JP2003249272A - Battery pack equipped with temperature sensor - Google Patents
Battery pack equipped with temperature sensorInfo
- Publication number
- JP2003249272A JP2003249272A JP2002046340A JP2002046340A JP2003249272A JP 2003249272 A JP2003249272 A JP 2003249272A JP 2002046340 A JP2002046340 A JP 2002046340A JP 2002046340 A JP2002046340 A JP 2002046340A JP 2003249272 A JP2003249272 A JP 2003249272A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- temperature sensor
- holding cap
- holding
- tubular portion
- 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
- 230000002093 peripheral effect Effects 0.000 description 24
- 238000007789 sealing Methods 0.000 description 20
- 238000003466 welding Methods 0.000 description 14
- 238000007747 plating Methods 0.000 description 12
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 238000002788 crimping Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101001125854 Homo sapiens Peptidase inhibitor 16 Proteins 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 102100029324 Peptidase inhibitor 16 Human genes 0.000 description 1
- 101000983338 Solanum commersonii Osmotin-like protein OSML15 Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として自動車等
の車両を走行させるモーターを駆動するのに使用される
組電池に関し、とくに二次電池の温度を検出する温度セ
ンサーを備える組電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembled battery mainly used for driving a motor for driving a vehicle such as an automobile, and more particularly to an assembled battery equipped with a temperature sensor for detecting the temperature of a secondary battery.
【０００２】[0002]
【従来の技術】図１に示すように、複数の二次電池１０
を直列に電気接続して直線状に連結している組電池は、
ハイブリッドカー等の車両を駆動するモーターの電源と
して使用される。この用途に使用される組電池は、大電
流で充放電され、さらに極めて寒い冬期から暑い夏期ま
で極めて厳しい温度範囲で使用される。二次電池の温度
は、電池の電気的な性能に影響を与えるばかりでなく、
二次電池を劣化させる原因となる。とくに、二次電池が
極めて高い温度で充放電されると、電池の寿命が短くな
る。このため、車両用の組電池は、二次電池の温度を検
出して、二次電池の温度を設定温度の範囲とするように
充放電を制御している。二次電池の温度を検出するため
に、図１の組電池は、各々の二次電池１０の表面にＰＴ
Ｃ等の温度センサー５０を固定している。温度センサー
５０は、リード線５９を介して直列に接続されると共
に、二次電池１０の表面に隙間なく密着される。温度セ
ンサー５０は、接着されて電池表面に密着され、あるい
は温度センサーの表面を熱収縮チューブで被覆して電池
表面に密着される。2. Description of the Related Art As shown in FIG.
The battery pack that is connected in a straight line by electrically connecting
It is used as a power source for motors that drive vehicles such as hybrid cars. The assembled battery used for this purpose is charged and discharged with a large current and is used in an extremely severe temperature range from an extremely cold winter period to a hot summer period. The temperature of the secondary battery not only affects the electrical performance of the battery,
It causes deterioration of the secondary battery. In particular, when the secondary battery is charged and discharged at an extremely high temperature, the life of the battery becomes short. Therefore, the battery pack for a vehicle detects the temperature of the secondary battery and controls charging / discharging so that the temperature of the secondary battery falls within a set temperature range. In order to detect the temperature of the secondary battery, the assembled battery of FIG. 1 has a PT on the surface of each secondary battery 10.
The temperature sensor 50 such as C is fixed. The temperature sensor 50 is connected in series via a lead wire 59 and is closely attached to the surface of the secondary battery 10 without any gap. The temperature sensor 50 is adhered and brought into close contact with the battery surface, or the surface of the temperature sensor is covered with a heat-shrinkable tube and brought into close contact with the battery surface.
【０００３】図１の組電池は、たとえば６個の電池１０
の温度を検出するために６個の温度センサー５０を必要
とする。組電池は、数十個を直列に接続して車両用の電
源装置として使用される。たとえば、３０個の組電池を
直列に接続して車両用の電源装置として使用される。こ
の電源装置は、１８０個の二次電池を直列に接続するの
で、温度センサーも１８０個使用する必要がある。この
ように多数の温度センサーを使用するために、車両用の
組電池は製造コストが相当に高くなる。この欠点を解消
するために、たとえば、電池の間に温度センサーを配設
しているパック電池が開発されている（特開平４−２９
２８６９号）。このパック電池は、円筒型電池を平行に
並べて、谷間に温度センサーを配設している。The assembled battery of FIG. 1 is composed of, for example, six batteries 10.
Six temperature sensors 50 are required to detect the temperature of the. Dozens of battery packs are connected in series and used as a power supply device for a vehicle. For example, 30 assembled batteries are connected in series and used as a power supply device for a vehicle. Since this power supply device has 180 secondary batteries connected in series, it is necessary to use 180 temperature sensors. Due to such a large number of temperature sensors, the manufacturing cost of the assembled battery for a vehicle is considerably high. In order to solve this drawback, for example, a battery pack in which a temperature sensor is arranged between the batteries has been developed (Japanese Patent Laid-Open No. 4-29).
2869). In this battery pack, cylindrical batteries are arranged in parallel and a temperature sensor is arranged in a valley.
【０００４】[0004]
【発明が解決しようとする課題】この構造のパック電池
は、ひとつの温度センサーでふたつの電池の温度を検出
できる。このため、電池の個数よりも少ない数の温度セ
ンサーで電池温度を検出できる。しかしながら、円筒型
電池を平行に並べているパック電池は、電池の間の谷間
に温度センサーを配設できるが、電池を直線状に連結し
ている組電池は、この構造で温度センサーを固定できな
い。In the battery pack having this structure, the temperature of two batteries can be detected by one temperature sensor. Therefore, the battery temperature can be detected by the number of temperature sensors smaller than the number of batteries. However, the battery pack in which the cylindrical batteries are arranged in parallel can have the temperature sensor arranged in the valley between the batteries, but the battery pack in which the batteries are linearly connected cannot fix the temperature sensor with this structure.
【０００５】さらに、円筒型電池の谷間に温度センサー
を配設する構造にしても、また図１に示す構造の組電池
にしても、温度センサーを正確に位置決めして、電池の
特定位置に正確に配設するのが難しい。温度センサーと
電池との相対的な位置ずれは、温度センサーの検出誤差
の原因となる。温度センサーの検出誤差が大きくなる
と、設定温度で正確に電池の充放電を停止できなくなっ
て、電池を劣化させる原因となる。とくに、全ての電池
に温度センサーを配置することなく、電池よりも少ない
数の温度センサーで全ての電池温度を検出する組電池に
おいては、全ての電池温度を正確に検出することが特に
大切である。Further, whether the temperature sensor is arranged in the valley of the cylindrical battery or the assembled battery having the structure shown in FIG. 1, the temperature sensor is accurately positioned so that the temperature sensor is accurately positioned at a specific position of the battery. Difficult to place in. The relative displacement between the temperature sensor and the battery causes a detection error of the temperature sensor. If the detection error of the temperature sensor becomes large, the charging / discharging of the battery cannot be stopped accurately at the set temperature, which causes deterioration of the battery. Especially, it is especially important to accurately detect all battery temperatures in an assembled battery that detects all battery temperatures with a smaller number of temperature sensors than batteries without disposing temperature sensors in all batteries. .
【０００６】本発明は、このことを実現することを目的
に開発されたもので、少ない数の温度センサーで二次電
池の温度を正確に検出できる組電池を提供することを目
的としている。また、本発明の他の大切な目的は、二次
電池を直線状に連結している保持キャップを温度センサ
ーを定位置に装着するパーツに併用することで、温度セ
ンサーを定位置に装着するための専用部品を使用するこ
となく、温度センサーを正確な位置に配設できる温度セ
ンサーを備える組電池を提供することにある。The present invention was developed for the purpose of achieving this, and an object of the present invention is to provide an assembled battery capable of accurately detecting the temperature of the secondary battery with a small number of temperature sensors. Another important object of the present invention is to attach the temperature sensor in place by using the holding cap that linearly connects the rechargeable batteries together with the part that attaches the temperature sensor in place. Another object of the present invention is to provide an assembled battery provided with a temperature sensor capable of disposing the temperature sensor at an accurate position without using the exclusive parts.
