WO2024099189A1 - 电池包及充电组合 - Google Patents

电池包及充电组合 Download PDF

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Publication number
WO2024099189A1
WO2024099189A1 PCT/CN2023/128646 CN2023128646W WO2024099189A1 WO 2024099189 A1 WO2024099189 A1 WO 2024099189A1 CN 2023128646 W CN2023128646 W CN 2023128646W WO 2024099189 A1 WO2024099189 A1 WO 2024099189A1
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WO
WIPO (PCT)
Prior art keywords
battery pack
electrode assembly
battery cell
battery
pack according
Prior art date
Application number
PCT/CN2023/128646
Other languages
English (en)
French (fr)
Inventor
杨德中
宋相君
董志军
Original Assignee
南京泉峰科技有限公司
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Filing date
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Application filed by 南京泉峰科技有限公司 filed Critical 南京泉峰科技有限公司
Publication of WO2024099189A1 publication Critical patent/WO2024099189A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/183Sealing members
    • H01M50/186Sealing members characterised by the disposition of the sealing members
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/584Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present application relates to the technical field of battery packs, and in particular to a battery pack and a charging assembly for powering an electric tool.
  • the power tools in the related art are generally powered by external AC power through wires, or by built-in battery packs. Compared with external AC power through wires, battery packs are portable, and the range of movement is not limited by the length of the wires. Therefore, most power tools are powered by battery packs. There are multiple battery cells arranged in the battery pack. Since the positive and negative electrodes of the battery cells are relatively close, when there is moisture or water between the two, electrical conductivity will occur, and then a hydrolysis reaction will occur and generate heat. The accumulation of heat will cause the temperature of the battery cell to rise.
  • One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a battery pack with good insulation between the positive electrode and the negative electrode, strong anti-corrosion ability and high safety performance.
  • the battery cell unit includes a positive electrode assembly and a negative electrode assembly and a safety device electrically connected to the positive electrode assembly; the safety device can disconnect the electrical connection with the positive electrode assembly when the battery cell unit is abnormal.
  • the charged surface includes at least one of a surface of a positive electrode assembly, a surface of a negative electrode assembly, and a surface of a safety device.
  • the surfactant includes a hard film rust preventive oil.
  • the hard film rust preventive oil includes sodium petroleum sulfonate or barium dinonylnaphthalene sulfonate.
  • the battery cell is configured to be immersed in a surfactant so that the surfactant can adhere to the charged surface.
  • the battery cell is configured to be processed by vapor deposition to allow the surfactant to attach to the charged surface.
  • the battery cell unit further includes a sealing ring, at least a portion of which is arranged between the positive electrode assembly and the negative electrode assembly.
  • the sealing ring is formed or connected with a partition, and the partition is connected to at least the positive electrode assembly and the negative electrode assembly.
  • the partition member includes at least one of hard film anti-rust oil, insulating waterproof paint, single-component transparent silicone or rubber.
  • the partition is capable of reversible elastic deformation.
  • the partition piece and the sealing ring are integrally formed.
  • the battery cell unit is a cylindrical battery cell, and the nominal voltage of the battery cell unit is less than or equal to 4.2V.
  • the battery pack is removably mounted to the power tool.
  • the battery pack includes a lithium chemistry battery, a nickel-cadmium battery, or a nickel-metal hydride battery.
  • a charging combination includes a charger and a battery pack that can be detachably mounted on the charger to obtain electrical energy, wherein the battery pack is configured to be detachably connected to an electric tool to provide electrical energy to the electric tool; wherein the battery pack includes: a shell; a battery cell assembly, which is arranged in the shell, and the battery cell assembly includes at least one battery cell unit; the battery cell unit includes at least one charged surface, and the charged surface includes a surfactant.
  • the partition member includes at least one of hard film anti-rust oil, insulating waterproof paint, single-component transparent silicone or rubber.
  • the partition is capable of reversible elastic deformation.
  • the partition piece and the sealing ring are integrally formed.
  • FIG1 is a structural perspective view of an electric tool according to an embodiment of the present application.
  • FIG. 2 is a structural perspective view of a charging assembly according to an embodiment of the present application.
  • FIG3 is a structural perspective view of a battery pack according to an embodiment of the present application.
