On the endless expanses of the Internet, I came across an extremely entertaining article about how a couple of Americans "ransacked" the battery pack of a Tesla Model S.
Tesla Motors is the creator of truly revolutionary eco-vehicles, which are not only mass-produced, but also have unique characteristics that allow them to be used literally every day. Today we take a look inside the battery of a Tesla Model S electric car, find out how it works and reveal the magic of this battery's success.
According to the North American Environmental Protection Agency (EPA), the Model S only needs a single charge of 85 kWh batteries to travel more than 400 km, which is the most significant indicator among similar vehicles on the specialized market. To accelerate to 100 km / h, the electric car needs only 4.4 seconds.
The key to the success of this model is the availability of lithium-ion batteries, the main components of which are supplied for Tesla by Panasonic. Tesla batteries are steeped in legends. And therefore, one of the owners of such a battery decided to violate its integrity and find out what it is inside. By the way, the cost of such a battery is 45,000 USD.
The battery is located in the underbody, giving Tesla a low center of gravity and excellent handling. It is attached to the body by means of brackets.
Tesla battery. We disassemble
The battery compartment is formed by 16 blocks, which are connected in parallel and shielded from the environment by means of metal plates, as well as a plastic cover that prevents the ingress of water.
Before completely disassembling it, the electrical voltage was measured, confirming the working condition of the battery.
The battery assembly is characterized by high density and precise fit of parts. The entire picking process takes place in a completely clean room, using robots.
Each block consists of 74 cells, very similar in appearance to simple finger-type batteries (Panasonic lithium-ion cells), divided into 6 groups. At the same time, it is almost impossible to find out the scheme of their placement and operation - this is a big secret, which means that it will be extremely difficult to make a replica of this battery. We are unlikely to see a Chinese analogue of the Tesla Model S battery!
The positive electrode is graphite, and the negative one is nickel, cobalt and alumina. The indicated amount of electrical voltage in the capsule is 3.6V.
The most powerful battery available (its volume is 85 kWh) consists of 7104 such batteries. And it weighs about 540 kg, and its parameters are 210 cm long, 150 cm wide and 15 cm thick. The amount of energy generated by just one unit out of 16 is equal to the amount produced by a hundred batteries from laptop computers.
When assembling its batteries, Tesla uses elements produced in various countries, such as India, China, Mexico, but the final revision and assembly are made in the United States. The company provides warranty service for its products for up to 8 years.
Thus, you learned what the Tesla Model S battery consists of and how it works. Thank you for your attention.
For understanding, I will explain that this battery pack consists of several thousand of the most common and very common lithium-ion batteries of the 18650 type. These power supplies are great for powerful flashlights, or for back-up recharging of gadgets through a special adapter. And if anyone does not know Lithium Ion batteries, if damaged, are prone to spontaneous combustion and explosions, a column of fire from a Tesla that exploded in Los Angeles due to a battery shot through during a chase will be visible in Hawaii.
(the average: 4,83
out of 5)
Tesla Motors is the creator of truly revolutionary eco-vehicles, which are not only mass-produced, but also have unique characteristics that allow them to be used literally every day. Today we take a look inside the Tesla Model S battery, find out how it works and uncover the magic of this battery's success.
1. According to the North American Environmental Protection Agency (EPA), Model S requires one charge of 85 kWh batteries to travel more than 400 km, which is the most significant indicator among similar vehicles on the specialized market. To accelerate to 100 km / h, the electric car needs only 4.4 seconds.
2. The key to the success of this model is the availability of lithium-ion batteries, the main components of which are supplied for Tesla by Panasonic. Tesla batteries are steeped in legends. And therefore, one of the owners of such a battery decided to violate its integrity and find out what it is inside. By the way, the cost of such a battery is 45,000 USD.
The battery is located in the underbody, giving Tesla a low center of gravity and excellent handling. It is attached to the body by means of brackets.
Tesla battery. We disassemble
3. The battery compartment is formed by 16 blocks, which are connected in parallel and shielded from the environment by means of metal plates, as well as a plastic cover to prevent water ingress.
5. Before completely disassembling it, the electrical voltage was measured, confirming the working condition of the battery.
The battery assembly is characterized by high density and precise fit of parts. The entire picking process takes place in a completely clean room, using robots.
6. Each block consists of 74 cells, very similar in appearance to simple finger-type batteries (Panasonic lithium-ion cells), divided into 6 groups. At the same time, it is almost impossible to find out the scheme of their placement and operation - this is a big secret, which means that it will be extremely difficult to make a replica of this battery. We are unlikely to see a Chinese analogue of the Tesla Model S battery!