【０００７】[0007]
【課題を解決するための手段】本発明の温度センサーを
備える組電池は、複数の二次電池１０を直列に接続して
直線状に連結している。組電池は、連結される二次電池
１０の間に、一方または両方の二次電池１０の端部を挿
入する筒部を有する保持キャップ３０を配設している。
保持キャップ３０は、温度センサー５０を配設する装着
部３９を備え、この装着部３９に温度センサー５０を配
設して、ひとつの温度センサー５０でふたつの二次電池
１０の温度を検出している。An assembled battery provided with a temperature sensor of the present invention comprises a plurality of secondary batteries 10 connected in series and linearly connected. The assembled battery includes a holding cap 30 having a tubular portion into which one or both of the secondary batteries 10 are inserted between the secondary batteries 10 to be connected.
The holding cap 30 includes a mounting portion 39 on which the temperature sensor 50 is disposed, and the temperature sensor 50 is disposed on the mounting portion 39 so that one temperature sensor 50 detects the temperatures of the two secondary batteries 10. There is.
【０００８】保持キャップ３０の装着部３９は、筒部の
両面に貫通している切除部、貫通孔、凹部のいずれかと
することができる。保持キャップ３０は、互いに連結さ
れる一方の二次電池１０の端部を挿入して連結する第１
筒部３７と、他方の二次電池１０の端部を挿入して連結
する第２筒部３８からなる筒部を有する構造として、第
１筒部３７と第２筒部３８とを互いに直線状に配設する
ことができる。The mounting portion 39 of the holding cap 30 may be a cutout portion, a through hole, or a recess that penetrates both sides of the tubular portion. The holding cap 30 is a first cap for inserting and connecting the ends of one of the secondary batteries 10 connected to each other.
As a structure having a tubular portion including a tubular portion 37 and a second tubular portion 38 into which the end portion of the other secondary battery 10 is inserted and connected, the first tubular portion 37 and the second tubular portion 38 are linear with each other. Can be installed at
【０００９】さらに、組電池は、二次電池１０の間に、
二次電池１０を電気接続する接続体２０を配設すると共
に、保持キャップ３０に、この接続体２０を定位置に保
持する保持部３２を設けることができる。さらに、保持
キャップ３０は、接続体２０と電池端面との間を絶縁す
る絶縁リング４１を一体的に成形して設けることができ
る。Further, the assembled battery includes a secondary battery 10 and
The connecting body 20 for electrically connecting the secondary battery 10 can be provided, and the holding cap 30 can be provided with a holding portion 32 for holding the connecting body 20 in a fixed position. Furthermore, the holding cap 30 can be provided by integrally molding an insulating ring 41 that insulates between the connection body 20 and the battery end surface.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。ただし、以下に示す実施例は、本発明
の技術思想を具体化するための組電池を例示するもので
あって、本発明は組電池を以下のものに特定しない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. However, the examples described below exemplify the assembled battery for embodying the technical idea of the present invention, and the present invention does not specify the assembled battery to the following.
【００１１】さらに、この明細書は、特許請求の範囲を
理解しやすいように、実施例に示される部材に対応する
番号を、「特許請求の範囲の欄」、および「課題を解決
するための手段の欄」に示される部材に付記している。
ただ、特許請求の範囲に示される部材を、実施例の部材
に特定するものでは決してない。Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "the claims column" and "to solve the problems. It is added to the members shown in "Means column".
However, the members shown in the claims are not limited to the members of the embodiment.
【００１２】図２に示す組電池は、複数の二次電池１０
を直列に接続して直線状に連結して、表面に温度センサ
ー５０を固定している。この構造の組電池は、複数個を
直列に接続して、主としてハイブリッドカー等の電動車
両の電源に使用される。本発明の組電池は、電動車両以
外の用途であって、大出力が要求される用途にも使用で
きる。図の組電池は、円筒型電池である二次電池を直線
状に連結して直列に接続している。ただし、組電池は、
角型電池である二次電池を直線状に連結して直列に接続
することもできる。ひとつの組電池は、たとえば、４〜
１０個の二次電池を直列に接続しているが、これよりも
多く、あるいは少ない個数の二次電池を直列に接続する
こともできる。温度センサー５０は、ふたつの二次電池
１０の間に配設されて、ひとつでふたつの二次電池１０
の温度を検出する。したがって、組電池は、二次電池１
０の数の半分の数の温度センサー５０を備える。The assembled battery shown in FIG. 2 comprises a plurality of secondary batteries 10.
Are connected in series and linearly connected, and the temperature sensor 50 is fixed to the surface. A plurality of battery packs having this structure are connected in series and are mainly used as a power source for electric vehicles such as hybrid cars. INDUSTRIAL APPLICABILITY The battery pack of the present invention can be used for applications other than electric vehicles and for applications requiring high output. In the assembled battery shown in the figure, cylindrical secondary batteries are linearly connected and connected in series. However, the battery pack
Secondary batteries, which are prismatic batteries, may be linearly connected and connected in series. One assembled battery is, for example, 4 to
Although 10 secondary batteries are connected in series, a larger or smaller number of secondary batteries can be connected in series. The temperature sensor 50 is disposed between the two secondary batteries 10, and one temperature sensor 50 serves as the two secondary batteries 10.
Detects the temperature of. Therefore, the assembled battery is the secondary battery 1
The number of the temperature sensors 50 is half that of zero.
【００１３】二次電池１０は、ニッケル−水素電池、リ
チウムイオン二次電池、ニッケル−カドミウム電池等の
充電できる全ての電池を使用することができる。ただ、
電動車両用の組電池に使用される二次電池には、ニッケ
ル−水素電池が適している。体積と重量に対する出力が
大きくて、優れた大電流特性を有するからである。As the secondary battery 10, all rechargeable batteries such as a nickel-hydrogen battery, a lithium-ion secondary battery and a nickel-cadmium battery can be used. However,
A nickel-hydrogen battery is suitable as a secondary battery used for an assembled battery for an electric vehicle. This is because it has a large output with respect to volume and weight and has excellent large current characteristics.
【００１４】二次電池１０は、図３と図４の断面図に示
すように、外装缶１１の開口部を封口板１２で気密に密
閉している。外装缶１１と封口板１２は金属板である。
外装缶１１は、金属板を底のある筒状にプレス成形して
製作される。封口板１２は、中央に凸部電極１３を溶接
している。外装缶１１の内部には、電極（図示せず）が
内蔵される。さらに、電解液も充填される。外装缶１１
は、開口部の端部をかしめ加工して封口板１２を気密に
固定している。封口板１２は、ガスケット１４を介して
外装缶１１のかしめ部に挟着されて気密に固定される。
ガスケット１４は絶縁材のゴム状弾性体で、封口板１２
と外装缶１１とを絶縁すると共に、封口板１２と外装缶
１１との隙間を気密に閉塞する。この構造の二次電池１
０は、封口板１２をかしめて挟着するために、封口板１
２を設けている端部に、周囲に沿って溝部１５が設けら
れる。さらに、封口板１２の周縁にはカシメ凸条１６が
設けられる。この二次電池１０は、封口板１２を第１の
電極として、外装缶１１を第２の電極としている。ニッ
ケル−水素電池は、第１の電極を正極として第２の電極
を負極としている。二次電池は、第１の電極を負極とし
て第２の電極を正極とすることもできる。In the secondary battery 10, as shown in the sectional views of FIGS. 3 and 4, the opening of the outer can 11 is hermetically sealed with a sealing plate 12. The outer can 11 and the sealing plate 12 are metal plates.
The outer can 11 is manufactured by pressing a metal plate into a cylindrical shape having a bottom. The sealing plate 12 has a convex electrode 13 welded to the center thereof. An electrode (not shown) is incorporated inside the outer can 11. Further, the electrolyte solution is also filled. Exterior can 11
The end plate of the opening is caulked to fix the sealing plate 12 in an airtight manner. The sealing plate 12 is airtightly fixed by being sandwiched by the caulking portion of the outer can 11 via a gasket 14.
The gasket 14 is made of an insulating rubber-like elastic material, and is used as the sealing plate 12.
The outer can 11 is insulated from the outer can 11 and the gap between the sealing plate 12 and the outer can 11 is airtightly closed. Secondary battery 1 with this structure
0 is a sealing plate 1 for crimping and sealing the sealing plate 12.
