A passive equalization circuit, fault diagnosis method and automobile
A passive equalization and circuit failure technology, applied in the automotive field, can solve problems such as reduced battery life, battery power consumption, battery imbalance, etc., to achieve the effect of ensuring availability
Active Publication Date: 2020-03-10
BEIJING ELECTRIC VEHICLE
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The embodiment of the present invention provides a passive equalization circuit, a fault diagnosis method and an automobile, which are used to solve the problem that the fault in the passive equalization circuit causes continuous consumption of battery power, resulting in unbalanced batteries and thus reducing the service life of the batteries
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] 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.
[0035] In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of each process should be determined by its functi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a passive equalization circuit, a fault diagnose method and an automobile, and relates to the technical field of automobiles. The passive equalization circuit comprises a switchand a processor, and the processor is used for obtaining first voltage of a battery cell in a first state, second voltage of the battery cell in a second state after the switch is turned on, and third voltage of the battery cell in a third state after the switch is turned off. Whether the passive equalization circuit has faults or not is judged according to the first voltage, the second voltage and / or the third voltage. The processor is used for obtaining the first voltage, the second voltage and the third voltage of the battery cell, whether the passive equalization circuit has faults or notis judged according to the first voltage, the second voltage and / or the third voltage without adding of an extra circuit, faults of the passive equalization circuit can be found in time, and the battery availability is guaranteed.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a passive equalization circuit, a fault diagnosis method and an automobile. Background technique [0002] At present, in order to reduce the problem of the drop in available capacity of the battery pack caused by the consistency deviation of the cells, a passive equalization function is generally added to the battery management system. However, if there is a fault in the passive equalization circuit of the battery management system, especially when the equalization resistor is short-circuited or the equalization switch cannot be disconnected, it will continue to consume the power of the single battery, which will easily lead to unbalanced batteries, thereby reducing the service life of the battery. [0003] Therefore, there is an urgent need for a passive equalization circuit, a fault diagnosis method and an automobile, which can solve the problem that the fault in the passiv...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/10B60L3/00G01R31/392G01R31/00
CPCB60L58/20G01R31/00G01R31/392Y02T10/70
Inventor 张骞慧曹东林代康伟侯金钢
Owner BEIJING ELECTRIC VEHICLE