WO2022068027A1 - 一种电池 - Google Patents

一种电池 Download PDF

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Publication number
WO2022068027A1
WO2022068027A1 PCT/CN2020/131695 CN2020131695W WO2022068027A1 WO 2022068027 A1 WO2022068027 A1 WO 2022068027A1 CN 2020131695 W CN2020131695 W CN 2020131695W WO 2022068027 A1 WO2022068027 A1 WO 2022068027A1
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WO
WIPO (PCT)
Prior art keywords
battery
pin assembly
battery according
electrode
hole
Prior art date
Application number
PCT/CN2020/131695
Other languages
English (en)
French (fr)
Inventor
王念举
押媛媛
贾学恒
徐明辉
缪东方
Original Assignee
天津力神电池股份有限公司
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
Application filed by 天津力神电池股份有限公司 filed Critical 天津力神电池股份有限公司
Priority to EP20934233.6A priority Critical patent/EP4009415A4/en
Priority to US17/401,304 priority patent/US20220102766A1/en
Publication of WO2022068027A1 publication Critical patent/WO2022068027A1/zh

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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
    • H01M10/04—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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • 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
    • 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
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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 the technical field of secondary battery structure design, in particular to a battery.
  • a lithium-ion battery is a secondary battery that mainly relies on the movement of lithium ions between the positive and negative electrodes to work.
  • Lithium-ion batteries used in end products are composed of batteries that provide charging and discharging functions and power management circuits.
  • the power management circuits usually have the functions of preventing battery overcharge, overdischarge, abuse of improper temperature environment, and power monitoring.
  • the power management circuit and the battery cell are two independent components, each occupying a part of the space of the battery.
  • the circuit board is about 4mm wide and about 1.8mm thick.
  • pole groups for cylindrical batteries there are two types: winding and lamination. Practice has proved that the energy density of the winding structure is the best.
  • this winding center hole wastes battery space, and on the other hand, due to the existence of the hole, the structure of the pole group may collapse during use. Therefore, most cylindrical batteries will place pins in the center hole of the pole group to stabilize the structure. , however, such a process additionally increases the process complexity.
  • an object of the present application is to provide a battery.
  • a battery provided by the present invention includes:
  • An electrode set comprising a central hole, comprising at least one positive electrode and a negative electrode and a separator separating the positive and negative electrodes, the positive electrode, the negative electrode and the separator being formed in a spiral wound around a central hole, the central hole
  • the diameter is greater than 0 and smaller than the battery diameter
  • a pin assembly with power management function is included, which includes a pin assembly shell with an axial through hole, and the pin assembly shell is partially or completely inserted into the central hole of the electrode group
  • at least one set of integrated circuit devices are arranged in the axial through holes of the pin assembly, and the integrated circuit devices at least contain one electric polarity access terminal and one electric polarity output terminal, and the positive electrode and/or the negative electrode are connected with the The access terminals are conductively connected to achieve battery polarity separation and battery power management functions;
  • a set of battery casings, the battery casings are sealingly connected with the pin assembly casing to form an annular closed cavity capable of accommodating the electrode group.
  • the longitudinal section of the housing of the pin assembly is It comprises a circular tube with an axial through hole and a disc-shaped flange formed outwardly at the top end of the circular tube.
  • the longitudinal section of the battery case is U-shaped, and the cross-section is circular.
  • the longitudinal section of the housing of the pin assembly is It includes a round tube with an axial through hole and a round cup formed by expanding outward at the top end of the round tube.
  • the battery case is in the shape of a disc, and its longitudinal section is in the shape of a "one".
  • the longitudinal section of the housing of the pin assembly is It is a circular tube with an axial through hole.
  • the longitudinal section of the battery casing is shape.
  • it also includes a liquid injection hole for injecting electrolyte into the battery.
  • liquid injection hole is arranged on the central hole of the pin assembly and/or on the disc-shaped flange of the pin assembly and/or on the battery casing and/or connects the pin assembly with the battery.
  • the gap before the shell is sealed serves as the injection hole.
  • liquid injection hole is sealed by a sealing member to prevent leakage of electrolyte from the liquid injection hole.
  • sealing member adopts one of the following structures:
  • the sealing member adopts an end cap structure, which includes an end portion and an embedded portion arranged at the lower end of the end block, the end portion is covered on the upper side of the liquid injection hole, and the embedded portion is inserted into the liquid injection hole Inside;
  • the second type the sealing member is at least one steel ball, the steel ball is inserted into the liquid injection hole, and the steel ball is in an interference fit with the liquid injection hole.
  • the battery is a lithium ion battery, which further includes at least one lithium intercalation electrode.
  • the electrodes and the separator are in the form of flat strips.
  • the electrode group adopts one of the following layer sequences:
  • the pin assembly and the battery casing are made of materials with waterproof properties.
  • the material with waterproof properties is a metal material or a non-metal material.
  • the metal material is stainless steel, aluminum or aluminum alloy.
  • non-metallic material is ceramic or plastic.
  • the integrated circuit device has protection functions such as overcharge, overdischarge, overcurrent, and short circuit.
  • the integrated circuit device includes components with protection functions and components with a connection function, wherein the components with protection functions include but are not limited to PCB boards, IC chips, MOS transistors, NTC, PTC, TCO, resistors, capacitors, and the like. Parts that play a role in connection include PCB, FPC, connector and nickel tape.
  • IC chip integrated circuit chip, used to monitor the voltage, current, etc. of the entire battery circuit
  • MOS tube field effect transistor, as a switch of the protection board circuit, through which the entire battery circuit is turned on and off;
  • Resistor there are series and parallel, mixed, mainly used for voltage division and current limiting;
  • Capacitor in series and parallel, it is used to store charge in the circuit for voltage regulation, and can also be used for coupling, decoupling, bypass, filtering, etc.;
  • NTC Negative temperature coefficient thermistor, the resistance value decreases at higher temperature.
