JPH0275950U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の第１実施例の機能ブロツク図
、第２図はその一具体例を示す回路図、第３図は
本考案の第２実施例の機能ブロツク図、第４図は
その一具体例を示す回路図、第５図はＮｉＣｄ電
池の充電特性を示す図、第６図は従来の充電回路
の一例を示す回路図である。 ３０，５０……充電器、４０，６０……電池装
着部、３２，５２……スイツチ、３３，５３……
定電流回路、３４，５４……電圧検知回路、３５
……サーミスタ異常検知回路、５５……電流検知
回路。 Fig. 1 is a functional block diagram of the first embodiment of the present invention, Fig. 2 is a circuit diagram showing a specific example thereof, Fig. 3 is a functional block diagram of the second embodiment of the present invention, and Fig. 4 is its functional block diagram. FIG. 5 is a circuit diagram showing a specific example, FIG. 5 is a diagram showing charging characteristics of a NiCd battery, and FIG. 6 is a circuit diagram showing an example of a conventional charging circuit. 30,50...Charger, 40,60...Battery mounting part, 32,52...Switch, 33,53...
Constant current circuit, 34, 54... Voltage detection circuit, 35
...Thermistor abnormality detection circuit, 55...Current detection circuit.

Claims (1)

【実用新案登録請求の範囲】 (1) 定電流回路から出力された電流を二次電池
に供給してこれを充電するようにした充電回路に
おいて、該二次電池の周囲温度を検知する周囲温
度検知手段と、該周囲温度検知手段の異常を検知
する手段とを設け、該周囲温度検知手段が異常を
検知した時に、前記二次電池の充電を停止または
低減させるようにしたことを特徴とする充電回路
。 (2) 定電流回路から出力された電流を二次電池
に供給してこれを充電するようにした充電回路に
おいて、充電電流を検知してこれが基準電流以上
か否かを判定する手段と、基準電流以上と判定さ
れた時に、一定期間該充電を停止する手段とを設
けたことを特徴とする充電回路。[Scope of Claim for Utility Model Registration] (1) In a charging circuit that supplies current output from a constant current circuit to a secondary battery to charge it, the ambient temperature at which the ambient temperature of the secondary battery is detected. A detection means and a means for detecting an abnormality in the ambient temperature detection means are provided, and when the ambient temperature detection means detects an abnormality, charging of the secondary battery is stopped or reduced. charging circuit. (2) In a charging circuit that supplies current output from a constant current circuit to a secondary battery to charge it, a means for detecting a charging current and determining whether or not this is equal to or higher than a reference current; A charging circuit comprising means for stopping the charging for a certain period of time when it is determined that the current is greater than or equal to the current.