JPH09180762A - Method for charging lithium ion battery and charging circuit thereof - Google Patents
Method for charging lithium ion battery and charging circuit thereofInfo
- Publication number
- JPH09180762A JPH09180762A JP7339511A JP33951195A JPH09180762A JP H09180762 A JPH09180762 A JP H09180762A JP 7339511 A JP7339511 A JP 7339511A JP 33951195 A JP33951195 A JP 33951195A JP H09180762 A JPH09180762 A JP H09180762A
- Authority
- JP
- Japan
- Prior art keywords
- charging
- ion battery
- current
- constant
- constant current
- 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.)
- Pending
Links
Classifications
-
- 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
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はリチウムイオン電池
の充電方法およびその充電回路に関し、特にリチウムイ
オン電池に適した充電制御方法を備えたリチウムイオン
電池の充電方法およびその回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of charging a lithium-ion battery and a charging circuit thereof, and more particularly to a method of charging a lithium-ion battery provided with a charging control method suitable for a lithium-ion battery and a circuit thereof.
【０００２】[0002]
【従来の技術】従来、この種のリチウムイオン電池用充
電回路は、リチウムイオン電池の充電において、定電流
定電圧による充電が用いられている。たとえば、特開平
５−１１１１８４号公報には、一定電圧値まで定電流で
充電し、その後充電電流が一定電流値以下になるまで定
電圧で充電を行う技術が記載されている。2. Description of the Related Art Conventionally, a charging circuit for a lithium-ion battery of this type has been used for charging a lithium-ion battery by charging with a constant current and a constant voltage. For example, Japanese Unexamined Patent Publication No. 5-111184 describes a technique of charging with a constant current to a constant voltage value and then charging with a constant voltage until the charging current becomes equal to or less than a constant current value.
【０００３】[0003]
【発明が解決しようとする課題】従来方式のリチウムイ
オン電池用充電回路は、定電圧レギュレータ（ドロッ
パ）で定電圧制御を行うので、レギュレータ部での電力
ロスによる発熱が生じると共に、充電回路の構成が複雑
となるという課題がある。In the conventional charging circuit for a lithium-ion battery, the constant voltage regulator (dropper) controls the constant voltage, so that heat is generated due to power loss in the regulator section and the structure of the charging circuit is increased. Is complicated.
【０００４】[0004]
【課題を解決するための手段】本発明によるリチウムイ
オン電池用充電回路では、定電流充電のみにより、上述
した問題点を解決することができる。In the lithium-ion battery charging circuit according to the present invention, the above-mentioned problems can be solved by only constant current charging.
【０００５】[0005]
【発明の実施の形態】次に、本発明について図面を参照
して説明する。図１は、本発明の実施の形態の一例を示
す回路図である。図１において、段階的に出力電流値を
変化させうる定電流電源３と、電池電圧を検出し定電流
電源３の充電電流レートを変化させる機能または信号を
発信する機能、及び定電流電源３の動作を停止させる機
能またはそのための信号を発信する機能を持った電池電
圧検出回路２と、充電されるリチウムイオン電池１とに
より構成される。この場合の信号の発信は、警報などに
使われるものである。Next, the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram showing an example of an embodiment of the present invention. In FIG. 1, a constant current power supply 3 capable of changing the output current value stepwise, a function of detecting a battery voltage and changing a charging current rate of the constant current power supply 3 or a function of transmitting a signal, and a constant current power supply 3 It is composed of a battery voltage detection circuit 2 having a function of stopping the operation or a function of transmitting a signal therefor, and a lithium ion battery 1 to be charged. The signal transmission in this case is used for an alarm or the like.
【０００６】次に、図１の回路の動作について説明す
る。定電流電源３は図２の期間（ａ）、期間（ｂ）の順
に充電を行う。このとき期間（ａ）では約０．８Ｃ（Ｃ
は電池の公称容量）の電流値Ｉ１で充電を行い、期間
（ｂ）では約０．２Ｃの電流値Ｉｅで充電を行う。また
期間（ａ）から期間（ｂ）への移行は図１の電池電圧検
出回路２が上限電圧値Ｖｅを検出した時点で電池電圧検
出回路２が定電流電源３の電源レートを変化させる。こ
の場合、次の方法も考えられる。すなわち、電池電圧Ｖ
ｅを検出した時点で電流レートを変化させる信号を発信
し、定電流電源３が受信する事により行われる。また定
電流電源３の動作が期間（ｂ）でありかつ電池電圧検出
回路２が電池電圧Ｖｅを検出すると電池電圧検出回路２
が、定電流電源３の機能を停止させるか、停止させる信
号を発信し、定電流電源３はその動作を停止し、充電電
流は流れなくなり充電が終了する。Next, the operation of the circuit of FIG. 1 will be described. The constant current power supply 3 charges in the order of the period (a) and the period (b) of FIG. At this time, about 0.8C (C
Is charged at a current value I1 of the battery's nominal capacity), and is charged at a current value Ie of about 0.2 C in the period (b). Further, the transition from the period (a) to the period (b) changes the power supply rate of the constant current power supply 3 by the battery voltage detection circuit 2 when the battery voltage detection circuit 2 of FIG. 1 detects the upper limit voltage value Ve. In this case, the following method can be considered. That is, the battery voltage V
This is performed by transmitting a signal for changing the current rate when e is detected and receiving it by the constant current power supply 3. Further, when the operation of the constant current power supply 3 is in the period (b) and the battery voltage detection circuit 2 detects the battery voltage Ve, the battery voltage detection circuit 2
However, the function of the constant current power source 3 is stopped, or a signal for stopping the function is transmitted, the constant current power source 3 stops its operation, the charging current stops flowing, and the charging ends.
