CN215894883U - Test fixture for influence of lead-acid storage battery plate spacing on battery performance - Google Patents
Test fixture for influence of lead-acid storage battery plate spacing on battery performance Download PDFInfo
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- CN215894883U CN215894883U CN202121851538.5U CN202121851538U CN215894883U CN 215894883 U CN215894883 U CN 215894883U CN 202121851538 U CN202121851538 U CN 202121851538U CN 215894883 U CN215894883 U CN 215894883U
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Abstract
The utility model discloses a test fixture for testing the influence of the space between polar plates of a lead-acid storage battery on the battery performance, which comprises two acid-resistant clamping plates and an acid-resistant locking piece for clamping the two acid-resistant clamping plates, wherein the two acid-resistant clamping plates clamp a single battery to be tested. The utility model provides a test fixture for testing the influence of the space between the polar plates of a lead-acid storage battery on the battery performance, which can adjust the space between the test fixtures according to the requirements, control the pressure borne by the separator of a single battery and the thickness of the separator and facilitate the test of the influence of the space between the polar plates on the battery performance.
Description
Technical Field
The utility model relates to the technical field of electric lead-acid storage batteries, in particular to a test fixture for testing influence of the space between polar plates of a lead-acid storage battery on the performance of the battery.
Background
The utility model of the lead-acid storage battery has the history of more than 150 years, and is widely applied due to the advantages of good reliability, high cost performance, recyclability and the like. At present, the storage battery mainly comprises a positive plate, a negative plate and a separator of a third electrode. There are two main methods for selecting a suitable thickness for an AGM separator. With moderate pressure, moderate assembly tightness: the compression ratio of the AGM separator is 25-30% on the basis of the thickness of the AGM separator under the pressure of 10 KPa; with high pressure, high assembly tightness: the AGM separator is further compressed by 10-15% based on the thickness of the AGM separator under the pressure of 100 KPa. Thereby determining the degree of assembly tightness of the battery or selecting an appropriate thickness of the AGM separator. In short, in order to reduce the internal resistance and volume of the battery, the positive and negative electrode plates should be as close as possible but not in contact with each other to short-circuit, so that an insulating separator is interposed between the adjacent positive and negative electrode plates. The design of the plastic shell and the selection of the thickness of the partition plate can be guided by determining the distance between the polar plates, the influence of the thickness of the partition plate and the change of the inner cavity of the plastic shell on the performance of the battery is unknown, the current situation can be judged only by experience, and the difficulty is caused by how to test the influence of different polar plate distances on the performance of the battery. At present, the separator is in close contact with the polar plate mainly by improving the assembly pressure, so that the resistance formed at the contact part is reduced, but the difficulty of adding acid and the reduction of the acid content are caused under the high assembly pressure, and the service life of the battery is influenced. Therefore, there is a constant lack of devices and methods for testing the effect of different plate spacings on battery performance. The plastic shell design and the AGM separator are optimized by testing different polar plate distances of the polar plates, so that the cycle life of the battery is prolonged. Therefore, the application provides a method for testing the influence of the pole plate spacing of the lead-acid storage battery on the battery performance, so as to solve the problems.
Chinese patent application publication No. CN110797587A, published as 2020, 14 months, entitled "method for controlling, evaluating and repairing thermal runaway of lead-acid storage battery", discloses a method for controlling, evaluating and repairing thermal runaway of lead-acid storage battery, which improves thermal runaway resistance of battery by designing and controlling suitable positive-negative active material ratio, acid injection amount and electrode spacing, tests change rate of charging current of storage battery during overcharge by thermal runaway evaluation method, evaluates advantages and disadvantages of design scheme and thermal runaway resistance, finds out various optimum designs, improves thermal runaway resistance by charging and discharging repair of storage battery under thermal runaway condition, and improves reliability of product life and best economic effect. However, the patent still does not solve the above problems.