  • PTC Positive temperature coefficient thermistor, the resistance value increases when the temperature is higher.
  • TCO Temperature switch for battery temperature protection.
  • cross-sectional shape of the battery is circular or oval.
  • the pin assembly further includes an insulating substance for separating the housing of the pin assembly from the integrated circuit device.
  • the core difference between the battery obtained according to the present invention and the traditional battery is that the polarity separation function and the power management function of the battery are realized in the above-mentioned central hole of the electrode group.
  • the integrated circuit device used to manage and protect the cell is placed in the center hole of the electrode group, the above-mentioned positive electrode and/or negative electrode are conductively connected to the integrated circuit access terminal, and the integrated circuit output terminal leaks out as a positive electrode and/or a negative electrode. Pole.
  • the IC implements both battery polarity separation and power management functions.
  • the positive electrode is drawn out from the central hole of the electrode group through the above structure, and the negative electrode is conductively connected to the metal casing.
  • the negative electrode is drawn out from the central hole of the electrode group through the above structure, and the positive electrode is connected to the metal casing.
  • both the positive electrode and the negative electrode are drawn out from the central hole of the electrode group through the integrated circuit through the above structure, and the formed battery positive and negative electrodes are the corresponding integrated circuit output terminals.
  • the materials of the pin assembly and the battery casing have waterproof properties.
  • the battery obtained according to the present invention can form an annular cavity through the sealing connection of the battery casing and the pin assembly, in which the electrode group is accommodated to form a stable electrochemical working environment. When assembling, it can be connected by plastic sealing and welding.
  • At least one injection hole is reserved in the battery shell and the shell of the pin assembly, and the electrolyte is injected into the battery through the injection hole.
  • the seal seals the electrolyte within the cell.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Embodiment 2 is a schematic structural diagram of Embodiment 2 of the present invention.
  • Embodiment 3 is a schematic structural diagram of Embodiment 3 of the present invention.
  • FIG. 4 is a schematic diagram of the connection structure between the cell shell and the pin assembly shell in Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of the connection structure between the cell shell and the pin assembly shell in Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram of the connection structure between the cell shell and the pin assembly shell in Embodiment 3 of the present invention.
  • Embodiment 4 of the present invention is a schematic structural diagram of Embodiment 4 of the present invention.
  • FIG. 8 is a schematic diagram of an implementation structure of a cross-section of a cell of the present invention.
  • FIG. 9 is a first schematic diagram of the structure of the integrated circuit device of the present invention.
  • FIG. 10 is a second schematic diagram of the structure of the integrated circuit device of the present invention.
  • FIG. 11 is a schematic diagram of the positional relationship between the integrated circuit device and the housing of the pin assembly according to the present invention.
  • the battery in this embodiment includes:
  • An electrode group 200 including a central hole, which includes at least one positive electrode 201 and a negative electrode 202 and a separator 203 separating the positive and negative electrodes, the positive electrode 201, the negative electrode 202 and the separator 203 being spirally wound around a central hole
  • the diameter of the central hole is larger than 0 and smaller than the diameter of the battery
  • a group of pin assemblies with power management function is included, which includes a pin assembly housing 101 with an axial through hole, and the pin assembly housing 101 is partially inserted into the center of the electrode group In the hole, it also includes an insulating substance 102 for separating the housing and the integrated circuit device 103.
  • the power management component includes a tab adapter 103-8, a PCB 103-7, an FPC 103-1 and a power protection device IC chip 103 -2.
  • Other components can also be set according to actual needs, among which the power protection device PTC and TCO can be set or followed Not set as needed.
  • the insulating substance 102 is provided in the axial through hole of the pin assembly housing 101, the integrated circuit device 103 passes through the insulating substance 102, and the positive electrode 201 and the negative electrode 202 are respectively connected to the power management component.
  • the tab adapter 103-8 is conductively connected to realize the battery protection function;
  • a set of battery casings 300, the battery casings 300 are sealed and connected with the pin assembly to form an annular closed cavity capable of accommodating the electrode group.
  • the two tab adapter pieces 103-8 in the power management component are respectively welded and connected to one end of the positive electrode transition conductor 204 and the negative electrode transition conductor 205.
  • the transition conductors here may have different The positive and negative electrode blank foils can be directly welded and connected to the two tab adapters in the power management component.
  • the other ends of the positive electrode transition conductor 204 and the negative electrode transition conductor 205 are respectively welded and connected to the positive electrode 201 and the negative electrode 202;
  • the insulating substance 102 is partially disposed in the axial through hole of the housing of the pin assembly.
  • the longitudinal section of the insulating material 102 is It includes a columnar part inserted into the axial through hole and an annular part formed by expanding the bottom end of the columnar part outward and completely covering the lower end surface of the axial through hole wall.
  • the insulating material can also be completely arranged in the axial through hole, only the columnar part is retained, and at the same time, it can also extend beyond the upper shell and extend outward to form an "I" shape, and this transformation also belongs to the protection scope of the present application.
  • a layer of insulating tape 300-a is laid on the inner side of the bottom end of the battery case 300 to prevent a short circuit between the two tab adapters 103-8 in the power management component and the battery case 300.
  • a short circuit occurs between the positive electrode transition conductor 204 , the negative electrode transition conductor 205 and the battery case 300 .
  • the longitudinal section of the pin assembly housing 101 is It includes a circular tube with an axial through hole and a disc-shaped flange formed at the top end of the circular tube.
  • the longitudinal section of the battery case 300 is U-shaped, and the battery case 300 It is an integral molding structure with the pin assembly housing 101 , and can also be a splicing molding structure.
  • the difference between the battery of this embodiment and the first embodiment is that the structure of the battery shell 300 and the pin assembly shell 101 are different, and the other structures are the same as those of the first embodiment.
