WO2020192164A1 - 储能蓄电池极柱密封性能检测装置及其检测方法 - Google Patents

储能蓄电池极柱密封性能检测装置及其检测方法 Download PDF

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Publication number
WO2020192164A1
WO2020192164A1 PCT/CN2019/121402 CN2019121402W WO2020192164A1 WO 2020192164 A1 WO2020192164 A1 WO 2020192164A1 CN 2019121402 W CN2019121402 W CN 2019121402W WO 2020192164 A1 WO2020192164 A1 WO 2020192164A1
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terminal
sealing performance
sealant
sealing
energy storage
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PCT/CN2019/121402
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English (en)
French (fr)
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李军
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浙江天能电池(江苏)有限公司
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Publication of WO2020192164A1 publication Critical patent/WO2020192164A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point

Definitions

  • the invention relates to the field of battery manufacturing, in particular to a detection device and a detection method for the sealing performance of an energy storage battery pole.
  • the quality problem of the acid corrosion of the terminal often occurs.
  • the acid corrosion of the terminal is caused by the incomplete sealing between the terminal and the terminal groove, which affects the sealing performance between the terminal and the terminal groove.
  • the factor is the quality of the sealant used to seal the terminal groove and the terminal. Poor quality of the sealant will lead to poor bonding between the inner wall of the terminal groove and the outer wall of the terminal, making the seal between the two poor , Eventually lead to acid corrosion of the terminal; another reason that affects the sealing performance between the terminal and the terminal groove is due to the irregular operation of the staff, and the excessive screwing force during the charging process causes the sealant capillary phenomenon, and the sealant capillary phenomenon appears It will affect the sealing performance between the terminal and the terminal groove, resulting in defective products.
  • the present invention provides an energy storage battery terminal sealing performance testing device and testing method thereof.
  • the device and method can effectively test and determine whether the quality of the sealant meets the standard, and at the same time can find out
  • the real reason for the corrosion of the terminals is to effectively solve the problem of the corrosion of the terminals and reduce the production cost.
  • the present invention provides a device for detecting the sealing performance of the pole post of an energy storage battery.
  • a cylinder connected with a control valve is fixed on the lower beam of the bracket, the telescopic rod of the cylinder is vertically upward, and the top of the telescopic rod is arranged
  • the top platform; the upper beam of the bracket opposite to the top platform is fixed with a sealing head vertically downward, and the lower surface of the sealing head is in communication with a compressor through a gas pipe, and a pressure is also installed on the gas pipe
  • a meter and a shut-off valve, the shut-off valve is located between the air compressor and the pressure gauge.
  • a rubber nozzle is fixed on the lower surface of the sealing head, and the air outlet of the air pipe extends to the lower surface of the rubber nozzle. Since the rubber material has the performance of radial expansion under pressure, the gap between the sealing head and the terminal groove where the rubber nozzle is arranged under the sealing head is better sealed, which improves the detection reliability of the device.
  • the present invention also provides a method for detecting the sealing performance of battery poles, which includes the following steps: S1: install the terminal to be tested into the terminal slot of the middle cover, and connect the pole of the terminal to be tested with the terminal slot Seal with a sealing ring, and then use sealant to seal the pole and copper sheet of the terminal to be tested with the terminal groove to form an integral structure, wherein a part of the copper sheet extends outside the sealant; S2 : Turn the overall structure upside down, that is, place the copper sheet protruding out of the sealant downwards and the poles upwards, into the gap between the poles and the terminal groove Inject the detection liquid; S3: Place the inverted overall structure on the top platform, pull the control valve to raise the telescopic rod of the cylinder to the outer edge of the root of the terminal groove and the sealing head The lower surface is locked and sealed; S4: Manually press the compressor to inflate the space between the sealing head and the terminal groove through the air pipe, and close the pressure gauge after the pressure gauge reaches the
  • the cut-off valve; S5 After the pressure is maintained for a preset time, open the cut-off valve, remove the overall mechanism, and observe whether there is any leakage of the detection liquid around the copper sheet of the terminal to be tested. If there is leakage, it can be determined The sealing performance of the sealant is poor, otherwise the sealing effect of the sealant is better.
