Simulation tool for testing service life of lead-acid storage battery

Abstract

The utility model relates to a lead-acid storage battery life test simulation tool. Belongs to the technical field of lead-acid storage batteries. The problem that an existing start-stop life test is long in period (about five months are needed for one test) is mainly solved. The device is mainly characterized by comprising a transparent groove, a transparent cover, a pressure release valve, a sealing liquid hole plug and a lead alloy strip, wherein the pressure release valve, the sealing liquid hole plug and the lead alloy strip are arranged on the transparent cover in a sealing manner; the installation positions of the two lead alloy strips correspond to the positive and negative busbars of the to-be-tested plate group in the transparent groove; and the transparent cover is matched with the upper end opening of the transparent groove and can be adhered with the upper end opening through sealant. The device has the characteristics of simple structure, convenience in operation, capability of quickly and accurately pre-judging the start-stop life of the battery through the thinning or corrosion degree of the negative plate lug and greatly improving the test efficiency, and is mainly used for the start-stop life test of the start-stop lead-acid storage battery.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and in particular relates to a life test simulation tool for lead-acid batteries. Background Art

[0002] The start-stop life test is an important performance indicator of lead-acid batteries (EFB batteries and AGM batteries) that can be used for start-stop functions, but the life test time is relatively long. Take the start-stop life of 18 units of AGM batteries as an example: before the start-stop life test, the initial performance such as capacity, low temperature, and charge acceptance are generally tested. The test cycle of this part is 1-2 weeks, and the start-stop life test cycle of 1 unit is 1 week, and the total cycle is about 20 units. It takes 5 months to do a start-stop life test, which is not convenient for quickly evaluating the life performance of the tested battery. For research work or project development, it is not conducive to the timely improvement and optimization of research work or the rapid advancement of project development. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art and to provide a lead-acid battery life test simulation tooling, which can quickly observe and evaluate the thinning or corrosion degree of the negative plate ear in the start-stop life test, predict the start-stop life of the battery, greatly improve the test efficiency and promote the progress of project development.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lead-acid battery life test simulation tool, characterized in that it is composed of a transparent groove, a transparent cover, a pressure relief valve, a sealing liquid hole plug and a lead alloy strip; wherein the pressure relief valve, the sealing liquid hole plug and the lead alloy strip are sealed and installed on the transparent cover; there are two lead alloy strips, and the installation position corresponds to the positive and negative busbars of the electrode group to be tested installed in the transparent groove; the transparent cover cooperates with the upper port of the transparent groove and can be bonded by a sealant.

[0005] The technical solution of the utility model also includes a pressure sensor, a wire and a pressure display; the pressure sensor is arranged in a transparent groove; one end of the wire is connected to the pressure sensor, and the other end is connected to the pressure display after passing through the transparent cover in a sealed manner.

[0006] The pressure sensor described in the technical solution of the utility model is arranged between the side wall of the transparent groove and the electrode group to be measured.

[0007] The transparent groove described in the technical solution of the utility model is a rectangular groove; the transparent cover is a matching rectangular cover.

[0008] The transparent groove and the transparent cover described in the technical solution of the utility model are made of transparent PP material and are made by injection molding of a mold.

[0009] The transparent cover described in the technical solution of the utility model has two pre-installation holes and two wire holes; the two pre-installation holes are respectively installed with a pressure relief valve and a sealing liquid hole plug; the two wire holes are respectively installed with two lead alloy strips.

[0010] The two pre-installed holes described in the technical solution of the utility model are threaded holes; the pressure relief valve and the sealing liquid hole plug are respectively installed in cooperation with the two pre-installed holes through threads.

[0011] The pressure setting value of the pressure relief valve described in the technical solution of the utility model is within the range of 10kpa-50kpa.

