WO2022124306A1 - 電池パック - Google Patents
電池パック Download PDFInfo
- Publication number
- WO2022124306A1 WO2022124306A1 PCT/JP2021/044927 JP2021044927W WO2022124306A1 WO 2022124306 A1 WO2022124306 A1 WO 2022124306A1 JP 2021044927 W JP2021044927 W JP 2021044927W WO 2022124306 A1 WO2022124306 A1 WO 2022124306A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery pack
- engaging
- urging member
- casing
- battery
- Prior art date
Links
- 238000007599 discharging Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 description 191
- 238000007906 compression Methods 0.000 description 191
- 239000000428 dust Substances 0.000 description 11
- 210000003811 finger Anatomy 0.000 description 5
- 230000020169 heat generation Effects 0.000 description 4
- 210000003813 thumb Anatomy 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- 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]
-
- 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
-
- 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
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
-
- 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 techniques disclosed herein relate to battery packs.
- Patent Document 1 discloses a battery pack.
- the battery pack can be attached and detached by sliding it with respect to the battery pack mounting portion of the electric device.
- the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion is the forward direction
- the direction in which the battery pack is slid when the battery pack is mounted in the battery pack mounting portion is the rear direction.
- the direction in which the battery pack mounting portion is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack.
- the battery pack includes a casing, a battery cell housed inside the casing, a circuit board housed inside the casing, and an engaging member held in the casing so as to be movable in the vertical direction. It is provided with an urging member that urges the engaging member upward.
- the engaging member includes an engaging portion that projects to the outside of the casing.
- the engaging portion is along the vertical and horizontal directions and has an engaging surface that engages with the electric device.
- the present specification provides a technique capable of smoothly moving the engaging member with respect to the casing even when the battery pack is used in a dusty environment.
- the battery pack disclosed in the present specification may be removable by sliding it with respect to the battery pack mounting portion of the electric device.
- the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion is the forward direction
- the direction in which the battery pack is slid when the battery pack is mounted in the battery pack mounting portion is the rear direction.
- the direction in which the battery pack mounting portion is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack.
- the battery pack includes a casing, a battery cell housed inside the casing, a circuit board housed inside the casing, and an engaging member held in the casing so as to be movable in the vertical direction.
- the first urging member that urges the engaging member upward and the first urging member are arranged apart from each other in the left-right direction, and the engaging member is urged upward.
- the second urging member may be provided. At least a part of the circuit board may be arranged between the first urging member and the second urging member.
- the engaging member may include an engaging portion that projects to the outside of the casing. The engaging portion may be along the vertical and horizontal directions and may have an engaging surface that engages with the electrical device. In the front-rear direction, the engaging surface may be arranged behind the front end of the first urging member and in front of the rear end of the first urging member. In the front-rear direction, the engaging surface may be arranged behind the front end of the second urging member and in front of the rear end of the second urging member.
- the first urging member and the second urging member arranged apart from each other in the left-right direction urge the engaging member upward, and thus act on the engaging member. It is possible to balance the urging force in the left-right direction, and it is possible to prevent the engaging member from tilting in the left-right direction with respect to the casing. Further, according to the above configuration, the position in the front-rear direction of the point of action on which the urging force acts on the engaging member can be brought close to the position in the front-rear direction of the engaging portion. As a result, even if dust enters the gap between the engaging member and the casing and the engaging portion is caught on the casing, the first urging member and the second urging member are arranged so as to eliminate the catching.
- the urging force can be applied to the engaging member. Further, according to the above configuration, since at least a part of the circuit board is arranged between the first urging member and the second urging member, there is a space between the first urging member and the second urging member. You can make effective use of space.
- Another battery pack disclosed in the present specification may be detachable by sliding it with respect to the battery pack mounting portion of the electric device.
- the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion is the forward direction
- the direction in which the battery pack is slid when the battery pack is mounted in the battery pack mounting portion is the rear direction.
- the direction in which the battery pack mounting portion is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack.
- the battery pack urges the casing, the battery cell housed inside the casing, the engaging member movably held in the casing in the vertical direction, and the engaging member upward.
- a first urging member and a second urging member which is arranged apart from the first urging member in the left-right direction and urges the engaging member upward may be provided. ..
- the engaging member may include an engaging portion that projects to the outside of the casing.
- the engaging portion may be along the vertical and horizontal directions and may have an engaging surface that engages with the electrical device.
- the engaging surface In the front-rear direction, the engaging surface may be arranged behind the front end of the first urging member and in front of the rear end of the first urging member.
- the engaging surface In the front-rear direction, the engaging surface may be arranged behind the front end of the second urging member and in front of the rear end of the second urging member.
- the right end of the first urging member may be arranged to the right of the right end of the engaging surface.
- the left end of the second urging member may be arranged to the left of the left end of the engaging surface in the left-right direction.
- the first urging member and the second urging member arranged apart from each other in the left-right direction urge the engaging member upward, and thus act on the engaging member. It is possible to balance the urging force in the left-right direction, and it is possible to prevent the engaging member from tilting in the left-right direction with respect to the casing. Further, according to the above configuration, the position in the front-rear direction of the point of action on which the urging force acts on the engaging member can be brought close to the position in the front-rear direction of the engaging portion. As a result, even if dust enters the gap between the engaging member and the casing and the engaging portion is caught on the casing, the first urging member and the second urging member are arranged so as to eliminate the catching.
- the urging force can be applied to the engaging member. Further, according to the above configuration, since the distance between the first urging member and the second urging member is widened, it is easy to balance the urging force acting on the engaging member in the left-right direction. It is possible to effectively prevent the engaging member from tilting in the left-right direction with respect to the casing.
- Yet another battery pack disclosed herein may be removable by sliding it against the battery pack mounting portion of an electrical device provided with a device-side terminal.
- the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion is the forward direction
- the direction in which the battery pack is slid when the battery pack is mounted in the battery pack mounting portion is the rear direction.
- the direction in which the battery pack mounting portion is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack.
- the battery pack has a casing, a battery cell housed inside the casing, a battery-side terminal that mechanically engages with the device-side terminal and is electrically connected to the device-side terminal, and a battery-side terminal that is electrically connected to the casing in the vertical direction.
- the engaging member held movably, the first urging member for urging the engaging member upward, and the first urging member are arranged apart from each other in the left-right direction.
- a second urging member that urges the engaging member upward may be provided.
- the engaging member may include an engaging portion that projects to the outside of the casing. The engaging portion may be along the vertical and horizontal directions and may have an engaging surface that engages with the electrical device.
- the engaging surface may be arranged behind the front end of the first urging member and in front of the rear end of the first urging member.
- the engaging surface may be arranged behind the front end of the second urging member and in front of the rear end of the second urging member.
- the right end of the first urging member may be arranged to the right of the right end of the battery-side terminal.
- the left end of the second urging member may be arranged to the left of the left end of the battery-side terminal.
- the first urging member and the second urging member arranged apart from each other in the left-right direction urge the engaging member upward, and thus act on the engaging member. It is possible to balance the urging force in the left-right direction, and it is possible to prevent the engaging member from tilting in the left-right direction with respect to the casing. Further, according to the above configuration, the position in the front-rear direction of the point of action on which the urging force acts on the engaging member can be brought close to the position in the front-rear direction of the engaging portion. As a result, even if dust enters the gap between the engaging member and the casing and the engaging portion is caught on the casing, the first urging member and the second urging member are arranged so as to eliminate the catching.
- the urging force can be applied to the engaging member. Further, according to the above configuration, since the distance between the first urging member and the second urging member is widened, it is easy to balance the urging force acting on the engaging member in the left-right direction. It is possible to effectively prevent the engaging member from tilting in the left-right direction with respect to the casing.
- the battery pack may be removable by sliding it against the battery pack mounting portion of the electrical device.
- the battery pack may include a casing, an engaging member having an engaging portion protruding to the outside of the casing, and an operating member having an operating surface exposed to the outside of the casing.
- the engaging portion may move toward the inside of the casing when the operation surface is pressed.
- a non-slip portion having a regularly arranged convex shape and / or a concave shape may be formed on the operation surface.
- the non-slip portion may be arranged on the operation surface closer to the engaging portion.
- the engaging member and the operating member referred to here may be an integrated member or may be separate members from each other.
- the user when the user removes the battery pack attached to the battery pack mounting portion, the user puts his or her fingertip on the non-slip portion arranged on the side close to the engaging portion on the operation surface to press the operation surface. Can be prompted to the user. Therefore, the pressing force when the user presses the operation surface can be applied at a position close to the engaging portion, and the engaging member can be smoothly moved with respect to the casing.
- FIG. 3 is a perspective view of an electric device 4 to which the battery pack 2 according to the first embodiment is attached, as viewed from the front right upper side.
- FIG. 5 is a perspective view of the vicinity of the battery pack mounting portion 6 of the electric device 4 to which the battery pack 2 according to the first embodiment is mounted, as viewed from the rear right lower side.
- FIG. 5 is a perspective view of the battery cell unit 22 of the battery pack 2 according to the first embodiment as viewed from the front right upper side. It is a vertical sectional view of the battery cell unit 22 of the battery pack 2 which concerns on Example 1.
- FIG. 3 is a perspective view of the power terminal 38 of the battery pack 2 according to the first embodiment as viewed from the rear right upper side. It is a right side view of the power terminal 38 of the battery pack 2 which concerns on Example 1.
- FIG. FIG. 3 is a perspective view of the signal terminal 40 of the battery pack 2 according to the first embodiment as viewed from the rear right upper side. It is a right side view of the signal terminal 40 of the battery pack 2 which concerns on Example 1.
- FIG. It is a top view of the battery cell unit 22 and the lower casing 24 of the battery pack 2 which concerns on Example 1.
- FIG. It is a perspective view which looked at the battery pack 2 which concerns on Example 1 from the rear left lower part.
- FIG. 5 is a perspective view of the engaging member 76 of the battery pack 2 according to the first embodiment as viewed from the front on the upper right side.
- FIG. 5 is a perspective view of the engaging member 76 of the battery pack 2 according to the first embodiment as viewed from the lower right rear side. It is a perspective view which looked at the front part of the upper casing 26 of the battery pack 2 which concerns on Example 1 from the rear right lower side.
- FIG. 5 is a perspective view of the front portion of the upper casing 26 in a state where the engaging member 76 and the operating member 78 are attached to the upper casing 26 in the battery pack 2 according to the first embodiment, as viewed from the rear right lower side. It is a perspective view which looked at the operation member 78 of the battery pack 2 which concerns on Example 1 from the front right upper side. It is a perspective view which looked at the operation member 78 of the battery pack 2 which concerns on Example 1 from the rear right lower side. It is a vertical sectional view of the vicinity of the place where the engaging member 76 and the operating member 78 of the battery pack 2 which concerns on Example 1 come into contact with each other.
- FIG. It is a vertical sectional view in the vicinity of the compression spring 80, 82 of the battery pack 2 which concerns on Example 1.
