7 and Figure 11 As shown, the groove-shaped housing 400 includes two first sidewalls 420, two second sidewalls 430, and a DC mounting hole 440. The two first sidewalls 420 are arranged opposite each other along a first direction Y, and the two second sidewalls 430 are arranged opposite each other along a second direction X. The DC mounting hole 440 is distributed on one of the first sidewalls 420a. The DC mounting hole 440 is used to fix the high-voltage connector 700. The high-voltage connector 700 is used to electrically connect the power battery 20. A pair of first connecting copper busbars 110 are opposite to one of the first sidewalls 420a along the first direction Y. Three pairs of second connecting copper busbars 120 and the input copper busbar 210 of the three-phase power module 200 are opposite to one of the second sidewalls 430a along the second direction X. The output copper busbar 220 of the three-phase power module 200 is opposite to another second sidewall 430b along the second direction X.

[0131] In this embodiment, DC mounting holes 440 are distributed on a first sidewall 420a. The DC mounting holes 440 are used to fix a high-voltage connector 700, which is used to electrically connect to the power battery 20. A pair of first connecting copper busbars 110 are opposite to the first sidewall 420a along a first direction Y, facilitating the installation of the two first connecting copper busbars 110 into the slotted housing 400 after being fixed to the capacitor filter integrated module 100, and electrically connected to the high-voltage connector 700 fixed in the DC mounting holes 440. This also allows the pair of first connecting copper busbars 110 to be closer to the high-voltage connector 700 fixed to the first sidewall 420a, facilitating the input of high-voltage DC power from the high-voltage connector 700 into the capacitor filter integrated module 100 through the pair of first connecting copper busbars 110.

[0132] In this embodiment, the three pairs of second connecting copper busbars 120 and the input copper busbars 210 of the three-phase power module 200 are opposite to a second sidewall 430a along the second direction X. Arranging the three pairs of second connecting copper busbars 120 and the input copper busbars 210 of the three-phase power module 200 close to the second sidewall 430a makes the distance between the three pairs of second connecting copper busbars 120 and the input copper busbars 210 of the three-phase power module 200 closer, thus facilitating the stacking arrangement of the three pairs of second connecting copper busbars 120 and the input copper busbars 210 of the three-phase power module 200. Stacking the three-phase power module 200 on the capacitor filter integrated module 100 helps to ensure that the arrangement of the three-phase power module 200 does not occupy additional space of the capacitor filter integrated module 100 along the second direction X, which is beneficial to the miniaturization of the power supply device 31. The three pairs of second connecting copper busbars 120 and the input copper busbars 210 of the three-phase power module 200 are stacked together, which also eliminates the need for additional adapters for the electrical connection between the three pairs of second connecting copper busbars 120 and the input copper busbars 210 of the three-phase power module 200. This helps to reduce the use of parts, simplify the assembly process, and improve the integration and cohesion of the power supply device 31.

[0133] In this embodiment, the output copper busbar 220 of the three-phase power module 200 is opposite to another second sidewall 430b along the second direction X, so that the input copper busbar 210 and the output copper busbar 220 of the three-phase power module 200 can be arranged opposite each other along the second direction X. This ensures that the output copper busbar 220 of the three-phase power module 200 transmitting three-phase AC power and the three pairs of second connecting copper busbars 120 transmitting DC power will not interfere with each other. It also facilitates the electrical connection and assembly of the output copper busbar 220 with the three-phase connector 300 arranged in the middle of the slotted housing 400 for receiving the three-phase AC power output from the three-phase power module 200. Arranging the three-phase connector 300 in the middle of the slotted housing 400 does not require additional space for the power supply device 31 along the second direction X.

[0134] In this embodiment, the three-phase power module 200 and the capacitor filter integrated module 100 are stacked, with DC mounting holes 440 distributed on a first sidewall 420a. A pair of first connecting copper busbars 110 are opposite to the first sidewall 420a along the first direction Y, allowing the pair of first connecting copper busbars 110 to be arranged close to the high-voltage connector 700 for convenient electrical connection and assembly. Meanwhile, three pairs of second connecting copper busbars 120 and the input copper busbar 210 of the three-phase power module 200 are opposite to a second sidewall 430a along the second direction X, and the output copper busbar 220 of the three-phase power module 200 is opposite to another second sidewall 430b along the second direction X. This allows the capacitor filter integrated module 100 and the three-phase power module 200 to be arranged along the first direction Y in their length direction. The width direction of the three-phase power module 200 is arranged along the second direction X, so that the input copper busbar 210, output copper busbar 220 and three pairs of second connecting copper busbars 120 of the three-phase power module 200 are arranged on different sides of the capacitor filter integrated module 100 with the high-voltage connector 700 and a pair of first connecting copper busbars 110. This ensures that the input copper busbar 210, output copper busbar 220 and three pairs of second connecting copper busbars 120 of the three-phase power module 200 will not interfere with the arrangement of the high-voltage connector 700 and a pair of first connecting copper busbars 110. It also makes the arrangement of the high-voltage connector 700, a pair of first connecting copper busbars 110, capacitor filter integrated module 100 and three-phase power module 200 in the slotted housing 400 more compact, and also facilitates the assembly process of the high-voltage connector 700, capacitor filter integrated module 100 and three-phase power module 200 in the slotted housing 400.

[0135] Figure 12 This is a schematic diagram of a groove-shaped housing 400 provided in an embodiment of this application.

[0136] In one embodiment, such as Figure 12 As shown, the grooved housing 400 also includes three-phase line mounting holes 450, which are distributed on another first sidewall 420b. The three-phase line mounting holes 450 are used to fix the three-phase connector 300.

[0137] In the embodiments of this application, such as Figure 6 and Figure 12 As shown, the three-phase mounting holes 450 are distributed on another first sidewall 420b, and the DC mounting holes 440 are distributed on one first sidewall 420a, so that the three-phase mounting holes 450 and the DC mounting holes 440 are arranged opposite to each other along the first direction Y, so that the three-phase connector 300 fixed to the three-phase mounting holes 450 will not interfere with the high-voltage connector 700 fixed to the DC mounting holes 440.

[0138] In this embodiment, the three-phase mounting holes 450 are distributed on another first sidewall 420b, and the DC mounting holes 440 are distributed on one first sidewall 420a. This allows the high-voltage DC power input to the power supply device 31 from the high-voltage connector 700 fixed to the DC mounting holes 440 to be converted into three-phase AC power by the three-phase power module 200, and then output to the drive motor 32 more smoothly via a short path from the three-phase connector 300 fixed to the three-phase mounting holes 450. It also facilitates the electrical connection and installation of the output copper busbar 220 of the three-phase power module 200 and the three-phase connector 300.

[0139] In this embodiment, the three-phase mounting holes 450 and the DC mounting holes 440 are arranged opposite each other along the first direction Y, which can make the current flow in the power supply device 31 more reasonable and the circuit layout more orderly.

[0140] In one embodiment, such as Figure 12 As shown, the distance between the three-phase line mounting hole 450 and a second sidewall 430a along the second direction X is greater than the distance between the DC mounting hole 440 and a second sidewall 430a.

[0141] In the embodiments of this application, such as Figure 5 and Figure 12 As shown, the distance between the three-phase line mounting hole 450 and a second sidewall 430a along the second direction X is denoted as L1, and the distance between the DC mounting hole 440 and a second sidewall 430a is denoted as L2. Since the input copper busbar 210 and output copper busbar 220 of the three-phase power module 200 are arranged along the second direction X, setting L1 > L2 allows the three-phase line mounting hole 450 and the DC mounting hole 440 to be staggered along the second direction X. This facilitates the arrangement of the three-phase connector 300 fixed to the three-phase line mounting hole 450 away from one of the second sidewalls 430a along the second direction X, thus making it easier to electrically connect and assemble the output copper busbar 220 of the three-phase power module 200, which is arranged opposite to the other second sidewall 430b, with the three-phase connector 300. Furthermore, the closer distance between the output copper busbar 220 and the three-phase connector 300 also allows the output copper busbar 220 to transmit three-phase AC power to the three-phase connector 300 via a shorter path and faster, reducing power loss.

[0142] In one embodiment, such as Figure 12 As shown, the bottom 460 of the groove-shaped housing 400 includes shielding protrusions 461, which are arranged between the two first sidewalls 420 along the first direction Y. Figure 5 and Figure 12As shown, the space between the shielding protrusion 461 and another first sidewall 420b is used to accommodate the capacitor filter integrated module 100, the space between the shielding protrusion 461 and the first sidewall 420a is used to accommodate the filter magnetic ring 462, the high voltage connector 700 passes through the filter magnetic ring 462, and the shielding protrusion 461 includes a clearance notch 4610 for passing through a pair of first connecting copper busbars 110.