The groove portion 15 is provided along the periphery at the end portion where the groove 2 is provided. Further, a caulking ridge 16 is provided on the periphery of the sealing plate 12. The secondary battery 10 uses the sealing plate 12 as a first electrode and the outer can 11 as a second electrode. A nickel-hydrogen battery has a first electrode as a positive electrode and a second electrode as a negative electrode. In the secondary battery, the first electrode may be the negative electrode and the second electrode may be the positive electrode.
【００１５】図２〜図４の組電池は、複数の二次電池１
０を直線状に連結して、電気的には直列に接続してい
る。これらの組電池は、隣接する二次電池１０の端面の
間に、二次電池１０を電気接続する接続体２０と、保持
キャップ３０を配設しており、保持キャップ３０には電
池温度を検出する温度センサー５０を装着している。保
持キャップ３０は、隣接する二次電池１０を直線状に連
結すると共に、二次電池１０の間の定位置に接続体２０
を配設する。The assembled battery shown in FIGS. 2 to 4 comprises a plurality of secondary batteries 1.
0s are linearly connected and electrically connected in series. In these assembled batteries, a connecting body 20 for electrically connecting the secondary batteries 10 and a holding cap 30 are arranged between the end faces of the adjacent secondary batteries 10, and the holding cap 30 detects the battery temperature. The temperature sensor 50 is installed. The holding cap 30 linearly connects the adjacent secondary batteries 10, and at the same time, the connecting body 20 is placed at a fixed position between the secondary batteries 10.
To arrange.
【００１６】保持キャップ３０は、全体をプラスチック
等の絶縁材で成形している。保持キャップ３０は、隣接
する二次電池１０の間に配設されて、隣接する二次電池
１０を連結する。隣接する二次電池１０を連結するため
に、保持キャップ３０は、互いに連結される一方の二次
電池１０の端部を挿入して連結する第１筒部３７と、他
方の二次電池１０の端部を挿入して連結する第２筒部３
８とを有し、第１筒部３７と第２筒部３８とを互いに直
線状に配設している。隣接するふたつの二次電池１０
は、各々の端部を第１筒部３７と第２筒部３８に挿入し
て、保持キャップ３０でもって直線状に連結される。The holding cap 30 is entirely made of an insulating material such as plastic. The holding cap 30 is disposed between the adjacent secondary batteries 10 and connects the adjacent secondary batteries 10. In order to connect the secondary batteries 10 adjacent to each other, the holding cap 30 includes a first cylindrical portion 37 into which the end portions of the one secondary battery 10 that is connected to each other are inserted and connected, and a holding cap 30 of the other secondary battery 10. The second tubular portion 3 into which the end portion is inserted and connected
8, and the first tubular portion 37 and the second tubular portion 38 are linearly arranged with respect to each other. Two adjacent secondary batteries 10
The respective end portions are inserted into the first tubular portion 37 and the second tubular portion 38, and are linearly connected by the holding cap 30.
【００１７】第１筒部３７及び第２筒部３８は、二次電
池１０の外装缶１１の端部を隙間なく挿入できる筒状に
成形される。円筒型電池の二次電池１０を挿入する第１
筒部３７及び第２筒部３８は、円筒形で、その内径を円
筒型電池の外径にほぼ等しく、正確には内径を円筒型電
池の外径よりもわずかに小さくする。わずかに小さい円
筒状の第１筒部３７及び第２筒部３８は、二次電池１０
を挿入するとわずかに伸びて、二次電池１０の外装缶１
１にぴったりと隙間なく密着する。また、二次電池１０
の外装缶１１は、製造工程によって外径にわずかなバラ
ツキがある。規定の寸法よりもわずかに小さく成形して
いる第１筒部３７及び第２筒部３８は、外径にバラツキ
のある外装缶、とくに細い外装缶の二次電池を隙間なく
挿入できる。第１筒部３７及び第２筒部３８が弾性的に
伸びて、外装缶の太さのバラツキを吸収するからであ
る。The first tubular portion 37 and the second tubular portion 38 are formed into a tubular shape into which the end of the outer can 11 of the secondary battery 10 can be inserted without a gap. First to insert the secondary battery 10 of the cylindrical battery
The tubular portion 37 and the second tubular portion 38 are cylindrical and have an inner diameter approximately equal to the outer diameter of the cylindrical battery, and more precisely, an inner diameter slightly smaller than the outer diameter of the cylindrical battery. The slightly smaller cylindrical first cylinder portion 37 and second cylinder portion 38 are used for the secondary battery 10
When inserted, it expands slightly and the outer can 1 of the secondary battery 10
It fits closely to 1 without a gap. In addition, the secondary battery 10
The outer can 11 has a slight variation in outer diameter depending on the manufacturing process. The first cylinder portion 37 and the second cylinder portion 38, which are formed to be slightly smaller than the specified size, can be inserted into an outer can having an outer diameter variation, particularly a secondary battery having a thin outer can without any gap. This is because the first tubular portion 37 and the second tubular portion 38 elastically extend to absorb the variation in the thickness of the outer can.
【００１８】第１筒部３７は、周囲に溝部１５のある二
次電池１０の端部を挿入している。この第１筒部３７
は、内面に突出して係止凸部３４を設けている。係止凸
部３４は、二次電池１０の端部にある溝部１５に嵌入さ
れて、保持キャップ３０が二次電池１０から抜け難くす
る。図５の保持キャップ３０は、第１筒部３７の内面に
沿う凸条を設けて係止凸部３４としている。係止凸部
は、必ずしも凸条の形状とする必要はない。係止凸部
は、部分的に突出する凸部を、二次電池の溝部と対向す
る位置に設ける形状とすることもできる。The first tubular portion 37 has the end portion of the secondary battery 10 having the groove portion 15 in its periphery inserted therein. This first tubular portion 37
Has a locking projection 34 protruding toward the inner surface. The locking protrusion 34 is fitted into the groove 15 at the end of the secondary battery 10 so that the holding cap 30 does not easily come off from the secondary battery 10. In the holding cap 30 of FIG. 5, a protrusion is provided along the inner surface of the first tubular portion 37 to serve as a locking protrusion 34. The locking protrusion does not necessarily have to be in the shape of a ridge. The locking protrusion may have a shape in which a partially protruding protrusion is provided at a position facing the groove of the secondary battery.
【００１９】係止凸部３４の内面突出高さは、高すぎる
と第１筒部３７に二次電池１０の端部をスムーズに挿入
できなくなる。反対に低すぎると、挿入した二次電池１
０が抜けやすくなる。したがって、係止凸部３４の高さ
は、スムーズに挿入できて、抜け難いように設計され
る。保持キャップは、第１筒部と第２筒部に縦方向にス
リットを設けることができる。スリットのある第１筒部
と第２筒部は、二次電池の端部にスムーズに挿入でき
る。とくに、スリットのある第１筒部は、高い係止凸部
を設けてスムーズに二次電池の端部を挿入できる。スリ
ットで複数に切り離された第１筒部が弾性変形しやすく
なるからである。ただ、係止凸部の高さを最適にして、
スリットのない第１筒部に二次電池をスムーズに挿入し
ながら、抜け難いようにすることもできる。If the protruding height of the inner surface of the locking projection 34 is too high, the end portion of the secondary battery 10 cannot be smoothly inserted into the first tubular portion 37. Conversely, if it is too low, the inserted secondary battery 1
It becomes easy to lose 0. Therefore, the height of the locking convex portion 34 is designed so that the locking convex portion 34 can be smoothly inserted and is difficult to pull out. The holding cap may be provided with slits in the vertical direction on the first tubular portion and the second tubular portion. The first cylinder portion and the second cylinder portion having the slit can be smoothly inserted into the end portion of the secondary battery. In particular, the first tubular portion having the slit is provided with a high locking protrusion so that the end portion of the secondary battery can be smoothly inserted. This is because the first tubular portion separated into a plurality of slits is easily elastically deformed. However, by optimizing the height of the locking protrusion,
It is also possible to make it difficult to remove the secondary battery while smoothly inserting the secondary battery into the first cylindrical portion having no slit.
