Electrodeless safety charger circuit
A charger and circuit technology, applied to battery circuit devices, current collectors, circuit devices, etc., can solve problems such as fire, burning of batteries or chargers, and failure of charger output terminals to short-circuit
Inactive Publication Date: 2012-07-11
郭振华
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Problems solved by technology
[0002] At present, there are many kinds of battery chargers, but they all have a common feature, that is, the battery must be connected with the correct polarity, and the output terminal of the charger must not be short-circuited, otherwise the battery or charger will be burned, and it may cause a fire in severe cases.
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[0007] The circuit structure and working principle are further described below with reference to Figures 1 and 2: a two-polarity identification circuit and a rectification polarity conversion circuit are included between the output end of the power transformer and the two charging electrodes. The two-polarity identification circuit consists of the relay J2 coil in parallel. The polarity identification diode D1 is connected in series with the J1 coil between the two-polarity output terminals. The diode D2 is connected in parallel with both ends of the J1 coil through the K1 switch. The normally closed contact of K1 is connected to J1 and J2. On the coil series connection point, and the polarities of D1 and D2 should be consistent on the two-polarity output ends, a polarity identification circuit is formed; the polarity conversion circuit is connected by the transformer output end to the polarity output end and (K1, K2) normally open respectively. Contact, the two ends of the rec...
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The invention relates to an electrodeless safety charger circuit in the field of battery charging circuits. The technical scheme is as follows a two polarity identification circuits and a rectification polarity conversion circuit are arranged between the output end of a power supply transformer and two charge electrodes. The two polarity identification circuits are formed as follows: a relay J2 coil is connected in parallel with a polarity identification diode D1 and then the coil J2 and the coil J1 are serially connected between two polarity output ends, a diode D2 is connected in parallel with two ends of the coil J1through a switch K1, a normally-closed contact of the switch K1 is connected to a serial connection point of the coil J1 and the coil J2, and polarities of the diode D1 and the diode D2 are kept consistent on the two polarity output ends; and polarity conversion circuit is formed as follows: the output end of the transformer is respectively connected with one ends of the polarity output ends and normally-open contacts of a switch K2 and the switch K1, two ends of a rectification diode D3 are respectively connected between the other ends of the polarity output ends and a movable contact of the switch K2, polarities of joints of the D2 and the D3 are opposite, and the relays J1 and J2 respectively control the switches K1 and K2. The electrodeless safety charger circuit has a simple structure, is convenient for use, and protects a charger under the condition of short circuit of the output ends, can be accessed at any polarity for correctly charging a battery, and is especially suitable for charging storage batteries and the like.
Description
Technical field: [0001] The invention relates to a stepless safety charger circuit in the field of battery charging circuits. Background technique: [0002] At present, there are many kinds of battery chargers, but they all have a common feature. The battery must be connected with the correct polarity, and the output end of the charger must not be short-circuited, otherwise the battery or the charger will be burned, which may cause a fire in severe cases. Invention content: [0003] The present invention is aimed at the defects existing in the prior art. Provides a stepless safety charger circuit with automatic polarity identification and short circuit protection. [0004] The technical scheme of the invention is as follows: between the output end of the power transformer and the two charging electrodes, a two-polarity identification circuit and a rectifying polarity conversion circuit are included. The two-polarity identification circuit consists of the relay J2 coil in...
Claims
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IPC IPC(8): H02J7/00G01R19/14G01R31/02
Inventor 郭振华
Owner 郭振华