Multi-mode intelligent electronic fuse and control method thereof

A technology of electronic fuse and control method, which is applied in the direction of electrical components, circuit devices, emergency protection circuit devices, etc., which can solve the problem of over-design and additional costs, failure to identify load faults, and failure to meet high reliability and high functional safety levels Design and other issues to achieve the effect of reducing circuit failure, high reliability, and satisfying reliability

Pending Publication Date: 2021-04-30
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional fuses are no longer competent in these applications, and generally rely on increasing the design margin of the circuit to achieve safety protection, which will not only result in over-design and additional costs, but also fail to identify load faults in different operating modes and complete them efficiently and accurately. The corresponding fault handling mechanism does not have a control strategy for shutdown path detection, which cannot meet the needs of high reliability and high functional safety level design in the field of electric vehicles

Method used

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  • Multi-mode intelligent electronic fuse and control method thereof
  • Multi-mode intelligent electronic fuse and control method thereof

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Embodiment Construction

[0021] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. The advantages and features of the present invention will be more apparent from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0022] like figure 1 As shown, a multi-mode intelligent electronic fuse is used to control the on-off between the power supply 1 and the load module 5. The multi-mode intelligent electronic fuse includes a control unit 7 and a control switch 3. The control One end of the switch 3 is connected to the power supply 1 through the first collection module 2, and the other end is connected to the load module 5 through the second collection module 4, and the first collection module 2 collects the power supply 1 and the co...

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Abstract

The invention relates to a multi-mode intelligent electronic fuse and a control method thereof, which are used for controlling the on-off between a power supply and a load module; the fuse comprises a control unit and a control switch, one end of the control switch is connected with the power supply through a first acquisition module, and the other end of the control switch is connected with the load module through a second acquisition module; the first acquisition module acquires a first voltage value between the power supply and the control switch, the second acquisition module acquires a second voltage value and a current value between the control switch and the load module, and the control unit controls the on-off of the control switch according to the first voltage value, the second voltage value and the current value. According to the invention, the fault modes of the multi-mode load module under various working conditions can be covered, accurate and targeted fault response logic is provided, and the circuit failure is effectively reduced.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a multi-mode intelligent electronic fuse and a control method thereof. Background technique [0002] In the field of electric vehicles, as the complexity of electronic controller circuits increases, the requirements for functional safety continue to increase. When dealing with faults such as short circuit and overload, traditional fuses have problems such as inflexible fault judgment, inconvenient fault repair, slow fault action response, and low functional safety level. In some harsh environment application scenarios (such as high temperature environments), fuses There will also be aging, reduced current carrying capacity, and uncontrollable fusing time, which will lead to performance degradation. Therefore, the fuse cannot be configured as the only fault protection measure gradually. [0003] With the improvement of the integration level of the electronic controller circuit, t...

Claims

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Application Information

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IPC IPC(8): H02H3/10H02H3/04
CPCH02H3/10H02H3/042H02H3/046
Inventor 郑力夫纪晓泳陈剑锋袁黎君
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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