WO2019198279A1 - 電池パック及び電子機器 - Google Patents
電池パック及び電子機器 Download PDFInfo
- Publication number
- WO2019198279A1 WO2019198279A1 PCT/JP2018/048115 JP2018048115W WO2019198279A1 WO 2019198279 A1 WO2019198279 A1 WO 2019198279A1 JP 2018048115 W JP2018048115 W JP 2018048115W WO 2019198279 A1 WO2019198279 A1 WO 2019198279A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holder
- battery pack
- battery
- battery element
- absorbing structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
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
- H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
-
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/231—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 having a layered structure
-
- 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
- H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
-
- 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
- H01M50/271—Lids or covers for the racks or secondary casings
- H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
- H01M50/282—Lids or covers for the racks or secondary casings characterised by the material having a layered structure
-
- 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
- H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
- H01M50/287—Fixing of circuit boards to lids or covers
-
- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
Definitions
- This disclosure relates to a battery pack and an electronic device.
- mobile devices such as mobile phones and tablet computers typified by smartphones are known.
- mobile devices it is a challenge to prevent damage to internal components due to the impact of dropping.
- Mobile devices are equipped with secondary batteries represented by lithium ion secondary batteries. Such a secondary battery may also be damaged by moving through a space in the mobile device due to the impact of the mobile device falling and colliding with an inner wall or the like in the mobile device. For this reason, measures are taken to reduce damage to the secondary battery due to the impact of the mobile device falling.
- Patent Document 1 discloses a battery cell that can be applied to a portable electronic device and in which a battery element is housed in an exterior material made of a laminate film, and a resin layer is inserted on one or more surfaces of the battery element.
- a battery cell is disclosed in which the outer packaging material is isolated.
- the battery element is protected from an external impact by the impact buffering action of the resin layer.
- the battery cell disclosed in Patent Document 1 adds a shock-absorbing resin layer between the battery element and the exterior material, and increases the size of the battery pack. Since the demand for downsizing of mobile devices is high, it is desirable to avoid the enlargement of the battery pack as much as possible.
- the present disclosure proposes a new and improved battery pack and electronic device that can reduce the damage of the battery element due to an external impact while suppressing the enlargement of the battery pack.
- a battery pack includes a battery cell including a battery element, at least one holder provided facing an end of the battery element, and an impact absorbing structure formed on the holder. Is done.
- an electronic device including the battery pack described above is provided.
- a structure including a battery element before being packaged with a laminate sheet is referred to as a battery cell, and a structure in which a circuit board is connected to the battery cell and a laminate sheet, a top holder, and a bottom holder are attached is referred to as a battery pack.
- the lead-out side of the positive electrode terminal and the negative electrode terminal is referred to as a top portion
- the side facing the top portion is referred to as a bottom portion
- the other side is referred to as a side portion.
- the length in the direction of both side portions may be referred to as the width
- the length in the direction of the top portion-bottom portion may be referred to as the height.
- FIG. 1 is a perspective view showing an external appearance of the battery pack 10.
- FIG. 2 is an exploded perspective view illustrating a configuration example of the battery pack 10.
- the battery pack 10 is, for example, a battery pack of a rectangular or flat lithium ion secondary battery.
- the battery pack 10 is mounted on a portable electronic device.
- the electronic device may be configured such that the battery pack 10 cannot be attached or detached by the user, or may be configured such that the user can attach or remove the battery pack 10.
- Examples of electronic devices include mobile phones such as smartphones, tablet computers, laptop personal computers, personal digital assistants (PDAs), display devices, navigation systems, electronic books, electronic dictionaries, music players, and the like. However, it is not limited to these examples.
- the battery pack 10 includes a battery cell 20, a top holder 11, a bottom holder 13, a circuit board 40, and a laminate sheet 30.
- the battery cell 20 includes a battery element that is externally connected with a laminate film such as a soft aluminum sheet and is electrically connected to the circuit board 40.
- a laminate sheet 30 is wound around and attached to the outer periphery of the battery cell 20. Openings are formed in the top portion and the bottom portion of the battery cell 20 around which the laminate sheet 30 is wound, and the top holder 11 and the bottom holder 13 are attached to the respective openings.
- FIG. 2 illustration of an electrically insulating adhesive sheet for fixing the circuit board 40 and the top holder 11 is omitted.
- the battery cell 20 includes a battery element having a positive electrode terminal 18a and a negative electrode terminal 18b.
