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Circuit, device and method for power balance of single battery of electric vehicle

A single cell and balancing circuit technology, which is applied in battery/fuel cell control devices, electric vehicles, vehicle components, etc., can solve the problems of reducing the utilization rate of automobile battery power, many balancing components, and complex structure, and achieves a simple structure. , low cost, high control efficiency

Active Publication Date: 2020-06-16
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When balancing each string of circuits in the battery pack, there are many balancing components and complex structures
However, passive equalization design is widely used in China, which will dissipate excess power as heat
When equalizing each string of circuits in the battery pack, the power loss is serious, which reduces the utilization rate of the car battery power

Method used

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  • Circuit, device and method for power balance of single battery of electric vehicle
  • Circuit, device and method for power balance of single battery of electric vehicle
  • Circuit, device and method for power balance of single battery of electric vehicle

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Embodiment Construction

[0017] According to the attached Figure 1 to Figure 5 , give a preferred embodiment of the present invention, and give a detailed description, so that the functions and characteristics of the present invention can be better understood.

[0018] see figure 1 , an electric vehicle single battery power balance circuit 1 according to an embodiment of the present invention includes a plurality of battery connection terminals 11, and a power balance module 12 is connected between each two adjacent battery connection terminals 11, and the power balance module 12 includes reverse To the two diodes D connected in parallel, the type of the diode D is the same.

[0019] A kind of electricity balance circuit 1 of a single battery of an electric vehicle according to an embodiment of the present invention utilizes the unidirectional conductivity of the diode D and the cut-off voltage of the diode D to determine the level of the electricity, and realizes the conduction of the corresponding...

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Abstract

The invention provides an electric vehicle single battery power balance circuit, device and method, wherein, the Electric vehicle single battery power balance circuit, device and method comprises a plurality of battery connection terminals, and each adjacent two battery connection terminals are connected with a electric quantity equalization module, and the electric quantity equalization module comprises two diodes in reverse parallel, and the diodes are of the same type.- The invention discloses an electric quantity balancing circuit, a device and a method of an electric vehicle single battery, which are low in cost, high in control efficiency, fast in speed and simple in structure, can be adapted to the battery system of most electric vehicles, and improves the service life and the energy utilization rate of the battery.

Description

technical field [0001] The invention relates to the technical field of electrical control, in particular to a circuit, device and method for electric vehicle battery power equalization. Background technique [0002] At present, the balance of power of electric vehicle battery packs at home and abroad is based on the series connection, and each series circuit of the battery pack is balanced separately. The equalization circuit is complex and has many components. [0003] For battery power balance of foreign pure electric vehicles, the design of active equalization function is often used to move the excess power to the battery with a lower single power. When equalizing each string of circuits of the battery pack, there are many equalizing components and complex structures. However, passive equalization design is widely used in China, which will dissipate more than electricity as heat. When equalizing each string of circuits in the battery pack, the power loss is serious, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/10
CPCY02T10/70
Inventor 阮观强赵会文李玉祺郑瑨徐亦宁周浩文
Owner SHANGHAI DIANJI UNIV
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