[0012] The utility model adopts a lead-acid battery life test simulation tool consisting of a transparent groove, a transparent cover, a pressure relief valve, a sealing liquid hole plug and a lead alloy strip, wherein the pressure relief valve, the sealing liquid hole plug and the lead alloy strip are sealed and installed on the transparent cover, there are two lead alloy strips, the installation position of which corresponds to the positive and negative busbars of the electrode group to be tested installed in the transparent groove, the transparent cover cooperates with the upper port of the transparent groove and can be bonded by a sealing adhesive, so when performing a life test, the electrode group to be tested is assembled into the transparent groove, and then the two lead alloy strips are respectively welded to the positive and negative busbars, the pressure of the pressure relief valve is set within the range of 10kpa-50kpa, the transparent cover is bonded to the transparent groove by the sealing adhesive, an appropriate amount of sulfuric acid is added from the pre-installed hole where the sealing liquid hole plug is located, and then the pre-installed hole is sealed with the sealing liquid hole plug, and then the life test is started, during the test, the thinning or corrosion degree of the negative plate ear can be directly observed through the transparent groove, the start-stop life of the battery can be accurately predicted by the thinning or corrosion degree of the negative plate ear, and the test efficiency is greatly improved. In addition, the utility model is also suitable for simulation tests of life such as 50% DOD cycle life, SAEj2801 life, high temperature corrosion, water loss, etc.

[0013] The utility model has the characteristics of simple structure, convenient operation, and can quickly and accurately predict the start-stop life of the battery through the thinning or corrosion degree of the negative plate ear and greatly improve the test efficiency. It is mainly used for the start-stop life test of the start-stop lead-acid battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model.

[0015] In the figure: 1-transparent groove; 2-transparent cover; 3-electrode group; 4-pressure relief valve; 5-sealing liquid hole plug; 6-pressure sensor; 7-lead alloy strip; 8-conducting wire. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 The utility model provides a lead-acid battery life test simulation tool, which includes a transparent tank 1, a transparent cover 2, a pressure relief valve 4, a sealing liquid hole plug 5, a lead alloy strip 7, a pressure sensor 6, a pressure display and a wire 8. The transparent tank 1 is equipped with a side electrode group 3.

[0018] The transparent groove 1 is a rectangular groove with an open upper end, made of transparent PP material, and is made by mold injection molding.

[0019] The transparent cover 2 is a rectangular cover that matches the upper opening of the transparent groove. It is made of transparent PP material and is made by mold injection molding. The transparent cover 2 is provided with 2 pre-installed holes and 3 wire holes, of which 2 pre-installed holes are threaded holes. The pressure relief valve 4 and the sealing liquid hole plug 5 are respectively installed with the 2 pre-installed holes through threads to achieve a sealing effect. Two of the 3 wire holes are respectively installed with 2 lead alloy strips 7. The positions of the 2 wire holes correspond to the positive and negative bus bars of the electrode group 3 to be tested in the transparent groove 1. The other wire hole is installed with a wire 8. The 2 lead alloy strips 7 and the wire 8 are bonded to the transparent cover 2 with sealant. The pressure setting value of the pressure relief valve 4 is in the range of 10kpa-50kpa. The transparent cover 2 and the transparent groove 1 can be bonded with sealant.

[0020] The pressure sensor 6 is placed between the side wall of the transparent tank 1 and the electrode group 3 to be measured. One end of the wire 8 is connected to the pressure sensor 6, and the other end is sealed through the transparent cover 2 and connected to the pressure display (not shown in the figure).

[0021] When conducting a life test, first install the electrode group 3 to be tested into the transparent groove, then weld two lead alloy strips 7 to the positive and negative busbars respectively, set the pressure of the pressure relief valve 4 within the range of 10kpa-50kpa, adhere the transparent cover 2 to the transparent groove 1 through a sealant, add sulfuric acid solution from the pre-installed hole where the sealing liquid hole plug 5 is located, and the sulfuric acid level submerges the upper frame of the positive and negative electrode plates and is lower than the lower surface of the busbar. Then install the sealing liquid hole plug 5 at the pre-installed hole and tighten it, and then conduct a life test according to the test procedure. During the life test, the degree of thinning or corrosion of the negative plate ear can be directly observed through the transparent groove. By comparing the degree of thinning or corrosion of the negative plate ear with the standard of the life comparison table, the start-stop life of the battery can be quickly and accurately predicted, greatly improving the test efficiency.

