Electric tour important component quality analysis

Electric tour buses currently reflected in the quality problems, the battery is the most, because the quality of the battery , the speed ultra GB , electrical power is too large to be a electric green car fundamental solution to these problems.
Resulting in poor quality for the following reasons :
1 , the vehicle motor power and battery capacity asymmetric configuration
Current electric tour buses , electric motorcycles, electric cars are mostly motor DC motor to a common hub motor , for example, the general efficiency is not high , brushed DC motor , and now the actual motor efficiency is very low, then the power voltage without changing its normal operating current is bound to increase . In this case , the actual input current of the motor requires a great inadvertently inevitably increase the battery discharge current. That is to ensure that electric vehicle speed , motor power is bound to increase . Motor starting current is generally normal driving current 3 to 5 times , uphill driving current of the motor current is three times the normal , which is a big gap .
Then there are brushless , brushed DC motors do not use a lot of the reduction gear , electric sightseeing car the direct use of electronic controller means the initial speed to the rated speed of the motor , such as 180 rpm -200 rev / min , so that the climbing pole load performance poor, working current greater damage to the battery plates , a direct result of decreased battery life and capacity .
2, the battery quality is poor
Powered rechargeable battery can be divided into two categories -and -start type for electric tour buses , boats collectively various battery -powered batteries , which requires a large current discharge can to accommodate traction motor start, acceleration load climbing requirements and other conditions . The currently used lead-acid batteries are slowly filling slow type , if the quick release is fast charging short life .
As the vehicle with the battery included in vehicle quality of its quality in other words to buy a new car , the battery replacement to reach the electric escort car commitment period , therefore, to take the vehicle auxiliary battery factory floor and had to pay after the guarantee period approach to the battery plant was ” baojia guilt” actually helpless.
3 , traffic , start , low speed, the motor current is large
Electric tour buses in the city riding , need regular stop , start, when driving a car fuel throttle to go out and accelerate quickly , speed up the spin motor controller to the most high-end ( speed ) , you know, the motor start to accelerate from a standstill when the output current of the battery is several times larger than the normal operating current exceeds the battery capacity, would surely damage the battery , the new battery can still withstand a few times , and when the battery life using 50% or 30 % Life time , can not withstand the impact of such a current .
4 , the quality of the charger and charging issues
Quality is good or bad for the battery charger is a great relationship longevity , universal electric lifting car charger package on the market today with eight months or even six months, because the charger price. Charger manufacturer price to win , OEMs to price orders. To reduce this , the charger manufacturer -order low- quality components , specifications, selection, ease of design and other causes of this situation, so there is ” not bad but the battery charge and the bad ,” one said unreasonable. In principle, should be equipped with the appropriate battery charger , battery and liquids such as colloidal battery is different, poor liquid and liquid -rich are also different , so the emphasis on quality of the battery manufacturers want their manufacture or optional battery charger is this factor.
5 , the controller quality problems
Now users complain controller life is short, easy to bad , because no more than a few , because the pursuit of low cost, in the design as simple as possible , as far as possible selection of low-cost components , and then have to involve motor power , current issues , because the controller is part of the specification model selection is based on the theory of electrical power , voltage and current above , then the efficiency of the motor problem ignore or do not pay attention , then the controller in practical work . Components are exposed to more than the original design of the current limit , coupled with in situ electric cars start to accelerate from rest to a top speed of rotation of the cyclist’s a few ms ( mm / sec ) between its current exceeds the electric garbage trucks design several times , so-called degree of experience is destructive .
Optimized electric tour vehicle design , testing the actual motor power, efficiency and vehicle speed , to ensure that the national standard allowed under the conditions of production. In addition to timely promotion, improved some of the GB parameters , in order to the national standard, and demand market demand and coordination between technology licensing in order to garbage vehicle achieve the best , strive for perfection.