JP5641387B2 - Battery pack - Google Patents

Battery pack Download PDF

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JP5641387B2
JP5641387B2 JP2009246758A JP2009246758A JP5641387B2 JP 5641387 B2 JP5641387 B2 JP 5641387B2 JP 2009246758 A JP2009246758 A JP 2009246758A JP 2009246758 A JP2009246758 A JP 2009246758A JP 5641387 B2 JP5641387 B2 JP 5641387B2
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battery
storage case
plate
battery storage
batteries
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JP2011096398A (en
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修 牛嶌
修 牛嶌
増田　英樹
英樹 増田
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GS Yuasa International 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

Description

本発明は、電池を収納する電池収納ケースを備えた電池パックに関するものである。   The present invention relates to a battery pack including a battery storage case for storing a battery.

複数個の電池を電池収納ケースに収納した電池パックは、自動車など移動体の電源や非常用電源として用いられる。これら電池パックは充放電時に大電流を流すことが多く、電池に大電流を流した際には、ジュール熱などで電池が高温となり、さらに、電池から発生した熱で電池収納ケース内が高温状態となる。また、大電流での充放電を行わなくても、高温雰囲気中でこれら電池パックを使用することが多い。   A battery pack in which a plurality of batteries are stored in a battery storage case is used as a power source for a moving body such as an automobile or an emergency power source. These battery packs often carry a large current during charging and discharging, and when a large current flows through the battery, the battery becomes hot due to Joule heat, etc., and the battery storage case is in a high temperature state due to the heat generated from the battery. It becomes. Further, these battery packs are often used in a high temperature atmosphere without charging and discharging with a large current.

電池パックの電池が高温状態になると、電池の安全性が低下するばかりか、電池が長時間、高温状態にあることで電池の寿命が短くなるという虞がある。そこで、特許文献１に記載されているように、電池収納ケースに冷却媒体を吸気する吸気口および排気する排気口を設けて、電池間の隙間に冷却媒体を流して電池を冷却する方法がある。   When the battery of the battery pack is in a high temperature state, not only the safety of the battery is lowered, but there is a possibility that the life of the battery is shortened because the battery is in a high temperature state for a long time. Therefore, as described in Patent Document 1, there is a method of cooling the battery by providing the battery storage case with an intake port for sucking a cooling medium and an exhaust port for discharging the cooling medium, and flowing the cooling medium through a gap between the batteries. .

一方、上記のような電池収納ケースでは電池と電池収納ケースの底盤部との間にスペーサーを備えて電池を支持する方法や、電池と電池収納ケースの側壁部との間にスペーサーを備えて電池の位置を固定する方法がある。特に、重量のある電池を収納する場合には、強度の観点から電池収納ケースの材質に金属が用いられることが多く、スペーサーの材質に絶縁性の有するものを用いることで、電池と電池ケースとの絶縁の役割も果たす。また、電池と電池収納ケースとの間にスペーサーを備えて電池を固定する方法は、電池を固定するための結束部材を用いて、その結束部材と電池収納ケースとを螺子等で係止する方法と比較して、係止の作業を省くことができ、容易な作業で電池を固定することができる。   On the other hand, in the battery storage case as described above, a method of supporting the battery by providing a spacer between the battery and the bottom plate of the battery storage case, or a battery having a spacer between the battery and the side wall of the battery storage case. There is a way to fix the position of. In particular, when storing a heavy battery, metal is often used as the material of the battery storage case from the viewpoint of strength, and by using an insulating material for the spacer, the battery and the battery case Also plays the role of insulation. A method of fixing a battery by providing a spacer between the battery and the battery storage case is a method of using a binding member for fixing the battery and locking the binding member and the battery storage case with a screw or the like. Compared to the above, the locking operation can be omitted, and the battery can be fixed by an easy operation.

