KR102625538B1 - Relay board detachable electric vehicle charging device - Google Patents

Abstract

The present invention relates to a relay board detachable electric vehicle charging device. Specifically, the relay comprised in the electric vehicle charging device is converted into a module and a bus bar or bus duct means capable of flowing a large current is used. This is an electric vehicle charging device that can configure the charging device into multiple channels through a 3-phase, 4-wire power supply. More specifically, the relay, which has a relatively high probability of failure in the electric vehicle charging device, is installed in the form of a separate board (Relay Board). In the event of a breakdown of the electric vehicle charging device installed in the field by modularizing it, any non-expert can quickly repair it by attaching and detaching the relay board without the help of the charging device manufacturer, and attaching and detaching a relay board larger than the capacity of the existing relay of the electric vehicle charging device. By installing it, you can expand the power of the charger, and you can attach and detach the relay board by placing a bus bar (horizontal) or bus duct (vertical) inside the charger that can receive power in a 3-phase 4-wire system and flow a large current. This is about a relay board detachable electric vehicle charging device that can reduce additional costs when increasing charger capacity and expanding multiple channels (basic 1 channel ⇒ 2 channels ⇒ 3 channels).

Description

{Relay board detachable electric vehicle charging device}

The present invention relates to a relay board detachable electric vehicle charging device. Specifically, the relay comprised in the electric vehicle charging device is converted into a module and a bus bar or bus duct means capable of flowing a large current is used. This is an electric vehicle charging device that can configure the charging device into multiple channels through a 3-phase, 4-wire power supply. More specifically, the relay, which has a relatively high probability of failure in the electric vehicle charging device, is installed in the form of a separate board (Relay Board). In the event of a breakdown of the electric vehicle charging device installed in the field by modularizing it, any non-expert can quickly repair it by attaching and detaching the relay board without the help of the charging device manufacturer, and attaching and detaching a relay board larger than the capacity of the existing relay of the electric vehicle charging device. By installing it, you can expand the power of the charger, and you can attach and detach the relay board by placing a bus bar (horizontal) or bus duct (vertical) inside the charger that can receive power in a 3-phase 4-wire system and flow a large current. This is about a relay board detachable electric vehicle charging device that can reduce additional costs when increasing charger capacity and expanding multiple channels (basic 1 channel ⇒ 2 channels ⇒ 3 channels).

As the supply of electric vehicles is rapidly increasing, the construction of charging infrastructure is also progressing rapidly. However, the subsidy support project is focused on installation rather than the operation or management of charging stations. As a side effect, broken or neglected chargers are affecting the electric vehicle market. It is emerging as a chronic problem.

Electric vehicle chargers are part of a system connected to the KEPCO distribution system and at the same time have the characteristics of home appliances controlled by electronic devices, so the fundamental cause is that field technicians cannot easily respond when problems occur with the charger in the external environment. Consumers have to waste a lot of money and time by dismantling existing products and replacing them with new ones, and manufacturers have to spend a lot of time and money on the social management costs while operating chargers by having technicians repair collected chargers. It is inevitable that it will occur continuously and accumulate.

Meanwhile, as shown in FIGS. 1A to 1B, in the case of a conventional electric vehicle charger, the relay that performs the switching role of connecting or disconnecting the charger and the battery is integrated with the input terminal portion and the output power terminal portion, or the relay is combined. When the board is assembled with a charging case or a baserack directly connected to the case and a failure occurs due to a relay contact problem, in order to separate and replace the board integrated with the relay, first, the input/output cable and many control wires must be separated, and second, the input/output cable and many control wires must be separated. This involves a complicated process of removing the PCB board from the case or the base rack directly connected to the case, replacing it, and then reassembling it.

Accordingly, in order to improve the above problems, there is a need for an electric vehicle charger that modularizes the relay components into a separate board and can be attached and detached.

