CN221103840U - Motor controller and motor using same - Google Patents

Abstract

The utility model discloses a motor controller and a motor applied to the motor controller, which comprises a controller box, a PCB (printed circuit board), a high-power device and an end cover, wherein the end cover is arranged on the controller box, a cavity is formed between the end cover and the controller box, the PCB is arranged in the cavity, and the high-power device is arranged on the PCB, and the motor controller is characterized in that: be equipped with a plurality of little copper bars on the PCB board, a plurality of little copper bars are arranged on the heavy current circuit on the PCB board, be equipped with the encapsulating hole that is used for the encapsulating on the end cover, encapsulating hole and cavity intercommunication, pour into the casting glue through encapsulating hole in to the cavity, form a whole with controller box, the PCB board, high-power device, a plurality of little copper bars and end cover, through increasing little copper bars on the heavy current circuit of PCB board, reduce heavy current circuit resistance and increase current bearing capacity, reduce heavy current circuit and generate heat, and increase PCB board radiating area, improve the radiating effect, the whole heat dissipation ability of reinforcing controller.

Description

Motor controller and motor using same

Technical Field

The utility model relates to a motor controller and a motor using the same.

Background

See patent number 202221286981.7, the patent name is shared shell heat abstractor, motor controller and new energy automobile, and this is shared shell heat abstractor includes plastic drain pan and metal material's top shell, and one side that top shell deviates from the drain pan is used for installing power device. The bottom shell is provided with a containing cavity for containing the capacitor and a first opening communicated with the containing cavity, the containing cavity is used for pouring glue to fill and seal the capacitor, the top shell is directly contacted with the glue poured in the containing cavity for filling and sealing the capacitor through the first opening, the top shell made of metal has good heat conductivity, the capacitor conducts heat through the glue pouring, the heat dissipation efficiency of the capacitor is improved, and a cooling flow passage is arranged in the top shell and used for simultaneously dissipating heat of the capacitor and the power device; the plastic bottom shell can effectively reduce weight and has insulativity, so that the device can relatively balance the volume, the weight and the heat dissipation of the common-shell heat dissipation device, meanwhile, the structure is simple, the assembly is reliable, the safety requirements can be met, the structure only dissipates heat through pouring sealant, the heat dissipation effect is poor, and the problem that the heat dissipation effect is poor due to the fact that the pouring sealant is low in heat dissipation coefficient is solved, when the pouring sealant is used for heat dissipation of a low-voltage heavy-current controller, the problem that the local heat productivity of a heavy-current circuit part and part of components is large and the temperature is increased is solved.

Disclosure of Invention

The utility model aims to provide a motor controller and a motor using the same, which solve the technical problems that in the prior art, the motor controller only transfers heat to a shell through pouring sealant to dissipate heat, the heat dissipation effect is poor, and because the pouring sealant has low heat dissipation coefficient, when the pouring sealant is used for the low-voltage high-current controller, the heat generated by the high-current circuit part and part of components is large locally, the temperature rises, and the heat dissipation effect is poor.

The technical scheme of the utility model is realized as follows:

The utility model provides a motor controller, which comprises a controller box, a PCB (printed circuit board), a high-power device and an end cover, wherein the end cover is arranged on the controller box, a cavity is formed between the end cover and the controller box, the PCB is arranged in the cavity, and the high-power device is arranged on the PCB, and the motor controller is characterized in that: be equipped with a plurality of little copper bars on the PCB board, a plurality of little copper bars are arranged on the big current circuit on the PCB board, are equipped with the encapsulating hole that is used for the encapsulating on the end cover, encapsulating hole and cavity intercommunication, pour into the casting glue into in the cavity through the encapsulating hole, form a whole with controller box, PCB board, high-power device, a plurality of little copper bars and end cover.

The high-power device comprises a plurality of inversion MOS (metal oxide semiconductor) tubes, an electrolytic capacitor and a differential mode inductor, wherein the inversion MOS tubes are covered by pouring sealant, and the electrolytic capacitor and the differential mode inductor are partially covered.