特開２００６−１２８１２４号公報JP 2006-128124 A

上記のように電池と電池収納ケースとの間にスペーサーを備えた電池パックにおいて、電池間の隙間以外に、電池と電池収納ケースとの間の空間を冷却媒体の流路の一部として用いる場合、その空間にはスペーサーが存在しているため、十分な量の冷却媒体を流すことができず、その結果、電池間の隙間を流れる冷却媒体の量が制限されて、電池を効率よく冷却できないという問題があった。   In the battery pack provided with the spacer between the battery and the battery storage case as described above, the space between the battery and the battery storage case is used as a part of the flow path of the cooling medium in addition to the gap between the batteries. Since there is a spacer in the space, a sufficient amount of cooling medium cannot flow, and as a result, the amount of cooling medium flowing through the gap between the batteries is limited, and the battery cannot be cooled efficiently. There was a problem.

そこで、本発明は、電池と電池ケースとの間の空間に電池を固定するためのスペーサーが備えられており、その空間を冷却媒体の流路の一部として使用する場合においても、電池を効率良く冷却することができる電池パックを提供することを課題とする。   Therefore, the present invention is provided with a spacer for fixing the battery in a space between the battery and the battery case, and the battery is efficiently used even when the space is used as a part of the flow path of the cooling medium. It is an object to provide a battery pack that can be cooled well.

本発明は、隙間を介して配置された複数の電池と、前記電池を収納する電池収納ケースと、前記電池収納ケースに設けられた冷却媒体を吸気する吸気口および排気する排気口と、前記電池と前記電池収納ケースとの間に備えられたスペーサーとを備えた電池パックにおいて、前記スペーサーは、前記電池収納ケースに当接する第１の板状部と、前記電池収納ケースとの間に空間を介在して前記電池と当接する第２の板状部と、前記第１の板状部の側縁と前記第２の板状部の側縁とを連結する支持部とを備えており、少なくとも前記第２の板状部の前記電池間の隙間が接する位置に孔部が設けられ、前記孔部を介して、前記電池間の隙間と、前記第２の板状部と前記電池収納ケースとの間の空間とが連通していることを特徴としている。 The present invention provides a plurality of batteries arranged through a gap, a battery storage case for storing the batteries, an intake port for sucking and exhausting a cooling medium provided in the battery storage case, and the battery And a spacer provided between the battery storage case and the battery storage case, the spacer has a space between the battery storage case and the first plate-like portion that contacts the battery storage case. interposed to said battery and the second plate-shaped portion abutting, and a support portion which connects the side edges of the first of the side edge of the plate portion second plate-shaped portion, at least A hole is provided at a position where the gap between the batteries of the second plate-like portion contacts, and the gap between the batteries, the second plate-like portion, and the battery storage case via the hole. It is characterized by the communication with the space between.

上記の電池パックによれば、前記スペーサーの第２の板状部と前記電池収納ケースとの間には空間が介在しており、前記空間と電池間の隙間とが前記スペーサーの第２の板状部に設けられた孔部を介して連通することで、前記空間を冷却媒体の流路として用いることができる。電池と電池収納ケースとの間にスペーサーが備えられた場合においても、十分な量の冷却媒体を流すことができるので、電池と電池収納ケースとの間の流路の狭小が原因で電池パック内を流れる冷却媒体の量が制限されることはない。その結果、電池間の隙間を流れる冷却媒体を効率良く吸気および排気することができ、電池の冷却効果を高めることができる。
本発明は、隙間を介して配置された複数の電池と、前記電池を収納する電池収納ケースと、前記電池収納ケースに設けられた冷却媒体を吸気する吸気口および排気する排気口と、前記電池と前記電池収納ケースとの間に備えられたスペーサーとを備えた電池パックにおいて、前記スペーサーは、前記電池収納ケースとの間に空間を介在して前記電池と接する板状部を備えており、前記板状部の前記電池間の隙間が接する位置に孔部が設けられ、前記孔部を介して、前記電池間の隙間と、前記板状部と前記電池収納ケースとの間の空間とが連通し、前記電池収納ケースは、対向する一対の側壁部を備え、前記一対の側壁部のうちの一方の側壁部には、前記電池間の隙間に流れる前記冷却媒体を吸気する前記吸気口が設けられ、前記一対の側壁部のうちの他方の側壁部には、前記電池収納ケースと前記板状部との間の空間に流れる前記冷却媒体を排気する前記排気口が設けられることを特徴とする。 According to the battery pack, is interposed is a space between the second plate-shaped portion and the battery storage case of the spacer, the second plate of the gap between the space and the battery is the spacer The space can be used as a flow path for the cooling medium by communicating through a hole provided in the shape portion. Even in the case where a spacer is provided between the battery and the battery storage case, a sufficient amount of cooling medium can be allowed to flow, so the flow path between the battery and the battery storage case is narrowed. There is no limit to the amount of cooling medium flowing through. As a result, the cooling medium flowing through the gaps between the batteries can be efficiently sucked and exhausted, and the battery cooling effect can be enhanced.
The present invention provides a plurality of batteries arranged through a gap, a battery storage case for storing the batteries, an intake port for sucking and exhausting a cooling medium provided in the battery storage case, and the battery And a spacer provided between the battery storage case, the spacer includes a plate-like portion that contacts the battery with a space between the battery storage case, A hole is provided at a position where the gap between the batteries of the plate-like portion is in contact, and the gap between the batteries and the space between the plate-like portion and the battery storage case via the hole. The battery storage case includes a pair of opposing side wall portions, and one of the pair of side wall portions has the intake port for sucking the cooling medium flowing in the gap between the batteries. The pair of side wall portions provided The other side wall portion of the inner, and wherein the exhaust port for exhausting said cooling medium flowing through the space between the plate-shaped portion and the battery storage case is provided.

