JPWO2018055702A1 - Power storage device - Google Patents
Power storage device Download PDFInfo
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- JPWO2018055702A1 JPWO2018055702A1 JP2018540539A JP2018540539A JPWO2018055702A1 JP WO2018055702 A1 JPWO2018055702 A1 JP WO2018055702A1 JP 2018540539 A JP2018540539 A JP 2018540539A JP 2018540539 A JP2018540539 A JP 2018540539A JP WO2018055702 A1 JPWO2018055702 A1 JP WO2018055702A1
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- Prior art keywords
- secondary battery
- circuit board
- printed circuit
- battery
- monitoring unit
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- 238000012544 monitoring process Methods 0.000 claims abstract description 64
- 238000005259 measurement Methods 0.000 claims abstract description 44
- 239000012212 insulator Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims description 22
- 230000007257 malfunction Effects 0.000 abstract description 23
- 238000007599 discharging Methods 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 4
- 239000011255 nonaqueous electrolyte Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
-
- 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
Abstract
本発明は、外来電磁波ノイズによる集積回路の誤作動を抑制できる蓄電装置を提供する。本発明の蓄電装置は、二次電池と、前記二次電池の充放電を監視する電池監視部と、前記二次電池及び前記電池監視部を収容する筐体とを備え、前記筐体は、前記二次電池を収容する容器と、前記容器上に配置された上蓋とを備え、前記電池監視部は、上面及び下面を有するプリント基板と、前記プリント基板の上面及び下面に実装された複数の電子部品とを備え、前記プリント基板は、絶縁体基板と配線とを含み、かつ、前記二次電池と前記上蓋との間に配置され、複数の電子部品は、前記二次電池の電圧を測定するように設けられた測定用集積回路を含み、前記測定用集積回路は、前記プリント基板の下面に実装され、前記プリント基板は、前記上蓋の主要上面と前記測定用集積回路との間に前記絶縁体基板が位置するように配置されたことを特徴とする。The present invention provides a power storage device that can suppress malfunction of an integrated circuit due to external electromagnetic noise. The power storage device of the present invention includes a secondary battery, a battery monitoring unit that monitors charging / discharging of the secondary battery, and a housing that houses the secondary battery and the battery monitoring unit, A container for accommodating the secondary battery; and an upper lid disposed on the container. The battery monitoring unit includes a printed circuit board having an upper surface and a lower surface; The printed circuit board includes an insulator substrate and wiring, and is disposed between the secondary battery and the upper lid, and the plurality of electronic components measure the voltage of the secondary battery. The measurement integrated circuit is mounted on a lower surface of the printed circuit board, and the printed circuit board is disposed between the main upper surface of the upper lid and the measurement integrated circuit. Arranged so that the insulator substrate is located And wherein the door.
Description
本発明は、蓄電装置に関する。 The present invention relates to a power storage device.
近年、電池は、様々な用途に用いられ、特に大容量の二次電池は、電気自動車用電源や電力貯蔵などの用途に用いられている。
二次電池を単電池で使用すると、機器が必要とする電圧よりも二次電池の電圧が低い場合がある。このような場合、複数の二次電池を直列に接続し供給電圧を所望の電圧まで高くする必要がある。また、単電池では機器が必要とする電気量を十分に供給できない場合がある。このような場合、複数の二次電池を並列に接続し供給電気量を所望の量まで大きくする必要がある。BACKGROUND In recent years, batteries are used in various applications, and in particular, large-capacity secondary batteries are used in applications such as power sources for electric vehicles and power storage.
When the secondary battery is used as a single battery, the voltage of the secondary battery may be lower than the voltage required by the device. In such a case, it is necessary to connect a plurality of secondary batteries in series to raise the supply voltage to a desired voltage. In addition, in some cases, the unit cell can not sufficiently supply the amount of electricity required by the device. In such a case, it is necessary to connect a plurality of secondary batteries in parallel to increase the amount of supplied electricity to a desired amount.
このため、直列又は並列に接続した複数の二次電池を筐体に収容した蓄電装置から機器に電力を供給している。また、複数の二次電池の充放電を監視する電池監視ユニット（BMU）が知られている（例えば、特許文献１、２参照）。BMUは、通常、各電池の電圧などを測定し、充・放電時の過充電、過放電を検出する。また、BMUは、各電池の電圧バランスを維持する機能も有することができる。通常、BMUは、集積回路、抵抗器、キャパシタなどを実装したプリント基板である。
また、プリント基板の配線がアンテナとなり外来電磁波ノイズが生じ、このノイズが集積回路の誤作動を生じさせることが知られている（例えば、特許文献２参照）。Therefore, power is supplied to the device from a power storage device in which a plurality of secondary batteries connected in series or in parallel are accommodated in a housing. Further, a battery monitoring unit (BMU) that monitors charging and discharging of a plurality of secondary batteries is known (see, for example, Patent Documents 1 and 2). The BMU usually measures the voltage of each battery and detects overcharging and overdischarging during charging and discharging. The BMU can also have the function of maintaining the voltage balance of each battery. Usually, the BMU is a printed circuit board on which integrated circuits, resistors, capacitors and the like are mounted.
In addition, it is known that the wiring of the printed circuit board serves as an antenna and external electromagnetic wave noise is generated, and this noise causes a malfunction of the integrated circuit (for example, see Patent Document 2).
外来電磁波ノイズにより集積回路の誤作動が生じると、電池監視部により二次電池の充放電を正常に監視することができず、蓄電装置の安全性の低下、寿命特性の低下などを引き起こすおそれがある。
本発明は、このような事情に鑑みてなされたものであり、外来電磁波ノイズによる集積回路の誤作動を抑制できる蓄電装置を提供する。If the malfunction of the integrated circuit occurs due to the external electromagnetic wave noise, the charge and discharge of the secondary battery can not be normally monitored by the battery monitoring unit, which may cause the safety of the power storage device to deteriorate and the life characteristics to deteriorate. is there.
The present invention has been made in view of such circumstances, and provides a power storage device capable of suppressing malfunction of an integrated circuit due to extraneous electromagnetic noise.
