CN205508961U - Lithium ion power battery - Google Patents
Lithium ion power battery Download PDFInfo
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- CN205508961U CN205508961U CN201620144273.8U CN201620144273U CN205508961U CN 205508961 U CN205508961 U CN 205508961U CN 201620144273 U CN201620144273 U CN 201620144273U CN 205508961 U CN205508961 U CN 205508961U
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 22
- 239000003792 electrolyte Substances 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 13
- 238000003466 welding Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- 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
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- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
本实用新型适用于一种锂离子动力电池，包括外壳、盖帽、电芯、正极汇流体、负极汇流体以及电解液，所述电芯和所述电解液通过所述盖帽密封在所述外壳内，所述正极汇流体和所述负极汇流体分别与所述电芯的正、负极相连接，所述正、负极汇流体上分别具有正极柱和负极柱，所述外壳为一端开口的壳体，所述壳体的底部开设有通孔。这样可减少盖帽使用量，降低电池壳体成本和壳体重量，减少焊接次数，正极与壳体相固定保证了电芯的固定，避免了电芯的轴向窜动；另外，正极与壳体相固定，还使整个外壳作为正极、带正电，增大过流能力和散热面积，大大提高了电池的使用性能。
The utility model is applicable to a lithium-ion power battery, which includes a casing, a cap, an electric core, a positive electrode collector, a negative electrode collector and an electrolyte, and the electric core and the electrolyte are sealed in the casing through the cap , the positive collector and the negative collector are respectively connected to the positive and negative poles of the battery, the positive and negative collectors have positive posts and negative posts respectively, and the shell is a shell with one end open , the bottom of the housing is provided with a through hole. This can reduce the use of caps, reduce the cost of the battery case and the weight of the case, and reduce the number of welding times. The positive electrode and the case are fixed to ensure the fixation of the battery cell and avoid the axial movement of the battery cell; in addition, the positive electrode and the case The phase is fixed, and the whole shell is used as the positive electrode, which is positively charged, which increases the overcurrent capacity and heat dissipation area, and greatly improves the performance of the battery.
Description
技术领域technical field
本实用新型涉及锂离子电池技术领域，尤其涉及一种锂离子动力电池。The utility model relates to the technical field of lithium ion batteries, in particular to a lithium ion power battery.
背景技术Background technique
动力电池的性能对新能源汽车的发展起着至关重要的作用。新能源车动力电池应具有比能量高、比功率大、自放电少、使用寿命长及安全性好等特性。锂电池因为具有能量密度高、放电功率大、自放电小和寿命长等优点，而成为电动汽车电池发展的方向。The performance of power batteries plays a vital role in the development of new energy vehicles. New energy vehicle power batteries should have the characteristics of high specific energy, high specific power, less self-discharge, long service life and good safety. Lithium batteries have become the development direction of electric vehicle batteries because of their advantages such as high energy density, large discharge power, small self-discharge and long life.
圆柱形锂电池因其采用卷绕式加工，结构简单，易于实现自动化，生产效率高，但目前圆柱电池多采用单或多极耳工艺、间隙涂布方式，此过程工序复杂、耗时长、生产效率低下。另外，由于极耳结构过流面积有限，造成电池内阻较大、大倍率温升较高、极耳位易析锂等弊端。Cylindrical lithium batteries have a simple structure, are easy to automate, and have high production efficiency because they are processed by winding. low efficiency. In addition, due to the limited flow area of the tab structure, there are disadvantages such as large internal resistance of the battery, high temperature rise at high rates, and easy lithium deposition at the tab position.
全极耳工艺是一种采用一端留白、连续涂布的工艺，留白端作为极耳，提高了极片涂布一致性，大大降低了电池内阻和温升，提升了电池在大倍率充放电下的表现。在组装电池时，需要折弯极耳，在实现自动化时工序繁杂，折弯极耳需要包胶与壳体绝缘，工序复杂，存在电芯窜动的隐患，极耳边缘易与壳体刮擦碰壁，从而短路，影响电池性能的发挥和安全性能。The full-tab process is a process that uses one end to be left blank and continuously coated. The blank end is used as a tab, which improves the coating consistency of the pole piece, greatly reduces the internal resistance and temperature rise of the battery, and improves the battery at a large rate. Performance under charging and discharging. When assembling the battery, it is necessary to bend the tabs. The process is complicated when the automation is realized. The folding tabs need to be insulated from the shell with glue. Hitting a wall, resulting in a short circuit, affecting the performance and safety of the battery.
