CN212677454U

CN212677454U - Motor controller with bus capacitor connected with aluminum substrate or copper substrate

Info

Publication number: CN212677454U
Application number: CN202022006745.2U
Authority: CN
Inventors: 何林; 郭成美; 高毕江
Original assignee: Chongqing Lihua Gentian Technology Co ltd
Current assignee: Chongqing Lihua Gentian Technology Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-03-09
Anticipated expiration: 2030-09-14

Abstract

The utility model provides a motor controller that bus-bar capacitance and aluminium base board or copper base plate are connected, including the power module who is used for drive controller, power module includes aluminium base board or copper base board, a plurality of bus-bar capacitance and a plurality of power device, aluminium base board or copper base board's front is equipped with anodal copper foil wiring layer and negative pole copper foil wiring layer, bus-bar capacitance and power device lug weld are on aluminium base board or copper base board, and bus-bar capacitance and power device's positive pole and anodal copper foil wiring layer welded connection, bus-bar capacitance and power device's negative pole and negative pole copper foil wiring layer welded connection. According to the bus capacitor and power device, the bus capacitor and the power device are directly welded on the aluminum substrate or the copper substrate, and the positive and negative electrodes of the bus capacitor and the power device are respectively welded with the positive and negative copper foil wiring layers on the aluminum substrate or the copper substrate, so that peaks caused by stray inductance of busbars are reduced, the power device with a lower withstand voltage level can be selected, and the safety coefficient of the power device and the reliability of the driving controller are improved.

Description

Motor controller with bus capacitor connected with aluminum substrate or copper substrate

Technical Field

The utility model relates to a motor drive control system technical field, concretely relates to bus-bar capacitor and aluminium base board or copper base plate connected's machine controller.

Background

A hybrid vehicle is a vehicle in which a vehicle drive system is combined from two or more individual drive systems that can be operated simultaneously, and the vehicle drive power is provided by the individual drive systems individually or together depending on the actual vehicle driving state. The hybrid vehicle generally refers to a gasoline-electric hybrid vehicle, i.e., a conventional internal combustion engine (a diesel engine or a gasoline engine) and an electric motor are used as power sources, and some engines are modified to use other alternative fuels, such as compressed natural gas, propane and ethanol fuel.

The utility model discloses an inventor discovers through the research, current hybrid fuel vehicle's actuating system's machine controller bus-bar electric capacity adopts the generating line copper bar to be connected with power module, this kind of connection structure technology is complicated, stray inductance is great, this stray inductance can produce a voltage peak stack on power device when power device on power module turns off, because the existence fragile power device of this peak, therefore need improve power device's withstand voltage level and promote the reliability, therefore urgent need to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a motor controller to current drive system who thoughtlessly moves fuel car's actuating system's electric machine controller bus-bar capacitance adopts the generating line copper bar to be connected with power module, and this kind of connection structure technology is complicated, stray inductance is great, and this stray inductance can produce a voltage peak stack on power device when power device on power module turns off, because the existence fragile power device of this peak, therefore need improve the technical problem that power device withstand voltage level promoted the reliability, the utility model provides a bus-bar capacitance and aluminium base board or copper base plate are connected.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a motor controller with a bus capacitor connected with an aluminum substrate or a copper substrate comprises a power module used for driving the controller, wherein the power module comprises the aluminum substrate or the copper substrate, a plurality of bus capacitors and a plurality of power devices, an anode copper foil wiring layer and a cathode copper foil wiring layer are arranged on the front surface of the aluminum substrate or the copper substrate, the bus capacitors and the power devices are directly welded on the aluminum substrate or the copper substrate, the anodes of the bus capacitors and the power devices are welded with the anode copper foil wiring layer, and the cathodes of the bus capacitors and the power devices are welded with the cathode copper foil wiring layer.

Compared with the prior art, the utility model provides a bus-bar capacitance and aluminium base board or copper base plate connected's machine controller, with bus-bar capacitance and power device lug weld on aluminium base board or copper base board, and bus-bar capacitance and power device's anodal and aluminium base board or copper base board on anodal copper foil wiring layer welded connection, bus-bar capacitance and power device's negative pole and aluminium base board or copper base board on negative pole copper foil wiring layer welded connection, from this bus-bar capacitance is close with power device distance, the copper bar has been reduced, the peak that the stray inductance of generating line copper bar brought has been reduced, thereby can select the power device of lower withstand voltage level, when improving power device factor of safety, the reliability of drive module power device has still been improved.

Further, a plurality of positive via holes and a plurality of negative via holes are formed in the aluminum substrate or the copper substrate, the plurality of bus capacitors are arranged on the back surface of the aluminum substrate or the copper substrate, the positive electrodes of the bus capacitors penetrate through the positive via holes of the aluminum substrate or the copper substrate to be welded with copper bars welded on the positive copper foil wiring layer, the negative electrodes of the bus capacitors penetrate through the negative via holes of the aluminum substrate or the copper substrate to be directly welded with the negative copper foil wiring layer, the plurality of power devices are arranged on the front surface of the aluminum substrate or the copper substrate, the positive electrodes of the power devices are directly welded with the positive copper foil wiring layer, and the negative electrodes of the power devices are directly welded with.

