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Energy distribution method of automobile hybrid energy storage system, equipment and medium

A hybrid energy storage system and automobile technology, which is applied in vehicle energy storage, electric vehicles, genetic rules, etc., can solve problems such as driving that cannot be separated from people, and does not consider the driving style of the driver, so as to achieve reasonable and effective energy distribution and reduce discharge Effect of current multiplier and reduction of starting frequency

Active Publication Date: 2021-01-29
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At the same time, the current electric vehicles still cannot be separated from human driving, and human driving style will have a non-negligible impact on the energy consumption of electric vehicles
None of the current allocation strategies for hybrid energy storage systems take into account the driver's driving style

Method used

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  • Energy distribution method of automobile hybrid energy storage system, equipment and medium
  • Energy distribution method of automobile hybrid energy storage system, equipment and medium
  • Energy distribution method of automobile hybrid energy storage system, equipment and medium

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Embodiment Construction

[0045] This embodiment is carried out based on the technical solution of the present invention, provides detailed implementation and specific operation process, and further explains the technical solution of the present invention.

[0046] This embodiment provides an energy allocation method for a vehicle hybrid energy storage system considering driving style, which is used for allocating energy of the vehicle hybrid energy storage system. The vehicle hybrid energy storage system in this embodiment adopts an improved semi-active topology, such as figure 1 As shown, including: lithium battery, super capacitor, bidirectional DC / DC converter, switch, diode, DC / AC inverter; the moving end of the switch is connected to the super capacitor or lithium battery, and the fixed end of the switch is connected to the bidirectional DC / DC The first end of the converter is connected, and the second end of the bidirectional DC / / DC converter is connected to the first end of the DC / AC inverter; ...

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Abstract

The invention discloses an energy distribution method for an automobile hybrid energy storage system, equipment and a medium, and the method comprises the steps: judging the driving style of a driveraccording to the historical average acceleration, average deceleration and acceleration and deceleration frequency of the driver, and enabling the driving style to be aggressive, standard and quiet; calculating the average current of a lithium battery driven automobile according to the average historical driving power value of the automobile and the average voltage value of the lithium battery platform area; setting a corresponding lithium battery logic threshold current for the driver to drive the automobile based on the average current according to different driving styles of the driver; andcontrolling the working current of the lithium battery and the super capacitor in the automobile hybrid energy storage system based on the set lithium battery logic threshold current. The service life of the lithium battery in the hybrid energy storage system of the electric automobile can be prolonged, and the energy consumption of the hybrid energy storage system is reduced.

Description

technical field [0001] The invention relates to the field of electric vehicle energy storage, in particular to an energy distribution method, equipment and medium of a vehicle hybrid energy storage system considering driving style. Background technique [0002] Batteries are one of the core technologies of electric vehicles. With the rapid development of electric vehicles, higher and higher requirements are placed on battery technology. At present, lithium battery is the power battery with the largest market share. The reason is that compared with lead-acid battery and Ni-MH battery, it has three advantages: first, high energy density; second, high energy conversion rate; third, low self-discharge rate. Although lithium batteries meet the needs of electric vehicles for high energy density, they cannot meet their needs for high power density. When electric vehicles often encounter situations such as acceleration, climbing, emergency parking, etc. that require high-power disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/34B60L58/13G06N3/00G06N3/12
CPCH02J7/0048H02J7/345B60L58/13G06N3/006G06N3/126H02J2207/50Y02T10/70
Inventor 胡林田庆韬黄晶李亮胡晓松
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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