WO2022224660A1 - 電動工具用電池パック、及び電動工具 - Google Patents
電動工具用電池パック、及び電動工具 Download PDFInfo
- Publication number
- WO2022224660A1 WO2022224660A1 PCT/JP2022/012696 JP2022012696W WO2022224660A1 WO 2022224660 A1 WO2022224660 A1 WO 2022224660A1 JP 2022012696 W JP2022012696 W JP 2022012696W WO 2022224660 A1 WO2022224660 A1 WO 2022224660A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- housing
- battery pack
- power tool
- space
- Prior art date
Links
- 239000011358 absorbing material Substances 0.000 claims abstract description 20
- 230000002745 absorbent Effects 0.000 claims description 41
- 239000002250 absorbent Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 26
- 230000009970 fire resistant effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 120
- 238000005192 partition Methods 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 229920006015 heat resistant resin Polymers 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229920006127 amorphous resin Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229920006038 crystalline resin Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/247—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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
-
- 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
Definitions
- the present disclosure generally relates to power tool battery packs and power tools. More specifically, the present disclosure relates to a power tool battery pack including battery cells, and a power tool.
- Patent Literature 1 discloses a battery pack in which a battery case is provided with a valve portion.
- the valve portion opens when the internal pressure of the battery case when gas is generated from the secondary battery cell exceeds a predetermined internal pressure value. Therefore, the valve portion can release the gas to the outside in the unlikely event that gas is generated from the secondary battery cell.
- the battery pack described in Patent Document 1 can release gas inside the battery case (housing) to the outside through the valve portion.
- the battery case since the battery case has the valve portion, there is a problem that the structure of the battery pack becomes complicated.
- An object of the present disclosure is to provide a battery pack for an electric power tool and an electric power tool that can reduce the concentration of gas inside the housing with a simpler structure.
- a power tool battery pack includes a battery cell, a housing, a gas absorbent, a side space, and an electrode side space.
- the battery cell has an end surface and a side surface, and an electrode is provided on the end surface.
- the housing accommodates the battery cells.
- the gas absorbent material absorbs gas.
- the side space is a space sandwiched between the side surface and the housing.
- the electrode-side space is a space sandwiched between the end surface and the housing.
- the gas absorbing material is arranged in at least one of the side space and the space sandwiched between the intervening member provided in the electrode-side space and the housing inside the housing.
- a power tool includes the power tool battery pack and the power tool main body.
- the power tool main body operates with power supplied from the power tool battery pack.
- FIG. 1 is an external perspective view of a power tool battery pack according to one embodiment.
- FIG. 2 is an exploded perspective view for explaining the configuration of the electric tool battery pack of the same.
- FIG. 3 is a sectional view taken along the line AA of FIG. 1 in the electric tool battery pack of the same.
- FIG. 4 is a cross-sectional view taken along the line BB of FIG. 1 in the electric tool battery pack of the same.
- FIG. 5 is a sectional view taken along the line CC of FIG. 1 in the electric tool battery pack of the same. 6 is a partially enlarged view of FIG. 4.
- FIG. FIG. 7 is an explanatory diagram for explaining a gap space provided in the gas absorbing material in the electric power tool battery pack of the same.
- FIG. 8 is a configuration diagram showing a schematic configuration of an electric power tool provided with the electric power tool battery pack of the same.
- FIG. 9 is a cross-sectional view taken along the line AA of FIG. 1 in a power tool battery pack according to a modification of the same.
- Embodiments of the present disclosure will be described below.
- the following embodiments are merely examples of various embodiments of the present disclosure.
- the embodiments described below can be modified in various ways according to the design, etc., as long as the object of the present disclosure can be achieved.
- 1 to 9 described in the following embodiments are schematic diagrams, and the ratio of the size and thickness of each component in the diagrams does not necessarily reflect the actual dimensional ratio. is not limited.
- FIG. 1 An overview of a power tool battery pack 1 (hereinafter referred to as battery pack 1) according to the present embodiment will be described below with reference to FIGS. 1, 2, 5, and 9.
- FIG. 1 An overview of a power tool battery pack 1 (hereinafter referred to as battery pack 1) according to the present embodiment will be described below with reference to FIGS. 1, 2, 5, and 9.
- FIG. 1 An overview of a power tool battery pack 1 (hereinafter referred to as battery pack 1) according to the present embodiment will be described below with reference to FIGS. 1, 2, 5, and 9.
- the battery pack 1 is a power storage device for supplying electric power to the power tool main body 2 .
- the battery pack 1 includes a battery cell 11, a housing 12, a gas absorbent 13, a side space S1, and an electrode side space S2, as shown in FIGS.
- the battery cell 11 has an end face 111 and a side face 112, and an electrode 113 is provided on the end face 111.
- the battery cell 11 is a rechargeable secondary battery.
- the battery cell 11 is, for example, a lithium ion battery, a lead storage battery, an alkaline storage battery, a nickel metal hydride storage battery, or the like.
- the housing 12 accommodates the battery cells 11 .
- the housing 12 is a casing having a substantially rectangular parallelepiped shape, as shown in FIG.
- the housing 12 is made of synthetic resin, for example.
- the gas absorbent material 13 absorbs gas.
- Gas is combustible gas, for example.
- the gas absorbent material 13 is formed from a resin mixture containing a heat resistant resin and a gas absorbent material.
- the heat-resistant resin is an amorphous resin having a glass transition temperature of 200° C. or higher, particularly 300° C. or higher.
- the heat-resistant resin may be a crystalline resin having a glass transition temperature of 200° C. or higher and having no melting point or a melting point of 250° C. or higher.
- the gas-absorbing material is, for example, an inorganic porous material that is highly absorbent of hydrocarbon-based gases.
- the side space S1 is a space sandwiched between the side 112 of the battery cell 11 and the housing 12, as shown in FIG.
- the electrode-side space S ⁇ b>2 is a space sandwiched between the end surface 111 of the battery cell 11 and the housing 12 .
- the gas absorbing material 13 is divided into a side space S1 (see FIG. 5) and a space (see FIG. 9) sandwiched between the intervening member 14 provided in the electrode-side space S2 and the housing 12. placed on at least one side.