  • This embodiment includes an electrode group 200 including a central hole, including at least one positive electrode 201 and one negative electrode 202, and a separator 203 separating the positive and negative electrodes, the positive electrode 201, the negative electrode 202 and the separator 203 surrounding a central hole It is formed by spiral winding, and the diameter of the central hole is larger than 0 and smaller than the diameter of the battery;
  • a group of pin assemblies with power management function is included, which includes a pin assembly housing 101 with an axial through hole, and the pin assembly housing 101 is partially inserted into the center of the electrode group In the hole, it also includes an insulating substance 102 for separating the housing and the integrated circuit device 103.
  • the power management component includes a tab adapter 103-8, a PCB 103-7, an FPC 103-1 and a power protection device IC chip 103 -2.
  • Other components can also be set according to actual needs, among which the power protection device PTC and TCO can be set or followed Not set as needed.
  • the insulating substance 102 is provided in the axial through hole of the pin assembly housing 101, the integrated circuit device 103 passes through the insulating substance 102, and the positive electrode 201 and the negative electrode 202 are respectively connected to the power management component.
  • the tab adapter 103-8 is conductively connected to realize the battery protection function;
  • a set of battery casings 300, the battery casings 300 are sealed and connected with the pin assembly to form an annular closed cavity capable of accommodating the electrode group.
  • the two tab adapter pieces 103-8 in the power management component are respectively welded and connected to one end of the positive electrode transition conductor 204 and the negative electrode transition conductor 205.
  • the transition conductors here may have different The positive and negative electrode blank foils can be directly welded and connected to the two tab adapters in the power management component.
  • the other ends of the positive electrode transition conductor 204 and the negative electrode transition conductor 205 are respectively welded and connected to the positive electrode 201 and the negative electrode 202;
  • the insulating substance 102 is partially disposed in the axial through hole of the housing of the pin assembly.
  • the longitudinal section of the insulating material 102 is It includes a columnar part inserted into the axial through hole and an annular part formed by expanding the bottom end of the columnar part outward and completely covering the lower end surface of the axial through hole wall.
  • the insulating material can also be completely arranged in the axial through hole, only the columnar part is retained, and at the same time, it can also extend beyond the upper shell and extend outward to form an "I" shape, and this transformation also belongs to the protection scope of the present application.
  • a layer of insulating tape 300-a is laid on the inner side of the bottom end of the battery case 300 to prevent a short circuit between the two tab adapters 103-8 in the power management component and the battery case 300.
  • a short circuit occurs between the positive electrode transition conductor 204 , the negative electrode transition conductor 205 and the battery case 300 .
  • the longitudinal section of the pin assembly housing 101 is It includes a round tube with an axial through hole and a round cup formed at the top end of the round tube.
  • the battery casing is in the shape of a disc, and its longitudinal section is in the shape of a "one".
  • the battery housing 300 and the pin assembly housing 101 are integrally formed, and may also be a spliced and formed structure.
  • the difference between the battery of this embodiment and Embodiment 1 and Embodiment 2 is that the structure of the battery casing 300 and the pin assembly casing 101 are different, and the other structures are the same as those of Embodiment 1 and Embodiment 2.
  • Example 2 is the same.
  • This embodiment includes an electrode group 200 including a central hole, including at least one positive electrode 201 and one negative electrode 202, and a separator 203 separating the positive and negative electrodes, the positive electrode 201, the negative electrode 202 and the separator 203 surrounding a central hole It is formed by spiral winding, and the diameter of the central hole is larger than 0 and smaller than the diameter of the battery;
  • a group of pin assemblies with power management function is included, which includes a pin assembly housing 101 with an axial through hole, and the pin assembly housing 101 is partially inserted into the center of the electrode group In the hole, it also includes an insulating substance 102 for separating the housing and the integrated circuit device 103.
  • the power management component includes a tab adapter 103-8, a PCB 103-7, an FPC 103-1 and a power protection device IC chip 103 -2.
  • Other components can also be set according to actual needs, among which the power protection device PTC and TCO can be set or followed Not set as needed.
  • the insulating substance 102 is provided in the axial through hole of the pin assembly housing 101, the integrated circuit device 103 passes through the insulating substance 102, and the positive electrode 201 and the negative electrode 202 are respectively connected to the power management component.
  • the tab adapter 103-8 is conductively connected to realize the battery protection function;
  • a set of battery casings 300, the battery casings 300 are sealed and connected with the pin assembly to form an annular closed cavity capable of accommodating the electrode group.
  • the two tab adapter pieces 103-8 in the power management component are respectively welded and connected to one end of the positive electrode transition conductor 204 and the negative electrode transition conductor 205.
  • the transition conductors here may have different The positive and negative electrode blank foils can be directly welded and connected to the two tab adapters in the power management component.
  • the other ends of the positive electrode transition conductor 204 and the negative electrode transition conductor 205 are respectively welded and connected to the positive electrode 201 and the negative electrode 202;
  • the insulating substance 102 is partially disposed in the axial through hole of the housing of the pin assembly.
  • the longitudinal section of the insulating material 102 is It includes a columnar part inserted into the axial through hole and an annular part formed by expanding the bottom end of the columnar part outward and completely covering the lower end surface of the axial through hole wall.
  • the insulating material can also be completely arranged in the axial through hole, only the columnar part is retained, and at the same time, it can also extend beyond the upper shell and extend outward to form an "I" shape, and this transformation also belongs to the protection scope of the present application.
  • a layer of insulating tape 300-a is laid on the inner side of the bottom end of the battery case 300 to prevent a short circuit between the two tab adapters 103-8 in the power management component and the battery case 300.
  • a short circuit occurs between the positive electrode transition conductor 204 , the negative electrode transition conductor 205 and the battery case 300 .
  • the longitudinal section of the pin assembly housing 101 is It is a circular tube with an axial through hole.
