CN111301600A - Digital electric vehicle and operation signal digital conversion control box thereof - Google Patents

Abstract

The invention discloses a digital conversion control box for operation signals of a digitized electric vehicle, comprising a box body and a conversion device, wherein the conversion device comprises: for digitizing the operation signal generated by the operation part of the electric vehicle and sending it to a communication bus The control circuit board includes an operation signal conversion circuit and a digital signal transmission circuit; an operation part coupler for coupling the operation part and the operation signal conversion circuit is electrically connected with the operation part through a detachable structure; A bus coupler for coupling the communication bus and the digital signal transmission circuit, and is electrically connected with the communication bus through a separable structure; the box body includes: an upper cover and a lower cover that are fastened together to form a accommodating cavity for installing a control circuit board cover. The invention also provides a digital electric vehicle, which realizes the digital control of the electric vehicle and improves the safety and reliability.

Description

A digital electric vehicle and its operation signal digital conversion control box

technical field

The invention belongs to the technical field of electric vehicle control, in particular to a digital electric vehicle and a digital conversion control box for operation signals thereof.

Background technique

Electric vehicles use electricity as energy, are driven by motors, do not require manual pedals, save effort, and have low noise, no exhaust gas, and less pollution compared with motorcycles and other internal combustion engines, so they have developed rapidly. Electric vehicles have various operations to ensure their normal driving, such as light control operations, gear shifting operations, and honking operations. The operation of the electric vehicle in the prior art is mostly controlled by analog signals, and each different operation requires an independent cable to be controlled separately, which makes the cable connections in the electric vehicle complicated and increases the difficulty of assembly and maintenance. And the probability of failure increases, affecting the use of electric vehicles.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an electric vehicle operation signal digital conversion control box and a digital electric vehicle, so as to solve the technical problems of difficult assembly and maintenance and easy failure caused by numerous cable connections in the prior art.

In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions:

The present invention provides a digital conversion control box for electric vehicle operation signals, which includes a box body and a conversion device, wherein the conversion device includes: a control box for digitizing an operation signal generated by an operation part of an electric vehicle and sending it to a communication bus A circuit board, which includes an operation signal conversion circuit and a digital signal transmission circuit; an operation part coupler used for coupling the operation part to the operation signal conversion circuit, which is electrically connected with the operation part through a detachable structure; used for communication The bus is coupled to the bus coupler of the digital signal transmission circuit, which is electrically connected with the communication bus through a separable structure; the box body includes: an upper cover and a lower cover that are mutually buckled to form an accommodating cavity for installing a control circuit board; The first opening for avoiding the operation part coupler for connecting the operating part; the second opening for avoiding the bus coupler for connecting the communication bus.

The above technical solution can be further improved by the following measures:

Further, the operation part coupler includes at least one plug housing and at least two pins located in the plug housing; the outer side of the plug housing is clamped on the first opening, and the inner side has a The socket is plugged with the connection end of the operation part; the pin is located in the socket and is electrically connected to the operation signal conversion circuit through the lead wire.

Further, a first sealing member for preventing liquid from entering the accommodating cavity is provided between the at least one plug housing and the first opening.

Further, the outer side of the first sealing member has an annular groove for the hole wall of the first opening to fit with it, and the inner side has a through hole for the plug-in housing to penetrate to form a seal therebetween. hole.

Further, a second seal is provided between the upper cover and the lower cover to prevent liquid from entering the accommodating cavity.

Further, the bus coupler includes a soft wire harness and a bus connection end, the soft wire harness passes through the second opening and is electrically connected to the digital signal transmission circuit, and the bus connection end has at least four pins.

Further, the conversion control box is in the shape of a wired mouse as a whole.

Further, the operation part of the electric vehicle includes one or more of a power button, a light control button, a steering control button, a whistle button, an acceleration knob, a gear control button and a brake button.

Further, the digital signal sending circuit includes a CAN bus communication chip.

Further, the bus coupler includes two power lines and two data lines, the data lines are electrically connected to the CAN bus communication chip, and the power lines are electrically connected to the power circuit on the control circuit board.

