JPS6244388B2 - - Google Patents
Info
- Publication number
- JPS6244388B2 JPS6244388B2 JP55055525A JP5552580A JPS6244388B2 JP S6244388 B2 JPS6244388 B2 JP S6244388B2 JP 55055525 A JP55055525 A JP 55055525A JP 5552580 A JP5552580 A JP 5552580A JP S6244388 B2 JPS6244388 B2 JP S6244388B2
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- electrolyte
- battery
- ignition switch
- electrode rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003792 electrolyte Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 16
- 230000007423 decrease Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/484—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring electrolyte level, electrolyte density or electrolyte conductivity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Description
【発明の詳細な説明】
本発明はバツテリーの電解液量の低下の検出を
適確にするようにした車両用バツテリーの電解液
量低下検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting a decrease in the amount of electrolyte in a vehicle battery, which is capable of accurately detecting a decrease in the amount of electrolyte in a battery.
車両用バツテリーの電解液量が一定値以下に減
少するとバツテリーは電圧が低下して所期の機能
を果さなくなるため、一定値以下に減少したこと
を検出し警告する方法がとられている。従来用い
られている車両用バツテリーの電解液量低下検出
装置には第１図に示すようなものがある。（昭和
54年６月に発行された日産サービス周報「新ニツ
サンセドリツクグロリアの紹介」の第453頁およ
び第454頁参照）。バツテリー１の電槽１ａは隔壁
１ｂにより複数個の室に区画されており、各室に
は電解液が充填されるとともに一対の電極板１ｃ
が平行に配列されている。電槽１ａの一端（図の
左端）にある室に配列された電極板の一方を接地
し、反対端にある室の一方の電極板はイグニシヨ
ンスイツチ２を介して警告ランプ３の一方の端子
に接続されている。バツテリー１の任意の室の電
極板間の所定のレベル位置に液面レベル検出用鉛
電極棒４を設け、その出力端子は抵抗R1を介し
てトランジスタTR1のベースに接続されている。
トランジスタTR1のエミツタは接地され、コレク
タは抵抗R2を介してイグニシヨンスイツチ２の
ランプ３側端子に接続されるとともに、トランジ
スタTR2のベースに接続されている。トランジス
タTR1のベースは抵抗R3を介して接地されてい
る。トランジスタTR2のコレクタは警告ランプ３
の他方の端子に接続されており、エミツタは接地
されている。 If the amount of electrolyte in a vehicle battery decreases below a certain value, the voltage of the battery will drop and it will no longer perform its intended function.Therefore, a method is used to detect that the amount of electrolyte has decreased below a certain value and issue a warning. A conventionally used device for detecting a decrease in the amount of electrolyte in a vehicle battery is shown in FIG. (Showa
(See pages 453 and 454 of the Nissan Service Bulletin ``Introducing the New Nissan Sedritsu Gloria'' published in June 1954). The container 1a of the battery 1 is divided into a plurality of chambers by a partition wall 1b, and each chamber is filled with an electrolyte and a pair of electrode plates 1c.
are arranged in parallel. One of the electrode plates arranged in the chamber at one end of the battery case 1a (left end in the figure) is grounded, and one electrode plate in the chamber at the opposite end is connected to one terminal of the warning lamp 3 via the ignition switch 2. It is connected to the. A lead electrode rod 4 for liquid level detection is provided at a predetermined level position between the electrode plates in any chamber of the battery 1, and its output terminal is connected to the base of a transistor TR1 via a resistor R1 .
The emitter of the transistor TR1 is grounded, and the collector is connected to the lamp 3 side terminal of the ignition switch 2 via a resistor R2 , and is also connected to the base of the transistor TR2 . The base of transistor TR 1 is grounded via resistor R 3 . The collector of transistor TR 2 is warning lamp 3
is connected to the other terminal of the terminal, and the emitter is grounded.
