New infrastructure leads a new wave of development.
Ding, General Manager of Power Exchange Division of Shanghai Jiuxing Energy Technology Co., Ltd., delivered a keynote speech entitled "Technical Scheme of Electric Heavy Truck Top Matching Exchange". The following is the real record of the spokesman:
Ding, General Manager of Power Exchange Division of Shanghai Jiuxing Energy Technology Co., Ltd.
I have drawn up several topics myself, and I want to discuss them with you from these angles today.
Why do electric heavy trucks need to be replaced? Why do we use the method of hoisting to exchange electricity instead of the ordinary side exchange method? In addition, in the progress of hoisting and power exchange, what products did Jiuhang make? Let's talk about the scene and project management of hoisting and power exchange first, and briefly introduce Jiuhang if you have time.
Why did I give up the traditional side power exchange form in the field of heavy truck power exchange? Because we started the commercial vehicle by changing electricity from the side of the bus, and at this time we began to change electricity with the top crane. On the left is the practical horizontal power exchange station launched in 20 18, and on the right is the experimental station of hoisting power exchange station launched in 20 19. We know that a robot is needed to hang the lateral battery on both sides of the girder, which is mainly characterized by two large batteries and two or so power exchange equipment; The roof replacement may be that a battery may be placed behind the trunk driver's building, and a lifting device on it will complete the battery removal.
I want to talk about it. Let's share some characteristics of horizontal and lifting power exchange from several dimensions such as technical difficulty, reliability, power exchange cost, floor space and power exchange time.
When we change electricity from the side, no matter how early we take the form of pulling, we always pull out the side of the battery and put it on the charging rack by rotating and lifting. Such equipment has higher requirements for the whole vehicle, and the whole vehicle should be kept level and affected by tire pressure. If two or three tons of batteries are removed, the attitude of the whole vehicle will change greatly, so the success rate of equipment replacement or technical requirements are relatively high, and the overall technical reliability is relatively not so high.
If it is hoisting to change electricity, the top hoisting to change electricity is too common and the technology is relatively mature. Ordinary workshops are all cranes. This technology is relatively simple, with high reliability and low cost.
From the perspective of floor space, it is hoped that the power exchange station on the side is basically over 300 square meters, while the power exchange station on the top is less than 200 square meters.
From the point of view of power exchange time, relatively speaking, the side time is slightly longer. This is also the reason why we choose to change the crane to electricity, because of mature technology, high reliability and low cost.
The following are some attempts by nine planets to change electricity during the whole hoisting process. This product is called power battery box assembly. At that time, I had two requirements when defining products for the team: 1. This product should not put too many demands on the car. You can ask the car factory to bring it here like a standard part; 2. This product must be compatible with various models and specifications of battery packs.
At this time, we saw the picture on the right. The upper part is the standard battery box assembly, and the side is the bottom trailer assembly. There is no need to change the structure of the car beam, and the upper part is unified, so that my power station can basically be compatible with various models, whether it is mixers, mechanical trucks or tractors, and I can basically be compatible with the framework of electronic manufacturers at all times.
In addition, this framework has another advantage. According to different scenarios, sometimes the power is higher, and some are lower, because the compatibility guarantee is still the top. At present, the main engine plants that use this product are Jiefang, Futian, Hongyan, Beiben, Dongfeng and Valin. , are the top OEMs who are using this product now. If they have a replacement car.
The reliability of this product is actually a great challenge, including the reliability of electrical connection. At the beginning of the design, we made a full analysis and passed the national standard experiment. In addition, after the completion of this model, the real vehicle ran 65,438+00,000 kilometers in Xiaogan proving ground, which ensured the reliability of market launch. This product has about 500 electric heavy trucks running in the market.
This is the experiment we actually did in Xiaogan military training ground. Run down 10000 km, which is basically equivalent to the strength of 500000 km of ordinary roads. After running, there is basically no abnormality in frame strength, connection reliability and electrical connection stability.
This piece wants to say that nine planets IV is this power station (see photo). We use heavy trucks to exchange electricity, and the vehicle is difficult to adjust like a passenger car. Since it is difficult to adjust, I will not adjust it. You can see that the whole entrance passage of my power station is a plane, with nothing, no positioning and nothing else. If you want to find the position of the battery, you must have adaptive technology to find the positioning point accurately.
At this time, we change the power supply at the top, and the position of the battery can be accurately found through the adaptive floating device; In addition, this is a curved roof design, and the wind resistance can reach 14. According to the number of vehicles serving different scenes, changing power stations is a matter of length. In fact, the force changing time is about 3 minutes, the actual force changing has been completed 36,000 times, and the success rate of changing points is almost 100%. The occupied area is because the occupied area of the equipment ranges from 120 to 180 according to the length of the power station.
Yang Zong has just explained the application scenarios and cases in detail. I want to say one thing about Beijing Green Mine Intelligent Power-changing Heavy Truck Project. At present, 1 power station has been operated, 3 power stations have been built, 200 vehicles have been ordered, and 30 heavy trucks have been operated. Safe operation exceeds 6,543.8+0,000 kilometers. Through the power exchange mode, the daily mileage of the vehicle can reach 8 million compared with that of the fuel vehicle.
Let me introduce nine planets, Shanghai nine planets Energy Technology Co., Ltd.
20 14 was established in Shanghai; 2065438+2006 65438+ 10 undertook the automation power station system project of Shanghai Yangshan Phase IV Deepwater Terminal, one of the top ten projects in Shanghai in 2065438+2006, and won the Shanghai Zhangjiang National Independent Innovation Special Development Fund; 2065438+In August 2008, Shanghai State Power Investment Group Company became a shareholder; Shanghai nine planets entered the field of power heavy truck exchange; 2065438+In September 2008, Harbin Communications Group Tong Yuan Power Supply Co., Ltd. was established as a joint venture with Harbin Communications Group; 20 18 10 signed a strategic cooperation agreement with Guiyang municipal government to build a production testing base in Guizhou, nine planets; 20 19 1 A joint venture with 8 companies including State Grid to establish the State Grid Smart Energy Transportation Technology Innovation Center; 2065438+March 2009, the first intelligent electric heavy truck power station independently developed by nine planets was officially released, and won the title of "Shanghai High-end Intelligent Equipment, the first breakthrough project"; 2065438+In June 2009, a joint venture was established with Guodian Investment Co., Ltd. to establish a fusion nine-line tourism company; Carry out vehicle rental business; 20 19 10 nine planets invested in the construction of Baoan Highway Station, the largest charging station in Shanghai, and put it into operation; 20 19, 12, the world's first modular intelligent heavy truck power station commercial demonstration project was officially put into production; 20 19 12 nine planets successfully entered the core application list of China southern power grid electric vehicle service company; In February 2020, nine planets successfully entered the list of core suppliers of State Grid Electric Vehicle Service Company; In April 2020, Hongqiao Airport Charging Station, the first special charging station for airport taxi parking lot in China, was officially put into operation.
At present, there are three major businesses in nine planets, one is the charging business, and the other is the electricity exchange business. The business department of the electric exchange is the business department I am in charge of now, and there is a taxi operating company called travel business below.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.