WO2016197565A1 - 一种带有充电指示灯的二次电化学电池封口体 - Google Patents

一种带有充电指示灯的二次电化学电池封口体 Download PDF

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Publication number
WO2016197565A1
WO2016197565A1 PCT/CN2015/096610 CN2015096610W WO2016197565A1 WO 2016197565 A1 WO2016197565 A1 WO 2016197565A1 CN 2015096610 W CN2015096610 W CN 2015096610W WO 2016197565 A1 WO2016197565 A1 WO 2016197565A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
board module
battery
charging
sealing body
Prior art date
Application number
PCT/CN2015/096610
Other languages
English (en)
French (fr)
Inventor
常海涛
陈进添
苏盛
叶永锋
余佑锋
徐小春
Original Assignee
福建南平南孚电池有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201510324116.5A external-priority patent/CN104993092B/zh
Priority claimed from CN201520406542.9U external-priority patent/CN204668385U/zh
Application filed by 福建南平南孚电池有限公司 filed Critical 福建南平南孚电池有限公司
Priority to ES15894820T priority Critical patent/ES2768826T3/es
Priority to JP2017562345A priority patent/JP6533310B2/ja
Priority to EP15894820.8A priority patent/EP3291335B1/en
Publication of WO2016197565A1 publication Critical patent/WO2016197565A1/zh
Priority to US15/672,795 priority patent/US20170338450A1/en

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Classifications

    • 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
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H02J7/0049—Detection of fully charged condition
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to a secondary battery, in particular to a secondary electrochemical battery sealing body with a charging indicator light.
  • secondary batteries also referred to as rechargeable batteries
  • Lithium ion secondary batteries are gradually being applied in the above fields due to their high energy, high power discharge, and environmental protection.
  • the normal operation of the rechargeable battery often needs to cooperate with other functional integrated circuit chips, and has achieved the desired working effect.
  • the rechargeable battery and the integrated circuit chip are separately packaged, and then connected together by the connection of the circuit board and the wires. In this way, there are many external components, many production processes, and high cost.
  • the rechargeable battery and the integrated circuit chip are bulky and have poor performance, which is disadvantageous for miniaturization or miniaturization.
  • the space occupied by each part of the lithium ion secondary battery is relatively fixed, wherein the inside of the polymer battery core includes a positive electrode pole piece, a separator film and a negative electrode pole piece, and is at the positive electrode pole
  • the sheet is sealed from the end of the separator with a specified height of the core, and the cell top seal occupies a certain height of the polymer cell, thereby reducing the effective space inside the polymer cell.
  • the space utilization rate of the polymer battery has a great relationship with the energy density and capacity of the lithium ion secondary battery.
  • the space utilization ratio of the polymer battery core is larger, and the energy density of the lithium ion secondary battery is The capacity is also large. Therefore, the conventional lithium ion secondary battery generally has a problem that the energy density and capacity of the lithium ion secondary battery are low due to the low space utilization ratio of the polymer battery.
  • the present invention provides a secondary electrochemical cell sealing body with a charging indicator for closing an opening of a battery case of the secondary electrochemical cell, wherein the sealing body comprises: a negative electrode a cap, a circuit board module and an insulating gasket, wherein the negative electrode cap is located at an outermost side of the battery sealing body, the circuit board module is located inside the negative electrode cap, and is connected to the negative electrode cap through a connecting member; A charging indicator light is disposed at an edge of the negative electrode cap; a shape of a connecting portion of the negative electrode cap and the circuit board module is a “C”-shaped annular structure, that is, an edge of the negative electrode cap has a notch, and the notch is a charging indicator light.
  • the light-passing opening has a height but does not exceed the height of the negative electrode cap for exposing the charging indicator light to a position corresponding to the position of the charging indicator on the circuit board module;
  • the insulating gasket is a a flexible and resilient annular insulating layer disposed in the gap between the battery case, the circuit board module and the negative electrode cap, one portion for pressing the fixed circuit board module and the other portion for Isolating the battery case and the negative electrode cap, the insulating gasket also completely covering the light-passing port of the charging indicator lamp, and sealing the material of the insulating gasket of the negative electrode cap, the battery case and the circuit board module to be transparent
  • the light guiding material can transmit the light emitted by the charging indicator light through the insulating gasket and make the entire insulating gasket transparent.
