WO2023029200A1 - 一种可充电锂电池装置 - Google Patents
一种可充电锂电池装置 Download PDFInfo
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- WO2023029200A1 WO2023029200A1 PCT/CN2021/128338 CN2021128338W WO2023029200A1 WO 2023029200 A1 WO2023029200 A1 WO 2023029200A1 CN 2021128338 W CN2021128338 W CN 2021128338W WO 2023029200 A1 WO2023029200 A1 WO 2023029200A1
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- Prior art keywords
- circuit board
- rechargeable lithium
- lithium battery
- battery cell
- metal
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 claims abstract description 50
- 239000002184 metal Substances 0.000 claims abstract description 50
- 230000001681 protective effect Effects 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000002313 adhesive film Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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 battery cells used are already popular and commonly used battery cells in industrial production, such as in the rechargeable batteries of electric vehicles, usually A large number of 18650 battery cells are used.
- this type of battery cell can form the 18650 type battery commonly used by ordinary consumers.
- This type of battery is a cylindrical battery.
- Existing rechargeable lithium batteries are usually set at both ends as a positive pole and a negative pole in use.
- the positive pole has a contact cap raised in the center, and the negative pole is usually a flat metal plate, which is used to form the negative pole of the battery.
- the existing rechargeable lithium batteries not limited to the 18650 type, all have safety requirements, that is, to prevent short-circuit conduction between the positive electrode and the negative electrode, and at the same time, it is also necessary to ensure the assembly stability of the protection circuit board to prevent the battery from being damaged. Dropping may cause deformation or damage, thereby impairing the function of the battery.
- the object of the present invention is to provide a rechargeable lithium battery device, aiming at the defects in the prior art, and providing a lithium battery device with a stable positive electrode structure.
- a rechargeable lithium battery device which includes a cylindrical battery core, a protective circuit board is provided on the positive pole of the battery core; wherein, a protective circuit board is provided between the positive pole of the cylindrical battery core and the positive pole of the protective circuit board
- a metal screw connection structure, the metal screw connection structure serves as the positive electrode of the protection circuit board and is electrically connected to the positive electrode of the electric core.
- the rechargeable lithium battery device wherein the metal screw connection structure includes a first metal connector, which is welded and fixed with the positive electrode of the protection circuit board; and a second metal connector, which is connected to the battery cell
- the positive electrode is welded and fixed; the first metal connector and the second metal connector can be screwed to match the corresponding thread.
- the rechargeable lithium battery device wherein, the first metal connector is a nut with an internal thread; the second metal connector is a bolt with an external thread.
- the second metal connector further includes a metal disc disposed under the bolt, which is used for welding and fixing with the positive end surface of the battery cell.
- the rechargeable lithium battery device wherein, the negative electrode of the protection circuit board is arranged on the side of the protection circuit board facing the battery cell, at a position close to the edge, and is connected to the battery cell through a metal conductor.
- the negative electrode area around the front end is electrically connected.
- the metal conductor is realized by a spring welded and fixed on the protective circuit board.
- an insulating sheet is provided between the positive and negative electrodes at the front end of the cell and the protective circuit board.
- insulating glue is arranged between the front end of the battery core, the positive pole and the negative pole, and the protective circuit board.
- a steel cylinder is provided outside the battery cell and the protection circuit board, which is used to cover and house the battery cell and the protection circuit board.
- the rechargeable lithium battery device provided by the present invention adopts the metal screw connection structure arranged on the positive circuit board of the battery corresponding to the positive pole of the battery cell, so that the positive cap and the circuit board are firmly connected to the battery cell. Form a brand-new lithium battery device.
- FIG. 1 is a schematic diagram of the internal structure of a preferred embodiment of the rechargeable lithium battery device of the present invention.
- Fig. 2 is a schematic exploded view of a preferred embodiment of the rechargeable lithium battery device of the present invention.
- FIG. 3 is a schematic cross-sectional view of a preferred embodiment of the rechargeable lithium battery device of the present invention.