- FIG. It is a perspective view which looked at the battery pack 102 which concerns on Example 2 from the front right upper side.
- FIG. 3 is a perspective view of the battery cell unit 108 of the battery pack 102 according to the second embodiment as viewed from the front right upper side.
- It is a vertical sectional view of the battery pack 102 which concerns on Example 2.
- FIG. It is a top view of the battery cell unit 108 and the lower casing 110 of the battery pack 102 according to the second embodiment.
- FIG. 5 is a perspective view of the front portion of the upper casing 112 of the battery pack 102 according to the second embodiment as viewed from the rear right lower side.
- FIG. 2 is a perspective view of the front portion of the upper casing 112 in a state where the engaging member 122 is attached to the upper casing 112 in the battery pack 102 according to the second embodiment as viewed from the lower right rear side.
- It is a vertical sectional view in the vicinity of the engaging member 122 of the battery pack 102 which concerns on Example 2.
- FIG. It is a perspective view which looked at the vicinity of the operation member 78 of the battery pack 2 which concerns on the modification of Example 1 from the front right upper side.
- the battery pack may be removable by sliding it against the battery pack mounting portion of the electrical device.
- the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion is the forward direction
- the direction in which the battery pack is slid when the battery pack is mounted in the battery pack mounting portion is the rear direction.
- the direction in which the battery pack mounting portion is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack.
- the battery pack includes a casing, a battery cell housed inside the casing, a circuit board housed inside the casing, and an engaging member held in the casing so as to be movable in the vertical direction.
- the first urging member that urges the engaging member upward and the first urging member are arranged apart from each other in the left-right direction, and the engaging member is urged upward.
- the second urging member may be provided. At least a part of the circuit board may be arranged between the first urging member and the second urging member.
- the engaging member may include an engaging portion that projects to the outside of the casing. The engaging portion may be along the vertical and horizontal directions and may have an engaging surface that engages with the electrical device. In the front-rear direction, the engaging surface may be arranged behind the front end of the first urging member and in front of the rear end of the first urging member. In the front-rear direction, the engaging surface may be arranged behind the front end of the second urging member and in front of the rear end of the second urging member.
- the right end of the first urging member may be arranged to the right of the right end of the engaging surface in the left-right direction.
- the left end of the second urging member may be arranged to the left of the left end of the engaging surface in the left-right direction.
- a wide space is secured between the first urging member and the second urging member, so that a wide space where elements and wiring can be mounted on the circuit board can be secured. Further, since the distance between the first urging member and the second urging member is widely secured, it is easy to balance the urging force acting on the engaging member in the left-right direction, and the engaging member is attached to the casing. It is possible to effectively suppress tilting in the left-right direction.
- the left end of the first urging member may be arranged to the right of the right end of the engaging surface in the left-right direction.
- the right end of the second urging member may be arranged to the left of the left end of the engaging surface in the left-right direction.
- the space between the first urging member and the second urging member is secured wider, it is possible to secure a wider space in which elements and wiring can be mounted on the circuit board. Further, since the distance between the first urging member and the second urging member is secured wider, it is easier to balance the urging force acting on the engaging member in the left-right direction, and the engaging member is casing. It is possible to more effectively suppress tilting in the left-right direction.
- the battery pack mounting portion may include device-side terminals.
- the circuit board may include a battery-side terminal that mechanically engages with and electrically connects to the device-side terminal.
- the right end of the first urging member may be arranged to the right of the right end of the battery-side terminal.
- the left end of the second urging member may be arranged to the left of the left end of the battery-side terminal.
- a wide space is secured between the first urging member and the second urging member, so that a wide space where elements and wiring can be mounted on the circuit board can be secured. Further, since the distance between the first urging member and the second urging member in the left-right direction is widely secured, it is easy to balance the urging force acting on the engaging member in the left-right direction, and the engaging member is attached to the casing. On the other hand, it is possible to effectively suppress tilting in the left-right direction.
- the left end of the first urging member may be arranged to the right of the right end of the battery side terminal in the left-right direction.
- the right end of the second urging member may be arranged to the left of the left end of the battery-side terminal.
- the space between the first urging member and the second urging member is secured wider, it is possible to secure a wider space in which elements and wiring can be mounted on the circuit board. Further, since the distance between the first urging member and the second urging member is secured wider, it is easier to balance the urging force acting on the engaging member in the left-right direction, and the engaging member is casing. It is possible to more effectively suppress tilting in the left-right direction.
- the circuit board may include a power path through which a current flows for discharging to and / or charging from the electrical device.
- the power path may pass between the first urging member and the second urging member.
- the power path is provided on the circuit board between the first urging member and the second urging member, other elements and wirings are mounted on other parts of the circuit board. It can be effectively used as a space.
- the circuit board may include a microcontroller that controls the operation of the battery pack.
- the microcontroller may be arranged between the first urging member and the second urging member.
- the microcontroller is provided on the circuit board between the first urging member and the second urging member, other elements and wirings are mounted on other parts of the circuit board. It can be effectively used as a space.
- the battery pack is rotatably held in the casing and may further comprise an operating member having an operating surface operated by the user.
- the operating member may rotate in a direction that pushes the engaging member downward when the operating surface is pushed by the user.
- the engaging member is less likely to tilt with respect to the casing when the engaging member moves up and down with respect to the casing, as compared with the configuration in which the engaging member and the operating member are integrated. Therefore, it is possible to prevent the engaging member from being caught in the casing.
- the operating surface may be located on the front upper surface of the casing.
- the operating member may be rotatably held in the casing around a rotation axis along the left-right direction.
- the engaging member may include a contacted portion.
- the operating member may include a contact portion arranged above the contacted portion.
- the position where the abutting portion and the abutted portion abut is arranged behind the front end of the first urging member and in front of the rear end of the first urging member. May be.
- the position where the abutting portion and the abutted portion abut is arranged behind the front end of the second urging member and in front of the rear end of the second urging member. May be.
- the position in the front-rear direction of the point of action of the downward force acting on the engaging member from the operating member is set in the upward direction on which the first urging member and the second urging member act on the engaging member. It can be brought close to the position in the anteroposterior direction of the point of action of the force of. This makes it possible to prevent the engaging member from tilting in the front-rear direction.
- the contacted portion may include a rod-shaped portion extending in the left-right direction.
- the contact portion may include a contact piece arranged above the rod-shaped portion.
- the configuration of the operating member and the engaging member can be simplified.
- the casing may further include a guide portion that prohibits the engaging member from moving in the anteroposterior direction and allows the engaging member to move in the vertical direction.
- the first urging member may be arranged behind the front end of the guide portion and in front of the rear end of the guide portion.
- the second urging member may be arranged behind the front end of the guide portion and in front of the rear end of the guide portion.
- the position in the front-rear direction of the point of action of the urging force acting on the engaging member from the first urging member and the second urging member can be brought close to the position in the front-rear direction of the guide portion. .. This makes it possible to prevent the engaging member from tilting in the front-rear direction.
- the battery pack may be removable by sliding it against the battery pack mounting portion of the electrical device.
- the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion is the forward direction, and the direction in which the battery pack is slid when the battery pack is mounted in the battery pack mounting portion is the rear direction.
- the direction in which the battery pack mounting portion is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack.
- the battery pack urges the casing, the battery cell housed inside the casing, the engaging member movably held in the casing in the vertical direction, and the engaging member upward.
- a first urging member and a second urging member which is arranged apart from the first urging member in the left-right direction and urges the engaging member upward may be provided. ..
- the engaging member may include an engaging portion that projects to the outside of the casing.
- the engaging portion may be along the vertical and horizontal directions and may have an engaging surface that engages with the electrical device.
- the engaging surface In the front-rear direction, the engaging surface may be arranged behind the front end of the first urging member and in front of the rear end of the first urging member.
- the engaging surface In the front-rear direction, the engaging surface may be arranged behind the front end of the second urging member and in front of the rear end of the second urging member.
- the right end of the first urging member may be arranged to the right of the right end of the engaging surface.
- the left end of the second urging member may be arranged to the left of the left end of the engaging surface in the left-right direction.
- the battery pack may be removable by sliding it against the battery pack mounting portion of the electrical device provided with the device side terminal.
- the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion is the forward direction
- the direction in which the battery pack is slid when the battery pack is mounted in the battery pack mounting portion is the rear direction.
- the direction in which the battery pack mounting portion is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack.
- the battery pack has a casing, a battery cell housed inside the casing, a battery-side terminal that mechanically engages with the device-side terminal and is electrically connected to the device-side terminal, and a battery-side terminal that is electrically connected to the casing in the vertical direction.
- the engaging member held movably, the first urging member for urging the engaging member upward, and the first urging member are arranged apart from each other in the left-right direction.
- a second urging member that urges the engaging member upward may be provided.
- the engaging member may include an engaging portion that projects to the outside of the casing. The engaging portion may be along the vertical and horizontal directions and may have an engaging surface that engages with the electrical device.
- the engaging surface may be arranged behind the front end of the first urging member and in front of the rear end of the first urging member.
- the engaging surface may be arranged behind the front end of the second urging member and in front of the rear end of the second urging member.
- the right end of the first urging member may be arranged to the right of the right end of the battery-side terminal.
- the left end of the second urging member may be arranged to the left of the left end of the battery-side terminal.
- the battery pack may be removable by sliding it against the battery pack mounting portion of the electrical device.
- the battery pack may include a casing, an engaging member having an engaging portion protruding to the outside of the casing, and an operating member having an operating surface exposed to the outside of the casing.
- the engaging portion may move toward the inside of the casing when the operation surface is pressed.
- a non-slip portion having a regularly arranged convex shape and / or a concave shape may be formed on the operation surface.
- the non-slip portion may be arranged on the operation surface closer to the engaging portion.
- the non-slip portion comprises a plurality of ridges extending in a direction substantially orthogonal to the direction in which the battery pack is slid when the battery pack is removed from the battery pack mounting portion. / Or may consist of indentations.
- the battery pack 2 of this embodiment shown in FIG. 1 is used by being attached to the electric device 4 shown in FIG.
- the electric device 4 is an electric device operated by the electric power supplied from the battery pack 2.
- the electric device 4 may be, for example, an electric tool powered by a motor such as a driver or a drill, or an electric working machine powered by a motor such as a mower or a blower.
- the electric device 4 may be an electric device without a motor, such as a light, a radio, or a speaker.
- the electric device 4 may be a charger that supplies electric power to the battery pack 2.
- the rated voltage of the battery pack 2 is, for example, 36V.
- the rated capacity of the battery pack 2 is, for example, 5.0 Ah.
- the weight of the battery pack 2 is, for example, in the range of 1.0 kg to 2.0 kg. More specifically, the weight of the battery pack 2 is, for example, 1.33 kg or 1.9 kg.
- the electric device 4 includes a battery pack mounting portion 6.
- the battery pack 2 can be attached to the battery pack mounting portion 6 by sliding the battery pack 2 in a predetermined sliding direction with respect to the battery pack mounting portion 6.
