WO2019198897A1 - Battery pack and power supply device including battery pack - Google Patents
Battery pack and power supply device including battery pack Download PDFInfo
- Publication number
- WO2019198897A1 WO2019198897A1 PCT/KR2018/013454 KR2018013454W WO2019198897A1 WO 2019198897 A1 WO2019198897 A1 WO 2019198897A1 KR 2018013454 W KR2018013454 W KR 2018013454W WO 2019198897 A1 WO2019198897 A1 WO 2019198897A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fixing pin
- bottom portion
- battery pack
- battery
- battery cell
- Prior art date
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Classifications
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- 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
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- 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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- 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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
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- 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
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery pack and a power supply comprising a battery pack.
- a secondary battery is a battery that can be charged and discharged, unlike a primary battery that is not rechargeable.
- Secondary batteries are used as energy sources for mobile devices, electric vehicles, hybrid cars, electric bicycles, uninterruptible power supplies, etc., and may also be used in the form of a single battery, depending on the type of external devices. It is also used in the form of a module that connects the batteries of the unit into a unit.
- a small mobile device such as a mobile phone can operate for a predetermined time with the output and capacity of a single battery.
- the module type including the battery is preferred, and the output voltage or the output current can be increased according to the number of built-in batteries.
- One embodiment of the present invention includes a battery pack and a power supply device having an improved energy density relative to the same volume.
- the battery pack of the present invention is the battery pack of the present invention.
- a plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;
- a side plate including a side portion extending across the side of the battery cell, and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell;
- a fixing pin fitted to the bottom portion so as to protrude from the bottom portion in a direction opposite to the battery cell.
- the present invention by improving the structure of the fixing pin for providing a mounting structure of the battery pack, it is possible to reduce the height and width of the battery pack, and to include a larger number of battery cells for the same volume, the same mounting By mounting a larger number of battery packs compactly over an area, a battery pack and a power supply having a high energy density relative to the same volume can be provided.
- FIG. 1 is a perspective view of a power supply device according to a preferred embodiment of the present invention.
- FIG. 1 different exploded perspective views of the power supply shown in FIG. 1 are shown.
- FIG. 4 shows a perspective view of the battery cell shown in FIG. 1.
- FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 1.
- FIG. 6 is a perspective view for explaining the coupling between the fixing pin and the bottom portion.
- FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6.
- FIG. 8 is a view schematically illustrating a coupling process of the fixing pin illustrated in FIG. 6.
- FIG. 9 is a perspective view illustrating the fixing pin of FIG. 6.
- FIG. 10 shows a coupling structure of a fixing pin according to a comparison compared with the present invention.
- FIG. 11 is a view illustrating a bottom surface of the battery pack shown in FIG. 2, illustrating a layout of the fixing pins.
- FIG. 12 a modified embodiment of the power supply shown in FIG. 5 is shown.
- Figure 13 shows a power supply according to a comparative example compared with the present invention.
- the battery pack of the present invention is the battery pack of the present invention.
- a plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;
- a side plate including a side portion extending across the side of the battery cell, and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell;
- a fixing pin fitted to the bottom portion so as to protrude from the bottom portion in a direction opposite to the battery cell.
- the bottom portion may be formed with a through hole for fitting the fixing pin.
- the fixing pin may be fitted into the through hole from an upper surface of the bottom portion facing the battery cell, and may be pressed against the upper surface of the bottom portion surrounding the through hole.
- the fixing pin includes a relatively large diameter head portion and a relatively small diameter pillar portion
- the head part may be press-fitted with respect to an upper surface of the bottom part surrounding the through hole.
- the head portion of the fixing pin may be formed with a press-in projection projecting toward the top of the bottom portion.
- the fixing pin and the bottom portion may be integrally coupled.
- the fixing pin and the bottom portion may be divided by a boundary line that can distinguish each other, and may be discontinuously connected with the boundary line therebetween.
- the fixing pin and the bottom portion may be formed of different materials.
- an upper surface of the fixing pin may be formed substantially flat with an upper surface of the bottom portion deviating from the fixing pin, or an upper surface of the fixing pin may be formed at a level lower than an upper surface of the bottom portion deviating from the fixing pin. have.
- the fixing pin may be drawn downward in the thickness direction of the bottom portion with respect to the upper surface of the bottom portion which is out of the fixing pin.
- an upper surface of the fixing pin and an upper surface of the bottom portion deviating from the fixing pin may support the bottom surface of the battery cell together.
- the fixing pins may be disposed in plural in intermittent positions so as to be spaced apart from each other along the longitudinal direction of the bottom portion.
- the fixing pin may be formed at a central position along the length direction of the bottom portion.
- the fixing pin may be formed at a first position between both end positions and the center position in addition to the center position along the length direction of the bottom portion.
- the first position may be a position relatively closer to a center position than a position at both ends in the length direction of the bottom portion.
- the fixing pin may be formed to be concentrated at a central position rather than at both end positions along the length of the bottom portion.
- the bottom portion may extend across an edge adjacent to a side plate of a bottom surface of the battery cell
- the central position of the bottom surface may be exposed from the bottom portion.
- a plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;
- a side plate including a side portion extending across the side of the battery cell, and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell;
- the depth of the fixing hole may be formed deeper than the protruding length of the fixing pin protruding from the bottom portion.
- FIG. 1 is a perspective view of a power supply device according to a preferred embodiment of the present invention. 2 and 3, different exploded perspective views of the power supply shown in FIG. 1 are shown. 4 shows a perspective view of the battery cell shown in FIG. 1. 5 is a cross-sectional view taken along the line V-V of FIG. 1.
- a power supply apparatus may include a battery pack 100 and a mounting panel 200 on which the battery pack 100 is mounted.
- the battery pack 100 is shown to form a power supply with the mounting panel 200, the battery pack 100 of the present invention, the mounting panel 200 It may not be mounted and may be formed in a configuration independent of the mounting panel 200. That is, in the drawings attached to the present specification, the battery pack 100 is illustrated with the mounting panel 200, but technical features related to the battery pack 100 described below may include the mounting panel 200. The same may be applied to the battery pack 100 that is independently configured, and the battery pack 100 that is independently configured without being mounted to the mounting panel 200 may be included in the technical scope of the present invention.
- the battery pack 100 of the present invention may be mounted inside a device such as an electric vehicle that receives driving power from the battery pack 100, and may be mounted on the mounting panel 200 of the electric vehicle.
- the battery pack 100 mounted on the mounting panel 200 may form a power supply device of the present invention, and may form a power supply device for supplying driving power for an electric vehicle.
- the battery pack 100 may include a plurality of battery cells 10 and side plates 50 disposed on both sides of the battery cells 10 with the plurality of battery cells 10 interposed therebetween.
- the battery pack 100 may include an end block 40 disposed at both ends of the group of battery cells 10 along the arrangement direction of the battery cells 10.
- the battery cell 10 includes a terminal surface T on which an electrode terminal 11 is formed, a bottom surface B formed on an opposite side of the terminal surface T, and the terminal surface ( Main surface (M) connected between T) and the bottom surface (B) but having a relatively large area, and a side (S) formed between the terminal surface (T) and the bottom surface (B) but having a relatively narrow area (S). ) May be included.
- the battery cell 10 may include a terminal surface T, a bottom surface B, a pair of main surfaces M, and a pair of side surfaces S, and may have a substantially rectangular parallelepiped shape.
- the battery cells 10 may be arranged in a row together with the plurality of battery cells 10, and the plurality of battery cells 10 may be arranged such that neighboring battery cells 10 face the main surface M of each other. Can be arranged.
- the side plates 50 may extend across the plurality of battery cells 10 along the arrangement direction of the battery cells 10, and may be paired to both sides of the battery cells 10. It can be formed.
- the side plate 50 extends across side surfaces 51 extending across side surfaces S of the plurality of battery cells 10 and bottom surfaces B of the plurality of battery cells 10.
- the bottom portion 55 may include a top portion 57 extending across the terminal surfaces T of the plurality of battery cells 10.
- the side part 51 may extend across the side surfaces S of the plurality of battery cells 10, and end blocks 40 surrounding the outer circumference of the battery cell 10 together with the side parts 51.
- the plurality of battery cells 10 can be structurally bound and modularized by The side part 51 structurally binds the plurality of battery cells 10 together with the end block 40, and thermally contacts the side surfaces S of the plurality of battery cells 10 so that the plurality of battery cells ( 10) may be promoted.
- the side part 51 may be formed to surround the outer circumference of the battery cell 10 to structurally bind the plurality of battery cells 10, and may have a side surface of the battery cell 10. It extends across S and thermally contacts the side surface S of the battery cell 10 to function as a heat sink of the plurality of battery cells 10. In addition, the side part 51 thermally contacts the side surfaces S of the plurality of battery cells 10 to prevent heat from accumulating in some battery cells 10 or local degradation of some battery cells 10, It may serve to spread heat to other battery cells 10 around.
- the bottom part 55 may be bent inward from the side part 51 toward the battery cell 10 to extend to surround the battery cell 10, and the side surface S of the battery cell 10 may be extended. It may be bent from the side portion 51 facing the surface B may be bent to face the bottom surface (B) of the battery cell (10).
- the bottom portion 55 supports the bottom surface B of the battery cell 10 while extending across the bottom surfaces B of the plurality of battery cells 10 along the arrangement direction of the battery cells 10. Can be.
- the bottom portion 55 may extend across both edges adjacent to the side plate 50 of the bottom surface B of the battery cell 10 to expose the center of the bottom surface B.
- FIG. The bottom portion 55 does not cover the entire bottom surface B of the battery cell 10, but covers an edge adjacent to the side plate 50 but exposes the center of the bottom surface B, thereby A structure that is more advantageous for heat dissipation can be provided.
- the bottom part 55 may be fitted with a fixing pin 80 for mounting or fixing the position of the battery pack 100. More specifically, the bottom portion 55 may be fitted so that the fixing pin 80 protrudes, and the fixing pin 80 may be arranged in plurality spaced apart from each other along the longitudinal direction of the bottom portion 55. Can be. The fixing pin 80 may protrude from the bottom portion 55 in a direction opposite to the battery cell 10. The fixing pin 80 may provide a mounting structure of the battery pack 100 and provide a coupling structure with a device that receives driving power from the battery pack 100.
- the battery pack 100 may be mounted inside a device such as an electric vehicle, and may be mounted on a mounting panel 200 of the electric vehicle.
- the battery pack 100 mounted on the mounting panel 200 by using the fixing pin 80 may form the power supply device of the present invention and form a power supply device for supplying driving power for an electric vehicle. Can be.
- the fixing pin 80 is inserted into the fixing groove 200 ′ of the mounting panel 200 to fix the position of the battery pack 100 and to form physical interference between the battery pack 100 and the mounting panel 200. As a result, the flow and vibration of the battery pack 100 can be suppressed, and the battery pack 100 can be firmly fixed on the mounting panel 200.
- the fixing pin 80 may be arranged in a plurality of spaced apart from each other along the longitudinal direction of the bottom portion 55, the interval or position of the fixing pin 80 is effective for the flow or vibration of the battery pack 100 Can be designed to be suppressed. This will be described later in more detail.
- the top part 57 may be bent inwardly from the side part 51 toward the battery cell 10, and may be bent inwardly so as to surround the battery cell substantially in parallel with the bottom part 55. . More specifically, the top part 57 may be bent from the side part 51 facing the side surface S of the battery cell 10 to be bent to face the terminal surface T of the battery cell 10.
- the top portion 57 may support the terminal surface T of the battery cell 10 while extending across the terminal surfaces T of the plurality of battery cells 10 along the arrangement direction of the battery cell 10. have.
- the top portion 57 extends across both edges adjacent to the side plate 50 of the terminal surface T of the battery cell 10 to expose the center of the terminal surface T on which the electrode terminal 11 is formed. Can be. As described above, the top portion 57 does not cover the entire terminal surface T of the battery cell 10, but the edge adjacent to the side plate 50 is covered, but the center of the terminal surface T is exposed to thereby expose the battery cell 10.
- the electrode terminals 11) may be exposed to the outside of the battery pack 100, and the plurality of battery cells 10 may be electrically connected to each other through the electrode terminals 11 exposed to the outside of the battery pack 100. Can be.
- the top portion 57 may promote heat dissipation to the terminal surface T on which the electrode terminals 11 having a relatively high heat generation due to the concentration of charge and discharge currents are formed.
- the top portion 57 forms thermal contact with the terminal surface T on which the electrode terminal 11 is formed, and extends to the side portion 51 that occupies a relatively large heat dissipation area, thereby extending the terminal surface T.
- the top part 57 is a side part 51 that can provide a heat sink having the largest area among the side plates 50 from the terminal surface T of the battery cell 10 in which the electrode terminal 11 is formed. It is possible to form a heat dissipation path to be connected.
- End blocks 40 may be disposed at both ends of the group of battery cells 10 along the arrangement direction of the battery cells 10.
- the end block 40 may structurally bind the plurality of battery cells 10 while surrounding the outer periphery of the plurality of battery cells 10 together with the side plate 50.
- the end block 40 may be formed of a hard resin material to firmly bind the plurality of battery cells 10, and effectively deform deformation such as swelling of the battery cells 10. By suppressing, the fall of the electrical output performance by the shape deformation can be prevented.
- the end block 40 may be provided with a fastening hole 40 ⁇ to which a bushing member (not shown) may be fitted, and the bushing member (not shown) may pass through the fastening hole 40 ⁇ to mount a mounting panel ( By being inserted into the battery pack 200, the battery pack 100 may be fixed on the mounting panel 200.
- the pack 100 may be fixed on the mounting panel 200, and the battery pack 100 may be fixed on the mounting panel 200 by a bushing member (not shown) and the fixing pin 80. 200).
- the end block 40 may be formed of an insulating resin material to provide a position of the output terminal 15.
- the plurality of battery cells 10 forming the battery pack 100 may be electrically connected to each other by a bus bar (not shown) that electrically connects electrode terminals 11 of different battery cells 10 to each other.
- an electrical output may be provided through the output terminal 15.
- the fixing pin 80 of the battery pack 100 is fitted into the fixing groove 200 ′ of the mounting panel 200, thereby mounting the mounting panel.
- the battery pack 100 is fixed on the position 200, and the mounting of the battery pack 100 may be performed.
- the fixing pin 80 may protrude from the bottom portion 55 in the opposite direction to the battery cell 10, and the protruding length f1 from the bottom portion 55 may be defined by the battery pack 100. It may be formed to a length sufficient for fixing the position.
