WO2019178819A1 - 一种电池盖板的墩压方法及原材及电池盖板 - Google Patents

一种电池盖板的墩压方法及原材及电池盖板 Download PDF

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Publication number
WO2019178819A1
WO2019178819A1 PCT/CN2018/080095 CN2018080095W WO2019178819A1 WO 2019178819 A1 WO2019178819 A1 WO 2019178819A1 CN 2018080095 W CN2018080095 W CN 2018080095W WO 2019178819 A1 WO2019178819 A1 WO 2019178819A1
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Prior art keywords
workpiece
battery cover
raw material
curved
margin
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PCT/CN2018/080095
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English (en)
French (fr)
Inventor
王有生
丁朝阳
陆宾林
丁坤
胡兆明
魏新彦
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深圳市瑞德丰精密制造有限公司
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Priority to PCT/CN2018/080095 priority Critical patent/WO2019178819A1/zh
Publication of WO2019178819A1 publication Critical patent/WO2019178819A1/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
    • 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
    • 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

Definitions

  • the invention relates to the field of battery production, in particular to a method for pressing a battery cover and a raw material and a battery cover.
  • the top cover of the battery includes a cover sheet and a pole, and the quality of the top cover directly affects the performance of the battery.
  • the protrusions and the recesses and the holes are obtained by punching. Since the protrusions and the recesses and the holes of the battery cover are many, the height or depth of the protrusions and the recesses cannot be punched at the same time. There are many steps in the process of stamping and forming the battery cover plate, and it is necessary to repeatedly press the stamp to obtain a qualified battery cover workpiece, and in the process of punching, it is easy to change the internal properties of the material, and defective products appear.
  • the object of the present invention is to provide a method for pressing a battery cover and a raw material, a battery cover and a battery cover for the defects of the prior art.
  • the technical solution adopted by the invention is to design a method for pressing the battery cover, comprising the steps of:
  • the workpiece raw material is placed in the forming station of the pier pressing die, and the original material pier is pressed and formed, and the workpiece with the specified protrusion and depression is obtained once.
  • the step of performing a margin processing on the workpiece material is further included.
  • the remaining amount of machining can make the workpiece have a volume when the pier is pressed.
  • the margin processing is to make up the thickness variation of the original material. If the raw material is not processed by the original material, the original material will not be cut in the process of the pier. Because there is no margin in the raw material, the thickness will change when the mold is pulled or cut, and cracks will appear inside the workpiece. When the condition is serious, the cutting may occur. Or pull off the situation.
  • the step of performing the margin processing on the workpiece raw material comprises: bending the workpiece raw material under the adapted size of the pier pressing die.
  • the amount of bending is the remaining amount of the workpiece.
  • bending the workpiece material comprises bending the workpiece material into an arc shape.
  • the bending process obtains the curved workpiece raw material, and the curved workpiece raw material is convenient for processing, and at the same time, it is convenient to place the pier working position of the pier pressing die.
  • bending the workpiece material comprises bending the workpiece material into a wave shape.
  • the curved workpiece is obtained by bending, and the original surface of the wave-shaped workpiece has more curved faces, and the margin obtained is larger.
  • a material for a piercing method is provided, which is provided with a margin structure.
  • the original material has a margin structure, which can increase the volume of the raw material.
  • the thickness will change, and cracks will appear inside the workpiece. When it is cut or broken, it may happen.
  • the balance structure is a curved structure.
  • the curved structure can increase the margin of the raw material, and obtain the balance structure by bending, the utilization rate of the balance is high, and the utilization rate can reach more than 95%.
  • the raw material is a curved curved plate.
  • the workpiece of the curved curved structure is the curved part, and the curved workpiece is convenient for processing, and at the same time, it is convenient to place the pier station of the pier pressing die.
  • the material is a wavy curved plate.
  • the workpiece of the wavy curved structure has a balance of a wave-shaped curved portion, and the curved surface of the wavy workpiece has more curved faces, and the margin obtained is larger.
  • a battery cover is provided which is manufactured by any of the aforementioned piercing methods.
  • the battery cover plate is formed only by one pier pressing, and can be obtained by one punching, which has the advantages of simple production.