- the present invention discloses a preferred embodiment of a rechargeable lithium battery device, especially for a cylindrical lithium battery device, such as a 18650 rechargeable lithium battery.
- a cylindrical cell 110 which cell is usually a standard industrial product, and its front end is a positive terminal, and its rear end is a negative terminal. Therefore, the front end of the battery cell is usually provided with a raised platform 111 in the center, which is the positive terminal, and the periphery and the outer wall are all connected to the negative terminal. Therefore, at the front end of the battery cell, An insulating glue area is pre-set between the central positive electrode platform and the peripheral negative electrode area 112 to isolate the positive electrode and the negative electrode of the battery to prevent short circuit.
- the first metal connecting part 131 of the present invention can be used as a nut, and the second metal connecting part 132 is correspondingly used as a bolt; or, the reverse setting method will not be repeated here.
- the first metal connecting piece and the second metal connecting piece can be made of copper material with better electrical conductivity, but are not limited to.
- an insulating structure needs to be provided between the positive pole, the negative pole and the protective circuit board of the battery cell, as shown in Figure 2 and Figure 3, an insulating sheet 140 is adopted, the The insulating sheet is provided with a first hole 141 in the center to allow the positive metal screw connection structure to pass through, and a second hole 142 is provided at the edge through which the negative metal conductor passes. Specifically, a semicircle or Has a certain opening. For the convenience of processing and assembly, especially for the convenience of industrial automation assembly, in a preferred embodiment of the present invention, it can also be processed by injecting insulating glue into the space where insulation is required.
