JP7482160B2 - Pole assemblies, battery cells and electrical equipment - Google Patents
Pole assemblies, battery cells and electrical equipment Download PDFInfo
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- 230000000712 assembly Effects 0.000 title description 4
- 238000000429 assembly Methods 0.000 title description 4
- -1 polyethylene Polymers 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 15
- 238000003466 welding Methods 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Description
本発明の実施形態は、電池技術分野に関し、特に、極柱アセンブリ、電池セル、及び電気設備に関する。 Embodiments of the present invention relate to the field of battery technology, and in particular to pole assemblies, battery cells, and electrical equipment.
電池セルは、外部のエネルギーを電気エネルギーに変換してその内部に蓄え、携帯電子機器等の外部機器に必要なタイミングで給電する装置である。現在、バッテリーは、携帯電話、タブレット、ノートパソコン等の電子製品に広く用いられている。 A battery cell is a device that converts external energy into electrical energy, stores it internally, and supplies power to external devices such as portable electronic devices when needed. Currently, batteries are widely used in electronic products such as mobile phones, tablets, and laptops.
電池セルは、高温条件又は短絡発生中に熱が絶えず発生し、電池セル内部の熱が絶えず蓄積され、さらに熱暴走して内部で高温高圧のガスが発生する可能性があり、このようなガスを即座に排出しないと、膨れにより爆発等の安全事故を引き起こす可能性がある。そこで、現時点では、電池セルの温度が所定の温度よりも高くなる時に、前記ガスを排出できるような電池セルを提供し、電池セルの安全性能を完備させる必要があった。 Battery cells constantly generate heat under high temperature conditions or when a short circuit occurs, and heat inside the battery cell constantly accumulates, which can lead to thermal runaway and the generation of high-temperature, high-pressure gas inside. If this gas is not immediately released, it may swell and cause a safety accident such as an explosion. Therefore, at present, there is a need to provide a battery cell that can release the gas when the temperature of the battery cell rises above a specified temperature, thereby completing the safety performance of the battery cell.
本発明の実施形態は、現在の電池セルが特定の温度を超える温度で内部ガスを速やかに排出できない現状を改善するために、極柱アセンブリ、電池セル、および電気設備を提供することを目的とする。 Embodiments of the present invention aim to provide a pole assembly, a battery cell, and electrical equipment to improve on the current situation where current battery cells are unable to quickly vent internal gases at temperatures above a certain temperature.
本願の実施形態は、上記の技術課題を解決するために、以下の手段を講じた。 In order to solve the above technical problems, the embodiment of the present application takes the following measures.
電池セルに適用される極柱アセンブリであって、極柱と、熱変形部材と、固定具と、を備える。そのうち、熱変形部材は、前記極柱を取り囲むように設けられ極柱を取り囲むように設けられ、且つ前記極柱と固定されている。固定具は、貫通孔を有し、前記貫通孔を介して前記熱変形部材を取り囲むように設けられ、且つ前記熱変形部材と固定される。前記熱変形部材は、温度が所定の閾値よりも高い場合に、前記貫通孔内に、前記貫通孔の両端にそれぞれ連通する圧力逃がし通路が形成されるように、変形する。 A pole assembly for use in a battery cell, comprising a pole, a thermal deformation member, and a fixing device. The thermal deformation member is provided to surround the pole and is fixed to the pole. The fixing device has a through hole, is provided to surround the thermal deformation member via the through hole, and is fixed to the thermal deformation member. When the temperature is higher than a predetermined threshold, the thermal deformation member deforms so that pressure relief passages are formed in the through hole that communicate with both ends of the through hole.
上記態様の更なる改良態様として、前記熱変形部材は、絶縁材であり、前記固定具は、前記貫通孔の軸方向に沿って、前記熱変形部材の両端の間に位置する。 As a further improvement to the above embodiment, the thermal deformation member is an insulating material, and the fixing device is located between both ends of the thermal deformation member along the axial direction of the through hole.
上記態様の更なる改良態様として、前記固定具は、前記貫通孔の軸方向に垂直な断面が非円形状をなす。 As a further improvement to the above embodiment, the fixing device has a non-circular cross section perpendicular to the axial direction of the through hole.
上記態様の更なる改良態様として、前記極柱の軸方向に沿って、前記極柱の第1端が前記熱変形部材と前記固定具からはみ出している。 As a further improvement to the above embodiment, the first end of the pole extends beyond the thermal deformation member and the fixing device along the axial direction of the pole.
上記態様の更なる改良態様として、前記第1端に固定された導電端子をさらに備え、前記導電端子の前記極柱に面する端面は、前記極柱の端面よりも大きく、且つ前記極柱を完全に覆う。 As a further improvement to the above embodiment, a conductive terminal is further provided that is fixed to the first end, and the end face of the conductive terminal that faces the pole is larger than the end face of the pole and completely covers the pole.
上記態様の更なる改良態様として、前記端面は、角丸矩形又は矩形を呈し、前記端面の幅と前記固定具の端面の最大リニア寸法との差が4mm未満とされている。 As a further improvement to the above embodiment, the end face is rectangular or rounded, and the difference between the width of the end face and the maximum linear dimension of the end face of the fixture is less than 4 mm.
上記態様の更なる改良態様として、前記極柱が金属を含むこと、及び/又は、前記熱変形部材がポリエチレン、ポリプロピレン、若しくはポリプロピレンエチレンを含むこと、及び/又は、前記固定具が金属を含むことが挙げられる。 Further improvements to the above embodiment include that the pole includes a metal, and/or that the thermally deformable member includes polyethylene, polypropylene, or polypropylene ethylene, and/or that the fastener includes a metal.
上記態様の更なる改良形態として、前記熱変形部材は、温度が所定の閾値よりも高い場合に、前記貫通孔内に前記圧力逃がし通路が形成されるように、溶融または収縮する。 As a further improvement to the above embodiment, the thermal deformation member melts or shrinks when the temperature is higher than a predetermined threshold so that the pressure relief passage is formed within the through hole.
