JPH0543420Y2 - - Google Patents
Info
- Publication number
- JPH0543420Y2 JPH0543420Y2 JP1986161948U JP16194886U JPH0543420Y2 JP H0543420 Y2 JPH0543420 Y2 JP H0543420Y2 JP 1986161948 U JP1986161948 U JP 1986161948U JP 16194886 U JP16194886 U JP 16194886U JP H0543420 Y2 JPH0543420 Y2 JP H0543420Y2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- battery
- nominal
- low
- pack
- 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 - Lifetime
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、公称電圧の異なる電池を区別すると
共に、それぞれについて電圧低下を検出する機能
を有した電池電圧検出回路に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a battery voltage detection circuit that has a function of distinguishing between batteries having different nominal voltages and detecting a voltage drop for each battery.
携帯用無線機の電源に使用される蓄電池は、長
時間の消費で出力電圧が低下すると無線機の動作
に影響を与えるたり、蓄電池そのものの寿命を縮
めたりするため、電圧低下警報を出して電池交換
を促がす方式が多い。一方、無線機によつては公
称電圧の異なる２種類の電池を使い分け、公称電
圧の低い電池では送信パワーを低く固定し、公称
電圧の高い電池では送信パワーの高低切替えを可
能とするものがある。この場合、公称電圧の低い
電池使用時に高い送信パワーを出す誤制御をする
と、低い送信パワーより高いパワーが出るので無
線機連続使用時間を短縮したり、法律上の問題も
残す。また、使用周波数に応じて送信パワーの高
低切替えを行う場合には明らかに不都合を生ず
る。
When the output voltage of the storage battery used as a power source for a portable radio device decreases due to long-term consumption, it may affect the operation of the radio device or shorten the life of the storage battery itself. There are many ways to encourage exchange. On the other hand, some radios use two types of batteries with different nominal voltages, with batteries with a lower nominal voltage fixing the transmission power to a low level, and batteries with a higher nominal voltage allowing the transmission power to be switched between high and low. . In this case, if the battery is erroneously controlled to produce a high transmission power when using a battery with a low nominal voltage, the radio will output a higher power than the lower transmission power, which may shorten the continuous use time of the radio or create legal problems. Further, when switching the transmission power to high or low depending on the frequency used, an obvious problem arises.
上述した背景から使用中の電池の公称電圧を識
別し、且つその電池電圧が定格値より一定値以上
低下していないかを検出する回路が必要になる。 In light of the above-mentioned background, a circuit is required that identifies the nominal voltage of a battery in use and detects whether the battery voltage has fallen below the rated value by a certain value or more.
第５図はこの種の回路の従来例で、１０は高電
圧用パツク、２０は低電圧用パツク、３０は電池
電圧検出回路を含む無線機本体である。高電圧用
パツク１０は例えばNi−Cd蓄電池10本を直列に
して内蔵し、公称12Vの電圧を出力できる。これ
に対し、低電圧用パツク２０は同蓄電池６本を直
列にして内蔵し、公称7.2Vの電圧を出力できる。
高電圧用パツク１０は＋端子１１と−端子１２の
他に第４図に示すような金属片１３を備え、これ
がパツク接続時にCPU３１の入力I3にグランドレ
ベルGNDを与える。これに対し、＋端子２１と−
端子２２だけの低電圧用パツク２０の接続時は入
力I3が＋5Vにプルアツプされるので、CPU３１
は高電圧用パツク１０の場合と区別できる。 FIG. 5 shows a conventional example of this type of circuit, where 10 is a high voltage pack, 20 is a low voltage pack, and 30 is a radio device body including a battery voltage detection circuit. The high voltage pack 10 includes, for example, ten Ni-Cd storage batteries connected in series, and can output a nominal voltage of 12V. On the other hand, the low voltage pack 20 has six storage batteries connected in series and can output a nominal voltage of 7.2V.