【００２０】第１筒部３７及び第２筒部３８からなる筒
部を有する保持キャップ３０は、隣接する二次電池１０
を正確に直線状に連結できる。ただ、保持キャップ３０
は、図６と図７に示すように、片方の二次電池１０を挿
入する筒部３１を設ける構造とすることもできる。この
保持キャップ３０は、接続体２０を定位置に保持する。
保持キャップ３０で定位置に保持される接続体２０が、
隣接して対向する電池端面に溶接されて、二次電池１０
を直線状に連結する。なお、図６に示す組電池におい
て、図３に示す組電池と同じ構成要素については、同じ
符号を付している。The holding cap 30 having a tubular portion composed of the first tubular portion 37 and the second tubular portion 38 is provided in the adjacent secondary battery 10.
Can be accurately connected in a straight line. Just holding cap 30
Alternatively, as shown in FIGS. 6 and 7, it is also possible to provide a structure in which a cylindrical portion 31 into which one of the secondary batteries 10 is inserted is provided. This holding cap 30 holds the connector 20 in place.
The connecting body 20 held in place by the holding cap 30
The secondary battery 10 is welded to the end faces of the batteries that are adjacent to and face each other.
Are connected in a straight line. In the assembled battery shown in FIG. 6, the same components as those of the assembled battery shown in FIG. 3 are designated by the same reference numerals.
【００２１】保持キャップ３０は、接続体２０を抜け難
いように定位置に保持するための保持部３２を有する。
保持部３２は、第１筒部３７と第２筒部３８との間に配
設されると共に、保持する接続体２０の両面を対向する
電池端に溶接するために貫通孔３３を設けている。プラ
スチック製の保持キャップ３０は、第１筒部３７及び第
２筒部３８と保持部３２からなる全体を一体的に成形で
きるので、保持部３２と第１筒部３７及び第２筒部３８
を別々に製作して連結する必要がない。貫通孔３３は、
保持部３２に開口される。The holding cap 30 has a holding portion 32 for holding the connecting body 20 in a fixed position so that the connecting body 20 does not easily come off.
The holding portion 32 is disposed between the first tubular portion 37 and the second tubular portion 38, and has a through hole 33 for welding both surfaces of the holding connector 20 to the opposing battery ends. . Since the holding cap 30 made of plastic can integrally mold the whole of the first tubular portion 37, the second tubular portion 38, and the holding portion 32, the holding portion 32, the first tubular portion 37, and the second tubular portion 38.
There is no need to separately manufacture and connect. The through hole 33 is
The holder 32 is opened.
【００２２】図３と図６の保持キャップ３０は、二次電
池１０のカシメ凸条１６の表面と内面を保持部３２で被
覆している。カシメ凸条１６の内面を絶縁するために、
カシメ凸条１６の内側に嵌入される凸部リング３５を一
体成形して設けている。凸部リング３５は、保持キャッ
プ３０を二次電池１０の定位置に嵌着する働きもする。
この保持部３２は、カシメ凸条１６を絶縁して、カシメ
凸条１６が接続体２０と外装缶１１の底面に接触してシ
ョートするのを阻止する。すなわち、ふたつの二次電池
１０のショートを防止しながら接続体２０を定位置に保
持する。さらに、図３と図６の保持キャップ３０は、保
持部３２に設けている貫通孔３３の開口部上端に、内側
に突出する抜止ストッパ３６を設けている。図の抜止ス
トッパ３６は凸条であるが、部分的に突出する形状とす
ることもできる。抜止ストッパ３６は、接続体２０を抜
け難いように保持する。この保持キャップ３０は、貫通
孔３３の内形を接続体２０の外形にほぼ等しくして、抜
止ストッパ３６の内形を接続体２０の外形よりも小さく
している。この構造の保持キャップ３０は、保持部３２
に設けている貫通孔３３の内周面に接続体２０の外周縁
を当接させて、接続体２０を位置ずれしないようにしな
がら、抜止ストッパ３６で抜け難いように保持する。抜
止ストッパ３６が接続体２０の外周縁を係止する状態
で、接続体２０は下面に突出している溶接凸部２２を封
口板１２に接触させる。In the holding cap 30 shown in FIGS. 3 and 6, the surface and inner surface of the crimped ridge 16 of the secondary battery 10 are covered with a holding portion 32. To insulate the inner surface of the crimped ridges 16,
The convex ring 35 fitted inside the crimped convex strip 16 is integrally formed and provided. The convex ring 35 also has a function of fitting the holding cap 30 into a fixed position of the secondary battery 10.
The holding portion 32 insulates the caulking ridge 16 and prevents the caulking ridge 16 from coming into contact with the connector 20 and the bottom surface of the outer can 11 to cause a short circuit. That is, the connection body 20 is held in a fixed position while preventing a short circuit between the two secondary batteries 10. Further, the holding cap 30 of FIGS. 3 and 6 is provided with a stopper stopper 36 protruding inward at the upper end of the opening of the through hole 33 provided in the holding portion 32. Although the stopper stopper 36 in the figure is a ridge, it may be formed in a partially protruding shape. The retaining stopper 36 holds the connection body 20 so that it cannot be easily removed. In the holding cap 30, the inner shape of the through hole 33 is substantially equal to the outer shape of the connecting body 20, and the inner shape of the retaining stopper 36 is smaller than the outer shape of the connecting body 20. The holding cap 30 having this structure has a holding portion 32.
The outer peripheral edge of the connection body 20 is brought into contact with the inner peripheral surface of the through hole 33 provided in the above, so that the connection body 20 is prevented from being displaced and is held by the retaining stopper 36 so as not to come off easily. In the state where the stopper stopper 36 locks the outer peripheral edge of the connector 20, the connector 20 brings the welding projection 22 protruding from the lower surface into contact with the sealing plate 12.
【００２３】図４の保持キャップ３０は、カシメ凸条１
６を絶縁しない。カシメ凸条１６を絶縁するために絶縁
リング４１を配設している。絶縁リング４１は、ゴム状
弾性体やプラスチック等の絶縁材をリング状に成形した
ものである。絶縁リング４１は、内周縁にリング凸条４
２を設けている。リング凸条４２は、カシメ凸条１６の
内側に嵌入される形状である。この絶縁リング４１は、
カシメ凸条１６と接続体２０の外周部２４との間に配設
されて、接続体２０とカシメ凸条１６とを絶縁する。絶
縁リング４１は、外形を二次電池１０の外形にほぼ等し
くして、保持キャップ３０で定位置に保持され、さら
に、リング凸条４２をカシメ凸条１６の内側に嵌入し
て、カシメ凸条１６によっても位置ずれしないように定
位置に配設される。The holding cap 30 shown in FIG.
Do not insulate 6. An insulating ring 41 is provided to insulate the crimped ridge 16. The insulating ring 41 is formed by molding an insulating material such as a rubber-like elastic body or plastic into a ring shape. The insulating ring 41 has ring ridges 4 on its inner peripheral edge.
2 is provided. The ring ridge 42 has a shape to be fitted inside the caulking ridge 16. This insulating ring 41 is
It is arranged between the crimping ridge 16 and the outer peripheral portion 24 of the connecting body 20, and insulates the connecting body 20 and the crimping ridge 16 from each other. The insulating ring 41 has an outer shape substantially equal to the outer shape of the secondary battery 10 and is held at a fixed position by the holding cap 30. Further, the ring ridge 42 is fitted inside the caulking ridge 16 to form a caulking ridge. It is arranged at a fixed position so as not to be displaced even by 16.
【００２４】図４の保持キャップ３０は、保持部３２で
カシメ凸条１６を絶縁しないので、貫通孔３３を大きく
して、保持部３２の幅を狭くしている。大きな貫通孔３
３は、カシメ凸条１６の上方に配設される接続体２０の
外周部２４を、図において上に配設している外装缶１１
の底面に表出させる。保持部３２は、接続体２０の外周
縁の上面に位置して、接続体２０を抜け難いように定位
置に保持する。接続体２０の外形は二次電池１０の外形
にほぼ等しく、第１筒部３７と第２筒部３８の内面に当
接して水平方向のずれが阻止される。さらに、この図の
接続体２０は、内周部２３と外周部２４との間に段差を
設けているので、この段差部２５を絶縁リング４１の内
周面に当接して、定位置に配置される。Since the holding cap 30 of FIG. 4 does not insulate the caulking ridges 16 by the holding portion 32, the through hole 33 is enlarged and the width of the holding portion 32 is narrowed. Large through hole 3
3 is the outer can 11 in which the outer peripheral portion 24 of the connecting body 20 arranged above the crimped ridge 16 is arranged above in the drawing.
