As an electric vehicle owner, will have a feeling about the battery, it is a very expensive part of the electric vehicle, but also all the parts of the electric vehicle, the durability is relatively poor, as the three major parts of the electric vehicle, the motor can be the same as 10 years, the controller can be used for 8 years, and the battery can generally only be used for 3 years, or even shorter.
In fact, the battery has not always been so unsurable, after the electric vehicle has just been popularized, the durability of the battery is very good, generally can be used to about 5 years, and even some car owners, the battery can be used for seven or eight years, but many car owners have found that the current battery, durability is quietly deteriorating, then, what is the reason for the current electric vehicle battery, not as durable as before? As an insider, Xiao Xin will tell you where the "cat grease" is.
Electric vehicle batteries, what factors affect durabilityWhen you want to understand why the battery is not durable, you must understand, affecting the durability of the battery, and what factors are related, Xiaoxin can clearly tell you that it can directly affect the durability of the battery, there are mainly 3 major factors;
First of all, whether the use of the owner is a normative factor, the electric vehicle battery is a part that needs to pay attention to maintenance, if it is used unscrupulously, without any maintenance, there is some irregular use, and the charging and discharging methods that harm the battery will inevitably reduce the durability of the battery.
Secondly, the reaction of battery parts is different, as we all know, the battery is mainly composed of positive and negative plates, electrolytes, separators and other parts, among which the electrolyte of the lead-acid battery, if there is water loss, leads to the concentration of sulfuric acid in the electrolyte is too high, which will lead to the reduction of battery capacity, and will lead to corrosion of the plate grid, resulting in a decrease in battery life. Finally, the factor of battery material material, as the mainstream electric vehicle battery, mainly lead-acid batteries, it occupies a proportion of about 80% of the battery, and the battery's separator, cathode plate, are caused by lead materials, the density of lead, is also a factor that directly affects the battery storage capacity and durability. A set of comparisons, to see where the difference between the new and old batteries is, so why the durability of the battery is getting worse and worse, if there are some people, indeed do not pay attention to the maintenance of the battery, so that the battery life is shortened, this is indeed part of the reason, in addition, the battery, what is the reason for the decline in life, let's take a look at the appearance of a group of batteries, you can reveal the answer.
The 2 groups of batteries in the above figure, one group is produced in 2017, and one group is the battery produced in 2019, through comparison, we can see that the two are in the green part, in fact, there is a big difference, obviously the battery produced in 2017, the green shell part accounts for a larger proportion, and the green part, that is, the battery part composed of lead plates, which means that the battery in 2017 is obviously more sufficient in the lead plate material, then, and the lead plate material is a very important factor that affects the battery life.
This also explains that the current electric vehicle battery, why the life of the general decline, many people are saying, because of the owner's reasons, or because the battery implemented the environmental protection of the "de-cadmium" reason, of course, this is part of the reason, Xiao Xin feels that the biggest reason, is the "reduction" in the material, resulting in a decline in battery durability. How to choose a more durable electric vehicle battery? So, after the decline in general battery life, how should car owners choose to get a more durable battery? As a practitioner of electric vehicles, Xiaoxin gives 3 suggestions for your reference.
The first point: if you want a longer life battery, I recommend choosing a graphene battery, black gold battery or lithium battery, in general, the life of lithium battery can be used to 5 years, and graphene battery and black gold battery can be used to about 4 years, are longer than ordinary lead-acid battery life.
The second point: when choosing a battery, pay attention to large brands, the current domestic lead-acid battery brand, mainly Chaowei and Tianneng occupy the advantage, they do better in quality control, relatively speaking, the battery life will be more durable, however, in terms of price, it will generally be more expensive than the second-tier brand per group of batteries about 50 yuan.
The third point: do not choose the second level, three level or refurbished battery, some car owners in the replacement of the battery, do not pay attention to the battery, replaced by the second level, three level battery, and even some batteries are directly refurbished by small workshops, the life of these batteries is generally only about 60% of the new battery, the battery is not durable is very normal.
Xiao Xin summary: The current battery is not durable is an objective fact, this point is not to be denied, but the reasons it causes, in fact, are multifaceted, the main factor is that the battery material is "insufficient", and this deficiency, on the one hand, because the battery has been playing the "price war" in recent years, has not been generally increased in price, on the other hand, the current electric vehicle is limited by the new national standard, the whole vehicle is only 55 kg, the material "insufficient" is mainly to reduce the battery weight, so that the weight of the electric vehicle can be configured to other parts.
So, do you think battery durability has declined now? What are your thoughts on the decline in battery durability? Comments are welcome.