In addition to the + terminal 11 and the - terminal 12, the high voltage pack 10 includes a metal piece 13 as shown in FIG. 4, which applies a ground level GND to the input I3 of the CPU 31 when the pack is connected. On the other hand, the + terminal 21 and the -
When the low voltage pack 20 with only the terminal 22 is connected, the input I3 is pulled up to +5V, so the CPU 31
can be distinguished from the case of the high voltage pack 10.
一方、電源スイツチ３２をオンにすると、電池
電圧がコンパレータ３３，３４で比較され、その
出力がCPU３１の入力I1，I2になる。コンパレー
タ３３は高電圧用パツク１０に対する電圧低下警
報用基準値VHEを有し、またコンパレータ３４は
低電圧用パツク２０に対する電圧低下警報用基準
値VLEを有するので、CPU３１はこれらの入力
I1，I2がハイレベルになつたときにLCD表示部３
５に電圧低下警報表示（例えば「LOW
BATT」）をすることができる。尚、３６は安定
した5V電圧を作るレギユレータ、３７，３８は
＋、−の電源端子である。 On the other hand, when the power switch 32 is turned on, the battery voltages are compared by the comparators 33 and 34, and the outputs thereof become the inputs I 1 and I 2 of the CPU 31. Since the comparator 33 has a voltage drop alarm reference value V HE for the high voltage pack 10 and the comparator 34 has a voltage drop alarm reference value V LE for the low voltage pack 20, the CPU 31 uses these inputs.
When I 1 and I 2 become high level, LCD display section 3
Voltage drop alarm display (for example, “LOW
BATT”). Note that 36 is a regulator that produces a stable 5V voltage, and 37 and 38 are + and - power supply terminals.
上述した電池電圧検出方式では金属片１３の有
無の違いを有する２種類のパツク１０，２０が必
要となるので、パツク１０，２０の上面に共通部
品が使用できない欠点がある。
The above-described battery voltage detection method requires two types of packs 10 and 20 with and without the metal piece 13, so there is a drawback that common parts cannot be used on the upper surfaces of the packs 10 and 20.
本考案は、電池電圧を直接検出することで電池
の種類を判別し、且つそれぞれについての電圧低
下も検出可能とするものである。 The present invention makes it possible to determine the type of battery by directly detecting the battery voltage, and also to detect voltage drops for each battery.
本考案は、公称電圧の異なる２種類の電池のい
ずれかが接続される電源端子の電圧を検出し、該
電圧が第１のしきい値VHLを越えているときは公
称電圧VHの高電圧用電池と判断して第２のしき
い値VHE（VH＞VHE＞VHL）を設定し、該電圧が
VHE以下であると電圧低下検出信号を出し、一方
該電圧がVHL未満のときは公称電圧VLの低電圧用
電池と判断して第３のしきい値VLE（VLE＜VL）を
設定し、該電圧がVLE以下である時のみ電圧低下
検出信号を出すようにしてなることを特徴とする
ものである。
The present invention detects the voltage of the power supply terminal to which one of two types of batteries with different nominal voltages is connected, and when the voltage exceeds the first threshold V HL , the nominal voltage V H is increased. It is determined that the battery is for voltage, and the second threshold value V HE (V H > V HE > V HL ) is set, and the voltage is
If the voltage is lower than V HE , a voltage drop detection signal is issued, and if the voltage is lower than V HL , it is determined that the battery is a low voltage battery with the nominal voltage V L , and the third threshold value V LE (V LE < V L ), and a voltage drop detection signal is output only when the voltage is below VLE .
公称電圧の異なる２種類の電池が接続される電
源端子の電圧は、第２図に示すように電池の公称
電圧VH，VLと放電特性によつて異なる値を示す。
そこで、VH＞VHL＞VLなるしきい値VHLを用いれ
ば接続された電池が高電圧用か低電圧用かを識別
できる。また、VH＞VHE＞VHLなるしきい値VHEを
用いれば高電圧用電池の電圧低下（Ａ点）を検出
でき、VL＞VLEなるしきい値を用いれば低電圧用
電池の電圧低下（Ｂ点）を検出できる。
As shown in FIG. 2, the voltage at the power supply terminal to which two types of batteries with different nominal voltages are connected shows different values depending on the battery's nominal voltages V H and V L and discharge characteristics.