  • the charging indicator light has a color of at least one color.
  • the color of the charging indicator light is one color
  • one color is always bright when charging, and the light is off when charging is completed.
  • the color of the charging indicator is two colors, one color is always bright when charging, and the other color is always bright when charging is completed.
  • the charging indicator flashes quickly when a failure occurs during charging and cannot be normally charged.
  • the frequency of the flashing light of the charging indicator light gradually decreases during the three periods before, during, and after the charging is performed, and when the charging is completed, the charging indicator light is always on.
  • a solder connection is formed between the circuit board module and the negative electrode cap.
  • the circuit negative output end of the circuit board module is disposed at a connection between the negative electrode cap and the circuit board, so that the negative output is collinear with the circuit ground.
  • the portion of the insulating gasket that is in contact with the interior of the battery case has a circular arc shape for engaging with a circular arc structure of the battery case.
  • the sealing body is used to close the battery case of the secondary electrochemical cell
  • the battery further includes a battery core and a positive electrode cap, wherein the positive electrode cap is connected to the battery case to form a positive electrode of the secondary battery; the battery core is placed in the battery case, located at the Between the positive cap and the circuit board module.
  • the structure design of the secondary electrochemical battery sealing body fitting with the charging indicator lamp of the invention is ingenious and reasonable, and the charging indicator light is arranged on the circuit board of the electrochemical battery, and the insulating gasket of the negative electrode of the battery is matched, and the battery is charged.
  • the entire insulating gasket is made transparent, so that the charging light can be more easily seen.
  • Figure 1a is a cross-sectional, exploded view of a closure assembly for an electrochemical cell of the present invention.
  • Figure 1b is a perspective view of a closure body assembly for an electrochemical cell of the present invention.
  • Figure 1c is a top plan view of a closure assembly for an electrochemical cell of the present invention.
  • Fig. 2a schematically shows a schematic structural view of an electrochemical cell of the invention.
  • Figure 2b is an exploded perspective view of the electrochemical cell of the present invention.
  • Figure 2c is a cross-sectional view of Figure 1a taken along the line A-A.
  • the present invention provides a secondary electrochemical cell sealing body with a charging indicator.
  • 1a is a cross-sectional exploded view of a secondary electrochemical cell sealing body 100 with a charging indicator of the present invention.
  • Figure 1b is a perspective view of a secondary electrochemical cell sealing body fitting 100 with a charging indicator lamp of the present invention.
  • Body map As shown in FIG. 1a, the sealing body fitting 100 includes a negative electrode cap 101, an insulating gasket 102, and a circuit board module 103.
  • the negative electrode cap 101 is located at the outermost side of the battery sealing body 100, and the circuit board module 103 is located inside the negative electrode cap 101, and is connected to the negative electrode cap 101 through a connecting member.
  • the insulating gasket 102 is disposed in the gap between the circuit board module 103 and the negative electrode cap 101.
  • a charging indicator lamp 105 is disposed on the circuit board module 103 corresponding to the edge of the negative electrode cap 101.
  • the charging indicator light 105 is an indicator light of at least one color. If the color of the charging indicator 105 is a color, one color is always bright when charging, and the light is off when charging is completed; if the color of the charging indicator 105 is two colors, one color is always bright when charging is performed. The other color is always on when charging is complete.
  • the charging indicator flashes quickly, for example, 5 times a second.
  • medium such as 30%-60%), and after (such as 60%-99%
  • the charging indicator light gradually decreases in frequency, when the charging is completed.
  • the charging indicator is always on.
  • the charging indicator 105 flashes 3 times in 1 second.
  • the charging indicator 105 flashes once every 2 seconds, and the power reaches 60.
  • the frequency is -99%, the charging indicator 105 flashes once every 1 second, and when the charging is full, the charging indicator 105 is always on.
  • the shape of the connection portion between the negative electrode cap 101 and the circuit board module 103 is a "C"-type annular structure, that is, the edge of the negative electrode cap has a notch 104, and the notch 104 is a light-passing port of the charging indicator lamp 105, and the notch 104 has a certain height. However, the height of the negative cap is not exceeded to expose the charging indicator 105, and its position corresponds to the position of the charging indicator 105 on the circuit board module 103.
