CN2517163Y

CN2517163Y - DC charger

Info

Publication number: CN2517163Y
Application number: CN 01255786
Authority: CN
Inventors: 文天恒
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-19
Filing date: 2001-09-19
Publication date: 2002-10-16
Anticipated expiration: 2011-09-19

Abstract

The utility model relates to a direct current charger belonging to the technical field of battery charging, in particular to a direct current charger that directly uses direct current power supply to charge batteries. The technical proposal of the utility model is that, one end of a USB connector is connected with a direct current power supply, the other end of the USB connector is connected with the socket of a circuit board. The utility model uses prior common direct current power supply, and the direct current power supply is directly connected with the circuit board by a USB connector; the circuit board only needs to reduce voltage to charge batteries, and AC/DC conversion is unnecessary. Therefore the utility model has the advantages of simple structure, relatively low cost, and no potential safety hazard of high voltage.

Description

Dc charger

Technical field:

The utility model relates to the battery boosting technology field, refers in particular to a kind of DC power supply of utilizing directly to the dc charger of battery charge.

Background technology:

At present, charger on the market, its power supply input is generally alternating current, through behind the step-down rectifier of charger itself, to battery charge; Because charger itself needs to convert alternating current to direct current, make the potential safety hazard that it exists high-tension electricity to cause, this kind product needs the electrical safety certification by the specification strictness as coming into the market, and, also make that its cost is higher.

Summary of the invention:

The purpose of this utility model is to provide a kind of power supply to be input as direct current, no AC/DC conversion, direct dc charger to battery charge.

The utility model is achieved by the following technical solution: USB connector one end connects DC power supply, and the other end is connected with the socket of circuit board; The cathode output end of circuit board is connected with connector, and the shell fragment of contact charging battery cathode is connected on negative pole and the cradle; The conductive contact surfaces of connector exposes the opening on the cradle, links to each other with rechargeable battery is anodal.

The utility model utilizes existing conventional DC power supply, directly DC power supply is connected on the circuit board by USB connector, after circuit board only passes through step-down, promptly, need not to carry out the AC/DC conversion, make it simple in structure battery charge, cost is lower, does not have the potential safety hazard of high pressure.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is further specified:

Accompanying drawing 1 is the utility model three-dimensional exploded view;

Accompanying drawing 2 is the utility model stereogram.

Embodiment:

See accompanying drawing 1,2, the utility model includes USB connector 1, loam cake 2, connector 3, cradle 4, circuit board 5, base 6, connect loam cake 2 above the cradle 4, the bottom surface connects base 6, circuit board 5 places between cradle 4 and the base 6, connector 3 is fixed in 5 of cradle 4 and circuit boards, and a groove 41 of placing rechargeable battery 7 is arranged on the cradle 4; USB connector 1 one ends connect DC power supply, and the other end is connected with the socket 51 of circuit board 5; The cathode output end of circuit board 5 is connected with connector 3, and the shell fragment of contact charging battery 7 negative poles is connected on negative pole and the cradle 4; The conductive contact surfaces of connector 3 exposes the opening 42 on the cradle 4, with 7 anodal linking to each other of rechargeable battery; Rechargeable battery 7 is 2A, 3A battery; USB connector 1 is output as the 5V direct current.

When using the utility model, earlier rechargeable battery 7 is placed in the groove 41 of cradle 4, then, with USB connector 1 circuit board 5 and DC power supply are connected, after the 5V direct current step-down of circuit board 5 with input, anodal by connector 3 and rechargeable battery 7 anodal connections, negative pole joins with rechargeable battery 7 by means of the shell fragment of contact charging battery 7 negative poles on the cradle 4, thereby form a circuit loop, to rechargeable battery 7 chargings, directly utilize direct current by the utility model, itself need not the AC/DC conversion, structure is comparatively simple, and security performance is good.

Claims

1, dc charger, include: USB connector (1), loam cake (2), connector (3), cradle (4), circuit board (5), base (6), connect loam cake (2) above the cradle (4), the bottom surface connects base (6), circuit board (5) places between cradle (4) and the base (6), connector (3) is fixed between cradle (4) and circuit board (5), and the groove (41) of a placement rechargeable battery (7) is arranged on the cradle (4); It is characterized in that: USB connector (1) one end connects DC power supply, and the other end is connected with the socket (51) of circuit board (5); The cathode output end of circuit board (5) is connected with connector (3), and the shell fragment that negative pole and cradle (4) are gone up contact charging battery (7) negative pole is connected.

2, dc charger according to claim 1 is characterized in that: the conductive contact surfaces of connector (3) exposes the opening (42) on the cradle (4).