另外，现常用的全极耳电池工艺在实际的生产中使用的铝壳壳体多为两端开口、两个盖帽，盖帽成本高，并且盖帽占整个壳体重量的比重较大，存在电池整体能量密度降低、装配工艺复杂、效率慢等问题。In addition, the aluminum shell shells used in the actual production of the commonly used all-tab battery technology are mostly open at both ends and two caps. The cost of the caps is high, and the caps account for a large proportion of the weight of the entire shell. Reduced energy density, complex assembly process, slow efficiency and other issues.
实用新型内容Utility model content
本实用新型所要解决的技术问题在于提供一种可避免电芯窜动，并且安全性高、安装方便的锂离子动力电池。The technical problem to be solved by the utility model is to provide a lithium-ion power battery which can avoid the movement of the battery core, has high safety and is easy to install.
本实用新型是这样实现的一种锂离子动力电池，包括外壳、盖帽、电芯、正极汇流体、负极汇流体以及电解液，所述电芯和所述电解液通过所述盖帽密封在所述外壳内，所述正极汇流体和所述负极汇流体分别与所述电芯的正、负极相连接，所述正、负极汇流体上分别具有正极柱和负极柱，所述外壳为一端开口的壳体，所述壳体的底部开设有通孔，所述盖帽密封在所述开口处，所述负极柱穿过所述盖帽，并与所述盖帽相固定，所述正极柱穿过所述通孔，并与所述外壳相固定。The utility model is a lithium-ion power battery realized in this way, comprising a casing, a cap, an electric core, a positive electrode collector, a negative electrode collector and an electrolyte, and the electric core and the electrolyte are sealed in the In the housing, the positive collector and the negative collector are respectively connected to the positive and negative poles of the cell, and the positive and negative collectors are respectively provided with a positive column and a negative column, and the housing is open at one end. A casing, the bottom of the casing is provided with a through hole, the cap is sealed at the opening, the negative pole passes through the cap and is fixed with the cap, the positive pole passes through the through holes, and is fixed with the housing.
进一步地，所述正极汇流体还包括正极汇流部，所述正极汇流部与所述电芯正极电连接，所述正极柱位于所述正极汇流部上。Further, the positive current collector further includes a positive current collector, the positive current collector is electrically connected to the positive electrode of the cell, and the positive column is located on the positive current collector.
进一步地，所述正极柱位于所述正极汇流部的中部。Further, the positive column is located in the middle of the positive confluence part.
进一步地，所述负极汇流体还包括负极汇流部和电连部，所述负极汇流部与所述电芯负极电连接，所述电连部的一端安装在所述负极汇流部上，其另一端与所述负极柱电连接。Further, the negative current collector also includes a negative current collector and an electrical connection part, the negative current collector is electrically connected to the negative electrode of the cell, one end of the electrical connection part is installed on the negative current collector, and the other One end is electrically connected with the negative pole.
进一步地，所述电连部位于所述负极汇流部的中部。Further, the electrical connection part is located in the middle of the negative electrode bus part.
进一步地，所述电连部由一块导电板折弯形成第一、第二接触面，所述第一接触面与所述负极汇流部电接触，所述第二接触面与所述负极柱电接触。Further, the electrical connection part is bent by a conductive plate to form a first contact surface and a second contact surface, the first contact surface is in electrical contact with the negative electrode bus part, and the second contact surface is electrically contacted with the negative electrode post. touch.
进一步地，所述负极柱上开设有用于灌入所述电解液的注液孔，所述第二接触面上相对应的开设有供所述电解液通过的过流孔。Further, a liquid injection hole for pouring the electrolyte is opened on the negative pole, and an overflow hole for the electrolyte to pass is correspondingly opened on the second contact surface.
进一步地，所述负极柱内部开设有螺纹孔，所述注液孔位于所述螺纹孔的底部。Further, a threaded hole is opened inside the negative pole, and the liquid injection hole is located at the bottom of the threaded hole.
进一步地，所述负极汇流体还包括负极汇流部，所述负极汇流部与所述电芯负极电连接，所述负极柱位于所述负极汇流部上，所述汇流部为碗状汇流片。Further, the negative collector also includes a negative collector, the negative collector is electrically connected to the negative electrode of the cell, the negative post is located on the negative collector, and the collector is a bowl-shaped collector.
进一步地，所述负极柱内部开设有螺纹孔，所述正极柱外表面设有与所述螺纹孔相配合的螺纹。Further, a threaded hole is provided inside the negative pole, and a thread matched with the threaded hole is provided on the outer surface of the positive pole.