- the positive electrode terminal 18 a and the negative electrode terminal 18 b are covered with an insulating insulating sheet (not shown) except for a connection portion with the circuit board 40.
- FIG. 3 is a perspective view showing a configuration example of the battery element 21 constituting the battery cell 20.
- the battery element 21 is a laminate in which a positive electrode, a separator, a negative electrode, and a separator are laminated in this order.
- the battery element 21 of the battery pack 10 according to the present embodiment is a wound battery element in which a band-shaped laminate is wound.
- a positive electrode terminal 18 a is connected to the positive electrode of the battery element 21, and a negative electrode terminal 18 b is connected to the negative electrode.
- the battery element 21 is housed in a laminate film (not shown) such as a soft aluminum sheet.
- the battery cell 20 is formed in a flat and thin plate shape in order to cope with a reduction in size or thickness of an electronic device.
- the battery element 21 may be a known one.
- the circuit board 40 is disposed at the top of the plate-shaped battery cell 20 and is connected to the positive terminal 18 a and the negative terminal 18 b of the battery element 21. On the circuit board 40, for example, a temperature detection element, a fuse, and a thermal resistance element (not shown) are mounted. The circuit board 40 is connected to a flexible circuit board 43 that is connected to the main body of the electronic device.
- the top holder 11 is attached to the end of the top portion of the battery cell 20.
- the top holder 11 is wrapped and fixed by the laminate sheet 30 together with the battery cell 20 in a state where the top holder 11 is disposed at the end of the top portion of the battery cell 20, for example.
- the circuit board 40 is held in the top holder 11.
- the top holder 11 has an opening 11 a at a position corresponding to the position of the flexible circuit board 43 connected to the circuit board 40.
- the flexible circuit board 43 is led out to the outside through the opening 11a.
- the bottom holder 13 is attached to the end of the bottom portion of the battery cell 20.
- the bottom holder 13 is wrapped and fixed by the laminate sheet 30 together with the battery cell 20 in a state where the bottom holder 13 is disposed at the end of the bottom part of the battery cell 20, for example. Further, the bottom holder 13 shown in FIG. 2 is fixed to the battery cell 20 by the adhesive 15.
- FIG. 2 the configurations of the top holder 11 and the bottom holder 13 are shown in a simplified manner.
- the laminate sheet 30 has a substantially rectangular shape and is attached to the battery cell 20 so as to enclose the battery cell 20.
- the laminate sheet 30 is affixed around the battery cell 20 via an adhesive layer.
- the laminate sheet 30 is a protective sheet for protecting the battery cell 20, and may have higher strength than a resin laminate sheet. Thereby, the battery cell 20 can be protected from an external impact.
- the laminate sheet 30 may be a laminated body in which an electrically insulating resin layer is laminated on both surfaces of a hard aluminum layer, for example.
- the resin layer may be a layer made of, for example, PET (Polyethylene Terephthalate) resin.
- the battery element 21 is configured by winding a belt-shaped laminate, and the end portions in the width direction of the belt-shaped laminate are located at the top portion and the bottom portion. For this reason, when an impact is applied to the battery pack 10 from the top portion or the bottom portion, the end portion of the battery element 21 is easily damaged. For example, deformation of the end of the battery element 21 may damage the separator and cause a short circuit between the positive electrode and the negative electrode.
- the top holder 11 attached to the end portion of the top portion of the battery cell 20 and the bottom holder 13 attached to the end portion of the bottom portion have an impact absorbing structure that alleviates impact such as dropping. Are integrally formed.
- FIG. 4 is a schematic diagram showing the internal structure of the electronic device 100 on which the battery pack 10 is mounted, and shows a state where the back cover of the electronic device 100 is removed.
- the electronic device 100 illustrated in FIG. 4 is an example of a thin smartphone.
- the battery pack 10 is arranged such that the direction of the top portion-bottom portion is along the longitudinal direction of the electronic device 100.
- the battery pack 10 is mounted on the electronic device 100 and is electrically connected to the device body through the connection terminals of the flexible circuit board 43.
- the battery pack 10 is positioned and arranged at a predetermined position.
- the battery pack 10 is arranged with an interval within a predetermined tolerance range with respect to surrounding components.
- the battery pack 10 is fixed inside the device main body of the electronic device 100 using a double-sided tape 101.
- the battery pack 10 is fixed to a back cover (not shown) via a double-sided tape 101.
