JP2010200583A - Battery capacity detector - Google Patents

Battery capacity detector Download PDF

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JP2010200583A
JP2010200583A JP2009045822A JP2009045822A JP2010200583A JP 2010200583 A JP2010200583 A JP 2010200583A JP 2009045822 A JP2009045822 A JP 2009045822A JP 2009045822 A JP2009045822 A JP 2009045822A JP 2010200583 A JP2010200583 A JP 2010200583A
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battery
temperature
detection
voltage level
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Munehito Nagayama
宗人 永山
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Aiphone Co Ltd
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Aiphone Co Ltd
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To enhance an accuracy of detecting battery capacity by providing a function of detecting consumption depth of a predetermined battery capacity without depending on the battery voltage levels that change according to the temperature of an ambient environment where a battery is provided. <P>SOLUTION: When detecting battery exhaustion where the voltage level of a battery 2 storing direct current power becomes lower than a predetermined voltage level, the battery capacity detector applies a detection load part 7 having temperature characteristics in which load is light when temperature is low or the load is heavy when temperature is high as a load connected to a battery 2, so that the output voltage value is fixed without depending on the battery voltage levels that change according to the temperature of the ambient environment where the battery 2 is provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電池容量検出装置に係り、特に、電池容量の検出動作の精度を高めた電池容量検出装置に関する。   The present invention relates to a battery capacity detection device, and more particularly, to a battery capacity detection device with improved accuracy of battery capacity detection operation.

従来から、この種の電池容量検出装置として、電池に大きな擬似負荷をかけ、その擬似負荷をかけてから一定時間経過後、電池の電池容量を知る手段を備えた電池の残存容量検知装置が開示されている（例えば、特許文献１を参照。）。   Conventionally, as this type of battery capacity detecting device, a battery remaining capacity detecting device having a means for knowing the battery capacity of a battery after applying a large pseudo load to the battery and elapse of a certain time after applying the pseudo load is disclosed. (For example, see Patent Document 1).

特開昭５５−８８５３４号公報JP-A-55-88534

しかしながら、背景技術に記載した特許文献１の電池の残存容量検知装置によれば、一定の負荷を接続したときの電池の電圧レベルを検出しているが、電圧検出回路の検出精度が要求されていないばかりでなく、電池自体の電圧レベルは、周囲環境の温度によって変化する温度特性を有しているため、低温時には電圧レベルが低下するために電池容量が十分であっても電池切れの誤表示が行われる一方、高温時には電池容量が少なくなっていても電池切れの表示を行わない虞があった。   However, according to the battery remaining capacity detection device described in Patent Document 1 described in the background art, the voltage level of the battery when a constant load is connected is detected, but the detection accuracy of the voltage detection circuit is required. Not only is the voltage level of the battery itself, it has a temperature characteristic that changes according to the temperature of the surrounding environment, so the voltage level drops at low temperatures, so even if the battery capacity is sufficient, an erroneous indication that the battery is dead On the other hand, when the battery capacity is low at high temperatures, there is a possibility that the battery exhaustion display is not performed.

本発明は、この難点を解消するためになされたもので、電池部が設置される周囲環境の温度に対応して変化する当該電池部の電圧レベルに依存することなく所定の電池容量の消耗深度を検出する機能を備えることにより、電池容量の検出動作の精度を高めた電池容量検出装置を提供することを目的としている。   The present invention has been made to eliminate this difficulty, and the consumption depth of a predetermined battery capacity is not dependent on the voltage level of the battery unit that changes in accordance with the temperature of the surrounding environment in which the battery unit is installed. An object of the present invention is to provide a battery capacity detection device that has a function of detecting the battery capacity, thereby improving the accuracy of the battery capacity detection operation.

