标签： 上海娱乐

　　Recently, a brand-new concept car was officially released. The new car is based on the design of steering column and brake caliper, aiming at achieving a higher level of safety redundancy. Let’s see what’s special about this car.

　　It can be seen that this concept car is based on looking up at U8. But what it actually wants to convey to us is a brand-new security technology. Compared with the traditional car, it has neither steering column nor brake caliper, but it can turn, turn around and brake.

　　So how does it achieve these functions?

　　As we all know, the steering angle of the steering wheel is controlled by the steering gear and the tie rod when the conventional vehicle is steering, so as to realize the steering of the vehicle. Looking up at this easy-to-square concept car, the required steering angle is calculated according to the driver’s steering intention, and different torques are applied to the left and right front wheels to deflect the steering tie rod and realize wheel steering. Through the fusion control of rear axle differential and front axle differential, the vehicle stability during steering is realized.

　　And at this stage, relying on the powerful motor, the average steering control error of this concept car is less than 3%, which is not much different from the traditional mechanical steering control experience. In addition, through the fusion control of rear axle differential and front axle differential, the vehicle stability during steering can be realized. Therefore, in some emergency steering situations, the stability close to the traditional steering can be achieved.

　　The principle is actually very simple, but in the whole steering process, it is necessary to control the four-quadrant torque of the steering wheel more finely, so as to realize the accurate control of vehicle drive, steering wheel angle and vehicle yaw angle, and the technical difficulty is actually very high. And in order to enable users to continue the operation logic of conventional vehicles when using differential steering technology, it is also necessary to optimize the steering operation experience of the whole vehicle for many times.

　　The traditional braking method is to push the friction plate to clamp the brake disc through the hydraulic cylinder to generate friction torque and realize braking. Looking up at the concept car, the braking is realized by controlling four driving motors to generate electromagnetic resistance torque by reverse dragging.

　　Easy Sifang has four high-power motors with peak power of 220-240kW, which is the basis for its calipers-free braking. Relying on these four powerful and independent motors, the maximum braking deceleration of 1.0g can be achieved, and the maximum friction force between each tire and the ground can be accurately calculated, the braking torque of four wheels can be distributed in real time, and the optimal slip rate of tires can be accurately controlled to keep the vehicle with the best braking performance. In addition, the response speed of this innovative braking system only needs 20 milliseconds, far exceeding the industry level of hydraulic braking of 200 milliseconds.

　　Some people may ask, what is the significance of braking and steering without relying on mechanical structure for a car? First of all, this technology can play a great role in the small probability emergency when the braking system or steering system of the vehicle fails to work, helping the driver to realize the deceleration braking and turning of the vehicle and avoid accidents. Don’t underestimate these small probability events, which may cause extremely serious consequences.

　　Looking up, I think that since I want to build a high-end, I need these security redundancies. In any case, we should praise the behavior of broadening the safety boundary of the whole vehicle and pushing the safety of the vehicle to a new height. The appearance of this concept car not only gives the automobile industry a new idea in safety, but also creates a new direction of integrated control of chassis and power technology, which provides more possibilities for automobile development.

On March 27th, Shenzhen Bike Power Battery Co., Ltd. released a new generation of all-polar-ear series small power battery products, aiming at the three market segments of smart life, power tools and micro-traffic, so as to solve the shortcomings of smart terminals such as insufficient battery life, insufficient power and slow charging, and help the user experience to upgrade in an all-round way. This new product adopts the same full-lug design as the large cylindrical battery, and explores a new path to improve the high-power performance of lithium batteries.

Bike Power has been focusing on the research and development of cylindrical lithium batteries for more than 20 years, and has successively developed three generations of small power batteries. Different from the first-generation traditional unipolar ear structure and the second-generation bipolar ear structure, BIC’s third-generation small power battery adopts full-ear design, showing six characteristics of high power, low internal resistance, low temperature rise, fast charging, long cycle and high capacity. The maximum charging current is increased to 5C, the maximum discharging current is increased to 25C, and the service temperature is widened to-40℃ ~ 80 C, which solves the pain point of high internal resistance in the traditional structure of cylindrical batteries.

The three new products released by BIC Power accurately solve the pain points of market segments with different characteristics. INR21700-40D was born to meet the most demanding application scenarios of professional-grade electric tools, with higher charge-discharge rate, reaching continuous discharge of 100A and pulse discharge of 140A, which can be fully charged in 12 minutes, with a life span of 600 weeks. Compared with the traditional 4.0Ah power tool lithium battery, the internal resistance is reduced by 80%, the discharge current is increased by 120%, and the cycle life is increased by 140%.

INR21700-45D serves consumer electronics such as intelligent cleaning tools, micro-trip application scenarios such as household electric tools and electric motorcycles, and gives consideration to high-capacity and high-power performance, thus achieving the purpose of prolonging battery life and increasing energy utilization, with a continuous discharge of 70A, an internal resistance of only 3.4mΩ, and full charge in 15 minutes, easily coping with various intelligent life scenarios.

INR21700-50D is prepared for electric motorcycles adapted to special scenes such as beaches, bushes, racing professional tracks, etc. It has a higher capacity of 5.0Ah, can discharge continuously for 60 years, and can discharge with pulses of 100A, meeting the requirements of long battery life and instantaneous high current acceleration of high-speed electric motorcycles. Support ultra-low temperature -40℃ discharge; 3.6mΩ internal resistance to achieve efficient heat dissipation, 15 minutes to charge 80%, accelerate the electrification of micro-traffic field, to achieve smooth and worry-free.

Based on the whole series of three new products, BIC battery will exert its strength in both professional and consumer markets at the same time, constantly broadening the breadth and depth of the deepening industry and bringing a continuous refreshing experience to end users.

Song Huajie, the person in charge of small power product development of BIC battery, said: BIC Power has always maintained a keen insight into market changes, and the technology-enabled lifestyle has made the terminal equipment driven by electricity enter every corner of life. In the future, mobile intelligent terminal devices with stronger computing power and richer functions will be more used in our daily life. As one of the core components, the performance of lithium-ion battery determines the "shape" of intelligent terminal products and the "boundary" of usage scenarios. The release of the new generation of all-polar-ear series small power batteries is not only a strong proof of the technical strength of Bigram batteries, but also our determination to empower more extreme scene needs with technological innovation and add more yards to market applications and terminal experience.

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