- shock absorbing structures are formed on the top holder 11 and the bottom holder 13.
- FIG. 5 is a schematic diagram showing a state in which the laminate sheet 30 of the battery pack 10 according to the present embodiment is removed.
- FIG. 6 is a schematic diagram illustrating a configuration example of the bottom holder 13. Since the shock absorbing structure of the top holder 11 can be configured similarly to the shock absorbing structure of the bottom holder 13, only the structure of the bottom holder 13 will be described here.
- the bottom holder 13 is disposed between the first member 151 and the second member 153 and the first member 151 and the second member 153 disposed along the direction away from the end of the bottom portion of the battery cell 20. And an elastically deformable portion 155 provided. That is, the shock absorbing structure of the bottom holder 13 shown in FIG. 6 is formed by an elastic structure. Both ends of the elastic deformation portion 155 are connected to both ends of the second member 153, are curved and protrude toward the first member 151, and a central portion is connected to the first member 151.
- the bottom holder 13 may be a molded product integrally formed using a resin material, for example.
- the bottom holder 13 may be a molded product in which the first member 151, the second member 153, and the elastic deformation portion 155 are joined to each other.
- 1st member 151 is joined to the edge part of the bottom part of battery cell 20 with the adhesive agent etc. which are not illustrated.
- the second member 153 is located at the end of the bottom portion of the battery pack 10.
- the first member 151 and the elastic deformation portion 155 may be completely covered with the laminate sheet 30, while a part of the second member 153 may be exposed without being covered with the laminate sheet 30.
- FIG. 7 is an explanatory diagram illustrating a state in which the bottom holder 13 is deformed when the electronic device 100 is dropped with the bottom portion of the battery pack 10 positioned below.
- the elastic deformation portion 155 is deformed so that the distance between the first member 151 and the second member 153 of the bottom holder 13 approaches. Thereby, at least a part of the impact is absorbed, and the impact applied to the battery cell 20 is reduced.
- the height of the elastic deformation portion 155 corresponding to the distance between the first member 151 and the second member 153 and the plate thickness of the constituent portion of the elastic deformation portion 155 are changed.
- the degree of bending of the elastic deformation portion 155 can be adjusted. Thereby, the degree of impact absorption by the bottom holder 13 can be adjusted.
- the bottom holder 13 has a width (length in the left-right direction) of about 5 cm and a height (length in the up-down direction) of about 0.2 cm.
- the height of the battery pack 10 can be suppressed because it is equivalent to the height of the conventional bottom holder.
- FIG. 8 is a schematic diagram showing a bottom holder 13A according to a first modification.
- the space between the elastically deforming portion 155 and the second member 153 of the bottom holder 13 described in the above embodiment is filled with the resin material 157.
- the resin material 157 functions as an adjustment unit that adjusts the degree of shock absorption.
- the resin material 157 is filled in the entire space between the elastic deformation portion 155 and the second member 153, but the resin material may be disposed in a part of the space. .
- the degree of impact absorption by the bottom holder 13A can be adjusted.
- shock absorbing structure of the top holder 11 can also have the same configuration as the shock absorbing structure of the bottom holder 13 according to the first modification.
- FIG. 9 is a schematic diagram showing a bottom holder 13B according to a second modification.
- the first member 151 of the bottom holder 13 described in the above embodiment is omitted, and the second member (base member) 153 is provided with an elastic deformation portion 155. It is.
- the height (length in the vertical direction in the drawing) of the bottom holder 13B is reduced by the amount of the first member 151 being omitted, and the battery pack 10 is increased in size. Can be further suppressed.
- the space between the elastically deforming portion 155 and the second member 153 is filled with a resin material having elasticity, and the bottom holder 13B absorbs the shock.
- the degree may be adjusted.
- the shock absorbing structure of the top holder 11 can have the same configuration as the shock absorbing structure of the bottom holder 13B according to the second modification.
- FIG. 10 is a schematic diagram showing a top holder 11A according to a third modification.
- the top holder 11A according to the third modification is different from the elastic deformation portion 155 of the bottom holder 13 described in the above embodiment in the elastic deformation portion 165 provided between the first member 161 and the second member 163. ing.
- the first member 161 and the second member 163 are connected by elastic deformation portions 165a and 165b on the left and right ends, respectively.
- the cross-sectional shapes of the two elastically deformable portions 165a and 165b are each V-shaped.