与现有技术相比，本实用新型的一种锂离子动力电池的外壳为一端开口的壳体，盖帽密封在开口处，这样可减少盖帽使用量，降低电池壳体成本和壳体重量，减少焊接次数和时间。此外，上述锂离子动力电池的正极柱穿过通孔，并与外壳相固定，可起到固定电芯、避免电芯轴向窜动的作用；同时，还可使整个外壳作为正极、带正电，增大过流能力和散热面积，大大提高了电池的使用性能。Compared with the prior art, the shell of a lithium-ion power battery of the present invention is a shell with one end open, and the cap is sealed at the opening, which can reduce the usage of the cap, reduce the cost of the battery shell and the weight of the shell, and reduce the Welding times and times. In addition, the positive pole of the above-mentioned lithium-ion power battery passes through the through hole and is fixed with the shell, which can fix the battery core and prevent the axial movement of the battery core; Electricity, increase the flow capacity and heat dissipation area, greatly improving the performance of the battery.
附图说明Description of drawings
图1是本实用新型实施例提供的锂离子动力电池的剖视示意图。Fig. 1 is a schematic cross-sectional view of a lithium-ion power battery provided by an embodiment of the present invention.
图2是图1中正极汇流体的立体示意图。FIG. 2 is a schematic perspective view of the positive collector in FIG. 1 .
图3是图1中负极汇流体的剖视示意图。FIG. 3 is a schematic cross-sectional view of the negative collector in FIG. 1 .
图4是图3中负极汇流部和连接部的立体结构示意图。FIG. 4 is a schematic perspective view of the negative electrode converging part and the connecting part in FIG. 3 .
具体实施方式detailed description
为了使本实用新型所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.
如图1所示，为本实用新型的一较佳实施例的一种锂离子动力电池，包括外壳10、盖帽20、电芯30、正极汇流体40、负极汇流体50以及电解液(图中未示出)。As shown in Figure 1, it is a kind of lithium-ion power battery of a preferred embodiment of the present utility model, comprises shell 10, cap 20, electric core 30, positive electrode sink body 40, negative electrode sink body 50 and electrolyte (in the figure not shown).
外壳10为一端开口的壳体，盖帽20密封在开口处。电芯30和电解液通过盖帽20密封在外壳10内，正极汇流体40和负极汇流体50分别与电芯30的正、负极相连接，正、负极汇流体40、50上分别具有正极柱41和负极柱51。壳体的底部开设有通孔11，负极柱51穿过盖帽20，并与盖帽20相固定，正极柱41穿过通孔11，并通过激光焊接与外壳10相固定。优选地，正极汇流体40、正极柱41以及外壳10为铝或铝合金材料；负极汇流体50为铜镀镍材料，负极柱51为铜或铜镀镍材料。The casing 10 is a casing with an opening at one end, and a cap 20 is sealed at the opening. The battery cell 30 and the electrolyte are sealed in the casing 10 through the cap 20, the positive electrode collector body 40 and the negative electrode collector body 50 are respectively connected to the positive and negative electrodes of the battery cell 30, and the positive electrode collector body 40 and the negative electrode collector body 50 respectively have a positive pole column 41 and negative pole 51. The bottom of the case is provided with a through hole 11 , the negative pole 51 passes through the cap 20 and is fixed with the cap 20 , the positive pole 41 passes through the through hole 11 and is fixed with the casing 10 by laser welding. Preferably, the positive collector 40 , the positive pole 41 and the casing 10 are made of aluminum or aluminum alloy; the negative collector 50 is made of nickel-plated copper, and the negative pole 51 is made of copper or nickel-plated copper.
请一同参考如图2和3，负极柱51内部开设有螺纹孔511，正极柱41外表面设有与螺纹孔511相配合的螺纹。电池连接时，一个电池的正极柱41与另一个电池的负极柱51通过螺纹连接，这样避免使用焊接，简化工序，方便安装。盖帽20上还设置有用于防止电池爆炸的防爆阀21。当电池由于短路内部压力增大到安全阀值时，防爆阀21内部的隔膜会破裂，释放电池内的压力，避免电池爆炸。Please refer to FIGS. 2 and 3 together. The negative pole 51 is provided with a threaded hole 511 inside, and the outer surface of the positive pole 41 is provided with threads matching the threaded hole 511 . When the batteries are connected, the positive pole 41 of one battery is connected with the negative pole 51 of the other battery through threads, which avoids the use of welding, simplifies the process, and facilitates installation. An explosion-proof valve 21 for preventing battery explosion is also arranged on the cap 20 . When the internal pressure of the battery increases to the safety threshold due to a short circuit, the diaphragm inside the explosion-proof valve 21 will rupture to release the pressure in the battery and prevent the battery from exploding.