- the gas is absorbed by the gas absorbing material 13 provided inside the housing 12 .
- fire resistance means a property that is resistant to heat and is difficult to burn.
- the battery pack 1 of the present embodiment has the advantage of being able to reduce the gas concentration inside the housing 12 with a simpler structure.
- the battery pack 1 is a DC power supply that supplies electric power for driving the motor 3, which will be described later, and includes a rechargeable secondary battery or the like.
- the longitudinal direction of the housing 12 (the X direction in FIG. 1) is defined as the front-rear direction.
- the surface on which the slide button 123 is provided as viewed from the surface on which the slide button 123 (to be described later) is not provided is defined as the front.
- the surface side on which the slide button 123 is not provided when viewed from the surface on which the slide button 123 is provided is defined as the rear.
- the lateral direction of the housing 12 (the Y direction in FIG. 1) is defined as the lateral direction.
- An end face 111a side which will be described later, is defined as right, and an end face 111b side, as viewed from end face 111a, is defined as left (see FIG. 2).
- the height direction of the housing 12 (the Z direction in FIG. 1) is defined as the vertical direction.
- the first housing 121 side which will be described later, is defined as the top, and the second housing 122 side, when viewed from the first housing 121, is defined as the bottom.
- these regulations are not meant to define the usage direction of the battery pack 1 .
- battery cell there are multiple battery cells 11 . More specifically, the number of battery cells 11 is ten (see FIG. 4).
- the plurality of battery cells 11 are arranged in parallel in the X-axis direction and the Z-axis direction as shown in FIG. 4 and housed inside the cell case 17 .
- the battery cell 11 of this embodiment is cylindrical, as shown in FIG.
- the battery cell 11 has, for example, circular end surfaces 111a and 111b on both sides in the axial direction (the Y direction in FIG. 2) of the battery cell 11 .
- Each of the end faces 111a on one side of the plurality of battery cells 11 is perpendicular to the Y direction, as shown in FIG.
- each of the other end faces 111b of the plurality of battery cells 11 is perpendicular to the Y direction. That is, the plurality of battery cells 11 have end faces 111a and 111b perpendicular to the Y direction on both sides in the Y direction.
- Electrodes 113 are provided on the end surfaces 111a and 111b of the battery cells 11, as shown in FIG.
- the electrode 113 is a portion where the battery cell 11 is electrically connected to the power tool main body 2 via a battery pack side connection portion 16 which will be described later.
- the electrode 113 is either a positive electrode into which current flows when the battery cell 11 is discharged or a negative electrode into which current flows when the battery cell 11 is discharged. More specifically, one of the end faces 111a and 111b of the battery cell 11 is provided with a positive electrode, and the other is provided with a negative electrode.
- the plurality of battery cells 11 may be arranged so that positive electrodes are arranged on all of the end faces 111a and negative electrodes are arranged on all of the end faces 111b.
- the plurality of battery cells 11 may be arranged such that the negative electrodes are arranged on all of the end faces 111a and the positive electrodes are arranged on all of the end faces 111b.
- the plurality of battery cells 11 may be arranged such that the positive electrodes and the negative electrodes are alternately arranged on the same side end faces 111a of the plurality of battery cells 11 for each adjacent end face 111a.
- the positive electrodes and the negative electrodes are arranged alternately for each adjacent end face 111b.
- the battery cell 11 has side surfaces 112 in the radial direction of the battery cell 11 (X direction and Z direction in FIG. 2).
- the side surface 112 is a surface of the battery cell 11 other than the end surfaces 111a and 111b. More specifically, the side surface 112 is a surface of the battery cell 11 on which the electrode 113 is not provided. Moreover, the side surface 112 of this embodiment connects the peripheral edge of the end surface 111a and the peripheral edge of the end surface 111b that are opposed in the Y direction.
- the cell case 17 stores a plurality of battery cells 11, as shown in FIGS. More specifically, the cell case 17 houses a plurality of battery cells 11 so as to keep the inter-cell distance at a preset distance.
- the cell-to-cell distance referred to here is the distance in the X direction or Z direction between two adjacent battery cells 11 among the plurality of battery cells 11 .
- the cell case 17 makes each of the plurality of battery cells 11 less susceptible to the heat generated by the adjacent battery cells 11 .
- the set distance is determined empirically, and if the set distance is 2.0 mm or more, the spread of fire in the battery cells 11 can be suppressed. In the present embodiment, the set distance is set to 3.0 mm, considering that the size of the battery pack 1 also increases as the set distance increases.
- the cell case 17 of this embodiment is composed of a first cell case 171 and second cell cases 172a and 172b.
- the battery cell 11 is sandwiched and fixed by one first cell case 171 and second cell cases 172a and 172b.
- the single first cell case 171 and the second cell cases 172a and 172b are made of, for example, a synthetic resin with excellent electrical insulation.
- the shape of the first cell case 171 is, as shown in FIG. 2, a rectangular parallelepiped having left and right surfaces that are substantially rectangular with rounded corners.
- the inside of the first cell case 171 is hollow, and the first cell case 171 stores a plurality of battery cells 11 .
- the left and right surfaces of the first cell case 171 are open, and the inside of the first cell case 171 is hollow.
- the inner surface of the cavity of the first cell case 171 is provided with a plurality of semi-cylindrical recesses. As a result, the first cell case 171 stores a plurality of battery cells 11 along a plurality of semi-cylindrical depressions, as shown in FIG.
- the upper surface of the first cell case 171 of the present embodiment has a plurality of semi-cylindrical projections along the plurality of semi-cylindrical depressions provided on the inner surface of the first cell case 171. 175a.
- the lower surface of the first cell case 171 of the present embodiment has a plurality of semi-cylindrical projections 175b along the plurality of semi-cylindrical depressions provided on the inner surface of the first cell case 171 .
- five protrusions 175a are arranged in the X direction on the upper surface of the first cell case 171
- five protrusions 175b are arranged in the X direction on the lower surface of the first cell case 171.