Furthermore, an insulating sleeve is sleeved on the positive lead of the bus capacitor in a penetrating manner.

Further, the positive lead of the bus capacitor is in clearance fit with the positive via hole.

Drawings

Fig. 1 is a schematic diagram of a front structure of a power module provided by the present invention.

Fig. 2 is a schematic diagram of a back structure of a power module according to the present invention.

In the figure, 1, a power module; 11. an aluminum substrate or a copper substrate; 111. a positive via hole; 112. a negative via hole; 12. a bus capacitor; 121. a positive electrode; 122. a negative electrode; 13. a power device; 14. copper bars are arranged.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1 and fig. 2, the utility model provides a bus capacitor and aluminium base board or copper base plate connected's machine controller, including the power module 1 that is used for driving controller, power module 1 includes aluminium base board or copper base plate 11, a plurality of bus capacitor 12 and a plurality of power device 13, aluminium base board or copper base plate 11's front is equipped with anodal copper foil wiring layer and negative pole copper foil wiring layer, bus capacitor 12 and power device 13 lug weld on aluminium base board or copper base plate 11, just bus capacitor 12 and power device 13's anodal and anodal copper foil wiring layer welded connection, bus capacitor 12 and power device 13's negative pole and negative pole copper foil wiring layer welded connection.

As a specific embodiment, referring to fig. 1 and fig. 2, a plurality of positive vias 111 and a plurality of negative vias 112 are disposed on the aluminum substrate or the copper substrate 11, the plurality of bus capacitors 12 are arranged on the back surface of the aluminum substrate or the copper substrate 11, the positive electrodes 121 of the bus capacitors 12 pass through the positive through holes 111 of the aluminum substrate or the copper substrate 11 to be welded with the copper bars 14 welded on the positive copper foil wiring layer, the negative electrode 122 of the bus capacitor 12 passes through the negative via hole 112 of the aluminum substrate or the copper substrate 11 to be directly welded with the negative copper foil wiring layer, the power devices 13 are arranged on the front surface of the aluminum substrate or the copper substrate 11, the positive electrode of the power device 13 is directly welded with the positive copper foil wiring layer, the negative electrode of the power device 13 is directly welded with the negative copper foil wiring layer, therefore, the bus capacitor 12 and the power device 13 are directly welded on the aluminum substrate or the copper substrate 11.

As an embodiment, an insulating sleeve (not shown) is threaded on the positive lead of the bus capacitor 12, so that the positive lead of the bus capacitor 12 and the negative copper foil wiring layer on the aluminum substrate or the copper substrate 11 can be insulated and isolated, thereby improving the reliability of the driving controller.

As another specific embodiment, the positive lead of the bus capacitor 12 is in clearance fit with the positive via 111, that is, the positive via 111 is enlarged to achieve insulation and isolation between the positive lead of the bus capacitor 12 and the negative copper foil wiring layer on the aluminum substrate or the copper substrate 11, which can also improve the reliability of the driving controller.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A motor controller with bus capacitors connected with an aluminum substrate or a copper substrate comprises a power module (1) used for driving the controller, and is characterized in that the power module (1) comprises the aluminum substrate or the copper substrate (11), a plurality of bus capacitors (12) and a plurality of power devices (13), an anode copper foil wiring layer and a cathode copper foil wiring layer are arranged on the front surface of the aluminum substrate or the copper substrate (11), the bus capacitors (12) and the power devices (13) are directly welded on the aluminum substrate or the copper substrate (11), the anodes of the bus capacitors (12) and the power devices (13) are welded with the anode copper foil wiring layer, and the cathodes of the bus capacitors (12) and the power devices (13) are welded with the cathode copper foil wiring layer.

2. The motor controller with bus capacitors connected to an aluminum substrate or a copper substrate according to claim 1, wherein a plurality of positive vias (111) and a plurality of negative vias (112) are disposed on the aluminum substrate or the copper substrate (11), the plurality of bus capacitors (12) are disposed on the back of the aluminum substrate or the copper substrate (11), the positive electrode (121) of the bus capacitor (12) is welded to the copper bar (14) welded on the positive copper foil wiring layer through the positive via (111) of the aluminum substrate or the copper substrate (11), the negative electrode (122) of the bus capacitor (12) is welded directly to the negative copper foil wiring layer through the negative via (112) of the aluminum substrate or the copper substrate (11), the plurality of power devices (13) are disposed on the front of the aluminum substrate or the copper substrate (11), and the positive electrode of the power device (13) is welded directly to the positive copper foil wiring layer, and the negative electrode of the power device (13) is directly welded with the negative copper foil wiring layer.

3. The motor controller for connecting the bus capacitor with the aluminum substrate or the copper substrate as claimed in claim 2, wherein an insulating sleeve is sleeved on the positive lead of the bus capacitor (12).

4. The motor controller with the bus capacitor connected with the aluminum substrate or the copper substrate as claimed in claim 2, wherein the positive lead of the bus capacitor (12) is in clearance fit with the positive via hole (111).