【０００７】[0007]
【発明の効果】以上に説明したように、本発明によるリ
チウムイオン電池用充電回路は段階的に電流が変化する
定電流充電制御としているため、定電圧レギュレータが
不要となり、定電圧レギュレータの電力ロスがなくなり
発熱を抑えることができるという効果がある。さらに、
電流検出回路が不要であるため、回路構成が簡単になる
という効果もある。As described above, since the charging circuit for a lithium ion battery according to the present invention is controlled by constant current charging in which the current changes stepwise, a constant voltage regulator is not required and power loss of the constant voltage regulator is eliminated. The effect is that heat generation can be suppressed. further,
Since the current detection circuit is unnecessary, there is also an effect that the circuit configuration becomes simple.
【図１】本発明の一実施例の構成を示す接続図FIG. 1 is a connection diagram showing a configuration of an embodiment of the present invention.
【図２】本発明で説明した充電回路（方法）でリチウム
イオン電池を充電したときの電圧と、電流との経時変化
を示す図表FIG. 2 is a chart showing changes with time in voltage and current when a lithium ion battery is charged by the charging circuit (method) described in the present invention.
１ リチウムイオン電池 ２ 電池電圧検出回路 ３ 定電流電源 1 Lithium-ion battery 2 Battery voltage detection circuit 3 Constant current power supply
Claims (4)
池電圧の検出を行い、また各充電時間毎に一定の大きさ
の電流で充電を行うとともに、電池電圧が予め設定した
電圧値に達したときは各充電区間の充電電流の大きさを
変化せしめるトリガもしくは充電を終了させるトリガを
加えて前記充電電流の大きさの変化または充電停止を行
って成ることを特徴とするリチウムイオン電池用充電方
法。1. When a lithium-ion battery is charged, the battery voltage is detected, a constant amount of current is charged at each charging time, and the battery voltage reaches a preset voltage value. Is a charging method for a lithium ion battery, wherein the charging current is changed or the charging is stopped by adding a trigger for changing the magnitude of the charging current in each charging section or a trigger for ending the charging.
ら与えられた入力データに従って予め定められた処理を
行う定電流電源からなることを特徴とするリチウムイオ
ン電池の充電回路。2. A charging circuit for a lithium-ion battery, comprising a battery voltage detection circuit and a constant current power source that performs a predetermined process in accordance with input data provided from the detection circuit.
電回路において、リチウムイオン電池の充電を定電流充
電のみで行って成ることを特徴とする請求項１記載のリ
チウムイオン電池の充電方法。3. The method for charging a lithium ion battery according to claim 1, wherein in the charging circuit for the lithium ion battery according to claim 2, the lithium ion battery is charged only by constant current charging.
オン電池の充電方法において、その充電の最終段階の電
流値を定電流定電圧充電方式における充電終了検出の電
流値と同一とすることを特徴とする請求項３記載のリチ
ウムイオン電池の充電方法。4. A method for charging a lithium-ion battery that charges only with a constant current, wherein the current value at the final stage of the charging is the same as the current value for detecting the end of charging in the constant current constant voltage charging method. The method of charging a lithium ion battery according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7339511A JPH09180762A (en) | 1995-12-26 | 1995-12-26 | Method for charging lithium ion battery and charging circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7339511A JPH09180762A (en) | 1995-12-26 | 1995-12-26 | Method for charging lithium ion battery and charging circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09180762A true JPH09180762A (en) | 1997-07-11 |
Family
ID=18328178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7339511A Pending JPH09180762A (en) | 1995-12-26 | 1995-12-26 | Method for charging lithium ion battery and charging circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09180762A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100782271B1 (en) * | 2005-11-28 | 2007-12-04 | 엘지전자 주식회사 | Charging apparatus and method of mobile terminal |
| JP2015142502A (en) * | 2014-01-30 | 2015-08-03 | 古河電気工業株式会社 | Device and method for secondary battery charge control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07105983A (en) * | 1993-09-30 | 1995-04-21 | Sanyo Electric Co Ltd | Charging method for pack battery |
| JPH07296853A (en) * | 1994-04-22 | 1995-11-10 | Sony Corp | Method for charging |
-
1995
- 1995-12-26 JP JP7339511A patent/JPH09180762A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07105983A (en) * | 1993-09-30 | 1995-04-21 | Sanyo Electric Co Ltd | Charging method for pack battery |
| JPH07296853A (en) * | 1994-04-22 | 1995-11-10 | Sony Corp | Method for charging |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100782271B1 (en) * | 2005-11-28 | 2007-12-04 | 엘지전자 주식회사 | Charging apparatus and method of mobile terminal |
| JP2015142502A (en) * | 2014-01-30 | 2015-08-03 | 古河電気工業株式会社 | Device and method for secondary battery charge control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19980811 |