Insulation packaging mechanism for motor controller

Abstract

The utility model relates to the technical field of controller insulation packaging mechanisms, and discloses a motor controller insulation packaging mechanism, which comprises an aluminum shell, a power brick is arranged in the aluminum shell, an insulation film is attached to the bottom of the power brick, heat conduction silica gel is arranged at the bottom of the insulation film, a negative copper bar is arranged in the power brick, and the negative copper bar is arranged in the aluminum shell. Insulation paper is installed on the surface of the negative copper bar. According to the motor controller insulation packaging mechanism, through the arrangement of the negative copper bar, the positive copper bar and the insulation paper, when the motor controller insulation packaging mechanism is used, the positive copper bar and the negative copper bar of a power brick enable the bottom surface to be smoother and improve the heat dissipation performance in a positive and negative pole lamination laser welding mode, and the welding position of the positive copper bar and the negative copper bar is locally lifted upwards by 0.5 mm; the insulating film can be prevented from being punctured by burrs generated by laser welding, the good insulating effect can be achieved, the high heat dissipation capacity is achieved, and insulation failure caused by the burrs in the laser welding process can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to controller insulation encapsulation mechanism technical field especially relates to a motor controller insulation encapsulation mechanism. BACKGROUND

[0002] In the motor controller design field, the current industry mostly puts power components into injection molding parts for insulation. This scheme not only increases the size, but also affects the heat dissipation performance.

[0003] The existing motor controller insulation encapsulation mechanism bottom adopts laser welding technology to realize the connection between the copper bars. There is an insulation layer between the bottom and the heat dissipation shell. However, during the laser welding process (including soldering), some protruding parts will inevitably be produced. If no special treatment is taken, the protruding parts (spikes) will mechanically wear the underlying insulation layer and cause partial discharge phenomenon, resulting in insulation failure. Therefore, it is a technical problem to be solved to achieve good insulation effect at the bottom, have strong heat dissipation capacity, and avoid insulation failure caused by burrs during the laser welding process. Therefore, a motor controller insulation encapsulation mechanism is proposed. SUMMARY

[0004] (I) Technical problem solved

[0005] The utility model aims at providing a motor controller insulation encapsulation mechanism to solve the problem of achieving good insulation effect at the bottom, having strong heat dissipation capacity, and avoiding insulation failure caused by burrs during the laser welding process.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model realizes the following technical scheme: a motor controller insulation encapsulation mechanism, comprising an aluminum shell, a power brick is installed inside the aluminum shell, an insulation film is attached to the bottom of the power brick, a heat-conducting silicone is arranged at the bottom of the insulation film, a negative copper bar is arranged inside the power brick, an insulation paper is installed on the surface of the negative copper bar, a positive copper bar is arranged on the surface of the insulation paper, and the welding points at the structural positions of the negative copper bar and the positive copper bar are locally lifted upward by 0.5mm distance.

[0008] As a further scheme of the utility model, a copper bar connecting piece is welded on the surface of the positive copper bar, and a capacitor core is installed on the surface of the copper bar connecting piece. The setting of the copper bar connecting piece plays a supporting role for the capacitor core.

[0009] As a further scheme of the utility model, an injection molding shell is fixedly connected to the inner wall of the power brick, and the inside of the injection molding shell is filled with epoxy resin. The setting of the epoxy resin plays an insulation role.

[0010] As a further scheme of the utility model, the injection molding shell bottom is partially protruded by more than 1mm around, the heat-conducting silica gel is filled in the protrusion, through the setting of the heat-conducting silica gel, the effect of rapid heat dissipation is achieved.

[0011] As a further scheme of the utility model, the power brick bottom one side is provided with a local lifting block, the power brick bottom other side is provided with a non-lifting block, the local lifting block is greater than or equal to 0.5mm, through the setting of the local lifting block, the effect of preventing the burr produced by laser welding from piercing the insulating film is achieved.

[0012] As a further scheme of the utility model, the power brick bottom two sides are both provided with positioning grooves, the insulating film is installed in the inside of the positioning groove, through the setting of the positioning groove, the effect of positioning the insulating film is achieved.