- the depth f2 of the fixing groove 200 ′ may be formed to correspond to the protruding length f1 of the fixing pin 80.
- the depth f2 of the fixing groove 200 ′ may be formed deeper than the protruding length f1 of the fixing pin 80.
- the depth f2 of the fixing groove 200 ′ is formed deeper than the protruding length f1 of the fixing pin 80, so that the bottom surface of the bottom portion 55 forming the lower portion of the battery pack 100 is formed.
- Depth f2 of the fixing groove 200 ′ and the fixing pins 200 are in contact with the mounting panel 200 and the battery pack 100 is lifted over the mounting panel 200 so that the height of the power supply does not increase. To allow sufficient margin between the protruding lengths f1 of 80). If the battery pack 100 does not come into close contact with the mounting panel 200 and is lifted over the mounting panel 200, the height of the power supply increases and the energy density of the unit volume decreases.
- FIG. 6 is a perspective view for explaining the coupling between the fixing pin and the bottom portion.
- FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6.
- FIG. 8 is a view schematically illustrating a coupling process of the fixing pin illustrated in FIG. 6.
- FIG. 9 is a perspective view illustrating the fixing pin of FIG. 6.
- the fixing pin 80 may be formed to protrude from the bottom portion 55 and may be integrally formed with the bottom portion 55.
- the fixing pin 80 and the bottom portion 55 are integrally formed, so that the fixing pin 80 and the bottom portion 55 are firmly coupled to each other, so that the fixing pin 80 and the bottom portion 55 are connected to each other. It may mean that they are not separated from each other without physical damage.
- the fixing pin 80 may be integrally formed with the bottom part 55, but may be formed of a component different from the bottom part 55, and may be integrally coupled to the bottom part 55.
- the fixing pin 80 and the bottom portion 55 are formed from one raw material and connected in a continuous form, that is, in a seamless form, without boundary to each other.
- the fixing pin 80 and the bottom part 55 may be divided by a boundary line that can distinguish each other, and have a structure discontinuously connected with the boundary line therebetween.
- the fixing pin 80 and the bottom portion 55 may be formed of different materials, and the fixing pin 80 may be formed of steel or stainless steel material, and the bottom portion 55 Or may be formed of a material different from that of the side plate 50.
- the fixing pin 80 is inserted into the through hole 50 ′ provided in the bottom part 55, and is pressed at a high pressure around the through hole 50 ′ and pressed against the periphery of the through hole 50 ′.
- the bottom portion 55 may be integrally coupled with the furnace. For example, as shown in FIG. 8, in a state where the fixing pin 80 is loosely fitted in the through hole 50 ′, a punch P is punched around the through hole 50 ′ in which the fixing pin 80 is inserted. ) And the anvil (A, anvil), the pressing pin (P, punch) to provide a high pressure by pressing the fixing pin 80 against the bottom portion 55 around the through hole (50 ⁇ )
- the fixing pin 80 and the bottom portion 55 may be integrally coupled to each other.
- the coupling between the fixing pin 80 and the bottom portion 55 is made by press-fitting based on a high pressure
- the fixing pin 80 is a through hole (50 ') by the high pressure of the punch (P, punch)
- P, punch punch
- the fixing pin 80 is inserted into the through hole 50 ′ from the top surface 55 a of the bottom portion 55 and surrounds the bottom hole 55 ′. It may be pressed against the top surface 55a of the), and the fixing pin 80 is pressed against the top surface 55a of the bottom portion 55, the firm coupling between the fixing pin 80 and the bottom portion 55 is made Can be.
- the upper surface 55a of the bottom portion 55 may mean a surface of the bottom portion 55 that faces the battery cell 10.
- the fixing pin 80 may be formed such that a head portion 85 having a relatively large diameter and a pillar portion 81 having a relatively small diameter are coaxially connected to each other. .
- the head portion 85 may be formed to have a relatively large diameter and may be pressed against the periphery of the through hole 50 ′ of the bottom portion 55.
- a plurality of indentation protrusions 88 may be formed in the head portion 85, and the indentation protrusions 88 may be formed in a boundary area of the head portion 85 with the pillar portion 81.
- the pillar portion 81 may be formed to have a relatively small diameter, and may be inserted into the fixing groove 200 ′ of the mounting panel 200 by passing through the through hole 50 ′ of the bottom portion 55.
- the head portion 85 is fitted into the through hole 50 ′ from the top surface 55 a of the bottom portion 55 and surrounds the bottom hole 55 ′. It may be pressed against the upper surface (55a) of the, and the head portion 85 may be formed with a plurality of indentation projections 88 protruding toward the upper surface (55a) of the bottom portion (55).
- the indentation protrusion 88 may be firmly fixed to the upper surface 55a of the bottom portion 55 surrounding the through hole 50 ⁇ .
- the indentation protrusions 88 may be arranged in a radial manner along a circumference of the head portion 85 to be formed in plural. As shown in FIG.
- the indentation trace 88 ′ by the indentation protrusion 88 of the fixing pin 80 may be formed around the through hole 50 ′ where the fixing pin 80 is pressed.
- a plurality of indentation marks 88 ⁇ may be formed radially along the periphery of the through hole 50 ⁇ .
- the fixing pin 80 and the bottom portion 55 does not form a screw coupling, but is press-fitted by the high pressure of the punch (P, punch), the fixing pin 80 No spiral is formed on the sidewall of the through hole 50 '.
- the bottom portion 55 extends integrally from the side portion 51, and the side plate 50 including the bottom portion 55 and the side portion 51 may be formed of a thin metal plate, It is not easy to form a spiral in the through hole 50 'of the bottom portion 55 having a thickness.
- the bottom portion 55 is formed in a press-fitting manner based on the high pressure of the punch P without applying screwing to the bottom portion 55 having a thin thickness and the fixing pin 80. ) And fixing pins 80 are coupled to each other.
- the thickness of the bottom portion 55 is increased.
- the height of the battery cell 10 supported on the bottom part 55 is increased, and as a result, the height of the entire battery pack 100 is increased, which is not preferable in terms of energy density to unit volume.
- the fixing pin 80 may not form an additional height above the top surface 55a of the bottom portion 55 that is beyond the fixing pin 80.
- the fixing pin 80 may include a head portion 85 and a pillar portion 81, and the upper surface 85a of the head portion 85 is bottomed out of the head portion 85.
- the upper surface 55a of the upper part 55a of the part 55 forms the same flat plane, or the upper surface 85a of the head part 85 is the upper surface 55a of the bottom part 55 outside the head part 85.
- Lower levels can be formed.
- the upper surface 55a of the bottom portion 55 may mean a surface of the bottom portion 55 that faces the battery cell 10.
- the upper surface of the fixing pin 80 or the upper surface 85a of the head portion 85 may mean a surface of the fixing pin 80 or the head portion 85 facing the battery cell 10.
- the upper surface 55a of the bottom portion 55 deviating from the fixing pin 80 or the upper surface 55a of the bottom portion 55 deviating from the head portion 85 is the upper surface 55a of the bottom portion 55. It may mean a non-compression surface which is not compressed by the fixing pin 80 or the head 85, and may mean a surface that is not flattened by the fixing pin 80 or the head 85. have.
- the head portion 85 of the fixing pin 80 is formed on the upper surface 55a of the bottom portion 55 surrounding the through hole 50 ⁇ . Is pressed against the upper surface 55a of the bottom portion 55 outside the head portion 85, that is, the upper surface 55a of the flat bottom portion 55 It may be drawn downward by a predetermined depth along the thickness direction of the part 55. Accordingly, the top surface 85a of the head portion 85 is the same as the top surface 55a of the bottom portion 55 outside the head portion 85 or of the bottom portion 55 outside the head portion 85. The level lower than the upper surface 55a can be formed.
- FIG. 10 shows a coupling structure of a fixing pin according to a comparison compared with the present invention.
- the head portion 5 of the fixing pin 8 is padded over the top surface 55a of the bottom portion 55 surrounding the through hole 50 '. Over, the head portion 5 forms an additional height h from the top surface 55a of the bottom portion 55 and of the head portion 5 protruding from the top surface 55a of the bottom portion 55.
- the upper surface 5a lifts the battery cell 10 to increase the height of the battery pack 100 and lower the energy density relative to the unit volume of the battery pack 100.
- the head portion 85 of the fixing pin 80 is pressed against the upper surface 55a of the bottom portion 55 surrounding the through hole 50 ′.
- the bottom portion 55 is drawn downward along a thickness direction of the bottom portion 55 by a predetermined depth.
- the pads are not coupled in a form that is padded over the top surface 55a of the bottom portion 55. Accordingly, the upper surface 85a of the head portion 85 and the upper surface 55a of the bottom portion 55 deviating from the head portion 85 are formed to be substantially flat or the upper surface 85a of the head portion 85.
- the head portion 85 May form a level lower than the top surface 55a of the bottom portion 55 out of the head portion 85. That is, at least the top surface 85a of the head portion 85 may not protrude upward from the top surface 55a of the bottom portion 55 that is out of the head portion 85.
- the upper surface 85a of the head portion 85 and the upper surface 55a of the bottom portion 55 are formed to be substantially flat so that the battery The cells 10 can be supported together.
- the height of the battery pack 100 varies depending on the relative height of the upper surface 55a of the bottom portion 55 and the upper surface 85a of the fixing pin 80 or the head portion 85.
- the energy density relative to the unit volume of the pack 100 will vary.
- the fixing pin 80 or the head portion 85 of the fixing pin 80 or the head portion 85 does not protrude from the upper surface 55a of the bottom portion 55.
- the upper surface 85a is formed to be substantially flat with the upper surface 55a of the bottom portion 55 or is formed at a level lower than the upper surface 55a of the bottom portion 55, so that the battery is coupled with the fixing pin 80.
- the energy density of the pack 100 does not decrease.
- FIG. 11 is a view illustrating a bottom surface of the battery pack shown in FIG. 2, illustrating a layout of the fixing pins.
- the fixing pin 80 may be formed in plural in an intermittent position so as to be spaced apart from each other along the longitudinal direction of the bottom portion 55.
- the fixing pin 80 serves to fix the position of the battery pack 100 with respect to the mounting panel 200 on which the battery pack 100 is mounted, and thus, the center position C of the battery pack 100 that is vulnerable to vibration. Can be placed intensively.
- the fixing pin 80 may be disposed in a central position C, rather than both end positions E along the longitudinal direction of the bottom portion 55, and both end positions of the bottom portion 55. Rather than (E) or a position close thereto, the center portion C of the bottom portion 55 or a position closer thereto may be disposed relatively.
- the maximum amplitude may be generated at the center position of the string, and thus, the center position C of the battery pack 100, that is, the battery cell 10.
- a fixing pin 80 is preferably formed at the central position C of at least the battery pack 100, that is, at the central position C along the longitudinal direction of the bottom portion 55 crossing the battery cell 10.
- the fixing pin 80 may be formed in a symmetrical position with respect to the fixing pin 80 at the central position C.
- Fixing pins 80 may be formed at both end positions E in the longitudinal direction of the battery pack 100, that is, at both end positions E in the longitudinal direction of the bottom part 55.
- a bushing member (not shown) is inserted into the end block 40 at both end positions E along the arrangement direction of the battery cell 10 so as to pass through the fastening hole 40 ⁇ .
- the bushing member (not shown) may be inserted into the mounting panel 200 by passing through the fastening hole 40 ′, thereby fixing both end positions E along the length direction of the battery pack 100. Therefore, separate fixing pins 80 may not be formed at both end positions E of the battery pack 100.
- the fixing pin 80 and the bushing member may together fix the battery pack 100 on the mounting panel 200, and mount the battery pack 100 on the mounting panel 200. have.
- the fixing pin 80 the central position (C) more susceptible to vibration than the end position (E) in the longitudinal direction of the battery pack 100, that is, the longitudinal direction of the bottom portion (55) Can be placed relatively close to
- the distance between the fixing pins 80 adjacent to each other is centered from both end positions E.
- FIG. It may decrease gradually as it goes to position (C). That is, the fixing pin 80 may be formed more densely at a tighter spacing at the center position C than at both end positions E.
- the fixing pin 80 in addition to the center position (C) along the longitudinal direction of the battery pack 100, the first position (between the end position (E) and the center position (C) ( Also formed in the L1, it is possible to stably position the high output battery pack 100 including a relatively large number of battery cells 10 extending.
- the first position L1 may be designed closer to the center position C than the both ends position E in the longitudinal direction of the battery pack 100 so as to effectively suppress the vibration of the battery pack 100. have.
- FIG. 12 a modified embodiment of the power supply shown in FIG. 5 is shown.
- the power supply apparatus of the present invention may include a battery pack 100 and a mounting panel 200 on which the battery pack 100 is mounted.
- the mounting panel 200 may be provided in a device in which the battery pack 100 is mounted and receives driving power from the battery pack 100, for example, an electric vehicle.
- a plurality of battery packs 100 may be mounted in parallel on one mounting panel 200.
- a plurality of battery packs 100 may be mounted in one mounting panel 200 in parallel, and when a high output such as an electric vehicle is required Two or more battery packs 100 may be mounted.
- the battery pack 100 may be fixed on the mounting panel 200 through a fixing pin 80 fitted to the side plate 50, and in particular, the side part 51 of the side plate 50.
- the fixing pin 80 By forming the fixing pin 80 on the side of the bottom portion 55 which is bent inwardly to surround the battery cells 10, the battery packs 100 mounted adjacent to each other on one mounting panel 200 are concentrated. It can be compactly mounted in the form.
- the first interval d1 between the battery packs 100 mounted adjacent to each other may be sufficient to prevent interference between the battery packs 100, for example, physical interference, thermal interference, or electrical interference. It is sufficient to have a clearance of, and it is not necessary to set the first interval d1 larger than necessary.
- Figure 13 shows a power supply according to a comparative example compared with the present invention.
- the power supply apparatus includes a mounting panel 200 and a plurality of battery packs 100 ⁇ mounted on the mounting panel 200.
- the fixing member 18 for fixing the position of the battery pack 100 ′ passes through the wing portion 58 ′ of the side plate 50 ′ and fixes the fixing groove 200 ′ of the mounting panel 200.
- the fixing member 18 is not fitted to the bottom portion 55 'bent inward so as to surround the battery cell 10 from the side portion 51', and the battery cell from the side portion 51 '. It is fitted to a separate wing portion 58 ⁇ which is bent in an outward direction opposite to 10. Accordingly, a separate wing 58 'is formed in an outer direction of the battery pack 100', and the battery pack 100 is formed by wings 58 'formed at both sides of the battery pack 100'. ) Width size is increased.
