Traditional cars have “three big parts”. Similarly, new energy vehicles have “three power systems”, which are batteries, motors, and electric controls. As the “energy” source of new energy vehicles, the power battery system is usually composed of batteries, battery management systems, cooling systems, wiring harnesses, housings, and structural components. Here, the battery management system (hereinafter collectively referred to as BMS) is a very important part of the battery system, rather than directly under the "whole vehicle-level" components. Generally speaking, at present, BMS is only a secondary component rather than a primary component.

So what is a primary and secondary component? An example can be given. For example, if an auto manufacturer wants to purchase air conditioning in a vehicle, then the entire on-board air conditioning system is a first-class component, while the evaporator of the air-conditioning system is a second-level component, and the aluminum plate of the evaporator is a three-level component. .

Having said so much, what is the role of this component level division? This requires that from the standard, each factory has its own standard, and it is the standard of parts and components of the main engine plant that is closely related to the consumers. Because the mainframe factory is directly facing the consumer groups, the quality of the products is determined to some extent. The survival condition of the host plant, if the selection of parts and components manufacturers can not be used, then the host plant is able to use but also to ensure how long it can be used, so, in general, the standard range of the host plant than the parts manufacturers Some more. Consumers buy a car, which brand to choose, consider more quality, and quality is behind the standard.

If BMS is a secondary component, its importance to new energy vehicles cannot be reflected. The development of BMS, in a sense, will also be limited.

The role of BMS in new energy vehicles is huge, and here it goes without saying that according to Gasgoo New Energy, Mr. M. Bischoff, executive director of electric traffic, Puri Junsheng (BMW i brand exclusive BMS supplier, Mercedes-Benz's key supplier) Interview: "The luxury branded car companies represented by BMW attach great importance to the comfort and functional safety of vehicles, and have a high demand for BMS." Also, Bischow emphasized in particular: "A good BMS product, its performance It must be "automobile level," but this has been ignored by some companies."

We also received the same argument when interviewed by the domestic new energy automobile engine plant. In general, when new energy vehicles are commissioned and commissioned on the first prototype, the engineers of each system will follow the whole process, such as VCU's electrical control engineers, BMS and motor controller software engineers, vehicle electrical engineers, etc., with the aim of immediate solution. The problem with the prototype car is to ensure that there is no problem with “something”. The preliminary debugging of the prototype determines the stability of the quality of the production vehicle from a certain point of view. Its importance is self-evident, but in this debugging, the BMS engineer communicates technical details directly with the main engine, not the battery. The same is true of manufacturers, motor controllers. In addition, technical details are mainly related to BMS engineers communicating with the charging pile manufacturers. Under normal circumstances, the main engine factory is to grasp the first-class components, and the second-level and third-level components are too lazy to manage. I do not know whether or not readers remember the Aston Martin gas pedal event of the previous year. This is a typical non-tier supplier pit master case.

Based on the reality, based on the recognition of the three-electricity system, we can conclude that BMS plays a role as a first-class component in terms of functionality and a second-level in terms of awareness and standards. Parts.

Therefore, we must accept BMS as the concept of "automobile-grade" (primary) parts and components. If the BMS is a first-class component, it means that the BMS is controlled directly by the host plant, the host plant increases investment in the BMS, the quality problem host plant communicates directly with the BMS manufacturer, bypasses the power battery, and the role is to enhance the role of the BMS. The dependence of the power battery system supports the further development of the BMS, while reducing the cost components of the power battery. In addition, the future new energy vehicles must be safer and smarter, so the demand for new energy vehicles is also higher, in hardware and software. Under the renewed development of technology, the vehicle's electronic control components, complete vehicle controllers, battery management systems, and motor controllers are all likely to be made "combined into three."

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