An integrated new energy vehicle motor controller power brick

Abstract

The present invention provides an integrated new energy vehicle motor controller power brick, which includes a thin film capacitor, wherein the thin film capacitor includes a capacitor body and a plurality of magnetic rings, wherein the input end of the capacitor body moves through the plurality of magnetic rings in sequence; a track is provided on the capacitor body, wherein the magnetic ring slides with the track and is positioned perpendicular to the sliding direction, and the magnetic ring is fixed to the capacitor body or the track by an adhesive after being adjusted to a preset position on the track. This solution uses the track to guide and limit the magnetic ring, which can facilitate the installation of the magnetic ring, and ensure the relative position accuracy between the input end of the capacitor body and the magnetic ring, and avoid the contact between the magnetic ring and the input end, thereby affecting the performance of the input end; compared with the prior art of installing the magnetic ring through a magnetic ring support, the track occupies a small space, and the number of the magnetic rings can be increased as needed, and at the same time, the volume of the device will not be increased due to the need to add additional magnetic ring supports.

Description

Technical Field

[0001] The present invention relates to the technical field of motor controllers, and in particular to an integrated new energy vehicle motor controller power brick. Background Art

[0002] New energy vehicles refer to vehicles that use non-traditional fuels as a power source or use new power systems. Among them, electric vehicles (EVs) are an important part of new energy vehicles, and motor controllers are an important part of the electronic control system. Their function is to convert the battery's electrical energy into mechanical energy to drive the electric vehicle. The motor controller is mainly composed of a power module and a drive circuit. The power module is the core of the motor controller, and its main function is to achieve power conversion and control of electrical energy.

[0003] The patent with publication number CN114070167A discloses a highly integrated electrical device for a high-power motor controller. The magnetic ring assembly in this scheme includes a magnetic ring support and a magnetic ring. The magnetic ring support is provided with a waist-shaped groove, and the waist-shaped groove is provided with a terminal outlet hole. The magnetic ring is sealed in the waist-shaped groove.

[0004] The magnetic ring support in the above solution can only install a fixed number of magnetic rings. When the number of magnetic rings needs to be increased to improve the EMC (electromagnetic compatibility) performance, the number or size of the magnetic ring supports needs to be increased accordingly, thereby increasing the overall volume of the device. Summary of the invention

[0005] Based on the above-mentioned problems existing in the prior art, the present invention aims to solve the technical problem that the highly integrated electrical device for high-power motor controller in the prior art can only be installed with a fixed number of magnetic rings, and when the number of magnetic rings needs to be increased to improve the EMC performance, the number or size of the magnetic ring supports needs to be increased accordingly, thereby increasing the overall volume of the device.

[0006] The present invention provides an integrated new energy vehicle motor controller power brick, which includes:

[0007] A film capacitor comprises a capacitor body and a plurality of magnetic rings, wherein the input end of the capacitor body moves through the plurality of magnetic rings in sequence;

[0008] The capacitor body is provided with a track, the magnetic ring is slidably matched with the track and positioned perpendicular to the sliding direction, and the magnetic ring is fixed to the capacitor body or the track after being adjusted to a preset position on the track.

[0009] According to one embodiment of the present invention, the integrated new energy vehicle motor controller power brick also includes a power module, a three-phase output copper busbar and a drive board. The power module and the three-phase output copper busbar can be detachably arranged on the capacitor body, and the three-phase output copper busbar is electrically connected to the output end of the power module; the drive board can be detachably arranged on the capacitor body or the power module to provide a control signal for the power module.

[0010] According to an embodiment of the present invention, the integrated new energy vehicle motor controller power brick further includes a current sensor with a plurality of PIN pins, the current sensor is detachably fixedly arranged on the three-phase output copper bus, and the driving board is provided with a plurality of jacks corresponding to the PIN pins one by one;

[0011] The three-phase output copper busbar is slidably matched with the track and positioned perpendicular to the sliding direction. When the three-phase output copper busbar is slidably matched with the track, the jack is always located in the extension direction of the corresponding PIN needle.

[0012] According to one embodiment of the present invention, the three-phase output copper busbar includes a mounting base and three copper pillars fixed on the mounting base; the mounting base is slidably matched with the track and positioned perpendicular to the sliding direction, and the three copper pillars are respectively fixed and electrically connected to the three-phase output of the power module.