本発明は、二次電池と、前記二次電池の充放電を監視する電池監視部と、前記二次電池及び前記電池監視部を収容する筐体とを備え、前記筐体は、前記二次電池を収容する容器と、前記容器上に配置された上蓋とを備え、前記電池監視部は、上面及び下面を有するプリント基板と、前記プリント基板の上面及び下面に実装された複数の電子部品とを備え、前記プリント基板は、絶縁体基板と配線とを含み、かつ、前記二次電池と前記上蓋との間に配置され、複数の電子部品は、前記二次電池の電圧を測定するように設けられた測定用集積回路を含み、前記測定用集積回路は、前記プリント基板の下面に実装され、前記プリント基板は、前記上蓋の主要上面と前記測定用集積回路との間に前記絶縁体基板が位置するように配置されたことを特徴とする蓄電装置を提供する。 The present invention includes a secondary battery, a battery monitoring unit that monitors charging and discharging of the secondary battery, and a housing that houses the secondary battery and the battery monitoring unit, and the housing is the secondary The battery monitoring unit includes a container for storing a battery, and an upper lid disposed on the container, the battery monitoring unit includes a printed circuit board having an upper surface and a lower surface, and a plurality of electronic components mounted on the upper surface and the lower surface of the printed circuit. And the printed circuit board includes an insulator substrate and a wire, and is disposed between the secondary battery and the upper lid, and a plurality of electronic components measure the voltage of the secondary battery. The measurement integrated circuit is mounted on the lower surface of the printed circuit board, and the printed circuit board is the insulator substrate between the main upper surface of the upper lid and the measurement integrated circuit. Is characterized in that it is arranged to be located To provide a power storage device to be.
本発明の蓄電装置は、二次電池と、二次電池の充放電を監視する電池監視部と、二次電池及び電池監視部を収容する筐体とを備える。このため、二次電池と電池監視部とを筐体内で電気的に接続することができ、蓄電装置を小型化することや部品数を低減することができる。
前記筐体は、二次電池を収容する容器と、容器上に配置された上蓋とを備える。このため、容器内に二次電池を入れた後、容器の電池挿入用開口を上蓋で塞ぐことが可能になり、筐体内に二次電池を収容することが可能になる。The power storage device of the present invention includes a secondary battery, a battery monitoring unit that monitors charge and discharge of the secondary battery, and a housing that houses the secondary battery and the battery monitoring unit. Therefore, the secondary battery and the battery monitoring unit can be electrically connected in the housing, and the power storage device can be miniaturized and the number of parts can be reduced.
The housing includes a container for containing the secondary battery, and an upper lid disposed on the container. Therefore, after the secondary battery is placed in the container, the battery insertion opening of the container can be closed by the upper lid, and the secondary battery can be accommodated in the housing.
前記電池監視部は、上面及び下面を有するプリント基板と、プリント基板の上面及び下面に実装された複数の電子部品とを備える。また、プリント基板は、絶縁体基板と配線とを含む。さらに、複数の電子部品は、二次電池の電圧を測定するように設けられた測定用集積回路を含む。この両面実装プリント基板により、二次電池のセル電圧の測定値に基づき二次電池の充放電を監視することが可能になり、蓄電装置の安全性を向上させることができる。
前記プリント基板は、二次電池と上蓋との間に配置される。このため、容器に二次電池を入れた後、二次電池の上にプリント基板を固設し、その上部を上蓋で覆うことができる。このため、二次電池及びプリント基板を筐体中にコンパクトに収容することが可能になる。また、二次電池と電池監視部との間の配線距離を短くすることができる。
前記測定用集積回路は、プリント基板の下面に実装される。また、プリント基板は、上蓋の主要上面と測定用集積回路との間に絶縁体基板が位置するように配置される。このため、絶縁体基板、プリント基板の上面に実装された電子部品、及びプリント基板の上面の配線により、上蓋の主要上面を通過して測定用集積回路の周辺の配線に達する外来電磁波の強度を弱めることができ、測定用集積回路の周辺の配線がアンテナとなり生じる外来電磁波ノイズを弱めることができる。この結果、測定用集積回路の誤作動を抑制することができる。電池監視部の中心的な役割を果たしている測定用集積回路の誤作動を抑制することにより、電池監視部の誤作動を抑制することができ、蓄電装置の安全性及び寿命特性を向上させることができる。The battery monitoring unit includes a printed circuit board having upper and lower surfaces, and a plurality of electronic components mounted on the upper and lower surfaces of the printed circuit board. Also, the printed circuit board includes an insulator board and a wiring. Further, the plurality of electronic components include a measurement integrated circuit provided to measure the voltage of the secondary battery. With this double-sided printed circuit board, charging / discharging of the secondary battery can be monitored based on the measured value of the cell voltage of the secondary battery, and the safety of the power storage device can be improved.
The printed circuit board is disposed between the secondary battery and the upper lid. For this reason, after putting a secondary battery in a container, a printed circuit board can be fixed on the secondary battery, and the upper part can be covered with an upper lid. Therefore, the secondary battery and the printed circuit board can be compactly accommodated in the housing. Further, the wiring distance between the secondary battery and the battery monitoring unit can be shortened.
The measurement integrated circuit is mounted on the lower surface of the printed circuit board. Also, the printed circuit board is disposed such that the insulator substrate is located between the main upper surface of the upper lid and the measurement integrated circuit. Therefore, with the insulator substrate, the electronic components mounted on the upper surface of the printed circuit board, and the wiring on the upper surface of the printed circuit board, the intensity of extraneous electromagnetic waves passing through the main upper surface of the upper lid and reaching the wiring on the periphery of the measurement integrated circuit It is possible to weaken the extraneous electromagnetic noises that occur because the wiring around the measurement integrated circuit serves as an antenna. As a result, malfunction of the measurement integrated circuit can be suppressed. By suppressing the malfunction of the measurement integrated circuit playing a central role of the battery monitoring unit, it is possible to suppress the malfunction of the battery monitoring unit and improve the safety and life characteristics of the power storage device. it can.