- the first cell case 171 is provided with partition walls 173a and 173b on its upper surface for holding a substrate 162, which will be described later.
- the partition walls 173a and 173b protrude upward.
- the partition wall portions 173 a and 173 b partition the space sandwiched between the side surfaces 112 of the plurality of battery cells 11 and the inner surface of the housing 12 .
- the rear surface of the first cell case 171 has a vent hole 174 that connects the second side space S12, which will be described later, and the gas vent hole 124a, which will be described later.
- the second cell cases 172a and 172b are substantially rectangular parallelepipeds. Each of the upper and lower surfaces of the second cell case 172a has a housing surface 1721 for housing the battery cell 11 therein.
- the housing surface 1721 is curved along the side surface 112 of the battery cell 11 .
- five housing surfaces 1721 are arranged in the X direction on each of the upper and lower surfaces of the second cell case 172a. That is, the second cell case 172a has ten housing surfaces 1721.
- the second cell case 172 a accommodates one battery cell 11 on each of the accommodation surfaces 1721 . That is, the second cell case 172a of the present embodiment accommodates ten battery cells 11 on the ten accommodation surfaces 1721 of the second cell case 172a.
- each of the upper and lower surfaces of the second cell case 172b has a housing surface 1721 (see FIG. 2).
- five housing surfaces 1721 are arranged in the X direction on each of the upper and lower surfaces of the second cell case 172b. That is, the second cell case 172b has ten housing surfaces 1721.
- the second cell case 172b accommodates one battery cell 11 in each accommodation surface 1721 . That is, the second cell case 172b of this embodiment accommodates ten battery cells 11 on the ten accommodation surfaces 1721 of the second cell case 172a.
- the second cell cases 172a, 172b keep the inter-cell distance at a preset distance. More specifically, the housing surfaces 1721 of the second cell cases 172a and 172b house the battery cells 11 so as to keep the inter-cell distance at a preset distance.
- the second cell cases 172 a and 172 b are housed inside the first cell case 171 together with the plurality of battery cells 11 .
- the second cell case 172 a is arranged on the right side inside the first cell case 171 .
- the second cell case 172 b is arranged on the left side inside the first cell case 171 .
- the housing 12 accommodates the battery cells 11 . More specifically, the housing 12 accommodates the battery cells 11 housed in the cell case 17, as shown in FIGS. 3-5.
- the housing 12 of this embodiment has a first housing 121, a second housing 122, a slide button 123, gas vent holes 124a and 124b, and a fixing screw 125, as shown in FIG. Gas vent holes 124a and 124b discharge gas to the outside.
- the total number of gas vent holes 124a and 124b in this embodiment is two, the number is not limited to two. For example, only one of the gas vent holes 124a and 124b may be provided, or the total number of gas vent holes may be three or more.
- the first housing 121 has a first bottom portion 1211, a fitting portion 1212, and a first side portion 1213, as shown in FIG.
- the shape of the first bottom portion 1211 is substantially rectangular.
- the thickness direction of the first bottom portion 1211 extends along the vertical direction.
- the first bottom portion 1211 has a gas vent hole 124a at its rear portion.
- the first bottom part 1211 has a fitting part 1212 at the front part.
- the fitting portion 1212 fits with the power tool main body 2 described later. As a result, the battery pack 1 is attached to the power tool body 2 .
- the fitting portion 1212 is provided with a groove (not shown) for fitting with the power tool main body 2 .
- the fitting portion 1212 is provided with a through-hole in the central portion through which a connection terminal 163 (to be described later) passes.
- a first side portion 1213 protrudes from the first bottom portion 1211 . More specifically, the first side portion 1213 protrudes from the periphery of the first bottom portion 1211 . The first side portion 1213 protrudes downward from the first bottom portion 1211 .
- the second housing 122 has a second bottom portion 1221 and a second side portion 1222, as shown in FIG.
- the shape of the second bottom portion 1221 is substantially rectangular.
- the thickness direction of the second bottom portion 1221 extends along the vertical direction.
- a second side portion 1222 protrudes from the second bottom portion 1221 . More specifically, the second side portion 1222 protrudes from the periphery of the second bottom portion 1221 .
- the second side portion 1222 protrudes upward from the second bottom portion 1221 .
- Second side 1222 joins first side 1213 .
- the second side portion 1222 has a gas vent hole 124b on the front side.
- the slide button 123 is arranged on at least one of the first side portion 1213 and the second side portion 1222 .
- the slide button 123 is positioned in front of the first side portion 1213 as shown in FIG.
- the fixing screw 125 fixes the first housing 121 and the second housing 122 . More specifically, fixing screw 125 secures first housing 121 and second housing 122 such that first side 1213 and second side 1222 remain joined together. Although there are four fixing screws 125 in this embodiment (see FIG. 3), the number is not limited to four.
- the battery pack 1 as shown in FIG.
- An electrode-side space S2 which is a sandwiched space, is provided.
- the side space S ⁇ b>1 is a space sandwiched between the side surfaces 112 of the plurality of battery cells 11 and the inner surface of the housing 12 .
- the first side space S11 is a space arranged above the plurality of battery cells 11 among the plurality of side spaces S1. More specifically, since the battery cells 11 are housed in the first cell case 171, the first side space S11 is a space sandwiched between the upper surface of the first cell case 171 and the first housing 121. is.
- the battery pack 1 of the present embodiment includes, as the first side space S11, three first side spaces S11a, S11b, and S11c partitioned by partition walls 173a and 173b. Therefore, each of the first side spaces S11a, S11b, and S11c has a smaller spatial volume than the second side space S12. A more detailed description will be given.
- the first side space S11a is a space surrounded by a portion of the first cell case 171 located to the left of the partition wall portion 173a, the first bottom portion 1211 of the first housing 121, and the partition wall portion 173a.
- the first side space S11b is surrounded by a portion of the first cell case 171 located on the right side of the partition wall portion 173b, the first bottom portion 1211 of the first housing 121, and the partition wall portion 173b.