Therefore, by using a threshold value V HL such that V H > V HL > V L , it is possible to identify whether the connected battery is for high voltage or low voltage. In addition, by using the threshold V HE where V H > V HE > V HL , it is possible to detect a voltage drop (point A) in a high voltage battery, and by using the threshold V L > V LE , it is possible to detect a voltage drop in a low voltage battery. voltage drop (point B) can be detected.
尚、Ｃ点のようにVHL以下に低下した高電圧用
電池を接続すると、正常な低電圧用電池の接続と
みなされるが、このようなケースは希であり、ま
たすぐに低電圧用電池の電圧低下を検出するしき
い値VLEに達して電池の電圧低下を検出できるの
で実用上問題にはならない。 If you connect a high-voltage battery that has dropped below V HL , as shown at point C, it is considered a normal low-voltage battery connection, but such cases are rare, and the low-voltage battery is immediately disconnected. Since the battery voltage drop can be detected when the threshold V LE for detecting a voltage drop is reached, this is not a practical problem.
第１図は本考案の一実施例を示す回路図で、電
源端子３７，３８には高電圧用パツク１０（また
は低電圧用パツク２０）の端子１１，２１、１
２，２２が接続される。本例ではこの電源端子の
電圧＋Ｂを抵抗R1，R2で分割し、その分割電圧
Vin＝＋Ｂ・R2／（R1＋R2）をＡ／Ｄコンバー
タ３９のダイナミツクレンジ内に納める。そして
該Ａ／Ｄコンバータのデジタルデータ出力を
CPU３１に入力して第３図の処理を行う。尚、
CPU３１とＡ／Ｄコンバータ３９には１チツプ
化されているものを使用してもよい。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, in which power supply terminals 37, 38 are connected to terminals 11, 21, 1 of high voltage pack 10 (or low voltage pack 20).
2 and 22 are connected. In this example, the voltage +B of this power supply terminal is divided by resistors R 1 and R 2 , and the divided voltage
Vin=+B·R 2 /(R 1 +R 2 ) is kept within the dynamic range of the A/D converter 39. And the digital data output of the A/D converter
The data is input to the CPU 31 and the processing shown in FIG. 3 is performed. still,
The CPU 31 and the A/D converter 39 may be integrated into one chip.
第３図の処理では第２図のしきい値VHE，VHL，
VLEがそれぞれ８ビツトデータの下位５ビツトを
使用して＄15，＄13，＄0Dとして示されている。
高電圧電池の検出時には高電圧電池検出フラグを
ONにし、また低電圧電池の検出時には該フラグ
をOFFにする。そして、該フラグがONのときに
Ａ／Ｄデータが＄15未満に低下するか、該フラグ
がOFFにときにＡ／Ｄデータが＄0D未満に低下
したら、表示部３５の電圧低下表示（LOW
BATT）を点灯して電池交換を促がす。この条
件以外では該表示は消灯しておく。そして、一般
制御処理では前記のフラグがONであれば送信パ
ワーを5Wにし、また該フラグがOFFのときは送
信パワーを2Wにするような送信出力制御等を行
う。 In the process shown in FIG. 3, the threshold values V HE , V HL ,
VLE is shown as $15, $13, and $0D using the lower 5 bits of 8-bit data, respectively.
When detecting a high voltage battery, set the high voltage battery detection flag.
The flag is turned ON, and the flag is turned OFF when a low voltage battery is detected. If the A/D data drops below $15 when the flag is ON, or if the A/D data drops below $0D when the flag is OFF, the voltage drop display (LOW
BATT) lights up to remind you to replace the battery. The display remains off under conditions other than this. Then, in the general control processing, transmission output control is performed such that the transmission power is set to 5W when the flag is ON, and the transmission power is set to 2W when the flag is OFF.
尚、Ａ／Ｄコンバータ３９を用いる代りに
VHE，VHL，VLEをそれぞれ基準値とする３種類の
コンパレータを用いてもよい。 Incidentally, instead of using the A/D converter 39,
Three types of comparators may be used, each using V HE , V HL , and V LE as reference values.