- the second interval d2 between the battery packs 100 'neighboring each other needs to be increased by the wings 58' formed on both sides of the battery pack 100 '.
- the plurality of battery packs 100 ⁇ may not be mounted in a compact form, so that the number of battery packs 100 ⁇ that can be mounted on the mounting panel 200 having the same area is reduced, and the energy density is lowered. .
- the present invention can be applied to a battery pack as an energy source capable of charging and discharging and various devices using the battery pack as a driving power source.
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Abstract
A battery pack of the present invention comprises: a plurality of battery cells each including a terminal surface on which an electrode terminal is formed, a bottom surface formed on a side opposite to the terminal surface, and a side surface between the terminal surface and the bottom surface; a side plate including a side part, which extends across the side surface of the battery cell, and a bottom part bent from the side part to surround the battery cell and extending across the bottom surface of the battery cell; and a fixing pin fitted into the bottom part to protrude from the bottom part in a direction opposite to the battery cell. The present invention provides a battery pack and a power supply device, which have an improved energy density in comparison with the same volume.
Description
본 발명은 배터리 팩 및 배터리 팩을 포함하는 전원공급장치에 관한 것이다.The present invention relates to a battery pack and a power supply comprising a battery pack.
통상적으로 이차 전지는 충전이 불가능한 일차 전지와는 달리, 충전 및 방전이 가능한 전지이다. 이차 전지는 모바일 기기, 전기 자동차, 하이브리드 자동차, 전기 자전거, 무정전 전원공급장치(uninterruptible power supply) 등의 에너지원으로 사용되며, 적용되는 외부기기의 종류에 따라 단일 전지의 형태로 사용되기도 하고, 다수의 전지들을 연결하여 하나의 단위로 묶은 모듈 형태로 사용되기도 한다.Typically, a secondary battery is a battery that can be charged and discharged, unlike a primary battery that is not rechargeable. Secondary batteries are used as energy sources for mobile devices, electric vehicles, hybrid cars, electric bicycles, uninterruptible power supplies, etc., and may also be used in the form of a single battery, depending on the type of external devices. It is also used in the form of a module that connects the batteries of the unit into a unit.
휴대폰과 같은 소형 모바일 기기는 단일 전지의 출력과 용량으로 소정시간 동안 작동이 가능하지만, 전력소모가 많은 전기 자동차, 하이브리드 자동차와 같이 장시간 구동, 고전력 구동이 필요한 경우에는 출력 및 용량의 문제로 다수의 전지를 포함하는 모듈 형태가 선호되며, 내장된 전지의 개수에 따라 출력전압이나 출력전류를 높일 수 있다.A small mobile device such as a mobile phone can operate for a predetermined time with the output and capacity of a single battery. The module type including the battery is preferred, and the output voltage or the output current can be increased according to the number of built-in batteries.
본 발명의 일 실시형태는, 동일한 체적 대비 에너지 밀도가 향상되는 배터리 팩 및 전원공급장치를 포함한다.One embodiment of the present invention includes a battery pack and a power supply device having an improved energy density relative to the same volume.
본 발명의 배터리 팩은, The battery pack of the present invention,
각각, 전극 단자가 형성된 단자면과, 상기 단자면의 반대 편에 형성된 바닥면과, 상기 단자면과 바닥면 사이의 측면을 포함하는 다수의 배터리 셀;A plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;
상기 배터리 셀의 측면을 가로질러 연장되는 사이드부와, 상기 사이드부로부터 배터리 셀을 둘러싸도록 절곡되어 배터리 셀의 바닥면을 가로질러 연장되는 바텀부를 포함하는 사이드 플레이트; 및A side plate including a side portion extending across the side of the battery cell, and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell; And
상기 바텀부로부터 배터리 셀과 반대 방향으로 돌출되도록 바텀부에 끼워진 고정 핀;을 포함한다.And a fixing pin fitted to the bottom portion so as to protrude from the bottom portion in a direction opposite to the battery cell.
본 발명에 의하면, 배터리 팩의 장착 구조를 제공하기 위한 고정 핀의 구조를 개선함으로써, 배터리 팩의 높이와 폭을 줄일 수 있고, 동일한 체적 대비 더 많은 개수의 배터리 셀을 포함할 수 있으며, 동일한 장착 면적에 대해 보다 많은 개수의 배터리 팩이 컴팩트하게 장착됨으로써, 동일한 체적 대비 높은 에너지 밀도를 갖는 배터리 팩 및 전원공급장치가 제공될 수 있다.According to the present invention, by improving the structure of the fixing pin for providing a mounting structure of the battery pack, it is possible to reduce the height and width of the battery pack, and to include a larger number of battery cells for the same volume, the same mounting By mounting a larger number of battery packs compactly over an area, a battery pack and a power supply having a high energy density relative to the same volume can be provided.
도 1에는, 본 발명의 바람직한 일 실시형태에 따른 전원공급장치의 사시도가 도시되어 있다. 1 is a perspective view of a power supply device according to a preferred embodiment of the present invention.
도 2 및 도 3에는, 도 1에 도시된 전원공급장치에 관한 서로 다른 분해 사시도가 도시되어 있다. 2 and 3, different exploded perspective views of the power supply shown in FIG. 1 are shown.
도 4에는, 도 1에 도시된 배터리 셀을 도시한 사시도가 도시되어 있다. 4 shows a perspective view of the battery cell shown in FIG. 1.
도 5에는 도 1의 V-V 선을 따라 취한 단면도가 도시되어 있다.FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 1.
도 6에는, 고정 핀과 바텀부 간의 결합을 설명하기 위한 사시도가 도시되어 있다. 6 is a perspective view for explaining the coupling between the fixing pin and the bottom portion.
도 7에는 도 6의 VII-VII 선을 따라 취한 단면도가 도시되어 있다. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6.
도 8에는 도 6에 도시된 고정 핀의 결합 공정을 개략적으로 보여주는 도면이 도시되어 있다. FIG. 8 is a view schematically illustrating a coupling process of the fixing pin illustrated in FIG. 6.
도 9에는 도 6의 고정 핀을 도시한 사시도가 도시되어 있다.FIG. 9 is a perspective view illustrating the fixing pin of FIG. 6.
도 10에는, 본 발명과 대비되는 비교에에 따른 고정 핀의 결합 구조가 도시되어 있다.10 shows a coupling structure of a fixing pin according to a comparison compared with the present invention.
도 11에는, 도 2에 도시된 배터리 팩의 저면을 도시한 도면으로, 고정 핀의 배치를 설명하기 위한 도면이 도시되어 있다.FIG. 11 is a view illustrating a bottom surface of the battery pack shown in FIG. 2, illustrating a layout of the fixing pins.
도 12에는, 도 5에 도시된 전원공급장치의 변형된 실시형태가 도시되어 있다.In FIG. 12 a modified embodiment of the power supply shown in FIG. 5 is shown.
도 13에는 본 발명과 대비되는 비교예에 따른 전원공급장치가 도시되어 있다.Figure 13 shows a power supply according to a comparative example compared with the present invention.
본 발명의 배터리 팩은, The battery pack of the present invention,
각각, 전극 단자가 형성된 단자면과, 상기 단자면의 반대 편에 형성된 바닥면과, 상기 단자면과 바닥면 사이의 측면을 포함하는 다수의 배터리 셀;A plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;
상기 배터리 셀의 측면을 가로질러 연장되는 사이드부와, 상기 사이드부로부터 배터리 셀을 둘러싸도록 절곡되어 배터리 셀의 바닥면을 가로질러 연장되는 바텀부를 포함하는 사이드 플레이트; 및A side plate including a side portion extending across the side of the battery cell, and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell; And
상기 바텀부로부터 배터리 셀과 반대 방향으로 돌출되도록 바텀부에 끼워진 고정 핀;을 포함한다. And a fixing pin fitted to the bottom portion so as to protrude from the bottom portion in a direction opposite to the battery cell.
예를 들어, 상기 바텀부에는 상기 고정 핀이 끼워지기 위한 관통 홀이 형성될 수 있다. For example, the bottom portion may be formed with a through hole for fitting the fixing pin.
예를 들어, 상기 고정 핀은, 배터리 셀을 향하는 바텀부의 상면으로부터 관통 홀에 끼워지며, 관통 홀을 둘러싸는 바텀부의 상면에 대해 압착될 수 있다. For example, the fixing pin may be fitted into the through hole from an upper surface of the bottom portion facing the battery cell, and may be pressed against the upper surface of the bottom portion surrounding the through hole.
예를 들어, 상기 고정 핀은, 상대적으로 큰 직경의 헤드부와, 상대적으로 작은 직경의 기둥부를 포함하고, For example, the fixing pin includes a relatively large diameter head portion and a relatively small diameter pillar portion,
상기 헤드부는, 상기 관통 홀을 둘러싸는 바텀부의 상면에 대해 압입될 수 있다. The head part may be press-fitted with respect to an upper surface of the bottom part surrounding the through hole.
예를 들어, 상기 고정 핀의 헤드부에는, 바텀부의 상면을 향하여 돌출된 압입 돌기가 형성될 수 있다. For example, the head portion of the fixing pin may be formed with a press-in projection projecting toward the top of the bottom portion.
예를 들어, 상기 고정 핀과 바텀부는, 일체적으로 결합될 수 있다. For example, the fixing pin and the bottom portion may be integrally coupled.
예를 들어, 상기 고정 핀과 바텀부는, 서로를 구별할 수 있는 경계선에 의해 구획되어 경계선을 사이에 두고 불연속적으로 연결될 수 있다. For example, the fixing pin and the bottom portion may be divided by a boundary line that can distinguish each other, and may be discontinuously connected with the boundary line therebetween.
예를 들어, 상기 고정 핀과 바텀부는, 서로 다른 소재로 형성될 수 있다. For example, the fixing pin and the bottom portion may be formed of different materials.
예를 들어, 상기 고정 핀의 상면은, 상기 고정 핀을 벗어난 바텀부의 상면과 실질적으로 편평하게 형성되거나, 또는 상기 고정 핀의 상면은, 상기 고정 핀을 벗어난 바텀부의 상면 보다 낮은 레벨에 형성될 수 있다. For example, an upper surface of the fixing pin may be formed substantially flat with an upper surface of the bottom portion deviating from the fixing pin, or an upper surface of the fixing pin may be formed at a level lower than an upper surface of the bottom portion deviating from the fixing pin. have.
예를 들어, 상기 고정 핀은, 상기 고정 핀을 벗어난 바텀부의 상면을 기준으로 바텀부의 두께 방향을 따라 하방으로 인입될 수 있다. For example, the fixing pin may be drawn downward in the thickness direction of the bottom portion with respect to the upper surface of the bottom portion which is out of the fixing pin.
예를 들어, 상기 고정 핀의 상면과 상기 고정 핀을 벗어난 바텀부의 상면은, 상기 배터리 셀의 바닥면을 함께 지지할 수 있다. For example, an upper surface of the fixing pin and an upper surface of the bottom portion deviating from the fixing pin may support the bottom surface of the battery cell together.
예를 들어, 상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 서로로부터 이격되도록 간헐적인 위치에 다수로 배치될 수 있다.For example, the fixing pins may be disposed in plural in intermittent positions so as to be spaced apart from each other along the longitudinal direction of the bottom portion.
예를 들어, 상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 중앙 위치에 형성될 수 있다. For example, the fixing pin may be formed at a central position along the length direction of the bottom portion.
예를 들어, 상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 중앙 위치 외에, 양단 위치와 중앙 위치 사이의 제1 위치에도 형성될 수 있다. For example, the fixing pin may be formed at a first position between both end positions and the center position in addition to the center position along the length direction of the bottom portion.
예를 들어, 상기 제1 위치는, 상기 바텀부의 길이 방향을 따라 양단 위치 보다는 중앙 위치에 상대적으로 근접한 위치일 수 있다. For example, the first position may be a position relatively closer to a center position than a position at both ends in the length direction of the bottom portion.
예를 들어, 상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 양단 위치 보다는 중앙 위치에 집중되어 형성될 수 있다. For example, the fixing pin may be formed to be concentrated at a central position rather than at both end positions along the length of the bottom portion.
예를 들어, 상기 바텀부는, 상기 배터리 셀의 바닥면 중에서 사이드 플레이트와 인접한 가장자리를 가로질러 연장되며, For example, the bottom portion may extend across an edge adjacent to a side plate of a bottom surface of the battery cell,
상기 바닥면의 중앙 위치는, 상기 바텀부로부터 노출될 수 있다. The central position of the bottom surface may be exposed from the bottom portion.
한편, 본 발명의 다른 측면에 따른 전원공급장치는, On the other hand, the power supply according to another aspect of the present invention,
각각, 전극 단자가 형성된 단자면과, 상기 단자면의 반대 편에 형성된 바닥면과, 상기 단자면과 바닥면 사이의 측면을 포함하는 다수의 배터리 셀;A plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;
상기 배터리 셀의 측면을 가로질러 연장되는 사이드부와, 상기 사이드부로부터 배터리 셀을 둘러싸도록 절곡되어 배터리 셀의 바닥면을 가로질러 연장되는 바텀부를 포함하는 사이드 플레이트; A side plate including a side portion extending across the side of the battery cell, and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell;
상기 바텀부로부터 배터리 셀과 반대 방향으로 돌출되도록 바텀부에 끼워진 고정 핀; 및A fixing pin fitted to a bottom part to protrude from the bottom part in a direction opposite to the battery cell; And
상기 바텀부로부터 돌출된 고정 핀이 끼워지도록 고정 홀이 형성된 마운팅 패널;을 포함한다.And a mounting panel having a fixing hole formed therein so that the fixing pin protruding from the bottom portion is inserted therein.
예를 들어, 상기 고정 홀의 깊이는, 상기 바텀부로부터 돌출된 고정 핀의 돌출 길이 보다 깊게 형성될 수 있다.For example, the depth of the fixing hole may be formed deeper than the protruding length of the fixing pin protruding from the bottom portion.