  • the insulating gasket 102 is a flexible and elastic annular insulating layer layer, which can completely cover the light passing port of the charging indicator lamp 105 (as shown in FIG. 1c).
  • the material of the insulating gasket 102 is a transparent light guiding material, which can enable the charging indicator lamp 105. The emitted light passes through the insulating gasket and causes the entire insulating gasket to transmit light.
  • the electrochemical cell 100 includes a battery case 201, a battery cell 202 disposed in the battery case 201, a negative electrode cap 203, and a space between the battery core 202 and the negative electrode cap 203.
  • the battery core 202 is jacketed with a battery case 201 and is located at the positive electrode cap 205. Between the board module 204 and the board.
  • the battery case 201 is a cylindrical or rectangular steel case for outputting a positive electrode and fixing the circuit board module 204.
  • the positive electrode cap 205 is formed in a right-handed structure with the battery case 201 in a right-handed manner to constitute a positive electrode of the secondary battery 200.
  • the circuit board module 204 is at least one printed circuit board (PCB) having a first side and a second side, wherein the first side is directed relative to the electrochemical cell 200 to the negative cap 203 and the second side is opposite the electrochemical Battery 200 is directed to cell 202.
  • the PCB is a circuit board on which a wiring pattern is printed, and has a size substantially corresponding to the inner diameter of the casing of the battery 200.
  • a plurality of printed conductors and components are disposed on a first side or a second side of the circuit board module 204.
  • the circuit board module 204 is adjacent to the negative electrode cap 203 side of the battery 200 between the battery core 202 and the negative electrode cap 203.
  • the circuit board module 204 is provided with a connecting member for fixing the negative electrode cap 203 to the circuit board module 204.
  • the negative electrode cap 203 may be soldered to the circuit board module 204, or may be fixed by snapping or the like.
  • the circuit negative output terminal of the circuit board module 204 is disposed at a junction of the negative electrode cap 203 and the circuit board such that the negative output is collinear with the circuit ground.
  • Electrode connection lines 208a and 208b are disposed between the circuit board module 204 and the battery core 202, respectively, and the positive and negative electrodes of the battery are respectively led out, wherein 208a is a positive connection line and 208b is a negative connection line.
  • Figure 2c is a cross-sectional view of Figure 2a taken along line A-A.
  • An insulating gasket 206 is disposed between the circuit board module 204 and the external battery case 201 between the negative electrode cap 203 and the battery case 201.
  • the insulating gasket 206 is a flexible and elastic annular insulating mat layer, and the insulating gasket 206 can function to isolate the battery case 201 as the first electrode and the negative electrode cap 203 as the second electrode, and due to the elasticity of the insulating gasket 206 The function can squeeze and fix the circuit board module 204 to seal the gap between the battery case 201 and the negative electrode cap 203. Specifically, as shown in FIG. 2c, a portion of the insulating gasket 206 is used to press the fixed circuit board module 204 between the twisted wire 207 and the battery case 201, and another portion is used to isolate the battery case 201 and the The negative electrode cap 203 is described.
  • the battery case 201 On the outer surface of the battery case 201, there is an inward annular recess corresponding to the position between the battery core 202 and the printed circuit board 206, which is a twist line 207.
  • the battery core 202 is placed in the battery case 201 between the structure of the positive electrode cap 205 and the twist line 207.
  • the arrangement of the insulating gasket 206 and the twist wire 207 is such that the circuit board module 204 is fixed between the annular recess of the battery case 201 and the bottom of the battery case 201, so that the connection of the battery case 201 and the negative electrode cap 203 is not required. Want any welding.
  • the structure of the twist line 207 is used to position the circuit board module 204.
  • the diameter of the circuit board module 204 is set to be between the inner diameter of the annular recess formed by the twist line 207 and the inner diameter of the battery case 201.
  • the battery core 202 is first placed in the battery case 201, and then the circuit board module 204 is assembled into the battery case 201.