本願他の実施形態は、さらに、ケースと電極アセンブリとを含む電池セルを提供し、前記ケースには、前記電極アセンブリを収容する収容キャビティを有するとともに、前記収容キャビティ及び前記電池セルの外界環境にそれぞれ連通する開口が設けられている。前記電池セルは、上記のいずれかの極柱アセンブリをさらに備える。前記固定具が前記開口に取り付けられ、前記極柱の第1端が前記外界環境に露呈し、前記極柱の第2端が前記電極アセンブリと電気的に接続されている。 Another embodiment of the present application further provides a battery cell including a case and an electrode assembly, the case having a housing cavity for housing the electrode assembly and an opening communicating with the housing cavity and the external environment of the battery cell, respectively. The battery cell further includes any one of the pole assemblies described above. The fixture is attached to the opening, a first end of the pole is exposed to the external environment, and a second end of the pole is electrically connected to the electrode assembly.
上記態様の更なる改良態様として、前記開口の形状は、前記固定具の形状に適合するように構成される。 As a further improvement to the above embodiment, the shape of the opening is configured to match the shape of the fastener.
本願のさらに他の実施形態に係る電池セルは、ケースと電極アセンブリとを含み、前記ケースには、前記電極アセンブリを収容する収容キャビティを有するとともに、前記収容キャビティ及び前記電池セルの外界環境とそれぞれ連通する開口が設けられている。前記電池セルは、極柱アセンブリをさらに備える。前記極柱アセンブリは、前記開口に取り付けられ、且つ極柱及び熱変形部材を含む。前記極柱の第1端が前記外界環境に露呈し、前記極柱の第2端が前記電極アセンブリと電気的に接続されている。前記熱変形部材は、前記極柱を取り囲むように設けられ極柱を取り囲むように設けられ、且つ前記極柱と前記開口の内壁との間に位置している。 A battery cell according to yet another embodiment of the present application includes a case and an electrode assembly, and the case has a housing cavity for housing the electrode assembly and an opening communicating with the housing cavity and the external environment of the battery cell, respectively. The battery cell further includes a pole assembly. The pole assembly is attached to the opening and includes a pole and a thermal deformation member. A first end of the pole is exposed to the external environment, and a second end of the pole is electrically connected to the electrode assembly. The thermal deformation member is provided to surround the pole and is located between the pole and the inner wall of the opening.
本願の他の実施形態は、さらに、上記のいずれかの極柱アセンブリ、または、上記のいずれかの電池セルを備える電気設備を提供する。 Another embodiment of the present application further provides an electrical device including any of the pole assemblies described above or any of the battery cells described above.
本願の有益な効果は、次の通りである。本願実施形態によって提供される極柱アセンブリは、極柱と、熱変形部材と、固定具とを備える電池セルに適用される。ここで、熱変形部材は、極柱を取り囲むように設けられ極柱を取り囲むように設けられ、且つ極柱と固定される。固定具には、貫通孔が設けられ、固定具は、貫通孔によって上記熱変形部材に被せられ、且つ当該熱変形部材と固定される。熱変形部材は、温度が所定の閾値よりも高い場合に、貫通孔内に、貫通孔の両端にそれぞれ連通する圧力逃がし通路を形成するように、変形するように構成される。 The beneficial effects of the present application are as follows: The pole assembly provided by the present embodiment is applied to a battery cell including a pole, a thermal deformation member, and a fixing device. Here, the thermal deformation member is provided so as to surround the pole, and is fixed to the pole. A through hole is provided in the fixing device, and the fixing device is placed over the thermal deformation member by the through hole and is fixed to the thermal deformation member. The thermal deformation member is configured to deform so as to form a pressure relief passage in the through hole that is connected to both ends of the through hole when the temperature is higher than a predetermined threshold value.
現在市販されている電池セルと比較して、本願実施形態による極柱アセンブリは、電池セルに適用される時に、その内部の熱変形部材が電池セルの温度が所定の閾値を上回った場合に変形し、さらに、固定具の貫通孔内に圧力逃がし通路が形成されることにより、電池セル内の気体を外部に排出することができ、電池セルの爆発の安全リスクを低減することができる。即ち、本願実施形態によって提供される極柱アセンブリは、現在の電池セルは温度が特定の温度より高い場合に、内部ガスを速やかに排出できない現状を改善することができる。 Compared to battery cells currently available on the market, when the pole assembly according to the embodiment of the present application is applied to a battery cell, the internal thermal deformation member deforms when the temperature of the battery cell exceeds a certain threshold, and further, a pressure relief passage is formed in the through hole of the fastener, allowing the gas in the battery cell to be discharged to the outside, thereby reducing the safety risk of the battery cell exploding. In other words, the pole assembly provided by the embodiment of the present application can improve the current situation in which current battery cells are unable to quickly discharge internal gas when the temperature is higher than a certain temperature.
1つ又は複数の実施形態はそれに対応する図面によって例示的に説明されたものであり、これらの例示的な説明は実施形態を限定するものではない。図面中の同一符号を付した要素は、類似の要素を示す。特に明記しない限り、図面中の図面は比例制限を受けない。 One or more embodiments are illustrated by way of example only and not by way of limitation in the accompanying drawings. Elements in the drawings that are labeled with the same reference numerals refer to similar elements. Unless otherwise specified, the drawings in the drawings are not to scale.
以下、本願の理解を容易にするため、添付図面及び具体的な実施形態を組み合わせて、本願をより詳細に説明する。なお、ある部品が他の部品に「固定された」/「固着された」/「装着された」と表現される場合には、それらが他の部品に直接存在してもよく、あるいはその間に1つまたは複数の中間媒体が存在してもよい。一方の部品が他方の部品に「接続される」と表現する場合、それが他方の部品に直接接続されてもよいし、その間に1つまたは複数の中間媒体が存在してもよい。本明細書で使用される用語「垂直」、「水平」、「左」、「右」、「内」、「外」およびそれに類似する表現は、説明の目的のためにのみ使用される。 In the following, in order to facilitate understanding of the present application, the present application will be described in more detail in combination with the attached drawings and specific embodiments. Note that when a part is described as being "fixed"/"attached"/"mounted" to another part, they may be directly connected to the other part, or there may be one or more intermediate media between them. When a part is described as being "connected" to another part, it may be directly connected to the other part, or there may be one or more intermediate media between them. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are used for explanatory purposes only.