이하, 첨부된 도면을 참조하여, 본 발명의 바람직한 실시형태에 관한 배터리 팩 및 전원공급장치에 대해 설명하기로 한다. Hereinafter, a battery pack and a power supply device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
도 1에는, 본 발명의 바람직한 일 실시형태에 따른 전원공급장치의 사시도가 도시되어 있다. 도 2 및 도 3에는, 도 1에 도시된 전원공급장치에 관한 서로 다른 분해 사시도가 도시되어 있다. 도 4에는, 도 1에 도시된 배터리 셀을 도시한 사시도가 도시되어 있다. 그리고, 도 5에는 도 1의 V-V 선을 따라 취한 단면도가 도시되어 있다.1 is a perspective view of a power supply device according to a preferred embodiment of the present invention. 2 and 3, different exploded perspective views of the power supply shown in FIG. 1 are shown. 4 shows a perspective view of the battery cell shown in FIG. 1. 5 is a cross-sectional view taken along the line V-V of FIG. 1.
도 1 내지 도 3을 참조하면, 본 발명의 일 실시형태에 따른 전원공급장치는, 배터리 팩(100) 및 상기 배터리 팩(100)이 장착되는 마운팅 패널(200)을 포함할 수 있다.1 to 3, a power supply apparatus according to an embodiment of the present invention may include a battery pack 100 and a mounting panel 200 on which the battery pack 100 is mounted.
본 명세서에 첨부된 도면들에서, 상기 배터리 팩(100)은 마운팅 패널(200)과 함께 전원공급장치를 형성하는 것으로 도시되어 있으나, 본 발명의 배터리 팩(100)은, 마운팅 패널(200)에 장착되지 않고, 마운팅 패널(200)과는 독립적인 구성으로 형성될 수 있다. 즉, 본 명세서에 첨부된 도면들에서, 상기 배터리 팩(100)은 마운팅 패널(200)과 함께 도시되어 있으나, 이하에서 설명되는 배터리 팩(100)에 관한 기술적 특징은, 마운팅 패널(200)과는 독립적으로 구성되는 배터리 팩(100)에 대해서도 동일하게 적용될 수 있으며, 마운팅 패널(200)에 장착되지 않고 독립적으로 구성된 배터리 팩(100)도 본 발명의 기술적 범위에 포함될 수 있다.In the accompanying drawings, the battery pack 100 is shown to form a power supply with the mounting panel 200, the battery pack 100 of the present invention, the mounting panel 200 It may not be mounted and may be formed in a configuration independent of the mounting panel 200. That is, in the drawings attached to the present specification, the battery pack 100 is illustrated with the mounting panel 200, but technical features related to the battery pack 100 described below may include the mounting panel 200. The same may be applied to the battery pack 100 that is independently configured, and the battery pack 100 that is independently configured without being mounted to the mounting panel 200 may be included in the technical scope of the present invention.
본 발명의 배터리 팩(100)은, 배터리 팩(100)으로부터 구동 전원을 공급받는 전기 자동차와 같은 기기 내부에 장착될 수 있고, 전기 자동차의 마운팅 패널(200) 상에 장착될 수 있다. 예를 들어, 마운팅 패널(200)에 장착된 배터리 팩(100)은, 본 발명의 전원공급장치를 형성할 수 있고, 전기 자동차의 구동 전원을 공급하는 전원공급장치를 형성할 수 있다.The battery pack 100 of the present invention may be mounted inside a device such as an electric vehicle that receives driving power from the battery pack 100, and may be mounted on the mounting panel 200 of the electric vehicle. For example, the battery pack 100 mounted on the mounting panel 200 may form a power supply device of the present invention, and may form a power supply device for supplying driving power for an electric vehicle.
상기 배터리 팩(100)은, 다수의 배터리 셀(10)과, 다수의 배터리 셀(10)을 사이에 두고 배터리 셀(10)의 양편에 배치되는 사이드 플레이트(50)를 포함할 수 있다. 그리고, 상기 배터리 팩(100)은, 배터리 셀(10)의 배열 방향을 따라 일 군의 배터리 셀(10)의 양단 위치에 배치되는 엔드 블록(40)을 포함할 수 있다.The battery pack 100 may include a plurality of battery cells 10 and side plates 50 disposed on both sides of the battery cells 10 with the plurality of battery cells 10 interposed therebetween. In addition, the battery pack 100 may include an end block 40 disposed at both ends of the group of battery cells 10 along the arrangement direction of the battery cells 10.
도 4를 참조하면, 상기 배터리 셀(10)은, 전극 단자(11)가 형성된 단자면(T)과, 상기 단자면(T)과 반대 편에 형성된 바닥면(B)과, 상기 단자면(T)과 바닥면(B) 사이를 이어주되 상대적으로 넓은 면적으로 형성된 주된 면(M)과, 상기 단자면(T)과 바닥면(B) 사이를 이어주되 상대적으로 좁은 면적으로 형성된 측면(S)을 포함할 수 있다. 상기 배터리 셀(10)은, 단자면(T), 바닥면(B), 주된 면(M)의 쌍과 측면(S)의 쌍을 포함하여 대략 직육면체 형상으로 형성될 수 있다. 상기 배터리 셀(10)은, 다수의 배터리 셀(10)과 함께 열을 지어 배열될 수 있으며, 서로 이웃하는 배터리 셀(10)끼리 주된 면(M)을 마주하도록 다수의 배터리 셀(10)이 배열될 수 있다. Referring to FIG. 4, the battery cell 10 includes a terminal surface T on which an electrode terminal 11 is formed, a bottom surface B formed on an opposite side of the terminal surface T, and the terminal surface ( Main surface (M) connected between T) and the bottom surface (B) but having a relatively large area, and a side (S) formed between the terminal surface (T) and the bottom surface (B) but having a relatively narrow area (S). ) May be included. The battery cell 10 may include a terminal surface T, a bottom surface B, a pair of main surfaces M, and a pair of side surfaces S, and may have a substantially rectangular parallelepiped shape. The battery cells 10 may be arranged in a row together with the plurality of battery cells 10, and the plurality of battery cells 10 may be arranged such that neighboring battery cells 10 face the main surface M of each other. Can be arranged.
도 3을 참조하면, 상기 사이드 플레이트(50)는, 배터리 셀(10)의 배열 방향을 따라, 다수의 배터리 셀(10)을 가로질러 연장될 수 있으며, 배터리 셀(10)의 양편으로 쌍을 이루어 형성될 수 있다. 상기 사이드 플레이트(50)는, 다수의 배터리 셀(10)의 측면(S)을 가로질러 연장되는 사이드부(51)와, 다수의 배터리 셀(10)의 바닥면(B)을 가로질러 연장되는 바텀부(55)와, 다수의 배터리 셀(10)의 단자면(T)을 가로질러 연장되는 탑부(57)를 포함할 수 있다. Referring to FIG. 3, the side plates 50 may extend across the plurality of battery cells 10 along the arrangement direction of the battery cells 10, and may be paired to both sides of the battery cells 10. It can be formed. The side plate 50 extends across side surfaces 51 extending across side surfaces S of the plurality of battery cells 10 and bottom surfaces B of the plurality of battery cells 10. The bottom portion 55 may include a top portion 57 extending across the terminal surfaces T of the plurality of battery cells 10.
상기 사이드부(51)는, 다수의 배터리 셀(10)의 측면(S)을 가로질러 연장될 수 있으며, 상기 사이드부(51)와 함께 배터리 셀(10)의 외주를 둘러싸는 엔드 블록(40)에 의해 다수의 배터리 셀(10)이 구조적으로 결속되어 모듈화될 수 있다. 상기 사이드부(51)는 엔드 블록(40)과 함께 다수의 배터리 셀(10)을 구조적으로 결속시키는 외에, 다수의 배터리 셀(10)의 측면(S)에 열적으로 접촉하여 다수의 배터리 셀(10)의 방열을 촉진할 수도 있다.The side part 51 may extend across the side surfaces S of the plurality of battery cells 10, and end blocks 40 surrounding the outer circumference of the battery cell 10 together with the side parts 51. The plurality of battery cells 10 can be structurally bound and modularized by The side part 51 structurally binds the plurality of battery cells 10 together with the end block 40, and thermally contacts the side surfaces S of the plurality of battery cells 10 so that the plurality of battery cells ( 10) may be promoted.
상기 사이드부(51)는, 엔드 블록(40)과 함께, 배터리 셀(10)의 외주를 둘러싸도록 형성되어 다수의 배터리 셀(10)을 구조적으로 결속시킬 수 있고, 배터리 셀(10)의 측면(S)을 가로질러 연장되면서 배터리 셀(10)의 측면(S)과 열적으로 접촉하여 다수의 배터리 셀(10)의 방열판 기능을 할 수 있다. 또한 상기 사이드부(51)는 다수의 배터리 셀(10)의 측면(S)에 열적으로 접촉하여 일부 배터리 셀(10)에 열이 축적되거나 일부 배터리 셀(10)의 국부적인 열화를 방지하고, 주변의 다른 배터리 셀(10)로 열을 확산시키는 역할을 할 수 있다.The side part 51, together with the end block 40, may be formed to surround the outer circumference of the battery cell 10 to structurally bind the plurality of battery cells 10, and may have a side surface of the battery cell 10. It extends across S and thermally contacts the side surface S of the battery cell 10 to function as a heat sink of the plurality of battery cells 10. In addition, the side part 51 thermally contacts the side surfaces S of the plurality of battery cells 10 to prevent heat from accumulating in some battery cells 10 or local degradation of some battery cells 10, It may serve to spread heat to other battery cells 10 around.
상기 바텀부(55)는, 상기 사이드부(51)로부터 배터리 셀(10)을 향하는 내측 방향으로 절곡되어 배터리 셀(10)을 둘러싸도록 연장될 수 있으며, 배터리 셀(10)의 측면(S)과 마주하는 사이드부(51)로부터 절곡되어 배터리 셀(10)의 바닥면(B)과 마주하도록 절곡될 수 있다. The bottom part 55 may be bent inward from the side part 51 toward the battery cell 10 to extend to surround the battery cell 10, and the side surface S of the battery cell 10 may be extended. It may be bent from the side portion 51 facing the surface B may be bent to face the bottom surface (B) of the battery cell (10).
상기 바텀부(55)는, 배터리 셀(10)의 배열 방향을 따라 다수의 배터리 셀(10)의 바닥면(B)을 가로질러 연장되면서 배터리 셀(10)의 바닥면(B)을 지지해줄 수 있다. 상기 바텀부(55)는, 배터리 셀(10)의 바닥면(B) 중에서 사이드 플레이트(50)와 인접한 양편 가장자리를 가로질러 연장되면서 바닥면(B)의 중앙을 노출시킬 수 있다. 상기 바텀부(55)가 배터리 셀(10)의 바닥면(B) 전체를 덮지 않고, 사이드 플레이트(50)와 인접한 가장자리는 덮되 바닥면(B)의 중앙은 노출시킴으로써, 배터리 셀(10)의 방열에 보다 유리한 구조가 제공될 수 있다.The bottom portion 55 supports the bottom surface B of the battery cell 10 while extending across the bottom surfaces B of the plurality of battery cells 10 along the arrangement direction of the battery cells 10. Can be. The bottom portion 55 may extend across both edges adjacent to the side plate 50 of the bottom surface B of the battery cell 10 to expose the center of the bottom surface B. FIG. The bottom portion 55 does not cover the entire bottom surface B of the battery cell 10, but covers an edge adjacent to the side plate 50 but exposes the center of the bottom surface B, thereby A structure that is more advantageous for heat dissipation can be provided.
상기 바텀부(55)에는, 배터리 팩(100)의 장착 내지는 위치 고정을 위한 고정 핀(80)이 끼워질 수 있다. 보다 구체적으로, 상기 바텀부(55)에는 고정 핀(80)이 돌출되도록 끼워질 수 있으며, 상기 고정 핀(80)은 바텀부(55)의 길이 방향을 따라 서로에 대해 이격된 다수로 배치될 수 있다. 상기 고정 핀(80)은, 바텀부(55)로부터 배터리 셀(10)과 반대 방향으로 돌출될 수 있다. 상기 고정 핀(80)은, 배터리 팩(100)의 장착 구조를 제공할 수 있으며, 배터리 팩(100)으로부터 구동 전원을 공급받는 기기와의 결합 구조를 제공할 수 있다.The bottom part 55 may be fitted with a fixing pin 80 for mounting or fixing the position of the battery pack 100. More specifically, the bottom portion 55 may be fitted so that the fixing pin 80 protrudes, and the fixing pin 80 may be arranged in plurality spaced apart from each other along the longitudinal direction of the bottom portion 55. Can be. The fixing pin 80 may protrude from the bottom portion 55 in a direction opposite to the battery cell 10. The fixing pin 80 may provide a mounting structure of the battery pack 100 and provide a coupling structure with a device that receives driving power from the battery pack 100.
예를 들어, 상기 배터리 팩(100)은 전기 자동차와 같은 기기 내부에 장착될 수 있으며, 전기 자동차의 마운팅 패널(200) 상에 장착될 수 있다. 고정 핀(80)을 이용하여 상기 마운팅 패널(200)에 장착된 배터리 팩(100)은, 본 발명의 전원공급장치를 형성할 수 있으며, 전기 자동차의 구동 전원을 공급하는 전원공급장치를 형성할 수 있다. For example, the battery pack 100 may be mounted inside a device such as an electric vehicle, and may be mounted on a mounting panel 200 of the electric vehicle. The battery pack 100 mounted on the mounting panel 200 by using the fixing pin 80 may form the power supply device of the present invention and form a power supply device for supplying driving power for an electric vehicle. Can be.
상기 고정 핀(80)은, 마운팅 패널(200)의 고정 홈(200`)에 끼워져 배터리 팩(100)을 위치 고정시키고, 배터리 팩(100)과 마운팅 패널(200) 사이의 물리적인 간섭을 형성함으로써, 배터리 팩(100)의 유동이나 진동을 억제하고, 마운팅 패널(200) 상에서 배터리 팩(100)을 견고하게 위치 고정시킬 수 있다. 상기 고정 핀(80)은, 바텀부(55)의 길이 방향을 따라 서로로부터 이격된 다수로 배치될 수 있으며, 고정 핀(80)의 간격이나 위치는 배터리 팩(100)의 유동이나 진동을 효율적으로 억제할 수 있도록 설계될 수 있다. 이에 대해서는 후에 보다 구체적으로 설명하기로 한다.The fixing pin 80 is inserted into the fixing groove 200 ′ of the mounting panel 200 to fix the position of the battery pack 100 and to form physical interference between the battery pack 100 and the mounting panel 200. As a result, the flow and vibration of the battery pack 100 can be suppressed, and the battery pack 100 can be firmly fixed on the mounting panel 200. The fixing pin 80 may be arranged in a plurality of spaced apart from each other along the longitudinal direction of the bottom portion 55, the interval or position of the fixing pin 80 is effective for the flow or vibration of the battery pack 100 Can be designed to be suppressed. This will be described later in more detail.