  • the size of the circuit board module 204 can be caught on the structure of the twisted wire 207 to avoid The contact of the battery cell 202, and then the battery case 201 and the negative electrode cap 203 are separated by the insulating gasket 206, completing the assembly of the battery 200.
  • the above structure allows the circuit board module 204 to form a closed space inside the battery case 201 for accommodating the battery cells 202 by means of the structure of the twist line 207, so that the volume of the battery core 202 can be increased, thereby increasing the capacity of the secondary battery.
  • the battery cell 202 is a hermetic structure, and operates by connecting the positive and negative electrodes from the inside of the battery core 202 to the positive and negative terminals of the corresponding battery.
  • the above-mentioned twist line 207 has a recessed depth of 0.2 to 1.2 mm with respect to the surface of the battery case 201.
  • the structure design of the secondary electrochemical battery sealing body fitting with the charging indicator lamp of the invention is ingenious and reasonable, and the charging indicator light is arranged on the circuit board of the electrochemical battery, and the insulating gasket of the negative electrode of the battery is matched, and the battery is charged.
  • the entire insulating gasket is made transparent, so that the charging light can be more easily seen.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

本发明提供了一种带有充电指示灯的二次电化学电池封口体，包括：负极帽、电路板模块和绝缘垫圈，负极帽位于电池封口体的最外侧，电路板模块位于负极帽内侧，与负极帽通过连接件连接；电路板模块上与负极帽的边缘对应处设置有充电指示灯；负极帽与电路板模块连接部位的形状为"C"型环状结构，即负极帽的边缘具有缺口，缺口为充电指示灯的通光口，缺口具有一定的高度但不超过负极帽的高度，位置对应电路板模块上的充电指示灯的位置；绝缘垫圈为一柔性且弹性环形绝缘垫层，布置于电池壳体、电路板模块与负极帽的空隙中，绝缘垫圈还完全覆盖住充电指示灯的通光口，密封负极帽、电池壳体及电路板模块，材料为透明导光材料。

Description

一种带有充电指示灯的二次电化学电池封口体 技术领域
本发明涉及一种二次电池，具体涉及一种带有充电指示灯的二次电化学电池封口体。
背景技术