[0143] In this embodiment, shielding protrusions 461 are arranged between two first sidewalls 420 along the first direction Y. The space between the shielding protrusions 461 and the other first sidewall 420b is used to accommodate the capacitor filter integrated module 100, and the space between the shielding protrusions 461 and the first sidewall 420a is used to accommodate the filter magnetic ring 462. The high-voltage connector 700 passes through the filter magnetic ring 462. The shielding protrusions 461 can isolate electrical interference between the capacitor filter integrated module 100, the filter magnetic ring 462, and the high-voltage connector 700, so that the capacitor filter integrated module 100, the filter magnetic ring 462, and the high-voltage connector 700 can work normally relatively independently, which is beneficial to ensuring the normal operation of the power supply device 31.

[0144] In the embodiments of this application, such as Figure 5 and Figure 12 As shown, the shielding protrusion 461 includes a clearance notch 4610, which is used to pass through a pair of first connecting copper busbars 110. This facilitates the installation and arrangement of the pair of first connecting copper busbars 110 that are electrically connected to the high-voltage connector 700. This eliminates the need for the pair of first connecting copper busbars 110 to extend into the capacitor filter integrated module 100 from above the shielding protrusion 461, and prevents the pair of first connecting copper busbars 110 from occupying additional space in the height direction of the shielding protrusion 461, which is beneficial for the miniaturization of the power supply device 31.

[0145] In one embodiment, such as Figure 5 As shown, the spacing between a pair of first connecting copper busbars 110 and the output copper busbars 220 of the three-phase power module 200 along the second direction X is smaller than the spacing between a pair of first connecting copper busbars 110 and three pairs of second connecting copper busbars 120. Wherein, as Figure 12 As shown, the distance between the clearance notch 4610 along the second direction X and a second sidewall 430a is greater than half the length of the shielding protrusion 461 along the second direction X.

[0146] In this embodiment, the distance between a pair of first connecting copper busbars 110 and the output copper busbars 220 of the three-phase power module 200 along the second direction X is denoted as L3, and the distance between a pair of first connecting copper busbars 110 and three pairs of second connecting copper busbars 120 is denoted as L4. A pair of first connecting copper busbars 110 and a first sidewall 420a are opposite each other along the first direction Y. L3 < L4, so that the pair of first connecting copper busbars 110 are set away from the three pairs of second connecting copper busbars 120 along the second direction X. This allows space to be reserved between the pair of first connecting copper busbars 110 and the three pairs of second connecting copper busbars 120 along the second direction X to accommodate the filter magnetic ring 462 and the high-voltage connector 700. This facilitates the assembly of the filter magnetic ring 462 and the high-voltage connector 700 after the capacitor filter integrated module 100 is assembled into the slotted housing 400.

[0147] In the embodiments of this application, such as Figure 5 and Figure 12 As shown, since a pair of first connecting copper busbars 110 in the capacitor filter integrated module 100 are far from three pairs of second connecting copper busbars 120, the end of the clearance notch 4610 needs to be arranged away from a second sidewall 430a. The distance between the clearance notch 4610 and the second sidewall 430a along the second direction X is greater than half the length of the shielding protrusion 461 along the second direction X. This allows the pair of first connecting copper busbars 110 in the capacitor filter integrated module 100 to pass through the clearance notch 4610. In addition to ensuring that the shielding protrusion 461 can isolate the electrical interference between the capacitor filter integrated module 100 and the filter magnetic ring 462, it also facilitates the installation and fixing of the capacitor filter integrated module 100 with a pair of first connecting copper busbars 110.

[0148] In one embodiment, such as Figure 12 As shown, the distance between the DC mounting hole 440 along the second direction X and a second sidewall 430a is less than the distance between the clearance notch 4610 and a second sidewall 430a, as... Figure 6 and Figure 11 As shown, the space between the shielding protrusion 461 and a first sidewall 420a is also used to accommodate a pair of transition copper busbars 810, which are used to connect the high-voltage connector 700 and a pair of first connection copper busbars 110.

[0149] In this embodiment, the distance between the DC mounting hole 440 and a second sidewall 430a along the second direction X is L2, and the distance between the clearance notch 4610 and a second sidewall 430a is L5. A pair of first connecting copper busbars 110 need to pass through the clearance notch 4610. By setting L2 < L5, the clearance notch 4610 is arranged away from the DC mounting hole 440 along the second direction X, thereby keeping the clearance notch 4610 away from the high-voltage connector 700. This allows sufficient space to be reserved between the shielding protrusion 461 and a first sidewall 420a and a second sidewall 430a to accommodate a pair of transition copper busbars 810. The pair of transition copper busbars 810 includes two transition copper busbars 810.

[0150] In this embodiment, the DC mounting hole 440 is used to fix the high-voltage connector 700, and the clearance notch 4610 is used to pass through a pair of first connecting copper busbars 110. L2 < L5, so that the DC mounting hole 440 and the clearance notch 4610 are misaligned along the second direction X. By using a pair of adapter copper busbars 810 to connect the high-voltage connector 700 and the pair of first connecting copper busbars 110, the pair of first connecting copper busbars 110 can be made shorter, which facilitates the integration of the pair of first connecting copper busbars 110 into the capacitor filter integrated module 100. In addition, by using a pair of adapter copper busbars 810 to connect the high-voltage connector 700 and the pair of first connecting copper busbars 110, the installation arrangement of the high-voltage connector 700 and the pair of first connecting copper busbars 110 can be made more flexible.

[0151] In one embodiment, such as Figure 6 , Figure 9 and Figure 11 As shown, two first connecting copper busbars 110 are connected to two overlapping copper busbars 720 respectively through two transition copper busbars 810. Along the slot 410 of the groove-shaped housing 400, facing the direction Z, each transition copper busbar 810 is stacked on one first connecting copper busbar 110 and one overlapping copper busbar 720.

[0152] In this embodiment, the two first connecting copper busbars 110 are respectively connected to the two overlapping copper busbars 720 through the two adapter copper busbars 810, so that the high voltage DC power output by the power battery 20 through the two overlapping copper busbars 720 of the high voltage connector 700 can be transmitted to the two first connecting copper busbars 110 through the two adapter copper busbars 810, and then transmitted to the capacitor filter integrated module 100.

[0153] In this embodiment, along the Z-direction of the slot opening 410 of the groove-shaped housing 400, each transition copper busbar 810 is stacked on a first connecting copper busbar 110 and a lap copper busbar 720. This facilitates direct electrical connection between the lap copper busbar 720 and the first connecting copper busbar 110 via the transition copper busbar 810. The stacked arrangement also facilitates the assembly of the transition copper busbar 810, the lap copper busbar 720 and the first connecting copper busbar 110, simplifying the assembly process. It also helps to reduce the space occupied by the transition copper busbar 810, the lap copper busbar 720 and the first connecting copper busbar 110 within the groove-shaped housing 400 when laid flat.

[0154] Figure 13 This is a partial exploded view of the power supply device 31 provided in an embodiment of this application. Figure 13 One overlapping copper busbar 720a and the other overlapping copper busbar 720b are for illustrative purposes only; please refer to the specific structure. Figure 9 .

[0155] In one embodiment, such as Figure 6 , Figure 9 , Figure 11 and Figure 13 As shown, along the Z-direction of the slot opening 410 of the slot-shaped housing 400, one overlapping copper busbar 720a is used to overlap a transition copper busbar 810a on the side away from the bottom 460 of the slot-shaped housing 400, and another overlapping copper busbar 720b is used to overlap another transition copper busbar 810b on the side away from the bottom 460 of the slot-shaped housing 400.

[0156] In this embodiment, along the Z-direction of the slot opening 410 of the slot-shaped housing 400, one overlapping copper busbar 720a is stacked on the side of one transition copper busbar 810a facing away from the bottom 460 of the slot-shaped housing 400, and another overlapping copper busbar 720b is stacked on the side of another transition copper busbar 810b facing away from the bottom 460 of the slot-shaped housing 400. This arrangement of the two overlapping copper busbars 720a and the two transition copper busbars 810 above the slot opening 410 of the slot-shaped housing 400 in the Z-direction direction allows one overlapping copper busbar 720a and the other overlapping copper busbar 720b to exert a downward force on one transition copper busbar 810a and the other transition copper busbar 810b, which is more conducive to firmly fixing one transition copper busbar 810a and the other transition copper busbar 810b inside the slot-shaped housing 400. In addition, it is also convenient to install the two adapter copper busbars 810 into the slotted housing 400 and then install the two overlapping copper busbars 720 of the high voltage connector 700 and the two adapter copper busbars 810 in a stacked and fixed manner, which facilitates installation.

[0157] In one embodiment, one copper busbar 720a is electrically connected to the negative terminal of the power battery 20, and the other copper busbar 720b is electrically connected to the positive terminal of the power battery 20.