상기 탑부(57)는, 상기 사이드부(51)로부터 배터리 셀(10)을 향하는 내측 방향으로 절곡되며, 상기 바텀부(55)와 실질적으로 나란하게 배터리 셀을 둘러싸도록 내측 방향으로 절곡될 수 있다. 보다 구체적으로, 상기 탑부(57)는 배터리 셀(10)의 측면(S)과 마주하는 사이드부(51)로부터 절곡되어 배터리 셀(10)의 단자면(T)과 마주하도록 절곡될 수 있다. The top part 57 may be bent inwardly from the side part 51 toward the battery cell 10, and may be bent inwardly so as to surround the battery cell substantially in parallel with the bottom part 55. . More specifically, the top part 57 may be bent from the side part 51 facing the side surface S of the battery cell 10 to be bent to face the terminal surface T of the battery cell 10.
상기 탑부(57)는, 배터리 셀(10)의 배열 방향을 따라 다수의 배터리 셀(10)의 단자면(T)을 가로질러 연장되면서 배터리 셀(10)의 단자면(T)을 지지해줄 수 있다. 상기 탑부(57)는, 사이드부(51)로부터 탑부(57)와 나란하게 절곡되는 바텀부(55)와 함께, 상하 방향을 따라 배터리 셀(10)의 단자면(T)과 바닥면(B)을 함께 지지해줌으로써, 배터리 셀(10)의 유동을 효과적으로 억제할 수 있다. The top portion 57 may support the terminal surface T of the battery cell 10 while extending across the terminal surfaces T of the plurality of battery cells 10 along the arrangement direction of the battery cell 10. have. The top portion 57, along with the bottom portion 55 that is bent in parallel with the top portion 57 from the side portion 51, the terminal surface (T) and the bottom surface (B) of the battery cell 10 along the vertical direction ) Together, it is possible to effectively suppress the flow of the battery cell (10).
상기 탑부(57)는, 배터리 셀(10)의 단자면(T) 중에서 사이드 플레이트(50)와 인접한 양편 가장자리를 가로질러 연장되면서 전극 단자(11)가 형성된 단자면(T)의 중앙을 노출시킬 수 있다. 이와 같이, 상기 탑부(57)가 배터리 셀(10)의 단자면(T) 전체를 덮지 않고, 사이드 플레이트(50)와 인접한 가장자리는 덮되 단자면(T)의 중앙은 노출시킴으로써, 배터리 셀(10)의 전극 단자(11)가 배터리 팩(100)의 외부로 노출될 수 있고, 배터리 팩(100)의 외부로 노출된 전극 단자(11)를 통하여 다수의 배터리 셀(10)이 서로 전기적으로 연결될 수 있다.The top portion 57 extends across both edges adjacent to the side plate 50 of the terminal surface T of the battery cell 10 to expose the center of the terminal surface T on which the electrode terminal 11 is formed. Can be. As described above, the top portion 57 does not cover the entire terminal surface T of the battery cell 10, but the edge adjacent to the side plate 50 is covered, but the center of the terminal surface T is exposed to thereby expose the battery cell 10. The electrode terminals 11) may be exposed to the outside of the battery pack 100, and the plurality of battery cells 10 may be electrically connected to each other through the electrode terminals 11 exposed to the outside of the battery pack 100. Can be.
상기 탑부(57)는 충, 방전 전류가 집중되어 상대적으로 발열이 많은 전극 단자(11)가 형성된 단자면(T)에 대한 방열을 촉진할 수 있다. 예를 들어, 상기 탑부(57)는 전극 단자(11)가 형성된 단자면(T)과 열적 접촉을 형성하고, 상대적으로 넓은 방열 면적을 점유하는 사이드부(51)로 연장되어, 단자면(T)의 축적된 열을 사이드부(51)로 전달할 수 있으며, 단자면(T)의 국부적인 열 집중을 완화하고, 단자면(T)의 방열을 촉진할 수 있다. 즉, 상기 탑부(57)는 전극 단자(11)가 형성된 배터리 셀(10)의 단자면(T)으로부터, 사이드 플레이트(50) 중에서 가장 넓은 면적의 방열판을 제공할 수 있는 사이드부(51)로 연결되는 방열 경로를 형성할 수 있다. The top portion 57 may promote heat dissipation to the terminal surface T on which the electrode terminals 11 having a relatively high heat generation due to the concentration of charge and discharge currents are formed. For example, the top portion 57 forms thermal contact with the terminal surface T on which the electrode terminal 11 is formed, and extends to the side portion 51 that occupies a relatively large heat dissipation area, thereby extending the terminal surface T. ) Can be transferred to the side part 51, and local heat concentration of the terminal surface T can be alleviated, and heat dissipation of the terminal surface T can be promoted. That is, the top part 57 is a side part 51 that can provide a heat sink having the largest area among the side plates 50 from the terminal surface T of the battery cell 10 in which the electrode terminal 11 is formed. It is possible to form a heat dissipation path to be connected.
상기 배터리 셀(10)의 배열 방향을 따라 일 군의 배터리 셀(10)의 양단 위치에는 엔드 블록(40)이 배치될 수 있다. 상기 엔드 블록(40)은, 사이드 플레이트(50)와 함께 다수의 배터리 셀(10)의 외주를 둘러싸면서 다수의 배터리 셀(10)을 구조적으로 결속할 수 있다. 예를 들어, 상기 엔드 블록(40)은, 경성의 수지 소재로 형성되어 다수의 배터리 셀(10)을 견고하게 결속할 수 있고, 배터리 셀(10)의 스웰링(swelling)과 같은 변형을 효과적으로 억제하여 형상 변형에 따른 전기적인 출력 성능의 저하를 방지할 수 있다. End blocks 40 may be disposed at both ends of the group of battery cells 10 along the arrangement direction of the battery cells 10. The end block 40 may structurally bind the plurality of battery cells 10 while surrounding the outer periphery of the plurality of battery cells 10 together with the side plate 50. For example, the end block 40 may be formed of a hard resin material to firmly bind the plurality of battery cells 10, and effectively deform deformation such as swelling of the battery cells 10. By suppressing, the fall of the electrical output performance by the shape deformation can be prevented.
상기 엔드 블록(40)에는 부쉬 부재(미도시)가 끼워질 수 있는 체결 공(40`)이 형성될 수 있으며, 상기 부쉬 부재(미도시)가 체결 공(40`)을 관통하여 마운팅 패널(200)에 끼워짐으로써, 배터리 팩(100)이 마운팅 패널(200) 상에 위치 고정될 수 있다. 상기 엔드 블록(40)을 관통하여 마운팅 패널(200)에 끼워지는 부쉬 부재(미도시)는, 사이드 플레이트(50)를 관통하여 마운팅 패널(200)에 끼워지는 고정 핀(80)과 함께, 배터리 팩(100)을 마운팅 패널(200) 상에 위치 고정시킬 수 있으며, 부쉬 부재(미도시)와 고정 핀(80)을 통하여 배터리 팩(100)은 마운팅 패널(200) 상에서 위치 고정되며 마운팅 패널(200) 상에 장착될 수 있다.The end block 40 may be provided with a fastening hole 40` to which a bushing member (not shown) may be fitted, and the bushing member (not shown) may pass through the fastening hole 40` to mount a mounting panel ( By being inserted into the battery pack 200, the battery pack 100 may be fixed on the mounting panel 200. The bushing member (not shown) penetrating the end block 40 and fitted to the mounting panel 200, together with the fixing pin 80 penetrating the side plate 50 and fitted to the mounting panel 200, is a battery. The pack 100 may be fixed on the mounting panel 200, and the battery pack 100 may be fixed on the mounting panel 200 by a bushing member (not shown) and the fixing pin 80. 200).
상기 엔드 블록(40)은 절연성 수지 소재로 형성되어 출력 단자(15)의 위치를 제공할 수 있다. 배터리 팩(100)을 형성하는 다수의 배터리 셀(10)은, 서로 다른 배터리 셀(10)의 전극 단자(11)끼리를 전기적으로 연결하는 버스 바(미도시)에 의해 서로 전기적으로 결속될 수 있으며, 상기 출력 단자(15)를 통하여 전기적인 출력을 제공할 수 있다. The end block 40 may be formed of an insulating resin material to provide a position of the output terminal 15. The plurality of battery cells 10 forming the battery pack 100 may be electrically connected to each other by a bus bar (not shown) that electrically connects electrode terminals 11 of different battery cells 10 to each other. In addition, an electrical output may be provided through the output terminal 15.
도 5를 참조하면, 본 발명의 일 실시형태에 따른 전원공급장치에서는, 배터리 팩(100)의 고정 핀(80)이 마운팅 패널(200)의 고정 홈(200`)에 끼워짐으로써, 마운팅 패널(200) 상에서 배터리 팩(100)이 위치 고정되고, 배터리 팩(100)의 장착이 이루어질 수 있다. 이때, 상기 고정 핀(80)은, 바텀부(55)로부터 배터리 셀(10)과 반대 방향으로 돌출될 수 있고, 바텀부(55)로부터의 돌출 길이(f1)는, 배터리 팩(100)의 위치 고정을 위해 충분한 길이로 형성될 수 있다. 그리고, 상기 고정 홈(200`)의 깊이(f2)는 상기 고정 핀(80)의 돌출 길이(f1)와 대응되도록 형성될 수 있다. 본 발명의 일 실시형태에서, 상기 고정 홈(200`)의 깊이(f2)는 고정 핀(80)의 돌출 길이(f1) 보다 깊게 형성될 수 있다. 이러한 구조는, 고정 홈(200`)의 깊이(f2)를 고정 핀(80)의 돌출 길이(f1) 보다 깊게 형성함으로써, 배터리 팩(100)의 하부를 형성하는 바텀부(55)의 하면이 마운팅 패널(200) 상에 접촉하고, 배터리 팩(100)이 마운팅 패널(200) 위로 들뜨게 됨으로써, 전원공급장치의 높이가 증가하지 않도록, 고정 홈(200`)의 깊이(f2)와 고정 핀(80)의 돌출 길이(f1) 사이에 충분한 여유 마진을 두기 위한 것이다. 만일 배터리 팩(100)이 마운팅 패널(200) 상에 밀착되지 못하고, 마운팅 패널(200) 위로 들뜨게 되면, 전원공급장치의 높이가 증가하고 단위 체적 대비 에너지 밀도가 떨어지게 된다.Referring to FIG. 5, in the power supply device according to the exemplary embodiment of the present invention, the fixing pin 80 of the battery pack 100 is fitted into the fixing groove 200 ′ of the mounting panel 200, thereby mounting the mounting panel. The battery pack 100 is fixed on the position 200, and the mounting of the battery pack 100 may be performed. In this case, the fixing pin 80 may protrude from the bottom portion 55 in the opposite direction to the battery cell 10, and the protruding length f1 from the bottom portion 55 may be defined by the battery pack 100. It may be formed to a length sufficient for fixing the position. In addition, the depth f2 of the fixing groove 200 ′ may be formed to correspond to the protruding length f1 of the fixing pin 80. In one embodiment of the present invention, the depth f2 of the fixing groove 200 ′ may be formed deeper than the protruding length f1 of the fixing pin 80. In this structure, the depth f2 of the fixing groove 200 ′ is formed deeper than the protruding length f1 of the fixing pin 80, so that the bottom surface of the bottom portion 55 forming the lower portion of the battery pack 100 is formed. Depth f2 of the fixing groove 200 ′ and the fixing pins 200 are in contact with the mounting panel 200 and the battery pack 100 is lifted over the mounting panel 200 so that the height of the power supply does not increase. To allow sufficient margin between the protruding lengths f1 of 80). If the battery pack 100 does not come into close contact with the mounting panel 200 and is lifted over the mounting panel 200, the height of the power supply increases and the energy density of the unit volume decreases.
도 6에는, 고정 핀과 바텀부 간의 결합을 설명하기 위한 사시도가 도시되어 있다. 도 7에는 도 6의 VII-VII 선을 따라 취한 단면도가 도시되어 있다. 도 8에는 도 6에 도시된 고정 핀의 결합 공정을 개략적으로 보여주는 도면이 도시되어 있다. 도 9에는 도 6의 고정 핀을 도시한 사시도가 도시되어 있다.6 is a perspective view for explaining the coupling between the fixing pin and the bottom portion. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6. FIG. 8 is a view schematically illustrating a coupling process of the fixing pin illustrated in FIG. 6. FIG. 9 is a perspective view illustrating the fixing pin of FIG. 6.
도면들을 참조하면, 상기 고정 핀(80)은 바텀부(55)로부터 돌출되도록 형성될 수 있으며, 바텀부(55)와 일체로 형성될 수 있다. 상기 고정 핀(80)과 바텀부(55)가 일체로 형성된다는 것은, 상기 고정 핀(80)과 바텀부(55)가 서로 견고하게 결합됨으로써, 고정 핀(80)과 바텀부(55)가 물리적으로 손상되지 않고는 서로로부터 분리되지 않는다는 것을 의미할 수 있다. 상기 고정 핀(80)은 바텀부(55)와 일체로 형성될 수 있으나, 바텀부(55)와는 다른 부품으로 형성되어 바텀부(55)에 대해 일체적으로 결합될 수 있다. 본 발명의 일 실시형태에서, 상기 고정 핀(80)과 바텀부(55)는, 하나의 원 소재로부터 성형되어 서로에 대한 경계가 없이 연속적인 형태, 그러니까, 심 리스(seamless) 형태로 연결된 것이 아니며, 상기 고정 핀(80)과 바텀부(55)는, 서로를 구별할 수 있는 경계선에 의해 구획되어 경계선을 사이에 두고 불연속적으로 연결된 구조를 가질 수 있다. 예를 들어, 상기 고정 핀(80)과 바텀부(55)는 서로 다른 소재로 형성될 수 있으며, 상기 고정 핀(80)은, 스틸이나 스테인레스 스틸 소재로 형성될 수 있으며, 바텀부(55) 내지는 사이드 플레이트(50)와는 다른 소재로 형성될 수 있다.Referring to the drawings, the fixing pin 80 may be formed to protrude from the bottom portion 55 and may be integrally formed with the bottom portion 55. The fixing pin 80 and the bottom portion 55 are integrally formed, so that the fixing pin 80 and the bottom portion 55 are firmly coupled to each other, so that the fixing pin 80 and the bottom portion 55 are connected to each other. It may mean that they are not separated from each other without physical damage. The fixing pin 80 may be integrally formed with the bottom part 55, but may be formed of a component different from the bottom part 55, and may be integrally coupled to the bottom part 55. In one embodiment of the present invention, the fixing pin 80 and the bottom portion 55 are formed from one raw material and connected in a continuous form, that is, in a seamless form, without boundary to each other. The fixing pin 80 and the bottom part 55 may be divided by a boundary line that can distinguish each other, and have a structure discontinuously connected with the boundary line therebetween. For example, the fixing pin 80 and the bottom portion 55 may be formed of different materials, and the fixing pin 80 may be formed of steel or stainless steel material, and the bottom portion 55 Or may be formed of a material different from that of the side plate 50.
