JP4438109B2 - Temperature sensor mounting structure for battery pack - Google Patents
Temperature sensor mounting structure for battery pack Download PDFInfo
- Publication number
- JP4438109B2 JP4438109B2 JP18332698A JP18332698A JP4438109B2 JP 4438109 B2 JP4438109 B2 JP 4438109B2 JP 18332698 A JP18332698 A JP 18332698A JP 18332698 A JP18332698 A JP 18332698A JP 4438109 B2 JP4438109 B2 JP 4438109B2
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- JP
- Japan
- Prior art keywords
- temperature
- battery
- assembled battery
- temperature sensor
- mounting structure
- 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 - Fee Related
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Classifications
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、組電池の温度センサー取り付け構造および充電方法に関する。
【０００２】
【従来の技術】
電池の充電においては、適正な充電量を確保するために、充電するときの電池温度に応じた充電制御を行うことが必要である。例えば、鉛畜電池を充電する場合、充電条件が同じでも、電池温度の低い方が端子電圧は高くなる。
【０００３】
このため、温度に応じた補正をせずに、定電流充電や電圧切り替えによる多段定電流充電を行うと、充電量が不足することがある。そこで、電池に取り付けた温度検知センサーにより電池温度を測定し、その温度に応じて充電時間や切り替え電圧などの補正を行う充電方法が取られている。この場合、温度検知センサーは、組電池設置後、組電池中の全単電池もしくは所定の単電池に取り付けられる。
【０００４】
【発明が解決しようとする課題】
ところが、上述のごとく単電池へのセンサー取り付けは、組電池設置後であるがゆえに、作業が煩雑になることは避けられない。仮に、温度検知を行う所定の単電池を組電池中のただ1つに限定したとすると、温度センサー取り付け作業の簡略化にはつながるものの、該単電池の温度しか測定できず、組電池を構成する各電池の温度ばらつきを正確に把握することができない。
【０００５】
従って、充電時の温度変化に基づく充電制御が適正に行われず、充電量の不足をもたらす。
【０００６】
また、特に多数の単電池をシリーズに接続してなる組電池へのセンサー取り付けにあっては、組電池が高電圧を有していることもあり、非常に危険な環境下での作業とならしめる。
【０００７】
この発明は、従来の温度センサー取り付け構造や充電方法の持つ以上のような問題点を解消させ、センサー取り付け作業を安全で簡単に行うことができ、組電池の正確な充電制御を可能なものとすることを目的とする。
【０００８】
【課題を解決するための手段】
この目的を達成するために、この発明では、複数の単電池が電気的に接続されてなる組電池の温度を測定する温度センサーの取り付け構造であって、所定の単電池の底面温度を測定するための温度センサーが組電池の設置される設置部材に取り付けられ、前記単電池の底面を前記設置部材側となるように前記組電池が前記設置部材上に設置され、前記単電池の底面と前記温度センサーとが接することにより、上記所定組電池の温度測定が可能となるようにされていることを特徴とする組電池のための温度センサー取り付け構造をとることとしている。
【０００９】
また、この発明では、複数の単電池が電気的に接続されてなる組電池の温度を測定する温度センサーの取り付け構造であって、直列に接続された複数個の温度センサーが所定の異なる単電池に対応させて組電池の設置される設置部材に取り付けられ、該設置部材上に組電池が設置されることにより、上記所定組電池の温度測定が可能となるようにされていることを特徴とする組電池のための温度センサー取り付け構造をとることとしている。
【００１０】
【発明の実施の形態】
本発明の温度センサー取り付け構造においては、センサーが組電池設置部材に取り付けられることにより、該センサーの取り付けが容易で、しかも作業者が組電池本体と触することなくセンサー取り付けを行うことができ、高電圧の危険を伴わない作業環境を実現できる。
【００１１】
