KR20190071027A - Battery for electric tool having termanal of different material - Google Patents

Battery for electric tool having termanal of different material Download PDF

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Publication number
KR20190071027A
KR20190071027A KR1020170171259A KR20170171259A KR20190071027A KR 20190071027 A KR20190071027 A KR 20190071027A KR 1020170171259 A KR1020170171259 A KR 1020170171259A KR 20170171259 A KR20170171259 A KR 20170171259A KR 20190071027 A KR20190071027 A KR 20190071027A
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terminal
battery
power tool
electric tool
battery cell
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KR1020170171259A
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Korean (ko)
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KR102002489B1 (en
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임지현
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계양전기 주식회사
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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H01M2/1022—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/562—Terminals characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Computer Hardware Design (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The present invention relates to an electric tool battery which includes: a lower cover; an upper cover which forms a predetermined accommodation space inside by being coupled with the lower cover; a battery cell which is accommodated in the accommodation space and supplies power to an electric tool; and a PCB which is seated on the upper surface of the battery cell while electrically controlling power supplied from the battery cell to the electric tool. A plurality of terminals are installed on the upper surface of the PCB in a row to supply power to the electric tool, are coupled with a terminal binding member included in the electric tool, and have the outer surface surrounding the inner surface in contact with the terminal binding member, with a material relatively rigid than the inner surface. The inner surface is made of a highly conductive material while forming the outer surface of terminals included in a battery pack to be coupled with the terminal binding member of the electric tool with a relatively rigid material than the inner surface in order to suppress the deformation of a terminal and thus, prevent a short circuit. The present invention is able to increase the use time of a battery by lowering a terminal heating temperature and reducing energy loss while using an electric tool.

Description

이종재질로 형성된 단자를 구비한 전동공구 배터리{BATTERY FOR ELECTRIC TOOL HAVING TERMANAL OF DIFFERENT MATERIAL}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric tool battery having terminals formed of different materials,

본 발명은 전동공구의 배터리에 관한 것으로서, 더욱 상세하게는, 이종재질로 형성된 단자를 구비한 전동공구 배터리에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery of a power tool, and more particularly, to a power tool battery having terminals formed of different materials.

일반적으로 가정이나 공장에서 사용되는 다양한 전동 공구가 개시되어 있으며, 최근에는 휴대용 전동 공구가 널리 사용되고 있다. A variety of power tools generally used in the home or factory have been disclosed, and in recent years, portable power tools have been widely used.

휴대용 전동 공구 중, 전선을 연결하여 전력을 공급하는 전동 공구의 경우 전력공급의 제한이 없어 장시간 사용할 수 있는 장점이 있으나, 전선의 길이 내로 작업공간이 제한되고, 전선이 작업에 방해가 되는 단점이 있다.Among the portable power tools, there is an advantage that the electric power tool that supplies electric power by connecting the electric wires can be used for a long time because there is no limitation of electric power supply. However, there is a disadvantage that the working space is limited within the length of the electric wire, have.

상기 단점을 보완하기 위한 것으로 최근 충전식 배터리를 이용한 전동 공구 가 사용되고 있다.In order to overcome the above disadvantages, a power tool using a rechargeable battery has recently been used.

도 1은 종래의 전동공구용 배터리를 분해하여 도시한 분해사시도이다. 1 is an exploded perspective view of a conventional battery for a power tool.

이들 도면에 도시한 바와 같이, 종래의 전동공구용 배터리팩은 하측에 배치되는 하부커버(10)와 하부커버(10)와 결합되어 배터리셀(30)을 수용할 수 있는 일정한 수용공간(11)을 형성하는 상부커버(20)와, 하부커버(10)의 내면에 안착되어 전동공구 측으로 전원을 공급하는 배터리셀(30)과, 배터리셀(30)의 상면에 안착되어 배터리셀(30)에서 전동공구 측으로 공급되는 전원을 전기적으로 제어하는 피씨비(40)로 구성되어 있다. As shown in these drawings, a conventional battery pack for a power tool includes a lower cover 10 disposed on the lower side, and a fixed accommodation space 11 coupled to the lower cover 10 to receive the battery cell 30. [ A battery cell 30 which is seated on the inner surface of the lower cover 10 and supplies power to the power tool side and an upper cover 20 which is seated on the upper surface of the battery cell 30, And a PCB 40 for electrically controlling power supplied to the power tool side.