[0013] According to an embodiment of the present invention, the PIN pin of the current sensor passes through the corresponding jack and is welded to the driving board.

[0014] According to an embodiment of the present invention, a cooling cavity with an opening is provided on the surface of the capacitor body, and the power module is sealed and installed on the end surface where the opening of the cooling cavity is located;

[0015] The capacitor body is also provided with a medium inlet and a medium outlet which are communicated with the cooling cavity.

[0016] According to an embodiment of the present invention, the power module includes a power module body and a heat dissipation column fixed on the power module body, and the heat dissipation column extends into the interior of the cooling cavity.

[0017] According to an embodiment of the present invention, two tracks are arranged side by side on the capacitor body, and a receiving groove for receiving the magnetic ring is provided on the capacitor body between the two tracks.

[0018] The beneficial effects of the present invention are:

[0019] In an integrated new energy vehicle motor controller power brick provided by the present invention, the track is used to guide and limit the magnetic ring, which can facilitate the installation of the magnetic ring and ensure the relative position accuracy between the input end of the capacitor body and the magnetic ring, avoiding the contact between the magnetic ring and the input end and thus affecting the performance of the input end; compared with the prior art of installing the magnetic ring through a magnetic ring support, the track occupies a small space, and the number of the magnetic rings can be increased as needed, and at the same time, the volume of the device will not be increased due to the need to add additional magnetic ring supports. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of an integrated new energy vehicle motor controller power brick provided by an embodiment of the present invention;

[0022] Figure 2 It is a bottom view of an integrated new energy vehicle motor controller power brick provided by an embodiment of the present invention;

[0023] Figure 3 It is a left view of an integrated new energy vehicle motor controller power brick provided by an embodiment of the present invention;

[0024] Figure 4 yes Figure 3 Schematic diagram of the middle BB section;

[0025] Figure markings: 1-film capacitor; 11-capacitor body; 111-input end; 112-track; 113-accommodating groove; 101-cooling chamber; 102-medium flow inlet; 103-medium flow outlet; 12-magnetic ring; 2-power module; 21-power module body; 22-heat dissipation column; 3-three-phase output copper busbar; 31-mounting seat; 32-copper column; 4-driving board; 5-current sensor; 50-PIN needle. DETAILED DESCRIPTION

[0026] The following descriptions of the embodiments refer to the attached drawings to illustrate specific embodiments in which the present invention can be implemented.

[0027] The present invention provides an integrated new energy vehicle motor controller power brick, the structure of which is as follows: Figure 1-Figure 3As shown, it includes a thin film capacitor 1, the thin film capacitor 1 includes a capacitor body 11 and a plurality of magnetic rings 12, and an input end 111 of the capacitor body 11 moves through the plurality of magnetic rings 12 in sequence;

[0028] The capacitor body 11 is provided with a track 112, and the magnetic ring 12 is slidably matched with the track 112 and positioned perpendicular to the sliding direction. After the magnetic ring 12 is adjusted to a preset position on the track 112, it is fixed to the capacitor body 11 or the track 112 by adhesive.

[0029] In this solution, by providing a track 112 on the capacitor body 11, when the number of the magnetic rings 12 needs to be increased to be compatible with different EMC performances, it is only necessary to install the magnetic rings 12 to be added on the track 112. Compared with the increase in the overall volume of the device caused by the corresponding increase in the number or size of the magnetic ring supports when installing the magnetic rings through the magnetic ring supports in the prior art, this solution increases the overall volume of the device less when adding magnetic rings (the increased volume is only the volume of the increased magnetic rings 12); at the same time, since the input end 111 of the capacitor body 11 and the magnetic ring 12 are generally in a non-contact state (a small gap is left between the two), and the track 112 can guide and limit the magnetic ring 12, it can avoid the magnetic ring 12 from contacting the input end 111 of the capacitor body 11, thereby affecting the performance of the input end 111; specifically, when the magnetic ring 12 contacts the input end 111, the magnetic ring 12 will transmit vibration to the input end 111, thereby shortening the life of the input end 111.