本発明の蓄電装置は、二次電池と、前記二次電池の充放電を監視する電池監視部と、前記二次電池及び前記電池監視部を収容する筐体とを備え、前記筐体は、前記二次電池を収容する容器と、前記容器上に配置された上蓋とを備え、前記電池監視部は、上面及び下面を有するプリント基板と、前記プリント基板の上面及び下面に実装された複数の電子部品とを備え、前記プリント基板は、絶縁体基板と配線とを含み、かつ、前記二次電池と前記上蓋との間に配置され、複数の電子部品は、前記二次電池の電圧を測定するように設けられた測定用集積回路を含み、前記測定用集積回路は、前記プリント基板の下面に実装され、前記プリント基板は、前記上蓋の主要上面と前記測定用集積回路との間に前記絶縁体基板が位置するように配置されたことを特徴とする。 The power storage device of the present invention includes a secondary battery, a battery monitoring unit that monitors charge and discharge of the secondary battery, and a housing that houses the secondary battery and the battery monitoring unit, and the housing is The battery monitoring unit includes a container for containing the secondary battery, and an upper lid disposed on the container, and the battery monitoring unit includes a printed circuit board having an upper surface and a lower surface, and a plurality of printed circuit boards mounted on the upper surface and the lower surface. An electronic component, the printed circuit board includes an insulator substrate and a wire, and is disposed between the secondary battery and the upper lid, and a plurality of electronic components measure a voltage of the secondary battery The measurement integrated circuit is mounted on the lower surface of the printed circuit board, and the printed circuit board is between the main upper surface of the upper lid and the measurement integrated circuit. Insulator substrate is positioned to locate And wherein the door.
前記プリント基板に実装された複数の電子部品には、プリント基板の下面に実装されたマイクロコントローラユニット（ＭＣＵ）が含まれることが好ましい。また、プリント基板は、上蓋の主要上面とＭＣＵとの間に絶縁体基板が位置するように配置されたことが好ましい。このため、ＭＣＵの周辺の配線がアンテナとなり生じる外来電磁波ノイズを弱めることができ、ＭＣＵの誤作動を抑制することができる。電池監視部の中心的な役割を果たしているＭＣＵの誤作動を抑制することにより、電池監視部の誤作動を抑制することができ、蓄電装置の安全性及び寿命特性を向上させることができる。
本発明の蓄電装置は電池監視部を収容する保護ケースを備えることが好ましく、保護ケースはプリント基板と二次電池との間に配置されたことが好ましい。このことにより、二次電池と外部接続端子との間の配線に電流が流れることにより生じる磁界が測定用集積回路又はマイクロコントローラユニットの誤作動を引き起こすことを抑制することができる。The plurality of electronic components mounted on the printed circuit board preferably include a microcontroller unit (MCU) mounted on the lower surface of the printed circuit board. Preferably, the printed circuit board is disposed such that the insulator board is located between the main upper surface of the upper lid and the MCU. Therefore, it is possible to weaken the external electromagnetic wave noise generated by the wiring around the MCU as an antenna, and to suppress the malfunction of the MCU. By suppressing the malfunction of the MCU that plays a central role of the battery monitoring unit, it is possible to suppress the malfunction of the battery monitoring unit and improve the safety and life characteristics of the power storage device.
The power storage device of the present invention preferably includes a protective case that accommodates the battery monitoring unit, and the protective case is preferably disposed between the printed circuit board and the secondary battery. As a result, it is possible to suppress that the magnetic field generated by the current flow in the wiring between the secondary battery and the external connection terminal causes the malfunction of the measuring integrated circuit or the microcontroller unit.
以下、図面を用いて本発明の一実施形態を説明する。図面や以下の記述中で示す構成は、例示であって、本発明の範囲は、図面や以下の記述中で示すものに限定されない。 Hereinafter, an embodiment of the present invention will be described using the drawings. The configurations shown in the drawings and the following description are exemplifications, and the scope of the present invention is not limited to those shown in the drawings and the following description.
図１は本実施形態の蓄電装置の概略斜視図である。図２は、本実施形態の蓄電装置に含まれる中蓋、保護ケース及び電池監視部の概略上面図であり、上蓋を取り外した状態の本実施形態の蓄電装置の概略上面図である。図３は、図１、２の破線Ａ−Ａにおける蓄電装置の概略断面図である。 FIG. 1 is a schematic perspective view of a power storage device of the present embodiment. FIG. 2 is a schematic top view of the inner lid, the protective case, and the battery monitoring unit included in the energy storage device of the present embodiment, and is a schematic top view of the energy storage device of the present embodiment with the upper lid removed. FIG. 3 is a schematic cross-sectional view of the power storage device taken along dashed line A-A in FIGS.
本実施形態の蓄電装置４０は、二次電池２と、二次電池２の充放電を監視する電池監視部３と、二次電池２及び電池監視部３を収容する筐体１とを備え、筐体１は、二次電池２を収容する容器５と、容器５上に配置された上蓋７とを備え、電池監視部３は、上面２８及び下面２９を有するプリント基板１２と、プリント基板１２の上面２８及び下面２９に実装された複数の電子部品１１とを備え、プリント基板１２は、絶縁体基板１３と配線１０とを含み、かつ、二次電池２と上蓋７との間に配置され、複数の電子部品１１は、二次電池２の電圧を測定するように設けられた測定用集積回路８を含み、測定用集積回路８は、プリント基板１２の下面に実装され、プリント基板１２は、上蓋７の主要上面と測定用集積回路８との間に絶縁体基板１３が位置するように配置されたことを特徴とする。また、蓄電装置４０は、保護ケース４を備えることができる。
以下、本実施形態の蓄電装置４０について説明する。A power storage device 40 according to the present embodiment includes a secondary battery 2, a battery monitoring unit 3 that monitors charging and discharging of the secondary battery 2, and a housing 1 that houses the secondary battery 2 and the battery monitoring unit 3. The housing 1 includes a container 5 for containing the secondary battery 2 and an upper lid 7 disposed on the container 5. The battery monitoring unit 3 includes a printed circuit board 12 having an upper surface 28 and a lower surface 29, and a printed circuit board 12. And the printed circuit board 12 includes the insulator substrate 13 and the wiring 10 and is disposed between the secondary battery 2 and the upper lid 7. The plurality of electronic components 11 include a measurement integrated circuit 8 provided to measure the voltage of the secondary battery 2, the measurement integrated circuit 8 is mounted on the lower surface of the printed circuit board 12, and the printed circuit board 12 is , Insulator substrate between the main upper surface of the upper lid 7 and the measuring integrated circuit 8 3, characterized in that is arranged to be positioned. In addition, the power storage device 40 can include the protective case 4.
Hereinafter, power storage device 40 of the present embodiment will be described.