前述の目的を達成するため、本発明の第１の態様である電池容量検出装置は、機能部の動作電源が蓄電された電池部と、機能部の動作に連動して電圧レベルが低下する電池部に蓄電された直流電源が所定の電圧レベル以下であることを検出するための検出部と、電池部からの電源供給により検出部に流れる電流値をもとに所定の電圧レベル以下であることを検出して表示部を点灯させるための制御部とを設けている。検出部は、電池部が設置される周囲環境の温度に対応して変化する当該電池部の電圧レベルに依存することなく所定の電池容量の消耗深度を検出する機能を備えている。   In order to achieve the above-described object, a battery capacity detection device according to a first aspect of the present invention includes a battery unit in which an operation power supply of a function unit is stored, and a battery whose voltage level decreases in conjunction with the operation of the function unit. A detection unit for detecting that the DC power stored in the unit is lower than a predetermined voltage level, and a predetermined voltage level or lower based on a current value flowing through the detection unit by power supply from the battery unit And a control unit for lighting the display unit. The detection unit has a function of detecting the consumption depth of a predetermined battery capacity without depending on the voltage level of the battery unit that changes corresponding to the temperature of the surrounding environment where the battery unit is installed.

また、本発明の第２の態様である電池容量検出装置は、本発明の第１の態様において、検出部は、電圧検出時において、温度が高いときには重負荷となり、温度が低いときには軽負荷となる温度特性を有する検出負荷手段を備えている。   The battery capacity detection device according to the second aspect of the present invention is the battery capacity detection device according to the first aspect of the present invention, in which the detection unit is a heavy load when the temperature is high and a light load when the temperature is low. Detection load means having the following temperature characteristics is provided.

本発明の電池容量検出装置によれば、直流電源が蓄電された電池部の電圧レベルが所定の電圧レベル以下となる電池容量切れ検出時において、電池部に接続される負荷として、温度が高いときには重負荷となる一方、温度が低いときには軽負荷となる温度特性を有する検出負荷手段を適用することにより、電池部が設置される周囲環境の温度に対応して変化する当該電池部の電圧レベルに依存することなく当該電池部の出力電圧値を一定にすることができるため、電池容量の検出動作の精度が高められる。   According to the battery capacity detection device of the present invention, when the battery capacity is detected to run out when the voltage level of the battery unit in which the DC power source is stored is below a predetermined voltage level, the load connected to the battery unit is high. By applying detection load means that has a temperature characteristic of light load when the temperature is low while applying a heavy load, the voltage level of the battery unit changes according to the temperature of the surrounding environment where the battery unit is installed. Since the output voltage value of the battery unit can be made constant without depending on it, the accuracy of the battery capacity detection operation can be improved.

図１は、本発明の実施例による電池容量検出装置の具体的な構成を示す回路ブロック図である。FIG. 1 is a circuit block diagram showing a specific configuration of a battery capacity detection device according to an embodiment of the present invention. 図２（Ａ）は、本発明の実施例による電池容量検出装置において、電池部が設置される周囲環境の温度の高低の相違に対応する電池容量の電圧レベルとその負荷電流の特性を示すグラフ図である。また、図２（Ｂ）は、同電池部の電池容量切れ検出時における負荷の温度特性を示すグラフ図である。さらに、図２（Ｃ）は、同電池部の温度特性を示すグラフ図である。FIG. 2A is a graph showing the voltage level of the battery capacity corresponding to the difference in temperature of the ambient environment where the battery unit is installed and the characteristics of the load current in the battery capacity detection device according to the embodiment of the present invention. FIG. FIG. 2B is a graph showing the temperature characteristics of the load when the battery capacity of the battery unit is detected to be out. Further, FIG. 2C is a graph showing the temperature characteristics of the battery part.

以下、本発明の電池容量検出装置を適用した最良の実施の形態例について、図面を参照して説明する。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments to which a battery capacity detection device of the invention is applied will be described with reference to the drawings.