本発明は、隙間を介して配置された複数の電池と、前記電池を収納する電池収納ケースと、前記電池収納ケースに設けられた冷却媒体を吸気する吸気口および排気する排気口と、前記電池と前記電池収納ケースとの間に備えられたスペーサーとを備えた電池パックにおいて、前記電池収納ケースの内部を、前記電池を配置する第１の空間と、前記電池を監視する回路基盤を配置する第２の空間とに仕切る仕切板を備え、前記スペーサーは、前記電池収納ケースとの間に空間を介在して前記電池と接する板状部を備えており、前記板状部の前記電池間の隙間が接する位置に孔部が設けられ、前記孔部を介して、前記電池間の隙間と、前記板状部と前記電池収納ケースとの間の空間とが連通することを特徴とする。 This onset Ming, and a plurality of cells arranged via a gap, and a battery storage case for housing the battery, the battery housing to the intake of the cooling medium provided in the case inlet and exhaust port for exhausting, the In a battery pack including a battery and a spacer provided between the battery storage case, a first space in which the battery is disposed and a circuit board for monitoring the battery are disposed in the battery storage case. A partition plate partitioning into a second space, and the spacer includes a plate-like portion in contact with the battery with a space between the battery storage case and the space between the batteries of the plate-like portion. A hole is provided at a position where the gap is in contact, and the gap between the batteries and the space between the plate-like part and the battery storage case communicate with each other through the hole .

上記の電池パックによれば、前記吸気口から吸気された冷却媒体が前記回路基盤の配置された空間に流れるのを仕切板によって防ぐことができるため、冷却媒体に含まれる水分、油分および塵が前記回路基盤に付着することによる前記回路基盤の故障を防ぐことができる。   According to the battery pack, the partition plate can prevent the cooling medium sucked from the air inlet from flowing into the space in which the circuit board is disposed, so that moisture, oil, and dust contained in the cooling medium can be prevented. Failure of the circuit board due to adhesion to the circuit board can be prevented.

本発明によれば、電池と電池収納ケースとの間にスペーサーが備えられ、電池収納ケースに備えられた吸気口や排気口の位置が制限された場合であっても、電池と当接するスペーサーの板状部と電池収納ケースとの間に介在する空間を冷却媒体の流路として用いることで、吸気口から排気口までの冷却媒体の流路を確保することができ、電池を効率良く冷却することができる。   According to the present invention, the spacer is provided between the battery and the battery storage case, and even when the positions of the air inlet and the air outlet provided in the battery storage case are restricted, the spacer that contacts the battery is provided. By using the space interposed between the plate-like portion and the battery storage case as the cooling medium flow path, the cooling medium flow path from the intake port to the exhaust port can be secured, and the battery is efficiently cooled. be able to.