[0158] In one embodiment, such as Figure 6 , Figure 9 , Figure 11 and Figure 13 As shown, along the slot opening 410 of the slot-shaped housing 400 facing direction Z, a first connecting copper busbar 110a is used to stack on the side of a transition copper busbar 810a away from the bottom 460 of the slot-shaped housing 400, and another first connecting copper busbar 110b is used to stack on the side of another transition copper busbar 810b away from the bottom 460 of the slot-shaped housing 400.

[0159] In this embodiment, along the Z-direction of the slot opening 410 of the slot-shaped housing 400, a first connecting copper busbar 110a is stacked on the side of a transition copper busbar 810a facing away from the bottom 460 of the slot-shaped housing 400, and another first connecting copper busbar 110b is stacked on the side of another transition copper busbar 810b facing away from the bottom 460 of the slot-shaped housing 400, so that the two first connecting copper busbars 110 are arranged above the two transition copper busbars 810 along the Z-direction of the slot opening 410 of the slot-shaped housing 400, which facilitates the installation and fixing of the two first connecting copper busbars 110 on the two transition copper busbars 810 from above the Z-direction of the slot opening 410 of the slot-shaped housing 400 or for maintenance and replacement.

[0160] In one embodiment, a first connecting copper busbar 110a is electrically connected to the negative terminal of the power battery 20, and another first connecting copper busbar 110b is electrically connected to the positive terminal of the power battery 20.

[0161] In one embodiment, such as Figure 6 As shown, the power supply device 31 also includes multiple electrical components of the on-board charger 31b. The multiple electrical components of the on-board charger 31b, the capacitor filter integrated module 100, and a second sidewall 430a are arranged along the second direction X. A pair of adapter copper busbars 810 are also used to electrically connect the multiple electrical components of the on-board charger 31b.

[0162] In this embodiment, multiple electrical components of the on-board charger 31b, the capacitor filter integrated module 100, and a second sidewall 430a are arranged along the second direction X, so that the multiple electrical components of the on-board charger 31b and the capacitor filter integrated module 100 in the power supply device 31 can be laid flat in the slotted housing 400 along the second direction X. This is beneficial for reducing the space in the height direction of the power supply device 31 and also facilitates the assembly of the on-board charger 31b and the capacitor filter integrated module 100 into the slotted housing 400 from the direction of the slot opening 410 of the slotted housing 400.

[0163] In this embodiment, a pair of adapter copper busbars 810 are also used to electrically connect multiple electrical components of the on-board charger 31b, so that the high-voltage DC power input from the high-voltage connector 700 received by the pair of adapter copper busbars 810 can supply not only the capacitor filter integrated module 100 but also the on-board charger 31b. Furthermore, the high-voltage DC power flowing into the capacitor filter integrated module 100 and the high-voltage DC power flowing into the on-board charger 31b can share a single filter magnetic ring 462 for filtering, thereby improving the integration of the power supply device 31 and reducing the number of components used in the power supply device 31, thus reducing costs. The reduction in the number of components can also simplify the assembly process of the power supply device 31.

[0164] In one embodiment, such as Figure 6 , Figure 9 and Figure 11 As shown, at least one electrical component of the on-board charger 31b is connected to two transition copper busbars 810 via two third connecting copper busbars 820. The arrangement direction of at least one electrical component of the on-board charger 31b and the capacitor filter integrated module 100 is the same as the arrangement direction of the two first connecting copper busbars 110, and the arrangement direction of the two third connecting copper busbars 820 is the same as the arrangement direction of the two overlapping copper busbars 720.

[0165] In this embodiment, at least one electrical component of the on-board charger 31b is connected to two adapter copper busbars 810 via two third connecting copper busbars 820. This allows the high-voltage DC power received by the two adapter copper busbars 810 from the two connecting copper busbars 720 to be transmitted to the electrical components of the on-board charger 31b via the two third connecting copper busbars 820. This enables the high-voltage DC power from the power battery 20 to be shunt within the power supply device 31 via the two adapter copper busbars 810, which helps reduce the number of adapters used, lowers costs, and simplifies the assembly process.

[0166] In this embodiment, the arrangement direction of at least one electrical component of the on-board charger 31b and the capacitor filter integrated module 100 is the same as the arrangement direction of the two first connecting copper busbars 110, so that at least one electrical component of the on-board charger 31b and the capacitor filter integrated module 100 can be laid flat, which facilitates the assembly of at least one electrical component of the on-board charger 31b and the capacitor filter integrated module 100 into the slot housing 400 from the slot opening 410 direction of the slot housing 400, and also allows the on-board charger 31b and the capacitor filter integrated module 100 to share a circuit board 500, which is beneficial to improving the integration of the power supply device 31.

[0167] In this embodiment, the arrangement direction of the two third connecting copper busbars 820 is the same as that of the two overlapping copper busbars 720, so that the two third connecting copper busbars 820 and the two overlapping copper busbars 720 can be laid flat in the groove-shaped housing 400. This facilitates the connection of the two overlapping copper busbars 720 to the two third connecting copper busbars 820 through the two adapter copper busbars 810. It also helps the two third connecting copper busbars 820 to receive the high-voltage DC power transmitted from the two overlapping copper busbars 720 with the shortest path, thereby reducing power loss.

[0168] In one embodiment, such as Figure 6 and Figure 11 As shown, a third connecting copper busbar 820a is stacked between a first connecting copper busbar 110a and a circuit board 500 along the slot opening 410 of the slot-shaped housing 400 in the direction Z. The circuit board 500 includes a clearance hole 510, which penetrates the circuit board 500 along the slot opening 410 of the slot-shaped housing 400 in the direction Z. The portion of the stacked first connecting copper busbar 110a, third connecting copper busbar 820a, and transition copper busbar 810a along the slot opening 410 of the slot-shaped housing 400 in the direction Z is exposed in the clearance hole 510.

[0169] In this embodiment of the application, a third connecting copper busbar 820a is stacked between a first connecting copper busbar 110a and a circuit board 500 along the slot 410 of the slot-shaped housing 400 in the direction Z. The arrangement of the third connecting copper busbar 820a makes full use of the space between the first connecting copper busbar 110a and the circuit board 500 along the slot 410 of the slot-shaped housing 400 in the direction Z.

[0170] In this embodiment, the circuit board 500 includes a recessed hole 510. The recessed hole 510 extends through the circuit board 500 along the slot opening 410 of the slot-shaped housing 400 in the direction Z. A portion of a first connecting copper busbar 110a, a third connecting copper busbar 820a, and a transition copper busbar 810a stacked together along the slot opening 410 of the slot-shaped housing 400 in the direction Z is exposed in the recessed hole 510. This allows the first connecting copper busbar 110a, the third connecting copper busbar 820a, and the transition copper busbar 810a to be fixed or replaced with a screw along the slot opening 410 of the slot-shaped housing 400 in the direction Z from the position of the recessed hole 510, simplifying the assembly and maintenance process.

[0171] In one embodiment, such as Figure 4 , Figure 11 and Figure 12As shown, another third connecting copper busbar 820b includes an extension section 821. The extension section 821 extends out of the circuit board 500 along the extension direction of the first connecting copper busbar 110. The extension section 821 and another adapter copper busbar 810b respectively fix the two ends of the fuse 830. The two ends of the fuse 830 are stacked on the side of the extension section 821 and the other adapter copper busbar 810b away from the bottom 460 of the slot of the slot-shaped housing 400, along the slot opening 410 of the slot-shaped housing 400 towards the Z direction.

[0172] In this embodiment, an extension section 821 extends out of the circuit board 500 along the extension direction of the first connecting copper busbar 110. The extension section 821 and another adapter copper busbar 810b respectively fix the two ends of the fuse 830. In order to electrically connect the other third connecting copper busbar 820b to the fuse 830, the other third connecting copper busbar 820b needs to extend out of the circuit board 500. This allows the high-voltage DC power output from the power battery 20 to first pass through the fuse 830 and then be transmitted to the extension section 821 of the other third connecting copper busbar 820b and flow into the positive terminal of the on-board charger 31b, thereby improving the safety and reliability of the power supply device 31.

[0173] In this embodiment, the fuse 830 is stacked on the extension section 821 and another adapter copper bus 810b on the side away from the bottom 460 of the slot of the slot housing 400, along the slot opening 410 of the slot housing 400. This allows the other adapter copper bus 810b and the other third connecting copper bus 820b to be installed on the slot housing 400 first, and then the fuse 830 to be installed. Finally, the fuse 830 is fixed with screws from the slot opening 410 of the slot housing 400, which facilitates the assembly of the power supply device 31.

[0174] In one embodiment, a third connecting copper busbar 820a is electrically connected to the negative terminal of the power battery 20, and another third connecting copper busbar 820b is electrically connected to the positive terminal of the power battery 20.