図１は、本発明の実施例による電池容量検出装置の具体的な構成を示す回路ブロックである。この電池容量検出装置は、例えば、携行型の通信端末に内蔵されるものであって、例えば、呼出（操作・報知）、通話、インターネット接続、メール作成／閲覧／送受信機能等の各種の動作を行うための機能部１と、機能部１を始めとする当該装置の動作電源である直流電源が蓄電された電池部２と、電池部２から機能部１への電源供給の動作をオン／オフ切り換えるための電源供給切換部３と、電池部２に蓄電された直流電源の電圧レベル、すなわち、電池容量が所定の電圧レベル以下に低下したことを点灯表示するための表示部４と、表示部４に流れる電流を制限するための制限抵抗５と、電池部２に蓄電された直流電源の電圧レベル（電池容量）を検出・監視するための（検出部を構成する）電圧検出部６と、電池部２が設置される周囲環境の温度に対応して変化する当該電池部の電圧レベルに依存することなく所定の電池容量の消耗深度を検出する機能を備え、電圧検出時において、温度が高いときには重負荷となり、温度が低いときには軽負荷となる温度特性を有する（検出部を構成する）検出負荷部７と、検出負荷部７の動作をオン／オフ切り換えるための負荷動作切換部８と、前述の機能部１、電源供給切換部３、表示部４、電圧検出部６、検出負荷部７及び負荷動作切換部８をそれぞれ制御するための制御部９と、電池部２から（電源供給切換部３を経由して）機能部１、（制限抵抗５を経由して）表示部４及び制御部９にそれぞれ電源供給される直流電源の電圧レベルを安定化させるための例えば、３端子レギュレータにて構成される電源安定化部１０とを備えている。   FIG. 1 is a circuit block showing a specific configuration of a battery capacity detection device according to an embodiment of the present invention. This battery capacity detection device is incorporated in, for example, a portable communication terminal, and performs various operations such as calling (operation / notification), calling, Internet connection, mail creation / browsing / transmission / reception functions, etc. ON / OFF of the function unit 1 for performing, the battery unit 2 in which the DC power source that is the operation power source of the device including the function unit 1 is stored, and the power supply operation from the battery unit 2 to the function unit 1 A power supply switching unit 3 for switching, a voltage level of the DC power stored in the battery unit 2, that is, a display unit 4 for lighting and indicating that the battery capacity has dropped below a predetermined voltage level, and a display unit A limiting resistor 5 for limiting a current flowing through the battery 4, a voltage detection unit 6 for detecting and monitoring the voltage level (battery capacity) of the DC power stored in the battery unit 2 (constituting the detection unit), Around the battery unit 2 It has a function to detect the consumption depth of a predetermined battery capacity without depending on the voltage level of the battery unit that changes according to the temperature of the environment. When the voltage is detected, the load is heavy and the temperature is low. A detection load unit 7 having a temperature characteristic that sometimes becomes a light load (constituting a detection unit), a load operation switching unit 8 for switching on / off the operation of the detection load unit 7, the function unit 1 described above, and power supply Control unit 9 for controlling switching unit 3, display unit 4, voltage detection unit 6, detection load unit 7 and load operation switching unit 8 and function from battery unit 2 (via power supply switching unit 3) 1, a power supply stabilization unit configured by, for example, a three-terminal regulator for stabilizing the voltage level of a DC power source supplied to the display unit 4 and the control unit 9 (via the limiting resistor 5). With 10 There.