- the direction in which the battery pack 2 is slid when the battery pack 2 is attached to the battery pack mounting portion 6 is referred to as the rear direction
- the direction in which the battery pack 2 is slid when the battery pack 2 is removed from the battery pack mounting portion 6 is referred to as the rear direction. It is called the forward direction.
- the direction in which the battery pack mounting portion 6 is located when viewed from the battery pack 2 is referred to as an upward direction
- the opposite direction of the upward direction is referred to as a downward direction
- the direction orthogonal to the front-back direction and the up-down direction is called the left-right direction.
- the battery pack mounting portion 6 of the electric device 4 is provided with a device-side terminal 8, a device-side rail 10, and an engagement groove 12.
- the device-side terminal 8 has two power terminals 14 for charging and discharging power with and from the battery pack 2, and three signal terminals 16 for signal communication with the battery pack 2. I have.
- the number of signal terminals 16 is not limited to three, and the electric device 4 may include one or two signal terminals 16 or may include four signal terminals 16.
- the power terminal 14 is arranged on the left side and the right side of the signal terminal 16.
- the device-side rail 10 and the engaging groove 12 are formed at the lower end of the housing 18 of the electrical device 4.
- the device-side rail 10 is arranged on the left side and the right side of the device-side terminal 8 and extends in the front-rear direction.
- the engagement groove 12 is arranged on the front side of the device side terminal 8 and is recessed upward.
- the engaging groove 12 is arranged along the vertical direction and the horizontal direction, and is provided with an engaging surface 12a facing rearward.
- the battery pack 2 includes a casing 20 and a battery cell unit 22 (see FIG. 4) housed inside the casing 20.
- the casing 20 includes a lower casing 24 and an upper casing 26.
- the battery cell unit 22 includes a battery cell 28, a resin cell holder 30 that holds the battery cell 28, a control circuit board 32 held by the cell holder 30 above the cell holder 30, and a cell holder 30. It is arranged on the left and right side surfaces of the above, and includes a lead plate 34 for electrically connecting the battery cell 28 and the control circuit board 32, and a battery side terminal 36 provided on the upper surface of the control circuit board 32.
- the battery-side terminal 36 has two power terminals 38 arranged corresponding to the power terminal 14 of the electric device 4 and four signal terminals 40 arranged corresponding to the signal terminal 16 of the electric device 4. It is equipped with.
- each battery cell 28 is, for example, a lithium ion battery cell.
- Each battery cell 28 has a substantially cylindrical shape, and is arranged so that the longitudinal direction is along the left-right direction.
- the shape of each battery cell 28 is, for example, 18650 type, having a diameter of 18 mm and a longitudinal dimension of 65 mm.
- four battery cells 28 are arranged side by side in the front-rear direction.
- the first battery cell 28 from the front and the first battery cell 28 from the back are arranged slightly above the other battery cells 28.
- Five battery cells 28 are arranged side by side in the front-rear direction in the second stage from the bottom.
- the position of the center of each of the battery cells 28 in the second stage from the bottom is arranged so as not to overlap the position of the center of each of the battery cells 28 in the first stage from the bottom.
- the first battery cell 28 from the front and the first battery cell 28 from the rear are arranged slightly below the other battery cells 28.
- Six battery cells 28 are arranged side by side in the front-rear direction in the third stage from the bottom.
- the position of the center of each of the battery cells 28 in the third stage from the bottom is arranged so as not to overlap the position of the center of each of the battery cells 28 in the second stage from the bottom.
- the second battery cell 28 from the front and the second battery cell 28 from the rear are arranged slightly below the other battery cells 28.
- Five battery cells 28 are arranged side by side in the front-rear direction in the fourth stage from the bottom, that is, the first stage from the top.
- the position of the center of each of the battery cells 28 in the fourth stage from the bottom is arranged so as not to overlap the position of the center of each of the battery cells 28 in the third stage from the bottom.
- the battery cells 28 in the fourth stage from the bottom are arranged so that their positions in the vertical direction are substantially the same.
- each power terminal 38 has a base 38a, a holding portion 38b that bends upward from the left and right ends of the base 38a, and a front end support portion 38c that bends downward from the front end of the base 38a.
- a rear end support portion 38d that bends downward from the rear end of the base portion 38a, and a central support portion 38e that bends downward from the left end near the center in the front-rear direction of the base portion 38a are provided.
- the holding portion 38b elastically holds the power terminal 14 of the electric device 4 from the left-right direction.
- the power terminal 38 mechanically engages with the power terminal 14 of the electric device 4 and is electrically connected to the power terminal 38.
- the front end support portion 38c, the rear end support portion 38d, and the central support portion 38e are soldered to the control circuit board 32 in a state of being inserted into holes formed in the control circuit board 32.
- the power terminal 38 is mechanically fixed to the control circuit board 32 and is electrically connected to the control circuit board 32.
- each signal terminal 40 has a base 40a, a holding portion 40b that bends upward from the left and right ends of the base 40a, and a front end support portion 40c that bends downward from the front end of the base 40a. And a rear end support portion 40d that bends downward from the rear end of the base portion 40a.
- the holding portion 40b elastically holds the signal terminal 16 of the electric device 4 from the left-right direction.
- the signal terminal 40 mechanically engages with the signal terminal 16 of the electric device 4 and is electrically connected to the signal terminal 40.
- the front end support portion 40c and the rear end support portion 40d are soldered to the control circuit board 32 in a state of being inserted into holes formed in the control circuit board 32.
- the signal terminal 40 is mechanically fixed to the control circuit board 32 and is electrically connected to the control circuit board 32.
- the power terminal 38 Since a large current flows through the power terminal 38 as compared with the signal terminal 40, the temperature rise due to heat generation is also large. Therefore, if the power terminal 38 does not have the central support portion 38e like the signal terminal 40 but has only the front end support portion 38c and the rear end support portion 38d, the front end support portion is provided. A large current flows through each of the 38c and the rear end support portion 38d, and the temperature rise due to heat generation becomes very large. As shown in FIGS. 6 and 7, in the battery pack 2 of the present embodiment, the power terminal 38 is attached to the control circuit board 32 via the front end support portion 38c, the rear end support portion 38d, and the central support portion 38e. It is electrically connected. Therefore, the current flowing through each of the front end support portion 38c, the rear end support portion 38d, and the central support portion 38e can be reduced, and the temperature rise due to heat generation can be suppressed.
- a resin bracket 42 is provided on the upper surface of the control circuit board 32. Further, the upper surface of the control circuit board 32 extends in the front-rear direction at a position separated upward from the control circuit board 32, the front end is bent downward and fixed to the control circuit board 32, and the rear end is also downward. A metal conductive member 44 is provided which is bent and fixed to the control circuit board 32. The conductive member 44 is electrically arranged on the current path between the battery cell 28 and the power terminal 38.
- the conductive member 44 By providing the conductive member 44, it is possible to suppress heat generation of the control circuit board 32 as compared with the case where all the current paths between the battery cell 28 and the power terminal 38 are printed wirings on the control circuit board 32. can. Further, the temperature rise of the control circuit board 32 can be suppressed by dissipating heat from the conductive member 44 to the surrounding air.
- the upper surface of the control circuit board 32 has circuit element regions 46 and 48 on which various circuit elements are mounted.
- the circuit element region 46 is arranged in front of the battery side terminal 36.
- the circuit element region 48 is arranged behind the battery side terminal 36.
- a microcontroller 50 that controls the operation of the battery pack 2 is mounted in the circuit element region 46.
- front guard portions 52 projecting forward and downward are formed at the front lower right end and the front lower left end of the lower casing 24.
- a rear guard portion 54 projecting rearward and downward is formed at the rear lower right end and the rear lower left end of the lower casing 24. If the battery pack 2 suddenly falls, the front guard portion 52 or the rear guard portion 54 collides with the ground or the floor surface.
- the front guard portion 52 is arranged so as to face the surface of the cell holder 30 that straddles the two battery cells 28 adjacent to the front guard portion 52, and the surface of the cell holder 30 and the front guard portion 52. A clearance of 13.0 mm or more is secured between the two.
- the rear guard portion 54 is arranged so as to face the surface of the cell holder 30 straddling the two battery cells 28 close to the rear guard portion 54, and the surface of the cell holder 30 and the rear guard. A clearance of 9.0 mm or more is secured between the portion 54 and the portion 54. Therefore, even if the rear guard portion 54 is deformed due to a collision, it is possible to prevent the battery cell 28 from being damaged.
- the lower casing 24 and the upper casing 26 are fixed to each other by two bolts 56 in front of the battery pack 2 and two bolts 58 in the rear of the battery pack 2.
- the bolt 56 penetrates the bolt receiving portion 60 formed near the front end of the lower casing 24 from below and is screwed into the bolt hole 62 formed near the front end of the upper casing 26.
- the head portion 56a of the bolt 56 is below the lower end of the battery cell 28 (in this embodiment, the first battery cell 28 from the front of the third stage from the bottom) located at the frontmost of the plurality of battery cells 28. Is located in.
- the bolts 56 can be arranged close to the plurality of battery cells 28, and the dimensions of the battery pack 2 in the front-rear direction can be reduced.
- the bolt 58 penetrates the bolt receiving portion 64 formed near the rear end of the lower casing 24 from below and is screwed into the bolt hole 66 formed near the rear end of the upper casing 26.
- the head portion 58a of the bolt 58 is below the lower end of the battery cell 28 (in this embodiment, the first battery cell 28 from the rear of the third stage from the bottom) located at the rearmost position among the plurality of battery cells 28. Is located in.
- the bolt 58 can be arranged close to the plurality of battery cells 28, and the dimensions of the battery pack 2 in the front-rear direction can be reduced.
- an opening 68 for terminals, a rail 70 on the battery side, an opening 72 for engagement, and an opening 74 for operation are formed on the upper surface of the upper casing 26.
- the terminal opening 68 is arranged at a position corresponding to the battery side terminal 36 (see FIG. 4).
- the device-side terminal 8 (see FIG. 3) of the electric device 4 enters the inside of the upper casing 26 through the terminal opening 68.
- the device-side terminal 8 mechanically engages with the battery-side terminal 36 and is electrically connected.
- the battery-side rail 70 extends in the front-rear direction on the left and right sides of the terminal opening 68.
- the battery-side rail 70 is slidably engaged with the device-side rail 10 (see FIG. 3) of the electric device 4 in the front-rear direction.
- the engaging opening 72 is arranged in front of the terminal opening 68.
- An engaging member 76 is attached to the engaging opening 72.
- the operating opening 74 is arranged in front of the engaging opening 72.
- An operation member 78 is attached to the operation opening 74.
- the engaging member 76 includes a base portion 76a, an engaging portion 76b protruding upward from the base portion 76a, a right support portion 76c arranged to the right of the base portion 76a, and a base portion 76a. It has a left support portion 76d arranged on the left side.