このように構成された電解液量低下検出装置に
おいて、電解液量が減少するとバツテリー上部に
設けられた鉛電極棒４が電解液から離れるためそ
れまでトランジスタTR1のベースに与えられてい
た電位が接地電位に対し失なわれてトランジスタ
TR1が非導通となり、その結果トランジスタTR2
が導通し検出電流が警告ランプ３を流れるため点
灯し運転者に電解液の不足を警告する。 In the electrolyte amount drop detection device configured in this way, when the amount of electrolyte decreases, the lead electrode rod 4 provided at the top of the battery separates from the electrolyte, so that the potential previously applied to the base of transistor TR 1 is reduced. Transistor lost to ground potential
TR 1 becomes non-conducting, resulting in transistor TR 2
conducts and a detection current flows through the warning lamp 3, which lights up to warn the driver of the lack of electrolyte.
この検出装置では電解液が限界レベル以上に満
たされている場合は電極棒４からは３〜10V程度
の電圧を生ずるため、抵抗R1、トランジスタTR1
を通つて電流I1が流れるのでトランジスタTR1が
導通する。このためトランジスタTR2は非導通と
なり警告ランプ３は点灯しない。この検出装置で
は図からわかるように、電流I1がイグニシヨンス
イツチ２のオン・オフに無関係に流れるようにな
つているため暗電流となり、いわゆるバツテリー
あがりを誘起するおそれがある。 In this detection device, when the electrolyte is filled above the limit level, a voltage of about 3 to 10 V is generated from the electrode rod 4, so the resistor R 1 and the transistor TR 1
Transistor TR 1 conducts because current I 1 flows through it. Therefore, the transistor TR2 becomes non-conductive and the warning lamp 3 does not light up. As can be seen from the figure, in this detection device, the current I 1 flows regardless of whether the ignition switch 2 is on or off, resulting in a dark current, which may induce so-called battery drain.
そこで上記暗電流の問題を解消するために、第
２図に示すように、鉛電極棒４とトランジスタ
TR2のベースとの間にダイオードＤを接続するこ
とによりイグニシヨンスイツチのオフ時の暗電流
I2を完全に遮断する方法が考えられるが、この場
合は検出時にイグニシヨンスイツチ２、抵抗
R2、ダイオードＤを通つて流れる検出電流が逆
電流になるため電極棒４が化学反応により劣化す
るという問題がある。 Therefore, in order to solve the problem of dark current mentioned above, as shown in Fig. 2, a lead electrode rod 4 and a transistor are used.
By connecting diode D between the base of TR 2 , the dark current when the ignition switch is turned off can be reduced.
One possible method is to completely shut off I 2 , but in this case, ignition switch 2, resistor
Since the detection current flowing through R 2 and the diode D becomes a reverse current, there is a problem that the electrode rod 4 deteriorates due to a chemical reaction.
本発明は、上記の点にかんがみなされたもの
で、バツテリーの消耗を低減するため、イグニシ
ヨンスイツチがオンしているときに、電解液レベ
ルが所定レベル以下であることの検知信号を警報
器へ通過させるゲート回路を設けたものである。 The present invention was made in consideration of the above points, and in order to reduce battery consumption, when the ignition switch is on, a detection signal indicating that the electrolyte level is below a predetermined level is sent to an alarm. A gate circuit is provided to allow the signal to pass through.
次に第３図を参照して本発明を説明する。第３
図は本発明の一実施例を示しており、第１図と同
じ参照数字は同じ構成部分を示す。図において、
鉛電極棒４とトランジスタTR1のベースとの間に
抵抗R′1とゲート回路としてのトランジスタTR3
とを直列に接続し、このトランジスタTR3のベー
スは抵抗R4を介してイグニシヨンスイツチ２の
警告ランプ側端子に接接されるとともに抵抗R5
を介してバツテリー１の負極に接続されている。 Next, the present invention will be explained with reference to FIG. Third
The figure shows one embodiment of the invention, in which the same reference numerals as in FIG. 1 indicate the same parts. In the figure,
A resistor R′ 1 and a transistor TR 3 as a gate circuit are connected between the lead electrode rod 4 and the base of the transistor TR 1 .
are connected in series, and the base of this transistor TR 3 is connected to the warning lamp side terminal of the ignition switch 2 via a resistor R 4 and a resistor R 5
It is connected to the negative electrode of the battery 1 via the terminal.