[0030] like Figure 2 The figure shows a top view of the integrated new energy vehicle motor controller power brick in an embodiment of the present invention. Specifically, two tracks 112 are arranged side by side on the capacitor body 11, and a receiving groove 113 for accommodating the magnetic ring 12 is provided on the capacitor body 11 and between the two tracks 112. The receiving groove 13 can protect the magnetic ring 12 placed therein to prevent the magnetic ring 12 from being damaged by collision when exposed to the outside.

[0031] Please continue to refer to Figure 1 and Figure 3 In an embodiment of the present invention, the integrated new energy vehicle motor controller power brick also includes a power module 2, a three-phase output copper busbar 3 and a drive board 4. The power module 2 and the three-phase output copper busbar 3 can be detachably arranged on the capacitor body 11, and the three-phase output copper busbar 3 is electrically connected to the output end of the power module 2; the drive board 4 is detachably arranged on the capacitor body 11 or the power module 2 to provide a control signal for the power module 2.

[0032] Furthermore, the integrated new energy vehicle motor controller power brick also includes a current sensor 5 with a plurality of PIN pins 50, the current sensor 5 is detachably fixedly arranged on the three-phase output copper bus 3, and the driving board 4 is provided with a plurality of jacks (not shown in the figure) corresponding to the PIN pins 50 one by one;

[0033] The three-phase output copper busbar 3 is slidably matched with the track 112 and positioned perpendicular to the sliding direction. When the three-phase output copper busbar 3 is slidably matched with the track 112 , the jack is always located in the extension direction of the corresponding PIN needle 50 .

[0034] It can be understood that the three-phase output copper busbar 3 and the track 112 are slidably matched, so as to realize the pre-positioning of the three-phase output copper busbar 3 and enable the PIN needle 50 of the current sensor 5 to be quickly aligned with the jack on the driving board 4; and the three-phase output copper busbar 3 and the magnetic ring 12 share the track 112, which can simplify the structure of the integrated new energy vehicle motor controller power brick and make the overall structure more compact.

[0035] Specifically, the three-phase output copper bar 3 includes a mounting seat 31 and three copper pillars 32 fixed on the mounting seat 31; the mounting seat 31 is slidably matched with the track 112 and positioned perpendicular to the sliding direction, and the three copper pillars 32 are respectively fixed and electrically connected to the three-phase output of the power module 2. Preferably, the three copper pillars 32 are respectively fixedly connected to the three-phase output of the power module 2 by screws.

[0036] Furthermore, the PIN pin 50 of the current sensor 5 passes through the corresponding jack and is welded to the driving board 4. Compared with the PIN pin 50 only being plugged into the corresponding jack, the welding stability is better, and the problem of loose contact or poor contact between the PIN pin 50 and the corresponding jack can be avoided.

[0037] In the embodiment of the present invention, a cooling cavity 101 with an opening is provided on the surface of the capacitor body 11, and the power module 2 is sealed and installed on the end surface where the opening of the cooling cavity 101 is located;

[0038] The capacitor body 11 is also provided with a medium inlet 102 and a medium outlet 103 which are communicated with the cooling cavity 101 .

[0039] It can be understood that by opening the cooling cavity 101 with an opening on the surface of the capacitor body 11, on the one hand, the capacitor body 11 can be cooled, and on the other hand, the power module 2 is sealed and installed at the end of the opening of the cooling cavity 101, which can also cool the power module 2, further improving the overall structural compactness of the device.

[0040] like Figure 4 Shown Figure 3 In the BB cross-sectional diagram, further, the power module 2 includes a power module body 21 and a heat dissipation column 22 fixed on the power module body 21, and the heat dissipation column 22 extends into the interior of the cooling cavity 101, which can improve the cooling effect of the power module body 21.

[0041] In order to facilitate the understanding of this scheme, the following Figure 1-Figure 4 The working principle of the embodiment of the present invention is described in detail:

[0042] When installing the magnetic ring 12, the magnetic ring 12 to be installed is slidably matched with the track 112 (the input end 111 of the capacitor body 11 is arranged parallel to the track 112, and when slidingly matched, the input end 111 just moves through the magnetic ring 12). After the magnetic ring 12 is installed to the preset position, it is fixed to the track 112 or the receiving groove 113 by adhesive.