１．蓄電装置
本実施形態の蓄電装置４０は、例えば、自動車の電源、自動二輪車の電源、太陽光発電の蓄電、バックアップ電源などに用いられる蓄電装置である。また、蓄電装置４０は、密閉型蓄電装置又は車載用蓄電装置であってもよい。1. Power Storage Device The power storage device 40 of the present embodiment is, for example, a power storage device used as a power supply of a car, a power supply of a motorcycle, a storage of solar power generation, a backup power supply, and the like. Power storage device 40 may be a sealed power storage device or a vehicle-mounted power storage device.
２．二次電池
蓄電装置４０は、筐体１に収容された少なくとも１つの二次電池２を備える。二次電池２は、筐体１中に収容された密閉型電池であってもよい。筐体１に収容された複数の二次電池２は、並列接続されていてもよく、直列接続されていてもよい。また、複数の二次電池２は、配線により電気的に接続されてもよく、隣接する２つの電池２の電池端子３８を接触又は接合させることにより電気的に接続されてもよい。2. Secondary Battery The power storage device 40 includes at least one secondary battery 2 housed in the housing 1. The secondary battery 2 may be a sealed battery housed in the housing 1. The plurality of secondary batteries 2 housed in the housing 1 may be connected in parallel or in series. In addition, the plurality of secondary batteries 2 may be electrically connected by wiring, or may be electrically connected by bringing the battery terminals 38 of two adjacent batteries 2 into contact or bonding.
二次電池２は、例えば、リチウムイオン電池、ナトリウムイオン電池、ニッケル・水素電池、ニッケル・カドミウム電池等である。また、二次電池２は、角型であってもよく、円筒型であってもよく、パウチ型であってもよい。また、二次電池２は、正極活物質を有する正極２１と、負極活物質を有する負極２２と、正極２１と負極２２とに挟まれたセパレータ２３と、非水電解質２４と、正極２１と負極２２とセパレータ２３と非水電解質２４とを収容する電池容器２５とを備えることができる。また、二次電池２は電池端子３８（プラス端子又はマイナス端子）を有する。 The secondary battery 2 is, for example, a lithium ion battery, a sodium ion battery, a nickel hydrogen battery, a nickel cadmium battery or the like. In addition, the secondary battery 2 may be square, cylindrical or pouch type. In addition, the secondary battery 2 includes a positive electrode 21 having a positive electrode active material, a negative electrode 22 having the negative electrode active material, a separator 23 sandwiched between the positive electrode 21 and the negative electrode 22, a non-aqueous electrolyte 24, a positive electrode 21 and a negative electrode A battery container 25 can be provided which houses the separator 22, the separator 23 and the non-aqueous electrolyte 24. Further, the secondary battery 2 has a battery terminal 38 (plus terminal or minus terminal).
３．筐体
蓄電装置４０は、二次電池２、電池監視部３を収容する筐体１を備える。また、筐体１は密閉構造を有することができる。また、筐体１は、保護ケース４を収容することができる。また、筐体１の材料は、硬質プラスチックなどのプラスチックであってもよい。
筐体１は、少なくとも１つの二次電池２を収容する容器５と、容器５上に配置された中蓋６と、中蓋６上に配置された上蓋７とを備えることができる。これらの筐体１を構成する部材を接着する前に容器５中に少なくとも１つの二次電池２を入れることにより、密閉構造を有する筐体１中に少なくとも１つの二次電池２を収容することができる。3. Housing The power storage device 40 includes the housing 1 accommodating the secondary battery 2 and the battery monitoring unit 3. In addition, the housing 1 can have a sealed structure. In addition, the housing 1 can accommodate the protective case 4. Also, the material of the housing 1 may be a plastic such as a hard plastic.
The housing 1 can include a container 5 for housing at least one secondary battery 2, an inner lid 6 disposed on the container 5, and an upper lid 7 disposed on the inner lid 6. At least one secondary battery 2 is accommodated in the housing 1 having a sealed structure by placing at least one secondary battery 2 in the container 5 before bonding the members constituting the housing 1. Can.
中蓋６は、蓄電装置４０の外部接続端子２７と二次電池２とを電気的に接続する配線１６又は二次電池２と電池監視部３とを電気的に接続する配線１６が設けられた配線盤として機能することができる。
また、中蓋６は、二次電池２の電池端子３８が貫通するスリット３７を有することができ、電池端子３８は、スリット３７を通るように設けることができ、中蓋６の上面に設けられた電池側の配線端子部１８と接合することができる。このことにより、中蓋６に設けられた配線１６と二次電池２とを電気的に接続することができる。
中蓋６は、上蓋７に向かう突起部３３を有することができる。突起部３３により保護ケース４の底部を支えることにより、保護ケース４及び電池監視部３が撓むことを抑制することができる。Inner lid 6 is provided with a wire 16 electrically connecting external connection terminal 27 of power storage device 40 to secondary battery 2 or a wire 16 electrically connecting secondary battery 2 to battery monitoring unit 3. It can function as a wiring board.
In addition, the inner lid 6 may have a slit 37 through which the battery terminal 38 of the secondary battery 2 passes, and the battery terminal 38 may be provided to pass through the slit 37 and provided on the upper surface of the inner lid 6 It can be joined to the wiring terminal portion 18 on the battery side. As a result, the wiring 16 provided on the inner lid 6 and the secondary battery 2 can be electrically connected.
The inner lid 6 can have a projection 33 directed to the upper lid 7. By supporting the bottom of the protective case 4 by the protrusions 33, it is possible to prevent the protective case 4 and the battery monitoring unit 3 from being bent.
筐体１を構成する各部材は、筐体１の内部が密閉空間となるように接着することができる。このことにより、筐体１内に水などが浸入することを防止することができ、蓄電装置４０の安全性及び寿命特性を向上させることができる。筐体１を構成する各部材は、例えば、接着剤により接着することができる。なお、筐体１を構成する２つの部材は、一方の部材に設けられた凸部３６を他方の部材に設けられた凹部に組み合わせ、凸部３６と凹部とを接着することにより接合することができる。
筐体１は、安全弁を備えてもよい。このことにより、二次電池２において発生したガスが筐体１内に放出され筐体１の内部圧力が上昇した場合でも、安全弁からガスを筐体１の外部に放出することができる。Each member which comprises the housing | casing 1 can be adhere | attached so that the inside of the housing | casing 1 may turn into sealed space. As a result, water and the like can be prevented from entering the housing 1, and the safety and life characteristics of the power storage device 40 can be improved. Each member which comprises the housing | casing 1 can be adhere | attached, for example with an adhesive agent. The two members constituting the housing 1 may be joined by combining the convex portion 36 provided on one member with the concave portion provided on the other member, and bonding the convex portion 36 and the concave portion. it can.