別に定義がない限り、本明細書において用いられるすべての技術及び科学用語は、本願の技術分野に属する当業者が通常理解する意味合いと同義である。本願明細書において用いられる用語は、具体的な実施形態を記述する目的のみであり、本願を制限するものではない。本明細書で使用される用語「及び/又は」は、1つまたは複数の関連する列挙されたアイテムの任意およびすべての組合せを含む。 Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terms used herein are for the purpose of describing specific embodiments only and are not intended to be limiting of this application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
また、以下に記述する本願の異なる実施形態に係る技術的特徴は、互いの間で競合を構成しない限り、互いに組み合わせもよい。 Furthermore, the technical features of different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
本明細書において、「装着」とは、ある部品又は装置を溶接、螺着、係着、接着等の手段によって特定の位置又は場所に固定又は制限することを含む。前記部品又は装置は、特定の位置又は場所に不動のままでも限定的な範囲内で動いてもよい。前記部品又は装置は、特定の位置又は場所に固定又は制限された後に取り外し可能であっても取り外し不能であってもよく、本願実施形態では制限されない。 In this specification, "attaching" includes fixing or restricting a part or device to a specific position or location by means of welding, screwing, fastening, adhesion, etc. The part or device may remain stationary at the specific position or location or may move within a limited range. The part or device may be removable or non-removable after being fixed or restricted to the specific position or location, and is not limited in the present embodiment.
図1~図3は、本発明の一実施形態に係る電池セル1の断面模式図、極柱アセンブリの一方向に沿う断面模式図、及び極柱アセンブリの下から上への投影模式図を示す。電池セル1は、ケース100、電極アセンブリ200、及び極柱アセンブリ300を含む。ここで、ケース100の内部には、収容キャビティ101が設けられているとともに、収容キャビティ101及び電池セル1の外界環境とそれぞれ連通する開口102が設けられている。電極アセンブリ200は、収容キャビティ101内に収容される。極柱アセンブリ300は、上記の開口102に取り付けられ、且つ一端が電極アセンブリ200と電気的に接続され、他端が上記の外界環境に剥き出しにされて、電池セル1の外部端子を形成するものである。 1 to 3 show a schematic cross-sectional view of a battery cell 1 according to one embodiment of the present invention, a schematic cross-sectional view along one direction of a pole assembly, and a schematic projection view of the pole assembly from bottom to top. The battery cell 1 includes a case 100, an electrode assembly 200, and a pole assembly 300. Here, an accommodating cavity 101 is provided inside the case 100, and an opening 102 is provided that communicates with the accommodating cavity 101 and the external environment of the battery cell 1, respectively. The electrode assembly 200 is accommodated in the accommodating cavity 101. The pole assembly 300 is attached to the opening 102, and one end is electrically connected to the electrode assembly 200 and the other end is exposed to the external environment, forming an external terminal of the battery cell 1.
上記のケース100については、図1に示すように、ケース100は、全体として扁平な直方体状をなし、その内部に、電極アセンブリ200及び電解液を収容するための収容キャビティ101が設けられている。さらに、ケース100には、上述した収容キャビティ101と電池セル1の外界環境とを連通させる開口102がさらに開口されている。開口102は、上述した極柱アセンブリ300を取り付けるために用いられる。本実施形態において、電池セル1は、スチールシェル電池セルであり、即ち、ケース100は、スチールシェルであるが、本願の他の実施形態では、電池セル1は、他のタイプの硬質ケースの電池セルであってもよい。例えば、ケース100は、アルミケース等の他の金属ケースであってもよい。 As shown in FIG. 1, the case 100 has a generally flat rectangular parallelepiped shape, and has an accommodation cavity 101 for accommodating the electrode assembly 200 and the electrolyte therein. The case 100 further has an opening 102 that connects the accommodation cavity 101 to the external environment of the battery cell 1. The opening 102 is used to attach the pole assembly 300. In this embodiment, the battery cell 1 is a steel shell battery cell, i.e., the case 100 is a steel shell, but in other embodiments of the present application, the battery cell 1 may be a battery cell with another type of hard case. For example, the case 100 may be another metal case, such as an aluminum case.
上記の電極アセンブリ200については、図1に示すように、上記の収容キャビティ101に収容され、且つ積層して設けられた第1電極シート(図示せず)と、第2電極シート(図示せず)と、セパレートフィルム(図示せず)とを備えている。ここで、第1電極シートと第2電極シートとは、極性が逆であり、且つ間隔をあけて設けられる。両者の中の一方の電極シートは正極シートであり、他方の電極シートは負極シートである。セパレートフィルムは、上述した2つの電極シートの間に配置されて、この両者を隔てるために使用される。上記の収容キャビティ101に収容されるように、第1電極シート、第2電極シートおよびセパレートフィルムは、積層して配置されて、断面が長円形の柱状構造に巻回されている。なお、本実施形態における電極アセンブリ200が捲回型電極アセンブリであるが、本願はこれに限定されるものではない。本願の他の実施形態では、電極アセンブリ200は積層型電極アセンブリであってもよい。ケース100内には、さらに、電解液が充填されており、この電極アセンブリ200は電解液に浸潤されている。電解液は、リチウムイオンが伝導する環境を提供し、第1電極シート又は第2電極シートにリチウムイオンを適時に吸蔵させることができ、電池セル1の充放電過程を実現している。 As shown in FIG. 1, the electrode assembly 200 includes a first electrode sheet (not shown), a second electrode sheet (not shown), and a separation film (not shown) that are accommodated in the accommodation cavity 101 and stacked. Here, the first electrode sheet and the second electrode sheet have opposite polarities and are spaced apart. One of the two electrode sheets is a positive electrode sheet, and the other is a negative electrode sheet. The separation film is disposed between the two electrode sheets and is used to separate the two. The first electrode sheet, the second electrode sheet, and the separation film are arranged in a stacked manner and wound into a columnar structure having an oval cross section so as to be accommodated in the accommodation cavity 101. Note that, although the electrode assembly 200 in this embodiment is a wound electrode assembly, the present application is not limited thereto. In other embodiments of the present application, the electrode assembly 200 may be a stacked electrode assembly. The case 100 is further filled with an electrolyte, and the electrode assembly 200 is soaked in the electrolyte. The electrolyte provides an environment in which lithium ions can be conducted, allowing the first electrode sheet or the second electrode sheet to absorb lithium ions at the appropriate time, thereby realizing the charging and discharging process of the battery cell 1.