  • the preset value is less than the top pressure of the cylinder, and the preset value is 15-40 kpa.
  • the pressure applied from the upper end between the sealing head and the terminal groove should be less than the top pressure of the cylinder to ensure the accuracy of the test results.
  • the preset time is 50-80s.
  • the coloring paper is also laid flat on the top table. If the quality of the sealant is poor, under the action of the upper pressure, the detection liquid will go down from the space between the terminal slot and the sealing head, through the inner wall of the terminal slot and the sealant and/or between the sealant and the outer wall of the terminal. Leakage until the detection liquid leaks along the outer wall of the terminal to the color paper below. In this way, as long as there is detection liquid on the color paper, it can be judged that the seal between the terminal and the terminal groove is not good, and the quality of the sealant can also be judged. It's bad, the judgment is simple and convenient.
  • the colored paper is rice paper.
  • the detection liquid is black ink.
  • the pressure in the space After the pressure in the space reaches a certain value, if the sealant between the terminal and the terminal groove is well sealed, the pressure in the above space will not press the detection liquid into the pole The gap between the outer wall and the sealant, that is, the detection liquid will not leak from the gap between the outer wall of the copper sheet at the bottom of the terminal and the sealant; on the contrary, if the sealant between the terminal and the terminal groove is not properly sealed, the above The pressure in the space will press the detection liquid into the gap between the outer wall of the pole and the sealant, that is, the detection liquid will leak out from the gap between the outer wall of the copper sheet at the bottom of the terminal and the sealant; check whether the liquid has leaked by naked eyes Can get it.
  • the device has a simple structure, quick and convenient detection, and can detect the tightness of the sealant; at the same time, through the above detection methods, it can also simulate the internal creeping trajectory of the terminal to find the true cause of the creeping, and provide an effective guarantee for improving product quality.
  • Figure 1 is a schematic diagram of the structure of an energy storage battery terminal sealing performance testing device
  • Figure 2 is a schematic diagram of the structure when the terminal to be tested is installed in the terminal slot and placed upright;
  • Figure 3 is a schematic diagram of the structure when the terminal to be tested is installed in the terminal slot and the testing liquid is injected upside down;
  • FIG. 4 is a schematic diagram of the structure when the sealing performance testing device of the pole post of the energy storage battery is used for testing the sealing performance of the terminal on the side.
  • This embodiment provides a device for detecting the sealing performance of an energy storage battery pole column, as shown in Figure 1, which is mainly composed of a cylinder 2, a bracket 3, a sealing head 5 and a pneumatic pump 7.
  • the telescopic rod 201 of the cylinder 2 is fixed vertically upwards
  • the cylinder 2 is connected with a control valve 12, and the top of the telescopic rod 201 of the cylinder 2 is provided with a top platform 14; the upper beam 302 of the bracket 3 is fixed vertically downward at a position opposite to the top platform 14
  • the sealing head 5, in order to improve the sealing performance of the sealing head 5, a rubber nozzle 11 is also fixed on the lower surface of the sealing head 5 on the lower surface of the sealing head 5.
  • the air pipe 6 extends from the upper part of the sealing head 5 through its interior to its lower surface, And the outlet of the air pipe 6 extends to the lower surface of the rubber nozzle 11, that is, the lower surface of the rubber nozzle 11 communicates with the compressor 7 through the air pipe 6.
  • a pressure gauge 8 and a shut-off valve 9 are also installed on the air pipe 6, and the shut-off valve 9 is located at the pressure Between the air pump 7 and the pressure gauge 8.
  • test steps for testing the sealing of battery poles using this device are as follows:
  • the overall structure is inverted, that is, the copper sheet 102 protruding outside the sealant 13 is placed downward and the pole 101 is upward, and the inspection is injected into the gap between the pole 101 and the terminal groove 401 Liquid 15;
  • the detection liquid 15 can use black ink.
  • S3 Lay the color-developing paper 16 (rice paper can be used in the present invention) on the top platform.
  • the color-developing paper 16 is provided with a through hole 1601 that just allows the copper sheet 102 to pass through, and the inverted overall structure is placed on the top platform 14.
  • the lower surface is locked and sealed;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