- the two elastically deformable portions 165a and 165b are provided so that the bent portions having a V-shaped cross section face the outside.
- at least the elastic deformation portions 165a and 165b are formed using a resin material. For this reason, when the battery pack 10 is moved upward in the figure due to the impact of the drop of the electronic device 100, the elastic deformation portion 165 is deformed so that the distance between the first member 161 and the second member 163 of the top holder 11A approaches. To do. Thereby, at least a part of the impact is absorbed, and the impact applied to the battery cell 20 is reduced.
- the top holder 11A according to the third modification has a larger stroke amount when the elastic deformation portion 165 is deformed and can increase the shock absorption amount than the shock absorption structure of the bottom holder 13 described in the above embodiment. it can.
- the first member 161, the second member 163, and the elastic deformation portion 165a In the top holder 11A according to the third modification, the first member 161, the second member 163, and the elastic deformation portion 165a.
- the space surrounded by 165b is large. For this reason, components, such as the circuit board 40, can be arrange
- a space between the first member 161, the second member 163, and the elastically deforming portions 165a and 165b is filled with an elastic resin material. Then, the shock absorption degree of the top holder 11A may be adjusted. Also, the shock absorbing structure of the bottom holder 13 can have the same configuration as the shock absorbing structure of the top holder 11A according to the third modification.
- the top holder 11 and the bottom holder 13 that are parts constituting the battery pack 10 are provided with an impact absorbing structure without any additional parts. For this reason, it is possible to mitigate an impact such as a drop while reducing the possibility of hindering the miniaturization of the portable electronic device.
- the battery pack 10 adjusts the elastic force or the shock absorbing force by changing the type of the resin material constituting the top holder 11 and the bottom holder 13 and the form of the elastic deformation portion 155. Can do. For this reason, it can apply as the battery pack 10 of not only a smart phone but various portable electronic devices.
- both the top holder 11 and the bottom holder 13 that are disposed in the vicinity of the end in the width direction of the band-shaped laminate constituting the battery element 21 are provided with the shock absorbing structure.
- the shock absorbing structure may be provided only on either the top holder 11 or the bottom holder 13.
- the battery element made of a strip-shaped laminate is used as the battery element 21, but the technology of the present disclosure is not limited to such an example.
- the battery element 21 may be a stacked battery element in which a positive electrode, a separator, a negative electrode, and a separator are repeatedly stacked.
- a positive electrode, a separator, a negative electrode, and a separator are repeatedly stacked.
- the ends of the positive electrode and the negative electrode exist all around the battery element 21, not only the top portion and the bottom portion, but also a holder provided with an impact absorbing structure at an appropriate end portion around the battery cell 20 is disposed. May be. Thereby, even if it is a case where an electronic device is dropped from which direction, the impact of a fall is relieve
- a battery pack comprising: a battery cell including a battery element; at least one holder provided facing an end of the battery element; and an impact absorbing structure formed on the holder.
- the shock absorbing structure includes an elastic deformation portion provided in the holder.
- the holder is provided between the first member and the second member, and the first member and the second member arranged along a direction away from the end of the battery element.
- the battery pack according to (2) including the elastic deformation portion.
- the holder includes a base member and the elastically deformable portion provided closer to the end of the battery cell than the base member.
- the battery element is a wound-type battery element formed by winding an electrode layer, and the holder faces at least one end portion of the wound electrode layer in the width direction.
- the battery element is a stacked battery element formed by laminating electrode layers, and the holder is provided to face at least one of four edges of the electrode layer.
- the battery pack includes a protective sheet wound around the battery cell, and the holder is provided on an end side in a width direction of the wound protective sheet.