- the first side space S11c includes a central portion located between the partition wall portion 173a and the partition wall portion 173b in the first cell case 171, a fitting portion 1212 of the first housing 121, the partition wall portion 173a, and a partition wall. It is a space surrounded by the wall portion 173b.
- the second side space S12 is a space arranged below the plurality of battery cells 11 among the plurality of side spaces S1. More specifically, since the battery cells 11 are housed in the first cell case 171, as shown in FIG. It is a space sandwiched between.
- the third side space S13 is a space arranged in front of the plurality of battery cells 11 among the plurality of side spaces S1. More specifically, since the battery cells 11 are housed in the first cell case 171, as shown in FIGS. It is a space sandwiched between the first housing 121 and the second housing 122 .
- the fourth side space S14 is a space arranged behind the plurality of battery cells 11 among the plurality of side spaces S1. More specific description will be given.
- the battery cells 11 are housed by a first cell case 171 , and the first cell case 171 has ventilation holes 174 . Therefore, as shown in FIGS. 3 and 4, the fourth side space S14 is sandwiched between the rear surface of the first cell case 171, the first housing 121 and the second housing 122, and the vent hole 174 is arranged. space.
- the electrode-side space S ⁇ b>2 in this embodiment is a space sandwiched between either one of the end surfaces 111 a and 111 b and the inner surface of the housing 12 .
- the electrode-side space S2 is composed of a first electrode-side space S21 and a second electrode-side space S22.
- the first electrode-side space S21 is a space sandwiched between a plurality of end surfaces 111a provided with the electrodes 113 and the first housing 121 or the second housing 122 .
- the second electrode-side space S22 is a space sandwiched between the end surfaces 111b provided with the electrodes 113 and the first housing 121 or the second housing 122 .
- the gas absorbing material 13 is arranged inside the housing 12 in at least one of the side space S1 and the space sandwiched between the intervening member 14 provided in the electrode-side space S2 and the housing 12. .
- the gas absorbent material 13 is arranged in the side space S1 as shown in FIG. More specifically, the gas absorbent material 13 is arranged at least in a space having the largest spatial volume among the plurality of side spaces S1. There is more gas in a space with a larger spatial volume than in a space with a smaller spatial volume. Therefore, a gas absorbent placed in a space having a large spatial volume can efficiently absorb gas.
- the space having the largest spatial volume among the plurality of side spaces S1 is the second side space S12.
- the battery pack 1 further has a gas discharge route R1 (see FIG. 6) that guides gas to the gas vent holes 124a and 124b.
- the gas absorbent 13 is arranged in the gas discharge route R1.
- the gas absorbent material 13 of the present embodiment is arranged in the side space S1 of the side space S1 and the electrode side space S2, which are the gas discharge route R1. More specifically, the gas absorbent material 13 of this embodiment is arranged in the second side space S12 as shown in FIG.
- the gas absorbent 13 may be arranged in the electrode-side space S2 of the side-side space S1 and the electrode-side space S2, which are the gas discharge route R1.
- the gas discharge route R1 has a narrowed portion R11 where the gas absorbent 13 is arranged and the route through which the gas passes is narrowed. More specifically, as shown in FIG. 6, the gas discharge path R1 of this embodiment includes a semi-cylindrical projecting portion 175b provided on the lower surface of the first cell case 171 and the second bottom portion 1221 of the second housing 122. , form a plurality of narrowed portions R11. At the constricted portion R11, the gas is pressed against the gas absorbent 13 at a higher pressure than at other portions of the gas discharge path R1. As a result, the gas absorbent 13 arranged in the constricted portion R11 absorbs more gas than the gas absorbent 13 arranged in other parts of the gas discharge path R1.
- the gas absorbent material 13 of this embodiment has a sheet shape. As shown in FIG. 7, the gas absorbing material 13 is arranged on the inner surface of the housing 12 by the fixing portion 193 so as to have a clearance space S3 between itself and the inner surface of the housing 12 . Since the gas can be absorbed even from the back surface of the sheet-like gas absorbent material 13 by the gap space S3, the gas can be efficiently absorbed.
- the fixing portion 193 is, for example, double-sided tape.
- the battery pack 1 further includes fire-resistant members 15 a and 15 b having higher fire resistance than the housing 12 .
- the fireproof members 15a and 15b are arranged in the electrode-side space S2, as shown in FIG.
- the shape of the fireproof members 15a and 15b of this embodiment is a substantially rectangular shape with rounded corners.
- the refractory members 15a, 15b are arranged near the electrodes 113 of the plurality of battery cells 11, as shown in FIG. More specifically, the fireproof members 15a are arranged between the end faces 111a of the plurality of battery cells 11 and the first side portion 1213 and the second side portion 1222 .
- the fireproof member 15b is arranged between the end faces 111b of the plurality of battery cells 11 and the first side portion 1213 and the second side portion 1222 .
- the fireproof members 15a and 15b make it difficult for the heat generated by the electrode 113 to be transmitted to the housing 12, the gas absorber 13, and the like, which are members of the battery pack 1.
- FIG. the fireproof members 15a and 15b are made of silica fiber, for example.
- the refractory members 15a and 15b may be made of a highly refractory metal such as stainless steel or alumina.
- the battery pack side connection portion 16 is electrically detachably connected to the main body side connection portion 21 of the electric power tool main body 2 and supplies electric power to the electric power tool main body 2 .
- the battery pack side connection portion 16 has metal plates 161a and 161b, a substrate 162, and a plurality of connection terminals 163, as shown in FIG.
- a plurality of connection terminals 163 are mounted on the substrate 162 .
- the substrate 162 of this embodiment is supported by partition walls 173a and 173b.
- Each of the plurality of connection terminals 163 is a portion that is detachably electrically connected to a plurality of terminals of the body-side connection portion 21 .
- the multiple connection terminals 163 include a power terminal 163a.
- the power terminal 163a is electrically connected to the electrodes 113 of the plurality of battery cells 11 via the metal plates 161a and 161b, and is a terminal for outputting electric power charged in the plurality of battery cells 11.
- the fire mesh 18a, 18b has a plurality of metal mesh sheet materials and a plurality of fiber sheet materials.