하부커버(10)는 전동공구를 사용하지 않고 바닥에 세워 놓을 경우에 그 하면이 지면과 접촉되는 부재로서 상면이 개구 형성되어 있으며, 상부커버(20)와 결합시에 배터리셀(30)을 수용할 수 있는 수용공간(11)을 형성하기 위하여 오목하게 형성되어 있다. The lower cover 10 is a member which is in contact with the ground when the bottom cover 10 is placed on the floor without using a power tool. The upper cover 20 has an upper surface, And is formed to be recessed to form a receiving space 11 that can be used.

상부커버(20)는 하부커버(10)의 상면에 체결되어 외부와 차폐되어 배터리셀(30)이 외부로 노출되지 않도록 내부에 수용하는 수용공간(11)을 형성할 수 있도록 상측으로 볼록하게 형성되어 있다. The upper cover 20 is formed on the upper surface of the lower cover 10 so as to be shielded from the outside so as to be convex upward so as to form a receiving space 11 for receiving the battery cell 30 so that the battery cell 30 is not exposed to the outside. .

배터리셀(30)은 하부커버(10)와 상부커버(20)의 결합에 의하여 형성되는 수용공간(11)에 수용되어 전동공구 측으로 전원을 공급하는 역할을 하는 부재로서, 그 외면에는 별도의 셀홀더(31)에 의하여 외면이 감싸도록 형성되어 있다. The battery cell 30 is housed in a receiving space 11 formed by a combination of the lower cover 10 and the upper cover 20 and serves to supply power to the power tool side, And is formed so as to surround the outer surface thereof by the holder 31.

피씨비(40)는 배터리셀(30)의 상면에 안착되어 배터리셀(30)에서 전동공구 측으로 공급되는 전원을 제어하는 부재로서, 그 표면에는 다양한 회로가 구비되어 있으며, 이러한 피씨비(40)가 배터리셀(30)의 상면에 설치된 상태를 유지할 수 있도록 별도의 피씨비 커버(41)가 구비되어 있다. The PCB 40 is a member that is seated on the upper surface of the battery cell 30 and controls power supplied from the battery cell 30 to the power tool side. The surface of the PCB 40 is provided with various circuits. A separate PCB cover 41 is provided so as to maintain the state of being installed on the upper surface of the cell 30. [

피씨비 커버(41)는 일부가 피씨비(40)와 접촉되고 나머지 일부가 배터리셀(30)을 감싸도록 배터리셀(30)의 외면에 구비되는 별도의 셀홀더(31)에 접촉됨으로써 배터리셀(30) 측으로 이물질이 침투함을 방지하고 배터리셀(30)이 정위치에 고정되도록 하는 역할을 한다. The cover cover 41 contacts a separate cell holder 31 provided on the outer surface of the battery cell 30 such that a part of the cover contacts the cover 40 and a part of the cover contacts the battery cell 30, To prevent foreign matter from penetrating into the battery cell 30 and to fix the battery cell 30 in a fixed position.

그리고, 배터리셀(30)에서 전동공구 측으로 전원을 공급할 수 있도록 피씨비(40)의 상면에는 열을 이루도록 복수로 설치되어 전동공구에 구비된 단자결속부재와 상호 결합되는 단자(42)가 구비되어 있다. A plurality of terminals 42 are provided on the top surface of the PCB 40 so as to supply power from the battery cell 30 to the power tool side so as to be coupled with the terminal binding members of the power tool .

그런데, 이러한 종래의 전동공구용 배터리팩에 있어서, 단자(42)는 전도성이 좋은 구리계열을 사용하는데, 재질의 특성상 전도성은 좋지만 상기 단자결속부재와의 반복적인 착탈에 의하여 변형이 잘 되어서 단자가 벌어지는 현상이 발생하기 때문에 결과적으로 전동공구 측으로 전원을 순조롭게 공급하지 못하는 단락 현상이 발생할 수 있다는 문제점이 있다. In the conventional battery pack for a power tool, the terminal 42 uses a copper-based conductive material. Since the terminal 42 has good conductivity due to the nature of the material, the terminal 42 is easily deformed by repeated attachment / There is a problem that a short circuit phenomenon may occur which can not smoothly supply power to the power tool side.