Disclosure of Invention
The utility model aims to solve the problem that the prior art lacks a device and a method for testing the influence of different plate spacing on the battery performance, and provides a test fixture for testing the influence of the plate spacing of a lead-acid storage battery on the battery performance.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a test fixture of lead acid battery polar plate interval to battery performance influence, includes two acidproof splint and is used for pressing from both sides the acidproof retaining member of two acidproof splint of clamp, and two acidproof splint press from both sides the monomer battery that awaits measuring.
The acid-proof clamping plate and the acid-proof locking piece in the technical scheme are both made of acid-proof materials. The test fixture is used for clamping the single batteries to be tested, then the distance between the two acid-resistant clamping plates is adjusted as required, the pressure borne by the partition plates of the single batteries and the thickness of the partition plates can be controlled, and the influence of the distance between the polar plates on the performance of the batteries can be conveniently tested.
Preferably, the material of the acid-proof clamping plate is transparent organic glass. The transparent organic glass can resist acid and is convenient for observing the battery pole piece in the test.
Preferably, the outer end face, far away from the single battery, of the acid-proof clamping plate is provided with a reinforcing rib. The structure can increase the structural strength of the acid-proof clamping plate and reduce the deformation amount of the acid-proof clamping plate when the battery is clamped.
Preferably, the acid-proof locking piece comprises a plurality of locking bolts and a plurality of locking nuts, the locking bolts penetrate through the two acid-proof clamping plates, and the locking bolts and the corresponding locking nuts clamp the two acid-proof clamping plates. The structure can realize the adjustment and locking of the distance between the two acid-proof clamping plates. And a plurality of locking bolts are arranged along the circumferential direction of the acid-proof clamping plate, so that the uniform stress of the battery can be ensured.
Preferably, the material of the locking bolt is acid-resistant stainless steel, and the material of the locking nut is acid-resistant stainless steel.
Preferably, the acid-proof locking part comprises a supporting plate, a puller bolt and a plurality of guide pillars, the supporting plate is arranged on the outer sides of the two acid-proof clamping plates, the two ends of the guide pillars are respectively fixed with the supporting plate and the acid-proof clamping plates arranged on the outer sides, the acid-proof clamping plates arranged on the inner sides are in sliding connection with the guide pillars through guide holes, the puller bolt is in threaded connection with the supporting plate, and one end of the puller bolt is tightly pressed against the middle position of the acid-proof clamping plates arranged on the inner sides. The structure can realize the adjustment and locking of the distance between the two acid-proof clamping plates. And only need twist a puller bolt, can adjust the interval of two acidproof splint, because the one end puller bolt sets up the intermediate position of the acidproof splint in the inboard, can guarantee that the interval of two acidproof splint is more even, guarantees that the battery atress is even. The supporting plate, the puller bolt and the guide pillar are all made of acid-resistant materials.
Preferably, a friction plate is provided at a position where the acid-proof clamp plate provided inside contacts the jack bolt. The structure can avoid the acid-resistant splint of puller bolt wearing and tearing.
Preferably, a scale plate is fixed on the side wall of one of the acid-proof clamping plates, scale marks are arranged on the scale plate, and the side wall of the other acid-proof clamping plate is aligned with the scale marks. The structure is convenient for measuring the distance between the two acid-proof splints.
The utility model has the beneficial effects that: (1) the distance between the test clamps can be adjusted as required, the pressure borne by the separator of the single battery and the thickness of the separator can be controlled, and the influence of the distance between the test polar plates on the performance of the battery is facilitated; (2) the distance between the two acid-resistant clamping plates can be adjusted only by screwing one puller bolt, and the distance between the two acid-resistant clamping plates can be ensured to be more uniform and the stress of the battery can be ensured to be uniform because one end of the puller bolt is tightly propped against the middle position of the acid-resistant clamping plate arranged at the inner side; (3) the testing method can truly and reversely test the difference of the battery performances at different intervals; the test time is short, and the operation is convenient; the most suitable polar plate distance can be obtained, and the battery performance is improved; and guiding the design of the plastic shell of the storage battery and the selection of the thickness of the partition plate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of example 2.
