A front-rear wire-out capacitive assembly, electrical equipment and vehicle

Abstract

The utility model provides a kind of front and rear line's capacitor assembly, electrical equipment and vehicle, including packaging shell, first connecting row, second connecting row and multiple capacitors, and packaging shell forms filling containment chamber, and first connecting row and second connecting row form capacitor groove, and multiple capacitors are arranged in capacitor groove, and capacitor is electrically connected with first connecting row and second connecting row respectively, and second connecting piece and fourth connecting piece are located outside filling opening, and filling containment chamber is filled with filling glue.By filling glue, capacitor and two connecting rows can be wrapped, not only can play the role of isolation, but also can improve heat conduction efficiency, make the waste heat of capacitor be efficiently exported, and through two connecting rows, connecting piece is arranged in front and rear direction, connecting piece passes through wiring hole, then capacitor groove is formed by two connecting rows, capacitor groove is used to arrange multiple capacitors, so that the whole capacitor assembly is integrated with high volume, and the way of front and rear line is used, and line arrangement is optimized.

Description

Technical Field

[0001] This utility model relates to the field of new energy equipment, and in particular to a capacitor assembly with front and rear leads, electrical equipment, and a vehicle. Background Technology

[0002] New energy vehicles are characterized by being environmentally friendly and less polluting because they do not burn gasoline or diesel fuel. With the vigorous promotion and application of new energy power generation such as hydropower, wind power, solar power and nuclear power, many new energy vehicles are gradually being promoted and applied, such as new energy electric cars, new energy electric buses, new energy electric trucks, new energy electric cleaning vehicles, new energy electric rail transit vehicles, new energy electric air vehicles and new energy electric shipping vehicles.

[0003] The aforementioned vehicles generally have electrical equipment such as motor controllers, on-board chargers, on-board power supplies, inverters, or transformers. Taking the motor controller as an example, the power unit within the motor controller receives DC power from the battery and inverts it into AC power for output to the motor. Therefore, each power module corresponds to one phase of a three-phase motor, used to output one phase of the U, V, and W power supply to the motor. Each power module has two terminals for receiving DC power, used to receive positive and negative power respectively, and one current output terminal to output a current signal to one phase of the motor. When the motor controller receives DC power from the battery, it generally needs to pass through a filter circuit. The filter circuit has multiple capacitors. In existing technologies, these capacitors are generally soldered onto a circuit board. This capacitor arrangement only allows for wiring towards the circuit board, making the wiring method inflexible and hindering capacitor heat dissipation. Utility Model Content

[0004] The primary objective of this invention is to provide a capacitor assembly with front and rear leads.

[0005] The second objective of this invention is to provide an electrical device having the aforementioned capacitor assembly.

[0006] The third objective of this invention is to provide a vehicle having the aforementioned capacitor assembly.

[0007] To achieve the first objective of this utility model, it provides a capacitor assembly with front and rear leads, including a housing, a first connecting bar, a second connecting bar, and multiple capacitors. The housing has a top surface, a bottom surface, two connecting sidewalls, and a wiring sidewall. The top surface and bottom surface are located on opposite sides in the height direction, and the two connecting sidewalls are located on opposite sides in the width direction. The connecting sidewalls are connected between the top surface and the bottom surface. The wiring sidewall is located on one side in the length direction and is connected to the top surface, the bottom surface, and the two connecting sidewalls. The wiring sidewall has multiple first wiring holes and multiple second wiring holes, which are arranged along the width direction. The top surface, bottom surface, two connecting sidewalls, and wiring sidewalls form a potting cavity. The potting cavity has a potting opening on the other side of the wiring sidewall along the length direction. The first connecting bar is arranged in an arch shape and has a base plate, a first side plate, a second side plate, multiple first connecting pieces, and second connecting pieces. The base plate extends along the length direction, and the first and second side plates are located on the other side of the length direction. On both sides of the direction, the base plate is connected between the first side plate and the second side plate. Multiple first connecting pieces extend along the length direction and are disposed at the ends of the first side plate. Second connecting pieces extend along the length direction and are disposed at the ends of the second side plate. The first connecting pieces and the second connecting pieces extend in opposite directions. A second connecting row extends along the length direction. At both ends of the second connecting row in the length direction, third connecting pieces and fourth connecting pieces are respectively disposed. The third connecting pieces and the fourth connecting pieces extend in opposite directions along the length direction. The second connecting row and the base plate are located on both sides of the height direction. The base plate, the first side plate, the second side plate, and the second connecting row form a capacitor groove. Multiple capacitors are disposed in the capacitor groove. The first electrode of the capacitor is electrically connected to the base plate. The second electrode of the capacitor is electrically connected to the second connecting row. Multiple capacitors, the first connecting row, and the second connecting row are disposed in the potting cavity. The first connecting piece passes through the first wiring hole. The third connecting piece passes through the second wiring hole. The second connecting piece and the fourth connecting piece are located outside the potting opening. The potting cavity is filled with potting compound.