- the base 76a includes a right wall 76e arranged along the front-rear direction and the vertical direction at the right end of the base 76a, a left wall 76f arranged along the front-rear direction and the vertical direction at the left end of the base 76a, and left and right of the base 76a.
- the central wall 76g arranged along the front-back direction and the vertical direction at the center of the direction, and the rear part of the right wall 76e, the rear part of the left wall 76f, and the central wall 76g arranged along the left-right direction and the vertical direction.
- the rear wall 76h connecting the rear part and the upper wall connecting the rear upper part of the right wall 76e, the rear upper part of the left wall 76f, and the rear upper part of the central wall 76g are arranged along the front-rear direction and the left-right direction.
- the engaging portion 76b includes a right engaging portion 76l arranged at the right end of the engaging portion 76b, a left engaging portion 76m arranged at the left end of the engaging portion 76b, and a right engaging portion 76l and a left engaging portion. It is provided with a connecting portion 76n for connecting 76 m.
- the right engaging portion 76l is arranged along the left-right direction and the vertical direction, and is arranged so that the right engaging surface 76o faces forward and the right engaging surface 76o faces rearward and upward behind the right engaging surface 76o. It has a right-sloping surface 76p that is inclined from above to downward as it goes from the front to the rear.
- the left engaging portion 76m is arranged along the left-right direction and the vertical direction, and is arranged so that the left engaging surface 76q facing forward and the left engaging surface 76q are rearward and facing backward and upward from the left engaging surface 76q. It is provided with a left inclined surface 76r that is inclined from the upper side to the lower side from the front to the rear.
- the right support portion 76c is provided with a substantially cylindrical spring receiving groove 76s that opens downward.
- the left support portion 76d includes a substantially cylindrical spring receiving groove 76t that opens downward.
- a compression spring 80 (see FIG. 4) is attached to the spring receiving groove 76s.
- a compression spring 82 (see FIG. 4) is attached to the spring receiving groove 76t.
- a spring support portion 84 that supports the compression spring 80 and a spring support portion 86 that supports the compression spring 82 are formed on the upper portion of the cell holder 30.
- the control circuit board 32 includes a notch 88 extending from the right edge to the left and a notch 90 extending from the left edge to the right.
- the spring support portion 84 penetrates the notch 88 and projects upward.
- the spring support portion 86 penetrates the notch 90 and projects upward.
- the compression springs 80 and 82 urge the engaging member 76 upward with respect to the cell holder 30.
- a right guide portion 92 and a left guide portion 94 are formed on the inner surface of the upper casing 26 in the vicinity of the engaging opening 72.
- the right guide portion 92 accommodates the right support portion 76c of the engaging member 76 so as to be movable in the vertical direction and immovably in the front-rear direction and the right direction.
- the left guide portion 94 accommodates the left support portion 76d of the engaging member 76 so as to be movable in the vertical direction and immovably in the front-rear direction and the left direction. As shown in FIG.
- the engaging portion 76b protrudes from the engaging opening 72 to the outside of the upper casing 26
- the right support portion 76c is housed in the right guide portion 92
- the left support portion 76d Is attached to the upper casing 26 so as to be accommodated in the left guide portion 94.
- the operation member 78 includes an operation unit 78a, a support portion 78b arranged in front of and below the operation unit 78a, and a contact portion 78c arranged behind the operation unit 78a. ing.
- the operation unit 78a includes a substantially planar operation surface 78d that is pressed and operated by the user.
- a plurality of (for example, six) ridges 78h protruding outward from the operation surface 78d are formed on the operation surface 78d.
- the plurality of ridges 78h are arranged parallel to each other along the left-right direction.
- the plurality of ridges 78h constitute a non-slip portion 78i that prevents the fingertips of the user from slipping.
- the number of the plurality of ridges 78h may be 2, 3, 4, 5, or 7 or more.
- the non-slip portion 78i may include a plurality of (for example, six) ridges (not shown) in addition to the plurality of ridges 78h or in place of the plurality of ridges 78h.
- the non-slip portion 78i may be composed of other regularly arranged convex and / or concave shapes, such as a plurality of convex portions or a plurality of concave portions arranged at the intersections of the grids. .. As shown in FIG. 1, the non-slip portion 78i is arranged on the operation surface 78d on the side closer to the engaging member 76.
- the center of the plurality of protrusions 78h in the front-rear direction is offset rearward (that is, closer to the engaging member 76) from the center of the operation surface 78d in the front-rear direction.
- the support portion 78b includes a rotating shaft 78e extending in the left-right direction.
- the contact portion 78c includes a right contact piece 78f extending rearward and a left contact piece 78g extending rearward.
- the right contact piece 78f and the left contact piece 78g are arranged side by side on the left and right.
- a shaft holding portion 96 is formed on the inner surface near the front end of the upper casing 26.
- the shaft holding portion 96 rotatably holds the right end and the left end of the rotating shaft 78e of the operating member 78.
- the right contact piece 78f and the left contact piece 78g are inserted into the base portion 76a of the engagement member 76, and the operation surface 78d of the operation portion 78a passes through the operation opening 74. It is exposed to the outside of the upper casing 26 and is attached to the upper casing 26 so that the rotating shaft 78e of the support portion 78b is held by the shaft holding portion 96.
- the right contact piece 78f of the operating member 78 is arranged above the right beam 76j of the engaging member 76.
- the left contact piece 78g of the operating member 78 is arranged above the left beam 76k of the engaging member 76. Therefore, the compression springs 80 and 82 urge the engaging member 76 upward with respect to the cell holder 30, so that the engaging member 76 is pressed against the upper casing 26 and the right contact piece of the operating member 78.
- the 78f and the left contact piece 78g are pushed upward by the right beam 76j and the left beam 76k of the engaging member 76, and the operating member 78 is also pressed against the upper casing 26.
- the operation of the engaging member 76 when the battery pack 2 is attached to the electric device 4 will be described.
- the housing 18 (see FIG. 3) of the electric device 4 abuts on the right inclined surface 76p and the left inclined surface 76r of the engaging member 76 and moves from the rear to the front. Then, the engaging member 76 is pushed downward against the urging force of the compression springs 80 and 82.
- the engaging groove 12 (see FIG. 3) of the electric device 4 moves above the engaging portion 76b of the engaging member 76, the engaging member 76 is pushed upward by the urging force of the compression springs 80 and 82. , The engaging portion 76b enters the engaging groove 12.
- the right engaging surface 76o and the left engaging surface 76q of the engaging member 76 are arranged so as to face the engaging surface 12a (see FIG. 3) of the electric device 4, so that the battery pack 2 is placed in the electric device. It is prohibited to slide forward with respect to 4. This prohibits the removal of the battery pack 2 from the electrical device 4.
- the operation of the engaging member 76 when the battery pack 2 is removed from the electric device 4 will be described.
- the user When removing the battery pack 2 from the electric device 4, the user performs a pressing operation on the operation surface 78d of the operation member 78.
- the operating member 78 rotates around the rotating shaft 78e, and the right beam 76j and the left beam 76k of the engaging member 76 have the right contact piece 78f and the left contact piece 78g of the operation member 78.
- the engaging member 76 is pushed downward against the urging force of the compression springs 80 and 82.
- the engaging portion 76b of the engaging member 76 is allowed to come out of the engaging groove 12 of the electric device 4 and slide the battery pack 2 forward with respect to the electric device 4. From this state, the user can remove the battery pack 2 from the electric device 4 by sliding the battery pack 2 forward with respect to the electric device 4.
- the operation surface 78d of the operation member 78 may be formed in the shape shown in FIG. 31.
- the operation surface 78d includes a substantially planar first operation surface 78j and a substantially planar second operation surface 78k bent forward and downward from the front end of the first operation surface 78j.
- a non-slip portion 78i composed of a plurality of ridges 78h is formed on the first operation surface 78j.
- On the second operation surface 78k a wide finger contact portion 78l protruding outward from the second operation surface 78k is formed.
- FIG. 31 the operation surface 78d includes a substantially planar first operation surface 78j and a substantially planar second operation surface 78k bent forward and downward from the front end of the first operation surface 78j.
- a non-slip portion 78i composed of a plurality of ridges 78h is formed on the first operation surface 78j.
- On the second operation surface 78k a wide finger contact portion 78l protruding
- the non-slip portion 78i is arranged on the operation surface 78d on the side closer to the engaging member 76.
- the center of the plurality of protrusions 78h in the front-rear direction is offset rearward (that is, closer to the engaging member 76) from the center of the operation surface 78d in the front-rear direction.
- the battery pack 2 is removable by sliding it with respect to the battery pack mounting portion 6 of the electric device 4.
- the direction in which the battery pack 2 is slid when the battery pack 2 is removed from the battery pack mounting portion 6 is the forward direction, and the direction in which the battery pack 2 is slid when the battery pack 2 is attached to the battery pack mounting portion 6 is the rear direction.
- the battery pack 2 is attached to the battery pack mounting portion 6 and the direction in which the battery pack mounting portion 6 is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack 2.
- the battery pack 2 moves up and down to the casing 20, the battery cell 28 housed inside the casing 20, the control circuit board 32 (example of the circuit board) housed inside the casing 20, and the casing 20.
- the engaging member 76 that is held so that it can be held, the compression spring 80 that urges the engaging member 76 upward (example of the first urging member), and the compression spring 80 are arranged apart from each other in the left-right direction. It is provided with a compression spring 82 (an example of the second urging member) that urges the engaging member 76 upward. At least a part of the control circuit board 32 is arranged between the compression spring 80 and the compression spring 82.
- the engaging member 76 includes an engaging portion 76b that projects to the outside of the casing 20.
- the engaging portion 76b is along the vertical and horizontal directions, and has a right engaging surface 76o and a left engaging surface 76q (example of an engaging surface) that engage with the electric device 4.
- the right engaging surface 76o and the left engaging surface 76q are arranged behind the front end of the compression spring 80 and in front of the rear end of the compression spring 82.
- the right engaging surface 76o and the left engaging surface 76q are arranged behind the front end of the compression spring 82 and in front of the rear end of the compression spring 82.
- the compression spring 80 and the compression spring 82 arranged apart from each other in the left-right direction urge the engaging member 76 upward, and thus act on the engaging member 76.
- the force can be balanced in the left-right direction, and the engaging member 76 can be prevented from tilting in the left-right direction with respect to the casing 20.
- the position in the front-rear direction of the point of action on which the urging force acts on the engaging member 76 can be brought close to the position in the front-rear direction of the engaging portion 76b.
- the compression spring 80 and the compression spring 82 are provided so as to eliminate the catching.
- the urging force can be applied to the engaging member 76.
- the right end of the compression spring 80 is located to the right of the right end of the right engagement surface 76o in the left-right direction. In the left-right direction, the left end of the compression spring 82 is arranged to the left of the left end of the left engaging surface 76q.