The present invention also provides a digital electric vehicle, which includes the above-mentioned digital conversion control box, so as to convert the operation signal generated by the operation part into a digital signal and upload it to the communication bus. The electric vehicle is an electric bicycle, an electric motorcycle or an electric moped.

Due to adopting the above technical solutions, the present invention has the following beneficial technical effects:

The invention provides a digital conversion control box for electric vehicle operation signals, which adopts a modular structure and is controlled by digital signals, has the technical effects of multiple operation integration, simplified cable structure, stable and reliable control, and solves the problems in the prior art. The problems of difficult assembly and maintenance and easy failure caused by the numerous cable connections.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of an electric vehicle of the present invention;

Fig. 2 is the module block diagram of the digital conversion control box of the present invention;

Fig. 3 is the three-dimensional combined view of the digital conversion control box of the present invention;

FIG. 4 is a three-dimensional combined view of the digital conversion control box of the present invention from another perspective;

5 is an exploded perspective view of the digital conversion control box of the present invention;

6 is an exploded perspective view of the digital conversion control box of the present invention from another perspective.

In the accompanying drawings, the list of components represented by each number is as follows:

500-electric vehicle; 100-digital conversion control box; 10-box body; 20-bus coupler; 30-operator coupler; 11-upper cover; 12-lower cover; 103-first opening; 102-first Two openings; 121-seal groove; 21-soft wiring harness; 22-bus connection; 31-plug shell; 32-pin; 310-plug interface; 4-control circuit board; 51-second seal ; 52-first seal; 520-through hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIGS. 1 to 6 , the present invention provides a digital conversion control box for electric vehicle operation signals, which is used in an electric vehicle 500 , especially an electric bicycle. There are various operation parts (not shown) on the electric bicycle to operate the electric bicycle to realize various functions to ensure its normal driving, such as light control buttons, gear shift buttons, horn buttons, etc. The conversion control box is used to connect with operations such as lighting control operation, gear shifting operation, and honking operation, so as to realize electric vehicle functions such as lighting control, gear shifting, and honking.

Please refer to FIG. 2 to FIG. 6 , the electric vehicle operation signal digital conversion control box provided by the present invention includes a box body 10 and a conversion device installed in the box body 10 .

The conversion device includes a control circuit board 4 , an operation part coupler 30 and a bus coupler 20 . The control circuit board 4 is used to digitize the operation signal generated by the operation part of the electric vehicle and send it to the communication bus, and the control circuit board 4 includes an operation signal conversion circuit and a digital signal transmission circuit. The operation part coupler 30 is used for coupling the operation part and the operation signal conversion circuit, and is electrically connected with the operation part through a separable structure. The bus coupler 20 is used for coupling the communication bus and the digital signal sending circuit, and is electrically connected with the communication bus through a separable structure.

The box body 10 includes an upper cover 11 and a lower cover 12 that are fastened together to form a accommodating cavity for installing the control circuit board 4 . The box body 10 is formed with a first opening 103 for avoiding the operation part coupler 30 for connecting the operation part, and a second opening 102 for avoiding the bus coupler 20 for connecting the communication bus.

Please refer to FIG. 5 , the upper cover 11 has a top wall and a side wall, and the first opening 103 is opened on one side wall of the upper cover 11 . The first opening 103 is opened upward from the lower end of the side wall, and has a semi-open structure, so as to facilitate the installation of the operation part coupler 30 , and the first opening 103 only needs to be aligned with the operation part coupler 30 during installation. , the upper cover 11 can be directly pressed down to realize the installation and alignment of the operation part coupler 30 . The operating portion coupler 30 includes at least one plug housing 31 and at least two pins 32 located in the plug housing 31, and the two pins 32 are respectively corresponding to the electrical connection wires connected to the control buttons or knobs; The outer side of the plug housing 31 is clamped on the first opening 103, and the inner side thereof has a plug port 310 that is plugged into the connecting end of the operation part; the pin 32 is located in the plug port 310, and its It is electrically connected to the operation signal conversion circuit through lead wires. In this embodiment, the operating portion coupler 30 includes two plug housings 31 , each of which is provided with ten pins 32 , the two plug housings 31 and their respective pins 32 are respectively used to control the operation parts arranged near the left and right handles of the electric vehicle. The operation part of the electric vehicle may include one or more of a power button, a light control button, a steering control button, a whistle button, an accelerator knob, a gear control button and a brake button.