The housing 1 may be provided with a safety valve. As a result, even when the gas generated in the secondary battery 2 is released into the housing 1 and the internal pressure of the housing 1 rises, the gas can be released from the safety valve to the outside of the housing 1.
４．電池監視部
電池監視部３は、少なくとも１つの二次電池２の充放電を監視する部分である。電池監視部３は、各電池２のプラス端子及びマイナス端子（電池端子３８）とそれぞれ電気的に接続することができる。例えば、電池監視部３は、端子部材１４、ＢＭＵ側配線端子部１７、配線１６、電池側配線端子部１８を介して電池端子３８と電気的に接続することができる。このことにより、電池監視部３により各電池２の電圧を測定することが可能になる。4. Battery Monitoring Unit The battery monitoring unit 3 is a unit that monitors charging and discharging of at least one secondary battery 2. The battery monitoring unit 3 can be electrically connected to the plus terminal and the minus terminal (battery terminal 38) of each battery 2, respectively. For example, the battery monitoring unit 3 can be electrically connected to the battery terminal 38 through the terminal member 14, the BMU-side wiring terminal unit 17, the wiring 16, and the battery-side wiring terminal unit 18. As a result, the voltage of each battery 2 can be measured by the battery monitoring unit 3.
電池監視部３は、上面２８及び下面２９を有するプリント基板（ＰＣＢ）１２と、プリント基板１２の上面２８及び下面２９に実装された複数の電子部品１１とを備える。プリント基板１２は、両面実装プリント基板であってもよい。プリント基板１２に実装される電子部品１１は、集積回路（ＩＣ）、抵抗器、キャパシタ、ヒューズ３４、リレー、バランサーなどである。電子部品１１は、表面実装、スルーホール実装などによりプリント基板１２に固定することができる。また、プリント基板１２は、絶縁体基板１３上に配線１０を有しており、この配線１０により実装された電子部品１１を電気的に接続し絶縁体基板１３上に電子回路を形成する。また、プリント基板１２は、複数の基板を張り合わせた多層基板、又は層間接続をして導体層を積み上げたビルドアップ基板であってもよい。 The battery monitoring unit 3 includes a printed circuit board (PCB) 12 having an upper surface 28 and a lower surface 29, and a plurality of electronic components 11 mounted on the upper surface 28 and the lower surface 29 of the printed substrate 12. The printed circuit board 12 may be a double-sided printed circuit board. The electronic components 11 mounted on the printed circuit board 12 are an integrated circuit (IC), a resistor, a capacitor, a fuse 34, a relay, a balancer, and the like. The electronic component 11 can be fixed to the printed circuit board 12 by surface mounting, through hole mounting, or the like. The printed circuit board 12 also has a wire 10 on the insulator substrate 13. The electronic component 11 mounted by the wire 10 is electrically connected to form an electronic circuit on the insulator substrate 13. In addition, the printed circuit board 12 may be a multilayer board in which a plurality of boards are laminated, or a buildup board in which interlayer connection is performed and conductor layers are stacked.
プリント基板１２は、二次電池２と上蓋７との間に配置される。このため、容器５中に二次電池２を入れた後、二次電池２の上にプリント基板１２を固設し、その上部を上蓋７で覆うことができる。このため、二次電池２及びプリント基板１２を筐体１中にコンパクトに収容することが可能になる。また、二次電池２と電池監視部３との間の配線距離を短くすることができる。また、プリント基板１２は、上面２８が上蓋７側となり下面２９が二次電池２側となるように配置することができる。また、プリント基板１２は、上蓋７の主要上面と実質的に平行になるように配置することができる。 The printed circuit board 12 is disposed between the secondary battery 2 and the upper lid 7. Therefore, after placing the secondary battery 2 in the container 5, the printed circuit board 12 can be fixed on the secondary battery 2, and the upper part can be covered with the upper lid 7. Thus, the secondary battery 2 and the printed circuit board 12 can be compactly accommodated in the housing 1. In addition, the wiring distance between the secondary battery 2 and the battery monitoring unit 3 can be shortened. The printed circuit board 12 can be arranged such that the upper surface 28 is on the upper lid 7 side and the lower surface 29 is on the secondary battery 2 side. Also, the printed circuit board 12 can be arranged to be substantially parallel to the main upper surface of the upper lid 7.
プリント基板１２に実装される複数の電子部品１１は、二次電池２の電圧を測定するように設けられた測定用集積回路８を含む。このことにより、二次電池２の電圧の測定値に基づき二次電池２の充放電を監視することが可能になり、蓄電装置４０の安全性を向上させることができる。測定用集積回路８は、二次電池２の電圧を測定し電圧値のデータを出力するように設けることができる。また、測定用集積回路８は、容器５に収容された各二次電池２の電圧を測定するように設けることができる。また、測定用集積回路８は、後述するマイクロコントローラユニット（ＭＣＵ）９の機能を有する集積回路であってもよい。また、プリント基板１２は、複数の測定用集積回路８が実装されてもよい。 The plurality of electronic components 11 mounted on the printed circuit board 12 include a measurement integrated circuit 8 provided to measure the voltage of the secondary battery 2. This makes it possible to monitor charge / discharge of the secondary battery 2 based on the measured value of the voltage of the secondary battery 2, and to improve the safety of the power storage device 40. The measurement integrated circuit 8 can be provided to measure the voltage of the secondary battery 2 and output data of the voltage value. The measuring integrated circuit 8 can be provided to measure the voltage of each of the secondary batteries 2 accommodated in the container 5. The measurement integrated circuit 8 may be an integrated circuit having the function of a microcontroller unit (MCU) 9 described later. Further, the printed circuit board 12 may have a plurality of measuring integrated circuits 8 mounted thereon.