In addition, in the case of conventional slow-speed electric vehicle chargers, due to the construction of main power lines without considering future capacity expansion during initial construction, existing main power lines cannot be utilized and power cables appropriate for the charger capacity must be re-laid, which increases costs. There were overlapping drawbacks.

Therefore, in order to improve the above-mentioned problem, the present invention places a bus bar (horizontal) or bus duct (vertical) that can receive the maximum allowable current of the power trunk cable by receiving power in a 3-phase 4-wire system, inside the charger. We propose an electric vehicle charging device that covers so that large currents can flow and reduces additional costs when expanding charger capacity and expanding multi-channels (basic 1 channel ⇒ 2 channels ⇒ 3 channels) through the attachment and detachment of the above large capacity relay board. It was done.

Republic of Korea Patent No. 10-2413963

Therefore, the present invention was devised to solve the above conventional problems,

The purpose of the present invention is to modularize the relay, which has a relatively high probability of failure in the electric vehicle charging device, into a separate board (Relay Board), so that when a failure occurs in the electric vehicle charging device installed in the field, any non-expert can board the relay board without the help of the charging device manufacturer. We aim to provide the convenience of quick repairs by detachable and replacement.

Another object of the present invention is to expand the power of the charger by attaching and installing a relay board larger than the capacity of the existing relay of the electric vehicle charging device, and to provide a bus bar that can flow a large current by receiving power in a 3-phase 4-wire type. (Horizontal) or Bus Duct (vertical), etc. are placed inside the charger to increase the charger capacity and multi-channel expansion (basic 1 channel ⇒ 2 channels ⇒ 3 channels) through the attachment and detachment of the relay board, which can reduce additional electricity costs. We would like to provide a car charging device.

In order to achieve the problem that the present invention seeks to solve, a relay board detachable electric vehicle charging device according to an embodiment of the present invention,

A main body (100) in which an internal space is formed; and

A terminal portion 200 formed on one side of the main body; and

A bus bar means 300 connected to one side of the terminal unit and the other side connected to the modular relay board 400; and

The problem of the present invention is solved by being configured to include a modular relay board 400 that is coupled to the bus bar means when expanding the charger capacity.

The relay board detachable electric vehicle charging device according to the present invention,

The relay, which has a relatively high failure rate in electric vehicle chargers, has been modularized into a separate board (Relay Board), so that in the event of a breakdown in the electric vehicle charger installed in the field, any non-expert can quickly repair the relay board by attaching, detaching, and replacing it without the help of the charging device manufacturer. It provides convenience and expandability to increase the power of the charger by attaching and installing a relay board larger than the capacity of the existing relay.

In addition, by placing a bus bar (horizontal) or bus duct (vertical) that can receive the maximum allowable current of the main power cable by receiving power in a 3-phase 4-wire system, it is covered to allow large currents to flow inside the charger. Additional cost savings are provided when expanding charger capacity and expanding multiple channels (basic 1 channel ⇒ 2 channels ⇒ 3 channels) through the attachment and detachment of a large-capacity relay board.

1A to 1B are diagrams illustrating boards configured in a typical conventional electric vehicle charger.
Figure 2 is a schematic configuration diagram of a relay board detachable electric vehicle charging device according to an embodiment of the present invention.
Figure 3 is an example of an interface board located on the bus bar means 300 of a relay board detachable electric vehicle charging device according to an embodiment of the present invention, and a plurality of modular relay boards 400 mounted on the interface board. .
Figure 4 is an exemplary diagram specifically showing the bus bar means 300 of the relay board detachable electric vehicle charging device according to an embodiment of the present invention.
Figure 5 is a transparent illustration of an interface board being mounted on the bus bar means 300 of a relay board detachable electric vehicle charging device according to an embodiment of the present invention.
Figure 6 is an exemplary bottom view of a relay board detachable electric vehicle charging device according to an embodiment of the present invention.
Figure 7 is an exemplary bottom view showing a state in which a plurality of modular relay boards 400 are seated on the interface board of the relay board detachable electric vehicle charging device according to an embodiment of the present invention.
Figure 8 is an exemplary configuration diagram of the guide block portion 500 of the relay board detachable electric vehicle charging device according to an embodiment of the present invention.
Figure 9 is a transparent illustration of the relay board detachable electric vehicle charging device viewed from the front according to an embodiment of the present invention.
Figure 10 is an illustration of the front view when the cover of the relay board detachable electric vehicle charging device according to an embodiment of the present invention is opened.