본 발명은 상기와 같은 문제점을 해결하기 위하여 도출된 것으로서, 배터리팩에 구비되어 전동공구의 단자결속부재와 결합되는 단자의 외면을 내면보다 상대적으로 강성이 강한 재질로 형성함으로써 단자의 변형을 억제하여 단락 현상을 방지함과 동시에 내면은 전도성이 높은 재질로 형성하여 전동공구를 사용중에 단자 발열온도를 낮추고 에너지의 손실을 줄여서 배터리의 사용시간을 증대시킬 수 있는 이종재질로 형성된 단자를 구비한 전동공구 배터리를 제시하는 것을 그 목적으로 한다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a battery pack having an outer surface of a terminal coupled to a terminal coupling member of a power tool, A power tool having a terminal formed of a different material capable of preventing a short circuit and having an inner surface formed of a highly conductive material to reduce the temperature of the terminal heating temperature during use of the power tool and to reduce the energy loss, The purpose is to present a battery.

상기 과제의 해결을 위하여, 본 발명은 하부커버와; 상기 하부커버와 체결되어 내부에 일정한 수용공간을 형성하는 상부커버와; 상기 수용공간에 수용되어 전동공구 측으로 전원을 공급하는 배터리셀과; 상기 배터리셀에서 상기 전동공구 측으로 공급되는 전원을 전기적으로 제어하며 상기 배터리셀의 상면에 안착되는 피씨비를 포함한 전동공구 배터리로서, 상기 전동공구 측으로 전원을 공급하도록 상기 피씨비의 상면에는 행을 이루도록 복수로 설치되어 상기 전동공구에 구비된 단자결속부재와 결속되며 상기 단자결속부재와 접촉되는 내면보다 상기 내면을 감싸는 외면은 상대적으로 강성이 높은 재질로 형성된 단자를 포함한 것을 특징으로 하는 이종재질로 형성된 단자를 구비한 전동공구 배터리를 구비한 전동공구를 제시한다.In order to solve the above problems, An upper cover coupled to the lower cover to form a predetermined accommodation space therein; A battery cell accommodated in the accommodation space and supplying power to the power tool side; An electric tool battery including a battery whose electrical power is supplied from the battery cell to the power tool side and which is seated on an upper surface of the battery cell, And a terminal formed of a material having a relatively high rigidity, the terminal being connected to a terminal binding member provided on the power tool and surrounding the inner surface of the terminal binding member, A power tool having a power tool battery is provided.

여기서, 상기 단자의 내면은 외면보다 상대적으로 전도성이 높은 재질로 형성될 수 있다. Here, the inner surface of the terminal may be formed of a material having relatively higher conductivity than the outer surface.

그리고, 상기 단자는 구리 재질로 형성될 수 있다. The terminals may be formed of copper.

또한, 상기 내면은 연질 구리로 형성되고, 상기 외면은 1/2 연질 구리로 형성될 수 있다. Further, the inner surface may be formed of soft copper, and the outer surface may be formed of 1/2 soft copper.

본 발명은 배터리팩에 구비되어 전동공구의 단자결속부재와 결합되는 단자의 외면을 내면보다 상대적으로 강성이 강한 재질로 형성함으로써 단자의 변형을 억제하여 단락 현상을 방지할 수 있는 효과가 있다. According to the present invention, an outer surface of a terminal of a battery pack, which is coupled to a terminal connecting member of a power tool, is made of a material having relatively higher rigidity than an inner surface of the terminal, thereby preventing deformation of the terminal.

그리고, 단자의 내면은 전도성이 높은 재질로 형성하여 전동공구를 사용중에 단자 발열온도를 낮추고 에너지의 손실을 줄여서 배터리의 사용시간을 증대시킬 수 있는 효과가 있다. In addition, the inner surface of the terminal is formed of a highly conductive material, so that the terminal heating temperature is lowered during use of the power tool and the energy loss is reduced, thereby increasing the use time of the battery.