測定用集積回路８は、第１及び第２入力端子を有することができ、第１入力端子が二次電池２のプラス端子と電気的に接続することができ、第２入力端子が二次電池２のマイナス端子と電気的に接続することができる。このことにより、この二次電池２のセル電圧が測定用集積回路８に印加される。なお、測定用集積回路８と二次電池２との間にノイズフィルタを設けてもよい。
測定用集積回路８は、第１及び第２入力端子間の電圧を測定し、セル電圧の測定値（セル電圧値）を得るように設けることができる。また、測定用集積回路８は、出力端子からセル電圧値のデータを出力するように設けることができる。このような測定用集積回路８を設けることにより、二次電池２のセル電圧値をデータとして出力することができる。The measurement integrated circuit 8 can have first and second input terminals, the first input terminal can be electrically connected to the positive terminal of the secondary battery 2, and the second input terminal can be a secondary battery. It can be electrically connected to the 2 negative terminal. As a result, the cell voltage of the secondary battery 2 is applied to the measuring integrated circuit 8. A noise filter may be provided between the measurement integrated circuit 8 and the secondary battery 2.
The measurement integrated circuit 8 can be provided to measure the voltage between the first and second input terminals and obtain a measured value of the cell voltage (cell voltage value). Further, the measurement integrated circuit 8 can be provided so as to output data of the cell voltage value from the output terminal. By providing such a measurement integrated circuit 8, the cell voltage value of the secondary battery 2 can be output as data.
電池監視部３は、プリント基板１２に実装されたマイクロコントローラユニット（ＭＣＵ）９を備えることができる。ＭＣＵ９は、ＣＰＵコア、メモリ、入出力回路を含むことができる。測定用集積回路８、ＭＣＵ９及びプリント基板１２は、測定用集積回路８が出力したセル電圧値のデータがＭＣＵ９に入力されるように設けることができ、また、容器５に収容された各二次電池２のセル電圧値のデータがＭＣＵ９に入力されるように設けることができる。なお、ここでは、測定用集積回路８、ＭＣＵ９を別々の集積回路として説明しているが、これらの機能が１つの測定用集積回路８に集積されていてもよい。
ＭＣＵ９は、入力されたセル電圧値とメモリに記憶されていた電圧値とを比較するように設けることができる。また、ＭＣＵ９は、入力されたセル電圧値をメモリに記憶することができる。このことにより、ＭＣＵ９は、過充電、過放電、各二次電圧２のセル電圧のアンバランスなどを検出することができる。The battery monitoring unit 3 can include a microcontroller unit (MCU) 9 mounted on the printed circuit board 12. The MCU 9 can include a CPU core, a memory, and an input / output circuit. The measurement integrated circuit 8, the MCU 9, and the printed circuit board 12 can be provided so that data of cell voltage values output from the measurement integrated circuit 8 can be input to the MCU 9, and each secondary housed in the container 5 The data of the cell voltage value of the battery 2 can be provided to be input to the MCU 9. Here, the measurement integrated circuit 8 and the MCU 9 are described as separate integrated circuits, but these functions may be integrated into one measurement integrated circuit 8.
The MCU 9 can be provided to compare the input cell voltage value with the voltage value stored in the memory. Further, the MCU 9 can store the input cell voltage value in the memory. As a result, the MCU 9 can detect overcharging, overdischarging, unbalance of the cell voltages of the secondary voltages 2 and the like.
電池監視部３は、ヒューズ３４又はリレーを有することができる。ヒューズ３４又はリレーは、二次電池２と外部接続端子２７との電気的接続を切断できるように設けられる。
ＭＣＵ９は、二次電池２の過充電を検出した場合に、二次電池２と外部接続端子２７との電気的接続を切断する信号をヒューズ３４又はリレーに出力することができる。このことにより、二次電池２の過充電が生じた場合に充電を中断させることができ、二次電池２が発熱することを防止することができる。The battery monitoring unit 3 can have a fuse 34 or a relay. The fuse 34 or the relay is provided so as to break the electrical connection between the secondary battery 2 and the external connection terminal 27.
When the MCU 9 detects overcharging of the secondary battery 2, the MCU 9 can output a signal for disconnecting the electrical connection between the secondary battery 2 and the external connection terminal 27 to the fuse 34 or the relay. By this, when overcharge of the secondary battery 2 arises, charge can be interrupted and it can prevent that the secondary battery 2 generates heat.
電池監視部３は、バランサーを有することができる。バランサーは、容器５に収容された各二次電池２のセル電圧を調整できるように設けられる。
ＭＣＵ９は、各二次電圧２のセル電圧のアンバランスを検出した場合に、各二次電圧２のセル電圧のバランスがよくなるようにセル電圧を調整する信号をバランサーに出力することができる。
以上のように電池監視部３は、容器５に収容された二次電池２の充放電を監視することができる。また、二次電池２の充放電の監視には、測定用集積回路８とＭＣＵ９が中心的な役割を果たしている。従って、測定用集積回路８又はＭＣＵ９に誤作動が生じると、蓄電装置４０の安全性、寿命特性などが低下する。The battery monitoring unit 3 can have a balancer. The balancer is provided to adjust the cell voltage of each of the secondary batteries 2 housed in the container 5.
The MCU 9 can output a signal for adjusting the cell voltage to the balancer so as to improve the balance of the cell voltage of each secondary voltage 2 when detecting the unbalance of the cell voltage of each secondary voltage 2.
As described above, the battery monitoring unit 3 can monitor charging / discharging of the secondary battery 2 housed in the container 5. The measurement integrated circuit 8 and the MCU 9 play a central role in monitoring the charge and discharge of the secondary battery 2. Therefore, if the measurement integrated circuit 8 or the MCU 9 malfunctions, the safety, life characteristics, and the like of the power storage device 40 deteriorate.
一方、放送電波、通信電波などとして電波が利用されている。また、様々な機器やケーブルが電磁波を発している。プリント基板１２の配線パターンがアンテナとなりこれらの外来電磁波を受信し、外来電磁波ノイズが発生する場合がある。この外来電磁波ノイズにより電池監視部３が誤作動する場合がある。なお、外来電磁波とは、蓄電装置４０の外部で発生した電磁波が空間を伝達し蓄電装置４０に到達する電磁波をいう。 On the other hand, radio waves are used as broadcast radio waves and communication radio waves. In addition, various devices and cables emit electromagnetic waves. The wiring pattern of the printed circuit board 12 serves as an antenna, and these external electromagnetic waves may be received to generate external electromagnetic wave noise. The battery monitoring unit 3 may malfunction due to the extraneous electromagnetic noise. The external electromagnetic wave refers to an electromagnetic wave generated by the electromagnetic wave generated outside the power storage device 40 transmitting in space and reaching the power storage device 40.