In order to solve the problem of the present invention, a relay board detachable electric vehicle charging device according to a preferred embodiment,

In the relay board detachable electric vehicle charging device consisting of SMPS (10), main board (20), and interface board (30),

A main body (100) in which an internal space is formed; and

A terminal portion 200 formed on one side of the main body; and

A bus bar means 300 connected to one side of the terminal unit and the other side connected to the modular relay board 400; and

It is modular, and is characterized by being configured to include a modular relay board 400 that is coupled to the bus bar means when expanding the charger capacity.

At this time, it is characterized in that it further includes a plurality of guide block parts 500 formed at regular intervals to fix the modular relay board 400 on the internal space of the main body 100.

Hereinafter, the relay board detachable electric vehicle charging device according to the present invention will be described in detail through an embodiment.

Figure 2 is a schematic configuration diagram of a relay board detachable electric vehicle charging device according to an embodiment of the present invention.

As shown in Figure 2, the relay board detachable electric vehicle charging device of the present invention consists of a general SMPS (10), a main board (20), and an interface (30), and additionally includes a terminal portion (200) and a bus bar means. (300) and a modular relay board (400).

As described above, when the bus bar means 300 and the modular relay board 400 are configured, the relay board inside the main body is provided in the form of a module to replace and replace the existing AC slow electric vehicle charger, just as a graphics card is expanded in a PC. A multi-channel charger that allows easy expansion of charger capacity just by adding additional devices becomes possible.

To be specific, an internal space is formed in the main body 100, and the terminal portion 200 is formed therein.

External power is supplied through the terminal, and one side is connected to the terminal, and the other side is connected to the modular relay board, forming a bus bar means 300.

At this time, as a characteristic, a modular relay board 400 is configured, which is modular and has expandable characteristics, so expansion of the charger capacity is possible.

In particular, as a key component of the present invention, it further includes a plurality of guide block parts 500 formed at regular intervals to fix the modular relay board 400 in the internal space of the main body 100. It is characterized by

As shown in FIGS. 3 to 4 and 8, the guide block unit 500,

An ‘L’ shaped guide partition 510 having a certain height;

It is formed on the inner side of the guide bulkhead, and is formed at a height lower than the height of the guide bulkhead, so that the corner portion of the modular relay board 400 can be seated in the space 525 according to the height difference, and is coupled to the center portion. It is configured to include a board bolting combination module 520 for forming holes to match the holes formed at the corners of the modular relay board 400 and bolting them together.

Specifically, an 'ㄱ' shaped guide partition 510 with a certain height is formed, and a board bolting coupling module 520 is formed on the inner surface of the guide partition.

At this time, the board bolting coupling module 520 is formed at a height lower than the height of the guide bulkhead.

For example, when the height of the guide bulkhead 510 is 7CM, the height of the board bolting coupling module 520 is formed at 5CM, resulting in a height difference of 2CM.

Accordingly, since the space 525 is formed according to the height difference, the corner portion of the modular relay board 400 can be seated here.

In addition, a coupling hole is additionally formed in the central portion to match the hole formed in the corner portion of the modular relay board 400 for bolting connection.

An attempt was made to place the modular relay board (400) in a standing position, but as a result of testing with existing slots, it was found that the allowable current was exceeded.

Therefore, as described above, holes are drilled and bolted at the corners of the modular relay board 400.

In the case of the above configuration, a guide block capable of fixing the modular relay board 400 is provided to facilitate assembly in a designated groove like a slot and to increase the level difference between the bus bar means 300 and the modular relay board 400. Because it can be set to the exact height, it provides two effects by bringing the surfaces through which the current flows into contact.