一种储能蓄电池极柱密封性能检测装置及其检测方法，其中连接有控制阀（12）的气缸（2）固定在支架（3）的下横梁（301）上，气缸（2）的伸缩杆（201）竖直向上，伸缩杆（201）的顶部设置顶台（14）；支架（3）的上横梁（302）上与顶台（14）相对的位置竖直向下固定有密封头（5），密封头（5）的下表面通过气管（6）与压气泵（7）连通，在气管（6）上还安装有压力表（8）和截止阀（9），截止阀（9）位于压气泵（7）与压力表（8）之间。该装置和方法能够有效测试判定密封胶的质量是否达标，同时能够找出端子爬酸腐蚀的真正原因，有效解决了爬酸腐蚀的问题，降低生产成本。

Description

储能蓄电池极柱密封性能检测装置及其检测方法 技术领域
本发明涉及蓄电池制造领域，特别涉及一种储能蓄电池极柱密封性能检测装置及其检测方法。
背景技术
蓄电池在制造过程中，时常会发生端子爬酸腐蚀的质量问题，端子的爬酸腐蚀是因为端子与端子槽之间没有完全密封导致，而影响端子与端子槽之间的密封性能优劣的主要因素是用于密封端子槽与端子之间的密封胶质量的优劣，密封胶质量较差会导致端子槽内壁与端子外壁之间的结合力较差，使得二者之间的密封性较差，最终导致端子爬酸腐蚀；影响端子与端子槽之间密封性能优劣的另一个原因是由于员工操作不规范，在充电工序时拧螺丝力过大造成密封胶毛细现象，出现密封胶毛细现象就会影响的端子与端子槽之间的密封性能，出现不良品。
现有技术中，一旦端子出现爬酸腐蚀问题，则就会出现次品，次品率高则会严重提升生产成本，所以，迫切需要寻找一种工具或方法测试判定密封胶质量是否达标，同时能够找出端子爬酸腐蚀的真正原因并纠正，避免问题再次发生。
发明内容
发明目的：针对现有技术中存在的问题，本发明提供一种储能蓄电池极柱密封性能检测装置及其检测方法，本装置和方法能够有效测试判定密封胶的质量是否达标，同时能够找出端子爬酸腐蚀的真正原因，有效解决端子爬酸腐蚀的问题，降低生产成本。
技术方案：本发明提供了一种储能蓄电池极柱密封性能检测装置，连接有控制阀的气缸固定在支架的下横梁上，所述气缸的伸缩杆竖直向上，所述伸缩杆的顶部设置顶台；所述支架的上横梁上与所述顶台相对的位置竖直向下固定有密封头，所述密封头的下表面通过气管与压气泵连通，在所述气管上还安装有压力表和截止阀，所述截止阀位于所述压气泵与所述压力表之间。
进一步地，在所述密封头的下表面还固定有橡胶嘴，所述气管的出气口延伸到所述橡胶嘴的下表面。由于橡胶材质具有受到压力径向展开的性能，在密封头下方设置橡胶嘴能够器的密封头与端子槽之间的间隙被密封的更好，提高本装置的检测可靠性。
本发明还提供了一种蓄电池极柱密封性能的检测方法，包括以下步骤：S1：将待测端子安装到中盖的端子槽内，并将所述待测端子的极柱与所述端子槽之间通过密封圈密封，然后 使用密封胶将待测端子的极柱和铜片与所述端子槽密封，形成整体结构，其中，有一部分所述铜片伸出到所述密封胶外部；S2：将所述整体结构倒置，即，将伸出到所述密封胶外部的所述铜片朝下、所述极柱朝上放置，向所述极柱与所述端子槽之间的间隙内注入检测液体；S3：将倒置的所述整体结构放在所述顶台上，拉动所述控制阀使所述气缸的伸缩杆上升至将所述端子槽的根部外沿与所述密封头的下表面锁紧密封；S4：手压所述压气泵，通过所述气管向所述密封头与所述端子槽之间的空间充气，至所述压力表的读数达到预设值后，关闭所述截止阀；S5：保压预设时间后，打开所述截止阀，取下所述整体机构，观察待测端子的铜片周围是否有所述检测液体渗漏，若有渗漏则能判定密封胶密封性能较差，否则密封胶密封效果较好。
优选地，在所述S4中，所述预设值小于所述气缸的顶压力，且所述预设值为15-40kpa。从上端施加到密封头与端子槽之间的压力要小于气缸的顶压力，以保证测试结果的准确性。
优选地，在所述S5中，所述预设时间为50-80s。