  • the longitudinal section of the battery case 300 is shape.
  • the housing 101 of the pin assembly is an integral molding structure, and may also be a splicing molding structure.
  • the battery case 300 is a spliced structure.
  • this embodiment can be improved based on the foregoing Embodiment 1, Embodiment 2, and Embodiment 3, respectively.
  • the liquid injection hole 400 is provided on the battery case 300.
  • the liquid injection hole 400 can also be opened at other positions and/or pins of the battery case 300 according to the conventional knowledge mastered by those skilled in the art On the assembly, on the insulating material 102 .
  • the cross-sectional shape of the battery of the present invention can be circular or oval and other shapes that can be made according to the conventional knowledge acquired by those skilled in the art.
  • the solution of the present invention is preferably applicable to cylindrical lithium-ion batteries.
  • the electrode group 200 selected for the battery of the present invention is consistent with the traditional cylindrical battery, that is, the electrode group 200 is formed by at least one positive electrode 201 and at least one negative electrode 202 and a separator 203 separating the positive and negative electrodes.
  • the positive electrode 201 is usually composed of a foil-like (or mesh-like) metal current collector and a positive electrode active material coated on its surface.
  • the foil material is particularly preferably aluminum (or aluminum alloy), and the positive electrode active material can be lithium cobalt oxide/phosphoric acid.
  • the negative electrode 202 is usually composed of a foil-like (or mesh-like) metal current collector and a negative electrode active material coated on its surface.
  • the foil material is particularly preferably copper (or copper alloy), and the negative electrode active material can be carbon material/titanic acid.
  • the membrane 203 is preferably a plastic film, especially a polyolefin film, such as a polyethylene film.
  • the membrane 203 can also be a multi-layer structure, such as ceramic/polyethylene/ceramic.
  • the above-mentioned positive electrode/negative electrode/separator is usually made into a flat strip, and is wound in a spiral form in a fixed sequence to form an electrode group 200 .
  • the usual winding sequence can be one of two structures: positive electrode/separator/negative electrode/separator, negative electrode/separator/positive electrode/separator. No matter what kind of winding, after the winding is completed and the winding needle is pulled out, a central hole will be formed in the center of the electrode group, and the diameter of the central hole is approximately equal to the diameter of the winding needle, usually greater than 1mm.
  • the dimensions of the battery case 300 , the electrode group 200 , the center hole and the pin assembly 100 are all set according to the conventional knowledge mastered by those skilled in the art, and will not be described in detail.