도 1은 종래의 전동공구용 배터리를 분해하여 도시한 분해사시도이고,
도 2는 본 발명의 일 실시예에 따른 전동공구용 배터리의 구조를 분해하여 도시한 분해사시도이며,
도 3은 도 2의 전동공구용 배터리에 구비된 단자를 확대하여 도시한 확대사시도이다. FIG. 1 is an exploded perspective view of a conventional battery for a power tool,
FIG. 2 is an exploded perspective view of a battery for a power tool according to an embodiment of the present invention,
FIG. 3 is an enlarged perspective view of a terminal provided in the battery for a power tool of FIG. 2; FIG.

이하, 첨부도면을 참조하여 본 발명의 실시예에 관하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 일 실시예에 따른 전동공구용 배터리의 구조를 분해하여 도시한 분해사시도이며, 도 3은 도 2의 전동공구용 배터리에 구비된 단자를 확대하여 도시한 확대사시도이다. FIG. 2 is an exploded perspective view of a battery for a power tool according to an embodiment of the present invention, and FIG. 3 is an enlarged perspective view illustrating an enlarged terminal provided in the battery for the power tool of FIG.

이들 도면에 도시한 바와 같이, 본 발명에 의한 이종재질로 형성된 단자를 구비한 전동공구 배터리를 구비한 전동공구는, 하부커버(100)와; 상기 하부커버(100)와 체결되어 내부에 일정한 수용공간(110)을 형성하는 상부커버(200)와; 상기 수용공간(110)에 수용되어 전동공구 측으로 전원을 공급하는 배터리셀(300)과; 상기 배터리셀(300)에서 상기 전동공구 측으로 공급되는 전원을 전기적으로 제어하며 상기 배터리셀(300)의 상면에 안착되는 피씨비(400)를 포함한 전동공구 배터리로서, 상기 전동공구 측으로 전원을 공급하도록 상기 피씨비(400)의 상면에는 행을 이루도록 복수로 설치되어 상기 전동공구에 구비된 단자결속부재와 결속되며 상기 단자결속부재와 접촉되는 내면(421)보다 상기 내면(421)을 감싸는 외면(422)은 상대적으로 강성이 높은 재질로 형성된 단자(420)가 구비된 것을 특징으로 한다. As shown in these drawings, a power tool having a power tool battery with terminals formed of different materials according to the present invention includes a lower cover 100; An upper cover 200 fastened to the lower cover 100 to form a predetermined accommodation space 110 therein; A battery cell 300 accommodated in the accommodation space 110 and supplying power to the power tool side; A power tool battery (400) electrically controlling the power supplied from the battery cell (300) to the power tool side and having a PCB (400) placed on the upper surface of the battery cell (300) The outer surface 422 of the PCB 400, which is provided in a plurality of rows so as to form a row and is surrounded by the terminal binding member provided in the power tool and surrounds the inner surface 421 than the inner surface 421 contacting the terminal binding member, And a terminal 420 formed of a material having relatively high rigidity is provided.

하부커버(100)는 전동공구를 사용하지 않고 바닥에 세워 놓을 경우에 그 하면이 지면과 접촉되는 부재로서 상면이 개구 형성되어 있으며, 상부커버(200)와 결합시에 배터리셀(300)을 수용할 수 있는 수용공간(110)을 형성하기 위하여 오목하게 형성되어 있다. The lower cover 100 is a member that is in contact with the ground when the bottom cover 100 is placed on a floor without using a power tool and has an upper surface opened to receive the battery cell 300 when engaged with the upper cover 200 And is formed to be recessed in order to form a receiving space 110 that can be used.

하부커버(100)의 내측 저부면에는 베터리셀(300)의 고정을 위하여 굴곡지게 형성된 복수의 받침부재(120)가 형성되어 있으며, 저부면의 둘레에는 상부커버(200)와의 결합을 위하여 볼트가 체결되는 볼트공이 형성된 체결부재(130)가 돌출 형성되어 있다. A plurality of support members 120 formed to be bent to fix the battery cell 300 are formed on an inner bottom surface of the lower cover 100. Bolts are formed around the bottom surface of the support member 120 for coupling with the upper cover 200 A fastening member 130 formed with a bolt hole to be fastened is protruded.