  • the invention Compared with the prior art, the invention has at least the following beneficial effects: the invention obtains a qualified workpiece by performing a pier pressing and a punching on the workpiece, and only two simple processes are needed in the whole process, and no need to repeat Stamping plates greatly reduce the production cost, and have the advantages of simple method, easy to grasp, and easy to promote.
  • FIG. 2 is a schematic structural view of a remaining material balance according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of another raw material balance according to an embodiment of the present invention.
  • FIG. 4 is a schematic view of a battery cover of an embodiment of the present invention.
  • the present invention provides a method for pressing a battery cover, comprising the steps of:
  • the raw material is sliced and preformed.
  • the workpiece raw material is placed in the forming station of the pier pressing die, and the original material pier is pressed and formed, and the workpiece with the specified protrusion and depression is obtained once.
  • the workpiece is subjected to a pier pressure and a punching to obtain a qualified workpiece.
  • a pier pressure and a punching to obtain a qualified workpiece.
  • the piercing method is used, and the material will have plastic flow, so the material utilization The rate is above 95%, which greatly reduces the production cost, and has the advantages of simple method, easy to grasp, and easy to promote.
  • the step S0 further includes the step of performing margin processing on the workpiece material.
  • the remaining amount of machining can make the workpiece have a volume when the pier is pressed.
  • the margin processing is to make up the thickness variation of the original material. If the raw material is not processed by the original material, the original material will not be cut in the process of the pier. Because there is no margin in the raw material, the thickness will change when the mold is pulled or cut, and cracks will appear inside the workpiece. When the condition is serious, the cutting may occur. Or pull off the situation.
  • the step of performing the margin processing on the workpiece raw material comprises: bending the workpiece raw material under the adapted size of the pier pressing mold.
  • the amount of bending is the remaining amount of the workpiece.
  • bending the workpiece stock comprises bending the workpiece stock into an arc shape.
  • the bending process obtains the curved workpiece raw material, and the curved workpiece raw material is convenient for processing, and at the same time, it is convenient to place the pier working position of the pier pressing die.
  • bending the workpiece stock comprises bending the workpiece stock into a wave shape.
  • the curved workpiece is obtained by bending, and the original surface of the wave-shaped workpiece has more curved faces, and the margin obtained is larger.
  • the raw material is processed by a margin, so that the original material has a margin of a curved structure, plastic flow can be generated during the pressure of the pier, and the raw material is placed into the pier pressing die.
  • the workpiece with the specified protrusions and depressions is pressed out using the piercing die pier. This process only needs to be done once, and the formed workpiece is not required to be repeated, and then the forming is punched. Similarly, this process It only takes one time to get a workpiece with holes.
  • a raw material for a piercing method is provided, which is provided with a margin structure.
  • the original material has a margin structure, which can increase the volume of the raw material.
  • the thickness will change, and cracks will appear inside the workpiece. When it is cut or broken, it may happen.
  • the margin structure is a curved structure.
  • the curved structure can increase the margin of the raw material, and obtain the balance structure by bending, the utilization rate of the balance is high, and the utilization rate can reach more than 95%.
  • the balance structure may also be a thickened structure, and increasing the thickness of the raw material can also increase the margin.
  • the raw material is a curved curved plate.
  • the workpiece of the curved curved structure 1 is made of a curved curved portion, and the curved workpiece is convenient for processing, and at the same time, it is convenient to be placed into the pier station of the pier pressing die.
  • the curved curved structure 1 may be a single-sided curved curved structure or a double-sided curved structure. In this embodiment, a double-sided curved curved structure is preferred.
  • the material is a wavy curved sheet.
  • the workpiece of the wave-shaped curved structure 2 has a balance of a wave-shaped curved portion, and the curved workpiece has a curved surface, and the margin obtained is large.
  • the undulating curved structure 2 may be a single-sided wavy curved structure or a double-sided wavy curved structure. In this embodiment, a double-sided wavy curved structure is preferred.
  • a battery cover 3 is provided, which is manufactured by any of the aforementioned piercing methods.
  • the battery cover 3 is only formed by one pier pressing, one punching can be obtained, the material utilization rate is above 95%, the production cost is reduced, and the production is simple and easy to grasp.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