上記の極柱アセンブリ300については、具体的に図2と図3を参照しながら図1を参照すると、当該極柱アセンブリ300は、前述の開口102に取り付けられ、且つ極柱310と、熱変形部材320と、固定具330とを含む。ここで、熱変形部材320は、極柱310を取り囲むように設けられ、且つ極柱310と固定される。固定具330には、貫通孔301が設けられている。固定具330は、この貫通孔301を介して熱変形部材320を取り囲むように設けられ、且つ熱変形部材320と固定される。熱変形部材320は、温度が所定の閾値よりも高い場合に、貫通孔301内に貫通孔301の両端にそれぞれ連通する圧力逃がし通路が形成されるように、変形するように構成される。これにより、電池セル1の温度が所定の閾値よりも高くなると、その内部で発生する高圧ガスを上記の圧力逃がし通路を通じて電池セル1の外界環境に排出することができ、ひいては、電池セル1の膨れを回避して、電池セル1の爆発のリスクを低減又は解消できる。なお、本願でいう「所定の閾値」とは、電池セル1の温度は、熱変形部材320が固定具330の貫通孔301内に圧力逃がし通路が形成されるようにぴったり変形する時の温度値まで上昇することをいう。電池セルの温度が所定の閾値よりも高いときに、圧逃がし通路は既に形成されている。所定の閾値とは、電池セル1の通常動作温度よりも高く、かつ、電池セル1の熱暴走温度より低い温度の値である。即ち、電池セル1が通常の作動状態にあるときに、通常の作動時に上記の圧力逃がし通路が形成されないように、電池セル1は所定の閾値よりも低い温度にある。電池セル1が熱暴走状態にあるときに、熱暴走時に電池セル1から内部ガスが速やかに排出できないことを防止するために、電池セル1は所定の閾値よりも高い温度にある。なお、本願で言う「変形」とは、具体的には、熱溶融及び収縮の形態を含む。 Regarding the above-mentioned pole assembly 300, referring specifically to FIG. 1 with reference to FIG. 2 and FIG. 3, the pole assembly 300 is attached to the above-mentioned opening 102 and includes a pole 310, a thermal deformation member 320, and a fixing device 330. Here, the thermal deformation member 320 is provided so as to surround the pole 310 and is fixed to the pole 310. The fixing device 330 is provided with a through hole 301. The fixing device 330 is provided so as to surround the thermal deformation member 320 through the through hole 301 and is fixed to the thermal deformation member 320. The thermal deformation member 320 is configured to deform so that a pressure relief passage communicating with both ends of the through hole 301 is formed in the through hole 301 when the temperature is higher than a predetermined threshold value. As a result, when the temperature of the battery cell 1 becomes higher than the predetermined threshold, the high-pressure gas generated inside the battery cell 1 can be discharged to the external environment of the battery cell 1 through the pressure relief passage, and the swelling of the battery cell 1 can be avoided, thereby reducing or eliminating the risk of explosion of the battery cell 1. Note that the "predetermined threshold" in this application means that the temperature of the battery cell 1 rises to a temperature value at which the thermal deformation member 320 is deformed to fit so as to form a pressure relief passage in the through hole 301 of the fixing device 330. When the temperature of the battery cell is higher than the predetermined threshold, the pressure relief passage is already formed. The predetermined threshold is a temperature value that is higher than the normal operating temperature of the battery cell 1 and lower than the thermal runaway temperature of the battery cell 1. That is, when the battery cell 1 is in a normal operating state, the battery cell 1 is at a temperature lower than the predetermined threshold so that the pressure relief passage is not formed during normal operation. When the battery cell 1 is in a thermal runaway state, the battery cell 1 is at a temperature higher than the predetermined threshold to prevent the internal gas from being unable to be quickly discharged from the battery cell 1 during thermal runaway. In this application, "deformation" specifically includes thermal melting and shrinkage.
極柱310は、全体として導電性材料からなる柱状をなしている。本実施形態では、極柱310は、金属を含んでいるが、もちろん、本願の他の実施形態では、導電可能な非金属を含んでいてもよいし、金属と非金属との両方を含んでいてもよい。極柱310の軸方向に沿って、その第1端311が熱変形部材320及び固定具330を超えて、電池セル1の外部に露呈して、外部の電気的負荷との電気的接続を容易にする。第2端312は、上記の収容キャビティ101内に進入し、かつ、極柱310が電池セル1の一方の外部端子を構成するように電極アセンブリ200の一方の電極シートと電気的に接続される。また、電極アセンブリ200における他方の電極シートは、ケース100全体として電池セル1の他方の外部端子を構成するように、ケース100と電気的に接続されている。ここで、第1端311と第2端312とは、極柱310の軸方向に沿った対向する両端である。 The pole 310 is generally in the shape of a pole made of a conductive material. In this embodiment, the pole 310 includes a metal, but of course, in other embodiments of the present application, the pole 310 may include a conductive nonmetal or may include both a metal and a nonmetal. Along the axial direction of the pole 310, the first end 311 thereof exceeds the thermal deformation member 320 and the fixing member 330 and is exposed to the outside of the battery cell 1 to facilitate electrical connection with an external electrical load. The second end 312 enters the above-mentioned housing cavity 101 and is electrically connected to one electrode sheet of the electrode assembly 200 so that the pole 310 constitutes one external terminal of the battery cell 1. In addition, the other electrode sheet in the electrode assembly 200 is electrically connected to the case 100 so that the case 100 as a whole constitutes the other external terminal of the battery cell 1. Here, the first end 311 and the second end 312 are opposite ends along the axial direction of the pole 310.