The modular relay board 400 provides a structure that can be easily attached and detached according to the capacity to be expanded because the relay 420 can be exchanged, for example, 7KW, 11KW, 14KW, 21KW, etc.

In the embodiment of the present invention, since three modular relay boards 400 are installed, there are four guide block units 500 per board, so a total of 12 guide block units 500 are formed at regular intervals. It will happen.

Meanwhile, as shown in FIG. 4, the bus bar means 300 is,

When configured as a 3-phase 4-wire system,

A first bolting coupling portion 311 that has a length up to the position where the last modular relay board 400 is coupled and is formed in the area where the first modular relay board is located, and rises to the height of the guide block portion 500; and a bolting coupling hole (310R) formed in the first bolting coupling portion (311); a first bus bar (310) comprising a; and

A second bolting coupling portion 312 that has a length up to the position where the last modular relay board 400 is coupled and is formed at the area where the second modular relay board is located, rising to the height of the guide block portion 500; and a bolting coupling hole (310S) formed in the second bolting coupling portion (312); and a second bus bar (320) comprising a.

A third bolting coupling portion 313 that has a length up to the position where the last modular relay board 400 is coupled and is formed in the area where the third modular relay board is located, and rises to the height of the guide block portion 500; and a bolting coupling hole (310T) formed in the third bolting coupling portion (313); and a third bus bar (330) configured to include.

It has a length up to the position where the last modular relay board (400) is coupled, and includes a first bolting coupling portion (311), a bolting coupling hole (310R), a second bolting coupling portion (312), and a bolting coupling hole (310S). , a fourth bus bar 340 configured to include a fourth bolting coupling portion 314 and a bolting coupling hole 310N, respectively, at positions parallel to the third bolting coupling portion 313 and the bolting coupling hole 310T; It is composed including.

Therefore, as shown in FIG. 3, the first output bus bar 411 and one N-line output bus bar 410 can be combined on the first modular relay board, respectively,

The second output bus bar 412 and one N-line output bus bar 410 can be combined on the second modular relay board,

It is characterized in that the third output bus bar 413 and one N-line output bus bar 410 can be combined with the third modular relay board.

For example, the R line is connected to the first bus bar 310, the S line is connected to the second bus bar 320, the T line is connected to the third bus bar 330, and the N line is connected to the fourth bus bar 340. You will be able to connect.

In particular, it is a self-evident fact that rather than connecting the above-mentioned specific lines to each of the bus bars, the specific lines may be changed and connected depending on the situation.

For example, this means that an S line may be connected to the first bus bar 310 instead of an R line.

Ultimately, by configuring it as above, it provides the advantage of saving electrical construction costs when expanding to a 3-phase 4-wire system.

When configured as above, it is possible to provide the advantages of easy expansion, convenience of work, and reduction of construction costs.

Meanwhile, according to an additional aspect, the modular relay board 400 includes,

By further including a temperature sensor unit, a power cut-off signal can be provided when the temperature exceeds a threshold.

That is, the temperature value detected through the temperature sensor unit is provided to the main board 20, and when the temperature value is compared with the threshold temperature value and exceeds this value, an operation stop signal is provided to the SMPS 10 to block the power supply. It will be done.

In addition, as shown in the drawing, the bus bar means 300 is laid as a base, the interface board 30 is seated on the upper side of the bus bar means, and the modular relay board ( After 400) is seated between the four guide block parts 500, the bus bar means 300 and the modular relay board 400 are connected through a bolting operation.

At this time, the modular relay board 400 includes,

An output bus bar formed on one side;

The N-line output bus bar 410 is formed at a position spaced apart from the output bus bar by a predetermined distance.

For example, as shown in FIG. 3, when formed on the first modular relay board, a first output bus bar 411 and an N-line output bus bar 410 are formed.