[0175] In one embodiment, such as Figure 4 As shown, along the first direction Y, a first sidewall 420a, a fuse 830, and a circuit board 500 are arranged in sequence.

[0176] Figure 14 This is another schematic diagram of the capacitor filter integrated module 100 provided in the embodiments of this application.

[0177] In one embodiment, such as Figure 5 and Figure 14As shown, a portion 121 of three pairs of second connecting copper busbars 120 and a portion 841 of one pair of external copper busbars 840 extend into the capacitor filter integrated module 100. Another portion 122 of the three pairs of second connecting copper busbars 120 exposed outside the capacitor filter integrated module 100 is used to output DC power to the three-phase power module 200. The other portion 842 of the one pair of external copper busbars 840 exposed outside the capacitor filter integrated module 100 is used to connect an external capacitor or output high-voltage DC power to the DC-DC converter 31d. The arrangement direction of the other portion 122 of the three pairs of second connecting copper busbars 120 and the other portion 842 of the one pair of external copper busbars 840 intersects with the arrangement direction of the two first connecting copper busbars 110.

[0178] In this embodiment, a portion 121 of the three pairs of second connecting copper busbars 120 and a portion 841 of the one pair of external copper busbars 840 extend into the capacitor filter integrated module 100, allowing them to receive high-voltage DC power input from the two first connecting copper busbars 110 into the capacitor filter integrated module 100. Another portion 122 of the three pairs of second connecting copper busbars 120 exposed outside the capacitor filter integrated module 100 is used to output DC power to the three-phase power module 200. This allows the filtered and regulated high-voltage DC power within the capacitor filter integrated module 100 to be transmitted to the three-phase power module 200 via the other portion 122 of the three pairs of second connecting copper busbars 120, whereby the three-phase power module 200 converts the high-voltage DC power into three-phase AC power for output to the drive motor 32. One pair of external copper busbars 840 is exposed on the other part 842 of the capacitor filter integrated module 100 for connecting external capacitors or outputting high-voltage DC power to the DC converter 31d. This allows for the expansion of the capacity of the capacitor filter integrated module 100 by connecting external capacitors through cables outside the housing 100a of the capacitor filter integrated module 100 according to the high power capacity requirements of the power supply device 31. Alternatively, the high-voltage DC power filtered and regulated by the capacitor filter integrated module 100 can be directly transmitted to the DC converter 31d through the one pair of external copper busbars 840 via cables or adapters. The DC converter 31d converts the high-voltage DC power into low-voltage DC power for use by low-voltage electrical components.

[0179] In this embodiment, the arrangement direction of the other portion 122 of the three pairs of second connecting copper busbars 120 and the other portion 842 of the one pair of external connecting copper busbars 840 intersects with the arrangement direction of the two first connecting copper busbars 110, so that the arrangement of the three pairs of first connecting copper busbars 110 and the one pair of external connecting copper busbars 840 with the two first connecting copper busbars 110 will not interfere with each other, which facilitates installation. It also helps to make the extension directions of the three pairs of second connecting copper busbars 120 and the one pair of external connecting copper busbars 840 different from those of the two first connecting copper busbars 110, thereby making the arrangement of the three pairs of second connecting copper busbars 120 and the one pair of external connecting copper busbars 840 with the two first connecting copper busbars 110 more compact within the slotted housing 400, which is beneficial to improving the integration of the power supply device 31 and reducing the size of the power supply device 31.

[0180] In one embodiment, three pairs of second connecting copper busbars 120 exposed in another portion 122 of the capacitor filter integrated module 100 include a bent section 123 and an overlapping section 124.

[0181] In one embodiment, such as Figure 6 , Figure 7 and Figure 14 As shown, each second connecting copper busbar 120 includes a bent section 123 and an overlapping section 124. The bent section 123 is bent away from a second sidewall 430a along the second direction X. The overlapping section 124 is stacked on the housing 100a of the capacitor filter integrated module 100 along the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100. Each overlapping section 124 is used to overlap one input copper busbar 210 of the three-phase power module 200.

[0182] In this embodiment, each second connecting copper busbar 120 includes a bent section 123 and an overlapping section 124. The bent section 123 is bent away from a second sidewall 430a along the second direction X, so that the overlapping section 124 connected to the bent section 123 can be set closer to the three-phase power module 200. This prevents the second connecting copper busbar 120 from occupying additional space in the housing 100a of the capacitor filter integrated module 100 along the second direction X. It also increases the height of the overlapping section 124 of the second connecting copper busbar 120 along the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100. Raising the overlapping section 124 makes it easier for each overlapping section 124 to be directly overlapped with one input copper busbar 210 of the three-phase power module 200 without the need for additional adapters, thus simplifying the assembly process of the input copper busbar 210 of the three-phase power module 200 and the three pairs of second connecting copper busbars 120.

[0183] In this embodiment, the overlapping section 124 of the three-phase power module 200 and the capacitor filter integrated module 100 is stacked on the housing 100a of the capacitor filter integrated module 100 along the stacking direction Z. The three-phase power module 200 is also stacked on the housing 100a of the capacitor filter integrated module 100, thereby making it easier to assemble and connect the overlapping section 124 of the second connecting copper busbar 120 with the input copper busbar 210 of the three-phase power module 200.

[0184] The stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100 is the same as the orientation direction Z of the slot 410 of the slot-shaped housing 400.

[0185] In one embodiment, such as Figure 5 , Figure 7 and Figure 14 As shown, the two second connecting copper busbars 120 are also used to connect an external copper busbar 840 respectively. The external copper busbar 840 is stacked on the housing 100a along the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100. The external copper busbar 840 is spaced apart from the overlapping section 124. The external copper busbar 840 is used to connect capacitors or to connect the DC converter 31d of the power supply device 31.

[0186] In this embodiment, an external copper busbar 840 is stacked on the housing 100a along the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100. The external copper busbar 840 and the overlapping section 124 are spaced apart, so that the external copper busbar 840 and the overlapping section 124 of the second connecting copper busbar 120 can work relatively independently.

[0187] In this embodiment, the external copper busbar 840 is used to connect capacitors or to connect the DC-DC converter 31d of the power supply device 31. This allows for the expansion of the capacity of the power supply device 31 by connecting an external capacitor outside the housing 100a of the capacitor filter integrated module 100 according to the high power requirements of the power supply device 31. The external copper busbar 840 can also directly transmit the high-voltage DC power filtered and regulated by the capacitor filter integrated module 100 to the DC-DC converter 31d, which then converts the high-voltage DC power into low-voltage DC power for use by low-voltage DC electrical components.

[0188] Figure 15 This is an exploded view of the capacitor filter integrated module 100 provided in the embodiments of this application.

[0189] In one embodiment, such as Figure 10 and Figure 15As shown, the housing 100a of the capacitor filter integrated module 100 includes a capacitor cavity 150 and a first shielding wall 160. The capacitor cavity 150 includes a first cavity wall 151 and a second cavity wall 152 arranged opposite to each other along the first direction Y. The bus capacitor 130 includes two sets of capacitor cores 131. Each set of capacitor cores 131 includes at least one capacitor core 131. The two sets of capacitor cores 131 are arranged along the second direction X. The length of one set of capacitor cores 131a along the first direction Y is greater than the length of the other set of capacitor cores 131b. The first cavity wall 151 includes a first segment 1511 and a second segment 1512 arranged along the second direction X. The distance between the second segment 1512 and the second cavity wall 152 along the first direction Y is smaller than the distance between the first segment 1511 and the second cavity wall 152. The space between the first segment 1511 and the second cavity wall 152 is used to accommodate a set of capacitor cores 131a. The space between the inner side of the second segment 1512 and the second cavity wall 152 is used to accommodate another set of capacitor cores 131b and a portion of the electrical components 141 of the filter assembly 140. The outer side of the second segment 1512 is used to enclose the first shielding wall 160 to form a receiving groove 170. Figure 8 As shown, the receiving slot 170 accommodates another portion of the electrical components 142 of the filter assembly 140. The receiving slot 170 includes an opening 171, such as... Figure 6 and Figure 15 As shown, opening 171 is used to pass through a pair of first connecting copper busbars 110, and opening 171 is oriented toward a first sidewall 420a along a first direction Y.

[0190] In the embodiments of this application, such as Figure 15 As shown, the distance between the second segment 1512 and the second cavity wall 152 along the first direction Y is denoted as L6, and the distance between the first segment 1511 and the second cavity wall 152 is denoted as L7. L6 < L7, and L7 is larger, so that the space between the first segment 1511 and the second cavity wall 152 can be used to accommodate a group of capacitor cores 131a with a longer length along the first direction Y. L6 is smaller, so that the length of another group of capacitor cores 131b along the first direction Y is smaller, so that the space between the inner side of the second segment 1512 and the second cavity wall 152 is also sufficient to accommodate another group of capacitor cores 131b and part of the electrical components 141 of the filter assembly 140.

