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Cell temperature sampling system and automobile

A technology of sampling system and battery temperature, applied in electric vehicles, thermometers, thermometer parts, etc., can solve problems such as safety accidents and inability to diagnose in time, and achieve the effect of improving safety and avoiding common cause failures

Active Publication Date: 2018-11-20
BEIJING ELECTRIC VEHICLE
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] ISO 26262 has strict test requirements for faults such as sensor out-of-range, offset, stuck within range, oscillation, etc. Traditional temperature sampling schemes do not fully consider systematic failures and random hardware rate failures, but only do simple faults Diagnosis, if there is a problem with the temperature sensor or the sampling of the temperature sensor, it cannot be diagnosed in time or has an alternative solution, which is likely to lead to serious safety incidents

Method used

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  • Cell temperature sampling system and automobile

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Embodiment Construction

[0036] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. In the following description, specific details, such as specific configurations and components, are provided only to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art should recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0037] It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of t...

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Abstract

The invention provides a cell temperature sampling system and an automobile. The cell temperature sampling system comprises a first temperature sensor used for acquiring the first temperature information of the preset cell position, a second temperature sensor used for acquiring the second temperature information of the preset cell position, a sampling circuit which is connected with the second temperature sensor and is used for obtaining the second temperature information and converting the second temperature information into a second temperature detection signal represented in a digital signal, and a cell management unit which is electrically connected with the first temperature sensor and the sampling circuit and is used for determining the real-time temperature of a cell according to afirst temperature signal and a second temperature signal. The cell temperature sampling system is advantaged in that two-path acquisition is carried out, principles of acquiring the two-way temperature information are different, common cause failure is avoided, and safety of temperature acquisition is improved.

Description

technical field [0001] The invention relates to the battery field, in particular to a battery temperature sampling system and an automobile. Background technique [0002] The biggest factor affecting the growth rate of electric vehicles is the battery, and the battery temperature sensor has a key impact on the overall performance of the battery. Whether the battery can be continuously charged and can operate normally depends on the accuracy and reliability of the temperature sensor measurement data. . The battery temperature sensor plays an important role in the overall performance of the battery. Whether the battery can be continuously charged, whether it can operate normally, and the safety of the battery depends on the accuracy and reliability of the battery temperature sensor measurement. [0003] Automotive Safety Integrity Level ISO 26262 is based on IEC61508 and written to meet the requirements of specific electrical and electronic systems on road vehicles. Safety i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K1/02B60L11/18
CPCG01K1/026Y02T10/70
Inventor 梁瑞代康伟张骞慧侯金钢温晨
Owner BEIJING ELECTRIC VEHICLE
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