以上述べたように本考案によれば、電池側に特
別な手段（金属片や突起等）を設けずに電池電圧
としきい値を判定することで自動的に公称電圧の
異なる電池を区別できるため共通部品を使用でき
る利点がある。またそれぞれの電圧低下を自動的
に検出できる利点がある。更に複雑な判断を必要
としないという効果もある。
As described above, according to the present invention, batteries with different nominal voltages can be automatically distinguished by determining the battery voltage and threshold without providing any special means (metal pieces, protrusions, etc.) on the battery side. It has the advantage of using common parts. Another advantage is that each voltage drop can be automatically detected. Another advantage is that no complicated judgment is required.
第１図は本考案の実施例を示す回路図、第２図
は電池の放電特性図、第３図は第１図のCPUの
処理を示すフローチヤート、第４図は携帯用無線
機と電池パツクの外観斜視図、第５図は従来の電
池電圧検出回路の構成図である。
図中、１０は高電圧用パツク、２０は低電圧用
パツク、３０は無線機、３１はCPU、３２は電
源スイツチ、３５は表示部、３７，３８は電源端
子、３９はＡ／Ｄコンバータである。
Figure 1 is a circuit diagram showing an embodiment of the present invention, Figure 2 is a battery discharge characteristic diagram, Figure 3 is a flowchart showing the processing of the CPU in Figure 1, and Figure 4 is a portable radio and battery. FIG. 5, which is an external perspective view of the pack, is a configuration diagram of a conventional battery voltage detection circuit. In the figure, 10 is a high voltage pack, 20 is a low voltage pack, 30 is a radio, 31 is a CPU, 32 is a power switch, 35 is a display, 37 and 38 are power terminals, and 39 is an A/D converter. be.
Claims (1)
続される電源端子の電圧を検出し、該電圧が第１
のしきい値VHLを越えているときは公称電圧VHの
高電圧用電池と判断して第２のしきい値VHE（VH
＞VHE＞VHL）を設定し、該電圧がVHE以下である
と電圧低下検出信号を出し、一方該電圧がVHL未
満のときは公称電圧VLの低電圧用電池と判断し
て第３のしきい値VLE（VLE＜VL）を設定し、該電
圧がVLE以下である時のみ電圧低下検出信号を出
すようにしてなることを特徴とする電池電圧検出
回路。 The voltage of the power supply terminal to which either of two types of batteries with different nominal voltages is connected is detected, and if the voltage is the first
When it exceeds the threshold value V HL , it is determined that the battery is a high voltage battery with the nominal voltage V H and the second threshold value V HE (V H
＞V HE ＞V HL ), and if the voltage is below V HE , a voltage drop detection signal is output, and if the voltage is below V HL , it is determined that the battery is a low voltage battery with a nominal voltage of V L. A battery voltage detection circuit characterized in that a third threshold V LE (V LE <V L ) is set, and a voltage drop detection signal is output only when the voltage is below V LE .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986161948U JPH0543420Y2 (en) | 1986-10-22 | 1986-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986161948U JPH0543420Y2 (en) | 1986-10-22 | 1986-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6367986U JPS6367986U (en) | 1988-05-07 |
| JPH0543420Y2 true JPH0543420Y2 (en) | 1993-11-01 |
Family
ID=31088743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986161948U Expired - Lifetime JPH0543420Y2 (en) | 1986-10-22 | 1986-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543420Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164652A (en) * | 1989-04-21 | 1992-11-17 | Motorola, Inc. | Method and apparatus for determining battery type and modifying operating characteristics |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE383454B (en) * | 1973-03-13 | 1976-03-08 | Skf Ind Trading & Dev | ELECTRIC MULTIPHASE MOTOR |
| JPS5055117U (en) * | 1973-09-18 | 1975-05-26 | ||
| JPS5590882A (en) * | 1978-12-29 | 1980-07-09 | Citizen Watch Co Ltd | Integrated circuit for electronic clock |
-
1986
- 1986-10-22 JP JP1986161948U patent/JPH0543420Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6367986U (en) | 1988-05-07 |
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