測定用集積回路８は、プリント基板１２の下面に実装される。また、プリント基板１２は、上蓋７の主要上面と測定用集積回路８との間に絶縁体基板１３が位置するように配置される。このため、絶縁体基板１３、プリント基板１２の上面に実装された電子部品１１、及びプリント基板１２の上面の配線１０により、上蓋７の主要上面を通過して測定用集積回路８の周辺の配線１０に達する外来電磁波の強度を弱めることができ、測定用集積回路８の周辺の配線１０がアンテナとなり生じる外来電磁波ノイズを弱めることができる。この結果、測定用集積回路８の誤作動を抑制することができる。電池監視部３の中心的な役割を果たしている測定用集積回路８の誤作動を抑制することにより、電池監視部８の誤作動を抑制することができ、蓄電装置４０の安全性及び寿命特性を向上させることができる。なお、プリント基板１２の上面には、他の電子部品１１を実装することができる。また、電池監視部８に含まれるすべての測定用集積回路８がプリント基板１２の下面２９に実装されてもよい。 The measurement integrated circuit 8 is mounted on the lower surface of the printed circuit board 12. Further, the printed circuit board 12 is disposed such that the insulator substrate 13 is positioned between the main upper surface of the upper lid 7 and the measurement integrated circuit 8. For this reason, the insulator substrate 13, the electronic component 11 mounted on the upper surface of the printed circuit board 12, and the wiring 10 on the upper surface of the printed circuit board 12 pass the main upper surface of the upper lid 7 and wire around the measurement integrated circuit 8 The intensity of the external electromagnetic wave reaching 10 can be reduced, and the external electromagnetic wave noise generated by the wiring 10 around the measurement integrated circuit 8 serving as an antenna can be reduced. As a result, malfunction of the measuring integrated circuit 8 can be suppressed. By suppressing the malfunction of the measurement integrated circuit 8 playing the central role of the battery monitoring unit 3, the malfunction of the battery monitoring unit 8 can be suppressed, and the safety and life characteristics of the power storage device 40 can be improved. It can be improved. Another electronic component 11 can be mounted on the upper surface of the printed board 12. In addition, all measurement integrated circuits 8 included in the battery monitoring unit 8 may be mounted on the lower surface 29 of the printed circuit board 12.
プリント基板１２は、下面２９にＭＣＵ９を実装することができる。また、プリント基板１２は、上蓋７の主要上面とＭＣＵ９との間に絶縁体基板１３が位置するように配置することができる。このため、ＭＣＵ９の周辺の配線１０に達する外来電磁波の強度を弱めることができ、ＭＣＵ９の周辺の配線１０がアンテナとなり生じる外来電磁波ノイズを弱めることができる。この結果、ＭＣＵ９の誤作動を抑制することができる。電池監視部３の中心的な役割を果たしているＭＣＵ９の誤作動を抑制することにより、電池監視部８の誤作動を抑制することができ、蓄電装置４０の安全性及び寿命特性を向上させることができる。 The printed circuit board 12 can mount the MCU 9 on the lower surface 29. Further, the printed circuit board 12 can be arranged such that the insulator substrate 13 is positioned between the main upper surface of the upper lid 7 and the MCU 9. Therefore, the intensity of the external electromagnetic wave reaching the wiring 10 around the MCU 9 can be reduced, and the external electromagnetic wave noise generated by the wiring 10 around the MCU 9 as an antenna can be reduced. As a result, malfunction of the MCU 9 can be suppressed. By suppressing the malfunction of the MCU 9 playing the central role of the battery monitoring unit 3, the malfunction of the battery monitoring unit 8 can be suppressed, and the safety and life characteristics of the power storage device 40 can be improved. it can.
５．保護ケース
保護ケース４は、電池監視部３を収容するケースであり、筐体１に収容される。この保護ケース４を設けることにより、筐体１内の電池２を収容するスペースと電池監視部３を収容するスペースとを分離することができる。この構成により、電池２の液漏れが生じた場合でも、漏れ出た電解液が電池監視部３を収容した保護ケース４内に浸入することを抑制することができ、電池監視部３が損傷することを抑制することができる。このため、蓄電装置４０の安全性を向上させることができる。保護ケース４の材料は、例えば、硬質プラスチックである。
保護ケース４は、内部が密閉空間となるように設けることができる。このことにより、電池２の液漏れが生じた場合でも、漏れ出た電解液が電池監視部３を収容した保護ケース４内に浸入することを防止することができる。
蓄電装置４０は、保護ケース４と上蓋７とで挟持されたシール部材１９を備えることができる。このシール部材１９により、保護ケース４の内部を密封することができ、保護ケース４の内部を密閉空間とすることができる。5. Protective Case The protective case 4 is a case that accommodates the battery monitoring unit 3 and is accommodated in the housing 1. By providing the protective case 4, the space for housing the battery 2 in the housing 1 can be separated from the space for housing the battery monitoring unit 3. With this configuration, even when the battery 2 leaks, the leaked electrolyte can be prevented from infiltrating into the protective case 4 containing the battery monitoring unit 3 and the battery monitoring unit 3 is damaged. Can be suppressed. Therefore, the safety of power storage device 40 can be improved. The material of the protective case 4 is, for example, hard plastic.
The protective case 4 can be provided such that the inside is a sealed space. As a result, even when the battery 2 leaks, the leaked electrolyte can be prevented from infiltrating into the protective case 4 in which the battery monitoring unit 3 is housed.
The power storage device 40 can include a seal member 19 sandwiched between the protective case 4 and the upper lid 7. The sealing member 19 can seal the inside of the protective case 4 and can make the inside of the protective case 4 a sealed space.
保護ケース４はプリント基板１２と二次電池２との間に配置することができる。このことにより、二次電池２と外部接続端子２７とを接続する配線と、測定用集積回路８又はＭＣＵ９との間に保護ケース４を配置することができ、前記配線に電流が流れることにより生じる磁界がプリント基板１２に影響を与えることを抑制することができる。このため、前記配線に電流が流れることにより生じる磁界が測定用集積回路８又はＭＣＵ９の誤作動を引き起こすことを抑制することができる。 The protective case 4 can be disposed between the printed circuit board 12 and the secondary battery 2. As a result, the protective case 4 can be disposed between the wiring connecting the secondary battery 2 and the external connection terminal 27 and the measurement integrated circuit 8 or MCU 9, which is caused by the flow of current through the wiring. The influence of the magnetic field on the printed circuit board 12 can be suppressed. Therefore, it is possible to suppress that the magnetic field generated by the flow of the current through the wiring causes the malfunction of the measurement integrated circuit 8 or the MCU 9.