本発明の電池収納ケースの一実施形態を示す概略斜視図である。It is a schematic perspective view which shows one Embodiment of the battery storage case of this invention. 本発明の電池収納ケースの一実施形態を示す断面正面図である。It is a cross-sectional front view which shows one Embodiment of the battery storage case of this invention. 本発明の電池収納ケースを構成している底盤部上に電池が載せられている一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment in which the battery is mounted on the bottom board part which comprises the battery storage case of this invention. 本発明の電池収納ケースを構成している底盤部の一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment of the base part which comprises the battery storage case of this invention.

本発明に係る電池パックの一実施形態について図１ないし図４を参照しながら説明する。この電池パックは、複数個の電池１が電池収納ケースに収納されている。   An embodiment of a battery pack according to the present invention will be described with reference to FIGS. In this battery pack, a plurality of batteries 1 are stored in a battery storage case.

電池収納ケースは、図１および図２に示すように、底盤部２５と側壁部２１、２２、２３および２４を備えており、第１の側壁部２１の上部に吸気口２１ａが設けられ、第１の側壁部２１に対向している第２の側壁部２２の下部に排気口２２ａが設けられており、スペーサー１０は複数個の電池１と底盤部２５との間に備えられている。   As shown in FIGS. 1 and 2, the battery storage case includes a bottom plate part 25 and side wall parts 21, 22, 23, and 24, an air inlet 21 a is provided on the upper part of the first side wall part 21, and An exhaust port 22 a is provided at a lower portion of the second side wall portion 22 facing the one side wall portion 21, and the spacer 10 is provided between the plurality of batteries 1 and the bottom plate portion 25.

そして、吸気口２１ａは、第１の側壁部２１において、収納された電池１の上面よりも高い位置にほぼ全幅に亘って形成される。この吸気口２１ａは、冷却風Ｗが電池収納ケース内の全幅に亘って均等に吸気されるように、長穴形状に形成されるが、小孔を多数形成したものとしてもよい。また、排気口２２ａは、冷却風Ｗが電池収納ケース内を均等に流れるように多数の小孔を１列又は複数列並列させたものとされるが、長穴形状に形成してもよい。   The intake port 21a is formed in the first side wall portion 21 at a position higher than the upper surface of the battery 1 accommodated over the entire width. The intake port 21a is formed in a long hole shape so that the cooling air W is uniformly sucked over the entire width of the battery storage case, but it may be formed with a large number of small holes. Further, the exhaust port 22a is formed by arranging a large number of small holes in a row or a plurality of rows in parallel so that the cooling air W flows evenly in the battery storage case, but it may be formed in a long hole shape.

そして、スペーサー１０は、例えば図３および図４の示すように、帯板状の第１の板状部１１の側縁と帯板状の第２の板状部１２の側縁とを支持部１４で連結して一体化した形状とし、第１の板状部１１は電池収納ケースの底盤部２５と当接し、第２の板状部１２は電池１と当接しており、第２の板状部１２と電池収納ケースの底盤部２５と間には第１の空間１５が介在する。第１の板状部１１が電池収納ケースの底盤部２５と当接し、第２の板状部１２が電池１と当接することで、電池収納ケース内の電池１の位置を不安定にさせることなく、また、結束部材や螺子等を使用することなく電池を支持および固定することができる。   The spacer 10 is, for example, as shown in FIG. 3 and FIG. 4, supporting the side edge of the first plate-like portion 11 having a strip shape and the side edge of the second plate-like portion 12 having a strip shape. 14, the first plate-like portion 11 is in contact with the bottom plate portion 25 of the battery storage case, the second plate-like portion 12 is in contact with the battery 1, and the second plate A first space 15 is interposed between the shape portion 12 and the bottom plate portion 25 of the battery storage case. The position of the battery 1 in the battery storage case is made unstable by the first plate-like part 11 coming into contact with the bottom plate part 25 of the battery storage case and the second plate-like part 12 coming into contact with the battery 1. In addition, the battery can be supported and fixed without using a binding member or a screw.