상기 고정 핀(80)은, 바텀부(55)에 마련된 관통 홀(50`)에 끼워지면서 관통 홀(50`) 주변에 대해 높은 압력으로 가압되어 관통 홀(50`) 주변에 대해 압착되는 형태로 바텀부(55)와 일체로 결합될 수 있다. 예를 들어, 도 8에 도시된 바와 같이, 고정 핀(80)이 관통 홀(50`)에 헐겁게 끼워진 상태에서, 고정 핀(80)이 끼워진 관통 홀(50`) 주변을 펀치(P, punch)와 엔빌(A, anvil) 사이에 끼우고, 높은 압력을 제공하는 펀치(P, punch)로 가압하여 고정 핀(80)이 관통 홀(50`) 주변의 바텀부(55)에 대해 압착되면서 고정 핀(80)과 바텀부(55)가 서로 일체적으로 결합될 수 있다. 즉, 상기 고정 핀(80)과 바텀부(55) 간의 결합은 높은 압력을 기반으로 하는 압입으로 이루어지며, 고정 핀(80)이 펀치(P, punch)의 높은 압력에 의해 관통 홀(50`) 주변의 바텀부(55) 내로 각인되는 형태로 끼워짐으로써 고정 핀(80)과 관통 홀(50`) 주변 사이에서 견고한 결합을 형성할 수 있다.The fixing pin 80 is inserted into the through hole 50 ′ provided in the bottom part 55, and is pressed at a high pressure around the through hole 50 ′ and pressed against the periphery of the through hole 50 ′. The bottom portion 55 may be integrally coupled with the furnace. For example, as shown in FIG. 8, in a state where the fixing pin 80 is loosely fitted in the through hole 50 ′, a punch P is punched around the through hole 50 ′ in which the fixing pin 80 is inserted. ) And the anvil (A, anvil), the pressing pin (P, punch) to provide a high pressure by pressing the fixing pin 80 against the bottom portion 55 around the through hole (50`) The fixing pin 80 and the bottom portion 55 may be integrally coupled to each other. That is, the coupling between the fixing pin 80 and the bottom portion 55 is made by press-fitting based on a high pressure, the fixing pin 80 is a through hole (50 ') by the high pressure of the punch (P, punch) By being inserted into the bottom portion 55 in the form of a periphery, a rigid coupling may be formed between the fixing pin 80 and the periphery of the through hole 50 '.
도 6 및 도 7을 참조하면, 상기 고정 핀(80)은, 바텀부(55)의 상면(55a)으로부터 관통 홀(50`)에 끼워지면서 관통 홀(50`)을 둘러싸는 바텀부(55)의 상면(55a)에 대해 압착될 수 있고, 상기 고정 핀(80)이 바텀부(55)의 상면(55a)에 대해 압착되면서 고정 핀(80)과 바텀부(55) 간의 견고한 결합이 이루어질 수 있다. 여기서, 바텀부(55)의 상면(55a)이란, 바텀부(55) 중에서 배터리 셀(10)을 향하는 면을 의미할 수 있다.6 and 7, the fixing pin 80 is inserted into the through hole 50 ′ from the top surface 55 a of the bottom portion 55 and surrounds the bottom hole 55 ′. It may be pressed against the top surface 55a of the), and the fixing pin 80 is pressed against the top surface 55a of the bottom portion 55, the firm coupling between the fixing pin 80 and the bottom portion 55 is made Can be. Here, the upper surface 55a of the bottom portion 55 may mean a surface of the bottom portion 55 that faces the battery cell 10.
도 9를 참조하면, 상기 고정 핀(80)은, 상대적으로 큰 직경을 갖는 헤드부(85)와, 상대적으로 작은 직경을 갖는 기둥부(81)가 서로 동축 상으로 연결된 형태로 형성될 수 있다. 상기 헤드부(85)는, 상대적으로 큰 직경으로 형성되어, 바텀부(55)의 관통 홀(50`) 주변에 대해 압착될 수 있다. 상기 헤드부(85)에는 다수의 압입 돌기(88)가 형성될 수 있으며, 상기 압입 돌기(88)는 헤드부(85) 중에서 기둥부(81)와의 경계 영역에 형성될 수 있다. 상기 기둥부(81)는 상대적으로 작은 직경으로 형성되어, 바텀부(55)의 관통 홀(50`)을 관통하여 마운팅 패널(200)의 고정 홈(200`)에 끼워질 수 있다. Referring to FIG. 9, the fixing pin 80 may be formed such that a head portion 85 having a relatively large diameter and a pillar portion 81 having a relatively small diameter are coaxially connected to each other. . The head portion 85 may be formed to have a relatively large diameter and may be pressed against the periphery of the through hole 50 ′ of the bottom portion 55. A plurality of indentation protrusions 88 may be formed in the head portion 85, and the indentation protrusions 88 may be formed in a boundary area of the head portion 85 with the pillar portion 81. The pillar portion 81 may be formed to have a relatively small diameter, and may be inserted into the fixing groove 200 ′ of the mounting panel 200 by passing through the through hole 50 ′ of the bottom portion 55.
도 6 및 도 7을 참조하면, 상기 헤드부(85)은, 바텀부(55)의 상면(55a)으로부터 관통 홀(50`)에 끼워지면서 관통 홀(50`)을 둘러싸는 바텀부(55)의 상면(55a)에 대해 압착될 수 있고, 상기 헤드부(85)에는 바텀부(55)의 상면(55a)을 향하여 돌출된 다수의 압입 돌기(88)가 형성될 수 있다. 상기 압입 돌기(88)는, 관통 홀(50`)을 둘러싸는 바텀부(55)의 상면(55a)에 압착되어 견고하게 고정될 수 있다. 상기 압입 돌기(88)는, 상기 헤드부(85)의 둘레를 따라 방사상으로 배열되어 다수로 형성될 수 있다. 도 6에 도시된 바와 같이, 상기 고정 핀(80)이 압착되는 관통 홀(50`)의 주변에는, 고정 핀(80)의 압입 돌기(88)에 의한 압입 흔적(88`)이 형성될 수 있으며, 관통 홀(50`)의 주변을 따라 방사상으로 다수의 압입 흔적(88`)이 형성될 수 있다. 6 and 7, the head portion 85 is fitted into the through hole 50 ′ from the top surface 55 a of the bottom portion 55 and surrounds the bottom hole 55 ′. It may be pressed against the upper surface (55a) of the, and the head portion 85 may be formed with a plurality of indentation projections 88 protruding toward the upper surface (55a) of the bottom portion (55). The indentation protrusion 88 may be firmly fixed to the upper surface 55a of the bottom portion 55 surrounding the through hole 50`. The indentation protrusions 88 may be arranged in a radial manner along a circumference of the head portion 85 to be formed in plural. As shown in FIG. 6, the indentation trace 88 ′ by the indentation protrusion 88 of the fixing pin 80 may be formed around the through hole 50 ′ where the fixing pin 80 is pressed. In addition, a plurality of indentation marks 88` may be formed radially along the periphery of the through hole 50`.
본 발명의 일 실시형태에서, 상기 고정 핀(80)과 바텀부(55)는, 나사 결합을 형성하는 것이 아니며, 펀치(P, punch)의 높은 압력에 의해 압입되는 것이므로, 고정 핀(80)이 끼워지는 관통 홀(50`)의 측벽에는 나선이 형성되지 않는다. 상기 바텀부(55)는 사이드부(51)로부터 일체로 연장되며, 바텀부(55)와 사이드부(51)를 포함하는 사이드 플레이트(50)는 박형의 금속 판재로 형성될 수 있으므로, 박형의 두께를 갖는 바텀부(55)의 관통 홀(50`)에 나선을 형성하는 것은 쉽지 않다. 이에, 본 발명에서는 박형의 두께를 갖는 바텀부(55)와 고정 핀(80) 간의 결합에, 나사 결합을 적용하지 않고 펀치(P, punch)의 높은 압력에 기반하는 압입 방식으로 바텀부(55)와 고정 핀(80)을 서로 결합시킨다. In one embodiment of the present invention, the fixing pin 80 and the bottom portion 55 does not form a screw coupling, but is press-fitted by the high pressure of the punch (P, punch), the fixing pin 80 No spiral is formed on the sidewall of the through hole 50 '. The bottom portion 55 extends integrally from the side portion 51, and the side plate 50 including the bottom portion 55 and the side portion 51 may be formed of a thin metal plate, It is not easy to form a spiral in the through hole 50 'of the bottom portion 55 having a thickness. Thus, in the present invention, the bottom portion 55 is formed in a press-fitting manner based on the high pressure of the punch P without applying screwing to the bottom portion 55 having a thin thickness and the fixing pin 80. ) And fixing pins 80 are coupled to each other.
본 발명과 달리, 바텀부(55)와 고정 핀(80) 간의 나사 결합을 형성하려면, 나선 형성에 충분한 정도로 바텀부(55)의 두께를 증가시킬 필요가 있으나, 바텀부(55)의 두께 증가는, 바텀부(55) 상에 지지되는 배터리 셀(10)의 높이를 높이게 되고, 결과적으로 전체 배터리 팩(100)의 높이를 증가시키게 되어, 단위 체적 대비 에너지 밀도 측면에서 바람직하지 않다.Unlike the present invention, in order to form a screw coupling between the bottom portion 55 and the fixing pin 80, it is necessary to increase the thickness of the bottom portion 55 to an extent sufficient to form a spiral, but the thickness of the bottom portion 55 is increased. In this case, the height of the battery cell 10 supported on the bottom part 55 is increased, and as a result, the height of the entire battery pack 100 is increased, which is not preferable in terms of energy density to unit volume.
도 7을 참조하면, 상기 고정 핀(80)은, 고정 핀(80)을 벗어난 바텀부(55)의 상면(55a) 위로 추가적인 높이를 형성하지 않을 수 있다. 예를 들어, 상기 고정 핀(80)은, 헤드부(85)와 기둥부(81)를 포함할 수 있는데, 상기 헤드부(85)의 상면(85a)은, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a)과 실질적으로 동일한 편평한 평면을 형성하거나, 또는 상기 헤드부(85)의 상면(85a)은, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a) 보다 낮은 레벨을 형성할 수 있다. 여기서, 바텀부(55)의 상면(55a)이란, 바텀부(55) 중에서 배터리 셀(10)을 향하는 면을 의미할 수 있다. 유사하게, 고정 핀(80)의 상면 또는 헤드부(85)의 상면(85a)이란, 고정 핀(80) 또는 헤드부(85) 중에서 배터리 셀(10)을 향하는 면을 의미할 수 있다. 그리고, 고정 핀(80)을 벗어난 바텀부(55)의 상면(55a) 또는 헤드부(85)를 벗어난 바텀부(55)의 상면(55a)이란, 바텀부(55)의 상면(55a) 중에서 고정 핀(80) 또는 헤드부(85)에 의해 압착되지 않은 비압착면을 의미할 수 있고, 고정 핀(80) 또는 헤드부(85)에 의해 압착되지 않고 전체적으로 평탄하게 형성된 면을 의미할 수 있다. Referring to FIG. 7, the fixing pin 80 may not form an additional height above the top surface 55a of the bottom portion 55 that is beyond the fixing pin 80. For example, the fixing pin 80 may include a head portion 85 and a pillar portion 81, and the upper surface 85a of the head portion 85 is bottomed out of the head portion 85. The upper surface 55a of the upper part 55a of the part 55 forms the same flat plane, or the upper surface 85a of the head part 85 is the upper surface 55a of the bottom part 55 outside the head part 85. Lower levels can be formed. Here, the upper surface 55a of the bottom portion 55 may mean a surface of the bottom portion 55 that faces the battery cell 10. Similarly, the upper surface of the fixing pin 80 or the upper surface 85a of the head portion 85 may mean a surface of the fixing pin 80 or the head portion 85 facing the battery cell 10. The upper surface 55a of the bottom portion 55 deviating from the fixing pin 80 or the upper surface 55a of the bottom portion 55 deviating from the head portion 85 is the upper surface 55a of the bottom portion 55. It may mean a non-compression surface which is not compressed by the fixing pin 80 or the head 85, and may mean a surface that is not flattened by the fixing pin 80 or the head 85. have.
상기 고정 핀(80)이 관통 홀(50`) 주변에 대해 압착되면서 고정 핀(80)의 헤드부(85)는 관통 홀(50`)을 둘러싸는 바텀부(55)의 상면(55a)에 대해 압착되며, 이때, 상기 헤드부(85)는, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a), 그러니까, 평탄한 바텀부(55)의 상면(55a)을 기준으로, 바텀부(55)의 두께 방향을 따라 하방으로 소정 깊이만큼 인입될 수 있다. 이에 따라, 상기 헤드부(85)의 상면(85a)은, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a)과 같거나 또는 헤드부(85)를 벗어난 바텀부(55)의 상면(55a) 보다 낮은 레벨을 형성할 수 있다. As the fixing pin 80 is pressed against the periphery of the through hole 50`, the head portion 85 of the fixing pin 80 is formed on the upper surface 55a of the bottom portion 55 surrounding the through hole 50`. Is pressed against the upper surface 55a of the bottom portion 55 outside the head portion 85, that is, the upper surface 55a of the flat bottom portion 55 It may be drawn downward by a predetermined depth along the thickness direction of the part 55. Accordingly, the top surface 85a of the head portion 85 is the same as the top surface 55a of the bottom portion 55 outside the head portion 85 or of the bottom portion 55 outside the head portion 85. The level lower than the upper surface 55a can be formed.
도 10에는, 본 발명과 대비되는 비교에에 따른 고정 핀의 결합 구조가 도시되어 있다. 10 shows a coupling structure of a fixing pin according to a comparison compared with the present invention.