実験
測定用集積回路８をプリント基板の下面に実装した電子回路基板を備えた蓄電装置Ａと、測定用集積回路８をプリント基板の上面に実装した電子回路基板を備えた蓄電装置Ｂとを作製した。その他の構成は、図１〜３に示した蓄電装置と同様に作製した。
携帯電話の電波が外来電磁波ノイズを生じさせることを模擬した試験を行った。具体的には、８００ＭＨｚ帯（７１０−９６０ＭＨｚ）と２ＧＨｚ帯（１９２０−２２００ＭＨｚ）の電波を上側から蓄電装置Ａ、Ｂに到達させ、電池監視部３が誤作動を起こすか否かを調べた。
その結果、蓄電装置Ａでは、電池監視部の誤作動を抑制することができたが、蓄電装置Ｂでは、電池監視部が誤作動を起こした。
この結果から、測定用集積回路８をプリント基板の下面に実装することにより電池監視部の誤作動を抑制できることがわかった。A storage device A provided with an electronic circuit board having the test measurement integrated circuit 8 mounted on the lower surface of the printed circuit board, and a power storage device B provided with an electronic circuit board having the measurement integrated circuit 8 mounted on the upper surface of the printed circuit board did. The other configuration is the same as that of the power storage device shown in FIGS.
A test was conducted to simulate that radio waves from a mobile phone cause extraneous electromagnetic noise. Specifically, radio waves in the 800 MHz band (710-960 MHz) and 2 GHz band (1920-2200 MHz) were allowed to reach the storage devices A and B from the upper side, and it was examined whether the battery monitoring unit 3 caused a malfunction.
As a result, in the power storage device A, the malfunction of the battery monitoring unit could be suppressed, but in the power storage device B, the battery monitoring portion malfunctioned.
From this result, it was found that mounting the measurement integrated circuit 8 on the lower surface of the printed circuit board can suppress the malfunction of the battery monitoring unit.
１：筐体 ２、２ａ、２ｂ：二次電池 ３：電池監視部 ４：保護ケース ５：容器 ６：中蓋 ７：上蓋 ８：測定用集積回路 ９：マイクロコントローラユニット（ＭＣＵ） １０：配線 １１、１１ａ〜１１ｏ：電子部品 １２：プリント基板 １３：絶縁体基板 １４、１４ａ〜１４ｆ：ＢＭＵ接続用端子部材 １５：隔壁 １６：配線 １７、１７ａ〜１７ｆ：配線端子部（ＢＭＵ側） １８、１８ａ、１８ｂ：配線端子部（電池側） １９：シール部材 ２１：正極 ２２：負極 ２３：セパレータ ２４：非水電解質 ２５：電池容器 ２７、２７ａ、２７ｂ：外部接続端子 ２８：上面 ２９：下面 ３１、３１ａ〜３１ｉ：ボルト ３２：ナット ３３：突起部 ３４：ヒューズ ３６：接合用凸部 ３７、３７ａ、３７ｂ：スリット ３８、３８ａ、３８ｂ：電池端子 ４０：蓄電装置 1: Case 2, 2a, 2b: Secondary battery 3: Battery monitoring part 4: Protective case 5: Container 6: Medium lid 7: Upper lid 8: Integrated circuit for measurement 9: Microcontroller unit (MCU) 10: Wiring 11 , 11a to 11o: electronic components 12: printed circuit boards 13: insulator substrates 14, 14a to 14f: terminal members for BMU connection 15: partition walls 16: wiring 17, 17a to 17f: wiring terminal portion (BMU side) 18, 18a, 18b: Wiring terminal portion (battery side) 19: Sealing member 21: Positive electrode 22: Negative electrode 23: Separator 24: Non-aqueous electrolyte 25: Battery container 27, 27a, 27b: External connection terminal 28: Upper surface 29: Lower surface 31, 31a ~ 31i: bolt 32: nut 33: projection 34: fuse 36: projection for joining 37, 37a, 37b: Slits 38, 38a, 38b: Battery terminals 40: Power storage device
Claims (3)
前記筐体は、前記二次電池を収容する容器と、前記容器上に配置された上蓋とを備え、
前記電池監視部は、上面及び下面を有するプリント基板と、前記プリント基板の上面及び下面に実装された複数の電子部品とを備え、
前記プリント基板は、絶縁体基板と配線とを含み、かつ、前記二次電池と前記上蓋との間に配置され、
複数の電子部品は、前記二次電池の電圧を測定するように設けられた測定用集積回路を含み、
前記測定用集積回路は、前記プリント基板の下面に実装され、
前記プリント基板は、前記上蓋の主要上面と前記測定用集積回路との間に前記絶縁体基板が位置するように配置されたことを特徴とする蓄電装置。A secondary battery, a battery monitoring unit that monitors charge and discharge of the secondary battery, and a case that houses the secondary battery and the battery monitoring unit,
The housing includes a container for containing the secondary battery, and an upper lid disposed on the container.
The battery monitoring unit includes a printed circuit board having an upper surface and a lower surface, and a plurality of electronic components mounted on the upper surface and the lower surface of the printed circuit board.
The printed circuit board includes an insulator substrate and a wire, and is disposed between the secondary battery and the upper lid.
The plurality of electronic components include a measurement integrated circuit provided to measure the voltage of the secondary battery,
The measurement integrated circuit is mounted on the lower surface of the printed circuit board.
The electric storage device characterized in that the printed circuit board is disposed such that the insulator substrate is positioned between a main upper surface of the upper lid and the measurement integrated circuit.
前記プリント基板は、前記上蓋の主要上面と前記マイクロコントローラユニットとの間に前記絶縁体基板が位置するように配置された請求項１に記載の蓄電装置。The plurality of electronic components include a microcontroller unit mounted on the lower surface of the printed circuit board,
The power storage device according to claim 1, wherein the printed circuit board is disposed such that the insulator substrate is positioned between a main upper surface of the upper lid and the microcontroller unit.
前記保護ケースは、前記プリント基板と前記二次電池との間に配置された請求項１又は２に記載の蓄電装置。The battery monitoring apparatus further comprises a protective case for housing the battery monitoring unit,
The power storage device according to claim 1, wherein the protective case is disposed between the printed circuit board and the secondary battery.
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