And the inversion MOS tubes are also stuck with first heat dissipation silica gel sheets, and the potting adhesive covers the first heat dissipation silica gel sheets.

The structure of the electrolytic capacitor and the differential-mode inductor exposed outside is respectively stuck with a second heat dissipation silica gel sheet and a third heat dissipation silica gel sheet.

The PCB is provided with the through holes which are convenient for the pouring sealant to pass through, so that the pouring sealant is arranged at the top and the bottom of the PCB.

The outer surface of the end cover is provided with a plurality of heat dissipation ribs.

The end cover is provided with a first mounting lug, and the first mounting lug is provided with a first mounting hole; the controller box is provided with a second mounting lug, and the second mounting lug is provided with a second mounting hole; the first mounting hole and the second mounting hole are corresponding, and the controller box is locked and connected with the end cover by penetrating through the first mounting hole and the second mounting hole through a screw.

The utility model provides a motor, includes stator, rotor, casing and motor controller, its characterized in that: motor controller the motor controller described above.

Compared with the prior art, the utility model has the following advantages:

1. The utility model provides a motor controller, includes controller box, PCB board, high-power device and end cover, and the end cover is installed at the controller box, forms the cavity between end cover and the controller box, and the PCB board is installed in the cavity, and high-power device arranges on the PCB board, its characterized in that: be equipped with a plurality of little copper bars on the PCB board, a plurality of little copper bars are arranged on the heavy current circuit on the PCB board, be equipped with the encapsulating hole that is used for the encapsulating on the end cover, encapsulating hole and cavity intercommunication, pour into the casting glue through encapsulating hole in to the cavity, form a whole with controller box, the PCB board, high-power device, a plurality of little copper bars and end cover, through increasing little copper bars on the heavy current circuit of PCB board, reduce heavy current circuit resistance and increase current bearing capacity, reduce heavy current circuit and generate heat, and increase PCB board radiating area, improve the radiating effect, the whole heat dissipation ability of reinforcing controller.

2. Other advantages of the present utility model are described in detail in the description of the embodiments.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is another perspective view of the present utility model;

FIG. 3 is a partially exploded view of the present utility model;

FIG. 4 is an exploded view of the present utility model;

fig. 5 is a schematic diagram of a PCB structure provided by the present utility model;

FIG. 6 is a front view of the present utility model;

fig. 7 is a cross-sectional view of A-A in fig. 6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

As shown in fig. 1 to 7, the present embodiment provides a motor controller, including a controller box 1, a PCB board 2, a high-power device 3 and an end cover 4, the end cover 4 is mounted on the controller box 1, a cavity 100 is formed between the end cover 4 and the controller box 1, the PCB board 2 is mounted in the cavity 100, the high-power device 3 is arranged on the PCB board 2, and the motor controller is characterized in that: be equipped with a plurality of little copper bars 21 on the PCB board 2, a plurality of little copper bars 21 are arranged on the heavy current circuit on the PCB board 2, be equipped with the encapsulating hole 41 that is used for the encapsulating on the end cover 4, encapsulating hole 41 and cavity 100 intercommunication, pour into pouring sealant 200 into in the cavity 100 through encapsulating hole 41, form a whole with controller box 1, PCB board 2, high-power device 3, a plurality of little copper bars 21 and end cover 4, through increasing little copper bars on the heavy current circuit of PCB board, reduce heavy current circuit resistance increase current bearing capacity, reduce heavy current circuit and generate heat, and increase PCB board radiating area, improve the radiating effect, the whole heat dissipation capacity of reinforcing controller.

The high-power device 3 comprises a plurality of inversion MOS tubes 31, an electrolytic capacitor 32 and a differential mode inductor 33, wherein the inversion MOS tubes 31 are covered by the pouring sealant 200, and the electrolytic capacitor 32 and the differential mode inductor 33 are partially covered.