また、センサーの取り付けが、電池底部に位置することになるので、組電池が例えば冷却用ファンの気流による影響などを強く受ける場合であっても、正確な温度測定が可能となる。
【００１２】
なお、組電池設置部材への温度検知センサー取り付けは、温度測定を要する所定の単電池の底面中央で、底面に接する位置がよい。
【００１３】
電池設置部材は、電池設置に耐えうる強度を持った構造体であれば良く、例えば電池設置専用部材ではない床面などでもよい。
【００１４】
なお、電池の温度を測定するための温度センサーが電池の設置される設置部材に取り付けられ、該設置部材上に電池が設置されることにより、上記電池の温度測定が可能となるようにされていることを特徴とする構造は組電池の場合だけに限らず、広く電池のための温度センサー取り付け構造として用いることができる。
【００１５】
さらに、複数個の温度センサー取り付けの構造においては、組電池中の温度測定を要する単電池に対応させて温度センサーを取り付け、センサーと充電器とを接続する。好ましくは個々の温度センサーを直列に接続されたものである。
【００１６】
このような温度センサーが直列に接続された取り付け構造においては、センサーの取り付けが容易に実施でき、しかもセンサーと充電器との接続用コネクターの数を増やす必要がないため、複数個の温度センサー取り付けにかかる費用を抑えることが可能となる。従って、上述取り付け構造においては、温度測定を要する所定の単電池を組電池中の全単電池として、各々1個の温度センサーを対応させても、センサー取り付けはさほど煩雑な作業を必要とせず、全単電池の温度を測定することができ、より正確な組電池の充電制御を提供しうる。
【００１７】
また、温度測定用センサーはサーミスタ等の温度に比例する抵抗温度センサーが好ましく、この場合、直列に接続された温度センサーからの出力値をセンサー数で割って、センサー1個あたりの平均出力値を求め、これから温度を算出し、該温度に応じた充電制御を行う。
【００１８】
さらに、図面を参照して説明する。図1は縦5列横4列の合計20個の単電池からなる組電池（10）、電池設置部材（11）、20個の抵抗温度センサー（1）および抵抗温度センサーからの出力値に応じて動作する充電器（12）の接続構造を示す図である。組電池（10）が搭載される位置は、電気自動車などに設けられた電池設置部材（11）上である。前記電池設置部材（11）に、20個の抵抗温度センサー（1）が、20個の単電池に各々1個対応するよう、さらに単電池底面中央で底面に接するように取り付けられている。該温度センサー（1）は直列に接続され、その両端から引き出された信号線（2）が充電器（12）に接続されている。そして、電池設置部材（11）上に、組電池を設置することにより、温度センサーが各単電池の底部に接触し、温度を検知できるようになる。
【００１９】
これによって、抵抗温度センサーから出力された電圧値もしくは電流値より抵抗値を算出し、センサー数の20で割ってセンサー1個あたりの抵抗値を求める。該抵抗値から計算により温度を得る。得られた温度に応じて充電条件が適正に制御される。
【００２０】
【発明の効果】
以上説明したように、本発明は、以下に記載されるような効果を奏する。温度センサー取り付け構造によれば、センサー取り付け作業を、危険を伴わず容易に遂行することができ、また、電池の正確な温度測定が可能となる。そして、温度センサーが直列に接続されていることにより、安価にしかも簡易にセンサーの数を増やすことができ、高精度な電池の温度測定が可能となる。
【００２１】
また、充電方法によれば、上述温度センサーから得られた温度データに応じた充電制御により、電池の最適な充電を行うことができ、適正な充電量を確保することができる。
【図面の簡単な説明】
【図１】組電池、組電池設置部材、温度センサーおよび充電器の接続構造を示す図である。
【符号の説明】
１ 抵抗温度センサー
２ 信号線
10 組電池
11 電池設置部材
12 充電器[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an assembled battery temperature sensor mounting structure and a charging method.
[0002]
[Prior art]
In charging the battery, it is necessary to perform charge control according to the battery temperature when charging in order to ensure an appropriate charge amount. For example, when charging a lead-acid battery, the terminal voltage becomes higher when the battery temperature is lower even if the charging conditions are the same.