熱変形部材320は、本願の圧力逃がし機能を有する極柱アセンブリ300のコア部品であり、全体として筒状の構造をなし、且つ極柱310を取り囲むように設けられ且つ極柱310と固定されている。上記の筒状構造は、円筒形に限られず、角筒形、又は、断面が多角形の筒状構造であってもよい。熱変形部材320は、比較的に融点の低い素材で形成されることで、電池セル1の熱暴走前に溶融または収縮などの変形が起こりやすく、さらに、貫通孔301内に気体を逃がすための圧力逃がし通路を形成している。幾つかの実施形態では、電池セル1の通常動作温度が100℃未満であり、熱暴走温度が150℃であるが、熱収縮による圧力リークが可能な点を考慮して、熱変形部材320は融点が110℃~170℃の間の材料からなることが好ましい。熱変形部材320は、ポリエチレン、ポリプロピレン、ポリプロピレンエチレンのいずれか、又はこれらの材料の混合物からなる。 The thermal deformation member 320 is a core part of the pole assembly 300 having the pressure relief function of the present application, has a cylindrical structure as a whole, is provided so as to surround the pole 310, and is fixed to the pole 310. The above-mentioned cylindrical structure is not limited to a cylindrical shape, and may be a rectangular tube or a cylindrical structure having a polygonal cross section. The thermal deformation member 320 is formed of a material with a relatively low melting point, so that deformation such as melting or shrinking is likely to occur before the thermal runaway of the battery cell 1, and further forms a pressure relief passage for releasing gas into the through hole 301. In some embodiments, the normal operating temperature of the battery cell 1 is less than 100°C and the thermal runaway temperature is 150°C, but considering the possibility of pressure leakage due to thermal shrinkage, it is preferable that the thermal deformation member 320 is made of a material with a melting point between 110°C and 170°C. The thermal deformation member 320 is made of any one of polyethylene, polypropylene, and polypropylene ethylene, or a mixture of these materials.
固定具330は、極柱アセンブリ300の取付固定部品であり、全体としても筒状をなしており、上述した貫通孔301が設けられている。固定具330は、貫通孔301の内壁を介して熱変形部材320の外面に嵌合されると共に、その外壁を介して開口102に取り付けられている。熱変形部材320と極柱310、固定具330との間は、ホットメルト接続により固定される。もちろん、本願の他の実施形態では、上述した極柱310と、熱変形部材320と、固定具330とは、射出成型により一体成型されてもよい。具体的には、極柱310と固定具330とは、射出成形金型の中にインサートとして配置される。射出成形金型は、上述したポリエチレン(又はポリプロピレン/ポリプロピレンエチレン)を射出して極柱アセンブリ300を成型する。本実施形態では、固定具330は、金属からなり、溶接によりケース100に固定され、ケース100に装着される一方で、開口102のシールが実現される。好ましくは、固定具330が極柱310に接触することに起因する電池セル1の正負極の短絡を防止するために、上述の熱変形部材320は、絶縁材である。これと同時に、固定具330の両端は、貫通孔301の長軸方向に沿って、熱変形部材320の両端の間に位置する。 The fixture 330 is a mounting and fixing part of the pole assembly 300, and is cylindrical as a whole, and has the above-mentioned through hole 301. The fixture 330 is fitted to the outer surface of the thermal deformation member 320 through the inner wall of the through hole 301, and is attached to the opening 102 through the outer wall. The thermal deformation member 320, the pole 310, and the fixture 330 are fixed by hot melt connection. Of course, in other embodiments of the present application, the above-mentioned pole 310, the thermal deformation member 320, and the fixture 330 may be integrally molded by injection molding. Specifically, the pole 310 and the fixture 330 are placed as inserts in an injection molding die. The injection molding die molds the pole assembly 300 by injecting the above-mentioned polyethylene (or polypropylene/polypropylene ethylene). In this embodiment, the fixture 330 is made of metal, and is fixed to the case 100 by welding, and is attached to the case 100 while sealing the opening 102. Preferably, the thermal deformation member 320 is an insulating material to prevent short-circuiting of the positive and negative electrodes of the battery cell 1 caused by the fixing device 330 coming into contact with the pole 310. At the same time, both ends of the fixing device 330 are located between both ends of the thermal deformation member 320 along the longitudinal direction of the through hole 301.
好ましくは、固定具330がケース100に対して回動することを回避して、固定具330とケース100との固定効果を破壊することを防止するために、固定具330は、上記の貫通孔301の軸方向に垂直な断面の外郭が、非円形、例えば、長方形、正方形、菱形、五角形等を呈する。これ相応に、上記の開口102は、固定具330の形状にマッチングしている。即ち、断面が上記の固定具330に適合する非円形に形成される。このように、固定具330が開口102に取り付けられた後、開口102の内壁が固定具330の回動を好適に阻止して、上記の目的を達成する。更に好ましくは、熱変形部材320が固定具330に対して回転し、さらに、熱変形部材320と固定具330との固定効果が損なわれることを防止するために、熱変形部材320の貫通孔301の軸方向に垂直な断面の外郭が非円形とされた。これ相応に、貫通孔301の形状は、熱変形部材320にマッチングする。さらに好ましくは、極柱310が熱変形部材320に対する回動を回避し、さらに、極柱310と熱変形部材320との固定効果を破壊することを防止するために、極柱310の貫通孔301の軸方向に垂直な断面の外郭が非円形とされた。これ相応に、熱変形部材320の内孔の形状は、極柱310にマッチングしている。 Preferably, in order to prevent the fixing device 330 from rotating relative to the case 100 and to prevent the fixing effect between the fixing device 330 and the case 100 from being destroyed, the fixing device 330 has a non-circular outer shape, for example, a rectangle, a square, a rhombus, a pentagon, etc., in a cross section perpendicular to the axial direction of the through hole 301. Correspondingly, the opening 102 matches the shape of the fixing device 330. That is, the cross section is formed in a non-circular shape that matches the fixing device 330. In this way, after the fixing device 330 is attached to the opening 102, the inner wall of the opening 102 suitably prevents the fixing device 330 from rotating, thereby achieving the above-mentioned purpose. More preferably, in order to prevent the thermal deformation member 320 from rotating relative to the fixing device 330 and further to prevent the fixing effect between the thermal deformation member 320 and the fixing device 330 from being damaged, the outer shape of the cross section perpendicular to the axial direction of the through hole 301 of the thermal deformation member 320 is made non-circular. Correspondingly, the shape of the through hole 301 matches the thermal deformation member 320. More preferably, in order to prevent the pole 310 from rotating relative to the thermal deformation member 320 and to prevent the fixing effect between the pole 310 and the thermal deformation member 320 from being destroyed, the outer contour of the cross section perpendicular to the axial direction of the through hole 301 of the pole 310 is made non-circular. Correspondingly, the shape of the inner hole of the thermal deformation member 320 matches the pole 310.