[0008] As can be seen from the above scheme, by setting the potting cavity of the encapsulation shell, the potting compound inside can wrap the capacitor and the two connecting bars, which not only plays an isolation role, but also improves the heat conduction efficiency, so that the waste heat of the capacitor can be efficiently discharged. Furthermore, by setting connecting pieces in the front and rear directions of the two connecting bars, the connecting pieces pass through the wiring holes, and together with the capacitor slot formed by the two connecting bars, the capacitor slot is used to arrange multiple capacitors, so that the entire capacitor assembly has high integration and small size, and the circuit layout is optimized by using the front and rear wiring method.

[0009] A further proposed solution is to place the base plate close to the bottom surface, the second connecting row close to the top surface, and multiple first wiring holes and multiple second wiring holes close to the top surface.

[0010] A further proposed solution is to have multiple first wiring holes and multiple second wiring holes staggered along the width direction.

[0011] A further proposed solution is to have multiple first wiring holes and multiple second wiring holes staggered in the height direction.

[0012] As can be seen from the above, by staggering and misaligning the wiring holes, the two connecting rows can be isolated from each other, thereby improving the connection stability.

[0013] A further proposed solution is to place a first insulating paper between the second connecting piece and the fourth connecting piece.

[0014] A further embodiment is that the capacitor assembly includes an extension connecting piece that extends along the length direction and is connected to a fourth connecting piece, with a second insulating paper disposed between the second connecting piece and the extension connecting piece.

[0015] As can be seen from the above, the insulation between the connecting pieces can be improved by arranging the insulating paper, and the connection of the second connecting piece can be made more flexible by extending the arrangement of the connecting pieces.

[0016] A further proposed solution is that the capacitor assembly includes a Y capacitor, which is disposed in a capacitor slot. The Y capacitor is provided with a grounding plate that extends along its length. A third wiring hole is provided on the wiring side wall, through which the grounding plate passes.

[0017] A further proposed solution is to place the grounding plate and the third wiring hole close to the bottom surface.

[0018] As can be seen from the above, the arrangement of the Y capacitor can suppress common-mode interference, and the grounding plate passes through the third wiring hole, which facilitates the grounding lead-out.

[0019] To achieve the second objective of this utility model, this utility model provides an electrical device, including a capacitor assembly, a circuit board, and a housing as described above. The capacitor assembly and the circuit board are disposed inside the housing, and the pins of the first connection bar and the pins of the second connection bar are respectively connected to the circuit board.

[0020] To achieve the third objective of this utility model, this utility model provides a means of transportation, including a capacitor assembly as described above. Attached Figure Description

[0021] Figure 1 This is a structural diagram of an embodiment of the electrical equipment of this utility model.

[0022] Figure 2 This is a structural diagram of the electrical equipment embodiment of this utility model after the cover is opened.