Expose on the bottom of the. The holding portion 32 is located on the upper surface of the outer peripheral edge of the connection body 20 and holds the connection body 20 at a fixed position so as not to come off easily. The outer shape of the connection body 20 is substantially the same as the outer shape of the secondary battery 10, and contacts the inner surfaces of the first tubular portion 37 and the second tubular portion 38 to prevent horizontal displacement. Further, since the connecting body 20 of this figure has a step between the inner peripheral portion 23 and the outer peripheral portion 24, the step portion 25 is brought into contact with the inner peripheral surface of the insulating ring 41 and disposed at a fixed position. To be done.
【００２５】図３と図６の保持キャップ３０は、保持部
３２の抜止ストッパ３６で接続体２０を抜け難いように
保持し、図４の保持キャップ３０は、保持部３２で接続
体２０を抜け難いように保持するが、本発明は、保持キ
ャップが接続体を定位置に保持する構造を以上のものに
特定しない。保持キャップは、接続体を保持部の貫通孔
に抜け難いように嵌着して定位置に保持することができ
る。また、プラスチック製の保持キャップを成形すると
きに、接続体をインサートして定位置に保持することも
でき、さらに、接続体を接着して定位置に保持すること
もできる。The holding cap 30 of FIG. 3 and FIG. 6 holds the connecting body 20 by the retaining stopper 36 of the holding portion 32 so that the holding body 30 does not easily come off, and the holding cap 30 of FIG. While holding it difficult, the present invention does not specify the structure by which the holding cap holds the connector in place. The holding cap can be fitted in the through hole of the holding portion so as not to come off easily and can be held in a fixed position. Further, when molding the plastic holding cap, the connector can be inserted and held in place, and the connector can also be bonded and held in place.
【００２６】さらに、第１筒部と第２筒部とを備える保
持キャップは、必ずしも接続体を抜け難いように保持す
る必要はない。それは、第１筒部に挿入される二次電池
と、第２筒部に挿入される二次電池とで、接続体を挟着
して所定の位置に保持できるからである。たとえば、保
持キャップは、図３に示す保持キャップ３０に抜止スト
ッパ３６を設けない形状とすることもできる。この保持
キャップは、図示しないが、保持部の貫通孔の内周面に
接続体の外周縁を当接させて位置決めし、第１筒部と第
２筒部に挿入される二次電池で接続体を挟着して所定の
位置に保持できる。Further, the holding cap provided with the first tubular portion and the second tubular portion does not necessarily have to be held so that the connecting body is not easily removed. This is because the connecting body can be sandwiched and held at a predetermined position by the secondary battery inserted in the first tubular portion and the secondary battery inserted in the second tubular portion. For example, the holding cap may have a shape in which the retaining stopper 36 shown in FIG. Although not shown, this holding cap is positioned by bringing the outer peripheral edge of the connector into contact with the inner peripheral surface of the through hole of the holding portion, and connecting with the secondary battery inserted into the first and second cylindrical portions. The body can be clamped and held in place.
【００２７】さらに、図示しないが、保持キャップは、
図４に示す保持キャップ３０に保持部３２を設けない形
状とすることもできる。この構造の保持キャップは、接
続体の外周縁を保持キャップの内周面に当接させて、あ
るいは、接続体の段差部を絶縁リングの内周面に当接さ
せて接続体を位置決めし、第１筒部と第２筒部に挿入さ
れる二次電池で接続体を挟着して所定の位置に保持でき
る。さらに、この保持キャップは、絶縁リングをプラス
チックで一体的に成形することもできる。Further, although not shown, the holding cap is
The holding cap 30 shown in FIG. 4 may have a shape without the holding portion 32. The holding cap of this structure positions the connecting body by bringing the outer peripheral edge of the connecting body into contact with the inner peripheral surface of the holding cap or by bringing the stepped portion of the connecting body into contact with the inner peripheral surface of the insulating ring. The connection body can be sandwiched and held at a predetermined position by the secondary batteries inserted into the first cylinder portion and the second cylinder portion. In addition, the retaining cap can also have the insulating ring integrally molded of plastic.
【００２８】保持キャップ３０は、温度センサー５０を
配設するための装着部３９を有する。図５と図８に示す
保持キャップ３０は、第１筒部３７と第２筒部３８に装
着部３９を設けている。図７に示す保持キャップ３０
は、筒部３１に装着部３９を設けている。装着部３９
は、ここに温度センサー５０を入れて配設するので、そ
の幅を温度センサー５０の幅よりも広くしている。装着
部３９は、その幅を温度センサー５０の幅にほぼ等しく
して、温度センサー５０を嵌着できる構造として、正確
な位置に装着できる。図５と図８に示す保持キャップ３
０の装着部３９は、第１筒部３７と第２筒部３８の両面
に貫通する切除部としている。図７の保持キャッ３０プ
も、筒部３１の両面に貫通する切除部としている。この
構造の保持キャップ３０は、装着部３９に配設される温
度センサー５０を直接に二次電池１０に接触できる。二
次電池１０に接触する温度センサー５０は、電池温度を
速やかに検出できる。The holding cap 30 has a mounting portion 39 for mounting the temperature sensor 50. The holding cap 30 shown in FIGS. 5 and 8 is provided with a mounting portion 39 on the first tubular portion 37 and the second tubular portion 38. The holding cap 30 shown in FIG.
Is provided with a mounting portion 39 on the tubular portion 31. Mounting part 39
Since the temperature sensor 50 is placed here, the width is made wider than that of the temperature sensor 50. The mounting portion 39 has a width substantially equal to the width of the temperature sensor 50 so that the temperature sensor 50 can be fitted therein and can be mounted at an accurate position. Holding cap 3 shown in FIGS. 5 and 8
The mounting portion 39 of 0 is a cutout portion that penetrates both surfaces of the first tubular portion 37 and the second tubular portion 38. The holding cap 30 of FIG. 7 is also a cutout portion that penetrates both surfaces of the tubular portion 31. The holding cap 30 having this structure can directly contact the temperature sensor 50 provided in the mounting portion 39 with the secondary battery 10. The temperature sensor 50 in contact with the secondary battery 10 can quickly detect the battery temperature.
【００２９】保持キャップ３０の装着部３９は、図９に
示すように、第１筒部３７と第２筒部３８の境界部分に
設けた貫通孔とすることもできる。この保持キャップ３
０は、第１筒部３７と第２筒部３８を縦方向に完全に切
除することなく、第１筒部３７と第２筒部３８の端部を
連結部３７Ａ、３８Ａで連結している。このため、この
保持キャップ３０は、二次電池の端部を挿入した状態で
の連結強度を高くできる。ただ、保持キャップは、第１
筒部と第２筒部のどちらか一方のみを連結部で連結し、
他方を完全に切除することもできる。さらにまた、保持
キャップの装着部は、必ずしも筒部を貫通させることな
く、図１０の拡大断面図に示すように、凹部とすること
もできる。この保持キャップ３０は、凹部である装着部
３９に配設される温度センサー５０と二次電池１０との
間に、装着部３９の底シート３９Ａが介在する。底シー
ト３９Ａを薄くして、温度センサー５０が二次電池１０
の温度を速やかに検出できるようにできる。As shown in FIG. 9, the mounting portion 39 of the holding cap 30 may be a through hole provided at the boundary between the first tubular portion 37 and the second tubular portion 38. This holding cap 3
No. 0 connects the end portions of the first tubular portion 37 and the second tubular portion 38 with the connecting portions 37A and 38A without completely cutting the first tubular portion 37 and the second tubular portion 38 in the vertical direction. . Therefore, the holding cap 30 can increase the connection strength when the end portion of the secondary battery is inserted. However, the holding cap is the first
Only one of the cylinder and the second cylinder is connected by the connecting part,
The other can be completely excised. Furthermore, the mounting portion of the holding cap may be a recess, as shown in the enlarged cross-sectional view of FIG. 10, without necessarily penetrating the tubular portion. In the holding cap 30, the bottom sheet 39A of the mounting portion 39 is interposed between the temperature sensor 50 arranged in the mounting portion 39, which is a recess, and the secondary battery 10. The thickness of the bottom sheet 39A is reduced so that the temperature sensor 50 has the secondary battery 10
The temperature of can be detected quickly.
