Novice drivers need to know more. For example, the car key, although a small accessory, affects the driving of the whole car. There is no electricity, so you don't have to go to the 4S shop for "high price" maintenance and replacement, and you can easily get it yourself. After all, the replacement parts in 4S stores are very expensive, and the labor cost is very high, so it is best to buy button cell yourself.
The operation is also very simple, just pull out the car key shell and replace it with a new battery. However, some batteries must be replaced immediately after replacement. Some new car key belts have many functions, but the remote control distance of ordinary batteries is shortened and can only be used at close range. This is something that many novice drivers are worried about.
How to choose the right button cell is the key. There is absolutely nothing wrong with buying a brand. For example, Funan is a famous battery brand in China. Funan Group launched the world's first graphene large-capacity button cell. Graphene technology has been widely used as a new technology, and its effect has been significantly improved. After 65,438+03 months of rigorous research and development, we explored the use of graphene materials with the best conductivity, 465,438+0 process and 265,438+0 patent to create a graphene button cell with excellent performance and higher stability.
Graphene supports lithium battery, and the battery performance is improved by 30%. Compared with the traditional 0.3mm steel shell thickness, the transmission should be only 0.23mm thinner. With the increase of 240mAh service time, the car key can be used for up to three years. In the ordinary battery induction car mode, the battery can be used for 3500 times without electricity, and the graphene button cell can be used for 4500 times. In contrast, the advantages are different. The complex environment of Leng Xia in the summer heat in winter will also give consideration to the stable power supply in the environment of -20C-60C, which is suitable for the car keys of traditional/new energy automobile brands such as Chery, Mercedes-Benz, BMW, Honda and Tesla.
The rise of domestic brands is multifaceted, with brands, technologies and prices, but this small button cell has accumulated enormous energy. In the future, no matter whether you are a novice or an old driver, you should pay attention to changing the battery. It is really easy to do it yourself. Saving money and trouble is the key!
2 electromagnetic clutch of automobile compressor
If the electromagnetic clutch of the car cannot be engaged, it will definitely lead to no pressure in the air conditioner compressor, because the electromagnetic clutch does not engage the air conditioner and the compressor does not rotate inside.
1, the electromagnetic clutch has abnormal sound. Abnormal clutch sound caused by improper installation of electromagnetic coil snap ring due to belt slip or clutch slip. The electromagnetic clutch is damaged. 2. The electromagnetic clutch is not engaged, which may be due to the large air gap of the electromagnetic coil and poor contact. Short circuit or open circuit 3 If the electromagnetic clutch is not disengaged, the air gap may not open.
Causes and solutions of non-start of automobile air conditioning compressor 1 The circuit fault or short circuit directly loses the power transmission path, and the electromagnetic clutch cannot control the working state of the compressor normally. Solution: Check the circuit with an electric meter, find out the fault point and carry out maintenance. 2. Insufficient refrigeration. Refrigerant and refrigeration oil are mutually soluble and pass through.
Check the pressure first. If the pressure is normal, check the circuit. Mainly check the pressure switch, air conditioning relay, front and rear lines, even air conditioning switch, car computer. If the pressure associated with the compressor is abnormal, there are many types. The method of using manifold pressure gauge group for diagnosis is to use high and low pressure gauges.
1 Abnormal sound of electromagnetic clutch, improper installation of electromagnetic coil snap ring due to belt slip or clutch slip, etc. , resulting in abnormal clutch sound and damage to the electromagnetic clutch. 2 The electromagnetic clutch is not engaged, which may be due to excessive air gap and poor line contact. 3. The electromagnetic coil is short-circuited or open-circuited.
The electromagnetic clutch of the compressor slips and the engine can be started. Turn on the air conditioner to check. If the electromagnetic clutch has abnormal sound or skidding, remove the electromagnetic clutch for inspection. If the wear is severely deformed, a new electromagnetic clutch should be installed.
There are nine kinds of compressors and clutches in cars. Fixed compressor 1 set, 2 variable compressors, 3 crankshaft connecting rod compressors, 4 crank piston compressors, 5 rotary vane compressors, 6 turbo compressors and 7 friction clutches. 8 hydraulic coupler 9 electromagnetic clutch.