  • FIG4 is an exploded view of the structure of the battery pack in FIG3 ;
  • FIG5 is a structural perspective view of the battery cell unit in FIG4 ;
  • FIG6 is an exploded view of the structure of the battery cell unit in FIG5 ;
  • FIG7 is a partial cross-sectional view of the battery cell unit in FIG5 ;
  • FIG8 is a partial cross-sectional view of a battery cell unit according to an embodiment of the present application.
  • FIG9 is a partial cross-sectional view of the battery cell unit in FIG8 ;
  • FIG10 is a partial cross-sectional view of a battery cell unit according to another embodiment of the present application.
  • FIG11 is a partial cross-sectional view of the battery cell unit in FIG10 ;
  • FIG12 is a partial cross-sectional view of a battery cell unit according to another embodiment of the present application.
  • FIG13 is a partial cross-sectional view of a battery cell unit according to another embodiment of the present application.
  • FIG. 14 is a schematic diagram of the processing of immersing a battery cell unit in a selected surfactant in one embodiment of the present application.
  • the term "and/or” is a description of the association relationship between related objects, indicating that three relationships can exist.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this application generally indicates that the related objects before and after are in an "and/or” relationship.
  • connection may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation.
  • direct connection refers to two parts or components being connected together without the need for an intermediate piece
  • indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece.
  • connect and “couple” are not limited to physical or mechanical connection or coupling, and may include electrical connection or coupling.
  • relative terms e.g., "about,” “approximately,” “substantially,” etc.
  • the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values that do not use relative terms should also be disclosed as specific values with tolerances.
  • substantially may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).
  • the function performed by a component can be performed by one component, multiple components, one part, or multiple parts.
  • the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.
  • controller In this application, the terms “controller”, “processor”, “central processing unit”, “CPU”, and “MCU” are interchangeable. When a unit “controller”, “processor”, “central processing unit”, “CPU”, or “MCU” is used to perform a specific function, unless otherwise specified, these functions can be performed by a single unit or multiple units.
  • the terms “device”, “module” or “unit” may be implemented in the form of hardware or software to achieve specific functions.
  • the terms “calculate”, “judge”, “control”, “determine”, “identify”, etc. refer to the operation of a computer system or similar electronic computing device (e.g., controller, processor, etc.) and process.
  • FIG1 shows a specific embodiment of the electric tool 10 in the present application, specifically an electric drill, which can at least provide torque to assist the screw in driving into the workpiece, and can provide impact force to impact the operation to meet the different usage requirements of users.
  • the technical solution in the present application can be applied to handheld electric tools such as electric drills, electric wrenches, electric screwdrivers, electric hammer drills, electric circular saws, sanders, table-type electric tools such as table saws, and outdoor tools such as lawn mowers, grass trimmers, electric scissors, pruning machines, and electric saws.
  • the following embodiments are some of the embodiments in the present application, but not all of them.
  • the power tool 10 includes a tool body 200 and a battery pack 100 for providing power to the tool body 200.
  • the battery pack 100 is detachably connected to the tool body 200 to provide power to the power tool 10.
  • the battery pack 100 is built into the tool body 200 to provide power to the power tool 10.
  • the battery pack 100 is a rechargeable lithium chemical battery, such as a lithium-ion battery.
  • the battery pack 100 may be a cylindrical lithium-ion battery or a soft-pack battery.
  • the rechargeable battery pack 100 may also be configured as other lithium chemical batteries with lithium as the matrix, or rechargeable batteries with other chemical matrices such as nickel-cadmium and nickel-metal hydride.
  • the battery pack 100 may be, but is not limited to, square, cylindrical, tower-shaped or other shapes.
  • Fig. 2 shows a specific embodiment of the present application as a charging assembly 20.
  • the charging assembly 20 includes a battery pack 100 and a charger 300 for charging the battery pack 100.
  • the battery pack 100 is detachably connected to the charger 300 to obtain and store electrical energy from the charger 300.
  • the battery pack 100 includes a housing 110, a cell assembly 120 and a heat absorber 130, and a first limit frame 140 and a second limit frame 150 for fixing the cell assembly 120.
  • the housing 110 forms a receiving cavity, and the cell assembly 120 and the heat absorber 130 are both arranged in the receiving cavity.
  • the housing 110 includes an upper housing 111 and a lower housing 112 for the above-mentioned receiving cavity.