【００３０】温度センサー５０は、温度を検出する本体
部の両側にリード板５１を突出するように接続してい
る。本体部は、保持キャップ３０の装着部３９に配設さ
れる。温度センサー５０は、検出温度が設定温度よりも
高くなると電気抵抗が急激に増加するＰＴＣである。Ｐ
ＴＣである温度センサー５０は、リード板５１をスポッ
ト溶接や半田付け等の方法で接続して、互いに直列に接
続される。温度センサー５０は、二次電池１０の全ての
境界に配設する必要はない。それは、ひとつの温度セン
サー５０でふたつの二次電池１０の温度を検出できるか
らである。組電池は、温度センサー５０を配設する電池
境界と、温度センサー５０を配設しない電池境界とが交
互になるようにして、全ての電池温度を検出できる。図
２の温度センサー５０は、電池表面でリード板５１の幅
を広くして、電池温度をリード板５１に効率よく熱伝導
できる構造としている。この構造の温度センサー５０
は、電池温度をより速やかに検出できる。温度センサー
５０のリード板５１と二次電池１０の外装缶１１との間
には絶縁シート６１が配設される。この絶縁シート６１
は、二次電池１０の外装缶１１を被覆する絶縁シート、
あるいはリード板５１を被覆する絶縁シートのいずれか
である。外装缶を絶縁シートで被覆している二次電池
は、温度センサーのリード板を密着させて絶縁できる。The temperature sensor 50 has lead plates 51 connected so as to project from both sides of the body for detecting the temperature. The main body portion is arranged in the mounting portion 39 of the holding cap 30. The temperature sensor 50 is a PTC whose electric resistance sharply increases when the detected temperature becomes higher than the set temperature. P
The temperature sensors 50, which are TCs, are connected in series with each other by connecting the lead plates 51 by a method such as spot welding or soldering. The temperature sensor 50 does not have to be arranged at all boundaries of the secondary battery 10. This is because one temperature sensor 50 can detect the temperatures of the two secondary batteries 10. In the battery pack, all battery temperatures can be detected by alternating battery boundaries where the temperature sensor 50 is arranged and battery boundaries where the temperature sensor 50 is not arranged. The temperature sensor 50 of FIG. 2 has a structure in which the width of the lead plate 51 is wide on the surface of the battery so that the battery temperature can be efficiently conducted to the lead plate 51. Temperature sensor 50 with this structure
Can detect the battery temperature more quickly. An insulating sheet 61 is arranged between the lead plate 51 of the temperature sensor 50 and the outer can 11 of the secondary battery 10. This insulation sheet 61
Is an insulating sheet that covers the outer can 11 of the secondary battery 10,
Alternatively, it is either an insulating sheet that covers the lead plate 51. In the secondary battery in which the outer can is covered with an insulating sheet, the lead plate of the temperature sensor can be closely attached to insulate it.
【００３１】温度センサー５０は、熱伝導に優れた接着
剤を介して本体部を装着部３９に接着し、あるいはリー
ド板５１を電池表面に接着してしっかりと固定できる。
ただし、温度センサー５０を定位置に配設する状態で、
表面を熱収縮チューブ６２で被覆して、温度センサー５
０を定位置に固定することもできる。熱収縮チューブ６
２は、本体部とリード板５１を二次電池１０に密着させ
る。このため、熱収縮チューブ６２で被覆する組電池
は、温度センサー５０で速やかに電池温度を検出でき
る。温度センサー５０を接着して二次電池１０に固定す
る組電池も、表面を熱収縮チューブ６２で被覆して温度
検出を速やかにできる。The temperature sensor 50 can be firmly fixed by adhering the main body portion to the mounting portion 39 or the lead plate 51 to the battery surface via an adhesive having excellent heat conduction.
However, with the temperature sensor 50 in place,
The surface is covered with a heat-shrinkable tube 62, and the temperature sensor 5
It is also possible to fix 0 in place. Heat shrink tube 6
2, the main body portion and the lead plate 51 are brought into close contact with the secondary battery 10. Therefore, the battery pack covered with the heat-shrinkable tube 62 can quickly detect the battery temperature by the temperature sensor 50. The assembled battery in which the temperature sensor 50 is adhered and fixed to the secondary battery 10 can also be quickly detected in temperature by covering the surface with the heat shrinkable tube 62.
【００３２】温度センサー５０にはＰＴＣが適している
が、ＰＴＣに代わって、サーミスタ等の温度を電気的に
検出できる全ての素子を使用できる。また、温度センサ
ーは、必ずしも直列に接続する必要はなく、各々の温度
センサーの出力を別々に引き出すこともできる。Although PTC is suitable for the temperature sensor 50, any element such as a thermistor capable of electrically detecting temperature can be used instead of PTC. Further, the temperature sensors do not necessarily have to be connected in series, and the output of each temperature sensor can be extracted separately.
【００３３】以上の組電池は、一方の二次電池１０の封
口板１２と他方の二次電池１０の外装缶１１とを接続体
２０で接続している。二次電池１０は、封口板１２を第
１の電極、外装缶１１を第２の電極としているので、封
口板１２に接続される接続体２０が外装缶１１の一部で
あるカシメ凸条１６に接触するとショートする。したが
って、図３と図６の組電池は、接続体２０とカシメ凸条
１６とを保持キャップ３０で絶縁している。図４の組電
池は、接続体２０とカシメ凸条１６とを絶縁リング４１
で絶縁している。In the assembled battery described above, the sealing plate 12 of one secondary battery 10 and the outer can 11 of the other secondary battery 10 are connected by the connector 20. Since the secondary battery 10 uses the sealing plate 12 as the first electrode and the outer can 11 as the second electrode, the connector 20 connected to the sealing plate 12 is a caulking ridge 16 which is a part of the outer can 11. It will be shorted if it touches. Therefore, in the battery packs of FIGS. 3 and 6, the connector 20 and the crimped ridge 16 are insulated by the holding cap 30. In the assembled battery of FIG. 4, the connecting ring 20 and the crimped ridge 16 are insulated by an insulating ring 41.
Insulated.
【００３４】これ等の図に示す接続体２０は、金属板を
プレス成形して製作される。接続体２０は、鉄板等の下
地金属板の両面に金属メッキ層を設けている。金属メッ
キ層は、導電性に優れた電気抵抗の小さい導電メッキ層
と、この導電メッキ層の表面に積層している溶接に適し
た抵抗メッキ層とからなる。導電メッキ層は、銅や銀、
あるいはこれ等の合金であって、下地金属板と抵抗メッ
キ層よりも電気抵抗の小さいメッキ層である。抵抗メッ
キ層は、ニッケルやクローム、あるいはこれらの合金で
あって、導電メッキ層よりも電気抵抗が大きいメッキ層
である。この接続体２０は、抵抗メッキ層で発熱しやす
く、電池端面に速やかに溶接される。また導電メッキ層
によって電気抵抗が小さく、二次電池１０を低抵抗な状
態で直列に接続できる。The connecting body 20 shown in these figures is manufactured by pressing a metal plate. The connection body 20 is provided with metal plating layers on both sides of a base metal plate such as an iron plate. The metal plating layer is composed of a conductive plating layer having excellent conductivity and low electric resistance, and a resistance plating layer laminated on the surface of the conductive plating layer and suitable for welding. The conductive plating layer is copper or silver,
Alternatively, these alloys are plating layers having electric resistance smaller than that of the base metal plate and the resistance plating layer. The resistance plating layer is nickel, chrome, or an alloy thereof, and has a higher electric resistance than the conductive plating layer. The connection body 20 easily generates heat in the resistance plating layer and is quickly welded to the end surface of the battery. Further, the conductive plating layer has a small electric resistance, and the secondary batteries 10 can be connected in series in a low resistance state.