[0023] Figure 3 This is a structural diagram of the circuit device in an embodiment of the electrical equipment of this utility model.

[0024] Figure 4This is a structural diagram of the circuit device in an embodiment of the electrical equipment of this utility model from another perspective.

[0025] Figure 5 This is a structural diagram of an embodiment of the capacitor assembly of this utility model.

[0026] Figure 6 This is a structural diagram of an embodiment of the capacitor assembly of this utility model from another perspective.

[0027] Figure 7 This is an exploded view of an embodiment of the capacitor assembly of this utility model.

[0028] Figure 8 This is a further exploded view of an embodiment of the capacitor assembly of this utility model.

[0029] Figure 9 This is a cross-sectional view of an embodiment of the capacitor assembly of this utility model.

[0030] Figure 10 yes Figure 9 Enlarged view of point A in the middle.

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0032] Examples of electrical equipment and capacitor assemblies:

[0033] Reference Figures 1 to 10 The electrical equipment can be, but is not limited to, a motor controller, an on-board charger, an on-board power supply, an inverter, or a transformer. This embodiment will be described using a motor controller as an example.

[0034] The electrical equipment includes a housing 1 and a circuit device 20. The housing includes a base 11 and a cover 12. The base 11 forms a device receiving cavity 111. The circuit device 20 is disposed inside the receiving cavity 111. The cover 12 covers the outside of the receiving cavity 111 and is connected to the base 11. The base 11 has a DC input port 113, a signal interface 114 and a three-phase output port 112 respectively on both sides in the length direction X. The base 11 has a liquid cooling interface 115 on the side wall in the width direction Y. The base 11 has a liquid cooling tank at the bottom. The liquid cooling interface 115 is connected to the liquid cooling tank.

[0035] The circuit device 20 includes a power module 3, a capacitor assembly 2, a circuit board 203, an input copper busbar 204, and a connecting bracket 202. The connection end of the input copper busbar 204 is located at the DC input port 113. The input copper busbar 204 is connected to the source or drain of the capacitor assembly 2 and multiple power transistors 34 through the bridging of the connecting copper busbar. The connecting bracket 202 is connected between the power module 3 and the capacitor assembly 2. The circuit board 203 is arranged above the power module 3 and the capacitor assembly 2.

[0036] The capacitor assembly 2 includes a package housing 21, a first connection bar 23, a second connection bar 24, multiple capacitors 221, and two Y capacitors 222. The package housing 21 has a top surface 212, a bottom surface 213, two connection sidewalls 214, and a wiring sidewall 215. The top surface 212 and the bottom surface 213 are located on opposite sides in the height direction Z, and the two connection sidewalls 214 are located on opposite sides in the width direction Y. The connection sidewalls 214 are connected between the top surface 212 and the bottom surface 213, and the wiring sidewalls 215 are connected between the top surface 212 and the bottom surface 213. Located on one side along the length direction X and connected to the top surface 212, bottom surface 213, and two connecting sidewalls 214, the wiring sidewall 215 is provided with multiple first wiring holes 216 and multiple second wiring holes 217. The multiple first wiring holes 216 and multiple second wiring holes 217 are arranged along the width direction Y, and are staggered along the width direction Y. The multiple first wiring holes 216 and multiple second wiring holes 217 are staggered in the height direction Z. The top surface 212, bottom surface 213, two connecting sidewalls 214, and wiring sidewall 215 form a potting cavity 211. The potting cavity 211 has a potting opening on the other side of the wiring sidewall 215 along the length direction X.

[0037] The first connecting bar 23 is arranged in an arch shape and is used as a positive terminal connecting bar. The first connecting bar 23 is provided with a base plate 231, a first side plate 232, a second side plate 233, a plurality of first connecting pieces 234 and second connecting pieces 235. The base plate 231 extends along the length direction X. The first side plate 232 and the second side plate 233 are located on both sides of the length direction X, respectively. The base plate 231 is connected between the first side plate 232 and the second side plate 233. A plurality of first connecting pieces 234 extend along the length direction X and are provided on the end of the first side plate 232. The second connecting pieces 235 extend along the length direction X and are provided on the end of the second side plate 233. The first connecting pieces 234 and the second connecting pieces 235 extend in opposite directions. The second connecting piece 235 is provided with a plurality of connecting fingers and pins 236 at the connecting fingers.