- the space between the compression spring 80 and the compression spring 82 is widely secured, it is possible to secure a wide space in which the elements and wiring can be mounted on the control circuit board 32. Further, since the distance between the compression spring 80 and the compression spring 82 is widely secured, it is easy to balance the urging force acting on the engaging member 76 in the left-right direction, and the engaging member 76 is attached to the casing 20. It is possible to effectively suppress tilting in the left-right direction.
- the left end of the compression spring 80 is located to the right of the right end of the right engagement surface 76o in the left-right direction. In the left-right direction, the right end of the compression spring 82 is arranged to the left of the left end of the left engaging surface 76q.
- the space between the compression spring 80 and the compression spring 82 is secured wider, it is possible to secure a wider space in which the elements and wiring can be mounted on the control circuit board 32. Further, since the distance between the compression spring 80 and the compression spring 82 is secured wider, it is easier to balance the urging force acting on the engaging member 76 in the left-right direction, and the engaging member 76 is attached to the casing 20. On the other hand, tilting in the left-right direction can be suppressed more effectively.
- the battery pack mounting portion 6 includes a device-side terminal 8.
- the control circuit board 32 includes a battery-side terminal 36 that mechanically engages with the device-side terminal 8 and electrically connects to the device-side terminal 8.
- the right end of the compression spring 80 is arranged to the right of the right end of the battery side terminal 36.
- the left end of the compression spring 82 is arranged to the left of the left end of the battery-side terminal 36.
- the space between the compression spring 80 and the compression spring 82 is widely secured, it is possible to secure a wide space in which the elements and wiring can be mounted on the control circuit board 32. Further, since the distance between the compression spring 80 and the compression spring 82 is widely secured, it is easy to balance the urging force acting on the engaging member 76 in the left-right direction, and the engaging member 76 is attached to the casing 20. It is possible to effectively suppress tilting in the left-right direction.
- the left end of the compression spring 80 is located to the right of the right end of the battery side terminal 36 in the left-right direction. In the left-right direction, the right end of the compression spring 82 is arranged to the left of the left end of the battery-side terminal 36.
- the space between the compression spring 80 and the compression spring 82 is secured wider, it is possible to secure a wider space in which the elements and wiring can be mounted on the control circuit board 32. Further, since the distance between the compression spring 80 and the compression spring 82 is secured wider, it is easier to balance the urging force acting on the engaging member 76 in the left-right direction, and the engaging member 76 is attached to the casing 20. On the other hand, tilting in the left-right direction can be suppressed more effectively.
- control circuit board 32 comprises a conductive member 44 (an example of a power path) through which a current flows for discharging to and / or charging from electrical equipment 4. ..
- the conductive member 44 passes between the compression spring 80 and the compression spring 82.
- the conductive member 44 passes between the compression spring 80 and the compression spring 82, the other part of the control circuit board 32 is effectively used as a space for mounting other elements and wiring. It can be utilized.
- control circuit board 32 comprises a microcontroller 50 that controls the operation of the battery pack 2.
- the microcontroller 50 is arranged between the compression spring 80 and the compression spring 82.
- the microcontroller 50 is arranged between the compression spring 80 and the compression spring 82, the other part of the control circuit board 32 can be effectively used as a space for mounting other elements and wiring. It can be utilized.
- the battery pack 2 is rotatably held in the casing 20 and further comprises an operating member 78 having an operating surface 78d operated by the user.
- the operation member 78 rotates in a direction in which the engagement member 76 is pushed downward.
- the engaging member 76 when the engaging member 76 moves up and down with respect to the casing 20, the engaging member 76 is the casing 20 as compared with the configuration in which the engaging member 76 and the operating member 78 are integrated. Since it is less likely to be tilted with respect to the casing 20, the engaging member 76 can be less likely to be caught by the casing 20.
- the operating surface 78d is located on the front upper surface of the casing 20.
- the operation surface 78d is pressed by the thumb.
- the user can grasp the battery pack 2 and slide the battery pack 2 forward while maintaining the state in which the operation surface 78d is pressed.
- the operation when the user removes the battery pack 2 can be simplified.
- the operating member 78 is rotatably held in the casing 20 around a rotation axis along the left-right direction.
- the engaging member 76 comprises a right beam 76j and a left beam 76k (example of contacted portion).
- the operating member 78 includes a right contact piece 78f and a left contact piece 78g (example of a contact portion) arranged above the right beam 76j and the left beam 76k.
- the positions where the right contact piece 78f and the left contact piece 78g and the right beam 76j and the left beam 76k abut are behind the front end of the compression spring 80 and forward of the rear end of the compression spring 80. Have been placed.
- the position in the front-rear direction of the point of action of the downward force acting on the engaging member 76 from the operating member 78 is upwardly acting on the engaging member 76 from the compression spring 80 and the compression spring 82. It can be brought close to the position of the point of action of the force in the anteroposterior direction. As a result, it is possible to prevent the engaging member 76 from tilting in the front-rear direction.
- the right beam 76j and the left beam 76k (example of a rod-shaped portion) have a rod-shaped shape extending in the left-right direction.
- the right contact piece 78f and the left contact piece 78g (example of the contact piece) are arranged above the right beam 76j and the left beam 76k.
- the configuration of the operating member 78 and the engaging member 76 can be simplified.
- the casing 20 prohibits the engaging member 76 from moving in the anteroposterior direction and allows the engaging member 76 to move in the vertical direction, the right guide portion 92 and the left guide portion 94 (guides).
- the example of the part) is further provided.
- the compression spring 80 is arranged behind the front ends of the right guide portion 92 and the left guide portion 94 and in front of the rear ends of the right guide portion 92 and the left guide portion 94.
- the compression spring 82 is arranged behind the front ends of the right guide portion 92 and the left guide portion 94, and in front of the rear ends of the right guide portion 92 and the left guide portion 94.
- the position in the front-rear direction of the point of action of the urging force acting on the engaging member 76 from the compression spring 80 and the compression spring 82 is close to the position in the front-rear direction of the right guide portion 92 and the left guide portion 94. Can be made to. As a result, it is possible to prevent the engaging member 76 from tilting in the front-rear direction.
- the battery pack 2 is removable by sliding it against the battery pack mounting portion 6 of the electrical device 4.
- the direction in which the battery pack 2 is slid when the battery pack 2 is removed from the battery pack mounting portion 6 is the forward direction, and the direction in which the battery pack 2 is slid when the battery pack 2 is attached to the battery pack mounting portion 6 is the rear direction.
- the battery pack 2 has a casing 20, a battery cell 28 housed inside the casing 20, an engaging member 76 movably held in the casing 20 in the vertical direction, and an engaging member 76 facing upward.
- a compression spring 80 (example of the first urging member) to be urged and a compression spring 82 (an example of the first urging member) which is arranged apart from the compression spring 80 in the left-right direction and urges the engaging member 76 upward.
- An example of a second urging member is provided.
- the engaging member 76 includes an engaging portion 76b that projects to the outside of the casing 20.
- the engaging portion 76b is along the vertical and horizontal directions, and has a right engaging surface 76o and a left engaging surface 76q (example of an engaging surface) that engage with the electric device 4.
- the right engaging surface 76o and the left engaging surface 76q are arranged behind the front end of the compression spring 80 and in front of the rear end of the compression spring 82.
- the right engaging surface 76o and the left engaging surface 76q are arranged behind the front end of the compression spring 82 and in front of the rear end of the compression spring 82.
- the right end of the compression spring 80 is arranged to the right of the right end of the right engaging surface 76o.
- the left end of the compression spring 82 is arranged to the left of the left end of the left engaging surface 76q.
- the compression spring 80 and the compression spring 82 arranged apart from each other in the left-right direction urge the engaging member 76 upward, and thus act on the engaging member 76.
- the force can be balanced in the left-right direction, and the engaging member 76 can be prevented from tilting in the left-right direction with respect to the casing 20.
- the position in the front-rear direction of the point of action on which the urging force acts on the engaging member 76 can be brought close to the position in the front-rear direction of the engaging portion 76b.
- the compression spring 80 and the compression spring 82 are provided so as to eliminate the catching.
- the urging force can be applied to the engaging member 76.
- the battery pack 2 is removable by sliding it against the battery pack mounting portion 6 of the electrical device 4 provided with the device side terminal 8.
- the direction in which the battery pack 2 is slid when the battery pack 2 is removed from the battery pack mounting portion 6 is the forward direction, and the direction in which the battery pack 2 is slid when the battery pack 2 is attached to the battery pack mounting portion 6 is the rear direction.
- the battery pack 2 is attached to the battery pack mounting portion 6 and the direction in which the battery pack mounting portion 6 is arranged is upward and the reverse direction of the upward direction is downward when viewed from the battery pack 2.
- the battery pack 2 is attached to the casing 20, the battery cell 28 housed inside the casing 20, the battery-side terminal 36 that is mechanically engaged with the device-side terminal 8 and electrically connected, and the casing 20.
- An engaging member 76 that is movably held in the vertical direction, a compression spring 80 that urges the engaging member 76 upward (example of the first urging member), and a left-right direction with respect to the compression spring 80. They are spaced apart and include a compression spring 82 (an example of a second urging member) that urges the engaging member 76 upward.
- the engaging member 76 includes an engaging portion 76b that projects to the outside of the casing 20.
- the engaging portion 76b is along the vertical and horizontal directions, and has a right engaging surface 76o and a left engaging surface 76q (example of an engaging surface) that engage with the electric device 4.
- the right engaging surface 76o and the left engaging surface 76q are arranged behind the front end of the compression spring 80 and in front of the rear end of the compression spring 82.
- the right engaging surface 76o and the left engaging surface 76q are arranged behind the front end of the compression spring 82 and in front of the rear end of the compression spring 82.
- the right end of the compression spring 80 is arranged to the right of the right end of the battery side terminal 36.
- the left end of the compression spring 82 is arranged to the left of the left end of the battery-side terminal 36.
- the compression spring 80 and the compression spring 82 arranged apart from each other in the left-right direction urge the engaging member 76 upward, and thus act on the engaging member 76.
- the force can be balanced in the left-right direction, and the engaging member 76 can be prevented from tilting in the left-right direction with respect to the casing 20.
- the position in the front-rear direction of the point of action on which the urging force acts on the engaging member 76 can be brought close to the position in the front-rear direction of the engaging portion 76b.
- the compression spring 80 and the compression spring 82 are provided so as to eliminate the catching.
- the urging force can be applied to the engaging member 76.
- the battery pack 2 is removable by sliding it against the battery pack mounting portion 6 of the electrical device 4.
- the battery pack 2 includes a casing 20, an engaging member 76 having an engaging portion 76b projecting to the outside of the casing 20, and an operating member 78 having an operating surface 78d exposed to the outside of the casing 20.
- the engaging portion 76b moves toward the inside of the casing 20 when the operation surface 78d is pressed.
- a non-slip portion 78i composed of a plurality of regularly arranged ridges 78h (examples of a convex shape and / or a concave shape) is formed.
- the non-slip portion 78i is arranged on the operation surface 78d on the side closer to the engaging portion 76b.