  • the heat absorber 130 is in thermal contact with the cell assembly 120 to absorb the heat generated by the cell assembly 120 during the charging and discharging process of the battery pack 100.
  • the cell assembly 120 includes at least one cell unit 12 for storing electrical energy.
  • the number of cell units 12 depends on the different rated nominal values of the battery pack 100.
  • Battery packs 100 with different nominal values can be realized by connecting a plurality of rechargeable cell units 12 in series.
  • the nominal voltage of the cell unit 12 is less than or equal to 4.2V.
  • the battery cell unit 12 includes a positive electrode assembly 121 and a negative electrode assembly 122, and a safety device 123 electrically connected to the positive electrode assembly 121.
  • the safety device 123 can disconnect the electrical connection with the positive electrode assembly 121 when the battery cell unit 12 is abnormal.
  • the battery cell unit 12 also includes a sealing ring 124, an insulating sheet 125, and an insulating skin 126 wrapped around the outside of the negative electrode assembly 122.
  • the sealing ring 124 is disposed between the positive electrode assembly 121 and the negative electrode assembly 122 to prevent a short circuit between the positive electrode assembly 121 and the negative electrode assembly 122.
  • FIG. A in 7 When the environment in which the battery cell unit 12 is located is relatively humid or water vapor enters, as shown in FIG. A in 7 is likely to cause a short circuit between the positive electrode assembly 121 and the negative electrode assembly 122. It can be understood that when the performance of the insulating material is reduced, due to external factors such as weather, such as high air humidity, continuous cloudy and rainy seasons, and humid environments, the charged metal parts and the insulating material produce a phenomenon of arcs crawling along the outer skin like water lines, that is, creepage. When a short circuit occurs between the positive electrode assembly 121 and the negative electrode assembly 122 of the battery cell unit 12 due to creepage, it will affect the normal use of the battery and even bring safety hazards.
  • a sealing ring is provided in the present application to form or connect a partition, and the partition is connected to at least the positive electrode assembly and the negative electrode assembly to isolate the air communication path between the positive electrode assembly and the negative electrode assembly. Since the partition is made of a material with good insulation, the insulation between the positive and negative electrodes is improved while increasing the creepage distance between the positive and negative electrodes.
  • the sealing ring 124 is formed or connected with a partition 124a, and the partition 124a abuts against the insulating sheet 125, thereby completely isolating the positive electrode assembly 121 and the negative electrode assembly 122, so that there is no air communication path between the two.
  • the partition 124a is integrally formed with the sealing ring.
  • a second sealing ring 124b is added in this solution. Specifically, the second sealing ring 124b is against the sealing ring 124 and is arranged between the insulating sheet 125 and the positive electrode assembly 121, and is used to completely isolate the positive electrode assembly 121 and the negative electrode assembly 122, thereby avoiding a short circuit between the positive electrode assembly 121 and the negative electrode assembly 122 of the battery cell unit 12.
  • the above-mentioned second sealing ring 124b can be understood as a partition.
  • the sealing ring 124 and the second sealing ring 124b are integrally formed.
  • the sealing ring 124 and the second sealing ring 124b are made of the same material, such as PBT.
  • the sealing ring made of PBT has good insulation, and also has good heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance.
  • those skilled in the art can also use different materials to make the sealing ring 124 and the second sealing ring 124b, such as polyurethane rubber.
  • the present embodiment is different from the above-mentioned embodiment in that, in the present embodiment, insulating paint 124c, such as hard film anti-rust oil and insulating waterproof paint, is sprayed on the surface of the positive electrode assembly 121, the surface of the sealing ring 124, and the surface of the negative electrode assembly 122.
  • insulating glue 124d may be coated on the surface of the positive electrode assembly 121, the surface of the sealing ring 124, and the surface of the negative electrode assembly 122.
  • the insulating glue 124d includes a single-component transparent silica gel. It should be understood that the above-mentioned insulating paint should be understood as a partition.
  • the battery cell 12 includes a charged surface to which a surfactant is attached.
  • the above-mentioned charged surface can be understood as a metal surface in the battery cell 12 that is exposed to the air.
  • the charged surface includes at least one of the surface of the positive electrode component 121, the surface of the negative electrode component 122, and the surface of the safety device.
