Preparation of thermal power hydrolysate and charg

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Preparation of electrolyte and charging inspection of automotive battery (I)

1 Preparation of electrolyte

(1) the electrolyte must be prepared with chemically pure sulfuric acid and distilled water. The density of electrolyte is generally 1 29g/cm3 (at 15 C). Industrial sulfuric acid and general water, which contain impurities such as iron and copper, will cause self discharge and plate damage, and cannot be used in batteries. When the electrolyte is added to the battery, its temperature must be controlled between C

(2) the relative density of electrolyte, if the sample should be flattened or straightened, should be determined according to the temperature in the area of use. When the room temperature is C, the relative density of electrolyte is 1.270; At C, PLGA with different mass ratios of electrolyte to monomer has been widely used in clinical applications, with a density of 1.280; Under 20 C, the relative density of electrolyte is 1.290

(3) when preparing electrolyte, sulfuric acid should be slowly poured into distilled water, and distilled water should not be poured into sulfuric acid, so as to prevent sulfuric acid splashing from hurting human body and corroding equipment

(4) for the simple detection of distilled water, use a measuring cup with a capacity of 1000ml (the bottom diameter is 100mm), take 500ml of distilled water, adjust the multimeter to the R 1kq gear, stick the two meter rods on the inner wall and insert them into the water surface. When the resistance value is greater than 100k, it cannot be used

2. Charging of the battery

1 an inconspicuous neutral pen is also the worst source of white pollution. 1

(1) after the electrolyte is injected into the battery, it is necessary to measure the height of the electrolyte, which is generally mm, and then leave the battery standing for h until the temperature of the electrolyte is lower than 35 C. " A thank-you letter from Harbin No. 5 hospital to Heilongjiang metrology verification and Testing Institute

(2) battery charging. Plug the lead of battery 1 into charger 2 for charging. The positive pole of battery and charger is connected with the positive pole, and the negative pole is connected with the negative pole. When the relative density of battery electrolyte is lower than 1.20 (summer), 1.24 (winter) or the storage battery is placed for a long time, it must be charged. The frozen battery should be thawed first. The charging current should be as small as possible, not greater than a. the charging time is about H. During charging, when the single cell voltage of the battery rises by 2.4V, more bubbles begin to appear in the electrolyte. At this time, the charging current should be halved. After charging, a discharge test should be carried out to avoid vulcanization. The damaged battery is only surface charged and can no longer be used. Therefore, observe the battery before charging. If there is sulfide precipitation, it should be replaced. The electrolyte of the battery is strong acid, so avoid touching the skin, eyes or clothes, and pay attention to the following matters: ① when it accidentally touches the skin, wash it with a large amount of water; ② When drinking by mistake, wash the intestines and stomach with a large amount of water or milk, and swallow egg white or vegetable oil; ③ Wear protective glasses when working in close range. If you accidentally touch your eyes, rinse with clean water and apply eyedrops; ④ Flammable gas will be generated during charging, so sparks should be avoided, and the charging or working area should be well ventilated

(3) dry charged battery is made of dry charged electrode plate. After injecting electrolyte for 1h, the vehicle can be started. In case of urgent need, it can also be used immediately after pouring electrolyte. In normal use, if there is sufficient time, h can be charged, which is more beneficial to the service performance of the battery

(4) after charging, check the relative density of electrolyte with a densimeter and adjust the electrolyte to the specified value of relative density. If it is low, the electrolyte with relative density of 1.40 can be supplemented appropriately, otherwise, distilled water can be added. After adjustment, it should be recharged for 2h. If the relative density still does not meet the requirements, it can be adjusted and recharged until it meets the specified value

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