Controller of electric bicycle

Abstract

The utility model discloses a controller of an electric bicycle. The base body is provided with a containing cavity and a fixing hole, the cover body is connected with the base body and seals one end of the containing cavity, the circuit board is located in the containing cavity, one side of the circuit board abuts against and makes contact with the base body, the electrical assembly is arranged on the other side of the circuit board, and the connecting pieces penetrate through the circuit board and stretch into the fixing hole to be fixed. The utility model has the advantages that the heat generated by the MOS tube can be quickly dissipated through the seat body, the heat dissipation effect is good, the size is small, and the structure and the installation process of the controller are optimized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electric bicycle control field, especially relate to a controller of electric bicycle. BACKGROUND

[0002] In prior art, electric bicycle needs to be equipped with controller, and the commonly used controller uses straight insertion type MOS tube, its volume is bigger, when installing on circuit board, it occupies very big height space, and straight insertion type MOS tube needs to be arranged close to the side wall of controller, increases the equipment complexity of controller. In addition, the commonly used straight insertion type MOS tube needs manual welding, and the unqualified rate of manual welding is higher, which invisibly greatly increases the labor cost and time cost. The existing straight insertion type MOS tube has big volume, complicated assembly process and low production efficiency, and cannot satisfy more demands.

[0003] At present, the controller can also use a patch type MOS tube, and especially in a high-power controller (i.e. capable of controlling a high-power motor), a MOS tube adopting a Toll (a kind of surface mount type package) package has higher requirements for heat dissipation performance and structure. Therefore, improvement is needed. SUMMARY

[0004] The utility model aims at providing a controller of electric bicycle, which can be applied to an electric-assisted bicycle, so that the heat generated by the MOS tube can be quickly dissipated through the seat body, the heat dissipation effect is good, the volume is small, and the structure and installation process of the controller are optimized.

[0005] The first technical solution of the utility model is a controller of electric bicycle, which comprises a seat body with a containing cavity and a fixing hole, a cover body connected with the seat body and closing one end of the containing cavity, a circuit board located in the containing cavity and abutting against the seat body on one side, an electrical component arranged on the other side of the circuit board, and a plurality of connecting pieces penetrating through the circuit board and extending into the fixing hole.

[0006] On the basis of the above technical solution, the following subsidiary technical solutions are further included.

[0007] The seat body, the cover body and the connecting pieces are all made of metal material.

[0008] The electrical component comprises three-phase terminals, power supply terminals and a MOS tube, wherein the MOS tube is a patch type chip.

[0009] The seat body further comprises an integrally formed protrusion, and the circuit board has a positioning hole matched with the protrusion.

[0010] The seat body has an opening communicating with the containing cavity.

[0011] It further comprises a rubber piece for closing the opening.

[0012] The connecting piece comprises a head at one end, a tail at the other end, and a middle part between the head and the tail, wherein the head and the tail are circular in cross-section, and the middle part is polygonal in cross-section.

[0013] The bottom end of the seat body comprises an upper end and a lower end, wherein the upper end is a flat surface and is provided with a plurality of fixing holes and a plurality of convex points formed integrally.

[0014] The lower end is provided with a plurality of heat dissipation convex ribs and a heat dissipation groove between adjacent two heat dissipation convex ribs.

[0015] The upper end of the seat body is in abutting contact with the circuit board, and the heat dissipation convex ribs conduct the heat of the circuit board outward.

[0016] The utility model discloses the advantages: the utility model discloses the heat that MOS pipe produces can be quickly dissipated through the seat body, and its heat dissipation effect is good, and the volume is smaller, and the structure, process etc. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 It is an exploded view of the embodiment of the present application from a first perspective;

[0019] Figure 2 It is an exploded view of the embodiment of the present application from a second perspective;

[0020] Figure 3 It is a sectional view of the present application;

[0021] Figure 4 It is a partial perspective view of the present application, wherein the cover is removed;

[0022] Figure 5 It is a perspective view of the present application. DETAILED DESCRIPTION

[0023] In the following, various embodiments of the present disclosure will be described more fully. The present disclosure can have various embodiments, and adjustments and changes can be made therein. However, it should be understood that there is no intention to limit the protection scope of the present disclosure to the specific embodiments disclosed herein, but the present disclosure should be understood to cover all adjustments, equivalents and / or alternatives falling within the spirit and scope of various embodiments of the present disclosure.

[0024] Hereinafter, the term "include" or "may include" used in various embodiments of the present disclosure indicates the presence of the disclosed functions, operations, or elements and does not limit one or more functions, operations, or elements from being added. Also, as used in various embodiments of the present disclosure, the terms "include", "have", and their conjugates merely indicate that specific features, numbers, steps, operations, elements, components, or combinations thereof are present and do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0025] Embodiment: Reference Figures 1-5 As shown, the utility model discloses an embodiment of the controller of electric bicycle, it includes: the seat body 100 with containing cavity 120 and fixed hole 126, with the seat body 100 is connected and closes containing cavity 120 one end cover 200, be located in containing cavity 120 and one side with the seat body 100 abutting contact circuit board 300, set up on the other side of circuit board electrical components 400, for the fixed fastener 500 between cover 200 and seat body 100 carry out, and pass through circuit board 300 and extend into fixed hole 126 and fix multiple connecting pieces 520.