  • the molecular structure of the surfactant has two properties: one end is a hydrophilic group and the other end is a hydrophobic group. When the surfactant is attached to the charged surface, the hydrophilic group is attached closer to the charged surface than the hydrophobic group.
  • the surfactant is a cationic surface
  • the surfactant includes a hard film anti-rust oil.
  • the surfactant includes sodium petroleum sulfonate.
  • the surfactant includes barium dinonylnaphthalene sulfonate. It should be noted that the above only introduces some surfactants by way of example, and those skilled in the art may also use other forms of surfactants to achieve the phenomenon of short circuit between the positive electrode assembly 121 and the negative electrode assembly 122 of the battery cell unit 12 in a humid environment.
  • the battery cell 12 is immersed in the selected surfactant a so that the surfactant can be fully attached to the charged surface.
  • the selected surfactant is attached to the charged surface of the battery cell by vapor deposition.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种设置为给电动工具供电的电池包及充电组合。电池包包括:壳体;设置在壳体内的电芯组件,电芯组件包括至少一个电芯单元;电芯单元包括至少一个带电表面,带电表面附着有表面活性剂。采用以上技术方案能够使得电池包的正极和负极之间的绝缘性好,防锈蚀能力强且安全性能高。

Description

电池包及充电组合
本申请要求在2022年11月07日提交中国专利局、申请号为202211381365.4的中国专利申请的优先权,要求在2023年10月25日提交中国专利局、申请号为202311399295.X的中国专利申请的优先权,要求在2023年10月25日提交中国专利局、申请号为202311399271.4的中国专利申请的优先权,以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池包技术领域,尤其涉及一种用于给电动工具供电的电池包及充电组合。
背景技术
相关技术中的电动工具一般通过电线外接市电供电,或者通过自带电池包供电。相较于通过电线外接市电,电池包具有便携性,且移动范围不受电线的长度的限制,因此大多数的电动工具均采用电池包供电。电池包内布置有多个电芯单元,由于电芯单元的正极和负极距离比较近,当两者之间有水气或水时会出现导电的现象,进而发生水解反应并产热,热量的聚集会使电芯温度上升。
本部分提供了与本申请相关的背景信息,这些背景信息不一定是相关技术。
发明内容
本申请的一个目的是解决或至少减轻上述问题的一部分或者全部。为此,本申请的一个目的在于提供一种电池包,该电池包的正极和负极之间的绝缘性好,防锈蚀能力强且安全性能高。
为了实现上述目标,本申请采用如下的技术方案:
一种设置为至少能给电动工具供电的电池包,包括:壳体;电芯组件,设置在壳体内,电芯组件包括至少一个电芯单元;其中,电芯单元包括至少一个带电表面,带电表面附着有表面活性剂。