- the metal sheet material is made of, for example, stainless steel.
- the fiber sheet material is, for example, a ceramic fiber sheet or an alumina sheet.
- the fireproof mesh 18a is arranged on the inner surface of the gas vent hole 124a. More specifically, as shown in FIG. 4, the fireproof mesh 18a is arranged on the surface of the gas vent hole 124a on the battery cell 11 side.
- the fireproof mesh 18b is arranged on the inner surface of the gas vent hole 124b. More specifically, the fireproof mesh 18b is arranged on the surface of the gas vent hole 124b on the battery cell 11 side.
- the fireproof meshes 18a and 18b have the function of suppressing passage of flames.
- the total number of the fireproof meshes 18a and 18b of this embodiment is two, it is not limited to two. For example, only one of the fireproof meshes 18a and 18b may be used, or the total number of fireproof meshes may be three or more.
- the insulating tapes 191a and 191b are members that prevent the adjacent battery cells 11 from being electrically connected.
- the insulating tapes 191a and 191b are made of an insulating material.
- the shape of the insulating tapes 191a and 191b is, for example, a substantially rectangular shape with rounded corners.
- the insulating tape 191a has a plurality of connection holes 1911 (ten in FIG. 2) for electrically connecting the electrode 113 of the battery cell 11 and the metal plate 161a.
- the insulating tape 191b has a plurality of connection holes 1911 for electrically connecting the electrode 113 of the battery cell 11 and the metal plate 161b.
- FIG. 1 connection holes 1911 for electrically connecting the electrode 113 of the battery cell 11 and the metal plate 161b.
- the insulating tape 191a is attached to the end surface of the battery cell 11 so that the electrode 113 provided on the end surface 111a can pass through the connection hole 1911 and be electrically connected to the metal plate 161a. It is sandwiched between 111a and sheet metal 161a.
- the insulating tape 191b is placed between the end face 111b of the battery cell 11 and the metal plate 161b so that the electrode 113 provided on the end face 111b can pass through the connection hole 1911 and be electrically connected to the metal plate 161b. sandwiched between.
- the power tool 10 includes a battery pack 1 and a power tool main body 2, as shown in FIG.
- the power tool main body 2 operates with power supplied from the battery pack 1 .
- the power tool main body 2 includes a motor 3, a drive transmission section 4, an output shaft section 5, a chuck 6, a tip tool 7, a trigger 8, a control section 9, and a main body side connection section 21. ing.
- the motor 3 is a drive source that drives the tip tool 7.
- the battery pack 1 is detachably attached to the power tool main body 2 .
- the battery pack 1 is electrically connected to the body-side connection portion 21 provided on the power tool body 2 while attached to the power tool body 2 .
- the battery pack 1 supplies electric power to the power tool main body 2 via the main body side connecting portion 21 .
- the drive transmission section 4 reduces the speed of the output (driving force) of the motor 3 and outputs it to the output shaft section 5 .
- the output shaft portion 5 is a portion that is driven (rotated, for example) by the driving force output from the drive transmission portion 4 .
- the chuck 6 is fixed to the output shaft portion 5 and is a portion to which the tip tool 7 is detachably attached.
- the tip tool 7 (also referred to as a bit) is formed into a shape suitable for use, such as a screwdriver, socket, or drill. Among various kinds of tip tools 7, the tip tool 7 corresponding to the application is attached to the chuck 6 and used.
- the trigger 8 is an operation unit for operating the rotational speed of the motor 3.
- a trigger 8 can switch the motor 3 on or off. Further, the rotational speed of the output shaft portion 5 per unit time, that is, the rotational speed of the motor 3 can be adjusted by the operation amount of the trigger 8 .
- the control unit 9 drives or stops the motor 3 and controls the rotational speed of the motor 3 according to the operation input to the trigger 8 .
- the gas absorbent material 13 is arranged in the side space S1, and the fireproof members 15a and 15b are arranged in the electrode side space S2.
- the gas absorbing material 13 may be arranged in a space sandwiched between the housing 12 and the intervening member 14 provided in the electrode-side space S2 instead of being arranged in the side-side space S1. That is, the gas absorbing material 13 may be arranged in a space sandwiched between the intervening member 14 provided between the end surface 111 and the housing 12 and the inner surface of the housing 12 .
- the intervening member 14 is arranged between the plurality of end surfaces 111a and the first side portion 1213 or the second side portion 1222.
- the gas absorbent material 13 is arranged in a space sandwiched between the intervening member 14 and the first side portion 1213 or the second side portion 1222 .
- the intervening member 14 is arranged between the end faces 111 b and the first side portion 1213 or the second side portion 1222 .
- the gas absorbent material 13 is arranged in a space sandwiched between the intervening member 14 and the first side portion 1213 or the second side portion 1222 .
- the intervening member 14 is made of a fire-resistant material having higher fire resistance than the housing 12 .
- the intervening member 14 may be made of, for example, silica fibers, or may be made of a highly fire-resistant metal such as stainless steel.
- gas absorbing material 13 may be arranged in both the side space S1 and the space sandwiched between the intervening member 14 and the housing 12 provided in the electrode-side space S2.
- the second cell case 172 a has the same number of housing surfaces 1721 as the number of battery cells 11 .
- the second cell case 172a has eight housing surfaces 1721 .
- the shape of the battery cell 11 may be a rectangular parallelepiped. In this case, the battery cell 11 has, for example, a rectangular end surface. In addition, the shape of the battery cell 11 may be a pin type.
- the battery cell 11 of this embodiment has two end surfaces 111 as surfaces on which the electrodes 113 are provided.
- the battery cell 11 may have at least one or more end surfaces 111 as surfaces on which the electrodes 113 are provided.
- both the positive and negative electrodes 113 may be provided on the end surface 111a, and the electrode 113 may not be provided on the end surface 111b.
- the refractory member 15b and the intervening member 14, which make it difficult to conduct the heat generated by the electrode 113 are arranged only in the first electrode side space S21, and are arranged in the second electrode side space S22. It does not have to be placed.
- both the positive electrode and the negative electrode may be provided on the end surface 111b, and the electrode 113 may not be provided on the end surface 111a.
