CN213522754U

CN213522754U - Motor controller

Info

Publication number: CN213522754U
Application number: CN202022787645.8U
Authority: CN
Inventors: 张大千; 郑立楷
Original assignee: Shenzhen Faraday Electric Drive Co ltd
Current assignee: Shenzhen Faraday Electric Drive Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-22
Anticipated expiration: 2030-11-25

Abstract

The embodiment of the utility model discloses a motor controller, which comprises a control panel and a drive board, and also comprises a box body, an upper shell which is matched with the box body and is covered on the box body, and a pair of hard connecting terminals, wherein the control panel is arranged in the upper shell, and the drive board is arranged in the box body; the control board is provided with an external signal terminal which is hermetically connected with the upper shell; the pair of hard connecting terminals are respectively and correspondingly arranged on the driving board and the control board. The utility model has simple assembly and is beneficial to realizing automatic production; the sealing reliability of the external control terminal is guaranteed, and meanwhile the high-precision matching and reliable connection of the control board and the hard connecting terminal of the drive board are met.

Description

Motor controller

Technical Field

The utility model relates to a new energy automobile technical field especially relates to a motor controller.

Background

The motor controller comprises a low-voltage control circuit and a high-voltage drive circuit. Wherein the electromagnetic field of the high voltage driving circuit interferes with the low voltage control circuit by radiation, conduction, etc. In order to reduce the influence of the high-voltage driving circuit on the low-voltage control circuit, the high-voltage driving circuit and the low-voltage control circuit are divided into two circuit boards, and a metal plate is used for spacing the two circuit boards from each other, so that an effective shielding means is provided.

The following two problems exist in the current common motor controller:

1) the control board and the drive board are in signal interaction, and the cables are used for interaction, so that automation of the cables in production is difficult to realize. The cable is used for the press/welding of the cable and the metal terminal, the metal terminal and the terminal object are assembled, the finished cable is plugged, and the like, so that the number of failure factors is large, and the production quality problem is easy to occur.

2) Signals between a control board and a drive board are exchanged by using a hard connecting terminal instead of a cable in the prior art, the assembly tolerance of the hard connecting terminal X, Y in the direction is small, and the tolerance of the Z direction is large. Meanwhile, the control board has signal interaction with the drive board, and an external control terminal is needed to realize the signal interaction between the motor controller and the outside (the whole vehicle VCU and the motor). The external signal terminal is matched with a shell of the motor controller to realize a sealing function, and the protection grade of a product IP67 is guaranteed. To ensure the reliability of the seal, a high degree of assembly schedule is also required for the external signal terminals and the housing to be sealed in a mating manner. Namely, two terminals on the same circuit board need to be matched with two other parts with high precision, the two parts have assembly relation, the assembly dimension chain is long, and the assembly tolerance is difficult to control in a small range. It is a troublesome problem to ensure high-precision assembly of both the terminals at the same time.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem that will solve lies in, provides a machine controller to make and promote the assembly precision.

In order to solve the technical problem, an embodiment of the present invention provides a motor controller, which includes a control board and a drive board, and further includes a box body, an upper housing and a pair of hard connection terminals, wherein the upper housing is matched with the box body and covers the box body; the control board is provided with an external signal terminal which is hermetically connected with the upper shell; the pair of hard connecting terminals are respectively and correspondingly arranged on the driving board and the control board.

Furthermore, the periphery of the box body and the periphery of the upper shell are provided with corresponding screw holes, and the box body and the upper shell are fixedly connected in a sealing mode through screws penetrating through the screw holes.

Furthermore, a heat radiation water channel is arranged in the box body.

The utility model has the advantages that: the assembly is simple, and the automatic production is realized; the sealing reliability of the external control terminal is guaranteed, and meanwhile the high-precision matching and reliable connection of the control board and the hard connecting terminal of the drive board are met.

Drawings

Fig. 1 is a structural diagram of a control panel and an upper case according to an embodiment of the present invention.