도면을 참조하면, 비교예에서는, 본 발명과 달리, 고정 핀(8)의 헤드부(5)가 관통 홀(50`)을 둘러싸는 바텀부(55)의 상면(55a) 위로 덧대어지는 형태로 걸쳐지면서, 상기 헤드부(5)는 바텀부(55)의 상면(55a)으로부터 추가적인 높이(h)를 형성하게 되고, 바텀부(55)의 상면(55a)으로부터 돌출된 헤드부(5)의 상면(5a)은, 배터리 셀(10)을 들어올리게 되어 배터리 팩(100)의 높이를 증가시키고, 배터리 팩(100)의 단위 체적 대비 에너지 밀도를 떨어뜨리게 된다.Referring to the drawings, in the comparative example, unlike the present invention, the head portion 5 of the fixing pin 8 is padded over the top surface 55a of the bottom portion 55 surrounding the through hole 50 '. Over, the head portion 5 forms an additional height h from the top surface 55a of the bottom portion 55 and of the head portion 5 protruding from the top surface 55a of the bottom portion 55. The upper surface 5a lifts the battery cell 10 to increase the height of the battery pack 100 and lower the energy density relative to the unit volume of the battery pack 100.
도 7에 도시된 본 발명의 실시형태에서, 상기 고정 핀(80)의 헤드부(85)는 관통 홀(50`)을 둘러싸는 바텀부(55)의 상면(55a)에 대해 압착되면서, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a), 그러니까 평탄한 바텀부(55)의 상면(55a)을 기준으로, 바텀부(55)의 두께 방향을 따라 하방으로 소정 깊이만큼 인입되며, 도 10에 도시된 바와 같이, 바텀부(55)의 상면(55a) 위로 덧대어지는 형태로 결합되지 않는다. 이에 따라, 헤드부(85)의 상면(85a)과, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a)은 실질적을 편평하게 형성되거나, 또는 헤드부(85)의 상면(85a)은, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a) 보다 더 낮은 레벨을 형성할 수 있다. 즉, 적어도 상기 헤드부(85)의 상면(85a)은, 헤드부(85)를 벗어난 바텀부(55)의 상면(55a)으로부터 상방으로 돌출되지 않을 수 있다. 예를 들어, 도 7에 도시된 바와 같이, 본 발명의 일 실시형태에서, 상기 헤드부(85)의 상면(85a)과 바텀부(55)의 상면(55a)은 실질적으로 편평하게 형성되어 배터리 셀(10)을 함께 지지해줄 수 있다.In the embodiment of the present invention shown in FIG. 7, the head portion 85 of the fixing pin 80 is pressed against the upper surface 55a of the bottom portion 55 surrounding the through hole 50 ′. Based on the upper surface 55a of the bottom portion 55 deviating from the portion 85, that is, the upper surface 55a of the flat bottom portion 55, the bottom portion 55 is drawn downward along a thickness direction of the bottom portion 55 by a predetermined depth. As illustrated in FIG. 10, the pads are not coupled in a form that is padded over the top surface 55a of the bottom portion 55. Accordingly, the upper surface 85a of the head portion 85 and the upper surface 55a of the bottom portion 55 deviating from the head portion 85 are formed to be substantially flat or the upper surface 85a of the head portion 85. ) May form a level lower than the top surface 55a of the bottom portion 55 out of the head portion 85. That is, at least the top surface 85a of the head portion 85 may not protrude upward from the top surface 55a of the bottom portion 55 that is out of the head portion 85. For example, as shown in FIG. 7, in one embodiment of the present invention, the upper surface 85a of the head portion 85 and the upper surface 55a of the bottom portion 55 are formed to be substantially flat so that the battery The cells 10 can be supported together.
이와 같이, 바텀부(55)의 상면(55a)과, 고정 핀(80) 내지는 헤드부(85)의 상면(85a)의 상대적인 고저에 따라, 배터리 팩(100)의 높이가 달라지게 되며, 배터리 팩(100)의 단위 체적 대비 에너지 밀도가 달라지게 된다. 본 발명의 실시형태에서는 고정 핀(80) 내지는 헤드부(85)의 상면(85a)이 바텀부(55)의 상면(55a)으로부터 돌출되지 않도록, 고정 핀(80) 내지는 헤드부(85)의 상면(85a)이 바텀부(55)의 상면(55a)과 실질적으로 편평하게 형성되거나 또는 바텀부(55)의 상면(55a) 보다 낮은 레벨에 형성됨으로써, 고정 핀(80)의 결합에 따라 배터리 팩(100)의 에너지 밀도가 저하되지 않는다.As described above, the height of the battery pack 100 varies depending on the relative height of the upper surface 55a of the bottom portion 55 and the upper surface 85a of the fixing pin 80 or the head portion 85. The energy density relative to the unit volume of the pack 100 will vary. In the embodiment of the present invention, the fixing pin 80 or the head portion 85 of the fixing pin 80 or the head portion 85 does not protrude from the upper surface 55a of the bottom portion 55. The upper surface 85a is formed to be substantially flat with the upper surface 55a of the bottom portion 55 or is formed at a level lower than the upper surface 55a of the bottom portion 55, so that the battery is coupled with the fixing pin 80. The energy density of the pack 100 does not decrease.
도 11에는, 도 2에 도시된 배터리 팩의 저면을 도시한 도면으로, 고정 핀의 배치를 설명하기 위한 도면이 도시되어 있다. FIG. 11 is a view illustrating a bottom surface of the battery pack shown in FIG. 2, illustrating a layout of the fixing pins.
도면을 참조하면, 상기 고정 핀(80)은, 상기 바텀부(55)의 길이 방향을 따라 서로로부터 이격되도록 간헐적인 위치에 다수로 형성될 수 있다. 상기 고정 핀(80)은, 배터리 팩(100)이 장착되는 마운팅 패널(200)에 대해 배터리 팩(100)을 위치 고정하는 역할을 하므로, 진동에 취약한 배터리 팩(100)의 중앙 위치(C)에 집중적으로 배치될 수 있다. 예를 들어, 상기 고정 핀(80)은, 바텀부(55)의 길이 방향을 따라 양단 위치(E) 보다는, 중앙 위치(C)에 집중되어 배치될 수 있고, 바텀부(55)의 양단 위치(E) 또는 이와 가까운 위치 보다는, 바텀부(55)의 중앙 위치(C) 또는 이와 가까운 위치에 상대적으로 많이 배치될 수 있다. Referring to the drawings, the fixing pin 80 may be formed in plural in an intermittent position so as to be spaced apart from each other along the longitudinal direction of the bottom portion 55. The fixing pin 80 serves to fix the position of the battery pack 100 with respect to the mounting panel 200 on which the battery pack 100 is mounted, and thus, the center position C of the battery pack 100 that is vulnerable to vibration. Can be placed intensively. For example, the fixing pin 80 may be disposed in a central position C, rather than both end positions E along the longitudinal direction of the bottom portion 55, and both end positions of the bottom portion 55. Rather than (E) or a position close thereto, the center portion C of the bottom portion 55 or a position closer thereto may be disposed relatively.
배터리 팩(100)의 진동을 양단이 고정된 현의 진동으로 볼 때, 현의 중앙 위치에서 최대 진폭이 발생될 수 있으므로, 배터리 팩(100)의 중앙 위치(C), 그러니까, 배터리 셀(10)을 가로지르는 바텀부(55)의 길이 방향을 따라 중앙 위치(C) 및 이와 가까운 위치에 고정 핀(80)을 집중적으로 배치함으로써 배터리 팩(100)의 진동에 따른 배터리 팩(100)의 손상을 효과적으로 방지할 수 있다. 적어도 상기 배터리 팩(100)의 중앙 위치(C), 그러니까, 배터리 셀(10)을 가로지르는 바텀부(55)의 길이 방향을 따라 중앙 위치(C)에는 고정 핀(80)이 형성되는 것이 바람직하며, 상기 중앙 위치(C)의 고정 핀(80)을 중심으로, 대칭적인 위치에 고정 핀(80)이 분산되어 형성될 수 있다.When the vibration of the battery pack 100 is viewed as the vibration of the string fixed at both ends, the maximum amplitude may be generated at the center position of the string, and thus, the center position C of the battery pack 100, that is, the battery cell 10. ) By damaging the battery pack 100 due to vibration of the battery pack 100 by intensively arranging the fixing pin 80 at a central position C and a position close thereto along the longitudinal direction of the bottom portion 55 crossing the). Can be effectively prevented. A fixing pin 80 is preferably formed at the central position C of at least the battery pack 100, that is, at the central position C along the longitudinal direction of the bottom portion 55 crossing the battery cell 10. In addition, the fixing pin 80 may be formed in a symmetrical position with respect to the fixing pin 80 at the central position C. FIG.
상기 배터리 팩(100)의 길이 방향을 따라 양단 위치(E), 그러니까, 바텀부(55)의 길이 방향을 따라 양단 위치(E)에도 고정 핀(80)이 형성될 수 있다. 다만, 본 발명의 일 실시형태에서, 상기 배터리 셀(10)의 배열 방향을 따라 양단 위치(E)의 엔드 블록(40)에는 체결 공(40`)을 관통하여 부쉬 부재(미도시)가 끼워질 수 있고, 상기 부쉬 부재(미도시)가 체결 공(40`)을 관통하여 마운팅 패널(200)에 끼워짐으로써, 배터리 팩(100)의 길이 방향을 따라 양단 위치(E)를 고정시킬 수 있으므로, 배터리 팩(100)의 양단 위치(E)에는 별도의 고정 핀(80)이 형성되지 않을 수 있다. 상기 고정 핀(80) 및 부쉬 부재(미도시)는 다 함께 마운팅 패널(200) 상에서 배터리 팩(100)을 위치 고정시킬 수 있고, 배터리 팩(100)을 마운팅 패널(200) 상에 장착시킬 수 있다.Fixing pins 80 may be formed at both end positions E in the longitudinal direction of the battery pack 100, that is, at both end positions E in the longitudinal direction of the bottom part 55. However, in one embodiment of the present invention, a bushing member (not shown) is inserted into the end block 40 at both end positions E along the arrangement direction of the battery cell 10 so as to pass through the fastening hole 40`. The bushing member (not shown) may be inserted into the mounting panel 200 by passing through the fastening hole 40 ′, thereby fixing both end positions E along the length direction of the battery pack 100. Therefore, separate fixing pins 80 may not be formed at both end positions E of the battery pack 100. The fixing pin 80 and the bushing member (not shown) may together fix the battery pack 100 on the mounting panel 200, and mount the battery pack 100 on the mounting panel 200. have.
본 발명의 일 실시형태에서, 상기 고정 핀(80)은, 배터리 팩(100)의 길이 방향, 그러니까, 바텀부(55)의 길이 방향을 따라 양단 위치(E) 보다는 진동에 취약한 중앙 위치(C)에 상대적으로 가깝게 배치될 수 있다. 도면으로 도시되어 있지는 않지만, 바텀부(55)의 길이 방향을 따라 다수의 고정 핀(80)이 형성되는 실시형태에서, 서로 이웃한 고정 핀(80) 간의 간격은, 양단 위치(E)로부터 중앙 위치(C)로 가면서 점차 감소할 수 있다. 즉, 상기 고정 핀(80)은, 양단 위치(E) 보다는 중앙 위치(C)에서 보다 촘촘한 간격으로 밀집되게 형성될 수 있다. In one embodiment of the present invention, the fixing pin 80, the central position (C) more susceptible to vibration than the end position (E) in the longitudinal direction of the battery pack 100, that is, the longitudinal direction of the bottom portion (55) Can be placed relatively close to Although not shown in the drawings, in an embodiment in which a plurality of fixing pins 80 are formed along the longitudinal direction of the bottom portion 55, the distance between the fixing pins 80 adjacent to each other is centered from both end positions E. FIG. It may decrease gradually as it goes to position (C). That is, the fixing pin 80 may be formed more densely at a tighter spacing at the center position C than at both end positions E. FIG.
본 발명의 일 실시형태에서, 상기 고정 핀(80)은, 배터리 팩(100)의 길이 방향을 따라 중앙 위치(C) 외에, 양단 위치(E)와 중앙 위치(C) 사이의 제1 위치(L1)에도 형성됨으로써, 상대적으로 다수의 배터리 셀(10)을 포함하여 길게 연장되는 고출력용 배터리 팩(100)을 안정적으로 위치 고정시킬 수 있다. 이때, 상기 제1 위치(L1)는, 배터리 팩(100)의 진동을 효과적으로 억제할 수 있도록 배터리 팩(100)의 길이 방향을 따라 양단 위치(E) 보다는 중앙 위치(C)에 가깝게 설계될 수 있다. In one embodiment of the invention, the fixing pin 80, in addition to the center position (C) along the longitudinal direction of the battery pack 100, the first position (between the end position (E) and the center position (C) ( Also formed in the L1, it is possible to stably position the high output battery pack 100 including a relatively large number of battery cells 10 extending. In this case, the first position L1 may be designed closer to the center position C than the both ends position E in the longitudinal direction of the battery pack 100 so as to effectively suppress the vibration of the battery pack 100. have.
도 12에는, 도 5에 도시된 전원공급장치의 변형된 실시형태가 도시되어 있다. In FIG. 12 a modified embodiment of the power supply shown in FIG. 5 is shown.
도면을 참조하면, 본 발명의 전원공급장치는, 배터리 팩(100) 및 상기 배터리 팩(100)이 장착되는 마운팅 패널(200)을 포함할 수 있다. 상기 마운팅 패널(200)은 배터리 팩(100)을 장착하고 배터리 팩(100)으로부터 구동 전원을 공급받는 기기, 예를 들어, 전기 자동차와 같은 기기 내부에 마련될 수 있다.Referring to the drawings, the power supply apparatus of the present invention may include a battery pack 100 and a mounting panel 200 on which the battery pack 100 is mounted. The mounting panel 200 may be provided in a device in which the battery pack 100 is mounted and receives driving power from the battery pack 100, for example, an electric vehicle.