- the electrode 113 since the electrode 113 is not provided on the end surface 111a, the refractory member 15a and the intervening member 14, which make it difficult to conduct the heat generated by the electrode 113, are arranged only in the second electrode side space S22, and are arranged in the first electrode side space S21. It does not have to be placed.
- the battery cell 11 of the present embodiment has end faces 111 on both sides in the axial direction (the Y direction in FIG. 2) of the battery cell 11 as surfaces on which the electrodes 113 are provided.
- the direction in which the battery cell 11 has the surface on which the electrode 113 is provided is not limited.
- the battery cell 11 may have a surface on which the electrode 113 is provided in the radial direction of the battery cell 11 (the direction along the XZ plane in FIG. 2).
- the battery pack (1) includes a battery cell (11), a housing (12), a gas absorbent (13), a side space (S1), and an electrode side a space (S2);
- a battery cell (11) has an end face (111) and a side face (112), and an electrode (113) is provided on the end face (111).
- a housing (12) houses a battery cell (11).
- the gas absorbent (13) absorbs gas.
- the side space (S1) is a space sandwiched between the side surface (112) and the housing (12).
- the electrode-side space (S2) is a space sandwiched between the end face (111) and the housing (12).
- the gas absorbing material (13) is divided into a side space (S1) and a space sandwiched between the intervening member (14) provided in the electrode-side space (S2) and the housing (12). , at least one of
- the gas absorbent (13) is arranged in the side space (S1).
- the battery pack (1) according to the third aspect further includes fireproof members (15a, 15b) having higher fire resistance than the housing (12).
- the fireproof members (15a, 15b) are arranged in the electrode-side space (S2).
- the housing (12) can be prevented from directly contacting the electrode (113).
- the battery pack (1) according to the fourth aspect has a plurality of side spaces (S1).
- the gas absorbent material (13) is arranged in at least the space having the largest spatial volume among the plurality of side spaces (S1).
- the intervening member (14) is made of a fire resistant material with higher fire resistance than the housing (12).
- the housing (12) has gas vent holes (124a, 124b) for discharging gas to the outside.
- the battery pack (1) according to the sixth aspect further includes a gas discharge path (R1) that guides gas to the gas vent holes (124a, 124b).
- a gas absorbent (13) is arranged in the gas discharge route (R1).
- the gas absorbent (13) can efficiently absorb the gas passing through the gas discharge route (R1).
- the gas discharge path (R1) is narrowed at the location where the gas absorbent (13) is arranged. It has a constricted portion (R11).
- the gas absorbent (13) can efficiently absorb the gas passing through the gas discharge route (R1).
- the gas absorbent material (13) is sheet-like.
- the gas absorbent (13) can be arranged at any position inside the housing (12).
- the gas absorbent material (13) is arranged so as to have a clearance space (S3) between itself and the inner surface of the housing (12).
- gas can be absorbed also from the back surface of the gas absorbent material (13), so there is an advantage that gas can be efficiently absorbed.
- the gas is a combustible gas.
- the combustible gas can be discharged to the outside of the battery pack (1) while reducing the concentration of the combustible gas.
- An electric power tool (10) according to an eleventh aspect comprises the battery pack (1) according to any one of the first to tenth aspects and an electric power tool main body (2).
- the power tool main body (2) operates with power supplied from the battery pack (1).
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Computer Hardware Design (AREA)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
