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Battery balancing system, vehicle, battery balancing method and storage medium

A technology of battery equalization and equalization circuit, which is applied in charge equalization circuit, battery/fuel cell control device, vehicle energy storage, etc. It can solve the problem of low equalization efficiency of the battery equalization system, improve the effect of battery equalization and prolong the time of battery equalization , Solve the effect of low equilibrium efficiency

Active Publication Date: 2021-05-14
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present disclosure is to provide a battery balancing system, a vehicle, a battery balancing method and a storage medium, which are used to solve the technical problem of low balancing efficiency of the battery balancing system in related technologies

Method used

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  • Battery balancing system, vehicle, battery balancing method and storage medium
  • Battery balancing system, vehicle, battery balancing method and storage medium
  • Battery balancing system, vehicle, battery balancing method and storage medium

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Embodiment Construction

[0081] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0082] figure 1 is a block diagram of a battery balancing system according to an exemplary embodiment, figure 2 It is a schematic diagram of a power supply branch in a battery balancing system according to an exemplary embodiment. Such as figure 1 and figure 2 As shown, the battery balancing system is applied to a vehicle including a vehicle body controller 31 and a battery 33, and the battery balancing system includes an acquisition circuit 12, a balancing circuit 13, a controller 14, and a power supply branch. Wherein, the battery pack 11 is composed of a plurality of single batteries 111 connected in series, and the power supply unit may be a storage...

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Abstract

The disclosure discloses a battery balancing system, a vehicle, a battery balancing method and a storage medium. The battery equalization system includes: an acquisition circuit; an equalization circuit; a controller connected to the acquisition circuit and the equalization circuit; and a power supply branch, the controller is used when the vehicle is in an OFF gear and there is a single battery that needs to be opened for equalization , the power supply branch is controlled to be connected to the power supply unit and the battery balancing system, so that the power supply unit supplies power to the battery balancing system. In the present disclosure, when the whole vehicle is in the OFF gear state, by controlling the power supply branch connected to the power supply unit and the battery equalization system to be in the conduction state, furthermore, the controller can continue to control the equalization circuit for the single battery that needs to be turned on for equalization. The equalization processing prolongs the battery equalization time, improves the battery equalization effect, and solves the technical problem of low equalization efficiency of the battery equalization system in the related art.

Description

technical field [0001] The present disclosure relates to the field of battery pack balancing, and in particular, to a battery balancing system, a vehicle, a battery balancing method, and a storage medium. Background technique [0002] In electric vehicles, the power battery pack is an important part of it. Since the battery pack is composed of multiple single cells connected in series, as the battery is used, the differences between the individual cells in the battery pack gradually increase, resulting in poor consistency among the battery cells. Due to the short plate effect of the battery, the capacity of the battery pack cannot be fully utilized, resulting in a decrease in the overall capacity of the battery pack. Therefore, effective balanced management of electric vehicle power battery packs is conducive to improving the consistency of each single battery in the power battery pack, reducing battery capacity loss, prolonging the service life of batteries and the mileage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/20H02J7/00
CPCH02J7/0019H02J7/00H02J7/0014B60L58/22Y02T10/70H02J7/0047
Inventor 罗红斌王超沈晓峰曾求勇
Owner BYD CO LTD
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