[0043] When installing the three-phase output copper busbar 3, firstly slide the mounting base 31 into engagement with the track 112, and after the PIN needle 50 of the current sensor 5 is plugged into the corresponding socket on the driving board 4, the three copper pillars 32 are fixedly connected to the three-phase output of the power module 2 by screws respectively (if the copper pillar 32 and the output of the power module 2 cannot be accurately aligned, the copper pillar 32 can be bent to fine-tune its shape), and finally, the PIN needle 50 is welded and fixed to the driving board 4.

[0044] Compared with the prior art, in an integrated new energy vehicle motor controller power brick provided by the present invention, the track 112 is used to guide and limit the magnetic ring 12, which can facilitate the installation of the magnetic ring 12 and ensure the relative position accuracy between the input end 111 of the capacitor body 11 and the magnetic ring 12, thereby avoiding the contact between the magnetic ring 12 and the input end 111 and affecting the performance of the input end 111; compared with the prior art of installing the magnetic ring through a magnetic ring support, the track 112 occupies a small space, and the number of the magnetic rings 12 can be increased as needed to be compatible with different EMC performance requirements, and at the same time, the volume of the device will not be increased due to the need to add additional magnetic ring supports.

[0045] It should be noted that although the present invention is disclosed as above by specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. An integrated new energy vehicle motor controller power brick, characterized in that: include: A thin film capacitor (1) comprises a capacitor body (11) and a plurality of magnetic rings (12), wherein an input end (111) of the capacitor body (11) moves through the plurality of magnetic rings (12) in sequence; A track (112) is provided on the capacitor body (11); the magnetic ring (12) is slidably matched with the track (112) and positioned perpendicular to the sliding direction; and the magnetic ring (12) is fixed to the capacitor body (11) or the track (112) after being adjusted to a preset position on the track (112).

2. The integrated new energy vehicle motor controller power brick according to claim 1, characterized in that: The invention also comprises a power module (2), a three-phase output copper busbar (3) and a drive board (4); the power module (2) and the three-phase output copper busbar (3) are both detachably arranged on the capacitor body (11), and the three-phase output copper busbar (3) is electrically connected to the output end of the power module (2); the drive board (4) is detachably arranged on the capacitor body (11) or the power module (2) to provide a control signal for the power module (2).

3. The integrated new energy vehicle motor controller power brick according to claim 2, characterized in that: It also includes a current sensor (5) with a plurality of PIN pins (50), wherein the current sensor (5) is detachably fixedly arranged on the three-phase output copper busbar (3), and the driving board (4) is provided with a plurality of jacks corresponding one to one with the PIN pins (50); The three-phase output copper busbar (3) is slidably matched with the track (112) and is positioned perpendicular to the sliding direction; and when the three-phase output copper busbar (3) is slidably matched with the track (112), the jack is always located in the extension direction of the corresponding PIN needle (50).

4. The integrated new energy vehicle motor controller power brick according to claim 3 is characterized in that: The three-phase output copper busbar (3) comprises a mounting seat (31) and three copper pillars (32) fixed on the mounting seat (31); the mounting seat (31) is slidably matched with the track (112) and positioned perpendicular to the sliding direction, and the three copper pillars (32) are respectively fixed and electrically connected to the three-phase output of the power module (2).

5. The integrated new energy vehicle motor controller power brick according to claim 3 is characterized in that: The PIN pin (50) of the current sensor (5) passes through the corresponding jack and is welded to the driving board (4).

6. The integrated new energy vehicle motor controller power brick according to claim 2, characterized in that: A cooling cavity (101) with an opening is provided on the surface of the capacitor body (11), and the power module (2) is sealed and mounted on the end surface where the opening of the cooling cavity (101) is located; The capacitor body (11) is also provided with a medium inlet (102) and a medium outlet (103) respectively connected to the cooling cavity (101).

7. The integrated new energy vehicle motor controller power brick according to claim 6, characterized in that: The power module (2) comprises a power module body (21) and a heat dissipation column (22) fixed on the power module body (21), and the heat dissipation column (22) extends into the interior of the cooling cavity (101).

8. The integrated new energy vehicle motor controller power brick according to claim 1, characterized in that: Two tracks (112) are arranged side by side on the capacitor body (11), and a receiving groove (113) for receiving the magnetic ring (12) is provided between the two tracks (112) on the capacitor body (11).

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