Further, a first sealing member 52 is disposed between the at least one plug housing 31 and the first opening 103 to prevent liquid from entering the accommodating cavity. The first sealing member 52 is a plate shape made of a soft waterproof material, such as a rubber plate, a silicone plate, etc., and a through hole 520 is formed on the inner side of the first sealing member 52 for the insertion of the plug housing 31 to form a seal therebetween. , so as to achieve waterproofing of the gap between the first sealing member 52 and the plug housing 31 . In order to enhance the waterproof between the first sealing member 52 and the box body, the outer side of the first sealing member 52 is provided with an annular groove into which the hole wall of the first opening 103 is fitted. It is also possible to set a slot on the hole wall of the first opening 103 , and at the same time, set a convex edge to be fitted on the first sealing member 52 .

The upper cover 11 of the box body 10 is covered with the lower cover 12, and the two can be connected and fixed by means of snaps, screws, or the like. In order to prevent water from entering the gap between the upper cover 11 and the lower cover 12 , a second sealing member 51 for preventing liquid from entering the accommodating cavity is further provided between the upper cover 11 and the lower cover 12 . The second sealing member 51 is an annular shape made of a flexible and waterproof material, such as a rubber ring, a foam ring, and the like. The lower cover 12 is provided with a sealing groove 121, the second sealing member 51 is installed in the sealing groove 121, when the upper cover 11 and the lower cover 12 are closed, the second sealing member 51 The edge is squeezed to seal the gap between the upper and lower covers to achieve waterproofing.

Please refer to FIG. 5 and FIG. 6 , the bus coupler 20 includes a flexible wire harness 21 and a bus connection end 22 , the flexible wire harness 21 passes through the second opening 102 and is electrically connected to a digital signal transmission circuit, the digital signal The sending circuit sends the digital control signal to the CAN bus communication chip (also called the CAN bus transceiver chip). The digital signal sending circuit can be realized by those skilled in the art without creative work, and belongs to the prior art in the field. scope, so it will not be repeated in detail. The bus connection end 22 has at least four pins, two of the four pins are power supply pins for power supply, and two are signal pins for transmitting digital signals, corresponding to the soft wire harness including two pins. One power line and two data lines are connected to the power pin and the signal pin correspondingly, wherein the power line and the power pin are connected by welding, and the data line and the signal pin are connected by welding. In this embodiment, the bus coupler 20 extends from the side of the box body 10 , so that the conversion control box is in the shape of a wired mouse as a whole. In one embodiment, the communication bus connected to the bus coupler 20 may be, for example, a CAN bus, and the digital signal transmission circuit on the control circuit board 4 includes a CAN bus communication chip, and the present invention adopts a TJA1050 chip as the CAN bus communication chip. The data line is electrically connected to the CAN bus communication chip, and the power line is electrically connected to the power supply circuit on the control circuit board 4 , and the power supply circuit provides power for the electrical components on the control circuit board 4 .

In another embodiment, the bus coupler 20 may also have 3 power lines and 2 data lines, wherein the 2 power lines and the 2 data lines have the same functions as the power lines and data lines in the previous embodiment, The other 1 power cord is used when the electric vehicle is dormant.

It should be added that the present invention is especially suitable for power-assisted electric vehicles such as electric bicycles, electric motorcycles, and electric tricycles. Compared with the analog quantity, its anti-interference is stronger and the control is more precise. In addition, setting the digital conversion control box for operating signals can greatly improve the modularization and standardization level of electric vehicles. Multiple models can share a digital conversion control box, and the operating components of the new model can be plugged into the conversion control box to realize automatic identification and conversion. Matching, it significantly shortens the research and development cycle and accelerates the progress of launching new models.