- An electronic device including a battery pack, wherein the battery pack is formed in the battery cell including a battery element, at least one holder provided facing an end of the battery element, and the holder And an impact absorbing structure.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Computer Hardware Design (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
なお、上記の効果は必ずしも限定的なものではなく、上記の効果とともに、又は上記の効果に代えて、本明細書に示されたいずれかの効果、又は本明細書から把握され得る他の効果が奏されてもよい。
1.電池パックの基本構成例
2.衝撃吸収構造
3.変形例
まず、本開示の実施の形態に係る電池パックの基本構成例を説明する。以下の説明においては、本実施形態に係る電池パックの構成要素として、従来の電池パックにおいても備えられる構成要素の基本的態様について説明する。図1は、電池パック10の外観を示す斜視図である。図2は、電池パック10の構成例を示す分解斜視図である。
電池セル20は、正極端子18a及び負極端子18bを有する電池素子を備えている。正極端子18a及び負極端子18bは、回路基板40との接続部分を除いて図示しない絶縁性絶縁シートにより被覆されている。
回路基板40は、板状の電池セル20のトップ部に配置され、電池素子21の正極端子18a及び負極端子18bに接続されている。回路基板40には、例えば図示しない温度検出素子、ヒューズ及び熱感抵抗素子が実装されている。また、回路基板40には、電子機器の機器本体と接続されるフレキシブル回路基板43が接続されている。
トップホルダ11は、電池セル20のトップ部の端部に装着されている。トップホルダ11は、例えば電池セル20のトップ部の端部に配置された状態で、電池セル20とともにラミネートシート30により包み込まれて固定される。
ラミネートシート30は、略矩形状であり、電池セル20を包み込むようにして電池セル20に貼り付けられる。ラミネートシート30は、接着層を介して電池セル20の周囲に貼り付けられる。ラミネートシート30は、電池セル20を保護するための保護シートであり、樹脂製のラミネートシートに比べて高い強度を有していてもよい。これにより、外部の衝撃から電池セル20を保護することができる。ラミネートシート30は、例えば硬質アルミニウム層の両面に電気絶縁性の樹脂層を積層した積層体であってもよい。樹脂層は、例えばPET(Polyethylene Terephthalate)樹脂からなる層であってよい。
本実施形態に係る電池パック10において、トップホルダ11及びボトムホルダ13に形成された衝撃吸収構造について説明する。
ここまで、本実施形態に係る電池パック10の構成例を説明したが、本実施形態に係る電池パック10のトップホルダ11及びボトムホルダ13の衝撃吸収構造は上記の例に限られない。以下、トップホルダ11及びボトムホルダ13の衝撃吸収構造の変形例を説明する。
図8は、第1の変形例に係るボトムホルダ13Aを示す模式図である。第1の変形例に係るボトムホルダ13Aでは、上記実施形態で説明したボトムホルダ13の弾性変形部155と第2の部材153との間のスペースに樹脂材料157が充填されている。かかる樹脂材料157は、衝撃吸収度合を調節する調節部として機能する。
図9は、第2の変形例に係るボトムホルダ13Bを示す模式図である。第2の変形例に係るボトムホルダ13Bは、上記実施形態で説明したボトムホルダ13の第1の部材151が省略され、第2の部材(ベース部材)153に弾性変形部155が設けられたものである。第2の変形例に係るボトムホルダ13Bは、第1の部材151が省略されている分、ボトムホルダ13Bの高さ(図示の上下方向の長さ)が小さくなって、電池パック10の大型化をより抑制することができる。
図10は、第3の変形例に係るトップホルダ11Aを示す模式図である。第3の変形例に係るトップホルダ11Aは、第1の部材161と第2の部材163との間に設けられる弾性変形部165が上記実施形態で説明したボトムホルダ13の弾性変形部155と異なっている。第3の変形例に係るトップホルダ11Aでは、第1の部材161及び第2の部材163が、左右の両端側においてそれぞれ弾性変形部165a,165bにより連結されている。
(1)電池素子を含む電池セルと、前記電池素子の端部に面して設けられた少なくとも一つのホルダと、前記ホルダに形成された衝撃吸収構造と、を備えた、電池パック。
(2)前記衝撃吸収構造は、前記ホルダに設けられた弾性変形部を含む、前記(1)に記載の電池パック。
(3)前記ホルダは、前記電池素子の端部から離れる方向に沿って配置された第1の部材及び第2の部材と、前記第1の部材及び前記第2の部材の間に設けられた前記弾性変形部と、を有する、前記(2)に記載の電池パック。
(4)前記ホルダは、ベース部材と、前記ベース部材よりも前記電池セルの端部側に設けられた前記弾性変形部と、を有する、前記(2)に記載の電池パック。
(5)前記衝撃吸収構造は、衝撃吸収度合を調節する調節部を有する、前記(2)~(4)のいずれか1項に記載の電池パック。
(6)前記電池素子は、電極層が巻回されて構成された巻回型の電池素子であり、前記ホルダは、前記巻回された電極層の幅方向の端部の少なくとも一つに面して設けられる、前記(1)~(5)のいずれか1項に記載の電池パック。
(7)前記電池素子は、電極層が積層されて構成された積層型の電池素子であり、前記ホルダは、前記電極層の四方のエッジの少なくとも一つに面して設けられる、前記(1)~(5)のいずれか1項に記載の電池パック。
(8)前記電池パックは、前記電池セルの周囲に巻き付けられた保護シートを備え、前記ホルダは、前記巻き付けられた保護シートの幅方向の端部側に設けられる、前記(1)~(7)のいずれか1項に記載の電池パック。