本发明公开了一种电池盖板的墩压方法及原材及电池盖板，包括步骤：S0、将原材料切片成型；S1、将工件原材放入墩压模具的成型工位，原材墩压成型，一次得到具有指定凸起及凹陷的工件。S2、对成型的工件进行冲孔，一次得到带有指定孔的工件。本发明通过对工件进行一次墩压和一次冲孔，从而得到合格的工件，整个过程中，只有两个简单的工艺，不需要反复进行冲压板材，极大的降低了生产成本，具有方法简单，容易掌握，便于推广的优点。

Description

一种电池盖板的墩压方法及原材及电池盖板 技术领域
本发明涉及电池生产领域，尤其涉及一种电池盖板的墩压方法及原材及电池盖板。
背景技术
随着电子产品的日益发展，电池的运用越来越广泛，因为电子产品的小型化与便携化，需要一种稳定而又方便的电源。而电池正好因为其结构简单携带方便，充放电操作简便，不受外界气候和温度的影响，性能稳定可靠，在现代化的社会生活中的各个方面发挥着很大的作用。电池顶盖包括盖片以及极柱，顶盖的好坏直接影响电池的性能。
在电池盖板的生产中，较多采用冲压成型，冲压得到凸起和凹陷以及孔，因电池盖板的凸起和凹陷与孔较多，凸起与凹陷的高度或深度不同无法同时冲压，对电池盖板进行冲压成型的过程中步骤也较多，需要反复进行冲压，才能得到合格的电池盖板工件，且在冲压的过程中，容易改变材料内部性质，出现不良品。
发明内容
本发明的目的是针对上述现有技术存在的缺陷，提供一种电池盖板的墩压方法及原材及电池盖板及电池盖板。
本发明采用的技术方案是，设计一种电池盖板的墩压方法，包括步骤：
SO、将原材料切片预成型；
S1、将工件原材放入墩压模具的成型工位，原材墩压成型，一次得到具有指定凸起及凹陷的工件。
S2、对成型的工件进行冲孔，一次得到带有指定孔的工件。
优选的，所述步骤S0中，还包括对工件原材进行余量加工的步骤。余量加工可使工件在墩压时拥有的体积量，在墩压过程中，工件在模具内发生流动，厚度和结构发生变化，余量加工是为了补足原材厚度变化。如果不对原材进行余量加工，原材在墩压过程中，因为原材没有余量，被模具拉或剪时，均会使 厚度发生变化，工件内部出现裂痕，情况严重时，可能发生剪断或拉断的情况。
优选的，所述对工件原材进行余量加工的步骤包括：在墩压模具的适应尺寸下对工件原材进行弯曲加工。通过弯曲加工使工件原材拥有余量，工件原材边缘尺寸与墩压模具的尺寸适应的情况下，通过弯曲出来的量，就是工件原材的余量。
优选的，对工件原材进行弯曲加工包括：将工件原材弯曲为弧形。弯曲加工得到弧形工件原材，弧形工件原材方便加工，同时便于放置进墩压模具的墩工位。
优选的，对工件原材进行弯曲加工包括：将工件原材弯曲为波浪形。弯曲加工得到波浪形工件原材，波浪形工件原件的弯曲面较多，获得的余量较大。
提供一种用于墩压方法的原材，所述原材设置有余量结构。原材拥有余量结构，可以增加原材的体积量，在墩压过程中，如果原材没有余量，在被模具拉或剪时，均会使厚度发生变化，工件内部出现裂痕，情况严重时，可能发生剪断或拉断的情况。
优选的，所述余量结构为弯曲结构。弯曲结构可以增加原材的余量，且通过弯曲得到余量结构，余量利用率高，利用率可达95％以上。
优选的，所述原材为弧形弯曲的板材。弧形弯曲结构的工件原材，余量为弧形弯曲部，弧形工件原材方便加工，同时便于放置进墩压模具的墩工位。
优选的，所述原材为波浪形弯曲的板材。所述波浪形弯曲结构的工件原材，余量为波浪形弯曲部，波浪形工件原件的弯曲面较多，获得的余量较大。
提供一种电池盖板，所述电池盖板通过前述任一墩压方法制造而成。在制造生产过程中，所述电池盖板只经过一次墩压成型，一次冲孔就可得到，具有生产简单的优点。