[0013] The power brick bottom surface middle part is provided with four welding areas, the edge of the power brick bottom surface bottom one side is provided with a glue flow groove, through the setting of the glue flow groove, the effect of dredging the glue, the glue not being accumulated at the bottom, can flow outwards, reducing the installation stress is achieved.

[0014] (Three) beneficial effects

[0015] The utility model provides a kind of motor controller insulation packaging mechanism, with following beneficial effects:

[0016] The motor controller insulation packaging mechanism, through the setting of negative copper bar, positive copper bar and insulating paper, when using, the positive copper bar and negative copper bar of power brick are by positive and negative two-pole laminated laser welding method, make bottom surface more flat, improve heat dissipation performance, and the welding place of positive copper bar and negative copper bar is locally lifted 0.5mm distance upwards, can prevent the burr produced by laser welding from piercing the insulating film, both can reach good insulation effect, also have very strong heat dissipation capacity, and also can avoid the insulation failure caused by burr in laser welding process. DRAWINGS

[0017] Fig. 1 It is whole structure schematic view of the utility model;

[0018] Fig. 2 It is power brick structure schematic view of the utility model;

[0019] Fig. 3 It is welding area structure schematic view of the utility model;

[0020] Fig. 4 It is bottom arrangement schematic view structure schematic view of the utility model.

[0021] In the figure: 100, power brick; 101, capacitor core; 102, negative copper bar; 103, positive copper bar; 104, insulating paper; 105, injection molding shell; 106, epoxy resin; 107, copper bar connecting piece; 200, insulating film; 300, heat-conducting silicone; 400, aluminum shell; 500, locally raised block; 600, non-raised block; 700, positioning groove; 800, welding area; 900, glue flow groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figs. 1 to 4 The utility model provides a kind of technical scheme: a kind of motor controller insulation packaging mechanism, including aluminum shell 400, power brick 100 is installed in the inside of aluminum shell 400, the bottom of power brick 100 is attached with insulating film 200, the bottom of insulating film 200 is provided with heat-conducting silicone 300, the inside of power brick 100 is provided with negative copper bar 102, negative copper bar 102 is installed with insulating paper 104 on the surface, and the surface of insulating paper 104 is provided with positive copper bar 103, by the setting of negative copper bar 102, positive copper bar 103 and insulating paper 104, when using, the positive copper bar 103 and negative copper bar 102 of power brick 100 are connected by positive and negative two polar laminated laser welding mode, so that bottom surface is more flat, improve heat dissipation performance, and locally upward 0.5mm distance is lifted at the welding place of positive copper bar 103 and negative copper bar 102, can prevent burr produced by laser welding to pierce insulating film 200, can reach good insulation effect, also have very strong heat dissipation capacity, and also can avoid that burr brings insulation failure in the process of laser welding, and welding spot is locally upward 0.5mm distance and lifted at the structure position of negative copper bar 102 and positive copper bar 103;

[0024] The surface of positive copper bar 103 is welded with copper bar connecting piece 107, and capacitor core 101 is installed on the surface of copper bar connecting piece 107, by the setting of copper bar connecting piece 107, the effect of supporting capacitor core 101 is played.

[0025] The inner wall of power brick 100 is fixedly connected with injection molding shell 105, and the inside of injection molding shell 105 is filled with epoxy resin 106, by the setting of epoxy resin 106, the effect of insulation is played.

[0026] The bottom of injection molding shell 105 is locally raised by more than 1mm around, and heat-conducting silicone 300 is filled in the inside of the projection, by the setting of heat-conducting silicone 300, the effect of rapid heat dissipation is played.

[0027] The bottom side of the power brick 100 is provided with a local raised block 500, and the other side of the bottom of the power brick 100 is provided with a non-raised block 600, the local raised block 500 is greater than or equal to 0.5mm, and the local raised block 500 plays a role of preventing burrs generated by laser welding from piercing the insulating film 200;

[0028] Both sides of the bottom of the power brick 100 are provided with positioning grooves 700, and the insulating film 200 is installed in the positioning grooves 700, and the positioning grooves 700 play a role of positioning the insulating film 200.

[0029] The bottom surface of the power brick 100 is provided with four welding areas 800, and the edge of one side of the bottom surface of the power brick 100 is provided with a glue flow groove 900, and the glue flow groove 900 plays a role of dredging glue, preventing the glue from accumulating at the bottom, and allowing the glue to flow outwards, thereby reducing installation stress.