[0038] The second connecting bar 24 extends along the length direction X and serves as the negative terminal connecting bar. A third connecting piece 241 and a fourth connecting piece 242 are respectively provided at both ends of the second connecting bar 24 along the length direction X. The third connecting piece 241 and the fourth connecting piece 242 extend in opposite directions along the length direction X. The capacitor assembly includes an extension connecting piece 25, which extends along the length direction X and is connected to the fourth connecting piece 242. A second insulating paper 262 is provided between the second connecting piece 235 and the extension connecting piece 25. The extension connecting piece 25 is provided with multiple connecting fingers, and pins 251 are provided at the connecting fingers. The second connecting bar 24 and the base plate 231 are located on opposite sides of the height direction Z. The base plate 231, the first side plate 232, the second side plate 233, and the second connecting bar 24 form a capacitor slot.

[0039] Multiple capacitors 221 and Y capacitors 222 form a capacitor core, which is disposed within a capacitor slot. The first electrode of capacitor 221 is electrically connected to the base plate 231, and the second electrode of capacitor 221 is electrically connected to the second connecting bar 24. The positive and negative terminals of Y capacitor 222 are also electrically connected to the base plate 231 and the second connecting bar 24, respectively. Multiple capacitors 221, the first connecting bar 23, and the second connecting bar 24 are disposed within a potting cavity 211. The base plate 231 is close to the bottom surface 213, and the second connecting bar 24 is close to the top surface 212. Multiple first wiring holes 216 and multiple second wiring holes 217 are all close to the top surface 212. A first connecting piece 234 passes through the first wiring hole 216, and a third connecting piece 234 passes through the third connecting piece 217. Connecting piece 241 passes through second wiring hole 217. Y capacitor 222 is provided with grounding piece 2221, which extends along the length direction X. Wiring side wall 215 is provided with third wiring hole 218, and grounding piece 2221 passes through third wiring hole 218. Grounding piece 2221 and third wiring hole 218 are close to bottom surface 213. Second connecting piece 235 and fourth connecting piece 242 are located outside potting opening. First insulating paper 261 is provided between second connecting piece 235 and fourth connecting piece 242. Potting cavity 211 is filled with potting glue, which wraps around multiple capacitors 221, Y capacitor 222, first connecting bar 23 and second connecting bar 24.

[0040] Two input copper busbars 204 are connected to the first connecting piece 234 and the third connecting piece 241 respectively. The second connecting piece 235 and the extension connecting piece 25 on the other side are connected to the positive input terminal and the negative input terminal of the power tube in the power module 3 respectively. Pins 236 and 251 are soldered to the circuit board 203 respectively.

[0041] Example of a means of transportation:

[0042] The means of transportation includes electrical equipment as described above, and the electrical equipment or the means of transportation has a capacitor assembly as described above. The means of transportation may be new energy electric cars, new energy electric buses, new energy electric freight trucks, new energy electric cleaning vehicles, new energy electric rail transit vehicles, new energy electric air vehicles, new energy electric shipping vehicles, etc.

[0043] As can be seen from the above, by setting the potting cavity of the encapsulation shell, the potting compound inside can wrap the capacitor and the two connecting bars, which not only plays an insulating role, but also improves the thermal conductivity, allowing the waste heat of the capacitor to be efficiently discharged. Furthermore, by setting connecting pieces in the front and rear directions of the two connecting bars, the connecting pieces pass through the wiring holes, and together with the capacitor slot formed by the two connecting bars, the capacitor slot is used to arrange multiple capacitors, making the entire capacitor assembly highly integrated and small in size. The front and rear wiring method optimizes the circuit layout.