与现有技术相比，本发明至少具有以下有益效果：本发明通过对工件进行一次墩压和一次冲孔，从而得到合格的工件，整个过程中，只有两个简单的工艺，不需要反复进行冲压板材，极大的降低了生产成本，具有方法简单，容易掌握，便于推广的优点。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要 使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例的总体流程图；
图2为本发明实施例的一种原材余量结构示意图；
图3为本发明实施例的另一种原材余量结构示意图；
图4为本发明实施例的电池盖板示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本如图1所示，本发明提出了一种电池盖板的墩压方法，包括步骤：
S0、将原材料切片预成型。
S1、将工件原材放入墩压模具的成型工位，原材墩压成型，一次得到具有指定凸起及凹陷的工件。
S2、对成型的工件进行冲孔，一次得到带有指定孔的工件。
对工件进行一次墩压和一次冲孔，从而得到合格的工件，整个过程中，只有两个简单的工艺，不需要反复进行冲压板材，使用墩压的方法，材料会产生塑性流动，因此材料利用率在95％以上，极大的降低了生产成本，具有方法简单，容易掌握，便于推广的优点。
在本发明实施例中，所述步骤S0中，还包括对工件原材进行余量加工的步骤。余量加工可使工件在墩压时拥有的体积量，在墩压过程中，工件在模具内发生流动，厚度和结构发生变化，余量加工是为了补足原材厚度变化。如果不对原材进行余量加工，原材在墩压过程中，因为原材没有余量，被模具拉或剪时，均会使厚度发生变化，工件内部出现裂痕，情况严重时，可能发生剪断或拉断的情况。
在本发明实施例中，所述对工件原材进行余量加工的步骤包括：在墩压模 具的适应尺寸下对工件原材进行弯曲加工。通过弯曲加工使工件原材拥有余量，工件原材边缘尺寸与墩压模具的尺寸适应的情况下，通过弯曲出来的量，就是工件原材的余量。
在本发明实施例中，对工件原材进行弯曲加工包括：将工件原材弯曲为弧形。弯曲加工得到弧形工件原材，弧形工件原材方便加工，同时便于放置进墩压模具的墩工位。
在本发明实施例中，对工件原材进行弯曲加工包括：将工件原材弯曲为波浪形。弯曲加工得到波浪形工件原材，波浪形工件原件的弯曲面较多，获得的余量较大。
具体的，在电池盖板的墩压方法中，首先对原材进行余量加工，使原材具有弯曲结构的余量，可在墩压过程中产生塑性流动，将原材放入墩压模具的墩压工位上，使用墩压模具墩压出具有指定凸起和凹陷的工件，这个过程只需要一次，得到成型工件，不需要重复进行，然后对成型的进行冲孔，同样，这个过程只需要一次，得到带孔的工件。
如图2－3所示，提供一种用于墩压方法的原材，所述原材设置有余量结构。原材拥有余量结构，可以增加原材的体积量，在墩压过程中，如果原材没有余量，在被模具拉或剪时，均会使厚度发生变化，工件内部出现裂痕，情况严重时，可能发生剪断或拉断的情况。
在本发明实施例中，所述余量结构为弯曲结构。弯曲结构可以增加原材的余量，且通过弯曲得到余量结构，余量利用率高，利用率可达95％以上。
当然，所述余量结构也可以是加厚结构，增加原材的厚度也能增加余量。
在本发明实施例中，所述原材为弧形弯曲的板材。弧形弯曲结构1的工件原材，余量为弧形弯曲部，弧形工件原材方便加工，同时便于放置进墩压模具的墩工位。
进一步的，所述弧形弯曲结构1可以是单面弧形弯曲结构，也可以双面弧形结构，本实施例中优选为双面弧形弯曲结构。
在本发明实施例中，所述原材为波浪形弯曲的板材。所述波浪形弯曲结构2的工件原材，余量为波浪形弯曲部，波浪形工件原材的弯曲面较多，获得的余量较大。
进一步的，所述波浪形弯曲结构2可以是单面波浪形弯曲结构，也可以双面波浪形弯曲结构，本实施例中优选为双面波浪形弯曲结构。