【００３５】接続体２０は、対向して配設される隣接二
次電池１０の電池端面に溶接して接続されて、二次電池
１０を直列に電気接続している。図１１〜図１４は、接
続体２０を示している。図１１と図１２は、図３と図６
に示す組電池の接続体２０を、図１３と図１４は、図４
に示す組電池の接続体２０をそれぞれ示している。図１
１と図１３は平面図、図１２と図１４は断面図である。
これ等の接続体２０は、金属板を穴のあるリング状に成
形して、両面に突出して電池端面に溶接される複数の溶
接凸部２２を設けている。両面に突出している溶接凸部
２２は、対向する電池端面の第１の電極と第２の電極に
溶接されて、隣接して配設している二次電池１０を直列
に接続する。さらに、図の接続体２０は、中心孔２１を
設けて、ここに凸部電極１３を配設している。接続体
は、中心孔を開口することなく、凸部電極を案内する部
分を突出させる形状とすることもできる。The connecting body 20 is welded and connected to the battery end faces of the adjacent secondary batteries 10 arranged opposite to each other to electrically connect the secondary batteries 10 in series. 11 to 14 show the connection body 20. 11 and 12 show FIGS. 3 and 6.
13 and 14 show the battery pack connection body 20 shown in FIG.
The connection body 20 of the assembled battery shown in FIG. Figure 1
1 and 13 are plan views, and FIGS. 12 and 14 are cross-sectional views.
These connecting bodies 20 are formed by forming a metal plate into a ring shape having a hole, and are provided with a plurality of welding projections 22 protruding on both surfaces and welded to the battery end surface. The welding protrusions 22 protruding on both sides are welded to the first electrode and the second electrode on the opposing battery end faces to connect the secondary batteries 10 arranged adjacent to each other in series. Further, the connecting body 20 shown in the figure has a central hole 21 in which the convex electrode 13 is arranged. The connection body may have a shape in which a portion for guiding the convex electrode is projected without opening the central hole.
【００３６】図１１と図１２に示す接続体２０は、図３
に示すように、電池端面に設けられているカシメ凸条１
６の内形よりも外形を小さくしている。この接続体２０
は、外周縁とカシメ凸条１６との間に隙間を設けて、接
続体２０がカシメ凸条１６に接触してショートするのを
阻止している。接続体２０は、位置がずれるとカシメ凸
条１６に接触するので、接続体２０を保持キャップ３０
で定位置に保持している。この接続体２０は、同一の円
周上に複数の溶接凸部２２を設けている。溶接凸部２２
は、交互に反対面、図１２において上下に突出してい
る。反対面に突出する溶接凸部２２は、対向して配設さ
れる電池端面に溶接して接続される。The connecting body 20 shown in FIGS. 11 and 12 is the same as that shown in FIG.
As shown in Fig. 1, the caulking ridge 1 provided on the end surface of the battery
The outer shape is smaller than the inner shape of 6. This connection 20
Provides a gap between the outer peripheral edge and the crimped ridge 16 to prevent the connector 20 from coming into contact with the crimped ridge 16 and causing a short circuit. When the connection body 20 is displaced, the connection body 20 comes into contact with the caulking ridge 16. Therefore, the connection body 20 holds the connection body 20.
Is held in place. This connecting body 20 is provided with a plurality of welding protrusions 22 on the same circumference. Weld protrusion 22
Alternately project from the opposite surface, that is, vertically in FIG. The welding projections 22 projecting to the opposite surface are welded and connected to the battery end surfaces arranged opposite to each other.
【００３７】図１３と図１４に示す接続体２０は、図４
に示すように、電池端面に設けているカシメ凸条１６の
内形よりも外形を大きくしている。図４の接続体２０
は、二次電池１０の外形にほぼ等しい外形としている。
この接続体２０は、内周部２３と外周部２４とに段差の
ある形状に、金属板をプレス成形している。内周部２３
は封口板１２の表面に接近する位置に配設され、外周部
２４は絶縁リング４１の表面で外装缶１１の底面に接近
する位置に配設される。接続体２０は、内周部２３と外
周部２４に、各々溶接するために複数の溶接凸部２２を
設けている。内周部２３の溶接凸部２２は、封口板１２
の方向に突出して封口板１２に溶接される。外周部２４
の溶接凸部２２は、外装缶１１の底面に向かって突出し
て外装缶１１の底面に溶接される。内周部２３と外周部
２４の溶接凸部２２が、対向する二次電池１０に溶接さ
れて、二次電池１０は直列に接続される。The connecting body 20 shown in FIGS. 13 and 14 is the same as that shown in FIG.
As shown in, the outer shape is larger than the inner shape of the crimping ridge 16 provided on the end surface of the battery. Connection body 20 of FIG.
Has an outer shape substantially equal to the outer shape of the secondary battery 10.
The connecting body 20 is formed by press forming a metal plate into a shape having a step between the inner peripheral portion 23 and the outer peripheral portion 24. Inner circumference 23
Is arranged at a position close to the surface of the sealing plate 12, and the outer peripheral portion 24 is arranged at a position close to the bottom surface of the outer can 11 on the surface of the insulating ring 41. The connecting body 20 is provided with a plurality of welding protrusions 22 for welding on the inner peripheral portion 23 and the outer peripheral portion 24, respectively. The welding convex portion 22 of the inner peripheral portion 23 is the sealing plate 12
And is welded to the sealing plate 12. Perimeter 24
The welding convex portion 22 of is projected toward the bottom surface of the outer can 11 and is welded to the bottom surface of the outer can 11. The welding protrusions 22 of the inner peripheral portion 23 and the outer peripheral portion 24 are welded to the opposing secondary battery 10, and the secondary batteries 10 are connected in series.
【００３８】[0038]
【発明の効果】本発明の温度センサーを備える組電池
は、少ない数の温度センサーで二次電池の温度を正確に
検出できる特長がある。それは、本発明の組電池が、直
線状に連結される二次電池の間に、筒部を有する保持キ
ャップを配設しており、この保持キャップの装着部に温
度センサーを配設して、ひとつの温度センサーでふたつ
の二次電池の温度を検出しているからである。この構造
の組電池は、保持キャップに装着される温度センサー
で、隣接するふたつの二次電池の温度を検出できるの
で、少ない数の温度センサーで複数の二次電池の温度を
正確に検出できる。さらに、本発明の組電池は、二次電
池を直線状に連結する保持キャップを、温度センサーを
定位置に装着するパーツに併用している。このため、温
度センサーを定位置に装着するための専用部品を使用す
ることなく、製造コストを低減しながら、温度センサー
を正確な位置に確実に配設できる。The assembled battery provided with the temperature sensor of the present invention has a feature that the temperature of the secondary battery can be accurately detected with a small number of temperature sensors. That is, the assembled battery of the present invention has a holding cap having a tubular portion between secondary batteries linearly connected, and a temperature sensor is provided at a mounting portion of the holding cap. This is because one temperature sensor detects the temperatures of the two secondary batteries. In the battery pack having this structure, the temperature sensor attached to the holding cap can detect the temperature of two adjacent secondary batteries, so that the temperature of a plurality of secondary batteries can be accurately detected with a small number of temperature sensors. Further, in the assembled battery of the present invention, the holding cap that linearly connects the secondary batteries is used together with the parts for mounting the temperature sensor in a fixed position. Therefore, it is possible to surely dispose the temperature sensor at an accurate position while reducing the manufacturing cost without using a dedicated part for mounting the temperature sensor at a fixed position.
【図１】従来の温度センサーを備える組電池の概略側面
図FIG. 1 is a schematic side view of an assembled battery including a conventional temperature sensor.
【図２】本発明の一実施例にかかる温度センサーを備え
る組電池の側面図FIG. 2 is a side view of an assembled battery including a temperature sensor according to an embodiment of the present invention.
【図３】図２に示す組電池の連結構造を示す拡大断面図FIG. 3 is an enlarged cross-sectional view showing a connecting structure of the assembled battery shown in FIG.
【図４】本発明の他の実施例にかかる温度センサーを備
える組電池の連結構造を示す拡大断面図FIG. 4 is an enlarged cross-sectional view showing an assembled battery connecting structure including a temperature sensor according to another embodiment of the present invention.