In the figure: the acid-proof clamping plate comprises an acid-proof clamping plate 1, a friction plate 1.2, an acid-proof locking part 2, a locking bolt 2.1, a locking nut 2.2, a supporting plate 2.3, a puller bolt 2.4, a guide pillar 2.5, a scale plate 3, a single battery 4, a polar plate 4.1 and a partition plate 4.2.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in figure 1, the test fixture for the influence of the pole plate distance of the lead-acid storage battery on the battery performance comprises two acid-resistant clamping plates 1 and an acid-resistant locking piece 2 for clamping the two acid-resistant clamping plates 1, wherein the two acid-resistant clamping plates 1 clamp a single battery 4 to be tested. The material of the acid-proof splint 1 is transparent organic glass. The acid-proof locking part 2 comprises a plurality of locking bolts 2.1 and a plurality of locking nuts 2.2, the locking bolts 2.1 penetrate through the two acid-proof clamping plates 1, and the locking bolts 2.1 and the corresponding locking nuts 2.2 clamp the two acid-proof clamping plates 1 tightly. The locking bolt 2.1 is made of acid-resistant stainless steel, and the locking nut 2.2 is made of acid-resistant stainless steel.
The acid-proof splint 1 and the acid-proof locking piece 2 in the technical scheme are both made of acid-proof materials. The test fixture is used for clamping the single battery 4 to be tested, then the distance between the two acid-proof clamping plates 1 is adjusted as required, the pressure borne by the partition plate 4.2 of the single battery 4 and the thickness of the partition plate 4.2 can be controlled, and the influence of the distance between the pole plates 4.1 on the battery performance can be conveniently tested.
Example 2:
as shown in figure 2, the test fixture for the influence of the 4.1-space of the lead-acid storage battery pole plates on the battery performance comprises two acid-proof clamping plates 1 and an acid-proof locking piece 2 used for clamping the two acid-proof clamping plates 1, wherein the two acid-proof clamping plates 1 clamp a single battery 4 to be tested. And reinforcing ribs are arranged on the outer end face, far away from the single battery 4, of the acid-proof clamping plate 1. The acid-proof locking piece 2 comprises a supporting plate 2.3, a puller bolt 2.4 and a plurality of guide pillars 2.5, the supporting plate 2.3 is arranged on the outer side of two acid-proof clamping plates 1, the two ends of each guide pillar 2.5 are respectively fixed with the supporting plate 2.3 and the acid-proof clamping plate 1 arranged on the outer side, the acid-proof clamping plate 1 arranged on the inner side is connected with the guide pillars 2.5 in a sliding mode through guide holes, the puller bolt 2.4 is connected with the supporting plate 2.3 through threads, and one end of the puller bolt 2.4 is tightly pressed against the middle position of the acid-proof clamping plate 1 arranged on the inner side. The position of the acid-proof splint 1 arranged at the inner side, which is contacted with the puller bolt 2.4, is provided with a friction plate 1.2. The side wall of one of the acid-proof clamping plates 1 is fixed with a scale plate 3, the scale plate 3 is provided with scale marks, and the side wall of the other acid-proof clamping plate 1 is aligned with the scale marks.
The acid-proof splint 1 and the acid-proof locking piece 2 in the technical scheme are both made of acid-proof materials. The test fixture is used for clamping the single battery 4 to be tested, then the distance between the two acid-proof clamping plates 1 is adjusted as required, the pressure borne by the partition plate 4.2 of the single battery 4 and the thickness of the partition plate 4.2 can be controlled, and the influence of the distance between the pole plates 4.1 on the battery performance can be conveniently tested. The structure can realize the adjustment and locking of the distance between the two acid-resistant splints 1. And only need twist a puller bolt 2.4, can adjust the interval of two acidproof splint 1, because the one end top of puller bolt 2.4 sets up the intermediate position of the acidproof splint 1 in the inboard, can guarantee that the interval of two acidproof splint 1 is more even, guarantees that the battery atress is even. The supporting plate 2.3, the puller bolt 2.4 and the guide pillar 2.5 are all made of acid-resistant materials.