近年来，二次电池(也称为充电电池)已经广泛应用于各种便携式电气设备和电子设备中，例如玩具、手持设备等，这对二次电池储能能量提出越来越高的要求。锂离子二次电池由于具有能量高、可以高功率放电、环保等优点，因而正在逐渐应用在以上领域。
充电电池的正常工作经常需要与其他功能的集成电路芯片配合，已达到理想的工作效果。通常充电电池与集成电路芯片分别进行封装，然后再通过电路板和导线的连接，结合在一起使用。这样外围元件多，生产工序多、成本高，充电电池与集成电路芯片体积大，性能较差，不利于小型化或微型化。
在进行锂离子二次电池封装时，锂离子二次电池各部分所占的空间都较为固定，其中，该聚合物电芯内部则包括正极极片、隔离膜和负极极片，且在正极极片背离隔离膜的一端具有指定高度的电芯顶封进行封装，由于电芯顶封占据了该聚合物电芯的一定高度，从而减少了该聚合物电芯内部的有效空间。而聚合物电芯的空间利用率与锂离子二次电池的能量密度和容量有较大关系，一般的，该聚合物电芯的空间利用率越大，该锂离子二次电池的能量密度和容量也越大，因此，现有的锂离子二次电池普遍存在着由于聚合物电芯的空间利用率低而导致的锂离子二次电池的能量密度和容量较低的问题。
发明内容
本发明提供了一种带有充电指示灯的二次电化学电池封口体，所述封口体用于封闭所述二次电化学电池的电池壳体的开口部，其中所述封口体包括：负极帽、电路板模块和绝缘垫圈，所述负极帽位于所述电池封口体的最外侧，所述电路板模块位于所述负极帽内侧，与负极帽通过连接件连接；所述电路板模块上与所述负极帽的边缘对应处设置有充电指示灯；所述负极帽与电路板模块连接部位的形状为“C”型环状结构，即负极帽的边缘具有缺口，所述缺口为充电指示灯的通光口，所述缺口具有一定的高度但不超过负极帽的高度，用以将充电指示灯暴露出来，位置对应所述电路板模块上的充电指示灯的位置；所述绝缘垫圈为一柔性且弹性环形绝缘垫层，布置于所述电池壳体、电路板模块与负极帽的空隙中，一部分用于挤压固定电路板模块，另一部分用于隔离所述电池壳体和所述负极帽，所述绝缘垫圈还完全覆盖住所述充电指示灯的通光口，密封所述负极帽、电池壳体及电路板模块所述绝缘垫圈的材料为透明导光材料，能够使充电指示灯发出的亮光透过所述绝缘垫圈并使得整个绝缘垫圈透光。
优选地，所述充电指示灯的颜色至少为一种颜色。
优选地，所述充电指示灯的颜色为一种颜色时，进行充电时一种颜色常亮，充电完成时灯灭。
优选地，所述充电指示灯的颜色为两种颜色时，进行充电时一种颜色常亮，充电完成时另一种颜色常亮。
优选地，在充电过程中出现故障无法正常充电时，所述充电指示灯进行快闪。
优选地，在充电进行的前、中、后三个时期，所述充电指示灯进行快闪的频率逐渐降低，当充电完成时，所述充电指示灯常亮。
优选地，所述电路板模块与所述负极帽之间为焊锡连接。
优选地，所述电路板模块的电路负极输出端设置在所述负极帽与电路板的连接处，使负极输出与电路接地共线。
优选地，所述绝缘垫圈与电池壳体内部接触的部位为圆弧形，用于配合电池壳体的圆弧结构。
优选地，所述封口体用于封闭所述二次电化学电池的电池壳体的开 口部，所述电池还包括电芯和正极帽，其中，所述正极帽与所述电池壳体连接构成所述二次电池的正极；所述电芯放置于所述电池壳体内，位于所述正极帽与所述电路板模块之间。
本发明的带有充电指示灯的二次电化学电池封口体配件结构设计巧妙合理，在所述电化学电池的电路板上设置有充电指示灯，配合电池负极透明的绝缘垫圈，在电池充电时使整个绝缘垫圈都透光，因而能够更容易看到充电提示光。
附图说明
参考随附的附图，本发明更多的目的、功能和优点将通过本发明实施方式的如下描述得以阐明，其中：
图1a为本发明的用于电化学电池的封口体配件的剖视分解图。
图1b为本发明的用于电化学电池的封口体配件的立体图。
图1c为本发明的用于电化学电池的封口体配件的俯视图。
图2a示意性示出了本发明的电化学电池的结构示意图。
图2b是本发明的电化学电池的分解透视图。
图2c是图1a沿A-A方向的剖面图。
具体实施方式
通过参考示范性实施例，本发明的目的和功能以及用于实现这些目的和功能的方法将得以阐明。然而，本发明并不受限于以下所公开的示范性实施例；可以通过不同形式来对其加以实现。说明书的实质仅仅是帮助相关领域技术人员综合理解本发明的具体细节。
应当理解，前述大体的描述和后续详尽的描述均为示例性说明和解释，并不应当用作对本发明所要求保护内容的限制。
