This article is derived from the original article of Big Bit News
After the 1940s, power tools have become an international production tool, and their penetration rate has increased significantly. They have now become one of the indispensable household equipment in the family life of developed countries. my country's power tools began to enter mass production in the 1970s, and flourished in the 1990s, and the total industrial scale continued to expand. In the past two decades, China's power tool industry has continued to develop in the process of undertaking the transfer of international division of labor. However, despite the increase in the market share of domestic brands, they have not yet shaken off the situation of large multinational companies occupying the high-end power tool market.
Electric tool market analysis
Now the power tool market is mainly divided into handheld tools, garden tools and other tools. The entire market requires power tools to ensure stability and safety, have more power and torque, less noise, have smart electronic tool telemetry, and the technology of power tools is gradually changing, and the engine has higher torque and power, and is more efficient. Motor drive, longer battery life, compact and small size, fail-safe design, IoT telemetry, fail-safe design.
In response to the new market demand, major manufacturers are constantly optimizing their technology. Toshiba has brought LSSL (no low speed sensor) technology, which can control the motor at low speed without a position sensor. LSSL can also improve the efficiency of the inverter and the motor. , Reduce power consumption.
In general, today's power tools are gradually developing toward lighter, more powerful, and continuously increasing unit weight. At the same time, the market is actively developing ergonomic power tools and power tools that do not contain harmful substances. With the continuous development of science and technology, power tools, as a tool with extended manpower, will play a greater role in the national economy and people's lives, and my country's power tools will be updated.
Wide range of applications of lithium batteries
With the development trend of miniaturization and convenience of electric tools, lithium batteries are more and more widely used in electric tools. The use of lithium batteries in power tools has grown from 3 strings to 6-10 strings. The increase in the number of single products used has brought a larger increase. Some power tools are also equipped with spare batteries.
Regarding the lithium batteries used in power tools, there are still some misunderstandings in the market. They believe that automotive power battery technology is a higher, sophisticated and cutting-edge technology. In fact, they are not. The lithium batteries used in power tools need to be used in extreme high and low temperature environments. , And to adapt to strong vibration, fast charging and quick release, and the protection design is relatively simple, these requirements are not lower than the vehicle power battery, so it is actually very challenging to make high-performance, high-rate batteries. It is precisely because of these harsh conditions that it was not until recent years that major international power tool brands began to use domestic lithium batteries in batches after years of verification and verification. Because power tools have very high requirements on batteries and the certification phase is relatively long, most of them have not entered the supply chain of power tool companies with large international shipments.
Although lithium batteries have broad prospects in the power tool market, they are better than power batteries in terms of price (10% higher than power batteries), profit, and remittance speed, but international power tool giants choose lithium battery companies Very picky, not only requires a certain scale in production capacity, but also requires mature high-nickel cylindrical NCM811 and NCA production processes in terms of R&D and technical strength. Therefore, for companies that want to transform into the power tool lithium battery market, without technical reserves, it is difficult to enter the supply chain system of the international power tool giants.
In general, before 2025, the application of lithium batteries in power tools will grow rapidly. Whoever can occupy this market segment first will be able to survive the accelerated reshuffle of power battery companies.
At the same time, the lithium battery needs corresponding protection. Neusoft Carrier once brought the power tool lithium battery protection board in the speech. The reason why the lithium battery needs protection is determined by its performance. The material of the lithium battery itself determines that it cannot be overcharged, overdischarged, overcurrent, short circuited, and discharged at ultra-high temperature. In addition, the batteries do not have absolute consistency. After the batteries are formed into strings, the capacity mismatch between the batteries exceeds a certain threshold, which will affect the actual usable capacity of the entire battery pack. To this end, we need to balance the mismatched batteries.
The main factors for the imbalance of the battery pack come from three aspects: 1. Cell manufacturing, sub-capacity error (equipment capability, quality control), 2. Cell assembly matching error (impedance, SOC status), 3. Cell self-discharge Uneven rate [cell process, impedance change, group process (process control, insulation), environment (thermal field)].
Therefore, almost every lithium battery must be equipped with a safety protection board, which is composed of a dedicated IC and several external components. It can effectively monitor and prevent damage to the battery through the protection loop, and prevent the burning caused by overcharge, overdischarge and short circuit. Dangers such as explosion. As each lithium-ion battery has to install a battery protection IC, the lithium battery protection IC market is gradually increasing, and the market prospect is very broad.
Post time: Nov-16-2021