在一些实施例中,电芯单元包括正极组件和负极组件以及与正极组件电连接的安全装置;安全装置能在电芯单元异常时与正极组件断开电连接。
在一些实施例中,带电表面包括正极组件的表面、负极组件的表面以及安全装置的表面中的至少一个。
在一些实施例中,表面活性剂包括硬膜防锈油。
在一些实施例中,硬膜防锈油包括石油磺酸钠或二壬基萘磺酸钡。
在一些实施例中,电芯单元被配置为浸泡在表面活性剂中,以使表面活性剂能够附着在带电表面上。
在一些实施例中,电芯单元被配置为采用气相沉积的加工方式,以使表面活性剂能够附着在带电表面上。
在一些实施例中,电芯单元还包括密封圈,密封圈的至少部分布置在正极组件和负极组件之间。
在一些实施例中,密封圈形成或连接有隔断件,隔断件至少与正极组件和负极组件连接。
在一些实施例中,隔断件包括硬膜防锈油、绝缘防水漆、单组分透明硅胶或弗橡胶中的至少一种材质。
在一些实施例中,隔断件能够发生可逆弹性形变。
在一些实施例中,隔断件与密封圈一体成型。
在一些实施例中,电芯单元为柱状电芯,电芯单元的标称电压小于或等于4.2V。
在一些实施例中,电池包可拆卸地安装至电动工具。
在一些实施例中,电池包包括锂化学电池、镍镉电池、镍氢电池。
一种充电组合,包括充电器和可拆卸地安装至充电器以获取电能的电池包,所述电池包设置为能与电动工具可拆卸连接以给所述电动工具提供电能;其中,电池包包括:壳体;电芯组件,设置在壳体内,电芯组件包括至少一个电芯单元;电芯单元包括至少一个带电表面,带电表面包括表面活性剂。
一种设置为至少能给电动工具供电的电池包,包括:壳体;电芯组件,设置在壳体内,电芯组件包括至少一个电芯单元;其中,电芯单元包括正极组件、负极组件以及至少部分设置在正极组件和负极组件之间的密封圈;密封圈形成或连接有隔断件,隔断件至少与正极组件和负极组件连接。
在一些实施例中,隔断件包括硬膜防锈油、绝缘防水漆、单组分透明硅胶或弗橡胶中的至少一种材质。
在一些实施例中,隔断件能够发生可逆弹性形变。
在一些实施例中,隔断件与密封圈一体成型。
附图说明
图1是本申请的一个实施例的电动工具的结构立体图;
图2是本申请的一个实施例的充电组合的结构立体图
图3是本申请的一个实施例的电池包的结构立体图;
图4是图3中的电池包的结构爆炸图;
图5是图4中的电芯单元的结构立体图;
图6是图5中的电芯单元的结构爆炸图;
图7是图5中的电芯单元的局部剖视图;
图8是本申请的一个实施例的电芯单元的局部剖视图;
图9是图8中的电芯单元的局部剖面图;
图10是本申请的另一种实施例的电芯单元的局部剖视图;
图11是图10中的电芯单元的局部剖面图;
图12是本申请的又一种实施例的电芯单元的局部剖面图;
图13是本申请的又一种实施例的电芯单元的局部剖面图;
图14是本申请的一个实施例中的电芯单元浸泡在选用的表面活性剂中的加工示意图。
具体实施方式
在详细解释本申请的任何实施方式之前,应当理解,本申请不限于其应用到以下描述中阐述的或以上附图中所示的结构细节和组件布置。
在本申请中,术语“包括”、“包含”、“具有”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
在本申请中,术语“和/或”,是一种描述关联对象的关联关系,表示可以存在三种关系。例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本申请中字符“/”,一般表示前后关联对象是一种“和/或”的关系。
本申请中,术语“连接”、“结合”、“耦合”、“安装”可以是直接连接、结合、耦合或安装,也可以是间接连接、结合、耦合或安装。其中,进行举例示范,直接连接指的是两个零件或组件之间不需设置中间件而连接在一起,间接连接指的是两个零件或组件分别与至少一个中间件连接,这两个零件或组件通过中间件实现连接。此外,“连接”和“耦合”不限于物理或机械连接或耦合,并且可以包括电连接或耦合。
在本申请中,本领域普通技术人员将理解,结合数量或条件使用的相对术语(例如,“约”,“大约”,“基本”等)为包括所述值并且具有上下文所指示的含义。例如,该相对术语至少包括与特定值的测量相关的误差程度,与特定值相关的由制造,组装,使用造成的公差等。这种术语也应被视为公开了由两个端点的绝对值限定的范围。相对术语可指代所指示的值的一定百分比(例如1%,5%,10%或更多)的加或减。未采用相对术语的数值,也应该被揭示为具有公差的特定值。此外,“基本”在表达相对的角度位置关系时(例如,基本平行,基本垂直),可指代在所指示的角度的基础上加或减一定度数(例如1度,5度,10度或更多)。