第２の板状部１２には孔部１３が設けられており、この孔部１３は、隣り合う電池１どうしの間に介在する隙間１７が配置される位置に設けられている。電池１，１間に介在する隙間１７と、第２の板状部１２と電池収納ケースの底盤部２５との間に介在する空間１５は、第２の板状部１２に設けられた孔部１３と介して連通している。また、図４に示すように、第２の板状部１２に設けられた孔部１３を支持部１４にまで延長させて、支持部１４にも開孔部を設けてもよい。   A hole 13 is provided in the second plate-like part 12, and the hole 13 is provided at a position where a gap 17 interposed between adjacent batteries 1 is arranged. The gap 17 interposed between the batteries 1 and 1 and the space 15 interposed between the second plate-like portion 12 and the bottom board portion 25 of the battery storage case are holes provided in the second plate-like portion 12. 13 to communicate with. Moreover, as shown in FIG. 4, the hole 13 provided in the second plate-like part 12 may be extended to the support part 14, and the support part 14 may be provided with an opening part.

第２の板状部１２の面積が、スペーサー１０の電池と対向している面積の半分以上であることが好ましい。第２の板状部の面積を、スペーサー１０の電池と対向している面積の半分以上にすることで、電池１とスペーサー１０とが当接する面積を広くすることができ、電池１の位置をより安定にすることができる。   The area of the second plate-like portion 12 is preferably at least half of the area of the spacer 10 facing the battery. By making the area of the second plate-shaped portion more than half of the area of the spacer 10 facing the battery, the area where the battery 1 and the spacer 10 abut can be increased, and the position of the battery 1 can be changed. It can be made more stable.

このスペーサー１０は、電池１と電池収納ケースとの間の絶縁性を確保し、かつ、電池パックの軽量化の観点から、樹脂で形成されていることが好ましい。スペーサー１０は、第１の板状部１１と支持部１４との連結部および第２の板状部１２と支持部１４との連結部に角部を有していることから、剛体が高められている。また、スペーサー１０の材質として剛体の高い金属を用いる場合は、電池１の表面、電池収納ケースの内壁の表面またはスペーサー１０の表面のいずれかに樹脂コーティングすることにより、電池１と電池収納ケースとの絶縁性を確保することができる。   The spacer 10 is preferably formed of a resin from the viewpoint of securing the insulation between the battery 1 and the battery storage case and reducing the weight of the battery pack. Since the spacer 10 has corners at the connecting portion between the first plate-like portion 11 and the support portion 14 and the connecting portion between the second plate-like portion 12 and the support portion 14, the rigid body is enhanced. ing. Further, when a metal having a high rigid body is used as the material of the spacer 10, the battery 1 and the battery storage case can be obtained by resin coating on the surface of the battery 1, the surface of the inner wall of the battery storage case, or the surface of the spacer 10. Insulating properties can be ensured.

第１の側壁部２１の外側表面には、図１に示すように、冷却風Ｗを吸気口２１ａに案内するためのフード２７が固定されている。フード２７は、第１の側壁部２１のほぼ全幅に亘る長さに形成された吸気口２１ａの幅に合わせて上部が幅広に、中間部及び下部が幅狭の側面視Ｔ字形状に形成されている。   As shown in FIG. 1, a hood 27 for guiding the cooling air W to the air inlet 21 a is fixed to the outer surface of the first side wall portion 21. The hood 27 is formed in a T-shape in a side view in which the upper part is wide and the middle part and the lower part are narrow in accordance with the width of the intake port 21a formed to the length of almost the entire width of the first side wall part 21. ing.

フード２７の下部には、コンプレッサ（図示せず）などによって作られた冷却風Ｗを吸入する円形の通気口２７ａが形成されている。フード２７の通気口２７ａは、側壁部２３及び側壁部２４に固定された取付部と同じ高さに設けられ、通気口２７ａにダクト（図示せず）を接続しやすくされている。すなわち、ダクトが吸気口２１ａの高い位置に配管するよりも、取付部と同じ高さの低い位置に配管するほうが、レイアウトしやすいものとすることができる。   A circular ventilation hole 27 a for sucking cooling air W produced by a compressor (not shown) or the like is formed in the lower portion of the hood 27. The vent 27a of the hood 27 is provided at the same height as the attachment portions fixed to the side wall 23 and the side wall 24, and a duct (not shown) is easily connected to the vent 27a. In other words, it is easier to lay out the duct if the duct is piped at a position as low as the mounting portion than the duct is piped at a higher position of the intake port 21a.

