CN213601827U

CN213601827U - Fill electric pile and electric leakage protector thereof

Info

Publication number: CN213601827U
Application number: CN202023263221.8U
Authority: CN
Inventors: 刘华雷
Original assignee: Shanghai Bituo Electric Co ltd
Current assignee: Shanghai Bituo Electric Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-07-02
Anticipated expiration: 2030-12-30

Abstract

The utility model provides a fill electric pile and electric leakage protector thereof. The charging pile comprises a shell with an opening on one side, wherein the shell comprises a rectangular cavity and an annular cavity which are communicated with each other, the annular cavity comprises an inner cylinder and an outer cylinder, a residual current transformer is arranged in the annular cavity, a control circuit board is arranged in the rectangular cavity, an electric wire of the residual current transformer is connected with the control circuit board, a terminal row used for being connected with a main circuit board of a charging pile is arranged on the control circuit board, a switching terminal seat is detachably inserted on the terminal row, and the terminal row is perpendicular to the control circuit board; the inner hole wall of the inner barrel is connected with a cross partition plate, inner threading barrels are arranged at the positions surrounded by the cross partition plate and the inner barrel respectively, the outer side wall of each inner threading barrel is connected with the cross partition plate and the inner barrel respectively, folding marks are arranged on connecting strips of the inner barrel, the cross partition plate and the inner threading barrels, and four outer threading barrels are uniformly arranged on the outer wall of the outer barrel. The cable has the advantages of small occupied space, convenience in cable outgoing, increase in creepage distance and electric clearance and flexibility and changeability in use.

Description

Fill electric pile and electric leakage protector thereof

Technical Field

The utility model relates to a fill electric pile and electric leakage protector thereof.

Background

At present, with the development of new energy technology, electric vehicles are also increasingly popularized, charging facilities serve as basic guarantees for the development of electric vehicles, and potential safety hazards of the charging facilities gradually become elbows for the development of electric vehicles.

Charging pile is as the facility that charges commonly used, often because the ageing damage of inside electrical insulation directly causes serious hidden danger such as electric leakage, earth fault, electric arc fault and short circuit, leads to incident such as electric fire even. In order to avoid the problems, the current international mandatory standard of the charging pile requires the functions of grounding detection, short-circuit protection and residual current protection.

In order to realize the residual current protection function, a residual current transformer is generally needed, two wires of two phases or four wires of three phases of electricity penetrate through the residual current transformer, and therefore the residual current is detected to judge whether electric leakage exists. The residual current transformer of prior art passes through the circuit and is connected with the binding post on the circuit board, and the electric wire that waits to detect passes from the residual current transformer, and the electric wire is arranged and residual current transformer's setting is very scattered in disorder, and occupation space is great, and because there is the contact mutually between the many electric wires that scatter moreover, electric clearance and creepage distance are little, have the potential safety hazard.

Therefore, a new technology that can reduce the occupied space and achieve the requirements of larger electrical clearance and creepage distance in a smaller space is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric leakage protection device which increases the electric clearance and creepage distance between wires through special structural design, leads the wires to be butted with connecting terminals nearby so as to standardize the wire arrangement and reduce the wire space occupation, and can also be suitable for horizontal installation and hanging installation at the same time; an object of the utility model is to provide an use above-mentioned electric leakage protector's electric pile that fills.

The utility model discloses an electric leakage protector's technical scheme is realized like this: the electric leakage protection device comprises a shell with an opening on one side, the shell comprises a rectangular cavity and an annular cavity which are communicated with each other, the annular cavity comprises an inner cylinder and an outer cylinder which are coaxial, a residual current transformer is installed in the annular cavity, a control circuit board is installed in the rectangular cavity, an electric wire of the residual current transformer is connected with the control circuit board, a terminal row used for being connected with a main circuit board of a charging pile is arranged on the control circuit board, a switching terminal seat is detachably inserted on the terminal row, and the terminal row is perpendicular to the control circuit board; be connected with the cross baffle on the interior pore wall of inner tube, four spaces punishment that cross baffle and inner tube enclose do not are equipped with interior threading section of thick bamboo, the lateral wall of interior threading section of thick bamboo is connected with cross baffle and inner tube respectively, be equipped with the crease so that take off cross baffle and interior threading section of thick bamboo after the crease rupture on the connecting strip of inner tube and cross baffle and interior threading section of thick bamboo, evenly set up four outer threading sections of thick bamboo on the outer wall of urceolus, four interior threading sections of thick bamboo and four outer threading sections of thick bamboo are used for the both ends of four electric wires of confession three-phase electricity respectively to pass or the both ends selectivity of two electric wires of confession double-phase.

Further, the housing is injection molded from plastic.

Further, the terminal block has six pins.