在本申请中,本领域普通技术人员将理解,由组件执行的功能可以为由一个组件,多个组件,一个零件,或多个零件执行。同样的,由零件执行的功能也可以由一个零件,一个组件,或多个零件组合来执行。
在本申请中,术语“上”、“下”、“左”、“右”、“前”、“后”等方位词是以附图所示的方位和位置关系来进行描述的,不应理解为对本申请实施例的限定。此外,在上下文中,还需要理解的是,当提到一个元件连接在另一个元件“上”或者“下”时,其不仅能够直接连接在另一个元件“上”或者“下”,也可以通过中间元件间接连接在另一个元件“上”或者“下”。还应当理解的,上侧、下侧、左侧、右侧、前侧、后侧等方位词不仅代表正方位,也可以理解为侧方位。例如,下方可以包括正下方、左下方、右下方、前下方以及后下方等。
在本申请中,术语“控制器”、“处理器”、“中央处理器”、“CPU”、“MCU”可以互换。在使用单元“控制器”、“处理器”、“中央处理器”、“CPU”、或“MCU”来执行特定功能,除非另有说明,否则这些功能则可以由单个上述单元或多个上述单元来执行。
在本申请中,术语“装置”、“模块”或“单元”为了实现特定的功能,它们可以通过硬件或软件的形式来实现。
在本申请中,术语“计算”、“判断”、“控制”、“确定”、“识别”等指的是计算机系统或类似电子计算设备(例如,控制器,处理器等)的操作 和过程。
图1示出了本申请中作为电动工具10的具体实施例,具体地为一种电钻,至少能提供扭力辅助螺钉打入工件,并且可以提供冲击力冲击作业,以满足用户不同的使用需求。实际上本申请中的技术方案可适用于电钻、电动扳手、电动螺丝批、电锤钻、电圆锯、砂光机等手持式电动工具,台锯等台型电动工具以及割草机、打草机、电剪刀、修枝机、电锯等户外工具。以下的实施例是本申请中的部分实施例,而不是全部的实施例。
以下结合附图和具体实施例对本申请作具体的介绍。
参见图1所示,电动工具10包括工具主体200和用于给工具主体200提供电能的电池包100。在一些实施例中,电池包100可拆卸地连接至工具主体200以为电动工具10提供电能。在一些实施例中,电池包100内置在工具主体200内以为电动工具10提供电能。在一些实施中,电池包100为可充电的锂化学电池,如锂离子电池,根据电动工具10使用场合的不同,电池包100可以为圆柱形锂离子电池或者软包电池。当然,可充电的电池包100也可以配置为其他以锂为基质的锂化学电池,或者镍镉、镍氢之类的其他化学基质的可充电电池。电池包100可以是但不限于方形、筒形、塔形或其他形状等。
图2示出了本申请中作为充电组合20的具体实施例。充电组合20包括电池包100和用于给电池包100充电的充电器300。电池包100可拆卸地连接至充电器300,以从充电器300获取并存储电能。
在一些实施例中,参见图3和图4所示,电池包100包括壳体110、电芯组件120和吸热体130以及用于固定电芯组件120的第一限位架140和第二限位架150。其中,壳体110形成容纳腔,电芯组件120和吸热体130均设置在容纳腔内。在一些实施例中,壳体110包括用于上述的容纳腔的上壳体111和下壳体112。吸热体130与电芯组件120热接触,以吸收电池包100在充放电过程中电芯组件120产生的热量。电芯组件120包括至少一个电芯单元12,用于存储电能。具体地,电芯单元12的数量取决于电池包100的不同额定标称值。不同标称值的电池包100可通过串联多个可充电的电芯单元12来实现。在一些实施例中,电芯单元12的标称电压小于或等于4.2V。
在一些实施例中,参见图5和图6所示,电芯单元12包括正极组件121和负极组件122以及与正极组件121电连接的安全装置123。安全装置123能在电芯单元12异常时与正极组件121断开电连接。在一些实施例中,电芯单元12还包括密封圈124以及绝缘片125和包裹在负极组件122外侧的绝缘皮126。具体地,密封圈124设置在正极组件121和负极组件122之间,用于避免正极组件121和负极组件122发生短路现象。当电芯单元12处于的环境较为潮湿或有水气进入时,在如图 7中的A处容易使得正极组件121和负极组件122之间产生短路。可以理解,在绝缘材料的性能降低时受天气等外界因素如空气湿度大,接连阴天霉雨季节,潮湿环境等使得带电金属部位与绝缘材料产生像水纹样电弧沿着外皮爬的现象,即爬电现象。当电芯单元12的正极组件121和负极组件122之间由于爬电现象而出现短路时,会影响电池的正常使用,甚至带来安全隐患。为了解决上述问题,本申请给出了一些可实施的技术方案,主要目的是为了避免正极组件121和负极组件122之间因爬电现象或遇水等原因而出现短路的故障。为了解决上述的问题,本申请中设置密封圈形成或连接有隔断件,隔断件至少与正极组件和负极组件连接,以隔断正极组件和负极组件之间的空气连通的路径。由于隔断件设置为具有较好绝缘性的材料,在增加正负极之间的爬电距离的同时,提高正负极之间的绝缘性。