- a steel cylinder 150 can also be provided outside the overall assembly structure of the battery cell 110 and the protective circuit board 120, which is used to carry out the overall structure of the lithium battery. Strengthen the protection, and a blocking wall 151 can also be provided at the front end of the steel cylinder 150, so that the entire assembly structure can be assembled into the steel cylinder 150 from the back to the front, and the steel cylinder 150 is set and accommodated.
- the battery cell 110 and the protection circuit board 120 can also be provided outside the overall assembly structure of the battery cell 110 and the protective circuit board 120, which is used to carry out the overall structure of the lithium battery.
- Strengthen the protection, and a blocking wall 151 can also be provided at the front end of the steel cylinder 150, so that the entire assembly structure can be assembled into the steel cylinder 150 from the back to the front, and the steel cylinder 150 is set and accommodated.
- the battery cell 110 and the protection circuit board 120 can also be provided outside the overall assembly structure of the battery cell 110 and the protective circuit board 120, which is used to carry out the overall structure
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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)
- Connection Of Batteries Or Terminals (AREA)
Abstract
本发明公开了一种可充电锂电池装置，其包括一圆柱形电芯，在所述电芯的正极设置有保护电路板；其中，在所述圆柱形电芯的正极与保护电路板的正极之间设置有金属螺接结构，所述金属螺接结构作为保护电路板的正极与所述电芯的正极导电连接。本发明可充电锂电池装置由于采用了在电池正极电路板上设置与电芯正极对应设置的金属螺接结构，实现了正极帽盖以及电路板的牢固与电芯连接，形成一全新的锂电池装置。
Description
本发明涉及一种可充电锂电池装置的改进，尤其涉及可充电锂电池的正极结构改进。
现有技术的可充电锂电池装置中，尤其是日常使用的18650型号，其所使用的电芯因为在工业生产中已经是普及和常用的电池单元，例如在电动汽车的可充电电池中，通常采用了大量的18650型号的电池电芯。
因此，该型号的电池电芯就可以形成普通消费者常用的18650型号电池，该型号电池为圆柱形电池，在正极通常设置有控制电路，并通过在电芯正极和负极之间进行连接，以通过保护电路板的控制管理，例如安全性，防止过充等等。
现有的可充电锂电池在使用中通常是设置在两端分别为正极和负极，正极具有在中央凸起的触点帽盖，在负极通常是平整的金属板，用来形成电池的负极。
但现有的可充电锂电池，不限于18650型号，都具有安全性的要求，也就是要防止正极与负极之前的短路导通，同时，还需要保证保护电路板的装配稳固性，防止电池在跌落时可能造成变形或损坏，由此形成对电池功能的损害。
因此，现有技术还存在有缺陷，还有待于改进和发展。
发明内容
本发明的目的在于提供一种可充电锂电池装置，针对现有技术存在的缺陷，提供稳固正极结构的锂电池装置。
本发明的技术方案如下：
一种可充电锂电池装置，其包括一圆柱形电芯，在所述电芯的正极设置有保护电路板；其中，在所述圆柱形电芯的正极与保护电路板的正极之间设置有金属螺接结构，所述金属螺接结构作为保护电路板的正极与所述电芯的正极导电连接。