以下、本開示の実施形態について説明する。下記の実施形態は、本開示の様々な実施形態の例に過ぎない。また、下記の実施形態は、本開示の目的を達成できれば、設計等に応じて種々の変更は可能である。また、下記の実施形態において説明する図1~図9は、模式的な図であり、図中の各構成要素の大きさ及び厚さそれぞれの比が必ずしも実際の寸法比を反映しているとは限らない。
以下に、本実施形態に係る電動工具用電池パック1(以下、電池パック1とする)の概要について、図1、図2、図5、及び図9を参照して説明する。
(2-1)電池パック
以下に、本実施形態に係る電池パック1の詳細について、図1~図9を参照して説明する。
本実施形態では、電池セル11は複数ある。より具体的には、電池セル11の個数は、10個である(図4参照)。複数の電池セル11は、図4に示すようにX軸方向及びZ軸方向に並列に並べられており、セルケース17の内部に格納される。
セルケース17は、図2及び図4に示すように、複数の電池セル11を格納する。より詳細には、セルケース17は、セル間距離を事前に決められた設定距離に保つように、複数の電池セル11を格納する。ここでいうセル間距離は、複数の電池セル11のうち、隣り合う2つの電池セル11の間のX方向又はZ方向の距離である。その結果、複数の電池セル11のそれぞれは、セルケース17によって、隣り合う電池セル11の発熱の影響を受けにくくなる。また、設定距離は、経験的に決定され、設定距離が2.0mm以上であれば電池セル11の類焼を抑制することができる。本実施形態では、設定距離が大きくなるに伴い電池パック1のサイズも大きくなることを考慮し、設定距離を3.0mmとしている。
ハウジング12は、電池セル11を収容する。より詳細には、ハウジング12は、図3~図5に示すように、セルケース17に格納された電池セル11を収容する。本実施形態のハウジング12は、図2に示すように、第1ハウジング121と、第2ハウジング122と、スライドボタン123と、ガス抜き孔124a、124bと、固定ネジ125と、を有する。ガス抜き孔124a、124bは、ガスを外部へ排出する。なお、本実施形態のガス抜き孔124a、124bの総数は2個であるが、2個に限定されない。例えば、ガス抜き孔124a、124bのいずれか一方だけでもよいし、ガス抜き孔の総数が3個以上であってもよい。
ガス吸収材13は、上述した通り、ハウジング12の内部において、側面側空間S1と、電極側空間S2に設けられた介在部材14及びハウジング12に挟まれた空間と、の少なくとも一方に配置される。本実施形態では、ガス吸収材13は、図5に示すように、側面側空間S1に配置される。より詳細には、ガス吸収材13は、複数の側面側空間S1のうち、少なくとも最も大きい空間体積を有する空間に配置される。小さい空間体積を有する空間よりも大きい空間体積を有する空間には、より多くのガスが存在する。そのため、大きい空間体積を有する空間に配置されたガス吸収材は、ガスを効率よく吸収することができる。本実施形態において、複数の側面側空間S1のうち最も大きい空間体積を有する空間は、第2側面側空間S12である。
電池パック1は、ハウジング12よりも耐火性が高い耐火部材15a、15bを更に備える。耐火部材15a、15bは、図5に示すように、電極側空間S2に配置される。また、本実施形態の耐火部材15a、15bの形状は、略角丸長方形である。耐火部材15a、15bは、図3に示すように、複数の電池セル11の電極113の近くに配置される。より詳細には、耐火部材15aは、複数の電池セル11の端面111aと、第1側部1213及び第2側部1222と、の間に配置される。耐火部材15bは、複数の電池セル11の端面111bと、第1側部1213及び第2側部1222と、の間に配置される。耐火部材15a、15bは、電極113の発熱を、電池パック1が備える部材であるハウジング12及びガス吸収材13等へ伝わりにくくする。また、耐火部材15a、15bは、例えば、シリカ繊維で形成されている。なお、耐火部材15a、15bは、ステンレス鋼やアルミナなどの耐火性の高い金属であってもよい。
電池パック側接続部16は、電動工具本体2の本体側接続部21と電気的に着脱可能に接続し、電動工具本体2へ電力の供給を行う。電池パック側接続部16は、図2に示すように、板金161a、161bと、基板162と、複数の接続端子163と、を有する。基板162は、複数の接続端子163が実装されている。本実施形態の基板162は、仕切壁部173a、173bによって支えられている。複数の接続端子163はそれぞれ、本体側接続部21が有する複数の端子と着脱可能に電気的に接続する部分である。複数の接続端子163は、電源端子163aを含む。電源端子163aは、板金161a、161bを介して複数の電池セル11の電極113と電気的に接続されており、複数の電池セル11に充電された電力を出力する端子である。
防火メッシュ18a、18bは、複数の金属メッシュシート材と、複数の繊維シート材と、を有する。金属シート材は、例えば、ステンレス鋼材で形成されている。繊維シート材は、例えば、セラミック繊維シート、又は、アルミナシートである。
絶縁テープ191a、191bは、隣り合う電池セル11が電気的に接続することを防止する部材である。絶縁テープ191a、191bは、絶縁性を有する材料で形成されている。絶縁テープ191a、191bの形状は、例えば、略角丸長方形である。絶縁テープ191aは、電池セル11の電極113と、板金161aと、が電気的に接続するための複数の接続孔1911(図2では10個)を有する。同様に、絶縁テープ191bは、電池セル11の電極113と、板金161bと、が電気的に接続するための複数の接続孔1911を有する。本実施形態では、図3に示すように、端面111aに設けられている電極113が、接続孔1911を通り、板金161aと電気的に接続できるように、絶縁テープ191aは、電池セル11の端面111aと、板金161aと、の間に挟持される。同様に、端面111bに設けられている電極113が、接続孔1911を通り、板金161bと電気的に接続できるように、絶縁テープ191bは、電池セル11の端面111bと、板金161bと、の間に挟持される。
以下に、実施形態に係る電池パック1を備えた電動工具10の詳細な構成について、図8を参照して説明する。
上述の実施形態は、本開示の様々な実施形態の一つに過ぎない。上述の実施形態は、本開示の目的を達成できれば、設計等に応じて種々の変更が可能である。以下の変形例は、適宜組み合わせて実現されていてもよい。
以上述べたように、第1の態様に係る電池パック(1)は、電池セル(11)と、ハウジング(12)と、ガス吸収材(13)と、側面側空間(S1)と、電極側空間(S2)と、を備える。電池セル(11)は、端面(111)及び側面(112)を有し、端面(111)に電極(113)が設けられる。ハウジング(12)は、電池セル(11)を収容する。ガス吸収材(13)は、ガスを吸収する。側面側空間(S1)は、側面(112)と、ハウジング(12)と、に挟まれた空間である。電極側空間(S2)は、端面(111)と、ハウジング(12)と、に挟まれた空間である。ガス吸収材(13)は、ハウジング(12)の内部において、側面側空間(S1)と、電極側空間(S2)に設けられた介在部材(14)及びハウジング(12)に挟まれた空間と、の少なくとも一方に配置される。
1 電動工具用電池パック
11 電池セル
111 端面
112 側面
113 電極
12 ハウジング
124a、124b ガス抜き孔
13 ガス吸収材
14 介在部材
15a、15b 耐火部材
2 電動工具本体
S1 側面側空間
S2 電極側空間
S3 隙間空間
R1 ガス排出経路
R11 絞り部
Claims (11)
- 端面及び側面を有し、前記端面に電極が設けられる電池セルと、
前記電池セルを収容するハウジングと、
ガスを吸収するガス吸収材と、
前記側面と、前記ハウジングと、に挟まれた空間である側面側空間と、
前記端面と、前記ハウジングと、に挟まれた空間である電極側空間と、を備え、
前記ガス吸収材は、前記ハウジングの内部において、前記側面側空間と、前記電極側空間に設けられた介在部材及び前記ハウジングに挟まれた空間と、の少なくとも一方に配置される
ことを特徴とする電動工具用電池パック。 - 前記ガス吸収材は、前記側面側空間に配置される
ことを特徴とする請求項1に記載の電動工具用電池パック。 - 前記ハウジングよりも耐火性が高い耐火部材を更に備え、
前記耐火部材は、前記電極側空間に配置される
ことを特徴とする請求項2に記載の電動工具用電池パック。 - 前記側面側空間は、複数あり、
前記ガス吸収材は、前記複数の側面側空間のうち、少なくとも最も大きい空間体積を有する空間に配置される
ことを特徴とする請求項1~3のいずれか1項に記載の電動工具用電池パック。 - 前記介在部材は、前記ハウジングよりも耐火性が高い耐火材料で形成される
ことを特徴とする請求項1~4のいずれか1項に記載の電動工具用電池パック。 - 前記ハウジングは、前記ガスを外部へ排出するガス抜き孔を有し、
前記ガスを前記ガス抜き孔まで誘導するガス排出経路を更に備え、
前記ガス吸収材は、前記ガス排出経路に配置される