[0003]
For this reason, if the constant current charging or the multi-stage constant current charging by voltage switching is performed without performing the correction according to the temperature, the charge amount may be insufficient. Therefore, a charging method is employed in which the battery temperature is measured by a temperature detection sensor attached to the battery, and the charging time, switching voltage, and the like are corrected according to the temperature. In this case, the temperature detection sensor is attached to all single cells or predetermined single cells in the assembled battery after the assembled battery is installed.
[0004]
[Problems to be solved by the invention]
However, as described above, since the sensor is attached to the single cell after the assembled battery is installed, it is inevitable that the operation becomes complicated. Assuming that only one cell in the assembled battery is used for temperature detection, the temperature sensor can only be attached to the temperature sensor. It is impossible to accurately grasp the temperature variation of each battery.
[0005]
Therefore, the charging control based on the temperature change at the time of charging is not properly performed, resulting in a shortage of the charging amount.
[0006]
In particular, when attaching a sensor to an assembled battery formed by connecting a large number of single cells in series, the assembled battery may have a high voltage, so it must be performed in a very dangerous environment. Close.
[0007]
The present invention eliminates the above problems of the conventional temperature sensor mounting structure and charging method, allows the sensor mounting work to be performed safely and easily, and enables accurate charging control of the assembled battery. The purpose is to do.
[0008]
[Means for Solving the Problems]
In order to achieve this object, the present invention provides a temperature sensor mounting structure for measuring the temperature of an assembled battery in which a plurality of single cells are electrically connected, and measures the bottom surface temperature of a predetermined single cell. A temperature sensor for the battery is installed on an installation member on which the assembled battery is installed, and the assembled battery is installed on the installation member such that a bottom surface of the unit cell is on the installation member side; A temperature sensor mounting structure for an assembled battery is provided, wherein the temperature of the predetermined assembled battery can be measured by contacting the temperature sensor.
[0009]
Further, according to the present invention, there is provided a temperature sensor mounting structure for measuring the temperature of an assembled battery in which a plurality of unit cells are electrically connected, and the plurality of temperature sensors connected in series are different from each other. It is attached to the installation member in which the assembled battery is installed corresponding to the above, and the assembled battery is installed on the installation member so that the temperature of the predetermined assembled battery can be measured. The temperature sensor mounting structure for the assembled battery is taken.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the temperature sensor mounting structure of the present invention, by attaching the sensor to the assembled battery installation member, it is easy to mount the sensor, and the sensor can be mounted without touching the assembled battery main body, A work environment without the danger of high voltage can be realized.
[0011]
Further, since the sensor is mounted on the bottom of the battery, accurate temperature measurement can be performed even when the assembled battery is strongly influenced by, for example, the air current of the cooling fan.
[0012]
In addition, the temperature detection sensor is preferably attached to the assembled battery installation member at a position in contact with the bottom surface at the center of the bottom surface of a predetermined unit cell that requires temperature measurement.
[0013]
The battery installation member may be a structure having a strength that can withstand battery installation. For example, the battery installation member may be a floor surface that is not a battery installation dedicated member.
[0014]
A temperature sensor for measuring the temperature of the battery is attached to an installation member where the battery is installed, and the battery is installed on the installation member so that the temperature of the battery can be measured. The structure characterized in that it is not limited to the case of an assembled battery but can be widely used as a temperature sensor mounting structure for a battery.
[0015]
Further, in the structure with a plurality of temperature sensors attached, a temperature sensor is attached corresponding to a single cell that requires temperature measurement in the assembled battery, and the sensor and the charger are connected. Preferably, individual temperature sensors are connected in series.
[0016]
In such a mounting structure in which temperature sensors are connected in series, the sensors can be easily mounted, and it is not necessary to increase the number of connectors for connecting the sensors to the charger. It becomes possible to hold down the cost. Therefore, in the mounting structure described above, the predetermined unit cells that require temperature measurement are all unit cells in the assembled battery, and even if one temperature sensor is associated with each unit, the sensor mounting does not require much troublesome work, The temperature of all the cells can be measured, and more accurate charging control of the assembled battery can be provided.