次に、前述の構成各部の具体的な接続の態様について説明するにあたり、制御部９には、その制御端子として、機能部１と、電源供給切換部３を構成するＰＮＰ型トランジスタのベースと、表示部４を構成する発光ダイオードのカソードと、電圧検出部６と、負荷動作切換部８を構成するＮＰＮ型トランジスタのベースとがそれぞれ接続されている。また、電池部２の〔＋〕端子には、電源安定化部１０を経由して電源供給切換部３を構成するＰＮＰ型トランジスタのエミッタと、電源安定化部１０、制限抵抗５を順次経由して表示部４を構成する発光ダイオードのアノードと、電圧検出部６と、検出負荷部７を経由して負荷動作切換部８を構成するＮＰＮ型トランジスタのコレクタと、電源安定化部１０を経由して制御部９とがそれぞれ接続されている。さらに、機能部１、電池部２の〔−〕端子、電圧検出部６、負荷動作切換部８を構成するＮＰＮ型トランジスタのエミッタ、制御部９及び電源安定化部１０にはそれぞれ、基準電位点（アース）が接続されている。   Next, in describing a specific connection mode of each component described above, the control unit 9 includes, as its control terminal, a function unit 1 and a base of a PNP transistor constituting the power supply switching unit 3; The cathode of the light emitting diode that constitutes the display unit 4, the voltage detection unit 6, and the base of the NPN transistor that constitutes the load operation switching unit 8 are respectively connected. In addition, the [+] terminal of the battery unit 2 sequentially passes through the emitter of the PNP transistor constituting the power supply switching unit 3 via the power stabilization unit 10, the power stabilization unit 10, and the limiting resistor 5. The anode of the light emitting diode constituting the display unit 4, the voltage detection unit 6, the collector of the NPN transistor constituting the load operation switching unit 8 via the detection load unit 7, and the power supply stabilization unit 10. The control unit 9 is connected to each other. Further, the function unit 1, the [−] terminal of the battery unit 2, the voltage detection unit 6, the emitter of the NPN transistor constituting the load operation switching unit 8, the control unit 9 and the power supply stabilization unit 10 each have a reference potential point. (Earth) is connected.

このように構成された本発明の実施例による電池容量検出装置において、以下、具体的な動作について説明する。   In the battery capacity detection apparatus according to the embodiment of the present invention configured as described above, a specific operation will be described below.

最初に、図１に示す電池部２に蓄電された直流電源は、機能部１の駆動の有無を問わずして、電源安定化部１０を経由してその電圧レベルが安定化された後、制御部９の動作用電源として電源供給されるとともに、電圧検出部６の検出・監視用電源として電源供給されている。   First, after the voltage level of the DC power stored in the battery unit 2 shown in FIG. 1 is stabilized via the power stabilization unit 10 regardless of whether the function unit 1 is driven, Power is supplied as an operation power source for the control unit 9 and is also supplied as a detection / monitoring power source for the voltage detection unit 6.

次に、機能部１を駆動させるにあたり、例えば、当該装置の使用者による適宜な操作（詳述せず。）を検出した制御部９は、電源供給切換部３をオン状態に制御して電池部２から電源安定化部１０を経由してその電圧レベルを安定化させた直流電源を機能部１に電源供給するとともに、負荷動作切換部８をオン状態に制御して電池部２からの電源供給により検出負荷部７を駆動させる。   Next, when driving the functional unit 1, for example, the control unit 9 that has detected an appropriate operation (not described in detail) by the user of the device controls the power supply switching unit 3 to be in an on state, thereby The power supply from the battery unit 2 is supplied from the unit 2 via the power supply stabilization unit 10 to the functional unit 1 while supplying the DC power whose voltage level is stabilized to the function unit 1 and controlling the load operation switching unit 8 to the on state. The detection load unit 7 is driven by the supply.

一方、機能部１が非駆動であるとき、これを検出した制御部９は、電源供給切換部３を定期的にオン状態に制御して電池部２から電源安定化部１０を経由してその電圧レベルを安定化させた直流電源を機能部１に電源供給するとともに、検出部動作切換部８を定期的にオン状態に制御して電池部２からの電源供給により検出負荷部７を駆動させる。   On the other hand, when the functional unit 1 is not driven, the control unit 9 that has detected the function unit periodically controls the power supply switching unit 3 to be in an ON state, and from the battery unit 2 via the power stabilization unit 10 A DC power supply with a stabilized voltage level is supplied to the function unit 1, and the detection unit operation switching unit 8 is periodically turned on to drive the detection load unit 7 by supplying power from the battery unit 2. .