The use process is as follows: connect the operation part of the electric vehicle to the operation part coupler 30 through a wire, and connect the bus coupler 20 to the communication bus. When the operation part of the electric vehicle is operated, for example, pressing the left turn signal operation key, this When the operation signal is transmitted to the operation signal conversion circuit of the control circuit board 4 through the wire and the operation part coupler 30, the operation signal conversion circuit converts the operation signal into a digital signal and transmits it to the digital signal transmission circuit. The circuit transmits the digital signal to the component to be operated through the bus coupler 20 and the communication bus, so as to realize the control of the component to be operated, that is, to control the left turn signal to light up or flash.

From the above description, the inventive concept of the technical solution of the present invention can be clearly understood. The electric vehicle operation signal digital conversion control box provided by the present invention adopts a modular structure and is controlled by digital signals, has the technical effects of multiple operation integration, simplified cable structure, stable and reliable control, and solves the problem of cable problems in the prior art. Difficulty in assembly and maintenance and prone to failure caused by numerous connections.

The above-disclosed preferred embodiments of the present invention are provided only to help illustrate the present invention. The preferred embodiments do not exhaust all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the content of this specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (10)

1. A digital conversion control box for an electric vehicle operation signal, comprising a box body and a conversion device, wherein the conversion device comprises: A control circuit board for digitizing the operation signal generated by the operation part of the electric vehicle and sending it to the communication bus, which includes an operation signal conversion circuit and a digital signal transmission circuit; an operation part coupler for coupling the operation part to the operation signal conversion circuit, which is electrically connected with the operation part through a separable structure; A bus coupler for coupling the communication bus to the digital signal sending circuit, which is electrically connected with the communication bus through a separable structure; The box body includes: Snap together to form the upper cover and the lower cover of the accommodating cavity for installing the control circuit board; a first opening for avoiding the operating part coupler to connect the operating part; The second opening is used to avoid the bus coupler for connecting to the communication bus. 2. The electric vehicle operation signal digital conversion control box according to claim 1, wherein the operation part coupler comprises at least one plug housing and at least two pins located in the plug housing; The outer side of the plug-in housing is clamped on the first opening, and its inner side has a plug-in port that is plugged with the connection end of the operation part; signal conversion circuit. 3 . The digital conversion control box for electric vehicle operation signals according to claim 2 , wherein a first sealing member is provided between the at least one plug-in housing and the first opening to prevent liquid from entering the accommodating cavity. 4 . . 4. The electric vehicle operation signal digital conversion control box according to claim 1, 2 or 3, wherein the outer side of the first sealing member has a ring shape for the hole wall of the first opening to be fitted with it. The inner side of the card slot has a through hole through which the plug-in housing penetrates to form a seal therebetween. 5 . The digital conversion control box for electric vehicle operation signals according to claim 1 , wherein a second seal is provided between the upper cover and the lower cover to prevent liquid from entering the accommodating cavity. 6 . 6 . The digital conversion control box for electric vehicle operation signals according to claim 1 , wherein the bus coupler comprises a soft wire harness and a bus connection end, and the soft wire harness passes through the second opening and is electrically connected. 7 . For the digital signal transmission circuit, the bus connection terminal has at least four pins. 7. The electric vehicle operation signal digital conversion control box according to claim 1 or 2 or 4 or 6, wherein the conversion control box is in the shape of a wired mouse as a whole, and the bus coupler extends out of the box to form a rat tail. 8. The electric vehicle operation signal digital conversion control box according to claim 1, wherein the operation part of the electric vehicle comprises a power button, a light control button, a steering control button, a whistle button, an accelerator knob, a gear position One or more of the control keys and brake keys. 9 . The digital conversion control box for electric vehicle operation signals according to claim 1 , wherein the digital signal transmission circuit comprises a CAN bus communication chip. 10 . 10 . A digital electric vehicle, comprising an operation signal digital conversion control box, wherein the operation signal digital conversion control box is the electric vehicle operation signal digital conversion control box according to any one of claims 1 to 9 .

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