Furthermore, the switching terminal seat includes insulating pedestal, and the inboard of insulating pedestal is for being used for the jack that sets up with six contact pins one-to-one, the outside is for being used for the line ball screw of crimping electric wire.

Further, the control circuit board comprises a rectangular portion and a semi-annular portion, the rectangular portion is located in the rectangular cavity, the semi-annular portion is located in the annular cavity, and the rectangular portion shell is connected through screws.

The utility model discloses a fill electric pile's technical scheme is so realized: the charging pile comprises a main circuit board and an electric leakage protection device arranged on the main circuit board, the electric leakage protection device comprises a shell with an opening on one side, the shell comprises a rectangular cavity and an annular cavity which are communicated with each other, the annular cavity comprises an inner cylinder and an outer cylinder which are coaxial, a residual current transformer is arranged in the annular cavity, a control circuit board is arranged in the rectangular cavity, an electric wire of the residual current transformer is connected with the control circuit board, a terminal row connected with the main circuit board of the charging pile is arranged on the control circuit board, a switching terminal seat is detachably inserted on the terminal row, the control circuit board is connected with the main circuit board through the terminal row or the switching terminal seat, and; be connected with the cross baffle on the interior pore wall of inner tube, four spaces punishment that cross baffle and inner tube enclose do not are equipped with interior threading section of thick bamboo, the lateral wall of interior threading section of thick bamboo is connected with cross baffle and inner tube respectively, be equipped with the crease so that take off cross baffle and interior threading section of thick bamboo after the crease rupture on the connecting strip of inner tube and cross baffle and interior threading section of thick bamboo, evenly set up four outer threading sections of thick bamboo on the outer wall of urceolus, four interior threading sections of thick bamboo and four outer threading sections of thick bamboo are used for the both ends of four electric wires of confession three-phase electricity respectively to pass or the both ends selectivity of two electric wires of confession double-phase.

Further, the housing is injection molded from plastic.

Further, the terminal block has six pins.

By adopting the technical scheme, the beneficial effects of the utility model are that: (1) the integral shell is compact in modeling structure, and the outgoing line position of the electric wire can be conveniently adjusted according to the position adaptability of the terminal seat on the main circuit board, for example, if the electric wire is in two phases, the live line and the zero line of the electric wire can be threaded from the inner threading tube and the outer threading tube according to the position of the terminal seat on the main circuit board and the positions of the live line interface and the zero line interface on the terminal seat, and the outgoing line position closest to the live line and the zero line can be selected from the inner threading tube and the outer threading tube, so that the outgoing line distance is shortened as far as possible, the electric wire is saved, the space occupation of the electric wire is saved, the space volume of the electric leakage protection device in the control box of; (2) the arrangement of the terminal strip and the switching terminal seat can realize the connection of the control part by directly inserting the terminal strip into the terminal seat on the main circuit board during horizontal installation, and the switching terminal seat is quickly connected with the main circuit board during hanging installation, so that the connection mode is diversified, the selectivity is good, and the use is flexible and convenient; (3) the arrangement of the cross-shaped partition plate and the inner threading cylinder ensures that when the whole body is horizontally installed, the cross-shaped partition plate and the inner threading cylinder need to be welded on a main circuit board, and the problems of electrical clearance and creepage distance need to be considered because the welding end is made of metal, and at the moment, the isolation effect of the cross-shaped partition plate and the inner threading cylinder can achieve the purpose of realizing larger electrical clearance and creepage distance in a smaller space, so that the safety and the stability are ensured, and the hidden danger is reduced; when the wire is installed in a hanging mode, the problem of welding does not exist, the problem of electric clearance and creepage distance are not considered due to the fact that the insulating layer is arranged outside the wire, at the moment, the cross-shaped partition plate and the inner wire penetrating cylinder can be knocked off from the crease of the connecting strip of the cross-shaped partition plate and the inner wire penetrating cylinder and the inner cylinder, therefore, the product without the partition plate is changed into a product without the partition plate so as to further reduce space occupation, and the product is changed into another product after being knocked off, so that the applicability of.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a perspective view (front) of an embodiment of the earth leakage protection device of the present invention;

fig. 2 is a perspective view (rear) of the leakage protector of the present invention;

FIG. 3 is a rear view of the earth leakage protection device of the present invention;

FIG. 4 is a perspective view of the internal structure after the potting adhesive is removed;

FIG. 5 is a perspective view of the housing;

FIG. 6 is a front view of the housing;

fig. 7 is a perspective view of another embodiment of the earth leakage protection device of the present invention;

