CN211405482U

CN211405482U - Bidirectional power supply circuit suitable for electric automobile alternating-current charging stake

Info

Publication number: CN211405482U
Application number: CN202020179228.2U
Authority: CN
Inventors: 余建东; 郭炼
Original assignee: SHANGHAI XUNDAO NEW ENERGY TECHNOLOGY CO LTD
Current assignee: SHANGHAI XUNDAO NEW ENERGY TECHNOLOGY CO LTD
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-09-01
Anticipated expiration: 2030-02-17

Abstract

The utility model provides a two-way power supply circuit suitable for electric automobile alternating-current charging stake, its characterized in that: including switching power supply main part and getting electric switch circuit, it is double-pole double-throw relay K to get electric switch circuit, and switching power supply main part connects relay K's movable contact one and movable contact two respectively, and relay K's normally closed contact one and normally closed contact two are connected and are filled the electric pile input, and relay K's normally open contact one and normally open contact two are connected and are filled the electric pile output, and relay K's coil connection fills the electric pile output. The utility model discloses circuit structure is simple, has two-way electricity function of getting, fills electric pile input and gets electric pile output and get the complete autonomic switching of electricity, simultaneously the utility model discloses do not influence the dielectric strength resistance who fills electric pile input and output, the circuit volume is less, can put into portable on filling electric pile interior mainboard.

Description

Bidirectional power supply circuit suitable for electric automobile alternating-current charging stake

Technical Field

The utility model relates to a bidirectional power supply circuit suitable for electric automobile alternating-current charging stake belongs to electric automobile intelligent charging facility field.

Background

The power supply in the electric automobile alternating-current charging pile is an extremely important module in the charging pile, is responsible for converting high-voltage alternating current into lower direct-current voltage to supply power for other circuits in the pile, and is a necessary circuit in the pile. At present, electric automobile's the scene of charging demonstrates more and more diversified development situation, has appeared some novel charging methods in the market, for example the car is reverse to discharge for arranging and inserting, and the car charges for another car through a double-end rifle, if will fill electric pile (the treasured that charges) in a section portable and realize above-mentioned two kinds of functions, then must require to fill the power supply circuit in the electric pile and have the function of two-way electricity of getting, does not have the electric pile that fills that can realize V2V and V2L function in the market at present yet.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the problem that a power circuit in an existing charging pile does not have a bidirectional power taking function is solved.

In order to solve the problem, the technical scheme of the utility model a two-way power supply circuit suitable for electric automobile alternating-current charging stake is provided, its characterized in that: including switching power supply main part and getting electric switch circuit, it is double-pole double-throw relay K to get electric switch circuit, and switching power supply main part connects relay K's movable contact one and movable contact two respectively, and relay K's normally closed contact one and normally closed contact two are connected and are filled the electric pile input, and relay K's normally open contact one and normally open contact two are connected and are filled the electric pile output, and relay K's coil connection fills the electric pile output.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses circuit structure is simple, has two-way electricity function of getting, fills electric pile input and gets electric pile output and get the complete autonomic switching of electricity, when filling electric pile input and have electricity, gets the electricity from the input, when filling electric pile output and have electricity, gets the electricity from the output, and this circuit function is accomplished by hardware completely, does not need software control, and the circuit is simple. And simultaneously the utility model discloses do not influence the withstand voltage performance who fills electric pile input and output, the circuit volume is less, can put into portable electric pile interior mainboard that fills.

The utility model discloses the circuit can be for filling other circuit power supplies in the electric pile, can get the electricity from filling electric pile and locate (three plugs, fence formula terminal), also can get the electricity from filling electric pile play electricity department (5m rifle head), can be with V2V, function integration such as V2L fills on same platform electric pile, only fills electric pile promptly and just can realize normally charging (the stake charges for the car), and the car discharges to arranging the plug, and the car is to car discharge etc. scene of charging, satisfies manifold demand of charging.

Drawings

Fig. 1 is a schematic diagram of a bidirectional power circuit suitable for an electric vehicle ac charging pile of the present invention;

FIG. 2 is a schematic diagram of switches K3 and K4;

fig. 3 is a schematic diagram of the power-taking switching principle.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the utility model relates to a bidirectional power supply circuit suitable for electric automobile alternating-current charging stake includes the switching power supply main part and gets electric switching circuit, gets electric switching circuit and be double-pole double-throw relay K, switching power supply main part connects relay K's movable contact one 2 and movable contact two 7 respectively, relay K's normally closed contact one 3 and normally closed contact two 6 are connected and are filled the electric pile input, relay K's normally open contact one 4 and normally open contact two 5 are connected and are filled the electric pile output, relay K's coil connection fills the electric pile output. When the coil is not electrified, the first moving contact 2 and the first normally closed contact 3 are closed, the second moving contact 7 and the second normally closed contact 6 are closed, and the switch power supply body automatically gets electricity from the input end; when the coil is electrified, the first moving contact 2 and the first normally open contact 4 are closed, the second moving contact 7 and the second normally open contact 5 are closed, and the switch power supply body automatically gets electricity from the output end.

The invention idea of the utility model is as follows: the power-taking switching is realized by two single-pole double-throw switches K3 and K4, wherein the switch K3 comprises a contact 31 and a contact 32, and the switch K4 comprises a contact 41 and a contact 42. The switch power supply body is connected with the switches K3 and K4, two contacts of the switch K3 and two contacts of the switch K4 are mutually isolated, the insulation and voltage resistance of the charging pile input end and the charging pile output end can be simultaneously met, the contact 31 and the contact 41 are connected to the charging pile input end, and the contact 32 and the contact 42 are connected to the charging pile output end. When the switch power supply body gets electricity from the charging pile input end, the switch K3 is turned to the contact 31, and the switch K4 is turned to the contact 41; when the switching power supply main body gets the electricity from filling the electric pile output, switch K3 hits 32 contacts, and switch K4 hits 42 contacts to this reaches and can get the electricity from filling the electric pile input, can follow the function of filling the electric pile output and getting the electricity again. In order to realize when filling the circular telegram of electric pile input, switching power supply main part is automatic to get the electricity from filling the electric pile input, when filling electric pile output circular telegram, switching power supply is automatic to get the electricity from the output, does not need artificial or through other modes control switch K3 and K4 switch, adopts the coil to control for alternating current control's double-pole double-throw relay K. The coil of the relay K supplies power for alternating current, the relay K has the same function as two switches K3 and K4, when the alternating current coil is not electrified, the switch K3 is connected to the contact 31, and the switch K4 is connected to the contact 41; when the alternating current coil is electrified, the switch K3 is connected to the contact 32, the switch K4 is connected to the contact 42, then the charging pile input ends L and N are connected to the contact 31 and the contact 41, the charging pile output ends L and N are connected to the contact 32 and the contact 42, and meanwhile, the coil is connected to the charging pile output ends L and N, so that automatic power taking switching can be achieved.

Claims

1. The utility model provides a two-way power supply circuit suitable for electric automobile alternating-current charging stake which characterized in that: including switching power supply main part and getting electric switch circuit, it is double-pole double-throw relay K to get electric switch circuit, and switching power supply main part connects relay K's movable contact one (2) and movable contact two (7) respectively, and relay K's normally closed contact one (3) and normally closed contact two (6) are connected and are filled the electric pile input, and relay K's normally open contact one (4) and normally open contact two (5) are connected and are filled the electric pile output, and relay K's coil connection fills the electric pile output.