そして、電池収納ケースは、図２に示すように、第１の側壁部２１及び第２の側壁部２２と同じ幅の仕切板３０を第１の側壁部２１の吸気口２１ａの上側から第２の側壁部２２の方に向けて、かつ、側壁部２２との間に開口部３１を設けるように固定したものとされている。この仕切板３０上には、回路基板３２が搭載され、回路基板３２と電池１とを接続する配線（図示せず）が開口部３１を通される。   As shown in FIG. 2, the battery storage case includes a partition plate 30 having the same width as that of the first side wall 21 and the second side wall 22, and the second side from the upper side of the air inlet 21 a of the first side wall 21. The side wall 22 is fixed so that an opening 31 is provided between the side wall 22 and the side wall 22. A circuit board 32 is mounted on the partition plate 30, and wiring (not shown) for connecting the circuit board 32 and the battery 1 is passed through the opening 31.

この電池収納ケースは、以上のように構成され、電池１が図１及び図２に示すように収納される。各電池１の幅の広い面（以下、「正面」という。）が向き合っている間には、絶縁板（図示せず）が介在している。絶縁板は、両側部において、隣り合っている電池１，１の各正面の側部と当接し、中間部において薄肉に形成され、隣り合っている電池１の正面の中間部と当接せず、正面の中間部との間に隙間が生じるようにされている。   The battery storage case is configured as described above, and the battery 1 is stored as shown in FIGS. An insulating plate (not shown) is interposed between the wide surfaces (hereinafter referred to as “front surfaces”) of the batteries 1 facing each other. The insulating plates are in contact with the front side portions of the adjacent batteries 1 and 1 on both side portions, are thinly formed in the intermediate portion, and are not in contact with the front intermediate portion of the adjacent battery 1. A gap is formed between the front intermediate portion.

このような電池収納ケースは、図２に示すように、蓋体４０によって上側開口部が閉じられ、所定の位置にセットされる。そして、コンプレッサに接続されたダクト（図示せず）をフード２７の通気口２７ａに接続し、電池１の使用時において、冷却風Ｗを側壁部２１の吸気口２１ａから電池収納ケース内に送り込む。   As shown in FIG. 2, such a battery storage case is set at a predetermined position with the upper opening closed by the lid 40. Then, a duct (not shown) connected to the compressor is connected to the vent 27a of the hood 27, and the cooling air W is sent into the battery storage case from the intake 21a of the side wall 21 when the battery 1 is used.

この冷却風Wは、第１の側壁部２１の吸気口２１ａから仕切板３０と電池１の上面との間に流れ込み、そして、電池間の隙間１７に流れ込み、電池１を正面から冷却する。この冷却風Wは、第１の板状部１１と電池１との間に介在する空間１６、および第２の板状部１２に設けられた孔部１３を介して第２の板状部１２と底盤部２５との間に介在する空間１５に流れ込み、電池１を底面からも冷却する。そして、この冷却風Wは、第２の側壁部２２の方へ流れ、排気口２２ａから電池パックの外に排出される。第２の板状部１２と底盤部２５との間に介在する空間１５を冷却風Wの流路の一部として使用することで、大量の冷却風を電池パック内に吸気しても、冷却風を効率良く排気することができるため、電池１の温度を短時間で所望の温度まで下げることができる。   The cooling air W flows from the air inlet 21a of the first side wall portion 21 between the partition plate 30 and the upper surface of the battery 1 and then flows into the gap 17 between the batteries to cool the battery 1 from the front. This cooling air W is supplied to the second plate-like portion 12 through the space 16 interposed between the first plate-like portion 11 and the battery 1 and the hole 13 provided in the second plate-like portion 12. The battery 1 flows into the space 15 interposed between the bottom plate portion 25 and the bottom plate 25 to cool the battery 1 from the bottom surface. The cooling air W flows toward the second side wall 22 and is discharged out of the battery pack through the exhaust port 22a. Even if a large amount of cooling air is sucked into the battery pack by using the space 15 interposed between the second plate-like portion 12 and the bottom plate portion 25 as a part of the flow path of the cooling air W, the cooling is performed. Since the wind can be exhausted efficiently, the temperature of the battery 1 can be lowered to a desired temperature in a short time.