FIG. 8 is a front view of FIG. 7;

wherein: 1-shell, 11-rectangular cavity, 12-circular cavity, 121-inner cylinder, 122-outer cylinder, 123-cross partition plate, 124-inner threading cylinder, 125-outer threading cylinder, 2-residual current transformer, 3-control circuit board, 31-terminal row, 32-switching terminal base, 33-rectangular part, 34-semi-annular part, 35-screw, 4-wire, 5-pouring sealant, 6-indicator light and 7-detection button.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a fill electric pile's concrete embodiment: fill electric pile and include main circuit board and install the electric leakage protector on main circuit board, wherein fill the structure of electric pile and be prior art, and this place is no longer repeated. As shown in fig. 1-6, the electric leakage protection device as the main improvement of the present invention includes a casing 1 with an opening on one side, the casing 1 includes a rectangular cavity 11 and an annular cavity 12 which are communicated with each other, the annular cavity 12 includes a coaxial inner cylinder 121 and an outer cylinder 122, a residual current transformer 2 is installed in the annular cavity 12, a control circuit board 3 is installed in the rectangular cavity 11, an electric wire 4 of the residual current transformer 2 is connected with the control circuit board 3, a terminal row 31 connected with a main circuit board of a charging pile is arranged on the control circuit board 3, a switching terminal seat 32 is detachably inserted on the terminal row 31, the control circuit board 3 is connected with the main circuit board through the terminal row 31 or the switching terminal seat 32, and the terminal row 31 is perpendicular to the control circuit board 3; the inner hole wall of the inner barrel 121 is connected with a cross partition 123, four spaces surrounded by the cross partition 123 and the inner barrel 121 are respectively provided with an inner threading barrel 124, the outer side wall of the inner threading barrel 124 is respectively connected with the cross partition 123 and the inner barrel 121, folding marks are arranged on connecting strips of the inner barrel 121, the cross partition 123 and the inner threading barrel 124 so as to be convenient for taking down the cross partition 123 and the inner threading barrel 124 after being broken off from the folding marks, four outer threading barrels 125 are evenly arranged on the outer wall of the outer barrel 122, and the four inner threading barrels 124 and the four outer threading barrels 125 are respectively used for allowing two ends of four electric wires 4 of three-phase electricity to pass through or allowing two ends of two electric wires 4 of two-phase electricity to selectively pass.

More specifically, the housing 1 is injection molded from plastic. The terminal block 31 has six pins. The control circuit board 3 comprises a rectangular part 33 and a semi-annular part 34, the rectangular part 33 is located in the rectangular cavity 11, the semi-annular part 34 is located in the annular cavity 12, and the rectangular part 33 and the shell 1 are connected through screws 35. The inner cylinder 121 has a quincunx shape. The arrangement of the detection button 7 and the indicator lamp 6 is used for detecting a detection module used by the device, and after the detection button 7 is pressed, if the corresponding indicator lamp 6 is lightened according to the setting, no fault is proved, otherwise, the fault is proved.

When the electric leakage protection device is used, the integral shell 1 is compact in modeling structure, and the outgoing line position of the electric wire 4 can be conveniently adjusted according to the position adaptability of the terminal seat on the main circuit board, for example, if the electric leakage protection device is two-phase electricity, the live line and the zero line of the electric leakage protection device can be threaded from the closest outgoing line position selected from the inner threading cylinder 124 and the outer threading cylinder 125 according to the position of the terminal seat on the main circuit board and the positions of the live line interface and the zero line interface on the terminal seat, so that the outgoing line distance is shortened as much as possible, the electric wire 4 is saved, the space occupation of the electric wire 4 is saved, the space volume of the electric leakage protection device in the control box of the charging pile is reduced, and more gaps are reserved; the arrangement of the terminal strip 31 and the switching terminal seat 32 can realize the connection of a control part by directly inserting the terminal strip 31 into the terminal seat on the main circuit board during horizontal installation, and the switching terminal seat 32 is quickly connected with the main circuit board during hanging installation, so that the connection mode is diversified, the selectivity is good, and the use is flexible and convenient; the cross partition plate 123 and the inner threading cylinder 124 are arranged, when the whole body is installed horizontally, the whole body needs to be welded on a main circuit board, and the problems of electrical clearance and creepage distance need to be considered due to the fact that a welding end is made of metal, at the moment, the purpose of achieving larger electrical clearance and creepage distance in a smaller space can be achieved through the isolation effect of the cross partition plate 123 and the inner threading cylinder 124, safety and stability are guaranteed, and hidden dangers are reduced; when the electric wire 4 is installed in a hanging mode, the problem of welding does not exist, the problem of electric clearance and creepage distance are not considered due to the fact that the insulating layer is arranged outside the electric wire 4, the cross partition plate 123 and the inner threading cylinder 124 can be knocked off from the crease of the connecting strip of the cross partition plate and the inner threading cylinder 121, therefore, the electric wire becomes a product without partition plates to further reduce space occupation, and after the electric wire is knocked off, the electric wire is equivalently changed into another product, and the applicability of the electric wire is improved.