And, when formed on the second modular relay board, a second output bus bar 412 and an N-line output bus bar 410 are formed.

And, when formed on the third modular relay board, a third output bus bar 413 and an N-line output bus bar 410 are formed.

At this time, a characteristic feature is that the lengths of the first output bus bar 411, the second output bus bar 412, and the third output bus bar 413 are formed differently depending on the installation position.

In the conventional case, the busbar on the back is supplemented to allow large currents that cannot flow through thin copper foil to flow, but since soldering work is required, workability is significantly reduced, causing problems such as increased installation time and poor connection. It becomes possible.

However, forming a connection pattern as described above provides the advantage of solving these problems at once.

In addition, in the case of a conventional slow-speed electric vehicle charger, during initial construction, the existing main power line cannot be utilized due to the construction of the power main line without considering future capacity expansion, and a power cable appropriate for the charger capacity must be re-laid. This had the disadvantage of overlapping costs.

However, when configured as in the present invention, a bus bar (horizontal) or bus duct (vertical) that can receive the maximum allowable current of the power main cable by receiving power in a 3-phase 4-wire system is placed inside the charger. It covers so that large currents can flow, and can provide a synergistic effect of reducing additional costs when expanding charger capacity and multi-channel expansion (basic 1 channel ⇒ 2 channels ⇒ 3 channels) through the attachment and detachment of the above large capacity relay board. will be.

According to the present invention, the relay part of the electric vehicle charger, which has a relatively high probability of failure, is modularized so that in case of a breakdown of the electric vehicle charger installed in the field, anyone with basic electrical knowledge can conveniently replace it without the help of the manufacturer's personnel. sex is provided.

In addition, the bus bar means that can flow a large current provides the effect of increasing the charging power from the current 7Kw capacity to 7Kw/11Kw/14Kw, etc.

Those skilled in the art to which the present invention pertains as described above will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not limiting.

100: main body
200: terminal part
300: bus bar means
400: Modular relay board

Claims (2)

In the relay board detachable electric vehicle charging device consisting of SMPS (10), main board (20), and interface board (30),
A main body (100) in which an internal space is formed; and
A terminal portion 200 formed on one side of the main body; and
A bus bar means 300 connected to one side of the terminal unit and the other side connected to the modular relay board 400; and
It is modular and is configured to include a modular relay board 400 that is coupled to the bus bar means when expanding the charger capacity,
The bus bar means 300 is,
When configured as a 3-phase 4-wire system,
A first bolting coupling portion 311 that has a length up to the position where the last modular relay board 400 is coupled and is formed at a location where the first modular relay board is located, and rises to the height of the guide block portion 500; and a bolting coupling hole (310R) formed in the first bolting coupling portion 311; a first bus bar 310 comprising a; and
A second bolting coupling portion 312 that has a length up to the position where the last modular relay board 400 is coupled and is formed at the area where the second modular relay board is located, rising to the height of the guide block portion 500; and a bolting coupling hole (310S) formed in the second bolting coupling portion (312); and a second bus bar (320) comprising a.
A third bolting coupling portion 313 that has a length up to the position where the last modular relay board 400 is coupled and is formed in the area where the third modular relay board is located, and rises to the height of the guide block portion 500; and a bolting coupling hole (310T) formed in the third bolting coupling portion (313); and a third bus bar (330) configured to include.
It has a length up to the position where the last modular relay board (400) is coupled, and includes a first bolting coupling portion (311), a bolting coupling hole (310R), a second bolting coupling portion (312), and a bolting coupling hole (310S). , a fourth bus bar 340 configured to include a fourth bolting coupling portion 314 and a bolting coupling hole 310N, respectively, at positions parallel to the third bolting coupling portion 313 and the bolting coupling hole 310T; A relay board detachable electric vehicle charging device comprising:
According to clause 1,
A detachable relay board, characterized in that it further includes a plurality of guide block parts 500 formed at regular intervals to fix the modular relay board 400 on the internal space of the main body 100. Electric vehicle charging device.