如图4所示，提供一种电池盖板3，所述电池盖板3通过前述任一墩压方法制造而成。在制造生产过程中，所述电池盖板3只经过一次墩压成型，一次冲孔就可得到，材料利用率在95％以上，降低了生产成本，具有生产简单，容易掌握的优点。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种电池盖板的墩压方法，其特征在于，包括步骤：
    S0、原材料切片预成型；
    S1、将工件原材放入墩压模具的成型工位，原材墩压成型，一次得到具有指定凸起及凹陷的工件；
    S2、对成型的工件进行冲孔，一次得到带有指定孔的工件。
  2. 如权利要求1所述的电池盖板的墩压方法，其特征在于，所述步骤S0中，包括对工件原材进行余量加工的步骤。
  3. 如权利要求2所述的电池盖板的墩压方法，其特征在于，所述对工件原材进行余量加工的步骤包括：
    在墩压模具的适应尺寸下对工件原材进行弯曲加工。
  4. 如权利要求3所述的电池盖板的墩压方法，其特征在于，对工件原材进行弯曲加工包括：将工件原材弯曲为弧形。
  5. 如权利要求3所述的电池盖板的墩压方法，其特征在于，对工件原材进行弯曲加工包括：将工件原材弯曲为波浪形。
  6. 一种用于权利要求1－5中电池盖板的墩压方法的原材，其特征在于，所述原材设置有余量结构。
  7. 如权利要求6所述的原材，其特征在于，所述余量结构为弯曲结构。
  8. 如权利要求7所述的原材，其特征在于，所述原材为弧形弯曲的板材。
  9. 如权利要求7所述的原材，其特征在于，所述原材为波浪形弯曲的板材。
  10. 一种电池盖板，其特征在于，通过如权利要求1－5任一所述的方法制造而成。
PCT/CN2018/080095 2018-03-22 2018-03-22 一种电池盖板的墩压方法及原材及电池盖板 WO2019178819A1 (zh)

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Publication number Priority date Publication date Assignee Title
JP2002239643A (ja) * 2001-02-21 2002-08-27 Bl Engineering:Kk 密封型電池用封口蓋の加工方法
CN102744319A (zh) * 2012-06-29 2012-10-24 袁志龙 一种冷冲压辅具及其冲压工艺
CN105070853A (zh) * 2015-08-10 2015-11-18 宝鸡市荣兴金属材料有限公司 一种高性能柱式锂亚电池用盖板及其加工方法
CN106964664A (zh) * 2017-05-09 2017-07-21 广东欧珀移动通信有限公司 壳体加工工艺、壳体及电子设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002239643A (ja) * 2001-02-21 2002-08-27 Bl Engineering:Kk 密封型電池用封口蓋の加工方法
CN102744319A (zh) * 2012-06-29 2012-10-24 袁志龙 一种冷冲压辅具及其冲压工艺
CN105070853A (zh) * 2015-08-10 2015-11-18 宝鸡市荣兴金属材料有限公司 一种高性能柱式锂亚电池用盖板及其加工方法
CN106964664A (zh) * 2017-05-09 2017-07-21 广东欧珀移动通信有限公司 壳体加工工艺、壳体及电子设备

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