[0022] During the life test, it is also necessary to constantly observe whether the sulfuric acid level is lower than the upper borders of the positive and negative plates. When the sulfuric acid level is lower than the upper borders of the positive and negative plates, the test procedure is suspended, the sealing liquid hole plug 5 is unscrewed, and an appropriate amount of pure water or sulfuric acid is added from the pre-installed hole where the sealing liquid hole plug 5 is located, so that the sulfuric acid level submerges the upper borders of the positive and negative plates and is lower than the lower surface of the busbar. Then screw on the sealing liquid hole plug 5 and continue the test.

[0023] The start-stop life test method is set according to JB / T 12666-2016 5.3.9 start-stop cycle capability test (including method one and method two). This test selects 5.3.9 method two. The start-stop life test comparison table is as follows:

[0024]

[0025] The comparison data in the above table shows that the start-stop life of a 60AhEFB battery can be shortened by 4-6 weeks by using the utility model tooling test, and the start-stop life of a 60AhAGM battery can be shortened by 4-11 weeks by using the utility model tooling test. The higher pressure setting of the pressure relief valve is conducive to shortening the test time.

[0026] The utility model is also suitable for simulation tests of 50%DOD cycle life, SAEj2801 life, high temperature corrosion, water loss, etc. When used for 50%DOD cycle life simulation test, the volume expansion of the positive electrode active material is relatively obvious during the test, and the pressure sensor can display the pressure change of the pressure sensor after the positive electrode active material expands in real time, which is conducive to more accurate evaluation of the 50%DOD cycle life failure mode.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lead-acid battery life test simulation tool, characterized by: The device comprises a transparent tank (1), a transparent cover (2), a pressure relief valve (4), a sealing liquid hole plug (5) and a lead alloy strip (7); wherein the pressure relief valve (4), the sealing liquid hole plug (5) and the lead alloy strip (7) are sealed and mounted on the transparent cover (2); the lead alloy strips (7) are two in number and are mounted at positions corresponding to the positive and negative busbars of the electrode group (3) to be tested installed in the transparent tank (1); the transparent cover (2) cooperates with the upper end of the transparent tank (1) and can be bonded together by means of a sealing adhesive.

2. The lead-acid battery life test simulation tool according to claim 1, characterized in that: It also comprises a pressure sensor (6), a wire (8) and a pressure display; the pressure sensor (6) is arranged in the transparent groove (1); one end of the wire (8) is connected to the pressure sensor (6), and the other end is connected to the pressure display after passing through the transparent cover (2) in a sealed manner.

3. The lead-acid battery life test simulation tool according to claim 2, characterized in that: The pressure sensor (6) is arranged between the side wall of the transparent groove (1) and the electrode group (3) to be measured.

4. A lead-acid battery life test simulation tool according to claim 1, 2 or 3, characterized in that: The transparent groove (1) is a rectangular groove; and the transparent cover (2) is a matching rectangular cover.

5. The lead-acid battery life test simulation tool according to claim 4 is characterized in that: The transparent groove (1) and the transparent cover (2) are made of transparent PP material and are manufactured by injection molding.

6. A lead-acid battery life test simulation tool according to any one of claims 1-3 and 5, characterized in that: The transparent cover (2) is provided with two pre-installation holes and two wire holes; the two pre-installation holes are respectively provided with a pressure relief valve (4) and a sealing liquid hole plug (5); and the two wire holes are respectively provided with two lead alloy strips (7).

7. The lead-acid battery life test simulation tool according to claim 6 is characterized by: The two pre-installation holes are threaded holes; the pressure relief valve (4) and the sealing liquid hole plug (5) are respectively installed in cooperation with the two pre-installation holes through threads.

8. A lead-acid battery life test simulation tool according to any one of claims 1-3, 5, and 7, characterized in that: The pressure setting value of the pressure relief valve (4) is in the range of 10 kPa-50 kPa.

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