ことを特徴とする請求項1~5のいずれか1項に記載の電動工具用電池パック。 - 前記ガス排出経路は、前記ガス吸収材が配置される箇所において、前記ガスを通過させる経路が狭くなっている絞り部を有する
ことを特徴とする請求項6に記載の電動工具用電池パック。 - 前記ガス吸収材は、シート状となっている
ことを特徴とする請求項1~7のいずれか1項に記載の電動工具用電池パック。 - 前記ガス吸収材は、前記ハウジングの内面との間に隙間空間を備えるように配置される
ことを特徴とする請求項8に記載の電動工具用電池パック。 - 前記ガスは、可燃性ガスである
ことを特徴とする請求項1~9のいずれか1項に記載の電動工具用電池パック。 - 請求項1~10のいずれか1項に記載の電動工具用電池パックと、
前記電動工具用電池パックから供給される電力で動作する電動工具本体と、を備える
ことを特徴とする電動工具。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22791439.7A EP4329060A1 (en) | 2021-04-22 | 2022-03-18 | Battery pack for power tool, and power tool |
CN202280022148.8A CN117099248A (zh) | 2021-04-22 | 2022-03-18 | 电动工具电池组和电动工具 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021072892A JP2022167227A (ja) | 2021-04-22 | 2021-04-22 | 電動工具用電池パック、及び電動工具 |
JP2021-072892 | 2021-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022224660A1 true WO2022224660A1 (ja) | 2022-10-27 |
Family
ID=83722882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/012696 WO2022224660A1 (ja) | 2021-04-22 | 2022-03-18 | 電動工具用電池パック、及び電動工具 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4329060A1 (ja) |
JP (1) | JP2022167227A (ja) |
CN (1) | CN117099248A (ja) |
WO (1) | WO2022224660A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006228610A (ja) * | 2005-02-18 | 2006-08-31 | Densei Lambda Kk | 二次電池パック |
JP2008146963A (ja) * | 2006-12-08 | 2008-06-26 | Sony Corp | 非水電解質二次電池用セパレータ、非水電解質二次電池及び電池パック |
WO2012073432A1 (ja) * | 2010-12-03 | 2012-06-07 | パナソニック株式会社 | 電池パック |
WO2013069308A1 (ja) * | 2011-11-11 | 2013-05-16 | パナソニック株式会社 | 電池パック |
JP2016143507A (ja) | 2015-01-30 | 2016-08-08 | パナソニックIpマネジメント株式会社 | 電池パック |
-
2021
- 2021-04-22 JP JP2021072892A patent/JP2022167227A/ja active Pending
-
2022
- 2022-03-18 WO PCT/JP2022/012696 patent/WO2022224660A1/ja active Application Filing
- 2022-03-18 EP EP22791439.7A patent/EP4329060A1/en active Pending
- 2022-03-18 CN CN202280022148.8A patent/CN117099248A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006228610A (ja) * | 2005-02-18 | 2006-08-31 | Densei Lambda Kk | 二次電池パック |
JP2008146963A (ja) * | 2006-12-08 | 2008-06-26 | Sony Corp | 非水電解質二次電池用セパレータ、非水電解質二次電池及び電池パック |
WO2012073432A1 (ja) * | 2010-12-03 | 2012-06-07 | パナソニック株式会社 | 電池パック |
WO2013069308A1 (ja) * | 2011-11-11 | 2013-05-16 | パナソニック株式会社 | 電池パック |
JP2016143507A (ja) | 2015-01-30 | 2016-08-08 | パナソニックIpマネジメント株式会社 | 電池パック |
Also Published As
Publication number | Publication date |
---|---|
EP4329060A1 (en) | 2024-02-28 |
CN117099248A (zh) | 2023-11-21 |
JP2022167227A (ja) | 2022-11-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6004282B2 (ja) | 電池モジュール | |
WO2012081137A1 (ja) | 電池パック | |
JP2014197452A (ja) | 電池モジュール | |
EP3905375A1 (en) | Battery rack and power storage device comprising same | |
KR20210141806A (ko) | 화재 진압 수단을 포함하는 배터리 팩 | |
JP7301271B2 (ja) | 電池パック | |
WO2023179192A1 (zh) | 电池和用电设备 | |
WO2022224660A1 (ja) | 電動工具用電池パック、及び電動工具 | |
WO2023028745A1 (zh) | 电池的箱体、电池、用电装置、制备电池的方法和装置 | |
CN220155580U (zh) | 电池和用电设备 | |
CN219873923U (zh) | 电池和用电设备 | |
JP2012074162A (ja) | 電池パック及び該電池パックを備えた電動工具 | |
WO2023226201A1 (zh) | 箱体组件、电池和用电设备 | |
WO2022181601A1 (ja) | 電池パック | |
KR20230121108A (ko) | 배터리, 전기기기, 배터리를 제조하기 위한 방법 및장비 | |
CN114342168A (zh) | 电池模块、包括所述电池模块的电池架以及包括所述电池架的电力存储装置 | |
CN219811590U (zh) | 电池单体、电池及用电装置 | |
WO2023097456A1 (zh) | 电池、用电设备、制备电池的方法和设备 | |
EP4322293A1 (en) | Battery module, battery pack comprising battery module, and energy storage device and vehicle comprising battery pack | |
WO2023162908A1 (ja) | 電池パック | |
CN115224337A (zh) | 电池装置 | |
WO2024016212A1 (zh) | 电池及用电设备 | |
CN220934325U (zh) | 电池、用电设备和储能设备 | |
EP4318731A1 (en) | Battery module, battery pack comprising battery module, and energy storage system and vehicle comprising battery pack | |
CN220121974U (zh) | 电池单体、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: 22791439 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280022148.8 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022791439 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022791439 Country of ref document: EP Effective date: 20231122 |