How to repair colloid lead acid?

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Pembekal Stesen Janakuasa Mudah Alih

The electric vehicle battery is a poor liquid battery. The electrolyte inside the colloidal battery is paste, and the internal inside is not seen that the electrolyte is adsorbed into the separator. It is difficult to completely replace the electrolyte, mainly What replacement is needed to replace the electrolyte, because the electrolyte purity used by the lean fluid battery is very high, it is much higher than the outer or high purity.

Electric car electrolyte is generally a dilute sulfate capacity of 1.30-1.34.

If you want to match it yourself, you will have a specific gravity while dilute sulfuric acid. The addition of electricity is usually in 1.37 or whether the battery repair is feasible to be based on the battery itself.

It is determined because the battery damage is divided into many kinds of hardware damage and software damage or life end and other reasons. Most batteries can be repaired. Some batteries can be repaired first.

condition. Want to understand how to fix it to understand its failure mode: 1. The failure mode of the lead-acid battery is different from the type, manufacturing conditions, methods of use, and ultimately lead to different reasons for the failure of the battery.

Incident, the failure of the lead-acid battery has several situations: 1. The corrosion modification of the positive electrode plate is currently three types of alloys used: traditional lead antimony alloys, ruthenium content at 4% ~ 7% mass fraction; Low bismuth or ultra-low antimony alloy, content in 2% mass fraction or less than 1% mass fraction, tin, copper, cadmium, sulfur and other variant crystal; lead calcium series, actual lead-calcium-tin-aluminum Four yuan alloy, calcium content is 0.06% ~ 0.

1% mass fraction. The above-mentioned positive plate grid is cast in the battery charging process to be oxidized into a lead and neutral lead in the battery, and finally leads to the action of supporting the active substance and failing the battery; or due to the formation of the nestal corrosion layer The alloy produces stress, so that the board gate is largely deformed, and this deformation will make the polar for overall damage, the active material is poor contact with the grid, or short circuit at the bus stop. 2, the positive plate active substance is falling off, softened.

In addition to the reactive substances of the rending, the rending and discharge is repeated, the combination between the lead particles is relaxed, softened, soften from the grid. A series of factors such as manufacturing, equipped tight and charge and discharge conditions, etc. 3, the irreversible sulfuricate battery is over-discharge and long-term storage in the discharge state, the negative electrode will form a coarse, difficult to accept the charging of lead crystals, this phenomenon is referred to as irreversible sulfate.

Slight irreversible sulfate, can still be recovered, when it is serious, then the electrode is invalid, charged. 4. When the capacity is too early, when low bismuth or lead calcium is a grid alloy, the battery is suddenly decreased in the initial stage of the battery, so that the battery is invalid.

5. The severe accumulation of the severe accumulation of the active material on the active material is partially transferred to the surface of the negative plate active substance, since the H + is reduced by the hyper electrodes of the lead than the lower electrodes of the lead. 200mV, Thus, the charging voltage is reduced during the accumulation of antimony, and most current is used for water decomposition.

The battery cannot be charged normally. The antirecturizers of the lead-acid battery negative substance that fail to have only 2.30V and the agula content of the lead-acid battery negative substance have been tested.

The surface layer of the active substance, the content of the antimony reaches 0.12% to 0.19% mass fraction.

For some batteries, such as with a battery, there is a certain limit on the battery. Testing the hydrogen-proof cellular active substance test, the average ruthenium content reached 0.4% mass fraction.

6, heat loss for less maintenance battery, requires no charging voltage to not exceed single 2.4V. In actual use, for example, in the car, the pressure regulating device may be out of control, the charging voltage is too high, so that the charging current is too large, the heat generated will increase the temperature of the battery electrolyte, resulting in a decrease in the internal resistance of the battery; Strengthens charging current.

The temperature rise and current of the battery are booming each other, ultimately uncontrollable, deform the battery, cracking. Although the thermal out of control is not the failure pattern of lead-acid batteries, it is not uncommon. Attention should be paid to the phenomenon of high charging voltage, and battery heat.

7, the corrosion of the negative electrode bush, there is no corrosion problem in the negative electrode grid and the bus row, but in the valve-controlled sealing battery, when the oxygen circulation is established, the upper space of the battery is substantially full of oxygen, how much is the bus bar The electrolyte in the diaphragm climbs to the bus along the ear. The alloy of the bus bar will be oxidized, and the lead in sulfate is further formed. If the bus bar alloy is selected, the flow of slags and the slit is placed, and the corrosion will deepen along these gaps, resulting in venting, negative plate failure.

8. The diaphragm perforation causes a short circuit, such as a PP (polypropylene) diaphragm with a large pore size, and the PP fuse is displaced during use, resulting in a large hole, the active material can pass through the charge and discharge process. Macher, causing micro short circuit to fail the battery.

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