[0017]
Also, the temperature sensor is preferably a resistance temperature sensor proportional to the temperature of a thermistor, etc.In this case, the output value from the temperature sensor connected in series is divided by the number of sensors, and the average output value per sensor is obtained. The temperature is calculated from this, and charging control is performed according to the temperature.
[0018]
Furthermore, it demonstrates with reference to drawings. Fig. 1 shows a battery pack (10) consisting of a total of 20 single cells in 5 rows and 4 rows, a battery installation member (11), 20 resistance temperature sensors (1), and the output values from the resistance temperature sensors. It is a figure which shows the connection structure of the charger (12) which operate | moves. The position where the assembled battery (10) is mounted is on the battery installation member (11) provided in the electric vehicle or the like. Twenty resistance temperature sensors (1) are attached to the battery installation member (11) so as to correspond to each of the 20 unit cells and to be in contact with the bottom surface at the center of the unit cell bottom surface. The temperature sensor (1) is connected in series, and a signal line (2) drawn from both ends thereof is connected to the charger (12). Then, by installing the assembled battery on the battery installation member (11), the temperature sensor comes into contact with the bottom of each unit cell, and the temperature can be detected.
[0019]
Thus, the resistance value is calculated from the voltage value or current value output from the resistance temperature sensor, and divided by 20 of the number of sensors to obtain the resistance value per sensor. The temperature is obtained by calculation from the resistance value. The charging conditions are appropriately controlled according to the obtained temperature.
[0020]
【The invention's effect】
As described above, the present invention has the following effects. According to the temperature sensor mounting structure, the sensor mounting operation can be easily performed without danger, and accurate temperature measurement of the battery can be performed. Since the temperature sensors are connected in series, the number of sensors can be easily increased at low cost, and the battery temperature can be measured with high accuracy.
[0021]
Further, according to the charging method, the battery can be optimally charged by charging control according to the temperature data obtained from the temperature sensor, and an appropriate charge amount can be ensured.
[Brief description of the drawings]
FIG. 1 is a diagram showing a connection structure of an assembled battery, an assembled battery installation member, a temperature sensor, and a charger.
[Explanation of symbols]
1
10 batteries
11 Battery installation material
12 Charger
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18332698A JP4438109B2 (en) | 1998-06-15 | 1998-06-15 | Temperature sensor mounting structure for battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18332698A JP4438109B2 (en) | 1998-06-15 | 1998-06-15 | Temperature sensor mounting structure for battery pack |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000003734A JP2000003734A (en) | 2000-01-07 |
| JP2000003734A5 JP2000003734A5 (en) | 2005-10-20 |
| JP4438109B2 true JP4438109B2 (en) | 2010-03-24 |
Family
ID=16133764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18332698A Expired - Fee Related JP4438109B2 (en) | 1998-06-15 | 1998-06-15 | Temperature sensor mounting structure for battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4438109B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002165380A (en) * | 2000-11-24 | 2002-06-07 | Tokyo R & D Co Ltd | Charging system of battery set |
| JP4272387B2 (en) | 2002-05-22 | 2009-06-03 | パナソニック株式会社 | Battery pack cooling device |
| JP3845370B2 (en) * | 2002-11-29 | 2006-11-15 | 本田技研工業株式会社 | Storage element module |
| JP2006164826A (en) * | 2004-12-09 | 2006-06-22 | Sanyo Electric Co Ltd | Battery pack |
| US20070054178A1 (en) * | 2005-08-30 | 2007-03-08 | Moon Jeong O | Cell having irreversible heat sensor |
| KR100899284B1 (en) * | 2006-03-13 | 2009-05-27 | 주식회사 엘지화학 | Battery Module Having Stability Means of Simple Structure |
-
1998
- 1998-06-15 JP JP18332698A patent/JP4438109B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000003734A (en) | 2000-01-07 |
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