New energy vehicle battery pack bottom knocking detection method and device
A technology for new energy vehicles and battery packs, applied in battery/fuel cell control devices, electrical devices, transportation, and packaging, etc. Problems such as the bottom position of the battery pack achieve the effect of fast response, simple structure, and timely alarm
Pending Publication Date: 2022-02-22
VOYAH AUTOMOBILE TECH CO LTD
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Problems solved by technology
[0003] Patent CN 112406895 A The monitoring method, monitoring device and server of the bottoming event of the vehicle chassis cannot judge the position of the battery pack; the patent CN 108802623 A is a system and method for detecting the loss of the battery pack shell of an electric vehicle, and the battery pack cannot be judged The severity of the bottoming, the above two patents obtain the battery pack bottoming information indirectly, and cannot accurately identify the bottoming event, and cannot detect multiple bottoming positions at the same time
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[0053] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0054] Terms such as "inside" and other indicated directions or positional relationships are based on the directions or positional relationships described in the drawings, which are for convenience of description only, and do not indicate or imply that devices or elements must have a specific orientation or be constructed in a specific orientation. and operation, and therefore should not be const...
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The invention discloses a new energy vehicle battery pack bottom collision detection method and device. The method comprises the following steps: step 1, obtaining the pressure parameters of a plurality of positions at the bottom of a battery pack in real time, taking the pressure parameters greater than a first pressure threshold value as abnormal pressure parameters, and determining that the bottom of the battery pack is impacted if the abnormal pressure parameters exist; step 2, acquiring an impact image of the bottom of the battery pack, comparing the impact image with a standard image of the bottom of the battery pack, and judging whether bottom collision occurs or not; step 3, if the battery pack is knocked, judging the severity grade of bottom knocking of the battery pack based on the abnormal pressure parameters; and step 4, giving an alarm according to the severity level of bottom knocking. The battery pack bottom collision event can be accurately identified, alarm information is sent to a user, whether the chassis collision event happens to the vehicle or not is monitored in real time, and the safety performance of the new energy vehicle is improved.
Description
technical field [0001] The invention relates to the field of new energy vehicles, in particular to a method and a device for detecting bottoming of a battery pack of a new energy vehicle. Background technique [0002] After the battery pack of a new energy vehicle is knocked to the bottom, it may cause damage to the battery pack shell or even damage to the internal structure. In severe cases, it may cause fire and explosion of the battery pack, affecting user safety. Existing battery pack bottom detection methods include: arranging a brittle conductive material layer on the inner surface of the bottom of the battery pack shell, monitoring the on-off of the conductive layer, and detecting whether the battery pack is damaged; , Vehicle failure signals and driver behavior signals to monitor whether the vehicle has a chassis knock event. [0003] Patent CN 112406895 A The monitoring method, monitoring device and server of the bottoming event of the vehicle chassis cannot judge ...
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IPC IPC(8): B60L58/10B60L3/00
CPCB60L58/10B60L3/00B60L3/0046Y02T10/70
Inventor 涂灿张明黄敏
Owner VOYAH AUTOMOBILE TECH CO LTD