Example 3:
a test method for influence of a lead-acid storage battery plate spacing on battery performance adopts a test fixture for influence of the lead-acid storage battery plate spacing on the battery performance in embodiment 1 or embodiment 2, and comprises the following steps:
a. formation of a battery: selecting a polar plate 4.1 with the same thickness and gram weight to assemble a battery, and forming to ensure that the polar plate 4.1 has activity;
b. and (3) capacity detection: performing primary capacity detection on the battery for 3 times to ensure that the battery is normal;
c. and (3) dissecting a battery: dissecting the battery, taking out one part of the polar plate 4.1, washing and drying, testing the thickness d, and ensuring that the other part of the polar plate 4.1 is intact and taken out;
d. battery repacking: taking out intact single positive plates 4.1 and negative plates 4.1, overlapping in a staggered manner, arranging AGM separators 4.2 between the positive plates 4.1, assembling to obtain a new single battery 4, wherein the total number of the positive plates 4.1 and the negative plates 4.1 is 3, and before assembling the AGM separators 4.2, all the separators 4.2 are required to be 1.37g/cm3Soaking in acid;
e. and (3) adjusting the distance: the reassembled battery box is placed into a self-sealing bag and sealed, then is placed into a clamp, an acid electrolyte is filled in the self-sealing bag, the distance between the clamps under a certain pressure P is calculated according to a curve that the thickness of a partition plate 4.2 changes along with the pressure and the thickness d of a cooked polar plate 4.1, and a test clamp is adjusted to the distance corresponding to the pressure P;
f. and (3) charge-discharge circulation: soaking the battery after being reassembled in the acidic electrolyte, and carrying out 3 times of charge-discharge circulation on the single battery 4 in the test fixture at normal temperature to uniformly mix acid with the partition plate 4.2;
g. and (3) performance testing: the special tool is utilized to test the capacity, the large current, the constant power and the low-temperature performance, the constant-current electricity supplementing technology is adopted to charge after each performance test, the charging multiplying power is 1.1-1.2 times, and the battery is ensured to be fully charged.
Several experiments were performed with AGM separators 4.2 having different thicknesses at the same pressure.
The partition plate 4.2 in the technical scheme has elasticity, the thickness of the single partition plate 4.2 is related to the pressure borne by the partition plate 4.2, the corresponding relation between the thickness of the partition plate 4.2 and the pressure borne by the partition plate 4.2 can be measured before a test, and a pressure-thickness curve graph of the partition plate 4.2 is drawn. The testing method in the technical scheme can truly and reversely test the differences of the battery performances at different intervals; the testing time is short, and the operation is convenient; the most suitable distance between the polar plates is 4.1, and the battery performance is improved; and guiding the design of the plastic shell of the storage battery and the selection of the thickness of the separator 4.2. During testing, 5 monomers are made at each interval, and errors are reduced through multiple tests.
The utility model has the beneficial effects that: (1) the distance between the test clamps can be adjusted as required, the pressure borne by the separator 4.2 of the single battery 4 and the thickness of the separator 4.2 can be controlled, and the influence of the distance between the test polar plates 4.1 on the battery performance can be conveniently tested; (2) the distance between the two acid-resistant clamping plates 1 can be adjusted only by screwing one puller bolt 2.4, and as one end of the puller bolt 2.4 is tightly propped against the middle position of the acid-resistant clamping plate 1 arranged at the inner side, the uniform distance between the two acid-resistant clamping plates 1 can be ensured, and the uniform stress of the battery can be ensured; (3) the testing method can truly and reversely test the difference of the battery performances at different intervals; the test time is short, and the operation is convenient; the most suitable distance between the polar plates is 4.1, and the battery performance is improved; and guiding the design of the plastic shell of the storage battery and the selection of the thickness of the separator 4.2.