正极汇流体40还包括呈圆形的正极汇流部42，正极柱41位于正极汇流部42的中部。负极汇流体50还包括呈圆形的负极汇流部52和电连部53，电连部53的一端安装在负极汇流部52的中部，其另一端与负极柱51电连接。电连部53安装在负极汇流部52的中部，可降低电连部53与外壳10接触的概率，提高电池的安全性。当然，负极汇流体50还可以包括负极汇流部52，负极汇流部52与电芯30负极电连接，负极柱51位于负极汇流部52上，汇流部52为碗状汇流片。The positive electrode collector 40 also includes a circular positive electrode collector 42 , and the positive column 41 is located in the middle of the positive electrode collector 42 . The negative collector 50 also includes a circular negative collector 52 and an electrical connection 53 , one end of the electrical connector 53 is installed in the middle of the negative collector 52 , and the other end is electrically connected to the negative post 51 . The electrical connection part 53 is installed in the middle of the negative electrode confluence part 52, which can reduce the probability of contact between the electrical connection part 53 and the casing 10, and improve the safety of the battery. Of course, the negative current collector 50 may also include a negative current collector 52 , which is electrically connected to the negative electrode of the cell 30 , and the negative pole 51 is located on the negative current collector 52 , which is a bowl-shaped busbar.
电芯30由一端留空白铝箔的正极极片、一端留空白铜箔的负极极片和隔膜卷绕而成。空白箔材分别在正、负极的两端，揉平至一定厚度后的空白箔材作为全极耳分别对应焊接上正极汇流体40和负极汇流体50，负极汇流体50焊接后包胶带与壳体10绝缘。这样电芯30与正极汇流体40和负极汇流体50固定在一起形成模块，有利于电池的快速安装。The battery cell 30 is formed by winding a positive pole piece with a blank aluminum foil at one end, a negative pole piece with a blank copper foil at one end, and a separator. Blank foil materials are placed on both ends of the positive and negative electrodes respectively, and the blank foil materials after kneading to a certain thickness are used as full tabs to be respectively welded on the positive electrode collector body 40 and the negative electrode collector body 50, and the negative electrode collector body 50 is covered with tape and shell after welding. Body 10 is insulated. In this way, the battery cell 30 is fixed together with the positive electrode collector 40 and the negative electrode collector 50 to form a module, which is beneficial to the rapid installation of the battery.
如图4所示，电连部53由一块导电板折弯形成第一、第二接触面531、532，第一接触面531与负极汇流部52电接触，第二接触面532与负极柱51电接触。负极柱51上螺纹孔511的底部开设有用于灌入电解液的注液孔512，第二接触面532上相对应的开设有用于电解液通过的过流孔533。当电池封装好后，可以通过注液孔512和过流孔533向外壳10内灌入电解液，灌好后通过钢珠将注液孔512封口。在本实施例中，过流孔533为长条形孔，并比注液孔512孔径大，这样能弥补注液孔512与过流孔533之间的安装误差，防止注液孔512被电连部53阻挡。As shown in Figure 4, the electrical connection part 53 is bent by a conductive plate to form the first and second contact surfaces 531, 532, the first contact surface 531 is in electrical contact with the negative electrode bus part 52, and the second contact surface 532 is in electrical contact with the negative pole column 51. electrical contact. The bottom of the threaded hole 511 on the negative pole 51 is provided with a liquid injection hole 512 for filling the electrolyte, and the second contact surface 532 is correspondingly provided with an overflow hole 533 for the electrolyte to pass through. After the battery is packaged, the electrolyte can be poured into the casing 10 through the liquid injection hole 512 and the flow hole 533, and the liquid injection hole 512 is sealed with a steel ball after filling. In this embodiment, the flow hole 533 is an elongated hole with a larger diameter than the liquid injection hole 512, which can compensate for the installation error between the liquid injection hole 512 and the flow hole 533, and prevent the liquid injection hole 512 from being damaged by the electric current. Even part 53 blocks.