所述的可充电锂电池装置，其中，所述金属螺接结构设置包括一第一金属连接件，与所述保护电路板的正极焊接固定；以及一第二金属连接件，与所述电芯的正极焊接固定；所述第一金属连接件与所述第二金属连接件对应螺纹匹配可螺接设置。
所述的可充电锂电池装置，其中，所述第一金属连接件为一具有内螺纹的螺母；所述第二金属连接件为一具有外螺纹的螺栓。
所述的可充电锂电池装置，其中，所述第二金属连接件还包括在所述螺栓下方设置的金属圆板，用于与所述电芯的正极端面焊接固定。
所述的可充电锂电池装置，其中，所述保护电路板的负极设置在所述保护电路板的朝向所述电芯一侧面上、靠边缘的位置，并通过金属导体与所述电芯的前端周边负极区域电性连接。
所述的可充电锂电池装置，其中，所述金属导体采用一焊接固定在所述保护电路板上的弹簧实现。
所述的可充电锂电池装置，其中，在所述电芯的前端正极与负极以及与所述保护电路板之间设置具有绝缘片。
所述的可充电锂电池装置，其中，在所述电芯的前端正极与负极以及与所述保护电路板之间设置充填有绝缘胶。
所述的可充电锂电池装置，其中，所述电芯及所述保护电路板外侧还设置有一钢筒，用于套设纳置所述电芯及所述保护电路板。
所述的可充电锂电池装置，其中，所述钢筒的筒体长度与所述电芯及所述保护电路板的组合长度一致，并且，在正极的端侧设置有挡壁；在所述钢筒与所述电芯外壁之间设置有绝缘胶膜。
本发明所提供的一种可充电锂电池装置，由于采用了在电池正极电路板上设置与电芯正极对应设置的金属螺接结构，实现了正极帽盖以及电路板的牢固与电芯连接，形成一全新的锂电池装置。
图1为本发明所述可充电锂电池装置较佳实施例内部结构示意图。
图2为本发明所述可充电锂电池装置的较佳实施例爆炸示意图。
图3为本发明所述可充电锂电池装置较佳实施例的剖视示意图。
以下对本发明的较佳实施例加以详细说明。
本发明公开了一种可充电锂电池装置的较佳实施例，尤其是针对圆柱形的锂电池装置，例如18650型号的可充电锂电池，在本发明的较佳实施例中，如图1所示的，首先具有一圆柱形的电芯110，该电芯通常是标准工业产品，其前端为正极端，后端为负极端，但因为电芯在生产过程中，外周壁连同负极端为一体的金属筒，因此，在电芯的前端通常是在中央位置设置为凸起的平台111，为正极端，而在周边及外壁皆是与负极端导通的，因此，在电芯的前端，中央的正极平台与周边的负极区域112之间预先设置有绝缘胶区域，用以隔离电池的正极和负极，以防止短路。
本发明所述可充电锂电池装置的较佳实施例中，所述电芯的正极还需要装配有保护电路板120，如图1和图2所示，保护电路板120本身设置有对锂电池电芯的管理控制电路，例如用于保证充放电过程的安全、防过充等等，其电路元件的装配一侧为朝向电芯正极的一侧。所述保护电路板120需要在电芯的充放电过程中对电流进行管理，因此，保护电路板120本身具有正极触点和负极触点，需要对应设置与电芯的正极和负极进行连接，通过保护电路板120的连接后，在所述保护电路板120的另一侧设置有正极凸起121，设置作为整个电池的正极(通常会设置有一正极帽盖)。
本发明较佳实施例的所述圆柱形电芯110的正极与所述保护电路板120的正极之间设置为金属螺接结构130，也就是所述保护电路板120的正极触点设置中央，对应所述电芯110正极端面的中央位置。而所述保护电路板120的负极触点设置在边缘，对应所述电芯110的正极端面的周边位置。所述金属螺接结构同时作为所述保护电路板的正极与所述电芯的正极导电连接的结构。
通过所述金属螺接结构，可以实现将所述保护电路板120牢靠的固定装配到所述电芯 110的正极上，并同时实现正极导通作用。在装配时，只需将保护电路板旋拧预定角度，并达到一定的紧度即可，方便了自动装配，而且装配后的锂电池牢固耐用。
进一步地，本发明所述可充电锂电池装置较佳实施例中，所述金属螺接结构还包括一第一金属连接件131，如图2和图3所示，其可以预先焊接固定在所述保护电路板120的中央正极触点位置上，并在所述第一金属连接件131上设置有内螺纹或外螺纹(图中示出的内螺纹)。以及，一第二金属连接件132，可以预先焊接固定在所述电芯110的正极凸台位置上，如图2或图3所示的，其具有与所述第一金属连接件131对应的外螺纹或内螺纹(图中示出的是外螺纹)，从而可以实现通过旋转所述保护电路板120实现与电芯110的装配，并保证正极的连接导通。
较佳的实施例中，本发明所述第一金属连接件131可以采用为一螺母，而所述第二金属连接件132对应采用为一螺栓；或者，相反的设置方式，在此不再赘述。所述第一金属连接件和第二金属连接件可以但不限于设置采用导电性能较好的铜质材料制成。
在所述第二金属连接件132的底部，还设置采用了一金属圆板133，该金属圆板133设置所述螺栓的底部，这样就可以扩大用于焊接固定的面积，以便在与所述电芯110的正极端面平台进行焊接时固定更牢靠。较好的是，可以设置所述金属圆板133的尺寸对应所述电芯110的正极平台111大小，由此既可以保证焊接固定的牢靠度，又可以保证产品的品质表现。
本发明所述可充电锂电池装置较佳实施例中，在所述保护电路板120的周边边缘位置，朝向所述电芯正极的一侧面上，设置其负极触点，并在该负极触点设置负极的金属导体122，例如镍带、导线或其他金属材质等，其下端与所述电性的前端周边之负极区域进行触接，从而形成负极导通。