[0191] In this embodiment, the outer side of the second segment 1512 is used to enclose the first shielding wall 160 to form a receiving groove 170. The receiving groove 170 accommodates another part of the electrical components 142 of the filter assembly 140. The receiving groove 170 is formed by using the remaining space of one set of capacitor cores 131a relative to another set of capacitor cores 131b along the first direction Y to enclose the first shielding wall 160. The layout of the receiving groove 170 borrows part of the space of the capacitor cavity 150, so that the formation of the receiving groove 170 will not occupy too much space of the capacitor cavity 150 along the first direction Y and the second direction X, so that the overall volume of the capacitor filter integrated module 100 is small.

[0192] In this embodiment, the receiving groove 170 includes an opening 171 for a pair of first connecting copper busbars 110 to pass through, thereby allowing the pair of first connecting copper busbars 110 to be fixed and electrically connected to the capacitor filter integrated module 100 from the position of the opening 171 of the receiving groove 170, which facilitates installation. It also eliminates the need for the pair of first connecting copper busbars 110 to pass through the cavity wall of the capacitor cavity 150, allowing the pair of first connecting copper busbars 110 and the bus capacitor 130 inside the capacitor cavity 150 to be electrically isolated through the cavity wall, which is beneficial for the normal operation of the power supply device 31.

[0193] In this embodiment, the opening 171 faces a first sidewall 420a along the first direction Y, facilitating the electrical connection and installation of a pair of first connecting copper busbars 110 passing through the opening 171 with a high-voltage connector 700 fixed to a DC mounting hole 440 in the first sidewall 420a.

[0194] In one embodiment, the first shielding wall 160 can be an iron plate, steel plate, or silicon steel plate, etc. In another embodiment, the first shielding wall 160 can be injection molded from both injection molding compound and shielding material, wherein the shielding material includes iron, steel, or silicon steel.

[0195] In one embodiment, such as Figure 12 and Figure 15 As shown, along the first direction Y, the clearance notch 4610 of the shielding protrusion 461 is arranged opposite to the opening 171 of the receiving groove 170, so that a pair of first connecting copper busbars 110 can pass smoothly through the clearance notch 4610 and the opening 171 of the receiving groove 170, which facilitates the assembly of the capacitor filter integrated module 100 into the groove housing 400.

[0196] In one embodiment, such as Figure 15 As shown, the capacitor cavity 150 also includes a connecting section 153, which is used to connect the first section 1511 and the second section 1512. The connecting section 153 is arranged opposite to the first shielding wall 160 along the second direction X. The housing 100a also includes a second shielding wall 180, which is arranged adjacent to the connecting section 153 along the first direction Y. The second shielding wall 180 is arranged opposite to the first shielding wall 160 along the second direction X. The second shielding wall 180 is used to enclose the outer side of the connecting section 153, the first shielding wall 160 and the second section 1512 to form a receiving groove 170. The second shielding wall 180 and the first shielding wall 160 form the opening 171 of the receiving groove 170.

[0197] In this embodiment, the connecting segment 153 along the second direction X is arranged opposite to the first shielding wall 160. The housing 100a also includes a second shielding wall 180. The second shielding wall 180 and the connecting segment 153 are arranged adjacent to each other along the first direction Y. The second shielding wall 180 is used to enclose the connecting segment 153, the first shielding wall 160 and the outer side of the second segment 1512 to form a receiving groove 170. When the length of the connecting segment 153 is insufficient to form a sufficiently large receiving groove 170 to accommodate another part of the electrical components 142 of the filter assembly 140, the length of the connecting segment 153 can be extended by the second shielding wall 180 to expand the space of the receiving groove 170 along the first direction Y, so that the other part of the electrical components 142 of the filter assembly 140 can be completely installed and fixed in the receiving groove 170.

[0198] In this embodiment, the second shielding wall 180 is used to enclose the outer side of the connecting section 153, the first shielding wall 160, and the second section 1512 to form a receiving groove 170. The second shielding wall 180 and the first shielding wall 160 form the opening 171 of the receiving groove 170, so that when the other part of the electrical components 142 of the filter assembly 140 is installed and fixed in the receiving groove 170, it can be done from the direction of the opening 171 of the receiving groove 170. The opening 171 of the receiving groove 170 is also used to pass through a pair of first connecting copper busbars 110, which also facilitates the pair of first connecting copper busbars 110 to transmit the high voltage DC power received from the power battery 20 into the capacitor filter integrated module 100 through the other part of the electrical components 142 of the filter assembly 140.

[0199] In one embodiment, such as Figure 15 As shown, the second shielding wall 180 and the connecting segment 153 along the first direction Y need to satisfy the requirement that the sum of the lengths of the second shielding wall 180 and the connecting segment 153 is sufficient to accommodate another portion of the electrical components 142 of the filter assembly 140. In some embodiments, if the length of the connecting segment 153 is long enough, it may not be necessary to arrange the second shielding wall 180 to extend its length.

[0200] In one embodiment, the second shielding wall 180 can be an iron plate, steel plate, or silicon steel plate, etc. In another embodiment, the second shielding wall 180 can be injection molded from injection molding compound and shielding material, the shielding material including iron, steel, or silicon steel. In one embodiment, during the injection molding of the housing 100a, shielding material can be added at the locations where the first shielding wall 160 and the second shielding wall 180 are injection molded, so that these shielding materials are integrally injection molded into the injection molding compound to form the first shielding wall 160 and the second shielding wall 180.

[0201] In one embodiment, such as Figure 7 and Figure 15As shown, the capacitor cavity 150 includes a top plate 154 and a bottom plate 155. The top plate 154 and bottom plate 155 face each other along the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100. The surface of the top plate 154 facing away from the bottom plate 155 is used to fix the three-phase power module 200. A portion of the surface of the top plate 154 facing the bottom plate 155 forms the bottom 172 of the receiving groove 170. The opening 173 of the receiving groove 170 faces away from the top plate 154 along the stacking direction Z of the capacitor filter integrated module 100 and the bottom 460 of the groove-shaped housing 400.

[0202] In this embodiment, the top plate 154 and the bottom plate 155 are opposite each other along the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100. The surface of the top plate 154 facing away from the bottom plate 155 is used to fix the three-phase power module 200, so that the arrangement of the three-phase power module 200 can utilize the space of the capacitor cavity 150 along the first direction Y and the second direction X, which is beneficial to reducing the size of the power supply device 31 along the first direction Y and the second direction X.

[0203] In this embodiment, a portion of the surface of the top plate 154 facing the bottom plate 155 constitutes the bottom 172 of the receiving groove 170, so that the receiving groove 170 can reuse a portion of the top plate 154 of the capacitor cavity 150 to form the bottom 172, so that the receiving groove 170 will not occupy additional space of the capacitor cavity 150 along the first direction Y and the second direction X, which is beneficial to make the capacitor filter integrated module 100 have a smaller volume along the first direction Y and the second direction X, and is beneficial to the miniaturization of the power supply device 31.

[0204] In this embodiment, since the surface of the top plate 154 facing away from the bottom plate 155 is used to fix the three-phase power module 200, the slot opening 173 of the receiving slot 170 is facing away from the top plate 154 along the stacking direction Z of the bottom 460 of the slot of the capacitor filter integrated module 100 and the slot-shaped housing 400, so that the other part of the electrical components 142 of the filter assembly 140 can be arranged and installed from the direction of the slot opening 173 of the receiving slot 170, which facilitates the installation and fixing of the filter assembly 140 of the capacitor filter integrated module 100.

[0205] The stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the slot-shaped housing 400 is the same as the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100 and the orientation direction Z of the slot opening 410 of the slot-shaped housing 400.

[0206] In one embodiment, such as Figure 8 and Figure 10As shown, the bottom plate 155 of the capacitor cavity 150 includes a recessed groove 1551, which is used to accommodate the connector 156 of the filter assembly 140 and the bus capacitor 130. The recessed groove 1551 is recessed toward the top plate 154 along the stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the groove-shaped housing 400. The space between the bottom of the recessed groove 1551 and the top plate 154 is used to accommodate a part of the electrical components 141 of the filter assembly 140.

[0207] In this embodiment, the recessed groove 1551 along the stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the slot-shaped housing 400 faces the top plate 154, which ensures that the connecting piece 156 of the filter component 140 and the bus capacitor 130 will not occupy additional space outside the stacking direction Z of the bottom plate 155 of the capacitor cavity 150 along the stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the slot-shaped housing 400.