在下文中，将参考附图描述本发明的实施例。在附图中，相同的附图标记代表相同或类似的部件，或者相同或类似的步骤。
本发明提供一种带有充电指示灯的二次电化学电池封口体。图1a为本发明的带有充电指示灯的二次电化学电池封口体100的剖视分解图。图1b为本发明的带有充电指示灯的二次电化学电池封口体配件100的立 体图。如图1a所示，所述封口体配件100包括负极帽101、绝缘垫圈102、电路板模块103。负极帽101位于所述电池封口体100的最外侧，电路板模块103位于负极帽101内侧，与负极帽101通过连接件连接。绝缘垫圈102布置于电路板模块103与负极帽101的空隙中。
电路板模块103上与负极帽101的边缘对应处设置有充电指示灯105。所述充电指示灯105为至少一种颜色的指示灯。若充电指示灯105的颜色为一种颜色时，进行充电时一种颜色常亮，充电完成时灯灭；若充电指示灯105的颜色为两种颜色时，进行充电时一种颜色常亮，充电完成时另一种颜色常亮。当电池在充电过程中出现故障无法正常充电时，所述充电指示灯进行快闪，例如1秒5次。在充电进行的前(如30％)、中(如30％-60％)、后(如60％-99％)三个时期，所述充电指示灯进行快闪的频率逐渐降低，当充电完成时，所述充电指示灯常亮。例如，在充电时电池电量达到30％之前，充电指示灯105进行1秒3次的快闪，电量在30％-60％时，充电指示灯105进行1秒2次的快闪，电量达到60％-99％时，充电指示灯105进行1秒1次的快闪，当充电充满时，充电指示灯105常亮。
负极帽101与电路板模块103连接部位的形状为“C”型环状结构，即负极帽的边缘具有缺口104，缺口104为充电指示灯105的通光口，所述缺口104具有一定的高度但不超过负极帽的高度，用以将充电指示灯105暴露出来，其位置对应电路板模块103上的充电指示灯105的位置。绝缘垫圈102为一柔性且弹性环形绝缘垫层，能够完全覆盖住充电指示灯105的通光口(如图1c所示)，绝缘垫圈102的材料为透明导光材料，能够使充电指示灯105发出的亮光透过所述绝缘垫圈并使得整个绝缘垫圈透光。
图2a、2b分别为包含本发明的带有充电指示灯的二次电化学电池封口体的电化学电池200的结构示意图和分解透视图。如图2a、2b所示，所述电化学电池100包括：电池壳体201、置于电池壳体201内的电芯202、负极帽203、置于电芯202和负极帽203之间的空间的电路板模块204以及正极帽205。电芯202外套有电池壳体201，并位于正极帽205 与电路板模块204之间。电池壳体201为圆柱体或长方体结构的钢壳，用于输出正极，固定电路板模块204。根据本发明的一个实施例，正极帽205右旋地与所述电池壳体201成型为一体结构，构成二次电池200的正极。
电路板模块204为至少一层印刷电路板(PCB)，具有第一侧和第二侧，其中第一侧相对于所述电化学电池200指向负极帽203，第二侧相对于所述电化学电池200指向电芯202。PCB是其上印刷有布线图案的电路板，并具有与所述电池200的壳体内径具有大致对应的尺寸。多个印制导线和元器件布置在电路板模块204的第一侧或第二侧。
电路板模块204靠近所述电池200的负极帽203侧，位于电芯202和负极帽203之间。电路板模块204上设置有连接件从而将负极帽203固定在电路板模块204上，例如，负极帽203可以通过焊锡连接在电路板模块204上，也可以通过卡接等方式固定。电路板模块204的电路负极输出端设置在所述负极帽203与电路板的连接处，使负极输出与电路接地共线。
电路板模块204和电芯202之间设置有电极连接线208a和208b，分别将电池的正负极分别引出，其中208a为正极连接线，208b为负极连接线。图2c是图2a沿A-A方向的剖面图。在电路板模块204与外部的电池壳体201之间，负极帽203与电池壳体201之间设置有绝缘垫圈206。绝缘垫圈206为一柔性且具有弹性的环形绝缘垫层，绝缘垫圈206能够起到隔离作为第一电极的电池壳体201和作为第二电极的负极帽203的作用，并且由于绝缘垫圈206的弹性作用能够挤压并固定电路板模块204，密封电池壳体201和负极帽203之间的空隙。具体地，如图2c所示，绝缘垫圈206的一部分用于挤压固定电路板模块204于所述匝线207和电池壳体201之间，另一部分用于隔离所述电池壳体201和所述负极帽203。
