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Replacement detection method for battery pack of power battery system and power battery system

A power battery and system battery technology, which is applied in battery/fuel cell control devices, charging stations, electric vehicles, etc., can solve the problem that the connection of the power circuit cannot be confirmed in time, the electrical components and lines are damaged, and the judgment cannot be seen intuitively. and other problems to achieve the effect of improving safety and reliability, good safety, and preventing short circuits

Pending Publication Date: 2022-03-01
帝亚一维新能源汽车有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, after replacing the battery pack and before the vehicle is powered on, whether the power circuit between the replaced battery pack and the power battery system is firmly connected cannot be confirmed in time.
Whether the replacement is successful or not, it is impossible to judge intuitively
If the connection of the battery pack is not reliable or the matching is unsuccessful, it will cause damage to the entire power battery system and the electrical components and circuits on the vehicle

Method used

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  • Replacement detection method for battery pack of power battery system and power battery system
  • Replacement detection method for battery pack of power battery system and power battery system
  • Replacement detection method for battery pack of power battery system and power battery system

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Embodiment Construction

[0044] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0045]In addition, in the description of the present invention, the orientation nouns such as left, right, up, and down involved are for the convenience of description and are based on the terms in the illustrated state, and should not be understood as constituting a limitation on the structure of the present invention; the mentioned The first, second, third, etc. are also for the convenience of description and should not be understood as indicating or implying relative importance.

[0046] In the embodiments of the present invention, many English abbreviations of professional terms are involved. Among them, BCU refers to the battery protection unit, which is generally integrated and configured in the battery pack, and is used to detect the SOH (battery state of health) and SOC (battery state of charge) of t...

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Abstract

The invention provides a replacement detection method for a battery pack of a power battery system and the power battery system. The replacement detection method for the battery pack of the power battery system is used for detection after the battery pack in the power battery system is replaced. The method comprises the following steps that a whole vehicle is powered off, and a BMS enters a dormant state; replacing the battery pack; the BMS is awakened, communication with the newly connected BCU is established, a corresponding instruction is given out and returned if communication fails, and a corresponding instruction is given out and subsequent steps are carried out if communication succeeds; the BMS controls an interlocking loop; and testing the communication condition of the power loop, judging whether the replacement is successful or not, and giving a corresponding instruction. According to the replacement detection method for the battery pack of the power battery system, aiming at the replacement operation requirement of a single battery pack in the power battery system, whether the battery pack is successfully replaced or not is conveniently observed and timely found, and the safety and reliability of the replacement operation of the battery pack are favorably improved.

Description

technical field [0001] The invention relates to the technical field of power battery manufacture and application, in particular to a replacement detection method for a power battery system battery pack. The invention also relates to a power battery system. Background technique [0002] The power battery pack is the power source of electric vehicles. Most of the electric vehicles sold on the market currently have battery packs in the power battery system that are fixed and cannot be disassembled. Replace the battery pack as a whole. [0003] In order to reduce the difficulty of battery pack replacement and make the replacement more flexible and convenient, some manufacturers are currently developing detachable power battery packs. The power battery system of such vehicles consists of multiple battery packs, and a single battery pack is lighter in weight. It can be replaced by the car user by himself. The method is simple and the operation is convenient. It can solve the pro...

Claims

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Application Information

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IPC IPC(8): B60L58/12B60L3/00B60L3/04B60L53/80
CPCB60L58/12B60L3/0046B60L3/04B60L53/80B60L2240/54Y02T10/70Y02T10/7072
Inventor 何坤周道辉陈龙科李锵
Owner 帝亚一维新能源汽车有限公司
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