(9)電池パックを備えた電子機器であって、前記電池パックは、電池素子を含む電池セルと、前記電池素子の端部に面して設けられた少なくとも一つのホルダと、前記ホルダに形成された衝撃吸収構造と、を備えた、電子機器。
11 トップホルダ
13 ボトムホルダ
20 電池セル
21 電池素子
30 ラミネートシート(保護シート)
100 電子機器
151 第1の部材
153 第2の部材
155 弾性変形部
157 調節部(樹脂材料)
Claims (9)
- 電池素子を含む電池セルと、
前記電池素子の端部に面して設けられた少なくとも一つのホルダと、
前記ホルダに形成された衝撃吸収構造と、
を備えた、電池パック。 - 前記衝撃吸収構造は、前記ホルダに設けられた弾性変形部を含む、請求項1に記載の電池パック。
- 前記ホルダは、
前記電池素子の端部から離れる方向に沿って配置された第1の部材及び第2の部材と、
前記第1の部材及び前記第2の部材の間に設けられた前記弾性変形部と、
を有する、請求項2に記載の電池パック。 - 前記ホルダは、
ベース部材と、
前記ベース部材よりも前記電池セルの端部側に設けられた前記弾性変形部と、
を有する、請求項2に記載の電池パック。 - 前記衝撃吸収構造は、衝撃吸収度合を調節する調節部を有する、請求項2に記載の電池パック。
- 前記電池素子は、電極層が巻回されて構成された巻回型の電池素子であり、
前記ホルダは、前記巻回された電極層の幅方向の端部の少なくとも一つに面して設けられる、請求項1に記載の電池パック。 - 前記電池素子は、電極層が積層されて構成された積層型の電池素子であり、
前記ホルダは、前記電極層の四方のエッジの少なくとも一つに面して設けられる、請求項1に記載の電池パック。 - 前記電池パックは、前記電池セルの周囲に巻き付けられた保護シートを備え、
前記ホルダは、前記巻き付けられた保護シートの幅方向の端部側に設けられる、請求項1に記載の電池パック。 - 電池パックを備えた電子機器であって、
前記電池パックは、
電池素子を含む電池セルと、
前記電池素子の端部に面して設けられた少なくとも一つのホルダと、
前記ホルダに形成された衝撃吸収構造と、
を備えた、電子機器。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18914761.4A EP3739656B1 (en) | 2018-04-10 | 2018-12-27 | Battery pack and electronic device |
| US17/044,335 US12237524B2 (en) | 2018-04-10 | 2018-12-27 | Battery pack and electronic device |
| CN201880092110.1A CN111989796B (zh) | 2018-04-10 | 2018-12-27 | 电池组和电子装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-075118 | 2018-04-10 | ||
| JP2018075118A JP7310096B2 (ja) | 2018-04-10 | 2018-04-10 | 電池パック及び電子機器 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019198279A1 true WO2019198279A1 (ja) | 2019-10-17 |
Family
ID=68163542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2018/048115 Ceased WO2019198279A1 (ja) | 2018-04-10 | 2018-12-27 | 電池パック及び電子機器 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12237524B2 (ja) |
| EP (1) | EP3739656B1 (ja) |
| JP (1) | JP7310096B2 (ja) |
| CN (1) | CN111989796B (ja) |
| WO (1) | WO2019198279A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024521547A (ja) * | 2022-01-13 | 2024-06-03 | エルジー エナジー ソリューション リミテッド | 衝撃吸収機能を備えた電池パックアセンブリー、並びにその製造装置及び製造方法 |
| EP4195386A4 (en) * | 2020-08-07 | 2024-12-18 | Eagle Industry Co., Ltd. | ELECTRONIC DEVICE |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7350419B2 (ja) * | 2020-08-05 | 2023-09-26 | エルジー エナジー ソリューション リミテッド | 電池モジュール、それを含む電池パックおよび電池モジュールの運搬方法 |
| KR102743831B1 (ko) * | 2020-12-03 | 2024-12-16 | 주식회사 엘지에너지솔루션 | 배터리 팩, 전력 저장 장치, 및 자동차 |
| US11394078B1 (en) | 2021-05-13 | 2022-07-19 | Beta Air, Llc | Battery pack for failure safety |
| KR102923998B1 (ko) * | 2021-12-21 | 2026-02-09 | 주식회사 엘지에너지솔루션 | 충격 흡수 기능을 구비한 전지 팩 어셈블리 및 이를 포함하는 디바이스 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000173641A (ja) | 1998-11-30 | 2000-06-23 | Sony Corp | 非水電解質電池 |