The positive electrode is graphite, and the negative one is nickel, cobalt and alumina. The indicated amount of electrical voltage in the capsule is 3.6V.
7. Tesla battery cooling system.
8. The most powerful battery available (its volume is 85 kWh) consists of 7104 such batteries. And it weighs about 540 kg, and its parameters are 210 cm long, 150 cm wide and 15 cm thick. The amount of energy generated by just one unit out of 16 is equal to the amount produced by a hundred batteries from laptop computers.
9. When assembling its batteries, Tesla uses elements produced in various countries, such as India, China, Mexico, but the final revision and assembly are made in the United States. The company provides warranty service for its products for up to 8 years.
Tesla Motors is the creator of truly revolutionary eco-vehicles, which are not only mass-produced, but also have unique characteristics that allow them to be used literally every day. Today we take a look inside the battery of a Tesla Model S electric car, find out how it works and reveal the magic of this battery's success.
According to the North American Environmental Protection Agency (EPA), the Model S only needs a single charge of 85 kWh batteries to travel more than 400 km, which is the most significant indicator among similar vehicles on the specialized market. To accelerate to 100 km / h, the electric car needs only 4.4 seconds.
The key to the success of this model is the availability of lithium-ion batteries, the main components of which are supplied for Tesla by Panasonic. Tesla batteries are steeped in legends. And therefore, one of the owners of such a battery decided to violate its integrity and find out what it is inside. By the way, the cost of such a battery is 45,000 USD.
The battery is located in the underbody, giving Tesla a low center of gravity and excellent handling. It is attached to the body by means of brackets.
Tesla battery. We disassemble
The battery compartment is formed by 16 blocks, which are connected in parallel and shielded from the environment by means of metal plates, as well as a plastic cover that prevents the ingress of water.
Before completely disassembling it, the electrical voltage was measured, confirming the working condition of the battery.
The battery assembly is characterized by high density and precise fit of parts. The entire picking process takes place in a completely clean room, using robots.
Each block consists of 74 cells, very similar in appearance to simple finger-type batteries (Panasonic lithium-ion cells), divided into 6 groups. At the same time, it is almost impossible to find out the scheme of their placement and operation - this is a big secret, which means that it will be extremely difficult to make a replica of this battery. We are unlikely to see a Chinese analogue of the Tesla Model S battery!
The positive electrode is graphite, and the negative one is nickel, cobalt and alumina. ...
The most powerful battery available (its volume is 85 kWh) consists of 7104 such batteries. And it weighs about 540 kg, and its parameters are 210 cm long, 150 cm wide and 15 cm thick. The amount of energy generated by just one unit out of 16 is equal to the amount produced by a hundred batteries from laptop computers.
When assembling its batteries, Tesla uses elements produced in various countries, such as India, China, Mexico, but the final revision and assembly are made in the United States. The company provides warranty service for its products for up to 8 years.
Thus, you learned what the Tesla Model S battery consists of and how it works. Thank you for your attention!
We have partially covered the configuration of the battery Tesla model s with a capacity of 85 kW * h. As a reminder, the main battery element is the company's lithium-ion battery cell. Panasonic, 3400 mAh, 3.7 V.
Panasonic cell 18650
The figure shows a typical cell. In reality, Tesla's cells are slightly modified.
Cell data parallel connect in groups of 74... When connected in parallel, the voltage of the group is equal to the voltage of each of the elements (4.2 V), and the capacity of the group is equal to the sum of the capacities of the elements (250 Ah).
Further six groups connect sequentially into the module... In this case, the voltage of the module is summed up from the voltages of the groups and is equal to approximately 25 V (4.2 V * 6 groups). The capacity remains 250 Ah. Finally, modules are connected in series into a battery... The battery contains 16 modules in total (total 96 groups). In this case, the voltage of all modules is summed up and amounts to 400 V (16 modules * 25 V).
The load for this battery is an asynchronous electric drive with a maximum power of 310 kW. Since P = U * I, in the nominal mode at a voltage of 400 V, a current flows in the circuit I = P / U = 310,000 / 400 = 775 A. At first glance, it may seem that this is a crazy current for such a "battery". However, do not forget that with a parallel connection according to the first Kirchhoff's law I = I1 + I2 +… In, where n is the number of parallel branches. In our case, n = 74. Since we consider the internal resistances of the cells inside the group to be conditionally equal, then the currents in them will be the same. Accordingly, a current flows directly through the cell In = I / n = 775/74 = 10.5 A.
Is it a lot or a little? Good or bad? In order to answer these questions, let us turn to the discharge characteristic of a lithium-ion battery. American craftsmen disassembled the battery and carried out a series of tests. In particular, the figure shows oscillograms of voltages during the discharge of a cell taken from a real Tesla model s, currents: 1A, 3A, 10A.