较佳的实施例中，所述金属导体122可以采用一预先焊接固定在所述保护电路板上的弹簧134实现，所述弹簧由于具有一定弹性，可以设置其具有比所述保护电路板与所述电芯前端间隙略大的原始长度，这样就可以在装配后保证弹簧被压缩在电芯负极与保护电路板之间，从而保证负极的导通连接。所述弹簧较佳的是采用铜质材料。
所述弹簧设置可以采用多个，例如沿所述保护电路板的周边设置采用对称分布的两个 或三个或以上，并可以设置其中至少一个弹簧为所述保护电路板的负极连接，必要的情况下可以设置多个弹簧都可以并行连通所述电芯的负极，这样，多个弹簧既可以保证所述保护电路板装配后的稳固性，又可以多路保证负极的导通，而且多个导通的并行连接可以进一步降低保护电路的内阻，也即整个锂电池装置的内阻。
锂电池以及其电芯装置，由于其正极被负极包围，且处于一个端面上，因此锂电池经常出现的危险就是绝缘性能不够，或者经过碰撞或跌落后，导致绝缘性能下降，因而出现了短路现象。因此，本发明所述可充电锂电池装置中，在电芯的正极、负极以及保护电路板之间需要设置绝缘结构，如图2和图3所示的，采用了绝缘片140方式，所述绝缘片在中央设置有允许正极金属螺接结构穿过的第一孔部141，以及在边缘设置有所述负极金属导体穿过的第二孔部142，具体地可以靠近边缘形成半圆形或具有一定开口。为加工和装配的方便，尤其是便于工业自动化装配，本发明较佳实施例中，还可以采用向上述需要绝缘的位置空间内注入绝缘胶的方式进行加工。
本发明所述可充电锂电池装置较佳实施例中，在所述电芯110和所述保护电路板120整体装配结构的外侧还可以设置有一钢筒150，用来对整体锂电池的结构进行加强防护，并且在所述钢筒150的前端还可以设置有一挡壁151，从而可以将整个装配结构从后向前装配到所述钢筒150中，有所述钢筒150套设纳置所述电芯110和所述保护电路板120。
为防止所述锂电池装置的负极裸露过于靠近正极，在所述钢筒150的内侧与所述电芯外壁之间还设置有一绝缘胶膜160，该绝缘胶膜160可以完美地将整个电芯110的负极仅露出在电池的后端，而前端只露出正极(前端同样具有覆盖电芯前端面周边负极区域的伸出边缘161)，这样，可以保证整个电池的安全性更加提升。在所述保护电路板120的外侧，设置有一遮挡板170，用于包装美观以及绝缘，其中央具有对应的孔部，用于露出所述保护电路板120的正极凸起121。
本发明所述可充电锂电池装置较佳实施例中，在采用上述装配结构后，不仅方便工业化加工装配，而且装配后的牢靠度提升，并且其通过保护电路板后的电池内阻明显较现有技术下降，由此电池在使用过程中的额外损耗和发热程度也下降，因此，整个锂电池装置不仅安全，而且使用寿命必然更久。
应当理解的是，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本发明所附权利要求的保护范围。
Claims (10)
- 一种可充电锂电池装置，其包括一圆柱形电芯，在所述电芯的正极设置有保护电路板；其特征在于，在所述圆柱形电芯的正极与保护电路板的正极之间设置有金属螺接结构，所述金属螺接结构作为保护电路板的正极与所述电芯的正极导电连接。
- 根据权利要求1所述的可充电锂电池装置，其特征在于，所述金属螺接结构设置包括一第一金属连接件，与所述保护电路板的正极焊接固定；以及一第二金属连接件，与所述电芯的正极焊接固定；所述第一金属连接件与所述第二金属连接件对应螺纹匹配可螺接设置。
- 根据权利要求2所述的可充电锂电池装置，其特征在于，所述第一金属连接件为一具有内螺纹的螺母；所述第二金属连接件为一具有外螺纹的螺栓。
- 根据权利要求3所述的可充电锂电池装置，其特征在于，所述第二金属连接件还包括在所述螺栓下方设置的金属圆板，用于与所述电芯的正极端面焊接固定。
- 根据权利要求1至4任一所述的可充电锂电池装置，其特征在于，所述保护电路板的负极设置在所述保护电路板的朝向所述电芯一侧面上、靠边缘的位置，并通过金属导体与所述电芯的前端周边负极区域电性连接。
- 根据权利要求5所述的可充电锂电池装置，其特征在于，所述金属导体采用一焊接固定在所述保护电路板上的弹簧实现。
- 根据权利要求6所述的可充电锂电池装置，其特征在于，在所述电芯的前端正极与负极以及与所述保护电路板之间设置具有绝缘片。
- 根据权利要求7所述的可充电锂电池装置，其特征在于，在所述电芯的前端正极与负极以及与所述保护电路板之间设置充填有绝缘胶。
- 根据权利要求8所述的可充电锂电池装置，其特征在于，所述电芯及所述保护电路板外侧还设置有一钢筒，用于套设纳置所述电芯及所述保护电路板。
- 根据权利要求9所述的可充电锂电池装置，其特征在于，所述钢筒的筒体长度与所述电芯及所述保护电路板的组合长度一致，并且，在正极的端侧设置有挡壁；在所述钢筒与所述电芯外壁之间设置有绝缘胶膜。
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