| JP2002343322A (ja) * | 2001-05-15 | 2002-11-29 | Fuji Photo Film Co Ltd | レンズ付きフイルムユニット用防水型電池 |
| JP2007048725A (ja) * | 2005-08-12 | 2007-02-22 | Sony Corp | 二次電池 |
| JP2008235170A (ja) * | 2007-03-23 | 2008-10-02 | Nec Tokin Corp | リチウムイオン二次電池パック |
| JP2009170417A (ja) * | 2008-01-14 | 2009-07-30 | Samsung Sdi Co Ltd | バッテリパック |
| JP2013026090A (ja) * | 2011-07-23 | 2013-02-04 | Toyota Industries Corp | 電池パック |
| JP2016091991A (ja) * | 2014-10-31 | 2016-05-23 | 株式会社豊田自動織機 | 電池モジュール |
| WO2016189745A1 (ja) * | 2015-05-28 | 2016-12-01 | 三菱電機株式会社 | バッテリーケース、バッテリーモジュールおよびバッテリーモジュールの製造方法 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100614390B1 (ko) | 2004-09-06 | 2006-08-21 | 삼성에스디아이 주식회사 | 권취형 전극 조립체와 이를 구비하는 리튬 이온 이차 전지및 이의 제조 방법 |
| CN101615699B (zh) * | 2005-01-21 | 2012-08-08 | 索尼株式会社 | 电池组件 |
| KR100883920B1 (ko) * | 2006-01-17 | 2009-02-18 | 주식회사 엘지화학 | 무용접 접촉 연결방식의 보호회로 모듈 및 그것을 포함하는전지팩 |
| KR100821857B1 (ko) * | 2006-10-23 | 2008-04-15 | 주식회사 엘지화학 | 이차전지 팩 |
| JP4858510B2 (ja) | 2008-08-12 | 2012-01-18 | ソニー株式会社 | 電池パック |
| US9048477B2 (en) * | 2009-09-09 | 2015-06-02 | Samsung Sdi Co., Ltd. | Battery pack |
| JP2011090883A (ja) * | 2009-10-22 | 2011-05-06 | Sanyo Electric Co Ltd | 電池パック |
| US9818990B2 (en) | 2010-08-27 | 2017-11-14 | Samsung Sdi Co., Ltd. | Battery pack with shock absorber |
| US20120261206A1 (en) * | 2010-11-30 | 2012-10-18 | Shunsuke Yasui | Battery block, battery module, and battery pack arrangement structure |
| JP2012216332A (ja) * | 2011-03-31 | 2012-11-08 | Icom Inc | 電池受けの端子構造 |
| KR101275813B1 (ko) * | 2011-07-12 | 2013-06-18 | 삼성에스디아이 주식회사 | 배터리 팩 조립체 |
| WO2013171205A1 (de) * | 2012-05-18 | 2013-11-21 | Bayerische Motoren Werke Aktiengesellschaft | Kühlvorrichtung für eine fahrzeugbatterie, fahrzeugbatteriebaugruppe und verfahren zur herstellung einer kühlvorrichtung |
| DE102012013977A1 (de) * | 2012-07-16 | 2014-01-16 | Li-Tec Battery Gmbh | Gehäusebaugruppe, Sekundärbatterie mit wenigstens zwei Sekundärzellen und dieser Gehäusebaugruppe, sowie Verfahren zum Herstellen der Gehäusebaugruppe |
| JP2015232941A (ja) * | 2014-06-09 | 2015-12-24 | 株式会社Gsユアサ | 蓄電素子、及び蓄電素子の製造方法 |
-
2018
- 2018-04-10 JP JP2018075118A patent/JP7310096B2/ja active Active
- 2018-12-27 WO PCT/JP2018/048115 patent/WO2019198279A1/ja not_active Ceased
- 2018-12-27 CN CN201880092110.1A patent/CN111989796B/zh active Active
- 2018-12-27 EP EP18914761.4A patent/EP3739656B1/en active Active
- 2018-12-27 US US17/044,335 patent/US12237524B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000173641A (ja) | 1998-11-30 | 2000-06-23 | Sony Corp | 非水電解質電池 |
| JP2002343322A (ja) * | 2001-05-15 | 2002-11-29 | Fuji Photo Film Co Ltd | レンズ付きフイルムユニット用防水型電池 |
| JP2007048725A (ja) * | 2005-08-12 | 2007-02-22 | Sony Corp | 二次電池 |