Fig. 2 is a sectional view of a motor controller according to an embodiment of the present invention.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

In the embodiment of the present invention, if there is directional indication (such as upper, lower, left, right, front, and rear … …) only for explaining the relative position relationship between the components and the motion situation under a certain posture (as shown in the drawing), if the certain posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the first, second, etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 to 2, a motor controller according to an embodiment of the present invention includes a control board 1, a drive board 2, a box 3, an upper housing 4, and a pair of hard connection terminals 5.

The upper shell 4 is matched with the box body 3 and covers the box body 3. The control board 1 is fixedly arranged in the upper shell 4 through a screw 6, and the drive board 2 is arranged in the box body 3; the control board 1 is provided with an external signal terminal 7, and the external signal terminal 7 is hermetically connected with the upper shell 4. The pair of hard connecting terminals 5 are respectively and correspondingly arranged on the driving plate 2 and the control plate 1.

As an implementation mode, the periphery of the box body 3 and the periphery of the upper shell 4 are provided with corresponding screw holes 8, and the box body 3 and the upper shell 4 are fixedly connected in a sealing mode through screws penetrating through the screw holes 8.

As an embodiment, a heat dissipation water channel is provided in the box body 3.

As shown in fig. 1, wherein the hard connection terminals 5 on the control board 1 are connected to the lower drive board 2, the control board 1 is sealed from external signal terminals 7 in cooperation with the upper housing 4. In specific implementation, the driving plate 2 is assembled on the driving module, and the driving module needs water cooling heat dissipation, so the driving module needs to be assembled on the box body 3 with the heat dissipation water channel, and the assembly cannot be changed. The upper shell 4 and the box body 3 are assembled to form a sealed whole body, so that high protection performance of the product is achieved. By widening the sealing surfaces of the upper case 4 and the case 3, reliable sealing can be achieved even in the case where there is a large assembly deviation in the direction X, Y. There can be a large tolerance between the upper case 4 and the case 3. And this tolerance may break the dimensional chain between the two terminal-engaging features on the control board 1.

The utility model solves the matching problem of the two control terminals and the matching parts thereof by changing the size chain; by optimizing the structure, the size in the size chain between the two terminal fitting parts is reduced; the dimensional chain between the two hard-connecting terminal 5 parts is cut off with a large tolerance fit between the box 3 and the upper housing 4.

The specific assembly scheme is as follows:

the control board 1 is positioned and assembled on the upper shell 4 with higher precision so as to ensure that the matching precision of the shell 4 above the external signal terminal 7 on the control board 1 meets the requirement of realizing reliable sealing between the two; the direction guide range of the hard connecting terminal 5X, Y between the control board 1 and the drive board 2 is +/-0.7 mm, and the assembly tolerance is +/-0.1 mm; when the upper shell 4 with the control board 1 installed is assembled, considering that the assembling tolerance between the upper shell 4 and the box body 3 is large, the assembling precision is required to enable the hard connecting terminals 5 on the control board 1 to fall into the guiding range of the hard connecting terminals 5 on the driving board 2, and the pair of hard connecting terminals 5 are used for assembling and positioning the components of the upper shell 4 and the box body 3, namely the positioning precision reaches +/-0.1 mm. In the scheme, the dimensional tolerance of the hard connecting terminal 5 of the driving plate 2 to the sealing surface of the box body 3 and the dimensional tolerance of the hard connecting terminal 5 of the control plate 1 in the assembly of the upper shell 4 to the sealing surface of the upper shell 4 and the box body 3 are absorbed by the assembly tolerance of the upper shell 4 and the box body 3.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A motor controller comprises a control board and a drive board, and is characterized by also comprising a box body, an upper shell matched with the box body and covering the box body, and a pair of hard connecting terminals, wherein the control board is arranged in the upper shell, and the drive board is arranged in the box body; the control board is provided with an external signal terminal which is hermetically connected with the upper shell; the pair of hard connecting terminals are respectively and correspondingly arranged on the driving board and the control board.

2. The motor controller according to claim 1, wherein the case and the upper housing are provided at outer peripheries thereof with corresponding screw holes, and the case and the upper housing are sealingly coupled by screws inserted into the screw holes.

3. The motor controller according to claim 1, wherein a heat radiation water passage is provided in the case.