  • the present invention can adopt the following processing technology, with the structure in Example 1 as an example:
  • Polypropylene plastic is injected into the housing 101 of the pin assembly through a template injection method to form an insulating substance 102, and finally the hard PCB board in the power management part is completely wrapped, the FPC soft board in the power management part is partially wrapped, and the rest is from the upper end.
  • the two tab adapters 103-8 in the power management component are partially wrapped, and the rest are led out from the lower end for directly or indirectly conducting electricity with the positive and negative electrodes. Link.
  • the insulating substance 102 is tightly combined with the inner wall of the metal pin assembly housing 101 .
  • the battery that realizes the above operation is finally formed into a rechargeable and dischargeable secondary lithium ion cylindrical battery through conventional chemical composition sorting and other general procedures.

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  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Materials Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)
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Abstract

一种电池，包括一个具有中心孔的由正电极（201）、负电极（202）及隔膜（203）卷绕成型的电极组（200），在电极组（200）中心孔内，设置了一组具有电源管理功能的插针组件（100），插针组件（100）包括一个插件式壳体（101）、该壳体（101）的中心孔内包括至少一组集成电路器件（103），集成电路器件（103）一端含有至少一个电极引出导体，另一端为一个电源接口，电极组（200）中的正电极（201）和/或负电极（202）可通过上述导体引出，同时该插针组件（100）可与电池外壳（300）密封连接形成环状空腔，将电极组（200）密封在内部形成电化学隔绝工作环境。此结构将一个具有电源管理功能的插针组件（100）布置在了卷绕本身存在的不可去除的卷绕中心孔内，节省了原本用于实施极性分离以及外部布局电源管理的空间，大大提升电池能量密度。

Description

一种电池 技术领域
本发明涉及二次电池结构设计技术领域，具体涉及了一种电池。
背景技术
锂离子电池是一种二次电池，它主要依靠锂离子在正极和负极之间移动来工作。
应用于终端产品的锂离子电池由提供充放电功能的电池及电源管理电路构成，电源管理电路通常具备防止电池过充、过放、不当温度环境滥用及电量监控功能。通常地，电源管理电路与电芯是两件相互独立的部件，各自占据电池一部分空间。例如，对于18650圆柱形电池，其由18650电池和位于其侧面的电源管理电路板构成，该电路板宽度约4mm，厚度约1.8mm。
目前圆柱形电池的极组成型有卷绕和叠片两种工艺，实践证明卷绕结构能量密度为最优，当采用卷绕成型圆柱形极组时，不可避免的会遗留因放置卷针而造成的卷绕中心孔，该孔直径一般大于1mm。这个卷绕中心孔一方面浪费电池空间，另一方面由于孔的存在还可能导致极组在使用过程中结构坍塌，故大多数圆柱形电池会在极组的中心孔内放置插针以稳定结构，然而，此种工艺额外增加了工艺复杂度。
发明内容
为了解决上述问题，本申请的目的在于提供一种电池。
为实现本发明的目的，本发明提供的一种电池，包括：
一个包括中心孔的电极组，其包括至少一个正电极和一个负电极以及分隔正负电极的隔膜，所述正电极、负电极及隔膜围绕一个中心孔以螺旋卷绕方式成形，所述中心孔直径大于0，小于电池直径；
在电极组中心孔内，包括一个具有电源管理功能的插针组件，其包括一个带轴向通孔的插针组件壳体，所述插针组件壳体部分或全部插入所述电极 组中心孔内、所述插针组件轴向通孔内设置至少一组集成电路器件，所述集成电路器件至少含有一个电极性接入端子和一个电极性输出端子，所述正电极和/或负电极与所述接入端子导电连接，以实现电池极性分离及电池的电源管理功能；
一组电池外壳，所述电池外壳与所述插针组件壳体密封连接，形成能够容纳所述电极组的环状密闭空腔。
进一步地，所述插针组件壳体的纵截面呈
Figure PCTCN2020131695-appb-000001
型，其包括一带有轴向通孔圆管和在所述圆管顶端向外展开形成的圆盘形翼缘。
进一步地，所述电池外壳的纵截面为U形，横截面为圆形。
进一步地，所述插针组件壳体的纵截面呈
Figure PCTCN2020131695-appb-000002
形，其包括一带有轴向通孔圆管和在所述圆管顶端向外展开形成的圆杯。
进一步地，所述电池外壳为圆盘形，其纵截面为“一”字形。
进一步地，所述插针组件壳体的纵截面呈
Figure PCTCN2020131695-appb-000003
形，其为一带有轴向通孔圆管。
进一步地，所述电池外壳的纵截面为
Figure PCTCN2020131695-appb-000004
形。
进一步地，还包括一个用于向所述电池内注入电解液的注液孔。
