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Electric vehicle battery management system compatible with single battery and double batteries

An electric vehicle battery and management system technology, applied in the field of electric vehicle battery management system, can solve the problems of short cruising range, single battery can not support long-distance driving of electric vehicle, long charging time, etc.

Pending Publication Date: 2022-03-25
许力文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a single-battery and dual-battery compatible electric vehicle battery management system to improve the prior art due to the long charging time and short cruising range of the batteries loaded on the current electric vehicle, which leads to the inability of the single battery to support the electric vehicle. The problem with long distance driving

Method used

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  • Electric vehicle battery management system compatible with single battery and double batteries
  • Electric vehicle battery management system compatible with single battery and double batteries
  • Electric vehicle battery management system compatible with single battery and double batteries

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Embodiment 1

[0035] Please refer to figure 1 , image 3 with Figure 4 , figure 1 Shown is a schematic structural diagram of a single-battery and dual-battery compatible electric vehicle battery management system provided by an embodiment of the present invention, image 3 Shown is a schematic diagram of a dual-battery compatible structure of an electric vehicle provided by an embodiment of the present invention, Figure 4 Shown is a schematic structural view of the operation of a single battery of an electric vehicle provided by the embodiment of the present invention. The embodiment of the present application provides a single-battery and dual-battery compatible electric vehicle battery management system, which is set on the electric vehicle body, and includes a power distribution unit 10, a first battery pack 1 and a second battery set on the electric vehicle body Pack 2, the second battery pack 2 is detachably connected to the electric vehicle body, the first battery pack 1 and the...

Embodiment 2

[0063] Please refer to figure 2 , figure 2 Shown is a schematic structural diagram of a dual-battery installation provided by an embodiment of the present invention. The first battery pack 1 is provided with a high-voltage interface X2 and a high-voltage interface X4, and the second battery pack 2 is provided with a high-voltage interface X3 and a high-voltage interface X5. The high-voltage interface X2 is used to connect to the high-voltage interface X3 through a cable, and the high-voltage interface X4 is used to pass The first DC / DC module 15 is connected to the high voltage interface X5. Specifically, the first battery pack 1 and the second battery pack 2 operate in parallel at high voltage. When the electric vehicle is powered by the single battery mode, the vehicle controller VCU17 controls the first battery pack 1 to output power to the power distribution unit 10 , and various vehicles of the electric vehicle obtain voltage through the power distribution unit 10 . ...

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Abstract

The invention provides an electric vehicle battery management system compatible with a single battery and double batteries, and relates to the technical field of electric vehicles. The system is arranged on an electric vehicle body and comprises a power distribution unit, a first battery pack and a second battery pack which are arranged on the electric vehicle body, the second battery pack is detachably connected with the electric vehicle body, under the condition that the second battery pack is installed, the first battery pack and the second battery pack are in high-voltage parallel connection, and a first BMS and a second BMS are connected and work cooperatively. The first BMS and the second BMS are connected with a vehicle control unit (VCU) through low-voltage wire harnesses so as to control, monitor and protect the whole battery system. The vehicle control unit VCU controls the first battery pack and the second battery pack to be compatible to form double batteries to supply power to the electric vehicle, so that more electric energy is provided for the electric vehicle, time waste caused by charging of the electric vehicle during long-distance driving is avoided, sufficient endurance mileage is guaranteed, and long-distance driving of the electric vehicle is better supported.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle battery management system compatible with single batteries and double batteries. Background technique [0002] With the development of science and technology, electric vehicles are getting more and more attention from the society. Electric vehicles, that is, electric drive vehicles, have another name called electric drive vehicles. Electric vehicles are divided into AC electric vehicles and DC electric vehicles. Generally speaking, electric vehicles use batteries as the energy source, and convert electrical energy into mechanical energy through controllers, motors and other components to control the current and change the speed of the vehicle. [0003] Most electric vehicles only need to cover a short distance for normal daily driving. Although the energy carried by the first battery pack can meet most of the daily use, it cannot meet the scenarios...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/34H01M10/613
CPCH02J7/0014H02J7/0063H02J7/0031H02J7/00712H02J7/00032H02J7/342H01M10/613Y02E60/10
Inventor 许力文
Owner 许力文