도 12에 도시된 전원공급장치에서는, 하나의 마운팅 패널(200) 상에 다수의 배터리 팩(100)이 병렬적으로 장착될 수 있다. 예를 들어, 고출력 고용량의 전기적인 출력이 요구되는 경우, 하나의 마운팅 패널(200)에 다수의 배터리 팩(100)이 병렬적으로 장착될 수 있으며, 전기 자동차와 같이 높은 출력이 요구되는 경우에, 둘 이상 다수의 배터리 팩(100)이 장착될 수 있다. 이때, 상기 배터리 팩(100)은, 사이드 플레이트(50)에 끼워진 고정 핀(80)을 통하여 마운팅 패널(200) 상에 위치 고정될 수 있으며, 특히, 사이드 플레이트(50)의 사이드부(51)로부터 배터리 셀(10)을 감싸도록 내측 방향으로 절곡된 바텀부(55) 측에 고정 핀(80)을 형성함으로써, 하나의 마운팅 패널(200) 상에서 서로 이웃하게 장착되는 배터리 팩(100)이 밀집된 형태로 컴팩트하게 장착될 수 있다. 즉, 서로 이웃하게 장착되는 배터리 팩(100) 사이의 제1 간격(d1)은, 배터리 팩(100) 사이의 간섭, 예를 들어, 물리적인 간섭이나 열적인 간섭 또는 전기적인 간섭을 방지할 정도로의 유격만으로 충분하며, 제1 간격(d1)을 필요 이상으로 크게 설정할 필요가 없다. In the power supply shown in FIG. 12, a plurality of battery packs 100 may be mounted in parallel on one mounting panel 200. For example, when a high output high capacity electrical output is required, a plurality of battery packs 100 may be mounted in one mounting panel 200 in parallel, and when a high output such as an electric vehicle is required Two or more battery packs 100 may be mounted. In this case, the battery pack 100 may be fixed on the mounting panel 200 through a fixing pin 80 fitted to the side plate 50, and in particular, the side part 51 of the side plate 50. By forming the fixing pin 80 on the side of the bottom portion 55 which is bent inwardly to surround the battery cells 10, the battery packs 100 mounted adjacent to each other on one mounting panel 200 are concentrated. It can be compactly mounted in the form. That is, the first interval d1 between the battery packs 100 mounted adjacent to each other may be sufficient to prevent interference between the battery packs 100, for example, physical interference, thermal interference, or electrical interference. It is sufficient to have a clearance of, and it is not necessary to set the first interval d1 larger than necessary.
도 13에는 본 발명과 대비되는 비교예에 따른 전원공급장치가 도시되어 있다. Figure 13 shows a power supply according to a comparative example compared with the present invention.
도면을 참조하면, 상기 비교예에 따른 전원공급장치는, 마운팅 패널(200)과, 상기 마운팅 패널(200) 상에 다수로 장착된 배터리 팩(100`)을 포함한다. 상기 비교예에서, 배터리 팩(100`)의 위치 고정을 위한 고정 부재(18)는, 사이드 플레이트(50`)의 날개부(58`)를 관통하여 마운팅 패널(200)의 고정 홈(200`)에 끼워진다. 이때, 상기 고정 부재(18)는, 사이드부(51`)로부터 배터리 셀(10)을 둘러싸도록 내측 방향으로 절곡된 바텀부(55`)에 끼워지지 않고, 사이드부(51`)로부터 배터리 셀(10)과 반대되는 외측 방향으로 절곡되어 형성된 별도의 날개부(58`)에 끼워진다. 이에 따라, 상기 배터리 팩(100`)의 외측 방향으로는, 별도의 날개부(58`)가 형성되며, 배터리 팩(100`)의 양편으로 형성된 날개부(58`)에 의해 배터리 팩(100)의 폭 사이즈가 증가하게 된다.Referring to the drawings, the power supply apparatus according to the comparative example includes a mounting panel 200 and a plurality of battery packs 100` mounted on the mounting panel 200. In the comparative example, the fixing member 18 for fixing the position of the battery pack 100 ′ passes through the wing portion 58 ′ of the side plate 50 ′ and fixes the fixing groove 200 ′ of the mounting panel 200. ) At this time, the fixing member 18 is not fitted to the bottom portion 55 'bent inward so as to surround the battery cell 10 from the side portion 51', and the battery cell from the side portion 51 '. It is fitted to a separate wing portion 58` which is bent in an outward direction opposite to 10. Accordingly, a separate wing 58 'is formed in an outer direction of the battery pack 100', and the battery pack 100 is formed by wings 58 'formed at both sides of the battery pack 100'. ) Width size is increased.
비교예에 따른 전원공급장치에서, 서로 이웃한 배터리 팩(100`) 사이의 제2 간격(d2)은, 배터리 팩(100`)의 양편으로 형성된 날개부(58`)에 의해 증가될 필요가 있으며, 적어도 도 12에 도시된 본 발명의 제1 간격(d1) 보다는 배터리 팩(100`)의 양편으로 형성된 날개부(58`)의 폭만큼 증가될 필요가 있다. 이러한 비교예에서는, 다수의 배터리 팩(100`)이 밀집된 형태로 장착되지 못하여, 동일한 면적의 마운팅 패널(200) 상에 장착 가능한 배터리 팩(100`)의 개수가 감소하고, 에너지 밀도가 떨어지게 된다. In the power supply device according to the comparative example, the second interval d2 between the battery packs 100 'neighboring each other needs to be increased by the wings 58' formed on both sides of the battery pack 100 '. In addition, it is necessary to increase the width of the wing portion 58 'formed at both sides of the battery pack 100' rather than at least the first interval d1 of the present invention shown in FIG. In this comparative example, the plurality of battery packs 100` may not be mounted in a compact form, so that the number of battery packs 100` that can be mounted on the mounting panel 200 having the same area is reduced, and the energy density is lowered. .
본 발명은 첨부된 도면에 도시된 실시예를 참고로 설명되었으나, 이는 예시적인 것에 불과하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 수 있을 것이다.Although the present invention has been described with reference to the embodiments illustrated in the accompanying drawings, it is merely exemplary, and various modifications and equivalent other embodiments are possible from those skilled in the art to which the present invention pertains. You will understand the point.
본 발명은, 충전 및 방전이 가능한 에너지원으로서의 배터리 팩 및 배터리 팩을 구동 전원으로 사용하는 다양한 기기에 적용될 수 있다.The present invention can be applied to a battery pack as an energy source capable of charging and discharging and various devices using the battery pack as a driving power source.
Claims (19)
- 각각, 전극 단자가 형성된 단자면과, 상기 단자면의 반대 편에 형성된 바닥면과, 상기 단자면과 바닥면 사이의 측면을 포함하는 다수의 배터리 셀;A plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;상기 배터리 셀의 측면을 가로질러 연장되는 사이드부와, 상기 사이드부로부터 배터리 셀을 둘러싸도록 절곡되어 배터리 셀의 바닥면을 가로질러 연장되는 바텀부를 포함하는 사이드 플레이트; 및A side plate including a side portion extending across the side of the battery cell and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell; And상기 바텀부로부터 배터리 셀과 반대 방향으로 돌출되도록 바텀부에 끼워진 고정 핀;을 포함하는 배터리 팩. And a fixing pin fitted to the bottom portion to protrude from the bottom portion in a direction opposite to the battery cell.
- 제1항에 있어서,The method of claim 1,상기 바텀부에는 상기 고정 핀이 끼워지기 위한 관통 홀이 형성되는 것을 특징으로 하는 배터리 팩.The bottom part is a battery pack, characterized in that the through hole for the fixing pin is formed.
- 제2항에 있어서, The method of claim 2,상기 고정 핀은, 배터리 셀을 향하는 바텀부의 상면으로부터 관통 홀에 끼워지며, 관통 홀을 둘러싸는 바텀부의 상면에 대해 압착되는 것을 특징으로 하는 배터리 팩. The fixing pin is inserted into the through hole from the upper surface of the bottom portion facing the battery cell, the battery pack, characterized in that pressed against the upper surface of the bottom portion surrounding the through hole.
- 제2항에 있어서,The method of claim 2,상기 고정 핀은, 상대적으로 큰 직경의 헤드부와, 상대적으로 작은 직경의 기둥부를 포함하고, The fixing pin includes a relatively large diameter head portion and a relatively small diameter pillar portion,상기 헤드부는, 상기 관통 홀을 둘러싸는 바텀부의 상면에 대해 압입된 것을 특징으로 하는 배터리 팩. The head part, the battery pack, characterized in that the press-fitted to the upper surface of the bottom portion surrounding the through hole.
- 제4항에 있어서, The method of claim 4, wherein상기 고정 핀의 헤드부에는, 바텀부의 상면을 향하여 돌출된 압입 돌기가 형성되어 있는 것을 특징으로 하는 배터리 팩.The head of the fixing pin, the battery pack, characterized in that the pressing projection protruding toward the upper surface of the bottom portion is formed.
- 제1항에 있어서,The method of claim 1,상기 고정 핀과 바텀부는, 일체적으로 결합되는 것을 특징으로 하는 배터리 팩.The fixing pin and the bottom portion, characterized in that the battery pack is integrally coupled.
- 제6항에 있어서,The method of claim 6,상기 고정 핀과 바텀부는, 서로를 구별할 수 있는 경계선에 의해 구획되어 경계선을 사이에 두고 불연속적으로 연결되어 있는 것을 특징으로 하는 배터리 팩. The fixing pin and the bottom portion are partitioned by a boundary line that can distinguish from each other, the battery pack, characterized in that discontinuously connected across the boundary line.
- 제7항에 있어서,The method of claim 7, wherein상기 고정 핀과 바텀부는, 서로 다른 소재로 형성된 것을 특징으로 하는 배터리 팩.The fixing pin and the bottom portion, the battery pack, characterized in that formed of different materials.
- 제1항에 있어서,The method of claim 1,상기 고정 핀의 상면은, 상기 고정 핀을 벗어난 바텀부의 상면과 실질적으로 편평하게 형성되거나, 또는 상기 고정 핀의 상면은, 상기 고정 핀을 벗어난 바텀부의 상면 보다 낮은 레벨에 형성되는 것을 특징으로 하는 배터리 팩.The upper surface of the fixing pin is formed to be substantially flat with the upper surface of the bottom portion out of the fixing pin, or the upper surface of the fixing pin is formed at a level lower than the upper surface of the bottom portion out of the fixing pin pack.
- 제9항에 있어서,The method of claim 9,상기 고정 핀은, 상기 고정 핀을 벗어난 바텀부의 상면을 기준으로 바텀부의 두께 방향을 따라 하방으로 인입되어 있는 것을 특징으로 하는 배터리 팩.The fixing pin is led downward in the thickness direction of the bottom portion relative to the upper surface of the bottom portion out of the fixing pin.
- 제9항에 있어서,The method of claim 9,상기 고정 핀의 상면과 상기 고정 핀을 벗어난 바텀부의 상면은, 상기 배터리 셀의 바닥면을 함께 지지하는 것을 특징으로 하는 배터리 팩.And an upper surface of the fixing pin and an upper surface of the bottom portion deviating from the fixing pin support the bottom surface of the battery cell together.
- 제1항에 있어서,The method of claim 1,상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 서로로부터 이격되도록 간헐적인 위치에 다수로 배치되는 것을 특징으로 하는 배터리 팩. The fixing pin is a battery pack, characterized in that disposed in a plurality in an intermittent position to be spaced apart from each other along the longitudinal direction of the bottom portion.
- 제12항에 있어서,The method of claim 12,상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 중앙 위치에 형성되는 것을 특징으로 하는 배터리 팩. The fixing pin is a battery pack, characterized in that formed in the center position in the longitudinal direction of the bottom portion.
- 제13항에 있어서,The method of claim 13,상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 중앙 위치 외에, 양단 위치와 중앙 위치 사이의 제1 위치에도 형성되는 것을 특징으로 하는 배터리 팩.The fixing pin is formed in the first position between the end position and the center position, in addition to the center position in the longitudinal direction of the bottom portion.
- 제14항에 있어서,The method of claim 14,상기 제1 위치는, 상기 바텀부의 길이 방향을 따라 양단 위치 보다는 중앙 위치에 상대적으로 근접한 위치인 것을 특징으로 하는 배터리 팩. The first position is a battery pack, characterized in that the position relatively closer to the center position than the end position along the longitudinal direction of the bottom portion.
- 제12항에 있어서,The method of claim 12,상기 고정 핀은, 상기 바텀부의 길이 방향을 따라 양단 위치 보다는 중앙 위치에 집중되어 형성되는 것을 특징으로 하는 배터리 팩. The fixing pin is a battery pack, characterized in that formed in a central position rather than both ends in the longitudinal direction of the bottom portion.
- 제1항에 있어서,The method of claim 1,상기 바텀부는, 상기 배터리 셀의 바닥면 중에서 사이드 플레이트와 인접한 가장자리를 가로질러 연장되며, The bottom portion extends across an edge adjacent to a side plate of a bottom surface of the battery cell,상기 바닥면의 중앙 위치는, 상기 바텀부로부터 노출되어 있는 것을 특징으로 하는 배터리 팩. The center position of the said bottom surface is exposed from the said bottom part, The battery pack characterized by the above-mentioned.
- 각각, 전극 단자가 형성된 단자면과, 상기 단자면의 반대 편에 형성된 바닥면과, 상기 단자면과 바닥면 사이의 측면을 포함하는 다수의 배터리 셀;A plurality of battery cells each including a terminal surface on which electrode terminals are formed, a bottom surface formed on an opposite side of the terminal surface, and a side surface between the terminal surface and the bottom surface;상기 배터리 셀의 측면을 가로질러 연장되는 사이드부와, 상기 사이드부로부터 배터리 셀을 둘러싸도록 절곡되어 배터리 셀의 바닥면을 가로질러 연장되는 바텀부를 포함하는 사이드 플레이트; A side plate including a side portion extending across the side of the battery cell, and a bottom portion bent to surround the battery cell from the side portion and extending across the bottom surface of the battery cell;상기 바텀부로부터 배터리 셀과 반대 방향으로 돌출되도록 바텀부에 끼워진 고정 핀; 및A fixing pin fitted to a bottom part to protrude from the bottom part in a direction opposite to the battery cell; And상기 바텀부로부터 돌출된 고정 핀이 끼워지도록 고정 홀이 형성된 마운팅 패널;을 포함하는 전원공급장치. And a mounting panel having a fixing hole formed therein so that the fixing pin protruding from the bottom portion is inserted therein.
- 제18항에 있어서, The method of claim 18,상기 고정 홀의 깊이는, 상기 바텀부로부터 돌출된 고정 핀의 돌출 길이 보다 깊게 형성된 것을 특징으로 하는 전원공급장치.The depth of the fixing hole, the power supply device characterized in that formed deeper than the protruding length of the fixing pin protruding from the bottom.
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WO2023071265A1 (en) * | 2021-11-01 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Battery box, battery, and electric apparatus |
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KR20220101459A (en) * | 2021-01-11 | 2022-07-19 | 주식회사 엘지에너지솔루션 | Battery module having a structure capable of preventing fire and explosion, and battery pack and vehicle including the same |
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