[0208] In this embodiment, the height of a portion of the electrical components 141 of the filter assembly 140 is lower than the height of the capacitor core 131 of the bus capacitor 130. Therefore, by designing a recessed groove 1551 into the top plate 154, the connector 156 of the filter assembly 140 and the bus capacitor 130 is arranged in the recessed groove 1551, and the inner side of the recessed groove 1551 is exactly placed with a portion of the electrical components 141 of the filter assembly 140. This ensures that the connector 156 between the filter assembly 140 and the bus capacitor 130 does not additionally increase or decrease the size of the capacitor filter integrated module 100 along the stacking direction Z of the capacitor filter integrated module 100 and the bottom 460 of the slot-shaped housing 400. This fully utilizes the space of the housing 100a of the capacitor filter integrated module 100, making the overall volume of the capacitor filter integrated module 100 smaller and making it easier to assemble the capacitor filter integrated module 100 into the slot-shaped housing 400.

[0209] Among them, the stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the slot 410 of the slot housing 400 is the same as the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100.

[0210] In one embodiment, such as Figure 8 and Figure 10 As shown, the connector 156 between the filter assembly 140 and the bus capacitor 130 includes a fourth connecting copper busbar 1561 and a fifth connecting copper busbar 1562. The fourth connecting copper busbar 1561 is used to embed another part of the electrical component 142 of the filter assembly 140, and the fifth connecting copper busbar 1562 is used to embed the capacitor cavity 150 and electrically connect the bus capacitor 130. The fourth connecting copper busbar 1561 is used to fix the fifth connecting copper busbar 1562. Wherein, as... Figure 8 and Figure 15As shown, the recessed slot 1551 includes two slots 1552 and 1553 and a through hole 1554. One slot 1552 is located away from the top plate 154 along the stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the slot-shaped housing 400. The other slot 1553 is located towards the receiving slot 170 along the first direction Y. The other slot 1553 is used to connect the receiving slot 170 and the recessed slot 1551 and to allow the fourth connecting copper busbar 1561 to pass through. The through hole 1554 penetrates the wall of the recessed slot 1551 along the second direction X. Figure 8 and Figure 10 As shown, the wire hole 1554 is used to connect the capacitor cavity 150 and the clearance groove 1551, and to pass through the fifth connecting copper busbar 1562.

[0211] In this embodiment, by opening two slots 1552 and 1553 and a wire hole 1554 in the recessed slot 1551, the arrangement of the fourth connecting copper busbar 1561 and the fifth connecting copper busbar 1562 in the connector 156 is determined. One slot 1552 is opposite to the top plate 154 along the stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the slot-shaped housing 400, which facilitates the installation of the connector 156 from the direction opposite to the top plate 154. The other slot 1553 is oriented towards the receiving slot 170 along the first direction Y. The other slot 1553 is used to connect the receiving slot 170 and the recessed slot 1551 and to pass through the fourth connecting copper busbar 1561, which facilitates the electrical connection between the fourth connecting copper busbar 1561 in the recessed slot 1551 and another part of the electrical components 142 of the filter assembly 140 in the receiving slot 170.

[0212] In this embodiment, the through hole 1554 penetrates the wall of the relief groove 1551 along the second direction X. The through hole 1554 is used to connect the capacitor cavity 150 and the relief groove 1551 and to pass through the fifth connecting copper bus 1562, so that the fifth connecting copper bus 1562 can directly pass through the through hole 1554 and be electrically connected to the bus capacitor 130 in the capacitor cavity 150, without the need to run cables or adapters from outside the housing 100a of the capacitor filter integrated module 100, making the circuit layout more orderly.

[0213] In this embodiment, the recessed slot 1551 accommodates the fourth connecting copper busbar 1561 and the fifth connecting copper busbar 1562. The fourth connecting copper busbar 1561 passes through another slot 1553 and is electrically connected to another part of the electrical components 142 of the filter assembly 140. The fifth connecting copper busbar 1562 passes through the wire hole 1554 and is electrically connected to the bus capacitor 130. This makes the arrangement of the connectors 156 of the filter assembly 140 and the bus capacitor 130 compact and allows the filter assembly 140 and the bus capacitor 130 to be electrically connected with the shortest copper busbar distance.

[0214] In one embodiment, such as Figure 6 and Figure 8 As shown, the capacitor filter integrated module 100 also extends a grounding piece 190a, which is directed towards the bottom 460 of the slot 400 along the slot opening 410 of the slot-shaped housing 400. The grounding piece 190a is used to contact the bottom 460 of the slot 400.

[0215] In this embodiment, the capacitor filter integrated module 100 also extends a grounding piece 190a. The grounding piece 190a is directed towards the bottom 460 of the slot 400 along the slot opening 410 of the slot-shaped housing 400 in the Z direction. The grounding piece 190a is used to contact the bottom 460 of the slot 400. This allows the grounding piece 190a to contact the bottom 460 of the slot 400 by directly using the downward force along the slot opening 410 of the slot 400 during the assembly of the capacitor filter integrated module 100 into the slot 400. This achieves the simultaneous grounding of the capacitor filter integrated module 100 after assembly. When two overlapping copper busbars 720 are stacked on top of a pair of first connecting copper busbars 110, and the two overlapping copper busbars 720 and the pair of first connecting copper busbars 110 are fixed by screws, the two overlapping copper busbars 720 exert a force on the pair of first connecting copper busbars 110 in the direction of the bottom 460 of the groove-shaped housing 400, so that the grounding piece 190a is in closer contact with the bottom 460 of the groove-shaped housing 400, thereby improving the reliability of grounding.

[0216] In one embodiment, grounding piece 190a is used to electrically connect the pre-stage capacitor in filter assembly 140.

[0217] In one embodiment, such as Figure 10 As shown, a portion of the electrical components 141 of the filter assembly 140 includes a plurality of first capacitors 141a, which are used for electrical connection to the first connecting copper busbar 110. Wherein, as Figure 15 As shown, the bottom of the clearance slot 1551 also includes a through hole 1555. The through hole 1555 penetrates the bottom of the clearance slot 1551 along the Z-direction of the stacking of the three-phase power module 200 and the capacitor filter integrated module 100, as shown. Figure 6 , Figure 10 and Figure 15 As shown, the through hole 1555 is used to connect the capacitor cavity 150 and the clearance groove 1551 and to pass through the grounding plate 190b, which is used to electrically connect multiple first capacitors 141a and to electrically connect the slotted housing 400.

[0218] In this embodiment of the application, a plurality of first capacitors 141a are used to electrically connect to the first connecting copper busbars 110, so that the first capacitors 141a can receive high voltage DC power transmitted from a pair of first connecting copper busbars 110.

[0219] In this embodiment, the bottom of the recessed slot 1551 also includes a through hole 1555. The through hole 1555 penetrates the bottom of the recessed slot 1551 along the stacking direction of the three-phase power module 200 and the capacitor filter integrated module 100, allowing the grounding piece 190b to directly pass through the through hole 1555 to electrically connect the multiple first capacitors 141a in the capacitor cavity 150 to the slotted housing 400. This also allows the multiple first capacitors 141a in the capacitor cavity 150 to be grounded by the slotted housing 400, which helps ensure the normal operation of the capacitor filter integrated module 100. Furthermore, it allows the grounding piece 190b to be directly electrically connected to the slotted housing 400 after the capacitor filter integrated module 100 is assembled. In one embodiment, the first capacitor 141a is a subsequent capacitor in the filter assembly 140, and the grounding piece 190b is used to electrically connect to the subsequent capacitor in the filter assembly 140.

[0220] In one embodiment, such as Figure 15 As shown, the capacitor cavity 150 further includes a third cavity wall 157, which is connected to the first cavity wall 151 and the second cavity wall 152. The third cavity wall 157 extends along the first direction Y, and the third cavity wall 157, the second segment 1512, and the first segment 1511 are arranged sequentially along the second direction X. The clearance groove 1551 also includes a connecting hole 1556, which penetrates the groove wall of the clearance groove 1551 along the second direction X. The connecting hole 1556 and the wire hole 1554 are arranged opposite each other along the second direction X. The connecting hole 1556 is used to connect the clearance groove 1551 and the outside of the third cavity wall 157. The grounding piece 190b includes a bent portion 191, through which the connecting hole 1556 passes. The outside of the third cavity wall 157 is used to fix the bent portion 191.

[0221] In the embodiments of this application, such as Figure 10 and Figure 15 As shown, the recessed slot 1551 also includes a connecting hole 1556, which penetrates the slot wall of the recessed slot 1551 along the second direction X. This allows the bent portion 191 of the grounding piece 190b to pass directly through the connecting hole 1556 and be fixed to the outside of the third cavity wall 157 via the shortest path. This simplifies the electrical connection structure between the grounding piece 190b and the multiple first capacitors 141a and the slot-shaped housing 400 within the capacitor filter integrated module 100. Furthermore, the arrangement of the grounding piece 190b does not affect the arrangement of the filter assembly 140 and the connector 156 of the bus capacitor 130 within the recessed slot 1551, resulting in a more organized and rational layout of the components.