また、前述のような機能部１の駆動時又は非駆動時において、電圧検出部６は、電池部２からの電源供給により流れる電流値をもとに当該電池部の電池容量を検出・監視し、その結果情報として、所定の電圧レベル以下であると検出した制御部９は、表示部４（の発光ダイオード）をＬｏｗレベルに制御することにより、電池部２から電源安定化部１０を経由してその電圧レベルが安定化され、制限抵抗５を経由した直流電源をもとに表示部４を点灯表示させることができる。   In addition, when the functional unit 1 is driven or not driven as described above, the voltage detection unit 6 detects and monitors the battery capacity of the battery unit based on the value of the current flowing through the power supply from the battery unit 2. As a result, the control unit 9 that has detected that the voltage level is equal to or lower than the predetermined voltage level controls the display unit 4 (light emitting diode) to the low level, thereby passing the power supply stabilization unit 10 from the battery unit 2. Thus, the voltage level is stabilized, and the display unit 4 can be lit on the basis of a DC power source via the limiting resistor 5.

次に、電池部２が設置される周囲環境の温度に依存せず、当該電池部の電池容量の消耗深度を検出する動作について説明する。   Next, an operation for detecting the consumption depth of the battery capacity of the battery unit without depending on the temperature of the surrounding environment where the battery unit 2 is installed will be described.

図２（Ａ）のグラフ図は、電池部２が設置される周囲環境の温度の高低の相違に対応する電池容量の電圧レベルとその負荷電流の特性を示す図であって、その周囲環境の温度の高低を問わずして同一の電圧レベルで検出するため、当該温度が高いときには重負荷となり電流を多く流す一方、当該温度が低いときには軽負荷となり電流を少なく流す必要があり、この特性は、図２（Ｂ）のグラフ図に示される。   The graph of FIG. 2 (A) is a diagram showing the voltage level of the battery capacity corresponding to the difference in temperature of the ambient environment where the battery unit 2 is installed and the characteristics of its load current. Since the detection is performed at the same voltage level regardless of the temperature level, a heavy load is applied when the temperature is high and a large amount of current flows.On the other hand, when the temperature is low, a light load is required and the current is decreased. This is shown in the graph of FIG.

したがって、電池部２が有する電圧特性として、当該電池部が設置される周囲環境の温度が低い場合には、その特性が低く、当該温度が高い場合には、その特性が高くなる図２（Ｃ）のグラフ図に示す温度依存性を有する当該電池部の電圧レベルを、図２（Ｂ）に示す温度依存性を有する負荷を用いることにより、温度依存のない状態で検出することが可能となる。   Therefore, as the voltage characteristics of the battery unit 2, when the temperature of the surrounding environment where the battery unit is installed is low, the characteristic is low, and when the temperature is high, the characteristic is high. It is possible to detect the voltage level of the battery part having the temperature dependence shown in the graph of FIG. 2 in a state having no temperature dependence by using the load having the temperature dependence shown in FIG. .

そこで、検出負荷部７は、前述のような電池部２の電圧レベルが所定の電圧レベル以下となる電池容量切れ検出時において、電池部２から電圧検出部６に流す電流を図２（Ａ）に示すように、当該電池部が設置される周囲環境の温度が高いときには重負荷となり電流を多く流す一方、温度が低いときには軽負荷となり電流を少なく流すように変化させる負荷機能が備えられているため、その周囲環境の温度に対応して変化する電池部２の電圧レベルに依存することなく当該電池部の出力電圧レベルを一定にすることができる。   Therefore, the detection load unit 7 detects the current flowing from the battery unit 2 to the voltage detection unit 6 when the battery capacity is detected to be lower than the predetermined voltage level as described above, as shown in FIG. As shown in the figure, a load function is provided to change so that a heavy load flows when the temperature of the surrounding environment where the battery unit is installed is high and a large amount of current flows while a light load flows when the temperature is low. Therefore, the output voltage level of the battery unit can be made constant without depending on the voltage level of the battery unit 2 that changes in accordance with the temperature of the surrounding environment.