进一步地，所述注液孔设置在所述插针组件中心孔上和/或插针组件的圆盘形翼缘上和/或设置在所述电池外壳上和/或将插针组件与电池外壳密封前的缝隙作为注液孔。
进一步地，所述注液孔通过密封件密封，用于防止电解液从所述注液孔泄漏。
进一步地，所述密封件采用如下结构之一：
第一种：所述密封件采用端帽结构，其包括端部以及设置在端块下端的嵌入部，所述端部盖合在注液孔上侧，所述嵌入部插入所述注液孔内；
第二种：所述密封件为至少一个钢球，所述钢球塞入所述注液孔内，且所述钢球与所述注液孔过盈配合。
进一步地，所述电池为锂离子电池，其还包括至少一个嵌锂电极。
进一步地，电极和隔膜呈扁平条带形式。
进一步地，所述电极组采用如下层序之一：
负电极/隔膜/正电极/隔膜，
正电极/隔膜/负电极/隔膜。
进一步地，所述插针组件与电池外壳采用具有防水特性的材质。
进一步地，所述具有防水特性的材质为金属材质或非金属材质。
进一步地，所述金属材质为不锈钢、铝或铝合金。
进一步地，所述非金属材质为陶瓷或塑料。
进一步地，所述集成电路器件具有过充电、过放电，过电流，短路等保护功能。所述集成电路器件包括具有保护功能的部件以及起连接作用的部件，其中，具有保护功能的部件包括但不限于PCB板、IC芯片、MOS管、NTC、PTC、TCO、电阻、电容等。起连接作用的部件包括PCB、FPC、connector和镍带等。
具体地，
IC芯片：集成电路芯片，用于监测整个电池回路的电压、电流等；
MOS管：场效晶体管，作为保护板回路的开关，通过它打开和关断整个电池回路；
电阻:有串并联、混联，主要用于分压和限流；
电容：有串并联，在电路中用于存储电荷用于稳压，还可用于耦合、去耦合、旁路、滤波等；
NTC:负温度系数热敏电阻器，在温度越高时电阻值越低。
PTC：正温度系数热敏电阻器，在温度越高时电阻值越大。
TCO：温度开关，用于电池温度保护。
进一步地，所述电池的截面形状为圆形或椭圆形。
进一步地，所述插针组件还包括用于分离插针组件壳体与集成电路器件的 绝缘物质。
依照本发明所得的电池，其与传统电池的核心区别在于，其电池的极性分离功能以及电源管理功能在上述的电极组中心孔内实现。用作管理保护电芯的集成电路器件被置于电极组中心孔内，上述正电极和/或负电极与集成电路接入端子导电连接，集成电路输出端子漏出作为正电极和/或负电极引出极子。该集成电路同时实现了电池极性分离和电源管理功能。
例如，将正电极通过上述结构从电极组中心孔引出，将负电极导电连接在金属外壳上，所构成的电池正极极子为中心孔引出的集成电路输出端子，负极极子为金属外壳。
例如，将负电极通过上述结构从电极组中心孔引出，将正电极连接在金属外壳上，所构成的电池正极极子为金属外壳，负极极子为中心孔引出的集成电路输出端子。
例如，将正电极和负电极均通过上述结构从电极组中心孔通过集成电路引出，所构成的电池正负极子为对应的集成电路输出端子。
为提高密封防水的功能，插针组件与电池外壳的材质均具有防水特性。
依照本发明所得的电池，通过电池外壳与插针组件密封连接，可形成环状空腔，将电极组容纳在其中形成稳定的电化学工作环境。组装时可采用塑封、焊接方式连接。
为实现电解液注入电池，在电池外壳与插针组件壳体预留有至少一个注液孔，电解液经所述注液孔注入电池内，所述注液孔处设有密封件，所述密封件将电解液封堵在电池内。
附图说明
图1为本发明实施例1的结构示意图；
图2为本发明实施例2的结构示意图；
图3为本发明实施例3的结构示意图；
图4为本发明实施例1中电芯外壳与插针组件壳体连接结构示意图；
图5为本发明实施例2中电芯外壳与插针组件壳体连接结构示意图；
图6为本发明实施例3中电芯外壳与插针组件壳体连接结构示意图；
图7为本发明实施例4的结构示意图；
图8为本发明电芯截面的一种实施结构的示意图；
图9为本发明集成电路器件的结构第一示意图；
图10为本发明集成电路器件的结构第二示意图；
图11为本发明集成电路器件与插针组件壳体位置关系示意图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
以下结合附图和具体实施例对本发明作进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例1
如图1、图9-图11所示，本实施例电池包括：
一个包括中心孔的电极组200，其包括至少一个正电极201和一个负电极202以及分隔正负电极的隔膜203，所述正电极201、负电极202及隔膜203围绕一个中心孔以螺旋卷绕方式成形，所述中心孔直径大于0，小于电池直径；
在电极组中心孔内，包括一组具有电源管理功能的插针组件，其包括一个带轴向通孔的插针组件壳体101，所述插针组件壳体101部分插入所述电极组中心孔内、还包括用于分离壳体与集成电路器件103的绝缘物质102，所述电源管理部件包括极耳转接片103-8、PCB 103-7、FPC103-1以及电源保护器件IC芯片103-2、MOS管103-3、电阻103-4、电容103-5、NTC103-6、PTC和TCO等，还可以根据实际需求，设置其他部件，其中电源保护器件PTC和TCO可设置也可跟据需要不设置。所述绝缘物质102设在所述插针组件壳体101的轴向通孔内，集成电路器件103穿过所述绝缘物质102，所 述正电极201和负电极202分别与电源管理部件中的极耳转接片103-8导电连接，以实现电池保护功能；
一组电池外壳300，所述电池外壳300与所述插针组件密封连接，形成能够容纳所述电极组的环状密闭空腔。
其中，所述电源管理部件中的两个极耳转接片103-8分别与正电极过渡导体204、负电极过渡导体205的一端焊接连接，需要说明的是，此处的过渡导体可以有也可用正负极片空箔与电源管理部件中的两个极耳转接片直接焊接连接。正电极过渡导体204、负电极过渡导体205的另一端分别与所述正电极201和负电极202焊接连接；
其中，所述绝缘物质102部分设在所述插针组件壳体的轴向通孔内。所述绝缘物质102纵截面为
Figure PCTCN2020131695-appb-000005
形，其包括插入所述轴向通孔内的柱状部以及柱状部底端向外展开形成的、将所述轴向通孔壁下端面完全覆盖的环状部。采用此种结构，避免轴向通孔壁下端面与电源管理部件中的两个极耳转接片103-8接触发生短路。当然，绝缘物质也可全部设置在轴向通孔内，只保留柱状部，同时也可以超出上壳并向外延展，形成“工”字型，此种变换也属于本申请的保护范围。
需要说明的是，电池外壳300底端内侧面铺设一层绝缘胶带300-a，用于防止电源管理部件中的两个极耳转接片103-8与电池外壳300之间发生短路，同样防止正电极过渡导体204、负电极过渡导体205与电池外壳300之间发生短路。
如图4所示，所述插针组件壳体101的纵截面呈
Figure PCTCN2020131695-appb-000006
型，其包括一带有轴向通孔圆管和在所述圆管顶端向外展开形成的圆盘形翼缘，相应地，所述电池外壳300的纵截面为U形，所述电池外壳300和插针组件壳体101为一体成型结构，也可为拼接成型结构。