さらに、極柱アセンブリ300が外界負荷と接触できる面積を大きくするために、極柱アセンブリ300は導電端子340をさらに備えている。具体的には、図2に示すように、導電端子340は、扁平の板状構造をなし、極柱310の第1端に固定される。導電端子340は、極柱310の軸方向に沿って対向して設けられた2つの端面341を有する。導電端子340の極柱310に向かう一方の端面341は、極柱310の端面よりも大きく、且つ極柱310を完全に覆う。即ち、導電端子340の断面積の全体は、極柱310の断面積よりも大きくなるように設けられることで、極柱アセンブリ300における負荷と電気的に接続するための領域が効果的に広げられた。また、極柱310の第1端311は、導電端子340と貫通孔301との間に一定の隙間を有するように、熱変形部材320と固定具330を超えて設けられているので、電池セル1内の気体が排出する時に外へスムーズに放出されることができる。導電端子340は、かしめ、切削などのプロセスにより、極柱310と一体成形されていてもよい。なお、本願の他の実施形態では、導電端子340と極柱310とは別体で成形されて、溶接などにより固定されていてもよい。また、導電端子340の端面341は、矩形または丸角矩形である。導電端子340の端面341が大きすぎると、溶接装置のヘッドが開口102の縁に入り込んで溶接工程を行なうことが困難になってしまうため、本実施形態では、端面341の幅寸法と固定具330の最大リニア寸法との差が4mm未満となっている。即ち、端面341の幅方向に沿って、導電端子340の一辺が固定具330を超える寸法は、2mm未満である。 Furthermore, in order to increase the area where the pole assembly 300 can contact the external load, the pole assembly 300 further includes a conductive terminal 340. Specifically, as shown in FIG. 2, the conductive terminal 340 has a flat plate-like structure and is fixed to the first end of the pole 310. The conductive terminal 340 has two end faces 341 that are provided opposite to each other along the axial direction of the pole 310. One end face 341 of the conductive terminal 340 facing the pole 310 is larger than the end face of the pole 310 and completely covers the pole 310. That is, the entire cross-sectional area of the conductive terminal 340 is set to be larger than the cross-sectional area of the pole 310, thereby effectively expanding the area for electrically connecting to the load in the pole assembly 300. In addition, the first end 311 of the pole 310 is provided beyond the thermal deformation member 320 and the fixing device 330 so that there is a certain gap between the conductive terminal 340 and the through hole 301, so that the gas in the battery cell 1 can be smoothly discharged to the outside when it is exhausted. The conductive terminal 340 may be integrally formed with the pole 310 by a process such as crimping or cutting. In other embodiments of the present application, the conductive terminal 340 and the pole 310 may be formed separately and fixed by welding or the like. In addition, the end face 341 of the conductive terminal 340 is rectangular or rectangular with rounded corners. If the end face 341 of the conductive terminal 340 is too large, the head of the welding device will enter the edge of the opening 102, making it difficult to perform the welding process. Therefore, in this embodiment, the difference between the width dimension of the end face 341 and the maximum linear dimension of the fixing device 330 is less than 4 mm. That is, the dimension by which one side of the conductive terminal 340 exceeds the fixing device 330 along the width direction of the end face 341 is less than 2 mm.
本願の実施形態に係る電池セル1は、ケース100と、電極アセンブリ200と、極柱アセンブリ300とを備えている。そのうち、極柱アセンブリ300は、極柱310、熱変形部材320及び固定具330を含む。熱変形部材320と固定具330は、極柱310の外周に内から外へこの順で環設される。熱変形部材320は、温度が予め設定された閾値よりも高くなると変形して、貫通孔301内に当該貫通孔301の両端とそれぞれ連通する圧力逃がし通路を形成するように構成される。 The battery cell 1 according to the embodiment of the present application includes a case 100, an electrode assembly 200, and a pole assembly 300. The pole assembly 300 includes a pole 310, a thermal deformation member 320, and a fixing device 330. The thermal deformation member 320 and the fixing device 330 are annularly arranged in this order from the inside to the outside on the outer periphery of the pole 310. The thermal deformation member 320 is configured to deform when the temperature becomes higher than a preset threshold value, and to form a pressure relief passage in the through hole 301 that is connected to both ends of the through hole 301.