| JP2008235170A (ja) * | 2007-03-23 | 2008-10-02 | Nec Tokin Corp | リチウムイオン二次電池パック |
| JP2009170417A (ja) * | 2008-01-14 | 2009-07-30 | Samsung Sdi Co Ltd | バッテリパック |
| JP2013026090A (ja) * | 2011-07-23 | 2013-02-04 | Toyota Industries Corp | 電池パック |
| JP2016091991A (ja) * | 2014-10-31 | 2016-05-23 | 株式会社豊田自動織機 | 電池モジュール |
| WO2016189745A1 (ja) * | 2015-05-28 | 2016-12-01 | 三菱電機株式会社 | バッテリーケース、バッテリーモジュールおよびバッテリーモジュールの製造方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3739656A4 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4195386A4 (en) * | 2020-08-07 | 2024-12-18 | Eagle Industry Co., Ltd. | ELECTRONIC DEVICE |
| JP2024521547A (ja) * | 2022-01-13 | 2024-06-03 | エルジー エナジー ソリューション リミテッド | 衝撃吸収機能を備えた電池パックアセンブリー、並びにその製造装置及び製造方法 |
| JP7652495B2 (ja) | 2022-01-13 | 2025-03-27 | エルジー エナジー ソリューション リミテッド | 衝撃吸収機能を備えた電池パックアセンブリー、並びにその製造装置及び製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3739656B1 (en) | 2025-07-30 |
| CN111989796B (zh) | 2022-12-20 |
| JP7310096B2 (ja) | 2023-07-19 |
| US12237524B2 (en) | 2025-02-25 |
| CN111989796A (zh) | 2020-11-24 |
| EP3739656A1 (en) | 2020-11-18 |
| EP3739656A4 (en) | 2021-03-10 |
| JP2019186016A (ja) | 2019-10-24 |
| US20210083348A1 (en) | 2021-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019198279A1 (ja) | 電池パック及び電子機器 | |
| KR101040875B1 (ko) | 이차전지 | |
| CN103490034B (zh) | 可再充电电池 | |
| US10553905B2 (en) | Battery cell of novel structure with improved safety | |
| CN104160684A (zh) | 便携式终端设备 | |
| KR102234704B1 (ko) | 이차전지 | |
| KR102018692B1 (ko) | 이차 전지 및 이차 전지 제조 방법 | |
| JP2020173900A (ja) | ラミネート型電池 | |
| JP3579618B2 (ja) | 電池パック | |
| US20170040634A1 (en) | Secondary battery | |
| KR102211370B1 (ko) | 이차전지 | |
| CN114361559A (zh) | 电池 | |
| US9123933B2 (en) | Rechargeable battery pack | |
| JP2019075358A (ja) | ラミネート型電池 | |
| JP6288721B2 (ja) | 組電池 | |
| KR20140061084A (ko) | 케이스 보강 구조를 포함하는 전지팩 | |
| JP2001307704A (ja) | フィルムパッケージ電池の固定構造 | |
| US20230163436A1 (en) | Electronic device | |
| CN223321345U (zh) | 一种电池及用电装置 | |
| KR20140098480A (ko) | 이차전지 | |
| JP2020521306A (ja) | 離型紙カバーを含む電池パック | |
| US20140255731A1 (en) | Rechargeable battery pack | |
| CN108933204A (zh) | 电子设备 | |
| JP2014011096A (ja) | 非水電解液二次電池 | |
| CN119108718A (zh) | 一种电池及用电装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18914761 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2018914761 Country of ref document: EP Effective date: 20200810 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWG | Wipo information: grant in national office |
Ref document number: 17044335 Country of ref document: US |
|
| WWG | Wipo information: grant in national office |
Ref document number: 2018914761 Country of ref document: EP |