【図５】図３に示す組電池の保持キャップの断面図5 is a sectional view of a holding cap of the battery pack shown in FIG.
【図６】本発明の他の実施例にかかる温度センサーを備
える組電池の連結構造を示す拡大断面図FIG. 6 is an enlarged cross-sectional view showing an assembled battery connecting structure including a temperature sensor according to another embodiment of the present invention.
【図７】図６に示す組電池の保持キャップの断面図7 is a sectional view of a holding cap of the battery pack shown in FIG.
【図８】図５に示す保持キャップの斜視図FIG. 8 is a perspective view of the holding cap shown in FIG.
【図９】保持キャップの他の一例を示す斜視図FIG. 9 is a perspective view showing another example of the holding cap.
【図１０】保持キャップの他の一例を示す拡大断面図FIG. 10 is an enlarged cross-sectional view showing another example of the holding cap.
【図１１】図３に示す組電池の接続体を示す平面図FIG. 11 is a plan view showing a connected body of the assembled battery shown in FIG.
【図１２】図１１に示す接続体のＡ−Ａ線断面図12 is a cross-sectional view taken along the line AA of the connection body shown in FIG.
【図１３】図４に示す組電池の接続体を示す平面図FIG. 13 is a plan view showing a connected body of the assembled battery shown in FIG.
【図１４】図１３に示す接続体のＡ−Ａ線断面図14 is a cross-sectional view taken along the line AA of the connection body shown in FIG.
１０…二次電池 １１…外装缶 １２…封口板 １３…凸部電極 １４…ガスケット １５…溝部 １６…カシメ凸条 ２０…接続体 ２１…中心孔 ２２…溶接凸部 ２３…内周部 ２４…外周部 ２５…段差部 ３０…保持キャップ ３１…筒部 ３２…保持部 ３３…貫通孔 ３４…係止凸部 ３５…凸部リング ３６…抜止ストッパ ３７…第１筒部 ３７Ａ…連結部 ３８…第２筒部 ３８Ａ…連結部 ３９…装着部 ３９Ａ…底シート ４１…絶縁リング ４２…リング凸条 ５０…温度センサー ５１…リード板 ５９…リード線 ６１…絶縁シート ６２…熱収縮チューブ 10 ... Secondary battery 11 ... Exterior can 12 ... Sealing plate 13 ... Convex electrode 14 ... Gasket 15 ... Groove 16 ... Caulking convex strip 20 ... Connected body 21 ... central hole 22 ... Welding protrusion 23 ... Inner circumference 24 ... Outer periphery 25 ... Step 30 ... Retaining cap 31 ... Cylinder 32 ... Holding unit 33 ... Through hole 34 ... Locking protrusion 35 ... convex ring 36 ... Stopper stopper 37 ... 1st cylinder part 37A ... Connection part 38 ... 2nd cylinder part 38A ... Connection part 39 ... Mounting part 39A ... Bottom sheet 41 ... Insulation ring 42 ... Ring ridge 50 ... Temperature sensor 51 ... Lead plate 59 ... Lead wire 61 ... Insulation sheet 62 ... Heat shrink tube
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H030 AA09 AS08 FF22 5H040 AA27 AS07 AY06 DD26 GG26 5H115 PA11 PA15 PG04 PI16 PO02 PU01 PU21 SE06 TI00 TO05 TR19 TU16 TU17 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 5H030 AA09 AS08 FF22 5H040 AA27 AS07 AY06 DD26 GG26 5H115 PA11 PA15 PG04 PI16 PO02 PU01 PU21 SE06 TI00 TO05 TR19 TU16 TU17
Claims (5)
線状に連結している組電池であって、 連結される二次電池(10)の間に、一方または両方の二次
電池(10)の端部を挿入する筒部を有する保持キャップ(3
0)を配設しており、この保持キャップ(30)に温度センサ
ー(50)を配設する装着部(39)を設けており、この装着部
(39)に温度センサー(50)を配設して、ひとつの温度セン
サー(50)でふたつの二次電池(10)の温度を検出するよう
にしてなる温度センサーを備える組電池。1. An assembled battery in which a plurality of secondary batteries (10) are connected in series and linearly connected, and one or both of the secondary batteries (10) are connected between the connected secondary batteries (10). Retaining cap (3) that has a tube into which the end of the secondary battery (10) is inserted
(0) is provided, and the holding cap (30) is provided with a mounting part (39) for mounting the temperature sensor (50).
An assembled battery provided with a temperature sensor (50) arranged in (39), wherein the temperature sensor (50) detects the temperature of two secondary batteries (10).
の両面に貫通している切除部、貫通孔、凹部のいずれか
である請求項１に記載される温度センサー(50)を備える
組電池。2. The temperature sensor (50) according to claim 1, wherein the mounting portion (39) of the holding cap (30) is any one of a cutout portion, a through hole, and a concave portion which penetrate both sides of the tubular portion. ) Equipped battery.
一方の二次電池(10)の端部を挿入して連結する第１筒部
(37)と、他方の二次電池(10)の端部を挿入して連結する
第２筒部(38)からなる筒部を有し、第１筒部(37)と第２
筒部(38)とは互いに直線状に配設されている請求項１に
記載される温度センサーを備える組電池。3. A first cylinder part for holding cap (30) to insert and connect one end of one secondary battery (10) connected to each other.
(37) and a second tubular portion (38) into which the end portion of the other secondary battery (10) is inserted and connected, and the first tubular portion (37) and the second tubular portion (38)
The assembled battery provided with the temperature sensor according to claim 1, wherein the temperature sensor and the tubular portion (38) are linearly arranged.
気接続する接続体(20)を配設しており、保持キャップ(3
0)がこの接続体(20)を定位置に保持する保持部(32)を有
する請求項１に記載される温度センサーを備える組電
池。4. A connecting body (20) for electrically connecting the secondary battery (10) is disposed between the secondary batteries (10), and the holding cap (3
The assembled battery provided with the temperature sensor according to claim 1, wherein 0) has a holding portion (32) for holding the connection body (20) in a fixed position.
面との間を絶縁する絶縁リング(41)を一体的に成形して
設けている請求項１に記載される温度センサーを備える
組電池。5. The temperature sensor according to claim 1, wherein the holding cap (30) is integrally formed with an insulating ring (41) for insulating between the connection body (20) and the battery end surface. A battery pack provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002046340A JP2003249272A (en) | 2002-02-22 | 2002-02-22 | Battery pack equipped with temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002046340A JP2003249272A (en) | 2002-02-22 | 2002-02-22 | Battery pack equipped with temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003249272A true JP2003249272A (en) | 2003-09-05 |
Family
ID=28659784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002046340A Pending JP2003249272A (en) | 2002-02-22 | 2002-02-22 | Battery pack equipped with temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003249272A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006190607A (en) * | 2005-01-07 | 2006-07-20 | Sanyo Electric Co Ltd | Battery module |
| CN102055041A (en) * | 2010-12-01 | 2011-05-11 | 深圳市豪鹏科技有限公司 | Battery pack temperature-sensing device and battery pack |
| CN111751732A (en) * | 2020-07-31 | 2020-10-09 | 中国汽车工程研究院股份有限公司 | Electric quantity calculation method based on self-adaptive Gaussian convolution component method |
| CN113875069A (en) * | 2019-05-09 | 2021-12-31 | 株式会社东芝 | Accumulator device |
-
2002
- 2002-02-22 JP JP2002046340A patent/JP2003249272A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006190607A (en) * | 2005-01-07 | 2006-07-20 | Sanyo Electric Co Ltd | Battery module |
| JP4518958B2 (en) * | 2005-01-07 | 2010-08-04 | 三洋電機株式会社 | Battery module |
| CN102055041A (en) * | 2010-12-01 | 2011-05-11 | 深圳市豪鹏科技有限公司 | Battery pack temperature-sensing device and battery pack |
| CN113875069A (en) * | 2019-05-09 | 2021-12-31 | 株式会社东芝 | Accumulator device |
| CN111751732A (en) * | 2020-07-31 | 2020-10-09 | 中国汽车工程研究院股份有限公司 | Electric quantity calculation method based on self-adaptive Gaussian convolution component method |
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