[0222] In one embodiment, the bottom 460 of the groove-shaped housing 400 includes a boss. The boss protrudes from the bottom 460 towards the opening 410 along the stacking direction Z of the three-phase power module 200 and the capacitor filter integrated module 100. The boss is used for electrical connection with the grounding piece 190b. Multiple electrical components, bosses, and capacitor filter integrated modules 100 of the on-board charger 31b are arranged sequentially along the second direction X. The grounding piece 190b has a bending portion 191, which can also make the grounding piece 190b protrude outward from the third cavity wall 157, so that the grounding piece 190b can better make a pressing contact electrical connection with the boss in the bottom 460 of the groove-shaped housing 400.

[0223] Figure 16 This is another exploded view of the capacitor filter integrated module 100 provided in the embodiments of this application.

[0224] In one embodiment, such as Figure 7 , Figure 15 and Figure 16 As shown, the capacitor cavity 150 includes a wire outlet 158. The wire outlet 158 ​​extends through the cavity wall of the capacitor cavity 150 along the second direction X. The wire outlet 158 ​​and the third cavity wall 157 are arranged opposite to each other along the second direction X. The wire outlet 158 ​​is used to pass through three pairs of second connecting copper busbars 120.

[0225] In this embodiment, the capacitor cavity 150 includes a wire outlet 158 ​​for passing through three pairs of second connecting copper busbars 120. This ensures that the arrangement of the three pairs of second connecting copper busbars 120 does not interfere with the arrangement of the electrical components of the filter assembly 140. It also allows the high-voltage DC power transmitted by the filter assembly 140 to be filtered and stabilized by the bus capacitor 130 inside the capacitor cavity 150 before being transmitted to the input copper busbar 210 of the three-phase power module 200.

[0226] In one embodiment, the wire outlet 158 ​​along the second direction X is arranged opposite to a second sidewall 430a.

[0227] Figure 17 This is a schematic diagram of an integrated bracket 143 in the filter component 140 provided in this application embodiment.

[0228] In one embodiment, such as Figure 15 and Figure 17As shown, the filter assembly 140 includes an integrated bracket 143, which includes a plurality of filter capacitor slots 1431. Another part of the electrical components 142 of the filter assembly 140 includes a plurality of second capacitors 142a. The plurality of filter capacitor slots 1431 are used to accommodate the plurality of second capacitors 142a of the filter assembly 140. Two filter capacitor slots 1431 are distributed on both sides of the integrated bracket 143 along the second direction X. The opening directions of the two filter capacitor slots 1431 are opposite to each other. The two filter capacitor slots 1431 are used to accommodate two second capacitors 142a.

[0229] In this embodiment, an integrated bracket 143 is designed to integrate multiple second capacitors 142a of the filter assembly 140 into one unit. This allows another part of the electrical components 142 of the filter assembly 140 to be integrated and installed within the receiving slot 170 of the housing 100a of the capacitor filter integrated module 100, facilitating installation. Using the integrated bracket 143 to fix multiple second capacitors 142a also increases the integration density of the filter assembly 140, which helps to reduce the size of the filter assembly 140 and the capacitor filter integrated module 100. The second capacitors 142a are the pre-stage capacitors in the filter assembly 140.

[0230] In this embodiment of the application, two filter capacitor slots 1431 are distributed on both sides of the integrated bracket 143 along the second direction X. The opening directions of the two filter capacitor slots 1431 are opposite. The two filter capacitor slots 1431 are used to accommodate two second capacitors 142a, which can make the arrangement of the second capacitors 142a more regular and facilitate the installation of the second capacitors 142a on the integrated bracket 143 from both sides.

[0231] In one embodiment, the two second capacitors 142a are Y capacitors and need to be grounded.

[0232] In one embodiment, such as Figure 15 and Figure 17 As shown, the bottom of the integrated bracket 143 includes a connector groove 1432. The opening of the connector groove 1432 faces the same direction as the opening 173 of the receiving groove 170. The connector groove 1432 is used to receive a part of the metal part 144. Another part of the metal part 144 is used to extend out of the connector groove 1432. Another part of the metal part 144 is used to electrically connect to the slot-shaped housing 400 of the power supply device 31.

[0233] In this embodiment, the opening of the connector groove 1432 faces the same direction as the opening 173 of the receiving groove 170. The opening 173 of the receiving groove 170 faces the bottom 460 of the groove-shaped housing 400. By setting the connector groove 1432 at the bottom of the integrated bracket 143, the metal part 144 is arranged in the connector groove 1432 and extends out of the connector groove 1432 to achieve grounding with the bottom 460 of the groove-shaped housing 400. This allows the two second capacitors 142a fixed in the integrated bracket 143 to be directly grounded to the groove-shaped housing 400 of the power supply device 31 when the capacitor filter integrated module 100 is installed during assembly, simplifying the assembly process.

[0234] In this embodiment, arranging the connector slot 1432 at the bottom of the integrated bracket 143 allows the metal part 144 inside the connector slot 1432 to also be arranged at the bottom of the integrated bracket 143. This facilitates the metal part 144 being subjected to the pressing torque of the integrated bracket 143 and the bottom 460 of the slotted housing 400 when the capacitor filter integrated module 100 is installed into the slotted housing 400. This allows the metal part 144 to better electrically connect the two second capacitors 142a and the bottom 460 of the slotted housing 400.

[0235] In one embodiment, the metal part 144 is made of an elastic metal material. During the process of installing the capacitor filter integrated module 100 into the slotted housing 400, the metal part 144 can be squeezed to deform so that the two second capacitors 142a are grounded to the slotted housing 400.

[0236] In one embodiment, another electrical component 142 of the filter assembly 140 further includes a magnetic ring 145, which is arranged adjacent to the integrated bracket 143 along the first direction Y. The magnetic ring 145 can filter the high-voltage direct current flowing through the second capacitor 142a. The high-voltage direct current from the power battery 20 can undergo two filtering processes through the filtering magnetic ring 462 and the magnetic ring 145, thereby improving the electromagnetic compatibility of the power supply device 31 and facilitating the transmission of more stable and accurate high-voltage direct current to the bus capacitor 130 in the capacitor cavity 150.

[0237] In one embodiment, a portion 111 of the two first connecting copper busbars 110 extends into the capacitor filter integrated module 100 through the magnetic ring 145.

[0238] In one embodiment, such as Figure 16As shown, the housing of the filter assembly 140 for accommodating the magnetic ring 145 includes a fixing protrusion 146, and the outer wall of the capacitor cavity 150 includes a fixing boss 159. The fixing boss 159 extends away from the top plate 154 of the capacitor cavity 150 along the stacking direction Z of the bottom 460 of the capacitor filter integrated module 100 and the slot-shaped housing 400. The fixing protrusion 146 and the fixing boss 159 are arranged opposite to each other along the stacking direction Z of the bottom 460 of the slot-shaped housing 400 and the capacitor filter integrated module 100. The fixing protrusion 146 and the fixing boss 159 are fixedly connected by screws, so that the filter assembly 140 can be stably fixed in the receiving groove 170 of the housing 100a of the capacitor filter integrated module 100.

[0239] The power supply device, powertrain, and electric vehicle provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and embodiments of this application. The description of the embodiments above is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in specific embodiments and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A power supply device characterized by comprising: The power supply device comprises a capacitor filter integrated module and a three-phase power module, the power supply device comprises a channel-shaped shell for accommodating the capacitor filter integrated module and the three-phase power module, the three-phase power module is stacked on the capacitor filter integrated module, wherein: The capacitor filter integrated module comprises a bus capacitor, a filter assembly, a pair of first connecting copper bars and three pairs of second connecting copper bars, the bus capacitor and the filter assembly are used for filtering and stabilizing high-voltage direct-current, the pair of first connecting copper bars are used for electrically connecting at least one of the bus capacitor and the filter assembly and a high-voltage connector, the three pairs of second connecting copper bars are used for electrically connecting input copper bars of the three-phase power module, and output copper bars of the three-phase power module are used for connecting a driving motor through a three-phase connector. The channel-shaped shell comprises two first side walls, two second side walls and direct-current mounting holes, the two first side walls are arranged opposite to each other along a first direction, the two second side walls are arranged opposite to each other along a second direction, the second direction is perpendicular to the first direction, the direct-current mounting holes are distributed on one of the first side walls, the direct-current mounting holes are used for fixing the high-voltage connector, the high-voltage connector is used for electrically connecting a power battery, the pair of first connecting copper bars is opposite to the one first side wall along the first direction, the three pairs of second connecting copper bars and the input copper bars of the three-phase power module are opposite to one of the second side walls along the second direction, and the output copper bars of the three-phase power module are opposite to the other second side wall along the second direction.

2. The power supply device according to claim 1, characterized by The channel-shaped shell further comprises three-phase wire mounting holes, the three-phase wire mounting holes are distributed on the other first side wall, and the three-phase wire mounting holes are used for fixing the three-phase connector.