上記構成の検出装置において、イグニシヨンス
イツチ２のオフ時にはトランジスタTR3のベース
電流が流れないためトランジスタTR3はオフ状態
となり、このため電極棒４から流れ出る暗電流を
防止することができる。次にイグニシヨンスイツ
チをオンした場合、トランジスタTR3のベース電
位が上昇し、電槽内に電解液が満たされていて電
極棒４が電解液中に沈んでいるときは電極棒４に
電圧が発生するからトランジスタTR3は導通す
る。その結果トランジスタTR1は導通しトランジ
スタTR2は非導通となり、警告ランプ３は点灯し
ない。 In the detection device having the above configuration, when the ignition switch 2 is off, the base current of the transistor TR 3 does not flow, so the transistor TR 3 is in the off state, and therefore dark current flowing from the electrode rod 4 can be prevented. Next, when the ignition switch is turned on, the base potential of the transistor TR 3 rises, and if the electrolyte is filled in the battery container and the electrode rod 4 is submerged in the electrolyte, a voltage is applied to the electrode rod 4. Since this occurs, transistor TR3 becomes conductive. As a result, the transistor TR 1 becomes conductive and the transistor TR 2 becomes non-conductive, and the warning lamp 3 does not light up.
次に、イグニシヨンスイツチ２をオンした状態
で電解液が不足していると電極棒４に電圧を発生
せず、このためトランジスタTR1のベース電位は
低くなり、トランジスタTR1は導通しない。従つ
てトランジスタTR2は導通し警告ランプ３が点灯
する。 Next, when the ignition switch 2 is turned on and there is insufficient electrolyte, no voltage is generated at the electrode rod 4, so the base potential of the transistor TR1 becomes low and the transistor TR1 does not conduct. Therefore, the transistor TR2 becomes conductive and the warning lamp 3 lights up.
このように、上記実施例においては、イグニシ
ヨンスイツチ２のオフ時にゲート回路としてのト
ランジスタTR3が遮断されるため電極棒からの暗
電流を遮断することができる。 In this way, in the above embodiment, the transistor TR3 serving as the gate circuit is cut off when the ignition switch 2 is turned off, so that the dark current from the electrode rod can be cut off.
第４図は第３図におけるゲート回路としてのト
ランジスタTR3の代りに電界効果トランジスタ
FET５を用いた実施例であり、イグニシヨンス
イツチのオフ時には、FET５がオフとなつて電
極棒４との接続を遮断することにより電極棒から
流れ出る暗電流を遮断することができる。本発明
におけるゲート回路としてはトランジスタ、
FETのほかホトカプラーや機械的リレーの接点
を用いることができる。 Figure 4 shows a field effect transistor in place of the transistor TR 3 as the gate circuit in Figure 3.
This is an embodiment using FET 5, and when the ignition switch is turned off, FET 5 is turned off and the connection with electrode rod 4 is cut off, thereby making it possible to cut off the dark current flowing from the electrode rod. As the gate circuit in the present invention, a transistor,
In addition to FETs, photocouplers and mechanical relay contacts can be used.