电池壳体201的外表面上对应电芯202和印刷电路板206之间的位置有一圈向内的环形凹陷，为匝线207。将所述电芯202放置于所述电池壳体201内，位于正极帽205与所述匝线207的结构之间。绝缘垫圈206和匝线207的设置使得电路板模块204固定在电池壳体201的环形凹陷与电池壳体201底部之间，因此电池壳体201与负极帽203的连接不需 要任何焊接。
匝线207结构的设置用于定位电路板模块204，具体地，将电路板模块204的直径大小设置为在匝线207所构成的环形凹陷的内径与电池壳体201的内径之间，在装配电池时，先将电芯202放置到电池壳体201中，然后将电路板模块204装配到电池壳体201中，电路板模块204的大小尺寸可以卡在匝线207的结构上从而避免了与电芯202的接触，然后再通过绝缘垫圈206将电池壳体201与负极帽203进行隔离，完成了电池200的装配。上述结构使得电路板模块204借助匝线207的结构在电池壳体201内部形成了一个封闭的空间用于容纳电芯202，从而可以增大电芯202的体积，因此增大二次电池的容量。优选地，电芯202为一密闭结构，通过从电芯202内部引出其正负极与相应的电池正负极相连而进行工作。
优选地，上述匝线207相对于电池壳体201表面的凹陷深度为0.2-1.2mm。
本发明的带有充电指示灯的二次电化学电池封口体配件结构设计巧妙合理，在所述电化学电池的电路板上设置有充电指示灯，配合电池负极透明的绝缘垫圈，在电池充电时使整个绝缘垫圈都透光，因而能够更容易看到充电提示光。
结合这里披露的本发明的说明和实践，本发明的其他实施例对于本领域技术人员都是易于想到和理解的。说明和实施例仅被认为是示例性的，本发明的真正范围和主旨均由权利要求所限定。

Claims (10)

  1. 一种带有充电指示灯的二次电化学电池封口体，所述封口体用于封闭所述二次电化学电池的电池壳体的开口部，其中所述封口体包括：负极帽、电路板模块和绝缘垫圈，
    所述负极帽位于所述电池封口体的最外侧，所述电路板模块位于所述负极帽内侧，与负极帽通过连接件连接；
    所述电路板模块上与所述负极帽的边缘对应处设置有充电指示灯；
    所述负极帽与电路板模块连接部位的形状为“C”型环状结构，即负极帽的边缘具有缺口，所述缺口为充电指示灯的通光口，所述缺口具有一定的高度但不超过负极帽的高度，用以将充电指示灯暴露出来，位置对应所述电路板模块上的充电指示灯的位置；
    所述绝缘垫圈为一柔性且弹性环形绝缘垫层，布置于所述电池壳体、电路板模块与负极帽的空隙中，一部分用于挤压固定电路板模块，另一部分用于隔离所述电池壳体和所述负极帽，所述绝缘垫圈还完全覆盖住所述充电指示灯的通光口，密封所述负极帽、电池壳体及电路板模块所述绝缘垫圈的材料为透明导光材料，能够使充电指示灯发出的亮光透过所述绝缘垫圈并使得整个绝缘垫圈透光。
  2. 根据权利要求1所述的二次电化学电池封口体，其中所述充电指示灯的颜色至少为一种颜色。
  3. 根据权利要求2所述的二次电化学电池封口体，其中所述充电指示灯的颜色为一种颜色时，进行充电时一种颜色常亮，充电完成时灯灭。
  4. 根据权利要求2所述的二次电化学电池封口体，其中所述充电指示灯的颜色为两种颜色时，进行充电时一种颜色常亮，充电完成时另一种颜色常亮。
  5. 根据权利要求2所述的二次电化学电池封口体，其中在充电过程中出现故障无法正常充电时，所述充电指示灯进行快闪。
  6. 根据权利要求2所述的二次电化学电池封口体，其中在充电进行的前、中、后三个时期，所述充电指示灯进行快闪的频率逐渐降低，当充电完成时，所述充电指示灯常亮。
  7. 根据权利要求1所述的二次电化学电池封口体，其中所述电路板模块与所述负极帽之间为焊锡连接。
  8. 根据权利要求1所述的二次电化学电池封口体，其中所述电路板模块的电路负极输出端设置在所述负极帽与电路板的连接处，使负极输出与电路接地共线。
  9. 根据权利要求1所述的二次电化学电池封口体，其中所述绝缘垫圈与电池壳体内部接触的部位为圆弧形，用于配合电池壳体的圆弧结构。
  10. 一种包含如权利要求1所述的电池封口体的二次电化学电池，所述封口体用于封闭所述二次电化学电池的电池壳体的开口部，所述电池还包括电芯和正极帽，其中，
    所述正极帽与所述电池壳体连接构成所述二次电池的正极；
    所述电芯放置于所述电池壳体内，位于所述正极帽与所述电路板模块之间。
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