상부커버(200)는 하부커버(100)의 상면에 체결되어 내부에 형성되는 수용공간(110)을 외부와 차폐시킴으로써 배터리셀(300)이 외부로 노출되지 않도록 하며, 수용공간(110)을 형성할 수 있도록 상측으로 볼록하게 형성되어 있다. The upper cover 200 is coupled to the upper surface of the lower cover 100 so that the battery cell 300 is not exposed to the outside by shielding the receiving space 110 formed therein from the outside, And is formed so as to be convex upward.

도면에는 도시되지 않았지면 상부커버(200)의 내측 둘레에는 체결부재(130)와 체결이 이루어지는 복수의 결합부재가 상부커버(200)의 하측을 향하여 돌출되게 형성되어 있다. A plurality of engaging members, which are fastened to the fastening member 130, are formed on the inner circumference of the upper cover 200 so as to protrude toward the lower side of the upper cover 200, if not shown in the figure.

그리고, 상부커버(200)의 상면 중앙 영역에는 피씨비(400)에 구비된 복수의 단자(440)가 외부로 노출되는 노출공(210)이 관통 형성됨으로써 전동공구의 충전이 이루어지도록 할 수 있다. A plurality of terminals 440 provided on the PCB 400 are exposed through the exposed holes 210 in a central region of the upper surface of the upper cover 200 to fill the power tool.

배터리셀(300)은 하부커버(100)와 상부커버(200)의 결합에 의하여 형성되는 수용공간(110)에 수용되어 전동공구 측으로 전원을 공급하는 역할을 하는 부재로서, 그 외면에는 별도의 셀홀더(310)에 의하여 외면이 감싸도록 형성되어 있다. The battery cell 300 is housed in a receiving space 110 formed by the combination of the lower cover 100 and the upper cover 200 and serves to supply power to the power tool side, And is formed so as to surround the outer surface by the holder 310.

배터리셀(300)은 원통 형상으로 형성된 하나의 배터리가 요구되는 전압과 전류를 형성하여 전동공구 측으로 공급할 수 있도록 복수로 연결되어 구비되는데, 본 실시예에서는 4개의 배터리가 연결되어 있다. The battery cell 300 includes a plurality of batteries connected in a cylindrical shape so that one battery can supply required voltage and current to the power tool side. In this embodiment, four batteries are connected.

그리고, 복수의 배터리의 전원이 상호 연결된 상태를 유지할 수 있도록 배터리의 외면에는 각각의 배터리를 고정할 수 있도록 배터리의 외면을 따라 굴곡지게 형성된 별도의 셀홀더(310)가 구비되어 있다. A separate cell holder 310 is provided on the outer surface of the battery so that the plurality of batteries can be connected to each other so that the batteries can be connected to each other.

셀홀더(310)의 상면 일측에는 피씨비(400)의 고정을 위한 고정볼트(430)가 체결될 수 있는 별도의 체결부재(311)가 돌출 형성되어 있다. A separate fastening member 311 is formed on one side of the upper surface of the cell holder 310 so as to fasten the fixing bolts 430 for fixing the PCB 400.

피씨비(400)는 배터리셀(300)의 상면에 안착되어 배터리셀(300)에서 전동공구 측으로 공급되는 전원을 제어하는 부재로서, 그 표면에는 다양한 회로가 구비되어 있다. The PCB 400 is a member that is seated on the upper surface of the battery cell 300 and controls power supplied from the battery cell 300 to the power tool side, and various circuits are provided on the surface thereof.

그리고, 피씨비(400)의 상면 일측에는 전동공구 측으로 배터리셀(300)의 전원을 공급할 수 있는 복수의 단자(440)가 돌출되게 구비되어 있다. A plurality of terminals 440 protruding from the upper surface of the PCB 400 for supplying power to the battery cell 300 are provided on the power tool side.

그리고, 피씨비(400)의 판면 일측에는 볼트공(420)이 관통 형성되며, 피씨비(400)는 볼트공(420)을 관통하는 고정볼트(430)에 의하여 셀홀더(310)의 일측에 고정 결합될 수 있다. A bolt hole 420 is formed at one side of the plate 400 of the PCB 400. The PCB 400 is fixed to one side of the cell holder 310 by a fixing bolt 430 passing through the bolt hole 420, .