これにより、電圧検出部６の検出電圧のレベルを適切に設定しておくことによって、直流電源が蓄電された電池部２の電圧レベルが所定の電圧レベル以下となる電池容量切れ検出時において、電池容量の消耗深度は常に一定とすることができ、当該電池容量の検出動作の精度が高められる。   Thereby, by setting the level of the detection voltage of the voltage detection unit 6 appropriately, the battery level is detected when the voltage level of the battery unit 2 in which the DC power source is stored is below a predetermined voltage level. The depth of consumption of the capacity can always be constant, and the accuracy of the battery capacity detection operation is improved.

本発明の電池容量検出装置においては、特定の実施の形態をもって説明してきたが、この形態に限定されるものでなく、本発明の効果を奏する限り、これまで知られた如何なる構成の当該装置であっても採用できるということはいうまでもないことである。   The battery capacity detection device of the present invention has been described with a specific embodiment. However, the present invention is not limited to this embodiment. As long as the effect of the present invention is achieved, the device having any configuration known so far can be used. It goes without saying that even if there is, it can be adopted.

１……機能部
２……電池部
４……表示部
６……電圧検出部（検出部）
７……検出負荷部（検出部、検出負荷手段）
９……制御部 1 …… Function part 2 …… Battery part 4 …… Display part 6 …… Voltage detection part (detection part)
7 …… Detection load section (detection section, detection load means)
9 …… Control unit

Claims (2)

機能部（１）の動作電源が蓄電された電池部（２）と、前記機能部の動作に連動して電圧レベルが低下する前記電池部に蓄電された直流電源が所定の電圧レベル以下であることを検出するための検出部（６、７）と、前記電池部からの電源供給により前記検出部に流れる電流値をもとに前記所定の電圧レベル以下であることを検出して表示部（４）を点灯させるための制御部（９）とを設け、
前記検出部は、前記電池部が設置される周囲環境の温度に対応して変化する当該電池部の電圧レベルに依存することなく所定の電池容量の消耗深度を検出する機能を備えることを特徴とする電池容量検出装置。 The battery unit (2) in which the operating power supply of the function unit (1) is stored and the DC power stored in the battery unit whose voltage level decreases in conjunction with the operation of the function unit is below a predetermined voltage level. A detection unit (6, 7) for detecting this, and a display unit (6) that detects that the voltage level is equal to or lower than the predetermined voltage level based on a current value flowing through the detection unit by power supply from the battery unit. 4) and a control unit (9) for lighting up,
The detection unit has a function of detecting a consumption depth of a predetermined battery capacity without depending on a voltage level of the battery unit that changes corresponding to a temperature of an ambient environment where the battery unit is installed. Battery capacity detection device. 前記検出部は、電圧検出時において、温度が高いときには重負荷となり、温度が低いときには軽負荷となる温度特性を有する検出負荷手段（７）を備えることを特徴とする請求項１記載の電池容量検出装置。   2. The battery capacity according to claim 1, wherein the detection unit includes a detection load means (7) having a temperature characteristic of a heavy load when the temperature is high and a light load when the temperature is low during voltage detection. Detection device.
JP2009045822A 2009-02-27 2009-02-27 Battery capacity detector Withdrawn JP2010200583A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110888067A (en) * 2019-12-13 2020-03-17 深圳市蓝禾技术有限公司 Humidifier battery electric quantity display method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110888067A (en) * 2019-12-13 2020-03-17 深圳市蓝禾技术有限公司 Humidifier battery electric quantity display method
CN110888067B (en) * 2019-12-13 2021-08-10 深圳市蓝禾技术有限公司 Humidifier battery electric quantity display method

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