3. The power supply device according to claim 2, wherein The distance between the three-phase wire mounting holes and the one second side wall along the second direction is greater than the distance between the direct-current mounting holes and the one second side wall along the second direction.

4. The power supply device according to any one of claims 1 to 3, characterized by, The channel bottom of the channel-shaped shell comprises a shielding protrusion, the shielding protrusion is arranged between the two first side walls along the first direction, a space between the shielding protrusion and the other first side wall is used for accommodating the capacitor filter integrated module, a space between the shielding protrusion and the one first side wall is used for accommodating a filter magnetic ring, the high-voltage connector passes through the filter magnetic ring, the shielding protrusion comprises an avoidance notch, and the avoidance notch is used for passing through the pair of first connecting copper bars.

5. The power supply device according to claim 4, wherein The distance between the pair of first connecting copper bars and the output copper bars of the three-phase power module along the second direction is less than the distance between the pair of first connecting copper bars and the three pairs of second connecting copper bars along the second direction, wherein: The distance between the avoidance notch and the one second side wall along the second direction is greater than half the length of the shielding protrusion along the second direction.

6. The power supply device according to claim 5, wherein The distance between the direct-current mounting holes and the one second side wall along the second direction is less than the distance between the avoidance notch and the one second side wall along the second direction, and the space between the shielding protrusion and the one first side wall is further used for accommodating a pair of adapter copper bars, the pair of adapter copper bars are used for connecting the high-voltage connector and the pair of first connecting copper bars.

7. The power supply device according to claim 6, wherein The power supply device further comprises a plurality of electrical components of an on-board charger, the plurality of electrical components of the on-board charger, the capacitor filter integrated module and the one second side wall are arranged along the second direction, and the pair of adapter copper bars are further used for electrically connecting the plurality of electrical components of the on-board charger.

8. The power supply device according to any one of claims 1 to 3, 5 to 7, wherein Each of the second connection copper bars comprises a bent segment and a lapping segment, the bent segment is bent away from the one second side wall along the second direction, and the lapping segment is laminated to a housing of the capacitor filter integrated module along a lamination direction of the three-phase power module and the capacitor filter integrated module, and each of the lapping segments is used for lapping one of the input copper bars of the three-phase power module.

9. The power supply device of claim 8, wherein, The two second connection copper bars are further used for connecting one external copper bar respectively, the external copper bar is laminated to the housing along the lamination direction of the three-phase power module and the capacitor filter integrated module, the external copper bar is spaced apart from the lapping segments, and the external copper bar is used for connecting a capacitor or a direct-current converter of the power supply device.

10. The power supply device of claim 4, wherein, Each of the second connection copper bars comprises a bent segment and a lapping segment, the bent segment is bent away from the one second side wall along the second direction, and the lapping segment is laminated to a housing of the capacitor filter integrated module along a lamination direction of the three-phase power module and the capacitor filter integrated module, and each of the lapping segments is used for lapping one of the input copper bars of the three-phase power module.

11. The power supply device according to any one of claims 1 to 3, 5 to 7, 9 to 10, wherein The housing of the capacitor filter integrated module comprises a capacitor cavity and a first shielding wall, the capacitor cavity comprises a first cavity wall and a second cavity wall arranged oppositely along the first direction, the bus capacitor comprises two groups of capacitor cores, each group of capacitor cores comprises at least one capacitor core, the two groups of capacitor cores are arranged along the second direction, and the length of one group of capacitor cores is greater than the length of the other group of capacitor cores along the first direction; The first cavity wall comprises a first segment and a second segment arranged along the second direction, the distance between the second segment and the second cavity wall is smaller than the distance between the first segment and the second cavity wall along the first direction, the space between the first segment and the second cavity wall is used for accommodating the one group of capacitor cores, the space between the inner side of the second segment and the second cavity wall is used for accommodating the other group of capacitor cores and part of electrical components of the filter assembly, the outer side of the second segment is used for enclosing the first shielding wall to form an accommodation groove, the accommodation groove accommodates another part of electrical components of the filter assembly, the accommodation groove comprises an opening, the opening is used for penetrating the pair of first connection copper bars, and the opening is directed to the one first side wall along the first direction.

12. The power supply device of claim 11, wherein, The capacitor cavity further comprises a connecting section for connecting the first section and the second section, the connecting section is arranged opposite to the first shielding wall along the second direction, the shell further comprises a second shielding wall, the second shielding wall is arranged adjacent to the connecting section along the first direction, the second shielding wall is arranged opposite to the first shielding wall along the second direction, the second shielding wall and the first shielding wall form the opening of the containing groove outside the connecting section, the first shielding wall and the second shielding wall form the opening of the containing groove.

13. The power supply device of claim 11, wherein, The capacitor cavity comprises a top plate and a bottom plate, the top plate and the bottom plate are opposite along the stacking direction of the three-phase power module and the capacitor filter integrated module, the surface of the top plate away from the bottom plate is used for fixing the three-phase power module, wherein: A part of the surface of the top plate towards the bottom plate forms the groove bottom of the containing groove, the groove opening of the containing groove is away from the top plate along the stacking direction of the capacitor filter integrated module and the groove bottom of the groove-shaped shell.

14. The power supply device of claim 13, wherein, The bottom plate of the capacitor cavity comprises a position-avoiding groove for accommodating the connecting piece of the filter assembly and the bus capacitor, the position-avoiding groove is recessed towards the top plate along the stacking direction of the capacitor filter integrated module and the groove bottom of the groove-shaped shell, the part of the electrical components of the filter assembly comprises a plurality of first capacitors for electrically connecting the first connecting copper bar, the space between the groove bottom of the position-avoiding groove and the top plate is used for accommodating the plurality of first capacitors of the filter assembly, wherein: The groove bottom of the position-avoiding groove further comprises a through hole penetrating the groove bottom of the position-avoiding groove along the stacking direction of the three-phase power module and the capacitor filter integrated module, the through hole is used for connecting the capacitor cavity and the position-avoiding groove and for penetrating a grounding sheet for electrically connecting the plurality of first capacitors and for electrically connecting the groove-shaped shell.

15. The power supply of claim 4, wherein, The shell of the capacitor filter integrated module comprises a capacitor cavity and a first shielding wall, the capacitor cavity comprises a first cavity wall and a second cavity wall arranged opposite along the first direction, the bus capacitor comprises two groups of capacitor cores, each group of capacitor cores comprises at least one capacitor core, the two groups of capacitor cores are arranged along the second direction, the length of one group of capacitor cores is greater than the length of the other group of capacitor cores along the first direction; The first cavity wall comprises a first section and a second section arranged along the second direction, the second section has a smaller distance to the second cavity wall than the first section along the first direction, a space between the first section and the second cavity wall is used to accommodate the one set of capacitor cores, a space between the second section and the second cavity wall is used to accommodate the other set of capacitor cores and a part of electrical components of the filter assembly, an outside of the second section is used to enclose the first shielding wall to form an accommodating groove, the accommodating groove accommodates another part of electrical components of the filter assembly, the accommodating groove comprises an opening, the opening is used to pass through the pair of first connecting copper bars, the opening is towards the one first side wall along the first direction.

16. The power supply of claim 8, wherein, The housing of the capacitor filter integrated module comprises a capacitor cavity and a first shielding wall, the capacitor cavity comprises a first cavity wall and a second cavity wall arranged oppositely along the first direction, the bus capacitor comprises two sets of capacitor cores, each set of capacitor cores comprises at least one capacitor core, the two sets of capacitor cores are arranged along the second direction, a length of one set of capacitor cores is greater than a length of another set of capacitor cores along the first direction; The first cavity wall comprises a first section and a second section arranged along the second direction, the second section has a smaller distance to the second cavity wall than the first section along the first direction, a space between the first section and the second cavity wall is used to accommodate the one set of capacitor cores, a space between the second section and the second cavity wall is used to accommodate the other set of capacitor cores and a part of electrical components of the filter assembly, an outside of the second section is used to enclose the first shielding wall to form an accommodating groove, the accommodating groove accommodates another part of electrical components of the filter assembly, the accommodating groove comprises an opening, the opening is used to pass through the pair of first connecting copper bars, the opening is towards the one first side wall along the first direction.

17. A powertrain, characterized by, The power assembly comprises a driving motor, a speed reducer and the power supply device as claimed in any one of claims 1-16, the power supply device is used to provide three-phase alternating current to the driving motor to drive the driving motor, the driving motor drives a wheel through the speed reducer.

18. An electric vehicle, characterized by The electric vehicle comprises a frame, a power battery and the power assembly as claimed in claim 17, the frame is used to fix the power battery and the power assembly, the power battery provides high-voltage direct current to the power supply device of the power assembly.

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