- the user when the user removes the battery pack 2 attached to the battery pack mounting portion 6, the user puts his or her fingertip on the non-slip portion 78i arranged on the operation surface 78d near the engaging portion 76b. The user can be prompted to press the operation surface 78d. Therefore, the pressing force when the user presses the operation surface 78d can be applied at a position close to the engaging portion 76b, and the engaging member 76 can be smoothly moved with respect to the casing 20.
- the non-slip portion 78i extends in a direction substantially orthogonal to the direction in which the battery pack 2 is slid (eg, forward) when the battery pack 2 is removed from the battery pack mounting portion 6. It consists of a plurality of ridges 78h.
- the battery pack 102 of the present embodiment shown in FIG. 22 is used by being attached to an electric device 4 (see FIGS. 2 and 3) in the same manner as the battery pack 2 of the first embodiment.
- the battery pack 102 can be attached to the battery pack mounting portion 6 by sliding the battery pack 102 in a predetermined sliding direction with respect to the battery pack mounting portion 6 of the electric device 4.
- the direction in which the battery pack 102 is slid when the battery pack 102 is attached to the battery pack mounting portion 6 is referred to as a rear direction
- the direction in which the battery pack 102 is slid when the battery pack 102 is removed from the battery pack mounting portion 6 is referred to as a rear direction. It is called the forward direction.
- the direction in which the battery pack mounting portion 6 is located when viewed from the battery pack 102 is referred to as an upward direction, and the opposite direction of the upward direction is referred to as a downward direction. Further, the direction orthogonal to the front-back direction and the up-down direction is called the left-right direction.
- the rated voltage of the battery pack 102 is, for example, 36V.
- the rated capacity of the battery pack 102 is, for example, 4.0 Ah.
- the weight of the battery pack 102 is 1.0 kg or less, for example, 1.0 kg.
- the battery pack 102 includes a casing 106 and a battery cell unit 108 (see FIG. 23) housed inside the casing 106.
- the casing 106 includes a lower casing 110 and an upper casing 112.
- the lower casing 110 and the upper casing 112 are fixed to each other by four bolts (not shown).
- the battery cell unit 108 includes a battery cell 114 (see FIG. 24), a resin cell holder 116 that holds the battery cell 114, and a control circuit board that is held by the cell holder 116 above the cell holder 116.
- the 118 is arranged on the left and right side surfaces of the cell holder 116, and includes a lead plate 120 that electrically connects the battery cell 114 and the control circuit board 118, and a battery side terminal 36 provided on the upper surface of the control circuit board 118. ing.
- each battery cell 114 is, for example, a lithium ion battery cell.
- Each battery cell 114 has a substantially cylindrical shape, and is arranged so that the longitudinal direction is along the left-right direction.
- the shape of each battery cell 114 is, for example, 21700 type, having a diameter of 21 mm and a longitudinal dimension of 70 mm.
- Five battery cells 114 are arranged side by side in the front-rear direction in the lower row.
- the lower battery cells 114 are arranged so that their positions in the vertical direction are substantially the same.
- Five battery cells 114 are arranged side by side in the front-rear direction in the upper row.
- the position of the center of each of the upper battery cells 114 in the front-rear direction is arranged so as to substantially coincide with the position of the center of each of the lower battery cells 114 in the front-rear direction.
- the upper battery cells 114 are arranged so that their positions in the vertical direction are substantially the same.
- a bracket 42 is provided on the upper surface of the control circuit board 118 in order to suppress a short circuit between the battery side terminals 36.
- the upper surface of the control circuit board 118 has circuit element regions 46 and 48.
- a microcontroller 50 is mounted in the circuit element region 46.
- the terminal opening 68, the battery side rail 70, the engaging opening 72, and the operating opening 74 are formed on the upper surface of the upper casing 112.
- An engaging member 122 is attached to the engaging opening 72 and the operating opening 74.
- the engaging member 122 includes a base portion 122a, an engaging portion 122b protruding upward from the rear portion of the base portion 122a, a right support portion 122c arranged to the right of the base portion 122a, and a base portion. It includes a left support portion 122d arranged to the left of the 122a, an operation portion 122e extending forward and downward from the base portion 122a, and a support portion 122f extending downward from the vicinity of the front end of the operation portion 122e.
- the engaging portion 122b includes a right engaging portion 122g arranged at the right end of the engaging portion 122b, a left engaging portion 122h arranged at the left end of the engaging portion 122b, and a right engaging portion 122g and a left engaging portion.
- a connecting portion 122i for connecting the 122h is provided.
- the right engaging portion 122g is arranged along the left-right direction and the vertical direction, and is arranged so as to have a front-facing right engaging surface 122j and a rearward facing right engaging surface 122j and facing rearward and upward. It has a right-sloping surface 122k that is inclined from above to downward as it goes from front to rear.
- the left engaging portion 122h is arranged along the left-right direction and the vertical direction, and is arranged with the left engaging surface 122l facing forward and the left engaging surface 122l rearward of the left engaging surface 122l facing rearward and upward. It has a left inclined surface 122 m that is inclined from the upper side to the lower side from the front to the rear.
- the right support portion 122c includes a substantially cylindrical spring receiving groove 122n that opens downward.
- a compression spring 80 (see FIG. 23) is attached to the spring receiving groove 122n.
- the left support portion 122d includes a substantially cylindrical spring receiving groove 122o that opens downward.
- a compression spring 82 (see FIG. 23) is attached to the spring receiving groove 122o. As shown in FIG.
- the operation unit 122e includes an operation surface 122p that is pressed by the user.
- the support portion 122f has a right guide protrusion 122q that protrudes to the right from the right end of the support portion 122f and extends in the vertical direction, and a left guide protrusion 122r that protrudes to the left from the left end of the support portion 122f and extends in the vertical direction. I have.
- a spring support portion 124 that supports the compression spring 80 and a spring support portion 126 that supports the compression spring 82 are formed on the upper portion of the cell holder 116.
- the control circuit board 118 includes a through hole 128 arranged near the right end of the control circuit board 118 and a through hole 130 arranged near the left end of the control circuit board 118.
- the spring support portion 124 penetrates the through hole 128 and projects upward.
- the spring support portion 126 penetrates the through hole 130 and projects upward.
- the compression springs 80 and 82 urge the engaging member 122 upward with respect to the cell holder 116.
- a right guide portion 132 and a left guide portion 134 are formed on the inner surface of the upper casing 112 in the vicinity of the engaging opening 72.
- the right guide portion 132 accommodates the right support portion 122c of the engaging member 122 so as to be movable in the vertical direction and immovably in the front-rear direction and the right direction.
- the left guide portion 134 is movable in the vertical direction and accommodates the left support portion 122d of the engaging member 122 so as not to be movable in the front-rear direction and the left direction.
- a right front guide portion 136 and a left front guide portion 138 are formed on the inner surface near the front end of the upper casing 112.
- the right front guide portion 136 is movable in the vertical direction and holds the right guide protrusion 122q of the engaging member 122 immovably in the front-rear direction and the right direction.
- the left front guide portion 138 is movable in the vertical direction and holds the left guide protrusion 122r of the engaging member 122 immovably in the front-rear direction and the left direction.
- the engaging portion 122b protrudes from the engaging opening 72 to the outside of the upper casing 112, and the operating surface 122p of the operating portion 122e passes through the operating opening 74 of the upper casing 112.
- the right support portion 122c is housed in the right guide part 132
- the left support part 122d is housed in the left guide part 134
- the right guide protrusion 122q is held in the right front guide part 136
- the left guide protrusion 122r is housed. It is attached to the upper casing 112 so as to be held by the left front guide portion 138.
- the compression springs 80 and 82 urge the engaging member 122 upward with respect to the cell holder 116, whereby the engaging member is joined. 122 is pressed against the upper casing 112.
- the housing 18 (see FIG. 3) of the electric device 4 abuts on the right inclined surface 122k and the left inclined surface 122 m of the engaging member 122 and moves from the rear to the front. Then, the engaging member 122 is pushed downward against the urging force of the compression springs 80 and 82. After that, when the engaging groove 12 (see FIG. 3) of the electric device 4 moves above the engaging portion 122b of the engaging member 122, the engaging member 122 is pushed upward by the urging force of the compression springs 80 and 82. , The engaging portion 122b enters the engaging groove 12.
- the right engaging surface 122j and the left engaging surface 122l of the engaging member 122 are arranged so as to face the engaging surface 12a (see FIG. 3) of the electric device 4, so that the battery pack 102 is placed in the electric device. It is prohibited to slide forward with respect to 4. This prohibits the removal of the battery pack 102 from the electrical device 4.
- the user presses the operation surface 122p of the engaging member 122.
- the engaging member 122 is pushed downward against the urging force of the compression springs 80 and 82.
- the engaging portion 122b of the engaging member 122 is allowed to come out of the engaging groove 12 of the electric device 4 and slide the battery pack 102 forward with respect to the electric device 4. From this state, the user can remove the battery pack 102 from the electric device 4 by sliding the battery pack 102 forward with respect to the electric device 4.
- the battery pack 102 is removable by sliding it with respect to the battery pack mounting portion 6 of the electric device 4.
- the direction in which the battery pack 102 is slid when the battery pack 102 is removed from the battery pack mounting portion 6 is the forward direction
- the direction in which the battery pack 102 is slid when the battery pack 102 is attached to the battery pack mounting portion 6 is the rear direction.
- the battery pack 102 moves vertically to the casing 106, the battery cell 114 housed inside the casing 106, the control circuit board 118 (example of the circuit board) housed inside the casing 106, and the casing 106.
- the engaging member 122 that is held in a possible manner, the compression spring 80 that urges the engaging member 122 upward (example of the first urging member), and the compression spring 80 are arranged apart from each other in the left-right direction. It is provided with a compression spring 82 (an example of a second urging member) that urges the engaging member 122 upward. At least a part of the control circuit board 118 is arranged between the compression spring 80 and the compression spring 82.
- the engaging member 122 includes an engaging portion 122b that projects to the outside of the casing 106.
- the engaging portion 122b is along the vertical and horizontal directions, and has a right engaging surface 122j and a left engaging surface 122l (example of an engaging surface) that engage with the electric device 4.
- the right engaging surface 122j and the left engaging surface 122l are arranged behind the front end of the compression spring 80 and in front of the rear end of the compression spring 82.
- the right engaging surface 122j and the left engaging surface 122l are arranged behind the front end of the compression spring 82 and in front of the rear end of the compression spring 82.
- the compression spring 80 and the compression spring 82 arranged apart from each other in the left-right direction urge the engaging member 122 upward, and thus act on the engaging member 122.
- the forces can be balanced in the left-right direction, and the engaging member 122 can be prevented from tilting in the left-right direction with respect to the casing 106.
- the position in the front-rear direction of the point of action on which the urging force acts on the engaging member 122 can be brought close to the position in the front-rear direction of the engaging portion 122b.
- the compression spring 80 and the compression spring 82 are provided so as to eliminate the catching.