优选地，在所述S3中，在将所述整体结构倒置放在所述顶台上之前，还在所述顶台上平铺显色纸。若密封胶质量较差，在上方压力的作用下，检测液体会从端子槽与密封头之间的空间向下经端子槽内壁与密封胶之间和/或密封胶与端子外壁之间向下渗漏，直至检测液体沿端子外壁渗漏到下方的显色纸上，这样，只要显色纸上有检测液体出现就能够判断端子与端子槽之间密封不良，也就能判断密封胶质量较差了，判断简单方便。
优选地，所述显色纸为宣纸。
优选地，所述检测液体为黑色墨水。
有益效果：本装置在检测端子与端子槽之间的密封性能时，只需将使用密封胶将端子与端子槽密封成整体结构，接着将整体结构倒置，并端子槽与端子的极柱之间的间隙内注入检测液体，然后将倒置的整体结构放在顶台上，通过气缸将顶台上移至整体结构的端子槽根部外沿与密封头锁紧密封，然后通过压气泵向密封头与端子槽之间的空间内充气施压，该空间内的压力达到一定值后，若端子与端子槽之间的密封胶的密封良好，则上述空间内的压力不会将检测液体压入极柱外壁与密封胶之间的间隙，即检测液体不会从端子下部的铜片外壁与密封胶之间的间隙泄漏出去；反之，若端子与端子槽之间的密封胶的密封不好，则上述空间内的压力会将检测液体压入极柱外壁与密封胶之间的间隙，即检测液体会从端子下部的铜片外壁与密封胶之间的间隙泄漏出去；检测液体是否有泄漏通过肉眼观察就能获取。
可见，本装置结构简单，检测快捷方便，能够检测密封胶的密封性；同时，通过以上 检测方法，还可以模拟端子内部爬酸轨迹，查找爬酸的真正原因，为提升产品质量提供有效保证。
附图说明
图1为储能蓄电池极柱密封性能检测装置的结构示意图；
图2为将待测端子安装到端子槽内后正置时的结构示意图；
图3为将待测端子安装到端子槽内后倒置注入检测液体时的结构示意图；
图4为使用储能蓄电池极柱密封性能检测装置的结构对待侧端子的密封性能检测时的结构示意图。
具体实施方式
下面结合附图对本发明进行详细的介绍。
实施方式1：
本实施方式提供了一种储能蓄电池极柱密封性能检测装置，如图1所示，主要由气缸2、支架3、密封头5和气压泵7组成，气缸2的伸缩杆201竖直向上固定在支架3的下横梁上，气缸2上连接有控制阀12，气缸2的伸缩杆201的顶部设置顶台14；支架3的上横梁302上与顶台14相对的位置竖直向下固定有密封头5，为了提高密封头5的密封性能，还在密封头5的下表面密封头5的下表面固定橡胶嘴11，气管6从密封头5的上部伸入贯穿其内部到其下表面，且气管6的出口延伸到橡胶嘴11的下表面，即橡胶嘴11的下表面通过气管6与压气泵7连通，在气管6上还安装有压力表8和截止阀9，截止阀9位于压气泵7与压力表8之间。
在使用本装置对蓄电池极柱的密封性进行检测的检测步骤如下：
S1：如图2，首先将待测端子1安装到中盖4的端子槽401内，并将待测端子1的极柱101与端子槽401之间通过密封圈402密封，然后使用密封胶13将待测端子1的极柱101和铜片102与端子槽401密封，形成整体结构，其中，有一部分铜片102伸出到密封胶13外部；
S2：如图3，将整体结构倒置，即，将伸出到密封胶13外部的铜片102朝下、极柱101朝上放置，向极柱101与端子槽401之间的间隙内注入检测液体15；本发明中，该检测液体15可以使用黑色墨水。
S3：在顶台上平铺显色纸16(本发明中可以使用宣纸)，显色纸16上开设刚好能够允许铜片102穿过的通孔1601，将倒置的整体结构放在顶台14上，如图4，并将伸出密封胶13的铜片102一端穿过通孔1601，拉动控制阀12使气缸2的伸缩杆201上升至将端子槽401的根部外沿与橡胶嘴11的下表面锁紧密封；
S4：手压压气泵7，通过气管6向橡胶嘴11与端子槽401之间的空间充气，至压力表8的读数达到预15-40kpa后，关闭截止阀9；
S5：保压50-80s后，打开截止阀9，取下整体机构，观察待测端子1的铜片102周围或通孔1601四周是否有检测液体15渗漏，若有渗漏则能判定密封胶13密封性能较差，否则密封胶13密封效果较好。
上述实施方式只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所做的等效变换或修饰，都应涵盖在本发明的保护范围之内。

