CN201663469U

CN201663469U - Electric vehicle safety charger with timing power-off function

Info

Publication number: CN201663469U
Application number: CN2010200033534U
Authority: CN
Inventors: 姚晓宁; 韩东起; 李进
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2010-01-03
Filing date: 2010-01-03
Publication date: 2010-12-01
Anticipated expiration: 2020-01-03

Abstract

An electric vehicle safety charger with the timing power-off function is composed of a timing module, a multi-shift timing switch, a relay and a charger; wherein, the multi-shift timing switch is connected with the timing module to preset the charging time, when 220V voltage is inputted to the timing module, the timing module is connected with the normally open contact of the relay and is connected with the charger in parallel to form a power supply signal loop circuit; the multi-shift timing switch is connected with the timing module to control the on-off states of the relay, so as to prevent the overcharging and heat generation of the charger and accordingly protect the charger against damage; the multi-shift timing switch can be used for setting charging time, when the preset time is up, the timing module drives the relay coil to disconnect, so as to power off the charger, thereby protecting the charger and improving the service life of the charger.

Description

A kind of electric motor car safe charging device of timing power down function

Technical field:

The utility model relates to a kind of electric car charger, especially relates to a kind of regularly safe electric car charger of power down function that has.

Background technology:

Along with popularizing rapidly of electric motor car, the useful life of electric car charger and security performance also need enough to pay attention to.At present, commercially available electric car charger function relative deficiency, even storage battery is full of, charger is still in work, and often situation about occurring is, the user plugs and forgets for a long time after the charger charging and pull up plug, so not only can cause energy loss, simultaneously charger works long hours and also can influence the useful life of charger and storage battery and have electrical safety hidden danger, decreases ring as heating, when serious even unsafe factor such as initiation fire.

Summary of the invention:

The utility model provides a kind of electric motor car safe charging device of timing power down function at the deficiencies in the prior art.

For realizing above purpose, the technical solution adopted in the utility model is:

A kind of electric motor car safe charging device of timing power down function, form by time block, many grades of timing switches, relay, chargers, wherein many grades of timing switches are connected with time block, can set the charging interval, 220V voltage incoming timing module, time block links to each other with relay normally open point, and in parallel with charger, forms the power supply signal loop.

Described time block is made up of single-chip microcomputer, optic coupling element.

Described relay can be selected the identical parameters solid-state relay.

The utility model adopts many grades of timing switches to be connected control relay with time block and opens and closes function, prevent the charger overcharge, generate heat, cause charger to damage easily, and many grades of timing switches can be set the charging interval, after timing arrives, time block drives relay coil and disconnects and make the charger dead electricity, guarantees safe, useful life of prolonging charger of charger.

Description of drawings:

Fig. 1 is a utility model principle distribution map.

Fig. 2 is the utility model circuit diagram.

Fig. 3 is the independent power supply unit circuit diagram of utility model.

Embodiment:

A kind of electric motor car safe charging device of timing power down function, form by time block 1, many grades of timing switches 2, relay 3, chargers 4, time block 1 is made up of single-chip microcomputer, optic coupling element, set the charging interval by many grades of timing switches 2, it is six grades, can be set to 4,6,8,12,24 and the RST gear, 4,6,8,12,24 and be the charging hourage, the RST shelves are the not shelves that reset under the powering-off state of charger; The actual-gear number also can according to circumstances suitably be adjusted; Single-chip microcomputer cooperates crystal oscillating circuit to constitute timing control unit, picks up counting according to the timing gear of gathering, and the time outputs a control signal to optic coupling element to the back by the P3.0 pin, and control relay 3KA is switched on or switched off, and realizes the charging control to charger 4 parts.

The utility model adopts direct current 5V power supply, is furnished with independent power supply unit; Relay 3 same selection coil voltages are direct current 5V, contact alternating current 220V, 20A; Also can select the solid-state relay of identical parameters.At first timing is set as 6 hours by multi-gear switch, the P1.1 pin of AT89C2051 is a low level signal, and single-chip microcomputer is started working according to ready-made program, make P3.0 output high level, it is electric by optic coupling element KA to be got, and KA contacting charging circuit charges a battery; Arrive 6 hours when the charging interval, the P3.0 output low level, the KA coil losing electricity, the contact disconnects charging circuit, reaches the purpose of protection.What need emphasize is, the one, and utility model also has regularly memory function, and in charging process, it is 8 hours that time value is readjusted, and system can work on original timing time basis; The 2nd, by the maximum stream time of program setting, be generally 24 hours.

The utility model is compared with prior art charging simultaneously to electric motor car, but free setting and control charging interval, and the time spent does not make the charger deenergization automatically; Reach energy-conservation, prolong charger and storage battery service life, reduce the purpose of electrical safety hidden danger.

Claims

1. electric motor car safe charging device of power down function regularly, it is characterized in that: wherein many grades of timing switches are connected with time block, can set the charging interval, 220V voltage incoming timing module, time block links to each other with relay normally open point, and in parallel with charger, forms the power supply signal loop.

2. the electric motor car safe charging device of a kind of timing power down function according to claim 1, it is characterized in that: described time block is made up of single-chip microcomputer, optic coupling element.

3. the electric motor car safe charging device of a kind of timing power down function according to claim 1, it is characterized in that: described relay can be selected the identical parameters solid-state relay.