[0030] In the utility model, the working steps of the device are as follows:

[0031] The first step is that the copper bar of the power brick 100 is welded by the positive and negative electrode laminated laser welding method, so that the bottom surface is more flat and the heat dissipation performance is improved;

[0032] The second step is that the bottom surface of the power brick 100 is semi-enclosed injection molding, and the copper bar is directly exposed outside and is in heat dissipation with the heat-conducting silica gel 300, so that the heat dissipation performance is improved;

[0033] The third step is that the bottom of the power brick 100 is locally raised by 0.5mm at the laser welding point part, so as to prevent burrs generated by laser welding from piercing the insulating film 200;

[0034] The fourth step is that the power brick 100 is provided with a positioning structure on the bottom, so as to ensure the positioning of the insulating film 200 during production and improve the safety performance;

[0035] The fifth step is that the periphery of the injection molding part of the power brick 100 is provided with a protruding structure, which is raised by more than 0.5mm than the copper bar at the bottom, so as to ensure the insulation distance between the brick and the aluminum base shell and allow the heat-conducting glue to be filled;

[0036] The sixth step is that the bottom of the power brick 100 is locally raised by less than one week, and the purpose is to increase the flowability of the glue when filling the heat-conducting silicone grease, so that the glue does not accumulate at the bottom and can flow outwards, thereby reducing the installation stress.

[0037] It should be noted that the device structure and the drawings of the present application mainly describe the principle of the present application, and the setting of the power mechanism, power supply system and control system of the device is not completely described, and under the premise of understanding the principle of the above-mentioned application by the person skilled in the art, the specific of the power mechanism, power supply system and control system can be clearly known, and the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art.

[0038] The standard parts used can be purchased from the market, and can be ordered according to the description and drawings, the specific connection mode of each part adopts the conventional screw, rivet, welding and other conventional means in the prior art, the mechanical, parts and equipment adopt the conventional type in the prior art, and the components known by the person skilled in the art, the structure and principle thereof can be known by the technical manual or by the conventional experimental method.

[0039] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An electric machine controller insulation encapsulation mechanism comprising an aluminum housing (400), characterized by: The inside of the aluminum shell (400) is mounted with a power brick (100), the bottom of the power brick (100) is attached with an insulating film (200), the bottom of the insulating film (200) is provided with heat-conducting silica gel (300), the inside of the power brick (100) is provided with a negative copper bar (102), the surface of the negative copper bar (102) is mounted with insulating paper (104), the surface of the insulating paper (104) is provided with a positive copper bar (103), and the welding points at the structural positions of the negative copper bar (102) and the positive copper bar (103) are locally lifted upward by a distance of 0.5mm.

2. An electric machine controller insulating packaging mechanism according to claim 1, characterized in that: The surface of the positive copper bar (103) is welded with a copper bar connecting piece (107), and the surface of the copper bar connecting piece (107) is mounted with a capacitor core (101).

3. An electric machine controller insulating packaging mechanism according to claim 1, characterized in that: The inner wall of the power brick (100) is fixedly connected with an injection molded shell (105), and the inside of the injection molded shell (105) is filled with epoxy resin (106).

4. An electric machine controller insulating packaging mechanism according to claim 3, characterized in that: The bottom of the injection molded shell (105) is locally protruded by more than 1mm around, and the heat-conducting silica gel (300) is filled in the inside of the protrusion.

5. An electric machine controller insulating packaging mechanism according to claim 1, characterized in that: One side of the bottom of the power brick (100) is provided with a local lifting block (500), and the other side of the bottom of the power brick (100) is provided with a non-lifting block (600), and the local lifting block (500) is greater than or equal to 0.5mm.

6. An electric machine controller insulating packaging mechanism according to claim 1, characterized in that: Both sides of the bottom of the power brick (100) are provided with positioning grooves (700), and the insulating film (200) is mounted in the inside of the positioning grooves (700).

7. An electric machine controller insulating packaging mechanism according to claim 1, characterized in that: Four welding areas (800) are formed in the middle of the bottom surface of the power brick (100), and a glue flowing groove (900) is formed in the edge of one side of the bottom surface of the power brick (100).

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