Claims (8)

  1. 一种储能蓄电池极柱密封性能检测装置，其特征在于，连接有控制阀(12)的气缸(2)固定在支架(3)的下横梁(301)上，所述气缸(2)的伸缩杆(201)竖直向上，所述伸缩杆(201)的顶部设置顶台(14)；所述支架(3)的上横梁(302)上与所述顶台(14)相对的位置竖直向下固定有密封头(5)，所述密封头(5)的下表面通过气管(6)与压气泵(7)连通，在所述气管(6)上还安装有压力表(8)和截止阀(9)，所述截止阀(9)位于所述压气泵(7)与所述压力表(8)之间。
  2. 根据权利要求1所述的储能蓄电池极柱密封性能检测装置，其特征在于，在所述密封头(5)的下表面还固定有橡胶嘴(11)，所述气管(6)的出气口延伸到所述橡胶嘴(11)的下表面。
  3. 一种蓄电池极柱密封性能的检测方法，其特征在于，使用如权利要求1或2所述的储能蓄电池极柱密封性能检测装置进行检测，包括以下步骤：
    S1：将待测端子(1)安装到中盖(4)的端子槽(401)内，并将所述待测端子(1)的极柱(101)与所述端子槽(401)之间通过密封圈(402)密封，然后使用密封胶(13)将待测端子(1)的极柱(101)和铜片(102)与所述端子槽(401)密封，形成整体结构，其中，有一部分所述铜片(102)伸出到所述密封胶(13)外部；
    S2：将所述整体结构倒置，即，将伸出到所述密封胶(13)外部的所述铜片(102)朝下、所述极柱(101)朝上放置，向所述极柱(101)与所述端子槽(401)之间的间隙内注入检测液体(15)；
    S3：将倒置的所述整体结构放在所述顶台(14)上，拉动所述控制阀(12)使所述气缸(2)的伸缩杆(201)上升至将所述端子槽(401)的根部外沿与所述密封头(5)的下表面锁紧密封；
    S4：手压所述压气泵(7)，通过所述气管(6)向所述密封头(5)与所述端子槽(401)之间的空间充气，至所述压力表(8)的读数达到预设值后，关闭所述截止阀(9)；
    S5：保压预设时间后，打开所述截止阀(9)，取下所述整体机构，观察待测端子(1)的铜片(102)周围是否有所述检测液体(15)渗漏，若有渗漏则能判定所述密封胶(13)密封性能较差，否则所述密封胶(13)密封效果较好。
  4. 根据权利要求3所述的储能蓄电池极柱密封性能检测装置的检测方法，其特征在于，在所述S4中，所述预设值小于所述气缸(2)的顶压力，且所述预设值为15-40kpa。
  5. 根据权利要求3所述的储能蓄电池极柱密封性能检测装置的检测方法，其特征在于，在所述S5中，所述预设时间为50-80s。
  6. 根据权利要求3中任一项所述的储能蓄电池极柱密封性能检测装置的检测方法，其特征在于，在所述S3中，在将所述整体结构倒置放在所述顶台(14)上之前，还在所述顶台(14)上平铺显色纸(16)。
  7. 根据权利要求6所述的储能蓄电池极柱密封性能检测装置的检测方法，其特征在于，所述显色纸(16)为宣纸。
  8. 根据权利要求3至7中任一项所述的储能蓄电池极柱密封性能检测装置的检测方法，其特征在于，所述检测液体(15)为黑色墨水。
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