在一些实施例中,参见图8和图9所示,密封圈124形成或连接有隔断件124a,隔断件124a与绝缘片125相抵,从而将正极组件121和负极组件122完全隔断开,以使得两者之间没有空气连通的路径。具体地,隔断件124a与密封圈一体成型。
在一些实施例中,参见图10和图11所示,与上述实施例不同的是,本方案中增加了第二密封圈124b。具体地,第二密封圈124b与密封圈124相抵并布置在绝缘片125和正极组件121之间,用于将正极组件121和负极组件122完全隔离开,从而避免电芯单元12的正极组件121和负极组件122之间短路。上述的第二密封圈124b即可以理解为隔断件。在一些实施例中,密封圈124和第二密封圈124b一体成型。在一些实施例中,密封圈124和第二密封圈124b采用相同的材质制成,例如PBT。用PBT制成的密封圈具有较好的绝缘性的同时,还具有较好的耐热性、抗氧化性、耐油性、耐腐蚀性和耐大气老化性。当然,本领域的技术人员也可以采用不同的材质制成密封圈124和第二密封圈124b,例如弗橡胶。
在一些实施例中,参见图12所示,本实施例中与上述实施例不同的是,本实施例中,在正极组件121的表面、密封圈124的表面、负极组件122的表面喷涂有绝缘漆124c,如硬膜防锈油、绝缘防水漆。当然,也可以如图13所示,在正极组件121的表面、密封圈124的表面、负极组件122的表面涂有绝缘胶124d。绝缘胶124d包括单组分透明硅胶。应该理解,上述的绝缘漆应当被理解为隔断件。
在一些实施例中,电芯单元12包括附着有表面活性剂的带电表面。上述的带电表面可以理解为电芯单元12中的暴露在空气中的金属表面。具体地,带电表面包括正极组件121的表面、负极组件122的表面以及安全装置的表面中的至少一个。具体而言,表面活性剂的分子结构具有两性:一端为亲水基团,另一端为疏水基团。当表面活性剂附着在带电表面时,其中的亲水基团相对于疏水基团而言更近地附着在带电表面。在一些实施例中,表面活性剂为阳离子表面 活性剂。在一些实施例中,表面活性剂包括硬膜防锈油。在一些实施例中,表面活性剂包括石油磺酸钠。在一些实施例中,表面活性剂包括二壬基萘磺酸钡。需要说明的是,上述只是示例性地介绍了一些表面活性剂,本领域的技术人员也可以采用其他形式的表面活性剂,以实现电芯单元12的正极组件121和负极组件122在潮湿的环境下出现短路的现象。
在一些实施例中,如图14所示,将电芯单元12浸泡在选用的表面活性剂a中,以使表面活性剂能够充分的附着在带电表面上。当然,在一些实施例中,采用气相沉积的加工方式将选用的表面活性剂附着在电芯单元的带电表面上。
以上显示和描述了本申请的基本原理、主要特征和优点。本行业的技术人员应该了解,上述实施例不以任何形式限制本申请,凡采用等同替换或等效变换的方式所获得的技术方案,均落在本申请的保护范围内。

Claims (20)

  1. 一种设置为至少能给电动工具供电的电池包,包括:
    壳体;
    电芯组件,设置在所述壳体内,所述电芯组件包括至少一个电芯单元;
    其中,
    所述电芯单元包括至少一个带电表面,所述带电表面包括表面活性剂。
  2. 根据权利要求1所述的电池包,其中,所述电芯单元包括正极组件和负极组件以及与所述正极组件电连接的安全装置;所述安全装置能在所述电芯单元异常时与所述正极组件断开电连接。
  3. 根据权利要求2所述的电池包,其中,所述带电表面包括所述正极组件的表面、所述负极组件的表面以及所述安全装置的表面中的至少一个。
  4. 根据权利要求1所述的电池包,其中,所述表面活性剂包括硬膜防锈油。
  5. 根据权利要求4所述的电池包,其中,所述硬膜防锈油包括石油磺酸钠或二壬基萘磺酸钡。
  6. 根据权利要求1所述的电池包,其中,所述电芯单元被配置为浸泡在所述表面活性剂中,以使所述表面活性剂能够附着在所述带电表面上。
  7. 根据权利要求1所述的电池包,其中,所述电芯单元被配置为采用气相沉积的加工方式,以使所述表面活性剂能够附着在所述带电表面上。
  8. 根据权利要求1所述的电池包,其中,所述电芯单元还包括密封圈,所述密封圈的至少部分布置在所述正极组件和所述负极组件之间。
  9. 根据权利要求8所述的电池包,其中,所述密封圈形成或连接有隔断件,所述隔断件至少与所述正极组件和所述负极组件连接,以隔断所述正极组件和所述负极组件之间的空气连通的路径。