- the urging force can be applied to the engaging member 122.
- the right end of the compression spring 80 is located to the right of the right end of the right engagement surface 122j in the left-right direction. In the left-right direction, the left end of the compression spring 82 is arranged to the left of the left end of the left engagement surface 122l.
- the space between the compression spring 80 and the compression spring 82 is widely secured, it is possible to secure a wide space in which the elements and wiring can be mounted on the control circuit board 118. Further, since the distance between the compression spring 80 and the compression spring 82 is widely secured, it is easy to balance the urging force acting on the engaging member 122 in the left-right direction, and the engaging member 122 with respect to the casing 106. It is possible to effectively suppress tilting in the left-right direction.
- the left end of the compression spring 80 is located to the right of the right end of the right engagement surface 122j in the left-right direction. In the left-right direction, the right end of the compression spring 82 is arranged to the left of the left end of the left engagement surface 122l.
- the space between the compression spring 80 and the compression spring 82 is secured wider, it is possible to secure a wider space in which the elements and wiring can be mounted on the control circuit board 118. Further, since the distance between the compression spring 80 and the compression spring 82 is secured wider, it is easier to balance the urging force acting on the engaging member 122 in the left-right direction, and the engaging member 122 is attached to the casing 106. On the other hand, tilting in the left-right direction can be suppressed more effectively.
- the battery pack mounting portion 6 includes a device-side terminal 8.
- the control circuit board 118 includes a battery-side terminal 36 that mechanically engages with and electrically connects to the device-side terminal 8.
- the right end of the compression spring 80 is arranged to the right of the right end of the battery side terminal 36.
- the left end of the compression spring 82 is arranged to the left of the left end of the battery-side terminal 36.
- the space between the compression spring 80 and the compression spring 82 is widely secured, it is possible to secure a wide space in which the elements and wiring can be mounted on the control circuit board 118. Further, since the distance between the compression spring 80 and the compression spring 82 is widely secured, it is easy to balance the urging force acting on the engaging member 122 in the left-right direction, and the engaging member 122 with respect to the casing 106. It is possible to effectively suppress tilting in the left-right direction.
- the left end of the compression spring 80 is located to the right of the right end of the battery side terminal 36 in the left-right direction. In the left-right direction, the right end of the compression spring 82 is arranged to the left of the left end of the battery-side terminal 36.
- the space between the compression spring 80 and the compression spring 82 is secured wider, it is possible to secure a wider space in which the elements and wiring can be mounted on the control circuit board 118. Further, since the distance between the compression spring 80 and the compression spring 82 is secured wider, it is easier to balance the urging force acting on the engaging member 122 in the left-right direction, and the engaging member 122 is attached to the casing 106. On the other hand, tilting in the left-right direction can be suppressed more effectively.
- control circuit board 118 comprises a microcontroller 50 that controls the operation of the battery pack 102.
- the microcontroller 50 is arranged between the compression spring 80 and the compression spring 82.
- the microcontroller 50 is provided on the control circuit board 118 between the compression spring 80 and the compression spring 82, other elements and wiring are mounted on other parts of the control circuit board 118. It can be effectively used as a space to do.
- the casing 106 prohibits the engaging member 122 from moving in the anteroposterior direction and allows the engaging member 122 to move in the vertical direction, the right guide portion 132 and the left guide portion 134 (guides).
- the example of the part) is further provided.
- the compression spring 80 is arranged behind the front ends of the right guide portion 132 and the left guide portion 134, and in front of the rear ends of the right guide portion 132 and the left guide portion 134.
- the compression spring 82 is arranged behind the front ends of the right guide portion 132 and the left guide portion 134, and in front of the rear ends of the right guide portion 132 and the left guide portion 134.
- the position in the front-rear direction of the point of action of the urging force acting on the engaging member 122 from the compression spring 80 and the compression spring 82 is close to the position in the front-rear direction of the right guide portion 132 and the left guide portion 134. Can be made to. As a result, it is possible to prevent the engaging member 122 from tilting in the front-rear direction.
- the battery pack 102 is removable by sliding it against the battery pack mounting portion 6 of the electrical device 4.
- the direction in which the battery pack 102 is slid when the battery pack 102 is removed from the battery pack mounting portion 6 is the forward direction
- the direction in which the battery pack 102 is slid when the battery pack 102 is attached to the battery pack mounting portion 6 is the rear direction.
- the battery pack 102 has a casing 106, a battery cell 114 housed inside the casing 106, an engaging member 122 movably held in the casing 106 in the vertical direction, and an engaging member 122 facing upward.
- a compression spring 80 (example of the first urging member) to be urged and a compression spring 82 (an example of the first urging member) which is arranged apart from the compression spring 80 in the left-right direction and urges the engaging member 122 upward.
- An example of a second urging member is provided.
- the engaging member 122 includes an engaging portion 122b that projects to the outside of the casing 106.
- the engaging portion 122b is along the vertical and horizontal directions, and has a right engaging surface 122j and a left engaging surface 122l (example of an engaging surface) that engage with the electric device 4.
- the right engaging surface 122j and the left engaging surface 122l are arranged behind the front end of the compression spring 80 and in front of the rear end of the compression spring 82.
- the right engaging surface 122j and the left engaging surface 122l are arranged behind the front end of the compression spring 82 and in front of the rear end of the compression spring 82.
- the right end of the compression spring 80 is arranged to the right of the right end of the right engaging surface 122j.
- the left end of the compression spring 82 is arranged to the left of the left end of the left engagement surface 122l.
- the compression spring 80 and the compression spring 82 arranged apart from each other in the left-right direction urge the engaging member 122 upward, and thus act on the engaging member 122.
- the forces can be balanced in the left-right direction, and the engaging member 122 can be prevented from tilting in the left-right direction with respect to the casing 106.
- the position in the front-rear direction of the point of action on which the urging force acts on the engaging member 122 can be brought close to the position in the front-rear direction of the engaging portion 122b.
- the compression spring 80 and the compression spring 82 are provided so as to eliminate the catching.
- the urging force can be applied to the engaging member 122.
- the distance between the compression spring 80 and the compression spring 82 is widely secured, it is easy to balance the urging force acting on the engaging member 122 in the left-right direction, and the engaging member can be easily balanced. It is possible to effectively prevent the 122 from tilting in the left-right direction with respect to the casing 106.
- the battery pack 102 is removable by sliding it against the battery pack mounting portion 6 of the electrical device 4 provided with the device side terminal 8.
- the direction in which the battery pack 102 is slid when the battery pack 102 is removed from the battery pack mounting portion 6 is the forward direction
- the direction in which the battery pack 102 is slid when the battery pack 102 is attached to the battery pack mounting portion 6 is the rear direction.
- the battery pack 102 is attached to the casing 106, the battery cell 114 housed inside the casing 106, the battery-side terminal 36 that mechanically engages with the device-side terminal 8 and is electrically connected to the casing 106.
- the engaging member 122 held so as to be movable in the vertical direction, the compression spring 80 (example of the first urging member) for urging the engaging member 122 upward, and the compression spring 80 in the left-right direction. They are spaced apart and include a compression spring 82 (an example of a second urging member) that urges the engaging member 122 upward.
- the engaging member 122 includes an engaging portion 122b that projects to the outside of the casing 106.
- the engaging portion 122b is along the vertical and horizontal directions, and has a right engaging surface 122j and a left engaging surface 122l (example of an engaging surface) that engage with the electric device 4.
- the right engaging surface 122j and the left engaging surface 122l are arranged behind the front end of the compression spring 80 and in front of the rear end of the compression spring 82.
- the right engaging surface 122j and the left engaging surface 122l are arranged behind the front end of the compression spring 82 and in front of the rear end of the compression spring 82.
- the right end of the compression spring 80 is arranged to the right of the right end of the battery side terminal 36.
- the left end of the compression spring 82 is arranged to the left of the left end of the battery-side terminal 36.
- the compression spring 80 and the compression spring 82 arranged apart from each other in the left-right direction urge the engaging member 122 upward, and thus act on the engaging member 122.
- the forces can be balanced in the left-right direction, and the engaging member 122 can be prevented from tilting in the left-right direction with respect to the casing 106.
- the position in the front-rear direction of the point of action on which the urging force acts on the engaging member 122 can be brought close to the position in the front-rear direction of the engaging portion 122b.
- the compression spring 80 and the compression spring 82 are provided so as to eliminate the catching.
- the urging force can be applied to the engaging member 122.
- the distance between the compression spring 80 and the compression spring 82 is widely secured, it is easy to balance the urging force acting on the engaging member 122 in the left-right direction, and the engaging member can be easily balanced. It is possible to effectively prevent the 122 from tilting in the left-right direction with respect to the casing 106.
- the spring support portions 84, 86, 124, 126 are formed on the cell holders 30, 116, and the compression springs 80, 82 attach the engaging members 76, 122 upward to the cell holders 30, 116.
- the spring support portions 84, 86, 124, 126 are formed in the upper casing 26, 112 or the lower casing 24, 110, and the compression springs 80, 82 are the engaging members 76, 122. May be configured to urge upward with respect to the upper casings 26, 112 or the lower casings 24, 110.
- the first urging member is a compression spring 80
- the first urging member may be another type of spring such as a tension spring or a torsion spring.
- It may be an elastic member other than the spring, or it may be an urging member other than the elastic member.
- the second urging member is a compression spring 82
- the second urging member is another type of spring such as a tension spring or a torsion spring. It may be an elastic member of another type other than the spring, or may be an urging member of another type other than the elastic member.
- the circuit board is the control circuit boards 32 and 118 including the battery side terminal 36
- the circuit board may not have the battery side terminal 36.
- the circuit board may be a terminal circuit board that does not include the microcontroller 50 but includes the battery-side terminal 36.
- the circuit board may not include both the battery-side terminal 36 and the microcontroller 50.
- the circuit board may be an operation circuit board provided with a switch for receiving an operation input from the user, or may be a display circuit board provided with an indicator light for displaying to the user.
- the battery cells 28 and 114 are lithium ion battery cells has been described, but the battery cells 28 and 114 may be other types of secondary battery cells. Further, in the above embodiment, the case where the battery cells 28 and 114 have a substantially cylindrical shape has been described, but the battery cells 28 and 114 may have other shapes. The number of battery cells 28, 114 included in the battery packs 2, 102 may be different from the number of the above-described embodiment.