冷却風Ｗは、このように電池１の上面から底部の方に流れるため、仕切板３０と第２の側壁部２２との間に設けられた開口部３１から仕切板３０の上側の回路基板３２の方へ流れることがない。したがって、冷却風Ｗ内に塵埃や油分が含まれている場合であっても、この粉塵や油分が回路基板３２に付着することがなく、絶縁不良を起こすことがないようにされている。   Since the cooling air W thus flows from the top surface of the battery 1 toward the bottom, the circuit board 32 above the partition plate 30 through the opening 31 provided between the partition plate 30 and the second side wall portion 22. It does not flow toward Therefore, even when dust or oil is contained in the cooling air W, the dust or oil does not adhere to the circuit board 32, so that insulation failure does not occur.

また、側壁部２１、２２、２３又は２４の何れかの側壁部の電池１との間に、スペーサー１０と同じ形態のスペーサーを備えてもよい。電池収納ケースのどの面部にスペーサー１０と同じ形態のスペーサーを備えるかは、電池収納ケースに設けられた吸気口および排気口の位置によって適宜決めればよい。   Further, a spacer having the same form as the spacer 10 may be provided between the battery 1 on the side wall portion 21, 22, 23 or 24. Which surface portion of the battery storage case is provided with the spacer having the same form as the spacer 10 may be appropriately determined depending on the positions of the air inlet and the air outlet provided in the battery storage case.

また、スペーサー１０と電池１の間にシート部材を介在させてもよい。例えば、樹脂製のシート部材を介在することで電池１と電池収納ケースとの絶縁性を高めることができ、粘着性の高いシート部材を介在することで電池１の位置をさらに安定させることができる。スペーサーは複数の部材から形成されてもよく、スペーサー１０と電池１との間に介在したシート部材が電池１と当接している限り、このシート部材はスペーサーの一部とみなすことができる。   Further, a sheet member may be interposed between the spacer 10 and the battery 1. For example, the insulation between the battery 1 and the battery storage case can be improved by interposing a resin sheet member, and the position of the battery 1 can be further stabilized by interposing a highly adhesive sheet member. . The spacer may be formed from a plurality of members, and as long as the sheet member interposed between the spacer 10 and the battery 1 is in contact with the battery 1, this sheet member can be regarded as a part of the spacer.

１………電池
１０……スペーサー
１１……第１の板状部
１２……第２の板状部
１３……孔部
１４……支持部
１５……第１の空間
１６……第２の空間
１７……隙間
２１……第１の側壁部
２１ａ…吸気口
２２……第２の側壁部
２２ａ…排気口
２５……底盤部
３０……仕切板
３１……開口部
Ｗ………冷却風 DESCRIPTION OF SYMBOLS 1 ...... Battery 10 ... Spacer 11 ... 1st plate-shaped part 12 ... 2nd plate-shaped part 13 ... Hole 14 ... Supporting part 15 ... 1st space 16 ... 2nd Space 17... Clearance 21... First side wall 21 a .. Intake port 22... Second side wall 22 a ... Exhaust port 25.