  10. 根据权利要求9所述的电池包,其中,所述隔断件包括硬膜防锈油、绝缘防水漆、单组分透明硅胶或弗橡胶中的至少一种材质。
  11. 根据权利要求9所述的电池包,其中,所述隔断件能够发生可逆弹性形变。
  12. 根据权利要求9所述的电池包,其中,所述隔断件与所述密封圈一体成型。
  13. 根据权利要求1所述的电池包,其中,所述电芯单元为柱状电芯,所述电芯单元的标称电压小于或等于4.2V。
  14. 根据权利要求1所述的电池包,其中,所述电池包可拆卸地安装至所述电动工具。
  15. 根据权利要求1所述的电池包,其中,所述电池包包括锂化学电池、镍镉电池、镍氢电池。
  16. 一种充电组合,包括充电器和可拆卸地安装至所述充电器以获取电能的电池包,所述电池包设置为能与电动工具可拆卸连接以给所述电动工具提供电能;其中,所述电池包包括:
    壳体;
    电芯组件,设置在所述壳体内,所述电芯组件包括至少一个电芯单元;
    所述电芯单元包括至少一个带电表面,所述带电表面包括表面活性剂。
  17. 一种设置为至少能给电动工具供电的电池包,包括:
    壳体;
    电芯组件,设置在所述壳体内,所述电芯组件包括至少一个电芯单元;
    其中,
    所述电芯单元包括正极组件、负极组件以及至少部分设置在所述正极组件和所述负极组件之间的密封圈;
    所述密封圈形成或连接有隔断件,所述隔断件至少与所述正极组件和所述负极组件连接,以隔断所述正极组件和所述负极组件之间的空气连通的路径。
  18. 根据权利要求17所述的电池包,其中,所述隔断件包括硬膜防锈油、绝缘防水漆、单组分透明硅胶或弗橡胶中的至少一种材质。
  19. 根据权利要求17所述的电池包,其中,所述隔断件能够发生可逆弹性形变。
  20. 根据权利要求17所述的电池包,其中,所述隔断件与所述密封圈一体成型。
PCT/CN2023/128646 2022-11-07 2023-10-31 电池包及充电组合 WO2024099189A1 (zh)

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JPH10172612A (ja) * 1996-12-11 1998-06-26 Toray Ind Inc 電 池
US20060051663A1 (en) * 2004-09-03 2006-03-09 Matsushita Electric Industrial Co., Ltd** Lithium ion secondary battery
CN109244304A (zh) * 2018-10-23 2019-01-18 泰州瑞华新能源科技有限公司 一种电动车电池组
CN110391480A (zh) * 2019-08-12 2019-10-29 银隆新能源股份有限公司 一种柱型电池
CN112397683A (zh) * 2020-11-17 2021-02-23 辽宁九夷锂能股份有限公司 一种无极耳锂电池及其制备方法
CN215220765U (zh) * 2021-01-27 2021-12-17 自贡市泰威科技有限公司 耐高温的纽扣电池

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10172612A (ja) * 1996-12-11 1998-06-26 Toray Ind Inc 電 池
US20060051663A1 (en) * 2004-09-03 2006-03-09 Matsushita Electric Industrial Co., Ltd** Lithium ion secondary battery
CN109244304A (zh) * 2018-10-23 2019-01-18 泰州瑞华新能源科技有限公司 一种电动车电池组
CN110391480A (zh) * 2019-08-12 2019-10-29 银隆新能源股份有限公司 一种柱型电池
CN112397683A (zh) * 2020-11-17 2021-02-23 辽宁九夷锂能股份有限公司 一种无极耳锂电池及其制备方法
CN215220765U (zh) * 2021-01-27 2021-12-17 自贡市泰威科技有限公司 耐高温的纽扣电池

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