As shown in fig. 7 to 8, this embodiment is a structure for hanging type mounting, and the difference from the horizontal type mounting structure of the previous embodiment is that the cross partition 123 and the inner threading cylinder 124 in the middle are knocked off, the relay terminal block 32 is inserted into the terminal row 31, and the jumper wire is pressure-connected to the main circuit board by the screw 35 of the relay terminal block 32.

The adapter terminal base 32 includes an insulating base body, and the inside of the insulating base body is a socket for being disposed in one-to-one correspondence with the six pins, and the outside is a wire pressing screw 35 for pressing the wire 4.

The utility model discloses a specific embodiment of electric leakage protector is the same with the above-mentioned electric leakage protector's that fills in the specific embodiment of electric pile structure, and here is no longer repeated.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The electric leakage protection device is characterized by comprising a shell with an opening on one side, wherein the shell comprises a rectangular cavity and an annular cavity which are communicated with each other, the annular cavity comprises an inner cylinder and an outer cylinder which are coaxial, a residual current transformer is installed in the annular cavity, a control circuit board is installed in the rectangular cavity, an electric wire of the residual current transformer is connected with the control circuit board, a terminal bar used for being connected with a main circuit board of a charging pile is arranged on the control circuit board, a switching terminal seat is detachably inserted on the terminal bar, and the terminal bar is perpendicular to the control circuit board; be connected with the cross baffle on the interior pore wall of inner tube, four spaces punishment that cross baffle and inner tube enclose do not are equipped with interior threading section of thick bamboo, the lateral wall of interior threading section of thick bamboo is connected with cross baffle and inner tube respectively, be equipped with the crease so that take off cross baffle and interior threading section of thick bamboo after the crease rupture on the connecting strip of inner tube and cross baffle and interior threading section of thick bamboo, evenly set up four outer threading sections of thick bamboo on the outer wall of urceolus, four interior threading sections of thick bamboo and four outer threading sections of thick bamboo are used for the both ends of four electric wires of confession three-phase electricity respectively to pass or the both ends selectivity of two electric wires of confession double-phase.

2. An earth leakage protection device according to claim 1, characterized in that the housing is injection moulded from plastic.

3. An earth leakage protection device according to claim 1, characterized in that the terminal strip has six pins.

4. A leakage protection device according to claim 3, wherein the adapter terminal block comprises an insulating block body, the inside of the insulating block body is provided with jacks corresponding to the six pins one by one, and the outside of the insulating block body is provided with a crimping screw for crimping the wire.

5. The electrical leakage protection device of claim 1, wherein said control circuit board comprises a rectangular portion and a semi-annular portion, the rectangular portion being located in the rectangular cavity and the semi-annular portion being located in the annular cavity, the rectangular portion housing being attached by screws.

6. The charging pile comprises a main circuit board and an electric leakage protection device arranged on the main circuit board, and is characterized in that the electric leakage protection device comprises a shell with an opening on one side, the shell comprises a rectangular cavity and an annular cavity which are communicated with each other, the annular cavity comprises an inner cylinder and an outer cylinder which are coaxial, a residual current transformer is arranged in the annular cavity, a control circuit board is arranged in the rectangular cavity, an electric wire of the residual current transformer is connected with the control circuit board, a terminal row connected with the main circuit board of the charging pile is arranged on the control circuit board, a switching terminal seat is detachably inserted on the terminal row, the control circuit board is connected with the main circuit board through the terminal row or the switching terminal seat, and; be connected with the cross baffle on the interior pore wall of inner tube, four spaces punishment that cross baffle and inner tube enclose do not are equipped with interior threading section of thick bamboo, the lateral wall of interior threading section of thick bamboo is connected with cross baffle and inner tube respectively, be equipped with the crease so that take off cross baffle and interior threading section of thick bamboo after the crease rupture on the connecting strip of inner tube and cross baffle and interior threading section of thick bamboo, evenly set up four outer threading sections of thick bamboo on the outer wall of urceolus, four interior threading sections of thick bamboo and four outer threading sections of thick bamboo are used for the both ends of four electric wires of confession three-phase electricity respectively to pass or the both ends selectivity of two electric wires of confession double-phase.

7. The charging pole according to claim 6, wherein the housing is injection molded from plastic.

8. The charging pole according to claim 6, wherein the terminal block has six pins.

9. The charging pile according to claim 8, wherein the adapter terminal base comprises an insulating base body, the inner side of the insulating base body is provided with jacks which are arranged in one-to-one correspondence with the six pins, and the outer side of the insulating base body is provided with line pressing screws for pressing and connecting wires.

10. The charging pile according to claim 6, characterized in that the control circuit board comprises a rectangular portion and a semi-annular portion, the rectangular portion is located in the rectangular cavity, the semi-annular portion is located in the annular cavity, and the rectangular portion shell is connected through screws.