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A battery management system, current sampling method, device and electric vehicle

A battery management system and current sampling technology, applied in the field of electric vehicles, battery management systems, current sampling methods, and devices, can solve problems such as the inability to obtain battery current values, reduce the risk of hardware random failure, and ensure continuous charging and normal charging. Operation and the effect of ensuring reliability

Active Publication Date: 2021-03-02
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a battery management system, a current sampling method, a device, and an electric vehicle, so as to solve the problem that the correct current value of the battery cannot be obtained once a problem occurs in the current sensor in the vehicle in the prior art

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  • A battery management system, current sampling method, device and electric vehicle
  • A battery management system, current sampling method, device and electric vehicle
  • A battery management system, current sampling method, device and electric vehicle

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Embodiment Construction

[0067] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0068] According to an aspect of the embodiments of the present invention, a battery management system is provided.

[0069] Such as figure 1 As shown, the battery management system includes: a battery control unit 1 , a first current sensor 2 and a second current sensor 3 .

[0070] Wherein, the first current sensor 2 and the second current sensor 3 collect the current data of the battery respectively, and send them to the battery control uni...

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Abstract

Embodiments of the present invention provide a battery management system, a current sampling method and device, and an electric vehicle. Wherein, the battery management system includes: a battery control unit, a first current sensor and a second current sensor; wherein, the first current sensor and the second current sensor respectively collect the current data of the battery and send them to the battery control unit. In the embodiment of the present invention, a redundant design of two current sensors is adopted, and the current of the battery is sampled by the two current sensors respectively, and then the current data collected by one of the current sensors is selected as the current value of the battery. Since there are two current sensors, when a failure of one of the current sensors is detected, the current value of the battery can also be obtained through the other current sensor, so as to ensure the reliability of current sampling and ensure the continuous charging and normal operation of the battery. Improve battery safety and reduce the risk of random hardware failures.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a battery management system, a current sampling method, a device and an electric vehicle. Background technique [0002] With the increasing awareness of environmental protection and the requirement for higher energy efficiency, electric vehicles are becoming more and more popular. Electric vehicles can not only reduce the emission of polluting gases, but also effectively reduce the dependence on oil resources. For electric vehicles, the power battery is the power source of electric vehicles, and it is also the biggest factor affecting the growth rate of its use. The current sensor has a key impact on the overall performance of the power battery. Whether the power battery can be continuously charged and can be normal Operation depends on the accuracy and reliability of the data measured by the current sensor. The traditional current sampling scheme does not fully consider th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/12B60L3/00
CPCB60L2240/54B60L58/10Y02T10/70
Inventor 梁瑞代康伟张骞慧李惠惠侯金刚
Owner BEIJING ELECTRIC VEHICLE
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