Claims

1. A front and back wire-out capacitive assembly, characterized by, include: The encapsulation housing has a top surface, a bottom surface, two connecting sidewalls, and a wiring sidewall. The top surface and the bottom surface are located on opposite sides in the height direction, and the two connecting sidewalls are located on opposite sides in the width direction. The connecting sidewalls connect between the top surface and the bottom surface. The wiring sidewall is located on one side in the length direction and is connected to the top surface, the bottom surface, and the two connecting sidewalls. The wiring sidewall has a plurality of first wiring holes and a plurality of second wiring holes, which are arranged along the width direction. The top surface, the bottom surface, the two connecting sidewalls, and the wiring sidewall form a potting cavity. The potting cavity has a potting opening on the other side of the wiring sidewall based on the length direction. The first connecting row is arranged in an arch shape. The first connecting row is provided with a base plate, a first side plate, a second side plate, a plurality of first connecting pieces and second connecting pieces. The base plate extends along the length direction. The first side plate and the second side plate are respectively located on both sides of the length direction. The base plate is connected between the first side plate and the second side plate. A plurality of first connecting pieces extend along the length direction and are disposed at the ends of the first side plate. The second connecting pieces extend along the length direction and are disposed at the ends of the second side plate. The first connecting pieces and the second connecting pieces extend in opposite directions. The second connecting bar extends along the length direction. A third connecting piece and a fourth connecting piece are respectively provided at both ends of the second connecting bar in the length direction. The third connecting piece and the fourth connecting piece extend in opposite directions along the length direction. The second connecting bar and the base plate are respectively located on both sides of the height direction. The base plate, the first side plate, the second side plate and the second connecting bar form a capacitor groove. Multiple capacitors are disposed within the capacitor slot. The first electrode of each capacitor is electrically connected to the base plate, and the second electrode of each capacitor is electrically connected to the second connecting bar. The multiple capacitors, the first connecting bar, and the second connecting bar are disposed within the potting cavity. The first connecting piece passes through the first wiring hole, the third connecting piece passes through the second wiring hole, and the second connecting piece and the fourth connecting piece are located outside the potting opening. The potting cavity is filled with potting compound.

2. The capacitor assembly according to claim 1, characterized in that: The base plate is close to the bottom surface, the second connecting row is close to the top surface, and the plurality of first wiring holes and the plurality of second wiring holes are all close to the top surface.

3. The capacitor assembly according to claim 2, characterized in that: The plurality of first wiring holes and the plurality of second wiring holes are staggered along the width direction.

4. The capacitor assembly according to claim 3, characterized in that: The plurality of first wiring holes and the plurality of second wiring holes are staggered in the height direction.

5. The capacitor assembly according to claim 1, characterized in that: A first insulating paper is provided between the second connecting piece and the fourth connecting piece.

6. The capacitor assembly according to claim 5, characterized in that: The capacitor assembly includes an extension connecting piece that extends along the length direction and is connected to the fourth connecting piece. A second insulating paper is disposed between the second connecting piece and the extension connecting piece.

7. The capacitor assembly according to any one of claims 1 to 6, characterized in that: The capacitor assembly includes a Y capacitor disposed in the capacitor slot. The Y capacitor is provided with a grounding plate, which extends along the length direction. A third wiring hole is provided on the wiring sidewall, and the grounding plate passes through the third wiring hole.

8. The capacitor assembly according to claim 7, characterized in that: The grounding plate and the third wiring hole are close to the bottom surface.

9. An electrical device, characterised in that It includes a capacitor assembly, a circuit board, and a housing as described in any one of claims 1 to 8, wherein the capacitor assembly and the circuit board are disposed within the housing, and the pins of the first connection bar and the pins of the second connection bar are respectively connected to the circuit board.

10. Vehicle, characterized in that Includes the capacitor assembly as described in any one of claims 1 to 8.

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