The spike on the 10A curve is caused by manually switching the load to 3A. The author of the experiment solved one more problem in parallel, we will not dwell on it.
As can be seen from the figure, a discharge with a current of 10 A fully satisfies the requirements for cell voltage. This mode corresponds to a 3C curve discharge. It should be noted that we took the most critical case when the engine power is at its maximum. In reality, taking into account the very use of a two-motor drive with an optimal gear ratio of gearboxes, the car will operate with a discharge of 2 ... 4 A (1C). Only at moments of very sharp acceleration, when driving uphill at high speed, the cell current can peak at 12 ... 14 A.
What other benefits does it provide? For a given load in the case of a direct current, the cross-section of the copper conductor can be chosen 2 mm.kv. Tesla motors kills two birds with one stone. All connecting conductors also function as fuses. Accordingly, there is no need to use an expensive protection system, additionally to use fuses. The connecting conductors themselves melt in the event of an overcurrent due to the small cross-section and prevent an emergency. We wrote about this in more detail.
In the figure, the conductors 507 are the same connectors.
Finally, consider the last issue that is exciting the minds of our time, and causing a wave of controversy. Why does Tesla use lithium-ion batteries?
I will make a reservation right away that I will express my subjective opinion on this particular issue. You can disagree with him)
Let's carry out a comparative analysis of different types of batteries.
Obviously, the lithium-ion battery has the highest specific rates to date. The best battery in terms of energy density and weight / size ratio does not yet exist in mass production, alas. That is why in Tesle it turned out to make such a balanced battery, providing a cruising range of up to 500 km.
The second reason, in my opinion, is marketing. All the same, on average, the resource of such cells is about 500 charge-discharge cycles. This means that with active use of the car, you will have to replace the battery after a maximum of two years. Although, the company really does.
To this car, of course, of course, there has been a rather controversial attitude lately. Many people discuss what he is, others. There are people who consider the Tesla car an excellent element of a PR campaign, built on the sale of something that has existed for a long time, but it never occurred to anyone to make a car out of this, and it has few prospects of the type and even exists
But let's leave this controversy "overboard" and look at the main element of this car - the batteries. There were people who were not too lazy and did not squeeze a certain amount of money and took and sawed off the battery from the car.
This is how it looked
Tesla Motors is the creator of truly revolutionary eco-vehicles, which are not only mass-produced, but also have unique characteristics that allow them to be used literally every day. Today we take a look inside the battery of a Tesla Model S electric car, find out how it works and reveal the magic of this battery's success.
According to the North American Environmental Protection Agency (EPA), the Model S only needs a single charge of 85 kWh batteries to travel more than 400 km, which is the most significant indicator among similar vehicles on the specialized market. To accelerate to 100 km / h, the electric car needs only 4.4 seconds.
The key to the success of this model is the availability of lithium-ion batteries, the main components of which are supplied for Tesla by Panasonic. Tesla batteries are steeped in legends. And therefore, one of the owners of such a battery decided to violate its integrity and find out what it is inside. By the way, the cost of such a battery is 45,000 USD.
The battery is located in the underbody, giving Tesla a low center of gravity and excellent handling. It is attached to the body by means of brackets.
Tesla battery. We disassemble
The battery compartment is formed by 16 blocks, which are connected in parallel and shielded from the environment by means of metal plates, as well as a plastic cover that prevents the ingress of water.
Before completely disassembling it, the electrical voltage was measured, confirming the working condition of the battery.
The battery assembly is characterized by high density and precise fit of parts. The entire picking process takes place in a completely clean room, using robots.
Each block consists of 74 cells, very similar in appearance to simple finger-type batteries (Panasonic lithium-ion cells), divided into 6 groups. At the same time, it is almost impossible to find out the scheme of their placement and operation - this is a big secret, which means that it will be extremely difficult to make a replica of this battery. We are unlikely to see a Chinese analogue of the Tesla Model S battery!
The positive electrode is graphite, and the negative one is nickel, cobalt and alumina. The indicated amount of electrical voltage in the capsule is 3.6V.
The most powerful battery available (its volume is 85 kWh) consists of 7104 such batteries. And it weighs about 540 kg, and its parameters are 210 cm long, 150 cm wide and 15 cm thick. The amount of energy generated by just one unit out of 16 is equal to the amount produced by a hundred batteries from laptop computers.
When assembling its batteries, Tesla uses elements produced in various countries, such as India, China, Mexico, but the final revision and assembly are made in the United States. The company provides warranty service for its products for up to 8 years.
Thus, you learned what the Tesla Model S battery consists of and how it works.
Another interesting thing about Tesla: here's to you, and here's yourself