Claims (8)
1. The utility model provides a test fixture of lead acid battery polar plate interval to battery performance influence, characterized by includes two acidproof splint and is used for pressing from both sides the acidproof retaining member of two acidproof splint of tight, and two acidproof splint press from both sides the monomer battery that awaits measuring.
2. The test fixture for testing the influence of the plate spacing of the lead-acid storage battery on the battery performance as claimed in claim 1, wherein the material of the acid-resistant clamping plate is transparent organic glass.
3. The fixture for testing the influence of the distance between the pole plates of the lead-acid storage battery on the performance of the battery as claimed in claim 1, wherein the outer end face of the acid-proof clamping plate, which is far away from the single battery, is provided with a reinforcing rib.
4. The test fixture for testing influence of polar plate spacing on battery performance of lead-acid storage battery of claim 1, 2 or 3, wherein said acid-proof locking member comprises a plurality of locking bolts and a plurality of locking nuts, the locking bolts penetrate through the two acid-proof clamping plates, and the locking bolts and the corresponding locking nuts clamp the two acid-proof clamping plates.
5. The fixture of claim 4, wherein the locking bolt is made of acid-resistant stainless steel, and the locking nut is made of acid-resistant stainless steel.
6. The test fixture for testing the influence of the polar plate spacing of the lead-acid storage battery on the battery performance as claimed in claim 1, 2 or 3, wherein the acid-proof locking member comprises a support plate, a tightening bolt and a plurality of guide pillars, the support plate is arranged on the outer side of the two acid-proof clamping plates, the two ends of each guide pillar are respectively fixed with the support plate and the acid-proof clamping plate arranged on the outer side, the acid-proof clamping plate arranged on the inner side is slidably connected with the guide pillar through a guide hole, the tightening bolt is connected with the support plate through a thread, and one end of the tightening bolt is tightened against the middle position of the acid-proof clamping plate arranged on the inner side.
7. The test fixture for testing the influence of the pole plate distance of the lead-acid storage battery on the battery performance as claimed in claim 6, wherein a friction plate is arranged at the position where the acid-proof clamping plate arranged on the inner side is contacted with the puller bolt.
8. The fixture for testing influence of polar plate spacing of the lead-acid storage battery on battery performance as claimed in claim 1, 2 or 3, wherein a scale plate is fixed on the side wall of one acid-proof clamping plate, scale lines are arranged on the scale plate, and the side wall of the other acid-proof clamping plate is aligned with the scale lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121851538.5U CN215894883U (en) | 2021-08-09 | 2021-08-09 | Test fixture for influence of lead-acid storage battery plate spacing on battery performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121851538.5U CN215894883U (en) | 2021-08-09 | 2021-08-09 | Test fixture for influence of lead-acid storage battery plate spacing on battery performance |
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| CN215894883U true CN215894883U (en) | 2022-02-22 |
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| CN202121851538.5U Active CN215894883U (en) | 2021-08-09 | 2021-08-09 | Test fixture for influence of lead-acid storage battery plate spacing on battery performance |
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Address after: 313100 new industrial park, pheasant Town, Huzhou, Zhejiang, Changxing County Patentee after: Chaowei Power Group Co.,Ltd. Patentee after: Guangxi Chaowei Energy Co.,Ltd. Address before: 313100 new industrial park, pheasant Town, Huzhou, Zhejiang, Changxing County Patentee before: Chaowei Power Group Co.,Ltd. Patentee before: GUANGXI CHAOWEIXINFENG ENERGY Co.,Ltd. |