本实用新型的锂离子动力电池的组装工艺可参考如下：The assembling process of the lithium-ion power battery of the present utility model can refer to as follows:
1.电芯30卷绕：正极极片、负极极片和隔膜卷绕成圆柱形，电芯30外表包宽胶带；1. Winding of the battery core 30: the positive pole piece, the negative pole piece and the diaphragm are wound into a cylindrical shape, and the battery core 30 is wrapped with wide tape;
2.揉平：卷绕好的电芯30端面揉平至一定的厚度；2. Knead flat: Knead the end surface of the wound battery 30 to a certain thickness;
3.正极端面焊接正极汇流体40，负极端面焊接负极汇流体50；3. The surface of the positive terminal is welded with a positive collector body 40, and the surface of the negative terminal is welded with a negative collector body 50;
4.入中心管(图中未标出)：中心管插入电芯30中心轴向；4. Insert the central tube (not shown in the figure): the central tube is inserted into the central axis of the battery cell 30;
5.负极汇流体50与负极盖帽20超声焊接；5. The negative electrode collector 50 and the negative electrode cap 20 are ultrasonically welded;
6.电芯30入壳：正极汇流体40上的引流正极柱41与圆管外壳10上的通孔11镶嵌，正极柱41与通孔11结合部位激光焊接密封；负极汇流体50与圆管外壳10嵌合，结合部位用激光焊接密封；6. The battery cell 30 is put into the shell: the drainage positive column 41 on the positive electrode sink body 40 is inlaid with the through hole 11 on the round tube shell 10, and the joint part of the positive electrode column 41 and the through hole 11 is laser welded and sealed; the negative electrode sink body 50 is connected to the round tube The casing 10 is fitted, and the joint is sealed by laser welding;
7.注液：通过注液孔512注入电解液，静置。7. Liquid injection: inject electrolyte solution through the liquid injection hole 512, and let stand.
8.封口：将钢珠放置在注液孔512处，压力敲击钢珠使电池完成密封。8. Sealing: place the steel ball at the liquid injection hole 512, and tap the steel ball with pressure to complete the sealing of the battery.
与现有技术相比，本实用新型的锂离子动力电池的外壳10为一端开口的壳体，这样可减少盖帽20使用量，降低电池壳体成本和壳体重量，减少焊接次数和时间。正极柱41穿过通孔11，并与外壳10相固定，从而可起到固定电芯30、防止电芯30轴向窜动的作用；另外，正极柱41与壳体10相固定，还使整个外壳10作为正极、带正电，从而增大过流能力和散热面积，大大提高了电池的使用性能。Compared with the prior art, the casing 10 of the lithium-ion power battery of the present invention is a casing with one end open, which can reduce the usage of the cap 20, reduce the cost and weight of the battery casing, and reduce welding times and time. The positive pole 41 passes through the through hole 11 and is fixed with the casing 10, so as to fix the battery cell 30 and prevent the battery cell 30 from moving axially; The entire casing 10 is used as the positive pole and is positively charged, thereby increasing the flow capacity and heat dissipation area, and greatly improving the performance of the battery.
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920703A (en) * | 2017-05-12 | 2017-07-04 | 成都凹克新能源科技有限公司 | A kind of ultracapacitor |
| CN107968165A (en) * | 2017-11-13 | 2018-04-27 | 泰兴市振兴电子有限公司 | A kind of screw-type lithium battery cap |
| CN111834557A (en) * | 2020-08-10 | 2020-10-27 | 惠州亿纬锂能股份有限公司 | Electronic device and method of manufacturing the same |
| CN113517519A (en) * | 2021-03-19 | 2021-10-19 | 天津荣盛盟固利新能源科技有限公司 | Bus bar structure and welding method |
| CN115986192A (en) * | 2023-02-01 | 2023-04-18 | 合肥国轩高科动力能源有限公司 | Lithium Ion Battery |
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2016
- 2016-02-25 CN CN201620144273.8U patent/CN205508961U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920703A (en) * | 2017-05-12 | 2017-07-04 | 成都凹克新能源科技有限公司 | A kind of ultracapacitor |
| CN106920703B (en) * | 2017-05-12 | 2019-06-28 | 成都凹克新能源科技有限公司 | A kind of supercapacitor |
| CN107968165A (en) * | 2017-11-13 | 2018-04-27 | 泰兴市振兴电子有限公司 | A kind of screw-type lithium battery cap |
| CN111834557A (en) * | 2020-08-10 | 2020-10-27 | 惠州亿纬锂能股份有限公司 | Electronic device and method of manufacturing the same |
| CN111834557B (en) * | 2020-08-10 | 2023-09-01 | 惠州亿纬锂能股份有限公司 | Electronic device and manufacturing method thereof |
| CN113517519A (en) * | 2021-03-19 | 2021-10-19 | 天津荣盛盟固利新能源科技有限公司 | Bus bar structure and welding method |
| CN113517519B (en) * | 2021-03-19 | 2023-02-17 | 天津荣盛盟固利新能源科技有限公司 | Welding method |
| CN115986192A (en) * | 2023-02-01 | 2023-04-18 | 合肥国轩高科动力能源有限公司 | Lithium Ion Battery |
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