Claims (3)

隙間を介して配置された複数の電池と、前記電池を収納する電池収納ケースと、前記電池収納ケースに設けられた冷却媒体を吸気する吸気口および排気する排気口と、前記電池と前記電池収納ケースとの間に備えられたスペーサーとを備えた電池パックにおいて、
前記スペーサーは、前記電池収納ケースに当接する第１の板状部と、前記電池収納ケースとの間に空間を介在して前記電池と当接する第２の板状部と、前記第１の板状部の側縁と前記第２の板状部の側縁とを連結する支持部とを備えており、
少なくとも前記第２の板状部の前記電池間の隙間が接する位置に孔部が設けられ、
前記孔部を介して、前記電池間の隙間と、前記第２の板状部と前記電池収納ケースとの間の空間とが連通していることを特徴とする電池パック。 A plurality of batteries arranged through a gap, a battery storage case for storing the battery, an intake port for exhausting and exhausting a cooling medium provided in the battery storage case, the battery and the battery storage In the battery pack provided with the spacer provided between the case,
The spacer, the a first plate-like portion abutting on the battery housing case, and the second plate-like portion interposed space in contact with the battery between the battery housing case, the first plate A support portion that connects the side edge of the second plate-like portion and the side edge of the second plate-like portion ;
A hole is provided at a position where the gap between the batteries of at least the second plate-shaped portion contacts,
The battery pack, wherein the gap between the batteries communicates with the space between the second plate-like part and the battery storage case through the hole. 隙間を介して配置された複数の電池と、前記電池を収納する電池収納ケースと、前記電池収納ケースに設けられた冷却媒体を吸気する吸気口および排気する排気口と、前記電池と前記電池収納ケースとの間に備えられたスペーサーとを備えた電池パックにおいて、A plurality of batteries arranged through a gap, a battery storage case for storing the battery, an intake port for exhausting and exhausting a cooling medium provided in the battery storage case, the battery and the battery storage In the battery pack provided with the spacer provided between the case,
前記スペーサーは、前記電池収納ケースとの間に空間を介在して前記電池と接する板状部を備えており、前記板状部の前記電池間の隙間が接する位置に孔部が設けられ、前記孔部を介して、前記電池間の隙間と、前記板状部と前記電池収納ケースとの間の空間とが連通し、The spacer includes a plate-like portion that is in contact with the battery with a space between the battery storage case, and a hole is provided at a position where the gap between the batteries contacts the plate-like portion, Via the hole, the gap between the batteries communicates with the space between the plate-like part and the battery storage case,
前記電池収納ケースは、対向する一対の側壁部を備え、前記一対の側壁部のうちの一方の側壁部には、前記電池間の隙間に流れる前記冷却媒体を吸気する前記吸気口が設けられ、前記一対の側壁部のうちの他方の側壁部には、前記電池収納ケースと前記板状部との間の空間に流れる前記冷却媒体を排気する前記排気口が設けられることを特徴とする電池パック。The battery storage case includes a pair of opposing side wall portions, and one of the pair of side wall portions is provided with the intake port for sucking the cooling medium flowing in the gap between the batteries, The battery pack, wherein the other side wall portion of the pair of side wall portions is provided with the exhaust port for exhausting the cooling medium flowing in a space between the battery storage case and the plate-like portion. . 隙間を介して配置された複数の電池と、前記電池を収納する電池収納ケースと、前記電池収納ケースに設けられた冷却媒体を吸気する吸気口および排気する排気口と、前記電池と前記電池収納ケースとの間に備えられたスペーサーとを備えた電池パックにおいて、A plurality of batteries arranged through a gap, a battery storage case for storing the battery, an intake port for exhausting and exhausting a cooling medium provided in the battery storage case, the battery and the battery storage In the battery pack provided with the spacer provided between the case,
前記電池収納ケースの内部を、前記電池を配置する第１の空間と、前記電池を監視する回路基盤を配置する第２の空間とに仕切る仕切板を備え、A partition plate for partitioning the inside of the battery storage case into a first space in which the battery is disposed and a second space in which a circuit board for monitoring the battery is disposed;
前記スペーサーは、前記電池収納ケースとの間に空間を介在して前記電池と接する板状部を備えており、前記板状部の前記電池間の隙間が接する位置に孔部が設けられ、前記孔部を介して、前記電池間の隙間と、前記板状部と前記電池収納ケースとの間の空間とが連通することを特徴とする電池パック。The spacer includes a plate-like portion that is in contact with the battery with a space between the battery storage case, and a hole is provided at a position where the gap between the batteries contacts the plate-like portion, A battery pack, wherein a gap between the batteries and a space between the plate-like part and the battery storage case communicate with each other through a hole.
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