단자(440)는 전동공구 측으로 전원을 공급하도록 상기 피씨비(400)의 상면에는 행을 이루도록 복수로 설치되어 상기 전동공구에 구비된 단자결속부재와 결속되며 상기 단자결속부재와 접촉되는 내면(441)보다 내면(441)을 감싸는 외면(442)은 상대적으로 강성이 높은 재질로 형성되어 있다. The terminals 440 are provided on the upper surface of the PCB 400 so as to supply power to the power tool side. The terminals 440 are coupled to the terminal binding members provided in the power tool and have an inner surface 441, The outer surface 442 surrounding the inner surface 441 is formed of a material having a relatively high rigidity.

단자(440)의 내면보다 단자(440)의 내면(441)을 감싸는 외면(442)이 상대적으로 강성이 높은 재질로 형성됨으로써 전동공구 배터리를 전동공구에 반복적으로 착탈하더라도 단자가 변형됨을 억제하여 단자(440)가 헐거워짐을 방지함으로써 단락 현상을 방지할 수 있다. The outer surface 442 surrounding the inner surface 441 of the terminal 440 is formed of a material having relatively high rigidity so that the terminal is prevented from being deformed even if the power tool battery is repeatedly attached to or detached from the power tool, (440) is prevented from loosening, short-circuiting can be prevented.

그리고, 상기 단자(440)의 내면(441)은 외면(442)보다 상대적으로 전도성이 높은 재질로 형성되는 것이 효과적이다. It is effective that the inner surface 441 of the terminal 440 is formed of a material having relatively higher conductivity than the outer surface 442.

단자(440)의 내면(441)이 단자(440)의 내면을 감싸는 외면(442)보다 상대적으로 전도성이 높은 재질로 형성되어 있기 때문에 전동공구를 사용사에 단자(440)의 발열온도를 낮추고 어네지 손실을 줄임으로써 전동공구 배터리의 사용시간을 증대시킬 수 있는 효과가 있다. Since the inner surface 441 of the terminal 440 is formed of a material having relatively higher conductivity than the outer surface 442 surrounding the inner surface of the terminal 440, it is possible to reduce the heat generation temperature of the terminal 440 to the use of the power tool, The use of the electric tool battery can be increased by reducing the nose loss.

전도성이 높은 재질로 형성하기 위하여 단자(440)는 구리 재질로 형성되는 것이 바람직한데, 구리는 경화 정도에 따라 연질, 1/4 경질, 1/2 연질로 구분되기 때문에 단자(440)의 내면(441)은 상대적으로 전도성이 높은 연질 구리로 구성하고, 외면(442)은 상태적으로 강성이 높은 1/2 연질 구리로 구성되도록 하는 것이 바람직하다. Since the terminal 440 is formed of a copper material so as to be made of a material having high conductivity, copper is divided into soft, quarter hard and half soft according to degree of hardening. Therefore, the inner surface of the terminal 440 441 are made of soft copper having a relatively high conductivity and the outer surface 442 is made of a 1/2 soft copper having a high stiffness.

이상은 본 발명에 의해 구현될 수 있는 바람직한 실시예의 일부에 관하여 설명한 것에 불과하므로, 주지된 바와 같이 본 발명의 범위는 위의 실시예에 한정되어 해석되어서는 안 될 것이며, 위에서 설명된 본 발명의 기술적 사상과 그 근본을 함께 하는 기술적 사상은 모두 본 발명의 범위에 포함된다고 할 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

100 : 하부커버 110 : 수용공간
200 : 상부커버 300 : 배터리셀
400 : 피씨비 420 : 볼트공
430 : 고정볼트 440 : 단자
441 : 내면 442 : 외면100: lower cover 110: accommodation space
200: upper cover 300: battery cell
400: FPC 420: Bolt hole
430: fixing bolt 440: terminal
441: inner surface 442: outer surface

Claims (5)

