JPH0244846U

JPH0244846U -

Info

Publication number: JPH0244846U
Application number: JP12346588U
Authority: JP
Priority date: 1988-09-22
Filing date: 1988-09-22
Publication date: 1990-03-28

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す回路図、第２図
は上記実施例による充電特性を示すタイムチヤー
ト、第３図は従来の充電器を示す回路図、第４図
は上記従来例による充電特性を示すタイムチヤー
トである。２……整流器、５……逆変換器、１４……制御
器、２１……比較器、ＲＹ_３……リレー。 Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a time chart showing charging characteristics according to the above embodiment, Fig. 3 is a circuit diagram showing a conventional charger, and Fig. 4 is according to the above conventional example. This is a time chart showing charging characteristics. 2... Rectifier, 5... Inverter, 14... Controller, 21... Comparator, RY ₃ ... Relay.

補正平１．２．２８考案の名称を次のように補正する。考案の名称充電器実用新案登録請求の範囲、図面の簡単な説明を
次のように補正する。Amendment 1.2.28 Hei 1. The name of the invention is amended as follows. Title of the invention: Charger The scope of the claims for utility model registration and the brief description of the drawings are amended as follows.

【実用新案登録請求の範囲】 (1) 交流を直流に変換する整流器、該整流器の
出力を交流に変換する逆変換器、逆変換器の出力
を直流変換してバツテリに供給する整流器、バツ
テリーの充電電流が電流設定値になるように上記
逆変換器を制御する制御器、バツテリーの充電電
圧を所定充電電圧より低い電圧設定値と比較して
前者が後者に達した時に出力する比較器、該比較
器の出力により付勢される回路とを有し、該回路
の付勢と同期して、上記電流設定値を該電流設定
値より低レベルの値を持つ電流設定値に切替える
ことを特徴とする充電器。 (2) 逆変換器が、２個のコンデンサと２個のス
イツチング素子をブリツジ接続してなり、高周波
駆動される単相逆変換器であつて、その出力変圧
器が中間タツプ付高周波変圧器であることを特徴
とする請求項１記載の充電器。[Claims for Utility Model Registration] (1) A rectifier that converts alternating current to direct current, an inverter that converts the output of the rectifier to alternating current, a rectifier that converts the output of the inverse converter to direct current and supplies it to a battery, a controller that controls the inverter so that the charging current reaches a current set value; a comparator that compares the charging voltage of the battery with a voltage set value lower than a predetermined charging voltage and outputs an output when the former reaches the latter; and a circuit energized by the output of the comparator, and in synchronization with the energization of the circuit, the current set value is switched to a current set value having a value at a lower level than the current set value. charger. (2) The inverter is a single-phase inverter configured by bridge-connecting two capacitors and two switching elements and driven at high frequency, and the output transformer is a high-frequency transformer with an intermediate tap. The charger according to claim 1, characterized in that:

【図面の簡単な説明】第１図は本考案の実施例を示す回路図、第２図
は上記実施例による充電特性を示すタイムチヤー
ト、第３図は従来の充電器を示す回路図、第４図
は上記従来例による充電特性を示すタイムチヤー
トである。２……整流器、５……逆変換器、６……絶縁変
圧器、７，８……ダイオード整流器、１４……制
御器、２１……比較器、ＲＹ_３……リレー。[Brief Description of the Drawings] Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a time chart showing charging characteristics according to the above embodiment, Fig. 3 is a circuit diagram showing a conventional charger, and Fig. 3 is a circuit diagram showing a conventional charger. FIG. 4 is a time chart showing charging characteristics according to the conventional example. 2... Rectifier, 5... Inverter, 6... Isolation transformer, 7, 8... Diode rectifier, 14... Controller, 21... Comparator, RY ₃ ... Relay.

Claims

[Scope of utility model registration request]

A rectifier that converts alternating current to direct current, an inverter that converts the output of the rectifier to alternating current, a controller that controls the inverter so that the battery charging current becomes a current setting value, and the inverter sends out In a charger that converts alternating current to direct current and charges a battery with a constant current to a predetermined voltage, a comparator that compares the charging voltage of the battery with a voltage setting value lower than the predetermined voltage and outputs an output when the former reaches the latter; and a switch circuit energized by the output of the comparator, and when the switch circuit is energized, the current set value is switched to a current set value having a value at a lower level than the current set value. charger.