实施例2
如图2，图9-图11所示，本实施例的电池与实施例1的区别在于电池外 壳300和插针组件壳体101的结构不同，其余结构均与实施例1相同。
本实施例包括一个包括中心孔的电极组200，其包括至少一个正电极201和一个负电极202以及分隔正负电极的隔膜203，所述正电极201、负电极202及隔膜203围绕一个中心孔以螺旋卷绕方式成形，所述中心孔直径大于0，小于电池直径；
在电极组中心孔内，包括一组具有电源管理功能的插针组件，其包括一个带轴向通孔的插针组件壳体101，所述插针组件壳体101部分插入所述电极组中心孔内、还包括用于分离壳体与集成电路器件103的绝缘物质102，所述电源管理部件包括极耳转接片103-8、PCB 103-7、FPC103-1以及电源保护器件IC芯片103-2、MOS管103-3、电阻103-4、电容103-5、NTC103-6、PTC和TCO等，还可以根据实际需求，设置其他部件，其中电源保护器件PTC和TCO可设置也可跟据需要不设置。所述绝缘物质102设在所述插针组件壳体101的轴向通孔内，集成电路器件103穿过所述绝缘物质102，所述正电极201和负电极202分别与电源管理部件中的极耳转接片103-8导电连接，以实现电池保护功能；
一组电池外壳300，所述电池外壳300与所述插针组件密封连接，形成能够容纳所述电极组的环状密闭空腔。
其中，所述电源管理部件中的两个极耳转接片103-8分别与正电极过渡导体204、负电极过渡导体205的一端焊接连接，需要说明的是，此处的过渡导体可以有也可用正负极片空箔与电源管理部件中的两个极耳转接片直接焊接连接。正电极过渡导体204、负电极过渡导体205的另一端分别与所述正电极201和负电极202焊接连接；
其中，所述绝缘物质102部分设在所述插针组件壳体的轴向通孔内。所述绝缘物质102纵截面为
Figure PCTCN2020131695-appb-000007
形，其包括插入所述轴向通孔内的柱状部以及柱状部底端向外展开形成的、将所述轴向通孔壁下端面完全覆盖的环状部。采用此种结构，避免轴向通孔壁下端面与电源管理部件中的两个极耳转接片 103-8接触发生短路。当然，绝缘物质也可全部设置在轴向通孔内，只保留柱状部，同时也可以超出上壳并向外延展，形成“工”字型，此种变换也属于本申请的保护范围。
需要说明的是，电池外壳300底端内侧面铺设一层绝缘胶带300-a，用于防止电源管理部件中的两个极耳转接片103-8与电池外壳300之间发生短路，同样防止正电极过渡导体204、负电极过渡导体205与电池外壳300之间发生短路。
如图5所示，插针组件壳体101的纵截面呈
Figure PCTCN2020131695-appb-000008
形，其包括一带有轴向通孔圆管和在所述圆管顶端向外展开形成的圆杯，相应地，所述电池外壳为圆盘形，其纵截面为“一”字形。其中，所述电池外壳300和插针组件壳体101为一体成型结构，也可为拼接成型结构。
实施例3
如图3，图9-图11所示，本实施例的电池与实施例1、实施例2的区别在于电池外壳300和插针组件壳体101的结构不同，其余结构均与实施例1、实施例2相同。
本实施例包括一个包括中心孔的电极组200，其包括至少一个正电极201和一个负电极202以及分隔正负电极的隔膜203，所述正电极201、负电极202及隔膜203围绕一个中心孔以螺旋卷绕方式成形，所述中心孔直径大于0，小于电池直径；
在电极组中心孔内，包括一组具有电源管理功能的插针组件，其包括一个带轴向通孔的插针组件壳体101，所述插针组件壳体101部分插入所述电极组中心孔内、还包括用于分离壳体与集成电路器件103的绝缘物质102，所述电源管理部件包括极耳转接片103-8、PCB 103-7、FPC103-1以及电源保护器件IC芯片103-2、MOS管103-3、电阻103-4、电容103-5、NTC103-6、PTC和TCO等，还可以根据实际需求，设置其他部件，其中电源保护器件PTC和TCO可设置也可跟据需要不设置。所述绝缘物质102设在所述插针 组件壳体101的轴向通孔内，集成电路器件103穿过所述绝缘物质102，所述正电极201和负电极202分别与电源管理部件中的极耳转接片103-8导电连接，以实现电池保护功能；
一组电池外壳300，所述电池外壳300与所述插针组件密封连接，形成能够容纳所述电极组的环状密闭空腔。
其中，所述电源管理部件中的两个极耳转接片103-8分别与正电极过渡导体204、负电极过渡导体205的一端焊接连接，需要说明的是，此处的过渡导体可以有也可用正负极片空箔与电源管理部件中的两个极耳转接片直接焊接连接。正电极过渡导体204、负电极过渡导体205的另一端分别与所述正电极201和负电极202焊接连接；
其中，所述绝缘物质102部分设在所述插针组件壳体的轴向通孔内。所述绝缘物质102纵截面为
Figure PCTCN2020131695-appb-000009
形，其包括插入所述轴向通孔内的柱状部以及柱状部底端向外展开形成的、将所述轴向通孔壁下端面完全覆盖的环状部。采用此种结构，避免轴向通孔壁下端面与电源管理部件中的两个极耳转接片103-8接触发生短路。当然，绝缘物质也可全部设置在轴向通孔内，只保留柱状部，同时也可以超出上壳并向外延展，形成“工”字型，此种变换也属于本申请的保护范围。
需要说明的是，电池外壳300底端内侧面铺设一层绝缘胶带300-a，用于防止电源管理部件中的两个极耳转接片103-8与电池外壳300之间发生短路，同样防止正电极过渡导体204、负电极过渡导体205与电池外壳300之间发生短路。
如图6所示，插针组件壳体101的纵截面呈
Figure PCTCN2020131695-appb-000010
形，其为一带有轴向通孔圆管。所述电池外壳300的纵截面为
Figure PCTCN2020131695-appb-000011
形。其中，插针组件壳体101为一体成型结构，也可为拼接成型结构。此种情况下，电池外壳300为拼接结构。
实施例4
如图7所示，本实施例能够分别基于上述实施例1、实施例2、实施例3 进行改进。本实施例中，注液孔400设置在所述电池外壳300上，当然，注液孔400根据本领域技术人员掌握的常规知识，也可开设在电池外壳300的其它位置上和/或插针组件上、绝缘物质102上。
本实施例其余结构均相应结合实施例1、实施例2、实施例3的结构。
如图8所示，本发明电池的横截面形状可为圆形或椭圆形以及其他根据本领域技术人员掌握的常规知识所能做出的形状。
需要说明的是，本发明方案优选适用于圆柱形锂离子电池。
