System and method for monitoring and warning vehicle battery status

A battery and state-of-charge technology, which is applied to measuring electricity, measuring devices, vehicle components, etc., can solve problems such as inconvenient operation, poor user experience, and low display accuracy, and achieve accurate judgment methods and good user experience. Effect

CN109143101BActive Publication Date: 2020-01-14HEFEI CHANGAN AUTOMOBILE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-01-14

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Abstract

The invention discloses an automobile battery state monitoring and warning system and method. The system includes a battery sensing unit, a BCM (Body Control Module), a combined instrument unit, an on-board T-BOX unit and a handheld terminal. The battery sensing unit is installed at the negative end of a battery, and is electrically connected with the BCM. The BCM is electrically connected with the combined instrument unit and the on-board T-BOX unit. The on-board T-BOX unit wirelessly communicates with the handheld terminal. The battery sensing unit detects the discharge current, internal resistance and state of charge (SOC) of the battery in real time, and transmits the discharge current, internal resistance and SOC of the battery to the BCM for judgment. When the power of the battery islow or the life of the battery is expired, the BCM sends alarm information to the combined instrument unit for display or sends alarm information through the on-board T-BOX unit to the handheld terminal for display. The owner can be notified of the accurate state of the battery, and the user experience can be enhanced.
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Description

technical field

[0001] The invention belongs to the field of automobile electrical appliances, and in particular relates to an automobile storage battery state monitoring and warning system and method. Background technique

[0002] At present, the driver judges the state of charge of the starting lead-acid battery for automobiles, generally by observing the color of the state of charge indicator (commonly known as "electric eye") placed on the top of the battery. When the color of the "electric eye" is green, it means that the battery is well charged; when the color of the "electric eye" is black, it means that the battery is insufficient; when the color of the "electric eye" is white, it means that the battery is invalid (that is, the life is expired). The principle of the "electric eye" is to test the density of the battery electrolyte. The "electric eye" is a plastic part with a fixed specific gravity. With the change of the specific gravity of the electrolyte, the positi...

Examples

Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] like figure 1The vehicle battery state monitoring and warning system shown includes a battery sensing unit 1, a BCM body control unit 2, an instrument cluster unit 3, a vehicle T-BOX unit 4, and a handheld terminal 5. The handheld terminal 5 is a mobile phone of the car owner. The battery sensor unit 1 is installed on the negative terminal of the battery 6, and is electrically connected to the BCM body control unit 2 through the CAN bus, and the BCM body control unit 2 is electrically connected to the combination instrument unit 3 and the vehicle T-BOX unit 4 through the CAN bus. The T-BOX unit 4 communicates wirelessly with the handheld terminal 5 . The battery sensor unit 1 detects the discharge current, internal resistance and SOC of the battery 6 in real time, and sends the discharge current, internal resistance and SOC of the battery 6 to the BCM body co...