The first heat dissipation silica gel piece 311 is also attached to the plurality of inversion MOS transistors 31, and the potting adhesive 200 covers the first heat dissipation silica gel piece 311, and enhances the heat dissipation capability by locally arranging heat dissipation silica gel through components with large heating value or a position with local temperature rise on the controller, so that the overall heat dissipation capability of the controller is improved.

The second heat dissipation silica gel piece 321 and the third heat dissipation silica gel piece 331 are respectively stuck on the exposed structure of the electrolytic capacitor 32 and the differential mode inductor 33, the structural arrangement is reasonable, and the heat dissipation capability is enhanced by locally arranging the heat dissipation silica gel at the position of the component with large heat productivity or the local temperature rise on the controller, so that the overall heat dissipation capability of the controller is improved.

The through holes 22 which are convenient for the pouring sealant 200 to pass through are arranged on the PCB 2, so that the pouring sealant 200 is arranged at the top and the bottom of the PCB 2, the structural arrangement is reasonable, and the pouring sealant is convenient to be introduced into the cavity.

The outer surface of the end cover 4 is provided with a plurality of heat dissipation ribs 42, so that the heat dissipation effect is improved.

Embodiment two:

The utility model provides a motor, includes stator, rotor, casing and motor controller, its characterized in that: the motor controller is the motor controller described in the first embodiment.

The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present utility model are included in the scope of the present utility model.

Claims (8)

1. A motor controller, comprising a controller box (1), a PCB board (2), a high-power device (3) and an end cover (4), wherein the end cover (4) is mounted on the controller box (1), a cavity (100) is formed between the end cover (4) and the controller box (1), the PCB board (2) is mounted in the cavity (100), and the high-power device (3) is arranged on the PCB board (2), characterized in that: a plurality of small copper bars (21) are arranged on the PCB board (2), the plurality of small copper bars (21) are arranged on a high-current circuit on the PCB board (2), a glue injection hole (41) for glue injection is provided on the end cover (4), the glue injection hole (41) is communicated with the cavity (100), and a potting glue (200) is injected into the cavity (100) through the glue injection hole (41), so that the controller box (1), the PCB board (2), the high-power device (3), the plurality of small copper bars (21) and the end cover (4) form an integral body. 2. A motor controller according to claim 1, characterized in that: the high-power device (3) includes a plurality of inverter MOS tubes (31), an electrolytic capacitor (32) and a differential mode inductor (33), the plurality of inverter MOS tubes (31) are covered with a potting glue (200), and the electrolytic capacitor (32) and the differential mode inductor (33) are partially covered. 3. A motor controller according to claim 2, characterized in that: a first heat dissipation silicone sheet (311) is also attached to the plurality of inverter MOS tubes (31), and the first heat dissipation silicone sheet (311) is sealed by the potting glue (200). 4. A motor controller according to claim 2, characterized in that: a second heat dissipation silicone sheet (321) and a third heat dissipation silicone sheet (331) are respectively attached to the exposed structures of the electrolytic capacitor (32) and the differential mode inductor (33). 5. A motor controller according to claim 1 or 2 or 3 or 4, characterized in that: a through hole (22) is provided on the PCB board (2) for the potting glue (200) to pass through, so that the potting glue (200) is present on the top and bottom of the PCB board (2). 6. A motor controller according to claim 5, characterized in that a plurality of heat dissipation ribs (42) are provided on the outer surface of the end cover (4). 7. A motor controller according to claim 6, characterized in that: a first mounting lug (43) is provided on the end cover (4), and a first mounting hole (431) is provided on the first mounting lug (43); a second mounting lug (11) is provided on the controller box (1), and a second mounting hole (111) is provided on the second mounting lug (11); the first mounting hole (431) corresponds to the second mounting hole (111), and a screw is passed through the first mounting hole (431) and locked with the second mounting hole (111), so that the controller box (1) and the end cover (4) are locked and connected. 8. A motor, comprising a stator, a rotor, a housing and a motor controller, wherein the motor controller is the motor controller according to any one of claims 1 to 7.