以上説明したように、本発明においては、バツ
テリーに対してイグニシヨンスイツチを介してト
ランジスタと警告手段とを直列に接続し、このト
ランジスタのベースとバツテリーに設けた電極棒
との間にゲート回路を接続し、このゲート回路を
イグニシヨンスイツチのオン時にオンするように
構成したので、イグニシヨンスイツチのオフ時に
はバツテリーからの暗電流が流れることがない。
このためバツテリーの過放電によるバツテリーあ
がりがなく、また、電極棒に流れる電流は、アー
ス方向へ流れるため電極棒が化学反応を起して劣
化することもない。本発明の検出装置によれば、
暗電流を防止することができるのでバツテリーの
消耗を低減できるとともにイグニシヨンスイツチ
を除けばメカニカル機構は全く用いないで済むの
で装置の寿命が長くしかも信頼性が極めて高い。
さらに回路素子は小電力の半導体および1/4ワツ
ト以下の抵抗体のみで構成できるから構成がコン
パクトになりコストも安くできる。 As explained above, in the present invention, a transistor and a warning means are connected in series to the battery via an ignition switch, and a gate circuit is connected between the base of the transistor and the electrode provided on the battery. Since this gate circuit is configured to be turned on when the ignition switch is turned on, dark current from the battery will not flow when the ignition switch is turned off.
Therefore, the battery does not run out due to over-discharge of the battery, and since the current flowing through the electrode rod flows in the direction of the ground, the electrode rod does not deteriorate due to chemical reactions. According to the detection device of the present invention,
Since dark current can be prevented, battery consumption can be reduced, and since there is no need to use any mechanical mechanism except for the ignition switch, the device has a long life and is extremely reliable.
Furthermore, since the circuit elements can be constructed using only low-power semiconductors and resistors of 1/4 watt or less, the construction can be made compact and costs can be reduced.
第１図は従来の車両用バツテリーの電解液量低
下検出装置の電気回路、第２図は第１図に示す検
出装置を改良したものの電気回路、第３図は本発
明による電解液量低下検出装置の電気回路、第４
図は第３図の一部変形例である。
１…バツテリー、２…イグニシヨンスイツチ、
３…警告ランプ、４…液面レベル検出用電極棒、
５…ゲート回路、R1〜R3…抵抗、TR1〜TR3…ト
ランジスタ。
Fig. 1 shows an electric circuit of a conventional vehicle battery electrolyte level drop detection device, Fig. 2 shows an electric circuit of an improved detection device shown in Fig. 1, and Fig. 3 shows an electrolyte level drop detection device according to the present invention. Electrical circuit of the device, 4th
The figure is a partially modified example of FIG. 3. 1...Battery, 2...Ignition switch,
3...warning lamp, 4...electrode rod for liquid level detection,
5...Gate circuit, R1 to R3 ...Resistor, TR1 to TR3 ...Transistor.
Claims (1)
であることの検知信号を出力する電解液量検出手
段と、イグニシヨンスイツチがオンしているとき
に前記検出手段の出力を通過させるゲート回路
と、該ゲート回路を通過する出力により作動する
警報手段とを有することを特徴とする車両用バツ
テリーの電解液量低下検出装置。1. An electrolyte amount detection means that outputs a detection signal indicating that the electrolyte level of the battery is below a predetermined level, a gate circuit that allows the output of the detection means to pass through when the ignition switch is on, and the gate. 1. A device for detecting a decrease in the amount of electrolyte in a vehicle battery, comprising an alarm means activated by an output passing through a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5552580A JPS56152172A (en) | 1980-04-28 | 1980-04-28 | Electrolyte level drop detecting device for battery of vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5552580A JPS56152172A (en) | 1980-04-28 | 1980-04-28 | Electrolyte level drop detecting device for battery of vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56152172A JPS56152172A (en) | 1981-11-25 |
| JPS6244388B2 true JPS6244388B2 (en) | 1987-09-19 |
Family
ID=13001125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5552580A Granted JPS56152172A (en) | 1980-04-28 | 1980-04-28 | Electrolyte level drop detecting device for battery of vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56152172A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58192471U (en) * | 1982-06-17 | 1983-12-21 | 日本精機株式会社 | Battery liquid shortage alarm device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5195732U (en) * | 1975-01-31 | 1976-07-31 |
-
1980
- 1980-04-28 JP JP5552580A patent/JPS56152172A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56152172A (en) | 1981-11-25 |
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