需要说明的是，本发明电池选用的电极组200与传统圆柱形电池一致，即由至少一个正电极201和至少一个负电极202及分隔正负电极的隔膜203同轴螺旋卷绕成电极组200。其正电极201通常由箔状(或网状)金属集流体与涂覆在其面上的正极活性物质组成，箔材特别优选铝(或者铝合金)，正极活性物质可以是钴酸锂/磷酸铁锂/锰酸锂/钛酸锂/NCM三元材料/NCA三元材料中的一种或几种混合物。负电极202通常由箔状(或网状)金属集流体与涂覆在其面上的负极活性物质组成，箔材特别优选铜(或铜合金)，负极活性物质可以是碳素材料/钛酸锂/锂的一种或几种混合物。隔膜203优选一种塑料膜，特别是聚烯烃膜，例如聚乙烯膜。当然，隔膜203也可以是一种多层结构，如陶瓷/聚乙烯/陶瓷。上述正电极/负电极/隔膜通常被制作成扁平的条状，固定序列地以螺旋形式卷绕成电极组200。通常的卷绕顺序可以是以下两种结构中的一种：正电极/隔膜/负电极/隔膜，负电极/隔膜/正电极/隔膜。无论那种方式卷绕，在完成卷绕，拔出卷针后，在电极组中心会形成一个中心孔，该中心孔直径约等于卷针直径，通常大于1mm。
需要说明的是，本发明中，电池外壳300、电极组200、中心孔以及插针组件100等尺寸，均根据本领域技术人员掌握的常规知识进行设置，不再详述。
本发明可采用如下加工工艺，以实施例1中的结构进行举例：
插针组件壳体101内通过模板注塑法注入了聚丙烯塑料，形成绝缘物质 102，最终将电源管理部件中的PCB硬板完全包裹，电源管理部件中的FPC软板部分包裹，其余部分从上端部引出，用于直接与电子元器件接口衔接，电源管理部件中的两个极耳转接片103-8部分包裹，其余部分从下端部引出，用于直接或者间接地与正负极片导电链接。同时绝缘物质102与金属插针组件壳体101内壁紧密结合。
将插针组件100的插针组件壳体101插入电极组200的中心孔内，然后将插针组件壳体101内的电源管理部件中的两个极耳转接片103-8向外弯折后分别与电极组200的正电极过渡导体204、负电极过渡导体205焊接。上述电极组200与插针组件100完成组装后再整体装入盛有电解液的电池外壳300内，通过激光焊接工艺将插针组件100和电池外壳300在连接处焊接上，最终形成环状空腔将电极组200容纳在其中。
实现上述操作的电池再经过传统化成分选等通用工序最终形成可充放电二次锂离子圆柱电池。
需要说明的是，本申请中未详述的技术方案，采用公知技术。
以上所述仅是本发明的优选实施方式，应当指出的是，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (23)

  1. 一种电池，其特征在于，包括：
    一个包括中心孔的电极组，其包括至少一个正电极和一个负电极以及分隔正负电极的隔膜，所述正电极、负电极及隔膜围绕一个中心孔以螺旋卷绕方式成形，所述中心孔直径大于0，小于电池直径；
    在电极组中心孔内，包括一个具有电源管理功能的插针组件，其包括一个带轴向通孔的插针组件壳体，所述插针组件壳体部分或全部插入所述电极组中心孔内、所述插针组件轴向通孔内设置至少一组集成电路器件，所述集成电路器件至少含有一个电极性接入端子和一个电极性输出端子，所述正电极和/或负电极与所述接入端子导电连接，以实现电池极性分离及电池的电源管理功能；
    一组电池外壳，所述电池外壳与所述插针组件壳体密封连接，形成能够容纳所述电极组的环状密闭空腔。
  2. 根据权利要求1所述的一种电池，其特征在于，所述插针组件壳体的纵截面呈
    Figure PCTCN2020131695-appb-100001
    型，其包括一带有轴向通孔圆管和在所述圆管顶端向外展开形成的圆盘形翼缘。
  3. 根据权利要求2所述的一种电池，其特征在于，所述电池外壳的纵截面为U形，横截面为圆形。
  4. 根据权利要求1所述的一种电池，其特征在于，所述插针组件壳体的纵截面呈
    Figure PCTCN2020131695-appb-100002
    形，其包括一带有轴向通孔圆管和在所述圆管顶端向外展开形成的圆杯。
  5. 根据权利要求4所述的一种电池，其特征在于，所述电池外壳为圆盘形，其纵截面为“一”字形。
  6. 根据权利要求1所述的一种电池，其特征在于，所述插针组件壳体的纵截面呈“||”形，其为一带有轴向通孔圆管。
  7. 根据权利要求6所述的一种电池，其特征在于，所述电池外壳的纵截面为
    Figure PCTCN2020131695-appb-100003
    形。
  8. 根据权利要求1所述的一种电池，其特征在于，还包括一个用于向所述电池内注入电解液的注液孔。
  9. 根据权利要求8所述的一种电池，其特征在于，所述注液孔设置在所述插针组件中心孔上和/或插针组件的圆盘形翼缘上和/或设置在所述电池外壳上和/或将插针组件与电池外壳密封前的缝隙作为注液孔。
  10. 根据权利要求9所述的一种电池，其特征在于，所述注液孔通过密封件密封，用于防止电解液从所述注液孔泄漏。
  11. 根据权利要求10所述的一种电池，其特征在于，所述密封件采用如下结构之一：
    第一种：所述密封件采用端帽结构，其包括端部以及设置在端块下端的嵌入部，所述端部盖合在注液孔上侧，所述嵌入部插入所述注液孔内；
    第二种：所述密封件为至少一个钢球，所述钢球塞入所述注液孔内，且所述钢球与所述注液孔过盈配合。
  12. 根据权利要求1所述的一种电池，其特征在于，所述电池为锂离子电池，其还包括至少一个嵌锂电极。
  13. 根据权利要求1所述的一种电池，其特征在于，电极和隔膜呈扁平条带形式。
  14. 根据权利要求1所述的一种电池，其特征在于，所述电极组采用如下层序之一：
    负电极/隔膜/正电极/隔膜，
    正电极/隔膜/负电极/隔膜。
  15. 根据权利要求1所述的一种电池，其特征在于，所述插针组件与电池外壳采用具有防水特性的材质。
  16. 根据权利要求16所述的一种电池，其特征在于，所述具有防水特性的材质为金属材质或非金属材质。
  17. 根据权利要求17所述的一种电池，其特征在于，所述金属材质为不 锈钢、铝或铝合金。
  18. 根据权利要求17所述的一种电池，其特征在于，所述非金属材质为陶瓷或塑料。
  19. 根据权利要求1所述的一种电池，其特征在于，所述的集成电路器件包括具有保护功能的部件以及起连接作用的部件。
  20. 根据权利要求20所述的一种电池，其特征在于，所述具有保护功能的部件包括如下一种或几种元件：
    用于监测整个电池回路的电压、电流的IC芯片；
    用于作为保护板回路的开关MOS管；
    用于分压和限流的电阻；
    用于稳压的电容；
    负温度系数热敏电阻器NTC、正温度系数热敏电阻器PTC。
  21. 根据权利要求20所述的一种电池，其特征在于，起连接作用的部件包括如下一种或几种元件：PCB、FPC、connector、镍带。
  22. 根据权利要求1所述的一种电池，其特征在于，所述电池的截面形状为圆形或椭圆形。
  23. 根据权利要求1所述的一种电池，其特征在于，所述插针组件还包括用于分离插针组件壳体与集成电路器件的绝缘物质。
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