現在市販されている電池セルと比較して、本願の実施形態による電池セル1の内部の熱変形部材320は、電池セルの温度が所定の閾値を上回った場合に変形し、固定具330の貫通孔301内に圧力逃がし通路を形成することにより、電池セル1内のガスを外部に排出させて、電池セルの爆発の安全リスクを低減することができる。即ち、本願の実施形態によって提供される電池セルは、現在の電池セルは温度が特定の温度より高い場合に、内部ガスを速やかに排出できない現状を改善することができる。 Compared to battery cells currently available on the market, the thermal deformation member 320 inside the battery cell 1 according to the embodiment of the present application deforms when the temperature of the battery cell exceeds a certain threshold, and forms a pressure relief passage in the through hole 301 of the fixing device 330, thereby allowing the gas inside the battery cell 1 to be discharged to the outside, thereby reducing the safety risk of the battery cell exploding. In other words, the battery cell provided by the embodiment of the present application can improve the current situation in which current battery cells cannot quickly discharge internal gas when the temperature is higher than a certain temperature.
なお、上記の実施形態では、電池セル1の極柱アセンブリ300が、極柱310と熱変形部材320と固定具330とを同時に備えていたが、本願はこれに限定されるものではなく、固定具330は省略できる場合がある。例えば、本願の他の幾つかの実施形態では、電池セル1における極柱アセンブリは、上述の極柱と熱変形部材のみを備えていてもよい。この場合、極柱の第1端はケースの外に露出し、極柱の第2端はケース内に進入し、熱変形部材は極柱を取り囲むように設けられ且つ極柱と開口の内壁との間に位置する。こうすれば、当該極柱アセンブリを含む電池セルは、従来の電池セルがある特定の温度よりも温度が高くなったときに、内部ガスをタイムリーに排出できない現状を改善することができる。 In the above embodiment, the pole assembly 300 of the battery cell 1 simultaneously includes the pole 310, the thermal deformation member 320, and the fixing device 330, but the present application is not limited to this, and the fixing device 330 may be omitted. For example, in some other embodiments of the present application, the pole assembly in the battery cell 1 may include only the pole and the thermal deformation member described above. In this case, the first end of the pole is exposed to the outside of the case, the second end of the pole enters the case, and the thermal deformation member is provided to surround the pole and is located between the pole and the inner wall of the opening. In this way, the battery cell including the pole assembly can improve the current situation in which internal gas cannot be discharged in a timely manner when the temperature of a conventional battery cell becomes higher than a certain temperature.
同一の発明思想のもと、本願は、極柱アセンブリをさらに提供している。図1乃至図3に示すように、当該極柱アセンブリは、上述したいずれの実施形態における電池セル1の極柱アセンブリとも同様の構成を有する。この極柱アセンブリを電池セルに適用した場合、電池セルの温度が所定の閾値を上回った場合に、その内部の熱変形部材が変形し、固定具の貫通孔内に圧力逃がし通路が形成され、電池セル内の気体を外部に放出することで、電池セルの爆発の安全リスクを低減できる。即ち、本願実施形態によって提供される極柱アセンブリは、従来の電池セルがある特定の温度よりも温度が高くなったときに、内部ガスをタイムリーに排出できない現状を改善することができる。 Based on the same inventive concept, the present application further provides a pole assembly. As shown in Figs. 1 to 3, the pole assembly has a similar configuration to the pole assembly of the battery cell 1 in any of the above-mentioned embodiments. When this pole assembly is applied to a battery cell, when the temperature of the battery cell exceeds a predetermined threshold, the thermal deformation member inside the battery cell deforms, forming a pressure relief passage in the through hole of the fixing device, and the gas inside the battery cell is released to the outside, thereby reducing the safety risk of the battery cell exploding. In other words, the pole assembly provided by the present embodiment can improve the current situation in which the internal gas cannot be released in a timely manner when the temperature of a conventional battery cell becomes higher than a certain temperature.
同一の発明思想のもと、本願では、上記したいずれかの実施形態に記載されている電池セルを有する電気設備2をさらに提供している。図4は、本願の一実施形態による電気設備2を示している。本実施形態において、電気設備2が携帯電話であるが、他の実施形態では、電気設備2がタブレット、パソコン、ドローン等の他の電力で駆動する必要がある電力使用装置であってもよい。 Based on the same inventive concept, the present application further provides an electrical device 2 having a battery cell described in any of the above-mentioned embodiments. FIG. 4 shows the electrical device 2 according to one embodiment of the present application. In this embodiment, the electrical device 2 is a mobile phone, but in other embodiments, the electrical device 2 may be a tablet, a personal computer, a drone, or another power-using device that needs to be powered by electricity.
最後に、上記の実施形態は、本願の技術提案を説明するためにのみ使用され、これを制限するものではない。本願の技術思想の下で、上記の実施形態又は異なる実施形態における技術的特徴を互いに組み合わせることが可能であり、そのステップは任意の順序で実現されることができ、上記のような異なる態様の多くの変化が存在し、簡明化のために詳細には提供されない。上記の実施形態を参照して本願について詳細に説明したが、当業者であれば、上記各実施形態に記載された技術案を修正したり、その一部の技術的特徴を同等に置換したりすることができることを理解すべきである。しかし、これらの補正又は置換に対応する発明の本質は、本願発明の範囲から逸脱するものではない。 Finally, the above embodiments are used only to explain the technical proposal of the present application, and are not limited thereto. Under the technical idea of the present application, the technical features in the above embodiments or different embodiments can be combined with each other, and the steps can be realized in any order, and there are many variations of the above different aspects, which are not provided in detail for the sake of clarity. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical proposals described in each of the above embodiments can be modified or some of the technical features can be replaced with equivalents. However, the essence of the invention corresponding to these amendments or replacements does not deviate from the scope of the present invention.