[0026] The seat body 100 is substantially rectangular, and the upper end is open and at least three sides surround the containing cavity 120, and the remaining one side has an opening 124 communicating with the containing cavity 120. The opening 124 is defined by the seat side walls on both sides. The bottom end of the seat body 100 includes an upper end portion and a lower end portion, wherein the upper end portion is a flat surface and is provided with a plurality of fixed holes 126, and a plurality of convex points 128 are integrally formed, and the lower end portion is provided with a plurality of heat dissipation convex ribs 140 and a heat dissipation groove 142 between adjacent two heat dissipation convex ribs 140. The seat body 100 is made of metal material and is integrally formed. The heat dissipation convex ribs 140 extend along the length direction of the seat body 100. The heat dissipation convex ribs 140 are used to increase the heat dissipation area and facilitate heat dissipation, so as to conduct the heat of the circuit board 300 outward.

[0027] The cover 200 is substantially plate-shaped and is used to close the upper end opening of the containing cavity 120, and is made of metal material.

[0028] The circuit board 300 is a printed circuit board and is located in the containing cavity 120, and the upper end surface is provided with the electrical components 400, and the lower end surface is in abutting contact with the upper end portion of the seat body 100, and the circuit board 300 is provided with a plurality of positioning holes 320 matched with the convex points 128 and through holes allowing the connecting pieces 520 to pass through.

[0029] The electrical assembly 400 comprises three-phase terminals 420, power supply terminals 424, MOS tubes 440 and capacitors, wherein the three-phase terminals 420 and the power supply terminals 424 are used for welding power supply lines and corresponding motor three-phase lines.

[0030] Further, the sidewall of the seat body 100 is provided with a plurality of seat body holes, and the cover body 200 is correspondingly provided with a plurality of cover body holes, and the cover body 200 and the seat body 100 are fixed by screws 500.

[0031] The connecting piece 520 comprises a head 522 at one end, a tail 524 at the other end, and an intermediate part 526 between the head 522 and the tail 524, wherein the cross-sectional shape of the head 522 and the tail 524 is circular, and the cross-sectional shape of the intermediate part 526 is polygonal. The connecting piece 520 is made of metal material. The connecting piece 520 is preferably a threaded stud, which is longer than the screw 500, passes through the through hole of the circuit board 300 and is fixed with the fixing hole 126.

[0032] The embodiment also comprises a rubber piece 600 for closing the opening 124. The rubber piece 600 is provided with positioning grooves 620 on both sides for cooperating with the sidewall of the seat body.

[0033] The utility model discloses the advantages: the utility model discloses the heat that MOS tube produces can be quickly radiated through seat body, and its radiating effect is good, and the volume is small, and structure, process etc.

[0034] Of course, the above-mentioned embodiments only serve to illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. Any equivalent transformation or modification made in accordance with the spirit and essence of the main technical solution of the present application should be covered within the protection scope of the present application.

Claims

1. A controller for an electrically powered bicycle, characterized in that It includes: The body (100) has a containing cavity (120) and fixing holes (126), the cover (200) is connected with the body (100) and seals one end of the containing cavity (120), the circuit board (300) is located in the containing cavity (120) and abuts against the body (100) on one side, the electrical components (400) are arranged on the other side of the circuit board (300), and the plurality of connecting pieces (520) pass through the circuit board (300) and extend into the fixing holes (126) and are fixed.

2. The controller of the electrically driven bicycle according to claim 1, characterized in that: The body (100), the cover (200) and the connecting pieces (520) are all made of metal materials.

3. The controller of the electrically driven bicycle according to claim 2, wherein: The electrical components (400) include three-phase terminals (420), power supply terminals (424) and MOS tubes (440), wherein the MOS tubes (440) are patch chips.

4. The controller of the electrically driven bicycle according to claim 3, wherein: The body (100) further includes integrally formed protrusions (128), wherein the circuit board (300) has positioning holes (320) matched with the protrusions (128).

5. The controller of the electrically driven bicycle according to claim 4, wherein: The body (100) has an opening (124) communicating with the containing cavity (120).

6. The controller of the electrically motorized bicycle according to claim 1, characterized in that It further includes a rubber piece (600) for sealing the opening (124).

7. The controller of an electrically motorized bicycle according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The connecting pieces (520) include heads (522) at one end, tails (524) at the other end and intermediate portions (526) between the heads (522) and the tails (524), wherein the heads (522) and the tails (524) have circular cross sections, and the intermediate portions (526) have polygonal cross sections.

8. The controller of the electrically motorized bicycle according to claim 7, characterized in that: The bottom end of the body (100) includes an upper end portion and a lower end portion, wherein the upper end portion is a flat surface and is provided with a plurality of fixing holes (126) and a plurality of integrally formed protrusions (128).

9. The controller of an electrically driven bicycle according to claim 8, wherein: The lower end portion is provided with a plurality of heat dissipation ribs (140) and heat dissipation grooves (142) between adjacent two heat dissipation ribs (140).

10. The controller of the electrically motorized bicycle according to claim 9, characterized in that: The upper end portion of the body (100) abuts against the circuit board (300), and the heat dissipation ribs (140) conduct the heat of the circuit board (300) outward.

Images