하부커버(100)와;
상기 하부커버(100)와 체결되어 내부에 일정한 수용공간(110)을 형성하는 상부커버(200)와;
상기 수용공간(110)에 수용되어 전동공구 측으로 전원을 공급하는 배터리셀(300)과;
상기 배터리셀(300)에서 상기 전동공구 측으로 공급되는 전원을 전기적으로 제어하며 상기 배터리셀(300)의 상면에 안착되는 피씨비(400)를 포함한 전동공구 배터리로서,
상기 전동공구 측으로 전원을 공급하도록 상기 피씨비(400)의 상면에는 행을 이루도록 복수로 설치되어 상기 전동공구에 구비된 단자결속부재와 결속되며 상기 단자결속부재와 접촉되는 내면(441)보다 상기 내면(441)을 감싸는 외면(442)은 상대적으로 강성이 높은 재질로 형성된 단자(440)가 구비된 것을 특징으로 하는 이종재질로 형성된 단자를 구비한 전동공구 배터리.A lower cover 100;
An upper cover 200 fastened to the lower cover 100 to form a predetermined accommodation space 110 therein;
A battery cell 300 accommodated in the accommodation space 110 and supplying power to the power tool side;
A power tool battery electrically controlling the power supplied from the battery cell to the power tool side and including a PCB 400 mounted on the upper surface of the battery cell 300,
And a plurality of electric wires are provided on the upper surface of the PCB 400 to supply electric power to the power tool side so as to be connected to the terminal binding members provided in the power tool, 441) is provided with a terminal (440) made of a material having a relatively high rigidity. 제1항에 있어서,
상기 단자(440)의 내면(441)은 외면(442)보다 상대적으로 전도성이 높은 재질로 형성된 것을 특징으로 하는 이종재질로 형성된 단자를 구비한 전동공구 배터리.The method according to claim 1,
Wherein the inner surface (441) of the terminal (440) is formed of a material having relatively higher conductivity than the outer surface (442). 제2항에 있어서,
상기 단자(440)는 구리 재질로 형성된 것을 특징으로 하는 이종재질로 형성된 단자를 구비한 전동공구 배터리.3. The method of claim 2,
Wherein the terminal (440) is formed of a copper material. 제3항에 있어서,
상기 내면(441)은 연질 구리로 형성되고, 상기 외면(442)은 1/2 연질 구리로 형성된 것을 특징으로 하는 이종재질로 형성된 단자를 구비한 전동공구 배터리.The method of claim 3,
Wherein the inner surface (441) is formed of soft copper and the outer surface (442) is formed of soft copper. 제2항에 있어서,
상기 단자의 내면(441)은 구리재질로 형성되고, 상기 단자의 외면(442)은 구리재질보다 상대적으로 강성이 높은



3. The method of claim 2,
The inner surface 441 of the terminal is formed of a copper material, and the outer surface 442 of the terminal is relatively rigid



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CN113661606A (en) * 2019-08-27 2021-11-16 株式会社Lg新能源 Connector, battery management unit and battery pack
EP4331834A1 (en) 2022-08-29 2024-03-06 CS-Tech Co., Ltd. Copper-mild steel-copper (cmc) metal material for electrical contact terminal for replacing brass

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JP2015509258A (en) * 2011-12-30 2015-03-26 株式会社マキタ Battery pack for handheld power tools
KR20150058808A (en) * 2013-11-21 2015-05-29 삼성에스디아이 주식회사 Battery case
KR20160016363A (en) * 2014-08-05 2016-02-15 주식회사 메가테크 Connecting member and battery module comprising the same
KR20160117756A (en) * 2015-03-31 2016-10-11 계양전기 주식회사 Battery of electric tool

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Publication number Priority date Publication date Assignee Title
JP2015509258A (en) * 2011-12-30 2015-03-26 株式会社マキタ Battery pack for handheld power tools
KR20150058808A (en) * 2013-11-21 2015-05-29 삼성에스디아이 주식회사 Battery case
KR20160016363A (en) * 2014-08-05 2016-02-15 주식회사 메가테크 Connecting member and battery module comprising the same
KR20160117756A (en) * 2015-03-31 2016-10-11 계양전기 주식회사 Battery of electric tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113661606A (en) * 2019-08-27 2021-11-16 株式会社Lg新能源 Connector, battery management unit and battery pack
EP4331834A1 (en) 2022-08-29 2024-03-06 CS-Tech Co., Ltd. Copper-mild steel-copper (cmc) metal material for electrical contact terminal for replacing brass

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