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Abstract
Description
図1に示す本実施例の電池パック2は、図2に示す電気機器4に取り付けて使用される。電気機器4は、電池パック2から供給される電力によって動作する電気機器である。電気機器4は、例えば、ドライバやドリル等のモータを動力源とする電動工具であってもよいし、草刈機やブロワ等のモータを動力源とする電動作業機であってもよい。あるいは、電気機器4は、ライトやラジオ、スピーカ等の、モータを備えていない電気機器であってもよい。あるいは、電気機器4は、電池パック2に対して電力を供給する充電器であってもよい。電池パック2の定格電圧は、例えば36Vである。電池パック2の定格容量は、例えば5.0Ahである。電池パック2の重量は、例えば、1.0kg-2.0kgの範囲内である。電池パック2の重量は、より具体的には、例えば1.33kgや1.9kgである。
図22に示す本実施例の電池パック102は、実施例1の電池パック2と同様に、電気機器4(図2、図3参照)に取り付けて使用される。電池パック102は、電気機器4の電池パック取付部6に対して所定のスライド方向にスライドさせることで、電池パック取付部6に取り付け可能である。以下では、電池パック102を電池パック取付部6に取り付ける際に電池パック102をスライドさせる方向を後方向といい、電池パック102を電池パック取付部6から取り外す際に電池パック102をスライドさせる方向を前方向という。また、電池パック102を電池パック取付部6に取り付けた状態で、電池パック102から見て電池パック取付部6が位置する方向を上方向といい、上方向の逆方向を下方向という。さらに、前後方向および上下方向に直交する方向を左右方向という。なお、以下の説明では、実施例1の電池パック2と同様の構成については、同様の参照符号を付して、詳細な説明は省略する。電池パック102の定格電圧は、例えば36Vである。電池パック102の定格容量は、例えば4.0Ahである。電池パック102の重量は、1.0kg以下であり、例えば1.0kgである。
上記の実施例では、バネ支持部84,86,124,126がセルホルダ30,116に形成されており、圧縮バネ80,82が係合部材76,122をセルホルダ30,116に対して上方に付勢する場合を例として説明したが、バネ支持部84,86,124,126が上ケーシング26,112または下ケーシング24,110に形成されており、圧縮バネ80,82が係合部材76,122を上ケーシング26,112または下ケーシング24,110に対して上方に付勢する構成としてもよい。
Claims (17)
- 電気機器の電池パック取付部に対してスライドさせることで着脱可能な電池パックであって、
前記電池パックを前記電池パック取付部から取り外す際に前記電池パックをスライドさせる方向を前方向とし、前記電池パックを前記電池パック取付部に取り付ける際に前記電池パックをスライドさせる方向を後方向とし、前記電池パックが前記電池パック取付部に取り付けられた状態で、前記電池パックから見て前記電池パック取付部が配置されている方向を上方向とし、上方向の逆方向を下方向とした場合に、
前記電池パックは、
ケーシングと、
前記ケーシングの内部に収容された電池セルと、
前記ケーシングの内部に収容された回路基板と、
前記ケーシングに上下方向に移動可能に保持された係合部材と、
前記係合部材を上方に向けて付勢する第1付勢部材と、
前記第1付勢部材に対して左右方向に離間して配置されており、前記係合部材を上方に向けて付勢する第2付勢部材を備えており、
前記回路基板の少なくとも一部が、前記第1付勢部材と前記第2付勢部材の間に配置されており、
前記係合部材が、前記ケーシングの外部に突出する係合部を備えており、
前記係合部が、上下方向および左右方向に沿っており、前記電気機器に係合する係合面を有しており、
前後方向に関して、前記係合面が、前記第1付勢部材の前端よりも後方で、かつ前記第1付勢部材の後端よりも前方に配置されており、
前後方向に関して、前記係合面が、前記第2付勢部材の前端よりも後方で、かつ前記第2付勢部材の後端よりも前方に配置されている、電池パック。 - 左右方向に関して、前記第1付勢部材の右端が、前記係合面の右端よりも右方に配置されており、
左右方向に関して、前記第2付勢部材の左端が、前記係合面の左端よりも左方に配置されている、請求項1の電池パック。 - 左右方向に関して、前記第1付勢部材の左端が、前記係合面の右端よりも右方に配置されており、
左右方向に関して、前記第2付勢部材の右端が、前記係合面の左端よりも左方に配置されている、請求項2の電池パック。 - 前記電池パック取付部が、機器側端子を備えており、
前記回路基板が、前記機器側端子に機械的に係合し、かつ電気的に接続する電池側端子を備えており、
左右方向に関して、前記第1付勢部材の右端が、前記電池側端子の右端よりも右方に配置されており、
左右方向に関して、前記第2付勢部材の左端が、前記電池側端子の左端よりも左方に配置されている、請求項1から3の何れか一項の電池パック。 - 左右方向に関して、前記第1付勢部材の左端が、前記電池側端子の右端よりも右方に配置されており、
左右方向に関して、前記第2付勢部材の右端が、前記電池側端子の左端よりも左方に配置されている、請求項4の電池パック。 - 前記回路基板が、前記電気機器への放電および/または前記電気機器からの充電のための電流が流れる電力経路を備えており、
前記電力経路が、前記第1付勢部材と前記第2付勢部材の間を通過している、請求項1から5の何れか一項の電池パック。 - 前記回路基板が、前記電池パックの動作を制御するマイクロコントローラを備えており、
前記マイクロコントローラが、前記第1付勢部材と前記第2付勢部材の間に配置されている、請求項1から6の何れか一項の電池パック。 - 前記ケーシングに回動可能に保持されており、ユーザによって操作される操作面を有する操作部材をさらに備えており、
前記操作部材は、前記ユーザによって前記操作面が押された時に、前記係合部材を下方に向けて押し下げる方向に回動する、請求項1から7の何れか一項の電池パック。 - 前記操作面が、前記ケーシングの前上面に配置されている、請求項8の電池パック。
- 前記操作部材が、左右方向に沿った回動軸周りに回動可能に前記ケーシングに保持されている、請求項9の電池パック。
- 前記係合部材が、被当接部を備えており、
前記操作部材が、前記被当接部の上方に配置された当接部を備えており、
前後方向に関して、前記当接部と前記被当接部が当接する位置が、前記第1付勢部材の前端よりも後方で、かつ前記第1付勢部材の後端よりも前方に配置されており、
前後方向に関して、前記当接部と前記被当接部が当接する位置が、前記第2付勢部材の前端よりも後方で、かつ前記第2付勢部材の後端よりも前方に配置されている、請求項6から10の何れか一項の電池パック。 - 前記被当接部が、左右方向に延びる棒状部を備えており、
前記当接部が、前記棒状部の上方に配置された当接片を備えている、請求項11の電池パック。 - 前記ケーシングが、前記係合部材の前後方向の移動を禁止し、前記係合部材の上下方向の移動を許容するガイド部をさらに備えており、
前後方向に関して、前記第1付勢部材が、前記ガイド部の前端よりも後方で、かつ前記ガイド部の後端よりも前方に配置されており、
前後方向に関して、前記第2付勢部材が、前記ガイド部の前端よりも後方で、かつ前記ガイド部の後端よりも前方に配置されている、請求項1から12の何れか一項の電池パック。 - 電気機器の電池パック取付部に対してスライドさせることで着脱可能な電池パックであって、
前記電池パックを前記電池パック取付部から取り外す際に前記電池パックをスライドさせる方向を前方向とし、前記電池パックを前記電池パック取付部に取り付ける際に前記電池パックをスライドさせる方向を後方向とし、前記電池パックが前記電池パック取付部に取り付けられた状態で、前記電池パックから見て前記電池パック取付部が配置されている方向を上方向とし、上方向の逆方向を下方向とした場合に、
前記電池パックは、
ケーシングと、
前記ケーシングの内部に収容された電池セルと、
前記ケーシングに上下方向に移動可能に保持された係合部材と、
前記係合部材を上方に向けて付勢する第1付勢部材と、
前記第1付勢部材に対して左右方向に離間して配置されており、前記係合部材を上方に向けて付勢する第2付勢部材を備えており、
前記係合部材が、前記ケーシングの外部に突出する係合部を備えており、
前記係合部が、上下方向および左右方向に沿っており、前記電気機器に係合する係合面を有しており、
前後方向に関して、前記係合面が、前記第1付勢部材の前端よりも後方で、かつ前記第1付勢部材の後端よりも前方に配置されており、
前後方向に関して、前記係合面が、前記第2付勢部材の前端よりも後方で、かつ前記第2付勢部材の後端よりも前方に配置されており、
左右方向に関して、前記第1付勢部材の右端が、前記係合面の右端よりも右方に配置されており、
左右方向に関して、前記第2付勢部材の左端が、前記係合面の左端よりも左方に配置されている、電池パック。 - 機器側端子を備える電気機器の電池パック取付部に対してスライドさせることで着脱可能な電池パックであって、
前記電池パックを前記電池パック取付部から取り外す際に前記電池パックをスライドさせる方向を前方向とし、前記電池パックを前記電池パック取付部に取り付ける際に前記電池パックをスライドさせる方向を後方向とし、前記電池パックが前記電池パック取付部に取り付けられた状態で、前記電池パックから見て前記電池パック取付部が配置されている方向を上方向とし、上方向の逆方向を下方向とした場合に、
前記電池パックは、
ケーシングと、
前記ケーシングの内部に収容された電池セルと、
前記機器側端子に機械的に係合し、かつ電気的に接続する電池側端子と、
前記ケーシングに上下方向に移動可能に保持された係合部材と、
前記係合部材を上方に向けて付勢する第1付勢部材と、
前記第1付勢部材に対して左右方向に離間して配置されており、前記係合部材を上方に向けて付勢する第2付勢部材を備えており、
前記係合部材が、前記ケーシングの外部に突出する係合部を備えており、
前記係合部が、上下方向および左右方向に沿っており、前記電気機器に係合する係合面を有しており、
前後方向に関して、前記係合面が、前記第1付勢部材の前端よりも後方で、かつ前記第1付勢部材の後端よりも前方に配置されており、
前後方向に関して、前記係合面が、前記第2付勢部材の前端よりも後方で、かつ前記第2付勢部材の後端よりも前方に配置されており、
左右方向に関して、前記第1付勢部材の右端が、前記電池側端子の右端よりも右方に配置されており、
左右方向に関して、前記第2付勢部材の左端が、前記電池側端子の左端よりも左方に配置されている、電池パック。 - 電気機器の電池パック取付部に対してスライドさせることで着脱可能な電池パックであって、
前記電池パックは、
ケーシングと、
前記ケーシングの外部に突出する係合部を有する係合部材と、
前記ケーシングの外部に露出する操作面を有する操作部材を備えており、
前記係合部が、前記操作面が押圧された時に、前記ケーシングの内部に向けて移動し、
前記操作面に、規則的に配置された凸形状および/または凹形状からなる滑り止め部が形成されており、
前記滑り止め部が、前記操作面において、前記係合部に近い側に配置されている、電池パック。 - 前記滑り止め部が、前記電池パックを前記電池パック取付部から取り外す際に前記電池パックをスライドさせる方向に対して略直交する方向に延びる複数の凸条および/または凹条からなる、請求項16の電池パック。
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JP2012221780A (ja) * | 2011-04-11 | 2012-11-12 | Max Co Ltd | 電池パック、電動工具及び充電器 |
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JP2005174758A (ja) * | 2003-12-11 | 2005-06-30 | Makita Corp | 組合せ電池を収容するケーシングとそれを備える電池パック |
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