1 電池セル
100 ケース
101 収容キャビティ
102 開口
200 電極アセンブリ
300 極柱アセンブリ
310 極柱
311 第1端
312 第2端
320 熱変形部材
330 固定具
340 導電端子
341 端面
301 貫通孔
REFERENCE SIGNS LIST 1 battery cell 100 case 101 receiving cavity 102 opening 200 electrode assembly 300 pole assembly 310 pole 311 first end 312 second end 320 thermal deformation member 330 fastener 340 conductive terminal 341 end surface 301 through hole
Claims (10)
極柱と、熱変形部材と、固定具と、を備え、前記熱変形部材は、前記極柱を取り囲むように設けられ、且つ前記極柱と固定され、
前記固定具は、貫通孔を有し、前記貫通孔を介して前記熱変形部材を取り囲むように設けられ、且つ前記熱変形部材と固定され、
前記熱変形部材は、温度が所定の閾値よりも高い場合に、前記貫通孔内に、前記貫通孔の両端にそれぞれ連通する圧力逃がし通路が形成されるように変形し、
前記熱変形部材は、絶縁材であり、前記固定具は、前記貫通孔の軸方向に沿って、前記熱変形部材の両端の間に位置することを特徴とする極柱アセンブリ。 A pole assembly for application to a battery cell, comprising:
a pole, a thermal deformation member, and a fixing member, the thermal deformation member being provided so as to surround the pole and being fixed to the pole;
the fixing device has a through hole, is provided so as to surround the thermal deformation member via the through hole, and is fixed to the thermal deformation member;
When the temperature of the thermal deformation member is higher than a predetermined threshold value, the thermal deformation member deforms so that a pressure relief passage is formed in the through hole, the pressure relief passage communicating with both ends of the through hole,
The thermal deformation member is made of an insulating material, and the fixing device is located between both ends of the thermal deformation member along the axial direction of the through hole.
前記電池セルは、請求項1~6のいずれか一項に記載の極柱アセンブリをさらに備え、前記固定具が前記開口に取り付けられ、前記極柱の第1端は前記外界環境に露呈し、前記極柱の第2端は前記電極アセンブリと電気的に接続されていることを特徴とする電池セル。 The battery cell includes a case and an electrode assembly, the case having a receiving cavity for receiving the electrode assembly, and an opening communicating with the receiving cavity and an external environment of the battery cell, respectively;
The battery cell further comprises the electrode post assembly according to any one of claims 1 to 6 , wherein the fixing device is attached to the opening, a first end of the electrode post is exposed to the external environment, and a second end of the electrode post is electrically connected to the electrode assembly.
ケースと電極アセンブリとを含み、前記ケースには、前記電極アセンブリを収容する収容キャビティを有するとともに、前記収容キャビティ及び前記電池セルの外界環境にそれぞれ連通する開口が設けられており、
前記電池セルは、極柱アセンブリをさらに備え、
前記極柱アセンブリは、前記開口に取り付けられ、且つ極柱、熱変形部材及び前記熱変形部材に固定される固定具を含み、前記極柱の第1端は前記外界環境に露呈し、前記極柱の第2端は前記電極アセンブリと電気的に接続され、
前記固定具は、貫通孔を有し且つ前記貫通孔を介して前記熱変形部材を取り囲むように設けられ、
前記熱変形部材は、前記極柱を取り囲むように設けられ、且つ前記極柱と前記開口の内壁との間に位置し、
前記熱変形部材は、絶縁材であり、前記固定具は、前記貫通孔の軸方向に垂直な断面が非円形状をなし、
前記熱変形部材は、温度が所定の閾値よりも高い場合に、前記貫通孔内に圧力逃がし通路が形成されるように、溶融または収縮することを特徴とする電池セル。 A battery cell,
The battery cell includes a case and an electrode assembly, the case having a receiving cavity for receiving the electrode assembly, and an opening communicating with the receiving cavity and an external environment of the battery cell, respectively;
The battery cell further comprises a pole assembly;
the pole assembly is mounted in the opening and includes a pole, a thermal deformation member, and a fastener fixed to the thermal deformation member, a first end of the pole being exposed to the external environment, and a second end of the pole being electrically connected to the electrode assembly;
the fixing tool has a through hole and is provided so as to surround the thermal deformation member via the through hole,
the thermal deformation member is provided so as to surround the electrode post and is located between the electrode post and an inner wall of the opening ,
the thermal deformation member is an insulating material, and the fixing device has a non-circular cross section perpendicular to an axial direction of the through hole;
The battery cell, wherein the thermal deformation member melts or shrinks when the temperature is higher than a predetermined threshold value so that a pressure relief passage is formed within the through hole.
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000067840A (en) | 1998-03-30 | 2000-03-03 | Renata Ag | Safe vent hole for storage battery or battery |
JP2001229904A (en) | 2000-02-21 | 2001-08-24 | Yuasa Corp | Sealed battery |
JP2002203529A (en) | 2000-12-21 | 2002-07-19 | Renata Ag | Ventilating structure for safety coping with battery storage in long term |
JP2006012814A (en) | 2004-06-22 | 2006-01-12 | Samsung Sdi Co Ltd | Lithium-ion secondary battery |
JP2011238412A (en) | 2010-05-07 | 2011-11-24 | Hitachi Vehicle Energy Ltd | Secondary battery |
JP2012094250A (en) | 2010-10-22 | 2012-05-17 | Hitachi Maxell Energy Ltd | Sealed battery |
JP2015185225A (en) | 2014-03-20 | 2015-10-22 | 日立マクセル株式会社 | Hermetically sealed battery |
-
2021
- 2021-03-30 CN CN202120649284.2U patent/CN215119176U/en active Active
-
2022
- 2022-02-18 JP JP2022024256A patent/JP7482160B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000067840A (en) | 1998-03-30 | 2000-03-03 | Renata Ag | Safe vent hole for storage battery or battery |
JP2001229904A (en) | 2000-02-21 | 2001-08-24 | Yuasa Corp | Sealed battery |
JP2002203529A (en) | 2000-12-21 | 2002-07-19 | Renata Ag | Ventilating structure for safety coping with battery storage in long term |
JP2006012814A (en) | 2004-06-22 | 2006-01-12 | Samsung Sdi Co Ltd | Lithium-ion secondary battery |
JP2011238412A (en) | 2010-05-07 | 2011-11-24 | Hitachi Vehicle Energy Ltd | Secondary battery |
JP2012094250A (en) | 2010-10-22 | 2012-05-17 | Hitachi Maxell Energy Ltd | Sealed battery |
JP2015185225A (en) | 2014-03-20 | 2015-10-22 | 日立マクセル株式会社 | Hermetically sealed battery |
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